diff options
| author | Uma Shankar <uma.shankar@intel.com> | 2021-12-07 12:41:34 +0530 |
|---|---|---|
| committer | Uma Shankar <uma.shankar@intel.com> | 2021-12-07 12:50:31 +0530 |
| commit | 17815f624a90579aeac4b700f8434e9ff6a6d001 (patch) | |
| tree | b07ecfb20e90de4ff3eec47fb722c8c6241f9717 /drivers/gpu/drm | |
| parent | e83c18cffaedb1cd5da935b06d49308f92ea50cb (diff) | |
drm/i915/xelpd: Enable Pipe Degamma
Enable Pipe Degamma for XE_LPD. Extend the legacy implementation
to incorparate the extended lut size for XE_LPD.
v2: Added a helper for degamma lut size (Ville)
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211207071135.3660332-3-uma.shankar@intel.com
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_color.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c index 42fe549ef6fe..de3ded1e327a 100644 --- a/drivers/gpu/drm/i915/display/intel_color.c +++ b/drivers/gpu/drm/i915/display/intel_color.c @@ -808,6 +808,14 @@ static void bdw_load_luts(const struct intel_crtc_state *crtc_state) } } +static int glk_degamma_lut_size(struct drm_i915_private *i915) +{ + if (DISPLAY_VER(i915) >= 13) + return 131; + else + return 35; +} + static void glk_load_degamma_lut(const struct intel_crtc_state *crtc_state) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); @@ -827,8 +835,8 @@ static void glk_load_degamma_lut(const struct intel_crtc_state *crtc_state) for (i = 0; i < lut_size; i++) { /* - * First 33 entries represent range from 0 to 1.0 - * 34th and 35th entry will represent extended range + * First lut_size entries represent range from 0 to 1.0 + * 3 additional lut entries will represent extended range * inputs 3.0 and 7.0 respectively, currently clamped * at 1.0. Since the precision is 16bit, the user * value can be directly filled to register. @@ -844,7 +852,7 @@ static void glk_load_degamma_lut(const struct intel_crtc_state *crtc_state) } /* Clamp values > 1.0. */ - while (i++ < 35) + while (i++ < glk_degamma_lut_size(dev_priv)) intel_de_write_fw(dev_priv, PRE_CSC_GAMC_DATA(pipe), 1 << 16); intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe), 0); |