Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver changes from Olof Johansson:
 "This is a rather large set of patches for device drivers that for one
  reason or another the subsystem maintainer preferred to get merged
  through the arm-soc tree.  There are both new drivers as well as
  existing drivers that are getting converted from platform-specific
  code into standalone drivers using the appropriate subsystem specific
  interfaces.

  In particular, we can now have pinctrl, clk, clksource and irqchip
  drivers in one file per driver, without the need to call into platform
  specific interface, or to get called from platform specific code, as
  long as all information about the hardware is provided through a
  device tree.

  Most of the drivers we touch this time are for clocksource.  Since now
  most of them are part of drivers/clocksource, I expect that we won't
  have to touch these again from arm-soc and can let the clocksource
  maintainers take care of these in the future.

  Another larger part of this series is specific to the exynos platform,
  which is seeing some significant effort in upstreaming and
  modernization of its device drivers this time around, which
  unfortunately is also the cause for the churn and a lot of the merge
  conflicts.

  There is one new subsystem that gets merged as part of this series:
  the reset controller interface, which is a very simple interface for
  taking devices on the SoC out of reset or back into reset.  Patches to
  use this interface on i.MX follow later in this merge window, and we
  are going to have other platforms (at least tegra and sirf) get
  converted in 3.11.  This will let us get rid of platform specific
  callbacks in a number of platform independent device drivers."

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (256 commits)
  irqchip: s3c24xx: add missing __init annotations
  ARM: dts: Disable the RTC by default on exynos5
  clk: exynos5250: Fix parent clock for sclk_mmc{0,1,2,3}
  ARM: exynos: restore mach/regs-clock.h for exynos5
  clocksource: exynos_mct: fix build error on non-DT
  pinctrl: vt8500: wmt: Fix checking return value of pinctrl_register()
  irqchip: vt8500: Convert arch-vt8500 to new irqchip infrastructure
  reset: NULL deref on allocation failure
  reset: Add reset controller API
  dt: describe base reset signal binding
  ARM: EXYNOS: Add arm-pmu DT binding for exynos421x
  ARM: EXYNOS: Add arm-pmu DT binding for exynos5250
  ARM: EXYNOS: Enable PMUs for exynos4
  irqchip: exynos-combiner: Correct combined IRQs for exynos4
  irqchip: exynos-combiner: Add set_irq_affinity function for combiner_irq
  ARM: EXYNOS: fix compilation error introduced due to common clock migration
  clk: exynos5250: Fix divider values for sclk_mmc{0,1,2,3}
  clk: exynos4: export clocks required for fimc-is
  clk: samsung: Fix compilation error
  clk: tegra: fix enum tegra114_clk to match binding
  ...

4 files changed, 7 insertions, 364 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 93aaadf99f28..b166e30b3bc4 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -227,12 +227,6 @@ config GPIO_TS5500
 	  blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
 	  LCD port.
 
-config GPIO_VT8500
-	bool "VIA/Wondermedia SoC GPIO Support"
-	depends on ARCH_VT8500
-	help
-	  Say yes here to support the VT8500/WM8505/WM8650 GPIO controller.
-
 config GPIO_XILINX
 	bool "Xilinx GPIO support"
 	depends on PPC_OF || MICROBLAZE
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 22e07bc9fcb5..a274d7df3c8c 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -80,7 +80,6 @@ obj-$(CONFIG_GPIO_TWL6040)	+= gpio-twl6040.o
 obj-$(CONFIG_GPIO_UCB1400)	+= gpio-ucb1400.o
 obj-$(CONFIG_GPIO_VIPERBOARD)	+= gpio-viperboard.o
 obj-$(CONFIG_GPIO_VR41XX)	+= gpio-vr41xx.o
-obj-$(CONFIG_GPIO_VT8500)	+= gpio-vt8500.o
 obj-$(CONFIG_GPIO_VX855)	+= gpio-vx855.o
 obj-$(CONFIG_GPIO_WM831X)	+= gpio-wm831x.o
 obj-$(CONFIG_GPIO_WM8350)	+= gpio-wm8350.o
diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
index b3643ff007e4..99e0fa49fcbd 100644
--- a/drivers/gpio/gpio-samsung.c
+++ b/drivers/gpio/gpio-samsung.c
@@ -1122,8 +1122,12 @@ int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
 #ifdef CONFIG_PLAT_S3C24XX
 static int s3c24xx_gpiolib_fbank_to_irq(struct gpio_chip *chip, unsigned offset)
 {
-	if (offset < 4)
-		return IRQ_EINT0 + offset;
+	if (offset < 4) {
+		if (soc_is_s3c2412())
+			return IRQ_EINT0_2412 + offset;
+		else
+			return IRQ_EINT0 + offset;
+	}
 
