diff options
author | John Crispin <john@openwrt.org> | 2015-12-10 19:06:32 +0000 |
---|---|---|
committer | John Crispin <john@openwrt.org> | 2015-12-10 19:06:32 +0000 |
commit | 6df4426245be87148d6aa75859951cb6351eb24c (patch) | |
tree | 57a361566f8a505f89b685125d9ab36bba289e19 /target/linux/ramips/patches-3.18/0048-GPIO-ralink-add-mt7621-gpio-controller.patch | |
parent | f2b0ae86983705c98a50ae845403e67c9c412f4d (diff) | |
download | master-31e0f0ae-6df4426245be87148d6aa75859951cb6351eb24c.tar.gz master-31e0f0ae-6df4426245be87148d6aa75859951cb6351eb24c.tar.bz2 master-31e0f0ae-6df4426245be87148d6aa75859951cb6351eb24c.zip |
ralink: bump to the target to v4.3
Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 47831
Diffstat (limited to 'target/linux/ramips/patches-3.18/0048-GPIO-ralink-add-mt7621-gpio-controller.patch')
-rw-r--r-- | target/linux/ramips/patches-3.18/0048-GPIO-ralink-add-mt7621-gpio-controller.patch | 406 |
1 files changed, 0 insertions, 406 deletions
diff --git a/target/linux/ramips/patches-3.18/0048-GPIO-ralink-add-mt7621-gpio-controller.patch b/target/linux/ramips/patches-3.18/0048-GPIO-ralink-add-mt7621-gpio-controller.patch deleted file mode 100644 index 429af73b39..0000000000 --- a/target/linux/ramips/patches-3.18/0048-GPIO-ralink-add-mt7621-gpio-controller.patch +++ /dev/null @@ -1,406 +0,0 @@ -From 8481cdf6f96dc16cbcc129d046c021d17a891274 Mon Sep 17 00:00:00 2001 -From: John Crispin <blogic@openwrt.org> -Date: Sun, 27 Jul 2014 11:00:32 +0100 -Subject: [PATCH 48/57] GPIO: ralink: add mt7621 gpio controller - -Signed-off-by: John Crispin <blogic@openwrt.org> ---- - arch/mips/Kconfig | 3 + - drivers/gpio/Kconfig | 6 ++ - drivers/gpio/Makefile | 1 + - drivers/gpio/gpio-mt7621.c | 177 ++++++++++++++++++++++++++++++++++++++++++++ - 4 files changed, 187 insertions(+) - create mode 100644 drivers/gpio/gpio-mt7621.c - ---- a/arch/mips/Kconfig -+++ b/arch/mips/Kconfig -@@ -455,6 +455,9 @@ config RALINK - select RESET_CONTROLLER - select PINCTRL - select PINCTRL_RT2880 -+ select ARCH_HAS_RESET_CONTROLLER -+ select RESET_CONTROLLER -+ select ARCH_REQUIRE_GPIOLIB - - config SGI_IP22 - bool "SGI IP22 (Indy/Indigo2)" ---- a/drivers/gpio/Kconfig -+++ b/drivers/gpio/Kconfig -@@ -898,6 +898,12 @@ config GPIO_BCM_KONA - help - Turn on GPIO support for Broadcom "Kona" chips. - -+config GPIO_MT7621 -+ bool "Mediatek GPIO Support" -+ depends on SOC_MT7620 || SOC_MT7621 -+ help -+ Say yes here to support the Mediatek SoC GPIO device -+ - comment "USB GPIO expanders:" - - config GPIO_VIPERBOARD ---- a/drivers/gpio/Makefile -+++ b/drivers/gpio/Makefile -@@ -107,3 +107,5 @@ obj-$(CONFIG_GPIO_XILINX) += gpio-xilinx - obj-$(CONFIG_GPIO_XTENSA) += gpio-xtensa.o - obj-$(CONFIG_GPIO_ZEVIO) += gpio-zevio.o - obj-$(CONFIG_GPIO_ZYNQ) += gpio-zynq.o -+obj-$(CONFIG_GPIO_MT7621) += gpio-mt7621.o -+ ---- /dev/null -+++ b/drivers/gpio/gpio-mt7621.c -@@ -0,0 +1,354 @@ -+/* -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of