ASoC: hdmi-codec: merge .digital_mute() into .mute_stream()

snd_soc_dai_digital_mute() is internally using both
mute_stream() (1) or digital_mute() (2), but the difference between
these 2 are only handling direction.
We can merge digital_mute() into mute_stream

int snd_soc_dai_digital_mute(xxx, int direction)
{
...
else if (dai->driver->ops->mute_stream)
(1) return dai->driver->ops->mute_stream(xxx, direction);
else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
dai->driver->ops->digital_mute)
(2) return dai->driver->ops->digital_mute(xxx);
...
}

For hdmi-codec, we need to update struct hdmi_codec_ops,
and all its users in the same time.

Signed-off-by: Kuninori Morimoto <[e-mail]>
Reviewed-by: Peter Ujfalusi <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/gpu/drm/bridge/sii902x.c

···
 	clk_disable_unprepare(sii902x->audio.mclk);
 }
 
-static int sii902x_audio_digital_mute(struct device *dev,
-				      void *data, bool enable)
+static int sii902x_audio_mute(struct device *dev, void *data,
+			      bool enable, int direction)
 {
 	struct sii902x *sii902x = dev_get_drvdata(dev);
 
···
 static const struct hdmi_codec_ops sii902x_audio_codec_ops = {
 	.hw_params = sii902x_audio_hw_params,
 	.audio_shutdown = sii902x_audio_shutdown,
-	.digital_mute = sii902x_audio_digital_mute,
+	.mute_stream = sii902x_audio_mute,
 	.get_eld = sii902x_audio_get_eld,
 	.get_dai_id = sii902x_audio_get_dai_id,
+	.no_capture_mute = 1,
 };
 
 static int sii902x_audio_codec_init(struct sii902x *sii902x,

drivers/gpu/drm/exynos/exynos_hdmi.c

···
 	return 0;
 }
 
-static int hdmi_audio_digital_mute(struct device *dev, void *data, bool mute)
+static int hdmi_audio_mute(struct device *dev, void *data,
+			   bool mute, int direction)
 {
 	struct hdmi_context *hdata = dev_get_drvdata(dev);
 
···
 static const struct hdmi_codec_ops audio_codec_ops = {
 	.hw_params = hdmi_audio_hw_params,
 	.audio_shutdown = hdmi_audio_shutdown,
-	.digital_mute = hdmi_audio_digital_mute,
+	.mute_stream = hdmi_audio_mute,
 	.get_eld = hdmi_audio_get_eld,
+	.no_capture_mute = 1,
 };
 
 static int hdmi_register_audio_device(struct hdmi_context *hdata)

drivers/gpu/drm/i2c/tda998x_drv.c

···
 	mutex_unlock(&priv->audio_mutex);
 }
 
-static int tda998x_audio_digital_mute(struct device *dev, void *data,
-				      bool enable)
+static int tda998x_audio_mute_stream(struct device *dev, void *data,
+				     bool enable, int direction)
 {
 	struct tda998x_priv *priv = dev_get_drvdata(dev);
 
···
 static const struct hdmi_codec_ops audio_codec_ops = {
 	.hw_params = tda998x_audio_hw_params,
 	.audio_shutdown = tda998x_audio_shutdown,
-	.digital_mute = tda998x_audio_digital_mute,
+	.mute_stream = tda998x_audio_mute_stream,
 	.get_eld = tda998x_audio_get_eld,
+	.no_capture_mute = 1,
 };
 
 static int tda998x_audio_codec_init(struct tda998x_priv *priv,

drivers/gpu/drm/mediatek/mtk_hdmi.c

···
 }
 
 static int
-mtk_hdmi_audio_digital_mute(struct device *dev, void *data, bool enable)
+mtk_hdmi_audio_mute(struct device *dev, void *data,
+		    bool enable, int direction)
 {
 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
 
···
 	.hw_params = mtk_hdmi_audio_hw_params,
 	.audio_startup = mtk_hdmi_audio_startup,
 	.audio_shutdown = mtk_hdmi_audio_shutdown,
-	.digital_mute = mtk_hdmi_audio_digital_mute,
+	.mute_stream = mtk_hdmi_audio_mute,
 	.get_eld = mtk_hdmi_audio_get_eld,
 	.hook_plugged_cb = mtk_hdmi_audio_hook_plugged_cb,
+	.no_capture_mute = 1,
 };
 
 static int mtk_hdmi_register_audio_driver(struct device *dev)

