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ALSA: core: Expand DMA buffer information 

Update DMA buffer definition for snd_compr_runtime so it is represented
similarly as in snd_pcm_runtime. While at it, modify
snd_compr_set_runtime_buffer to account for newly added members.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200218143924.10565-2-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cezary Rojewski 2020-02-18 15:39:16 +01:00 committed by Mark Brown
parent a4877a6fb2
commit 386dd54b3a
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 25 additions and 8 deletions
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29
include/sound/compress_driver.h
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@ -23,7 +23,6 @@ struct snd_compr_ops;
* struct snd_compr_runtime: runtime stream description
* @state: stream state
* @ops: pointer to DSP callbacks
* @dma_buffer_p: runtime dma buffer pointer
* @buffer: pointer to kernel buffer, valid only when not in mmap mode or
* DSP doesn't implement copy
* @buffer_size: size of the above buffer
@ -34,11 +33,14 @@ struct snd_compr_ops;
* @total_bytes_transferred: cumulative bytes transferred by offload DSP
* @sleep: poll sleep
* @private_data: driver private data pointer
* @dma_area: virtual buffer address
* @dma_addr: physical buffer address (not accessible from main CPU)
* @dma_bytes: size of DMA area
* @dma_buffer_p: runtime dma buffer pointer
*/
struct snd_compr_runtime {
snd_pcm_state_t state;
struct snd_compr_ops *ops;
struct snd_dma_buffer *dma_buffer_p;
void *buffer;
u64 buffer_size;
u32 fragment_size;
@ -47,6 +49,11 @@ struct snd_compr_runtime {
u64 total_bytes_transferred;
wait_queue_head_t sleep;
void *private_data;
unsigned char *dma_area;
dma_addr_t dma_addr;
size_t dma_bytes;
struct snd_dma_buffer *dma_buffer_p;
};
/**
@ -180,19 +187,29 @@ static inline void snd_compr_drain_notify(struct snd_compr_stream *stream)
/**
* snd_compr_set_runtime_buffer - Set the Compress runtime buffer
* @substream: compress substream to set
* @stream: compress stream to set
* @bufp: the buffer information, NULL to clear
*
* Copy the buffer information to runtime buffer when @bufp is non-NULL.
* Otherwise it clears the current buffer information.
*/
static inline void snd_compr_set_runtime_buffer(
struct snd_compr_stream *substream,
static inline void
snd_compr_set_runtime_buffer(struct snd_compr_stream *stream,
struct snd_dma_buffer *bufp)
{
struct snd_compr_runtime *runtime = substream->runtime;
struct snd_compr_runtime *runtime = stream->runtime;
if (bufp) {
runtime->dma_buffer_p = bufp;
runtime->dma_area = bufp->area;
runtime->dma_addr = bufp->addr;
runtime->dma_bytes = bufp->bytes;
} else {
runtime->dma_buffer_p = NULL;
runtime->dma_area = NULL;
runtime->dma_addr = 0;
runtime->dma_bytes = 0;
}
}
int snd_compr_stop_error(struct snd_compr_stream *stream,