Platform LCD devices may need to do some device-specific
initialization before they can be used (regulator or GPIO setup,
for example), but currently the driver does not support any way of
doing this. This patch adds a probe() callback to plat_lcd_data
which platform LCD devices can set to indicate that device-specific
initialization is needed.
Signed-off-by: Andrew Bresticker <abrestic@xxxxxxxxxxxx>
---
drivers/video/backlight/platform_lcd.c | 8 ++++++++
include/video/platform_lcd.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c
index 54d94de..2fb24a1 100644
--- a/drivers/video/backlight/platform_lcd.c
+++ b/drivers/video/backlight/platform_lcd.c
@@ -86,6 +86,14 @@ static int platform_lcd_probe(struct platform_device *pdev)
return -EINVAL;
}
+ if (pdata->probe) {
+ err = pdata->probe(pdata);
+ if (err) {
+ dev_err(dev, "platform probe failed: %d\n", err);
+ return err;
+ }
+ }
+
plcd = devm_kzalloc(&pdev->dev, sizeof(struct platform_lcd),
GFP_KERNEL);
if (!plcd) {
diff --git a/include/video/platform_lcd.h b/include/video/platform_lcd.h
index ad3bdfe..23864b2 100644
--- a/include/video/platform_lcd.h
+++ b/include/video/platform_lcd.h
@@ -15,6 +15,7 @@ struct plat_lcd_data;
struct fb_info;
struct plat_lcd_data {
+ int (*probe)(struct plat_lcd_data *);
void (*set_power)(struct plat_lcd_data *, unsigned int power);
int (*match_fb)(struct plat_lcd_data *, struct fb_info *);
};
--
1.8.1.3
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