* [PATCH 05/18] musb: delete unused include files
2014-06-13 7:54 [RFC][PATCH 00/18] am33x: add musb Christoph Fritz
` (2 preceding siblings ...)
2014-06-13 7:54 ` [PATCH 03/18] linux wrapper: add more dummy spin_lock stubs Christoph Fritz
@ 2014-06-13 7:54 ` Christoph Fritz
2014-06-13 7:54 ` [PATCH 06/18] musb: move musb.h to path include/usb Christoph Fritz
` (12 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: Christoph Fritz @ 2014-06-13 7:54 UTC (permalink / raw)
To: barebox
---
include/linux/usb/atmel_usba_udc.h | 26 -
include/linux/usb/cdc.h | 224 --------
include/linux/usb/ch9.h | 1005 ------------------------------------
include/linux/usb/composite.h | 338 ------------
include/linux/usb/dwc3.h | 188 -------
include/linux/usb/gadget.h | 864 -------------------------------
include/linux/usb/xhci-omap.h | 140 -----
7 files changed, 2785 deletions(-)
delete mode 100644 include/linux/usb/atmel_usba_udc.h
delete mode 100644 include/linux/usb/cdc.h
delete mode 100644 include/linux/usb/ch9.h
delete mode 100644 include/linux/usb/composite.h
delete mode 100644 include/linux/usb/dwc3.h
delete mode 100644 include/linux/usb/gadget.h
delete mode 100644 include/linux/usb/xhci-omap.h
diff --git a/include/linux/usb/atmel_usba_udc.h b/include/linux/usb/atmel_usba_udc.h
deleted file mode 100644
index be29ef0..0000000
--- a/include/linux/usb/atmel_usba_udc.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * Platform data definitions for Atmel USBA gadget driver
- * [Original from Linux kernel: include/linux/usb/atmel_usba_udc.h]
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-#ifndef __LINUX_USB_USBA_H__
-#define __LINUX_USB_USBA_H__
-
-struct usba_ep_data {
- char *name;
- int index;
- int fifo_size;
- int nr_banks;
- int can_dma;
- int can_isoc;
-};
-
-struct usba_platform_data {
- int num_ep;
- struct usba_ep_data *ep;
-};
-
-extern int usba_udc_probe(struct usba_platform_data *pdata);
-
-#endif /* __LINUX_USB_USBA_H */
diff --git a/include/linux/usb/cdc.h b/include/linux/usb/cdc.h
deleted file mode 100644
index c1d039c..0000000
--- a/include/linux/usb/cdc.h
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- * USB Communications Device Class (CDC) definitions
- *
- * CDC says how to talk to lots of different types of network adapters,
- * notably ethernet adapters and various modems. It's used mostly with
- * firmware based USB peripherals.
- *
- * Ported to U-boot by: Thomas Smits <ts.smits@gmail.com> and
- * Remy Bohmer <linux@bohmer.net>
- */
-
-#define USB_CDC_SUBCLASS_ACM 0x02
-#define USB_CDC_SUBCLASS_ETHERNET 0x06
-#define USB_CDC_SUBCLASS_WHCM 0x08
-#define USB_CDC_SUBCLASS_DMM 0x09
-#define USB_CDC_SUBCLASS_MDLM 0x0a
-#define USB_CDC_SUBCLASS_OBEX 0x0b
-
-#define USB_CDC_PROTO_NONE 0
-
-#define USB_CDC_ACM_PROTO_AT_V25TER 1
-#define USB_CDC_ACM_PROTO_AT_PCCA101 2
-#define USB_CDC_ACM_PROTO_AT_PCCA101_WAKE 3
-#define USB_CDC_ACM_PROTO_AT_GSM 4
-#define USB_CDC_ACM_PROTO_AT_3G 5
-#define USB_CDC_ACM_PROTO_AT_CDMA 6
-#define USB_CDC_ACM_PROTO_VENDOR 0xff
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Class-Specific descriptors ... there are a couple dozen of them
- */
-
-#define USB_CDC_HEADER_TYPE 0x00 /* header_desc */
-#define USB_CDC_CALL_MANAGEMENT_TYPE 0x01 /* call_mgmt_descriptor */
-#define USB_CDC_ACM_TYPE 0x02 /* acm_descriptor */
-#define USB_CDC_UNION_TYPE 0x06 /* union_desc */
-#define USB_CDC_COUNTRY_TYPE 0x07
-#define USB_CDC_NETWORK_TERMINAL_TYPE 0x0a /* network_terminal_desc */
-#define USB_CDC_ETHERNET_TYPE 0x0f /* ether_desc */
-#define USB_CDC_WHCM_TYPE 0x11
-#define USB_CDC_MDLM_TYPE 0x12 /* mdlm_desc */
-#define USB_CDC_MDLM_DETAIL_TYPE 0x13 /* mdlm_detail_desc */
-#define USB_CDC_DMM_TYPE 0x14
-#define USB_CDC_OBEX_TYPE 0x15
-
-/* "Header Functional Descriptor" from CDC spec 5.2.3.1 */
-struct usb_cdc_header_desc {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubType;
-
- __le16 bcdCDC;
-} __attribute__ ((packed));
-
-/* "Call Management Descriptor" from CDC spec 5.2.3.2 */
-struct usb_cdc_call_mgmt_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubType;
-
- __u8 bmCapabilities;
-#define USB_CDC_CALL_MGMT_CAP_CALL_MGMT 0x01
-#define USB_CDC_CALL_MGMT_CAP_DATA_INTF 0x02
-
- __u8 bDataInterface;
-} __attribute__ ((packed));
-
-/* "Abstract Control Management Descriptor" from CDC spec 5.2.3.3 */
-struct usb_cdc_acm_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubType;
-
- __u8 bmCapabilities;
-} __attribute__ ((packed));
-
-/* capabilities from 5.2.3.3 */
-
-#define USB_CDC_COMM_FEATURE 0x01
-#define USB_CDC_CAP_LINE 0x02
-#define USB_CDC_CAP_BRK 0x04
-#define USB_CDC_CAP_NOTIFY 0x08
-
-/* "Union Functional Descriptor" from CDC spec 5.2.3.8 */
-struct usb_cdc_union_desc {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubType;
-
- __u8 bMasterInterface0;
- __u8 bSlaveInterface0;
- /* ... and there could be other slave interfaces */
-} __attribute__ ((packed));
-
-/* "Country Selection Functional Descriptor" from CDC spec 5.2.3.9 */
-struct usb_cdc_country_functional_desc {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubType;
-
- __u8 iCountryCodeRelDate;
- __le16 wCountyCode0;
- /* ... and there can be a lot of country codes */
-} __attribute__ ((packed));
-
-/* "Network Channel Terminal Functional Descriptor" from CDC spec 5.2.3.11 */
-struct usb_cdc_network_terminal_desc {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubType;
-
- __u8 bEntityId;
- __u8 iName;
- __u8 bChannelIndex;
- __u8 bPhysicalInterface;
-} __attribute__ ((packed));
-
-/* "Ethernet Networking Functional Descriptor" from CDC spec 5.2.3.16 */
-struct usb_cdc_ether_desc {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubType;
-
- __u8 iMACAddress;
- __le32 bmEthernetStatistics;
- __le16 wMaxSegmentSize;
- __le16 wNumberMCFilters;
- __u8 bNumberPowerFilters;
-} __attribute__ ((packed));
-
-/* "MDLM Functional Descriptor" from CDC WMC spec 6.7.2.3 */
-struct usb_cdc_mdlm_desc {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubType;
-
- __le16 bcdVersion;
- __u8 bGUID[16];
-} __attribute__ ((packed));
-
-/* "MDLM Detail Functional Descriptor" from CDC WMC spec 6.7.2.4 */
-struct usb_cdc_mdlm_detail_desc {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDescriptorSubType;
-
- /* type is associated with mdlm_desc.bGUID */
- __u8 bGuidDescriptorType;
- __u8 bDetailData[0];
-} __attribute__ ((packed));
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Class-Specific Control Requests (6.2)
- *
- * section 3.6.2.1 table 4 has the ACM profile, for modems.
- * section 3.8.2 table 10 has the ethernet profile.
- *
- * Microsoft's RNDIS stack for Ethernet is a vendor-specific CDC ACM variant,
- * heavily dependent on the encapsulated (proprietary) command mechanism.
- */
-
-#define USB_CDC_SEND_ENCAPSULATED_COMMAND 0x00
-#define USB_CDC_GET_ENCAPSULATED_RESPONSE 0x01
-#define USB_CDC_REQ_SET_LINE_CODING 0x20
-#define USB_CDC_REQ_GET_LINE_CODING 0x21
-#define USB_CDC_REQ_SET_CONTROL_LINE_STATE 0x22
-#define USB_CDC_REQ_SEND_BREAK 0x23
-#define USB_CDC_SET_ETHERNET_MULTICAST_FILTERS 0x40
-#define USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER 0x41
-#define USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER 0x42
-#define USB_CDC_SET_ETHERNET_PACKET_FILTER 0x43
-#define USB_CDC_GET_ETHERNET_STATISTIC 0x44
-
-/* Line Coding Structure from CDC spec 6.2.13 */
-struct usb_cdc_line_coding {
- __le32 dwDTERate;
- __u8 bCharFormat;
-#define USB_CDC_1_STOP_BITS 0
-#define USB_CDC_1_5_STOP_BITS 1
-#define USB_CDC_2_STOP_BITS 2
-
- __u8 bParityType;
-#define USB_CDC_NO_PARITY 0
-#define USB_CDC_ODD_PARITY 1
-#define USB_CDC_EVEN_PARITY 2
-#define USB_CDC_MARK_PARITY 3
-#define USB_CDC_SPACE_PARITY 4
-
- __u8 bDataBits;
-} __attribute__ ((packed));
-
-/* table 62; bits in multicast filter */
-#define USB_CDC_PACKET_TYPE_PROMISCUOUS (1 << 0)
-#define USB_CDC_PACKET_TYPE_ALL_MULTICAST (1 << 1) /* no filter */
-#define USB_CDC_PACKET_TYPE_DIRECTED (1 << 2)
-#define USB_CDC_PACKET_TYPE_BROADCAST (1 << 3)
-#define USB_CDC_PACKET_TYPE_MULTICAST (1 << 4) /* filtered */
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Class-Specific Notifications (6.3) sent by interrupt transfers
- *
- * section 3.8.2 table 11 of the CDC spec lists Ethernet notifications
- * section 3.6.2.1 table 5 specifies ACM notifications, accepted by RNDIS
- * RNDIS also defines its own bit-incompatible notifications
- */
-
-#define USB_CDC_NOTIFY_NETWORK_CONNECTION 0x00
-#define USB_CDC_NOTIFY_RESPONSE_AVAILABLE 0x01
-#define USB_CDC_NOTIFY_SERIAL_STATE 0x20
-#define USB_CDC_NOTIFY_SPEED_CHANGE 0x2a
-
-struct usb_cdc_notification {
- __u8 bmRequestType;
- __u8 bNotificationType;
- __le16 wValue;
- __le16 wIndex;
- __le16 wLength;
-} __attribute__ ((packed));
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
deleted file mode 100644
index bd48704..0000000
--- a/include/linux/usb/ch9.h
+++ /dev/null
@@ -1,1005 +0,0 @@
-/*
- * This file holds USB constants and structures that are needed for
- * USB device APIs. These are used by the USB device model, which is
- * defined in chapter 9 of the USB 2.0 specification and in the
- * Wireless USB 1.0 (spread around). Linux has several APIs in C that
- * need these:
- *
- * - the master/host side Linux-USB kernel driver API;
- * - the "usbfs" user space API; and
- * - the Linux "gadget" slave/device/peripheral side driver API.
- *
- * USB 2.0 adds an additional "On The Go" (OTG) mode, which lets systems
- * act either as a USB master/host or as a USB slave/device. That means
- * the master and slave side APIs benefit from working well together.
- *
- * There's also "Wireless USB", using low power short range radios for
- * peripheral interconnection but otherwise building on the USB framework.
- *
- * Note all descriptors are declared '__attribute__((packed))' so that:
- *
- * [a] they never get padded, either internally (USB spec writers
- * probably handled that) or externally;
- *
- * [b] so that accessing bigger-than-a-bytes fields will never
- * generate bus errors on any platform, even when the location of
- * its descriptor inside a bundle isn't "naturally aligned", and
- *
- * [c] for consistency, removing all doubt even when it appears to
- * someone that the two other points are non-issues for that
- * particular descriptor type.
- */
-
-#ifndef __LINUX_USB_CH9_H
-#define __LINUX_USB_CH9_H
-
-#include <linux/types.h> /* __u8 etc */
-#include <asm/byteorder.h> /* le16_to_cpu */
-#include <asm/unaligned.h> /* get_unaligned() */
-
-/*-------------------------------------------------------------------------*/
-
-/* CONTROL REQUEST SUPPORT */
-
-/*
- * USB directions
- *
- * This bit flag is used in endpoint descriptors' bEndpointAddress field.
- * It's also one of three fields in control requests bRequestType.
- */
-#define USB_DIR_OUT 0 /* to device */
-#define USB_DIR_IN 0x80 /* to host */
-
-/*
- * USB types, the second of three bRequestType fields
- */
-#define USB_TYPE_MASK (0x03 << 5)
-#define USB_TYPE_STANDARD (0x00 << 5)
-#define USB_TYPE_CLASS (0x01 << 5)
-#define USB_TYPE_VENDOR (0x02 << 5)
-#define USB_TYPE_RESERVED (0x03 << 5)
-
-/*
- * USB recipients, the third of three bRequestType fields
- */
-#define USB_RECIP_MASK 0x1f
-#define USB_RECIP_DEVICE 0x00
-#define USB_RECIP_INTERFACE 0x01
-#define USB_RECIP_ENDPOINT 0x02
-#define USB_RECIP_OTHER 0x03
-/* From Wireless USB 1.0 */
-#define USB_RECIP_PORT 0x04
-#define USB_RECIP_RPIPE 0x05
-
-/*
- * Standard requests, for the bRequest field of a SETUP packet.
- *
- * These are qualified by the bRequestType field, so that for example
- * TYPE_CLASS or TYPE_VENDOR specific feature flags could be retrieved
- * by a GET_STATUS request.
- */
-#define USB_REQ_GET_STATUS 0x00
-#define USB_REQ_CLEAR_FEATURE 0x01
-#define USB_REQ_SET_FEATURE 0x03
-#define USB_REQ_SET_ADDRESS 0x05
-#define USB_REQ_GET_DESCRIPTOR 0x06
-#define USB_REQ_SET_DESCRIPTOR 0x07
-#define USB_REQ_GET_CONFIGURATION 0x08
-#define USB_REQ_SET_CONFIGURATION 0x09
-#define USB_REQ_GET_INTERFACE 0x0A
-#define USB_REQ_SET_INTERFACE 0x0B
-#define USB_REQ_SYNCH_FRAME 0x0C
-#define USB_REQ_SET_SEL 0x30
-#define USB_REQ_SET_ISOCH_DELAY 0x31
-
-#define USB_REQ_SET_ENCRYPTION 0x0D /* Wireless USB */
-#define USB_REQ_GET_ENCRYPTION 0x0E
-#define USB_REQ_RPIPE_ABORT 0x0E
-#define USB_REQ_SET_HANDSHAKE 0x0F
-#define USB_REQ_RPIPE_RESET 0x0F
-#define USB_REQ_GET_HANDSHAKE 0x10
-#define USB_REQ_SET_CONNECTION 0x11
-#define USB_REQ_SET_SECURITY_DATA 0x12
-#define USB_REQ_GET_SECURITY_DATA 0x13
-#define USB_REQ_SET_WUSB_DATA 0x14
-#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
-#define USB_REQ_LOOPBACK_DATA_READ 0x16
-#define USB_REQ_SET_INTERFACE_DS 0x17
-
-/* The Link Power Management (LPM) ECN defines USB_REQ_TEST_AND_SET command,
- * used by hubs to put ports into a new L1 suspend state, except that it
- * forgot to define its number ...
- */
-
-/*
- * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and
- * are read as a bit array returned by USB_REQ_GET_STATUS. (So there
- * are at most sixteen features of each type.) Hubs may also support a
- * new USB_REQ_TEST_AND_SET_FEATURE to put ports into L1 suspend.
- */
-#define USB_DEVICE_SELF_POWERED 0 /* (read only) */
-#define USB_DEVICE_REMOTE_WAKEUP 1 /* dev may initiate wakeup */
-#define USB_DEVICE_TEST_MODE 2 /* (wired high speed only) */
-#define USB_DEVICE_BATTERY 2 /* (wireless) */
-#define USB_DEVICE_B_HNP_ENABLE 3 /* (otg) dev may initiate HNP */
-#define USB_DEVICE_WUSB_DEVICE 3 /* (wireless)*/
-#define USB_DEVICE_A_HNP_SUPPORT 4 /* (otg) RH port supports HNP */
-#define USB_DEVICE_A_ALT_HNP_SUPPORT 5 /* (otg) other RH port does */
-#define USB_DEVICE_DEBUG_MODE 6 /* (special devices only) */
-
-/*
- * Test Mode Selectors
- * See USB 2.0 spec Table 9-7
- */
-#define TEST_J 1
-#define TEST_K 2
-#define TEST_SE0_NAK 3
-#define TEST_PACKET 4
-#define TEST_FORCE_EN 5
-
-/*
- * New Feature Selectors as added by USB 3.0
- * See USB 3.0 spec Table 9-6
- */
-#define USB_DEVICE_U1_ENABLE 48 /* dev may initiate U1 transition */
-#define USB_DEVICE_U2_ENABLE 49 /* dev may initiate U2 transition */
-#define USB_DEVICE_LTM_ENABLE 50 /* dev may send LTM */
-#define USB_INTRF_FUNC_SUSPEND 0 /* function suspend */
-
-#define USB_INTR_FUNC_SUSPEND_OPT_MASK 0xFF00
-/*
- * Suspend Options, Table 9-7 USB 3.0 spec
- */
-#define USB_INTRF_FUNC_SUSPEND_LP (1 << (8 + 0))
-#define USB_INTRF_FUNC_SUSPEND_RW (1 << (8 + 1))
-
-#define USB_ENDPOINT_HALT 0 /* IN/OUT will STALL */
-
-/* Bit array elements as returned by the USB_REQ_GET_STATUS request. */
-#define USB_DEV_STAT_U1_ENABLED 2 /* transition into U1 state */
-#define USB_DEV_STAT_U2_ENABLED 3 /* transition into U2 state */
-#define USB_DEV_STAT_LTM_ENABLED 4 /* Latency tolerance messages */
-
-/**
- * struct usb_ctrlrequest - SETUP data for a USB device control request
- * @bRequestType: matches the USB bmRequestType field
- * @bRequest: matches the USB bRequest field
- * @wValue: matches the USB wValue field (le16 byte order)
- * @wIndex: matches the USB wIndex field (le16 byte order)
- * @wLength: matches the USB wLength field (le16 byte order)
- *
- * This structure is used to send control requests to a USB device. It matches
- * the different fields of the USB 2.0 Spec section 9.3, table 9-2. See the
- * USB spec for a fuller description of the different fields, and what they are
- * used for.
- *
- * Note that the driver for any interface can issue control requests.
- * For most devices, interfaces don't coordinate with each other, so
- * such requests may be made at any time.
- */
-struct usb_ctrlrequest {
- __u8 bRequestType;
- __u8 bRequest;
- __le16 wValue;
- __le16 wIndex;
- __le16 wLength;
-} __attribute__ ((packed));
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * STANDARD DESCRIPTORS ... as returned by GET_DESCRIPTOR, or
- * (rarely) accepted by SET_DESCRIPTOR.
- *
- * Note that all multi-byte values here are encoded in little endian
- * byte order "on the wire". Within the kernel and when exposed
- * through the Linux-USB APIs, they are not converted to cpu byte
- * order; it is the responsibility of the client code to do this.
- * The single exception is when device and configuration descriptors (but
- * not other descriptors) are read from usbfs (i.e. /proc/bus/usb/BBB/DDD);
- * in this case the fields are converted to host endianness by the kernel.
- */
-
-/*
- * Descriptor types ... USB 2.0 spec table 9.5
- */
-#define USB_DT_DEVICE 0x01
-#define USB_DT_CONFIG 0x02
-#define USB_DT_STRING 0x03
-#define USB_DT_INTERFACE 0x04
-#define USB_DT_ENDPOINT 0x05
-#define USB_DT_DEVICE_QUALIFIER 0x06
-#define USB_DT_OTHER_SPEED_CONFIG 0x07
-#define USB_DT_INTERFACE_POWER 0x08
-/* these are from a minor usb 2.0 revision (ECN) */
-#define USB_DT_OTG 0x09
-#define USB_DT_DEBUG 0x0a
-#define USB_DT_INTERFACE_ASSOCIATION 0x0b
-/* these are from the Wireless USB spec */
-#define USB_DT_SECURITY 0x0c
-#define USB_DT_KEY 0x0d
-#define USB_DT_ENCRYPTION_TYPE 0x0e
-#define USB_DT_BOS 0x0f
-#define USB_DT_DEVICE_CAPABILITY 0x10
-#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
-#define USB_DT_WIRE_ADAPTER 0x21
-#define USB_DT_RPIPE 0x22
-#define USB_DT_CS_RADIO_CONTROL 0x23
-/* From the T10 UAS specification */
-#define USB_DT_PIPE_USAGE 0x24
-/* From the USB 3.0 spec */
-#define USB_DT_SS_ENDPOINT_COMP 0x30
-
-/* Conventional codes for class-specific descriptors. The convention is
- * defined in the USB "Common Class" Spec (3.11). Individual class specs
- * are authoritative for their usage, not the "common class" writeup.
- */
-#define USB_DT_CS_DEVICE (USB_TYPE_CLASS | USB_DT_DEVICE)
-#define USB_DT_CS_CONFIG (USB_TYPE_CLASS | USB_DT_CONFIG)
-#define USB_DT_CS_STRING (USB_TYPE_CLASS | USB_DT_STRING)
-#define USB_DT_CS_INTERFACE (USB_TYPE_CLASS | USB_DT_INTERFACE)
-#define USB_DT_CS_ENDPOINT (USB_TYPE_CLASS | USB_DT_ENDPOINT)
-
-/* All standard descriptors have these 2 fields at the beginning */
-struct usb_descriptor_header {
- __u8 bLength;
- __u8 bDescriptorType;
-} __attribute__ ((packed));
-
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_DEVICE: Device descriptor */
-struct usb_device_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __le16 bcdUSB;
- __u8 bDeviceClass;
- __u8 bDeviceSubClass;
- __u8 bDeviceProtocol;
- __u8 bMaxPacketSize0;
- __le16 idVendor;
- __le16 idProduct;
- __le16 bcdDevice;
- __u8 iManufacturer;
- __u8 iProduct;
- __u8 iSerialNumber;
- __u8 bNumConfigurations;
-} __attribute__ ((packed));
-
-#define USB_DT_DEVICE_SIZE 18
-
-
-/*
- * Device and/or Interface Class codes
- * as found in bDeviceClass or bInterfaceClass
- * and defined by www.usb.org documents
- */
-#define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */
-#define USB_CLASS_AUDIO 1
-#define USB_CLASS_COMM 2
-#define USB_CLASS_HID 3
-#define USB_CLASS_PHYSICAL 5
-#define USB_CLASS_STILL_IMAGE 6
-#define USB_CLASS_PRINTER 7
-#define USB_CLASS_MASS_STORAGE 8
-#define USB_CLASS_HUB 9
-#define USB_CLASS_CDC_DATA 0x0a
-#define USB_CLASS_CSCID 0x0b /* chip+ smart card */
-#define USB_CLASS_CONTENT_SEC 0x0d /* content security */
-#define USB_CLASS_VIDEO 0x0e
-#define USB_CLASS_WIRELESS_CONTROLLER 0xe0
-#define USB_CLASS_MISC 0xef
-#define USB_CLASS_APP_SPEC 0xfe
-#define USB_CLASS_VENDOR_SPEC 0xff
-
-#define USB_SUBCLASS_VENDOR_SPEC 0xff
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_CONFIG: Configuration descriptor information.
- *
- * USB_DT_OTHER_SPEED_CONFIG is the same descriptor, except that the
- * descriptor type is different. Highspeed-capable devices can look
- * different depending on what speed they're currently running. Only
- * devices with a USB_DT_DEVICE_QUALIFIER have any OTHER_SPEED_CONFIG
- * descriptors.
- */
-struct usb_config_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __le16 wTotalLength;
- __u8 bNumInterfaces;
- __u8 bConfigurationValue;
- __u8 iConfiguration;
- __u8 bmAttributes;
- __u8 bMaxPower;
-} __attribute__ ((packed));
-
-#define USB_DT_CONFIG_SIZE 9
-
-/* from config descriptor bmAttributes */
-#define USB_CONFIG_ATT_ONE (1 << 7) /* must be set */
-#define USB_CONFIG_ATT_SELFPOWER (1 << 6) /* self powered */
-#define USB_CONFIG_ATT_WAKEUP (1 << 5) /* can wakeup */
-#define USB_CONFIG_ATT_BATTERY (1 << 4) /* battery powered */
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_STRING: String descriptor */
-struct usb_string_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __le16 wData[1]; /* UTF-16LE encoded */
-} __attribute__ ((packed));
-
-/* note that "string" zero is special, it holds language codes that
- * the device supports, not Unicode characters.
- */
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_INTERFACE: Interface descriptor */
-struct usb_interface_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __u8 bInterfaceNumber;
- __u8 bAlternateSetting;
- __u8 bNumEndpoints;
- __u8 bInterfaceClass;
- __u8 bInterfaceSubClass;
- __u8 bInterfaceProtocol;
- __u8 iInterface;
-} __attribute__ ((packed));
-
-#define USB_DT_INTERFACE_SIZE 9
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_ENDPOINT: Endpoint descriptor */
-struct usb_endpoint_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __u8 bEndpointAddress;
- __u8 bmAttributes;
- __le16 wMaxPacketSize;
- __u8 bInterval;
-
- /* NOTE: these two are _only_ in audio endpoints. */
- /* use USB_DT_ENDPOINT*_SIZE in bLength, not sizeof. */
- __u8 bRefresh;
- __u8 bSynchAddress;
-} __attribute__ ((packed));
-
-#define USB_DT_ENDPOINT_SIZE 7
-#define USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */
-
-
-/*
- * Endpoints
- */
-#define USB_ENDPOINT_NUMBER_MASK 0x0f /* in bEndpointAddress */
-#define USB_ENDPOINT_DIR_MASK 0x80
-
-#define USB_ENDPOINT_XFERTYPE_MASK 0x03 /* in bmAttributes */
-#define USB_ENDPOINT_XFER_CONTROL 0
-#define USB_ENDPOINT_XFER_ISOC 1
-#define USB_ENDPOINT_XFER_BULK 2
-#define USB_ENDPOINT_XFER_INT 3
-#define USB_ENDPOINT_MAX_ADJUSTABLE 0x80
-
-/* The USB 3.0 spec redefines bits 5:4 of bmAttributes as interrupt ep type. */
-#define USB_ENDPOINT_INTRTYPE 0x30
-#define USB_ENDPOINT_INTR_PERIODIC (0 << 4)
-#define USB_ENDPOINT_INTR_NOTIFICATION (1 << 4)
-
-#define USB_ENDPOINT_SYNCTYPE 0x0c
-#define USB_ENDPOINT_SYNC_NONE (0 << 2)
-#define USB_ENDPOINT_SYNC_ASYNC (1 << 2)
-#define USB_ENDPOINT_SYNC_ADAPTIVE (2 << 2)
-#define USB_ENDPOINT_SYNC_SYNC (3 << 2)
-
-#define USB_ENDPOINT_USAGE_MASK 0x30
-#define USB_ENDPOINT_USAGE_DATA 0x00
-#define USB_ENDPOINT_USAGE_FEEDBACK 0x10
-#define USB_ENDPOINT_USAGE_IMPLICIT_FB 0x20 /* Implicit feedback Data endpoint */
-
-/*-------------------------------------------------------------------------*/
-
-/**
- * usb_endpoint_num - get the endpoint's number
- * @epd: endpoint to be checked
- *
- * Returns @epd's number: 0 to 15.
- */
-static inline int usb_endpoint_num(const struct usb_endpoint_descriptor *epd)
-{
- return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
-}
-
-/**
- * usb_endpoint_type - get the endpoint's transfer type
- * @epd: endpoint to be checked
- *
- * Returns one of USB_ENDPOINT_XFER_{CONTROL, ISOC, BULK, INT} according
- * to @epd's transfer type.
- */
-static inline int usb_endpoint_type(const struct usb_endpoint_descriptor *epd)
-{
- return epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
-}
-
-/**
- * usb_endpoint_dir_in - check if the endpoint has IN direction
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type IN, otherwise it returns false.
- */
-static inline int usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN);
-}
-
-/**
- * usb_endpoint_dir_out - check if the endpoint has OUT direction
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type OUT, otherwise it returns false.
- */
-static inline int usb_endpoint_dir_out(
- const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT);
-}
-
-/**
- * usb_endpoint_xfer_bulk - check if the endpoint has bulk transfer type
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type bulk, otherwise it returns false.
- */
-static inline int usb_endpoint_xfer_bulk(
- const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_BULK);
-}
-
-/**
- * usb_endpoint_xfer_control - check if the endpoint has control transfer type
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type control, otherwise it returns false.
- */
-static inline int usb_endpoint_xfer_control(
- const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_CONTROL);
-}
-
-/**
- * usb_endpoint_xfer_int - check if the endpoint has interrupt transfer type
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type interrupt, otherwise it returns
- * false.
- */
-static inline int usb_endpoint_xfer_int(
- const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_INT);
-}
-
-/**
- * usb_endpoint_xfer_isoc - check if the endpoint has isochronous transfer type
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type isochronous, otherwise it returns
- * false.
- */
-static inline int usb_endpoint_xfer_isoc(
- const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_ISOC);
-}
-
-/**
- * usb_endpoint_is_bulk_in - check if the endpoint is bulk IN
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has bulk transfer type and IN direction,
- * otherwise it returns false.
- */
-static inline int usb_endpoint_is_bulk_in(
- const struct usb_endpoint_descriptor *epd)
-{
- return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_in(epd);
-}
-
-/**
- * usb_endpoint_is_bulk_out - check if the endpoint is bulk OUT
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has bulk transfer type and OUT direction,
- * otherwise it returns false.
- */
-static inline int usb_endpoint_is_bulk_out(
- const struct usb_endpoint_descriptor *epd)
-{
- return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_out(epd);
-}
-
-/**
- * usb_endpoint_is_int_in - check if the endpoint is interrupt IN
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has interrupt transfer type and IN direction,
- * otherwise it returns false.
- */
-static inline int usb_endpoint_is_int_in(
- const struct usb_endpoint_descriptor *epd)
-{
- return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_in(epd);
-}
-
-/**
- * usb_endpoint_is_int_out - check if the endpoint is interrupt OUT
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has interrupt transfer type and OUT direction,
- * otherwise it returns false.
- */
-static inline int usb_endpoint_is_int_out(
- const struct usb_endpoint_descriptor *epd)
-{
- return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_out(epd);
-}
-
-/**
- * usb_endpoint_is_isoc_in - check if the endpoint is isochronous IN
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has isochronous transfer type and IN direction,
- * otherwise it returns false.
- */
-static inline int usb_endpoint_is_isoc_in(
- const struct usb_endpoint_descriptor *epd)
-{
- return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_in(epd);
-}
-
-/**
- * usb_endpoint_is_isoc_out - check if the endpoint is isochronous OUT
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has isochronous transfer type and OUT direction,
- * otherwise it returns false.
- */
-static inline int usb_endpoint_is_isoc_out(
- const struct usb_endpoint_descriptor *epd)
-{
- return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_out(epd);
-}
-
-/**
- * usb_endpoint_maxp - get endpoint's max packet size
- * @epd: endpoint to be checked
- *
- * Returns @epd's max packet
- */
-static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd)
-{
- return __le16_to_cpu(get_unaligned(&epd->wMaxPacketSize));
-}
-
-static inline int usb_endpoint_interrupt_type(
- const struct usb_endpoint_descriptor *epd)
-{
- return epd->bmAttributes & USB_ENDPOINT_INTRTYPE;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_SS_ENDPOINT_COMP: SuperSpeed Endpoint Companion descriptor */
-struct usb_ss_ep_comp_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __u8 bMaxBurst;
- __u8 bmAttributes;
- __le16 wBytesPerInterval;
-} __attribute__ ((packed));
-
-#define USB_DT_SS_EP_COMP_SIZE 6
-
-/* Bits 4:0 of bmAttributes if this is a bulk endpoint */
-static inline int
-usb_ss_max_streams(const struct usb_ss_ep_comp_descriptor *comp)
-{
- int max_streams;
-
- if (!comp)
- return 0;
-
- max_streams = comp->bmAttributes & 0x1f;
-
- if (!max_streams)
- return 0;
-
- max_streams = 1 << max_streams;
-
- return max_streams;
-}
-
-/* Bits 1:0 of bmAttributes if this is an isoc endpoint */
-#define USB_SS_MULT(p) (1 + ((p) & 0x3))
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_DEVICE_QUALIFIER: Device Qualifier descriptor */
-struct usb_qualifier_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __le16 bcdUSB;
- __u8 bDeviceClass;
- __u8 bDeviceSubClass;
- __u8 bDeviceProtocol;
- __u8 bMaxPacketSize0;
- __u8 bNumConfigurations;
- __u8 bRESERVED;
-} __attribute__ ((packed));
-
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_OTG (from OTG 1.0a supplement) */
-struct usb_otg_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __u8 bmAttributes; /* support for HNP, SRP, etc */
-} __attribute__ ((packed));
-
-/* from usb_otg_descriptor.bmAttributes */
-#define USB_OTG_SRP (1 << 0)
-#define USB_OTG_HNP (1 << 1) /* swap host/device roles */
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_DEBUG: for special highspeed devices, replacing serial console */
-struct usb_debug_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- /* bulk endpoints with 8 byte maxpacket */
- __u8 bDebugInEndpoint;
- __u8 bDebugOutEndpoint;
-} __attribute__((packed));
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_INTERFACE_ASSOCIATION: groups interfaces */
-struct usb_interface_assoc_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __u8 bFirstInterface;
- __u8 bInterfaceCount;
- __u8 bFunctionClass;
- __u8 bFunctionSubClass;
- __u8 bFunctionProtocol;
- __u8 iFunction;
-} __attribute__ ((packed));
-
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_SECURITY: group of wireless security descriptors, including
- * encryption types available for setting up a CC/association.
