drm/amd/display:Use Pixel clock in 100Hz units for HDMI Audio wall clock DTO

[Why]
-Pass and use pixel clock in 100 Hz to Audio for HDMI
audio DTO for Audio wall clock programming so audio DTO gets
increased precision for timings with /1001 factor.
-For HDMI TMDS for N and CTS ACR tables are based on 10 KHz
units, these does not need to be modified as N and CTS values
are still valid using current tables.

Signed-off-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2 files changed, 29 insertions, 29 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c b/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
index 4a10a5d22c90..6147530144eb 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
@@ -145,20 +145,20 @@ static void check_audio_bandwidth_hdmi(
 	if (channel_count > 2) {
 
 		/* Based on HDMI spec 1.3 Table 7.5 */
-		if ((crtc_info->requested_pixel_clock <= 27000) &&
+		if ((crtc_info->requested_pixel_clock_100Hz <= 270000) &&
 		(crtc_info->v_active <= 576) &&
 		!(crtc_info->interlaced) &&
 		!(crtc_info->pixel_repetition == 2 ||
 		crtc_info->pixel_repetition == 4)) {
 			limit_freq_to_48_khz = true;
 
-		} else if ((crtc_info->requested_pixel_clock <= 27000) &&
+		} else if ((crtc_info->requested_pixel_clock_100Hz <= 270000) &&
 				(crtc_info->v_active <= 576) &&
 				(crtc_info->interlaced) &&
 				(crtc_info->pixel_repetition == 2)) {
 			limit_freq_to_88_2_khz = true;
 
-		} else if ((crtc_info->requested_pixel_clock <= 54000) &&
+		} else if ((crtc_info->requested_pixel_clock_100Hz <= 540000) &&
 				(crtc_info->v_active <= 576) &&
 				!(crtc_info->interlaced)) {
 			limit_freq_to_174_4_khz = true;
@@ -737,8 +737,8 @@ void dce_aud_az_configure(
 
 /* search pixel clock value for Azalia HDMI Audio */
 static void get_azalia_clock_info_hdmi(
-	uint32_t crtc_pixel_clock_in_khz,
-	uint32_t actual_pixel_clock_in_khz,
+	uint32_t crtc_pixel_clock_100hz,
+	uint32_t actual_pixel_clock_100Hz,
 	struct azalia_clock_info *azalia_clock_info)
 {
 	/* audio_dto_phase= 24 * 10,000;
@@ -749,11 +749,11 @@ static void get_azalia_clock_info_hdmi(
 	/* audio_dto_module = PCLKFrequency * 10,000;
 	 *  [khz] -> [100Hz] */
 	azalia_clock_info->audio_dto_module =
-			actual_pixel_clock_in_khz * 10;
+			actual_pixel_clock_100Hz;
 }
 
 static void get_azalia_clock_info_dp(
-	uint32_t requested_pixel_clock_in_khz,
+	uint32_t requested_pixel_clock_100Hz,
 	const struct audio_pll_info *pll_info,
 	struct azalia_clock_info *azalia_clock_info)
 {
@@ -792,15 +792,15 @@ void dce_aud_wall_dto_setup(
 
 		/* calculate DTO settings */
 		get_azalia_clock_info_hdmi(
-			crtc_info->requested_pixel_clock,
-			crtc_info->calculated_pixel_clock,
+			crtc_info->requested_pixel_clock_100Hz,
+			crtc_info->calculated_pixel_clock_100Hz,
 			&clock_info);
 
-		DC_LOG_HW_AUDIO("\n%s:Input::requested_pixel_clock = %d"\
-				"calculated_pixel_clock =%d\n"\
+		DC_LOG_HW_AUDIO("\n%s:Input::requested_pixel_clock_100Hz = %d"\
+				"calculated_pixel_clock_100Hz =%d\n"\
 				"audio_dto_module = %d audio_dto_phase =%d \n\n", __func__,\
-				crtc_info->requested_pixel_clock,\
-				crtc_info->calculated_pixel_clock,\
+				crtc_info->requested_pixel_clock_100Hz,\
+				crtc_info->calculated_pixel_clock_100Hz,\
 				clock_info.audio_dto_module,\
 				clock_info.audio_dto_phase);
 
