Commit 513c27f8 authored by Lee Jones's avatar Lee Jones Committed by Linus Walleij
Browse files

drivers/gpio: gpio-nomadik: Apply Device Tree bindings 



This creates Device Tree bindings for the Nomadik GPIO driver.

Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 1baa5743

arch/arm/mach-ux500/board-mop500.c

+12 −0
Original line number Diff line number Diff line
@@ -746,10 +746,22 @@ MACHINE_END 
#ifdef CONFIG_MACH_UX500_DT



struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {

	/* Requires DMA and call-back bindings. */

	OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat),

	OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat),

	OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat),

	/* Requires DMA bindings. */

	OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0",  &ssp0_plat),

	/* Requires clock name bindings. */

	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8012e000, "gpio.0", NULL),

	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8012e080, "gpio.1", NULL),

	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e000, "gpio.2", NULL),

	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e080, "gpio.3", NULL),

	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e100, "gpio.4", NULL),

	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e180, "gpio.5", NULL),

	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e000, "gpio.6", NULL),

	OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e080, "gpio.7", NULL),

	OF_DEV_AUXDATA("st,nomadik-gpio", 0xa03fe000, "gpio.8", NULL),

	{},

};

drivers/gpio/gpio-nomadik.c

+38 −3
Original line number Diff line number Diff line
@@ -1132,6 +1132,7 @@ void nmk_gpio_read_pull(int gpio_bank, u32 *pull_up) 
static int __devinit nmk_gpio_probe(struct platform_device *dev)

{

	struct nmk_gpio_platform_data *pdata = dev->dev.platform_data;

	struct device_node *np = dev->dev.of_node;

	struct nmk_gpio_chip *nmk_chip;

	struct gpio_chip *chip;

	struct resource *res;
@@ -1141,8 +1142,28 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev) 
	int irq;

	int ret;



	if (!pdata)

	if (!pdata && !np) {

		dev_err(&dev->dev, "No platform data or device tree found\n");

		return -ENODEV;

	}



	if (np) {

		pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);

		if (!pdata)

			return -ENOMEM;



		if (of_get_property(np, "supports-sleepmode", NULL))

			pdata->supports_sleepmode = true;



		if (of_property_read_u32(np, "gpio-bank", &dev->id)) {

			dev_err(&dev->dev, "gpio-bank property not found\n");

			ret = -EINVAL;

			goto out_dt;

		}



		pdata->first_gpio = dev->id * NMK_GPIO_PER_CHIP;

		pdata->num_gpio   = NMK_GPIO_PER_CHIP;

	}



	res = platform_get_resource(dev, IORESOURCE_MEM, 0);

	if (!res) {
@@ -1185,6 +1206,7 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev) 
		ret = -ENOMEM;

		goto out_clk;

	}



	/*

	 * The virt address in nmk_chip->addr is in the nomadik register space,

	 * so we can simply convert the resource address, without remapping
@@ -1211,6 +1233,8 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev) 
	nmk_chip->lowemi = readl_relaxed(nmk_chip->addr + NMK_GPIO_LOWEMI);

	clk_disable(nmk_chip->clk);



	chip->of_node = np;



	ret = gpiochip_add(&nmk_chip->chip);

	if (ret)

		goto out_free;
@@ -1218,12 +1242,13 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev) 
	BUG_ON(nmk_chip->bank >= ARRAY_SIZE(nmk_gpio_chips));



	nmk_gpio_chips[nmk_chip->bank] = nmk_chip;



	platform_set_drvdata(dev, nmk_chip);



	nmk_gpio_init_irq(nmk_chip);



	dev_info(&dev->dev, "at address %p\n",

		 nmk_chip->addr);

	dev_info(&dev->dev, "at address %p\n", nmk_chip->addr);



	return 0;



out_free:
@@ -1238,13 +1263,23 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev) 
out:

	dev_err(&dev->dev, "Failure %i for GPIO %i-%i\n", ret,

		  pdata->first_gpio, pdata->first_gpio+31);

out_dt:

	if (np)

		kfree(pdata);



	return ret;

}



static const struct of_device_id nmk_gpio_match[] = {

	{ .compatible = "st,nomadik-gpio", },

	{}

};



static struct platform_driver nmk_gpio_driver = {

	.driver = {

		.owner = THIS_MODULE,

		.name = "gpio",

		.of_match_table = nmk_gpio_match,

	},

	.probe = nmk_gpio_probe,

};