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Merge branch 'fix/misc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 

* 'fix/misc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: lx6464es - remove unused struct member
  ALSA: lx6464es - cleanup of rmh message bus function
  ALSA: pcm - Simplify snd_pcm_drain() implementation
This commit is contained in:
Linus Torvalds 2009-09-23 10:04:14 -07:00
parent fe61c99a12 8fdc9e870c
commit 0c9af28074
3 changed files with 21 additions and 152 deletions
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73
sound/core/pcm_native.c
View File

@ -1387,11 +1387,6 @@ static struct action_ops snd_pcm_action_drain_init = {
.post_action = snd_pcm_post_drain_init
};
struct drain_rec {
struct snd_pcm_substream *substream;
wait_queue_t wait;
};
static int snd_pcm_drop(struct snd_pcm_substream *substream);
/*
@ -1407,10 +1402,9 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
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;
int nonblock = 0;
struct drain_rec *drec, drec_tmp, *d;
card = substream->pcm->card;
runtime = substream->runtime;
@ -1433,38 +1427,10 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
} else if (substream->f_flags & O_NONBLOCK)
nonblock = 1;
if (nonblock)
goto lock; /* no need to allocate waitqueues */
/* 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);
}
}
up_read(&snd_pcm_link_rwsem);
lock:
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 */
@ -1479,25 +1445,35 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
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;
@ -1512,16 +1488,7 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
unlock:
snd_pcm_stream_unlock_irq(substream);
if (!nonblock) {
for (i = 0; i < num_drecs; i++) {
d = &drec[i];
runtime = d->substream->runtime;
remove_wait_queue(&runtime->sleep, &d->wait);
}
if (drec != &drec_tmp)
kfree(drec);
}
up_read(&snd_pcm_link_rwsem);
snd_power_unlock(card);
return result;

2
sound/pci/lx6464es/lx6464es.h
View File

@ -86,7 +86,6 @@ struct lx6464es {
/* messaging */
spinlock_t msg_lock; /* message spinlock */
atomic_t send_message_locked;
struct lx_rmh rmh;
/* configuration */
@ -95,7 +94,6 @@ struct lx6464es {
uint hardware_running[2];
u32 board_sample_rate; /* sample rate read from
* board */
u32 sample_rate; /* our sample rate */
u16 pcm_granularity; /* board blocksize */
/* dma */

98
sound/pci/lx6464es/lx_core.c
View File

@ -314,98 +314,6 @@ static inline void lx_message_dump(struct lx_rmh *rmh)
#define XILINX_POLL_NO_SLEEP 100
#define XILINX_POLL_ITERATIONS 150
#if 0 /* not used now */
static int lx_message_send(struct lx6464es *chip, struct lx_rmh *rmh)
{
u32 reg = ED_DSP_TIMED_OUT;
int dwloop;
int answer_received;
if (lx_dsp_reg_read(chip, eReg_CSM) & (Reg_CSM_MC | Reg_CSM_MR)) {
snd_printk(KERN_ERR LXP "PIOSendMessage eReg_CSM %x\n", reg);
return -EBUSY;
}
/* write command */
lx_dsp_reg_writebuf(chip, eReg_CRM1, rmh->cmd, rmh->cmd_len);
snd_BUG_ON(atomic_read(&chip->send_message_locked) != 0);
atomic_set(&chip->send_message_locked, 1);
/* MicoBlaze gogogo */
lx_dsp_reg_write(chip, eReg_CSM, Reg_CSM_MC);
/* wait for interrupt to answer */
for (dwloop = 0; dwloop != XILINX_TIMEOUT_MS; ++dwloop) {
answer_received = atomic_read(&chip->send_message_locked);
if (answer_received == 0)
break;
msleep(1);
}
if (answer_received == 0) {
/* in Debug mode verify Reg_CSM_MR */
snd_BUG_ON(!(lx_dsp_reg_read(chip, eReg_CSM) & Reg_CSM_MR));
/* command finished, read status */
if (rmh->dsp_stat == 0)
reg = lx_dsp_reg_read(chip, eReg_CRM1);
else
reg = 0;
} else {
int i;
snd_printk(KERN_WARNING LXP "TIMEOUT lx_message_send! "
"Interrupts disabled?\n");
/* attente bit Reg_CSM_MR */
for (i = 0; i != XILINX_POLL_ITERATIONS; i++) {
if ((lx_dsp_reg_read(chip, eReg_CSM) & Reg_CSM_MR)) {
if (rmh->dsp_stat == 0)
reg = lx_dsp_reg_read(chip, eReg_CRM1);
else
reg = 0;
goto polling_successful;
}
if (i > XILINX_POLL_NO_SLEEP)
msleep(1);
}
snd_printk(KERN_WARNING LXP "TIMEOUT lx_message_send! "
"polling failed\n");
polling_successful:
atomic_set(&chip->send_message_locked, 0);
}
if ((reg & ERROR_VALUE) == 0) {
/* read response */
if (rmh->stat_len) {
snd_BUG_ON(rmh->stat_len >= (REG_CRM_NUMBER-1));
lx_dsp_reg_readbuf(chip, eReg_CRM2, rmh->stat,
rmh->stat_len);
}
} else
snd_printk(KERN_WARNING LXP "lx_message_send: error_value %x\n",
reg);
/* clear Reg_CSM_MR */
lx_dsp_reg_write(chip, eReg_CSM, 0);
switch (reg) {
case ED_DSP_TIMED_OUT:
snd_printk(KERN_WARNING LXP "lx_message_send: dsp timeout\n");
return -ETIMEDOUT;
case ED_DSP_CRASHED:
snd_printk(KERN_WARNING LXP "lx_message_send: dsp crashed\n");
return -EAGAIN;
}
lx_message_dump(rmh);
return 0;
}
#endif /* not used now */
static int lx_message_send_atomic(struct lx6464es *chip, struct lx_rmh *rmh)
{
@ -423,7 +331,7 @@ static int lx_message_send_atomic(struct lx6464es *chip, struct lx_rmh *rmh)
/* MicoBlaze gogogo */
lx_dsp_reg_write(chip, eReg_CSM, Reg_CSM_MC);
/* wait for interrupt to answer */
/* wait for device to answer */
for (dwloop = 0; dwloop != XILINX_TIMEOUT_MS * 1000; ++dwloop) {
if (lx_dsp_reg_read(chip, eReg_CSM) & Reg_CSM_MR) {
if (rmh->dsp_stat == 0)
@ -1175,10 +1083,6 @@ static int lx_interrupt_ack(struct lx6464es *chip, u32 *r_irqsrc,
*r_async_escmd = 1;
}
if (irqsrc & MASK_SYS_STATUS_CMD_DONE)
/* xilinx command notification */
atomic_set(&chip->send_message_locked, 0);
if (irq_async) {
/* snd_printd("interrupt: async event pending\n"); */
*r_async_pending = 1;