Commit b6f4b3a1 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Implement chv cgm csc readout 



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

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329135002.3096-10-ville.syrjala@linux.intel.com


Reviewed-by: default avatarAnkit Nautiyal <ankit.k.nautiyal@intel.com>
parent 01c2be8e

drivers/gpu/drm/i915/display/intel_color.c

+36 −0
Original line number Original line Diff line number Diff line
@@ -611,6 +611,41 @@ static void chv_load_cgm_csc(struct intel_crtc *crtc, 
			  csc->coeff[8]);

			  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)

static void chv_assign_csc(struct intel_crtc_state *crtc_state)

{

{

	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);

	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,

	.load_luts = chv_load_luts,

	.read_luts = chv_read_luts,

	.read_luts = chv_read_luts,

	.lut_equal = chv_lut_equal,

	.lut_equal = chv_lut_equal,

	.read_csc = chv_read_csc,

};

};





static const struct intel_color_funcs i965_color_funcs = {

static const struct intel_color_funcs i965_color_funcs = {