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[ALSA] timer: formatting changes

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Modules: Timer Midlevel

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Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
This commit is contained in:
Clemens Ladisch 2005-10-12 17:20:21 +02:00 committed by Jaroslav Kysela
parent 9dfba38012
commit 6b172a8538
1 changed files with 167 additions and 112 deletions
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279
sound/core/timer.c
View file

@ -55,7 +55,7 @@ MODULE_PARM_DESC(timer_limit, "Maximum global timers in system.");
typedef struct {
snd_timer_instance_t *timeri;
int tread; /* enhanced read with timestamps and events */
int tread; /* enhanced read with timestamps and events */
unsigned long ticks;
unsigned long overrun;
int qhead;
@ -95,7 +95,8 @@ static void snd_timer_reschedule(snd_timer_t * timer, unsigned long ticks_left);
* create a timer instance with the given owner string.
* when timer is not NULL, increments the module counter
*/
static snd_timer_instance_t *snd_timer_instance_new(char *owner, snd_timer_t *timer)
static snd_timer_instance_t *snd_timer_instance_new(char *owner,
snd_timer_t *timer)
{
snd_timer_instance_t *timeri;
timeri = kzalloc(sizeof(*timeri), GFP_KERNEL);
@ -192,7 +193,8 @@ static void snd_timer_check_slave(snd_timer_instance_t *slave)
if (slave->slave_class == master->slave_class &&
slave->slave_id == master->slave_id) {
list_del(&slave->open_list);
list_add_tail(&slave->open_list, &master->slave_list_head);
list_add_tail(&slave->open_list,
&master->slave_list_head);
spin_lock_irq(&slave_active_lock);
slave->master = master;
slave->timer = master->timer;
@ -225,7 +227,8 @@ static void snd_timer_check_master(snd_timer_instance_t *master)
slave->master = master;
slave->timer = master->timer;
if (slave->flags & SNDRV_TIMER_IFLG_RUNNING)
list_add_tail(&slave->active_list, &master->slave_active_head);
list_add_tail(&slave->active_list,
&master->slave_active_head);
spin_unlock_irq(&slave_active_lock);
}
}
@ -241,7 +244,7 @@ int snd_timer_open(snd_timer_instance_t **ti,
{
snd_timer_t *timer;
snd_timer_instance_t *timeri = NULL;
if (tid->dev_class == SNDRV_TIMER_CLASS_SLAVE) {
/* open a slave instance */
if (tid->dev_sclass <= SNDRV_TIMER_SCLASS_NONE ||
@ -304,7 +307,8 @@ int snd_timer_open(snd_timer_instance_t **ti,
return 0;
}
static int _snd_timer_stop(snd_timer_instance_t * timeri, int keep_flag, enum sndrv_timer_event event);
static int _snd_timer_stop(snd_timer_instance_t * timeri,
int keep_flag, enum sndrv_timer_event event);
/*
* close a timer instance
@ -344,7 +348,8 @@ int snd_timer_close(snd_timer_instance_t * timeri)
spin_unlock_irq(&timer->lock);
down(&register_mutex);
list_del(&timeri->open_list);
if (timer && list_empty(&timer->open_list_head) && timer->hw.close)
if (timer && list_empty(&timer->open_list_head) &&
timer->hw.close)
timer->hw.close(timer);
/* remove slave links */
list_for_each_safe(p, n, &timeri->slave_list_head) {
@ -382,7 +387,8 @@ unsigned long snd_timer_resolution(snd_timer_instance_t * timeri)
return 0;
}
static void snd_timer_notify1(snd_timer_instance_t *ti, enum sndrv_timer_event event)
static void snd_timer_notify1(snd_timer_instance_t *ti,
enum sndrv_timer_event event)
