Commit cab18d19 authored by Olof Johansson's avatar Olof Johansson
Browse files

Merge branch 'depends/gpio-devel' into next/soc 



This is required for some of the clps711x series, so we're bringing in
the dependency explicitly.

By Linus Walleij (5) and others
via Linus Walleij
* depends/gpio-devel:
  GPIO: clps711x: use platform_device_unregister in gpio_clps711x_init()
  gpio/tc3589x: convert to use the simple irqdomain
  gpio/em: convert to linear IRQ domain
  gpio/mvebu: convert to use irq_domain_add_simple()
  gpio/tegra: convert to use linear irqdomain
  gpiolib: unlock on error in gpio_export()
  gpiolib: add gpio get direction callback support
  GPIO: clps711x: Fix direction logic for PORTD
  GPIO: clps711x: Fix return value for gpio_clps711x_get
  gpiolib: Refactor gpio_export
  GPIO: vt8500: Add extended gpio bank for WM8505/WM8650
  gpio: clps711x: delete local <mach/gpio.h> header
  GPIO: Add support for GPIO on CLPS711X-target platform
  DA9055 GPIO driver
  gpio/gpio-omap: Use existing pointer to struct device
  gpio/gpio-pl061: Covert to use devm_* functions

Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
parents c3e5dba4 2cad6a8a

arch/arm/Kconfig

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@@ -367,6 +367,8 @@ config ARCH_CNS3XXX 


config ARCH_CLPS711X

	bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"

	select ARCH_REQUIRE_GPIOLIB

	select ARCH_USES_GETTIMEOFFSET

	select CLKDEV_LOOKUP

	select COMMON_CLK

	select CPU_ARM720T

drivers/gpio/Kconfig

+15 −0
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@@ -86,11 +86,26 @@ config GPIO_DA9052 
	help

	  Say yes here to enable the GPIO driver for the DA9052 chip.



config GPIO_DA9055

	tristate "Dialog Semiconductor DA9055 GPIO"

	depends on MFD_DA9055

	help

	  Say yes here to enable the GPIO driver for the DA9055 chip.



	  The Dialog DA9055 PMIC chip has 3 GPIO pins that can be

	  be controller by this driver.



	  If driver is built as a module it will be called gpio-da9055.



config GPIO_MAX730X

	tristate



comment "Memory mapped GPIO drivers:"



config GPIO_CLPS711X

	def_bool y

	depends on ARCH_CLPS711X



config GPIO_GENERIC_PLATFORM

	tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"

	select GPIO_GENERIC

drivers/gpio/Makefile

+2 −0
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@@ -16,8 +16,10 @@ obj-$(CONFIG_GPIO_ADP5588) += gpio-adp5588.o 
obj-$(CONFIG_GPIO_AMD8111)	+= gpio-amd8111.o

obj-$(CONFIG_GPIO_ARIZONA)	+= gpio-arizona.o

obj-$(CONFIG_GPIO_BT8XX)	+= gpio-bt8xx.o

obj-$(CONFIG_GPIO_CLPS711X)	+= gpio-clps711x.o

obj-$(CONFIG_GPIO_CS5535)	+= gpio-cs5535.o

obj-$(CONFIG_GPIO_DA9052)	+= gpio-da9052.o

obj-$(CONFIG_GPIO_DA9055)	+= gpio-da9055.o

obj-$(CONFIG_ARCH_DAVINCI)	+= gpio-davinci.o

obj-$(CONFIG_GPIO_EM)		+= gpio-em.o

obj-$(CONFIG_GPIO_EP93XX)	+= gpio-ep93xx.o

drivers/gpio/gpio-clps711x.c

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/*

 *  CLPS711X GPIO driver

 *

 *  Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 */



#include <linux/io.h>

#include <linux/slab.h>

#include <linux/gpio.h>

#include <linux/module.h>

#include <linux/spinlock.h>

#include <linux/platform_device.h>



#include <mach/hardware.h>



#define CLPS711X_GPIO_PORTS	5

#define CLPS711X_GPIO_NAME	"gpio-clps711x"



struct clps711x_gpio {

	struct gpio_chip	chip[CLPS711X_GPIO_PORTS];

	spinlock_t		lock;

