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-rw-r--r--sound/core/pcm.c1012
1 files changed, 595 insertions, 417 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 1be470e942e..43932e8dce6 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -1,6 +1,6 @@
/*
* Digital Audio (PCM) abstract layer
- * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*
*
* This program is free software; you can redistribute it and/or modify
@@ -19,37 +19,81 @@
*
*/
-#include <sound/driver.h>
#include <linux/init.h>
#include <linux/slab.h>
+#include <linux/module.h>
#include <linux/time.h>
+#include <linux/mutex.h>
+#include <linux/device.h>
#include <sound/core.h>
#include <sound/minors.h>
#include <sound/pcm.h>
#include <sound/control.h>
#include <sound/info.h>
-MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Abramo Bagnara <abramo@alsa-project.org>");
+MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Abramo Bagnara <abramo@alsa-project.org>");
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 DEFINE_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_control_ioctl(snd_card_t * card,
- snd_ctl_file_t * control,
- unsigned int cmd, unsigned long arg)
+static struct snd_pcm *snd_pcm_get(struct snd_card *card, int device)
+{
+ struct snd_pcm *pcm;
+
+ list_for_each_entry(pcm, &snd_pcm_devices, list) {
+ if (pcm->internal)
+ continue;
+ if (pcm->card == card && pcm->device == device)
+ return pcm;
+ }
+ return NULL;
+}
+
+static int snd_pcm_next(struct snd_card *card, int device)
+{
+ struct snd_pcm *pcm;
+
+ list_for_each_entry(pcm, &snd_pcm_devices, list) {
+ if (pcm->internal)
+ continue;
+ if (pcm->card == card && pcm->device > device)
+ return pcm->device;
+ else if (pcm->card->number > card->number)
+ return -1;
+ }
+ return -1;
+}
+
+static int snd_pcm_add(struct snd_pcm *newpcm)
{
- unsigned int tmp;
+ struct snd_pcm *pcm;
+
+ list_for_each_entry(pcm, &snd_pcm_devices, list) {
+ if (pcm->card == newpcm->card && pcm->device == newpcm->device)
+ return -EBUSY;
+ if (pcm->card->number > newpcm->card->number ||
+ (pcm->card == newpcm->card &&
+ pcm->device > newpcm->device)) {
+ list_add(&newpcm->list, pcm->list.prev);
+ return 0;
+ }
+ }
+ list_add_tail(&newpcm->list, &snd_pcm_devices);
+ return 0;
+}
- 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 +101,59 @@ static int snd_pcm_control_ioctl(snd_card_t * card,
if (get_user(device, (int __user *)arg))
return -EFAULT;
- device = device < 0 ? 0 : device + 1;
- while (device < SNDRV_PCM_DEVICES) {
- if (snd_pcm_devices[tmp + device])
- break;
- device++;
- }
- if (device == SNDRV_PCM_DEVICES)
- device = -1;
+ mutex_lock(&register_mutex);
+ device = snd_pcm_next(card, device);
+ mutex_unlock(&register_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)
+ mutex_lock(&register_mutex);
+ pcm = snd_pcm_get(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:
+ mutex_unlock(&register_mutex);
+ return err;
}
case SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE:
{
@@ -115,40 +167,8 @@ static int snd_pcm_control_ioctl(snd_card_t * card,
}
return -ENOIOCTLCMD;
}
-#define STATE(v) [SNDRV_PCM_STATE_##v] = #v
-#define STREAM(v) [SNDRV_PCM_STREAM_##v] = #v
-#define READY(v) [SNDRV_PCM_READY_##v] = #v
-#define XRUN(v) [SNDRV_PCM_XRUN_##v] = #v
-#define SILENCE(v) [SNDRV_PCM_SILENCE_##v] = #v
-#define TSTAMP(v) [SNDRV_PCM_TSTAMP_##v] = #v
-#define ACCESS(v) [SNDRV_PCM_ACCESS_##v] = #v
-#define START(v) [SNDRV_PCM_START_##v] = #v
-#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),
-};
+#define FORMAT(v) [SNDRV_PCM_FORMAT_##v] = #v
static char *snd_pcm_format_names[] = {
FORMAT(S8),
@@ -189,6 +209,56 @@ static char *snd_pcm_format_names[] = {
FORMAT(S18_3BE),
FORMAT(U18_3LE),
FORMAT(U18_3BE),
+ FORMAT(G723_24),
+ FORMAT(G723_24_1B),
+ FORMAT(G723_40),
+ FORMAT(G723_40_1B),
+ FORMAT(DSD_U8),
+ FORMAT(DSD_U16_LE),
+};
+
+const char *snd_pcm_format_name(snd_pcm_format_t format)
+{
+ if ((__force unsigned int)format >= ARRAY_SIZE(snd_pcm_format_names))
+ return "Unknown";
+ return snd_pcm_format_names[(__force unsigned int)format];
+}
+EXPORT_SYMBOL_GPL(snd_pcm_format_name);
