*
*/
-#include <sound/driver.h>
#include <linux/mm.h>
#include <linux/file.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/time.h>
-#include <linux/latency.h>
+#include <linux/pm_qos_params.h>
#include <linux/uio.h>
+#include <linux/dma-mapping.h>
+#include <linux/math64.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/info.h>
#include <sound/timer.h>
#include <sound/minors.h>
#include <asm/io.h>
+#if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT)
+#include <dma-coherence.h>
+#endif
/*
* Compatibility
struct snd_pcm *pcm = substream->pcm;
struct snd_pcm_str *pstr = substream->pstr;
- snd_assert(substream != NULL, return -ENXIO);
memset(info, 0, sizeof(*info));
info->card = pcm->card->number;
info->device = pcm->device;
if (!(params->rmask & (1 << k)))
continue;
#ifdef RULES_DEBUG
- printk("%s = ", snd_pcm_hw_param_names[k]);
+ printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]);
printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]);
#endif
changed = snd_mask_refine(m, constrs_mask(constrs, k));
if (!(params->rmask & (1 << k)))
continue;
#ifdef RULES_DEBUG
- printk("%s = ", snd_pcm_hw_param_names[k]);
+ printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]);
if (i->empty)
printk("empty");
else
if (!doit)
continue;
#ifdef RULES_DEBUG
- printk("Rule %d [%p]: ", k, r->func);
+ printk(KERN_DEBUG "Rule %d [%p]: ", k, r->func);
if (r->var >= 0) {
printk("%s = ", snd_pcm_hw_param_names[r->var]);
if (hw_is_mask(r->var)) {
hw = &substream->runtime->hw;
if (!params->info)
- params->info = hw->info;
- if (!params->fifo_size)
- params->fifo_size = hw->fifo_size;
+ params->info = hw->info & ~SNDRV_PCM_INFO_FIFO_IN_FRAMES;
+ if (!params->fifo_size) {
+ m = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+ if (snd_mask_min(m) == snd_mask_max(m) &&
+ snd_interval_min(i) == snd_interval_max(i)) {
+ changed = substream->ops->ioctl(substream,
+ SNDRV_PCM_IOCTL1_FIFO_SIZE, params);
+ if (changed < 0)
+ return changed;
+ }
+ }
params->rmask = 0;
return 0;
}
struct snd_pcm_hw_params *params;
int err;
- params = kmalloc(sizeof(*params), GFP_KERNEL);
- if (!params) {
- err = -ENOMEM;
- goto out;
- }
- if (copy_from_user(params, _params, sizeof(*params))) {
- err = -EFAULT;
- goto out;
- }
+ params = memdup_user(_params, sizeof(*params));
+ if (IS_ERR(params))
+ return PTR_ERR(params);
+
err = snd_pcm_hw_refine(substream, params);
if (copy_to_user(_params, params, sizeof(*params))) {
if (!err)
err = -EFAULT;
}
-out:
+
kfree(params);
return err;
}
return usecs;
}
+static int calc_boundary(struct snd_pcm_runtime *runtime)
+{
+ u_int64_t boundary;
+
+ boundary = (u_int64_t)runtime->buffer_size *
+ (u_int64_t)runtime->period_size;
+#if BITS_PER_LONG < 64
+ /* try to find lowest common multiple for buffer and period */
+ if (boundary > LONG_MAX - runtime->buffer_size) {
+ u_int32_t remainder = -1;
+ u_int32_t divident = runtime->buffer_size;
+ u_int32_t divisor = runtime->period_size;
+ while (remainder) {
+ remainder = divident % divisor;
+ if (remainder) {
+ divident = divisor;
+ divisor = remainder;
+ }
+ }
+ boundary = div_u64(boundary, divisor);
+ if (boundary > LONG_MAX - runtime->buffer_size)
+ return -ERANGE;
+ }
+#endif
+ if (boundary == 0)
+ return -ERANGE;
+ runtime->boundary = boundary;
+ while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size)
+ runtime->boundary *= 2;
+ return 0;
+}
+
static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
unsigned int bits;
snd_pcm_uframes_t frames;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -ENXIO);
snd_pcm_stream_lock_irq(substream);
switch (runtime->status->state) {
case SNDRV_PCM_STATE_OPEN:
runtime->period_size = params_period_size(params);
runtime->periods = params_periods(params);
runtime->buffer_size = params_buffer_size(params);
- runtime->tick_time = params_tick_time(params);
runtime->info = params->info;
runtime->rate_num = params->rate_num;
runtime->rate_den = params->rate_den;
/* Default sw params */
runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE;
runtime->period_step = 1;
- runtime->sleep_min = 0;
runtime->control->avail_min = runtime->period_size;
- runtime->xfer_align = runtime->period_size;
runtime->start_threshold = 1;
runtime->stop_threshold = runtime->buffer_size;
runtime->silence_threshold = 0;
runtime->silence_size = 0;
- runtime->boundary = runtime->buffer_size;
- while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size)
- runtime->boundary *= 2;
+ err = calc_boundary(runtime);
+ if (err < 0)
+ goto _error;
snd_pcm_timer_resolution_change(substream);
runtime->status->state = SNDRV_PCM_STATE_SETUP;
- remove_acceptable_latency(substream->latency_id);
+ pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
+ substream->latency_id);
if ((usecs = period_to_usecs(runtime)) >= 0)
- set_acceptable_latency(substream->latency_id, usecs);
+ pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY,
