diff options
Diffstat (limited to 'sound/core/pcm.c')
-rw-r--r-- | sound/core/pcm.c | 454 |
1 files changed, 254 insertions, 200 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 184e74b75ba9..28ca61eb0b0d 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -33,23 +33,33 @@ MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Abramo Bagnara <abramo@alsa-proj MODULE_DESCRIPTION("Midlevel PCM code for ALSA."); MODULE_LICENSE("GPL"); -snd_pcm_t *snd_pcm_devices[SNDRV_CARDS * SNDRV_PCM_DEVICES]; +static LIST_HEAD(snd_pcm_devices); static LIST_HEAD(snd_pcm_notify_list); static DECLARE_MUTEX(register_mutex); -static int snd_pcm_free(snd_pcm_t *pcm); -static int snd_pcm_dev_free(snd_device_t *device); -static int snd_pcm_dev_register(snd_device_t *device); -static int snd_pcm_dev_disconnect(snd_device_t *device); -static int snd_pcm_dev_unregister(snd_device_t *device); +static int snd_pcm_free(struct snd_pcm *pcm); +static int snd_pcm_dev_free(struct snd_device *device); +static int snd_pcm_dev_register(struct snd_device *device); +static int snd_pcm_dev_disconnect(struct snd_device *device); +static int snd_pcm_dev_unregister(struct snd_device *device); -static int snd_pcm_control_ioctl(snd_card_t * card, - snd_ctl_file_t * control, - unsigned int cmd, unsigned long arg) +static struct snd_pcm *snd_pcm_search(struct snd_card *card, int device) { - unsigned int tmp; + struct list_head *p; + struct snd_pcm *pcm; + + list_for_each(p, &snd_pcm_devices) { + pcm = list_entry(p, struct snd_pcm, list); + if (pcm->card == card && pcm->device == device) + return pcm; + } + return NULL; +} - tmp = card->number * SNDRV_PCM_DEVICES; +static int snd_pcm_control_ioctl(struct snd_card *card, + struct snd_ctl_file *control, + unsigned int cmd, unsigned long arg) +{ switch (cmd) { case SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE: { @@ -57,51 +67,66 @@ static int snd_pcm_control_ioctl(snd_card_t * card, if (get_user(device, (int __user *)arg)) return -EFAULT; + down(®ister_mutex); device = device < 0 ? 0 : device + 1; while (device < SNDRV_PCM_DEVICES) { - if (snd_pcm_devices[tmp + device]) + if (snd_pcm_search(card, device)) break; device++; } if (device == SNDRV_PCM_DEVICES) device = -1; + up(®ister_mutex); if (put_user(device, (int __user *)arg)) return -EFAULT; return 0; } case SNDRV_CTL_IOCTL_PCM_INFO: { - snd_pcm_info_t __user *info; + struct snd_pcm_info __user *info; unsigned int device, subdevice; - snd_pcm_stream_t stream; - snd_pcm_t *pcm; - snd_pcm_str_t *pstr; - snd_pcm_substream_t *substream; - info = (snd_pcm_info_t __user *)arg; + int stream; + struct snd_pcm *pcm; + struct snd_pcm_str *pstr; + struct snd_pcm_substream *substream; + int err; + + info = (struct snd_pcm_info __user *)arg; if (get_user(device, &info->device)) return -EFAULT; - if (device >= SNDRV_PCM_DEVICES) - return -ENXIO; - pcm = snd_pcm_devices[tmp + device]; - if (pcm == NULL) - return -ENXIO; if (get_user(stream, &info->stream)) return -EFAULT; if (stream < 0 || stream > 1) return -EINVAL; - pstr = &pcm->streams[stream]; - if (pstr->substream_count == 0) - return -ENOENT; if (get_user(subdevice, &info->subdevice)) return -EFAULT; - if (subdevice >= pstr->substream_count) - return -ENXIO; - for (substream = pstr->substream; substream; substream = substream->next) + down(®ister_mutex); + pcm = snd_pcm_search(card, device); + if (pcm == NULL) { + err = -ENXIO; + goto _error; + } + pstr = &pcm->streams[stream]; + if (pstr->substream_count == 0) { + err = -ENOENT; + goto _error; + } + if (subdevice >= pstr->substream_count) { + err = -ENXIO; + goto _error; + } + for (substream = pstr->substream; substream; + substream = substream->next) if (substream->number == (int)subdevice) break; - if (substream == NULL) - return -ENXIO; - return snd_pcm_info_user(substream, info); + if (substream == NULL) { + err = -ENXIO; + goto _error; + } + err = snd_pcm_info_user(substream, info); + _error: + up(®ister_mutex); + return err; } case SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE: { @@ -126,30 +151,6 @@ static int snd_pcm_control_ioctl(snd_card_t * card, #define FORMAT(v) [SNDRV_PCM_FORMAT_##v] = #v #define SUBFORMAT(v) [SNDRV_PCM_SUBFORMAT_##v] = #v -static char *snd_pcm_stream_names[] = { - STREAM(PLAYBACK), - STREAM(CAPTURE), -}; - -static char *snd_pcm_state_names[] = { - STATE(OPEN), - STATE(SETUP), - STATE(PREPARED), - STATE(RUNNING), - STATE(XRUN), - STATE(DRAINING), - STATE(PAUSED), - STATE(SUSPENDED), -}; - -static char *snd_pcm_access_names[] = { - ACCESS(MMAP_INTERLEAVED), - ACCESS(MMAP_NONINTERLEAVED), - ACCESS(MMAP_COMPLEX), - ACCESS(RW_INTERLEAVED), - ACCESS(RW_NONINTERLEAVED), -}; - static char *snd_pcm_format_names[] = { FORMAT(S8), FORMAT(U8), @@ -191,6 +192,36 @@ static char *snd_pcm_format_names[] = { FORMAT(U18_3BE), }; +const char *snd_pcm_format_name(snd_pcm_format_t format) +{ + return snd_pcm_format_names[format]; +} + +#ifdef CONFIG_PROC_FS +static char *snd_pcm_stream_names[] = { + STREAM(PLAYBACK), + STREAM(CAPTURE), +}; + +static char *snd_pcm_state_names[] = { + STATE(OPEN), + STATE(SETUP), + STATE(PREPARED), + STATE(RUNNING), + STATE(XRUN), + STATE(DRAINING), + STATE(PAUSED), + STATE(SUSPENDED), +}; + +static char *snd_pcm_access_names[] = { + ACCESS(MMAP_INTERLEAVED), + ACCESS(MMAP_NONINTERLEAVED), + ACCESS(MMAP_COMPLEX), + ACCESS(RW_INTERLEAVED), + ACCESS(RW_NONINTERLEAVED), +}; + static char *snd_pcm_subformat_names[] = { SUBFORMAT(STD), }; @@ -200,7 +231,7 @@ static char *snd_pcm_tstamp_mode_names[] = { TSTAMP(MMAP), }; -static const char *snd_pcm_stream_name(snd_pcm_stream_t stream) +static const char *snd_pcm_stream_name(int stream) { snd_assert(stream <= SNDRV_PCM_STREAM_LAST, return NULL); return snd_pcm_stream_names[stream]; @@ -208,23 +239,15 @@ static const char *snd_pcm_stream_name(snd_pcm_stream_t stream) static const char *snd_pcm_access_name(snd_pcm_access_t access) { - snd_assert(access <= SNDRV_PCM_ACCESS_LAST, return NULL); return snd_pcm_access_names[access]; } -const char *snd_pcm_format_name(snd_pcm_format_t format) -{ - snd_assert(format <= SNDRV_PCM_FORMAT_LAST, return NULL); - return snd_pcm_format_names[format]; -} - static const char *snd_pcm_subformat_name(snd_pcm_subformat_t subformat) { - snd_assert(subformat <= SNDRV_PCM_SUBFORMAT_LAST, return NULL); return snd_pcm_subformat_names[subformat]; } -static const char *snd_pcm_tstamp_mode_name(snd_pcm_tstamp_t mode) +static const char *snd_pcm_tstamp_mode_name(int mode) { snd_assert(mode <= SNDRV_PCM_TSTAMP_LAST, return NULL); return snd_pcm_tstamp_mode_names[mode]; @@ -232,7 +255,6 @@ static const char *snd_pcm_tstamp_mode_name(snd_pcm_tstamp_t mode) static const char *snd_pcm_state_name(snd_pcm_state_t state) { - snd_assert(state <= SNDRV_PCM_STATE_LAST, return NULL); return snd_pcm_state_names[state]; } @@ -267,10 +289,10 @@ static const char *snd_pcm_oss_format_name(int format) } #endif -#ifdef CONFIG_PROC_FS -static void snd_pcm_proc_info_read(snd_pcm_substream_t *substream, snd_info_buffer_t *buffer) +static void snd_pcm_proc_info_read(struct snd_pcm_substream *substream, + struct snd_info_buffer *buffer) { - snd_pcm_info_t *info; + struct snd_pcm_info *info; int err; if (! substream) @@ -302,20 +324,25 @@ static void snd_pcm_proc_info_read(snd_pcm_substream_t *substream, snd_info_buff kfree(info); } -static void snd_pcm_stream_proc_info_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) +static void snd_pcm_stream_proc_info_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) { - snd_pcm_proc_info_read(((snd_pcm_str_t *)entry->private_data)->substream, buffer); + snd_pcm_proc_info_read(((struct snd_pcm_str *)entry->private_data)->substream, + buffer); } -static void snd_pcm_substream_proc_info_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) +static void snd_pcm_substream_proc_info_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) { - snd_pcm_proc_info_read((snd_pcm_substream_t *)entry->private_data, buffer); + snd_pcm_proc_info_read((struct snd_pcm_substream *)entry->private_data, + buffer); } -static void snd_pcm_substream_proc_hw_params_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) +static void snd_pcm_substream_proc_hw_params_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) { - snd_pcm_substream_t *substream = (snd_pcm_substream_t *)entry->private_data; - snd_pcm_runtime_t *runtime = substream->runtime; + struct snd_pcm_substream *substream = entry->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; if (!runtime) { snd_iprintf(buffer, "closed\n"); return; @@ -347,10 +374,11 @@ static void snd_pcm_substream_proc_hw_params_read(snd_info_entry_t *entry, snd_i snd_pcm_stream_unlock_irq(substream); } -static void snd_pcm_substream_proc_sw_params_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) +static void snd_pcm_substream_proc_sw_params_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) { - snd_pcm_substream_t *substream = (snd_pcm_substream_t *)entry->private_data; - snd_pcm_runtime_t *runtime = substream->runtime; + struct snd_pcm_substream *substream = entry->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; if (!runtime) { snd_iprintf(buffer, "closed\n"); return; @@ -374,11 +402,12 @@ static void snd_pcm_substream_proc_sw_params_read(snd_info_entry_t *entry, snd_i snd_pcm_stream_unlock_irq(substream); } -static void snd_pcm_substream_proc_status_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) +static void snd_pcm_substream_proc_status_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) { - snd_pcm_substream_t *substream = (snd_pcm_substream_t *)entry->private_data; - snd_pcm_runtime_t *runtime = substream->runtime; - snd_pcm_status_t status; + struct snd_pcm_substream *substream = entry->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_pcm_status status; int err; if (!runtime) { snd_iprintf(buffer, "closed\n"); @@ -402,28 +431,29 @@ static void snd_pcm_substream_proc_status_read(snd_info_entry_t *entry, snd_info snd_iprintf(buffer, "hw_ptr : %ld\n", runtime->status->hw_ptr); snd_iprintf(buffer, "appl_ptr : %ld\n", runtime->control->appl_ptr); } -#endif #ifdef CONFIG_SND_DEBUG -static void snd_pcm_xrun_debug_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) +static void