- */
-struct usb_security_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __le16 wTotalLength;
- __u8 bNumEncryptionTypes;
-} __attribute__((packed));
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_KEY: used with {GET,SET}_SECURITY_DATA; only public keys
- * may be retrieved.
- */
-struct usb_key_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __u8 tTKID[3];
- __u8 bReserved;
- __u8 bKeyData[0];
-} __attribute__((packed));
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_ENCRYPTION_TYPE: bundled in DT_SECURITY groups */
-struct usb_encryption_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __u8 bEncryptionType;
-#define USB_ENC_TYPE_UNSECURE 0
-#define USB_ENC_TYPE_WIRED 1 /* non-wireless mode */
-#define USB_ENC_TYPE_CCM_1 2 /* aes128/cbc session */
-#define USB_ENC_TYPE_RSA_1 3 /* rsa3072/sha1 auth */
- __u8 bEncryptionValue; /* use in SET_ENCRYPTION */
- __u8 bAuthKeyIndex;
-} __attribute__((packed));
-
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_BOS: group of device-level capabilities */
-struct usb_bos_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __le16 wTotalLength;
- __u8 bNumDeviceCaps;
-} __attribute__((packed));
-
-#define USB_DT_BOS_SIZE 5
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_DEVICE_CAPABILITY: grouped with BOS */
-struct usb_dev_cap_header {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDevCapabilityType;
-} __attribute__((packed));
-
-#define USB_CAP_TYPE_WIRELESS_USB 1
-
-struct usb_wireless_cap_descriptor { /* Ultra Wide Band */
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDevCapabilityType;
-
- __u8 bmAttributes;
-#define USB_WIRELESS_P2P_DRD (1 << 1)
-#define USB_WIRELESS_BEACON_MASK (3 << 2)
-#define USB_WIRELESS_BEACON_SELF (1 << 2)
-#define USB_WIRELESS_BEACON_DIRECTED (2 << 2)
-#define USB_WIRELESS_BEACON_NONE (3 << 2)
- __le16 wPHYRates; /* bit rates, Mbps */
-#define USB_WIRELESS_PHY_53 (1 << 0) /* always set */
-#define USB_WIRELESS_PHY_80 (1 << 1)
-#define USB_WIRELESS_PHY_107 (1 << 2) /* always set */
-#define USB_WIRELESS_PHY_160 (1 << 3)
-#define USB_WIRELESS_PHY_200 (1 << 4) /* always set */
-#define USB_WIRELESS_PHY_320 (1 << 5)
-#define USB_WIRELESS_PHY_400 (1 << 6)
-#define USB_WIRELESS_PHY_480 (1 << 7)
- __u8 bmTFITXPowerInfo; /* TFI power levels */
- __u8 bmFFITXPowerInfo; /* FFI power levels */
- __le16 bmBandGroup;
- __u8 bReserved;
-} __attribute__((packed));
-
-/* USB 2.0 Extension descriptor */
-#define USB_CAP_TYPE_EXT 2
-
-struct usb_ext_cap_descriptor { /* Link Power Management */
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDevCapabilityType;
- __le32 bmAttributes;
-#define USB_LPM_SUPPORT (1 << 1) /* supports LPM */
-#define USB_BESL_SUPPORT (1 << 2) /* supports BESL */
-#define USB_BESL_BASELINE_VALID (1 << 3) /* Baseline BESL valid*/
-#define USB_BESL_DEEP_VALID (1 << 4) /* Deep BESL valid */
-#define USB_GET_BESL_BASELINE(p) (((p) & (0xf << 8)) >> 8)
-#define USB_GET_BESL_DEEP(p) (((p) & (0xf << 12)) >> 12)
-} __attribute__((packed));
-
-#define USB_DT_USB_EXT_CAP_SIZE 7
-
-/*
- * SuperSpeed USB Capability descriptor: Defines the set of SuperSpeed USB
- * specific device level capabilities
- */
-#define USB_SS_CAP_TYPE 3
-struct usb_ss_cap_descriptor { /* Link Power Management */
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDevCapabilityType;
- __u8 bmAttributes;
-#define USB_LTM_SUPPORT (1 << 1) /* supports LTM */
- __le16 wSpeedSupported;
-#define USB_LOW_SPEED_OPERATION (1) /* Low speed operation */
-#define USB_FULL_SPEED_OPERATION (1 << 1) /* Full speed operation */
-#define USB_HIGH_SPEED_OPERATION (1 << 2) /* High speed operation */
-#define USB_5GBPS_OPERATION (1 << 3) /* Operation at 5Gbps */
- __u8 bFunctionalitySupport;
- __u8 bU1devExitLat;
- __le16 bU2DevExitLat;
-} __attribute__((packed));
-
-#define USB_DT_USB_SS_CAP_SIZE 10
-
-/*
- * Container ID Capability descriptor: Defines the instance unique ID used to
- * identify the instance across all operating modes
- */
-#define CONTAINER_ID_TYPE 4
-struct usb_ss_container_id_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
- __u8 bDevCapabilityType;
- __u8 bReserved;
- __u8 ContainerID[16]; /* 128-bit number */
-} __attribute__((packed));
-
-#define USB_DT_USB_SS_CONTN_ID_SIZE 20
-/*-------------------------------------------------------------------------*/
-
-/* USB_DT_WIRELESS_ENDPOINT_COMP: companion descriptor associated with
- * each endpoint descriptor for a wireless device
- */
-struct usb_wireless_ep_comp_descriptor {
- __u8 bLength;
- __u8 bDescriptorType;
-
- __u8 bMaxBurst;
- __u8 bMaxSequence;
- __le16 wMaxStreamDelay;
- __le16 wOverTheAirPacketSize;
- __u8 bOverTheAirInterval;
- __u8 bmCompAttributes;
-#define USB_ENDPOINT_SWITCH_MASK 0x03 /* in bmCompAttributes */
-#define USB_ENDPOINT_SWITCH_NO 0
-#define USB_ENDPOINT_SWITCH_SWITCH 1
-#define USB_ENDPOINT_SWITCH_SCALE 2
-} __attribute__((packed));
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_REQ_SET_HANDSHAKE is a four-way handshake used between a wireless
- * host and a device for connection set up, mutual authentication, and
- * exchanging short lived session keys. The handshake depends on a CC.
- */
-struct usb_handshake {
- __u8 bMessageNumber;
- __u8 bStatus;
- __u8 tTKID[3];
- __u8 bReserved;
- __u8 CDID[16];
- __u8 nonce[16];
- __u8 MIC[8];
-} __attribute__((packed));
-
-/*-------------------------------------------------------------------------*/
-
-/* USB_REQ_SET_CONNECTION modifies or revokes a connection context (CC).
- * A CC may also be set up using non-wireless secure channels (including
- * wired USB!), and some devices may support CCs with multiple hosts.
- */
-struct usb_connection_context {
- __u8 CHID[16]; /* persistent host id */
- __u8 CDID[16]; /* device id (unique w/in host context) */
- __u8 CK[16]; /* connection key */
-} __attribute__((packed));
-
-/*-------------------------------------------------------------------------*/
-
-/* USB 2.0 defines three speeds, here's how Linux identifies them */
-
-enum usb_device_speed {
- USB_SPEED_UNKNOWN = 0, /* enumerating */
- USB_SPEED_LOW, USB_SPEED_FULL, /* usb 1.1 */
- USB_SPEED_HIGH, /* usb 2.0 */
- USB_SPEED_WIRELESS, /* wireless (usb 2.5) */
- USB_SPEED_SUPER, /* usb 3.0 */
-};
-
-#ifdef __KERNEL__
-
-/**
- * usb_speed_string() - Returns human readable-name of the speed.
- * @speed: The speed to return human-readable name for. If it's not
- * any of the speeds defined in usb_device_speed enum, string for
- * USB_SPEED_UNKNOWN will be returned.
- */
-extern const char *usb_speed_string(enum usb_device_speed speed);
-
-#endif
-
-enum usb_device_state {
- /* NOTATTACHED isn't in the USB spec, and this state acts
- * the same as ATTACHED ... but it's clearer this way.
- */
- USB_STATE_NOTATTACHED = 0,
-
- /* chapter 9 and authentication (wireless) device states */
- USB_STATE_ATTACHED,
- USB_STATE_POWERED, /* wired */
- USB_STATE_RECONNECTING, /* auth */
- USB_STATE_UNAUTHENTICATED, /* auth */
- USB_STATE_DEFAULT, /* limited function */
- USB_STATE_ADDRESS,
- USB_STATE_CONFIGURED, /* most functions */
-
- USB_STATE_SUSPENDED
-
- /* NOTE: there are actually four different SUSPENDED
- * states, returning to POWERED, DEFAULT, ADDRESS, or
- * CONFIGURED respectively when SOF tokens flow again.
- * At this level there's no difference between L1 and L2
- * suspend states. (L2 being original USB 1.1 suspend.)
- */
-};
-
-enum usb3_link_state {
- USB3_LPM_U0 = 0,
- USB3_LPM_U1,
- USB3_LPM_U2,
- USB3_LPM_U3
-};
-
-/*
- * A U1 timeout of 0x0 means the parent hub will reject any transitions to U1.
- * 0xff means the parent hub will accept transitions to U1, but will not
- * initiate a transition.
- *
- * A U1 timeout of 0x1 to 0x7F also causes the hub to initiate a transition to
- * U1 after that many microseconds. Timeouts of 0x80 to 0xFE are reserved
- * values.
- *
- * A U2 timeout of 0x0 means the parent hub will reject any transitions to U2.
- * 0xff means the parent hub will accept transitions to U2, but will not
- * initiate a transition.
- *
- * A U2 timeout of 0x1 to 0xFE also causes the hub to initiate a transition to
- * U2 after N*256 microseconds. Therefore a U2 timeout value of 0x1 means a U2
- * idle timer of 256 microseconds, 0x2 means 512 microseconds, 0xFE means
- * 65.024ms.
- */
-#define USB3_LPM_DISABLED 0x0
-#define USB3_LPM_U1_MAX_TIMEOUT 0x7F
-#define USB3_LPM_U2_MAX_TIMEOUT 0xFE
-#define USB3_LPM_DEVICE_INITIATED 0xFF
-
-struct usb_set_sel_req {
- __u8 u1_sel;
- __u8 u1_pel;
- __le16 u2_sel;
- __le16 u2_pel;
-} __attribute__ ((packed));
-
-/*
- * The Set System Exit Latency control transfer provides one byte each for
- * U1 SEL and U1 PEL, so the max exit latency is 0xFF. U2 SEL and U2 PEL each
- * are two bytes long.
- */
-#define USB3_LPM_MAX_U1_SEL_PEL 0xFF
-#define USB3_LPM_MAX_U2_SEL_PEL 0xFFFF
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * As per USB compliance update, a device that is actively drawing
- * more than 100mA from USB must report itself as bus-powered in
- * the GetStatus(DEVICE) call.
- * http://compliance.usb.org/index.asp?UpdateFile=Electrical&Format=Standard#34
- */
-#define USB_SELF_POWER_VBUS_MAX_DRAW 100
-
-#endif /* __LINUX_USB_CH9_H */
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
deleted file mode 100644
index f833d10..0000000
--- a/include/linux/usb/composite.h
+++ /dev/null
@@ -1,338 +0,0 @@
-/*
- * composite.h -- framework for usb gadgets which are composite devices
- *
- * Copyright (C) 2006-2008 David Brownell
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#ifndef __LINUX_USB_COMPOSITE_H
-#define __LINUX_USB_COMPOSITE_H
-
-/*
- * This framework is an optional layer on top of the USB Gadget interface,
- * making it easier to build (a) Composite devices, supporting multiple
- * functions within any single configuration, and (b) Multi-configuration
- * devices, also supporting multiple functions but without necessarily
- * having more than one function per configuration.
- *
- * Example: a device with a single configuration supporting both network
- * link and mass storage functions is a composite device. Those functions
- * might alternatively be packaged in individual configurations, but in
- * the composite model the host can use both functions at the same time.
- */
-
-#include <common.h>
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-#include <usb/lin_gadget_compat.h>
-
-struct usb_configuration;
-
-/**
- * struct usb_function - describes one function of a configuration
- * @name: For diagnostics, identifies the function.
- * @strings: tables of strings, keyed by identifiers assigned during bind()
- * and by language IDs provided in control requests
- * @descriptors: Table of full (or low) speed descriptors, using interface and
- * string identifiers assigned during @bind(). If this pointer is null,
- * the function will not be available at full speed (or at low speed).
- * @hs_descriptors: Table of high speed descriptors, using interface and
- * string identifiers assigned during @bind(). If this pointer is null,
- * the function will not be available at high speed.
- * @config: assigned when @usb_add_function() is called; this is the
- * configuration with which this function is associated.
- * @bind: Before the gadget can register, all of its functions bind() to the
- * available resources including string and interface identifiers used
- * in interface or class descriptors; endpoints; I/O buffers; and so on.
- * @unbind: Reverses @bind; called as a side effect of unregistering the
- * driver which added this function.
- * @set_alt: (REQUIRED) Reconfigures altsettings; function drivers may
- * initialize usb_ep.driver data at this time (when it is used).
- * Note that setting an interface to its current altsetting resets
- * interface state, and that all interfaces have a disabled state.
- * @get_alt: Returns the active altsetting. If this is not provided,
- * then only altsetting zero is supported.
- * @disable: (REQUIRED) Indicates the function should be disabled. Reasons
- * include host resetting or reconfiguring the gadget, and disconnection.
- * @setup: Used for interface-specific control requests.
- * @suspend: Notifies functions when the host stops sending USB traffic.
- * @resume: Notifies functions when the host restarts USB traffic.
- *
- * A single USB function uses one or more interfaces, and should in most
- * cases support operation at both full and high speeds. Each function is
- * associated by @usb_add_function() with a one configuration; that function
- * causes @bind() to be called so resources can be allocated as part of
- * setting up a gadget driver. Those resources include endpoints, which
- * should be allocated using @usb_ep_autoconfig().
- *
- * To support dual speed operation, a function driver provides descriptors
- * for both high and full speed operation. Except in rare cases that don't
- * involve bulk endpoints, each speed needs different endpoint descriptors.
- *
- * Function drivers choose their own strategies for managing instance data.
- * The simplest strategy just declares it "static', which means the function
- * can only be activated once. If the function needs to be exposed in more
- * than one configuration at a given speed, it needs to support multiple
- * usb_function structures (one for each configuration).
- *
- * A more complex strategy might encapsulate a @usb_function structure inside
- * a driver-specific instance structure to allows multiple activations. An
- * example of multiple activations might be a CDC ACM function that supports
- * two or more distinct instances within the same configuration, providing
- * several independent logical data links to a USB host.
- */
-struct usb_function {
- const char *name;
- struct usb_gadget_strings **strings;
- struct usb_descriptor_header **descriptors;
- struct usb_descriptor_header **hs_descriptors;
-
- struct usb_configuration *config;
-
- /* REVISIT: bind() functions can be marked __init, which
- * makes trouble for section mismatch analysis. See if
- * we can't restructure things to avoid mismatching.
- * Related: unbind() may kfree() but bind() won't...
- */
-
- /* configuration management: bind/unbind */
- int (*bind)(struct usb_configuration *,
- struct usb_function *);
- void (*unbind)(struct usb_configuration *,
- struct usb_function *);
-
- /* runtime state management */
- int (*set_alt)(struct usb_function *,
- unsigned interface, unsigned alt);
- int (*get_alt)(struct usb_function *,
- unsigned interface);
- void (*disable)(struct usb_function *);
- int (*setup)(struct usb_function *,
- const struct usb_ctrlrequest *);
- void (*suspend)(struct usb_function *);
- void (*resume)(struct usb_function *);
-
- /* private: */
- /* internals */
- struct list_head list;
- DECLARE_BITMAP(endpoints, 32);
-};
-
-int usb_add_function(struct usb_configuration *, struct usb_function *);
-
-int usb_function_deactivate(struct usb_function *);
-int usb_function_activate(struct usb_function *);
-
-int usb_interface_id(struct usb_configuration *, struct usb_function *);
-
-/**
- * ep_choose - select descriptor endpoint at current device speed
- * @g: gadget, connected and running at some speed
- * @hs: descriptor to use for high speed operation
- * @fs: descriptor to use for full or low speed operation
- */
-static inline struct usb_endpoint_descriptor *
-ep_choose(struct usb_gadget *g, struct usb_endpoint_descriptor *hs,
- struct usb_endpoint_descriptor *fs)
-{
- if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
- return hs;
- return fs;
-}
-
-#define MAX_CONFIG_INTERFACES 16 /* arbitrary; max 255 */
-
-/**
- * struct usb_configuration - represents one gadget configuration
- * @label: For diagnostics, describes the configuration.
- * @strings: Tables of strings, keyed by identifiers assigned during @bind()
- * and by language IDs provided in control requests.
- * @descriptors: Table of descriptors preceding all function descriptors.
- * Examples include OTG and vendor-specific descriptors.
- * @bind: Called from @usb_add_config() to allocate resources unique to this
- * configuration and to call @usb_add_function() for each function used.
- * @unbind: Reverses @bind; called as a side effect of unregistering the
- * driver which added this configuration.
- * @setup: Used to delegate control requests that aren't handled by standard
- * device infrastructure or directed at a specific interface.
- * @bConfigurationValue: Copied into configuration descriptor.
- * @iConfiguration: Copied into configuration descriptor.
- * @bmAttributes: Copied into configuration descriptor.
- * @bMaxPower: Copied into configuration descriptor.
- * @cdev: assigned by @usb_add_config() before calling @bind(); this is
- * the device associated with this configuration.
- *
- * Configurations are building blocks for gadget drivers structured around
- * function drivers. Simple USB gadgets require only one function and one
- * configuration, and handle dual-speed hardware by always providing the same
- * functionality. Slightly more complex gadgets may have more than one
- * single-function configuration at a given speed; or have configurations
- * that only work at one speed.
- *
- * Composite devices are, by definition, ones with configurations which
- * include more than one function.
- *
- * The lifecycle of a usb_configuration includes allocation, initialization
- * of the fields described above, and calling @usb_add_config() to set up
- * internal data and bind it to a specific device. The configuration's
- * @bind() method is then used to initialize all the functions and then
- * call @usb_add_function() for them.
- *
- * Those functions would normally be independant of each other, but that's
- * not mandatory. CDC WMC devices are an example where functions often
- * depend on other functions, with some functions subsidiary to others.
- * Such interdependency may be managed in any way, so long as all of the
- * descriptors complete by the time the composite driver returns from
- * its bind() routine.
- */
-struct usb_configuration {
- const char *label;
- struct usb_gadget_strings **strings;
- const struct usb_descriptor_header **descriptors;
-
- /* REVISIT: bind() functions can be marked __init, which
- * makes trouble for section mismatch analysis. See if
- * we can't restructure things to avoid mismatching...
- */
-
- /* configuration management: bind/unbind */
- int (*bind)(struct usb_configuration *);
- void (*unbind)(struct usb_configuration *);
- int (*setup)(struct usb_configuration *,
- const struct usb_ctrlrequest *);
-
- /* fields in the config descriptor */
- u8 bConfigurationValue;
- u8 iConfiguration;
- u8 bmAttributes;
- u8 bMaxPower;
-
- struct usb_composite_dev *cdev;
-
- /* private: */
- /* internals */
- struct list_head list;
- struct list_head functions;
- u8 next_interface_id;
- unsigned highspeed:1;
- unsigned fullspeed:1;
- struct usb_function *interface[MAX_CONFIG_INTERFACES];
-};
-
-int usb_add_config(struct usb_composite_dev *,
- struct usb_configuration *);
-
-/**
- * struct usb_composite_driver - groups configurations into a gadget
- * @name: For diagnostics, identifies the driver.
- * @dev: Template descriptor for the device, including default device
- * identifiers.
- * @strings: tables of strings, keyed by identifiers assigned during bind()
- * and language IDs provided in control requests
- * @bind: (REQUIRED) Used to allocate resources that are shared across the
- * whole device, such as string IDs, and add its configurations using
- * @usb_add_config(). This may fail by returning a negative errno
- * value; it should return zero on successful initialization.
- * @unbind: Reverses @bind(); called as a side effect of unregistering
- * this driver.
- * @disconnect: optional driver disconnect method
- * @suspend: Notifies when the host stops sending USB traffic,
- * after function notifications
- * @resume: Notifies configuration when the host restarts USB traffic,
- * before function notifications
- *
- * Devices default to reporting self powered operation. Devices which rely
- * on bus powered operation should report this in their @bind() method.
- *
- * Before returning from @bind, various fields in the template descriptor
- * may be overridden. These include the idVendor/idProduct/bcdDevice values
- * normally to bind the appropriate host side driver, and the three strings
- * (iManufacturer, iProduct, iSerialNumber) normally used to provide user
- * meaningful device identifiers. (The strings will not be defined unless
- * they are defined in @dev and @strings.) The correct ep0 maxpacket size
- * is also reported, as defined by the underlying controller driver.
- */
-struct usb_composite_driver {
- const char *name;
- const struct usb_device_descriptor *dev;
- struct usb_gadget_strings **strings;
-
- /* REVISIT: bind() functions can be marked __init, which
- * makes trouble for section mismatch analysis. See if
- * we can't restructure things to avoid mismatching...
- */
-
- int (*bind)(struct usb_composite_dev *);
- int (*unbind)(struct usb_composite_dev *);
-
- void (*disconnect)(struct usb_composite_dev *);
-
- /* global suspend hooks */
- void (*suspend)(struct usb_composite_dev *);
- void (*resume)(struct usb_composite_dev *);
-};
-
-extern int usb_composite_register(struct usb_composite_driver *);
-extern void usb_composite_unregister(struct usb_composite_driver *);
-
-
-/**
- * struct usb_composite_device - represents one composite usb gadget
- * @gadget: read-only, abstracts the gadget's usb peripheral controller
- * @req: used for control responses; buffer is pre-allocated
- * @bufsiz: size of buffer pre-allocated in @req
- * @config: the currently active configuration
- *
- * One of these devices is allocated and initialized before the
- * associated device driver's bind() is called.
- *
- * OPEN ISSUE: it appears that some WUSB devices will need to be
- * built by combining a normal (wired) gadget with a wireless one.
- * This revision of the gadget framework should probably try to make
- * sure doing that won't hurt too much.
- *
- * One notion for how to handle Wireless USB devices involves:
- * (a) a second gadget here, discovery mechanism TBD, but likely
- * needing separate "register/unregister WUSB gadget" calls;
- * (b) updates to usb_gadget to include flags "is it wireless",
- * "is it wired", plus (presumably in a wrapper structure)
- * bandgroup and PHY info;
- * (c) presumably a wireless_ep wrapping a usb_ep, and reporting
- * wireless-specific parameters like maxburst and maxsequence;
- * (d) configurations that are specific to wireless links;
- * (e) function drivers that understand wireless configs and will
- * support wireless for (additional) function instances;
- * (f) a function to support association setup (like CBAF), not
- * necessarily requiring a wireless adapter;
- * (g) composite device setup that can create one or more wireless
- * configs, including appropriate association setup support;
- * (h) more, TBD.
- */
-struct usb_composite_dev {
- struct usb_gadget *gadget;
- struct usb_request *req;
- unsigned bufsiz;
-
- struct usb_configuration *config;
-
- /* private: */
- /* internals */
- unsigned int suspended:1;
- struct usb_device_descriptor __aligned(CONFIG_SYS_CACHELINE_SIZE) desc;
- struct list_head configs;
- struct usb_composite_driver *driver;
- u8 next_string_id;
-
- /* the gadget driver won't enable the data pullup
- * while the deactivation count is nonzero.
- */
- unsigned deactivations;
-};
-
-extern int usb_string_id(struct usb_composite_dev *c);
-extern int usb_string_ids_tab(struct usb_composite_dev *c,
- struct usb_string *str);
-extern int usb_string_ids_n(struct usb_composite_dev *c, unsigned n);
-
-#endif /* __LINUX_USB_COMPOSITE_H */
diff --git a/include/linux/usb/dwc3.h b/include/linux/usb/dwc3.h
deleted file mode 100644
index 97d179a..0000000
--- a/include/linux/usb/dwc3.h
+++ /dev/null
@@ -1,188 +0,0 @@
-/* include/linux/usb/dwc3.h
- *
- * Copyright (c) 2012 Samsung Electronics Co. Ltd
- *
- * Designware SuperSpeed USB 3.0 DRD Controller global and OTG registers
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#ifndef __DWC3_H_
-#define __DWC3_H_
-
-/* Global constants */
-#define DWC3_ENDPOINTS_NUM 32
-
-#define DWC3_EVENT_BUFFERS_SIZE PAGE_SIZE
-#define DWC3_EVENT_TYPE_MASK 0xfe
-
-#define DWC3_EVENT_TYPE_DEV 0
-#define DWC3_EVENT_TYPE_CARKIT 3
-#define DWC3_EVENT_TYPE_I2C 4
-
-#define DWC3_DEVICE_EVENT_DISCONNECT 0
-#define DWC3_DEVICE_EVENT_RESET 1
-#define DWC3_DEVICE_EVENT_CONNECT_DONE 2
-#define DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE 3
-#define DWC3_DEVICE_EVENT_WAKEUP 4
-#define DWC3_DEVICE_EVENT_EOPF 6
-#define DWC3_DEVICE_EVENT_SOF 7
-#define DWC3_DEVICE_EVENT_ERRATIC_ERROR 9
-#define DWC3_DEVICE_EVENT_CMD_CMPL 10
-#define DWC3_DEVICE_EVENT_OVERFLOW 11
-
-#define DWC3_GEVNTCOUNT_MASK 0xfffc
-#define DWC3_GSNPSID_MASK 0xffff0000
-#define DWC3_GSNPSID_SHIFT 16
-#define DWC3_GSNPSREV_MASK 0xffff
-
-#define DWC3_REVISION_MASK 0xffff
-
-#define DWC3_REG_OFFSET 0xC100
-
-struct g_event_buffer {
- u64 g_evntadr;
- u32 g_evntsiz;
- u32 g_evntcount;
-};
-
-struct d_physical_endpoint {
- u32 d_depcmdpar2;
- u32 d_depcmdpar1;
- u32 d_depcmdpar0;
- u32 d_depcmd;
-};
-
-struct dwc3 { /* offset: 0xC100 */
- u32 g_sbuscfg0;
- u32 g_sbuscfg1;
- u32 g_txthrcfg;
- u32 g_rxthrcfg;
- u32 g_ctl;
-
- u32 reserved1;
-
- u32 g_sts;
-
- u32 reserved2;
-
- u32 g_snpsid;
- u32 g_gpio;
- u32 g_uid;
- u32 g_uctl;
- u64 g_buserraddr;
- u64 g_prtbimap;
-
- u32 g_hwparams0;
- u32 g_hwparams1;
- u32 g_hwparams2;
- u32 g_hwparams3;
- u32 g_hwparams4;
- u32 g_hwparams5;
- u32 g_hwparams6;
- u32 g_hwparams7;
-
- u32 g_dbgfifospace;
- u32 g_dbgltssm;
- u32 g_dbglnmcc;
- u32 g_dbgbmu;
- u32 g_dbglspmux;
- u32 g_dbglsp;
- u32 g_dbgepinfo0;
- u32 g_dbgepinfo1;
-
- u64 g_prtbimap_hs;
- u64 g_prtbimap_fs;
-
- u32 reserved3[28];
-
- u32 g_usb2phycfg[16];
- u32 g_usb2i2cctl[16];
- u32 g_usb2phyacc[16];
- u32 g_usb3pipectl[16];
-
- u32 g_txfifosiz[32];
- u32 g_rxfifosiz[32];
-
- struct g_event_buffer g_evnt_buf[32];
-
- u32 g_hwparams8;
-
- u32 reserved4[63];
-
- u32 d_cfg;
- u32 d_ctl;
- u32 d_evten;
- u32 d_sts;
- u32 d_gcmdpar;
- u32 d_gcmd;
-
- u32 reserved5[2];
-
- u32 d_alepena;
-
- u32 reserved6[55];
-
- struct d_physical_endpoint d_phy_ep_cmd[32];
-
- u32 reserved7[128];
-
- u32 o_cfg;
- u32 o_ctl;
- u32 o_evt;
- u32 o_evten;
- u32 o_sts;
-
- u32 reserved8[3];
-
- u32 adp_cfg;
- u32 adp_ctl;
- u32 adp_evt;
- u32 adp_evten;
-
- u32 bc_cfg;
-
- u32 reserved9;
-
- u32 bc_evt;
- u32 bc_evten;
-};
-
-/* Global Configuration Register */
-#define DWC3_GCTL_PWRDNSCALE(n) ((n) << 19)
-#define DWC3_GCTL_U2RSTECN (1 << 16)
-#define DWC3_GCTL_RAMCLKSEL(x) \
- (((x) & DWC3_GCTL_CLK_MASK) << 6)
-#define DWC3_GCTL_CLK_BUS (0)
-#define DWC3_GCTL_CLK_PIPE (1)
-#define DWC3_GCTL_CLK_PIPEHALF (2)
-#define DWC3_GCTL_CLK_MASK (3)
-#define DWC3_GCTL_PRTCAP(n) (((n) & (3 << 12)) >> 12)
-#define DWC3_GCTL_PRTCAPDIR(n) ((n) << 12)
-#define DWC3_GCTL_PRTCAP_HOST 1
-#define DWC3_GCTL_PRTCAP_DEVICE 2
-#define DWC3_GCTL_PRTCAP_OTG 3
-#define DWC3_GCTL_CORESOFTRESET (1 << 11)
-#define DWC3_GCTL_SCALEDOWN(n) ((n) << 4)
-#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3)
-#define DWC3_GCTL_DISSCRAMBLE (1 << 3)
-#define DWC3_GCTL_DSBLCLKGTNG (1 << 0)
-
-/* Global HWPARAMS1 Register */
-#define DWC3_GHWPARAMS1_EN_PWROPT(n) (((n) & (3 << 24)) >> 24)
-#define DWC3_GHWPARAMS1_EN_PWROPT_NO 0
-#define DWC3_GHWPARAMS1_EN_PWROPT_CLK 1
-
-/* Global USB2 PHY Configuration Register */
-#define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31)
-#define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6)
-
-/* Global USB3 PIPE Control Register */
-#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
-#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
-
-/* Global TX Fifo Size Register */
-#define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff)
-#define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000)
-
-#endif /* __DWC3_H_ */
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
deleted file mode 100644
index a8a5763..0000000
--- a/include/linux/usb/gadget.h
+++ /dev/null
@@ -1,864 +0,0 @@
-/*
- * <linux/usb/gadget.h>
- *
- * We call the USB code inside a Linux-based peripheral device a "gadget"
- * driver, except for the hardware-specific bus glue. One USB host can
- * master many USB gadgets, but the gadgets are only slaved to one host.
- *
- *
- * (C) Copyright 2002-2004 by David Brownell
- * All Rights Reserved.
- *
- * This software is licensed under the GNU GPL version 2.
- *
- * Ported to U-boot by: Thomas Smits <ts.smits@gmail.com> and
- * Remy Bohmer <linux@bohmer.net>
- */
-
-#ifndef __LINUX_USB_GADGET_H
-#define __LINUX_USB_GADGET_H
-
-#include <errno.h>
-#include <linux/list.h>
-
-struct usb_ep;
-
-/**
- * struct usb_request - describes one i/o request
- * @buf: Buffer used for data. Always provide this; some controllers
- * only use PIO, or don't use DMA for some endpoints.
- * @dma: DMA address corresponding to 'buf'. If you don't set this
- * field, and the usb controller needs one, it is responsible
- * for mapping and unmapping the buffer.
- * @length: Length of that data
- * @no_interrupt: If true, hints that no completion irq is needed.
- * Helpful sometimes with deep request queues that are handled
- * directly by DMA controllers.
- * @zero: If true, when writing data, makes the last packet be "short"
- * by adding a zero length packet as needed;
- * @short_not_ok: When reading data, makes short packets be
- * treated as errors (queue stops advancing till cleanup).
- * @complete: Function called when request completes, so this request and
- * its buffer may be re-used.
- * Reads terminate with a short packet, or when the buffer fills,
- * whichever comes first. When writes terminate, some data bytes
- * will usually still be in flight (often in a hardware fifo).
- * Errors (for reads or writes) stop the queue from advancing
- * until the completion function returns, so that any transfers
- * invalidated by the error may first be dequeued.
- * @context: For use by the completion callback
- * @list: For use by the gadget driver.
- * @status: Reports completion code, zero or a negative errno.
- * Normally, faults block the transfer queue from advancing until
- * the completion callback returns.
- * Code "-ESHUTDOWN" indicates completion caused by device disconnect,
- * or when the driver disabled the endpoint.
- * @actual: Reports bytes transferred to/from the buffer. For reads (OUT
- * transfers) this may be less than the requested length. If the
- * short_not_ok flag is set, short reads are treated as errors
- * even when status otherwise indicates successful completion.
