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Commit 6fe02e9f authored by Laxman Dewangan's avatar Laxman Dewangan Committed by Samuel Ortiz
Browse files

gpio: tps65910: dt: process gpio specific device node info 



Parse the gpio specific device node information locally.

Signed-off-by: default avatarLaxman Dewangan <ldewangan@nvidia.com>
Acked-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent dcc7dabd

drivers/gpio/gpio-tps65910.c

+36 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <linux/i2c.h>

#include <linux/platform_device.h>

#include <linux/mfd/tps65910.h>

#include <linux/of_device.h>



struct tps65910_gpio {

	struct gpio_chip gpio_chip;
@@ -81,6 +82,37 @@ static int tps65910_gpio_input(struct gpio_chip *gc, unsigned offset) 
						GPIO_CFG_MASK);

}



#ifdef CONFIG_OF

static struct tps65910_board *tps65910_parse_dt_for_gpio(struct device *dev,

		struct tps65910 *tps65910, int chip_ngpio)

{

	struct tps65910_board *tps65910_board = tps65910->of_plat_data;

	unsigned int prop_array[TPS6591X_MAX_NUM_GPIO];

	int ngpio = min(chip_ngpio, TPS6591X_MAX_NUM_GPIO);

	int ret;

	int idx;



	tps65910_board->gpio_base = -1;

	ret = of_property_read_u32_array(tps65910->dev->of_node,

			"ti,en-gpio-sleep", prop_array, ngpio);

	if (ret < 0) {

		dev_dbg(dev, "ti,en-gpio-sleep not specified\n");

		return tps65910_board;

	}



	for (idx = 0; idx < ngpio; idx++)

		tps65910_board->en_gpio_sleep[idx] = (prop_array[idx] != 0);



	return tps65910_board;

}

#else

static struct tps65910_board *tps65910_parse_dt_for_gpio(struct device *dev,

		struct tps65910 *tps65910, int chip_ngpio)

{

	return NULL;

}

#endif



static int __devinit tps65910_gpio_probe(struct platform_device *pdev)

{

	struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
@@ -122,6 +154,10 @@ static int __devinit tps65910_gpio_probe(struct platform_device *pdev) 
	else

		tps65910_gpio->gpio_chip.base = -1;



	if (!pdata && tps65910->dev->of_node)

		pdata = tps65910_parse_dt_for_gpio(&pdev->dev, tps65910,

			tps65910_gpio->gpio_chip.ngpio);



	if (!pdata)

		goto skip_init;