};



static void __iomem *clps711x_ports[] = {

	CLPS711X_VIRT_BASE + PADR,

	CLPS711X_VIRT_BASE + PBDR,

	CLPS711X_VIRT_BASE + PCDR,

	CLPS711X_VIRT_BASE + PDDR,

	CLPS711X_VIRT_BASE + PEDR,

};



static void __iomem *clps711x_pdirs[] = {

	CLPS711X_VIRT_BASE + PADDR,

	CLPS711X_VIRT_BASE + PBDDR,

	CLPS711X_VIRT_BASE + PCDDR,

	CLPS711X_VIRT_BASE + PDDDR,

	CLPS711X_VIRT_BASE + PEDDR,

};



#define clps711x_port(x)	clps711x_ports[x->base / 8]

#define clps711x_pdir(x)	clps711x_pdirs[x->base / 8]



static int gpio_clps711x_get(struct gpio_chip *chip, unsigned offset)

{

	return !!(readb(clps711x_port(chip)) & (1 << offset));

}



static void gpio_clps711x_set(struct gpio_chip *chip, unsigned offset,

			      int value)

{

	int tmp;

	unsigned long flags;

	struct clps711x_gpio *gpio = dev_get_drvdata(chip->dev);



	spin_lock_irqsave(&gpio->lock, flags);

	tmp = readb(clps711x_port(chip)) & ~(1 << offset);

	if (value)

		tmp |= 1 << offset;

	writeb(tmp, clps711x_port(chip));

	spin_unlock_irqrestore(&gpio->lock, flags);

}



static int gpio_clps711x_dir_in(struct gpio_chip *chip, unsigned offset)

{

	int tmp;

	unsigned long flags;

	struct clps711x_gpio *gpio = dev_get_drvdata(chip->dev);



	spin_lock_irqsave(&gpio->lock, flags);

	tmp = readb(clps711x_pdir(chip)) & ~(1 << offset);

	writeb(tmp, clps711x_pdir(chip));

	spin_unlock_irqrestore(&gpio->lock, flags);



	return 0;

}



static int gpio_clps711x_dir_out(struct gpio_chip *chip, unsigned offset,

				 int value)

{

	int tmp;

	unsigned long flags;

	struct clps711x_gpio *gpio = dev_get_drvdata(chip->dev);



	spin_lock_irqsave(&gpio->lock, flags);

	tmp = readb(clps711x_pdir(chip)) | (1 << offset);

	writeb(tmp, clps711x_pdir(chip));

	tmp = readb(clps711x_port(chip)) & ~(1 << offset);

	if (value)

		tmp |= 1 << offset;

	writeb(tmp, clps711x_port(chip));

	spin_unlock_irqrestore(&gpio->lock, flags);



	return 0;

}



static int gpio_clps711x_dir_in_inv(struct gpio_chip *chip, unsigned offset)

{

	int tmp;

	unsigned long flags;

	struct clps711x_gpio *gpio = dev_get_drvdata(chip->dev);



	spin_lock_irqsave(&gpio->lock, flags);

	tmp = readb(clps711x_pdir(chip)) | (1 << offset);

	writeb(tmp, clps711x_pdir(chip));

	spin_unlock_irqrestore(&gpio->lock, flags);



	return 0;

}



static int gpio_clps711x_dir_out_inv(struct gpio_chip *chip, unsigned offset,

				     int value)

{

	int tmp;

	unsigned long flags;

	struct clps711x_gpio *gpio = dev_get_drvdata(chip->dev);



	spin_lock_irqsave(&gpio->lock, flags);

	tmp = readb(clps711x_pdir(chip)) & ~(1 << offset);

	writeb(tmp, clps711x_pdir(chip));

	tmp = readb(clps711x_port(chip)) & ~(1 << offset);

	if (value)

		tmp |= 1 << offset;

	writeb(tmp, clps711x_port(chip));

	spin_unlock_irqrestore(&gpio->lock, flags);



	return 0;

}



static struct {

	char	*name;

	int	nr;

	int	inv_dir;

} clps711x_gpio_ports[] __initconst = {

	{ "PORTA", 8, 0, },

	{ "PORTB", 8, 0, },

	{ "PORTC", 8, 0, },

	{ "PORTD", 8, 1, },

	{ "PORTE", 3, 0, },

};



static int __init gpio_clps711x_init(void)