- * Note that for writes (IN transfers) some data bytes may still
- * reside in a device-side FIFO when the request is reported as
- * complete.
- *
- * These are allocated/freed through the endpoint they're used with. The
- * hardware's driver can add extra per-request data to the memory it returns,
- * which often avoids separate memory allocations (potential failures),
- * later when the request is queued.
- *
- * Request flags affect request handling, such as whether a zero length
- * packet is written (the "zero" flag), whether a short read should be
- * treated as an error (blocking request queue advance, the "short_not_ok"
- * flag), or hinting that an interrupt is not required (the "no_interrupt"
- * flag, for use with deep request queues).
- *
- * Bulk endpoints can use any size buffers, and can also be used for interrupt
- * transfers. interrupt-only endpoints can be much less functional.
- *
- * NOTE: this is analagous to 'struct urb' on the host side, except that
- * it's thinner and promotes more pre-allocation.
- */
-
-struct usb_request {
- void *buf;
- unsigned length;
- dma_addr_t dma;
-
- unsigned no_interrupt:1;
- unsigned zero:1;
- unsigned short_not_ok:1;
-
- void (*complete)(struct usb_ep *ep,
- struct usb_request *req);
- void *context;
- struct list_head list;
-
- int status;
- unsigned actual;
-};
-
-/*-------------------------------------------------------------------------*/
-
-/* endpoint-specific parts of the api to the usb controller hardware.
- * unlike the urb model, (de)multiplexing layers are not required.
- * (so this api could slash overhead if used on the host side...)
- *
- * note that device side usb controllers commonly differ in how many
- * endpoints they support, as well as their capabilities.
- */
-struct usb_ep_ops {
- int (*enable) (struct usb_ep *ep,
- const struct usb_endpoint_descriptor *desc);
- int (*disable) (struct usb_ep *ep);
-
- struct usb_request *(*alloc_request) (struct usb_ep *ep,
- gfp_t gfp_flags);
- void (*free_request) (struct usb_ep *ep, struct usb_request *req);
-
- int (*queue) (struct usb_ep *ep, struct usb_request *req,
- gfp_t gfp_flags);
- int (*dequeue) (struct usb_ep *ep, struct usb_request *req);
-
- int (*set_halt) (struct usb_ep *ep, int value);
- int (*fifo_status) (struct usb_ep *ep);
- void (*fifo_flush) (struct usb_ep *ep);
-};
-
-/**
- * struct usb_ep - device side representation of USB endpoint
- * @name:identifier for the endpoint, such as "ep-a" or "ep9in-bulk"
- * @ops: Function pointers used to access hardware-specific operations.
- * @ep_list:the gadget's ep_list holds all of its endpoints
- * @maxpacket:The maximum packet size used on this endpoint. The initial
- * value can sometimes be reduced (hardware allowing), according to
- * the endpoint descriptor used to configure the endpoint.
- * @driver_data:for use by the gadget driver. all other fields are
- * read-only to gadget drivers.
- *
- * the bus controller driver lists all the general purpose endpoints in
- * gadget->ep_list. the control endpoint (gadget->ep0) is not in that list,
- * and is accessed only in response to a driver setup() callback.
- */
-struct usb_ep {
- void *driver_data;
- const char *name;
- const struct usb_ep_ops *ops;
- struct list_head ep_list;
- unsigned maxpacket:16;
-};
-
-/*-------------------------------------------------------------------------*/
-
-/**
- * usb_ep_enable - configure endpoint, making it usable
- * @ep:the endpoint being configured. may not be the endpoint named "ep0".
- * drivers discover endpoints through the ep_list of a usb_gadget.
- * @desc:descriptor for desired behavior. caller guarantees this pointer
- * remains valid until the endpoint is disabled; the data byte order
- * is little-endian (usb-standard).
- *
- * when configurations are set, or when interface settings change, the driver
- * will enable or disable the relevant endpoints. while it is enabled, an
- * endpoint may be used for i/o until the driver receives a disconnect() from
- * the host or until the endpoint is disabled.
- *
- * the ep0 implementation (which calls this routine) must ensure that the
- * hardware capabilities of each endpoint match the descriptor provided
- * for it. for example, an endpoint named "ep2in-bulk" would be usable
- * for interrupt transfers as well as bulk, but it likely couldn't be used
- * for iso transfers or for endpoint 14. some endpoints are fully
- * configurable, with more generic names like "ep-a". (remember that for
- * USB, "in" means "towards the USB master".)
- *
- * returns zero, or a negative error code.
- */
-static inline int usb_ep_enable(struct usb_ep *ep,
- const struct usb_endpoint_descriptor *desc)
-{
- return ep->ops->enable(ep, desc);
-}
-
-/**
- * usb_ep_disable - endpoint is no longer usable
- * @ep:the endpoint being unconfigured. may not be the endpoint named "ep0".
- *
- * no other task may be using this endpoint when this is called.
- * any pending and uncompleted requests will complete with status
- * indicating disconnect (-ESHUTDOWN) before this call returns.
- * gadget drivers must call usb_ep_enable() again before queueing
- * requests to the endpoint.
- *
- * returns zero, or a negative error code.
- */
-static inline int usb_ep_disable(struct usb_ep *ep)
-{
- return ep->ops->disable(ep);
-}
-
-/**
- * usb_ep_alloc_request - allocate a request object to use with this endpoint
- * @ep:the endpoint to be used with with the request
- * @gfp_flags:GFP_* flags to use
- *
- * Request objects must be allocated with this call, since they normally
- * need controller-specific setup and may even need endpoint-specific
- * resources such as allocation of DMA descriptors.
- * Requests may be submitted with usb_ep_queue(), and receive a single
- * completion callback. Free requests with usb_ep_free_request(), when
- * they are no longer needed.
- *
- * Returns the request, or null if one could not be allocated.
- */
-static inline struct usb_request *usb_ep_alloc_request(struct usb_ep *ep,
- gfp_t gfp_flags)
-{
- return ep->ops->alloc_request(ep, gfp_flags);
-}
-
-/**
- * usb_ep_free_request - frees a request object
- * @ep:the endpoint associated with the request
- * @req:the request being freed
- *
- * Reverses the effect of usb_ep_alloc_request().
- * Caller guarantees the request is not queued, and that it will
- * no longer be requeued (or otherwise used).
- */
-static inline void usb_ep_free_request(struct usb_ep *ep,
- struct usb_request *req)
-{
- ep->ops->free_request(ep, req);
-}
-
-/**
- * usb_ep_queue - queues (submits) an I/O request to an endpoint.
- * @ep:the endpoint associated with the request
- * @req:the request being submitted
- * @gfp_flags: GFP_* flags to use in case the lower level driver couldn't
- * pre-allocate all necessary memory with the request.
- *
- * This tells the device controller to perform the specified request through
- * that endpoint (reading or writing a buffer). When the request completes,
- * including being canceled by usb_ep_dequeue(), the request's completion
- * routine is called to return the request to the driver. Any endpoint
- * (except control endpoints like ep0) may have more than one transfer
- * request queued; they complete in FIFO order. Once a gadget driver
- * submits a request, that request may not be examined or modified until it
- * is given back to that driver through the completion callback.
- *
- * Each request is turned into one or more packets. The controller driver
- * never merges adjacent requests into the same packet. OUT transfers
- * will sometimes use data that's already buffered in the hardware.
- * Drivers can rely on the fact that the first byte of the request's buffer
- * always corresponds to the first byte of some USB packet, for both
- * IN and OUT transfers.
- *
- * Bulk endpoints can queue any amount of data; the transfer is packetized
- * automatically. The last packet will be short if the request doesn't fill it
- * out completely. Zero length packets (ZLPs) should be avoided in portable
- * protocols since not all usb hardware can successfully handle zero length
- * packets. (ZLPs may be explicitly written, and may be implicitly written if
- * the request 'zero' flag is set.) Bulk endpoints may also be used
- * for interrupt transfers; but the reverse is not true, and some endpoints
- * won't support every interrupt transfer. (Such as 768 byte packets.)
- *
- * Interrupt-only endpoints are less functional than bulk endpoints, for
- * example by not supporting queueing or not handling buffers that are
- * larger than the endpoint's maxpacket size. They may also treat data
- * toggle differently.
- *
- * Control endpoints ... after getting a setup() callback, the driver queues
- * one response (even if it would be zero length). That enables the
- * status ack, after transfering data as specified in the response. Setup
- * functions may return negative error codes to generate protocol stalls.
- * (Note that some USB device controllers disallow protocol stall responses
- * in some cases.) When control responses are deferred (the response is
- * written after the setup callback returns), then usb_ep_set_halt() may be
- * used on ep0 to trigger protocol stalls.
- *
- * For periodic endpoints, like interrupt or isochronous ones, the usb host
- * arranges to poll once per interval, and the gadget driver usually will
- * have queued some data to transfer at that time.
- *
- * Returns zero, or a negative error code. Endpoints that are not enabled
- * report errors; errors will also be
- * reported when the usb peripheral is disconnected.
- */
-static inline int usb_ep_queue(struct usb_ep *ep,
- struct usb_request *req, gfp_t gfp_flags)
-{
- return ep->ops->queue(ep, req, gfp_flags);
-}
-
-/**
- * usb_ep_dequeue - dequeues (cancels, unlinks) an I/O request from an endpoint
- * @ep:the endpoint associated with the request
- * @req:the request being canceled
- *
- * if the request is still active on the endpoint, it is dequeued and its
- * completion routine is called (with status -ECONNRESET); else a negative
- * error code is returned.
- *
- * note that some hardware can't clear out write fifos (to unlink the request
- * at the head of the queue) except as part of disconnecting from usb. such
- * restrictions prevent drivers from supporting configuration changes,
- * even to configuration zero (a "chapter 9" requirement).
- */
-static inline int usb_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
-{
- return ep->ops->dequeue(ep, req);
-}
-
-/**
- * usb_ep_set_halt - sets the endpoint halt feature.
- * @ep: the non-isochronous endpoint being stalled
- *
- * Use this to stall an endpoint, perhaps as an error report.
- * Except for control endpoints,
- * the endpoint stays halted (will not stream any data) until the host
- * clears this feature; drivers may need to empty the endpoint's request
- * queue first, to make sure no inappropriate transfers happen.
- *
- * Note that while an endpoint CLEAR_FEATURE will be invisible to the
- * gadget driver, a SET_INTERFACE will not be. To reset endpoints for the
- * current altsetting, see usb_ep_clear_halt(). When switching altsettings,
- * it's simplest to use usb_ep_enable() or usb_ep_disable() for the endpoints.
- *
- * Returns zero, or a negative error code. On success, this call sets
- * underlying hardware state that blocks data transfers.
- * Attempts to halt IN endpoints will fail (returning -EAGAIN) if any
- * transfer requests are still queued, or if the controller hardware
- * (usually a FIFO) still holds bytes that the host hasn't collected.
- */
-static inline int usb_ep_set_halt(struct usb_ep *ep)
-{
- return ep->ops->set_halt(ep, 1);
-}
-
-/**
- * usb_ep_clear_halt - clears endpoint halt, and resets toggle
- * @ep:the bulk or interrupt endpoint being reset
- *
- * Use this when responding to the standard usb "set interface" request,
- * for endpoints that aren't reconfigured, after clearing any other state
- * in the endpoint's i/o queue.
- *
- * Returns zero, or a negative error code. On success, this call clears
- * the underlying hardware state reflecting endpoint halt and data toggle.
- * Note that some hardware can't support this request (like pxa2xx_udc),
- * and accordingly can't correctly implement interface altsettings.
- */
-static inline int usb_ep_clear_halt(struct usb_ep *ep)
-{
- return ep->ops->set_halt(ep, 0);
-}
-
-/**
- * usb_ep_fifo_status - returns number of bytes in fifo, or error
- * @ep: the endpoint whose fifo status is being checked.
- *
- * FIFO endpoints may have "unclaimed data" in them in certain cases,
- * such as after aborted transfers. Hosts may not have collected all
- * the IN data written by the gadget driver (and reported by a request
- * completion). The gadget driver may not have collected all the data
- * written OUT to it by the host. Drivers that need precise handling for
- * fault reporting or recovery may need to use this call.
- *
- * This returns the number of such bytes in the fifo, or a negative
- * errno if the endpoint doesn't use a FIFO or doesn't support such
- * precise handling.
- */
-static inline int usb_ep_fifo_status(struct usb_ep *ep)
-{
- if (ep->ops->fifo_status)
- return ep->ops->fifo_status(ep);
- else
- return -EOPNOTSUPP;
-}
-
-/**
- * usb_ep_fifo_flush - flushes contents of a fifo
- * @ep: the endpoint whose fifo is being flushed.
- *
- * This call may be used to flush the "unclaimed data" that may exist in
- * an endpoint fifo after abnormal transaction terminations. The call
- * must never be used except when endpoint is not being used for any
- * protocol translation.
- */
-static inline void usb_ep_fifo_flush(struct usb_ep *ep)
-{
- if (ep->ops->fifo_flush)
- ep->ops->fifo_flush(ep);
-}
-
-
-/*-------------------------------------------------------------------------*/
-
-struct usb_gadget;
-
-/* the rest of the api to the controller hardware: device operations,
- * which don't involve endpoints (or i/o).
- */
-struct usb_gadget_ops {
- int (*get_frame)(struct usb_gadget *);
- int (*wakeup)(struct usb_gadget *);
- int (*set_selfpowered) (struct usb_gadget *, int is_selfpowered);
- int (*vbus_session) (struct usb_gadget *, int is_active);
- int (*vbus_draw) (struct usb_gadget *, unsigned mA);
- int (*pullup) (struct usb_gadget *, int is_on);
- int (*ioctl)(struct usb_gadget *,
- unsigned code, unsigned long param);
-};
-
-struct device {
- void *driver_data; /* data private to the driver */
- void *device_data; /* data private to the device */
-};
-
-/**
- * struct usb_gadget - represents a usb slave device
- * @ops: Function pointers used to access hardware-specific operations.
- * @ep0: Endpoint zero, used when reading or writing responses to
- * driver setup() requests
- * @ep_list: List of other endpoints supported by the device.
- * @speed: Speed of current connection to USB host.
- * @is_dualspeed: true if the controller supports both high and full speed
- * operation. If it does, the gadget driver must also support both.
- * @is_otg: true if the USB device port uses a Mini-AB jack, so that the
- * gadget driver must provide a USB OTG descriptor.
- * @is_a_peripheral: false unless is_otg, the "A" end of a USB cable
- * is in the Mini-AB jack, and HNP has been used to switch roles
- * so that the "A" device currently acts as A-Peripheral, not A-Host.
- * @a_hnp_support: OTG device feature flag, indicating that the A-Host
- * supports HNP at this port.
- * @a_alt_hnp_support: OTG device feature flag, indicating that the A-Host
- * only supports HNP on a different root port.
- * @b_hnp_enable: OTG device feature flag, indicating that the A-Host
- * enabled HNP support.
- * @name: Identifies the controller hardware type. Used in diagnostics
- * and sometimes configuration.
- * @dev: Driver model state for this abstract device.
- *
- * Gadgets have a mostly-portable "gadget driver" implementing device
- * functions, handling all usb configurations and interfaces. Gadget
- * drivers talk to hardware-specific code indirectly, through ops vectors.
- * That insulates the gadget driver from hardware details, and packages
- * the hardware endpoints through generic i/o queues. The "usb_gadget"
- * and "usb_ep" interfaces provide that insulation from the hardware.
- *
- * Except for the driver data, all fields in this structure are
- * read-only to the gadget driver. That driver data is part of the
- * "driver model" infrastructure in 2.6 (and later) kernels, and for
- * earlier systems is grouped in a similar structure that's not known
- * to the rest of the kernel.
- *
- * Values of the three OTG device feature flags are updated before the
- * setup() call corresponding to USB_REQ_SET_CONFIGURATION, and before
- * driver suspend() calls. They are valid only when is_otg, and when the
- * device is acting as a B-Peripheral (so is_a_peripheral is false).
- */
-struct usb_gadget {
- /* readonly to gadget driver */
- const struct usb_gadget_ops *ops;
- struct usb_ep *ep0;
- struct list_head ep_list; /* of usb_ep */
- enum usb_device_speed speed;
- unsigned is_dualspeed:1;
- unsigned is_otg:1;
- unsigned is_a_peripheral:1;
- unsigned b_hnp_enable:1;
- unsigned a_hnp_support:1;
- unsigned a_alt_hnp_support:1;
- const char *name;
- struct device dev;
-};
-
-static inline void set_gadget_data(struct usb_gadget *gadget, void *data)
-{
- gadget->dev.driver_data = data;
-}
-
-static inline void *get_gadget_data(struct usb_gadget *gadget)
-{
- return gadget->dev.driver_data;
-}
-
-static inline struct usb_gadget *dev_to_usb_gadget(struct device *dev)
-{
- return container_of(dev, struct usb_gadget, dev);
-}
-
-/* iterates the non-control endpoints; 'tmp' is a struct usb_ep pointer */
-#define gadget_for_each_ep(tmp, gadget) \
- list_for_each_entry(tmp, &(gadget)->ep_list, ep_list)
-
-
-/**
- * gadget_is_dualspeed - return true iff the hardware handles high speed
- * @g: controller that might support both high and full speeds
- */
-static inline int gadget_is_dualspeed(struct usb_gadget *g)
-{
-#ifdef CONFIG_USB_GADGET_DUALSPEED
- /* runtime test would check "g->is_dualspeed" ... that might be
- * useful to work around hardware bugs, but is mostly pointless
- */
- return 1;
-#else
- return 0;
-#endif
-}
-
-/**
- * gadget_is_otg - return true iff the hardware is OTG-ready
- * @g: controller that might have a Mini-AB connector
- *
- * This is a runtime test, since kernels with a USB-OTG stack sometimes
- * run on boards which only have a Mini-B (or Mini-A) connector.
- */
-static inline int gadget_is_otg(struct usb_gadget *g)
-{
-#ifdef CONFIG_USB_OTG
- return g->is_otg;
-#else
- return 0;
-#endif
-}
-
-/**
- * usb_gadget_frame_number - returns the current frame number
- * @gadget: controller that reports the frame number
- *
- * Returns the usb frame number, normally eleven bits from a SOF packet,
- * or negative errno if this device doesn't support this capability.
- */
-static inline int usb_gadget_frame_number(struct usb_gadget *gadget)
-{
- return gadget->ops->get_frame(gadget);
-}
-
-/**
- * usb_gadget_wakeup - tries to wake up the host connected to this gadget
- * @gadget: controller used to wake up the host
- *
- * Returns zero on success, else negative error code if the hardware
- * doesn't support such attempts, or its support has not been enabled
- * by the usb host. Drivers must return device descriptors that report
- * their ability to support this, or hosts won't enable it.
- *
- * This may also try to use SRP to wake the host and start enumeration,
- * even if OTG isn't otherwise in use. OTG devices may also start
- * remote wakeup even when hosts don't explicitly enable it.
- */
-static inline int usb_gadget_wakeup(struct usb_gadget *gadget)
-{
- if (!gadget->ops->wakeup)
- return -EOPNOTSUPP;
- return gadget->ops->wakeup(gadget);
-}
-
-/**
- * usb_gadget_set_selfpowered - sets the device selfpowered feature.
- * @gadget:the device being declared as self-powered
- *
- * this affects the device status reported by the hardware driver
- * to reflect that it now has a local power supply.
- *
- * returns zero on success, else negative errno.
- */
-static inline int usb_gadget_set_selfpowered(struct usb_gadget *gadget)
-{
- if (!gadget->ops->set_selfpowered)
- return -EOPNOTSUPP;
- return gadget->ops->set_selfpowered(gadget, 1);
-}
-
-/**
- * usb_gadget_clear_selfpowered - clear the device selfpowered feature.
- * @gadget:the device being declared as bus-powered
- *
- * this affects the device status reported by the hardware driver.
- * some hardware may not support bus-powered operation, in which
- * case this feature's value can never change.
- *
- * returns zero on success, else negative errno.
- */
-static inline int usb_gadget_clear_selfpowered(struct usb_gadget *gadget)
-{
- if (!gadget->ops->set_selfpowered)
- return -EOPNOTSUPP;
- return gadget->ops->set_selfpowered(gadget, 0);
-}
-
-/**
- * usb_gadget_vbus_connect - Notify controller that VBUS is powered
- * @gadget:The device which now has VBUS power.
- *
- * This call is used by a driver for an external transceiver (or GPIO)
- * that detects a VBUS power session starting. Common responses include
- * resuming the controller, activating the D+ (or D-) pullup to let the
- * host detect that a USB device is attached, and starting to draw power
- * (8mA or possibly more, especially after SET_CONFIGURATION).
- *
- * Returns zero on success, else negative errno.
- */
-static inline int usb_gadget_vbus_connect(struct usb_gadget *gadget)
-{
- if (!gadget->ops->vbus_session)
- return -EOPNOTSUPP;
- return gadget->ops->vbus_session(gadget, 1);
-}
-
-/**
- * usb_gadget_vbus_draw - constrain controller's VBUS power usage
- * @gadget:The device whose VBUS usage is being described
- * @mA:How much current to draw, in milliAmperes. This should be twice
- * the value listed in the configuration descriptor bMaxPower field.
- *
- * This call is used by gadget drivers during SET_CONFIGURATION calls,
- * reporting how much power the device may consume. For example, this
- * could affect how quickly batteries are recharged.
- *
- * Returns zero on success, else negative errno.
- */
-static inline int usb_gadget_vbus_draw(struct usb_gadget *gadget, unsigned mA)
-{
- if (!gadget->ops->vbus_draw)
- return -EOPNOTSUPP;
- return gadget->ops->vbus_draw(gadget, mA);
-}
-
-/**
- * usb_gadget_vbus_disconnect - notify controller about VBUS session end
- * @gadget:the device whose VBUS supply is being described
- *
- * This call is used by a driver for an external transceiver (or GPIO)
- * that detects a VBUS power session ending. Common responses include
- * reversing everything done in usb_gadget_vbus_connect().
- *
- * Returns zero on success, else negative errno.
- */
-static inline int usb_gadget_vbus_disconnect(struct usb_gadget *gadget)
-{
- if (!gadget->ops->vbus_session)
- return -EOPNOTSUPP;
- return gadget->ops->vbus_session(gadget, 0);
-}
-
-/**
- * usb_gadget_connect - software-controlled connect to USB host
- * @gadget:the peripheral being connected
- *
- * Enables the D+ (or potentially D-) pullup. The host will start
- * enumerating this gadget when the pullup is active and a VBUS session
- * is active (the link is powered). This pullup is always enabled unless
- * usb_gadget_disconnect() has been used to disable it.
- *
- * Returns zero on success, else negative errno.
- */
-static inline int usb_gadget_connect(struct usb_gadget *gadget)
-{
- if (!gadget->ops->pullup)
- return -EOPNOTSUPP;
- return gadget->ops->pullup(gadget, 1);
-}
-
-/**
- * usb_gadget_disconnect - software-controlled disconnect from USB host
- * @gadget:the peripheral being disconnected
- *
- * Disables the D+ (or potentially D-) pullup, which the host may see
- * as a disconnect (when a VBUS session is active). Not all systems
- * support software pullup controls.
- *
- * This routine may be used during the gadget driver bind() call to prevent
- * the peripheral from ever being visible to the USB host, unless later
- * usb_gadget_connect() is called. For example, user mode components may
- * need to be activated before the system can talk to hosts.
- *
- * Returns zero on success, else negative errno.
- */
-static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
-{
- if (!gadget->ops->pullup)
- return -EOPNOTSUPP;
- return gadget->ops->pullup(gadget, 0);
-}
-
-
-/*-------------------------------------------------------------------------*/
-
-/**
- * struct usb_gadget_driver - driver for usb 'slave' devices
- * @speed: Highest speed the driver handles.
- * @bind: Invoked when the driver is bound to a gadget, usually
- * after registering the driver.
- * At that point, ep0 is fully initialized, and ep_list holds
- * the currently-available endpoints.
- * Called in a context that permits sleeping.
- * @setup: Invoked for ep0 control requests that aren't handled by
- * the hardware level driver. Most calls must be handled by
- * the gadget driver, including descriptor and configuration
- * management. The 16 bit members of the setup data are in
- * USB byte order. Called in_interrupt; this may not sleep. Driver
- * queues a response to ep0, or returns negative to stall.
- * @disconnect: Invoked after all transfers have been stopped,
- * when the host is disconnected. May be called in_interrupt; this
- * may not sleep. Some devices can't detect disconnect, so this might
- * not be called except as part of controller shutdown.
- * @unbind: Invoked when the driver is unbound from a gadget,
- * usually from rmmod (after a disconnect is reported).
- * Called in a context that permits sleeping.
- * @suspend: Invoked on USB suspend. May be called in_interrupt.
- * @resume: Invoked on USB resume. May be called in_interrupt.
- *
- * Devices are disabled till a gadget driver successfully bind()s, which
- * means the driver will handle setup() requests needed to enumerate (and
- * meet "chapter 9" requirements) then do some useful work.
- *
- * If gadget->is_otg is true, the gadget driver must provide an OTG
- * descriptor during enumeration, or else fail the bind() call. In such
- * cases, no USB traffic may flow until both bind() returns without
- * having called usb_gadget_disconnect(), and the USB host stack has
- * initialized.
- *
- * Drivers use hardware-specific knowledge to configure the usb hardware.
- * endpoint addressing is only one of several hardware characteristics that
- * are in descriptors the ep0 implementation returns from setup() calls.
- *
- * Except for ep0 implementation, most driver code shouldn't need change to
- * run on top of different usb controllers. It'll use endpoints set up by
- * that ep0 implementation.
- *
- * The usb controller driver handles a few standard usb requests. Those
- * include set_address, and feature flags for devices, interfaces, and
- * endpoints (the get_status, set_feature, and clear_feature requests).
- *
- * Accordingly, the driver's setup() callback must always implement all
- * get_descriptor requests, returning at least a device descriptor and
- * a configuration descriptor. Drivers must make sure the endpoint
- * descriptors match any hardware constraints. Some hardware also constrains
- * other descriptors. (The pxa250 allows only configurations 1, 2, or 3).
- *
- * The driver's setup() callback must also implement set_configuration,
- * and should also implement set_interface, get_configuration, and
- * get_interface. Setting a configuration (or interface) is where
- * endpoints should be activated or (config 0) shut down.
- *
- * (Note that only the default control endpoint is supported. Neither
- * hosts nor devices generally support control traffic except to ep0.)
- *
- * Most devices will ignore USB suspend/resume operations, and so will
- * not provide those callbacks. However, some may need to change modes
- * when the host is not longer directing those activities. For example,
- * local controls (buttons, dials, etc) may need to be re-enabled since
- * the (remote) host can't do that any longer; or an error state might
- * be cleared, to make the device behave identically whether or not
- * power is maintained.
- */
-struct usb_gadget_driver {
- enum usb_device_speed speed;
- int (*bind)(struct usb_gadget *);
- void (*unbind)(struct usb_gadget *);
- int (*setup)(struct usb_gadget *,
- const struct usb_ctrlrequest *);
- void (*disconnect)(struct usb_gadget *);
- void (*suspend)(struct usb_gadget *);
- void (*resume)(struct usb_gadget *);
-};
-
-
-/*-------------------------------------------------------------------------*/
-
-/* driver modules register and unregister, as usual.
- * these calls must be made in a context that can sleep.
- *
- * these will usually be implemented directly by the hardware-dependent
- * usb bus interface driver, which will only support a single driver.
- */
-
-/**
- * usb_gadget_register_driver - register a gadget driver
- * @driver:the driver being registered
- *
- * Call this in your gadget driver's module initialization function,
- * to tell the underlying usb controller driver about your driver.
- * The driver's bind() function will be called to bind it to a
- * gadget before this registration call returns. It's expected that
- * the bind() functions will be in init sections.
- * This function must be called in a context that can sleep.
- */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver);
-
-/**
- * usb_gadget_unregister_driver - unregister a gadget driver
- * @driver:the driver being unregistered
- *
- * Call this in your gadget driver's module cleanup function,
- * to tell the underlying usb controller that your driver is
- * going away. If the controller is connected to a USB host,
- * it will first disconnect(). The driver is also requested
- * to unbind() and clean up any device state, before this procedure
- * finally returns. It's expected that the unbind() functions
- * will in in exit sections, so may not be linked in some kernels.
- * This function must be called in a context that can sleep.
- */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver);
-
-/*-------------------------------------------------------------------------*/
-
-/* utility to simplify dealing with string descriptors */
-
-/**
- * struct usb_string - wraps a C string and its USB id
- * @id:the (nonzero) ID for this string
- * @s:the string, in UTF-8 encoding
- *
- * If you're using usb_gadget_get_string(), use this to wrap a string
- * together with its ID.
- */
-struct usb_string {
- u8 id;
- const char *s;
-};
-
-/**
- * struct usb_gadget_strings - a set of USB strings in a given language
- * @language:identifies the strings' language (0x0409 for en-us)
- * @strings:array of strings with their ids
- *
- * If you're using usb_gadget_get_string(), use this to wrap all the
- * strings for a given language.
- */
-struct usb_gadget_strings {
- u16 language; /* 0x0409 for en-us */
- struct usb_string *strings;
-};
-
-/* put descriptor for string with that id into buf (buflen >= 256) */
-int usb_gadget_get_string(struct usb_gadget_strings *table, int id, u8 *buf);
-
-/*-------------------------------------------------------------------------*/
-
-/* utility to simplify managing config descriptors */
-
-/* write vector of descriptors into buffer */
-int usb_descriptor_fillbuf(void *, unsigned,
- const struct usb_descriptor_header **);
-
-/* build config descriptor from single descriptor vector */
-int usb_gadget_config_buf(const struct usb_config_descriptor *config,
- void *buf, unsigned buflen, const struct usb_descriptor_header **desc);
-
-/*-------------------------------------------------------------------------*/
-
-/* utility wrapping a simple endpoint selection policy */
-
-extern struct usb_ep *usb_ep_autoconfig(struct usb_gadget *,
- struct usb_endpoint_descriptor *);
-
-extern void usb_ep_autoconfig_reset(struct usb_gadget *);
-
-extern int usb_gadget_handle_interrupts(void);
-
-#endif /* __LINUX_USB_GADGET_H */
diff --git a/include/linux/usb/xhci-omap.h b/include/linux/usb/xhci-omap.h
deleted file mode 100644
index 82630ad..0000000
--- a/include/linux/usb/xhci-omap.h
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
- * (C) Copyright 2013
- * Texas Instruments Inc, <www.ti.com>
- *
- * Author: Dan Murphy <dmurphy@ti.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#ifndef _ASM_ARCH_XHCI_OMAP_H_
-#define _ASM_ARCH_XHCI_OMAP_H_
-
-#ifdef CONFIG_DRA7XX
-#define OMAP_XHCI_BASE 0x488d0000
-#define OMAP_OCP1_SCP_BASE 0x4A081000
-#define OMAP_OTG_WRAPPER_BASE 0x488c0000
-#elif defined CONFIG_AM43XX
-#define OMAP_XHCI_BASE 0x483d0000
-#define OMAP_OCP1_SCP_BASE 0x483E8000
-#define OMAP_OTG_WRAPPER_BASE 0x483dc100
-#else
-/* Default to the OMAP5 XHCI defines */
-#define OMAP_XHCI_BASE 0x4a030000
-#define OMAP_OCP1_SCP_BASE 0x4a084c00
-#define OMAP_OTG_WRAPPER_BASE 0x4A020000
-#endif
-
-/* Phy register MACRO definitions */
-#define PLL_REGM_MASK 0x001FFE00
-#define PLL_REGM_SHIFT 0x9
-#define PLL_REGM_F_MASK 0x0003FFFF
-#define PLL_REGM_F_SHIFT 0x0
-#define PLL_REGN_MASK 0x000001FE
-#define PLL_REGN_SHIFT 0x1
-#define PLL_SELFREQDCO_MASK 0x0000000E
-#define PLL_SELFREQDCO_SHIFT 0x1
-#define PLL_SD_MASK 0x0003FC00
-#define PLL_SD_SHIFT 0x9
-#define SET_PLL_GO 0x1
-#define PLL_TICOPWDN 0x10000
-#define PLL_LOCK 0x2
-#define PLL_IDLE 0x1
-
-#define USB3_PWRCTL_CLK_CMD_MASK 0x3FE000
-#define USB3_PWRCTL_CLK_FREQ_MASK 0xFFC
-#define USB3_PHY_PARTIAL_RX_POWERON (1 << 6)
-#define USB3_PHY_RX_POWERON (1 << 14)
-#define USB3_PHY_TX_POWERON (1 << 15)
-#define USB3_PHY_TX_RX_POWERON (USB3_PHY_RX_POWERON | USB3_PHY_TX_POWERON)
-#define USB3_PWRCTL_CLK_CMD_SHIFT 14
-#define USB3_PWRCTL_CLK_FREQ_SHIFT 22
-
-/* USBOTGSS_WRAPPER definitions */
-#define USBOTGSS_WRAPRESET (1 << 17)
-#define USBOTGSS_DMADISABLE (1 << 16)
-#define USBOTGSS_STANDBYMODE_NO_STANDBY (1 << 4)
-#define USBOTGSS_STANDBYMODE_SMRT (1 << 5)
-#define USBOTGSS_STANDBYMODE_SMRT_WKUP (0x3 << 4)
-#define USBOTGSS_IDLEMODE_NOIDLE (1 << 2)
-#define USBOTGSS_IDLEMODE_SMRT (1 << 3)
-#define USBOTGSS_IDLEMODE_SMRT_WKUP (0x3 << 2)
-
-/* USBOTGSS_IRQENABLE_SET_0 bit */
-#define USBOTGSS_COREIRQ_EN (1 << 0)
-
-/* USBOTGSS_IRQENABLE_SET_1 bits */
-#define USBOTGSS_IRQ_SET_1_IDPULLUP_FALL_EN (1 << 0)
-#define USBOTGSS_IRQ_SET_1_DISCHRGVBUS_FALL_EN (1 << 3)
-#define USBOTGSS_IRQ_SET_1_CHRGVBUS_FALL_EN (1 << 4)
-#define USBOTGSS_IRQ_SET_1_DRVVBUS_FALL_EN (1 << 5)
-#define USBOTGSS_IRQ_SET_1_IDPULLUP_RISE_EN (1 << 8)
-#define USBOTGSS_IRQ_SET_1_DISCHRGVBUS_RISE_EN (1 << 11)
-#define USBOTGSS_IRQ_SET_1_CHRGVBUS_RISE_EN (1 << 12)
-#define USBOTGSS_IRQ_SET_1_DRVVBUS_RISE_EN (1 << 13)
-#define USBOTGSS_IRQ_SET_1_OEVT_EN (1 << 16)
-#define USBOTGSS_IRQ_SET_1_DMADISABLECLR_EN (1 << 17)
-
-/*
- * USBOTGSS_WRAPPER registers
- */
-struct omap_dwc_wrapper {
- u32 revision;
-
- u32 reserve_1[3];
-
- u32 sysconfig; /* offset of 0x10 */
-
- u32 reserve_2[3];
- u16 reserve_3;
-
- u32 irqstatus_raw_0; /* offset of 0x24 */
- u32 irqstatus_0;
- u32 irqenable_set_0;
- u32 irqenable_clr_0;
-
- u32 irqstatus_raw_1; /* offset of 0x34 */
- u32 irqstatus_1;
- u32 irqenable_set_1;
- u32 irqenable_clr_1;
-
- u32 reserve_4[15];
-
- u32 utmi_otg_ctrl; /* offset of 0x80 */
- u32 utmi_otg_status;
-
- u32 reserve_5[30];
-
- u32 mram_offset; /* offset of 0x100 */
- u32 fladj;
- u32 dbg_config;
- u32 dbg_data;
- u32 dev_ebc_en;
-};
-
-/* XHCI PHY register structure */
-struct omap_usb3_phy {
- u32 reserve1;
- u32 pll_status;
- u32 pll_go;
- u32 pll_config_1;
- u32 pll_config_2;
- u32 pll_config_3;
- u32 pll_ssc_config_1;
- u32 pll_ssc_config_2;
- u32 pll_config_4;
-};
-
-struct omap_xhci {
- struct omap_dwc_wrapper *otg_wrapper;
- struct omap_usb3_phy *usb3_phy;
- struct xhci_hccr *hcd;
- struct dwc3 *dwc3_reg;
-};
-
-/* USB PHY functions */
-void omap_enable_phy(struct omap_xhci *omap);
-void omap_reset_usb_phy(struct dwc3 *dwc3_reg);
-void usb_phy_power(int on);
-
-#endif /* _ASM_ARCH_XHCI_OMAP_H_ */
--
1.7.10.4
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^ permalink raw reply [flat|nested] 20+ messages in thread* [PATCH 07/18] musb: drop gadget support - remove appropriate files
2014-06-13 7:54 [RFC][PATCH 00/18] am33x: add musb Christoph Fritz
` (4 preceding siblings ...)