{
snd_timer_t *timer;
unsigned long flags;
@ -392,8 +398,10 @@ static void snd_timer_notify1(snd_timer_instance_t *ti, enum sndrv_timer_event e
struct timespec tstamp;
getnstimeofday(&tstamp);
snd_assert(event >= SNDRV_TIMER_EVENT_START && event <= SNDRV_TIMER_EVENT_PAUSE, return);
if (event == SNDRV_TIMER_EVENT_START || event == SNDRV_TIMER_EVENT_CONTINUE)
snd_assert(event >= SNDRV_TIMER_EVENT_START &&
event <= SNDRV_TIMER_EVENT_PAUSE, return);
if (event == SNDRV_TIMER_EVENT_START ||
event == SNDRV_TIMER_EVENT_CONTINUE)
resolution = snd_timer_resolution(ti);
if (ti->ccallback)
ti->ccallback(ti, SNDRV_TIMER_EVENT_START, &tstamp, resolution);
@ -413,7 +421,8 @@ static void snd_timer_notify1(snd_timer_instance_t *ti, enum sndrv_timer_event e
spin_unlock_irqrestore(&timer->lock, flags);
}
static int snd_timer_start1(snd_timer_t *timer, snd_timer_instance_t *timeri, unsigned long sticks)
static int snd_timer_start1(snd_timer_t *timer, snd_timer_instance_t *timeri,
unsigned long sticks)
{
list_del(&timeri->active_list);
list_add_tail(&timeri->active_list, &timer->active_list_head);
@ -440,14 +449,15 @@ static int snd_timer_start_slave(snd_timer_instance_t *timeri)
spin_lock_irqsave(&slave_active_lock, flags);
timeri->flags |= SNDRV_TIMER_IFLG_RUNNING;
if (timeri->master)
list_add_tail(&timeri->active_list, &timeri->master->slave_active_head);
list_add_tail(&timeri->active_list,
&timeri->master->slave_active_head);
spin_unlock_irqrestore(&slave_active_lock, flags);
return 1; /* delayed start */
}
/*
* start the timer instance
*/
*/
int snd_timer_start(snd_timer_instance_t * timeri, unsigned int ticks)
{
snd_timer_t *timer;
@ -473,7 +483,8 @@ int snd_timer_start(snd_timer_instance_t * timeri, unsigned int ticks)
return result;
}
static int _snd_timer_stop(snd_timer_instance_t * timeri, int keep_flag, enum sndrv_timer_event event)
static int _snd_timer_stop(snd_timer_instance_t * timeri,
int keep_flag, enum sndrv_timer_event event)
{
snd_timer_t *timer;
unsigned long flags;
@ -507,7 +518,8 @@ static int _snd_timer_stop(snd_timer_instance_t * timeri, int keep_flag, enum sn
}
}
if (!keep_flag)
timeri->flags &= ~(SNDRV_TIMER_IFLG_RUNNING|SNDRV_TIMER_IFLG_START);
timeri->flags &=
~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START);
spin_unlock_irqrestore(&timer->lock, flags);
__end:
if (event != SNDRV_TIMER_EVENT_RESOLUTION)
@ -625,7 +637,7 @@ static void snd_timer_tasklet(unsigned long arg)
/* remove from ack_list and make empty */
list_del_init(p);
ticks = ti->pticks;
ti->pticks = 0;
resolution = ti->resolution;
@ -650,7 +662,7 @@ void snd_timer_interrupt(snd_timer_t * timer, unsigned long ticks_left)
{
snd_timer_instance_t *ti, *ts;
unsigned long resolution, ticks;
struct list_head *p, *q, *n;
struct list_head *p, *q, *n, *ack_list_head;
int use_tasklet = 0;
if (timer == NULL)
@ -665,8 +677,9 @@ void snd_timer_interrupt(snd_timer_t * timer, unsigned long ticks_left)
resolution = timer->hw.resolution;
/* loop for all active instances
* here we cannot use list_for_each because the active_list of a processed
* instance is relinked to done_list_head before callback is called.
* Here we cannot use list_for_each because the active_list of a
* processed instance is relinked to done_list_head before the callback
* is called.