+
+#ifdef CONFIG_SND_VERBOSE_PROCFS
+
+#define STATE(v) [SNDRV_PCM_STATE_##v] = #v
+#define STREAM(v) [SNDRV_PCM_STREAM_##v] = #v
+#define READY(v) [SNDRV_PCM_READY_##v] = #v
+#define XRUN(v) [SNDRV_PCM_XRUN_##v] = #v
+#define SILENCE(v) [SNDRV_PCM_SILENCE_##v] = #v
+#define TSTAMP(v) [SNDRV_PCM_TSTAMP_##v] = #v
+#define ACCESS(v) [SNDRV_PCM_ACCESS_##v] = #v
+#define START(v) [SNDRV_PCM_START_##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_subformat_names[] = {
@@ -197,47 +267,37 @@ static char *snd_pcm_subformat_names[] = {
static char *snd_pcm_tstamp_mode_names[] = {
TSTAMP(NONE),
- TSTAMP(MMAP),
+ TSTAMP(ENABLE),
};
-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];
}
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];
+ return snd_pcm_access_names[(__force int)access];
}
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];
+ return snd_pcm_subformat_names[(__force int)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];
}
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];
+ return snd_pcm_state_names[(__force int)state];
}
-#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+#if IS_ENABLED(CONFIG_SND_PCM_OSS)
#include <linux/soundcard.h>
+
static const char *snd_pcm_oss_format_name(int format)
{
switch (format) {
@@ -267,17 +327,19 @@ 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;
- snd_runtime_check(substream, return);
+ if (! substream)
+ return;
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (! info) {
- printk(KERN_DEBUG "snd_pcm_proc_info_read: cannot malloc\n");
+ pcm_dbg(substream->pcm,
+ "snd_pcm_proc_info_read: cannot malloc\n");
return;
}
@@ -301,29 +363,34 @@ 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(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;
+
+ mutex_lock(&substream->pcm->open_mutex);
+ runtime = substream->runtime;
if (!runtime) {
snd_iprintf(buffer, "closed\n");
- return;
+ goto unlock;
}
- snd_pcm_stream_lock_irq(substream);
if (runtime->status->state == SNDRV_PCM_STATE_OPEN) {
snd_iprintf(buffer, "no setup\n");
- snd_pcm_stream_unlock_irq(substream);
- return;
+ goto unlock;
}
snd_iprintf(buffer, "access: %s\n", snd_pcm_access_name(runtime->access));
snd_iprintf(buffer, "format: %s\n", snd_pcm_format_name(runtime->format));
@@ -332,8 +399,7 @@ static void snd_pcm_substream_proc_hw_params_read(snd_info_entry_t *entry, snd_i
snd_iprintf(buffer, "rate: %u (%u/%u)\n", runtime->rate, runtime->rate_num, runtime->rate_den);
snd_iprintf(buffer, "period_size: %lu\n", runtime->period_size);
snd_iprintf(buffer, "buffer_size: %lu\n", runtime->buffer_size);
- snd_iprintf(buffer, "tick_time: %u\n", runtime->tick_time);
-#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+#if IS_ENABLED(CONFIG_SND_PCM_OSS)
if (substream->oss.oss) {
snd_iprintf(buffer, "OSS format: %s\n", snd_pcm_oss_format_name(runtime->oss.format));
snd_iprintf(buffer, "OSS channels: %u\n", runtime->oss.channels);
@@ -343,53 +409,60 @@ static void snd_pcm_substream_proc_hw_params_read(snd_info_entry_t *entry, snd_i
snd_iprintf(buffer, "OSS period frames: %lu\n", (unsigned long)runtime->oss.period_frames);
}
#endif
- snd_pcm_stream_unlock_irq(substream);
+ unlock:
+ mutex_unlock(&substream->pcm->open_mutex);
}
-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;
+
+ mutex_lock(&substream->pcm->open_mutex);
+ runtime = substream->runtime;
if (!runtime) {
snd_iprintf(buffer, "closed\n");
- return;
+ goto unlock;
}
- snd_pcm_stream_lock_irq(substream);
if (runtime->status->state == SNDRV_PCM_STATE_OPEN) {
snd_iprintf(buffer, "no setup\n");
- snd_pcm_stream_unlock_irq(substream);
- return;
+ goto unlock;
}
snd_iprintf(buffer, "tstamp_mode: %s\n", snd_pcm_tstamp_mode_name(runtime->tstamp_mode));
snd_iprintf(buffer, "period_step: %u\n", runtime->period_step);
- snd_iprintf(buffer, "sleep_min: %u\n", runtime->sleep_min);
snd_iprintf(buffer, "avail_min: %lu\n", runtime->control->avail_min);
- snd_iprintf(buffer, "xfer_align: %lu\n", runtime->xfer_align);
snd_iprintf(buffer, "start_threshold: %lu\n", runtime->start_threshold);
snd_iprintf(buffer, "stop_threshold: %lu\n", runtime->stop_threshold);
