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From: Tzung-Bi Shih <tzungbi@google.com>
To: broonie@kernel.org, robh+dt@kernel.org, narmstrong@baylibre.com
Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org,
	cychiang@google.com, jonas@kwiboo.se, allen.chen@ite.com.tw,
	jernej.skrabec@siol.net, dri-devel@lists.freedesktop.org,
	a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com,
	tzungbi@google.com, dgreid@google.com
Subject: [alsa-devel] [PATCH 1/6] ASoC: hdmi-codec: add PCM trigger operator
Date: Tue, 22 Oct 2019 19:45:00 +0800	[thread overview]
Message-ID: <20191022193301.1.I3039014cf259de5e4d6315fc05dff111591a0901@changeid> (raw)
In-Reply-To: <20191022114505.196852-1-tzungbi@google.com>

HDMI codec may be also interested in PCM triggers.  Add PCM trigger
operator.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
---
 include/sound/hdmi-codec.h    | 13 +++++++++++++
 sound/soc/codecs/hdmi-codec.c | 31 +++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
index 83b17682e01c..9de462ef170d 100644
--- a/include/sound/hdmi-codec.h
+++ b/include/sound/hdmi-codec.h
@@ -50,6 +50,13 @@ struct hdmi_codec_params {
 typedef void (*hdmi_codec_plugged_cb)(struct device *dev,
 				      bool plugged);
 
+enum {
+	HDMI_CODEC_TRIGGER_EVENT_STOP,
+	HDMI_CODEC_TRIGGER_EVENT_START,
+	HDMI_CODEC_TRIGGER_EVENT_SUSPEND,
+	HDMI_CODEC_TRIGGER_EVENT_RESUME,
+};
+
 struct hdmi_codec_pdata;
 struct hdmi_codec_ops {
 	/*
@@ -66,6 +73,12 @@ struct hdmi_codec_ops {
 			 struct hdmi_codec_daifmt *fmt,
 			 struct hdmi_codec_params *hparms);
 
+	/*
+	 * PCM trigger callback.
+	 * Optional
+	 */
+	int (*trigger)(struct device *dev, int event);
+
 	/*
 	 * Shuts down the audio stream.
 	 * Mandatory
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index b5fd8f08726e..1ba2fa26ba03 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -565,12 +565,42 @@ static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
 	return 0;
 }
 
+static int hdmi_codec_trigger(struct snd_pcm_substream *substream, int cmd,
+			      struct snd_soc_dai *dai)
+{
+	struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
+	int event;
+
+	if (!hcp->hcd.ops->trigger)
+		return 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_STOP:
+		event = HDMI_CODEC_TRIGGER_EVENT_STOP;
+		break;
+	case SNDRV_PCM_TRIGGER_START:
+		event = HDMI_CODEC_TRIGGER_EVENT_START;
+		break;
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		event = HDMI_CODEC_TRIGGER_EVENT_SUSPEND;
+		break;
+	case SNDRV_PCM_TRIGGER_RESUME:
+		event = HDMI_CODEC_TRIGGER_EVENT_RESUME;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return hcp->hcd.ops->trigger(dai->dev->parent, event);
+}
+
 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
 	.startup	= hdmi_codec_startup,
 	.shutdown	= hdmi_codec_shutdown,
 	.hw_params	= hdmi_codec_hw_params,
 	.set_fmt	= hdmi_codec_i2s_set_fmt,
 	.digital_mute	= hdmi_codec_digital_mute,
+	.trigger	= hdmi_codec_trigger,
 };
 
 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
@@ -578,6 +608,7 @@ static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
 	.shutdown	= hdmi_codec_shutdown,
 	.hw_params	= hdmi_codec_hw_params,
 	.digital_mute	= hdmi_codec_digital_mute,
+	.trigger	= hdmi_codec_trigger,
 };
 
 #define HDMI_RATES	(SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
-- 
2.23.0.866.gb869b98d4c-goog

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  reply	other threads:[~2019-10-22 11:48 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-22 11:44 [alsa-devel] [PATCH 0/6] ASoC: mediatek: mt8183: support DP audio Tzung-Bi Shih
2019-10-22 11:45 ` Tzung-Bi Shih [this message]
2022-11-24  5:52   ` [PATCH 1/6] ASoC: hdmi-codec: add PCM trigger operator Allen-KH Cheng (程冠勳)
2022-11-24  9:54     ` Tzung-Bi Shih
2019-10-22 11:45 ` [alsa-devel] [PATCH 2/6] drm: bridge: it6505: bridge to hdmi-codec Tzung-Bi Shih
2019-10-22 11:45 ` [alsa-devel] [PATCH 3/6] ASoC: dt-bindings: mt8183: add a property "mediatek, hdmi-codec" Tzung-Bi Shih
2019-10-29 16:57   ` Rob Herring
2019-10-22 11:45 ` [alsa-devel] [PATCH 4/6] ASoC: mediatek: mt8183: use hdmi-codec Tzung-Bi Shih
2019-10-22 11:45 ` [alsa-devel] [PATCH 5/6] drm: bridge: it6505: report connector status Tzung-Bi Shih
2019-10-22 11:45 ` [alsa-devel] [PATCH 6/6] ASoC: mediatek: mt8183: support HDMI jack reporting Tzung-Bi Shih

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