*/
list_for_each_safe(p, n, &timer->active_list_head) {
ti = list_entry(p, snd_timer_instance_t, active_list);
@ -687,26 +700,19 @@ void snd_timer_interrupt(snd_timer_t * timer, unsigned long ticks_left)
if (--timer->running)
list_del(p);
}
if (list_empty(&ti->ack_list)) {
if ((timer->hw.flags & SNDRV_TIMER_HW_TASKLET) ||
(ti->flags & SNDRV_TIMER_IFLG_FAST)) {
list_add_tail(&ti->ack_list, &timer->ack_list_head);
} else {
list_add_tail(&ti->ack_list, &timer->sack_list_head);
}
}
if ((timer->hw.flags & SNDRV_TIMER_HW_TASKLET) ||
(ti->flags & SNDRV_TIMER_IFLG_FAST))
ack_list_head = &timer->ack_list_head;
else
ack_list_head = &timer->sack_list_head;
if (list_empty(&ti->ack_list))
list_add_tail(&ti->ack_list, ack_list_head);
list_for_each(q, &ti->slave_active_head) {
ts = list_entry(q, snd_timer_instance_t, active_list);
ts->pticks = ti->pticks;
ts->resolution = resolution;
if (list_empty(&ts->ack_list)) {
if ((timer->hw.flags & SNDRV_TIMER_HW_TASKLET) ||
(ti->flags & SNDRV_TIMER_IFLG_FAST)) {
list_add_tail(&ts->ack_list, &timer->ack_list_head);
} else {
list_add_tail(&ts->ack_list, &timer->sack_list_head);
}
}
if (list_empty(&ts->ack_list))
list_add_tail(&ts->ack_list, ack_list_head);
}
}
if (timer->flags & SNDRV_TIMER_FLG_RESCHED)
@ -730,10 +736,10 @@ void snd_timer_interrupt(snd_timer_t * timer, unsigned long ticks_left)
while (!list_empty(&timer->ack_list_head)) {
p = timer->ack_list_head.next; /* get first item */
ti = list_entry(p, snd_timer_instance_t, ack_list);
/* remove from ack_list and make empty */
list_del_init(p);
ticks = ti->pticks;
ti->pticks = 0;
@ -757,7 +763,8 @@ void snd_timer_interrupt(snd_timer_t * timer, unsigned long ticks_left)
*/
int snd_timer_new(snd_card_t *card, char *id, snd_timer_id_t *tid, snd_timer_t ** rtimer)
int snd_timer_new(snd_card_t *card, char *id, snd_timer_id_t *tid,
snd_timer_t **rtimer)
{
snd_timer_t *timer;
int err;
@ -785,10 +792,12 @@ int snd_timer_new(snd_card_t *card, char *id, snd_timer_id_t *tid, snd_timer_t *
INIT_LIST_HEAD(&timer->ack_list_head);
INIT_LIST_HEAD(&timer->sack_list_head);
spin_lock_init(&timer->lock);
tasklet_init(&timer->task_queue, snd_timer_tasklet, (unsigned long)timer);
tasklet_init(&timer->task_queue, snd_timer_tasklet,
(unsigned long)timer);
if (card != NULL) {
timer->module = card->module;
if ((err = snd_device_new(card, SNDRV_DEV_TIMER, timer, &ops)) < 0) {
err = snd_device_new(card, SNDRV_DEV_TIMER, timer, &ops);
if (err < 0) {
snd_timer_free(timer);
return err;
}
@ -818,7 +827,8 @@ static int snd_timer_dev_register(snd_device_t *dev)
snd_timer_t *timer1;
struct list_head *p;
snd_assert(timer != NULL && timer->hw.start != NULL && timer->hw.stop != NULL, return -ENXIO);
snd_assert(timer != NULL && timer->hw.start != NULL &&
timer->hw.stop != NULL, return -ENXIO);
if (!(timer->hw.flags & SNDRV_TIMER_HW_SLAVE) &&
!timer->hw.resolution && timer->hw.c_resolution == NULL)
return -EINVAL;
@ -879,7 +889,8 @@ static int snd_timer_dev_unregister(snd_device_t *device)
return snd_timer_unregister(timer);
}
void snd_timer_notify(snd_timer_t *timer, enum sndrv_timer_event event, struct timespec *tstamp)
void snd_timer_notify(snd_timer_t *timer, enum sndrv_timer_event event,
struct timespec *tstamp)
{
unsigned long flags;
unsigned long resolution = 0;