snd_iprintf(buffer, "silence_threshold: %lu\n", runtime->silence_threshold);
snd_iprintf(buffer, "silence_size: %lu\n", runtime->silence_size);
snd_iprintf(buffer, "boundary: %lu\n", runtime->boundary);
- snd_pcm_stream_unlock_irq(substream);
+ unlock:
+ mutex_unlock(&substream->pcm->open_mutex);
}
-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;
+ struct snd_pcm_status status;
int err;
+
+ mutex_lock(&substream->pcm->open_mutex);
+ runtime = substream->runtime;
if (!runtime) {
snd_iprintf(buffer, "closed\n");
- return;
+ goto unlock;
}
memset(&status, 0, sizeof(status));
err = snd_pcm_status(substream, &status);
if (err < 0) {
snd_iprintf(buffer, "error %d\n", err);
- return;
+ goto unlock;
}
snd_iprintf(buffer, "state: %s\n", snd_pcm_state_name(status.state));
+ snd_iprintf(buffer, "owner_pid : %d\n", pid_vnr(substream->pid));
snd_iprintf(buffer, "trigger_time: %ld.%09ld\n",
status.trigger_tstamp.tv_sec, status.trigger_tstamp.tv_nsec);
snd_iprintf(buffer, "tstamp : %ld.%09ld\n",
@@ -400,29 +473,32 @@ static void snd_pcm_substream_proc_status_read(snd_info_entry_t *entry, snd_info
snd_iprintf(buffer, "-----\n");
snd_iprintf(buffer, "hw_ptr : %ld\n", runtime->status->hw_ptr);
snd_iprintf(buffer, "appl_ptr : %ld\n", runtime->control->appl_ptr);
+ unlock:
+ mutex_unlock(&substream->pcm->open_mutex);
}
-#endif
-#ifdef CONFIG_SND_DEBUG
-static void snd_pcm_xrun_debug_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+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,
@@ -437,7 +513,7 @@ static int snd_pcm_stream_proc_init(snd_pcm_str_t *pstr)
pstr->proc_root = entry;
if ((entry = snd_info_create_card_entry(pcm->card, "info", pstr->proc_root)) != NULL) {
- snd_info_set_text_ops(entry, pstr, 256, snd_pcm_stream_proc_info_read);
+ snd_info_set_text_ops(entry, pstr, snd_pcm_stream_proc_info_read);
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
entry = NULL;
@@ -445,11 +521,10 @@ 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) {
- entry->c.text.read_size = 64;
+#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+ if ((entry = snd_info_create_card_entry(pcm->card, "xrun_debug",
+ pstr->proc_root)) != NULL) {
entry->c.text.read = snd_pcm_xrun_debug_read;
- entry->c.text.write_size = 64;
entry->c.text.write = snd_pcm_xrun_debug_write;
entry->mode |= S_IWUSR;
entry->private_data = pstr;
@@ -463,29 +538,23 @@ 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) {
- snd_info_unregister(pstr->proc_xrun_debug_entry);
- pstr->proc_xrun_debug_entry = NULL;
- }
+#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+ snd_info_free_entry(pstr->proc_xrun_debug_entry);
+ pstr->proc_xrun_debug_entry = NULL;
#endif
- if (pstr->proc_info_entry) {
- snd_info_unregister(pstr->proc_info_entry);
- pstr->proc_info_entry = NULL;
- }
- if (pstr->proc_root) {
- snd_info_unregister(pstr->proc_root);
- pstr->proc_root = NULL;
- }
+ snd_info_free_entry(pstr->proc_info_entry);
+ pstr->proc_info_entry = NULL;
+ snd_info_free_entry(pstr->proc_root);
+ pstr->proc_root = NULL;
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;
@@ -501,7 +570,8 @@ static int snd_pcm_substream_proc_init(snd_pcm_substream_t *substream)
substream->proc_root = entry;
if ((entry = snd_info_create_card_entry(card, "info", substream->proc_root)) != NULL) {
- snd_info_set_text_ops(entry, substream, 256, snd_pcm_substream_proc_info_read);
+ snd_info_set_text_ops(entry, substream,
+ snd_pcm_substream_proc_info_read);
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
entry = NULL;
@@ -510,7 +580,8 @@ static int snd_pcm_substream_proc_init(snd_pcm_substream_t *substream)
substream->proc_info_entry = entry;
if ((entry = snd_info_create_card_entry(card, "hw_params", substream->proc_root)) != NULL) {
- snd_info_set_text_ops(entry, substream, 256, snd_pcm_substream_proc_hw_params_read);
+ snd_info_set_text_ops(entry, substream,
+ snd_pcm_substream_proc_hw_params_read);
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
entry = NULL;
@@ -519,7 +590,8 @@ static int snd_pcm_substream_proc_init(snd_pcm_substream_t *substream)
substream->proc_hw_params_entry = entry;
