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Diffstat (limited to 'sound/core/pcm_lib.c')
-rw-r--r--sound/core/pcm_lib.c156
1 files changed, 55 insertions, 101 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 51eeea9088de..ae030c5eb7c6 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1994,12 +1994,12 @@ static int wait_for_avail(struct snd_pcm_substream *substream,
}
typedef int (*transfer_f)(struct snd_pcm_substream *substream, unsigned int hwoff,
- unsigned long data, unsigned int off,
+ void *data, unsigned int off,
snd_pcm_uframes_t size);
static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream,
unsigned int hwoff,
- unsigned long data, unsigned int off,
+ void *data, unsigned int off,
snd_pcm_uframes_t frames)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -2021,7 +2021,7 @@ static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream,
static int snd_pcm_lib_writev_transfer(struct snd_pcm_substream *substream,
unsigned int hwoff,
- unsigned long data, unsigned int off,
+ void *data, unsigned int off,
snd_pcm_uframes_t frames)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -2098,21 +2098,39 @@ static int pcm_accessible_state(struct snd_pcm_runtime *runtime)
}
}
-static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
- unsigned long data,
- snd_pcm_uframes_t size,
- int nonblock,
- transfer_f transfer)
+snd_pcm_sframes_t __snd_pcm_lib_write(struct snd_pcm_substream *substream,
+ void *data, bool interleaved,
+ snd_pcm_uframes_t size)
{
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t xfer = 0;
snd_pcm_uframes_t offset = 0;
snd_pcm_uframes_t avail;
- int err = 0;
+ transfer_f transfer;
+ bool nonblock;
+ int err;
+
+ err = pcm_sanity_check(substream);
+ if (err < 0)
+ return err;
+ runtime = substream->runtime;
+
+ if (interleaved) {
+ if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED &&
+ runtime->channels > 1)
+ return -EINVAL;
+ transfer = snd_pcm_lib_write_transfer;
+ } else {
+ if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
+ return -EINVAL;
+ transfer = snd_pcm_lib_writev_transfer;
+ }
if (size == 0)
return 0;
+ nonblock = !!(substream->f_flags & O_NONBLOCK);
+
snd_pcm_stream_lock_irq(substream);
err = pcm_accessible_state(runtime);
if (err < 0)
@@ -2180,53 +2198,11 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
snd_pcm_stream_unlock_irq(substream);
return xfer > 0 ? (snd_pcm_sframes_t)xfer : err;
}
-
-snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, const void __user *buf, snd_pcm_uframes_t size)
-{
- struct snd_pcm_runtime *runtime;
- int nonblock;
- int err;
-
- err = pcm_sanity_check(substream);
- if (err < 0)
- return err;
- runtime = substream->runtime;
- nonblock = !!(substream->f_flags & O_NONBLOCK);
-
- if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED &&
- runtime->channels > 1)
- return -EINVAL;
- return snd_pcm_lib_write1(substream, (unsigned long)buf, size, nonblock,
- snd_pcm_lib_write_transfer);
-}
-
-EXPORT_SYMBOL(snd_pcm_lib_write);
-
-snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream,
- void __user **bufs,
- snd_pcm_uframes_t frames)
-{
- struct snd_pcm_runtime *runtime;
- int nonblock;
- int err;
-
- err = pcm_sanity_check(substream);
- if (err < 0)
- return err;
- runtime = substream->runtime;
- nonblock = !!(substream->f_flags & O_NONBLOCK);
-
- if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
- return -EINVAL;
- return snd_pcm_lib_write1(substream, (unsigned long)bufs, frames,
- nonblock, snd_pcm_lib_writev_transfer);
-}
-
-EXPORT_SYMBOL(snd_pcm_lib_writev);
+EXPORT_SYMBOL(__snd_pcm_lib_write);
static int snd_pcm_lib_read_transfer(struct snd_pcm_substream *substream,
unsigned int hwoff,
- unsigned long data, unsigned int off,
+ void *data, unsigned int off,
snd_pcm_uframes_t frames)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -2248,7 +2224,7 @@ static int snd_pcm_lib_read_transfer(struct snd_pcm_substream *substream,
static int snd_pcm_lib_readv_transfer(struct snd_pcm_substream *substream,
unsigned int hwoff,
- unsigned long data, unsigned int off,
+ void *data, unsigned int off,
snd_pcm_uframes_t frames)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -2286,21 +2262,39 @@ static int snd_pcm_lib_readv_transfer(struct snd_pcm_substream *substream,
return 0;
}
-static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
- unsigned long data,
- snd_pcm_uframes_t size,
- int nonblock,
- transfer_f transfer)
+snd_pcm_sframes_t __snd_pcm_lib_read(struct snd_pcm_substream *substream,
+ void *data, bool interleaved,
+ snd_pcm_uframes_t size)
{
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t xfer = 0;
snd_pcm_uframes_t offset = 0;
snd_pcm_uframes_t avail;
- int err = 0;
+ transfer_f transfer;
+ bool nonblock;
+ int err;
+
+ err = pcm_sanity_check(substream);
+ if (err < 0)
+ return err;
+ runtime = substream->runtime;
+
+ if (interleaved) {
+ if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED &&
+ runtime->channels > 1)
+ return -EINVAL;
+ transfer = snd_pcm_lib_read_transfer;
+ } else {
+ if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
+ return -EINVAL;
+ transfer = snd_pcm_lib_readv_transfer;
+ }
if (size == 0)
return 0;
+ nonblock = !!(substream->f_flags & O_NONBLOCK);
+
snd_pcm_stream_lock_irq(substream);
err = pcm_accessible_state(runtime);
if (err < 0)
@@ -2375,47 +2369,7 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
snd_pcm_stream_unlock_irq(substream);
return xfer > 0 ? (snd_pcm_sframes_t)xfer : err;
}
-
-snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, void __user *buf, snd_pcm_uframes_t size)
-{
- struct snd_pcm_runtime *runtime;
- int nonblock;
- int err;
-
- err = pcm_sanity_check(substream);
- if (err < 0)
- return err;
- runtime = substream->runtime;
- nonblock = !!(substream->f_flags & O_NONBLOCK);
- if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED)
- return -EINVAL;
- return snd_pcm_lib_read1(substream, (unsigned long)buf, size, nonblock, snd_pcm_lib_read_transfer);
-}
-
-EXPORT_SYMBOL(snd_pcm_lib_read);
-
-snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream,
- void __user **bufs,
- snd_pcm_uframes_t frames)
-{
- struct snd_pcm_runtime *runtime;
- int nonblock;
- int err;
-
- err = pcm_sanity_check(substream);
- if (err < 0)
- return err;
- runtime = substream->runtime;
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
- return -EBADFD;
-
- nonblock = !!(substream->f_flags & O_NONBLOCK);
- if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
- return -EINVAL;
- return snd_pcm_lib_read1(substream, (unsigned long)bufs, frames, nonblock, snd_pcm_lib_readv_transfer);
-}
-
-EXPORT_SYMBOL(snd_pcm_lib_readv);
+EXPORT_SYMBOL(__snd_pcm_lib_read);
/*
* standard channel mapping helpers
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-23 12:29:16 +0000