diff options
| author | Slava Grigorev <slava.grigorev@amd.com> | 2015-12-17 11:09:58 -0500 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-02-01 11:53:44 -0500 |
| commit | 51697d5f76e114f27ec08958ea1970fc55db0438 (patch) | |
| tree | 24814ed9b5e98fa25f02f47ad5d865f24385a39f /drivers/gpu | |
| parent | 9e612a000cf889cfa624d984ccef770fdce43cf6 (diff) | |
drm/radeon: Fix "slow" audio over DP on DCE8+
[ Upstream commit ac4a9350abddc51ccb897abf0d9f3fd592b97e0b ]
DP audio is derived from the dfs clock.
Signed-off-by: Slava Grigorev <slava.grigorev@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/dce6_afmt.c | 16 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_atombios.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/sid.h | 5 |
4 files changed, 29 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/dce6_afmt.c b/drivers/gpu/drm/radeon/dce6_afmt.c index 44480c1b9738..883dce66e2dc 100644 --- a/drivers/gpu/drm/radeon/dce6_afmt.c +++ b/drivers/gpu/drm/radeon/dce6_afmt.c @@ -282,6 +282,22 @@ 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; + + if (div < 128 && div >= 96) + div -= 64; + else if (div >= 64) + div = div / 2 - 16; + else if (div >= 8) + div /= 4; + else + div = 0; + + if (div) + clock = rdev->clock.gpupll_outputfreq * 10 / div; + WREG32(DCE8_DCCG_AUDIO_DTO1_PHASE, 24000); WREG32(DCE8_DCCG_AUDIO_DTO1_MODULE, clock); } else { diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 91c3f60f8bac..95770d02a679 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -268,6 +268,7 @@ struct radeon_clock { uint32_t current_dispclk; uint32_t dp_extclk; uint32_t max_pixel_clock; + uint32_t gpupll_outputfreq; }; /* diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 8f285244c839..13e5513b73af 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -1263,6 +1263,13 @@ bool radeon_atom_get_clock_info(struct drm_device *dev) rdev->mode_info.firmware_flags = le16_to_cpu(firmware_info->info.usFirmwareCapability.susAccess); + if (ASIC_IS_DCE8(rdev)) { + rdev->clock.gpupll_outputfreq = + le32_to_cpu(firmware_info->info_22.ulGPUPLL_OutputFreq); + if (rdev->clock.gpupll_outputfreq == 0) + rdev->clock.gpupll_outputfreq = 360000; /* 3.6 GHz */ + } + return true; } diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h index 3afac3013983..c126f6bfbed1 100644 --- a/drivers/gpu/drm/radeon/sid.h +++ b/drivers/gpu/drm/radeon/sid.h @@ -915,6 +915,11 @@ #define DCCG_AUDIO_DTO1_PHASE 0x05c0 #define DCCG_AUDIO_DTO1_MODULE 0x05c4 +#define DENTIST_DISPCLK_CNTL 0x0490 +# define DENTIST_DPREFCLK_WDIVIDER(x) (((x) & 0x7f) << 24) +# define DENTIST_DPREFCLK_WDIVIDER_MASK (0x7f << 24) +# define DENTIST_DPREFCLK_WDIVIDER_SHIFT 24 + #define AFMT_AUDIO_SRC_CONTROL 0x713c #define AFMT_AUDIO_SRC_SELECT(x) (((x) & 7) << 0) /* AFMT_AUDIO_SRC_SELECT |