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| author | Yakir Yang <ykk@rock-chips.com> | 2019-09-11 16:26:46 +0800 |
|---|---|---|
| committer | Neil Armstrong <narmstrong@baylibre.com> | 2019-09-13 10:43:51 +0200 |
| commit | 3250cdf938dce5447cf4f895bb3ec3b929a95e09 (patch) | |
| tree | 0152d047929dc1715c0e3254fe6526b2e7767d50 /include/drm/bridge | |
| parent | de2358050ab8225117d3252de52f85e260b5dad5 (diff) | |
| download | linux-3250cdf938dce5447cf4f895bb3ec3b929a95e09.tar.bz2 | |
drm: bridge/dw_hdmi: add audio sample channel status setting
When transmitting IEC60985 linear PCM audio, we configure the
Aduio Sample Channel Status information in the IEC60958 frame.
The status bit is already available in iec.status of hdmi_codec_params.
This fix the issue that audio does not come out on some monitors
(e.g. LG 22CV241)
Note that these registers are only for interfaces:
I2S audio interface, General Purpose Audio (GPA), or AHB audio DMA
(AHBAUDDMA).
For S/PDIF interface this information comes from the stream.
Currently this function dw_hdmi_set_channel_status is only called
from dw-hdmi-i2s-audio in I2S setup.
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190911082646.134347-1-cychiang@chromium.org
Diffstat (limited to 'include/drm/bridge')
| -rw-r--r-- | include/drm/bridge/dw_hdmi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index cf528c289857..4b3e863c4f8a 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -156,6 +156,7 @@ void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense); void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate); void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt); +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, u8 *channel_status); void dw_hdmi_set_channel_allocation(struct dw_hdmi *hdmi, unsigned int ca); void dw_hdmi_audio_enable(struct dw_hdmi *hdmi); void dw_hdmi_audio_disable(struct dw_hdmi *hdmi); |