X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fatheros%2Fpatches-3.14%2F103-ar2315_gpio.patch;fp=target%2Flinux%2Fatheros%2Fpatches-3.14%2F103-ar2315_gpio.patch;h=79feefa2681f0b48f7298fdbda814eb8cbbd18f8;hb=cb5902d6034413c3f82197e2d3a75d16e739aa12;hp=0000000000000000000000000000000000000000;hpb=a8799105d77032d2e448bd0d05486a3dc3cee24a;p=openwrt%2Fopenwrt.git diff --git a/target/linux/atheros/patches-3.14/103-ar2315_gpio.patch b/target/linux/atheros/patches-3.14/103-ar2315_gpio.patch new file mode 100644 index 0000000000..79feefa268 --- /dev/null +++ b/target/linux/atheros/patches-3.14/103-ar2315_gpio.patch @@ -0,0 +1,315 @@ +--- a/arch/mips/ar231x/Kconfig ++++ b/arch/mips/ar231x/Kconfig +@@ -7,4 +7,5 @@ config SOC_AR5312 + config SOC_AR2315 + bool "Atheros 2315+ support" + depends on ATHEROS_AR231X ++ select GPIO_AR2315 + default y +--- a/arch/mips/ar231x/ar2315.c ++++ b/arch/mips/ar231x/ar2315.c +@@ -212,6 +212,34 @@ static struct platform_device ar2315_wdt + .num_resources = ARRAY_SIZE(ar2315_wdt_res) + }; + ++static struct resource ar2315_gpio_res[] = { ++ { ++ .name = "ar2315-gpio", ++ .flags = IORESOURCE_MEM, ++ .start = AR2315_GPIO, ++ .end = AR2315_GPIO + 0x10 - 1, ++ }, ++ { ++ .name = "ar2315-gpio", ++ .flags = IORESOURCE_IRQ, ++ .start = AR2315_MISC_IRQ_GPIO, ++ .end = AR2315_MISC_IRQ_GPIO, ++ }, ++ { ++ .name = "ar2315-gpio-irq-base", ++ .flags = IORESOURCE_IRQ, ++ .start = AR231X_GPIO_IRQ_BASE, ++ .end = AR231X_GPIO_IRQ_BASE, ++ } ++}; ++ ++static struct platform_device ar2315_gpio = { ++ .id = -1, ++ .name = "ar2315-gpio", ++ .resource = ar2315_gpio_res, ++ .num_resources = ARRAY_SIZE(ar2315_gpio_res) ++}; ++ + /* + * NB: We use mapping size that is larger than the actual flash size, + * but this shouldn't be a problem here, because the flash will simply +@@ -277,6 +305,7 @@ ar2315_init_devices(void) + ar231x_find_config(ar2315_flash_limit()); + ar2315_eth_data.macaddr = ar231x_board.config->enet0_mac; + ++ platform_device_register(&ar2315_gpio); + ar2315_init_gpio_leds(); + platform_device_register(&ar2315_wdt); + platform_device_register(&ar2315_spiflash); +--- a/drivers/gpio/Kconfig ++++ b/drivers/gpio/Kconfig +@@ -108,6 +108,13 @@ config GPIO_MAX730X + + comment "Memory mapped GPIO drivers:" + ++config GPIO_AR2315 ++ bool "AR2315 SoC GPIO support" ++ default y if SOC_AR2315 ++ depends on SOC_AR2315 ++ help ++ Say yes here to enable GPIO support for Atheros AR2315+ SoCs. ++ + config GPIO_AR5312 + bool "AR5312 SoC GPIO support" + default y if SOC_AR5312 +--- a/drivers/gpio/Makefile ++++ b/drivers/gpio/Makefile +@@ -15,6 +15,7 @@ obj-$(CONFIG_GPIO_ADNP) += gpio-adnp.o + obj-$(CONFIG_GPIO_ADP5520) += gpio-adp5520.o + obj-$(CONFIG_GPIO_ADP5588) += gpio-adp5588.o + obj-$(CONFIG_GPIO_AMD8111) += gpio-amd8111.o ++obj-$(CONFIG_GPIO_AR2315) += gpio-ar2315.o + obj-$(CONFIG_GPIO_AR5312) += gpio-ar5312.o + obj-$(CONFIG_GPIO_ARIZONA) += gpio-arizona.o + obj-$(CONFIG_GPIO_BCM_KONA) += gpio-bcm-kona.o +--- /dev/null ++++ b/drivers/gpio/gpio-ar2315.c +@@ -0,0 +1,233 @@ ++/* ++ * 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) 