5 files changed, 132 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 331a7517176b..644005846433 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -3536,3 +3536,57 @@ void dc_disable_accelerated_mode(struct dc *dc)
 {
 	bios_set_scratch_acc_mode_change(dc->ctx->dc_bios, 0);
 }
+
+
+/**
+ *****************************************************************************
+ *  dc_notify_vsync_int_state() - notifies vsync enable/disable state
+ *  @dc: dc structure
+ *	@stream: stream where vsync int state changed
+ *	@enable: whether vsync is enabled or disabled
+ *
+ *  Called when vsync is enabled/disabled
+ *	Will notify DMUB to start/stop ABM interrupts after steady state is reached
+ *
+ *****************************************************************************
+ */
+void dc_notify_vsync_int_state(struct dc *dc, struct dc_stream_state *stream, bool enable)
+{
+	int i;
+	int edp_num;
+	struct pipe_ctx *pipe = NULL;
+	struct dc_link *link = stream->sink->link;
+	struct dc_link *edp_links[MAX_NUM_EDP];
+
+
+	if (link->psr_settings.psr_feature_enabled)
+		return;
+
+	/*find primary pipe associated with stream*/
+	for (i = 0; i < MAX_PIPES; i++) {
+		pipe = &dc->current_state->res_ctx.pipe_ctx[i];
+
+		if (pipe->stream == stream && pipe->stream_res.tg)
+			break;
+	}
+
+	if (i == MAX_PIPES) {
+		ASSERT(0);
+		return;
+	}
+
+	get_edp_links(dc, edp_links, &edp_num);
+
+	/* Determine panel inst */
+	for (i = 0; i < edp_num; i++) {
+		if (edp_links[i] == link)
+			break;
+	}
+
+	if (i == edp_num) {
+		return;
+	}
+
+	if (pipe->stream_res.abm && pipe->stream_res.abm->funcs->set_abm_pause)
+		pipe->stream_res.abm->funcs->set_abm_pause(pipe->stream_res.abm, !enable, i, pipe->stream_res.tg->inst);
+}
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index e5dcbee6e672..b194a2727bd8 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -1313,6 +1313,8 @@ void dc_interrupt_ack(struct dc *dc, enum dc_irq_source src);
 enum dc_irq_source dc_get_hpd_irq_source_at_index(
 		struct dc *dc, uint32_t link_index);
 
+void dc_notify_vsync_int_state(struct dc *dc, struct dc_stream_state *stream, bool enable);
+
 /*******************************************************************************
  * Power Interfaces
  ******************************************************************************/
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c
index 54a1408c8015..fb0dec4ed3a6 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c
@@ -203,12 +203,33 @@ static bool dmub_abm_init_config(struct abm *abm,
 	return true;
 }
 
+static bool dmub_abm_set_pause(struct abm *abm, bool pause, unsigned int panel_inst, unsigned int stream_inst)
+{
+	union dmub_rb_cmd cmd;
+	struct dc_context *dc = abm->ctx;
+	uint8_t panel_mask = 0x01 << panel_inst;
+
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.abm_pause.header.type = DMUB_CMD__ABM;
+	cmd.abm_pause.header.sub_type = DMUB_CMD__ABM_PAUSE;
+	cmd.abm_pause.abm_pause_data.enable = pause;
+	cmd.abm_pause.abm_pause_data.panel_mask = panel_mask;
+	cmd.abm_set_level.header.payload_bytes = sizeof(struct dmub_cmd_abm_pause_data);
+
+	dc_dmub_srv_cmd_queue(dc->dmub_srv, &cmd);
+	dc_dmub_srv_cmd_execute(dc->dmub_srv);
+	dc_dmub_srv_wait_idle(dc->dmub_srv);
+
+	return true;
+}
+
 static const struct abm_funcs abm_funcs = {
 	.abm_init = dmub_abm_init,
 	.set_abm_level = dmub_abm_set_level,
 	.get_current_backlight = dmub_abm_get_current_backlight,
 	.get_target_backlight = dmub_abm_get_target_backlight,
 	.init_abm_config = dmub_abm_init_config,
+	.set_abm_pause = dmub_abm_set_pause,
 };
 
 static void dmub_abm_construct(
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h b/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h
index 142753644377..ecb4191b6e64 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h
@@ -54,6 +54,7 @@ struct abm_funcs {
 			const char *src,
 			unsigned int bytes,
 			unsigned int inst);
+	bool (*set_abm_pause)(struct abm *abm, bool pause, unsigned int panel_inst, unsigned int otg_inst);
 };
 
 #endif
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index 4647129c66fd..70e6d6905fda 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -1731,6 +1731,11 @@ enum dmub_cmd_abm_type {
 	 * Enable/disable fractional duty cycle for backlight PWM.
 	 */
 	DMUB_CMD__ABM_SET_PWM_FRAC	= 5,
+
+	/**
+	 * unregister vertical interrupt after steady state is reached
+	 */
+	DMUB_CMD__ABM_PAUSE	= 6,
 };
 
 /**
@@ -2087,6 +2092,50 @@ struct dmub_rb_cmd_abm_init_config {
 };
 
 /**
+ * Data passed from driver to FW in a DMUB_CMD__ABM_PAUSE command.
+ */
+
+struct dmub_cmd_abm_pause_data {
+
+	/**
+	 * Panel Control HW instance mask.
+	 * Bit 0 is Panel Control HW instance 0.
+	 * Bit 1 is Panel Control HW instance 1.
+	 */
+	uint8_t panel_mask;
+
+	/**
+	 * OTG hw instance
+	 */
+	uint8_t otg_inst;
+
+	/**
+	 * Enable or disable ABM pause
+	 */
+	uint8_t enable;
+
+	/**
+	 * Explicit padding to 4 byte boundary.
+	 */
+	uint8_t pad[1];
+};
+
+/**
+ * Definition of a DMUB_CMD__ABM_PAUSE command.
+ */
+struct dmub_rb_cmd_abm_pause {
+	/**
+	 * Command header.
+	 */
+	struct dmub_cmd_header header;
+
+	/**
+	 * Data passed from driver to FW in a DMUB_CMD__ABM_PAUSE command.
+	 */
+	struct dmub_cmd_abm_pause_data abm_pause_data;
+};
+
+/**
  * Data passed from driver to FW in a DMUB_CMD__QUERY_FEATURE_CAPS command.
  */
 struct dmub_cmd_query_feature_caps_data {
@@ -2365,6 +2414,11 @@ union dmub_rb_cmd {
 	struct dmub_rb_cmd_abm_init_config abm_init_config;
 
 	/**
+	 * Definition of a DMUB_CMD__ABM_PAUSE command.
+	 */
+	struct dmub_rb_cmd_abm_pause abm_pause;
+
+	/**
 	 * Definition of a DMUB_CMD__DP_AUX_ACCESS command.
 	 */
 	struct dmub_rb_cmd_dp_aux_access dp_aux_access;