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

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Parse the gpio specific device node information locally.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Laxman Dewangan
2012-05-19 02:01:43 +05:30
committed by Samuel Ortiz
parent dcc7dabd8e
commit 6fe02e9f46
1 changed files with 36 additions and 0 deletions
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36
drivers/gpio/gpio-tps65910.c
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@@ -20,6 +20,7 @@
#include <linux/i2c.h> #include <linux/i2c.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/mfd/tps65910.h> #include <linux/mfd/tps65910.h>
#include <linux/of_device.h>
struct tps65910_gpio { struct tps65910_gpio {
struct gpio_chip gpio_chip; struct gpio_chip gpio_chip;
@@ -81,6 +82,37 @@ static int tps65910_gpio_input(struct gpio_chip *gc, unsigned offset)
GPIO_CFG_MASK); 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) static int __devinit tps65910_gpio_probe(struct platform_device *pdev)
{ {
struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent); struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
@@ -122,6 +154,10 @@ static int __devinit tps65910_gpio_probe(struct platform_device *pdev)
else else
tps65910_gpio->gpio_chip.base = -1; 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) if (!pdata)
goto skip_init; goto skip_init;