From: Alex Deucher Date: Thu, 18 Apr 2013 14:50:55 +0000 (-0400) Subject: drm/radeon: clean up audio dto programming X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b1f6f47e3e33c4a74534f1301aca241ffabbb3a0;p=linux-beck.git drm/radeon: clean up audio dto programming Split into DCE2/3 and DCE4/5 variants. Still todo is to calculate the DTO dividers properly. Add proper formula to the comments. Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c index 380933bc1782..9fc22ee40f96 100644 --- a/drivers/gpu/drm/radeon/evergreen_hdmi.c +++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c @@ -85,6 +85,30 @@ static void evergreen_hdmi_update_avi_infoframe(struct drm_encoder *encoder, frame[0xC] | (frame[0xD] << 8)); } +static void evergreen_audio_set_dto(struct drm_encoder *encoder, u32 clock) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc); + u32 base_rate = 48000; + + if (!dig || !dig->afmt) + return; + + /* XXX: properly calculate this */ + /* XXX two dtos; generally use dto0 for hdmi */ + /* 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 + */ + WREG32(DCCG_AUDIO_DTO0_PHASE, (base_rate*50) & 0xffffff); + WREG32(DCCG_AUDIO_DTO0_MODULE, (clock*100) & 0xffffff); + WREG32(DCCG_AUDIO_DTO_SOURCE, DCCG_AUDIO_DTO0_SOURCE_SEL(radeon_crtc->crtc_id)); +} + + /* * update the info frames with the data from the current display mode */ @@ -104,7 +128,7 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode return; offset = dig->afmt->offset; - r600_audio_set_clock(encoder, mode->clock); + evergreen_audio_set_dto(encoder, mode->clock); WREG32(HDMI_VBI_PACKET_CONTROL + offset, HDMI_NULL_SEND); /* send null packets when required */ diff --git a/drivers/gpu/drm/radeon/r600_audio.c b/drivers/gpu/drm/radeon/r600_audio.c index 72561e4a0799..c92eb86a8e55 100644 --- a/drivers/gpu/drm/radeon/r600_audio.c +++ b/drivers/gpu/drm/radeon/r600_audio.c @@ -180,65 +180,6 @@ int r600_audio_init(struct radeon_device *rdev) return 0; } -/* - * atach the audio codec to the clock source of the encoder - */ -void r600_audio_set_clock(struct drm_encoder *encoder, int clock) -{ - struct drm_device *dev = encoder->dev; - struct radeon_device *rdev = dev->dev_private; - struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); - struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; - struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc); - int base_rate = 48000; - - switch (radeon_encoder->encoder_id) { - case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: - case ENCODER_OBJECT_ID_INTERNAL_LVTM1: - WREG32_P(R600_AUDIO_TIMING, 0, ~0x301); - break; - case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: - case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: - case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2: - case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA: - WREG32_P(R600_AUDIO_TIMING, 0x100, ~0x301); - break; - default: - dev_err(rdev->dev, "Unsupported encoder type 0x%02X\n", - radeon_encoder->encoder_id); - return; - } - - if (ASIC_IS_DCE4(rdev)) { - /* TODO: other PLLs? */ - WREG32(EVERGREEN_AUDIO_PLL1_MUL, base_rate * 10); - WREG32(EVERGREEN_AUDIO_PLL1_DIV, clock * 10); - WREG32(EVERGREEN_AUDIO_PLL1_UNK, 0x00000071); - - /* Select DTO source */ - WREG32(0x5ac, radeon_crtc->crtc_id); - } else { - switch (dig->dig_encoder) { - case 0: - WREG32(R600_AUDIO_PLL1_MUL, base_rate * 50); - WREG32(R600_AUDIO_PLL1_DIV, clock * 100); - WREG32(R600_AUDIO_CLK_SRCSEL, 0); - break; - - case 1: - WREG32(R600_AUDIO_PLL2_MUL, base_rate * 50); - WREG32(R600_AUDIO_PLL2_DIV, clock * 100); - WREG32(R600_AUDIO_CLK_SRCSEL, 1); - break; - default: - dev_err(rdev->dev, - "Unsupported DIG on encoder 0x%02X\n", - radeon_encoder->encoder_id); - return; - } - } -} - /* * release the audio timer * TODO: How to do this correctly on SMP systems? diff --git a/drivers/gpu/drm/radeon/r600_hdmi.c b/drivers/gpu/drm/radeon/r600_hdmi.c index 95397b215701..62721bfabe77 100644 --- a/drivers/gpu/drm/radeon/r600_hdmi.c +++ b/drivers/gpu/drm/radeon/r600_hdmi.c @@ -226,6 +226,30 @@ static void r600_hdmi_audio_workaround(struct drm_encoder *encoder) value, ~HDMI0_AUDIO_TEST_EN); } +void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + u32 base_rate = 48000; + + if (!dig || !dig->afmt) + return; + + /* there are two DTOs selected by DCCG_AUDIO_DTO_SELECT. + * doesn't matter which one you use. Just use the first one. + */ + /* XXX: properly calculate this */ + /* XXX two dtos; generally use dto0 for hdmi */ + /* 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 + */ + WREG32(DCCG_AUDIO_DTO0_PHASE, (base_rate*50) & 0xffffff); + WREG32(DCCG_AUDIO_DTO0_MODULE, (clock*100) & 0xffffff); + WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */ +} /* * update the info frames with the data from the current display mode @@ -246,7 +270,7 @@ void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mod return; offset = dig->afmt->offset; - r600_audio_set_clock(encoder, mode->clock); + r600_audio_set_dto(encoder, mode->clock); WREG32(HDMI0_VBI_PACKET_CONTROL + offset, HDMI0_NULL_SEND); /* send null packets when required */ diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h index 2add5268d280..fa8b8bf61c2d 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.h +++ b/drivers/gpu/drm/radeon/radeon_asic.h @@ -374,7 +374,6 @@ void r600_disable_interrupts(struct radeon_device *rdev); void r600_rlc_stop(struct radeon_device *rdev); /* r600 audio */ int r600_audio_init(struct radeon_device *rdev); -void r600_audio_set_clock(struct drm_encoder *encoder, int clock); struct r600_audio r600_audio_status(struct radeon_device *rdev); void r600_audio_fini(struct radeon_device *rdev); int r600_hdmi_buffer_status_changed(struct drm_encoder *encoder);