{

	int i;

	struct platform_device *pdev;

	struct clps711x_gpio *gpio;



	pdev = platform_device_alloc(CLPS711X_GPIO_NAME, 0);

	if (!pdev) {

		pr_err("Cannot create platform device: %s\n",

		       CLPS711X_GPIO_NAME);

		return -ENOMEM;

	}



	platform_device_add(pdev);



	gpio = devm_kzalloc(&pdev->dev, sizeof(struct clps711x_gpio),

			    GFP_KERNEL);

	if (!gpio) {

		dev_err(&pdev->dev, "GPIO allocating memory error\n");

		platform_device_unregister(pdev);

		return -ENOMEM;

	}



	platform_set_drvdata(pdev, gpio);



	spin_lock_init(&gpio->lock);



	for (i = 0; i < CLPS711X_GPIO_PORTS; i++) {

		gpio->chip[i].owner		= THIS_MODULE;

		gpio->chip[i].dev		= &pdev->dev;

		gpio->chip[i].label		= clps711x_gpio_ports[i].name;

		gpio->chip[i].base		= i * 8;

		gpio->chip[i].ngpio		= clps711x_gpio_ports[i].nr;

		gpio->chip[i].get		= gpio_clps711x_get;

		gpio->chip[i].set		= gpio_clps711x_set;

		if (!clps711x_gpio_ports[i].inv_dir) {

			gpio->chip[i].direction_input = gpio_clps711x_dir_in;

			gpio->chip[i].direction_output = gpio_clps711x_dir_out;

		} else {

			gpio->chip[i].direction_input = gpio_clps711x_dir_in_inv;

			gpio->chip[i].direction_output = gpio_clps711x_dir_out_inv;

		}

		WARN_ON(gpiochip_add(&gpio->chip[i]));

	}



	dev_info(&pdev->dev, "GPIO driver initialized\n");



	return 0;

}

arch_initcall(gpio_clps711x_init);



MODULE_LICENSE("GPL v2");

MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");

MODULE_DESCRIPTION("CLPS711X GPIO driver");

drivers/gpio/gpio-da9055.c

0 → 100644
+204 −0
Original line number Diff line number Diff line 
/*

 * GPIO Driver for Dialog DA9055 PMICs.

 *

 * Copyright(c) 2012 Dialog Semiconductor Ltd.

 *

 * Author: David Dajun Chen <dchen@diasemi.com>

 *

 *  This program is free software; you can redistribute  it and/or modify it

 *  under  the terms of  the GNU General  Public License as published by the

 *  Free Software Foundation;  either version 2 of the  License, or (at your

 *  option) any later version.

 *

 */

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/gpio.h>



#include <linux/mfd/da9055/core.h>

#include <linux/mfd/da9055/reg.h>

#include <linux/mfd/da9055/pdata.h>



#define DA9055_VDD_IO			0x0

#define DA9055_PUSH_PULL		0x3

#define DA9055_ACT_LOW			0x0

#define DA9055_GPI			0x1

#define DA9055_PORT_MASK		0x3

#define DA9055_PORT_SHIFT(offset)	(4 * (offset % 2))



#define DA9055_INPUT			DA9055_GPI

#define DA9055_OUTPUT			DA9055_PUSH_PULL

#define DA9055_IRQ_GPI0			3



struct da9055_gpio {

	struct da9055 *da9055;

	struct gpio_chip gp;

};



static inline struct da9055_gpio *to_da9055_gpio(struct gpio_chip *chip)

{

	return container_of(chip, struct da9055_gpio, gp);

}



static int da9055_gpio_get(struct gpio_chip *gc, unsigned offset)

{

	struct da9055_gpio *gpio = to_da9055_gpio(gc);

	int gpio_direction = 0;

	int ret;



	/* Get GPIO direction */

	ret = da9055_reg_read(gpio->da9055, (offset >> 1) + DA9055_REG_GPIO0_1);

	if (ret < 0)

		return ret;



	gpio_direction = ret & (DA9055_PORT_MASK) << DA9055_PORT_SHIFT(offset);

	gpio_direction >>= DA9055_PORT_SHIFT(offset);

	switch (gpio_direction) {

	case DA9055_INPUT:

		ret = da9055_reg_read(gpio->da9055, DA9055_REG_STATUS_B);

		if (ret < 0)

			return ret;

		break;

	case DA9055_OUTPUT:

		ret = da9055_reg_read(gpio->da9055, DA9055_REG_GPIO_MODE0_2);

		if (ret < 0)

			return ret;

