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path: root/sound/drivers/aloop.c
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Diffstat (limited to 'sound/drivers/aloop.c')
-rw-r--r--sound/drivers/aloop.c82
1 files changed, 47 insertions, 35 deletions
diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c
index 8b5c36f4d30..2a16c86a60b 100644
--- a/sound/drivers/aloop.c
+++ b/sound/drivers/aloop.c
@@ -165,6 +165,7 @@ static inline unsigned int get_rate_shift(struct loopback_pcm *dpcm)
return get_setup(dpcm)->rate_shift;
}
+/* call in cable->lock */
static void loopback_timer_start(struct loopback_pcm *dpcm)
{
unsigned long tick;
@@ -184,6 +185,7 @@ static void loopback_timer_start(struct loopback_pcm *dpcm)
add_timer(&dpcm->timer);
}
+/* call in cable->lock */
static inline void loopback_timer_stop(struct loopback_pcm *dpcm)
{
del_timer(&dpcm->timer);
@@ -269,8 +271,8 @@ static int loopback_trigger(struct snd_pcm_substream *substream, int cmd)
spin_lock(&cable->lock);
cable->running |= stream;
cable->pause &= ~stream;
- spin_unlock(&cable->lock);
loopback_timer_start(dpcm);
+ spin_unlock(&cable->lock);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
loopback_active_notify(dpcm);
break;
@@ -278,23 +280,25 @@ static int loopback_trigger(struct snd_pcm_substream *substream, int cmd)
spin_lock(&cable->lock);
cable->running &= ~stream;
cable->pause &= ~stream;
- spin_unlock(&cable->lock);
loopback_timer_stop(dpcm);
+ spin_unlock(&cable->lock);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
loopback_active_notify(dpcm);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
spin_lock(&cable->lock);
cable->pause |= stream;
- spin_unlock(&cable->lock);
loopback_timer_stop(dpcm);
+ spin_unlock(&cable->lock);
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ case SNDRV_PCM_TRIGGER_RESUME:
spin_lock(&cable->lock);
dpcm->last_jiffies = jiffies;
cable->pause &= ~stream;
- spin_unlock(&cable->lock);
loopback_timer_start(dpcm);
+ spin_unlock(&cable->lock);
break;
default:
return -EINVAL;
@@ -321,7 +325,7 @@ static void params_change(struct snd_pcm_substream *substream)
struct loopback_pcm *dpcm = runtime->private_data;
struct loopback_cable *cable = dpcm->cable;
- cable->hw.formats = (1ULL << runtime->format);
+ cable->hw.formats = pcm_format_to_bits(runtime->format);
cable->hw.rate_min = runtime->rate;
cable->hw.rate_max = runtime->rate;
cable->hw.channels_min = runtime->channels;
@@ -472,6 +476,7 @@ static inline void bytepos_finish(struct loopback_pcm *dpcm,
dpcm->buf_pos %= dpcm->pcm_buffer_size;
}
+/* call in cable->lock */
static unsigned int loopback_pos_update(struct loopback_cable *cable)
{
struct loopback_pcm *dpcm_play =
@@ -480,9 +485,7 @@ static unsigned int loopback_pos_update(struct loopback_cable *cable)
cable->streams[SNDRV_PCM_STREAM_CAPTURE];
unsigned long delta_play = 0, delta_capt = 0;
unsigned int running, count1, count2;
- unsigned long flags;
- spin_lock_irqsave(&cable->lock, flags);
running = cable->running ^ cable->pause;
if (running & (1 << SNDRV_PCM_STREAM_PLAYBACK)) {
delta_play = jiffies - dpcm_play->last_jiffies;
@@ -524,38 +527,46 @@ static unsigned int loopback_pos_update(struct loopback_cable *cable)
bytepos_finish(dpcm_play, count1);
bytepos_finish(dpcm_capt, count1);
unlock:
- spin_unlock_irqrestore(&cable->lock, flags);
return running;
}
static void loopback_timer_function(unsigned long data)
{
struct loopback_pcm *dpcm = (struct loopback_pcm *)data;
- unsigned int running;
+ unsigned long flags;
- running = loopback_pos_update(dpcm->cable);
- if (running & (1 << dpcm->substream->stream)) {
+ spin_lock_irqsave(&dpcm->cable->lock, flags);
+ if (loopback_pos_update(dpcm->cable) & (1 << dpcm->substream->stream)) {
loopback_timer_start(dpcm);
if (dpcm->period_update_pending) {
dpcm->period_update_pending = 0;
+ spin_unlock_irqrestore(&dpcm->cable->lock, flags);
+ /* need to unlock before calling below */
snd_pcm_period_elapsed(dpcm->substream);
+ return;
}
}
+ spin_unlock_irqrestore(&dpcm->cable->lock, flags);
}
static snd_pcm_uframes_t loopback_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct loopback_pcm *dpcm = runtime->private_data;
