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ASoC: rockchip: i2s-tdm: Workaround for Skyworth 8K TVs' Playback

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Bring back CLK ASAP after cfg changed to make SINK devices active
on HDMI-PATH-ALWAYS-ON situation, this workaround for some TVs no
sound issue. at the moment, it's 8K@60Hz display situation.

On HDMI-PATH-ALWAYS-ON situation, we almost keep XFER always on,
so, for new data start, suggested to STOP-CLEAR-START to make sure
data aligned.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Change-Id: I56f97d7246cf790ea33a7410eff418baeeecc6d0
This commit is contained in:
Sugar Zhang
2022-09-20 15:37:04 +08:00
committed by Tao Huang
parent bc8ef86861
commit f3fe5ad04b
1 changed files with 22 additions and 10 deletions
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32
sound/soc/rockchip/rockchip_i2s_tdm.c
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@@ -591,6 +591,17 @@ static void rockchip_i2s_tdm_trcm_resume(struct snd_pcm_substream *substream,
static void rockchip_i2s_tdm_start(struct rk_i2s_tdm_dev *i2s_tdm, int stream)
{
/*
* On HDMI-PATH-ALWAYS-ON situation, we almost keep XFER always on,
* so, for new data start, suggested to STOP-CLEAR-START to make sure
* data aligned.
*/
if ((i2s_tdm->quirks & QUIRK_HDMI_PATH) &&
(i2s_tdm->quirks & QUIRK_ALWAYS_ON) &&
(stream == SNDRV_PCM_STREAM_PLAYBACK)) {
rockchip_i2s_tdm_xfer_stop(i2s_tdm, stream, true);
}
rockchip_i2s_tdm_dma_ctrl(i2s_tdm, stream, 1);
if (i2s_tdm->clk_trcm)
@@ -1127,6 +1138,17 @@ static int rockchip_i2s_tdm_params(struct snd_pcm_substream *substream,
fmt);
}
/*
* Bring back CLK ASAP after cfg changed to make SINK devices active
* on HDMI-PATH-ALWAYS-ON situation, this workaround for some TVs no
* sound issue. at the moment, it's 8K@60Hz display situation.
*/
if ((i2s_tdm->quirks & QUIRK_HDMI_PATH) &&
(i2s_tdm->quirks & QUIRK_ALWAYS_ON) &&
(substream->stream == SNDRV_PCM_STREAM_PLAYBACK)) {
rockchip_i2s_tdm_xfer_start(i2s_tdm, SNDRV_PCM_STREAM_PLAYBACK);
}
return 0;
}
@@ -1498,16 +1520,6 @@ static int rockchip_i2s_tdm_startup(struct snd_pcm_substream *substream,
i2s_tdm->substreams[substream->stream] = substream;
/*
* Suggested to stop audio source before HDMI configure to make
* sure audio data integrity on HDMI-PATH-ALWAYS-ON situation.
*/
if ((i2s_tdm->quirks & QUIRK_HDMI_PATH) &&
(i2s_tdm->quirks & QUIRK_ALWAYS_ON) &&
(substream->stream == SNDRV_PCM_STREAM_PLAYBACK)) {
rockchip_i2s_tdm_xfer_stop(i2s_tdm, substream->stream, true);
}
return 0;
}