@ -888,7 +899,8 @@ void snd_timer_notify(snd_timer_t *timer, enum sndrv_timer_event event, struct t
if (! (timer->hw.flags & SNDRV_TIMER_HW_SLAVE))
return;
snd_assert(event >= SNDRV_TIMER_EVENT_MSTART && event <= SNDRV_TIMER_EVENT_MRESUME, return);
snd_assert(event >= SNDRV_TIMER_EVENT_MSTART &&
event <= SNDRV_TIMER_EVENT_MRESUME, return);
spin_lock_irqsave(&timer->lock, flags);
if (event == SNDRV_TIMER_EVENT_MSTART ||
event == SNDRV_TIMER_EVENT_MCONTINUE ||
@ -917,7 +929,7 @@ void snd_timer_notify(snd_timer_t *timer, enum sndrv_timer_event event, struct t
int snd_timer_global_new(char *id, int device, snd_timer_t **rtimer)
{
snd_timer_id_t tid;
tid.dev_class = SNDRV_TIMER_CLASS_GLOBAL;
tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
tid.card = -1;
@ -945,7 +957,7 @@ int snd_timer_global_unregister(snd_timer_t *timer)
return snd_timer_unregister(timer);
}
/*
/*
* System timer
*/
@ -1021,7 +1033,8 @@ static int snd_timer_register_system(void)
struct snd_timer_system_private *priv;
int err;
if ((err = snd_timer_global_new("system", SNDRV_TIMER_GLOBAL_SYSTEM, &timer)) < 0)
err = snd_timer_global_new("system", SNDRV_TIMER_GLOBAL_SYSTEM, &timer);
if (err < 0)
return err;
strcpy(timer->name, "system timer");
timer->hw = snd_timer_system;
@ -1058,27 +1071,35 @@ static void snd_timer_proc_read(snd_info_entry_t *entry,
snd_iprintf(buffer, "G%i: ", timer->tmr_device);
break;
case SNDRV_TIMER_CLASS_CARD:
snd_iprintf(buffer, "C%i-%i: ", timer->card->number, timer->tmr_device);
snd_iprintf(buffer, "C%i-%i: ",
timer->card->number, timer->tmr_device);
break;
case SNDRV_TIMER_CLASS_PCM:
snd_iprintf(buffer, "P%i-%i-%i: ", timer->card->number, timer->tmr_device, timer->tmr_subdevice);
snd_iprintf(buffer, "P%i-%i-%i: ", timer->card->number,
timer->tmr_device, timer->tmr_subdevice);
break;
default:
snd_iprintf(buffer, "?%i-%i-%i-%i: ", timer->tmr_class, timer->card ? timer->card->number : -1, timer->tmr_device, timer->tmr_subdevice);
snd_iprintf(buffer, "?%i-%i-%i-%i: ", timer->tmr_class,
timer->card ? timer->card->number : -1,
timer->tmr_device, timer->tmr_subdevice);
}
snd_iprintf(buffer, "%s :", timer->name);
if (timer->hw.resolution)
snd_iprintf(buffer, " %lu.%03luus (%lu ticks)", timer->hw.resolution / 1000, timer->hw.resolution % 1000, timer->hw.ticks);
snd_iprintf(buffer, " %lu.%03luus (%lu ticks)",
timer->hw.resolution / 1000,
timer->hw.resolution % 1000,
timer->hw.ticks);
if (timer->hw.flags & SNDRV_TIMER_HW_SLAVE)
snd_iprintf(buffer, " SLAVE");
snd_iprintf(buffer, "\n");
spin_lock_irqsave(&timer->lock, flags);
list_for_each(q, &timer->open_list_head) {
ti = list_entry(q, snd_timer_instance_t, open_list);
snd_iprintf(buffer, " Client %s : %s : lost interrupts %li\n",
ti->owner ? ti->owner : "unknown",
ti->flags & (SNDRV_TIMER_IFLG_START|SNDRV_TIMER_IFLG_RUNNING) ? "running" : "stopped",
ti->lost);
snd_iprintf(buffer, " Client %s : %s\n",
ti->owner ? ti->owner : "unknown",
ti->flags & (SNDRV_TIMER_IFLG_START |
SNDRV_TIMER_IFLG_RUNNING)
? "running" : "stopped");
}
spin_unlock_irqrestore(&timer->lock, flags);
}
@ -1096,7 +1117,7 @@ static void snd_timer_user_interrupt(snd_timer_instance_t *timeri,
snd_timer_user_t *tu = timeri->callback_data;
snd_timer_read_t *r;
int prev;
spin_lock(&tu->qlock);
if (tu->qused > 0) {
prev = tu->qtail == 0 ? tu->queue_size - 1 : tu->qtail - 1;