the GNU General Public License version 2 as published -+ * by the Free Software Foundation. -+ * -+ * Copyright (C) 2009-2011 Gabor Juhos <juhosg@openwrt.org> -+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org> -+ */ -+ -+#include <linux/io.h> -+#include <linux/err.h> -+#include <linux/gpio.h> -+#include <linux/module.h> -+#include <linux/of_irq.h> -+#include <linux/spinlock.h> -+#include <linux/irqdomain.h> -+#include <linux/interrupt.h> -+#include <linux/platform_device.h> -+ -+#define MTK_MAX_BANK 3 -+#define MTK_BANK_WIDTH 32 -+ -+enum mediatek_gpio_reg { -+ GPIO_REG_CTRL = 0, -+ GPIO_REG_POL, -+ GPIO_REG_DATA, -+ GPIO_REG_DSET, -+ GPIO_REG_DCLR, -+ GPIO_REG_REDGE, -+ GPIO_REG_FEDGE, -+ GPIO_REG_HLVL, -+ GPIO_REG_LLVL, -+ GPIO_REG_STAT, -+ GPIO_REG_EDGE, -+}; -+ -+static void __iomem *mediatek_gpio_membase; -+static int mediatek_gpio_irq; -+static struct irq_domain *mediatek_gpio_irq_domain; -+static atomic_t irq_refcount = ATOMIC_INIT(0); -+ -+struct mtk_gc { -+ struct gpio_chip chip; -+ spinlock_t lock; -+ int bank; -+ u32 rising; -+ u32 falling; -+} *gc_map[MTK_MAX_BANK]; -+ -+static inline struct mtk_gc -+*to_mediatek_gpio(struct gpio_chip *chip) -+{ -+ struct mtk_gc *mgc; -+ -+ mgc = container_of(chip, struct mtk_gc, chip); -+ -+ return mgc; -+} -+ -+static inline void -+mtk_gpio_w32(struct mtk_gc *rg, u8 reg, u32 val) -+{ -+ iowrite32(val, mediatek_gpio_membase + (reg * 0x10) + (rg->bank * 0x4)); -+} -+ -+static inline u32 -+mtk_gpio_r32(struct mtk_gc *rg, u8 reg) -+{ -+ return ioread32(mediatek_gpio_membase + (reg * 0x10) + (rg->bank * 0x4)); -+} -+ -+static void -+mediatek_gpio_set(struct gpio_chip *chip, unsigned offset, int value) -+{ -+ struct mtk_gc *rg = to_mediatek_gpio(chip); -+ -+ mtk_gpio_w32(rg, (value) ? GPIO_REG_DSET : GPIO_REG_DCLR, BIT(offset)); -+} -+ -+static int -+mediatek_gpio_get(struct gpio_chip *chip, unsigned offset) -+{ -+ struct mtk_gc *rg = to_mediatek_gpio(chip); -+ -+ return !!(mtk_gpio_r32(rg, GPIO_REG_DATA) & BIT(offset)); -+} -+ -+static int -+mediatek_gpio_direction_input(struct gpio_chip *chip, unsigned offset) -+{ -+ struct mtk_gc *rg = to_mediatek_gpio(chip); -+ unsigned long flags; -+ u32 t; -+ -+ spin_lock_irqsave(&rg->lock, flags); -+ t = mtk_gpio_r32(rg, GPIO_REG_CTRL); -+ t &= ~BIT(offset); -+ mtk_gpio_w32(rg, GPIO_REG_CTRL, t); -+ spin_unlock_irqrestore(&rg->lock, flags); -+ -+ return 0; -+} -+ -+static int -+mediatek_gpio_direction_output(struct gpio_chip *chip, -+ unsigned offset, int value) -+{ -+ struct mtk_gc *rg = to_mediatek_gpio(chip); -+ unsigned long flags; -+ u32 t; -+ -+ spin_lock_irqsave(&rg->lock, flags); -+ t = mtk_gpio_r32(rg, GPIO_REG_CTRL); -+ t |= BIT(offset); -+ mtk_gpio_w32(rg, GPIO_REG_CTRL, t); -+ mediatek_gpio_set(chip, offset, value); -+ spin_unlock_irqrestore(&rg->lock, flags); -+ -+ return 0; -+} -+ -+static int -+mediatek_gpio_get_direction(struct gpio_chip *chip, unsigned offset) -+{ -+ struct mtk_gc *rg = to_mediatek_gpio(chip); -+ unsigned long flags; -+ u32 t; -+ -+ spin_lock_irqsave(&rg->lock, flags); -+ t = mtk_gpio_r32(rg, GPIO_REG_CTRL); -+ spin_unlock_irqrestore(&rg->lock, flags); -+ -+ if (t & BIT(offset)) -+ return 0; -+ -+ return 1; -+} -+ -+static int -+mediatek_gpio_to_irq(struct gpio_chip *chip, unsigned pin) -+{ -+ struct mtk_gc *rg = to_mediatek_gpio(chip); -+ -+ return irq_create_mapping(mediatek_gpio_irq_domain, pin + (rg->bank * MTK_BANK_WIDTH)); -+} -+ -+static int -+mediatek_gpio_bank_probe(struct platform_device *pdev, struct device_node *bank) -+{ -+ const __be32 *id = of_get_property(bank, "reg", NULL); -+ struct mtk_gc *rg = devm_kzalloc(&pdev->dev, -+ sizeof(struct mtk_gc), GFP_KERNEL); -+ -+ if (!rg || !id || be32_to_cpu(*id) > MTK_MAX_BANK) -+ return -ENOMEM; -+ -+ gc_map[be32_to_cpu(*id)] = rg; -+ -+ memset(rg, 0, sizeof(struct mtk_gc)); -+ -+ spin_lock_init(&rg->lock); -+ -+ rg->chip.dev = &pdev->dev; -+ rg->chip.label = dev_name(&pdev->dev); -+ rg->chip.of_node = bank; -+ rg->chip.base = MTK_BANK_WIDTH * be32_to_cpu(*id); -+ rg->chip.ngpio = MTK_BANK_WIDTH; -+ rg->chip.direction_input = mediatek_gpio_direction_input; -+ rg->chip.direction_output = mediatek_gpio_direction_output; -+ rg->chip.get_direction = mediatek_gpio_get_direction; -+ rg->chip.get = mediatek_gpio_get; -+ rg->chip.set = mediatek_gpio_set; -+ if (mediatek_gpio_irq_domain) -+ rg->chip.to_irq = mediatek_gpio_to_irq; -+ rg->bank = be32_to_cpu(*id); -+ -+ /* set polarity to low for all gpios */ -+ mtk_gpio_w32(rg, GPIO_REG_POL, 0); -+ -+ dev_info(&pdev->dev, "registering %d gpios\n", rg->chip.ngpio); -+ -+ return gpiochip_add(&rg->chip); -+} -+ -+static void -+mediatek_gpio_irq_handler(unsigned int irq, struct irq_desc *desc) -+{ -+ int i; -+ -+ for (i = 0; i < MTK_MAX_BANK; i++) { -+ struct mtk_gc *rg = gc_map[i]; -+ unsigned long pending; -+ int bit; -+ -+ if (!rg) -+ continue; -+ -+ pending = mtk_gpio_r32(rg, GPIO_REG_STAT); -+ -+ for_each_set_bit(bit, &pending, MTK_BANK_WIDTH) { -+ u32 map = irq_find_mapping(mediatek_gpio_irq_domain, (MTK_BANK_WIDTH * i) + bit); -+ -+ generic_handle_irq(map); -+ mtk_gpio_w32(rg, GPIO_REG_STAT, BIT(bit)); -+ } -+ } -+} -+ -+static void -+mediatek_gpio_irq_unmask(struct irq_data *d) -+{ -+ int pin = d->hwirq; -+ int bank = pin / 32; -+ struct mtk_gc *rg = gc_map[bank]; -+ unsigned long flags; -+ u32 rise, fall; -+ -+ if (!rg) -+ return; -+ -+ rise = mtk_gpio_r32(rg, GPIO_REG_REDGE); -+ fall = mtk_gpio_r32(rg, GPIO_REG_FEDGE); -+ -+ spin_lock_irqsave(&rg->lock, flags); -+ mtk_gpio_w32(rg, GPIO_REG_REDGE, rise | (BIT(d->hwirq) & rg->rising)); -+ mtk_gpio_w32(rg, GPIO_REG_FEDGE, fall | (BIT(d->hwirq) & rg->falling)); -+ spin_unlock_irqrestore(&rg->lock, flags); -+} -+ -+static void -+mediatek_gpio_irq_mask(struct irq_data *d) -+{ -+ int pin = d->hwirq; -+ int bank = pin / 32; -+ struct mtk_gc *rg = gc_map[bank]; -+ unsigned long flags; -+ u32 rise, fall; -+ -+ if (!rg) -+ return; -+ -+ rise = mtk_gpio_r32(rg, GPIO_REG_REDGE); -+ fall = mtk_gpio_r32(rg, GPIO_REG_FEDGE); -+ -+ spin_lock_irqsave(&rg->lock, flags); -+ mtk_gpio_w32(rg, GPIO_REG_FEDGE, fall & ~BIT(d->hwirq)); -+ mtk_gpio_w32(rg, GPIO_REG_REDGE, rise & ~BIT(d->hwirq)); -+ spin_unlock_irqrestore(&rg->lock, flags); -+} -+ -+static int -+mediatek_gpio_irq_type(struct irq_data *d, unsigned int type) -+{ -+ int pin = d->hwirq; -+ int bank = pin / 32; -+ struct mtk_gc *rg = gc_map[bank]; -+ u32 mask = BIT(d->hwirq); -+ -+ if (!rg) -+ return -1; -+ -+ if (type == IRQ_TYPE_PROBE) { -+ if ((rg->rising | rg->falling) & mask) -+ return 0; -+ -+ type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING; -+ } -+ -+ if (type & IRQ_TYPE_EDGE_RISING) -+ rg->rising |= mask; -+ else -+ rg->rising &= ~mask; -+ -+ if (type & IRQ_TYPE_EDGE_FALLING) -+ rg->falling |= mask; -+ else -+ rg->falling &= ~mask; -+ -+ return 0; -+} -+ -+static struct irq_chip mediatek_gpio_irq_chip = { -+ .name = "GPIO", -+ .irq_unmask = mediatek_gpio_irq_unmask, -+ .irq_mask = mediatek_gpio_irq_mask, -+ .irq_mask_ack = mediatek_gpio_irq_mask, -+ .irq_set_type = mediatek_gpio_irq_type, -+}; -+ -+static int -+mediatek_gpio_gpio_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw) -+{ -+ irq_set_chip_and_handler(irq, &mediatek_gpio_irq_chip, handle_level_irq); -+ irq_set_handler_data(irq, d); -+ -+ return 0; -+} -+ -+static const struct irq_domain_ops irq_domain_ops = { -+ .xlate = irq_domain_xlate_onecell, -+ .map = mediatek_gpio_gpio_map, -+}; -+ -+static int -+mediatek_gpio_probe(struct platform_device *pdev) -+{ -+ struct device_node *bank, *np = pdev->dev.of_node; -+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ -+ mediatek_gpio_membase = devm_ioremap_resource(&pdev->dev, res); -+ if (IS_ERR(mediatek_gpio_membase)) -+ return PTR_ERR(mediatek_gpio_membase); -+ -+ mediatek_gpio_irq = irq_of_parse_and_map(np, 0); -+ if (mediatek_gpio_irq) { -+ mediatek_gpio_irq_domain = irq_domain_add_linear(np, -+ MTK_MAX_BANK * MTK_BANK_WIDTH, -+ &irq_domain_ops, NULL); -+ if (!mediatek_gpio_irq_domain) -+ dev_err(&pdev->dev, "irq_domain_add_linear failed\n"); -+ } -+ -+ for_each_child_of_node(np, bank) -+ if (of_device_is_compatible(bank, "mtk,mt7621-gpio-bank")) -+ mediatek_gpio_bank_probe(pdev, bank); -+ -+ if (mediatek_gpio_irq_domain) -+ irq_set_chained_handler(mediatek_gpio_irq, mediatek_gpio_irq_handler); -+ -+ return 0; -+} -+ -+static const struct of_device_id mediatek_gpio_match[] = { -+ { .compatible = "mtk,mt7621-gpio" }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, mediatek_gpio_match); -+ -+static struct platform_driver mediatek_gpio_driver = { -+ .probe = mediatek_gpio_probe, -+ .driver = { -+ .name = "mt7621_gpio", -+ .owner = THIS_MODULE, -+ .of_match_table = mediatek_gpio_match, -+ }, -+}; -+ -+static int __init -+mediatek_gpio_init(void) -+{ -+ return platform_driver_register(&mediatek_gpio_driver); -+} -+ -+subsys_initcall(mediatek_gpio_init); |