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compositor-drm: drm_set_backlight heads

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Fix this function to support more than one head per output.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Acked-by: Derek Foreman <derekf@osg.samsung.com>
This commit is contained in:
Pekka Paalanen
2017-09-12 16:14:31 +03:00
parent 2f66130594
commit ecc8cce45d
1 changed files with 11 additions and 8 deletions
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libweston/compositor-drm.c
+11 -8
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@@ -3806,21 +3806,24 @@ drm_get_backlight(struct drm_head *head)
static void
drm_set_backlight(struct weston_output *output_base, uint32_t value)
{
struct drm_head *head = to_drm_head(weston_output_get_first_head(output_base));
struct drm_output *output = to_drm_output(output_base);
struct drm_head *head;
long max_brightness, new_brightness;
if (!head->backlight)
return;
if (value > 255)
return;
max_brightness = backlight_get_max_brightness(head->backlight);
wl_list_for_each(head, &output->base.head_list, base.output_link) {
if (!head->backlight)
return;
/* get denormalized value */
new_brightness = (value * max_brightness) / 255;
max_brightness = backlight_get_max_brightness(head->backlight);
backlight_set_brightness(head->backlight, new_brightness);
/* get denormalized value */
new_brightness = (value * max_brightness) / 255;
backlight_set_brightness(head->backlight, new_brightness);
}
}
/**