[RFC PATCH 04/17] ASoC: pcm: Honor subformat when configuring runtime

[Cezary Rojewski <cezary.rojewski@xxxxxxxxx>]

Subformat options are ignored when setting up hardware parameters and
assigning PCM stream capabilities. Account for them to allow for
granular format selection.

Signed-off-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
---
 include/sound/soc.h |  1 +
 sound/soc/soc-pcm.c | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 755907fe82b4..cb74295ab020 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -619,6 +619,7 @@ enum snd_soc_trigger_order {
 struct snd_soc_pcm_stream {
 	const char *stream_name;
 	u64 formats;			/* SNDRV_PCM_FMTBIT_* */
+	u64 subformats;			/* SNDRV_PCM_SUBFMTBIT_* */
 	unsigned int rates;		/* SNDRV_PCM_RATE_* */
 	unsigned int rate_min;		/* min rate */
 	unsigned int rate_max;		/* max rate */
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index dc5f41879cc0..80118c5cb194 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -525,6 +525,7 @@ static void soc_pcm_hw_init(struct snd_pcm_hardware *hw)
 	hw->channels_min	= 0;
 	hw->channels_max	= UINT_MAX;
 	hw->formats		= ULLONG_MAX;
+	hw->subformats		= ULLONG_MAX;
 }
 
 static void soc_pcm_hw_update_rate(struct snd_pcm_hardware *hw,
@@ -553,6 +554,12 @@ static void soc_pcm_hw_update_format(struct snd_pcm_hardware *hw,
 	hw->formats &= p->formats;
 }
 
+static void soc_pcm_hw_update_subformat(struct snd_pcm_hardware *hw,
+					struct snd_soc_pcm_stream *p)
+{
+	hw->subformats &= p->subformats;
+}
+
 /**
  * snd_soc_runtime_calc_hw() - Calculate hw limits for a PCM stream
  * @rtd: ASoC PCM runtime
@@ -591,6 +598,7 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd,
 		soc_pcm_hw_update_chan(hw, cpu_stream);
 		soc_pcm_hw_update_rate(hw, cpu_stream);
 		soc_pcm_hw_update_format(hw, cpu_stream);
+		soc_pcm_hw_update_subformat(hw, cpu_stream);
 	}
 	cpu_chan_min = hw->channels_min;
 	cpu_chan_max = hw->channels_max;
@@ -612,6 +620,7 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd,
 		soc_pcm_hw_update_chan(hw, codec_stream);
 		soc_pcm_hw_update_rate(hw, codec_stream);
 		soc_pcm_hw_update_format(hw, codec_stream);
+		soc_pcm_hw_update_subformat(hw, codec_stream);
 	}
 
 	/* Verify both a valid CPU DAI and a valid CODEC DAI were found */
@@ -636,6 +645,7 @@ static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_hardware *hw = &substream->runtime->hw;
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	u64 subformats = hw->subformats;
 	u64 formats = hw->formats;
 
 	/*
@@ -647,6 +657,8 @@ static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
 
 	if (formats)
 		hw->formats &= formats;
+	if (subformats)
+		hw->subformats &= subformats;
 }
 
 static int soc_pcm_components_open(struct snd_pcm_substream *substream)
@@ -1675,6 +1687,7 @@ static void dpcm_runtime_setup_fe(struct snd_pcm_substream *substream)
 	struct snd_pcm_hardware *hw = &runtime->hw;
 	struct snd_soc_dai *dai;
 	int stream = substream->stream;
+	u64 subformats = hw->subformats;
 	u64 formats = hw->formats;
 	int i;
 
@@ -1682,6 +1695,8 @@ static void dpcm_runtime_setup_fe(struct snd_pcm_substream *substream)
 
 	if (formats)
 		hw->formats &= formats;
+	if (subformats)
+		hw->subformats &= subformats;
 
 	for_each_rtd_cpu_dais(fe, i, dai) {
 		struct snd_soc_pcm_stream *cpu_stream;
@@ -1698,6 +1713,7 @@ static void dpcm_runtime_setup_fe(struct snd_pcm_substream *substream)
 		soc_pcm_hw_update_rate(hw, cpu_stream);
 		soc_pcm_hw_update_chan(hw, cpu_stream);
 		soc_pcm_hw_update_format(hw, cpu_stream);
+		soc_pcm_hw_update_subformat(hw, cpu_stream);
 	}
 
 }
@@ -1735,6 +1751,7 @@ static void dpcm_runtime_setup_be_format(struct snd_pcm_substream *substream)
 			codec_stream = snd_soc_dai_get_pcm_stream(dai, stream);
 
 			soc_pcm_hw_update_format(hw, codec_stream);
+			soc_pcm_hw_update_subformat(hw, codec_stream);
 		}
 	}
 }
-- 
2.25.1