From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-we0-x232.google.com ([2a00:1450:400c:c03::232]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1X9sop-0000dB-DY for barebox@lists.infradead.org; Wed, 23 Jul 2014 09:26:40 +0000 Received: by mail-we0-f178.google.com with SMTP id w61so891852wes.9 for ; Wed, 23 Jul 2014 02:26:17 -0700 (PDT) From: Sebastian Hesselbarth Date: Wed, 23 Jul 2014 11:26:07 +0200 Message-Id: <1406107568-8440-6-git-send-email-sebastian.hesselbarth@gmail.com> In-Reply-To: <1406107568-8440-1-git-send-email-sebastian.hesselbarth@gmail.com> References: <1406107568-8440-1-git-send-email-sebastian.hesselbarth@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 RESEND 5/6] of: pci: import of_pci_get_devfn() To: Sebastian Hesselbarth , barebox@lists.infradead.org Cc: Thomas Petazzoni Marvell MVEBU PCIe driver requires of_pcie_get_devfn(), import it from Linux. Signed-off-by: Sebastian Hesselbarth --- To: barebox@lists.infradead.org To: Sebastian Hesselbarth Cc: Thomas Petazzoni Cc: Ezequiel Garcia --- drivers/of/Kconfig | 6 ++++++ drivers/of/Makefile | 1 + drivers/of/of_pci.c | 27 +++++++++++++++++++++++++++ include/of_pci.h | 17 +++++++++++++++++ 4 files changed, 51 insertions(+) create mode 100644 drivers/of/of_pci.c create mode 100644 include/of_pci.h diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index 2b28cf3fb425..81955063d70c 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -27,6 +27,12 @@ config OF_GPIO depends on OFDEVICE def_bool y +config OF_PCI + bool + depends on PCI + help + OpenFirmware PCI bus accessors + config OF_BAREBOX_DRIVERS depends on OFDEVICE depends on ENV_HANDLING diff --git a/drivers/of/Makefile b/drivers/of/Makefile index c883e516c834..0dc2f8d63ed0 100644 --- a/drivers/of/Makefile +++ b/drivers/of/Makefile @@ -1,6 +1,7 @@ obj-y += address.o base.o fdt.o platform.o obj-$(CONFIG_OFTREE_MEM_GENERIC) += mem_generic.o obj-$(CONFIG_OF_GPIO) += of_gpio.o +obj-$(CONFIG_OF_PCI) += of_pci.o obj-y += partition.o obj-y += of_net.o obj-$(CONFIG_MTD) += of_mtd.o diff --git a/drivers/of/of_pci.c b/drivers/of/of_pci.c new file mode 100644 index 000000000000..2d0fbd2e5f69 --- /dev/null +++ b/drivers/of/of_pci.c @@ -0,0 +1,27 @@ +#include +#include +#include +#include + +/** + * of_pci_get_devfn() - Get device and function numbers for a device node + * @np: device node + * + * Parses a standard 5-cell PCI resource and returns an 8-bit value that can + * be passed to the PCI_SLOT() and PCI_FUNC() macros to extract the device + * and function numbers respectively. On error a negative error code is + * returned. + */ +int of_pci_get_devfn(struct device_node *np) +{ + unsigned int size; + const __be32 *reg; + + reg = of_get_property(np, "reg", &size); + + if (!reg || size < 5 * sizeof(__be32)) + return -EINVAL; + + return (be32_to_cpup(reg) >> 8) & 0xff; +} +EXPORT_SYMBOL_GPL(of_pci_get_devfn); diff --git a/include/of_pci.h b/include/of_pci.h new file mode 100644 index 000000000000..c95cb0135ae0 --- /dev/null +++ b/include/of_pci.h @@ -0,0 +1,17 @@ +#ifndef __OF_PCI_H +#define __OF_PCI_H + +#include + +#ifdef CONFIG_OF_PCI +int of_pci_get_devfn(struct device_node *np); + +#else +static inline int of_pci_get_devfn(struct device_node *np) +{ + return -EINVAL; +} + +#endif + +#endif -- 2.0.0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox