diff options
| author | Lee, Shawn C <[email protected]> | 2017-09-12 11:36:30 +0800 |
|---|---|---|
| committer | Jani Nikula <[email protected]> | 2017-09-12 12:30:50 +0300 |
| commit | c3881128cb672cf484a52fbb36b5daa9044d9168 (patch) | |
| tree | 5a6d124aef3a843bd8c8d30b27958cfb41181ae4 | |
| parent | 3164888a40469c102b5d6d1b756c7646e7eb19e7 (diff) | |
drm/i915/bxt: set min brightness from VBT
Min brightness value from vbt was missing for BXT platform.
This setting have to refer backlight ic spec to restrict
min backlight output. Without this restriction, driver would
allow to configure lower brightness value and violate
backlight ic requirement.
Fixes: 0fb890c01349 ("drm/i915/bxt: BLC implementation")
Cc: Jani Nikula <[email protected]>
Cc: Cooper Chiou <[email protected]>
Cc: Gary C Wang <[email protected]>
Signed-off-by: Shawn Lee <[email protected]>
Signed-off-by: Jani Nikula <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
| -rw-r--r-- | drivers/gpu/drm/i915/intel_panel.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index a17b1de7d7e0..d4dd248ac9a8 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -1699,6 +1699,8 @@ bxt_setup_backlight(struct intel_connector *connector, enum pipe unused) if (!panel->backlight.max) return -ENODEV; + panel->backlight.min = get_backlight_min_vbt(connector); + val = bxt_get_backlight(connector); val = intel_panel_compute_brightness(connector, val); panel->backlight.level = clamp(val, panel->backlight.min, |