if ((entry = snd_info_create_card_entry(card, "sw_params", substream->proc_root)) != NULL) {
- snd_info_set_text_ops(entry, substream, 256, snd_pcm_substream_proc_sw_params_read);
+ snd_info_set_text_ops(entry, substream,
+ snd_pcm_substream_proc_sw_params_read);
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
entry = NULL;
@@ -528,7 +600,8 @@ static int snd_pcm_substream_proc_init(snd_pcm_substream_t *substream)
substream->proc_sw_params_entry = entry;
if ((entry = snd_info_create_card_entry(card, "status", substream->proc_root)) != NULL) {
- snd_info_set_text_ops(entry, substream, 256, snd_pcm_substream_proc_status_read);
+ snd_info_set_text_ops(entry, substream,
+ snd_pcm_substream_proc_status_read);
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
entry = NULL;
@@ -538,31 +611,27 @@ 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);
- substream->proc_info_entry = NULL;
- }
- if (substream->proc_hw_params_entry) {
- snd_info_unregister(substream->proc_hw_params_entry);
- substream->proc_hw_params_entry = NULL;
- }
- if (substream->proc_sw_params_entry) {
- snd_info_unregister(substream->proc_sw_params_entry);
- substream->proc_sw_params_entry = NULL;
- }
- if (substream->proc_status_entry) {
- snd_info_unregister(substream->proc_status_entry);
- substream->proc_status_entry = NULL;
- }
- if (substream->proc_root) {
- snd_info_unregister(substream->proc_root);
- substream->proc_root = NULL;
- }
+ snd_info_free_entry(substream->proc_info_entry);
+ substream->proc_info_entry = NULL;
+ snd_info_free_entry(substream->proc_hw_params_entry);
+ substream->proc_hw_params_entry = NULL;
+ snd_info_free_entry(substream->proc_sw_params_entry);
+ substream->proc_sw_params_entry = NULL;
+ snd_info_free_entry(substream->proc_status_entry);
+ substream->proc_status_entry = NULL;
+ snd_info_free_entry(substream->proc_root);
+ substream->proc_root = NULL;
return 0;
}
+#else /* !CONFIG_SND_VERBOSE_PROCFS */
+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_SND_VERBOSE_PROCFS */
/**
* snd_pcm_new_stream - create a new PCM stream
@@ -575,31 +644,34 @@ static int snd_pcm_substream_proc_done(snd_pcm_substream_t *substream)
* calling this, i.e. zero must be given to the argument of
* snd_pcm_new().
*
- * Returns zero if successful, or a negative error code on failure.
+ * Return: 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);
+#if IS_ENABLED(CONFIG_SND_PCM_OSS)
+ mutex_init(&pstr->oss.setup_mutex);
#endif
pstr->stream = stream;
pstr->pcm = pcm;
pstr->substream_count = substream_count;
- pstr->reg = &snd_pcm_reg[stream];
- if (substream_count > 0) {
+ if (substream_count > 0 && !pcm->internal) {
err = snd_pcm_stream_proc_init(pstr);
- if (err < 0)
+ if (err < 0) {
+ pcm_err(pcm, "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) {
+ pcm_err(pcm, "Cannot allocate PCM substream\n");
return -ENOMEM;
+ }
substream->pcm = pcm;
substream->pstr = pstr;
substream->number = idx;
@@ -610,61 +682,58 @@ int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count)
pstr->substream = substream;
else
prev->next = substream;
- err = snd_pcm_substream_proc_init(substream);
- if (err < 0) {
- kfree(substream);
- return err;
+
+ if (!pcm->internal) {
+ err = snd_pcm_substream_proc_init(substream);
+ if (err < 0) {
+ pcm_err(pcm,
+ "Error in snd_pcm_stream_proc_init\n");
+ if (prev == NULL)
+ pstr->substream = NULL;
+ else
+ prev->next = NULL;
+ kfree(substream);
+ return err;
+ }
}
substream->group = &substream->self_group;
spin_lock_init(&substream->self_group.lock);
INIT_LIST_HEAD(&substream->self_group.substreams);
list_add_tail(&substream->link_list, &substream->self_group.substreams);
- spin_lock_init(&substream->timer_lock);
+ atomic_set(&substream->mmap_count, 0);
prev = substream;
}
return 0;
}
-/**
- * snd_pcm_new - create a new PCM instance
- * @card: the card instance
- * @id: the id string
- * @device: the device index (zero based)
- * @playback_count: the number of substreams for playback
- * @capture_count: the number of substreams for capture
- * @rpcm: the pointer to store the new pcm instance
- *
- * Creates a new PCM instance.
