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| author | Slava Grigorev <slava.grigorev@amd.com> | 2016-01-27 01:35:57 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-01-27 20:50:25 +0300 |
| commit | fe6fc1f132b4300c1f6defd43a5d673eb60a820d (patch) | |
| tree | 8fec06b5d46d630d6887efc148f0b5d9b90dd4f5 /drivers/gpu/drm/radeon/evergreen_hdmi.c | |
| parent | a64c9dab1c4d05c87ec8a1cb9b48915816462143 (diff) | |
| download | linux-fe6fc1f132b4300c1f6defd43a5d673eb60a820d.tar.xz | |
drm/radeon: fix DP audio support for APU with DCE4.1 display engine
Properly setup the DFS divider for DP audio for DCE4.1.
Signed-off-by: Slava Grigorev <slava.grigorev@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/evergreen_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen_hdmi.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c index 9953356fe263..3cf04a2f44bb 100644 --- a/drivers/gpu/drm/radeon/evergreen_hdmi.c +++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c @@ -289,6 +289,16 @@ void dce4_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_DCE41(rdev)) { + unsigned int div = (RREG32(DCE41_DENTIST_DISPCLK_CNTL) & + DENTIST_DPREFCLK_WDIVIDER_MASK) >> + DENTIST_DPREFCLK_WDIVIDER_SHIFT; + div = radeon_audio_decode_dfs_div(div); + + if (div) + clock = 100 * clock / div; + } + WREG32(DCCG_AUDIO_DTO1_PHASE, 24000); WREG32(DCCG_AUDIO_DTO1_MODULE, clock); } |