@ -1121,7 +1142,8 @@ static void snd_timer_user_interrupt(snd_timer_instance_t *timeri,
wake_up(&tu->qchange_sleep);
}
static void snd_timer_user_append_to_tqueue(snd_timer_user_t *tu, snd_timer_tread_t *tread)
static void snd_timer_user_append_to_tqueue(snd_timer_user_t *tu,
snd_timer_tread_t *tread)
{
if (tu->qused >= tu->queue_size) {
tu->overrun++;
@ -1140,7 +1162,8 @@ static void snd_timer_user_ccallback(snd_timer_instance_t *timeri,
snd_timer_user_t *tu = timeri->callback_data;
snd_timer_tread_t r1;
if (event >= SNDRV_TIMER_EVENT_START && event <= SNDRV_TIMER_EVENT_PAUSE)
if (event >= SNDRV_TIMER_EVENT_START &&
event <= SNDRV_TIMER_EVENT_PAUSE)
tu->tstamp = *tstamp;
if ((tu->filter & (1 << event)) == 0 || !tu->tread)
return;
@ -1165,13 +1188,15 @@ static void snd_timer_user_tinterrupt(snd_timer_instance_t *timeri,
memset(&tstamp, 0, sizeof(tstamp));
spin_lock(&tu->qlock);
if ((tu->filter & ((1 << SNDRV_TIMER_EVENT_RESOLUTION)|(1 << SNDRV_TIMER_EVENT_TICK))) == 0) {
if ((tu->filter & ((1 << SNDRV_TIMER_EVENT_RESOLUTION) |
(1 << SNDRV_TIMER_EVENT_TICK))) == 0) {
spin_unlock(&tu->qlock);
return;
}
if (tu->last_resolution != resolution || ticks > 0)
getnstimeofday(&tstamp);
if ((tu->filter & (1 << SNDRV_TIMER_EVENT_RESOLUTION)) && tu->last_resolution != resolution) {
if ((tu->filter & (1 << SNDRV_TIMER_EVENT_RESOLUTION)) &&
tu->last_resolution != resolution) {
r1.event = SNDRV_TIMER_EVENT_RESOLUTION;
r1.tstamp = tstamp;
r1.val = resolution;
@ -1209,7 +1234,7 @@ static void snd_timer_user_tinterrupt(snd_timer_instance_t *timeri,
static int snd_timer_user_open(struct inode *inode, struct file *file)
{
snd_timer_user_t *tu;
tu = kzalloc(sizeof(*tu), GFP_KERNEL);
if (tu == NULL)
return -ENOMEM;
@ -1218,7 +1243,8 @@ static int snd_timer_user_open(struct inode *inode, struct file *file)
init_MUTEX(&tu->tread_sem);
tu->ticks = 1;
tu->queue_size = 128;
tu->queue = (snd_timer_read_t *)kmalloc(tu->queue_size * sizeof(snd_timer_read_t), GFP_KERNEL);
tu->queue = kmalloc(tu->queue_size * sizeof(snd_timer_read_t),
GFP_KERNEL);
if (tu->queue == NULL) {
kfree(tu);
return -ENOMEM;
@ -1267,7 +1293,7 @@ static int snd_timer_user_next_device(snd_timer_id_t __user *_tid)
snd_timer_id_t id;
snd_timer_t *timer;
struct list_head *p;
if (copy_from_user(&id, _tid, sizeof(id)))
return -EFAULT;
down(&register_mutex);
@ -1308,7 +1334,11 @@ static int snd_timer_user_next_device(snd_timer_id_t __user *_tid)
if (id.device < 0) {
id.device = 0;
} else {
id.subdevice = id.subdevice < 0 ? 0 : id.subdevice + 1;
if (id.subdevice < 0) {
id.subdevice = 0;
} else {
id.subdevice++;
}
}
}
}
@ -1352,9 +1382,10 @@ static int snd_timer_user_next_device(snd_timer_id_t __user *_tid)
if (copy_to_user(_tid, &id, sizeof(*_tid)))
return -EFAULT;
return 0;
}
}
static int snd_timer_user_ginfo(struct file *file, snd_timer_ginfo_t __user *_ginfo)
static int snd_timer_user_ginfo(struct file *file,
snd_timer_ginfo_t __user *_ginfo)
{
snd_timer_ginfo_t *ginfo;
snd_timer_id_t tid;
@ -1398,7 +1429,8 @@ static int snd_timer_user_ginfo(struct file *file, snd_timer_ginfo_t __user *_gi
return err;
}
static int snd_timer_user_gparams(struct file *file, snd_timer_gparams_t __user *_gparams)
static int snd_timer_user_gparams(struct file *file,
snd_timer_gparams_t __user *_gparams)
{
snd_timer_gparams_t gparams;
snd_timer_t *t;
