diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-tps65910.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-tps65910.c b/drivers/gpio/gpio-tps65910.c index af6dc837ffc..c1ad2884f2e 100644 --- a/drivers/gpio/gpio-tps65910.c +++ b/drivers/gpio/gpio-tps65910.c @@ -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; |