From fbeb4f36221358f01c9608b959b8d542e7becae6 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Wed, 27 Mar 2019 17:50:41 +0200 Subject: [PATCH] drm/i915: Extract glk_color_check() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Unlike the earlier platforms GLK has dedicated degamma and gamma LUTs. And quite curiously the degamma LUT is actually controlled via the PLANE_COLOR_CTL CSC enable bit. Hence we must compute gamma_enable and csc_enable differently to pre-GLK platforms. Signed-off-by: Ville Syrjälä Reviewed-by: Matt Roper Link: https://patchwork.freedesktop.org/patch/msgid/20190327155045.28446-7-ville.syrjala@linux.intel.com --- drivers/gpu/drm/i915/intel_color.c | 40 ++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c index cb40c89da038..90ebcf7bef82 100644 --- a/drivers/gpu/drm/i915/intel_color.c +++ b/drivers/gpu/drm/i915/intel_color.c @@ -883,6 +883,44 @@ static int chv_color_check(struct intel_crtc_state *crtc_state) return 0; } +static u32 glk_gamma_mode(const struct intel_crtc_state *crtc_state) +{ + if (!crtc_state->gamma_enable || + crtc_state_is_legacy_gamma(crtc_state)) + return GAMMA_MODE_MODE_8BIT; + else + return GAMMA_MODE_MODE_10BIT; +} + +static int glk_color_check(struct intel_crtc_state *crtc_state) +{ + int ret; + + ret = check_luts(crtc_state); + if (ret) + return ret; + + crtc_state->gamma_enable = + crtc_state->base.gamma_lut && + !crtc_state->c8_planes; + + /* On GLK+ degamma LUT is controlled by csc_enable */ + crtc_state->csc_enable = + crtc_state->base.degamma_lut || + crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB || + crtc_state->base.ctm || crtc_state->limited_color_range; + + crtc_state->gamma_mode = glk_gamma_mode(crtc_state); + + crtc_state->csc_mode = 0; + + ret = intel_color_add_affected_planes(crtc_state); + if (ret) + return ret; + + return 0; +} + static u32 icl_gamma_mode(const struct intel_crtc_state *crtc_state) { u32 gamma_mode = 0; @@ -993,6 +1031,8 @@ void intel_color_init(struct intel_crtc *crtc) } else { if (INTEL_GEN(dev_priv) >= 11) dev_priv->display.color_check = icl_color_check; + else if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) + dev_priv->display.color_check = glk_color_check; else dev_priv->display.color_check = _intel_color_check; -- 2.39.5