@ -1408,23 +1440,26 @@ static int snd_timer_user_gparams(struct file *file, snd_timer_gparams_t __user
return -EFAULT;
down(&register_mutex);
t = snd_timer_find(&gparams.tid);
if (t != NULL) {
if (list_empty(&t->open_list_head)) {
if (t->hw.set_period)
err = t->hw.set_period(t, gparams.period_num, gparams.period_den);
else
err = -ENOSYS;
} else {
err = -EBUSY;
}
} else {
if (!t) {
err = -ENODEV;
goto _error;
}
if (!list_empty(&t->open_list_head)) {
err = -EBUSY;
goto _error;
}
if (!t->hw.set_period) {
err = -ENOSYS;
goto _error;
}
err = t->hw.set_period(t, gparams.period_num, gparams.period_den);
_error:
up(&register_mutex);
return err;
}
static int snd_timer_user_gstatus(struct file *file, snd_timer_gstatus_t __user *_gstatus)
static int snd_timer_user_gstatus(struct file *file,
snd_timer_gstatus_t __user *_gstatus)
{
snd_timer_gstatus_t gstatus;
snd_timer_id_t tid;
@ -1444,7 +1479,8 @@ static int snd_timer_user_gstatus(struct file *file, snd_timer_gstatus_t __user
else
gstatus.resolution = t->hw.resolution;
if (t->hw.precise_resolution) {
t->hw.precise_resolution(t, &gstatus.resolution_num, &gstatus.resolution_den);
t->hw.precise_resolution(t, &gstatus.resolution_num,
&gstatus.resolution_den);
} else {
gstatus.resolution_num = gstatus.resolution;
gstatus.resolution_den = 1000000000uL;
@ -1458,13 +1494,14 @@ static int snd_timer_user_gstatus(struct file *file, snd_timer_gstatus_t __user
return err;
}
static int snd_timer_user_tselect(struct file *file, snd_timer_select_t __user *_tselect)
static int snd_timer_user_tselect(struct file *file,
snd_timer_select_t __user *_tselect)
{
snd_timer_user_t *tu;
snd_timer_select_t tselect;
char str[32];
int err = 0;
tu = file->private_data;
down(&tu->tread_sem);
if (tu->timeri) {
@ -1478,7 +1515,8 @@ static int snd_timer_user_tselect(struct file *file, snd_timer_select_t __user *
sprintf(str, "application %i", current->pid);
if (tselect.id.dev_class != SNDRV_TIMER_CLASS_SLAVE)
tselect.id.dev_sclass = SNDRV_TIMER_SCLASS_APPLICATION;
if ((err = snd_timer_open(&tu->timeri, str, &tselect.id, current->pid)) < 0)
err = snd_timer_open(&tu->timeri, str, &tselect.id, current->pid);
if (err < 0)
goto __err;
kfree(tu->queue);
@ -1486,21 +1524,24 @@ static int snd_timer_user_tselect(struct file *file, snd_timer_select_t __user *
kfree(tu->tqueue);
tu->tqueue = NULL;
if (tu->tread) {
tu->tqueue = (snd_timer_tread_t *)kmalloc(tu->queue_size * sizeof(snd_timer_tread_t), GFP_KERNEL);
tu->tqueue = kmalloc(tu->queue_size * sizeof(snd_timer_tread_t),
GFP_KERNEL);
if (tu->tqueue == NULL)
err = -ENOMEM;
} else {
tu->queue = (snd_timer_read_t *)kmalloc(tu->queue_size * sizeof(snd_timer_read_t), GFP_KERNEL);
tu->queue = kmalloc(tu->queue_size * sizeof(snd_timer_read_t),
GFP_KERNEL);
if (tu->queue == NULL)
err = -ENOMEM;
}
if (err < 0) {
snd_timer_close(tu->timeri);
tu->timeri = NULL;
} else {
tu->timeri->flags |= SNDRV_TIMER_IFLG_FAST;
tu->timeri->callback = tu->tread ? snd_timer_user_tinterrupt : snd_timer_user_interrupt;
tu->timeri->callback = tu->tread
? snd_timer_user_tinterrupt : snd_timer_user_interrupt;
tu->timeri->ccallback = snd_timer_user_ccallback;
tu->timeri->callback_data = (void *)tu;
}
@ -1510,7 +1551,8 @@ static int snd_timer_user_tselect(struct file *file, snd_timer_select_t __user *
return err;
}
static int snd_timer_user_info(struct file *file, snd_timer_info_t __user *_info)
