[PATCH v11 6/8] drm/i915/display: Add state checker for Adaptive Sync SDP

[Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>]

Enable infoframe and add state checker for Adaptive Sync
SDP enablement.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 46 ++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_dp.c      |  2 +
 2 files changed, 48 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 00ac65a14029..be0a5fae4e58 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4781,6 +4781,17 @@ intel_compare_dp_vsc_sdp(const struct drm_dp_vsc_sdp *a,
 		a->content_type == b->content_type;
 }
 
+static bool
+intel_compare_dp_as_sdp(const struct drm_dp_as_sdp *a,
+			const struct drm_dp_as_sdp *b)
+{
+	return a->vtotal == b->vtotal &&
+		a->target_rr == b->target_rr &&
+		a->duration_incr_ms == b->duration_incr_ms &&
+		a->duration_decr_ms == b->duration_decr_ms &&
+		a->mode == b->mode;
+}
+
 static bool
 intel_compare_buffer(const u8 *a, const u8 *b, size_t len)
 {
@@ -4836,6 +4847,30 @@ pipe_config_dp_vsc_sdp_mismatch(struct drm_i915_private *i915,
 	drm_dp_vsc_sdp_log(&p, b);
 }
 
+static void
+pipe_config_dp_as_sdp_mismatch(struct drm_i915_private *i915,
+			       bool fastset, const char *name,
+			       const struct drm_dp_as_sdp *a,
+			       const struct drm_dp_as_sdp *b)
+{
+	struct drm_printer p;
+
+	if (fastset) {
+		p = drm_dbg_printer(&i915->drm, DRM_UT_KMS, NULL);
+
+		drm_printf(&p, "fastset requirement not met in %s dp sdp\n", name);
+	} else {
+		p = drm_err_printer(&i915->drm, NULL);
+
+		drm_printf(&p, "mismatch in %s dp sdp\n", name);
+	}
+
+	drm_printf(&p, "expected:\n");
+	drm_dp_as_sdp_log(&p, a);
+	drm_printf(&p, "found:\n");
+	drm_dp_as_sdp_log(&p, b);
+}
+
 /* Returns the length up to and including the last differing byte */
 static size_t
 memcmp_diff_len(const u8 *a, const u8 *b, size_t len)
@@ -5089,6 +5124,16 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 	} \
 } while (0)
 
+#define PIPE_CONF_CHECK_DP_AS_SDP(name) do { \
+	if (!intel_compare_dp_as_sdp(&current_config->infoframes.name, \
+				      &pipe_config->infoframes.name)) { \
+		pipe_config_dp_as_sdp_mismatch(dev_priv, fastset, __stringify(name), \
+						&current_config->infoframes.name, \
+						&pipe_config->infoframes.name); \
+		ret = false; \
+	} \
+} while (0)
+
 #define PIPE_CONF_CHECK_BUFFER(name, len) do { \
 	BUILD_BUG_ON(sizeof(current_config->name) != (len)); \
 	BUILD_BUG_ON(sizeof(pipe_config->name) != (len)); \
@@ -5270,6 +5315,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 	PIPE_CONF_CHECK_INFOFRAME(hdmi);
 	PIPE_CONF_CHECK_INFOFRAME(drm);
 	PIPE_CONF_CHECK_DP_VSC_SDP(vsc);
+	PIPE_CONF_CHECK_DP_AS_SDP(as_sdp);
 
 	PIPE_CONF_CHECK_X(sync_mode_slaves_mask);
 	PIPE_CONF_CHECK_I(master_transcoder);
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 1cd3cc0d0c0b..2ec1f923a5a0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2648,6 +2648,8 @@ static void intel_dp_compute_as_sdp(struct intel_dp *intel_dp,
 	as_sdp->target_rr = 0;
 	as_sdp->duration_incr_ms = 0;
 	as_sdp->duration_incr_ms = 0;
+
+	crtc_state->infoframes.enable |= intel_hdmi_infoframe_enable(DP_SDP_ADAPTIVE_SYNC);
 }
 
 static void intel_dp_compute_vsc_sdp(struct intel_dp *intel_dp,
-- 
2.25.1