- *
- * The pcm operators have to be set afterwards to the new instance
- * via snd_pcm_set_ops().
- *
- * Returns zero if successful, or a negative error code on failure.
- */
-int snd_pcm_new(snd_card_t * card, char *id, int device,
- int playback_count, int capture_count,
- snd_pcm_t ** rpcm)
+EXPORT_SYMBOL(snd_pcm_new_stream);
+
+static int _snd_pcm_new(struct snd_card *card, const char *id, int device,
+ int playback_count, int capture_count, bool internal,
+ 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,
- .dev_unregister = snd_pcm_dev_unregister
};
- snd_assert(rpcm != NULL, return -EINVAL);
- *rpcm = NULL;
- snd_assert(card != NULL, return -ENXIO);
+ if (snd_BUG_ON(!card))
+ return -ENXIO;
+ if (rpcm)
+ *rpcm = NULL;
pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
- if (pcm == NULL)
+ if (pcm == NULL) {
+ dev_err(card->dev, "Cannot allocate PCM\n");
return -ENOMEM;
+ }
pcm->card = card;
pcm->device = device;
- if (id) {
+ pcm->internal = internal;
+ 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;
@@ -673,31 +742,86 @@ int snd_pcm_new(snd_card_t * card, char *id, int device,
snd_pcm_free(pcm);
return err;
}
- init_MUTEX(&pcm->open_mutex);
+ mutex_init(&pcm->open_mutex);
init_waitqueue_head(&pcm->open_wait);
if ((err = snd_device_new(card, SNDRV_DEV_PCM, pcm, &ops)) < 0) {
snd_pcm_free(pcm);
return err;
}
- *rpcm = pcm;
+ if (rpcm)
+ *rpcm = pcm;
return 0;
}
-static void snd_pcm_free_stream(snd_pcm_str_t * pstr)
+/**
+ * snd_pcm_new - create a new PCM instance
+ * @card: the card instance
+ * @id: the id string
+ * @device: the device index (zero based)
+ * @playback_count: the number of substreams for playback
+ * @capture_count: the number of substreams for capture
+ * @rpcm: the pointer to store the new pcm instance
+ *
+ * Creates a new PCM instance.
+ *
+ * The pcm operators have to be set afterwards to the new instance
+ * via snd_pcm_set_ops().
+ *
+ * Return: Zero if successful, or a negative error code on failure.
+ */
+int snd_pcm_new(struct snd_card *card, const char *id, int device,
+ int playback_count, int capture_count, struct snd_pcm **rpcm)
{
- snd_pcm_substream_t *substream, *substream_next;
-#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
- snd_pcm_oss_setup_t *setup, *setupn;
+ return _snd_pcm_new(card, id, device, playback_count, capture_count,
+ false, rpcm);
+}
+EXPORT_SYMBOL(snd_pcm_new);
+
+/**
+ * snd_pcm_new_internal - create a new internal PCM instance
+ * @card: the card instance
+ * @id: the id string
+ * @device: the device index (zero based - shared with normal PCMs)
+ * @playback_count: the number of substreams for playback
+ * @capture_count: the number of substreams for capture
+ * @rpcm: the pointer to store the new pcm instance
+ *
+ * Creates a new internal PCM instance with no userspace device or procfs
+ * entries. This is used by ASoC Back End PCMs in order to create a PCM that
+ * will only be used internally by kernel drivers. i.e. it cannot be opened
+ * by userspace. It provides existing ASoC components drivers with a substream
+ * and access to any private data.
+ *
+ * The pcm operators have to be set afterwards to the new instance
+ * via snd_pcm_set_ops().
+ *
+ * Return: Zero if successful, or a negative error code on failure.
