From: Pekka Paalanen <pekka.paala...@collabora.co.uk>
Fix this function to support more than one head per output.
Signed-off-by: Pekka Paalanen <pekka.paala...@collabora.co.uk>
---
libweston/compositor-drm.c | 19 +++++++++++--------
1 file changed, 11 insertions(+), 8 deletions(-)
diff --git a/libweston/compositor-drm.c b/libweston/compositor-drm.c
index 965efafd..b77c1879 100644
--- a/libweston/compositor-drm.c
+++ b/libweston/compositor-drm.c
@@ -3824,21 +3824,24 @@ 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);
+ }
}
/**
--
2.13.6
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