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| author | Andrew Bresticker <abrestic@chromium.org> | 2013-04-29 16:17:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-29 18:28:18 -0700 |
| commit | 46e1915eef9c0e935a09808a30e167abb857b4ec (patch) | |
| tree | 5ebca88c181f8cda4ea901d56c83814eba3876ec | |
| parent | 40d88fc60d426b0e1306adf6ec0be9da164e5d2a (diff) | |
| download | op-kernel-dev-46e1915eef9c0e935a09808a30e167abb857b4ec.zip op-kernel-dev-46e1915eef9c0e935a09808a30e167abb857b4ec.tar.gz | |
drivers/video/backlight/platform_lcd.c: introduce probe callback
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@chromium.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/video/backlight/platform_lcd.c | 6 | ||||
| -rw-r--r-- | include/video/platform_lcd.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c index 54d94de..0568367 100644 --- a/drivers/video/backlight/platform_lcd.c +++ b/drivers/video/backlight/platform_lcd.c @@ -86,6 +86,12 @@ static int platform_lcd_probe(struct platform_device *pdev) return -EINVAL; } + if (pdata->probe) { + err = pdata->probe(pdata); + if (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 *); }; |
