[PATCH 3/8] drm/i915/display: Add member fixed_rr to denote Fixed refresh rate with VRRTG

[Ankit Nautiyal]

Add fixed_rr member to struct vrr to represent the case where a
fixed refresh rate with VRR timing generator is required.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c       | 4 +++-
 drivers/gpu/drm/i915/display/intel_display_types.h | 2 +-
 drivers/gpu/drm/i915/display/intel_vrr.c           | 3 +++
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index bb582f5c35a7..61c86655a6d6 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -1004,7 +1004,8 @@ static bool vrr_params_changed(const struct intel_crtc_state *old_crtc_state,
 		old_crtc_state->vrr.vmin != new_crtc_state->vrr.vmin ||
 		old_crtc_state->vrr.vmax != new_crtc_state->vrr.vmax ||
 		old_crtc_state->vrr.guardband != new_crtc_state->vrr.guardband ||
-		old_crtc_state->vrr.pipeline_full != new_crtc_state->vrr.pipeline_full;
+		old_crtc_state->vrr.pipeline_full != new_crtc_state->vrr.pipeline_full ||
+		old_crtc_state->vrr.fixed_rr != new_crtc_state->vrr.fixed_rr;
 }
 
 static bool cmrr_params_changed(const struct intel_crtc_state *old_crtc_state,
@@ -5469,6 +5470,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 
 	if (!fastset) {
 		PIPE_CONF_CHECK_BOOL(vrr.enable);
+		PIPE_CONF_CHECK_BOOL(vrr.fixed_rr);
 		PIPE_CONF_CHECK_I(vrr.vmin);
 		PIPE_CONF_CHECK_I(vrr.vmax);
 		PIPE_CONF_CHECK_I(vrr.flipline);
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 8713835e2307..875370219892 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1407,7 +1407,7 @@ struct intel_crtc_state {
 
 	/* Variable Refresh Rate state */
 	struct {
-		bool enable, in_range;
+		bool enable, in_range, fixed_rr;
 		u8 pipeline_full;
 		u16 flipline, vmin, vmax, guardband;
 		u32 vsync_end, vsync_start;
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 5a0da64c7db3..24568dae717a 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -421,6 +421,9 @@ void intel_vrr_get_config(struct intel_crtc_state *crtc_state)
 						     TRANS_VRR_VMAX(dev_priv, cpu_transcoder)) + 1;
 		crtc_state->vrr.vmin = intel_de_read(dev_priv,
 						     TRANS_VRR_VMIN(dev_priv, cpu_transcoder)) + 1;
+		if (crtc_state->vrr.vmax == crtc_state->vrr.flipline &&
+		    crtc_state->vrr.vmin == crtc_state->vrr.flipline)
+			crtc_state->vrr.fixed_rr = true;
 	}
 
 	if (crtc_state->vrr.enable) {
-- 
2.40.1