drm/radeon: Add a common function for DFS handling

[karo-tx-linux.git] / drivers / gpu / drm / radeon / dce6_afmt.c

diff --git a/drivers/gpu/drm/radeon/dce6_afmt.c b/drivers/gpu/drm/radeon/dce6_afmt.c
index 752072771388419c6b932f77aecc84db64d89e1b..367a916f364e94617a1b15fcd7d78cd3f90c8dc6 100644 (file)
--- a/drivers/gpu/drm/radeon/dce6_afmt.c
+++ b/drivers/gpu/drm/radeon/dce6_afmt.c
@@ -301,6 +301,14 @@ void dce6_dp_audio_set_dto(struct radeon_device *rdev,
         * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
         */
        if (ASIC_IS_DCE8(rdev)) {
+               unsigned int div = (RREG32(DENTIST_DISPCLK_CNTL) &
+                       DENTIST_DPREFCLK_WDIVIDER_MASK) >>
+                       DENTIST_DPREFCLK_WDIVIDER_SHIFT;
+               div = radeon_audio_decode_dfs_div(div);
+
+               if (div)
+                       clock = clock * 100 / div;
+
                WREG32(DCE8_DCCG_AUDIO_DTO1_PHASE, 24000);
                WREG32(DCE8_DCCG_AUDIO_DTO1_MODULE, clock);
        } else {