+ */
+int snd_pcm_new_internal(struct snd_card *card, const char *id, int device,
+ int playback_count, int capture_count,
+ struct snd_pcm **rpcm)
+{
+ return _snd_pcm_new(card, id, device, playback_count, capture_count,
+ true, rpcm);
+}
+EXPORT_SYMBOL(snd_pcm_new_internal);
+
+static void snd_pcm_free_stream(struct snd_pcm_str * pstr)
+{
+ struct snd_pcm_substream *substream, *substream_next;
+#if IS_ENABLED(CONFIG_SND_PCM_OSS)
+ struct snd_pcm_oss_setup *setup, *setupn;
#endif
substream = pstr->substream;
while (substream) {
substream_next = substream->next;
+ snd_pcm_timer_done(substream);
snd_pcm_substream_proc_done(substream);
kfree(substream);
substream = substream_next;
}
snd_pcm_stream_proc_done(pstr);
-#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+#if IS_ENABLED(CONFIG_SND_PCM_OSS)
for (setup = pstr->oss.setup_list; setup; setup = setupn) {
setupn = setup->next;
kfree(setup->task_name);
@@ -706,9 +830,15 @@ 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);
+ struct snd_pcm_notify *notify;
+
+ if (!pcm)
+ return 0;
+ list_for_each_entry(notify, &snd_pcm_notify_list, list) {
+ notify->n_unregister(pcm);
+ }
if (pcm->private_free)
pcm->private_free(pcm);
snd_pcm_lib_preallocate_free_for_all(pcm);
@@ -718,50 +848,42 @@ 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)
+int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream,
+ struct file *file,
+ struct snd_pcm_substream **rsubstream)
{
- snd_pcm_substream_t *substream = (snd_pcm_substream_t*) data;
- snd_pcm_tick_elapsed(substream);
-}
-
-int snd_pcm_open_substream(snd_pcm_t *pcm, int stream,
- snd_pcm_substream_t **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 list_head *list;
+ struct snd_pcm_str * pstr;
+ struct snd_pcm_substream *substream;
+ struct snd_pcm_runtime *runtime;
+ struct snd_ctl_file *kctl;
+ struct snd_card *card;
int prefer_subdevice = -1;
size_t size;
- snd_assert(rsubstream != NULL, return -EINVAL);
+ if (snd_BUG_ON(!pcm || !rsubstream))
+ return -ENXIO;
*rsubstream = NULL;
- snd_assert(pcm != NULL, return -ENXIO);
pstr = &pcm->streams[stream];
- if (pstr->substream == NULL)
+ if (pstr->substream == NULL || pstr->substream_count == 0)
return -ENODEV;
card = pcm->card;
- down_read(&card->controls_rwsem);
- list_for_each(list, &card->ctl_files) {
- kctl = snd_ctl_file(list);
- if (kctl->pid == current->pid) {
+ read_lock(&card->ctl_files_rwlock);
+ list_for_each_entry(kctl, &card->ctl_files, list) {
+ if (kctl->pid == task_pid(current)) {
prefer_subdevice = kctl->prefer_pcm_subdevice;
- break;
+ if (prefer_subdevice != -1)
+ break;
}
}
- up_read(&card->controls_rwsem);
+ read_unlock(&card->ctl_files_rwlock);
- if (pstr->substream_count == 0)
- return -ENODEV;
switch (stream) {
case SNDRV_PCM_STREAM_PLAYBACK:
if (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX) {
@@ -783,6 +905,26 @@ int snd_pcm_open_substream(snd_pcm_t *pcm, int stream,
return -EINVAL;
}
+ if (file->f_flags & O_APPEND) {
+ if (prefer_subdevice < 0) {
+ if (pstr->substream_count > 1)
+ return -EINVAL; /* must be unique */
+ substream = pstr->substream;
+ } else {
+ for (substream = pstr->substream; substream;
+ substream = substream->next)
+ if (substream->number == prefer_subdevice)
+ break;
+ }
+ if (! substream)
+ return -ENODEV;
+ if (! SUBSTREAM_BUSY(substream))
+ return -EBADFD;
+ substream->ref_count++;
+ *rsubstream = substream;
+ return 0;
+ }
+
if (prefer_subdevice >= 0) {
for (substream = pstr->substream; substream; substream = substream->next)
if (!SUBSTREAM_BUSY(substream) && substream->number == prefer_subdevice)
@@ -799,7 +941,7 @@ 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);
@@ -807,130 +949,188 @@ 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;
}
memset((void*)runtime->control, 0, size);
init_waitqueue_head(&runtime->sleep);
- atomic_set(&runtime->mmap_count, 0);
- init_timer(&runtime->tick_timer);
- runtime->tick_timer.function = snd_pcm_tick_timer_func;
- runtime->tick_timer.data = (unsigned long) substream;