	}



	return ret & (1 << offset);



}



static void da9055_gpio_set(struct gpio_chip *gc, unsigned offset, int value)

{

	struct da9055_gpio *gpio = to_da9055_gpio(gc);



	da9055_reg_update(gpio->da9055,

			DA9055_REG_GPIO_MODE0_2,

			1 << offset,

			value << offset);

}



static int da9055_gpio_direction_input(struct gpio_chip *gc, unsigned offset)

{

	struct da9055_gpio *gpio = to_da9055_gpio(gc);

	unsigned char reg_byte;



	reg_byte = (DA9055_ACT_LOW | DA9055_GPI)

				<< DA9055_PORT_SHIFT(offset);



	return da9055_reg_update(gpio->da9055, (offset >> 1) +

				DA9055_REG_GPIO0_1,

				DA9055_PORT_MASK <<

				DA9055_PORT_SHIFT(offset),

				reg_byte);

}



static int da9055_gpio_direction_output(struct gpio_chip *gc,

					unsigned offset, int value)

{

	struct da9055_gpio *gpio = to_da9055_gpio(gc);

	unsigned char reg_byte;

	int ret;



	reg_byte = (DA9055_VDD_IO | DA9055_PUSH_PULL)

					<< DA9055_PORT_SHIFT(offset);



	ret = da9055_reg_update(gpio->da9055, (offset >> 1) +

				DA9055_REG_GPIO0_1,

				DA9055_PORT_MASK <<

				DA9055_PORT_SHIFT(offset),

				reg_byte);

	if (ret < 0)

		return ret;



	da9055_gpio_set(gc, offset, value);



	return 0;

}



static int da9055_gpio_to_irq(struct gpio_chip *gc, u32 offset)

{

	struct da9055_gpio *gpio = to_da9055_gpio(gc);

	struct da9055 *da9055 = gpio->da9055;



	return regmap_irq_get_virq(da9055->irq_data,

				  DA9055_IRQ_GPI0 + offset);

}



static struct gpio_chip reference_gp __devinitdata = {

	.label = "da9055-gpio",

	.owner = THIS_MODULE,

	.get = da9055_gpio_get,

	.set = da9055_gpio_set,

	.direction_input = da9055_gpio_direction_input,

	.direction_output = da9055_gpio_direction_output,

	.to_irq = da9055_gpio_to_irq,

	.can_sleep = 1,

	.ngpio = 3,

	.base = -1,

};



static int __devinit da9055_gpio_probe(struct platform_device *pdev)

{

	struct da9055_gpio *gpio;

	struct da9055_pdata *pdata;

	int ret;



	gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);

	if (gpio == NULL)

		return -ENOMEM;



	gpio->da9055 = dev_get_drvdata(pdev->dev.parent);

	pdata = gpio->da9055->dev->platform_data;



	gpio->gp = reference_gp;

	if (pdata && pdata->gpio_base)

		gpio->gp.base = pdata->gpio_base;



	ret = gpiochip_add(&gpio->gp);

	if (ret < 0) {

		dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);

		goto err_mem;

	}



	platform_set_drvdata(pdev, gpio);



	return 0;



err_mem:

	return ret;

}



static int __devexit da9055_gpio_remove(struct platform_device *pdev)

{

	struct da9055_gpio *gpio = platform_get_drvdata(pdev);



	return gpiochip_remove(&gpio->gp);

}



static struct platform_driver da9055_gpio_driver = {

	.probe = da9055_gpio_probe,

	.remove = __devexit_p(da9055_gpio_remove),

	.driver = {

		.name	= "da9055-gpio",

		.owner	= THIS_MODULE,

	},

};



static int __init da9055_gpio_init(void)

{

	return platform_driver_register(&da9055_gpio_driver);

}

subsys_initcall(da9055_gpio_init);



static void __exit da9055_gpio_exit(void)

{

	platform_driver_unregister(&da9055_gpio_driver);

}

module_exit(da9055_gpio_exit);



MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");

MODULE_DESCRIPTION("DA9055 GPIO Device Driver");

MODULE_LICENSE("GPL");

MODULE_ALIAS("platform:da9055-gpio");

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