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authorTakashi Iwai <tiwai@suse.de>2005-11-17 10:20:23 +0100
committerJaroslav Kysela <perex@suse.cz>2006-01-03 12:16:34 +0100
commitc8eb6ba16a5803fab9cc0d1d0dd04a75bf91b6d5 (patch)
tree801aebfd89e30f0f4492f8d62b8c227f948e26e2 /sound/drivers
parent[ALSA] Use standard bitmap functions (diff)
downloadlinux-dev-c8eb6ba16a5803fab9cc0d1d0dd04a75bf91b6d5.tar.xz
linux-dev-c8eb6ba16a5803fab9cc0d1d0dd04a75bf91b6d5.zip
[ALSA] snd-dummy - Code clean-up
Modules: Generic drivers Clean up snd-dummy driver code. - Make common PCM callbacks - Simplify open callback - Remove unnecessary irqsave in control callbacks Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/drivers')
-rw-r--r--sound/drivers/dummy.c126
1 files changed, 47 insertions, 79 deletions
diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
index 64ef7f62851d..8dfe5d49eafc 100644
--- a/sound/drivers/dummy.c
+++ b/sound/drivers/dummy.c
@@ -172,47 +172,33 @@ typedef struct snd_card_dummy_pcm {
static snd_card_t *snd_dummy_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
-static void snd_card_dummy_pcm_timer_start(snd_pcm_substream_t * substream)
+static inline void snd_card_dummy_pcm_timer_start(snd_card_dummy_pcm_t *dpcm)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
- snd_card_dummy_pcm_t *dpcm = runtime->private_data;
-
dpcm->timer.expires = 1 + jiffies;
add_timer(&dpcm->timer);
}
-static void snd_card_dummy_pcm_timer_stop(snd_pcm_substream_t * substream)
+static inline void snd_card_dummy_pcm_timer_stop(snd_card_dummy_pcm_t *dpcm)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
- snd_card_dummy_pcm_t *dpcm = runtime->private_data;
-
del_timer(&dpcm->timer);
}
-static int snd_card_dummy_playback_trigger(snd_pcm_substream_t * substream,
- int cmd)
+static int snd_card_dummy_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
{
- if (cmd == SNDRV_PCM_TRIGGER_START) {
- snd_card_dummy_pcm_timer_start(substream);
- } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
- snd_card_dummy_pcm_timer_stop(substream);
- } else {
- return -EINVAL;
- }
- return 0;
-}
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ snd_dummy_card_pcm_t *dpcm = runtime->private_data;
+ int err = 0;
-static int snd_card_dummy_capture_trigger(snd_pcm_substream_t * substream,
- int cmd)
-{
+ spin_lock(&dpcm->lock);
if (cmd == SNDRV_PCM_TRIGGER_START) {
- snd_card_dummy_pcm_timer_start(substream);
+ snd_card_dummy_pcm_timer_start(dpcm);
} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
- snd_card_dummy_pcm_timer_stop(substream);
+ snd_card_dummy_pcm_timer_stop(dpcm);
} else {
- return -EINVAL;
+ err = -EINVAL;
}
- return 0;
+ spin_unlock(&dpcm->lock);
+ return err;
}
static int snd_card_dummy_pcm_prepare(snd_pcm_substream_t * substream)
@@ -235,42 +221,26 @@ static int snd_card_dummy_pcm_prepare(snd_pcm_substream_t * substream)
return 0;
}
-static int snd_card_dummy_playback_prepare(snd_pcm_substream_t * substream)
-{
- return snd_card_dummy_pcm_prepare(substream);
-}
-
-static int snd_card_dummy_capture_prepare(snd_pcm_substream_t * substream)
-{
- return snd_card_dummy_pcm_prepare(substream);
-}
-
static void snd_card_dummy_pcm_timer_function(unsigned long data)
{
snd_card_dummy_pcm_t *dpcm = (snd_card_dummy_pcm_t *)data;
+ spin_lock(&dpcm->lock);
