Commit ef46c7af authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: pcm: Embed struct device 



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.

Reviewed-by: default avatarJaroslav Kysela <perex@perex.cz>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 7b461600

include/sound/pcm.h

+1 −1
Original line number Diff line number Diff line
@@ -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)

sound/aoa/soundbus/i2sbus/pcm.c

+4 −1
Original line number Diff line number Diff line
@@ -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;

	}

sound/core/pcm.c

+15 −23
Original line number Diff line number Diff line
@@ -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(&register_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);

	}

sound/pci/hda/hda_controller.c

+2 −1
Original line number Diff line number Diff line
@@ -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;

}

sound/soc/intel/sst-mfld-platform-pcm.c

+0 −1
Original line number Diff line number Diff line
@@ -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);

}

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