+ substream->latency_id, usecs);
return 0;
_error:
/* hardware might be unuseable from this time,
struct snd_pcm_hw_params *params;
int err;
- params = kmalloc(sizeof(*params), GFP_KERNEL);
- if (!params) {
- err = -ENOMEM;
- goto out;
- }
- if (copy_from_user(params, _params, sizeof(*params))) {
- err = -EFAULT;
- goto out;
- }
+ params = memdup_user(_params, sizeof(*params));
+ if (IS_ERR(params))
+ return PTR_ERR(params);
+
err = snd_pcm_hw_params(substream, params);
if (copy_to_user(_params, params, sizeof(*params))) {
if (!err)
err = -EFAULT;
}
-out:
+
kfree(params);
return err;
}
struct snd_pcm_runtime *runtime;
int result = 0;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -ENXIO);
snd_pcm_stream_lock_irq(substream);
switch (runtime->status->state) {
case SNDRV_PCM_STATE_SETUP:
if (substream->ops->hw_free)
result = substream->ops->hw_free(substream);
runtime->status->state = SNDRV_PCM_STATE_OPEN;
- remove_acceptable_latency(substream->latency_id);
+ pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
+ substream->latency_id);
return result;
}
struct snd_pcm_sw_params *params)
{
struct snd_pcm_runtime *runtime;
+ int err;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -ENXIO);
snd_pcm_stream_lock_irq(substream);
if (runtime->status->state == SNDRV_PCM_STATE_OPEN) {
snd_pcm_stream_unlock_irq(substream);
return -EINVAL;
if (params->avail_min == 0)
return -EINVAL;
- if (params->xfer_align == 0 ||
- params->xfer_align % runtime->min_align != 0)
- return -EINVAL;
if (params->silence_size >= runtime->boundary) {
if (params->silence_threshold != 0)
return -EINVAL;
if (params->silence_threshold > runtime->buffer_size)
return -EINVAL;
}
+ err = 0;
snd_pcm_stream_lock_irq(substream);
runtime->tstamp_mode = params->tstamp_mode;
- runtime->sleep_min = params->sleep_min;
runtime->period_step = params->period_step;
runtime->control->avail_min = params->avail_min;
runtime->start_threshold = params->start_threshold;
runtime->stop_threshold = params->stop_threshold;
runtime->silence_threshold = params->silence_threshold;
runtime->silence_size = params->silence_size;
- runtime->xfer_align = params->xfer_align;
params->boundary = runtime->boundary;
if (snd_pcm_running(substream)) {
- if (runtime->sleep_min)
- snd_pcm_tick_prepare(substream);
- else
- snd_pcm_tick_set(substream, 0);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
runtime->silence_size > 0)
snd_pcm_playback_silence(substream, ULONG_MAX);
- wake_up(&runtime->sleep);
+ err = snd_pcm_update_state(substream, runtime);
}
snd_pcm_stream_unlock_irq(substream);
- return 0;
+ return err;
}
static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream,
status->trigger_tstamp = runtime->trigger_tstamp;
if (snd_pcm_running(substream)) {
snd_pcm_update_hw_ptr(substream);
- if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_MMAP)
+ if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) {
status->tstamp = runtime->status->tstamp;
- else
- snd_pcm_gettime(runtime, &status->tstamp);
- } else
- snd_pcm_gettime(runtime, &status->tstamp);
+ goto _tstamp_end;
+ }
+ }
+ snd_pcm_gettime(runtime, &status->tstamp);
+ _tstamp_end:
status->appl_ptr = runtime->control->appl_ptr;
status->hw_ptr = runtime->status->hw_ptr;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
status->avail = snd_pcm_playback_avail(runtime);
if (runtime->status->state == SNDRV_PCM_STATE_RUNNING ||
- runtime->status->state == SNDRV_PCM_STATE_DRAINING)
+ runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
status->delay = runtime->buffer_size - status->avail;
- else
+ status->delay += runtime->delay;
+ } else
status->delay = 0;
} else {
status->avail = snd_pcm_capture_avail(runtime);
if (runtime->status->state == SNDRV_PCM_STATE_RUNNING)
- status->delay = status->avail;
+ status->delay = status->avail + runtime->delay;
else
status->delay = 0;
}
struct snd_pcm_status __user * _status)
{
struct snd_pcm_status status;
- struct snd_pcm_runtime *runtime;
int res;
- snd_assert(substream != NULL, return -ENXIO);
- runtime = substream->runtime;
memset(&status, 0, sizeof(status));
res = snd_pcm_status(substream, &status);
if (res < 0)
struct snd_pcm_runtime *runtime;
unsigned int channel;
- snd_assert(substream != NULL, return -ENXIO);
channel = info->channel;
runtime = substream->runtime;
snd_pcm_stream_lock_irq(substream);
{
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_trigger_tstamp(substream);
+ runtime->hw_ptr_jiffies = jiffies;
runtime->status->state = state;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
runtime->silence_size > 0)
snd_pcm_playback_silence(substream, ULONG_MAX);
- if (runtime->sleep_min)
- snd_pcm_tick_prepare(substream);
if (substream->timer)
snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART,
&runtime->trigger_tstamp);
};
/**
- * snd_pcm_start
+ * snd_pcm_start - start all linked streams
* @substream: the PCM substream instance
- *
- * Start all linked streams.
