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authorSlava Grigorev <slava.grigorev@amd.com>2015-12-17 11:09:58 -0500
committerAlex Deucher <alexander.deucher@amd.com>2015-12-18 17:29:46 -0500
commitac4a9350abddc51ccb897abf0d9f3fd592b97e0b (patch)
tree8daaa6a5e98278a6da1656a728a1fa2510c150fb /drivers/gpu/drm/radeon
parentee1782c3f27fec5462363af48f27811b049155ab (diff)
drm/radeon: Fix "slow" audio over DP on DCE8+
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
Diffstat (limited to 'drivers/gpu/drm/radeon')
-rw-r--r--drivers/gpu/drm/radeon/dce6_afmt.c16
-rw-r--r--drivers/gpu/drm/radeon/radeon.h1
-rw-r--r--drivers/gpu/drm/radeon/radeon_atombios.c7
-rw-r--r--drivers/gpu/drm/radeon/sid.h5
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 752072771388..6bfc46369db1 100644
--- a/drivers/gpu/drm/radeon/dce6_afmt.c
+++ b/drivers/gpu/drm/radeon/dce6_afmt.c
@@ -301,6 +301,22 @@ 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 cf09102a2aca..a9955e85009a 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 4c4a7218a3bd..d1a7b58dd291 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