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backlight: Allow properties to be passed at registration

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Values such as max_brightness should be set before backlights are
registered, but the current API doesn't allow that. Add a parameter to
backlight_device_register and update drivers to ensure that they
set this correctly.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Matthew Garrett
2010-02-17 16:39:44 -05:00
committed by Richard Purdie
parent 57e148b6a9
commit a19a6ee6ca
49 changed files with 271 additions and 151 deletions
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8
drivers/video/atmel_lcdfb.c
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@@ -117,6 +117,7 @@ static struct backlight_ops atmel_lcdc_bl_ops = {
static void init_backlight(struct atmel_lcdfb_info *sinfo)
{
struct backlight_properties props;
struct backlight_device *bl;
sinfo->bl_power = FB_BLANK_UNBLANK;
@@ -124,8 +125,10 @@ static void init_backlight(struct atmel_lcdfb_info *sinfo)
if (sinfo->backlight)
return;
bl = backlight_device_register("backlight", &sinfo->pdev->dev,
sinfo, &atmel_lcdc_bl_ops);
memset(&props, 0, sizeof(struct backlight_properties));
props.max_brightness = 0xff;
bl = backlight_device_register("backlight", &sinfo->pdev->dev, sinfo,
&atmel_lcdc_bl_ops, &props);
if (IS_ERR(bl)) {
dev_err(&sinfo->pdev->dev, "error %ld on backlight register\n",
PTR_ERR(bl));
@@ -135,7 +138,6 @@ static void init_backlight(struct atmel_lcdfb_info *sinfo)
bl->props.power = FB_BLANK_UNBLANK;
bl->props.fb_blank = FB_BLANK_UNBLANK;
bl->props.max_brightness = 0xff;
bl->props.brightness = atmel_bl_get_brightness(bl);
}