*/
int snd_pcm_start(struct snd_pcm_substream *substream)
{
snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP,
&runtime->trigger_tstamp);
runtime->status->state = state;
- snd_pcm_tick_set(substream, 0);
}
wake_up(&runtime->sleep);
+ wake_up(&runtime->tsleep);
}
static struct action_ops snd_pcm_action_stop = {
};
/**
- * snd_pcm_stop
+ * snd_pcm_stop - try to stop all running streams in the substream group
* @substream: the PCM substream instance
* @state: PCM state after stopping the stream
*
- * Try to stop all running streams in the substream group.
- * The state of each stream is changed to the given value after that unconditionally.
+ * The state of each stream is then changed to the given state unconditionally.
*/
int snd_pcm_stop(struct snd_pcm_substream *substream, int state)
{
EXPORT_SYMBOL(snd_pcm_stop);
/**
- * snd_pcm_drain_done
+ * snd_pcm_drain_done - stop the DMA only when the given stream is playback
* @substream: the PCM substream
*
- * Stop the DMA only when the given stream is playback.
- * The state is changed to SETUP.
+ * After stopping, the state is changed to SETUP.
* Unlike snd_pcm_stop(), this affects only the given stream.
*/
int snd_pcm_drain_done(struct snd_pcm_substream *substream)
{
if (substream->runtime->trigger_master != substream)
return 0;
+ /* The jiffies check in snd_pcm_update_hw_ptr*() is done by
+ * a delta betwen the current jiffies, this gives a large enough
+ * delta, effectively to skip the check once.
+ */
+ substream->runtime->hw_ptr_jiffies = jiffies - HZ * 1000;
return substream->ops->trigger(substream,
push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH :
SNDRV_PCM_TRIGGER_PAUSE_RELEASE);
snd_timer_notify(substream->timer,
SNDRV_TIMER_EVENT_MPAUSE,
&runtime->trigger_tstamp);
- snd_pcm_tick_set(substream, 0);
wake_up(&runtime->sleep);
+ wake_up(&runtime->tsleep);
} else {
runtime->status->state = SNDRV_PCM_STATE_RUNNING;
- if (runtime->sleep_min)
- snd_pcm_tick_prepare(substream);
if (substream->timer)
snd_timer_notify(substream->timer,
SNDRV_TIMER_EVENT_MCONTINUE,
&runtime->trigger_tstamp);
runtime->status->suspended_state = runtime->status->state;
runtime->status->state = SNDRV_PCM_STATE_SUSPENDED;
- snd_pcm_tick_set(substream, 0);
wake_up(&runtime->sleep);
+ wake_up(&runtime->tsleep);
}
static struct action_ops snd_pcm_action_suspend = {
};
/**
- * snd_pcm_suspend
+ * snd_pcm_suspend - trigger SUSPEND to all linked streams
* @substream: the PCM substream
*
- * Trigger SUSPEND to all linked streams.
* After this call, all streams are changed to SUSPENDED state.
*/
int snd_pcm_suspend(struct snd_pcm_substream *substream)
EXPORT_SYMBOL(snd_pcm_suspend);
/**
- * snd_pcm_suspend_all
+ * snd_pcm_suspend_all - trigger SUSPEND to all substreams in the given pcm
* @pcm: the PCM instance
*
- * Trigger SUSPEND to all substreams in the given pcm.
* After this call, all streams are changed to SUSPENDED state.
*/
int snd_pcm_suspend_all(struct snd_pcm *pcm)
snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME,
&runtime->trigger_tstamp);
runtime->status->state = runtime->status->suspended_state;
- if (runtime->sleep_min)
- snd_pcm_tick_prepare(substream);
}
static struct action_ops snd_pcm_action_resume = {
int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL);
if (err < 0)
return err;
- // snd_assert(runtime->status->hw_ptr < runtime->buffer_size, );
runtime->hw_ptr_base = 0;
runtime->hw_ptr_interrupt = runtime->status->hw_ptr -
runtime->status->hw_ptr % runtime->period_size;
};
/**
- * snd_pcm_prepare
+ * snd_pcm_prepare - prepare the PCM substream to be triggerable
* @substream: the PCM substream instance
* @file: file to refer f_flags
- *
- * Prepare the PCM substream to be triggerable.
*/
static int snd_pcm_prepare(struct snd_pcm_substream *substream,
struct file *file)
static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state)
{
- if (substream->f_flags & O_NONBLOCK)
- return -EAGAIN;
substream->runtime->trigger_master = substream;
return 0;
}
} else {
/* stop running stream */
if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) {
- int state = snd_pcm_capture_avail(runtime) > 0 ?
+ int new_state = snd_pcm_capture_avail(runtime) > 0 ?
SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP;
- snd_pcm_do_stop(substream, state);
- snd_pcm_post_stop(substream, state);
+ snd_pcm_do_stop(substream, new_state);
+ snd_pcm_post_stop(substream, new_state);
}
}
return 0;
.post_action = snd_pcm_post_drain_init
};
-struct drain_rec {
- struct snd_pcm_substream *substream;
- wait_queue_t wait;
- snd_pcm_uframes_t stop_threshold;
-};
-
static int snd_pcm_drop(struct snd_pcm_substream *substream);
/*
* After this call, all streams are supposed to be either SETUP or DRAINING
* (capture only) state.
*/
-static int snd_pcm_drain(struct snd_pcm_substream *substream)
+static int snd_pcm_drain(struct snd_pcm_substream *substream,
+ struct file *file)
{
struct snd_card *card;
struct snd_pcm_runtime *runtime;
struct snd_pcm_substream *s;
+ wait_queue_t wait;
int result = 0;
- int i, num_drecs;
- struct drain_rec *drec, drec_tmp, *d;
+ int nonblock = 0;
- snd_assert(substream != NULL, return -ENXIO);
card = substream->pcm->card;
runtime = substream->runtime;
}
}
- /* allocate temporary record for drain sync */
- down_read(&snd_pcm_link_rwsem);
- if (snd_pcm_stream_linked(substream)) {
- drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL);
- if (! drec) {
- up_read(&snd_pcm_link_rwsem);
- snd_power_unlock(card);
- return -ENOMEM;
- }
- } else
- drec = &drec_tmp;
-
- /* count only playback streams */
- num_drecs = 0;
- snd_pcm_group_for_each_entry(s, substream) {
- runtime = s->runtime;
- if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- d = &drec[num_drecs++];
- d->substream = s;
- init_waitqueue_entry(&d->wait, current);
- add_wait_queue(&runtime->sleep, &d->wait);
- /* stop_threshold fixup to avoid endless loop when
- * stop_threshold > buffer_size
- */
- d->stop_threshold = runtime->stop_threshold;
- if (runtime->stop_threshold > runtime->buffer_size)
- runtime->stop_threshold = runtime->buffer_size;
- }
- }
- up_read(&snd_pcm_link_rwsem);
+ if (file) {
+ if (file->f_flags & O_NONBLOCK)
+ nonblock = 1;
+ } else if (substream->f_flags & O_NONBLOCK)
+ nonblock = 1;
+ down_read(&snd_pcm_link_rwsem);
snd_pcm_stream_lock_irq(substream);
/* resume pause */
- if (substream->runtime->status->state == SNDRV_PCM_STATE_PAUSED)
+ if (runtime->status->state == SNDRV_PCM_STATE_PAUSED)
snd_pcm_pause(substream, 0);
/* pre-start/stop - all running streams are changed to DRAINING state */
result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0);
- if (result < 0) {
- snd_pcm_stream_unlock_irq(substream);
- goto _error;
+ if (result < 0)
+ goto unlock;
+ /* in non-blocking, we don't wait in ioctl but let caller poll */
+ if (nonblock) {
+ result = -EAGAIN;
+ goto unlock;
}
for (;;) {
long tout;
+ struct snd_pcm_runtime *to_check;
if (signal_pending(current)) {
result = -ERESTARTSYS;
break;
}
- /* all finished? */
- for (i = 0; i < num_drecs; i++) {
- runtime = drec[i].substream->runtime;
- if (runtime->status->state == SNDRV_PCM_STATE_DRAINING)
+ /* find a substream to drain */
+ to_check = NULL;
+ snd_pcm_group_for_each_entry(s, substream) {
+ if (s->stream != SNDRV_PCM_STREAM_PLAYBACK)
+ continue;
+ runtime = s->runtime;
+ if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
+ to_check = runtime;
break;
+ }
}
- if (i == num_drecs)
- break; /* yes, all drained */
-
+ if (!to_check)
+ break; /* all drained */
+ init_waitqueue_entry(&wait, current);
+ add_wait_queue(&to_check->sleep, &wait);
set_current_state(TASK_INTERRUPTIBLE);
snd_pcm_stream_unlock_irq(substream);
+ up_read(&snd_pcm_link_rwsem);
snd_power_unlock(card);
tout = schedule_timeout(10 * HZ);
snd_power_lock(card);
+ down_read(&snd_pcm_link_rwsem);
snd_pcm_stream_lock_irq(substream);
+ remove_wait_queue(&to_check->sleep, &wait);
if (tout == 0) {
if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED)
result = -ESTRPIPE;
}
}
+ unlock:
snd_pcm_stream_unlock_irq(substream);
-
- _error:
- for (i = 0; i < num_drecs; i++) {
- d = &drec[i];
- runtime = d->substream->runtime;
- remove_wait_queue(&runtime->sleep, &d->wait);
- runtime->stop_threshold = d->stop_threshold;
- }
-
- if (drec != &drec_tmp)
- kfree(drec);
+ up_read(&snd_pcm_link_rwsem);
snd_power_unlock(card);
return result;
struct snd_card *card;
int result = 0;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
card = substream->pcm->card;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN ||
- runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
+ runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED ||
+ runtime->status->state == SNDRV_PCM_STATE_SUSPENDED)
