diff options
Diffstat (limited to 'sound/drivers/dummy.c')
| -rw-r--r-- | sound/drivers/dummy.c | 106 |
1 files changed, 80 insertions, 26 deletions
diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c index 9c827b1..a276f7c 100644 --- a/sound/drivers/dummy.c +++ b/sound/drivers/dummy.c @@ -20,6 +20,8 @@ #include <sound/driver.h> #include <linux/init.h> +#include <linux/err.h> +#include <linux/platform_device.h> #include <linux/jiffies.h> #include <linux/slab.h> #include <linux/time.h> @@ -151,6 +153,7 @@ MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-16) for dummy driver."); struct snd_dummy { struct snd_card *card; + struct snd_pcm *pcm; spinlock_t mixer_lock; int mixer_volume[MIXER_ADDR_LAST+1][2]; int capture_source[MIXER_ADDR_LAST+1][2]; @@ -169,8 +172,6 @@ struct snd_dummy_pcm { struct snd_pcm_substream *substream; }; -static struct snd_card *snd_dummy_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR; - static inline void snd_card_dummy_pcm_timer_start(struct snd_dummy_pcm *dpcm) { @@ -190,15 +191,21 @@ static int snd_card_dummy_pcm_trigger(struct snd_pcm_substream *substream, int c int err = 0; spin_lock(&dpcm->lock); - if (cmd == SNDRV_PCM_TRIGGER_START) { + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: snd_card_dummy_pcm_timer_start(dpcm); - } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: snd_card_dummy_pcm_timer_stop(dpcm); - } else { + break; + default: err = -EINVAL; + break; } spin_unlock(&dpcm->lock); - return err; + return 0; } static int snd_card_dummy_pcm_prepare(struct snd_pcm_substream *substream) @@ -251,7 +258,7 @@ static snd_pcm_uframes_t snd_card_dummy_pcm_pointer(struct snd_pcm_substream *su static struct snd_pcm_hardware snd_card_dummy_playback = { .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_MMAP_VALID), + SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID), .formats = USE_FORMATS, .rates = USE_RATE, .rate_min = USE_RATE_MIN, @@ -269,7 +276,7 @@ static struct snd_pcm_hardware snd_card_dummy_playback = static struct snd_pcm_hardware snd_card_dummy_capture = { .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_MMAP_VALID), + SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID), .formats = USE_FORMATS, .rates = USE_RATE, .rate_min = USE_RATE_MIN, @@ -405,6 +412,7 @@ static int __init snd_card_dummy_pcm(struct snd_dummy *dummy, int device, int su if ((err = snd_pcm_new(dummy->card, "Dummy PCM", device, substreams, substreams, &pcm)) < 0) return err; + dummy->pcm = pcm; snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_dummy_playback_ops); snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_dummy_capture_ops); pcm->private_data = dummy; @@ -547,14 +555,13 @@ static int __init snd_card_dummy_new_mixer(struct snd_dummy *dummy) return 0; } -static int __init snd_card_dummy_probe(int dev) +static int __init snd_dummy_probe(struct platform_device *devptr) { struct snd_card *card; struct snd_dummy *dummy; int idx, err; + int dev = devptr->id; - if (!enable[dev]) - return -ENODEV; card = snd_card_new(index[dev], id[dev], THIS_MODULE, sizeof(struct snd_dummy)); if (card == NULL) @@ -575,11 +582,10 @@ static int __init snd_card_dummy_probe(int dev) strcpy(card->shortname, "Dummy"); sprintf(card->longname, "Dummy %i", dev + 1); - if ((err = snd_card_set_generic_dev(card)) < 0) - goto __nodev; + snd_card_set_dev(card, &devptr->dev); if ((err = snd_card_register(card)) == 0) { - snd_dummy_cards[dev] = card; + platform_set_drvdata(devptr, card); return 0; } __nodev: @@ -587,16 +593,62 @@ static int __init snd_card_dummy_probe(int dev) return err; } -static int __init alsa_card_dummy_init(void) +static int snd_dummy_remove(struct platform_device *devptr) +{ + snd_card_free(platform_get_drvdata(devptr)); + platform_set_drvdata(devptr, NULL); + return 0; +} + +#ifdef CONFIG_PM +static int snd_dummy_suspend(struct platform_device *pdev, pm_message_t state) { - int dev, cards; + struct snd_card *card = platform_get_drvdata(pdev); + struct snd_dummy *dummy = card->private_data; - for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) { - if (snd_card_dummy_probe(dev) < 0) { -#ifdef MODULE - printk(KERN_ERR "Dummy soundcard #%i not found or device busy\n", dev + 1); + snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); + snd_pcm_suspend_all(dummy->pcm); + return 0; +} + +static int snd_dummy_resume(struct platform_device *pdev) +{ + struct snd_card *card = platform_get_drvdata(pdev); + + snd_power_change_state(card, SNDRV_CTL_POWER_D0); + return 0; +} +#endif + +#define SND_DUMMY_DRIVER "snd_dummy" + +static struct platform_driver snd_dummy_driver = { + .probe = snd_dummy_probe, + .remove = snd_dummy_remove, +#ifdef CONFIG_PM + .suspend = snd_dummy_suspend, + .resume = snd_dummy_resume, #endif - break; + .driver = { + .name = SND_DUMMY_DRIVER + }, +}; + +static int __init alsa_card_dummy_init(void) +{ + int i, cards, err; + + if ((err = platform_driver_register(&snd_dummy_driver)) < 0) + return err; + + cards = 0; + for (i = 0; i < SNDRV_CARDS && enable[i]; i++) { + struct platform_device *device; + device = platform_device_register_simple(SND_DUMMY_DRIVER, + i, NULL, 0); + if (IS_ERR(device)) { + err = PTR_ERR(device); + goto errout; } cards++; } @@ -604,17 +656,19 @@ static int __init alsa_card_dummy_init(void) #ifdef MODULE printk(KERN_ERR "Dummy soundcard not found or device busy\n"); #endif - return -ENODEV; + err = -ENODEV; + goto errout; } return 0; + + errout: + platform_driver_unregister(&snd_dummy_driver); + return err; } static void __exit alsa_card_dummy_exit(void) { - int idx; - - for (idx = 0; idx < SNDRV_CARDS; idx++) - snd_card_free(snd_dummy_cards[idx]); + platform_driver_unregister(&snd_dummy_driver); } module_init(alsa_card_dummy_init) |