ralink: bump to the target to v4.3

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 47831

1 files changed, 417 insertions, 0 deletions

diff --git a/target/linux/ramips/patches-4.3/0028-GPIO-ralink-add-mt7621-gpio-controller.patch b/target/linux/ramips/patches-4.3/0028-GPIO-ralink-add-mt7621-gpio-controller.patch
new file mode 100644
index 0000000000..9e16aa3c4d
--- /dev/null
+++ b/target/linux/ramips/patches-4.3/0028-GPIO-ralink-add-mt7621-gpio-controller.patch
@@ -0,0 +1,417 @@
+From 61ac7d9b4228de8c332900902c2b93189b042eab Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Sun, 27 Jul 2014 11:00:32 +0100
+Subject: [PATCH 28/53] 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 |  354 ++++++++++++++++++++++++++++++++++++++++++++
+ 4 files changed, 364 insertions(+)
+ create mode 100644 drivers/gpio/gpio-mt7621.c
+
+diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
+index 0098bff..94ea345 100644
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -559,6 +559,9 @@ 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)"
+diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
+index 4a3e7df..13f860c 100644
+--- a/drivers/gpio/Kconfig
++++ b/drivers/gpio/Kconfig
+@@ -269,6 +269,12 @@ config GPIO_MB86S7X
+ 	help
+ 	  Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
+ 
++config GPIO_MT7621
++	bool "Mediatek GPIO Support"
++	depends on SOC_MT7620 || SOC_MT7621
++	help
++	  Say yes here to support the Mediatek SoC GPIO device
++
+ config GPIO_MM_LANTIQ
+ 	bool "Lantiq Memory mapped GPIOs"
+ 	depends on LANTIQ && SOC_XWAY
+diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
+index 13448d78..5563d6e 100644
+--- a/drivers/gpio/Makefile
++++ b/drivers/gpio/Makefile
+@@ -119,3 +119,4 @@ obj-$(CONFIG_GPIO_XTENSA)	+= gpio-xtensa.o
+ obj-$(CONFIG_GPIO_ZEVIO)	+= gpio-zevio.o
+ obj-$(CONFIG_GPIO_ZYNQ)		+= gpio-zynq.o
+ obj-$(CONFIG_GPIO_ZX)		+= gpio-zx.o
++obj-$(CONFIG_GPIO_MT7621)	+= gpio-mt7621.o
+diff --git a/drivers/gpio/gpio-mt7621.c b/drivers/gpio/gpio-mt7621.c
+new file mode 100644
+index 0000000..7a98b94
+--- /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);
+-- 
+1.7.10.4
+