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ALSA: hda - build chmap kctl based on pcm in hdmi audio

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Build chmap kctl based on pcm. The first chmap kctl will be
mapped to the first pcm, and so on.

When a monitor is connected to a pin, the chmap kctl can
find the pin and the monitor through the pcm index.

Signed-off-by: Libin Yang <libin.yang@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Libin Yang 2016-02-03 10:48:34 +08:00 committed by Takashi Iwai
parent b09887f891
commit 022f344b41
1 changed files with 33 additions and 7 deletions
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40
sound/pci/hda/patch_hdmi.c
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@ -437,6 +437,20 @@ static int hinfo_to_pin_index(struct hda_codec *codec,
return -EINVAL;
}
static struct hdmi_spec_per_pin *pcm_idx_to_pin(struct hdmi_spec *spec,
int pcm_idx)
{
int i;
struct hdmi_spec_per_pin *per_pin;
for (i = 0; i < spec->num_pins; i++) {
per_pin = get_pin(spec, i);
if (per_pin->pcm_idx == pcm_idx)
return per_pin;
}
return NULL;
}
static int cvt_nid_to_cvt_index(struct hda_codec *codec, hda_nid_t cvt_nid)
{
struct hdmi_spec *spec = codec->spec;
@ -2398,10 +2412,16 @@ static int hdmi_chmap_ctl_get(struct snd_kcontrol *kcontrol,
struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
struct hda_codec *codec = info->private_data;
struct hdmi_spec *spec = codec->spec;
int pin_idx = kcontrol->private_value;
struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
int pcm_idx = kcontrol->private_value;
struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);
int i;
if (!per_pin) {
for (i = 0; i < spec->channels_max; i++)
ucontrol->value.integer.value[i] = 0;
return 0;
}
for (i = 0; i < ARRAY_SIZE(per_pin->chmap); i++)
ucontrol->value.integer.value[i] = per_pin->chmap[i];
return 0;
@ -2413,13 +2433,19 @@ static int hdmi_chmap_ctl_put(struct snd_kcontrol *kcontrol,
struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
struct hda_codec *codec = info->private_data;
struct hdmi_spec *spec = codec->spec;
int pin_idx = kcontrol->private_value;
struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
int pcm_idx = kcontrol->private_value;
struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);
unsigned int ctl_idx;
struct snd_pcm_substream *substream;
unsigned char chmap[8];
int i, err, ca, prepared = 0;
/* No monitor is connected in dyn_pcm_assign.
* It's invalid to setup the chmap
*/
if (!per_pin)
return 0;
ctl_idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
substream = snd_pcm_chmap_substream(info, ctl_idx);
if (!substream || !substream->runtime)
@ -2596,18 +2622,18 @@ static int generic_hdmi_build_controls(struct hda_codec *codec)
}
/* add channel maps */
for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
for (pcm_idx = 0; pcm_idx < spec->pcm_used; pcm_idx++) {
struct hda_pcm *pcm;
struct snd_pcm_chmap *chmap;
struct snd_kcontrol *kctl;
int i;
pcm = get_pcm_rec(spec, pin_idx);
pcm = get_pcm_rec(spec, pcm_idx);
if (!pcm || !pcm->pcm)
break;
err = snd_pcm_add_chmap_ctls(pcm->pcm,
SNDRV_PCM_STREAM_PLAYBACK,
NULL, 0, pin_idx, &chmap);
NULL, 0, pcm_idx, &chmap);
if (err < 0)
return err;
/* override handlers */