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drm/i915: Reset glk degamma index after programming/readout 

Just for some extra consistency let's reset the glk degamma LUT
index back to 0 after we're dong trawling the LUT.

Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200925131656.10022-6-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2020-09-25 16:16:52 +03:00
parent e0122138c2
commit 4073a4ee5c
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/i915/display/intel_color.c
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@ -818,12 +818,14 @@ static void glk_load_degamma_lut(const struct intel_crtc_state *crtc_state)
* as compared to just 16 to achieve this.
*/
intel_de_write(dev_priv, PRE_CSC_GAMC_DATA(pipe),
lut[i].green);
lut[i].green);
}
/* Clamp values > 1.0. */
while (i++ < 35)
intel_de_write(dev_priv, PRE_CSC_GAMC_DATA(pipe), 1 << 16);
intel_de_write(dev_priv, PRE_CSC_GAMC_INDEX(pipe), 0);
}
static void glk_load_degamma_lut_linear(const struct intel_crtc_state *crtc_state)
@ -851,6 +853,8 @@ static void glk_load_degamma_lut_linear(const struct intel_crtc_state *crtc_stat
/* Clamp values > 1.0. */
while (i++ < 35)
intel_de_write(dev_priv, PRE_CSC_GAMC_DATA(pipe), 1 << 16);
intel_de_write(dev_priv, PRE_CSC_GAMC_INDEX(pipe), 0);
}
static void glk_load_luts(const struct intel_crtc_state *crtc_state)