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[PATCH 0/2] ASoC: hdmi-codec: Allow driver to restrict sample size

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  [PATCH 0/2] ASoC: hdmi-codec: Allow driver to restrict sample size srinivas.kandagatla@linaro.org - 2017-07-17 16:10 +0200
    [PATCH 1/2] ASoC: hdmi-codec: Allow drivers to restrict sample sizes. srinivas.kandagatla@linaro.org - 2017-07-17 16:10 +0200
    [PATCH 2/2] drm/bridge: adv7511: restrict audio sample sizes srinivas.kandagatla@linaro.org - 2017-07-17 16:10 +0200

#1689078 — [PATCH 0/2] ASoC: hdmi-codec: Allow driver to restrict sample size

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

This patch adds option to allow hdmi-codec drivers to restrict
the audio sample size based on the values that are suppored in hardware.

First patch is adding that formats option to hdmi_codec_pdata and
second patch is a fix in adv7511 codec driver which only supports
16 and 24 bit samples.

Srinivas Kandagatla (2):
  ASoC: hdmi-codec: Allow drivers to restrict sample sizes.
  drm/bridge: adv7511: restrict audio sample sizes

 drivers/gpu/drm/bridge/adv7511/adv7511_audio.c | 2 ++
 include/sound/hdmi-codec.h                     | 1 +
 sound/soc/codecs/hdmi-codec.c                  | 3 +++
 3 files changed, 6 insertions(+)

-- 
2.11.0

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#1689081 — [PATCH 1/2] ASoC: hdmi-codec: Allow drivers to restrict sample sizes.

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

Currently hdmi client drivers does have means to limit the
sample sizes that it can only support. Having formats parameter
option would solve this.

This issue was noticed on DB410c board when adv7511 hdmi codec driver
failed to play a 32 bits audio samples, as it does not support them.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 include/sound/hdmi-codec.h    | 1 +
 sound/soc/codecs/hdmi-codec.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
index 9483c55f871b..89fc4cce5785 100644
--- a/include/sound/hdmi-codec.h
+++ b/include/sound/hdmi-codec.h
@@ -104,6 +104,7 @@ struct hdmi_codec_pdata {
 	uint i2s:1;
 	uint spdif:1;
 	int max_i2s_channels;
+	u64 formats;
 	void *data;
 };
 
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index 22ed0dc88f0a..1ece73f4be92 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -780,6 +780,9 @@ static int hdmi_codec_probe(struct platform_device *pdev)
 		hcp->daidrv[i] = hdmi_i2s_dai;
 		hcp->daidrv[i].playback.channels_max =
 			hcd->max_i2s_channels;
+
+		if (hcd->formats)
+			hcp->daidrv[i].playback.formats = hcd->formats;
 		i++;
 	}
 
-- 
2.11.0

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#1689084 — [PATCH 2/2] drm/bridge: adv7511: restrict audio sample sizes

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

ADV7533 only supports audio samples word width from 16-24 bits.
This patch restricts the audio sample sizes to the supported ones,
so that sound card does not report wrong list of supported hwparms.

Without this patch aplay would fail when playing a 32 bit audio.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/gpu/drm/bridge/adv7511/adv7511_audio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
index 67469c26bae8..d01d0aa0eef7 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
@@ -214,6 +214,8 @@ static struct hdmi_codec_pdata codec_data = {
 	.ops = &adv7511_codec_ops,
 	.max_i2s_channels = 2,
 	.i2s = 1,
+	.formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
+		    SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE),
 };
 
 int adv7511_audio_init(struct device *dev, struct adv7511 *adv7511)
-- 
2.11.0

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