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drm/radeon: fix audio dto calculation on DCE3+ (v3)

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Need to set the wallclock ratio and adjust the phase
and module registers appropriately.  May fix problems
with audio timing at certain display timings.

v2: properly handle clocks below 24mhz
v3: rebase r600 changes

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2013-07-30 17:31:07 -04:00
parent ce149a9406
commit 1518dd8efd
4 changed files with 59 additions and 6 deletions
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3
drivers/gpu/drm/radeon/r600d.h
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@@ -933,6 +933,9 @@
#define DCCG_AUDIO_DTO0_LOAD 0x051c
# define DTO_LOAD (1 << 31)
#define DCCG_AUDIO_DTO0_CNTL 0x0520
# define DCCG_AUDIO_DTO_WALLCLOCK_RATIO(x) (((x) & 7) << 0)
# define DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK 7
# define DCCG_AUDIO_DTO_WALLCLOCK_RATIO_SHIFT 0
#define DCCG_AUDIO_DTO1_PHASE 0x0524
#define DCCG_AUDIO_DTO1_MODULE 0x0528