dpcm->timer.expires = 1 + jiffies;
add_timer(&dpcm->timer);
- spin_lock_irq(&dpcm->lock);
dpcm->pcm_irq_pos += dpcm->pcm_jiffie;
dpcm->pcm_buf_pos += dpcm->pcm_jiffie;
dpcm->pcm_buf_pos %= dpcm->pcm_size;
if (dpcm->pcm_irq_pos >= dpcm->pcm_count) {
dpcm->pcm_irq_pos %= dpcm->pcm_count;
+ spin_unlock(&dpcm->lock);
snd_pcm_period_elapsed(dpcm->substream);
+ spin_lock(&dpcm->lock);
}
- spin_unlock_irq(&dpcm->lock);
+ spin_unlock(&dpcm->lock);
}
-static snd_pcm_uframes_t snd_card_dummy_playback_pointer(snd_pcm_substream_t * substream)
-{
- snd_pcm_runtime_t *runtime = substream->runtime;
- snd_card_dummy_pcm_t *dpcm = runtime->private_data;
-
- return bytes_to_frames(runtime, dpcm->pcm_buf_pos);
-}
-
-static snd_pcm_uframes_t snd_card_dummy_capture_pointer(snd_pcm_substream_t * substream)
+static snd_pcm_uframes_t snd_card_dummy_pcm_pointer(snd_pcm_substream_t * substream)
{
snd_pcm_runtime_t *runtime = substream->runtime;
snd_card_dummy_pcm_t *dpcm = runtime->private_data;
@@ -316,8 +286,7 @@ static snd_pcm_hardware_t snd_card_dummy_capture =
static void snd_card_dummy_runtime_free(snd_pcm_runtime_t *runtime)
{
- snd_card_dummy_pcm_t *dpcm = runtime->private_data;
- kfree(dpcm);
+ kfree(runtime->private_data);
}
static int snd_card_dummy_hw_params(snd_pcm_substream_t * substream,
@@ -331,20 +300,29 @@ static int snd_card_dummy_hw_free(snd_pcm_substream_t * substream)
return snd_pcm_lib_free_pages(substream);
}
-static int snd_card_dummy_playback_open(snd_pcm_substream_t * substream)
+static snd_card_dummy_pcm_t *new_pcm_stream(snd_pcm_substream_t *substream)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
snd_card_dummy_pcm_t *dpcm;
- int err;
dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
- if (dpcm == NULL)
- return -ENOMEM;
+ if (! dpcm)
+ return dpcm;
init_timer(&dpcm->timer);
dpcm->timer.data = (unsigned long) dpcm;
dpcm->timer.function = snd_card_dummy_pcm_timer_function;
spin_lock_init(&dpcm->lock);
dpcm->substream = substream;
+ return dpcm;
+}
+
+static int snd_card_dummy_playback_open(snd_pcm_substream_t * substream)
+{
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ snd_card_dummy_pcm_t *dpcm;
+ int err;
+
+ if ((dpcm = new_pcm_stream(substream)) == NULL)
+ return -ENOMEM;
runtime->private_data = dpcm;
runtime->private_free = snd_card_dummy_runtime_free;
runtime->hw = snd_card_dummy_playback;
@@ -368,14 +346,8 @@ static int snd_card_dummy_capture_open(snd_pcm_substream_t * substream)
snd_card_dummy_pcm_t *dpcm;
int err;
- dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
- if (dpcm == NULL)
+ if ((dpcm = new_pcm_stream(substream)) == NULL)
return -ENOMEM;
- init_timer(&dpcm->timer);
- dpcm->timer.data = (unsigned long) dpcm;
- dpcm->timer.function = snd_card_dummy_pcm_timer_function;
- spin_lock_init(&dpcm->lock);
- dpcm->substream = substream;
runtime->private_data = dpcm;
runtime->private_free = snd_card_dummy_runtime_free;
runtime->hw = snd_card_dummy_capture;
@@ -409,9 +381,9 @@ static snd_pcm_ops_t snd_card_dummy_playback_ops = {
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_card_dummy_hw_params,
.hw_free = snd_card_dummy_hw_free,
- .prepare = snd_card_dummy_playback_prepare,
- .trigger = snd_card_dummy_playback_trigger,
- .pointer = snd_card_dummy_playback_pointer,
+ .prepare = snd_card_dummy_pcm_prepare,
