ALSA: x86: Prepare LPE audio ctls for multiple PCMs

In preparation for register a PCM device for each pipe adjust
link up the ctl elements with the corresponding PCM device.

Cc: Takashi Iwai <tiwai@suse.de>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170427160231.13337-10-ville.syrjala@linux.intel.com
Reviewed-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 19 insertions, 4 deletions

diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c
index c2b78621852e..69e10845633a 100644
--- a/sound/x86/intel_hdmi_audio.c
+++ b/sound/x86/intel_hdmi_audio.c
@@ -1609,11 +1609,16 @@ static void had_audio_wq(struct work_struct *work)
 /*
  * Jack interface
  */
-static int had_create_jack(struct snd_intelhad *ctx)
+static int had_create_jack(struct snd_intelhad *ctx,
+                           struct snd_pcm *pcm)
 {
+        char hdmi_str[32];
         int err;
 
-        err = snd_jack_new(ctx->card, "HDMI/DP", SND_JACK_AVOUT, &ctx->jack,
+        snprintf(hdmi_str, sizeof(hdmi_str),
+                 "HDMI/DP,pcm=%d", pcm->device);
+
+        err = snd_jack_new(ctx->card, hdmi_str, SND_JACK_AVOUT, &ctx->jack,
                            true, false);
         if (err < 0)
                 return err;
@@ -1793,7 +1798,17 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
 
         /* create controls */
         for (i = 0; i < ARRAY_SIZE(had_controls); i++) {
-                ret = snd_ctl_add(card, snd_ctl_new1(&had_controls[i], ctx));
+                struct snd_kcontrol *kctl;
+
+                kctl = snd_ctl_new1(&had_controls[i], ctx);
+                if (!kctl) {
+                        ret = -ENOMEM;
+                        goto err;
+                }
+
+                kctl->id.device = pcm->device;
+
+                ret = snd_ctl_add(card, kctl);
                 if (ret < 0)
                         goto err;
         }
@@ -1805,7 +1820,7 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
         if (ret < 0)
                 goto err;
 
-        ret = had_create_jack(ctx);
+        ret = had_create_jack(ctx, pcm);
         if (ret < 0)
                 goto err;