return -EBADFD;
- snd_power_lock(card);
- if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
- result = snd_power_wait(card, SNDRV_CTL_POWER_D0);
- if (result < 0)
- goto _unlock;
- }
-
snd_pcm_stream_lock_irq(substream);
/* resume pause */
if (runtime->status->state == SNDRV_PCM_STATE_PAUSED)
snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP);
/* runtime->control->appl_ptr = runtime->status->hw_ptr; */
snd_pcm_stream_unlock_irq(substream);
- _unlock:
- snd_power_unlock(card);
+
return result;
}
mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX;
}
err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS,
hw->channels_min, hw->channels_max);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE,
hw->rate_min, hw->rate_max);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
hw->period_bytes_min, hw->period_bytes_max);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS,
hw->periods_min, hw->periods_max);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
hw->period_bytes_min, hw->buffer_bytes_max);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
snd_pcm_hw_rule_buffer_bytes_max, substream,
/* FIXME: remove */
if (runtime->dma_bytes) {
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return -EINVAL;
}
if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) {
}
/* FIXME: this belong to lowlevel */
- snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_TICK_TIME,
- 1000000 / HZ, 1000000 / HZ);
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
return 0;
struct snd_pcm_str *str;
int err;
- snd_assert(rpcm_file != NULL, return -EINVAL);
- *rpcm_file = NULL;
+ if (rpcm_file)
+ *rpcm_file = NULL;
err = snd_pcm_open_substream(pcm, stream, file, &substream);
if (err < 0)
substream->pcm_release = pcm_release_private;
}
file->private_data = pcm_file;
- *rpcm_file = pcm_file;
+ if (rpcm_file)
+ *rpcm_file = pcm_file;
return 0;
}
static int snd_pcm_playback_open(struct inode *inode, struct file *file)
{
struct snd_pcm *pcm;
-
+ int err = nonseekable_open(inode, file);
+ if (err < 0)
+ return err;
pcm = snd_lookup_minor_data(iminor(inode),
SNDRV_DEVICE_TYPE_PCM_PLAYBACK);
return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK);
static int snd_pcm_capture_open(struct inode *inode, struct file *file)
{
struct snd_pcm *pcm;
-
+ int err = nonseekable_open(inode, file);
+ if (err < 0)
+ return err;
pcm = snd_lookup_minor_data(iminor(inode),
SNDRV_DEVICE_TYPE_PCM_CAPTURE);
return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE);
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (snd_BUG_ON(!substream))
+ return -ENXIO;
pcm = substream->pcm;
- fasync_helper(-1, file, 0, &substream->runtime->fasync);
mutex_lock(&pcm->open_mutex);
snd_pcm_release_substream(substream);
kfree(pcm_file);
case SNDRV_PCM_STATE_XRUN:
ret = -EPIPE;
goto __end;
+ case SNDRV_PCM_STATE_SUSPENDED:
+ ret = -ESTRPIPE;
+ goto __end;
default:
ret = -EBADFD;
goto __end;
}
if (frames > (snd_pcm_uframes_t)hw_avail)
frames = hw_avail;
- else
- frames -= frames % runtime->xfer_align;
appl_ptr = runtime->control->appl_ptr - frames;
if (appl_ptr < 0)
appl_ptr += runtime->boundary;
runtime->control->appl_ptr = appl_ptr;
- if (runtime->status->state == SNDRV_PCM_STATE_RUNNING &&
- runtime->sleep_min)
- snd_pcm_tick_prepare(substream);
ret = frames;
__end:
snd_pcm_stream_unlock_irq(substream);
case SNDRV_PCM_STATE_XRUN:
ret = -EPIPE;
goto __end;
+ case SNDRV_PCM_STATE_SUSPENDED:
+ ret = -ESTRPIPE;
+ goto __end;
default:
ret = -EBADFD;
goto __end;
}
if (frames > (snd_pcm_uframes_t)hw_avail)
frames = hw_avail;
- else
- frames -= frames % runtime->xfer_align;
appl_ptr = runtime->control->appl_ptr - frames;
if (appl_ptr < 0)
appl_ptr += runtime->boundary;
runtime->control->appl_ptr = appl_ptr;
- if (runtime->status->state == SNDRV_PCM_STATE_RUNNING &&
- runtime->sleep_min)
- snd_pcm_tick_prepare(substream);
ret = frames;
__end:
snd_pcm_stream_unlock_irq(substream);
case SNDRV_PCM_STATE_XRUN:
ret = -EPIPE;
goto __end;
+ case SNDRV_PCM_STATE_SUSPENDED:
+ ret = -ESTRPIPE;
+ goto __end;
default:
ret = -EBADFD;
goto __end;
}
if (frames > (snd_pcm_uframes_t)avail)
frames = avail;
- else
- frames -= frames % runtime->xfer_align;
appl_ptr = runtime->control->appl_ptr + frames;
if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary)
appl_ptr -= runtime->boundary;
runtime->control->appl_ptr = appl_ptr;
- if (runtime->status->state == SNDRV_PCM_STATE_RUNNING &&
- runtime->sleep_min)
- snd_pcm_tick_prepare(substream);
ret = frames;
__end:
snd_pcm_stream_unlock_irq(substream);