2003 Atheros Communications, Inc., All Rights Reserved. ++ * Copyright (C) 2006 FON Technology, SL. ++ * Copyright (C) 2006 Imre Kaloz ++ * Copyright (C) 2006 Felix Fietkau ++ * Copyright (C) 2012 Alexandros C. Couloumbis ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++ ++#define DRIVER_NAME "ar2315-gpio" ++ ++#define AR2315_GPIO_DI 0x0000 ++#define AR2315_GPIO_DO 0x0008 ++#define AR2315_GPIO_DIR 0x0010 ++#define AR2315_GPIO_INT 0x0018 ++ ++#define AR2315_GPIO_DIR_M(x) (1 << (x)) /* mask for i/o */ ++#define AR2315_GPIO_DIR_O(x) (1 << (x)) /* output */ ++#define AR2315_GPIO_DIR_I(x) (0) /* input */ ++ ++#define AR2315_GPIO_INT_NUM_M 0x3F /* mask for GPIO num */ ++#define AR2315_GPIO_INT_TRIG(x) ((x) << 6) /* interrupt trigger */ ++#define AR2315_GPIO_INT_TRIG_M (0x3 << 6) /* mask for int trig */ ++ ++#define AR2315_GPIO_INT_TRIG_OFF 0 /* Triggerring off */ ++#define AR2315_GPIO_INT_TRIG_LOW 1 /* Low Level Triggered */ ++#define AR2315_GPIO_INT_TRIG_HIGH 2 /* High Level Triggered */ ++#define AR2315_GPIO_INT_TRIG_EDGE 3 /* Edge Triggered */ ++ ++#define AR2315_GPIO_NUM 22 ++ ++static u32 ar2315_gpio_intmask; ++static u32 ar2315_gpio_intval; ++static unsigned ar2315_gpio_irq_base; ++static void __iomem *ar2315_mem; ++ ++static inline u32 ar2315_gpio_reg_read(unsigned reg) ++{ ++ return __raw_readl(ar2315_mem + reg); ++} ++ ++static inline void ar2315_gpio_reg_write(unsigned reg, u32 val) ++{ ++ __raw_writel(val, ar2315_mem + reg); ++} ++ ++static inline void ar2315_gpio_reg_mask(unsigned reg, u32 mask, u32 val) ++{ ++ ar2315_gpio_reg_write(reg, (ar2315_gpio_reg_read(reg) & ~mask) | val); ++} ++ ++static void ar2315_gpio_irq_handler(unsigned irq, struct irq_desc *desc) ++{ ++ u32 pend; ++ int bit = -1; ++ ++ /* only do one gpio interrupt at a time */ ++ pend = ar2315_gpio_reg_read(AR2315_GPIO_DI); ++ pend ^= ar2315_gpio_intval; ++ pend &= ar2315_gpio_intmask; ++ ++ if (pend) { ++ bit = fls(pend) - 1; ++ pend &= ~(1 << bit); ++ ar2315_gpio_intval ^= (1 << bit); ++ } ++ ++ /* Enable interrupt with edge detection */ ++ if ((ar2315_gpio_reg_read(AR2315_GPIO_DIR) & AR2315_GPIO_DIR_M(bit)) != ++ AR2315_GPIO_DIR_I(bit)) ++ return; ++ ++ if (bit >= 0) ++ generic_handle_irq(ar2315_gpio_irq_base + bit); ++} ++ ++static void ar2315_gpio_int_setup(unsigned gpio, int trig) ++{ ++ u32 reg = ar2315_gpio_reg_read(AR2315_GPIO_INT); ++ ++ reg &= ~(AR2315_GPIO_INT_NUM_M | AR2315_GPIO_INT_TRIG_M); ++ reg |= gpio | AR2315_GPIO_INT_TRIG(trig); ++ ar2315_gpio_reg_write(AR2315_GPIO_INT, reg); ++} ++ ++static void ar2315_gpio_irq_unmask(struct irq_data *d) ++{ ++ unsigned gpio = d->irq - ar2315_gpio_irq_base; ++ u32 dir = ar2315_gpio_reg_read(AR2315_GPIO_DIR); ++ ++ /* Enable interrupt with edge detection */ ++ if ((dir & AR2315_GPIO_DIR_M(gpio)) != AR2315_GPIO_DIR_I(gpio)) ++ return; ++ ++ ar2315_gpio_intmask |= (1 << gpio); ++ ar2315_gpio_int_setup(gpio, AR2315_GPIO_INT_TRIG_EDGE); ++} ++ ++static void ar2315_gpio_irq_mask(struct irq_data *d) ++{ ++ unsigned gpio = d->irq - ar2315_gpio_irq_base; ++ ++ /* Disable interrupt */ ++ ar2315_gpio_intmask &= ~(1 << gpio); ++ ar2315_gpio_int_setup(gpio, AR2315_GPIO_INT_TRIG_OFF); ++} ++ ++static struct irq_chip ar2315_gpio_irq_chip = { ++ .name = DRIVER_NAME, ++ .irq_unmask = ar2315_gpio_irq_unmask, ++ .irq_mask = ar2315_gpio_irq_mask, ++}; ++ ++static void ar2315_gpio_irq_init(unsigned irq) ++{ ++ unsigned i; ++ ++ ar2315_gpio_intval = ar2315_gpio_reg_read(AR2315_GPIO_DI); ++ for (i = 0; i < AR2315_GPIO_NUM; i++) { ++ unsigned _irq = ar2315_gpio_irq_base + i; ++ ++ irq_set_chip_and_handler(_irq, &ar2315_gpio_irq_chip, ++ handle_level_irq); ++ } ++ irq_set_chained_handler(irq, ar2315_gpio_irq_handler); ++} ++ ++static int ar2315_gpio_get_val(struct gpio_chip *chip, unsigned gpio) ++{ ++ return (ar2315_gpio_reg_read(AR2315_GPIO_DI) >> gpio) & 1; ++} ++ ++static void ar2315_gpio_set_val(struct gpio_chip *chip, unsigned gpio, int val) ++{ ++ u32 reg = ar2315_gpio_reg_read(AR2315_GPIO_DO); ++ ++ reg = val ? reg | (1 << gpio) : reg & ~(1 << gpio); ++ ar2315_gpio_reg_write(AR2315_GPIO_DO, reg); ++} ++ ++static int ar2315_gpio_dir_in(struct gpio_chip *chip, unsigned gpio) ++{ ++ ar2315_gpio_reg_mask(AR2315_GPIO_DIR, 1 << gpio, 0); ++ return 0; ++} ++ ++static int ar2315_gpio_dir_out(struct gpio_chip *chip, unsigned gpio, int val) ++{ ++ ar2315_gpio_reg_mask(AR2315_GPIO_DIR, 0, 1 << gpio); ++ ar2315_gpio_set_val(chip, gpio, val); ++ return 0; ++} ++ ++static int ar2315_gpio_to_irq(struct gpio_chip *chip, unsigned gpio) ++{ ++ return ar2315_gpio_irq_base + gpio; ++} ++ ++static struct gpio_chip ar2315_gpio_chip = { ++ .label = DRIVER_NAME, ++ .direction_input = ar2315_gpio_dir_in, ++ .direction_output = ar2315_gpio_dir_out, ++ .set = ar2315_gpio_set_val, ++ .get = ar2315_gpio_get_val, ++ .to_irq = ar2315_gpio_to_irq, ++ .base = 0, ++ .ngpio = AR2315_GPIO_NUM, ++}; ++ ++static int ar2315_gpio_probe(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ struct resource *res; ++ unsigned irq; ++ int ret; ++ ++ if (ar2315_mem) ++ return -EBUSY; ++ ++ res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, ++ "ar2315-gpio-irq-base"); ++ if (!res) { ++ dev_err(dev, "not found GPIO IRQ base\n"); ++ return -ENXIO; ++ } ++ ar2315_gpio_irq_base = res->start; ++ ++ res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, DRIVER_NAME); ++ if (!res) { ++ dev_err(dev, "not found IRQ number\n"); ++ return -ENXIO; ++ } ++ irq = res->start; ++ ++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, DRIVER_NAME); ++ ar2315_mem = devm_ioremap_resource(dev, res); ++ if (IS_ERR(ar2315_mem)) ++ return PTR_ERR(ar2315_mem); ++ ++ ar2315_gpio_chip.dev = dev; ++ ret = gpiochip_add(&ar2315_gpio_chip); ++ if (ret) { ++ dev_err(dev, "failed to add gpiochip\n"); ++ return ret; ++ } ++ ++ ar2315_gpio_irq_init(irq); ++ ++ return 0; ++} ++ ++static struct platform_driver ar2315_gpio_driver = { ++ .probe = ar2315_gpio_probe, ++ .driver = { ++ .name = DRIVER_NAME, ++ .owner = THIS_MODULE, ++ } ++}; ++ ++static int __init ar2315_gpio_init(void) ++{ ++ return platform_driver_register(&ar2315_gpio_driver); ++} ++subsys_initcall(ar2315_gpio_init);