+ init_waitqueue_head(&runtime->tsleep);
runtime->status->state = SNDRV_PCM_STATE_OPEN;
substream->runtime = runtime;
substream->private_data = pcm->private_data;
+ substream->ref_count = 1;
+ substream->f_flags = file->f_flags;
+ substream->pid = get_pid(task_pid(current));
pstr->substream_opened++;
*rsubstream = substream;
return 0;
}
-void snd_pcm_release_substream(snd_pcm_substream_t *substream)
+void snd_pcm_detach_substream(struct snd_pcm_substream *substream)
{
- snd_pcm_runtime_t * runtime;
- substream->file = NULL;
+ struct snd_pcm_runtime *runtime;
+
+ if (PCM_RUNTIME_CHECK(substream))
+ return;
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);
+#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+ kfree(runtime->hwptr_log);
+#endif
kfree(runtime);
substream->runtime = NULL;
+ put_pid(substream->pid);
+ substream->pid = NULL;
substream->pstr->substream_opened--;
}
-static int snd_pcm_dev_register(snd_device_t *device)
+static ssize_t show_pcm_class(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- int idx, cidx, err;
- unsigned short minor;
- snd_pcm_substream_t *substream;
- struct list_head *list;
+ struct snd_pcm *pcm;
+ const char *str;
+ static const char *strs[SNDRV_PCM_CLASS_LAST + 1] = {
+ [SNDRV_PCM_CLASS_GENERIC] = "generic",
+ [SNDRV_PCM_CLASS_MULTI] = "multi",
+ [SNDRV_PCM_CLASS_MODEM] = "modem",
+ [SNDRV_PCM_CLASS_DIGITIZER] = "digitizer",
+ };
+
+ if (! (pcm = dev_get_drvdata(dev)) ||
+ pcm->dev_class > SNDRV_PCM_CLASS_LAST)
+ str = "none";
+ else
+ str = strs[pcm->dev_class];
+ return snprintf(buf, PAGE_SIZE, "%s\n", str);
+}
+
+static DEVICE_ATTR(pcm_class, S_IRUGO, show_pcm_class, NULL);
+static struct attribute *pcm_dev_attrs[] = {
+ &dev_attr_pcm_class.attr,
+ NULL
+};
+
+static struct attribute_group pcm_dev_attr_group = {
+ .attrs = pcm_dev_attrs,
+};
+
+static const struct attribute_group *pcm_dev_attr_groups[] = {
+ &pcm_dev_attr_group,
+ NULL
+};
+
+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];
- snd_pcm_t *pcm = device->device_data;
-
- snd_assert(pcm != NULL && device != NULL, return -ENXIO);
- down(&register_mutex);
- idx = (pcm->card->number * SNDRV_PCM_DEVICES) + pcm->device;
- if (snd_pcm_devices[idx]) {
- up(&register_mutex);
- return -EBUSY;
+ struct snd_pcm *pcm;
+ struct device *dev;
+
+ if (snd_BUG_ON(!device || !device->device_data))
+ return -ENXIO;
+ pcm = device->device_data;
+ mutex_lock(&register_mutex);
+ err = snd_pcm_add(pcm);
+ if (err) {
+ mutex_unlock(&register_mutex);
+ return err;
}
- snd_pcm_devices[idx] = pcm;
for (cidx = 0; cidx < 2; cidx++) {
int devtype = -1;
- if (pcm->streams[cidx].substream == NULL)
+ if (pcm->streams[cidx].substream == NULL || pcm->internal)
continue;
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;
- up(&register_mutex);
+ /* 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, str, dev);
+ 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);
}
- list_for_each(list, &snd_pcm_notify_list) {
- snd_pcm_notify_t *notify;
- notify = list_entry(list, snd_pcm_notify_t, list);
+
+ list_for_each_entry(notify, &snd_pcm_notify_list, list)
notify->n_register(pcm);
- }
- up(&register_mutex);
+
+ mutex_unlock(&register_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 list_head *list;
- snd_pcm_substream_t *substream;
- int idx, cidx;
-
- down(&register_mutex);
- idx = (pcm->card->number * SNDRV_PCM_DEVICES) + pcm->device;
- snd_pcm_devices[idx] = NULL;
+ struct snd_pcm *pcm = device->device_data;
+ struct snd_pcm_notify *notify;
+ struct snd_pcm_substream *substream;
+ int cidx, devtype;
+
+ mutex_lock(&register_mutex);
+ if (list_empty(&pcm->list))
+ goto unlock;
+
+ mutex_lock(&pcm->open_mutex);
+ wake_up(&pcm->open_wait);
+ list_del_init(&pcm->list);
for (cidx = 0; cidx < 2; cidx++)
- for (substream = pcm->streams[cidx].substream; substream; substream = substream->next)
- if (substream->runtime)
+ for (substream = pcm->streams[cidx].substream; substream; substream = substream->next) {
