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gpio: palmas: add dt support

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Add of_device_id table for Palma GPIO to be enable the
driver from DT file.

The driver can be registered from DT file as:
	palmas: tps65913@58 {
		:::::::::::
		palmas_gpio: palmas_gpio {
			compatible = "ti,palmas-gpio";
			gpio-controller;
			#gpio-cells = <2>;
		};
	};

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Laxman Dewangan 2013-07-23 13:06:04 +05:30 • committed by Linus Walleij
parent 5e0dd40046
commit 5763318f56
2 changed files with 38 additions and 1 deletions
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27
Documentation/devicetree/bindings/gpio/gpio-palmas.txt Normal file
View file

@ -0,0 +1,27 @@
Palmas GPIO controller bindings
Required properties:
- compatible:
- "ti,palams-gpio" for palma series of the GPIO controller
- "ti,tps80036-gpio" for Palma series device TPS80036.
- "ti,tps65913-gpio" for palma series device TPS65913.
- "ti,tps65914-gpio" for palma series device TPS65914.
- #gpio-cells : Should be two.
- first cell is the gpio pin number
- second cell is used to specify the gpio polarity:
0 = active high
1 = active low
- gpio-controller : Marks the device node as a GPIO controller.
Note: This gpio node will be sub node of palmas node.
Example:
palmas: tps65913@58 {
:::::::::::
palmas_gpio: palmas_gpio {
compatible = "ti,palmas-gpio";
gpio-controller;
#gpio-cells = <2>;
};
:::::::::::
};

12
drivers/gpio/gpio-palmas.c
View file

@ -134,7 +134,7 @@ static int palmas_gpio_probe(struct platform_device *pdev)
palmas_gpio->gpio_chip.get = palmas_gpio_get; palmas_gpio->gpio_chip.get = palmas_gpio_get;
palmas_gpio->gpio_chip.dev = &pdev->dev; palmas_gpio->gpio_chip.dev = &pdev->dev;
#ifdef CONFIG_OF_GPIO #ifdef CONFIG_OF_GPIO
palmas_gpio->gpio_chip.of_node = palmas->dev->of_node; palmas_gpio->gpio_chip.of_node = pdev->dev.of_node;
#endif #endif
palmas_pdata = dev_get_platdata(palmas->dev); palmas_pdata = dev_get_platdata(palmas->dev);
if (palmas_pdata && palmas_pdata->gpio_base) if (palmas_pdata && palmas_pdata->gpio_base)
@ -159,9 +159,19 @@ static int palmas_gpio_remove(struct platform_device *pdev)
return gpiochip_remove(&palmas_gpio->gpio_chip); return gpiochip_remove(&palmas_gpio->gpio_chip);
} }
static struct of_device_id of_palmas_gpio_match[] = {
{ .compatible = "ti,palmas-gpio"},
{ .compatible = "ti,tps65913-gpio"},
{ .compatible = "ti,tps65914-gpio"},
{ .compatible = "ti,tps80036-gpio"},
{ },
};
MODULE_DEVICE_TABLE(of, of_palmas_gpio_match);
static struct platform_driver palmas_gpio_driver = { static struct platform_driver palmas_gpio_driver = {
.driver.name = "palmas-gpio", .driver.name = "palmas-gpio",
.driver.owner = THIS_MODULE, .driver.owner = THIS_MODULE,
.driver.of_match_table = of_palmas_gpio_match,
.probe = palmas_gpio_probe, .probe = palmas_gpio_probe,
.remove = palmas_gpio_remove, .remove = palmas_gpio_remove,
}; };