radeon/audio: fix DP audio on DCE6

Split DCE6 and DCE8 programming of DCCG_AUDIO_DTO1
registers to properly enable DP audio for both DCE
revisions.
Signed-off-by: Slava Grigorev <slava.grigorev@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/dce6_afmt.c

@@ -26,6 +26,9 @@
 #include "radeon_audio.h"
 #include "sid.h"
 
+#define DCE8_DCCG_AUDIO_DTO1_PHASE	0x05b8
+#define DCE8_DCCG_AUDIO_DTO1_MODULE	0x05bc
+
 u32 dce6_endpoint_rreg(struct radeon_device *rdev,
 			      u32 block_offset, u32 reg)
 {
@@ -284,8 +287,13 @@ void dce6_dp_audio_set_dto(struct radeon_device *rdev,
 	 * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
 	 * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
 	 */
+	if (ASIC_IS_DCE8(rdev)) {
+		WREG32(DCE8_DCCG_AUDIO_DTO1_PHASE, 24000);
+		WREG32(DCE8_DCCG_AUDIO_DTO1_MODULE, clock);
+	} else {
 		WREG32(DCCG_AUDIO_DTO1_PHASE, 24000);
 		WREG32(DCCG_AUDIO_DTO1_MODULE, clock);
+	}
 }
 
 void dce6_dp_enable(struct drm_encoder *encoder, bool enable)

drivers/gpu/drm/radeon/sid.h

@@ -912,8 +912,8 @@
 
 #define DCCG_AUDIO_DTO0_PHASE                           0x05b0
 #define DCCG_AUDIO_DTO0_MODULE                          0x05b4
-#define DCCG_AUDIO_DTO1_PHASE                           0x05b8
-#define DCCG_AUDIO_DTO1_MODULE                          0x05bc
+#define DCCG_AUDIO_DTO1_PHASE                           0x05c0
+#define DCCG_AUDIO_DTO1_MODULE                          0x05c4
 
 #define AFMT_AUDIO_SRC_CONTROL                          0x713c
 #define		AFMT_AUDIO_SRC_SELECT(x)		(((x) & 7) << 0)