drm/amd/display: fix eDP bootup/S4 backlight on

also pass-in correct dispclk tor DMCU
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_resource.c

@@ -169,16 +169,14 @@ static void update_num_audio(
 	unsigned int *num_audio,
 	struct audio_support *aud_support)
 {
+	aud_support->dp_audio = true;
+	aud_support->hdmi_audio_native = false;
+	aud_support->hdmi_audio_on_dongle = false;
+
 	if (straps->hdmi_disable == 0) {
-		aud_support->hdmi_audio_native = true;
-		aud_support->hdmi_audio_on_dongle = true;
-		aud_support->dp_audio = true;
-	} else {
 		if (straps->dc_pinstraps_audio & 0x2) {
 			aud_support->hdmi_audio_on_dongle = true;
-			aud_support->dp_audio = true;
-		} else {
-			aud_support->dp_audio = true;
+			aud_support->hdmi_audio_native = true;
 		}
 	}
 

drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c

@@ -327,13 +327,14 @@ static bool dce_clock_set_min_clocks_state(
 	return true;
 }
 
-static void dce_set_clock(
+static int dce_set_clock(
 	struct display_clock *clk,
 	int requested_clk_khz)
 {
 	struct dce_disp_clk *clk_dce = TO_DCE_CLOCKS(clk);
 	struct bp_pixel_clock_parameters pxl_clk_params = { 0 };
 	struct dc_bios *bp = clk->ctx->dc_bios;
+	int actual_clock = requested_clk_khz;
 
 	/* Make sure requested clock isn't lower than minimum threshold*/
 	if (requested_clk_khz > 0)
@@ -351,15 +352,17 @@ static void dce_set_clock(
 		/* Cache the fixed display clock*/
 		clk_dce->dfs_bypass_disp_clk =
 			pxl_clk_params.dfs_bypass_display_clock;
+		actual_clock = pxl_clk_params.dfs_bypass_display_clock;
 	}
 
 	/* from power down, we need mark the clock state as ClocksStateNominal
 	 * from HWReset, so when resume we will call pplib voltage regulator.*/
 	if (requested_clk_khz == 0)
 		clk->cur_min_clks_state = DM_PP_CLOCKS_STATE_NOMINAL;
+	return actual_clock;
 }
 
-static void dce_psr_set_clock(
+static int dce_psr_set_clock(
 	struct display_clock *clk,
 	int requested_clk_khz)
 {
@@ -367,13 +370,15 @@ static void dce_psr_set_clock(
 	struct dc_context *ctx = clk_dce->base.ctx;
 	struct core_dc *core_dc = DC_TO_CORE(ctx->dc);
 	struct dmcu *dmcu = core_dc->res_pool->dmcu;
+	int actual_clk_khz = requested_clk_khz;
 
-	dce_set_clock(clk, requested_clk_khz);
+	actual_clk_khz = dce_set_clock(clk, requested_clk_khz);
 
-	dmcu->funcs->set_psr_wait_loop(dmcu, requested_clk_khz / 1000 / 7);
+	dmcu->funcs->set_psr_wait_loop(dmcu, actual_clk_khz / 1000 / 7);
+	return actual_clk_khz;
 }
 
-static void dce112_set_clock(
+static int dce112_set_clock(
 	struct display_clock *clk,
 	int requested_clk_khz)
 {
@@ -383,7 +388,7 @@ static void dce112_set_clock(
 	struct core_dc *core_dc = DC_TO_CORE(clk->ctx->dc);
 	struct abm *abm =  core_dc->res_pool->abm;
 	struct dmcu *dmcu = core_dc->res_pool->dmcu;
-
+	int actual_clock = requested_clk_khz;
 	/* Prepare to program display clock*/
 	memset(&dce_clk_params, 0, sizeof(dce_clk_params));
 
@@ -397,6 +402,7 @@ static void dce112_set_clock(
 	dce_clk_params.clock_type = DCECLOCK_TYPE_DISPLAY_CLOCK;
 
 	bp->funcs->set_dce_clock(bp, &dce_clk_params);
+	actual_clock = dce_clk_params.target_clock_frequency;
 
 	/* from power down, we need mark the clock state as ClocksStateNominal
 	 * from HWReset, so when resume we will call pplib voltage regulator.*/
@@ -415,8 +421,8 @@ static void dce112_set_clock(
 
 	if (abm->funcs->is_dmcu_initialized(abm))
 		dmcu->funcs->set_psr_wait_loop(dmcu,
-				requested_clk_khz / 1000 / 7);
-
+				actual_clock / 1000 / 7);
+	return actual_clock;
 }
 
 static void dce_clock_read_integrated_info(struct dce_disp_clk *clk_dce)

drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c

@@ -1288,6 +1288,8 @@ void dce110_link_encoder_disable_output(
 		/* OF_SKIP_POWER_DOWN_INACTIVE_ENCODER */
 		return;
 	}
+	if (enc110->base.connector.id == CONNECTOR_ID_EDP)
+		dce110_link_encoder_edp_backlight_control(enc, false);
 	/* Power-down RX and disable GPU PHY should be paired.
 	 * Disabling PHY without powering down RX may cause
 	 * symbol lock loss, on which we will get DP Sink interrupt. */

drivers/gpu/drm/amd/display/dc/inc/hw/display_clock.h

@@ -62,7 +62,7 @@ struct display_clock {
 };
 
 struct display_clock_funcs {
-	void (*set_clock)(struct display_clock *disp_clk,
+	int (*set_clock)(struct display_clock *disp_clk,
 		int requested_clock_khz);
 
 	enum dm_pp_clocks_state (*get_required_clocks_state)(