case SNDRV_PCM_STATE_XRUN:
ret = -EPIPE;
goto __end;
+ case SNDRV_PCM_STATE_SUSPENDED:
+ ret = -ESTRPIPE;
+ goto __end;
default:
ret = -EBADFD;
goto __end;
}
if (frames > (snd_pcm_uframes_t)avail)
frames = avail;
- else
- frames -= frames % runtime->xfer_align;
appl_ptr = runtime->control->appl_ptr + frames;
if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary)
appl_ptr -= runtime->boundary;
runtime->control->appl_ptr = appl_ptr;
- if (runtime->status->state == SNDRV_PCM_STATE_RUNNING &&
- runtime->sleep_min)
- snd_pcm_tick_prepare(substream);
ret = frames;
__end:
snd_pcm_stream_unlock_irq(substream);
n = snd_pcm_playback_hw_avail(runtime);
else
n = snd_pcm_capture_avail(runtime);
+ n += runtime->delay;
break;
case SNDRV_PCM_STATE_XRUN:
err = -EPIPE;
struct snd_pcm_substream *substream,
unsigned int cmd, void __user *arg)
{
- snd_assert(substream != NULL, return -ENXIO);
-
switch (cmd) {
case SNDRV_PCM_IOCTL_PVERSION:
return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0;
case SNDRV_PCM_IOCTL_INFO:
return snd_pcm_info_user(substream, arg);
+ case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */
+ return 0;
case SNDRV_PCM_IOCTL_TTSTAMP:
return snd_pcm_tstamp(substream, arg);
case SNDRV_PCM_IOCTL_HW_REFINE:
return snd_pcm_hw_params_old_user(substream, arg);
#endif
case SNDRV_PCM_IOCTL_DRAIN:
- return snd_pcm_drain(substream);
+ return snd_pcm_drain(substream, file);
case SNDRV_PCM_IOCTL_DROP:
return snd_pcm_drop(substream);
case SNDRV_PCM_IOCTL_PAUSE:
struct snd_pcm_substream *substream,
unsigned int cmd, void __user *arg)
{
- snd_assert(substream != NULL, return -ENXIO);
- snd_assert(substream->stream == SNDRV_PCM_STREAM_PLAYBACK, return -EINVAL);
+ if (snd_BUG_ON(!substream))
+ return -ENXIO;
+ if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK))
+ return -EINVAL;
switch (cmd) {
case SNDRV_PCM_IOCTL_WRITEI_FRAMES:
{
return -EFAULT;
if (copy_from_user(&xfern, _xfern, sizeof(xfern)))
return -EFAULT;
- bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL);
- if (bufs == NULL)
- return -ENOMEM;
- if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) {
- kfree(bufs);
- return -EFAULT;
- }
+
+ bufs = memdup_user(xfern.bufs,
+ sizeof(void *) * runtime->channels);
+ if (IS_ERR(bufs))
+ return PTR_ERR(bufs);
result = snd_pcm_lib_writev(substream, bufs, xfern.frames);
kfree(bufs);
__put_user(result, &_xfern->result);
struct snd_pcm_substream *substream,
unsigned int cmd, void __user *arg)
{
- snd_assert(substream != NULL, return -ENXIO);
- snd_assert(substream->stream == SNDRV_PCM_STREAM_CAPTURE, return -EINVAL);
+ if (snd_BUG_ON(!substream))
+ return -ENXIO;
+ if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE))
+ return -EINVAL;
switch (cmd) {
case SNDRV_PCM_IOCTL_READI_FRAMES:
{
return -EFAULT;
if (copy_from_user(&xfern, _xfern, sizeof(xfern)))
return -EFAULT;
- bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL);
- if (bufs == NULL)
- return -ENOMEM;
- if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) {
- kfree(bufs);
- return -EFAULT;
- }
+
+ bufs = memdup_user(xfern.bufs,
+ sizeof(void *) * runtime->channels);
+ if (IS_ERR(bufs))
+ return PTR_ERR(bufs);
result = snd_pcm_lib_readv(substream, bufs, xfern.frames);
kfree(bufs);
__put_user(result, &_xfern->result);
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, result = -ENXIO; goto end);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN) {
- result = -EBADFD;
- goto end;
- }
- if (!frame_aligned(runtime, count)) {
- result = -EINVAL;
- goto end;
- }
+ if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
+ return -EBADFD;
+ if (!frame_aligned(runtime, count))
+ return -EINVAL;
count = bytes_to_frames(runtime, count);
result = snd_pcm_lib_write(substream, buf, count);
if (result > 0)
result = frames_to_bytes(runtime, result);
- end:
return result;
}
pcm_file = iocb->ki_filp->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
pcm_file = iocb->ki_filp->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, result = -ENXIO; goto end);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN) {
- result = -EBADFD;
- goto end;
- }
+ if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
+ return -EBADFD;
if (nr_segs > 128 || nr_segs != runtime->channels ||
- !frame_aligned(runtime, iov->iov_len)) {
- result = -EINVAL;
- goto end;
- }
+ !frame_aligned(runtime, iov->iov_len))
+ return -EINVAL;
frames = bytes_to_samples(runtime, iov->iov_len);
bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL);
if (bufs == NULL)
if (result > 0)
