drm/amd/display: Enable Replay for static screen use cases

- Setup replay config on device init.
- Enable replay if feature is enabled (prioritize replay over PSR, since
it can be enabled in more usecases)
- Add debug masks to enable replay on supported ASICs

Signed-off-by: Bhawanpreet Lakha <[email protected]>
Reviewed-by: Harry Wentland <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -65,6 +65,7 @@
 #include "amdgpu_dm_debugfs.h"
 #endif
 #include "amdgpu_dm_psr.h"
+#include "amdgpu_dm_replay.h"
 
 #include "ivsrcid/ivsrcid_vislands30.h"
 
@@ -4265,6 +4266,7 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
 	enum dc_connection_type new_connection_type = dc_connection_none;
 	const struct dc_plane_cap *plane;
 	bool psr_feature_enabled = false;
+	bool replay_feature_enabled = false;
 	int max_overlay = dm->dc->caps.max_slave_planes;
 
 	dm->display_indexes_num = dm->dc->caps.max_streams;
@@ -4374,6 +4376,20 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
 		}
 	}
 
+	if (!(amdgpu_dc_debug_mask & DC_DISABLE_REPLAY)) {
+		switch (adev->ip_versions[DCE_HWIP][0]) {
+		case IP_VERSION(3, 1, 4):
+		case IP_VERSION(3, 1, 5):
+		case IP_VERSION(3, 1, 6):
+		case IP_VERSION(3, 2, 0):
+		case IP_VERSION(3, 2, 1):
+			replay_feature_enabled = true;
+			break;
+		default:
+			replay_feature_enabled = amdgpu_dc_feature_mask & DC_REPLAY_MASK;
+			break;
+		}
+	}
 	/* loops over all connectors on the board */
 	for (i = 0; i < link_cnt; i++) {
 		struct dc_link *link = NULL;
@@ -4422,6 +4438,12 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
 				amdgpu_dm_update_connector_after_detect(aconnector);
 				setup_backlight_device(dm, aconnector);
 
+				/*
+				 * Disable psr if replay can be enabled
+				 */
+				if (replay_feature_enabled && amdgpu_dm_setup_replay(link, aconnector))
+					psr_feature_enabled = false;
+
 				if (psr_feature_enabled)
 					amdgpu_dm_set_psr_caps(link);
 

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c

@@ -29,6 +29,7 @@
 #include "dc.h"
 #include "amdgpu.h"
 #include "amdgpu_dm_psr.h"
+#include "amdgpu_dm_replay.h"
 #include "amdgpu_dm_crtc.h"
 #include "amdgpu_dm_plane.h"
 #include "amdgpu_dm_trace.h"
@@ -123,7 +124,12 @@ static void vblank_control_worker(struct work_struct *work)
 	 * fill_dc_dirty_rects().
 	 */
 	if (vblank_work->stream && vblank_work->stream->link) {
-		if (vblank_work->enable) {
+		/*
+		 * Prioritize replay, instead of psr
+		 */
+		if (vblank_work->stream->link->replay_settings.replay_feature_enabled)
+			amdgpu_dm_replay_enable(vblank_work->stream, false);
+		else if (vblank_work->enable) {
 			if (vblank_work->stream->link->psr_settings.psr_version < DC_PSR_VERSION_SU_1 &&
 			    vblank_work->stream->link->psr_settings.psr_allow_active)
 				amdgpu_dm_psr_disable(vblank_work->stream);
@@ -132,6 +138,7 @@ static void vblank_control_worker(struct work_struct *work)
 #ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
 			   !amdgpu_dm_crc_window_is_activated(&vblank_work->acrtc->base) &&
 #endif
+			   vblank_work->stream->link->panel_config.psr.disallow_replay &&
 			   vblank_work->acrtc->dm_irq_params.allow_psr_entry) {
 			amdgpu_dm_psr_enable(vblank_work->stream);
 		}

drivers/gpu/drm/amd/include/amd_shared.h

@@ -240,6 +240,7 @@ enum DC_FEATURE_MASK {
 	DC_DISABLE_LTTPR_DP2_0 = (1 << 6), //0x40, disabled by default
 	DC_PSR_ALLOW_SMU_OPT = (1 << 7), //0x80, disabled by default
 	DC_PSR_ALLOW_MULTI_DISP_OPT = (1 << 8), //0x100, disabled by default
+	DC_REPLAY_MASK = (1 << 9), //0x200, disabled by default for dcn < 3.1.4
 };
 
 enum DC_DEBUG_MASK {
@@ -250,6 +251,7 @@ enum DC_DEBUG_MASK {
 	DC_DISABLE_PSR = 0x10,
 	DC_FORCE_SUBVP_MCLK_SWITCH = 0x20,
 	DC_DISABLE_MPO = 0x40,
+	DC_DISABLE_REPLAY = 0x50,
 	DC_ENABLE_DPIA_TRACE = 0x80,
 };