2014-06-13 7:54 ` [PATCH 06/18] musb: move musb.h to path include/usb Christoph Fritz
@ 2014-06-13 7:54 ` Christoph Fritz
2014-06-13 7:54 ` [PATCH 08/18] musb: use __BAREBOX__ macro Christoph Fritz
` (10 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: Christoph Fritz @ 2014-06-13 7:54 UTC (permalink / raw)
To: barebox
---
drivers/usb/musb/Makefile | 6 +-
drivers/usb/musb/am35x.c | 709 -----------
drivers/usb/musb/musb_gadget.c | 2333 ------------------------------------
drivers/usb/musb/musb_gadget.h | 130 --
drivers/usb/musb/musb_gadget_ep0.c | 1089 -----------------
drivers/usb/musb/musb_uboot.c | 239 ----
drivers/usb/musb/omap2430.c | 626 ----------
drivers/usb/musb/omap2430.h | 56 -
8 files changed, 1 insertion(+), 5187 deletions(-)
delete mode 100644 drivers/usb/musb/am35x.c
delete mode 100644 drivers/usb/musb/musb_gadget.c
delete mode 100644 drivers/usb/musb/musb_gadget.h
delete mode 100644 drivers/usb/musb/musb_gadget_ep0.c
delete mode 100644 drivers/usb/musb/musb_uboot.c
delete mode 100644 drivers/usb/musb/omap2430.c
delete mode 100644 drivers/usb/musb/omap2430.h
diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile
index ba72348..64ebe06 100644
--- a/drivers/usb/musb/Makefile
+++ b/drivers/usb/musb/Makefile
@@ -2,12 +2,8 @@
# for USB OTG silicon based on Mentor Graphics INVENTRA designs
#
-obj-$(CONFIG_MUSB_GADGET) += musb_gadget.o musb_gadget_ep0.o musb_core.o
-obj-$(CONFIG_MUSB_GADGET) += musb_uboot.o
-obj-$(CONFIG_MUSB_HOST) += musb_host.o musb_core.o musb_uboot.o
+obj-$(CONFIG_USB_MUSB_HOST) += musb_host.o musb_core.o
obj-$(CONFIG_USB_MUSB_DSPS) += musb_dsps.o
-obj-$(CONFIG_USB_MUSB_AM35X) += am35x.o
-obj-$(CONFIG_USB_MUSB_OMAP2PLUS) += omap2430.o
CFLAGS_NO_WARN := $(call cc-option,-Wno-unused-variable) \
$(call cc-option,-Wno-unused-but-set-variable) \
diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c
deleted file mode 100644
index 57c9bd3..0000000
--- a/drivers/usb/musb/am35x.c
+++ /dev/null
@@ -1,709 +0,0 @@
-/*
- * Texas Instruments AM35x "glue layer"
- *
- * Copyright (c) 2010, by Texas Instruments
- *
- * Based on the DA8xx "glue layer" code.
- * Copyright (c) 2008-2009, MontaVista Software, Inc. <source@mvista.com>
- *
- * This file is part of the Inventra Controller Driver for Linux.
- *
- * The Inventra Controller Driver for Linux is free software; you
- * can redistribute it and/or modify it under the terms of the GNU
- * General Public License version 2 as published by the Free Software
- * Foundation.
- *
- * The Inventra Controller Driver for Linux is distributed in
- * the hope that it will be useful, but WITHOUT ANY WARRANTY;
- * without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with The Inventra Controller Driver for Linux ; if not,
- * write to the Free Software Foundation, Inc., 59 Temple Place,
- * Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#define __UBOOT__
-#ifndef __UBOOT__
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-
-#include <plat/usb.h>
-#else
-#include <common.h>
-#include <asm/omap_musb.h>
-#include "linux-compat.h"
-#endif
-
-#include "musb_core.h"
-
-/*
- * AM35x specific definitions
- */
-/* USB 2.0 OTG module registers */
-#define USB_REVISION_REG 0x00
-#define USB_CTRL_REG 0x04
-#define USB_STAT_REG 0x08
-#define USB_EMULATION_REG 0x0c
-/* 0x10 Reserved */
-#define USB_AUTOREQ_REG 0x14
-#define USB_SRP_FIX_TIME_REG 0x18
-#define USB_TEARDOWN_REG 0x1c
-#define EP_INTR_SRC_REG 0x20
-#define EP_INTR_SRC_SET_REG 0x24
-#define EP_INTR_SRC_CLEAR_REG 0x28
-#define EP_INTR_MASK_REG 0x2c
-#define EP_INTR_MASK_SET_REG 0x30
-#define EP_INTR_MASK_CLEAR_REG 0x34
-#define EP_INTR_SRC_MASKED_REG 0x38
-#define CORE_INTR_SRC_REG 0x40
-#define CORE_INTR_SRC_SET_REG 0x44
-#define CORE_INTR_SRC_CLEAR_REG 0x48
-#define CORE_INTR_MASK_REG 0x4c
-#define CORE_INTR_MASK_SET_REG 0x50
-#define CORE_INTR_MASK_CLEAR_REG 0x54
-#define CORE_INTR_SRC_MASKED_REG 0x58
-/* 0x5c Reserved */
-#define USB_END_OF_INTR_REG 0x60
-
-/* Control register bits */
-#define AM35X_SOFT_RESET_MASK 1
-
-/* USB interrupt register bits */
-#define AM35X_INTR_USB_SHIFT 16
-#define AM35X_INTR_USB_MASK (0x1ff << AM35X_INTR_USB_SHIFT)
-#define AM35X_INTR_DRVVBUS 0x100
-#define AM35X_INTR_RX_SHIFT 16
-#define AM35X_INTR_TX_SHIFT 0
-#define AM35X_TX_EP_MASK 0xffff /* EP0 + 15 Tx EPs */
-#define AM35X_RX_EP_MASK 0xfffe /* 15 Rx EPs */
-#define AM35X_TX_INTR_MASK (AM35X_TX_EP_MASK << AM35X_INTR_TX_SHIFT)
-#define AM35X_RX_INTR_MASK (AM35X_RX_EP_MASK << AM35X_INTR_RX_SHIFT)
-
-#define USB_MENTOR_CORE_OFFSET 0x400
-
-struct am35x_glue {
- struct device *dev;
- struct platform_device *musb;
- struct clk *phy_clk;
- struct clk *clk;
-};
-#define glue_to_musb(g) platform_get_drvdata(g->musb)
-
-/*
- * am35x_musb_enable - enable interrupts
- */
-static void am35x_musb_enable(struct musb *musb)
-{
- void __iomem *reg_base = musb->ctrl_base;
- u32 epmask;
-
- /* Workaround: setup IRQs through both register sets. */
- epmask = ((musb->epmask & AM35X_TX_EP_MASK) << AM35X_INTR_TX_SHIFT) |
- ((musb->epmask & AM35X_RX_EP_MASK) << AM35X_INTR_RX_SHIFT);
-
- musb_writel(reg_base, EP_INTR_MASK_SET_REG, epmask);
- musb_writel(reg_base, CORE_INTR_MASK_SET_REG, AM35X_INTR_USB_MASK);
-
- /* Force the DRVVBUS IRQ so we can start polling for ID change. */
- if (is_otg_enabled(musb))
- musb_writel(reg_base, CORE_INTR_SRC_SET_REG,
- AM35X_INTR_DRVVBUS << AM35X_INTR_USB_SHIFT);
-}
-
-/*
- * am35x_musb_disable - disable HDRC and flush interrupts
- */
-static void am35x_musb_disable(struct musb *musb)
-{
- void __iomem *reg_base = musb->ctrl_base;
-
- musb_writel(reg_base, CORE_INTR_MASK_CLEAR_REG, AM35X_INTR_USB_MASK);
- musb_writel(reg_base, EP_INTR_MASK_CLEAR_REG,
- AM35X_TX_INTR_MASK | AM35X_RX_INTR_MASK);
- musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
- musb_writel(reg_base, USB_END_OF_INTR_REG, 0);
-}
-
-#ifndef __UBOOT__
-#define portstate(stmt) stmt
-
-static void am35x_musb_set_vbus(struct musb *musb, int is_on)
-{
- WARN_ON(is_on && is_peripheral_active(musb));
-}
-
-#define POLL_SECONDS 2
-
-static struct timer_list otg_workaround;
-
-static void otg_timer(unsigned long _musb)
-{
- struct musb *musb = (void *)_musb;
- void __iomem *mregs = musb->mregs;
- u8 devctl;
- unsigned long flags;
-
- /*
- * We poll because AM35x's won't expose several OTG-critical
- * status change events (from the transceiver) otherwise.
- */
- devctl = musb_readb(mregs, MUSB_DEVCTL);
- dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl,
- otg_state_string(musb->xceiv->state));
-
- spin_lock_irqsave(&musb->lock, flags);
- switch (musb->xceiv->state) {
- case OTG_STATE_A_WAIT_BCON:
- devctl &= ~MUSB_DEVCTL_SESSION;
- musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
-
- devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
- if (devctl & MUSB_DEVCTL_BDEVICE) {
- musb->xceiv->state = OTG_STATE_B_IDLE;
- MUSB_DEV_MODE(musb);
- } else {
- musb->xceiv->state = OTG_STATE_A_IDLE;
- MUSB_HST_MODE(musb);
- }
- break;
- case OTG_STATE_A_WAIT_VFALL:
- musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
- musb_writel(musb->ctrl_base, CORE_INTR_SRC_SET_REG,
- MUSB_INTR_VBUSERROR << AM35X_INTR_USB_SHIFT);
- break;
- case OTG_STATE_B_IDLE:
- if (!is_peripheral_enabled(musb))
- break;
-
- devctl = musb_readb(mregs, MUSB_DEVCTL);
- if (devctl & MUSB_DEVCTL_BDEVICE)
- mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ);
- else
- musb->xceiv->state = OTG_STATE_A_IDLE;
- break;
- default:
- break;
- }
- spin_unlock_irqrestore(&musb->lock, flags);
-}
-
-static void am35x_musb_try_idle(struct musb *musb, unsigned long timeout)
-{
- static unsigned long last_timer;
-
- if (!is_otg_enabled(musb))
- return;
-
- if (timeout == 0)
- timeout = jiffies + msecs_to_jiffies(3);
-
- /* Never idle if active, or when VBUS timeout is not set as host */
- if (musb->is_active || (musb->a_wait_bcon == 0 &&
- musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) {
- dev_dbg(musb->controller, "%s active, deleting timer\n",
- otg_state_string(musb->xceiv->state));
- del_timer(&otg_workaround);
- last_timer = jiffies;
- return;
- }
-
- if (time_after(last_timer, timeout) && timer_pending(&otg_workaround)) {
- dev_dbg(musb->controller, "Longer idle timer already pending, ignoring...\n");
- return;
- }
- last_timer = timeout;
-
- dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n",
- otg_state_string(musb->xceiv->state),
- jiffies_to_msecs(timeout - jiffies));
- mod_timer(&otg_workaround, timeout);
-}
-#endif
-
-static irqreturn_t am35x_musb_interrupt(int irq, void *hci)
-{
- struct musb *musb = hci;
- void __iomem *reg_base = musb->ctrl_base;
-#ifndef __UBOOT__
- struct device *dev = musb->controller;
- struct musb_hdrc_platform_data *plat = dev->platform_data;
- struct omap_musb_board_data *data = plat->board_data;
- struct usb_otg *otg = musb->xceiv->otg;
-#else
- struct omap_musb_board_data *data =
- (struct omap_musb_board_data *)musb->controller;
-#endif
- unsigned long flags;
- irqreturn_t ret = IRQ_NONE;
- u32 epintr, usbintr;
-
-#ifdef __UBOOT__
- /*
- * It seems that on AM35X interrupt registers can be updated
- * before core registers. This confuses the code.
- * As a workaround add a small delay here.
- */
- udelay(10);
-#endif
- spin_lock_irqsave(&musb->lock, flags);
-
- /* Get endpoint interrupts */
- epintr = musb_readl(reg_base, EP_INTR_SRC_MASKED_REG);
-
- if (epintr) {
- musb_writel(reg_base, EP_INTR_SRC_CLEAR_REG, epintr);
-
- musb->int_rx =
- (epintr & AM35X_RX_INTR_MASK) >> AM35X_INTR_RX_SHIFT;
- musb->int_tx =
- (epintr & AM35X_TX_INTR_MASK) >> AM35X_INTR_TX_SHIFT;
- }
-
- /* Get usb core interrupts */
- usbintr = musb_readl(reg_base, CORE_INTR_SRC_MASKED_REG);
- if (!usbintr && !epintr)
- goto eoi;
-
- if (usbintr) {
- musb_writel(reg_base, CORE_INTR_SRC_CLEAR_REG, usbintr);
-
- musb->int_usb =
- (usbintr & AM35X_INTR_USB_MASK) >> AM35X_INTR_USB_SHIFT;
- }
-#ifndef __UBOOT__
- /*
- * DRVVBUS IRQs are the only proxy we have (a very poor one!) for
- * AM35x's missing ID change IRQ. We need an ID change IRQ to
- * switch appropriately between halves of the OTG state machine.
- * Managing DEVCTL.SESSION per Mentor docs requires that we know its
- * value but DEVCTL.BDEVICE is invalid without DEVCTL.SESSION set.
- * Also, DRVVBUS pulses for SRP (but not at 5V) ...
- */
- if (usbintr & (AM35X_INTR_DRVVBUS << AM35X_INTR_USB_SHIFT)) {
- int drvvbus = musb_readl(reg_base, USB_STAT_REG);
- void __iomem *mregs = musb->mregs;
- u8 devctl = musb_readb(mregs, MUSB_DEVCTL);
- int err;
-
- err = is_host_enabled(musb) && (musb->int_usb &
- MUSB_INTR_VBUSERROR);
- if (err) {
- /*
- * The Mentor core doesn't debounce VBUS as needed
- * to cope with device connect current spikes. This
- * means it's not uncommon for bus-powered devices
- * to get VBUS errors during enumeration.
- *
- * This is a workaround, but newer RTL from Mentor
- * seems to allow a better one: "re"-starting sessions
- * without waiting for VBUS to stop registering in
- * devctl.
- */
- musb->int_usb &= ~MUSB_INTR_VBUSERROR;
- musb->xceiv->state = OTG_STATE_A_WAIT_VFALL;
- mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ);
- WARNING("VBUS error workaround (delay coming)\n");
- } else if (is_host_enabled(musb) && drvvbus) {
- MUSB_HST_MODE(musb);
- otg->default_a = 1;
- musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
- portstate(musb->port1_status |= USB_PORT_STAT_POWER);
- del_timer(&otg_workaround);
- } else {
- musb->is_active = 0;
- MUSB_DEV_MODE(musb);
- otg->default_a = 0;
- musb->xceiv->state = OTG_STATE_B_IDLE;
- portstate(musb->port1_status &= ~USB_PORT_STAT_POWER);
- }
-
- /* NOTE: this must complete power-on within 100 ms. */
- dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n",
- drvvbus ? "on" : "off",
- otg_state_string(musb->xceiv->state),
- err ? " ERROR" : "",
- devctl);
- ret = IRQ_HANDLED;
- }
-#endif
-
- if (musb->int_tx || musb->int_rx || musb->int_usb)
- ret |= musb_interrupt(musb);
-
-eoi:
- /* EOI needs to be written for the IRQ to be re-asserted. */
- if (ret == IRQ_HANDLED || epintr || usbintr) {
- /* clear level interrupt */
- if (data->clear_irq)
- data->clear_irq();
- /* write EOI */
- musb_writel(reg_base, USB_END_OF_INTR_REG, 0);
- }
-
-#ifndef __UBOOT__
- /* Poll for ID change */
- if (is_otg_enabled(musb) && musb->xceiv->state == OTG_STATE_B_IDLE)
- mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ);
-#endif
-
- spin_unlock_irqrestore(&musb->lock, flags);
-
- return ret;
-}
-
-#ifndef __UBOOT__
-static int am35x_musb_set_mode(struct musb *musb, u8 musb_mode)
-{
- struct device *dev = musb->controller;
- struct musb_hdrc_platform_data *plat = dev->platform_data;
- struct omap_musb_board_data *data = plat->board_data;
- int retval = 0;
-
- if (data->set_mode)
- data->set_mode(musb_mode);
- else
- retval = -EIO;
-
- return retval;
-}
-#endif
-
-static int am35x_musb_init(struct musb *musb)
-{
-#ifndef __UBOOT__
- struct device *dev = musb->controller;
- struct musb_hdrc_platform_data *plat = dev->platform_data;
- struct omap_musb_board_data *data = plat->board_data;
-#else
- struct omap_musb_board_data *data =
- (struct omap_musb_board_data *)musb->controller;
-#endif
- void __iomem *reg_base = musb->ctrl_base;
- u32 rev;
-
- musb->mregs += USB_MENTOR_CORE_OFFSET;
-
- /* Returns zero if e.g. not clocked */
- rev = musb_readl(reg_base, USB_REVISION_REG);
- if (!rev)
- return -ENODEV;
-
-#ifndef __UBOOT__
- usb_nop_xceiv_register();
- musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
- if (IS_ERR_OR_NULL(musb->xceiv))
- return -ENODEV;
-
- if (is_host_enabled(musb))
- setup_timer(&otg_workaround, otg_timer, (unsigned long) musb);
-#endif
-
- /* Reset the musb */
- if (data->reset)
- data->reset();
-
- /* Reset the controller */
- musb_writel(reg_base, USB_CTRL_REG, AM35X_SOFT_RESET_MASK);
-
- /* Start the on-chip PHY and its PLL. */
- if (data->set_phy_power)
- data->set_phy_power(1);
-
- msleep(5);
-
- musb->isr = am35x_musb_interrupt;
-
- /* clear level interrupt */
- if (data->clear_irq)
- data->clear_irq();
-
- return 0;
-}
-
-static int am35x_musb_exit(struct musb *musb)
-{
-#ifndef __UBOOT__
- struct device *dev = musb->controller;
- struct musb_hdrc_platform_data *plat = dev->platform_data;
- struct omap_musb_board_data *data = plat->board_data;
-#else
- struct omap_musb_board_data *data =
- (struct omap_musb_board_data *)musb->controller;
-#endif
-
-#ifndef __UBOOT__
- if (is_host_enabled(musb))
- del_timer_sync(&otg_workaround);
-#endif
-
- /* Shutdown the on-chip PHY and its PLL. */
- if (data->set_phy_power)
- data->set_phy_power(0);
-
-#ifndef __UBOOT__
- usb_put_phy(musb->xceiv);
- usb_nop_xceiv_unregister();
-#endif
-
- return 0;
-}
-
-/* AM35x supports only 32bit read operation */
-void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
-{
- void __iomem *fifo = hw_ep->fifo;
- u32 val;
- int i;
-
- /* Read for 32bit-aligned destination address */
- if (likely((0x03 & (unsigned long) dst) == 0) && len >= 4) {
- readsl(fifo, dst, len >> 2);
- dst += len & ~0x03;
- len &= 0x03;
- }
- /*
- * Now read the remaining 1 to 3 byte or complete length if
- * unaligned address.
- */
- if (len > 4) {
- for (i = 0; i < (len >> 2); i++) {
- *(u32 *) dst = musb_readl(fifo, 0);
- dst += 4;
- }
- len &= 0x03;
- }
- if (len > 0) {
- val = musb_readl(fifo, 0);
- memcpy(dst, &val, len);
- }
-}
-
-#ifndef __UBOOT__
-static const struct musb_platform_ops am35x_ops = {
-#else
-const struct musb_platform_ops am35x_ops = {
-#endif
- .init = am35x_musb_init,
- .exit = am35x_musb_exit,
-
- .enable = am35x_musb_enable,
- .disable = am35x_musb_disable,
-
-#ifndef __UBOOT__
- .set_mode = am35x_musb_set_mode,
- .try_idle = am35x_musb_try_idle,
-
- .set_vbus = am35x_musb_set_vbus,
-#endif
-};
-
-#ifndef __UBOOT__
-static u64 am35x_dmamask = DMA_BIT_MASK(32);
-
-static int __devinit am35x_probe(struct platform_device *pdev)
-{
- struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
- struct platform_device *musb;
- struct am35x_glue *glue;
-
- struct clk *phy_clk;
- struct clk *clk;
-
- int ret = -ENOMEM;
-
- glue = kzalloc(sizeof(*glue), GFP_KERNEL);
- if (!glue) {
- dev_err(&pdev->dev, "failed to allocate glue context\n");
- goto err0;
- }
-
- musb = platform_device_alloc("musb-hdrc", -1);
- if (!musb) {
- dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err1;
- }
-
- phy_clk = clk_get(&pdev->dev, "fck");
- if (IS_ERR(phy_clk)) {
- dev_err(&pdev->dev, "failed to get PHY clock\n");
- ret = PTR_ERR(phy_clk);
- goto err2;
- }
-
- clk = clk_get(&pdev->dev, "ick");
- if (IS_ERR(clk)) {
- dev_err(&pdev->dev, "failed to get clock\n");
- ret = PTR_ERR(clk);
- goto err3;
- }
-
- ret = clk_enable(phy_clk);
- if (ret) {
- dev_err(&pdev->dev, "failed to enable PHY clock\n");
- goto err4;
- }
-
- ret = clk_enable(clk);
- if (ret) {
- dev_err(&pdev->dev, "failed to enable clock\n");
- goto err5;
- }
-
- musb->dev.parent = &pdev->dev;
- musb->dev.dma_mask = &am35x_dmamask;
- musb->dev.coherent_dma_mask = am35x_dmamask;
-
- glue->dev = &pdev->dev;
- glue->musb = musb;
- glue->phy_clk = phy_clk;
- glue->clk = clk;
-
- pdata->platform_ops = &am35x_ops;
-
- platform_set_drvdata(pdev, glue);
-
- ret = platform_device_add_resources(musb, pdev->resource,
- pdev->num_resources);
- if (ret) {
- dev_err(&pdev->dev, "failed to add resources\n");
- goto err6;
- }
-
- ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
- if (ret) {
- dev_err(&pdev->dev, "failed to add platform_data\n");
- goto err6;
- }
-
- ret = platform_device_add(musb);
- if (ret) {
- dev_err(&pdev->dev, "failed to register musb device\n");
- goto err6;
- }
-
- return 0;
-
-err6:
- clk_disable(clk);
-
-err5:
- clk_disable(phy_clk);
-
-err4:
- clk_put(clk);
-
-err3:
- clk_put(phy_clk);
-
-err2:
- platform_device_put(musb);
-
-err1:
- kfree(glue);
-
-err0:
- return ret;
-}
-
-static int __devexit am35x_remove(struct platform_device *pdev)
-{
- struct am35x_glue *glue = platform_get_drvdata(pdev);
-
- platform_device_del(glue->musb);
- platform_device_put(glue->musb);
- clk_disable(glue->clk);
- clk_disable(glue->phy_clk);
- clk_put(glue->clk);
- clk_put(glue->phy_clk);
- kfree(glue);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int am35x_suspend(struct device *dev)
-{
- struct am35x_glue *glue = dev_get_drvdata(dev);
- struct musb_hdrc_platform_data *plat = dev->platform_data;
- struct omap_musb_board_data *data = plat->board_data;
-
- /* Shutdown the on-chip PHY and its PLL. */
- if (data->set_phy_power)
- data->set_phy_power(0);
-
- clk_disable(glue->phy_clk);
- clk_disable(glue->clk);
-
- return 0;
-}
-
-static int am35x_resume(struct device *dev)
-{
- struct am35x_glue *glue = dev_get_drvdata(dev);
- struct musb_hdrc_platform_data *plat = dev->platform_data;
- struct omap_musb_board_data *data = plat->board_data;
- int ret;
-
- /* Start the on-chip PHY and its PLL. */
- if (data->set_phy_power)
- data->set_phy_power(1);
-
- ret = clk_enable(glue->phy_clk);
- if (ret) {
- dev_err(dev, "failed to enable PHY clock\n");
- return ret;
- }
-
- ret = clk_enable(glue->clk);
- if (ret) {
- dev_err(dev, "failed to enable clock\n");
- return ret;
- }
-
- return 0;
-}
-
-static struct dev_pm_ops am35x_pm_ops = {
- .suspend = am35x_suspend,
- .resume = am35x_resume,
-};
-
-#define DEV_PM_OPS &am35x_pm_ops
-#else
-#define DEV_PM_OPS NULL
-#endif
-
-static struct platform_driver am35x_driver = {
- .probe = am35x_probe,
- .remove = __devexit_p(am35x_remove),
- .driver = {
- .name = "musb-am35x",
- .pm = DEV_PM_OPS,
- },
-};
-
-MODULE_DESCRIPTION("AM35x MUSB Glue Layer");
-MODULE_AUTHOR("Ajay Kumar Gupta <ajay.gupta@ti.com>");
-MODULE_LICENSE("GPL v2");
-
-static int __init am35x_init(void)
-{
- return platform_driver_register(&am35x_driver);
-}
-module_init(am35x_init);
-
-static void __exit am35x_exit(void)
-{
- platform_driver_unregister(&am35x_driver);
-}
-module_exit(am35x_exit);
-#endif
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
deleted file mode 100644
index d2cb91a..0000000
--- a/drivers/usb/musb/musb_gadget.c
+++ /dev/null
@@ -1,2333 +0,0 @@
-/*
- * MUSB OTG driver peripheral support
- *
- * Copyright 2005 Mentor Graphics Corporation
- * Copyright (C) 2005-2006 by Texas Instruments
- * Copyright (C) 2006-2007 Nokia Corporation
- * Copyright (C) 2009 MontaVista Software, Inc. <source@mvista.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#define __UBOOT__
-#ifndef __UBOOT__
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/timer.h>
-#include <linux/module.h>
-#include <linux/smp.h>
-#include <linux/spinlock.h>
-#include <linux/delay.h>
-#include <linux/dma-mapping.h>
-#include <linux/slab.h>
-#else
-#include <common.h>
-#include <linux/usb/ch9.h>
-#include "linux-compat.h"
-#endif
-
-#include "musb_core.h"
-
-
-/* MUSB PERIPHERAL status 3-mar-2006:
- *
- * - EP0 seems solid. It passes both USBCV and usbtest control cases.
- * Minor glitches:
- *
- * + remote wakeup to Linux hosts work, but saw USBCV failures;
- * in one test run (operator error?)
- * + endpoint halt tests -- in both usbtest and usbcv -- seem
- * to break when dma is enabled ... is something wrongly
- * clearing SENDSTALL?
- *
- * - Mass storage behaved ok when last tested. Network traffic patterns
- * (with lots of short transfers etc) need retesting; they turn up the
- * worst cases of the DMA, since short packets are typical but are not
- * required.
- *
- * - TX/IN
- * + both pio and dma behave in with network and g_zero tests
- * + no cppi throughput issues other than no-hw-queueing
- * + failed with FLAT_REG (DaVinci)
- * + seems to behave with double buffering, PIO -and- CPPI
- * + with gadgetfs + AIO, requests got lost?
- *
- * - RX/OUT
- * + both pio and dma behave in with network and g_zero tests
- * + dma is slow in typical case (short_not_ok is clear)
- * + double buffering ok with PIO
- * + double buffering *FAILS* with CPPI, wrong data bytes sometimes
- * + request lossage observed with gadgetfs
- *
- * - ISO not tested ... might work, but only weakly isochronous
- *
- * - Gadget driver disabling of softconnect during bind() is ignored; so
- * drivers can't hold off host requests until userspace is ready.
- * (Workaround: they can turn it off later.)
- *
- * - PORTABILITY (assumes PIO works):
- * + DaVinci, basically works with cppi dma
- * + OMAP 2430, ditto with mentor dma
- * + TUSB 6010, platform-specific dma in the works
- */
-
-/* ----------------------------------------------------------------------- */
-
-#define is_buffer_mapped(req) (is_dma_capable() && \
- (req->map_state != UN_MAPPED))
-
-#ifndef CONFIG_MUSB_PIO_ONLY
-/* Maps the buffer to dma */
-
-static inline void map_dma_buffer(struct musb_request *request,
- struct musb *musb, struct musb_ep *musb_ep)
-{
- int compatible = true;
- struct dma_controller *dma = musb->dma_controller;
-
- request->map_state = UN_MAPPED;
-
- if (!is_dma_capable() || !musb_ep->dma)
- return;
-
- /* Check if DMA engine can handle this request.
- * DMA code must reject the USB request explicitly.
- * Default behaviour is to map the request.
- */
- if (dma->is_compatible)
- compatible = dma->is_compatible(musb_ep->dma,
- musb_ep->packet_sz, request->request.buf,
- request->request.length);
- if (!compatible)
- return;
-
- if (request->request.dma == DMA_ADDR_INVALID) {
- request->request.dma = dma_map_single(
- musb->controller,
- request->request.buf,
- request->request.length,
- request->tx
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- request->map_state = MUSB_MAPPED;
- } else {
- dma_sync_single_for_device(musb->controller,
- request->request.dma,
- request->request.length,
- request->tx
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- request->map_state = PRE_MAPPED;
- }
-}
-
-/* Unmap the buffer from dma and maps it back to cpu */
-static inline void unmap_dma_buffer(struct musb_request *request,
- struct musb *musb)
-{
- if (!is_buffer_mapped(request))
- return;
-
- if (request->request.dma == DMA_ADDR_INVALID) {
- dev_vdbg(musb->controller,
- "not unmapping a never mapped buffer\n");
- return;
- }
- if (request->map_state == MUSB_MAPPED) {
- dma_unmap_single(musb->controller,
- request->request.dma,
- request->request.length,
- request->tx
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- request->request.dma = DMA_ADDR_INVALID;
- } else { /* PRE_MAPPED */
- dma_sync_single_for_cpu(musb->controller,
- request->request.dma,
- request->request.length,
- request->tx
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- }
- request->map_state = UN_MAPPED;
-}
-#else
-static inline void map_dma_buffer(struct musb_request *request,
- struct musb *musb, struct musb_ep *musb_ep)
-{
-}
-
-static inline void unmap_dma_buffer(struct musb_request *request,
- struct musb *musb)
-{
-}
-#endif
-
-/*
- * Immediately complete a request.
- *
- * @param request the request to complete
- * @param status the status to complete the request with
- * Context: controller locked, IRQs blocked.
