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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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39
drivers/video/backlight/88pm860x_bl.c
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@ -11,6 +11,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/fb.h>
@ -159,6 +160,36 @@ static const struct backlight_ops pm860x_backlight_ops = {
.get_brightness = pm860x_backlight_get_brightness,
};
#ifdef CONFIG_OF
static int pm860x_backlight_dt_init(struct platform_device *pdev,
struct pm860x_backlight_data *data,
char *name)
{
struct device_node *nproot = pdev->dev.parent->of_node, *np;
int iset = 0;
if (!nproot)
return -ENODEV;
nproot = of_find_node_by_name(nproot, "backlights");
if (!nproot) {
dev_err(&pdev->dev, "failed to find backlights node\n");
return -ENODEV;
}
for_each_child_of_node(nproot, np) {
if (!of_node_cmp(np->name, name)) {
of_property_read_u32(np, "marvell,88pm860x-iset",
&iset);
data->iset = PM8606_WLED_CURRENT(iset);
of_property_read_u32(np, "marvell,88pm860x-pwm",
&data->pwm);
break;
}
}
return 0;
}
#else
#define pm860x_backlight_dt_init(x, y, z) (-1)
#endif
static int pm860x_backlight_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
@ -203,9 +234,11 @@ static int pm860x_backlight_probe(struct platform_device *pdev)
data->i2c = (chip->id == CHIP_PM8606) ? chip->client \
: chip->companion;
data->current_brightness = MAX_BRIGHTNESS;
if (pdata) {
data->pwm = pdata->pwm;
data->iset = pdata->iset;
if (pm860x_backlight_dt_init(pdev, data, name)) {
if (pdata) {
data->pwm = pdata->pwm;
data->iset = pdata->iset;
}
}
memset(&props, 0, sizeof(struct backlight_properties));