diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/dce3_1_afmt.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/dce3_1_afmt.c | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/dce3_1_afmt.c b/drivers/gpu/drm/radeon/dce3_1_afmt.c index f7b26592c74f..6cb2f1171539 100644 --- a/drivers/gpu/drm/radeon/dce3_1_afmt.c +++ b/drivers/gpu/drm/radeon/dce3_1_afmt.c @@ -113,6 +113,60 @@ void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder, } } +void dce3_2_audio_set_dto(struct radeon_device *rdev, + struct radeon_crtc *crtc, unsigned int clock) +{ + struct radeon_encoder *radeon_encoder; + struct radeon_encoder_atom_dig *dig; + unsigned int max_ratio = clock / 24000; + u32 dto_phase; + u32 wallclock_ratio; + u32 dto_cntl; + + if (!crtc) + return; + + radeon_encoder = to_radeon_encoder(crtc->encoder); + dig = radeon_encoder->enc_priv; + + if (!dig) + return; + + if (max_ratio >= 8) { + dto_phase = 192 * 1000; + wallclock_ratio = 3; + } else if (max_ratio >= 4) { + dto_phase = 96 * 1000; + wallclock_ratio = 2; + } else if (max_ratio >= 2) { + dto_phase = 48 * 1000; + wallclock_ratio = 1; + } else { + dto_phase = 24 * 1000; + wallclock_ratio = 0; + } + + /* Express [24MHz / target pixel clock] as an exact rational + * number (coefficient of two integer numbers. DCCG_AUDIO_DTOx_PHASE + * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator + */ + if (dig->dig_encoder == 0) { + dto_cntl = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK; + dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio); + WREG32(DCCG_AUDIO_DTO0_CNTL, dto_cntl); + WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase); + WREG32(DCCG_AUDIO_DTO0_MODULE, clock); + WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */ + } else { + dto_cntl = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK; + dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio); + WREG32(DCCG_AUDIO_DTO1_CNTL, dto_cntl); + WREG32(DCCG_AUDIO_DTO1_PHASE, dto_phase); + WREG32(DCCG_AUDIO_DTO1_MODULE, clock); + WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */ + } +} + /* * update the info frames with the data from the current display mode */ @@ -139,7 +193,7 @@ void dce3_1_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *m dig->afmt->pin = radeon_audio_get_pin(encoder); radeon_audio_enable(rdev, dig->afmt->pin, 0); - r600_audio_set_dto(encoder, mode->clock); + radeon_audio_set_dto(encoder, mode->clock); WREG32(HDMI0_VBI_PACKET_CONTROL + offset, HDMI0_NULL_SEND); /* send null packets when required */ |
