From: Ville Syrjälä <[email protected]> ilk/snb vs. ivb+ hardware is mostly identical except for the addition of the split gamma mode on ivb. Thus we can share the csc_enable and gamma_enable calculation for both variants. Pull that stuff into a few helpers.
Note that this also fills in the missing ctm/degamma stuff into ilk_color_check() pretty much, so for good measure let's also add a few extra checks relating to that, although we still don't expose ctm/degamma to userspace. But now it'll be trivial to do so if we wish. Signed-off-by: Ville Syrjälä <[email protected]> --- drivers/gpu/drm/i915/display/intel_color.c | 49 ++++++++++++++-------- 1 file changed, 32 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c index 926784f266f2..33871bfacee7 100644 --- a/drivers/gpu/drm/i915/display/intel_color.c +++ b/drivers/gpu/drm/i915/display/intel_color.c @@ -1442,6 +1442,20 @@ static int chv_color_check(struct intel_crtc_state *crtc_state) return 0; } +static bool ilk_gamma_enable(const struct intel_crtc_state *crtc_state) +{ + return (crtc_state->hw.gamma_lut || + crtc_state->hw.degamma_lut) && + !crtc_state->c8_planes; +} + +static bool ilk_csc_enable(const struct intel_crtc_state *crtc_state) +{ + return crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB || + ilk_csc_limited_range(crtc_state) || + crtc_state->hw.ctm; +} + static u32 ilk_gamma_mode(const struct intel_crtc_state *crtc_state) { if (!crtc_state->gamma_enable || @@ -1487,22 +1501,29 @@ static void ilk_assign_luts(struct intel_crtc_state *crtc_state) static int ilk_color_check(struct intel_crtc_state *crtc_state) { + struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); int ret; ret = check_luts(crtc_state); if (ret) return ret; - crtc_state->gamma_enable = - crtc_state->hw.gamma_lut && - !crtc_state->c8_planes; + if (crtc_state->hw.degamma_lut && crtc_state->hw.gamma_lut) { + drm_dbg_kms(&i915->drm, + "Degamma and gamma together are not possible\n"); + return -EINVAL; + } - /* - * We don't expose the ctm on ilk/snb currently, also RGB - * limited range output is handled by the hw automagically. - */ - crtc_state->csc_enable = - crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB; + if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB && + crtc_state->hw.ctm) { + drm_dbg_kms(&i915->drm, + "YCbCr and CTM together are not possible\n"); + return -EINVAL; + } + + crtc_state->gamma_enable = ilk_gamma_enable(crtc_state); + + crtc_state->csc_enable = ilk_csc_enable(crtc_state); crtc_state->gamma_mode = ilk_gamma_mode(crtc_state); @@ -1546,7 +1567,6 @@ static u32 ivb_csc_mode(const struct intel_crtc_state *crtc_state) static int ivb_color_check(struct intel_crtc_state *crtc_state) { struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); - bool limited_color_range = ilk_csc_limited_range(crtc_state); int ret; ret = check_luts(crtc_state); @@ -1567,14 +1587,9 @@ static int ivb_color_check(struct intel_crtc_state *crtc_state) return -EINVAL; } - crtc_state->gamma_enable = - (crtc_state->hw.gamma_lut || - crtc_state->hw.degamma_lut) && - !crtc_state->c8_planes; + crtc_state->gamma_enable = ilk_gamma_enable(crtc_state); - crtc_state->csc_enable = - crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB || - crtc_state->hw.ctm || limited_color_range; + crtc_state->csc_enable = ilk_csc_enable(crtc_state); crtc_state->gamma_mode = ivb_gamma_mode(crtc_state); -- 2.37.4
