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54 lines
2.0 KiB
Diff
54 lines
2.0 KiB
Diff
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From ab79274c7bab8e16822077ae0850e6cf9b2ec1b4 Mon Sep 17 00:00:00 2001
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From: Sia Jee Heng <jee.heng.sia@intel.com>
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Date: Thu, 4 Feb 2021 09:42:55 +0800
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Subject: [PATCH] ASoC: codec: hdmi-codec: Support IEC958 encoded PCM
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format
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Existing hdmi-codec driver only support standard pcm format.
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Support of IEC958 encoded format pass from ALSA IEC958 plugin is needed
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so that the IEC958 encoded data can be streamed to the HDMI chip.
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Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
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Link: https://lore.kernel.org/r/20210204014258.10197-2-jee.heng.sia@intel.com
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Signed-off-by: Mark Brown <broonie@kernel.org>
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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---
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include/sound/hdmi-codec.h | 5 +++++
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sound/soc/codecs/hdmi-codec.c | 4 +++-
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2 files changed, 8 insertions(+), 1 deletion(-)
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--- a/include/sound/hdmi-codec.h
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+++ b/include/sound/hdmi-codec.h
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@@ -34,6 +34,11 @@ struct hdmi_codec_daifmt {
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unsigned int frame_clk_inv:1;
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unsigned int bit_clk_master:1;
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unsigned int frame_clk_master:1;
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+ /* bit_fmt could be standard PCM format or
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+ * IEC958 encoded format. ALSA IEC958 plugin will pass
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+ * IEC958_SUBFRAME format to the underneath driver.
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+ */
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+ snd_pcm_format_t bit_fmt;
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};
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/*
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--- a/sound/soc/codecs/hdmi-codec.c
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+++ b/sound/soc/codecs/hdmi-codec.c
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@@ -487,6 +487,7 @@ static int hdmi_codec_hw_params(struct s
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hp.sample_rate = params_rate(params);
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hp.channels = params_channels(params);
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+ cf->bit_fmt = params_format(params);
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return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
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cf, &hp);
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}
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@@ -615,7 +616,8 @@ static const struct snd_soc_dai_ops hdmi
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SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
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SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
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SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
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- SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
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+ SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE |\
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+ SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
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static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
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struct snd_soc_dai *dai)
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