Commit f74ce8fb authored by Florian Vaussard's avatar Florian Vaussard Committed by Benoit Cousson
Browse files

gpio/twl4030: get platform data from device tree 



Adds a number of missing device tree properties for
twl4030/gpio, and update bindings:
- "ti,use-leds"  -> .use_leds
- "ti,debounce"  -> .debounce
- "ti,mmc-cd"    -> .mmc_cd
- "ti,pullups"   -> .pullups
- "ti,pulldowns" -> .pulldowns

Signed-off-by: default avatarFlorian Vaussard <florian.vaussard@epfl.ch>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Acked-by: default avatarVaibhav Hiremath <hvaibhav@ti.com>
[b-cousson@ti.com: Fix some checkpatch CHECK issues]
Signed-off-by: default avatarBenoit Cousson <b-cousson@ti.com>
parent 5635121e

Documentation/devicetree/bindings/gpio/gpio-twl4030.txt

+6 −0
Original line number Diff line number Diff line
@@ -11,6 +11,11 @@ Required properties: 
- interrupt-controller: Mark the device node as an interrupt controller

  The first cell is the GPIO number.

  The second cell is not used.

- ti,use-leds : Enables LEDA and LEDB outputs if set

- ti,debounce : if n-th bit is set, debounces GPIO-n

- ti,mmc-cd : if n-th bit is set, GPIO-n controls VMMC(n+1)

- ti,pullups : if n-th bit is set, set a pullup on GPIO-n

- ti,pulldowns : if n-th bit is set, set a pulldown on GPIO-n



Example:
@@ -20,4 +25,5 @@ twl_gpio: gpio { 
    gpio-controller;

    #interrupt-cells = <2>;

    interrupt-controller;

    ti,use-leds;

};

drivers/gpio/gpio-twl4030.c

+55 −27
Original line number Diff line number Diff line
@@ -395,6 +395,31 @@ static int __devinit gpio_twl4030_debounce(u32 debounce, u8 mmc_cd) 


static int gpio_twl4030_remove(struct platform_device *pdev);



static struct twl4030_gpio_platform_data *of_gpio_twl4030(struct device *dev)

{

	struct twl4030_gpio_platform_data *omap_twl_info;



	omap_twl_info = devm_kzalloc(dev, sizeof(*omap_twl_info), GFP_KERNEL);

	if (!omap_twl_info)

		return NULL;



	omap_twl_info->gpio_base = -1;



	omap_twl_info->use_leds = of_property_read_bool(dev->of_node,

			"ti,use-leds");



	of_property_read_u32(dev->of_node, "ti,debounce",

			     &omap_twl_info->debounce);

	of_property_read_u32(dev->of_node, "ti,mmc-cd",

			     (u32 *)&omap_twl_info->mmc_cd);

	of_property_read_u32(dev->of_node, "ti,pullups",

			     &omap_twl_info->pullups);

	of_property_read_u32(dev->of_node, "ti,pulldowns",

			     &omap_twl_info->pulldowns);



	return omap_twl_info;

}



static int __devinit gpio_twl4030_probe(struct platform_device *pdev)

{

	struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data;
@@ -423,11 +448,17 @@ static int __devinit gpio_twl4030_probe(struct platform_device *pdev) 
	twl4030_gpio_irq_base = irq_base;



no_irqs:

	twl_gpiochip.base = -1;

	twl_gpiochip.ngpio = TWL4030_GPIO_MAX;

	twl_gpiochip.dev = &pdev->dev;



	if (pdata) {

	if (node)

		pdata = of_gpio_twl4030(&pdev->dev);



	if (pdata == NULL) {

		dev_err(&pdev->dev, "Platform data is missing\n");

		return -ENXIO;

	}



	twl_gpiochip.base = pdata->gpio_base;



	/*
@@ -439,14 +470,12 @@ no_irqs: 
	ret = gpio_twl4030_pulls(pdata->pullups, pdata->pulldowns);

	if (ret)

		dev_dbg(&pdev->dev, "pullups %.05x %.05x --> %d\n",

					pdata->pullups, pdata->pulldowns,

					ret);

			pdata->pullups, pdata->pulldowns, ret);



	ret = gpio_twl4030_debounce(pdata->debounce, pdata->mmc_cd);

	if (ret)

		dev_dbg(&pdev->dev, "debounce %.03x %.01x --> %d\n",

					pdata->debounce, pdata->mmc_cd,

					ret);

			pdata->debounce, pdata->mmc_cd, ret);



	/*

	 * NOTE: we assume VIBRA_CTL.VIBRA_EN, in MODULE_AUDIO_VOICE,
@@ -454,7 +483,6 @@ no_irqs: 
	 */

	if (pdata->use_leds)

		twl_gpiochip.ngpio += 2;

	}



	ret = gpiochip_add(&twl_gpiochip);

	if (ret < 0) {

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