+ .trigger = snd_card_dummy_pcm_trigger,
+ .pointer = snd_card_dummy_pcm_pointer,
};
static snd_pcm_ops_t snd_card_dummy_capture_ops = {
@@ -420,9 +392,9 @@ static snd_pcm_ops_t snd_card_dummy_capture_ops = {
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_card_dummy_hw_params,
.hw_free = snd_card_dummy_hw_free,
- .prepare = snd_card_dummy_capture_prepare,
- .trigger = snd_card_dummy_capture_trigger,
- .pointer = snd_card_dummy_capture_pointer,
+ .prepare = snd_card_dummy_pcm_prepare,
+ .trigger = snd_card_dummy_pcm_trigger,
+ .pointer = snd_card_dummy_pcm_pointer,
};
static int __init snd_card_dummy_pcm(snd_card_dummy_t *dummy, int device, int substreams)
@@ -461,20 +433,18 @@ static int snd_dummy_volume_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t
static int snd_dummy_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
snd_card_dummy_t *dummy = snd_kcontrol_chip(kcontrol);
- unsigned long flags;
int addr = kcontrol->private_value;
- spin_lock_irqsave(&dummy->mixer_lock, flags);
+ spin_lock_irq(&dummy->mixer_lock);
ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0];
ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1];
- spin_unlock_irqrestore(&dummy->mixer_lock, flags);
+ spin_unlock_irq(&dummy->mixer_lock);
return 0;
}
static int snd_dummy_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
snd_card_dummy_t *dummy = snd_kcontrol_chip(kcontrol);
- unsigned long flags;
int change, addr = kcontrol->private_value;
int left, right;
@@ -488,12 +458,12 @@ static int snd_dummy_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t
right = -50;
if (right > 100)
right = 100;
- spin_lock_irqsave(&dummy->mixer_lock, flags);
+ spin_lock_irq(&dummy->mixer_lock);
change = dummy->mixer_volume[addr][0] != left ||
dummy->mixer_volume[addr][1] != right;
dummy->mixer_volume[addr][0] = left;
dummy->mixer_volume[addr][1] = right;
- spin_unlock_irqrestore(&dummy->mixer_lock, flags);
+ spin_unlock_irq(&dummy->mixer_lock);
return change;
}
@@ -515,31 +485,29 @@ static int snd_dummy_capsrc_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t
static int snd_dummy_capsrc_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
snd_card_dummy_t *dummy = snd_kcontrol_chip(kcontrol);
- unsigned long flags;
int addr = kcontrol->private_value;
- spin_lock_irqsave(&dummy->mixer_lock, flags);
+ spin_lock_irq(&dummy->mixer_lock);
ucontrol->value.integer.value[0] = dummy->capture_source[addr][0];
ucontrol->value.integer.value[1] = dummy->capture_source[addr][1];
- spin_unlock_irqrestore(&dummy->mixer_lock, flags);
+ spin_unlock_irq(&dummy->mixer_lock);
return 0;
}
static int snd_dummy_capsrc_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
snd_card_dummy_t *dummy = snd_kcontrol_chip(kcontrol);
- unsigned long flags;
int change, addr = kcontrol->private_value;
int left, right;
left = ucontrol->value.integer.value[0] & 1;
right = ucontrol->value.integer.value[1] & 1;
- spin_lock_irqsave(&dummy->mixer_lock, flags);
+ spin_lock_irq(&dummy->mixer_lock);
change = dummy->capture_source[addr][0] != left &&
dummy->capture_source[addr][1] != right;
dummy->capture_source[addr][0] = left;
dummy->capture_source[addr][1] = right;
- spin_unlock_irqrestore(&dummy->mixer_lock, flags);
+ spin_unlock_irq(&dummy->mixer_lock);
return change;
}