result = frames_to_bytes(runtime, result);
kfree(bufs);
- end:
return result;
}
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
poll_wait(file, &runtime->sleep, wait);
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
poll_wait(file, &runtime->sleep, wait);
return 0;
}
-static struct vm_operations_struct snd_pcm_vm_ops_status =
+static const struct vm_operations_struct snd_pcm_vm_ops_status =
{
.fault = snd_pcm_mmap_status_fault,
};
if (!(area->vm_flags & VM_READ))
return -EINVAL;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -EAGAIN);
size = area->vm_end - area->vm_start;
if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status)))
return -EINVAL;
return 0;
}
-static struct vm_operations_struct snd_pcm_vm_ops_control =
+static const struct vm_operations_struct snd_pcm_vm_ops_control =
{
.fault = snd_pcm_mmap_control_fault,
};
if (!(area->vm_flags & VM_READ))
return -EINVAL;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -EAGAIN);
size = area->vm_end - area->vm_start;
if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control)))
return -EINVAL;
}
#endif /* coherent mmap */
+static inline struct page *
+snd_pcm_default_page_ops(struct snd_pcm_substream *substream, unsigned long ofs)
+{
+ void *vaddr = substream->runtime->dma_area + ofs;
+#if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT)
+ if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
+ return virt_to_page(CAC_ADDR(vaddr));
+#endif
+#if defined(CONFIG_PPC32) && defined(CONFIG_NOT_COHERENT_CACHE)
+ if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) {
+ dma_addr_t addr = substream->runtime->dma_addr + ofs;
+ addr -= get_dma_offset(substream->dma_buffer.dev.dev);
+ /* assume dma_handle set via pfn_to_phys() in
+ * mm/dma-noncoherent.c
+ */
+ return pfn_to_page(addr >> PAGE_SHIFT);
+ }
+#endif
+ return virt_to_page(vaddr);
+}
+
/*
* fault callback for mmapping a RAM page
*/
struct snd_pcm_runtime *runtime;
unsigned long offset;
struct page * page;
- void *vaddr;
size_t dma_bytes;
if (substream == NULL)
dma_bytes = PAGE_ALIGN(runtime->dma_bytes);
if (offset > dma_bytes - PAGE_SIZE)
return VM_FAULT_SIGBUS;
- if (substream->ops->page) {
+ if (substream->ops->page)
page = substream->ops->page(substream, offset);
- if (!page)
- return VM_FAULT_SIGBUS;
- } else {
- vaddr = runtime->dma_area + offset;
- page = virt_to_page(vaddr);
- }
+ else
+ page = snd_pcm_default_page_ops(substream, offset);
+ if (!page)
+ return VM_FAULT_SIGBUS;
get_page(page);
vmf->page = page;
return 0;
}
-static struct vm_operations_struct snd_pcm_vm_ops_data =
-{
+static const struct vm_operations_struct snd_pcm_vm_ops_data = {
+ .open = snd_pcm_mmap_data_open,
+ .close = snd_pcm_mmap_data_close,
+};
+
+static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = {
.open = snd_pcm_mmap_data_open,
.close = snd_pcm_mmap_data_close,
.fault = snd_pcm_mmap_data_fault,
};
+#ifndef ARCH_HAS_DMA_MMAP_COHERENT
+/* This should be defined / handled globally! */
+#ifdef CONFIG_ARM
+#define ARCH_HAS_DMA_MMAP_COHERENT
+#endif
+#endif
+
/*
* mmap the DMA buffer on RAM
*/
static int snd_pcm_default_mmap(struct snd_pcm_substream *substream,
struct vm_area_struct *area)
{
- area->vm_ops = &snd_pcm_vm_ops_data;
- area->vm_private_data = substream;
area->vm_flags |= VM_RESERVED;
- atomic_inc(&substream->mmap_count);
+#ifdef ARCH_HAS_DMA_MMAP_COHERENT
+ if (!substream->ops->page &&
+ substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
+ return dma_mmap_coherent(substream->dma_buffer.dev.dev,
+ area,
+ substream->runtime->dma_area,
+ substream->runtime->dma_addr,
+ area->vm_end - area->vm_start);
+#elif defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT)
+ if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV &&
+ !plat_device_is_coherent(substream->dma_buffer.dev.dev))
+ area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
+#endif /* ARCH_HAS_DMA_MMAP_COHERENT */
+ /* mmap with fault handler */
+ area->vm_ops = &snd_pcm_vm_ops_data_fault;
return 0;
}
* mmap the DMA buffer on I/O memory area
*/
#if SNDRV_PCM_INFO_MMAP_IOMEM
-static struct vm_operations_struct snd_pcm_vm_ops_data_mmio =
-{
- .open = snd_pcm_mmap_data_open,
- .close = snd_pcm_mmap_data_close,
-};
-
int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream,
struct vm_area_struct *area)
{
long size;
unsigned long offset;
-#ifdef pgprot_noncached
area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
-#endif
- area->vm_ops = &snd_pcm_vm_ops_data_mmio;
- area->vm_private_data = substream;
area->vm_flags |= VM_IO;
