diff options
| author | Takashi Iwai <tiwai@suse.de> | 2008-07-30 15:01:44 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2008-10-13 02:42:58 +0200 |
| commit | 176d5335fe66f379a339b0ab99cc7566e90ff1a9 (patch) | |
| tree | 00f294bebf1270f65fe527141d3e6c1f440bba36 /sound/pci/hda/hda_codec.c | |
| parent | 687cb98e893f492932abb3e92660d7d828bd44fb (diff) | |
ALSA: hda - Add infrastructure for dynamic stream allocation
Added the infrastructure for dynamic stream allocation on HD-audio.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_codec.c')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 74 |
1 files changed, 66 insertions, 8 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 6447754ae56..19b4530e3ba 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -2262,6 +2262,28 @@ static int __devinit set_pcm_default_values(struct hda_codec *codec, return 0; } +/* + * attach a new PCM stream + */ +static int __devinit +snd_hda_attach_pcm(struct hda_codec *codec, struct hda_pcm *pcm) +{ + struct hda_pcm_stream *info; + int stream, err; + + if (!pcm->name) + return -EINVAL; + for (stream = 0; stream < 2; stream++) { + info = &pcm->stream[stream]; + if (info->substreams) { + err = set_pcm_default_values(codec, info); + if (err < 0) + return err; + } + } + return codec->bus->ops.attach_pcm(codec, pcm); +} + /** * snd_hda_build_pcms - build PCM information * @bus: the BUS @@ -2290,10 +2312,24 @@ static int __devinit set_pcm_default_values(struct hda_codec *codec, */ int __devinit snd_hda_build_pcms(struct hda_bus *bus) { + static const char *dev_name[HDA_PCM_NTYPES] = { + "Audio", "SPDIF", "HDMI", "Modem" + }; + /* starting device index for each PCM type */ + static int dev_idx[HDA_PCM_NTYPES] = { + [HDA_PCM_TYPE_AUDIO] = 0, + [HDA_PCM_TYPE_SPDIF] = 1, + [HDA_PCM_TYPE_HDMI] = 3, + [HDA_PCM_TYPE_MODEM] = 6 + }; + /* normal audio device indices; not linear to keep compatibility */ + static int audio_idx[4] = { 0, 2, 4, 5 }; struct hda_codec *codec; + int num_devs[HDA_PCM_NTYPES]; + memset(num_devs, 0, sizeof(num_devs)); list_for_each_entry(codec, &bus->codec_list, list) { - unsigned int pcm, s; + unsigned int pcm; int err; if (!codec->patch_ops.build_pcms) continue; @@ -2301,15 +2337,37 @@ int __devinit snd_hda_build_pcms(struct hda_bus *bus) if (err < 0) return err; for (pcm = 0; pcm < codec->num_pcms; pcm++) { - for (s = 0; s < 2; s++) { - struct hda_pcm_stream *info; - info = &codec->pcm_info[pcm].stream[s]; - if (!info->substreams) + struct hda_pcm *cpcm = &codec->pcm_info[pcm]; + int type = cpcm->pcm_type; + switch (type) { + case HDA_PCM_TYPE_AUDIO: + if (num_devs[type] >= ARRAY_SIZE(audio_idx)) { + snd_printk(KERN_WARNING + "Too many audio devices\n"); + continue; + } + cpcm->device = audio_idx[num_devs[type]]; + break; + case HDA_PCM_TYPE_SPDIF: + case HDA_PCM_TYPE_HDMI: + case HDA_PCM_TYPE_MODEM: + if (num_devs[type]) { + snd_printk(KERN_WARNING + "%s already defined\n", + dev_name[type]); continue; - err = set_pcm_default_values(codec, info); - if (err < 0) - return err; + } + cpcm->device = dev_idx[type]; + break; + default: + snd_printk(KERN_WARNING + "Invalid PCM type %d\n", type); + continue; } + num_devs[type]++; + err = snd_hda_attach_pcm(codec, cpcm); + if (err < 0) + return err; } } return 0; |