- */
-void musb_g_giveback(
- struct musb_ep *ep,
- struct usb_request *request,
- int status)
-__releases(ep->musb->lock)
-__acquires(ep->musb->lock)
-{
- struct musb_request *req;
- struct musb *musb;
- int busy = ep->busy;
-
- req = to_musb_request(request);
-
- list_del(&req->list);
- if (req->request.status == -EINPROGRESS)
- req->request.status = status;
- musb = req->musb;
-
- ep->busy = 1;
- spin_unlock(&musb->lock);
- unmap_dma_buffer(req, musb);
- if (request->status == 0)
- dev_dbg(musb->controller, "%s done request %p, %d/%d\n",
- ep->end_point.name, request,
- req->request.actual, req->request.length);
- else
- dev_dbg(musb->controller, "%s request %p, %d/%d fault %d\n",
- ep->end_point.name, request,
- req->request.actual, req->request.length,
- request->status);
- req->request.complete(&req->ep->end_point, &req->request);
- spin_lock(&musb->lock);
- ep->busy = busy;
-}
-
-/* ----------------------------------------------------------------------- */
-
-/*
- * Abort requests queued to an endpoint using the status. Synchronous.
- * caller locked controller and blocked irqs, and selected this ep.
- */
-static void nuke(struct musb_ep *ep, const int status)
-{
- struct musb *musb = ep->musb;
- struct musb_request *req = NULL;
- void __iomem *epio = ep->musb->endpoints[ep->current_epnum].regs;
-
- ep->busy = 1;
-
- if (is_dma_capable() && ep->dma) {
- struct dma_controller *c = ep->musb->dma_controller;
- int value;
-
- if (ep->is_in) {
- /*
- * The programming guide says that we must not clear
- * the DMAMODE bit before DMAENAB, so we only
- * clear it in the second write...
- */
- musb_writew(epio, MUSB_TXCSR,
- MUSB_TXCSR_DMAMODE | MUSB_TXCSR_FLUSHFIFO);
- musb_writew(epio, MUSB_TXCSR,
- 0 | MUSB_TXCSR_FLUSHFIFO);
- } else {
- musb_writew(epio, MUSB_RXCSR,
- 0 | MUSB_RXCSR_FLUSHFIFO);
- musb_writew(epio, MUSB_RXCSR,
- 0 | MUSB_RXCSR_FLUSHFIFO);
- }
-
- value = c->channel_abort(ep->dma);
- dev_dbg(musb->controller, "%s: abort DMA --> %d\n",
- ep->name, value);
- c->channel_release(ep->dma);
- ep->dma = NULL;
- }
-
- while (!list_empty(&ep->req_list)) {
- req = list_first_entry(&ep->req_list, struct musb_request, list);
- musb_g_giveback(ep, &req->request, status);
- }
-}
-
-/* ----------------------------------------------------------------------- */
-
-/* Data transfers - pure PIO, pure DMA, or mixed mode */
-
-/*
- * This assumes the separate CPPI engine is responding to DMA requests
- * from the usb core ... sequenced a bit differently from mentor dma.
- */
-
-static inline int max_ep_writesize(struct musb *musb, struct musb_ep *ep)
-{
- if (can_bulk_split(musb, ep->type))
- return ep->hw_ep->max_packet_sz_tx;
- else
- return ep->packet_sz;
-}
-
-
-#ifdef CONFIG_USB_INVENTRA_DMA
-
-/* Peripheral tx (IN) using Mentor DMA works as follows:
- Only mode 0 is used for transfers <= wPktSize,
- mode 1 is used for larger transfers,
-
- One of the following happens:
- - Host sends IN token which causes an endpoint interrupt
- -> TxAvail
- -> if DMA is currently busy, exit.
- -> if queue is non-empty, txstate().
-
- - Request is queued by the gadget driver.
- -> if queue was previously empty, txstate()
-
- txstate()
- -> start
- /\ -> setup DMA
- | (data is transferred to the FIFO, then sent out when
- | IN token(s) are recd from Host.
- | -> DMA interrupt on completion
- | calls TxAvail.
- | -> stop DMA, ~DMAENAB,
- | -> set TxPktRdy for last short pkt or zlp
- | -> Complete Request
- | -> Continue next request (call txstate)
- |___________________________________|
-
- * Non-Mentor DMA engines can of course work differently, such as by
- * upleveling from irq-per-packet to irq-per-buffer.
- */
-
-#endif
-
-/*
- * An endpoint is transmitting data. This can be called either from
- * the IRQ routine or from ep.queue() to kickstart a request on an
- * endpoint.
- *
- * Context: controller locked, IRQs blocked, endpoint selected
- */
-static void txstate(struct musb *musb, struct musb_request *req)
-{
- u8 epnum = req->epnum;
- struct musb_ep *musb_ep;
- void __iomem *epio = musb->endpoints[epnum].regs;
- struct usb_request *request;
- u16 fifo_count = 0, csr;
- int use_dma = 0;
-
- musb_ep = req->ep;
-
- /* Check if EP is disabled */
- if (!musb_ep->desc) {
- dev_dbg(musb->controller, "ep:%s disabled - ignore request\n",
- musb_ep->end_point.name);
- return;
- }
-
- /* we shouldn't get here while DMA is active ... but we do ... */
- if (dma_channel_status(musb_ep->dma) == MUSB_DMA_STATUS_BUSY) {
- dev_dbg(musb->controller, "dma pending...\n");
- return;
- }
-
- /* read TXCSR before */
- csr = musb_readw(epio, MUSB_TXCSR);
-
- request = &req->request;
- fifo_count = min(max_ep_writesize(musb, musb_ep),
- (int)(request->length - request->actual));
-
- if (csr & MUSB_TXCSR_TXPKTRDY) {
- dev_dbg(musb->controller, "%s old packet still ready , txcsr %03x\n",
- musb_ep->end_point.name, csr);
- return;
- }
-
- if (csr & MUSB_TXCSR_P_SENDSTALL) {
- dev_dbg(musb->controller, "%s stalling, txcsr %03x\n",
- musb_ep->end_point.name, csr);
- return;
- }
-
- dev_dbg(musb->controller, "hw_ep%d, maxpacket %d, fifo count %d, txcsr %03x\n",
- epnum, musb_ep->packet_sz, fifo_count,
- csr);
-
-#ifndef CONFIG_MUSB_PIO_ONLY
- if (is_buffer_mapped(req)) {
- struct dma_controller *c = musb->dma_controller;
- size_t request_size;
-
- /* setup DMA, then program endpoint CSR */
- request_size = min_t(size_t, request->length - request->actual,
- musb_ep->dma->max_len);
-
- use_dma = (request->dma != DMA_ADDR_INVALID);
-
- /* MUSB_TXCSR_P_ISO is still set correctly */
-
-#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA)
- {
- if (request_size < musb_ep->packet_sz)
- musb_ep->dma->desired_mode = 0;
- else
- musb_ep->dma->desired_mode = 1;
-
- use_dma = use_dma && c->channel_program(
- musb_ep->dma, musb_ep->packet_sz,
- musb_ep->dma->desired_mode,
- request->dma + request->actual, request_size);
- if (use_dma) {
- if (musb_ep->dma->desired_mode == 0) {
- /*
- * We must not clear the DMAMODE bit
- * before the DMAENAB bit -- and the
- * latter doesn't always get cleared
- * before we get here...
- */
- csr &= ~(MUSB_TXCSR_AUTOSET
- | MUSB_TXCSR_DMAENAB);
- musb_writew(epio, MUSB_TXCSR, csr
- | MUSB_TXCSR_P_WZC_BITS);
- csr &= ~MUSB_TXCSR_DMAMODE;
- csr |= (MUSB_TXCSR_DMAENAB |
- MUSB_TXCSR_MODE);
- /* against programming guide */
- } else {
- csr |= (MUSB_TXCSR_DMAENAB
- | MUSB_TXCSR_DMAMODE
- | MUSB_TXCSR_MODE);
- if (!musb_ep->hb_mult)
- csr |= MUSB_TXCSR_AUTOSET;
- }
- csr &= ~MUSB_TXCSR_P_UNDERRUN;
-
- musb_writew(epio, MUSB_TXCSR, csr);
- }
- }
-
-#elif defined(CONFIG_USB_TI_CPPI_DMA)
- /* program endpoint CSR first, then setup DMA */
- csr &= ~(MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY);
- csr |= MUSB_TXCSR_DMAENAB | MUSB_TXCSR_DMAMODE |
- MUSB_TXCSR_MODE;
- musb_writew(epio, MUSB_TXCSR,
- (MUSB_TXCSR_P_WZC_BITS & ~MUSB_TXCSR_P_UNDERRUN)
- | csr);
-
- /* ensure writebuffer is empty */
- csr = musb_readw(epio, MUSB_TXCSR);
-
- /* NOTE host side sets DMAENAB later than this; both are
- * OK since the transfer dma glue (between CPPI and Mentor
- * fifos) just tells CPPI it could start. Data only moves
- * to the USB TX fifo when both fifos are ready.
- */
-
- /* "mode" is irrelevant here; handle terminating ZLPs like
- * PIO does, since the hardware RNDIS mode seems unreliable
- * except for the last-packet-is-already-short case.
- */
- use_dma = use_dma && c->channel_program(
- musb_ep->dma, musb_ep->packet_sz,
- 0,
- request->dma + request->actual,
- request_size);
- if (!use_dma) {
- c->channel_release(musb_ep->dma);
- musb_ep->dma = NULL;
- csr &= ~MUSB_TXCSR_DMAENAB;
- musb_writew(epio, MUSB_TXCSR, csr);
- /* invariant: prequest->buf is non-null */
- }
-#elif defined(CONFIG_USB_TUSB_OMAP_DMA)
- use_dma = use_dma && c->channel_program(
- musb_ep->dma, musb_ep->packet_sz,
- request->zero,
- request->dma + request->actual,
- request_size);
-#endif
- }
-#endif
-
- if (!use_dma) {
- /*
- * Unmap the dma buffer back to cpu if dma channel
- * programming fails
- */
- unmap_dma_buffer(req, musb);
-
- musb_write_fifo(musb_ep->hw_ep, fifo_count,
- (u8 *) (request->buf + request->actual));
- request->actual += fifo_count;
- csr |= MUSB_TXCSR_TXPKTRDY;
- csr &= ~MUSB_TXCSR_P_UNDERRUN;
- musb_writew(epio, MUSB_TXCSR, csr);
- }
-
- /* host may already have the data when this message shows... */
- dev_dbg(musb->controller, "%s TX/IN %s len %d/%d, txcsr %04x, fifo %d/%d\n",
- musb_ep->end_point.name, use_dma ? "dma" : "pio",
- request->actual, request->length,
- musb_readw(epio, MUSB_TXCSR),
- fifo_count,
- musb_readw(epio, MUSB_TXMAXP));
-}
-
-/*
- * FIFO state update (e.g. data ready).
- * Called from IRQ, with controller locked.
- */
-void musb_g_tx(struct musb *musb, u8 epnum)
-{
- u16 csr;
- struct musb_request *req;
- struct usb_request *request;
- u8 __iomem *mbase = musb->mregs;
- struct musb_ep *musb_ep = &musb->endpoints[epnum].ep_in;
- void __iomem *epio = musb->endpoints[epnum].regs;
- struct dma_channel *dma;
-
- musb_ep_select(mbase, epnum);
- req = next_request(musb_ep);
- request = &req->request;
-
- csr = musb_readw(epio, MUSB_TXCSR);
- dev_dbg(musb->controller, "<== %s, txcsr %04x\n", musb_ep->end_point.name, csr);
-
- dma = is_dma_capable() ? musb_ep->dma : NULL;
-
- /*
- * REVISIT: for high bandwidth, MUSB_TXCSR_P_INCOMPTX
- * probably rates reporting as a host error.
- */
- if (csr & MUSB_TXCSR_P_SENTSTALL) {
- csr |= MUSB_TXCSR_P_WZC_BITS;
- csr &= ~MUSB_TXCSR_P_SENTSTALL;
- musb_writew(epio, MUSB_TXCSR, csr);
- return;
- }
-
- if (csr & MUSB_TXCSR_P_UNDERRUN) {
- /* We NAKed, no big deal... little reason to care. */
- csr |= MUSB_TXCSR_P_WZC_BITS;
- csr &= ~(MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY);
- musb_writew(epio, MUSB_TXCSR, csr);
- dev_vdbg(musb->controller, "underrun on ep%d, req %p\n",
- epnum, request);
- }
-
- if (dma_channel_status(dma) == MUSB_DMA_STATUS_BUSY) {
- /*
- * SHOULD NOT HAPPEN... has with CPPI though, after
- * changing SENDSTALL (and other cases); harmless?
- */
- dev_dbg(musb->controller, "%s dma still busy?\n", musb_ep->end_point.name);
- return;
- }
-
- if (request) {
- u8 is_dma = 0;
-
- if (dma && (csr & MUSB_TXCSR_DMAENAB)) {
- is_dma = 1;
- csr |= MUSB_TXCSR_P_WZC_BITS;
- csr &= ~(MUSB_TXCSR_DMAENAB | MUSB_TXCSR_P_UNDERRUN |
- MUSB_TXCSR_TXPKTRDY | MUSB_TXCSR_AUTOSET);
- musb_writew(epio, MUSB_TXCSR, csr);
- /* Ensure writebuffer is empty. */
- csr = musb_readw(epio, MUSB_TXCSR);
- request->actual += musb_ep->dma->actual_len;
- dev_dbg(musb->controller, "TXCSR%d %04x, DMA off, len %zu, req %p\n",
- epnum, csr, musb_ep->dma->actual_len, request);
- }
-
- /*
- * First, maybe a terminating short packet. Some DMA
- * engines might handle this by themselves.
- */
- if ((request->zero && request->length
- && (request->length % musb_ep->packet_sz == 0)
- && (request->actual == request->length))
-#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA)
- || (is_dma && (!dma->desired_mode ||
- (request->actual &
- (musb_ep->packet_sz - 1))))
-#endif
- ) {
- /*
- * On DMA completion, FIFO may not be
- * available yet...
- */
- if (csr & MUSB_TXCSR_TXPKTRDY)
- return;
-
- dev_dbg(musb->controller, "sending zero pkt\n");
- musb_writew(epio, MUSB_TXCSR, MUSB_TXCSR_MODE
- | MUSB_TXCSR_TXPKTRDY);
- request->zero = 0;
- }
-
- if (request->actual == request->length) {
- musb_g_giveback(musb_ep, request, 0);
- /*
- * In the giveback function the MUSB lock is
- * released and acquired after sometime. During
- * this time period the INDEX register could get
- * changed by the gadget_queue function especially
- * on SMP systems. Reselect the INDEX to be sure
- * we are reading/modifying the right registers
- */
- musb_ep_select(mbase, epnum);
- req = musb_ep->desc ? next_request(musb_ep) : NULL;
- if (!req) {
- dev_dbg(musb->controller, "%s idle now\n",
- musb_ep->end_point.name);
- return;
- }
- }
-
- txstate(musb, req);
- }
-}
-
-/* ------------------------------------------------------------ */
-
-#ifdef CONFIG_USB_INVENTRA_DMA
-
-/* Peripheral rx (OUT) using Mentor DMA works as follows:
- - Only mode 0 is used.
-
- - Request is queued by the gadget class driver.
- -> if queue was previously empty, rxstate()
-
- - Host sends OUT token which causes an endpoint interrupt
- /\ -> RxReady
- | -> if request queued, call rxstate
- | /\ -> setup DMA
- | | -> DMA interrupt on completion
- | | -> RxReady
- | | -> stop DMA
- | | -> ack the read
- | | -> if data recd = max expected
- | | by the request, or host
- | | sent a short packet,
- | | complete the request,
- | | and start the next one.
- | |_____________________________________|
- | else just wait for the host
- | to send the next OUT token.
- |__________________________________________________|
-
- * Non-Mentor DMA engines can of course work differently.
- */
-
-#endif
-
-/*
- * Context: controller locked, IRQs blocked, endpoint selected
- */
-static void rxstate(struct musb *musb, struct musb_request *req)
-{
- const u8 epnum = req->epnum;
- struct usb_request *request = &req->request;
- struct musb_ep *musb_ep;
- void __iomem *epio = musb->endpoints[epnum].regs;
- unsigned fifo_count = 0;
- u16 len;
- u16 csr = musb_readw(epio, MUSB_RXCSR);
- struct musb_hw_ep *hw_ep = &musb->endpoints[epnum];
- u8 use_mode_1;
-
- if (hw_ep->is_shared_fifo)
- musb_ep = &hw_ep->ep_in;
- else
- musb_ep = &hw_ep->ep_out;
-
- len = musb_ep->packet_sz;
-
- /* Check if EP is disabled */
- if (!musb_ep->desc) {
- dev_dbg(musb->controller, "ep:%s disabled - ignore request\n",
- musb_ep->end_point.name);
- return;
- }
-
- /* We shouldn't get here while DMA is active, but we do... */
- if (dma_channel_status(musb_ep->dma) == MUSB_DMA_STATUS_BUSY) {
- dev_dbg(musb->controller, "DMA pending...\n");
- return;
- }
-
- if (csr & MUSB_RXCSR_P_SENDSTALL) {
- dev_dbg(musb->controller, "%s stalling, RXCSR %04x\n",
- musb_ep->end_point.name, csr);
- return;
- }
-
- if (is_cppi_enabled() && is_buffer_mapped(req)) {
- struct dma_controller *c = musb->dma_controller;
- struct dma_channel *channel = musb_ep->dma;
-
- /* NOTE: CPPI won't actually stop advancing the DMA
- * queue after short packet transfers, so this is almost
- * always going to run as IRQ-per-packet DMA so that
- * faults will be handled correctly.
- */
- if (c->channel_program(channel,
- musb_ep->packet_sz,
- !request->short_not_ok,
- request->dma + request->actual,
- request->length - request->actual)) {
-
- /* make sure that if an rxpkt arrived after the irq,
- * the cppi engine will be ready to take it as soon
- * as DMA is enabled
- */
- csr &= ~(MUSB_RXCSR_AUTOCLEAR
- | MUSB_RXCSR_DMAMODE);
- csr |= MUSB_RXCSR_DMAENAB | MUSB_RXCSR_P_WZC_BITS;
- musb_writew(epio, MUSB_RXCSR, csr);
- return;
- }
- }
-
- if (csr & MUSB_RXCSR_RXPKTRDY) {
- len = musb_readw(epio, MUSB_RXCOUNT);
-
- /*
- * Enable Mode 1 on RX transfers only when short_not_ok flag
- * is set. Currently short_not_ok flag is set only from
- * file_storage and f_mass_storage drivers
- */
-
- if (request->short_not_ok && len == musb_ep->packet_sz)
- use_mode_1 = 1;
- else
- use_mode_1 = 0;
-
- if (request->actual < request->length) {
-#ifdef CONFIG_USB_INVENTRA_DMA
- if (is_buffer_mapped(req)) {
- struct dma_controller *c;
- struct dma_channel *channel;
- int use_dma = 0;
-
- c = musb->dma_controller;
- channel = musb_ep->dma;
-
- /* We use DMA Req mode 0 in rx_csr, and DMA controller operates in
- * mode 0 only. So we do not get endpoint interrupts due to DMA
- * completion. We only get interrupts from DMA controller.
- *
- * We could operate in DMA mode 1 if we knew the size of the tranfer
- * in advance. For mass storage class, request->length = what the host
- * sends, so that'd work. But for pretty much everything else,
- * request->length is routinely more than what the host sends. For
- * most these gadgets, end of is signified either by a short packet,
- * or filling the last byte of the buffer. (Sending extra data in
- * that last pckate should trigger an overflow fault.) But in mode 1,
- * we don't get DMA completion interrupt for short packets.
- *
- * Theoretically, we could enable DMAReq irq (MUSB_RXCSR_DMAMODE = 1),
- * to get endpoint interrupt on every DMA req, but that didn't seem
- * to work reliably.
- *
- * REVISIT an updated g_file_storage can set req->short_not_ok, which
- * then becomes usable as a runtime "use mode 1" hint...
- */
-
- /* Experimental: Mode1 works with mass storage use cases */
- if (use_mode_1) {
- csr |= MUSB_RXCSR_AUTOCLEAR;
- musb_writew(epio, MUSB_RXCSR, csr);
- csr |= MUSB_RXCSR_DMAENAB;
- musb_writew(epio, MUSB_RXCSR, csr);
-
- /*
- * this special sequence (enabling and then
- * disabling MUSB_RXCSR_DMAMODE) is required
- * to get DMAReq to activate
- */
- musb_writew(epio, MUSB_RXCSR,
- csr | MUSB_RXCSR_DMAMODE);
- musb_writew(epio, MUSB_RXCSR, csr);
-
- } else {
- if (!musb_ep->hb_mult &&
- musb_ep->hw_ep->rx_double_buffered)
- csr |= MUSB_RXCSR_AUTOCLEAR;
- csr |= MUSB_RXCSR_DMAENAB;
- musb_writew(epio, MUSB_RXCSR, csr);
- }
-
- if (request->actual < request->length) {
- int transfer_size = 0;
- if (use_mode_1) {
- transfer_size = min(request->length - request->actual,
- channel->max_len);
- musb_ep->dma->desired_mode = 1;
- } else {
- transfer_size = min(request->length - request->actual,
- (unsigned)len);
- musb_ep->dma->desired_mode = 0;
- }
-
- use_dma = c->channel_program(
- channel,
- musb_ep->packet_sz,
- channel->desired_mode,
- request->dma
- + request->actual,
- transfer_size);
- }
-
- if (use_dma)
- return;
- }
-#elif defined(CONFIG_USB_UX500_DMA)
- if ((is_buffer_mapped(req)) &&
- (request->actual < request->length)) {
-
- struct dma_controller *c;
- struct dma_channel *channel;
- int transfer_size = 0;
-
- c = musb->dma_controller;
- channel = musb_ep->dma;
-
- /* In case first packet is short */
- if (len < musb_ep->packet_sz)
- transfer_size = len;
- else if (request->short_not_ok)
- transfer_size = min(request->length -
- request->actual,
- channel->max_len);
- else
- transfer_size = min(request->length -
- request->actual,
- (unsigned)len);
-
- csr &= ~MUSB_RXCSR_DMAMODE;
- csr |= (MUSB_RXCSR_DMAENAB |
- MUSB_RXCSR_AUTOCLEAR);
-
- musb_writew(epio, MUSB_RXCSR, csr);
-
- if (transfer_size <= musb_ep->packet_sz) {
- musb_ep->dma->desired_mode = 0;
- } else {
- musb_ep->dma->desired_mode = 1;
- /* Mode must be set after DMAENAB */
- csr |= MUSB_RXCSR_DMAMODE;
- musb_writew(epio, MUSB_RXCSR, csr);
- }
-
- if (c->channel_program(channel,
- musb_ep->packet_sz,
- channel->desired_mode,
- request->dma
- + request->actual,
- transfer_size))
-
- return;
- }
-#endif /* Mentor's DMA */
-
- fifo_count = request->length - request->actual;
- dev_dbg(musb->controller, "%s OUT/RX pio fifo %d/%d, maxpacket %d\n",
- musb_ep->end_point.name,
- len, fifo_count,
- musb_ep->packet_sz);
-
- fifo_count = min_t(unsigned, len, fifo_count);
-
-#ifdef CONFIG_USB_TUSB_OMAP_DMA
- if (tusb_dma_omap() && is_buffer_mapped(req)) {
- struct dma_controller *c = musb->dma_controller;
- struct dma_channel *channel = musb_ep->dma;
- u32 dma_addr = request->dma + request->actual;
- int ret;
-
- ret = c->channel_program(channel,
- musb_ep->packet_sz,
- channel->desired_mode,
- dma_addr,
- fifo_count);
- if (ret)
- return;
- }
-#endif
- /*
- * Unmap the dma buffer back to cpu if dma channel
- * programming fails. This buffer is mapped if the
- * channel allocation is successful
- */
- if (is_buffer_mapped(req)) {
- unmap_dma_buffer(req, musb);
-
- /*
- * Clear DMAENAB and AUTOCLEAR for the
- * PIO mode transfer
- */
- csr &= ~(MUSB_RXCSR_DMAENAB | MUSB_RXCSR_AUTOCLEAR);
- musb_writew(epio, MUSB_RXCSR, csr);
- }
-
- musb_read_fifo(musb_ep->hw_ep, fifo_count, (u8 *)
- (request->buf + request->actual));
- request->actual += fifo_count;
-
- /* REVISIT if we left anything in the fifo, flush
- * it and report -EOVERFLOW
- */
-
- /* ack the read! */
- csr |= MUSB_RXCSR_P_WZC_BITS;
- csr &= ~MUSB_RXCSR_RXPKTRDY;
- musb_writew(epio, MUSB_RXCSR, csr);
- }
- }
-
- /* reach the end or short packet detected */
- if (request->actual == request->length || len < musb_ep->packet_sz)
- musb_g_giveback(musb_ep, request, 0);
-}
-
-/*
- * Data ready for a request; called from IRQ
- */
-void musb_g_rx(struct musb *musb, u8 epnum)
-{
- u16 csr;
- struct musb_request *req;
- struct usb_request *request;
- void __iomem *mbase = musb->mregs;
- struct musb_ep *musb_ep;
- void __iomem *epio = musb->endpoints[epnum].regs;
- struct dma_channel *dma;
- struct musb_hw_ep *hw_ep = &musb->endpoints[epnum];
-
- if (hw_ep->is_shared_fifo)
- musb_ep = &hw_ep->ep_in;
- else
- musb_ep = &hw_ep->ep_out;
-
- musb_ep_select(mbase, epnum);
-
- req = next_request(musb_ep);
- if (!req)
- return;
-
- request = &req->request;
-
- csr = musb_readw(epio, MUSB_RXCSR);
- dma = is_dma_capable() ? musb_ep->dma : NULL;
-
- dev_dbg(musb->controller, "<== %s, rxcsr %04x%s %p\n", musb_ep->end_point.name,
- csr, dma ? " (dma)" : "", request);
-
- if (csr & MUSB_RXCSR_P_SENTSTALL) {
- csr |= MUSB_RXCSR_P_WZC_BITS;
- csr &= ~MUSB_RXCSR_P_SENTSTALL;
- musb_writew(epio, MUSB_RXCSR, csr);
- return;
- }
-
- if (csr & MUSB_RXCSR_P_OVERRUN) {
- /* csr |= MUSB_RXCSR_P_WZC_BITS; */
- csr &= ~MUSB_RXCSR_P_OVERRUN;
- musb_writew(epio, MUSB_RXCSR, csr);
-
- dev_dbg(musb->controller, "%s iso overrun on %p\n", musb_ep->name, request);
- if (request->status == -EINPROGRESS)
- request->status = -EOVERFLOW;
- }
- if (csr & MUSB_RXCSR_INCOMPRX) {
- /* REVISIT not necessarily an error */
- dev_dbg(musb->controller, "%s, incomprx\n", musb_ep->end_point.name);
- }
-
- if (dma_channel_status(dma) == MUSB_DMA_STATUS_BUSY) {
- /* "should not happen"; likely RXPKTRDY pending for DMA */
- dev_dbg(musb->controller, "%s busy, csr %04x\n",
- musb_ep->end_point.name, csr);
- return;
- }
-
- if (dma && (csr & MUSB_RXCSR_DMAENAB)) {
- csr &= ~(MUSB_RXCSR_AUTOCLEAR
- | MUSB_RXCSR_DMAENAB
- | MUSB_RXCSR_DMAMODE);
- musb_writew(epio, MUSB_RXCSR,
- MUSB_RXCSR_P_WZC_BITS | csr);
-
- request->actual += musb_ep->dma->actual_len;
-
- dev_dbg(musb->controller, "RXCSR%d %04x, dma off, %04x, len %zu, req %p\n",
- epnum, csr,
- musb_readw(epio, MUSB_RXCSR),
- musb_ep->dma->actual_len, request);
-
-#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_TUSB_OMAP_DMA) || \
- defined(CONFIG_USB_UX500_DMA)
- /* Autoclear doesn't clear RxPktRdy for short packets */
- if ((dma->desired_mode == 0 && !hw_ep->rx_double_buffered)
- || (dma->actual_len
- & (musb_ep->packet_sz - 1))) {
- /* ack the read! */
- csr &= ~MUSB_RXCSR_RXPKTRDY;
- musb_writew(epio, MUSB_RXCSR, csr);
- }
-
- /* incomplete, and not short? wait for next IN packet */
- if ((request->actual < request->length)
- && (musb_ep->dma->actual_len
- == musb_ep->packet_sz)) {
- /* In double buffer case, continue to unload fifo if
- * there is Rx packet in FIFO.
- **/
- csr = musb_readw(epio, MUSB_RXCSR);
- if ((csr & MUSB_RXCSR_RXPKTRDY) &&
- hw_ep->rx_double_buffered)
- goto exit;
- return;
- }
-#endif
- musb_g_giveback(musb_ep, request, 0);
- /*
- * In the giveback function the MUSB lock is
- * released and acquired after sometime. During
- * this time period the INDEX register could get
- * changed by the gadget_queue function especially
- * on SMP systems. Reselect the INDEX to be sure
- * we are reading/modifying the right registers
- */
- musb_ep_select(mbase, epnum);
-
- req = next_request(musb_ep);
- if (!req)
- return;
- }
-#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_TUSB_OMAP_DMA) || \
- defined(CONFIG_USB_UX500_DMA)
-exit:
-#endif
- /* Analyze request */
- rxstate(musb, req);
-}
-
-/* ------------------------------------------------------------ */
-
-static int musb_gadget_enable(struct usb_ep *ep,
- const struct usb_endpoint_descriptor *desc)
-{
- unsigned long flags;
- struct musb_ep *musb_ep;
- struct musb_hw_ep *hw_ep;
- void __iomem *regs;
- struct musb *musb;
- void __iomem *mbase;
- u8 epnum;
- u16 csr;
- unsigned tmp;
- int status = -EINVAL;
-
- if (!ep || !desc)
- return -EINVAL;
-
- musb_ep = to_musb_ep(ep);
- hw_ep = musb_ep->hw_ep;
- regs = hw_ep->regs;
- musb = musb_ep->musb;
- mbase = musb->mregs;
- epnum = musb_ep->current_epnum;
-
- spin_lock_irqsave(&musb->lock, flags);
-
- if (musb_ep->desc) {
- status = -EBUSY;
- goto fail;
- }
- musb_ep->type = usb_endpoint_type(desc);
-
- /* check direction and (later) maxpacket size against endpoint */
- if (usb_endpoint_num(desc) != epnum)
- goto fail;
-
- /* REVISIT this rules out high bandwidth periodic transfers */
- tmp = usb_endpoint_maxp(desc);
- if (tmp & ~0x07ff) {
- int ok;
-
- if (usb_endpoint_dir_in(desc))
- ok = musb->hb_iso_tx;
- else
- ok = musb->hb_iso_rx;
-
- if (!ok) {
- dev_dbg(musb->controller, "no support for high bandwidth ISO\n");
- goto fail;
- }
- musb_ep->hb_mult = (tmp >> 11) & 3;
- } else {
- musb_ep->hb_mult = 0;
- }
-
- musb_ep->packet_sz = tmp & 0x7ff;
- tmp = musb_ep->packet_sz * (musb_ep->hb_mult + 1);
-
- /* enable the interrupts for the endpoint, set the endpoint
- * packet size (or fail), set the mode, clear the fifo
- */
- musb_ep_select(mbase, epnum);
- if (usb_endpoint_dir_in(desc)) {
- u16 int_txe = musb_readw(mbase, MUSB_INTRTXE);
-
- if (hw_ep->is_shared_fifo)
- musb_ep->is_in = 1;
- if (!musb_ep->is_in)
- goto fail;
-
- if (tmp > hw_ep->max_packet_sz_tx) {
- dev_dbg(musb->controller, "packet size beyond hardware FIFO size\n");
- goto fail;
- }
-
- int_txe |= (1 << epnum);
- musb_writew(mbase, MUSB_INTRTXE, int_txe);
-
- /* REVISIT if can_bulk_split(), use by updating "tmp";
- * likewise high bandwidth periodic tx
- */
- /* Set TXMAXP with the FIFO size of the endpoint
- * to disable double buffering mode.
- */
- if (musb->double_buffer_not_ok)
- musb_writew(regs, MUSB_TXMAXP, hw_ep->max_packet_sz_tx);
- else
- musb_writew(regs, MUSB_TXMAXP, musb_ep->packet_sz
- | (musb_ep->hb_mult << 11));
-
- csr = MUSB_TXCSR_MODE | MUSB_TXCSR_CLRDATATOG;
- if (musb_readw(regs, MUSB_TXCSR)
- & MUSB_TXCSR_FIFONOTEMPTY)
- csr |= MUSB_TXCSR_FLUSHFIFO;
- if (musb_ep->type == USB_ENDPOINT_XFER_ISOC)
- csr |= MUSB_TXCSR_P_ISO;
-
- /* set twice in case of double buffering */
- musb_writew(regs, MUSB_TXCSR, csr);
- /* REVISIT may be inappropriate w/o FIFONOTEMPTY ... */
- musb_writew(regs, MUSB_TXCSR, csr);
-
- } else {
- u16 int_rxe = musb_readw(mbase, MUSB_INTRRXE);
-
- if (hw_ep->is_shared_fifo)
- musb_ep->is_in = 0;
- if (musb_ep->is_in)
- goto fail;
-
- if (tmp > hw_ep->max_packet_sz_rx) {
- dev_dbg(musb->controller, "packet size beyond hardware FIFO size\n");
- goto fail;
- }
-
- int_rxe |= (1 << epnum);
- musb_writew(mbase, MUSB_INTRRXE, int_rxe);
-
- /* REVISIT if can_bulk_combine() use by updating "tmp"
- * likewise high bandwidth periodic rx
- */
- /* Set RXMAXP with the FIFO size of the endpoint
- * to disable double buffering mode.