drivers/gpu/drm/rockchip/cdn-dp-core.c

···
 	mutex_unlock(&dp->lock);
 }
 
-static int cdn_dp_audio_digital_mute(struct device *dev, void *data,
-				     bool enable)
+static int cdn_dp_audio_mute_stream(struct device *dev, void *data,
+				    bool enable, int direction)
 {
 	struct cdn_dp_device *dp = dev_get_drvdata(dev);
 	int ret;
···
 static const struct hdmi_codec_ops audio_codec_ops = {
 	.hw_params = cdn_dp_audio_hw_params,
 	.audio_shutdown = cdn_dp_audio_shutdown,
-	.digital_mute = cdn_dp_audio_digital_mute,
+	.mute_stream = cdn_dp_audio_mute_stream,
 	.get_eld = cdn_dp_audio_get_eld,
+	.no_capture_mute = 1,
 };
 
 static int cdn_dp_audio_codec_init(struct cdn_dp_device *dp,

drivers/gpu/drm/sti/sti_hdmi.c

···
 	return 0;
 }
 
-static int hdmi_audio_digital_mute(struct device *dev, void *data, bool enable)
+static int hdmi_audio_mute(struct device *dev, void *data,
+			   bool enable, int direction)
 {
 	struct sti_hdmi *hdmi = dev_get_drvdata(dev);
 
···
 static const struct hdmi_codec_ops audio_codec_ops = {
 	.hw_params = hdmi_audio_hw_params,
 	.audio_shutdown = hdmi_audio_shutdown,
-	.digital_mute = hdmi_audio_digital_mute,
+	.mute_stream = hdmi_audio_mute,
 	.get_eld = hdmi_audio_get_eld,
+	.no_capture_mute = 1,
 };
 
 static int sti_hdmi_register_audio_driver(struct device *dev,

drivers/gpu/drm/zte/zx_hdmi.c

···
 	return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_AUDIO);
 }
 
-static int zx_hdmi_audio_digital_mute(struct device *dev, void *data,
-				      bool enable)
+static int zx_hdmi_audio_mute(struct device *dev, void *data,
+			      bool enable, int direction)
 {
 	struct zx_hdmi *hdmi = dev_get_drvdata(dev);
 
···
 	.audio_startup = zx_hdmi_audio_startup,
 	.hw_params = zx_hdmi_audio_hw_params,
 	.audio_shutdown = zx_hdmi_audio_shutdown,
-	.digital_mute = zx_hdmi_audio_digital_mute,
+	.mute_stream = zx_hdmi_audio_mute,
 	.get_eld = zx_hdmi_audio_get_eld,
+	.no_capture_mute = 1,
 };
 
 static struct hdmi_codec_pdata zx_hdmi_codec_pdata = {

include/sound/hdmi-codec.h

···
 	 * Mute/unmute HDMI audio stream.
 	 * Optional
 	 */
-	int (*digital_mute)(struct device *dev, void *data, bool enable);
+	int (*mute_stream)(struct device *dev, void *data,
+			   bool enable, int direction);
 
 	/*
 	 * Provides EDID-Like-Data from connected HDMI device.
···
 	int (*hook_plugged_cb)(struct device *dev, void *data,
 			       hdmi_codec_plugged_cb fn,
 			       struct device *codec_dev);
+
+	/* bit field */
+	unsigned int no_capture_mute:1;
 };
 
 /* HDMI codec initalization data */

sound/soc/codecs/hdmi-codec.c

···
 	return 0;
 }
 
-static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
+static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
 {
 	struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
 
-	if (hcp->hcd.ops->digital_mute)
-		return hcp->hcd.ops->digital_mute(dai->dev->parent,
-						  hcp->hcd.data, mute);
+	/*
+	 * ignore if direction was CAPTURE
+	 * and it had .no_capture_mute flag
+	 * see
+	 *	snd_soc_dai_digital_mute()
+	 */
+	if (hcp->hcd.ops->mute_stream &&
+	    (direction == SNDRV_PCM_STREAM_PLAYBACK ||
+	     !hcp->hcd.ops->no_capture_mute))
+		return hcp->hcd.ops->mute_stream(dai->dev->parent,
+						 hcp->hcd.data,
+						 mute, direction);
 
 	return -ENOTSUPP;
 }
···
 	.shutdown	= hdmi_codec_shutdown,
 	.hw_params	= hdmi_codec_hw_params,
 	.set_fmt	= hdmi_codec_i2s_set_fmt,
-	.digital_mute	= hdmi_codec_digital_mute,
+	.mute_stream	= hdmi_codec_mute,
 };
 
 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
 	.startup	= hdmi_codec_startup,
 	.shutdown	= hdmi_codec_shutdown,
 	.hw_params	= hdmi_codec_hw_params,
-	.digital_mute	= hdmi_codec_digital_mute,
+	.mute_stream	= hdmi_codec_mute,
 };
 
 #define HDMI_RATES	(SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\