 	if (offset < 8)
 		return IRQ_EINT4 + offset - 4;
@@ -3024,6 +3028,7 @@ static __init int samsung_gpiolib_init(void)
 	static const struct of_device_id exynos_pinctrl_ids[] = {
 		{ .compatible = "samsung,exynos4210-pinctrl", },
 		{ .compatible = "samsung,exynos4x12-pinctrl", },
+		{ .compatible = "samsung,exynos5250-pinctrl", },
 		{ .compatible = "samsung,exynos5440-pinctrl", },
 	};
 	for_each_matching_node(pctrl_np, exynos_pinctrl_ids)
diff --git a/drivers/gpio/gpio-vt8500.c b/drivers/gpio/gpio-vt8500.c
deleted file mode 100644
index 81683ca35ac1..000000000000
--- a/drivers/gpio/gpio-vt8500.c
+++ /dev/null
@@ -1,355 +0,0 @@
-/* drivers/gpio/gpio-vt8500.c
- *
- * Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
- * Based on arch/arm/mach-vt8500/gpio.c:
- * - Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-#include <linux/platform_device.h>
-#include <linux/bitops.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/of_device.h>
-
-/*
-	We handle GPIOs by bank, each bank containing up to 32 GPIOs covered
-	by one set of registers (although not all may be valid).
-
-	Because different SoC's have different register offsets, we pass the
-	register offsets as data in vt8500_gpio_dt_ids[].
-
-	A value of NO_REG is used to indicate that this register is not
-	supported. Only used for ->en at the moment.
-*/
-
-#define NO_REG	0xFFFF
-
-/*
- * struct vt8500_gpio_bank_regoffsets
- * @en: offset to enable register of the bank
- * @dir: offset to direction register of the bank
- * @data_out: offset to the data out register of the bank
- * @data_in: offset to the data in register of the bank
- * @ngpio: highest valid pin in this bank
- */
-
-struct vt8500_gpio_bank_regoffsets {
-	unsigned int	en;
-	unsigned int	dir;
-	unsigned int	data_out;
-	unsigned int	data_in;
-	unsigned char	ngpio;
-};
-
-struct vt8500_gpio_data {
-	unsigned int				num_banks;
-	struct vt8500_gpio_bank_regoffsets	banks[];
-};
-
-#define VT8500_BANK(__en, __dir, __out, __in, __ngpio)		\
-{								\
-	.en = __en,						\
-	.dir = __dir,						\
-	.data_out = __out,					\
-	.data_in = __in,					\
-	.ngpio = __ngpio,					\
-}
-
-static struct vt8500_gpio_data vt8500_data = {
-	.num_banks	= 7,
-	.banks	= {
-		VT8500_BANK(NO_REG, 0x3C, 0x5C, 0x7C, 9),
-		VT8500_BANK(0x00, 0x20, 0x40, 0x60, 26),
-		VT8500_BANK(0x04, 0x24, 0x44, 0x64, 28),
-		VT8500_BANK(0x08, 0x28, 0x48, 0x68, 31),
-		VT8500_BANK(0x0C, 0x2C, 0x4C, 0x6C, 19),
-		VT8500_BANK(0x10, 0x30, 0x50, 0x70, 19),
-		VT8500_BANK(0x14, 0x34, 0x54, 0x74, 23),
-	},
-};
-
-static struct vt8500_gpio_data wm8505_data = {
-	.num_banks	= 10,
-	.banks	= {
-		VT8500_BANK(0x64, 0x8C, 0xB4, 0xDC, 22),
-		VT8500_BANK(0x40, 0x68, 0x90, 0xB8, 8),
-		VT8500_BANK(0x44, 0x6C, 0x94, 0xBC, 32),
-		VT8500_BANK(0x48, 0x70, 0x98, 0xC0, 6),
-		VT8500_BANK(0x4C, 0x74, 0x9C, 0xC4, 16),
-		VT8500_BANK(0x50, 0x78, 0xA0, 0xC8, 25),
-		VT8500_BANK(0x54, 0x7C, 0xA4, 0xCC, 5),
-		VT8500_BANK(0x58, 0x80, 0xA8, 0xD0, 5),
-		VT8500_BANK(0x5C, 0x84, 0xAC, 0xD4, 12),
-		VT8500_BANK(0x60, 0x88, 0xB0, 0xD8, 16),
-		VT8500_BANK(0x500, 0x504, 0x508, 0x50C, 6),
-	},
-};
-
-/*
- * No information about which bits are valid so we just make
