Like previous patches, at this time we embed the struct device into PCM object. However, this needs a bit more caution: struct snd_pcm doesn't own one device but two, for both playback and capture! Thus not struct snd_pcm but struct snd_pcm_str object contains the device.
Along with this change, pcm->dev field is dropped for avoiding confusion. It was meant to point to a non-standard parent. But, since now we can touch each struct device directly, we can manipulate the parent field easily there, too.
Signed-off-by: Takashi Iwai tiwai@suse.de --- include/sound/pcm.h | 2 +- sound/aoa/soundbus/i2sbus/pcm.c | 5 ++++- sound/core/pcm.c | 38 +++++++++++++-------------------- sound/pci/hda/hda_controller.c | 3 ++- sound/soc/intel/sst-mfld-platform-pcm.c | 1 - 5 files changed, 22 insertions(+), 27 deletions(-)
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index b429b73e875e..735bd0cc7347 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -449,6 +449,7 @@ struct snd_pcm_str { #endif #endif struct snd_kcontrol *chmap_kctl; /* channel-mapping controls */ + struct device dev; };
struct snd_pcm { @@ -465,7 +466,6 @@ struct snd_pcm { wait_queue_head_t open_wait; void *private_data; void (*private_free) (struct snd_pcm *pcm); - struct device *dev; /* actual hw device this belongs to */ bool internal; /* pcm is for internal use only */ bool nonatomic; /* whole PCM operations are in non-atomic context */ #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) diff --git a/sound/aoa/soundbus/i2sbus/pcm.c b/sound/aoa/soundbus/i2sbus/pcm.c index 7b74a4ba75f8..a02b7b8d3532 100644 --- a/sound/aoa/soundbus/i2sbus/pcm.c +++ b/sound/aoa/soundbus/i2sbus/pcm.c @@ -968,7 +968,6 @@ i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card, printk(KERN_DEBUG "i2sbus: failed to create pcm\n"); goto out_put_ci_module; } - dev->pcm->dev = &dev->ofdev.dev; }
/* ALSA yet again sucks. @@ -988,6 +987,8 @@ i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card, goto out_put_ci_module; snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK, &i2sbus_playback_ops); + dev->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].dev.parent = + &dev->ofdev.dev; i2sdev->out.created = 1; }
@@ -1003,6 +1004,8 @@ i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card, goto out_put_ci_module; snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE, &i2sbus_record_ops); + dev->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].dev.parent = + &dev->ofdev.dev; i2sdev->in.created = 1; }
diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 1b7c473720fa..4d5120f7a8ab 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -673,6 +673,8 @@ static inline int snd_pcm_substream_proc_init(struct snd_pcm_substream *substrea static inline int snd_pcm_substream_proc_done(struct snd_pcm_substream *substream) { return 0; } #endif /* CONFIG_SND_VERBOSE_PROCFS */
+static const struct attribute_group *pcm_dev_attr_groups[]; + /** * snd_pcm_new_stream - create a new PCM stream * @pcm: the pcm instance @@ -698,7 +700,15 @@ int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count) pstr->stream = stream; pstr->pcm = pcm; pstr->substream_count = substream_count; - if (substream_count > 0 && !pcm->internal) { + if (!substream_count) + return 0; + + snd_device_initialize(&pstr->dev, pcm->card); + pstr->dev.groups = pcm_dev_attr_groups; + dev_set_name(&pstr->dev, "pcmC%iD%i%c", pcm->card->number, pcm->device, + stream == SNDRV_PCM_STREAM_PLAYBACK ? 'p' : 'c'); + + if (!pcm->internal) { err = snd_pcm_stream_proc_init(pstr); if (err < 0) { pcm_err(pcm, "Error in snd_pcm_stream_proc_init\n"); @@ -868,6 +878,8 @@ static void snd_pcm_free_stream(struct snd_pcm_str * pstr) kfree(setup); } #endif + if (pstr->substream_count) + put_device(&pstr->dev); }
static int snd_pcm_free(struct snd_pcm *pcm) @@ -1069,9 +1081,7 @@ static int snd_pcm_dev_register(struct snd_device *device) int cidx, err; struct snd_pcm_substream *substream; struct snd_pcm_notify *notify; - char str[16]; struct snd_pcm *pcm; - struct device *dev;
if (snd_BUG_ON(!device || !device->device_data)) return -ENXIO; @@ -1088,42 +1098,24 @@ static int snd_pcm_dev_register(struct snd_device *device) continue; switch (cidx) { case SNDRV_PCM_STREAM_PLAYBACK: - sprintf(str, "pcmC%iD%ip", pcm->card->number, pcm->device); devtype = SNDRV_DEVICE_TYPE_PCM_PLAYBACK; break; case SNDRV_PCM_STREAM_CAPTURE: - sprintf(str, "pcmC%iD%ic", pcm->card->number, pcm->device); devtype = SNDRV_DEVICE_TYPE_PCM_CAPTURE; break; } - /* device pointer to use, pcm->dev takes precedence if - * it is assigned, otherwise fall back to card's device - * if possible */ - dev = pcm->dev; - if (!dev) - dev = snd_card_get_device_link(pcm->card); /* register pcm */ err = snd_register_device_for_dev(devtype, pcm->card, pcm->device, &snd_pcm_f_ops[cidx], - pcm, NULL, dev, str); + pcm, &pcm->streams[cidx].dev, + NULL, NULL); if (err < 0) { list_del(&pcm->list); mutex_unlock(®ister_mutex); return err; }
- dev = snd_get_device(devtype, pcm->card, pcm->device); - if (dev) { - err = sysfs_create_groups(&dev->kobj, - pcm_dev_attr_groups); - if (err < 0) - dev_warn(dev, - "pcm %d:%d: cannot create sysfs groups\n", - pcm->card->number, pcm->device); - put_device(dev); - } - for (substream = pcm->streams[cidx].substream; substream; substream = substream->next) snd_pcm_timer_init(substream); } diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c index 0cfc9c8c4b4e..712ec5ceba46 100644 --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -939,7 +939,8 @@ static int azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec, chip->card->dev, size, MAX_PREALLOC_SIZE); /* link to codec */ - pcm->dev = &codec->dev; + for (s = 0; s < 2; s++) + pcm->streams[s].dev.parent = &codec->dev; return 0; }
diff --git a/sound/soc/intel/sst-mfld-platform-pcm.c b/sound/soc/intel/sst-mfld-platform-pcm.c index a1a8d9d91539..2d80c4e12997 100644 --- a/sound/soc/intel/sst-mfld-platform-pcm.c +++ b/sound/soc/intel/sst-mfld-platform-pcm.c @@ -645,7 +645,6 @@ static struct snd_pcm_ops sst_platform_ops = {
static void sst_pcm_free(struct snd_pcm *pcm) { - dev_dbg(pcm->dev, "sst_pcm_free called\n"); snd_pcm_lib_preallocate_free_for_all(pcm); }