[Intel-gfx] [PATCH 3/7] drm/i915/display: Add macro to compare hw/sw CSC matrix

[Bhanuprakash Modem]

Add macro to compare hw/sw CSC coeff values. First need to
check whether hw/sw csc enable and csc mode matches or not.
If not no need to compare coeff values, if matches then only
compare.

Cc: Swati Sharma <swati2.sharma at intel.com>
Cc: Uma Shankar <uma.shankar at intel.com>
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 31 ++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 7b38b9a38b85..c4b9d4a238b9 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -8925,6 +8925,29 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 	} \
 } while (0)
 
+#define PIPE_CONF_CHECK_CSC(name1, name2, name3) do { \
+	if (current_config->name1 != pipe_config->name1) { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name1), \
+				"(expected %s, found %s, won't compare csc coeffs)", \
+				yesno(current_config->name1), \
+				yesno(pipe_config->name1)); \
+		ret = false;\
+	} else if (current_config->name2 != pipe_config->name2) { \
+		pipe_config_mismatch(fastset, crtc, __stringify(name2), \
+				"(expected %i, found %i, won't compare csc coeffs)", \
+				current_config->name2, \
+				pipe_config->name2); \
+		ret = false;\
+	} else { \
+		if (!intel_csc_equal(current_config, current_config->name3, \
+				pipe_config->name3)) { \
+			pipe_config_mismatch(fastset, crtc, __stringify(name3), \
+					"hw_state doesn't match sw_state"); \
+			ret = false; \
+		} \
+	} \
+} while (0)
+
 #define PIPE_CONF_QUIRK(quirk) \
 	((current_config->quirks | pipe_config->quirks) & (quirk))
 
@@ -9052,6 +9075,13 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 		bp_gamma = intel_color_get_gamma_bit_precision(pipe_config);
 		if (bp_gamma)
 			PIPE_CONF_CHECK_COLOR_LUT(gamma_mode, hw.gamma_lut, bp_gamma);
+
+		if (HAS_GMCH(dev_priv)) {
+			if (IS_CHERRYVIEW(dev_priv))
+				PIPE_CONF_CHECK_CSC(csc_enable, cgm_mode, hw.ctm);
+		} else {
+			PIPE_CONF_CHECK_CSC(csc_enable, csc_mode, hw.ctm);
+		}
 	}
 
 	PIPE_CONF_CHECK_BOOL(double_wide);
@@ -9143,6 +9173,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 #undef PIPE_CONF_CHECK_FLAGS
 #undef PIPE_CONF_CHECK_CLOCK_FUZZY
 #undef PIPE_CONF_CHECK_COLOR_LUT
+#undef PIPE_CONF_CHECK_CSC
 #undef PIPE_CONF_QUIRK
 
 	return ret;
-- 
2.20.1