- * them all available until its figured out.
- */
-static struct vt8500_gpio_data wm8650_data = {
-	.num_banks	= 9,
-	.banks	= {
-		VT8500_BANK(0x40, 0x80, 0xC0, 0x00, 32),
-		VT8500_BANK(0x44, 0x84, 0xC4, 0x04, 32),
-		VT8500_BANK(0x48, 0x88, 0xC8, 0x08, 32),
-		VT8500_BANK(0x4C, 0x8C, 0xCC, 0x0C, 32),
-		VT8500_BANK(0x50, 0x90, 0xD0, 0x10, 32),
-		VT8500_BANK(0x54, 0x94, 0xD4, 0x14, 32),
-		VT8500_BANK(0x58, 0x98, 0xD8, 0x18, 32),
-		VT8500_BANK(0x5C, 0x9C, 0xDC, 0x1C, 32),
-		VT8500_BANK(0x7C, 0xBC, 0xFC, 0x3C, 32),
-		VT8500_BANK(0x500, 0x504, 0x508, 0x50C, 6),
-	},
-};
-
-struct vt8500_gpio_chip {
-	struct gpio_chip		chip;
-
-	const struct vt8500_gpio_bank_regoffsets *regs;
-	void __iomem	*base;
-};
-
-struct vt8500_data {
-	struct vt8500_gpio_chip *chip;
-	void __iomem *iobase;
-	int num_banks;
-};
-
-
-#define to_vt8500(__chip) container_of(__chip, struct vt8500_gpio_chip, chip)
-
-static int vt8500_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	u32 val;
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-
-	if (vt8500_chip->regs->en == NO_REG)
-		return 0;
-
-	val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->en);
-	val |= BIT(offset);
-	writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->en);
-
-	return 0;
-}
-
-static void vt8500_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-	u32 val;
-
-	if (vt8500_chip->regs->en == NO_REG)
-		return;
-
-	val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->en);
-	val &= ~BIT(offset);
-	writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->en);
-}
-
-static int vt8500_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-
-	u32 val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->dir);
-	val &= ~BIT(offset);
-	writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->dir);
-
-	return 0;
-}
-
-static int vt8500_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
-								int value)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-
-	u32 val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->dir);
-	val |= BIT(offset);
-	writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->dir);
-
-	if (value) {
-		val = readl_relaxed(vt8500_chip->base +
-						vt8500_chip->regs->data_out);
-		val |= BIT(offset);
-		writel_relaxed(val, vt8500_chip->base +
-						vt8500_chip->regs->data_out);
-	}
-	return 0;
-}
-
-static int vt8500_gpio_get_value(struct gpio_chip *chip, unsigned offset)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-
-	return (readl_relaxed(vt8500_chip->base + vt8500_chip->regs->data_in) >>
-								offset) & 1;
-}
-
-static void vt8500_gpio_set_value(struct gpio_chip *chip, unsigned offset,
-								int value)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-
-	u32 val = readl_relaxed(vt8500_chip->base +
-						vt8500_chip->regs->data_out);
-	if (value)
-		val |= BIT(offset);
-	else
-		val &= ~BIT(offset);
-
-	writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->data_out);
-}
-
-static int vt8500_of_xlate(struct gpio_chip *gc,
-			    const struct of_phandle_args *gpiospec, u32 *flags)
-{
-	/* bank if specificed in gpiospec->args[0] */
-	if (flags)
-		*flags = gpiospec->args[2];
-
-	return gpiospec->args[1];
-}