+ snd_pcm_uframes_t pos;
+ spin_lock(&dpcm->cable->lock);
loopback_pos_update(dpcm->cable);
- return bytes_to_frames(runtime, dpcm->buf_pos);
+ pos = dpcm->buf_pos;
+ spin_unlock(&dpcm->cable->lock);
+ return bytes_to_frames(runtime, pos);
}
static struct snd_pcm_hardware loopback_pcm_hardware =
{
.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP |
- SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE),
+ SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE |
+ SNDRV_PCM_INFO_RESUME),
.formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE |
SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE),
@@ -766,8 +777,8 @@ static struct snd_pcm_ops loopback_capture_ops = {
.mmap = snd_pcm_lib_mmap_vmalloc,
};
-static int __devinit loopback_pcm_new(struct loopback *loopback,
- int device, int substreams)
+static int loopback_pcm_new(struct loopback *loopback,
+ int device, int substreams)
{
struct snd_pcm *pcm;
int err;
@@ -941,7 +952,7 @@ static int loopback_channels_get(struct snd_kcontrol *kcontrol,
return 0;
}
-static struct snd_kcontrol_new loopback_controls[] __devinitdata = {
+static struct snd_kcontrol_new loopback_controls[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "PCM Rate Shift 100000",
@@ -990,7 +1001,7 @@ static struct snd_kcontrol_new loopback_controls[] __devinitdata = {
}
};
-static int __devinit loopback_mixer_new(struct loopback *loopback, int notify)
+static int loopback_mixer_new(struct loopback *loopback, int notify)
{
struct snd_card *card = loopback->card;
struct snd_pcm *pcm;
@@ -1103,7 +1114,7 @@ static void print_cable_info(struct snd_info_entry *entry,
mutex_unlock(&loopback->cable_lock);
}
-static int __devinit loopback_proc_new(struct loopback *loopback, int cidx)
+static int loopback_proc_new(struct loopback *loopback, int cidx)
{
char name[32];
struct snd_info_entry *entry;
@@ -1124,15 +1135,15 @@ static int __devinit loopback_proc_new(struct loopback *loopback, int cidx)
#endif
-static int __devinit loopback_probe(struct platform_device *devptr)
+static int loopback_probe(struct platform_device *devptr)
{
struct snd_card *card;
struct loopback *loopback;
int dev = devptr->id;
int err;
- err = snd_card_create(index[dev], id[dev], THIS_MODULE,
- sizeof(struct loopback), &card);
+ err = snd_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE,
+ sizeof(struct loopback), &card);
if (err < 0)
return err;
loopback = card->private_data;
@@ -1169,18 +1180,16 @@ static int __devinit loopback_probe(struct platform_device *devptr)
return err;
}
-static int __devexit loopback_remove(struct platform_device *devptr)
+static int loopback_remove(struct platform_device *devptr)
{
snd_card_free(platform_get_drvdata(devptr));
- platform_set_drvdata(devptr, NULL);
return 0;
}
-#ifdef CONFIG_PM
-static int loopback_suspend(struct platform_device *pdev,
- pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int loopback_suspend(struct device *pdev)
{
- struct snd_card *card = platform_get_drvdata(pdev);
+ struct snd_card *card = dev_get_drvdata(pdev);
struct loopback *loopback = card->private_data;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
@@ -1190,26 +1199,29 @@ static int loopback_suspend(struct platform_device *pdev,
return 0;
}
-static int loopback_resume(struct platform_device *pdev)
+static int loopback_resume(struct device *pdev)
{
- struct snd_card *card = platform_get_drvdata(pdev);
+ struct snd_card *card = dev_get_drvdata(pdev);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
+
+static SIMPLE_DEV_PM_OPS(loopback_pm, loopback_suspend, loopback_resume);
+#define LOOPBACK_PM_OPS &loopback_pm
+#else
+#define LOOPBACK_PM_OPS NULL
#endif
#define SND_LOOPBACK_DRIVER "snd_aloop"
static struct platform_driver loopback_driver = {
.probe = loopback_probe,
- .remove = __devexit_p(loopback_remove),
-#ifdef CONFIG_PM
- .suspend = loopback_suspend,
- .resume = loopback_resume,
-#endif
+ .remove = loopback_remove,
.driver = {
- .name = SND_LOOPBACK_DRIVER
+ .name = SND_LOOPBACK_DRIVER,
+ .owner = THIS_MODULE,
+ .pm = LOOPBACK_PM_OPS,
},
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 13:11:24 +0000