snd_pcm_xrun_debug_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) { - snd_pcm_str_t *pstr = (snd_pcm_str_t *)entry->private_data; + struct snd_pcm_str *pstr = entry->private_data; snd_iprintf(buffer, "%d\n", pstr->xrun_debug); } -static void snd_pcm_xrun_debug_write(snd_info_entry_t *entry, snd_info_buffer_t *buffer) +static void snd_pcm_xrun_debug_write(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) { - snd_pcm_str_t *pstr = (snd_pcm_str_t *)entry->private_data; + struct snd_pcm_str *pstr = entry->private_data; char line[64]; if (!snd_info_get_line(buffer, line, sizeof(line))) pstr->xrun_debug = simple_strtoul(line, NULL, 10); } #endif -static int snd_pcm_stream_proc_init(snd_pcm_str_t *pstr) +static int snd_pcm_stream_proc_init(struct snd_pcm_str *pstr) { - snd_pcm_t *pcm = pstr->pcm; - snd_info_entry_t *entry; + struct snd_pcm *pcm = pstr->pcm; + struct snd_info_entry *entry; char name[16]; sprintf(name, "pcm%i%c", pcm->device, @@ -447,7 +477,8 @@ static int snd_pcm_stream_proc_init(snd_pcm_str_t *pstr) pstr->proc_info_entry = entry; #ifdef CONFIG_SND_DEBUG - if ((entry = snd_info_create_card_entry(pcm->card, "xrun_debug", pstr->proc_root)) != NULL) { + if ((entry = snd_info_create_card_entry(pcm->card, "xrun_debug", + pstr->proc_root)) != NULL) { entry->c.text.read_size = 64; entry->c.text.read = snd_pcm_xrun_debug_read; entry->c.text.write_size = 64; @@ -464,7 +495,7 @@ static int snd_pcm_stream_proc_init(snd_pcm_str_t *pstr) return 0; } -static int snd_pcm_stream_proc_done(snd_pcm_str_t *pstr) +static int snd_pcm_stream_proc_done(struct snd_pcm_str *pstr) { #ifdef CONFIG_SND_DEBUG if (pstr->proc_xrun_debug_entry) { @@ -483,10 +514,10 @@ static int snd_pcm_stream_proc_done(snd_pcm_str_t *pstr) return 0; } -static int snd_pcm_substream_proc_init(snd_pcm_substream_t *substream) +static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream) { - snd_info_entry_t *entry; - snd_card_t *card; + struct snd_info_entry *entry; + struct snd_card *card; char name[16]; card = substream->pcm->card; @@ -540,7 +571,7 @@ static int snd_pcm_substream_proc_init(snd_pcm_substream_t *substream) return 0; } -static int snd_pcm_substream_proc_done(snd_pcm_substream_t *substream) +static int snd_pcm_substream_proc_done(struct snd_pcm_substream *substream) { if (substream->proc_info_entry) { snd_info_unregister(substream->proc_info_entry); @@ -564,6 +595,12 @@ static int snd_pcm_substream_proc_done(snd_pcm_substream_t *substream) } return 0; } +#else /* !CONFIG_PROC_FS */ +static inline int snd_pcm_stream_proc_init(struct snd_pcm_str *pstr) { return 0; } +static inline int snd_pcm_stream_proc_done(struct snd_pcm_str *pstr) { return 0; } +static inline int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream) { return 0; } +static inline int snd_pcm_substream_proc_done(struct snd_pcm_substream *substream) { return 0; } +#endif /* CONFIG_PROC_FS */ /** * snd_pcm_new_stream - create a new PCM stream @@ -578,11 +615,11 @@ static int snd_pcm_substream_proc_done(snd_pcm_substream_t *substream) * * Returns zero if successful, or a negative error code on failure. */ -int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count) +int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count) { int idx, err; - snd_pcm_str_t *pstr = &pcm->streams[stream]; - snd_pcm_substream_t *substream, *prev; + struct snd_pcm_str *pstr = &pcm->streams[stream]; + struct snd_pcm_substream *substream, *prev; #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) init_MUTEX(&pstr->oss.setup_mutex); @@ -590,17 +627,20 @@ int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count) pstr->stream = stream; pstr->pcm = pcm; pstr->substream_count = substream_count; - pstr->reg = &snd_pcm_reg[stream]; if (substream_count > 0) { err = snd_pcm_stream_proc_init(pstr); - if (err < 0) + if (err < 0) { + snd_printk(KERN_ERR "Error in snd_pcm_stream_proc_init\n"); return err; + } } prev = NULL; for (idx = 0, prev = NULL; idx < substream_count; idx++) { substream = kzalloc(sizeof(*substream), GFP_KERNEL); - if (substream == NULL) + if (substream == NULL) { + snd_printk(KERN_ERR "Cannot allocate PCM substream\n"); return -ENOMEM; + } substream->pcm = pcm; substream->pstr = pstr; substream->number = idx; @@ -613,6 +653,7 @@ int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count) prev->next = substream; err = snd_pcm_substream_proc_init(substream); if (err < 0) { + snd_printk(KERN_ERR "Error in snd_pcm_stream_proc_init\n"); kfree(substream); return err; } @@ -642,13 +683,13 @@ int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count) * * Returns zero if successful, or a negative error code on failure. */ -int snd_pcm_new(snd_card_t * card, char *id, int device, +int snd_pcm_new(struct snd_card *card, char *id, int device, int playback_count, int capture_count, - snd_pcm_t ** rpcm) + struct snd_pcm ** rpcm) { - snd_pcm_t *pcm; + struct snd_pcm *pcm; int err; - static snd_device_ops_t ops = { + static struct snd_device_ops ops = { .dev_free = snd_pcm_dev_free, .dev_register = snd_pcm_dev_register, .dev_disconnect = snd_pcm_dev_disconnect, @@ -659,13 +700,14 @@ int snd_pcm_new(snd_card_t * card, char *id, int device, *rpcm = NULL; snd_assert(card != NULL, return -ENXIO); pcm = kzalloc(sizeof(*pcm), GFP_KERNEL); - if (pcm == NULL) + if (pcm == NULL) { + snd_printk(KERN_ERR "Cannot allocate PCM\n"); return -ENOMEM; + } pcm->card = card; pcm->device = device; - if (id) { + if (id) strlcpy(pcm->id, id, sizeof(pcm->id)); - } if ((err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_PLAYBACK, playback_count)) < 0) { snd_pcm_free(pcm); return err; @@ -684,11 +726,11 @@ int snd_pcm_new(snd_card_t * card, char *id, int device, return 0; } -static void snd_pcm_free_stream(snd_pcm_str_t * pstr) +static void snd_pcm_free_stream(struct snd_pcm_str * pstr) { - snd_pcm_substream_t *substream, *substream_next; + struct snd_pcm_substream *substream, *substream_next; #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) - snd_pcm_oss_setup_t *setup, *setupn; + struct snd_pcm_oss_setup *setup, *setupn; #endif substream = pstr->substream; while (substream) { @@ -707,7 +749,7 @@ static void snd_pcm_free_stream(snd_pcm_str_t * pstr) #endif } -static int snd_pcm_free(snd_pcm_t *pcm) +static int snd_pcm_free(struct snd_pcm *pcm) { snd_assert(pcm != NULL, return -ENXIO); if (pcm->private_free) @@ -719,26 +761,26 @@ static int snd_pcm_free(snd_pcm_t *pcm) return 0; } -static int snd_pcm_dev_free(snd_device_t *device) +static int snd_pcm_dev_free(struct snd_device *device) { - snd_pcm_t *pcm = device->device_data; + struct snd_pcm *pcm = device->device_data; return snd_pcm_free(pcm); } static void snd_pcm_tick_timer_func(unsigned long data) { - snd_pcm_substream_t *substream = (snd_pcm_substream_t*) data; + struct snd_pcm_substream *substream = (struct snd_pcm_substream *) data; snd_pcm_tick_elapsed(substream); } -int snd_pcm_open_substream(snd_pcm_t *pcm, int stream, - snd_pcm_substream_t **rsubstream) +int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, + struct snd_pcm_substream **rsubstream) { - snd_pcm_str_t * pstr; - snd_pcm_substream_t * substream; - snd_pcm_runtime_t * runtime; - snd_ctl_file_t *kctl; - snd_card_t *card; + struct snd_pcm_str * pstr; + struct snd_pcm_substream *substream; + struct snd_pcm_runtime *runtime; + struct snd_ctl_file *kctl; + struct snd_card *card; struct list_head *list; int prefer_subdevice = -1; size_t size; @@ -800,7 +842,7 @@ int snd_pcm_open_substream(snd_pcm_t *pcm, int stream, if (runtime == NULL) return -ENOMEM; - size = PAGE_ALIGN(sizeof(snd_pcm_mmap_status_t)); + size = PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status)); runtime->status = snd_malloc_pages(size, GFP_KERNEL); if (runtime->status == NULL) { kfree(runtime); @@ -808,10 +850,11 @@ int snd_pcm_open_substream(snd_pcm_t *pcm, int stream, } memset((void*)runtime->status, 0, size); - size = PAGE_ALIGN(sizeof(snd_pcm_mmap_control_t)); + size = PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control)); runtime->control = snd_malloc_pages(size, GFP_KERNEL); if (runtime->control == NULL) { - snd_free_pages((void*)runtime->status, PAGE_ALIGN(sizeof(snd_pcm_mmap_status_t))); + snd_free_pages((void*)runtime->status, + PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))); kfree(runtime); return -ENOMEM; } @@ -832,39 +875,39 @@ int snd_pcm_open_substream(snd_pcm_t *pcm, int stream, return 0; } -void snd_pcm_release_substream(snd_pcm_substream_t *substream) +void snd_pcm_release_substream(struct snd_pcm_substream *substream) { - snd_pcm_runtime_t * runtime; + struct snd_pcm_runtime *runtime; substream->file = NULL; runtime = substream->runtime; snd_assert(runtime != NULL, return); if (runtime->private_free != NULL) runtime->private_free(runtime); - snd_free_pages((void*)runtime->status, PAGE_ALIGN(sizeof(snd_pcm_mmap_status_t))); - snd_free_pages((void*)runtime->control, PAGE_ALIGN(sizeof(snd_pcm_mmap_control_t))); + snd_free_pages((void*)runtime->status, + PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))); + snd_free_pages((void*)runtime->control, + PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))); kfree(runtime->hw_constraints.rules); kfree(runtime); substream->runtime = NULL; substream->pstr->substream_opened--; } -static int snd_pcm_dev_register(snd_device_t *device) +static int snd_pcm_dev_register(struct snd_device *device) { - int idx, cidx, err; - unsigned short minor; - snd_pcm_substream_t *substream; + int cidx, err; + struct snd_pcm_substream *substream; struct list_head *list; char str[16]; - snd_pcm_t *pcm = device->device_data; + struct snd_pcm *pcm = device->device_data; snd_assert(pcm != NULL && device != NULL, return -ENXIO); down(®ister_mutex); - idx = (pcm->card->number * SNDRV_PCM_DEVICES) + pcm->device; - if (snd_pcm_devices[idx]) { + if (snd_pcm_search(pcm->card, pcm->device)) { up(®ister_mutex); return -EBUSY; } - snd_pcm_devices[idx] = pcm; + list_add_tail(&pcm->list, &snd_pcm_devices); for (cidx = 0; cidx < 2; cidx++) { int devtype = -1; if (pcm->streams[cidx].substream == NULL) @@ -872,17 +915,19 @@ static int snd_pcm_dev_register(snd_device_t *device) switch (cidx) { case SNDRV_PCM_STREAM_PLAYBACK: sprintf(str, "pcmC%iD%ip", pcm->card->number, pcm->device); - minor = SNDRV_MINOR_PCM_PLAYBACK + idx; devtype = SNDRV_DEVICE_TYPE_PCM_PLAYBACK; break; case SNDRV_PCM_STREAM_CAPTURE: sprintf(str, "pcmC%iD%ic", pcm->card->number, pcm->device); - minor = SNDRV_MINOR_PCM_CAPTURE + idx; devtype = SNDRV_DEVICE_TYPE_PCM_CAPTURE; break; } - if ((err = snd_register_device(devtype, pcm->card, pcm->device, pcm->streams[cidx].reg, str)) < 0) { - snd_pcm_devices[idx] = NULL; + if ((err = snd_register_device(devtype, pcm->card, + pcm->device, + &snd_pcm_f_ops[cidx], + pcm, str)) < 0) + { + list_del(&pcm->list); up(®ister_mutex); return err; } @@ -890,48 +935,46 @@ static int snd_pcm_dev_register(snd_device_t *device) snd_pcm_timer_init(substream); } list_for_each(list, &snd_pcm_notify_list) { - snd_pcm_notify_t *notify; - notify = list_entry(list, snd_pcm_notify_t, list); + struct snd_pcm_notify *notify; + notify = list_entry(list, struct snd_pcm_notify, list); notify->n_register(pcm); } up(®ister_mutex); return 0; } -static int snd_pcm_dev_disconnect(snd_device_t *device) +static int snd_pcm_dev_disconnect(struct snd_device *device) { - snd_pcm_t *pcm = device->device_data; + struct snd_pcm *pcm = device->device_data; struct list_head *list; - snd_pcm_substream_t *substream; - int idx, cidx; + struct snd_pcm_substream *substream; + int cidx; down(®ister_mutex); - idx = (pcm->card->number * SNDRV_PCM_DEVICES) + pcm->device; - snd_pcm_devices[idx] = NULL; + list_del_init(&pcm->list); for (cidx = 0; cidx < 2; cidx++) for (substream = pcm->streams[cidx].substream; substream; substream = substream->next) if (substream->runtime) substream->runtime->status->state = SNDRV_PCM_STATE_DISCONNECTED; list_for_each(list, &snd_pcm_notify_list) { - snd_pcm_notify_t *notify; - notify = list_entry(list, snd_pcm_notify_t, list); + struct snd_pcm_notify *notify; + notify = list_entry(list, struct snd_pcm_notify, list); notify->n_disconnect(pcm); } up(®ister_mutex); return 0; } -static int snd_pcm_dev_unregister(snd_device_t *device) +static int snd_pcm_dev_unregister(struct snd_device *device) { - int idx, cidx, devtype; - snd_pcm_substream_t *substream; + int cidx, devtype; + struct snd_pcm_substream *substream; struct list_head *list; - snd_pcm_t *pcm = device->device_data; + struct snd_pcm *pcm = device->device_data; snd_assert(pcm != NULL, return -ENXIO); down(®ister_mutex); - idx = (pcm->card->number * SNDRV_PCM_DEVICES) + pcm->device; - snd_pcm_devices[idx] = NULL; + list_del(&pcm->list); for (cidx = 0; cidx < 2; cidx++) { devtype = -1; switch (cidx) { @@ -947,84 +990,99 @@ static int snd_pcm_dev_unregister(snd_device_t *device) snd_pcm_timer_done(substream); } list_for_each(list, &snd_pcm_notify_list) { - snd_pcm_notify_t *notify; - notify = list_entry(list, snd_pcm_notify_t, list); + struct snd_pcm_notify *notify; + notify = list_entry(list, struct snd_pcm_notify, list); notify->n_unregister(pcm); } up(®ister_mutex); return snd_pcm_free(pcm); } -int snd_pcm_notify(snd_pcm_notify_t *notify, int nfree) +int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree) { - int idx; + struct list_head *p; snd_assert(notify != NULL && notify->n_register != NULL && notify->n_unregister != NULL, return -EINVAL); down(®ister_mutex); if (nfree) { list_del(¬ify->list); - for (idx = 0; idx < SNDRV_CARDS * SNDRV_PCM_DEVICES; idx++) { - if (snd_pcm_devices[idx] == NULL) - continue; - notify->n_unregister(snd_pcm_devices[idx]); - } + list_for_each(p, &snd_pcm_devices) + notify->n_unregister(list_entry(p, + struct