static int snd_timer_user_info(struct file *file,
snd_timer_info_t __user *_info)
{
snd_timer_user_t *tu;
snd_timer_info_t *info;
@ -1537,7 +1579,8 @@ static int snd_timer_user_info(struct file *file, snd_timer_info_t __user *_info
return err;
}
static int snd_timer_user_params(struct file *file, snd_timer_params_t __user *_params)
static int snd_timer_user_params(struct file *file,
snd_timer_params_t __user *_params)
{
snd_timer_user_t *tu;
snd_timer_params_t params;
@ -1545,7 +1588,7 @@ static int snd_timer_user_params(struct file *file, snd_timer_params_t __user *_
snd_timer_read_t *tr;
snd_timer_tread_t *ttr;
int err;
tu = file->private_data;
snd_assert(tu->timeri != NULL, return -ENXIO);
t = tu->timeri->timer;
@ -1556,7 +1599,8 @@ static int snd_timer_user_params(struct file *file, snd_timer_params_t __user *_
err = -EINVAL;
goto _end;
}
if (params.queue_size > 0 && (params.queue_size < 32 || params.queue_size > 1024)) {
if (params.queue_size > 0 &&
(params.queue_size < 32 || params.queue_size > 1024)) {
err = -EINVAL;
goto _end;
}
@ -1589,16 +1633,19 @@ static int snd_timer_user_params(struct file *file, snd_timer_params_t __user *_
if (params.flags & SNDRV_TIMER_PSFLG_EARLY_EVENT)
tu->timeri->flags |= SNDRV_TIMER_IFLG_EARLY_EVENT;
spin_unlock_irq(&t->lock);
if (params.queue_size > 0 && (unsigned int)tu->queue_size != params.queue_size) {
if (params.queue_size > 0 &&
(unsigned int)tu->queue_size != params.queue_size) {
if (tu->tread) {
ttr = (snd_timer_tread_t *)kmalloc(params.queue_size * sizeof(snd_timer_tread_t), GFP_KERNEL);
ttr = kmalloc(params.queue_size * sizeof(*ttr),
GFP_KERNEL);
if (ttr) {
kfree(tu->tqueue);
tu->queue_size = params.queue_size;
tu->tqueue = ttr;
}
} else {
tr = (snd_timer_read_t *)kmalloc(params.queue_size * sizeof(snd_timer_read_t), GFP_KERNEL);
tr = kmalloc(params.queue_size * sizeof(*tr),
GFP_KERNEL);
if (tr) {
kfree(tu->queue);
tu->queue_size = params.queue_size;
@ -1622,7 +1669,6 @@ static int snd_timer_user_params(struct file *file, snd_timer_params_t __user *_
tu->qused++;
tu->qtail++;
}
}
tu->filter = params.filter;
tu->ticks = params.ticks;
@ -1633,11 +1679,12 @@ static int snd_timer_user_params(struct file *file, snd_timer_params_t __user *_
return err;
}
static int snd_timer_user_status(struct file *file, snd_timer_status_t __user *_status)
static int snd_timer_user_status(struct file *file,
snd_timer_status_t __user *_status)
{
snd_timer_user_t *tu;
snd_timer_status_t status;
tu = file->private_data;
snd_assert(tu->timeri != NULL, return -ENXIO);
memset(&status, 0, sizeof(status));
@ -1657,7 +1704,7 @@ static int snd_timer_user_start(struct file *file)
{
int err;
snd_timer_user_t *tu;
tu = file->private_data;
snd_assert(tu->timeri != NULL, return -ENXIO);
snd_timer_stop(tu->timeri);
@ -1670,7 +1717,7 @@ static int snd_timer_user_stop(struct file *file)
{
int err;
snd_timer_user_t *tu;
tu = file->private_data;
snd_assert(tu->timeri != NULL, return -ENXIO);
return (err = snd_timer_stop(tu->timeri)) < 0 ? err : 0;
@ -1680,7 +1727,7 @@ static int snd_timer_user_continue(struct file *file)
{
int err;
snd_timer_user_t *tu;
tu = file->private_data;
snd_assert(tu->timeri != NULL, return -ENXIO);
tu->timeri->lost = 0;
@ -1691,7 +1738,7 @@ static int snd_timer_user_pause(struct file *file)