+ snd_pcm_stream_lock_irq(substream);
+ 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);
+ wake_up(&substream->runtime->sleep);
+ wake_up(&substream->runtime->tsleep);
+ }
+ snd_pcm_stream_unlock_irq(substream);
+ }
+ list_for_each_entry(notify, &snd_pcm_notify_list, list) {
notify->n_disconnect(pcm);
}
- up(&register_mutex);
- return 0;
-}
-
-static int snd_pcm_dev_unregister(snd_device_t *device)
-{
- int idx, cidx, devtype;
- snd_pcm_substream_t *substream;
- struct list_head *list;
- snd_pcm_t *pcm = device->device_data;
-
- snd_assert(pcm != NULL, return -ENXIO);
- down(&register_mutex);
- idx = (pcm->card->number * SNDRV_PCM_DEVICES) + pcm->device;
- snd_pcm_devices[idx] = NULL;
for (cidx = 0; cidx < 2; cidx++) {
devtype = -1;
switch (cidx) {
@@ -942,88 +1142,103 @@ static int snd_pcm_dev_unregister(snd_device_t *device)
break;
}
snd_unregister_device(devtype, pcm->card, pcm->device);
- for (substream = pcm->streams[cidx].substream; substream; substream = substream->next)
- 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);
- notify->n_unregister(pcm);
+ if (pcm->streams[cidx].chmap_kctl) {
+ snd_ctl_remove(pcm->card, pcm->streams[cidx].chmap_kctl);
+ pcm->streams[cidx].chmap_kctl = NULL;
+ }
}
- up(&register_mutex);
- return snd_pcm_free(pcm);
+ mutex_unlock(&pcm->open_mutex);
+ unlock:
+ mutex_unlock(&register_mutex);
+ return 0;
}
-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 snd_pcm *pcm;
- snd_assert(notify != NULL && notify->n_register != NULL && notify->n_unregister != NULL, return -EINVAL);
- down(&register_mutex);
+ if (snd_BUG_ON(!notify ||
+ !notify->n_register ||
+ !notify->n_unregister ||
+ !notify->n_disconnect))
+ return -EINVAL;
+ mutex_lock(&register_mutex);
if (nfree) {
list_del(&notify->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_entry(pcm, &snd_pcm_devices, list)
+ notify->n_unregister(pcm);
} else {
list_add_tail(&notify->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_entry(pcm, &snd_pcm_devices, list)
+ notify->n_register(pcm);
}
- up(&register_mutex);
+ mutex_unlock(&register_mutex);
return 0;
}
+EXPORT_SYMBOL(snd_pcm_notify);
+
+#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 snd_pcm *pcm;
- down(&register_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);
+ mutex_lock(&register_mutex);
+ list_for_each_entry(pcm, &snd_pcm_devices, 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(&register_mutex);
+ mutex_unlock(&register_mutex);
}
-/*
- * ENTRY functions
- */
-
-static snd_info_entry_t *snd_pcm_proc_entry = NULL;
+static struct snd_info_entry *snd_pcm_proc_entry;
-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, 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)
+{
+ snd_info_free_entry(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;
}
@@ -1031,45 +1246,8 @@ 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);
-EXPORT_SYMBOL(snd_pcm_open_substream);
-EXPORT_SYMBOL(snd_pcm_release_substream);
-EXPORT_SYMBOL(snd_pcm_format_name);
- /* pcm_native.c */
-EXPORT_SYMBOL(snd_pcm_link_rwlock);
-#ifdef CONFIG_PM
-EXPORT_SYMBOL(snd_pcm_suspend);
-EXPORT_SYMBOL(snd_pcm_suspend_all);
-#endif
-EXPORT_SYMBOL(snd_pcm_kernel_playback_ioctl);
-EXPORT_SYMBOL(snd_pcm_kernel_capture_ioctl);
-EXPORT_SYMBOL(snd_pcm_kernel_ioctl);
-EXPORT_SYMBOL(snd_pcm_mmap_data);
-#if SNDRV_PCM_INFO_MMAP_IOMEM
-EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem);
-#endif
- /* pcm_misc.c */
-EXPORT_SYMBOL(snd_pcm_format_signed);
-EXPORT_SYMBOL(snd_pcm_format_unsigned);
-EXPORT_SYMBOL(snd_pcm_format_linear);
-EXPORT_SYMBOL(snd_pcm_format_little_endian);
-EXPORT_SYMBOL(snd_pcm_format_big_endian);
-EXPORT_SYMBOL(snd_pcm_format_width);
-EXPORT_SYMBOL(snd_pcm_format_physical_width);
-EXPORT_SYMBOL(snd_pcm_format_size);
-EXPORT_SYMBOL(snd_pcm_format_silence_64);
-EXPORT_SYMBOL(snd_pcm_format_set_silence);
-EXPORT_SYMBOL(snd_pcm_build_linear_format);
-EXPORT_SYMBOL(snd_pcm_limit_hw_rates);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 18:37:22 +0000