snd_pcm, list)); } else { list_add_tail(¬ify->list, &snd_pcm_notify_list); - for (idx = 0; idx < SNDRV_CARDS * SNDRV_PCM_DEVICES; idx++) { - if (snd_pcm_devices[idx] == NULL) - continue; - notify->n_register(snd_pcm_devices[idx]); - } + list_for_each(p, &snd_pcm_devices) + notify->n_register(list_entry(p, struct snd_pcm, list)); } up(®ister_mutex); return 0; } +#ifdef CONFIG_PROC_FS /* * Info interface */ -static void snd_pcm_proc_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer) +static void snd_pcm_proc_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) { - int idx; - snd_pcm_t *pcm; + struct list_head *p; + struct snd_pcm *pcm; down(®ister_mutex); - for (idx = 0; idx < SNDRV_CARDS * SNDRV_PCM_DEVICES; idx++) { - pcm = snd_pcm_devices[idx]; - if (pcm == NULL) - continue; - snd_iprintf(buffer, "%02i-%02i: %s : %s", idx / SNDRV_PCM_DEVICES, - idx % SNDRV_PCM_DEVICES, pcm->id, pcm->name); + list_for_each(p, &snd_pcm_devices) { + pcm = list_entry(p, struct snd_pcm, list); + snd_iprintf(buffer, "%02i-%02i: %s : %s", + pcm->card->number, pcm->device, pcm->id, pcm->name); if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) - snd_iprintf(buffer, " : playback %i", pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count); + snd_iprintf(buffer, " : playback %i", + pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count); if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) - snd_iprintf(buffer, " : capture %i", pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count); + snd_iprintf(buffer, " : capture %i", + pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count); snd_iprintf(buffer, "\n"); } up(®ister_mutex); } -/* - * ENTRY functions - */ - -static snd_info_entry_t *snd_pcm_proc_entry = NULL; +static struct snd_info_entry *snd_pcm_proc_entry = NULL; -static int __init alsa_pcm_init(void) +static void snd_pcm_proc_init(void) { - snd_info_entry_t *entry; + struct snd_info_entry *entry; - snd_ctl_register_ioctl(snd_pcm_control_ioctl); - snd_ctl_register_ioctl_compat(snd_pcm_control_ioctl); if ((entry = snd_info_create_module_entry(THIS_MODULE, "pcm", NULL)) != NULL) { - snd_info_set_text_ops(entry, NULL, SNDRV_CARDS * SNDRV_PCM_DEVICES * 128, snd_pcm_proc_read); + snd_info_set_text_ops(entry, NULL, SNDRV_CARDS * SNDRV_PCM_DEVICES * 128, + snd_pcm_proc_read); if (snd_info_register(entry) < 0) { snd_info_free_entry(entry); entry = NULL; } } snd_pcm_proc_entry = entry; +} + +static void snd_pcm_proc_done(void) +{ + if (snd_pcm_proc_entry) + snd_info_unregister(snd_pcm_proc_entry); +} + +#else /* !CONFIG_PROC_FS */ +#define snd_pcm_proc_init() +#define snd_pcm_proc_done() +#endif /* CONFIG_PROC_FS */ + + +/* + * ENTRY functions + */ + +static int __init alsa_pcm_init(void) +{ + snd_ctl_register_ioctl(snd_pcm_control_ioctl); + snd_ctl_register_ioctl_compat(snd_pcm_control_ioctl); + snd_pcm_proc_init(); return 0; } @@ -1032,16 +1090,12 @@ static void __exit alsa_pcm_exit(void) { snd_ctl_unregister_ioctl(snd_pcm_control_ioctl); snd_ctl_unregister_ioctl_compat(snd_pcm_control_ioctl); - if (snd_pcm_proc_entry) { - snd_info_unregister(snd_pcm_proc_entry); - snd_pcm_proc_entry = NULL; - } + snd_pcm_proc_done(); } module_init(alsa_pcm_init) module_exit(alsa_pcm_exit) -EXPORT_SYMBOL(snd_pcm_devices); EXPORT_SYMBOL(snd_pcm_new); EXPORT_SYMBOL(snd_pcm_new_stream); EXPORT_SYMBOL(snd_pcm_notify); |