{
int err;
snd_timer_user_t *tu;
tu = file->private_data;
snd_assert(tu->timeri != NULL, return -ENXIO);
return (err = snd_timer_pause(tu->timeri)) < 0 ? err : 0;
@ -1704,12 +1751,13 @@ enum {
SNDRV_TIMER_IOCTL_PAUSE_OLD = _IO('T', 0x23),
};
static long snd_timer_user_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
static long snd_timer_user_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
snd_timer_user_t *tu;
void __user *argp = (void __user *)arg;
int __user *p = argp;
tu = file->private_data;
switch (cmd) {
case SNDRV_TIMER_IOCTL_PVERSION:
@ -1719,7 +1767,7 @@ static long snd_timer_user_ioctl(struct file *file, unsigned int cmd, unsigned l
case SNDRV_TIMER_IOCTL_TREAD:
{
int xarg;
down(&tu->tread_sem);
if (tu->timeri) { /* too late */
up(&tu->tread_sem);
@ -1767,7 +1815,7 @@ static int snd_timer_user_fasync(int fd, struct file * file, int on)
{
snd_timer_user_t *tu;
int err;
tu = file->private_data;
err = fasync_helper(fd, file, on, &tu->fasync);
if (err < 0)
@ -1775,12 +1823,13 @@ static int snd_timer_user_fasync(int fd, struct file * file, int on)
return 0;
}
static ssize_t snd_timer_user_read(struct file *file, char __user *buffer, size_t count, loff_t *offset)
static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
size_t count, loff_t *offset)
{
snd_timer_user_t *tu;
long result = 0, unit;
int err = 0;
tu = file->private_data;
unit = tu->tread ? sizeof(snd_timer_tread_t) : sizeof(snd_timer_read_t);
spin_lock_irq(&tu->qlock);
@ -1814,12 +1863,14 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer, size_
goto _error;
if (tu->tread) {
if (copy_to_user(buffer, &tu->tqueue[tu->qhead++], sizeof(snd_timer_tread_t))) {
if (copy_to_user(buffer, &tu->tqueue[tu->qhead++],
sizeof(snd_timer_tread_t))) {
err = -EFAULT;
goto _error;
}
} else {
if (copy_to_user(buffer, &tu->queue[tu->qhead++], sizeof(snd_timer_read_t))) {
if (copy_to_user(buffer, &tu->queue[tu->qhead++],
sizeof(snd_timer_read_t))) {
err = -EFAULT;
goto _error;
}
@ -1846,7 +1897,7 @@ static unsigned int snd_timer_user_poll(struct file *file, poll_table * wait)
tu = file->private_data;
poll_wait(file, &tu->qchange_sleep, wait);
mask = 0;
if (tu->qused)
mask |= POLLIN | POLLRDNORM;
@ -1890,9 +1941,11 @@ static int __init alsa_timer_init(void)
snd_info_entry_t *entry;
#ifdef SNDRV_OSS_INFO_DEV_TIMERS
snd_oss_info_register(SNDRV_OSS_INFO_DEV_TIMERS, SNDRV_CARDS - 1, "system timer");
snd_oss_info_register(SNDRV_OSS_INFO_DEV_TIMERS, SNDRV_CARDS - 1,
"system timer");
#endif
if ((entry = snd_info_create_module_entry(THIS_MODULE, "timers", NULL)) != NULL) {
entry = snd_info_create_module_entry(THIS_MODULE, "timers", NULL);
if (entry != NULL) {
entry->c.text.read_size = SNDRV_TIMER_DEVICES * 128;
entry->c.text.read = snd_timer_proc_read;
if (snd_info_register(entry) < 0) {
@ -1902,10 +1955,12 @@ static int __init alsa_timer_init(void)
}
snd_timer_proc_entry = entry;
if ((err = snd_timer_register_system()) < 0)
snd_printk(KERN_ERR "unable to register system timer (%i)\n", err);
snd_printk(KERN_ERR "unable to register system timer (%i)\n",
err);
if ((err = snd_register_device(SNDRV_DEVICE_TYPE_TIMER,
NULL, 0, &snd_timer_reg, "timer"))<0)
snd_printk(KERN_ERR "unable to register timer device (%i)\n", err);
snd_printk(KERN_ERR "unable to register timer device (%i)\n",
err);
return 0;
}