From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-la0-x231.google.com ([2a00:1450:4010:c03::231]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1W2cwZ-0007ro-J9 for barebox@lists.infradead.org; Mon, 13 Jan 2014 08:32:26 +0000 Received: by mail-la0-f49.google.com with SMTP id y1so851915lam.22 for ; Mon, 13 Jan 2014 00:31:57 -0800 (PST) From: Antony Pavlov Date: Mon, 13 Jan 2014 12:39:59 +0400 Message-Id: <1389602399-11488-1-git-send-email-antonynpavlov@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH] net/phy: add driver for National Semiconductor DP83865 PHY To: barebox@lists.infradead.org Based on Linux kernel 3.12 driver. Signed-off-by: Antony Pavlov --- drivers/net/phy/Kconfig | 5 +++ drivers/net/phy/Makefile | 1 + drivers/net/phy/national.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 101 insertions(+) create mode 100644 drivers/net/phy/national.c diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 7ebdaa0..260774e 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -23,6 +23,11 @@ config MICREL_PHY ---help--- Supports the KSZ9021, VSC8201, KS8001 PHYs. +config NATIONAL_PHY + bool "Driver for National Semiconductor PHYs" + ---help--- + Currently supports the DP83865 PHY. + config SMSC_PHY bool "Drivers for SMSC PHYs" ---help--- diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 451573e..a00cc76 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -2,4 +2,5 @@ obj-y += phy.o mdio_bus.o obj-$(CONFIG_AT803X_PHY) += at803x.o obj-$(CONFIG_LXT_PHY) += lxt.o obj-$(CONFIG_MICREL_PHY) += micrel.o +obj-$(CONFIG_NATIONAL_PHY) += national.o obj-$(CONFIG_SMSC_PHY) += smsc.o diff --git a/drivers/net/phy/national.c b/drivers/net/phy/national.c new file mode 100644 index 0000000..e46d587 --- /dev/null +++ b/drivers/net/phy/national.c @@ -0,0 +1,95 @@ +/* + * drivers/net/phy/national.c + * + * Driver for National Semiconductor PHYs + * + * based on Stuart Menefy's linux national.c driver + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include +#include +#include + +/* Advanced proprietary configuration */ +#define NS_EXP_MEM_CTL 0x16 +#define NS_EXP_MEM_DATA 0x1d +#define NS_EXP_MEM_ADD 0x1e + +#define LED_CTRL_REG 0x13 +#define AN_FALLBACK_AN 0x0001 +#define AN_FALLBACK_CRC 0x0002 +#define AN_FALLBACK_IE 0x0004 +#define ALL_FALLBACK_ON (AN_FALLBACK_AN | AN_FALLBACK_CRC | AN_FALLBACK_IE) + +enum hdx_loopback { + hdx_loopback_on = 0, + hdx_loopback_off = 1, +}; + +static u8 ns_exp_read(struct phy_device *phydev, u16 reg) +{ + phy_write(phydev, NS_EXP_MEM_ADD, reg); + return phy_read(phydev, NS_EXP_MEM_DATA); +} + +static void ns_exp_write(struct phy_device *phydev, u16 reg, u8 data) +{ + phy_write(phydev, NS_EXP_MEM_ADD, reg); + phy_write(phydev, NS_EXP_MEM_DATA, data); +} + +static void ns_giga_speed_fallback(struct phy_device *phydev, int mode) +{ + int bmcr = phy_read(phydev, MII_BMCR); + + phy_write(phydev, MII_BMCR, (bmcr | BMCR_PDOWN)); + + /* Enable 8 bit expended memory read/write (no auto increment) */ + phy_write(phydev, NS_EXP_MEM_CTL, 0); + phy_write(phydev, NS_EXP_MEM_ADD, 0x1C0); + phy_write(phydev, NS_EXP_MEM_DATA, 0x0008); + phy_write(phydev, MII_BMCR, (bmcr & ~BMCR_PDOWN)); + phy_write(phydev, LED_CTRL_REG, mode); +} + +static void ns_10_base_t_hdx_loopack(struct phy_device *phydev, int disable) +{ + if (disable) + ns_exp_write(phydev, 0x1c0, ns_exp_read(phydev, 0x1c0) | 1); + else + ns_exp_write(phydev, 0x1c0, + ns_exp_read(phydev, 0x1c0) & 0xfffe); + + pr_debug("10BASE-T HDX loopback %s\n", + (ns_exp_read(phydev, 0x1c0) & 0x0001) ? "off" : "on"); +} + +static int ns_config_init(struct phy_device *phydev) +{ + ns_giga_speed_fallback(phydev, ALL_FALLBACK_ON); + /* In the latest MAC or switches design, the 10 Mbps loopback + is desired to be turned off. */ + ns_10_base_t_hdx_loopack(phydev, hdx_loopback_off); + + return 0; +} + +static struct phy_driver dp83865_driver = { + .phy_id = 0x20005c70, + .phy_id_mask = 0xfffffff0, + .drv.name = "NatSemi DP83865", + .features = PHY_GBIT_FEATURES | + SUPPORTED_Pause | SUPPORTED_Asym_Pause, + .config_init = ns_config_init, +}; + +static int ns_phy_init(void) +{ + return phy_driver_register(&dp83865_driver); +} +fs_initcall(ns_phy_init); -- 1.8.5.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox