diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/octeon/patches-3.10/130-gpio.patch | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/target/linux/octeon/patches-3.10/130-gpio.patch b/target/linux/octeon/patches-3.10/130-gpio.patch new file mode 100644 index 0000000000..b4bcb46bbc --- /dev/null +++ b/target/linux/octeon/patches-3.10/130-gpio.patch @@ -0,0 +1,207 @@ +Index: linux-3.10.49/drivers/gpio/Kconfig +=================================================================== +--- linux-3.10.49.orig/drivers/gpio/Kconfig 2014-07-17 23:58:15.000000000 +0100 ++++ linux-3.10.49/drivers/gpio/Kconfig 2014-07-27 05:55:40.312389198 +0100 +@@ -171,6 +171,14 @@ + Qualcomm MSM chips. Most of the pins on the MSM can be + selected for GPIO, and are controlled by this driver. + ++config GPIO_OCTEON ++ tristate "Cavium OCTEON GPIO" ++ depends on GPIOLIB && CPU_CAVIUM_OCTEON ++ default y ++ help ++ Say yes here to support the on-chip GPIO lines on the OCTEON ++ family of SOCs. ++ + config GPIO_MVEBU + def_bool y + depends on PLAT_ORION +Index: linux-3.10.49/drivers/gpio/Makefile +=================================================================== +--- linux-3.10.49.orig/drivers/gpio/Makefile 2014-07-17 23:58:15.000000000 +0100 ++++ linux-3.10.49/drivers/gpio/Makefile 2014-07-27 05:55:40.312389198 +0100 +@@ -10,6 +10,7 @@ + # Device drivers. Generally keep list sorted alphabetically + obj-$(CONFIG_GPIO_GENERIC) += gpio-generic.o + ++obj-$(CONFIG_GPIO_OCTEON) += gpio-octeon.o + obj-$(CONFIG_GPIO_74X164) += gpio-74x164.o + obj-$(CONFIG_GPIO_ADNP) += gpio-adnp.o + obj-$(CONFIG_GPIO_ADP5520) += gpio-adp5520.o +Index: linux-3.10.49/drivers/gpio/gpio-octeon.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-3.10.49/drivers/gpio/gpio-octeon.c 2014-07-27 05:55:40.312389198 +0100 +@@ -0,0 +1,159 @@ ++/* ++ * This file is subject to the terms and conditions of the GNU General Public ++ * License. See the file "COPYING" in the main directory of this archive ++ * for more details. ++ * ++ * Copyright (C) 2011,2012 Cavium Inc. ++ */ ++ ++#include <linux/platform_device.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/gpio.h> ++#include <linux/io.h> ++ ++#include <asm/octeon/octeon.h> ++#include <asm/octeon/cvmx-gpio-defs.h> ++ ++#define DRV_VERSION "1.0" ++#define DRV_DESCRIPTION "Cavium Inc. OCTEON GPIO Driver" ++ ++#define RX_DAT 0x80 ++#define TX_SET 0x88 ++#define TX_CLEAR 0x90 ++/* ++ * The address offset of the GPIO configuration register for a given ++ * line. ++ */ ++static unsigned int bit_cfg_reg(unsigned int gpio) ++{ ++ if (gpio < 16) ++ return 8 * gpio; ++ else ++ return 8 * (gpio - 16) + 0x100; ++} ++ ++struct octeon_gpio { ++ struct gpio_chip chip; ++ u64 register_base; ++}; ++ ++static int octeon_gpio_dir_in(struct gpio_chip *chip, unsigned offset) ++{ ++ struct octeon_gpio *gpio = container_of(chip, struct octeon_gpio, chip); ++ ++ cvmx_write_csr(gpio->register_base + bit_cfg_reg(offset), 0); ++ return 0; ++} ++ ++static void octeon_gpio_set(struct gpio_chip *chip, unsigned offset, int value) ++{ ++ struct octeon_gpio *gpio = container_of(chip, struct octeon_gpio, chip); ++ u64 mask = 1ull << offset; ++ u64 reg = gpio->register_base + (value ? TX_SET : TX_CLEAR); ++ cvmx_write_csr(reg, mask); ++} ++ ++static int octeon_gpio_dir_out(struct gpio_chip *chip, unsigned offset, ++ int value) ++{ ++ struct octeon_gpio *gpio = container_of(chip, struct octeon_gpio, chip); ++ union cvmx_gpio_bit_cfgx cfgx; ++ ++ ++ octeon_gpio_set(chip, offset, value); ++ ++ cfgx.u64 = 0; ++ cfgx.s.tx_oe = 1; ++ ++ cvmx_write_csr(gpio->register_base + bit_cfg_reg(offset), cfgx.u64); ++ return 0; ++} ++ ++static int octeon_gpio_get(struct gpio_chip *chip, unsigned offset) ++{ ++ struct octeon_gpio *gpio = container_of(chip, struct octeon_gpio, chip); ++ u64 read_bits = cvmx_read_csr(gpio->register_base + RX_DAT); ++ ++ return ((1ull << offset) & read_bits) != 0; ++} ++ ++static int octeon_gpio_probe(struct platform_device *pdev) ++{ ++ struct octeon_gpio *gpio; ++ struct gpio_chip *chip; ++ struct resource *res_mem; ++ int err = 0; ++ ++ gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); ++ if (!gpio) ++ return -ENOMEM; ++ chip = &gpio->chip; ++ ++ res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ if (res_mem == NULL) { ++ dev_err(&pdev->dev, "found no memory resource\n"); ++ err = -ENXIO; ++ goto out; ++ } ++ if (!devm_request_mem_region(&pdev->dev, res_mem->start, ++ resource_size(res_mem), ++ res_mem->name)) { ++ dev_err(&pdev->dev, "request_mem_region failed\n"); ++ err = -ENXIO; ++ goto out; ++ } ++ gpio->register_base = (u64)devm_ioremap(&pdev->dev, res_mem->start, ++ resource_size(res_mem)); ++ ++ ++ pdev->dev.platform_data = chip; ++ chip->label = "octeon-gpio"; ++ chip->dev = &pdev->dev; ++ chip->owner = THIS_MODULE; ++ chip->base = 0; ++ chip->can_sleep = 0; ++ chip->ngpio = 20; ++ chip->direction_input = octeon_gpio_dir_in; ++ chip->get = octeon_gpio_get; ++ chip->direction_output = octeon_gpio_dir_out; ++ chip->set = octeon_gpio_set; ++ err = gpiochip_add(chip); ++ if (err) ++ goto out; ++ ++ dev_info(&pdev->dev, "version: " DRV_VERSION "\n"); ++out: ++ return err; ++} ++ ++static int octeon_gpio_remove(struct platform_device *pdev) ++{ ++ struct gpio_chip *chip = pdev->dev.platform_data; ++ return gpiochip_remove(chip); ++} ++ ++static struct of_device_id octeon_gpio_match[] = { ++ { ++ .compatible = "cavium,octeon-3860-gpio", ++ }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, octeon_gpio_match); ++ ++static struct platform_driver octeon_gpio_driver = { ++ .probe = octeon_gpio_probe, ++ .remove = octeon_gpio_remove, ++ .driver = { ++ .name = "octeon_gpio", ++ .owner = THIS_MODULE, ++ .of_match_table = octeon_gpio_match, ++ }, ++}; ++ ++module_platform_driver(octeon_gpio_driver); ++ ++MODULE_DESCRIPTION(DRV_DESCRIPTION); ++MODULE_AUTHOR("David Daney"); ++MODULE_LICENSE("GPL"); ++MODULE_VERSION(DRV_VERSION); +Index: linux-3.10.49/arch/mips/Kconfig +=================================================================== +--- linux-3.10.49.orig/arch/mips/Kconfig 2014-07-27 05:55:38.620389229 +0100 ++++ linux-3.10.49/arch/mips/Kconfig 2014-07-27 07:20:50.136294063 +0100 +@@ -769,6 +769,7 @@ + select USB_ARCH_HAS_OHCI + select USB_ARCH_HAS_EHCI + select HOLES_IN_ZONE ++ select ARCH_REQUIRE_GPIOLIB + help + This option supports all of the Octeon reference boards from Cavium + Networks. It builds a kernel that dynamically determines the Octeon |