*
* the minimum size is snd_minimum_buffer. it should be power of 2.
*/
-static int preallocate_pcm_pages(snd_pcm_substream_t *substream, size_t size)
+static int preallocate_pcm_pages(struct snd_pcm_substream *substream, size_t size)
{
struct snd_dma_buffer *dmab = &substream->dma_buffer;
int err;
/*
* release the preallocated buffer if not yet done.
*/
-static void snd_pcm_lib_preallocate_dma_free(snd_pcm_substream_t *substream)
+static void snd_pcm_lib_preallocate_dma_free(struct snd_pcm_substream *substream)
{
if (substream->dma_buffer.area == NULL)
return;
*
* Returns zero if successful, or a negative error code on failure.
*/
-int snd_pcm_lib_preallocate_free(snd_pcm_substream_t *substream)
+int snd_pcm_lib_preallocate_free(struct snd_pcm_substream *substream)
{
snd_pcm_lib_preallocate_dma_free(substream);
- if (substream->proc_prealloc_entry) {
- snd_info_unregister(substream->proc_prealloc_entry);
- substream->proc_prealloc_entry = NULL;
- }
+#ifdef CONFIG_SND_VERBOSE_PROCFS
+ snd_info_unregister(substream->proc_prealloc_entry);
+ substream->proc_prealloc_entry = NULL;
+#endif
return 0;
}
*
* Returns zero if successful, or a negative error code on failure.
*/
-int snd_pcm_lib_preallocate_free_for_all(snd_pcm_t *pcm)
+int snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm)
{
- snd_pcm_substream_t *substream;
+ struct snd_pcm_substream *substream;
int stream;
for (stream = 0; stream < 2; stream++)
return 0;
}
+EXPORT_SYMBOL(snd_pcm_lib_preallocate_free_for_all);
+
+#ifdef CONFIG_SND_VERBOSE_PROCFS
/*
* read callback for prealloc proc file
*
* prints the current allocated size in kB.
*/
-static void snd_pcm_lib_preallocate_proc_read(snd_info_entry_t *entry,
- snd_info_buffer_t *buffer)
+static void snd_pcm_lib_preallocate_proc_read(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
{
- snd_pcm_substream_t *substream = (snd_pcm_substream_t *)entry->private_data;
+ struct snd_pcm_substream *substream = entry->private_data;
snd_iprintf(buffer, "%lu\n", (unsigned long) substream->dma_buffer.bytes / 1024);
}
*
* accepts the preallocation size in kB.
*/
-static void snd_pcm_lib_preallocate_proc_write(snd_info_entry_t *entry,
- snd_info_buffer_t *buffer)
+static void snd_pcm_lib_preallocate_proc_write(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
{
- snd_pcm_substream_t *substream = (snd_pcm_substream_t *)entry->private_data;
+ struct snd_pcm_substream *substream = entry->private_data;
char line[64], str[64];
size_t size;
struct snd_dma_buffer new_dmab;
}
}
-/*
- * pre-allocate the buffer and create a proc file for the substream
- */
-static int snd_pcm_lib_preallocate_pages1(snd_pcm_substream_t *substream,
- size_t size, size_t max)
+static inline void preallocate_info_init(struct snd_pcm_substream *substream)
{
- snd_info_entry_t *entry;
-
- if (size > 0 && preallocate_dma && substream->number < maximum_substreams)
- preallocate_pcm_pages(substream, size);
+ struct snd_info_entry *entry;
- if (substream->dma_buffer.bytes > 0)
- substream->buffer_bytes_max = substream->dma_buffer.bytes;
- substream->dma_max = max;
if ((entry = snd_info_create_card_entry(substream->pcm->card, "prealloc", substream->proc_root)) != NULL) {
- entry->c.text.read_size = 64;
entry->c.text.read = snd_pcm_lib_preallocate_proc_read;
- entry->c.text.write_size = 64;
entry->c.text.write = snd_pcm_lib_preallocate_proc_write;
entry->mode |= S_IWUSR;
entry->private_data = substream;
}
}
substream->proc_prealloc_entry = entry;
+}
+
+#else /* !CONFIG_SND_VERBOSE_PROCFS */
+#define preallocate_info_init(s)
+#endif /* CONFIG_SND_VERBOSE_PROCFS */
+
+/*
+ * pre-allocate the buffer and create a proc file for the substream
+ */
+static int snd_pcm_lib_preallocate_pages1(struct snd_pcm_substream *substream,
+ size_t size, size_t max)
+{
+
+ if (size > 0 && preallocate_dma && substream->number < maximum_substreams)
+ preallocate_pcm_pages(substream, size);
+
+ if (substream->dma_buffer.bytes > 0)
+ substream->buffer_bytes_max = substream->dma_buffer.bytes;
+ substream->dma_max = max;
+ preallocate_info_init(substream);
return 0;
}
*
* Returns zero if successful, or a negative error code on failure.
