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drm/i915/display: Add gamma precision function for CHV 

intel_color_get_gamma_bit_precision() is extended for
cherryview by adding chv_gamma_precision(), i965 will use existing
i9xx_gamma_precision() func only.

Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1568030503-26747-2-git-send-email-swati2.sharma@intel.com
This commit is contained in:
Swati Sharma 2019-09-09 17:31:41 +05:30 committed by Jani Nikula
parent fa9a09f150
commit b0a7c75414
1 changed files with 19 additions and 6 deletions
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25
drivers/gpu/drm/i915/display/intel_color.c
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@ -1400,6 +1400,14 @@ static int ilk_gamma_precision(const struct intel_crtc_state *crtc_state)
}
}
static int chv_gamma_precision(const struct intel_crtc_state *crtc_state)
{
if (crtc_state->cgm_mode & CGM_PIPE_MODE_GAMMA)
return 10;
else
return i9xx_gamma_precision(crtc_state);
}
static int glk_gamma_precision(const struct intel_crtc_state *crtc_state)
{
switch (crtc_state->gamma_mode) {
@ -1421,12 +1429,17 @@ int intel_color_get_gamma_bit_precision(const struct intel_crtc_state *crtc_stat
if (!crtc_state->gamma_enable)
return 0;
if (HAS_GMCH(dev_priv) && !IS_CHERRYVIEW(dev_priv))
return i9xx_gamma_precision(crtc_state);
else if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
return glk_gamma_precision(crtc_state);
else if (IS_IRONLAKE(dev_priv))
return ilk_gamma_precision(crtc_state);
if (HAS_GMCH(dev_priv)) {
if (IS_CHERRYVIEW(dev_priv))
return chv_gamma_precision(crtc_state);
else
return i9xx_gamma_precision(crtc_state);
} else {
if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
return glk_gamma_precision(crtc_state);
else if (IS_IRONLAKE(dev_priv))
return ilk_gamma_precision(crtc_state);
}
return 0;
}