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