- */
- if (musb->double_buffer_not_ok)
- musb_writew(regs, MUSB_RXMAXP, hw_ep->max_packet_sz_tx);
- else
- musb_writew(regs, MUSB_RXMAXP, musb_ep->packet_sz
- | (musb_ep->hb_mult << 11));
-
- /* force shared fifo to OUT-only mode */
- if (hw_ep->is_shared_fifo) {
- csr = musb_readw(regs, MUSB_TXCSR);
- csr &= ~(MUSB_TXCSR_MODE | MUSB_TXCSR_TXPKTRDY);
- musb_writew(regs, MUSB_TXCSR, csr);
- }
-
- csr = MUSB_RXCSR_FLUSHFIFO | MUSB_RXCSR_CLRDATATOG;
- if (musb_ep->type == USB_ENDPOINT_XFER_ISOC)
- csr |= MUSB_RXCSR_P_ISO;
- else if (musb_ep->type == USB_ENDPOINT_XFER_INT)
- csr |= MUSB_RXCSR_DISNYET;
-
- /* set twice in case of double buffering */
- musb_writew(regs, MUSB_RXCSR, csr);
- musb_writew(regs, MUSB_RXCSR, csr);
- }
-
- /* NOTE: all the I/O code _should_ work fine without DMA, in case
- * for some reason you run out of channels here.
- */
- if (is_dma_capable() && musb->dma_controller) {
- struct dma_controller *c = musb->dma_controller;
-
- musb_ep->dma = c->channel_alloc(c, hw_ep,
- (desc->bEndpointAddress & USB_DIR_IN));
- } else
- musb_ep->dma = NULL;
-
- musb_ep->desc = desc;
- musb_ep->busy = 0;
- musb_ep->wedged = 0;
- status = 0;
-
- pr_debug("%s periph: enabled %s for %s %s, %smaxpacket %d\n",
- musb_driver_name, musb_ep->end_point.name,
- ({ char *s; switch (musb_ep->type) {
- case USB_ENDPOINT_XFER_BULK: s = "bulk"; break;
- case USB_ENDPOINT_XFER_INT: s = "int"; break;
- default: s = "iso"; break;
- }; s; }),
- musb_ep->is_in ? "IN" : "OUT",
- musb_ep->dma ? "dma, " : "",
- musb_ep->packet_sz);
-
- schedule_work(&musb->irq_work);
-
-fail:
- spin_unlock_irqrestore(&musb->lock, flags);
- return status;
-}
-
-/*
- * Disable an endpoint flushing all requests queued.
- */
-static int musb_gadget_disable(struct usb_ep *ep)
-{
- unsigned long flags;
- struct musb *musb;
- u8 epnum;
- struct musb_ep *musb_ep;
- void __iomem *epio;
- int status = 0;
-
- musb_ep = to_musb_ep(ep);
- musb = musb_ep->musb;
- epnum = musb_ep->current_epnum;
- epio = musb->endpoints[epnum].regs;
-
- spin_lock_irqsave(&musb->lock, flags);
- musb_ep_select(musb->mregs, epnum);
-
- /* zero the endpoint sizes */
- if (musb_ep->is_in) {
- u16 int_txe = musb_readw(musb->mregs, MUSB_INTRTXE);
- int_txe &= ~(1 << epnum);
- musb_writew(musb->mregs, MUSB_INTRTXE, int_txe);
- musb_writew(epio, MUSB_TXMAXP, 0);
- } else {
- u16 int_rxe = musb_readw(musb->mregs, MUSB_INTRRXE);
- int_rxe &= ~(1 << epnum);
- musb_writew(musb->mregs, MUSB_INTRRXE, int_rxe);
- musb_writew(epio, MUSB_RXMAXP, 0);
- }
-
- musb_ep->desc = NULL;
-#ifndef __UBOOT__
- musb_ep->end_point.desc = NULL;
-#endif
-
- /* abort all pending DMA and requests */
- nuke(musb_ep, -ESHUTDOWN);
-
- schedule_work(&musb->irq_work);
-
- spin_unlock_irqrestore(&(musb->lock), flags);
-
- dev_dbg(musb->controller, "%s\n", musb_ep->end_point.name);
-
- return status;
-}
-
-/*
- * Allocate a request for an endpoint.
- * Reused by ep0 code.
- */
-struct usb_request *musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
-{
- struct musb_ep *musb_ep = to_musb_ep(ep);
- struct musb *musb = musb_ep->musb;
- struct musb_request *request = NULL;
-
- request = kzalloc(sizeof *request, gfp_flags);
- if (!request) {
- dev_dbg(musb->controller, "not enough memory\n");
- return NULL;
- }
-
- request->request.dma = DMA_ADDR_INVALID;
- request->epnum = musb_ep->current_epnum;
- request->ep = musb_ep;
-
- return &request->request;
-}
-
-/*
- * Free a request
- * Reused by ep0 code.
- */
-void musb_free_request(struct usb_ep *ep, struct usb_request *req)
-{
- kfree(to_musb_request(req));
-}
-
-static LIST_HEAD(buffers);
-
-struct free_record {
- struct list_head list;
- struct device *dev;
- unsigned bytes;
- dma_addr_t dma;
-};
-
-/*
- * Context: controller locked, IRQs blocked.
- */
-void musb_ep_restart(struct musb *musb, struct musb_request *req)
-{
- dev_dbg(musb->controller, "<== %s request %p len %u on hw_ep%d\n",
- req->tx ? "TX/IN" : "RX/OUT",
- &req->request, req->request.length, req->epnum);
-
- musb_ep_select(musb->mregs, req->epnum);
- if (req->tx)
- txstate(musb, req);
- else
- rxstate(musb, req);
-}
-
-static int musb_gadget_queue(struct usb_ep *ep, struct usb_request *req,
- gfp_t gfp_flags)
-{
- struct musb_ep *musb_ep;
- struct musb_request *request;
- struct musb *musb;
- int status = 0;
- unsigned long lockflags;
-
- if (!ep || !req)
- return -EINVAL;
- if (!req->buf)
- return -ENODATA;
-
- musb_ep = to_musb_ep(ep);
- musb = musb_ep->musb;
-
- request = to_musb_request(req);
- request->musb = musb;
-
- if (request->ep != musb_ep)
- return -EINVAL;
-
- dev_dbg(musb->controller, "<== to %s request=%p\n", ep->name, req);
-
- /* request is mine now... */
- request->request.actual = 0;
- request->request.status = -EINPROGRESS;
- request->epnum = musb_ep->current_epnum;
- request->tx = musb_ep->is_in;
-
- map_dma_buffer(request, musb, musb_ep);
-
- spin_lock_irqsave(&musb->lock, lockflags);
-
- /* don't queue if the ep is down */
- if (!musb_ep->desc) {
- dev_dbg(musb->controller, "req %p queued to %s while ep %s\n",
- req, ep->name, "disabled");
- status = -ESHUTDOWN;
- goto cleanup;
- }
-
- /* add request to the list */
- list_add_tail(&request->list, &musb_ep->req_list);
-
- /* it this is the head of the queue, start i/o ... */
- if (!musb_ep->busy && &request->list == musb_ep->req_list.next)
- musb_ep_restart(musb, request);
-
-cleanup:
- spin_unlock_irqrestore(&musb->lock, lockflags);
- return status;
-}
-
-static int musb_gadget_dequeue(struct usb_ep *ep, struct usb_request *request)
-{
- struct musb_ep *musb_ep = to_musb_ep(ep);
- struct musb_request *req = to_musb_request(request);
- struct musb_request *r;
- unsigned long flags;
- int status = 0;
- struct musb *musb = musb_ep->musb;
-
- if (!ep || !request || to_musb_request(request)->ep != musb_ep)
- return -EINVAL;
-
- spin_lock_irqsave(&musb->lock, flags);
-
- list_for_each_entry(r, &musb_ep->req_list, list) {
- if (r == req)
- break;
- }
- if (r != req) {
- dev_dbg(musb->controller, "request %p not queued to %s\n", request, ep->name);
- status = -EINVAL;
- goto done;
- }
-
- /* if the hardware doesn't have the request, easy ... */
- if (musb_ep->req_list.next != &req->list || musb_ep->busy)
- musb_g_giveback(musb_ep, request, -ECONNRESET);
-
- /* ... else abort the dma transfer ... */
- else if (is_dma_capable() && musb_ep->dma) {
- struct dma_controller *c = musb->dma_controller;
-
- musb_ep_select(musb->mregs, musb_ep->current_epnum);
- if (c->channel_abort)
- status = c->channel_abort(musb_ep->dma);
- else
- status = -EBUSY;
- if (status == 0)
- musb_g_giveback(musb_ep, request, -ECONNRESET);
- } else {
- /* NOTE: by sticking to easily tested hardware/driver states,
- * we leave counting of in-flight packets imprecise.
- */
- musb_g_giveback(musb_ep, request, -ECONNRESET);
- }
-
-done:
- spin_unlock_irqrestore(&musb->lock, flags);
- return status;
-}
-
-/*
- * Set or clear the halt bit of an endpoint. A halted enpoint won't tx/rx any
- * data but will queue requests.
- *
- * exported to ep0 code
- */
-static int musb_gadget_set_halt(struct usb_ep *ep, int value)
-{
- struct musb_ep *musb_ep = to_musb_ep(ep);
- u8 epnum = musb_ep->current_epnum;
- struct musb *musb = musb_ep->musb;
- void __iomem *epio = musb->endpoints[epnum].regs;
- void __iomem *mbase;
- unsigned long flags;
- u16 csr;
- struct musb_request *request;
- int status = 0;
-
- if (!ep)
- return -EINVAL;
- mbase = musb->mregs;
-
- spin_lock_irqsave(&musb->lock, flags);
-
- if ((USB_ENDPOINT_XFER_ISOC == musb_ep->type)) {
- status = -EINVAL;
- goto done;
- }
-
- musb_ep_select(mbase, epnum);
-
- request = next_request(musb_ep);
- if (value) {
- if (request) {
- dev_dbg(musb->controller, "request in progress, cannot halt %s\n",
- ep->name);
- status = -EAGAIN;
- goto done;
- }
- /* Cannot portably stall with non-empty FIFO */
- if (musb_ep->is_in) {
- csr = musb_readw(epio, MUSB_TXCSR);
- if (csr & MUSB_TXCSR_FIFONOTEMPTY) {
- dev_dbg(musb->controller, "FIFO busy, cannot halt %s\n", ep->name);
- status = -EAGAIN;
- goto done;
- }
- }
- } else
- musb_ep->wedged = 0;
-
- /* set/clear the stall and toggle bits */
- dev_dbg(musb->controller, "%s: %s stall\n", ep->name, value ? "set" : "clear");
- if (musb_ep->is_in) {
- csr = musb_readw(epio, MUSB_TXCSR);
- csr |= MUSB_TXCSR_P_WZC_BITS
- | MUSB_TXCSR_CLRDATATOG;
- if (value)
- csr |= MUSB_TXCSR_P_SENDSTALL;
- else
- csr &= ~(MUSB_TXCSR_P_SENDSTALL
- | MUSB_TXCSR_P_SENTSTALL);
- csr &= ~MUSB_TXCSR_TXPKTRDY;
- musb_writew(epio, MUSB_TXCSR, csr);
- } else {
- csr = musb_readw(epio, MUSB_RXCSR);
- csr |= MUSB_RXCSR_P_WZC_BITS
- | MUSB_RXCSR_FLUSHFIFO
- | MUSB_RXCSR_CLRDATATOG;
- if (value)
- csr |= MUSB_RXCSR_P_SENDSTALL;
- else
- csr &= ~(MUSB_RXCSR_P_SENDSTALL
- | MUSB_RXCSR_P_SENTSTALL);
- musb_writew(epio, MUSB_RXCSR, csr);
- }
-
- /* maybe start the first request in the queue */
- if (!musb_ep->busy && !value && request) {
- dev_dbg(musb->controller, "restarting the request\n");
- musb_ep_restart(musb, request);
- }
-
-done:
- spin_unlock_irqrestore(&musb->lock, flags);
- return status;
-}
-
-#ifndef __UBOOT__
-/*
- * Sets the halt feature with the clear requests ignored
- */
-static int musb_gadget_set_wedge(struct usb_ep *ep)
-{
- struct musb_ep *musb_ep = to_musb_ep(ep);
-
- if (!ep)
- return -EINVAL;
-
- musb_ep->wedged = 1;
-
- return usb_ep_set_halt(ep);
-}
-#endif
-
-static int musb_gadget_fifo_status(struct usb_ep *ep)
-{
- struct musb_ep *musb_ep = to_musb_ep(ep);
- void __iomem *epio = musb_ep->hw_ep->regs;
- int retval = -EINVAL;
-
- if (musb_ep->desc && !musb_ep->is_in) {
- struct musb *musb = musb_ep->musb;
- int epnum = musb_ep->current_epnum;
- void __iomem *mbase = musb->mregs;
- unsigned long flags;
-
- spin_lock_irqsave(&musb->lock, flags);
-
- musb_ep_select(mbase, epnum);
- /* FIXME return zero unless RXPKTRDY is set */
- retval = musb_readw(epio, MUSB_RXCOUNT);
-
- spin_unlock_irqrestore(&musb->lock, flags);
- }
- return retval;
-}
-
-static void musb_gadget_fifo_flush(struct usb_ep *ep)
-{
- struct musb_ep *musb_ep = to_musb_ep(ep);
- struct musb *musb = musb_ep->musb;
- u8 epnum = musb_ep->current_epnum;
- void __iomem *epio = musb->endpoints[epnum].regs;
- void __iomem *mbase;
- unsigned long flags;
- u16 csr, int_txe;
-
- mbase = musb->mregs;
-
- spin_lock_irqsave(&musb->lock, flags);
- musb_ep_select(mbase, (u8) epnum);
-
- /* disable interrupts */
- int_txe = musb_readw(mbase, MUSB_INTRTXE);
- musb_writew(mbase, MUSB_INTRTXE, int_txe & ~(1 << epnum));
-
- if (musb_ep->is_in) {
- csr = musb_readw(epio, MUSB_TXCSR);
- if (csr & MUSB_TXCSR_FIFONOTEMPTY) {
- csr |= MUSB_TXCSR_FLUSHFIFO | MUSB_TXCSR_P_WZC_BITS;
- /*
- * Setting both TXPKTRDY and FLUSHFIFO makes controller
- * to interrupt current FIFO loading, but not flushing
- * the already loaded ones.
- */
- csr &= ~MUSB_TXCSR_TXPKTRDY;
- musb_writew(epio, MUSB_TXCSR, csr);
- /* REVISIT may be inappropriate w/o FIFONOTEMPTY ... */
- musb_writew(epio, MUSB_TXCSR, csr);
- }
- } else {
- csr = musb_readw(epio, MUSB_RXCSR);
- csr |= MUSB_RXCSR_FLUSHFIFO | MUSB_RXCSR_P_WZC_BITS;
- musb_writew(epio, MUSB_RXCSR, csr);
- musb_writew(epio, MUSB_RXCSR, csr);
- }
-
- /* re-enable interrupt */
- musb_writew(mbase, MUSB_INTRTXE, int_txe);
- spin_unlock_irqrestore(&musb->lock, flags);
-}
-
-static const struct usb_ep_ops musb_ep_ops = {
- .enable = musb_gadget_enable,
- .disable = musb_gadget_disable,
- .alloc_request = musb_alloc_request,
- .free_request = musb_free_request,
- .queue = musb_gadget_queue,
- .dequeue = musb_gadget_dequeue,
- .set_halt = musb_gadget_set_halt,
-#ifndef __UBOOT__
- .set_wedge = musb_gadget_set_wedge,
-#endif
- .fifo_status = musb_gadget_fifo_status,
- .fifo_flush = musb_gadget_fifo_flush
-};
-
-/* ----------------------------------------------------------------------- */
-
-static int musb_gadget_get_frame(struct usb_gadget *gadget)
-{
- struct musb *musb = gadget_to_musb(gadget);
-
- return (int)musb_readw(musb->mregs, MUSB_FRAME);
-}
-
-static int musb_gadget_wakeup(struct usb_gadget *gadget)
-{
-#ifndef __UBOOT__
- struct musb *musb = gadget_to_musb(gadget);
- void __iomem *mregs = musb->mregs;
- unsigned long flags;
- int status = -EINVAL;
- u8 power, devctl;
- int retries;
-
- spin_lock_irqsave(&musb->lock, flags);
-
- switch (musb->xceiv->state) {
- case OTG_STATE_B_PERIPHERAL:
- /* NOTE: OTG state machine doesn't include B_SUSPENDED;
- * that's part of the standard usb 1.1 state machine, and
- * doesn't affect OTG transitions.
- */
- if (musb->may_wakeup && musb->is_suspended)
- break;
- goto done;
- case OTG_STATE_B_IDLE:
- /* Start SRP ... OTG not required. */
- devctl = musb_readb(mregs, MUSB_DEVCTL);
- dev_dbg(musb->controller, "Sending SRP: devctl: %02x\n", devctl);
- devctl |= MUSB_DEVCTL_SESSION;
- musb_writeb(mregs, MUSB_DEVCTL, devctl);
- devctl = musb_readb(mregs, MUSB_DEVCTL);
- retries = 100;
- while (!(devctl & MUSB_DEVCTL_SESSION)) {
- devctl = musb_readb(mregs, MUSB_DEVCTL);
- if (retries-- < 1)
- break;
- }
- retries = 10000;
- while (devctl & MUSB_DEVCTL_SESSION) {
- devctl = musb_readb(mregs, MUSB_DEVCTL);
- if (retries-- < 1)
- break;
- }
-
- spin_unlock_irqrestore(&musb->lock, flags);
- otg_start_srp(musb->xceiv->otg);
- spin_lock_irqsave(&musb->lock, flags);
-
- /* Block idling for at least 1s */
- musb_platform_try_idle(musb,
- jiffies + msecs_to_jiffies(1 * HZ));
-
- status = 0;
- goto done;
- default:
- dev_dbg(musb->controller, "Unhandled wake: %s\n",
- otg_state_string(musb->xceiv->state));
- goto done;
- }
-
- status = 0;
-
- power = musb_readb(mregs, MUSB_POWER);
- power |= MUSB_POWER_RESUME;
- musb_writeb(mregs, MUSB_POWER, power);
- dev_dbg(musb->controller, "issue wakeup\n");
-
- /* FIXME do this next chunk in a timer callback, no udelay */
- mdelay(2);
-
- power = musb_readb(mregs, MUSB_POWER);
- power &= ~MUSB_POWER_RESUME;
- musb_writeb(mregs, MUSB_POWER, power);
-done:
- spin_unlock_irqrestore(&musb->lock, flags);
- return status;
-#else
- return 0;
-#endif
-}
-
-static int
-musb_gadget_set_self_powered(struct usb_gadget *gadget, int is_selfpowered)
-{
- struct musb *musb = gadget_to_musb(gadget);
-
- musb->is_self_powered = !!is_selfpowered;
- return 0;
-}
-
-static void musb_pullup(struct musb *musb, int is_on)
-{
- u8 power;
-
- power = musb_readb(musb->mregs, MUSB_POWER);
- if (is_on)
- power |= MUSB_POWER_SOFTCONN;
- else
- power &= ~MUSB_POWER_SOFTCONN;
-
- /* FIXME if on, HdrcStart; if off, HdrcStop */
-
- dev_dbg(musb->controller, "gadget D+ pullup %s\n",
- is_on ? "on" : "off");
- musb_writeb(musb->mregs, MUSB_POWER, power);
-}
-
-#if 0
-static int musb_gadget_vbus_session(struct usb_gadget *gadget, int is_active)
-{
- dev_dbg(musb->controller, "<= %s =>\n", __func__);
-
- /*
- * FIXME iff driver's softconnect flag is set (as it is during probe,
- * though that can clear it), just musb_pullup().
- */
-
- return -EINVAL;
-}
-#endif
-
-static int musb_gadget_vbus_draw(struct usb_gadget *gadget, unsigned mA)
-{
-#ifndef __UBOOT__
- struct musb *musb = gadget_to_musb(gadget);
-
- if (!musb->xceiv->set_power)
- return -EOPNOTSUPP;
- return usb_phy_set_power(musb->xceiv, mA);
-#else
- return 0;
-#endif
-}
-
-static int musb_gadget_pullup(struct usb_gadget *gadget, int is_on)
-{
- struct musb *musb = gadget_to_musb(gadget);
- unsigned long flags;
-
- is_on = !!is_on;
-
- pm_runtime_get_sync(musb->controller);
-
- /* NOTE: this assumes we are sensing vbus; we'd rather
- * not pullup unless the B-session is active.
- */
- spin_lock_irqsave(&musb->lock, flags);
- if (is_on != musb->softconnect) {
- musb->softconnect = is_on;
- musb_pullup(musb, is_on);
- }
- spin_unlock_irqrestore(&musb->lock, flags);
-
- pm_runtime_put(musb->controller);
-
- return 0;
-}
-
-#ifndef __UBOOT__
-static int musb_gadget_start(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
-static int musb_gadget_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
-#endif
-
-static const struct usb_gadget_ops musb_gadget_operations = {
- .get_frame = musb_gadget_get_frame,
- .wakeup = musb_gadget_wakeup,
- .set_selfpowered = musb_gadget_set_self_powered,
- /* .vbus_session = musb_gadget_vbus_session, */
- .vbus_draw = musb_gadget_vbus_draw,
- .pullup = musb_gadget_pullup,
-#ifndef __UBOOT__
- .udc_start = musb_gadget_start,
- .udc_stop = musb_gadget_stop,
-#endif
-};
-
-/* ----------------------------------------------------------------------- */
-
-/* Registration */
-
-/* Only this registration code "knows" the rule (from USB standards)
- * about there being only one external upstream port. It assumes
- * all peripheral ports are external...
- */
-
-#ifndef __UBOOT__
-static void musb_gadget_release(struct device *dev)
-{
- /* kref_put(WHAT) */
- dev_dbg(dev, "%s\n", __func__);
-}
-#endif
-
-
-static void __devinit
-init_peripheral_ep(struct musb *musb, struct musb_ep *ep, u8 epnum, int is_in)
-{
- struct musb_hw_ep *hw_ep = musb->endpoints + epnum;
-
- memset(ep, 0, sizeof *ep);
-
- ep->current_epnum = epnum;
- ep->musb = musb;
- ep->hw_ep = hw_ep;
- ep->is_in = is_in;
-
- INIT_LIST_HEAD(&ep->req_list);
-
- sprintf(ep->name, "ep%d%s", epnum,
- (!epnum || hw_ep->is_shared_fifo) ? "" : (
- is_in ? "in" : "out"));
- ep->end_point.name = ep->name;
- INIT_LIST_HEAD(&ep->end_point.ep_list);
- if (!epnum) {
- ep->end_point.maxpacket = 64;
- ep->end_point.ops = &musb_g_ep0_ops;
- musb->g.ep0 = &ep->end_point;
- } else {
- if (is_in)
- ep->end_point.maxpacket = hw_ep->max_packet_sz_tx;
- else
- ep->end_point.maxpacket = hw_ep->max_packet_sz_rx;
- ep->end_point.ops = &musb_ep_ops;
- list_add_tail(&ep->end_point.ep_list, &musb->g.ep_list);
- }
-}
-
-/*
- * Initialize the endpoints exposed to peripheral drivers, with backlinks
- * to the rest of the driver state.
- */
-static inline void __devinit musb_g_init_endpoints(struct musb *musb)
-{
- u8 epnum;
- struct musb_hw_ep *hw_ep;
- unsigned count = 0;
-
- /* initialize endpoint list just once */
- INIT_LIST_HEAD(&(musb->g.ep_list));
-
- for (epnum = 0, hw_ep = musb->endpoints;
- epnum < musb->nr_endpoints;
- epnum++, hw_ep++) {
- if (hw_ep->is_shared_fifo /* || !epnum */) {
- init_peripheral_ep(musb, &hw_ep->ep_in, epnum, 0);
- count++;
- } else {
- if (hw_ep->max_packet_sz_tx) {
- init_peripheral_ep(musb, &hw_ep->ep_in,
- epnum, 1);
- count++;
- }
- if (hw_ep->max_packet_sz_rx) {
- init_peripheral_ep(musb, &hw_ep->ep_out,
- epnum, 0);
- count++;
- }
- }
- }
-}
-
-/* called once during driver setup to initialize and link into
- * the driver model; memory is zeroed.
- */
-int __devinit musb_gadget_setup(struct musb *musb)
-{
- int status;
-
- /* REVISIT minor race: if (erroneously) setting up two
- * musb peripherals at the same time, only the bus lock
- * is probably held.
- */
-
- musb->g.ops = &musb_gadget_operations;
-#ifndef __UBOOT__
- musb->g.max_speed = USB_SPEED_HIGH;
-#endif
- musb->g.speed = USB_SPEED_UNKNOWN;
-
-#ifndef __UBOOT__
- /* this "gadget" abstracts/virtualizes the controller */
- dev_set_name(&musb->g.dev, "gadget");
- musb->g.dev.parent = musb->controller;
- musb->g.dev.dma_mask = musb->controller->dma_mask;
- musb->g.dev.release = musb_gadget_release;
-#endif
- musb->g.name = musb_driver_name;
-
-#ifndef __UBOOT__
- if (is_otg_enabled(musb))
- musb->g.is_otg = 1;
-#endif
-
- musb_g_init_endpoints(musb);
-
- musb->is_active = 0;
- musb_platform_try_idle(musb, 0);
-
-#ifndef __UBOOT__
- status = device_register(&musb->g.dev);
- if (status != 0) {
- put_device(&musb->g.dev);
- return status;
- }
- status = usb_add_gadget_udc(musb->controller, &musb->g);
- if (status)
- goto err;
-#endif
-
- return 0;
-#ifndef __UBOOT__
-err:
- musb->g.dev.parent = NULL;
- device_unregister(&musb->g.dev);
- return status;
-#endif
-}
-
-void musb_gadget_cleanup(struct musb *musb)
-{
-#ifndef __UBOOT__
- usb_del_gadget_udc(&musb->g);
- if (musb->g.dev.parent)
- device_unregister(&musb->g.dev);
-#endif
-}
-
-/*
- * Register the gadget driver. Used by gadget drivers when
- * registering themselves with the controller.
- *
- * -EINVAL something went wrong (not driver)
- * -EBUSY another gadget is already using the controller
- * -ENOMEM no memory to perform the operation
- *
- * @param driver the gadget driver
- * @return <0 if error, 0 if everything is fine
- */
-#ifndef __UBOOT__
-static int musb_gadget_start(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
-#else
-int musb_gadget_start(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
-#endif
-{
- struct musb *musb = gadget_to_musb(g);
-#ifndef __UBOOT__
- struct usb_otg *otg = musb->xceiv->otg;
-#endif
- unsigned long flags;
- int retval = -EINVAL;
-
-#ifndef __UBOOT__
- if (driver->max_speed < USB_SPEED_HIGH)
- goto err0;
-#endif
-
- pm_runtime_get_sync(musb->controller);
-
-#ifndef __UBOOT__
- dev_dbg(musb->controller, "registering driver %s\n", driver->function);
-#endif
-
- musb->softconnect = 0;
- musb->gadget_driver = driver;
-
- spin_lock_irqsave(&musb->lock, flags);
- musb->is_active = 1;
-
-#ifndef __UBOOT__
- otg_set_peripheral(otg, &musb->g);
- musb->xceiv->state = OTG_STATE_B_IDLE;
-
- /*
- * FIXME this ignores the softconnect flag. Drivers are
- * allowed hold the peripheral inactive until for example
- * userspace hooks up printer hardware or DSP codecs, so
- * hosts only see fully functional devices.
- */
-
- if (!is_otg_enabled(musb))
-#endif
- musb_start(musb);
-
- spin_unlock_irqrestore(&musb->lock, flags);
-
-#ifndef __UBOOT__
- if (is_otg_enabled(musb)) {
- struct usb_hcd *hcd = musb_to_hcd(musb);
-
- dev_dbg(musb->controller, "OTG startup...\n");
-
- /* REVISIT: funcall to other code, which also
- * handles power budgeting ... this way also
- * ensures HdrcStart is indirectly called.
- */
- retval = usb_add_hcd(musb_to_hcd(musb), 0, 0);
- if (retval < 0) {
- dev_dbg(musb->controller, "add_hcd failed, %d\n", retval);
- goto err2;
- }
-
- if ((musb->xceiv->last_event == USB_EVENT_ID)
- && otg->set_vbus)
- otg_set_vbus(otg, 1);
-
- hcd->self.uses_pio_for_control = 1;
- }
- if (musb->xceiv->last_event == USB_EVENT_NONE)
- pm_runtime_put(musb->controller);
-#endif
-
- return 0;
-
-#ifndef __UBOOT__
-err2:
- if (!is_otg_enabled(musb))
- musb_stop(musb);
-err0:
- return retval;
-#endif
-}
-
-#ifndef __UBOOT__
-static void stop_activity(struct musb *musb, struct usb_gadget_driver *driver)
-{
- int i;
- struct musb_hw_ep *hw_ep;
-
- /* don't disconnect if it's not connected */
- if (musb->g.speed == USB_SPEED_UNKNOWN)
- driver = NULL;
- else
- musb->g.speed = USB_SPEED_UNKNOWN;
-
- /* deactivate the hardware */
- if (musb->softconnect) {
- musb->softconnect = 0;
- musb_pullup(musb, 0);
- }
- musb_stop(musb);
-
- /* killing any outstanding requests will quiesce the driver;
- * then report disconnect
- */
- if (driver) {
- for (i = 0, hw_ep = musb->endpoints;
- i < musb->nr_endpoints;
- i++, hw_ep++) {
- musb_ep_select(musb->mregs, i);
- if (hw_ep->is_shared_fifo /* || !epnum */) {
- nuke(&hw_ep->ep_in, -ESHUTDOWN);
- } else {
- if (hw_ep->max_packet_sz_tx)
- nuke(&hw_ep->ep_in, -ESHUTDOWN);
- if (hw_ep->max_packet_sz_rx)
- nuke(&hw_ep->ep_out, -ESHUTDOWN);
- }
- }
- }
-}
-
-/*
- * Unregister the gadget driver. Used by gadget drivers when
- * unregistering themselves from the controller.
- *
- * @param driver the gadget driver to unregister
- */
-static int musb_gadget_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
-{
- struct musb *musb = gadget_to_musb(g);
- unsigned long flags;
-
- if (musb->xceiv->last_event == USB_EVENT_NONE)
- pm_runtime_get_sync(musb->controller);
-
- /*
- * REVISIT always use otg_set_peripheral() here too;
- * this needs to shut down the OTG engine.
- */
-
- spin_lock_irqsave(&musb->lock, flags);
-
- musb_hnp_stop(musb);
-
- (void) musb_gadget_vbus_draw(&musb->g, 0);
-
- musb->xceiv->state = OTG_STATE_UNDEFINED;
- stop_activity(musb, driver);
- otg_set_peripheral(musb->xceiv->otg, NULL);
-
- dev_dbg(musb->controller, "unregistering driver %s\n", driver->function);
-
- musb->is_active = 0;
- musb_platform_try_idle(musb, 0);
- spin_unlock_irqrestore(&musb->lock, flags);
-
- if (is_otg_enabled(musb)) {
- usb_remove_hcd(musb_to_hcd(musb));
- /* FIXME we need to be able to register another
- * gadget driver here and have everything work;
- * that currently misbehaves.
