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video: s3c-fb: Don't keep device runtime active when open 

Allow the controller to be runtime suspended when the screen is blanked
by not taking a runtime reference while the device is open. This allows
greater system wide power savings when used with a standard application
layer and ensures that the screen does not blank unless requested.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This commit is contained in:
Mark Brown 2011-12-27 14:16:12 +00:00 committed by Florian Tobias Schandinat
parent 5751b23efb
commit e2f55b5455
1 changed files with 0 additions and 22 deletions
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22
drivers/video/s3c-fb.c
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@ -1070,30 +1070,8 @@ static int s3c_fb_ioctl(struct fb_info *info, unsigned int cmd,
return ret;
}
static int s3c_fb_open(struct fb_info *info, int user)
{
struct s3c_fb_win *win = info->par;
struct s3c_fb *sfb = win->parent;
pm_runtime_get_sync(sfb->dev);
return 0;
}
static int s3c_fb_release(struct fb_info *info, int user)
{
struct s3c_fb_win *win = info->par;
struct s3c_fb *sfb = win->parent;
pm_runtime_put_sync(sfb->dev);
return 0;
}
static struct fb_ops s3c_fb_ops = {
.owner = THIS_MODULE,
.fb_open = s3c_fb_open,
.fb_release = s3c_fb_release,
.fb_check_var = s3c_fb_check_var,
.fb_set_par = s3c_fb_set_par,
.fb_blank = s3c_fb_blank,