size = area->vm_end - area->vm_start;
offset = area->vm_pgoff << PAGE_SHIFT;
(substream->runtime->dma_addr + offset) >> PAGE_SHIFT,
size, area->vm_page_prot))
return -EAGAIN;
- atomic_inc(&substream->mmap_count);
return 0;
}
EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem);
#endif /* SNDRV_PCM_INFO_MMAP */
+/* mmap callback with pgprot_noncached */
+int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream,
+ struct vm_area_struct *area)
+{
+ area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
+ return snd_pcm_default_mmap(substream, area);
+}
+EXPORT_SYMBOL(snd_pcm_lib_mmap_noncached);
+
/*
* mmap DMA buffer
*/
long size;
unsigned long offset;
size_t dma_bytes;
+ int err;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (!(area->vm_flags & (VM_WRITE|VM_READ)))
return -EINVAL;
}
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -EAGAIN);
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
if (!(runtime->info & SNDRV_PCM_INFO_MMAP))
if (offset > dma_bytes - size)
return -EINVAL;
+ area->vm_ops = &snd_pcm_vm_ops_data;
+ area->vm_private_data = substream;
if (substream->ops->mmap)
- return substream->ops->mmap(substream, area);
+ err = substream->ops->mmap(substream, area);
else
- return snd_pcm_default_mmap(substream, area);
+ err = snd_pcm_default_mmap(substream, area);
+ if (!err)
+ atomic_inc(&substream->mmap_count);
+ return err;
}
EXPORT_SYMBOL(snd_pcm_mmap_data);
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
offset = area->vm_pgoff << PAGE_SHIFT;
switch (offset) {
struct snd_pcm_file * pcm_file;
struct snd_pcm_substream *substream;
struct snd_pcm_runtime *runtime;
- int err;
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
-
- err = fasync_helper(fd, file, on, &runtime->fasync);
- if (err < 0)
- return err;
- return 0;
+ return fasync_helper(fd, file, on, &runtime->fasync);
}
/*
int err;
params = kmalloc(sizeof(*params), GFP_KERNEL);
- if (!params) {
- err = -ENOMEM;
- goto out;
- }
- oparams = kmalloc(sizeof(*oparams), GFP_KERNEL);
- if (!oparams) {
- err = -ENOMEM;
- goto out;
- }
+ if (!params)
+ return -ENOMEM;
- if (copy_from_user(oparams, _oparams, sizeof(*oparams))) {
- err = -EFAULT;
+ oparams = memdup_user(_oparams, sizeof(*oparams));
+ if (IS_ERR(oparams)) {
+ err = PTR_ERR(oparams);
goto out;
}
snd_pcm_hw_convert_from_old_params(params, oparams);
if (!err)
err = -EFAULT;
}
+
+ kfree(oparams);
out:
kfree(params);
- kfree(oparams);
return err;
}
int err;
params = kmalloc(sizeof(*params), GFP_KERNEL);
- if (!params) {
- err = -ENOMEM;
- goto out;
- }
- oparams = kmalloc(sizeof(*oparams), GFP_KERNEL);
- if (!oparams) {
- err = -ENOMEM;
- goto out;
- }
- if (copy_from_user(oparams, _oparams, sizeof(*oparams))) {
- err = -EFAULT;
+ if (!params)
+ return -ENOMEM;
+
+ oparams = memdup_user(_oparams, sizeof(*oparams));
+ if (IS_ERR(oparams)) {
+ err = PTR_ERR(oparams);
goto out;
}
snd_pcm_hw_convert_from_old_params(params, oparams);
if (!err)
err = -EFAULT;
}
+
+ kfree(oparams);
out:
kfree(params);
- kfree(oparams);
return err;
}
#endif /* CONFIG_SND_SUPPORT_OLD_API */
+#ifndef CONFIG_MMU
+static unsigned long snd_pcm_get_unmapped_area(struct file *file,
+ unsigned long addr,
+ unsigned long len,
+ unsigned long pgoff,
+ unsigned long flags)
+{
+ struct snd_pcm_file *pcm_file = file->private_data;
+ struct snd_pcm_substream *substream = pcm_file->substream;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ unsigned long offset = pgoff << PAGE_SHIFT;
+
+ switch (offset) {
+ case SNDRV_PCM_MMAP_OFFSET_STATUS:
+ return (unsigned long)runtime->status;
+ case SNDRV_PCM_MMAP_OFFSET_CONTROL:
+ return (unsigned long)runtime->control;
+ default:
+ return (unsigned long)runtime->dma_area + offset;
+ }
+}
+#else
+# define snd_pcm_get_unmapped_area NULL
+#endif
+
/*
* Register section
*/
.aio_write = snd_pcm_aio_write,
.open = snd_pcm_playback_open,
.release = snd_pcm_release,
+ .llseek = no_llseek,
.poll = snd_pcm_playback_poll,
.unlocked_ioctl = snd_pcm_playback_ioctl,
.compat_ioctl = snd_pcm_ioctl_compat,
.mmap = snd_pcm_mmap,
.fasync = snd_pcm_fasync,
+ .get_unmapped_area = snd_pcm_get_unmapped_area,
},
{
.owner = THIS_MODULE,
.aio_read = snd_pcm_aio_read,
.open = snd_pcm_capture_open,
.release = snd_pcm_release,
+ .llseek = no_llseek,
.poll = snd_pcm_capture_poll,
.unlocked_ioctl = snd_pcm_capture_ioctl,
.compat_ioctl = snd_pcm_ioctl_compat,
.mmap = snd_pcm_mmap,
.fasync = snd_pcm_fasync,
+ .get_unmapped_area = snd_pcm_get_unmapped_area,
}
};
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