- */
- }
-
- if (!is_otg_enabled(musb))
- musb_stop(musb);
-
- pm_runtime_put(musb->controller);
-
- return 0;
-}
-#endif
-
-/* ----------------------------------------------------------------------- */
-
-/* lifecycle operations called through plat_uds.c */
-
-void musb_g_resume(struct musb *musb)
-{
-#ifndef __UBOOT__
- musb->is_suspended = 0;
- switch (musb->xceiv->state) {
- case OTG_STATE_B_IDLE:
- break;
- case OTG_STATE_B_WAIT_ACON:
- case OTG_STATE_B_PERIPHERAL:
- musb->is_active = 1;
- if (musb->gadget_driver && musb->gadget_driver->resume) {
- spin_unlock(&musb->lock);
- musb->gadget_driver->resume(&musb->g);
- spin_lock(&musb->lock);
- }
- break;
- default:
- WARNING("unhandled RESUME transition (%s)\n",
- otg_state_string(musb->xceiv->state));
- }
-#endif
-}
-
-/* called when SOF packets stop for 3+ msec */
-void musb_g_suspend(struct musb *musb)
-{
-#ifndef __UBOOT__
- u8 devctl;
-
- devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
- dev_dbg(musb->controller, "devctl %02x\n", devctl);
-
- switch (musb->xceiv->state) {
- case OTG_STATE_B_IDLE:
- if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS)
- musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
- break;
- case OTG_STATE_B_PERIPHERAL:
- musb->is_suspended = 1;
- if (musb->gadget_driver && musb->gadget_driver->suspend) {
- spin_unlock(&musb->lock);
- musb->gadget_driver->suspend(&musb->g);
- spin_lock(&musb->lock);
- }
- break;
- default:
- /* REVISIT if B_HOST, clear DEVCTL.HOSTREQ;
- * A_PERIPHERAL may need care too
- */
- WARNING("unhandled SUSPEND transition (%s)\n",
- otg_state_string(musb->xceiv->state));
- }
-#endif
-}
-
-/* Called during SRP */
-void musb_g_wakeup(struct musb *musb)
-{
- musb_gadget_wakeup(&musb->g);
-}
-
-/* called when VBUS drops below session threshold, and in other cases */
-void musb_g_disconnect(struct musb *musb)
-{
- void __iomem *mregs = musb->mregs;
- u8 devctl = musb_readb(mregs, MUSB_DEVCTL);
-
- dev_dbg(musb->controller, "devctl %02x\n", devctl);
-
- /* clear HR */
- musb_writeb(mregs, MUSB_DEVCTL, devctl & MUSB_DEVCTL_SESSION);
-
- /* don't draw vbus until new b-default session */
- (void) musb_gadget_vbus_draw(&musb->g, 0);
-
- musb->g.speed = USB_SPEED_UNKNOWN;
- if (musb->gadget_driver && musb->gadget_driver->disconnect) {
- spin_unlock(&musb->lock);
- musb->gadget_driver->disconnect(&musb->g);
- spin_lock(&musb->lock);
- }
-
-#ifndef __UBOOT__
- switch (musb->xceiv->state) {
- default:
- dev_dbg(musb->controller, "Unhandled disconnect %s, setting a_idle\n",
- otg_state_string(musb->xceiv->state));
- musb->xceiv->state = OTG_STATE_A_IDLE;
- MUSB_HST_MODE(musb);
- break;
- case OTG_STATE_A_PERIPHERAL:
- musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
- MUSB_HST_MODE(musb);
- break;
- case OTG_STATE_B_WAIT_ACON:
- case OTG_STATE_B_HOST:
- case OTG_STATE_B_PERIPHERAL:
- case OTG_STATE_B_IDLE:
- musb->xceiv->state = OTG_STATE_B_IDLE;
- break;
- case OTG_STATE_B_SRP_INIT:
- break;
- }
-#endif
-
- musb->is_active = 0;
-}
-
-void musb_g_reset(struct musb *musb)
-__releases(musb->lock)
-__acquires(musb->lock)
-{
- void __iomem *mbase = musb->mregs;
- u8 devctl = musb_readb(mbase, MUSB_DEVCTL);
- u8 power;
-
-#ifndef __UBOOT__
- dev_dbg(musb->controller, "<== %s addr=%x driver '%s'\n",
- (devctl & MUSB_DEVCTL_BDEVICE)
- ? "B-Device" : "A-Device",
- musb_readb(mbase, MUSB_FADDR),
- musb->gadget_driver
- ? musb->gadget_driver->driver.name
- : NULL
- );
-#endif
-
- /* report disconnect, if we didn't already (flushing EP state) */
- if (musb->g.speed != USB_SPEED_UNKNOWN)
- musb_g_disconnect(musb);
-
- /* clear HR */
- else if (devctl & MUSB_DEVCTL_HR)
- musb_writeb(mbase, MUSB_DEVCTL, MUSB_DEVCTL_SESSION);
-
-
- /* what speed did we negotiate? */
- power = musb_readb(mbase, MUSB_POWER);
- musb->g.speed = (power & MUSB_POWER_HSMODE)
- ? USB_SPEED_HIGH : USB_SPEED_FULL;
-
- /* start in USB_STATE_DEFAULT */
- musb->is_active = 1;
- musb->is_suspended = 0;
- MUSB_DEV_MODE(musb);
- musb->address = 0;
- musb->ep0_state = MUSB_EP0_STAGE_SETUP;
-
- musb->may_wakeup = 0;
- musb->g.b_hnp_enable = 0;
- musb->g.a_alt_hnp_support = 0;
- musb->g.a_hnp_support = 0;
-
-#ifndef __UBOOT__
- /* Normal reset, as B-Device;
- * or else after HNP, as A-Device
- */
- if (devctl & MUSB_DEVCTL_BDEVICE) {
- musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
- musb->g.is_a_peripheral = 0;
- } else if (is_otg_enabled(musb)) {
- musb->xceiv->state = OTG_STATE_A_PERIPHERAL;
- musb->g.is_a_peripheral = 1;
- } else
- WARN_ON(1);
-
- /* start with default limits on VBUS power draw */
- (void) musb_gadget_vbus_draw(&musb->g,
- is_otg_enabled(musb) ? 8 : 100);
-#endif
-}
diff --git a/drivers/usb/musb/musb_gadget.h b/drivers/usb/musb/musb_gadget.h
deleted file mode 100644
index 392f701..0000000
--- a/drivers/usb/musb/musb_gadget.h
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * MUSB OTG driver peripheral defines
- *
- * Copyright 2005 Mentor Graphics Corporation
- * Copyright (C) 2005-2006 by Texas Instruments
- * Copyright (C) 2006-2007 Nokia Corporation
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#ifndef __MUSB_GADGET_H
-#define __MUSB_GADGET_H
-
-#include <linux/list.h>
-#ifdef __UBOOT__
-#include <asm/byteorder.h>
-#include <asm/errno.h>
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-#endif
-
-enum buffer_map_state {
- UN_MAPPED = 0,
- PRE_MAPPED,
- MUSB_MAPPED
-};
-
-struct musb_request {
- struct usb_request request;
- struct list_head list;
- struct musb_ep *ep;
- struct musb *musb;
- u8 tx; /* endpoint direction */
- u8 epnum;
- enum buffer_map_state map_state;
-};
-
-static inline struct musb_request *to_musb_request(struct usb_request *req)
-{
- return req ? container_of(req, struct musb_request, request) : NULL;
-}
-
-extern struct usb_request *
-musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags);
-extern void musb_free_request(struct usb_ep *ep, struct usb_request *req);
-
-
-/*
- * struct musb_ep - peripheral side view of endpoint rx or tx side
- */
-struct musb_ep {
- /* stuff towards the head is basically write-once. */
- struct usb_ep end_point;
- char name[12];
- struct musb_hw_ep *hw_ep;
- struct musb *musb;
- u8 current_epnum;
-
- /* ... when enabled/disabled ... */
- u8 type;
- u8 is_in;
- u16 packet_sz;
- const struct usb_endpoint_descriptor *desc;
- struct dma_channel *dma;
-
- /* later things are modified based on usage */
- struct list_head req_list;
-
- u8 wedged;
-
- /* true if lock must be dropped but req_list may not be advanced */
- u8 busy;
-
- u8 hb_mult;
-};
-
-static inline struct musb_ep *to_musb_ep(struct usb_ep *ep)
-{
- return ep ? container_of(ep, struct musb_ep, end_point) : NULL;
-}
-
-static inline struct musb_request *next_request(struct musb_ep *ep)
-{
- struct list_head *queue = &ep->req_list;
-
- if (list_empty(queue))
- return NULL;
- return container_of(queue->next, struct musb_request, list);
-}
-
-extern void musb_g_tx(struct musb *musb, u8 epnum);
-extern void musb_g_rx(struct musb *musb, u8 epnum);
-
-extern const struct usb_ep_ops musb_g_ep0_ops;
-
-extern int musb_gadget_setup(struct musb *);
-extern void musb_gadget_cleanup(struct musb *);
-
-extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int);
-
-extern void musb_ep_restart(struct musb *, struct musb_request *);
-
-#ifdef __UBOOT__
-int musb_gadget_start(struct usb_gadget *g, struct usb_gadget_driver *driver);
-#endif
-#endif /* __MUSB_GADGET_H */
diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c
deleted file mode 100644
index 6599d38..0000000
--- a/drivers/usb/musb/musb_gadget_ep0.c
+++ /dev/null
@@ -1,1089 +0,0 @@
-/*
- * MUSB OTG peripheral driver ep0 handling
- *
- * Copyright 2005 Mentor Graphics Corporation
- * Copyright (C) 2005-2006 by Texas Instruments
- * Copyright (C) 2006-2007 Nokia Corporation
- * Copyright (C) 2008-2009 MontaVista Software, Inc. <source@mvista.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#define __UBOOT__
-#ifndef __UBOOT__
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/timer.h>
-#include <linux/spinlock.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#else
-#include <common.h>
-#include "linux-compat.h"
-#endif
-
-#include "musb_core.h"
-
-/* ep0 is always musb->endpoints[0].ep_in */
-#define next_ep0_request(musb) next_in_request(&(musb)->endpoints[0])
-
-/*
- * locking note: we use only the controller lock, for simpler correctness.
- * It's always held with IRQs blocked.
- *
- * It protects the ep0 request queue as well as ep0_state, not just the
- * controller and indexed registers. And that lock stays held unless it
- * needs to be dropped to allow reentering this driver ... like upcalls to
- * the gadget driver, or adjusting endpoint halt status.
- */
-
-static char *decode_ep0stage(u8 stage)
-{
- switch (stage) {
- case MUSB_EP0_STAGE_IDLE: return "idle";
- case MUSB_EP0_STAGE_SETUP: return "setup";
- case MUSB_EP0_STAGE_TX: return "in";
- case MUSB_EP0_STAGE_RX: return "out";
- case MUSB_EP0_STAGE_ACKWAIT: return "wait";
- case MUSB_EP0_STAGE_STATUSIN: return "in/status";
- case MUSB_EP0_STAGE_STATUSOUT: return "out/status";
- default: return "?";
- }
-}
-
-/* handle a standard GET_STATUS request
- * Context: caller holds controller lock
- */
-static int service_tx_status_request(
- struct musb *musb,
- const struct usb_ctrlrequest *ctrlrequest)
-{
- void __iomem *mbase = musb->mregs;
- int handled = 1;
- u8 result[2], epnum = 0;
- const u8 recip = ctrlrequest->bRequestType & USB_RECIP_MASK;
-
- result[1] = 0;
-
- switch (recip) {
- case USB_RECIP_DEVICE:
- result[0] = musb->is_self_powered << USB_DEVICE_SELF_POWERED;
- result[0] |= musb->may_wakeup << USB_DEVICE_REMOTE_WAKEUP;
- if (musb->g.is_otg) {
- result[0] |= musb->g.b_hnp_enable
- << USB_DEVICE_B_HNP_ENABLE;
- result[0] |= musb->g.a_alt_hnp_support
- << USB_DEVICE_A_ALT_HNP_SUPPORT;
- result[0] |= musb->g.a_hnp_support
- << USB_DEVICE_A_HNP_SUPPORT;
- }
- break;
-
- case USB_RECIP_INTERFACE:
- result[0] = 0;
- break;
-
- case USB_RECIP_ENDPOINT: {
- int is_in;
- struct musb_ep *ep;
- u16 tmp;
- void __iomem *regs;
-
- epnum = (u8) ctrlrequest->wIndex;
- if (!epnum) {
- result[0] = 0;
- break;
- }
-
- is_in = epnum & USB_DIR_IN;
- if (is_in) {
- epnum &= 0x0f;
- ep = &musb->endpoints[epnum].ep_in;
- } else {
- ep = &musb->endpoints[epnum].ep_out;
- }
- regs = musb->endpoints[epnum].regs;
-
- if (epnum >= MUSB_C_NUM_EPS || !ep->desc) {
- handled = -EINVAL;
- break;
- }
-
- musb_ep_select(mbase, epnum);
- if (is_in)
- tmp = musb_readw(regs, MUSB_TXCSR)
- & MUSB_TXCSR_P_SENDSTALL;
- else
- tmp = musb_readw(regs, MUSB_RXCSR)
- & MUSB_RXCSR_P_SENDSTALL;
- musb_ep_select(mbase, 0);
-
- result[0] = tmp ? 1 : 0;
- } break;
-
- default:
- /* class, vendor, etc ... delegate */
- handled = 0;
- break;
- }
-
- /* fill up the fifo; caller updates csr0 */
- if (handled > 0) {
- u16 len = le16_to_cpu(ctrlrequest->wLength);
-
- if (len > 2)
- len = 2;
- musb_write_fifo(&musb->endpoints[0], len, result);
- }
-
- return handled;
-}
-
-/*
- * handle a control-IN request, the end0 buffer contains the current request
- * that is supposed to be a standard control request. Assumes the fifo to
- * be at least 2 bytes long.
- *
- * @return 0 if the request was NOT HANDLED,
- * < 0 when error
- * > 0 when the request is processed
- *
- * Context: caller holds controller lock
- */
-static int
-service_in_request(struct musb *musb, const struct usb_ctrlrequest *ctrlrequest)
-{
- int handled = 0; /* not handled */
-
- if ((ctrlrequest->bRequestType & USB_TYPE_MASK)
- == USB_TYPE_STANDARD) {
- switch (ctrlrequest->bRequest) {
- case USB_REQ_GET_STATUS:
- handled = service_tx_status_request(musb,
- ctrlrequest);
- break;
-
- /* case USB_REQ_SYNC_FRAME: */
-
- default:
- break;
- }
- }
- return handled;
-}
-
-/*
- * Context: caller holds controller lock
- */
-static void musb_g_ep0_giveback(struct musb *musb, struct usb_request *req)
-{
- musb_g_giveback(&musb->endpoints[0].ep_in, req, 0);
-}
-
-/*
- * Tries to start B-device HNP negotiation if enabled via sysfs
- */
-static inline void musb_try_b_hnp_enable(struct musb *musb)
-{
- void __iomem *mbase = musb->mregs;
- u8 devctl;
-
- dev_dbg(musb->controller, "HNP: Setting HR\n");
- devctl = musb_readb(mbase, MUSB_DEVCTL);
- musb_writeb(mbase, MUSB_DEVCTL, devctl | MUSB_DEVCTL_HR);
-}
-
-/*
- * Handle all control requests with no DATA stage, including standard
- * requests such as:
- * USB_REQ_SET_CONFIGURATION, USB_REQ_SET_INTERFACE, unrecognized
- * always delegated to the gadget driver
- * USB_REQ_SET_ADDRESS, USB_REQ_CLEAR_FEATURE, USB_REQ_SET_FEATURE
- * always handled here, except for class/vendor/... features
- *
- * Context: caller holds controller lock
- */
-static int
-service_zero_data_request(struct musb *musb,
- struct usb_ctrlrequest *ctrlrequest)
-__releases(musb->lock)
-__acquires(musb->lock)
-{
- int handled = -EINVAL;
- void __iomem *mbase = musb->mregs;
- const u8 recip = ctrlrequest->bRequestType & USB_RECIP_MASK;
-
- /* the gadget driver handles everything except what we MUST handle */
- if ((ctrlrequest->bRequestType & USB_TYPE_MASK)
- == USB_TYPE_STANDARD) {
- switch (ctrlrequest->bRequest) {
- case USB_REQ_SET_ADDRESS:
- /* change it after the status stage */
- musb->set_address = true;
- musb->address = (u8) (ctrlrequest->wValue & 0x7f);
- handled = 1;
- break;
-
- case USB_REQ_CLEAR_FEATURE:
- switch (recip) {
- case USB_RECIP_DEVICE:
- if (ctrlrequest->wValue
- != USB_DEVICE_REMOTE_WAKEUP)
- break;
- musb->may_wakeup = 0;
- handled = 1;
- break;
- case USB_RECIP_INTERFACE:
- break;
- case USB_RECIP_ENDPOINT:{
- const u8 epnum =
- ctrlrequest->wIndex & 0x0f;
- struct musb_ep *musb_ep;
- struct musb_hw_ep *ep;
- struct musb_request *request;
- void __iomem *regs;
- int is_in;
- u16 csr;
-
- if (epnum == 0 || epnum >= MUSB_C_NUM_EPS ||
- ctrlrequest->wValue != USB_ENDPOINT_HALT)
- break;
-
- ep = musb->endpoints + epnum;
- regs = ep->regs;
- is_in = ctrlrequest->wIndex & USB_DIR_IN;
- if (is_in)
- musb_ep = &ep->ep_in;
- else
- musb_ep = &ep->ep_out;
- if (!musb_ep->desc)
- break;
-
- handled = 1;
- /* Ignore request if endpoint is wedged */
- if (musb_ep->wedged)
- break;
-
- musb_ep_select(mbase, epnum);
- if (is_in) {
- csr = musb_readw(regs, MUSB_TXCSR);
- csr |= MUSB_TXCSR_CLRDATATOG |
- MUSB_TXCSR_P_WZC_BITS;
- csr &= ~(MUSB_TXCSR_P_SENDSTALL |
- MUSB_TXCSR_P_SENTSTALL |
- MUSB_TXCSR_TXPKTRDY);
- musb_writew(regs, MUSB_TXCSR, csr);
- } else {
- csr = musb_readw(regs, MUSB_RXCSR);
- csr |= MUSB_RXCSR_CLRDATATOG |
- MUSB_RXCSR_P_WZC_BITS;
- csr &= ~(MUSB_RXCSR_P_SENDSTALL |
- MUSB_RXCSR_P_SENTSTALL);
- musb_writew(regs, MUSB_RXCSR, csr);
- }
-
- /* Maybe start the first request in the queue */
- request = next_request(musb_ep);
- if (!musb_ep->busy && request) {
- dev_dbg(musb->controller, "restarting the request\n");
- musb_ep_restart(musb, request);
- }
-
- /* select ep0 again */
- musb_ep_select(mbase, 0);
- } break;
- default:
- /* class, vendor, etc ... delegate */
- handled = 0;
- break;
- }
- break;
-
- case USB_REQ_SET_FEATURE:
- switch (recip) {
- case USB_RECIP_DEVICE:
- handled = 1;
- switch (ctrlrequest->wValue) {
- case USB_DEVICE_REMOTE_WAKEUP:
- musb->may_wakeup = 1;
- break;
- case USB_DEVICE_TEST_MODE:
- if (musb->g.speed != USB_SPEED_HIGH)
- goto stall;
- if (ctrlrequest->wIndex & 0xff)
- goto stall;
-
- switch (ctrlrequest->wIndex >> 8) {
- case 1:
- pr_debug("TEST_J\n");
- /* TEST_J */
- musb->test_mode_nr =
- MUSB_TEST_J;
- break;
- case 2:
- /* TEST_K */
- pr_debug("TEST_K\n");
- musb->test_mode_nr =
- MUSB_TEST_K;
- break;
- case 3:
- /* TEST_SE0_NAK */
- pr_debug("TEST_SE0_NAK\n");
- musb->test_mode_nr =
- MUSB_TEST_SE0_NAK;
- break;
- case 4:
- /* TEST_PACKET */
- pr_debug("TEST_PACKET\n");
- musb->test_mode_nr =
- MUSB_TEST_PACKET;
- break;
-
- case 0xc0:
- /* TEST_FORCE_HS */
- pr_debug("TEST_FORCE_HS\n");
- musb->test_mode_nr =
- MUSB_TEST_FORCE_HS;
- break;
- case 0xc1:
- /* TEST_FORCE_FS */
- pr_debug("TEST_FORCE_FS\n");
- musb->test_mode_nr =
- MUSB_TEST_FORCE_FS;
- break;
- case 0xc2:
- /* TEST_FIFO_ACCESS */
- pr_debug("TEST_FIFO_ACCESS\n");
- musb->test_mode_nr =
- MUSB_TEST_FIFO_ACCESS;
- break;
- case 0xc3:
- /* TEST_FORCE_HOST */
- pr_debug("TEST_FORCE_HOST\n");
- musb->test_mode_nr =
- MUSB_TEST_FORCE_HOST;
- break;
- default:
- goto stall;
- }
-
- /* enter test mode after irq */
- if (handled > 0)
- musb->test_mode = true;
- break;
- case USB_DEVICE_B_HNP_ENABLE:
- if (!musb->g.is_otg)
- goto stall;
- musb->g.b_hnp_enable = 1;
- musb_try_b_hnp_enable(musb);
- break;
- case USB_DEVICE_A_HNP_SUPPORT:
- if (!musb->g.is_otg)
- goto stall;
- musb->g.a_hnp_support = 1;
- break;
- case USB_DEVICE_A_ALT_HNP_SUPPORT:
- if (!musb->g.is_otg)
- goto stall;
- musb->g.a_alt_hnp_support = 1;
- break;
- case USB_DEVICE_DEBUG_MODE:
- handled = 0;
- break;
-stall:
- default:
- handled = -EINVAL;
- break;
- }
- break;
-
- case USB_RECIP_INTERFACE:
- break;
-
- case USB_RECIP_ENDPOINT:{
- const u8 epnum =
- ctrlrequest->wIndex & 0x0f;
- struct musb_ep *musb_ep;
- struct musb_hw_ep *ep;
- void __iomem *regs;
- int is_in;
- u16 csr;
-
- if (epnum == 0 || epnum >= MUSB_C_NUM_EPS ||
- ctrlrequest->wValue != USB_ENDPOINT_HALT)
- break;
-
- ep = musb->endpoints + epnum;
- regs = ep->regs;
- is_in = ctrlrequest->wIndex & USB_DIR_IN;
- if (is_in)
- musb_ep = &ep->ep_in;
- else
- musb_ep = &ep->ep_out;
- if (!musb_ep->desc)
- break;
-
- musb_ep_select(mbase, epnum);
- if (is_in) {
- csr = musb_readw(regs, MUSB_TXCSR);
- if (csr & MUSB_TXCSR_FIFONOTEMPTY)
- csr |= MUSB_TXCSR_FLUSHFIFO;
- csr |= MUSB_TXCSR_P_SENDSTALL
- | MUSB_TXCSR_CLRDATATOG
- | MUSB_TXCSR_P_WZC_BITS;
- musb_writew(regs, MUSB_TXCSR, csr);
- } else {
- csr = musb_readw(regs, MUSB_RXCSR);
- csr |= MUSB_RXCSR_P_SENDSTALL
- | MUSB_RXCSR_FLUSHFIFO
- | MUSB_RXCSR_CLRDATATOG
- | MUSB_RXCSR_P_WZC_BITS;
- musb_writew(regs, MUSB_RXCSR, csr);
- }
-
- /* select ep0 again */
- musb_ep_select(mbase, 0);
- handled = 1;
- } break;
-
- default:
- /* class, vendor, etc ... delegate */
- handled = 0;
- break;
- }
- break;
- default:
- /* delegate SET_CONFIGURATION, etc */
- handled = 0;
- }
- } else
- handled = 0;
- return handled;
-}
-
-/* we have an ep0out data packet
- * Context: caller holds controller lock
- */
-static void ep0_rxstate(struct musb *musb)
-{
- void __iomem *regs = musb->control_ep->regs;
- struct musb_request *request;
- struct usb_request *req;
- u16 count, csr;
-
- request = next_ep0_request(musb);
- req = &request->request;
-
- /* read packet and ack; or stall because of gadget driver bug:
- * should have provided the rx buffer before setup() returned.
- */
- if (req) {
- void *buf = req->buf + req->actual;
- unsigned len = req->length - req->actual;
-
- /* read the buffer */
- count = musb_readb(regs, MUSB_COUNT0);
- if (count > len) {
- req->status = -EOVERFLOW;
- count = len;
- }
- musb_read_fifo(&musb->endpoints[0], count, buf);
- req->actual += count;
- csr = MUSB_CSR0_P_SVDRXPKTRDY;
- if (count < 64 || req->actual == req->length) {
- musb->ep0_state = MUSB_EP0_STAGE_STATUSIN;
- csr |= MUSB_CSR0_P_DATAEND;
- } else
- req = NULL;
- } else
- csr = MUSB_CSR0_P_SVDRXPKTRDY | MUSB_CSR0_P_SENDSTALL;
-
-
- /* Completion handler may choose to stall, e.g. because the
- * message just received holds invalid data.
- */
- if (req) {
- musb->ackpend = csr;
- musb_g_ep0_giveback(musb, req);
- if (!musb->ackpend)
- return;
- musb->ackpend = 0;
- }
- musb_ep_select(musb->mregs, 0);
- musb_writew(regs, MUSB_CSR0, csr);
-}
-
-/*
- * transmitting to the host (IN), this code might be called from IRQ
- * and from kernel thread.
- *
- * Context: caller holds controller lock
- */
-static void ep0_txstate(struct musb *musb)
-{
- void __iomem *regs = musb->control_ep->regs;
- struct musb_request *req = next_ep0_request(musb);
- struct usb_request *request;
- u16 csr = MUSB_CSR0_TXPKTRDY;
- u8 *fifo_src;
- u8 fifo_count;
-
- if (!req) {
- /* WARN_ON(1); */
- dev_dbg(musb->controller, "odd; csr0 %04x\n", musb_readw(regs, MUSB_CSR0));
- return;
- }
-
- request = &req->request;
-
- /* load the data */
- fifo_src = (u8 *) request->buf + request->actual;
- fifo_count = min((unsigned) MUSB_EP0_FIFOSIZE,
- request->length - request->actual);
- musb_write_fifo(&musb->endpoints[0], fifo_count, fifo_src);
- request->actual += fifo_count;
-
- /* update the flags */
- if (fifo_count < MUSB_MAX_END0_PACKET
- || (request->actual == request->length
- && !request->zero)) {
- musb->ep0_state = MUSB_EP0_STAGE_STATUSOUT;
- csr |= MUSB_CSR0_P_DATAEND;
- } else
- request = NULL;
-
- /* report completions as soon as the fifo's loaded; there's no
- * win in waiting till this last packet gets acked. (other than
- * very precise fault reporting, needed by USB TMC; possible with
- * this hardware, but not usable from portable gadget drivers.)
- */
- if (request) {
- musb->ackpend = csr;
- musb_g_ep0_giveback(musb, request);
- if (!musb->ackpend)
- return;
- musb->ackpend = 0;
- }
-
- /* send it out, triggering a "txpktrdy cleared" irq */
- musb_ep_select(musb->mregs, 0);
- musb_writew(regs, MUSB_CSR0, csr);
-}
-
-/*
- * Read a SETUP packet (struct usb_ctrlrequest) from the hardware.
- * Fields are left in USB byte-order.
- *
- * Context: caller holds controller lock.
- */
-static void
-musb_read_setup(struct musb *musb, struct usb_ctrlrequest *req)
-{
- struct musb_request *r;
- void __iomem *regs = musb->control_ep->regs;
-
- musb_read_fifo(&musb->endpoints[0], sizeof *req, (u8 *)req);
-
- /* NOTE: earlier 2.6 versions changed setup packets to host
- * order, but now USB packets always stay in USB byte order.
- */
- dev_dbg(musb->controller, "SETUP req%02x.%02x v%04x i%04x l%d\n",
- req->bRequestType,
- req->bRequest,
- le16_to_cpu(req->wValue),
- le16_to_cpu(req->wIndex),
- le16_to_cpu(req->wLength));
-
- /* clean up any leftover transfers */
- r = next_ep0_request(musb);
- if (r)
- musb_g_ep0_giveback(musb, &r->request);
-
- /* For zero-data requests we want to delay the STATUS stage to
- * avoid SETUPEND errors. If we read data (OUT), delay accepting
- * packets until there's a buffer to store them in.
- *
- * If we write data, the controller acts happier if we enable
- * the TX FIFO right away, and give the controller a moment
- * to switch modes...
- */
- musb->set_address = false;
- musb->ackpend = MUSB_CSR0_P_SVDRXPKTRDY;
- if (req->wLength == 0) {
- if (req->bRequestType & USB_DIR_IN)
- musb->ackpend |= MUSB_CSR0_TXPKTRDY;
- musb->ep0_state = MUSB_EP0_STAGE_ACKWAIT;
- } else if (req->bRequestType & USB_DIR_IN) {
- musb->ep0_state = MUSB_EP0_STAGE_TX;
- musb_writew(regs, MUSB_CSR0, MUSB_CSR0_P_SVDRXPKTRDY);
- while ((musb_readw(regs, MUSB_CSR0)
- & MUSB_CSR0_RXPKTRDY) != 0)
- cpu_relax();
- musb->ackpend = 0;
- } else
- musb->ep0_state = MUSB_EP0_STAGE_RX;
-}
-
-static int
-forward_to_driver(struct musb *musb, const struct usb_ctrlrequest *ctrlrequest)
-__releases(musb->lock)
-__acquires(musb->lock)
-{
- int retval;
- if (!musb->gadget_driver)
- return -EOPNOTSUPP;
- spin_unlock(&musb->lock);
- retval = musb->gadget_driver->setup(&musb->g, ctrlrequest);
- spin_lock(&musb->lock);
- return retval;
-}
-
-/*
- * Handle peripheral ep0 interrupt
- *
- * Context: irq handler; we won't re-enter the driver that way.
- */
-irqreturn_t musb_g_ep0_irq(struct musb *musb)
-{
- u16 csr;
- u16 len;
- void __iomem *mbase = musb->mregs;
- void __iomem *regs = musb->endpoints[0].regs;
- irqreturn_t retval = IRQ_NONE;
-
- musb_ep_select(mbase, 0); /* select ep0 */
- csr = musb_readw(regs, MUSB_CSR0);
- len = musb_readb(regs, MUSB_COUNT0);
-
- dev_dbg(musb->controller, "csr %04x, count %d, myaddr %d, ep0stage %s\n",
- csr, len,
- musb_readb(mbase, MUSB_FADDR),
- decode_ep0stage(musb->ep0_state));
-
- if (csr & MUSB_CSR0_P_DATAEND) {
- /*
- * If DATAEND is set we should not call the callback,
- * hence the status stage is not complete.
- */
- return IRQ_HANDLED;
- }
-
- /* I sent a stall.. need to acknowledge it now.. */
- if (csr & MUSB_CSR0_P_SENTSTALL) {
- musb_writew(regs, MUSB_CSR0,
- csr & ~MUSB_CSR0_P_SENTSTALL);
- retval = IRQ_HANDLED;
- musb->ep0_state = MUSB_EP0_STAGE_IDLE;
- csr = musb_readw(regs, MUSB_CSR0);
- }
-
- /* request ended "early" */
- if (csr & MUSB_CSR0_P_SETUPEND) {
- musb_writew(regs, MUSB_CSR0, MUSB_CSR0_P_SVDSETUPEND);
- retval = IRQ_HANDLED;
- /* Transition into the early status phase */
- switch (musb->ep0_state) {
- case MUSB_EP0_STAGE_TX:
- musb->ep0_state = MUSB_EP0_STAGE_STATUSOUT;
- break;
- case MUSB_EP0_STAGE_RX:
- musb->ep0_state = MUSB_EP0_STAGE_STATUSIN;
- break;
- default:
- ERR("SetupEnd came in a wrong ep0stage %s\n",
- decode_ep0stage(musb->ep0_state));
- }
- csr = musb_readw(regs, MUSB_CSR0);
- /* NOTE: request may need completion */
- }
-
- /* docs from Mentor only describe tx, rx, and idle/setup states.
- * we need to handle nuances around status stages, and also the
- * case where status and setup stages come back-to-back ...
- */
- switch (musb->ep0_state) {
-
- case MUSB_EP0_STAGE_TX:
- /* irq on clearing txpktrdy */
- if ((csr & MUSB_CSR0_TXPKTRDY) == 0) {
- ep0_txstate(musb);
- retval = IRQ_HANDLED;
- }
- break;
-
- case MUSB_EP0_STAGE_RX:
- /* irq on set rxpktrdy */
- if (csr & MUSB_CSR0_RXPKTRDY) {
- ep0_rxstate(musb);
- retval = IRQ_HANDLED;
- }
- break;
-
- case MUSB_EP0_STAGE_STATUSIN:
- /* end of sequence #2 (OUT/RX state) or #3 (no data) */
-
- /* update address (if needed) only @ the end of the
- * status phase per usb spec, which also guarantees
- * we get 10 msec to receive this irq... until this
- * is done we won't see the next packet.
- */
- if (musb->set_address) {
- musb->set_address = false;
- musb_writeb(mbase, MUSB_FADDR, musb->address);
- }
-
- /* enter test mode if needed (exit by reset) */
- else if (musb->test_mode) {
- dev_dbg(musb->controller, "entering TESTMODE\n");
-
- if (MUSB_TEST_PACKET == musb->test_mode_nr)
- musb_load_testpacket(musb);
-
- musb_writeb(mbase, MUSB_TESTMODE,
- musb->test_mode_nr);
- }
- /* FALLTHROUGH */
-
- case MUSB_EP0_STAGE_STATUSOUT:
- /* end of sequence #1: write to host (TX state) */
- {
- struct musb_request *req;
-
- req = next_ep0_request(musb);
- if (req)
- musb_g_ep0_giveback(musb, &req->request);
- }
-
- /*
- * In case when several interrupts can get coalesced,
- * check to see if we've already received a SETUP packet...
- */
- if (csr & MUSB_CSR0_RXPKTRDY)
- goto setup;
-
- retval = IRQ_HANDLED;
- musb->ep0_state = MUSB_EP0_STAGE_IDLE;
- break;
-
- case MUSB_EP0_STAGE_IDLE:
- /*
- * This state is typically (but not always) indiscernible
- * from the status states since the corresponding interrupts
- * tend to happen within too little period of time (with only
- * a zero-length packet in between) and so get coalesced...
- */
- retval = IRQ_HANDLED;
- musb->ep0_state = MUSB_EP0_STAGE_SETUP;
- /* FALLTHROUGH */
-
- case MUSB_EP0_STAGE_SETUP:
-setup:
- if (csr & MUSB_CSR0_RXPKTRDY) {
- struct usb_ctrlrequest setup;
- int handled = 0;
-
- if (len != 8) {
- ERR("SETUP packet len %d != 8 ?\n", len);
- break;
- }
- musb_read_setup(musb, &setup);
- retval = IRQ_HANDLED;
-
- /* sometimes the RESET won't be reported */
- if (unlikely(musb->g.speed == USB_SPEED_UNKNOWN)) {
- u8 power;
-
- printk(KERN_NOTICE "%s: peripheral reset "
- "irq lost!\n",
- musb_driver_name);
- power = musb_readb(mbase, MUSB_POWER);
- musb->g.speed = (power & MUSB_POWER_HSMODE)
- ? USB_SPEED_HIGH : USB_SPEED_FULL;
-
- }
-
- switch (musb->ep0_state) {
-
- /* sequence #3 (no data stage), includes requests
- * we can't forward (notably SET_ADDRESS and the
- * device/endpoint feature set/clear operations)
- * plus SET_CONFIGURATION and others we must
- */
- case MUSB_EP0_STAGE_ACKWAIT:
- handled = service_zero_data_request(
- musb, &setup);
-
- /*
- * We're expecting no data in any case, so
- * always set the DATAEND bit -- doing this
- * here helps avoid SetupEnd interrupt coming
- * in the idle stage when we're stalling...
