diff options
| author | Haojian Zhuang <haojian.zhuang@gmail.com> | 2012-09-21 18:06:52 +0800 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-10-02 11:43:13 +0200 |
| commit | 2e57d56747e601b3e0ff6697e524025d0504d161 (patch) | |
| tree | 29a7c677878d39f64e90dfbdf7063a11c08d4c15 /drivers/leds/leds-88pm860x.c | |
| parent | 837c8293ba24d08cd7438d82ad9bb8d2fb0f8a5b (diff) | |
| download | linux-rt-2e57d56747e601b3e0ff6697e524025d0504d161.tar.gz | |
mfd: 88pm860x: Device tree support
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/leds/leds-88pm860x.c')
| -rw-r--r-- | drivers/leds/leds-88pm860x.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/drivers/leds/leds-88pm860x.c b/drivers/leds/leds-88pm860x.c index 70232b1756f9..b7e8cc0957fc 100644 --- a/drivers/leds/leds-88pm860x.c +++ b/drivers/leds/leds-88pm860x.c @@ -12,6 +12,7 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/i2c.h> #include <linux/leds.h> @@ -123,6 +124,33 @@ static void pm860x_led_set(struct led_classdev *cdev, schedule_work(&data->work); } +#ifdef CONFIG_OF +static int pm860x_led_dt_init(struct platform_device *pdev, + struct pm860x_led *data) +{ + struct device_node *nproot = pdev->dev.parent->of_node, *np; + int iset = 0; + if (!nproot) + return -ENODEV; + nproot = of_find_node_by_name(nproot, "leds"); + if (!nproot) { + dev_err(&pdev->dev, "failed to find leds node\n"); + return -ENODEV; + } + for_each_child_of_node(nproot, np) { + if (!of_node_cmp(np->name, data->name)) { + of_property_read_u32(np, "marvell,88pm860x-iset", + &iset); + data->iset = PM8606_LED_CURRENT(iset); + break; + } + } + return 0; +} +#else +#define pm860x_led_dt_init(x, y) (-1) +#endif + static int pm860x_led_probe(struct platform_device *pdev) { struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); @@ -179,8 +207,9 @@ static int pm860x_led_probe(struct platform_device *pdev) data->chip = chip; data->i2c = (chip->id == CHIP_PM8606) ? chip->client : chip->companion; data->port = pdev->id; - if (pdata && pdata->iset) - data->iset = pdata->iset; + if (pm860x_led_dt_init(pdev, data)) + if (pdata) + data->iset = pdata->iset; data->current_brightness = 0; data->cdev.name = data->name; |