@@ -833,7 +833,7 @@ void dce_aud_wall_dto_setup(
 
 		calculate DTO settings */
 		get_azalia_clock_info_dp(
-			crtc_info->requested_pixel_clock,
+			crtc_info->requested_pixel_clock_100Hz,
 			pll_info,
 			&clock_info);
 
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
index 5e2b4d47c548..84bbff665be9 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
@@ -1251,13 +1251,13 @@ static uint32_t calc_max_audio_packets_per_line(
 
 static void get_audio_clock_info(
 	enum dc_color_depth color_depth,
-	uint32_t crtc_pixel_clock_in_khz,
-	uint32_t actual_pixel_clock_in_khz,
+	uint32_t crtc_pixel_clock_100Hz,
+	uint32_t actual_pixel_clock_100Hz,
 	struct audio_clock_info *audio_clock_info)
 {
 	const struct audio_clock_info *clock_info;
 	uint32_t index;
-	uint32_t crtc_pixel_clock_in_10khz = crtc_pixel_clock_in_khz / 10;
+	uint32_t crtc_pixel_clock_in_10khz = crtc_pixel_clock_100Hz / 100;
 	uint32_t audio_array_size;
 
 	switch (color_depth) {
@@ -1294,16 +1294,16 @@ static void get_audio_clock_info(
 	}
 
 	/* not found */
-	if (actual_pixel_clock_in_khz == 0)
-		actual_pixel_clock_in_khz = crtc_pixel_clock_in_khz;
+	if (actual_pixel_clock_100Hz == 0)
+		actual_pixel_clock_100Hz = crtc_pixel_clock_100Hz;
 
 	/* See HDMI spec  the table entry under
 	 *  pixel clock of "Other". */
 	audio_clock_info->pixel_clock_in_10khz =
-			actual_pixel_clock_in_khz / 10;
-	audio_clock_info->cts_32khz = actual_pixel_clock_in_khz;
-	audio_clock_info->cts_44khz = actual_pixel_clock_in_khz;
-	audio_clock_info->cts_48khz = actual_pixel_clock_in_khz;
+			actual_pixel_clock_100Hz / 100;
+	audio_clock_info->cts_32khz = actual_pixel_clock_100Hz / 10;
+	audio_clock_info->cts_44khz = actual_pixel_clock_100Hz / 10;
+	audio_clock_info->cts_48khz = actual_pixel_clock_100Hz / 10;
 
 	audio_clock_info->n_32khz = 4096;
 	audio_clock_info->n_44khz = 6272;
@@ -1369,14 +1369,14 @@ static void dce110_se_setup_hdmi_audio(
 
 	/* Program audio clock sample/regeneration parameters */
 	get_audio_clock_info(crtc_info->color_depth,
-			     crtc_info->requested_pixel_clock,
-			     crtc_info->calculated_pixel_clock,
+			     crtc_info->requested_pixel_clock_100Hz,
+			     crtc_info->calculated_pixel_clock_100Hz,
 			     &audio_clock_info);
 	DC_LOG_HW_AUDIO(
-			"\n%s:Input::requested_pixel_clock = %d"	\
-			"calculated_pixel_clock = %d \n", __func__,	\
-			crtc_info->requested_pixel_clock,		\
-			crtc_info->calculated_pixel_clock);
+			"\n%s:Input::requested_pixel_clock_100Hz = %d"	\
+			"calculated_pixel_clock_100Hz = %d \n", __func__,	\
+			crtc_info->requested_pixel_clock_100Hz,		\
+			crtc_info->calculated_pixel_clock_100Hz);
 
 	/* HDMI_ACR_32_0__HDMI_ACR_CTS_32_MASK */
 	REG_UPDATE(HDMI_ACR_32_0, HDMI_ACR_CTS_32, audio_clock_info.cts_32khz);