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>
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 9f316c1..7b0abf0 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1180,6 +1180,7 @@
return 0;
}
+static int azx_attach_pcm_stream(struct hda_codec *codec, struct hda_pcm *cpcm);
/*
* Codec initialization
@@ -1212,6 +1213,7 @@
bus_temp.pci = chip->pci;
bus_temp.ops.command = azx_send_cmd;
bus_temp.ops.get_response = azx_get_response;
+ bus_temp.ops.attach_pcm = azx_attach_pcm_stream;
#ifdef CONFIG_SND_HDA_POWER_SAVE
bus_temp.ops.pm_notify = azx_power_notify;
#endif
@@ -1718,111 +1720,58 @@
static void azx_pcm_free(struct snd_pcm *pcm)
{
- kfree(pcm->private_data);
+ struct azx_pcm *apcm = pcm->private_data;
+ if (apcm) {
+ apcm->chip->pcm[pcm->device] = NULL;
+ kfree(apcm);
+ }
}
-static int __devinit create_codec_pcm(struct azx *chip, struct hda_codec *codec,
- struct hda_pcm *cpcm)
+static int
+azx_attach_pcm_stream(struct hda_codec *codec, struct hda_pcm *cpcm)
{
- int err;
+ struct azx *chip = codec->bus->private_data;
struct snd_pcm *pcm;
struct azx_pcm *apcm;
+ int pcm_dev = cpcm->device;
+ int s, err;
- /* if no substreams are defined for both playback and capture,
- * it's just a placeholder. ignore it.
- */
- if (!cpcm->stream[0].substreams && !cpcm->stream[1].substreams)
- return 0;
-
- if (snd_BUG_ON(!cpcm->name))
+ if (pcm_dev >= AZX_MAX_PCMS) {
+ snd_printk(KERN_ERR SFX "Invalid PCM device number %d\n",
+ pcm_dev);
return -EINVAL;
-
- err = snd_pcm_new(chip->card, cpcm->name, cpcm->device,
- cpcm->stream[0].substreams,
- cpcm->stream[1].substreams,
+ }
+ if (chip->pcm[pcm_dev]) {
+ snd_printk(KERN_ERR SFX "PCM %d already exists\n", pcm_dev);
+ return -EBUSY;
+ }
+ err = snd_pcm_new(chip->card, cpcm->name, pcm_dev,
+ cpcm->stream[SNDRV_PCM_STREAM_PLAYBACK].substreams,
+ cpcm->stream[SNDRV_PCM_STREAM_CAPTURE].substreams,
&pcm);
if (err < 0)
return err;
strcpy(pcm->name, cpcm->name);
- apcm = kmalloc(sizeof(*apcm), GFP_KERNEL);
+ apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
if (apcm == NULL)
return -ENOMEM;
apcm->chip = chip;
apcm->codec = codec;
- apcm->hinfo[0] = &cpcm->stream[0];
- apcm->hinfo[1] = &cpcm->stream[1];
pcm->private_data = apcm;
pcm->private_free = azx_pcm_free;
- if (cpcm->stream[0].substreams)
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &azx_pcm_ops);
- if (cpcm->stream[1].substreams)
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &azx_pcm_ops);
+ if (cpcm->pcm_type == HDA_PCM_TYPE_MODEM)
+ pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
+ chip->pcm[pcm_dev] = pcm;
+ cpcm->pcm = pcm;
+ for (s = 0; s < 2; s++) {
+ apcm->hinfo[s] = &cpcm->stream[s];
+ if (cpcm->stream[s].substreams)
+ snd_pcm_set_ops(pcm, s, &azx_pcm_ops);
+ }
+ /* buffer pre-allocation */
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
snd_dma_pci_data(chip->pci),
1024 * 64, 32 * 1024 * 1024);
- chip->pcm[cpcm->device] = pcm;
- return 0;
-}
-
-static int __devinit azx_pcm_create(struct azx *chip)
-{
- 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 c, err;
- int num_devs[HDA_PCM_NTYPES];
-
- err = snd_hda_build_pcms(chip->bus);
- if (err < 0)
- return err;
-
- /* create audio PCMs */
- memset(num_devs, 0, sizeof(num_devs));
- list_for_each_entry(codec, &chip->bus->codec_list, list) {
- for (c = 0; c < codec->num_pcms; c++) {
- struct hda_pcm *cpcm = &codec->pcm_info[c];
- 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;
- }
- cpcm->device = dev_idx[type];
- break;
- default:
- snd_printk(KERN_WARNING
- "Invalid PCM type %d\n", type);
- continue;
- }
- num_devs[type]++;
- err = create_codec_pcm(chip, codec, cpcm);
- if (err < 0)
- return err;
- }
- }
return 0;
}
@@ -2324,7 +2273,7 @@
}
/* create PCM streams */
- err = azx_pcm_create(chip);
+ err = snd_hda_build_pcms(chip->bus);
if (err < 0) {
snd_card_free(card);
return err;