-
-static int vt8500_add_chips(struct platform_device *pdev, void __iomem *base,
-				const struct vt8500_gpio_data *data)
-{
-	struct vt8500_data *priv;
-	struct vt8500_gpio_chip *vtchip;
-	struct gpio_chip *chip;
-	int i;
-	int pin_cnt = 0;
-
-	priv = devm_kzalloc(&pdev->dev, sizeof(struct vt8500_data), GFP_KERNEL);
-	if (!priv) {
-		dev_err(&pdev->dev, "failed to allocate memory\n");
-		return -ENOMEM;
-	}
-
-	priv->chip = devm_kzalloc(&pdev->dev,
-			sizeof(struct vt8500_gpio_chip) * data->num_banks,
-			GFP_KERNEL);
-	if (!priv->chip) {
-		dev_err(&pdev->dev, "failed to allocate chip memory\n");
-		return -ENOMEM;
-	}
-
-	priv->iobase = base;
-	priv->num_banks = data->num_banks;
-	platform_set_drvdata(pdev, priv);
-
-	vtchip = priv->chip;
-
-	for (i = 0; i < data->num_banks; i++) {
-		vtchip[i].base = base;
-		vtchip[i].regs = &data->banks[i];
-
-		chip = &vtchip[i].chip;
-
-		chip->of_xlate = vt8500_of_xlate;
-		chip->of_gpio_n_cells = 3;
-		chip->of_node = pdev->dev.of_node;
-
-		chip->request = vt8500_gpio_request;
-		chip->free = vt8500_gpio_free;
-		chip->direction_input = vt8500_gpio_direction_input;
-		chip->direction_output = vt8500_gpio_direction_output;
-		chip->get = vt8500_gpio_get_value;
-		chip->set = vt8500_gpio_set_value;
-		chip->can_sleep = 0;
-		chip->base = pin_cnt;
-		chip->ngpio = data->banks[i].ngpio;
-
-		pin_cnt += data->banks[i].ngpio;
-
-		gpiochip_add(chip);
-	}
-	return 0;
-}
-
-static struct of_device_id vt8500_gpio_dt_ids[] = {
-	{ .compatible = "via,vt8500-gpio", .data = &vt8500_data, },
-	{ .compatible = "wm,wm8505-gpio", .data = &wm8505_data, },
-	{ .compatible = "wm,wm8650-gpio", .data = &wm8650_data, },
-	{ /* Sentinel */ },
-};
-
-static int vt8500_gpio_probe(struct platform_device *pdev)
-{
-	int ret;
-	void __iomem *gpio_base;
-	struct resource *res;
-	const struct of_device_id *of_id =
-				of_match_device(vt8500_gpio_dt_ids, &pdev->dev);
-
-	if (!of_id) {
-		dev_err(&pdev->dev, "No matching driver data\n");
-		return -ENODEV;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "Unable to get IO resource\n");
-		return -ENODEV;
-	}
-
-	gpio_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!gpio_base) {
-		dev_err(&pdev->dev, "Unable to map GPIO registers\n");
-		return -ENOMEM;
-	}
-
-	ret = vt8500_add_chips(pdev, gpio_base, of_id->data);
-
-	return ret;
-}
-
-static int vt8500_gpio_remove(struct platform_device *pdev)
-{
-	int i;
-	int ret;
-	struct vt8500_data *priv = platform_get_drvdata(pdev);
-	struct vt8500_gpio_chip *vtchip = priv->chip;
-
-	for (i = 0; i < priv->num_banks; i++) {
-		ret = gpiochip_remove(&vtchip[i].chip);
-		if (ret)
-			dev_warn(&pdev->dev, "gpiochip_remove returned %d\n",
-				 ret);
-	}
-
-	return 0;
-}
-
-static struct platform_driver vt8500_gpio_driver = {
-	.probe		= vt8500_gpio_probe,
-	.remove		= vt8500_gpio_remove,
-	.driver		= {
-		.name	= "vt8500-gpio",
-		.owner	= THIS_MODULE,
-		.of_match_table = vt8500_gpio_dt_ids,
-	},
-};
-
-module_platform_driver(vt8500_gpio_driver);
-
-MODULE_DESCRIPTION("VT8500 GPIO Driver");
-MODULE_AUTHOR("Tony Prisk <linux@prisktech.co.nz>");
-MODULE_LICENSE("GPL v2");
-MODULE_DEVICE_TABLE(of, vt8500_gpio_dt_ids);