- */
- musb->ackpend |= MUSB_CSR0_P_DATAEND;
-
- /* status stage might be immediate */
- if (handled > 0)
- musb->ep0_state =
- MUSB_EP0_STAGE_STATUSIN;
- break;
-
- /* sequence #1 (IN to host), includes GET_STATUS
- * requests that we can't forward, GET_DESCRIPTOR
- * and others that we must
- */
- case MUSB_EP0_STAGE_TX:
- handled = service_in_request(musb, &setup);
- if (handled > 0) {
- musb->ackpend = MUSB_CSR0_TXPKTRDY
- | MUSB_CSR0_P_DATAEND;
- musb->ep0_state =
- MUSB_EP0_STAGE_STATUSOUT;
- }
- break;
-
- /* sequence #2 (OUT from host), always forward */
- default: /* MUSB_EP0_STAGE_RX */
- break;
- }
-
- dev_dbg(musb->controller, "handled %d, csr %04x, ep0stage %s\n",
- handled, csr,
- decode_ep0stage(musb->ep0_state));
-
- /* unless we need to delegate this to the gadget
- * driver, we know how to wrap this up: csr0 has
- * not yet been written.
- */
- if (handled < 0)
- goto stall;
- else if (handled > 0)
- goto finish;
-
- handled = forward_to_driver(musb, &setup);
- if (handled < 0) {
- musb_ep_select(mbase, 0);
-stall:
- dev_dbg(musb->controller, "stall (%d)\n", handled);
- musb->ackpend |= MUSB_CSR0_P_SENDSTALL;
- musb->ep0_state = MUSB_EP0_STAGE_IDLE;
-finish:
- musb_writew(regs, MUSB_CSR0,
- musb->ackpend);
- musb->ackpend = 0;
- }
- }
- break;
-
- case MUSB_EP0_STAGE_ACKWAIT:
- /* This should not happen. But happens with tusb6010 with
- * g_file_storage and high speed. Do nothing.
- */
- retval = IRQ_HANDLED;
- break;
-
- default:
- /* "can't happen" */
- WARN_ON(1);
- musb_writew(regs, MUSB_CSR0, MUSB_CSR0_P_SENDSTALL);
- musb->ep0_state = MUSB_EP0_STAGE_IDLE;
- break;
- }
-
- return retval;
-}
-
-
-static int
-musb_g_ep0_enable(struct usb_ep *ep, const struct usb_endpoint_descriptor *desc)
-{
- /* always enabled */
- return -EINVAL;
-}
-
-static int musb_g_ep0_disable(struct usb_ep *e)
-{
- /* always enabled */
- return -EINVAL;
-}
-
-static int
-musb_g_ep0_queue(struct usb_ep *e, struct usb_request *r, gfp_t gfp_flags)
-{
- struct musb_ep *ep;
- struct musb_request *req;
- struct musb *musb;
- int status;
- unsigned long lockflags;
- void __iomem *regs;
-
- if (!e || !r)
- return -EINVAL;
-
- ep = to_musb_ep(e);
- musb = ep->musb;
- regs = musb->control_ep->regs;
-
- req = to_musb_request(r);
- req->musb = musb;
- req->request.actual = 0;
- req->request.status = -EINPROGRESS;
- req->tx = ep->is_in;
-
- spin_lock_irqsave(&musb->lock, lockflags);
-
- if (!list_empty(&ep->req_list)) {
- status = -EBUSY;
- goto cleanup;
- }
-
- switch (musb->ep0_state) {
- case MUSB_EP0_STAGE_RX: /* control-OUT data */
- case MUSB_EP0_STAGE_TX: /* control-IN data */
- case MUSB_EP0_STAGE_ACKWAIT: /* zero-length data */
- status = 0;
- break;
- default:
- dev_dbg(musb->controller, "ep0 request queued in state %d\n",
- musb->ep0_state);
- status = -EINVAL;
- goto cleanup;
- }
-
- /* add request to the list */
- list_add_tail(&req->list, &ep->req_list);
-
- dev_dbg(musb->controller, "queue to %s (%s), length=%d\n",
- ep->name, ep->is_in ? "IN/TX" : "OUT/RX",
- req->request.length);
-
- musb_ep_select(musb->mregs, 0);
-
- /* sequence #1, IN ... start writing the data */
- if (musb->ep0_state == MUSB_EP0_STAGE_TX)
- ep0_txstate(musb);
-
- /* sequence #3, no-data ... issue IN status */
- else if (musb->ep0_state == MUSB_EP0_STAGE_ACKWAIT) {
- if (req->request.length)
- status = -EINVAL;
- else {
- musb->ep0_state = MUSB_EP0_STAGE_STATUSIN;
- musb_writew(regs, MUSB_CSR0,
- musb->ackpend | MUSB_CSR0_P_DATAEND);
- musb->ackpend = 0;
- musb_g_ep0_giveback(ep->musb, r);
- }
-
- /* else for sequence #2 (OUT), caller provides a buffer
- * before the next packet arrives. deferred responses
- * (after SETUP is acked) are racey.
- */
- } else if (musb->ackpend) {
- musb_writew(regs, MUSB_CSR0, musb->ackpend);
- musb->ackpend = 0;
- }
-
-cleanup:
- spin_unlock_irqrestore(&musb->lock, lockflags);
- return status;
-}
-
-static int musb_g_ep0_dequeue(struct usb_ep *ep, struct usb_request *req)
-{
- /* we just won't support this */
- return -EINVAL;
-}
-
-static int musb_g_ep0_halt(struct usb_ep *e, int value)
-{
- struct musb_ep *ep;
- struct musb *musb;
- void __iomem *base, *regs;
- unsigned long flags;
- int status;
- u16 csr;
-
- if (!e || !value)
- return -EINVAL;
-
- ep = to_musb_ep(e);
- musb = ep->musb;
- base = musb->mregs;
- regs = musb->control_ep->regs;
- status = 0;
-
- spin_lock_irqsave(&musb->lock, flags);
-
- if (!list_empty(&ep->req_list)) {
- status = -EBUSY;
- goto cleanup;
- }
-
- musb_ep_select(base, 0);
- csr = musb->ackpend;
-
- switch (musb->ep0_state) {
-
- /* Stalls are usually issued after parsing SETUP packet, either
- * directly in irq context from setup() or else later.
- */
- case MUSB_EP0_STAGE_TX: /* control-IN data */
- case MUSB_EP0_STAGE_ACKWAIT: /* STALL for zero-length data */
- case MUSB_EP0_STAGE_RX: /* control-OUT data */
- csr = musb_readw(regs, MUSB_CSR0);
- /* FALLTHROUGH */
-
- /* It's also OK to issue stalls during callbacks when a non-empty
- * DATA stage buffer has been read (or even written).
- */
- case MUSB_EP0_STAGE_STATUSIN: /* control-OUT status */
- case MUSB_EP0_STAGE_STATUSOUT: /* control-IN status */
-
- csr |= MUSB_CSR0_P_SENDSTALL;
- musb_writew(regs, MUSB_CSR0, csr);
- musb->ep0_state = MUSB_EP0_STAGE_IDLE;
- musb->ackpend = 0;
- break;
- default:
- dev_dbg(musb->controller, "ep0 can't halt in state %d\n", musb->ep0_state);
- status = -EINVAL;
- }
-
-cleanup:
- spin_unlock_irqrestore(&musb->lock, flags);
- return status;
-}
-
-const struct usb_ep_ops musb_g_ep0_ops = {
- .enable = musb_g_ep0_enable,
- .disable = musb_g_ep0_disable,
- .alloc_request = musb_alloc_request,
- .free_request = musb_free_request,
- .queue = musb_g_ep0_queue,
- .dequeue = musb_g_ep0_dequeue,
- .set_halt = musb_g_ep0_halt,
-};
diff --git a/drivers/usb/musb/musb_uboot.c b/drivers/usb/musb/musb_uboot.c
deleted file mode 100644
index 0512680..0000000
--- a/drivers/usb/musb/musb_uboot.c
+++ /dev/null
@@ -1,239 +0,0 @@
-#include <common.h>
-#include <watchdog.h>
-#include <asm/errno.h>
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-
-#define __UBOOT__
-#include <usb.h>
-#include "linux-compat.h"
-#include "usb-compat.h"
-#include "musb_core.h"
-#include "musb_host.h"
-#include "musb_gadget.h"
-
-#ifdef CONFIG_MUSB_HOST
-static struct musb *host;
-static struct usb_hcd hcd;
-static enum usb_device_speed host_speed;
-
-static void musb_host_complete_urb(struct urb *urb)
-{
- urb->dev->status &= ~USB_ST_NOT_PROC;
- urb->dev->act_len = urb->actual_length;
-}
-
-static struct usb_host_endpoint hep;
-static struct urb urb;
-
-static struct urb *construct_urb(struct usb_device *dev, int endpoint_type,
- unsigned long pipe, void *buffer, int len,
- struct devrequest *setup, int interval)
-{
- int epnum = usb_pipeendpoint(pipe);
- int is_in = usb_pipein(pipe);
-
- memset(&urb, 0, sizeof(struct urb));
- memset(&hep, 0, sizeof(struct usb_host_endpoint));
- INIT_LIST_HEAD(&hep.urb_list);
- INIT_LIST_HEAD(&urb.urb_list);
- urb.ep = &hep;
- urb.complete = musb_host_complete_urb;
- urb.status = -EINPROGRESS;
- urb.dev = dev;
- urb.pipe = pipe;
- urb.transfer_buffer = buffer;
- urb.transfer_dma = (unsigned long)buffer;
- urb.transfer_buffer_length = len;
- urb.setup_packet = (unsigned char *)setup;
-
- urb.ep->desc.wMaxPacketSize =
- __cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
- dev->epmaxpacketout[epnum]);
- urb.ep->desc.bmAttributes = endpoint_type;
- urb.ep->desc.bEndpointAddress =
- (is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
- urb.ep->desc.bInterval = interval;
-
- return &urb;
-}
-
-#define MUSB_HOST_TIMEOUT 0x3ffffff
-
-static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
-{
- struct musb *host = hcd->hcd_priv;
- int ret;
- int timeout;
-
- ret = musb_urb_enqueue(hcd, urb, 0);
- if (ret < 0) {
- printf("Failed to enqueue URB to controller\n");
- return ret;
- }
-
- timeout = MUSB_HOST_TIMEOUT;
- do {
- if (ctrlc())
- return -EIO;
- host->isr(0, host);
- } while ((urb->dev->status & USB_ST_NOT_PROC) && --timeout);
-
- return urb->status;
-}
-
-int submit_control_msg(struct usb_device *dev, unsigned long pipe,
- void *buffer, int len, struct devrequest *setup)
-{
- struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_CONTROL, pipe,
- buffer, len, setup, 0);
-
- /* Fix speed for non hub-attached devices */
- if (!dev->parent)
- dev->speed = host_speed;
-
- return submit_urb(&hcd, urb);
-}
-
-
-int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
- void *buffer, int len)
-{
- struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_BULK, pipe,
- buffer, len, NULL, 0);
- return submit_urb(&hcd, urb);
-}
-
-int submit_int_msg(struct usb_device *dev, unsigned long pipe,
- void *buffer, int len, int interval)
-{
- struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_INT, pipe,
- buffer, len, NULL, interval);
- return submit_urb(&hcd, urb);
-}
-
-int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
-{
- u8 power;
- void *mbase;
- int timeout = MUSB_HOST_TIMEOUT;
-
- if (!host) {
- printf("MUSB host is not registered\n");
- return -ENODEV;
- }
-
- musb_start(host);
- mbase = host->mregs;
- do {
- if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
- break;
- } while (--timeout);
- if (!timeout)
- return -ENODEV;
-
- power = musb_readb(mbase, MUSB_POWER);
- musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
- udelay(30000);
- power = musb_readb(mbase, MUSB_POWER);
- musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
- host->isr(0, host);
- host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
- USB_SPEED_HIGH :
- (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
- USB_SPEED_FULL : USB_SPEED_LOW;
- host->is_active = 1;
- hcd.hcd_priv = host;
-
- return 0;
-}
-
-int usb_lowlevel_stop(int index)
-{
- if (!host) {
- printf("MUSB host is not registered\n");
- return -ENODEV;
- }
-
- musb_stop(host);
- return 0;
-}
-#endif /* CONFIG_MUSB_HOST */
-
-#ifdef CONFIG_MUSB_GADGET
-static struct musb *gadget;
-
-int usb_gadget_handle_interrupts(void)
-{
- WATCHDOG_RESET();
- if (!gadget || !gadget->isr)
- return -EINVAL;
-
- return gadget->isr(0, gadget);
-}
-
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
-{
- int ret;
-
- if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
- !driver->setup) {
- printf("bad parameter.\n");
- return -EINVAL;
- }
-
- if (!gadget) {
- printf("Controller uninitialized\n");
- return -ENXIO;
- }
-
- ret = musb_gadget_start(&gadget->g, driver);
- if (ret < 0) {
- printf("gadget_start failed with %d\n", ret);
- return ret;
- }
-
- ret = driver->bind(&gadget->g);
- if (ret < 0) {
- printf("bind failed with %d\n", ret);
- return ret;
- }
-
- return 0;
-}
-
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
-{
- /* TODO: implement me */
- return 0;
-}
-#endif /* CONFIG_MUSB_GADGET */
-
-int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
- void *ctl_regs)
-{
- struct musb **musbp;
-
- switch (plat->mode) {
-#ifdef CONFIG_MUSB_HOST
- case MUSB_HOST:
- musbp = &host;
- break;
-#endif
-#ifdef CONFIG_MUSB_GADGET
- case MUSB_PERIPHERAL:
- musbp = &gadget;
- break;
-#endif
- default:
- return -EINVAL;
- }
-
- *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
- if (!musbp) {
- printf("Failed to init the controller\n");
- return -EIO;
- }
-
- return 0;
-}
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
deleted file mode 100644
index b1c4dc7..0000000
--- a/drivers/usb/musb/omap2430.c
+++ /dev/null
@@ -1,626 +0,0 @@
-/*
- * Copyright (C) 2005-2007 by Texas Instruments
- * Some code has been taken from tusb6010.c
- * Copyrights for that are attributable to:
- * Copyright (C) 2006 Nokia Corporation
- * Tony Lindgren <tony@atomide.com>
- *
- * This file is part of the Inventra Controller Driver for Linux.
- *
- * The Inventra Controller Driver for Linux is free software; you
- * can redistribute it and/or modify it under the terms of the GNU
- * General Public License version 2 as published by the Free Software
- * Foundation.
- *
- * The Inventra Controller Driver for Linux is distributed in
- * the hope that it will be useful, but WITHOUT ANY WARRANTY;
- * without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
- * License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with The Inventra Controller Driver for Linux ; if not,
- * write to the Free Software Foundation, Inc., 59 Temple Place,
- * Suite 330, Boston, MA 02111-1307 USA
- *
- */
-#define __UBOOT__
-#ifndef __UBOOT__
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/pm_runtime.h>
-#include <linux/err.h>
-#include <linux/usb/musb-omap.h>
-#else
-#include <common.h>
-#include <asm/omap_musb.h>
-#include <twl4030.h>
-#include "linux-compat.h"
-#endif
-
-#include "musb_core.h"
-#include "omap2430.h"
-
-#ifndef __UBOOT__
-struct omap2430_glue {
- struct device *dev;
- struct platform_device *musb;
- enum omap_musb_vbus_id_status status;
- struct work_struct omap_musb_mailbox_work;
-};
-#define glue_to_musb(g) platform_get_drvdata(g->musb)
-
-struct omap2430_glue *_glue;
-
-static struct timer_list musb_idle_timer;
-
-static void musb_do_idle(unsigned long _musb)
-{
- struct musb *musb = (void *)_musb;
- unsigned long flags;
- u8 power;
- u8 devctl;
-
- spin_lock_irqsave(&musb->lock, flags);
-
- switch (musb->xceiv->state) {
- case OTG_STATE_A_WAIT_BCON:
-
- devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
- if (devctl & MUSB_DEVCTL_BDEVICE) {
- musb->xceiv->state = OTG_STATE_B_IDLE;
- MUSB_DEV_MODE(musb);
- } else {
- musb->xceiv->state = OTG_STATE_A_IDLE;
- MUSB_HST_MODE(musb);
- }
- break;
- case OTG_STATE_A_SUSPEND:
- /* finish RESUME signaling? */
- if (musb->port1_status & MUSB_PORT_STAT_RESUME) {
- power = musb_readb(musb->mregs, MUSB_POWER);
- power &= ~MUSB_POWER_RESUME;
- dev_dbg(musb->controller, "root port resume stopped, power %02x\n", power);
- musb_writeb(musb->mregs, MUSB_POWER, power);
- musb->is_active = 1;
- musb->port1_status &= ~(USB_PORT_STAT_SUSPEND
- | MUSB_PORT_STAT_RESUME);
- musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16;
- usb_hcd_poll_rh_status(musb_to_hcd(musb));
- /* NOTE: it might really be A_WAIT_BCON ... */
- musb->xceiv->state = OTG_STATE_A_HOST;
- }
- break;
- case OTG_STATE_A_HOST:
- devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
- if (devctl & MUSB_DEVCTL_BDEVICE)
- musb->xceiv->state = OTG_STATE_B_IDLE;
- else
- musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
- default:
- break;
- }
- spin_unlock_irqrestore(&musb->lock, flags);
-}
-
-
-static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout)
-{
- unsigned long default_timeout = jiffies + msecs_to_jiffies(3);
- static unsigned long last_timer;
-
- if (timeout == 0)
- timeout = default_timeout;
-
- /* Never idle if active, or when VBUS timeout is not set as host */
- if (musb->is_active || ((musb->a_wait_bcon == 0)
- && (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) {
- dev_dbg(musb->controller, "%s active, deleting timer\n",
- otg_state_string(musb->xceiv->state));
- del_timer(&musb_idle_timer);
- last_timer = jiffies;
- return;
- }
-
- if (time_after(last_timer, timeout)) {
- if (!timer_pending(&musb_idle_timer))
- last_timer = timeout;
- else {
- dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n");
- return;
- }
- }
- last_timer = timeout;
-
- dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n",
- otg_state_string(musb->xceiv->state),
- (unsigned long)jiffies_to_msecs(timeout - jiffies));
- mod_timer(&musb_idle_timer, timeout);
-}
-
-static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
-{
- struct usb_otg *otg = musb->xceiv->otg;
- u8 devctl;
- unsigned long timeout = jiffies + msecs_to_jiffies(1000);
- int ret = 1;
- /* HDRC controls CPEN, but beware current surges during device
- * connect. They can trigger transient overcurrent conditions
- * that must be ignored.
- */
-
- devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
-
- if (is_on) {
- if (musb->xceiv->state == OTG_STATE_A_IDLE) {
- /* start the session */
- devctl |= MUSB_DEVCTL_SESSION;
- musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
- /*
- * Wait for the musb to set as A device to enable the
- * VBUS
- */
- while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) {
-
- cpu_relax();
-
- if (time_after(jiffies, timeout)) {
- dev_err(musb->controller,
- "configured as A device timeout");
- ret = -EINVAL;
- break;
- }
- }
-
- if (ret && otg->set_vbus)
- otg_set_vbus(otg, 1);
- } else {
- musb->is_active = 1;
- otg->default_a = 1;
- musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
- devctl |= MUSB_DEVCTL_SESSION;
- MUSB_HST_MODE(musb);
- }
- } else {
- musb->is_active = 0;
-
- /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and
- * jumping right to B_IDLE...
- */
-
- otg->default_a = 0;
- musb->xceiv->state = OTG_STATE_B_IDLE;
- devctl &= ~MUSB_DEVCTL_SESSION;
-
- MUSB_DEV_MODE(musb);
- }
- musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
-
- dev_dbg(musb->controller, "VBUS %s, devctl %02x "
- /* otg %3x conf %08x prcm %08x */ "\n",
- otg_state_string(musb->xceiv->state),
- musb_readb(musb->mregs, MUSB_DEVCTL));
-}
-
-static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode)
-{
- u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
-
- devctl |= MUSB_DEVCTL_SESSION;
- musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
-
- return 0;
-}
-#endif
-
-static inline void omap2430_low_level_exit(struct musb *musb)
-{
- u32 l;
-
- /* in any role */
- l = musb_readl(musb->mregs, OTG_FORCESTDBY);
- l |= ENABLEFORCE; /* enable MSTANDBY */
- musb_writel(musb->mregs, OTG_FORCESTDBY, l);
-}
-
-static inline void omap2430_low_level_init(struct musb *musb)
-{
- u32 l;
-
- l = musb_readl(musb->mregs, OTG_FORCESTDBY);
- l &= ~ENABLEFORCE; /* disable MSTANDBY */
- musb_writel(musb->mregs, OTG_FORCESTDBY, l);
-}
-
-#ifndef __UBOOT__
-void omap_musb_mailbox(enum omap_musb_vbus_id_status status)
-{
- struct omap2430_glue *glue = _glue;
- struct musb *musb = glue_to_musb(glue);
-
- glue->status = status;
- if (!musb) {
- dev_err(glue->dev, "musb core is not yet ready\n");
- return;
- }
-
- schedule_work(&glue->omap_musb_mailbox_work);
-}
-EXPORT_SYMBOL_GPL(omap_musb_mailbox);
-
-static void omap_musb_set_mailbox(struct omap2430_glue *glue)
-{
- struct musb *musb = glue_to_musb(glue);
- struct device *dev = musb->controller;
- struct musb_hdrc_platform_data *pdata = dev->platform_data;
- struct omap_musb_board_data *data = pdata->board_data;
- struct usb_otg *otg = musb->xceiv->otg;
-
- switch (glue->status) {
- case OMAP_MUSB_ID_GROUND:
- dev_dbg(dev, "ID GND\n");
-
- otg->default_a = true;
- musb->xceiv->state = OTG_STATE_A_IDLE;
- musb->xceiv->last_event = USB_EVENT_ID;
- if (!is_otg_enabled(musb) || musb->gadget_driver) {
- pm_runtime_get_sync(dev);
- usb_phy_init(musb->xceiv);
- omap2430_musb_set_vbus(musb, 1);
- }
- break;
-
- case OMAP_MUSB_VBUS_VALID:
- dev_dbg(dev, "VBUS Connect\n");
-
- otg->default_a = false;
- musb->xceiv->state = OTG_STATE_B_IDLE;
- musb->xceiv->last_event = USB_EVENT_VBUS;
- if (musb->gadget_driver)
- pm_runtime_get_sync(dev);
- usb_phy_init(musb->xceiv);
- break;
-
- case OMAP_MUSB_ID_FLOAT:
- case OMAP_MUSB_VBUS_OFF:
- dev_dbg(dev, "VBUS Disconnect\n");
-
- musb->xceiv->last_event = USB_EVENT_NONE;
- if (is_otg_enabled(musb) || is_peripheral_enabled(musb))
- if (musb->gadget_driver) {
- pm_runtime_mark_last_busy(dev);
- pm_runtime_put_autosuspend(dev);
- }
-
- if (data->interface_type == MUSB_INTERFACE_UTMI) {
- if (musb->xceiv->otg->set_vbus)
- otg_set_vbus(musb->xceiv->otg, 0);
- }
- usb_phy_shutdown(musb->xceiv);
- break;
- default:
- dev_dbg(dev, "ID float\n");
- }
-}
-
-
-static void omap_musb_mailbox_work(struct work_struct *mailbox_work)
-{
- struct omap2430_glue *glue = container_of(mailbox_work,
- struct omap2430_glue, omap_musb_mailbox_work);
- omap_musb_set_mailbox(glue);
-}
-#endif
-
-static int omap2430_musb_init(struct musb *musb)
-{
- u32 l;
- int status = 0;
-#ifndef __UBOOT__
- struct device *dev = musb->controller;
- struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
- struct musb_hdrc_platform_data *plat = dev->platform_data;
- struct omap_musb_board_data *data = plat->board_data;
-#else
- struct omap_musb_board_data *data =
- (struct omap_musb_board_data *)musb->controller;
-#endif
-
-
-#ifndef __UBOOT__
- /* We require some kind of external transceiver, hooked
- * up through ULPI. TWL4030-family PMICs include one,
- * which needs a driver, drivers aren't always needed.
- */
- musb->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
- if (IS_ERR_OR_NULL(musb->xceiv)) {
- pr_err("HS USB OTG: no transceiver configured\n");
- return -ENODEV;
- }
-
- status = pm_runtime_get_sync(dev);
- if (status < 0) {
- dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status);
- goto err1;
- }
-#endif
-
- l = musb_readl(musb->mregs, OTG_INTERFSEL);
-
- if (data->interface_type == MUSB_INTERFACE_UTMI) {
- /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
- l &= ~ULPI_12PIN; /* Disable ULPI */
- l |= UTMI_8BIT; /* Enable UTMI */
- } else {
- l |= ULPI_12PIN;
- }
-
- musb_writel(musb->mregs, OTG_INTERFSEL, l);
-
- pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
- "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
- musb_readl(musb->mregs, OTG_REVISION),
- musb_readl(musb->mregs, OTG_SYSCONFIG),
- musb_readl(musb->mregs, OTG_SYSSTATUS),
- musb_readl(musb->mregs, OTG_INTERFSEL),
- musb_readl(musb->mregs, OTG_SIMENABLE));
-
-#ifndef __UBOOT__
- setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
-
- if (glue->status != OMAP_MUSB_UNKNOWN)
- omap_musb_set_mailbox(glue);
-
- pm_runtime_put_noidle(musb->controller);
-#endif
- return 0;
-
-err1:
- return status;
-}
-
-static void omap2430_musb_enable(struct musb *musb)
-{
-#ifndef __UBOOT__
- u8 devctl;
- unsigned long timeout = jiffies + msecs_to_jiffies(1000);
- struct device *dev = musb->controller;
- struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
- struct musb_hdrc_platform_data *pdata = dev->platform_data;
- struct omap_musb_board_data *data = pdata->board_data;
-
- switch (glue->status) {
-
- case OMAP_MUSB_ID_GROUND:
- usb_phy_init(musb->xceiv);
- if (data->interface_type != MUSB_INTERFACE_UTMI)
- break;
- devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
- /* start the session */
- devctl |= MUSB_DEVCTL_SESSION;
- musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
- while (musb_readb(musb->mregs, MUSB_DEVCTL) &
- MUSB_DEVCTL_BDEVICE) {
- cpu_relax();
-
- if (time_after(jiffies, timeout)) {
- dev_err(dev, "configured as A device timeout");
- break;
- }
- }
- break;
-
- case OMAP_MUSB_VBUS_VALID:
- usb_phy_init(musb->xceiv);
- break;
-
- default:
- break;
- }
-#else
-#ifdef CONFIG_TWL4030_USB
- if (twl4030_usb_ulpi_init()) {
- serial_printf("ERROR: %s Could not initialize PHY\n",
- __PRETTY_FUNCTION__);
- }
-#endif
-#endif
-}
-
-static void omap2430_musb_disable(struct musb *musb)
-{
-#ifndef __UBOOT__
- struct device *dev = musb->controller;
- struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
-
- if (glue->status != OMAP_MUSB_UNKNOWN)
- usb_phy_shutdown(musb->xceiv);
-#endif
-}
-
-static int omap2430_musb_exit(struct musb *musb)
-{
- del_timer_sync(&musb_idle_timer);
-
- omap2430_low_level_exit(musb);
-
- return 0;
-}
-
-#ifndef __UBOOT__
-static const struct musb_platform_ops omap2430_ops = {
-#else
-const struct musb_platform_ops omap2430_ops = {
-#endif
- .init = omap2430_musb_init,
- .exit = omap2430_musb_exit,
-
-#ifndef __UBOOT__
- .set_mode = omap2430_musb_set_mode,
- .try_idle = omap2430_musb_try_idle,
-
- .set_vbus = omap2430_musb_set_vbus,
-#endif
-
- .enable = omap2430_musb_enable,
- .disable = omap2430_musb_disable,
-};
-
-#ifndef __UBOOT__
-static u64 omap2430_dmamask = DMA_BIT_MASK(32);
-
-static int __devinit omap2430_probe(struct platform_device *pdev)
-{
- struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
- struct platform_device *musb;
- struct omap2430_glue *glue;
- int ret = -ENOMEM;
-
- glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
- if (!glue) {
- dev_err(&pdev->dev, "failed to allocate glue context\n");
- goto err0;
- }
-
- musb = platform_device_alloc("musb-hdrc", -1);
- if (!musb) {
- dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err0;
- }
-
- musb->dev.parent = &pdev->dev;
- musb->dev.dma_mask = &omap2430_dmamask;
- musb->dev.coherent_dma_mask = omap2430_dmamask;
-
- glue->dev = &pdev->dev;
- glue->musb = musb;
- glue->status = OMAP_MUSB_UNKNOWN;
-
- pdata->platform_ops = &omap2430_ops;
-
- platform_set_drvdata(pdev, glue);
-
- /*
- * REVISIT if we ever have two instances of the wrapper, we will be
- * in big trouble
- */
- _glue = glue;
-
- INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
-
- ret = platform_device_add_resources(musb, pdev->resource,
- pdev->num_resources);
- if (ret) {
- dev_err(&pdev->dev, "failed to add resources\n");
- goto err1;
- }
-
- ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
- if (ret) {
- dev_err(&pdev->dev, "failed to add platform_data\n");
- goto err1;
- }
-
- pm_runtime_enable(&pdev->dev);
-
- ret = platform_device_add(musb);
- if (ret) {
- dev_err(&pdev->dev, "failed to register musb device\n");
- goto err1;
- }
-
- return 0;
-
-err1:
- platform_device_put(musb);
-
-err0:
- return ret;
-}
-
-static int __devexit omap2430_remove(struct platform_device *pdev)
-{
- struct omap2430_glue *glue = platform_get_drvdata(pdev);
-
- cancel_work_sync(&glue->omap_musb_mailbox_work);
- platform_device_del(glue->musb);
- platform_device_put(glue->musb);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-
-static int omap2430_runtime_suspend(struct device *dev)
-{
- struct omap2430_glue *glue = dev_get_drvdata(dev);
- struct musb *musb = glue_to_musb(glue);
-
- if (musb) {
- musb->context.otg_interfsel = musb_readl(musb->mregs,
- OTG_INTERFSEL);
-
- omap2430_low_level_exit(musb);
- usb_phy_set_suspend(musb->xceiv, 1);
- }
-
- return 0;
-}
-
-static int omap2430_runtime_resume(struct device *dev)
-{
- struct omap2430_glue *glue = dev_get_drvdata(dev);
- struct musb *musb = glue_to_musb(glue);
-
- if (musb) {
- omap2430_low_level_init(musb);
- musb_writel(musb->mregs, OTG_INTERFSEL,
- musb->context.otg_interfsel);
-
- usb_phy_set_suspend(musb->xceiv, 0);
- }
-
- return 0;
-}
-
-static struct dev_pm_ops omap2430_pm_ops = {
- .runtime_suspend = omap2430_runtime_suspend,
- .runtime_resume = omap2430_runtime_resume,
-};
-
-#define DEV_PM_OPS (&omap2430_pm_ops)
-#else
-#define DEV_PM_OPS NULL
-#endif
-
-static struct platform_driver omap2430_driver = {
- .probe = omap2430_probe,
- .remove = __devexit_p(omap2430_remove),
- .driver = {
- .name = "musb-omap2430",
- .pm = DEV_PM_OPS,
- },
-};
-
-MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
-MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
-MODULE_LICENSE("GPL v2");
-
-static int __init omap2430_init(void)
-{
- return platform_driver_register(&omap2430_driver);
-}
-subsys_initcall(omap2430_init);
-
-static void __exit omap2430_exit(void)
-{
- platform_driver_unregister(&omap2430_driver);
-}
-module_exit(omap2430_exit);
-#endif
diff --git a/drivers/usb/musb/omap2430.h b/drivers/usb/musb/omap2430.h
deleted file mode 100644
index 3b795c2..0000000
--- a/drivers/usb/musb/omap2430.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (C) 2005-2006 by Texas Instruments
- *
- * The Inventra Controller Driver for Linux is free software; you
- * can redistribute it and/or modify it under the terms of the GNU
- * General Public License version 2 as published by the Free Software
- * Foundation.
- */
-
-#ifndef __MUSB_OMAP243X_H__
-#define __MUSB_OMAP243X_H__
-
-#ifndef __UBOOT__
-#include <plat/usb.h>
-#else
-#undef RESETDONE
-#endif
-
-/*
- * OMAP2430-specific definitions
- */
-
-#define OTG_REVISION 0x400
-
-#define OTG_SYSCONFIG 0x404
-# define MIDLEMODE 12 /* bit position */
-# define FORCESTDBY (0 << MIDLEMODE)
-# define NOSTDBY (1 << MIDLEMODE)
-# define SMARTSTDBY (2 << MIDLEMODE)
-
-# define SIDLEMODE 3 /* bit position */
-# define FORCEIDLE (0 << SIDLEMODE)
-# define NOIDLE (1 << SIDLEMODE)
-# define SMARTIDLE (2 << SIDLEMODE)
-
-# define ENABLEWAKEUP (1 << 2)
-# define SOFTRST (1 << 1)
-# define AUTOIDLE (1 << 0)
-
-#define OTG_SYSSTATUS 0x408
-# define RESETDONE (1 << 0)
-
-#define OTG_INTERFSEL 0x40c
-# define EXTCP (1 << 2)
-# define PHYSEL 0 /* bit position */
-# define UTMI_8BIT (0 << PHYSEL)
-# define ULPI_12PIN (1 << PHYSEL)
-# define ULPI_8PIN (2 << PHYSEL)
-
-#define OTG_SIMENABLE 0x410
-# define TM1 (1 << 0)
-
-#define OTG_FORCESTDBY 0x414
-# define ENABLEFORCE (1 << 0)
-
-#endif /* __MUSB_OMAP243X_H__ */
--
1.7.10.4
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