From b6f4b3a1474d8bed9fad2b4d681368710375bbe9 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Wed, 29 Mar 2023 16:49:59 +0300 Subject: [PATCH] drm/i915: Implement chv cgm csc readout MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Read out the csc matrix on chv, and stash the result into the correct spot in the crtc state. Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20230329135002.3096-10-ville.syrjala@linux.intel.com Reviewed-by: Ankit Nautiyal --- drivers/gpu/drm/i915/display/intel_color.c | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c index efa8a6decd9d3..07f1afe1d4067 100644 --- a/drivers/gpu/drm/i915/display/intel_color.c +++ b/drivers/gpu/drm/i915/display/intel_color.c @@ -611,6 +611,41 @@ static void chv_load_cgm_csc(struct intel_crtc *crtc, csc->coeff[8]); } +static void chv_read_cgm_csc(struct intel_crtc *crtc, + struct intel_csc_matrix *csc) +{ + struct drm_i915_private *i915 = to_i915(crtc->base.dev); + enum pipe pipe = crtc->pipe; + u32 tmp; + + tmp = intel_de_read_fw(i915, CGM_PIPE_CSC_COEFF01(pipe)); + csc->coeff[0] = tmp & 0xffff; + csc->coeff[1] = tmp >> 16; + + tmp = intel_de_read_fw(i915, CGM_PIPE_CSC_COEFF23(pipe)); + csc->coeff[2] = tmp & 0xffff; + csc->coeff[3] = tmp >> 16; + + tmp = intel_de_read_fw(i915, CGM_PIPE_CSC_COEFF45(pipe)); + csc->coeff[4] = tmp & 0xffff; + csc->coeff[5] = tmp >> 16; + + tmp = intel_de_read_fw(i915, CGM_PIPE_CSC_COEFF67(pipe)); + csc->coeff[6] = tmp & 0xffff; + csc->coeff[7] = tmp >> 16; + + tmp = intel_de_read_fw(i915, CGM_PIPE_CSC_COEFF8(pipe)); + csc->coeff[8] = tmp & 0xffff; +} + +static void chv_read_csc(struct intel_crtc_state *crtc_state) +{ + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + + if (crtc_state->cgm_mode & CGM_PIPE_MODE_CSC) + chv_read_cgm_csc(crtc, &crtc_state->csc); +} + static void chv_assign_csc(struct intel_crtc_state *crtc_state) { struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); @@ -3328,6 +3363,7 @@ static const struct intel_color_funcs chv_color_funcs = { .load_luts = chv_load_luts, .read_luts = chv_read_luts, .lut_equal = chv_lut_equal, + .read_csc = chv_read_csc, }; static const struct intel_color_funcs i965_color_funcs = { -- 2.30.2