drm/radeon: program DCE2 audio dto just like DCE3

Seems to work like the DCE3 version despite what
the register spec says.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=71975

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/radeon/r600_hdmi.c b/drivers/gpu/drm/radeon/r600_hdmi.c
index 4b89262f3f0e37242de23b7b6ea2fc555d141da3..b7d3ecba43e34d3b559ee072800101532150c631 100644 (file)
--- a/drivers/gpu/drm/radeon/r600_hdmi.c
+++ b/drivers/gpu/drm/radeon/r600_hdmi.c
@@ -304,9 +304,9 @@ void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock)
                        WREG32(DCCG_AUDIO_DTO1_MODULE, dto_modulo);
                        WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */
                }
-       } else if (ASIC_IS_DCE3(rdev)) {
+       } else {
                /* according to the reg specs, this should DCE3.2 only, but in
-                * practice it seems to cover DCE3.0/3.1 as well.
+                * practice it seems to cover DCE2.0/3.0/3.1 as well.
                 */
                if (dig->dig_encoder == 0) {
                        WREG32(DCCG_AUDIO_DTO0_PHASE, base_rate * 100);
@@ -317,10 +317,6 @@ void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock)
                        WREG32(DCCG_AUDIO_DTO1_MODULE, clock * 100);
                        WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */
                }
-       } else {
-               /* according to the reg specs, this should be DCE2.0 and DCE3.0/3.1 */
-               WREG32(AUDIO_DTO, AUDIO_DTO_PHASE(base_rate / 10) |
-                      AUDIO_DTO_MODULE(clock / 10));
        }
 }