ALSA: x86: Implement jack control

This patch implements a jack interface for notifying HDMI/DP
connection.  PA listens to this, so it can handle the monitor
connection more gracefully.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c
index 9889cdf..a30ca03 100644 (file)
--- a/sound/x86/intel_hdmi_audio.c
+++ b/sound/x86/intel_hdmi_audio.c
@@ -37,6 +37,7 @@
 #include <sound/pcm_params.h>
 #include <sound/initval.h>
 #include <sound/control.h>
+#include <sound/jack.h>
 #include <drm/drm_edid.h>
 #include <drm/intel_lpe_audio.h>
 #include "intel_hdmi_audio.h"
@@ -1382,6 +1383,8 @@ static void had_process_hot_plug(struct snd_intelhad *intelhaddata)
        }
 
        had_build_channel_allocation_map(intelhaddata);
+
+       snd_jack_report(intelhaddata->jack, SND_JACK_AVOUT);
 }
 
 /* process hot unplug, called from wq with mutex locked */
@@ -1414,6 +1417,7 @@ static void had_process_hot_unplug(struct snd_intelhad *intelhaddata)
                snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP);
 
  out:
+       snd_jack_report(intelhaddata->jack, 0);
        if (substream)
                had_substream_put(intelhaddata);
        kfree(intelhaddata->chmap->chmap);
@@ -1609,6 +1613,21 @@ static void had_audio_wq(struct work_struct *work)
 }
 
 /*
+ * Jack interface
+ */
+static int had_create_jack(struct snd_intelhad *ctx)
+{
+       int err;
+
+       err = snd_jack_new(ctx->card, "HDMI/DP", SND_JACK_AVOUT, &ctx->jack,
+                          true, false);
+       if (err < 0)
+               return err;
+       ctx->jack->private_data = ctx;
+       return 0;
+}
+
+/*
  * PM callbacks
  */
 
@@ -1780,6 +1799,10 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
        if (ret < 0)
                goto err;
 
+       ret = had_create_jack(ctx);
+       if (ret < 0)
+               goto err;
+
        ret = snd_card_register(card);
        if (ret)
                goto err;

diff --git a/sound/x86/intel_hdmi_audio.h b/sound/x86/intel_hdmi_audio.h
index d6ba90f..2d3e389 100644 (file)
--- a/sound/x86/intel_hdmi_audio.h
+++ b/sound/x86/intel_hdmi_audio.h
@@ -130,6 +130,7 @@ struct snd_intelhad {
        struct work_struct hdmi_audio_wq;
        struct mutex mutex; /* for protecting chmap and eld */
        bool need_reset;
+       struct snd_jack *jack;
 };
 
 #endif /* _INTEL_HDMI_AUDIO_ */