*/
-int snd_pcm_lib_preallocate_pages(snd_pcm_substream_t *substream,
+int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream,
int type, struct device *data,
size_t size, size_t max)
{
return snd_pcm_lib_preallocate_pages1(substream, size, max);
}
+EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages);
+
/**
* snd_pcm_lib_preallocate_pages_for_all - pre-allocation for continous memory type (all substreams)
* @pcm: the pcm instance
*
* Returns zero if successful, or a negative error code on failure.
*/
-int snd_pcm_lib_preallocate_pages_for_all(snd_pcm_t *pcm,
+int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm,
int type, void *data,
size_t size, size_t max)
{
- snd_pcm_substream_t *substream;
+ struct snd_pcm_substream *substream;
int stream, err;
for (stream = 0; stream < 2; stream++)
return 0;
}
+EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages_for_all);
+
/**
* snd_pcm_sgbuf_ops_page - get the page struct at the given offset
* @substream: the pcm substream instance
* Returns the page struct at the given buffer offset.
* Used as the page callback of PCM ops.
*/
-struct page *snd_pcm_sgbuf_ops_page(snd_pcm_substream_t *substream, unsigned long offset)
+struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, unsigned long offset)
{
struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
return sgbuf->page_table[idx];
}
+EXPORT_SYMBOL(snd_pcm_sgbuf_ops_page);
+
/**
* snd_pcm_lib_malloc_pages - allocate the DMA buffer
* @substream: the substream to allocate the DMA buffer to
* Returns 1 if the buffer is changed, 0 if not changed, or a negative
* code on failure.
*/
-int snd_pcm_lib_malloc_pages(snd_pcm_substream_t *substream, size_t size)
+int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size)
{
- snd_pcm_runtime_t *runtime;
+ struct snd_pcm_runtime *runtime;
struct snd_dma_buffer *dmab = NULL;
snd_assert(substream->dma_buffer.dev.type != SNDRV_DMA_TYPE_UNKNOWN, return -EINVAL);
}
snd_pcm_lib_free_pages(substream);
}
- if (substream->dma_buffer.area != NULL && substream->dma_buffer.bytes >= size) {
+ if (substream->dma_buffer.area != NULL &&
+ substream->dma_buffer.bytes >= size) {
dmab = &substream->dma_buffer; /* use the pre-allocated buffer */
} else {
dmab = kzalloc(sizeof(*dmab), GFP_KERNEL);
return 1; /* area was changed */
}
+EXPORT_SYMBOL(snd_pcm_lib_malloc_pages);
+
/**
* snd_pcm_lib_free_pages - release the allocated DMA buffer.
* @substream: the substream to release the DMA buffer
*
* Returns zero if successful, or a negative error code on failure.
*/
-int snd_pcm_lib_free_pages(snd_pcm_substream_t *substream)
+int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream)
{
- snd_pcm_runtime_t *runtime;
+ struct snd_pcm_runtime *runtime;
snd_assert(substream != NULL, return -EINVAL);
runtime = substream->runtime;
snd_pcm_set_runtime_buffer(substream, NULL);
return 0;
}
+
+EXPORT_SYMBOL(snd_pcm_lib_free_pages);