disable pwm7

hc

2023-11-22 f743a7adbd6e230d66a6206fa115b59fec2d88eb

 kernel/sound/soc/codecs/hdmi-codec.c
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@@ -14,6 +14,7 @@
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  */
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 #include <linux/module.h>
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 #include <linux/string.h>
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+#include <linux/extcon-provider.h>
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 #include <sound/core.h>
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 #include <sound/jack.h>
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 #include <sound/pcm.h>
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@@ -277,6 +278,11 @@
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 	  .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
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 };
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+static const unsigned int hdmi_extcon_cable[] = {
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+	EXTCON_DISP_HDMI_AUDIO,
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+	EXTCON_NONE,
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+};
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+
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 struct hdmi_codec_priv {
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 	struct hdmi_codec_pdata hcd;
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 	struct snd_soc_dai_driver *daidrv;
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@@ -288,6 +294,7 @@
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 	unsigned int chmap_idx;
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 	unsigned int mode;
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 	struct snd_soc_jack *jack;
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+	struct extcon_dev *edev;
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 	unsigned int jack_status;
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 };
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@@ -498,7 +505,8 @@
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 	WARN_ON(hcp->current_stream != substream);
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 	hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
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-	hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
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+	if (hcp->hcd.ops->audio_shutdown)
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+		hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
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 	mutex_lock(&hcp->current_stream_lock);
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 	hcp->current_stream = NULL;
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@@ -774,10 +782,48 @@
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 {
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 	struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
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-	if (plugged)
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+	if (plugged) {
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 		hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
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-	else
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+		extcon_set_state_sync(hcp->edev,
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+				      EXTCON_DISP_HDMI_AUDIO, true);
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+	} else {
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 		hdmi_codec_jack_report(hcp, 0);
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+		extcon_set_state_sync(hcp->edev,
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+				      EXTCON_DISP_HDMI_AUDIO, false);
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+	}
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+
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+	mutex_lock(&hcp->current_stream_lock);
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+	if (hcp->current_stream) {
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+		/*
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+		 * Workaround for HDMIIN and HDMIOUT plug-{in,out} when streaming.
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+		 *
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+		 * Actually, we should do stop stream both for HDMI_{OUT,IN} on
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+		 * plug-{out,in} event. but for better experience and depop stream,
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+		 * we optimize as follows:
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+		 *
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+		 * a) Do stop stream for HDMIIN on plug-out when streaming.
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+		 * because HDMIIN work as SLAVE mode, CLK lost after HDMI cable
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+		 * plugged out which will make stream stuck until ALSA timeout(10s).
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+		 * so, for better experience, we should stop stream at the moment.
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+		 *
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+		 * b) Do stop stream for HDMIOUT on plug-in when streaming.
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+		 * because HDMIOUT work as MASTER mode, there is no clk-issue like
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+		 * HDMIIN, but, on HDR situation, HDMI will be reconfigured which
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+		 * make HDMI audio configure lost, especially for NLPCM/HBR bitstream
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+		 * which require IEC937 packet alignment, so, for this situation,
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+		 * we stop stream to notify user to re-open and configure sound card
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+		 * and then go on streaming.
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+		 */
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+		int stream = hcp->current_stream->stream;
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+
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+		if (stream == SNDRV_PCM_STREAM_PLAYBACK && plugged)
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+			snd_pcm_stop(hcp->current_stream, SNDRV_PCM_STATE_SETUP);
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+		else if (stream == SNDRV_PCM_STREAM_CAPTURE && !plugged)
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+			snd_pcm_stop(hcp->current_stream, SNDRV_PCM_STATE_DISCONNECTED);
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+
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+		dev_dbg(dev, "stream[%d]: %s\n", stream, plugged ? "plug in" : "plug out");
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+	}
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+	mutex_unlock(&hcp->current_stream_lock);
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 }
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 static int hdmi_codec_set_jack(struct snd_soc_component *component,
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@@ -884,8 +930,7 @@
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 	}
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 	dai_count = hcd->i2s + hcd->spdif;
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-	if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
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-	    !hcd->ops->audio_shutdown) {
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+	if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params) {
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 		dev_err(dev, "%s: Invalid parameters\n", __func__);
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 		return -EINVAL;
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 	}
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@@ -916,6 +961,18 @@
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 	dev_set_drvdata(dev, hcp);
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+	hcp->edev = devm_extcon_dev_allocate(&pdev->dev, hdmi_extcon_cable);
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+	if (IS_ERR(hcp->edev)) {
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+		dev_err(&pdev->dev, "Failed to allocate extcon device\n");
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+		return -ENOMEM;
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+	}
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+
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+	ret = devm_extcon_dev_register(&pdev->dev, hcp->edev);
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+	if (ret < 0) {
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+		dev_err(&pdev->dev, "Failed to register extcon device\n");
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+		return ret;
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+	}
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+
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 	ret = devm_snd_soc_register_component(dev, &hdmi_driver, hcp->daidrv,
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 				     dai_count);
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 	if (ret) {