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mfd: 88pm860x: Device tree support

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Signed-off-by: Haojian Zhuang <[email protected]>
Signed-off-by: Samuel Ortiz <[email protected]>
This commit is contained in:
Haojian Zhuang 2012-09-21 18:06:52 +08:00 • committed by Samuel Ortiz
commit 2e57d56747
10 changed files with 351 additions and 41 deletions
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33
drivers/leds/leds-88pm860x.c
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@ -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;