diff options
| author | Lee, Shawn C <[email protected]> | 2017-09-13 13:19:20 +0800 |
|---|---|---|
| committer | Rodrigo Vivi <[email protected]> | 2017-09-18 15:22:33 -0700 |
| commit | 8c7a758873577f0d1bb3f879584338f73e6c6bc3 (patch) | |
| tree | 15072d84a507f453a1a2130d8afe629e253510cc | |
| parent | abeae421b03d800d33894df7fbca6d00c70c358e (diff) | |
drm/i915/cnp: set min brightness from VBT
Min brightness value from vbt was missing for CNP 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: 4c9f7086ac6d ("drm/i915/cnp: Backlight support for CNP.")
Cc: Jani Nikula <[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]
(cherry picked from commit f44e354f857f207cd361269c5e38e1f96e0b616c)
Signed-off-by: Rodrigo Vivi <[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 d4dd248ac9a8..3b1c5d783ee7 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -1737,6 +1737,8 @@ cnp_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, |