openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915: Fix legacy gamma mode for ICL 

We must remember to actually enable the post CSC gamma if
we expect the legacy LUT to work. Seems to fix NV12 crc
tests on the SDR planes. Curiously we apparently managed to
get 100% match for the HDR planes even without chopping
off the low bits.

Cc: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190315195445.26527-1-ville.syrjala@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
This commit is contained in:
Ville Syrjälä 2019-03-15 21:54:44 +02:00
parent 8cbd0c70da
commit 5a0404408d
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/i915/intel_color.c
View File

@ -832,6 +832,9 @@ int intel_color_check(struct intel_crtc_state *crtc_state)
if (!crtc_state->gamma_enable ||
crtc_state_is_legacy_gamma(crtc_state)) {
crtc_state->gamma_mode = GAMMA_MODE_MODE_8BIT;
if (INTEL_GEN(dev_priv) >= 11 &&
crtc_state->gamma_enable)
crtc_state->gamma_mode |= POST_CSC_GAMMA_ENABLE;
return 0;
}