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drm/i915: Implement chv cgm csc readout

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Read out the csc matrix on chv, and stash the result into the
correct spot in the crtc state.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329135002.3096-10-ville.syrjala@linux.intel.com
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
This commit is contained in:
Ville Syrjälä 2023-03-29 16:49:59 +03:00
parent 01c2be8e1b
commit b6f4b3a147
1 changed files with 36 additions and 0 deletions
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36
drivers/gpu/drm/i915/display/intel_color.c
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@ -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 = {