diff options
Diffstat (limited to 'target/linux/ath25/patches-5.4/108-ar2315_gpio.patch')
| -rw-r--r-- | target/linux/ath25/patches-5.4/108-ar2315_gpio.patch | 363 |
1 files changed, 0 insertions, 363 deletions
diff --git a/target/linux/ath25/patches-5.4/108-ar2315_gpio.patch b/target/linux/ath25/patches-5.4/108-ar2315_gpio.patch deleted file mode 100644 index e198cecf15..0000000000 --- a/target/linux/ath25/patches-5.4/108-ar2315_gpio.patch +++ /dev/null @@ -1,363 +0,0 @@ ---- a/arch/mips/ath25/Kconfig -+++ b/arch/mips/ath25/Kconfig -@@ -8,6 +8,7 @@ config SOC_AR5312 - config SOC_AR2315 - bool "Atheros AR2315+ SoC support" - depends on ATH25 -+ select GPIO_AR2315 - default y - - config PCI_AR2315 ---- a/arch/mips/ath25/ar2315.c -+++ b/arch/mips/ath25/ar2315.c -@@ -21,6 +21,8 @@ - #include <linux/interrupt.h> - #include <linux/platform_device.h> - #include <linux/reboot.h> -+#include <linux/delay.h> -+#include <linux/gpio.h> - #include <asm/bootinfo.h> - #include <asm/reboot.h> - #include <asm/time.h> -@@ -167,11 +169,42 @@ void __init ar2315_arch_init_irq(void) - ar2315_misc_irq_domain = domain; - } - -+static struct resource ar2315_gpio_res[] = { -+ { -+ .name = "ar2315-gpio", -+ .flags = IORESOURCE_MEM, -+ .start = AR2315_RST_BASE + AR2315_GPIO, -+ .end = AR2315_RST_BASE + AR2315_GPIO + 0x10 - 1, -+ }, -+ { -+ .name = "ar2315-gpio", -+ .flags = IORESOURCE_IRQ, -+ }, -+ { -+ .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) -+}; -+ - void __init ar2315_init_devices(void) - { - /* Find board configuration */ - ath25_find_config(AR2315_SPI_READ_BASE, AR2315_SPI_READ_SIZE); - -+ ar2315_gpio_res[1].start = irq_create_mapping(ar2315_misc_irq_domain, -+ AR2315_MISC_IRQ_GPIO); -+ ar2315_gpio_res[1].end = ar2315_gpio_res[1].start; -+ platform_device_register(&ar2315_gpio); -+ - ath25_add_wmac(0, AR2315_WLAN0_BASE, AR2315_IRQ_WLAN0); - } - -@@ -187,8 +220,8 @@ static void ar2315_restart(char *command - /* Cold reset does not work on the AR2315/6, use the GPIO reset bits - * a workaround. Give it some time to attempt a gpio based hardware - * reset (atheros reference design workaround) */ -- -- /* TODO: implement the GPIO reset workaround */ -+ gpio_request_one(AR2315_RESET_GPIO, GPIOF_OUT_INIT_LOW, "Reset"); -+ mdelay(100); - - /* Some boards (e.g. Senao EOC-2610) don't implement the reset logic - * workaround. Attempt to jump to the mips reset location - ---- a/drivers/gpio/Kconfig -+++ b/drivers/gpio/Kconfig -@@ -113,6 +113,13 @@ config GPIO_AMDPT - driver for GPIO functionality on Promontory IOHub - Require ACPI ASL code to enumerate as a platform device. - -+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 -@@ -30,6 +30,7 @@ obj-$(CONFIG_GPIO_ALTERA) += gpio-alt - obj-$(CONFIG_GPIO_AMD8111) += gpio-amd8111.o - obj-$(CONFIG_GPIO_AMD_FCH) += gpio-amd-fch.o - obj-$(CONFIG_GPIO_AMDPT) += gpio-amdpt.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_ASPEED) += gpio-aspeed.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 <kaloz@openwrt.org> -+ * Copyright (C) 2006 Felix Fietkau <nbd@nbd.name> -+ * Copyright (C) 2012 Alexandros C. Couloumbis <alex@ozo.com> -+ */ -+ -+#include <linux/kernel.h> -+#include <linux/init.h> -+#include <linux/platform_device.h> -+#include <linux/gpio.h> -+#include <linux/irq.h> -+ -+#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(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.parent = 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); ---- a/arch/mips/ath25/devices.h -+++ b/arch/mips/ath25/devices.h -@@ -4,6 +4,11 @@ - - #include <linux/cpu.h> - -+#define AR231X_GPIO_IRQ_BASE 0x30 -+ -+/* GPIO number for AR2315/16 reset issue workaround */ -+#define AR2315_RESET_GPIO 5 -+ - #define ATH25_REG_MS(_val, _field) (((_val) & _field##_M) >> _field##_S) - - #define ATH25_IRQ_CPU_CLOCK (MIPS_CPU_IRQ_BASE + 7) /* C0_CAUSE: 0x8000 */ ---- a/arch/mips/ath25/ar2315_regs.h -+++ b/arch/mips/ath25/ar2315_regs.h -@@ -315,6 +315,9 @@ - #define AR2315_MEM_CFG_BANKADDR_BITS_M 0x00000018 - #define AR2315_MEM_CFG_BANKADDR_BITS_S 3 - -+/* GPIO MMR base address */ -+#define AR2315_GPIO 0x0088 -+ - /* - * Local Bus Interface Registers - */ |