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[ALSA] ASoC Samsung S3c24xx updates - audio DMA cleanup

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This patch cleans up the audio DMA for the Samsung S3C24xx platform.

Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Graeme Gregory 2007-04-17 12:35:18 +02:00 committed by Jaroslav Kysela
parent c45e20eb21
commit 7f1bc26e7d
2 changed files with 27 additions and 22 deletions
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42
sound/soc/s3c24xx/s3c24xx-pcm.c
View file

@ -89,7 +89,7 @@ static void s3c24xx_pcm_enqueue(struct snd_pcm_substream *substream)
DBG("Entered %s\n", __FUNCTION__);
while ( prtd->dma_loaded < prtd->dma_limit) {
while (prtd->dma_loaded < prtd->dma_limit) {
unsigned long len = prtd->dma_period;
DBG("dma_loaded: %d\n",prtd->dma_loaded);
@ -100,7 +100,8 @@ static void s3c24xx_pcm_enqueue(struct snd_pcm_substream *substream)
__FUNCTION__, len);
}
ret = s3c2410_dma_enqueue(prtd->params->channel, substream, pos, len);
ret = s3c2410_dma_enqueue(prtd->params->channel,
substream, pos, len);
if (ret == 0) {
prtd->dma_loaded++;
@ -115,17 +116,19 @@ static void s3c24xx_pcm_enqueue(struct snd_pcm_substream *substream)
}
static void s3c24xx_audio_buffdone(struct s3c2410_dma_chan *channel,
void *dev_id, int size,
enum s3c2410_dma_buffresult result)
void *dev_id, int size,
enum s3c2410_dma_buffresult result)
{
struct snd_pcm_substream *substream = dev_id;
struct s3c24xx_runtime_data *prtd = substream->runtime->private_data;
struct s3c24xx_runtime_data *prtd;
DBG("Entered %s\n", __FUNCTION__);
if (result == S3C2410_RES_ABORT || result == S3C2410_RES_ERR)
return;
prtd = substream->runtime->private_data;
if (substream)
snd_pcm_period_elapsed(substream);
@ -173,18 +176,22 @@ static int s3c24xx_pcm_hw_params(struct snd_pcm_substream *substream,
* sync to pclk, half-word transfers to the IIS-FIFO. */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
s3c2410_dma_devconfig(prtd->params->channel,
S3C2410_DMASRC_MEM, S3C2410_DISRCC_INC |
S3C2410_DISRCC_APB, prtd->params->dma_addr);
S3C2410_DMASRC_MEM, S3C2410_DISRCC_INC |
S3C2410_DISRCC_APB, prtd->params->dma_addr);
s3c2410_dma_config(prtd->params->channel,
2, S3C2410_DCON_SYNC_PCLK | S3C2410_DCON_HANDSHAKE);
prtd->params->dma_size,
S3C2410_DCON_SYNC_PCLK |
S3C2410_DCON_HANDSHAKE);
} else {
s3c2410_dma_config(prtd->params->channel,
2, S3C2410_DCON_HANDSHAKE | S3C2410_DCON_SYNC_PCLK);
prtd->params->dma_size,
S3C2410_DCON_HANDSHAKE |
S3C2410_DCON_SYNC_PCLK);
s3c2410_dma_devconfig(prtd->params->channel,
S3C2410_DMASRC_HW, 0x3,
prtd->params->dma_addr);
S3C2410_DMASRC_HW, 0x3,
prtd->params->dma_addr);
}
s3c2410_dma_set_buffdone_fn(prtd->params->channel,
@ -215,7 +222,7 @@ static int s3c24xx_pcm_hw_free(struct snd_pcm_substream *substream)
/* TODO - do we need to ensure DMA flushed */
snd_pcm_set_runtime_buffer(substream, NULL);
if(prtd->params) {
if (prtd->params) {
s3c2410_dma_free(prtd->params->channel, prtd->params->client);
prtd->params = NULL;
}
@ -281,7 +288,8 @@ static int s3c24xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
return ret;
}
static snd_pcm_uframes_t s3c24xx_pcm_pointer(struct snd_pcm_substream *substream)
static snd_pcm_uframes_t
s3c24xx_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct s3c24xx_runtime_data *prtd = runtime->private_data;
@ -321,8 +329,6 @@ static int s3c24xx_pcm_open(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime = substream->runtime;
struct s3c24xx_runtime_data *prtd;
int ret;
DBG("Entered %s\n", __FUNCTION__);
snd_soc_set_runtime_hwparams(substream, &s3c24xx_pcm_hardware);
@ -342,7 +348,7 @@ static int s3c24xx_pcm_close(struct snd_pcm_substream *substream)
DBG("Entered %s\n", __FUNCTION__);
if(prtd)
if (prtd)
kfree(prtd);
else
DBG("s3c24xx_pcm_close called with prtd == NULL\n");
@ -419,8 +425,8 @@ static void s3c24xx_pcm_free_dma_buffers(struct snd_pcm *pcm)
static u64 s3c24xx_pcm_dmamask = DMA_32BIT_MASK;
static int s3c24xx_pcm_new(struct snd_card *card, struct snd_soc_codec_dai *dai,
struct snd_pcm *pcm)
static int s3c24xx_pcm_new(struct snd_card *card,
struct snd_soc_codec_dai *dai, struct snd_pcm *pcm)
{
int ret = 0;

7
sound/soc/s3c24xx/s3c24xx-pcm.h
View file

@ -16,15 +16,14 @@
#define ST_OPENED (1<<1)
struct s3c24xx_pcm_dma_params {
struct s3c2410_dma_client *client; /* stream identifier */
int channel; /* Channel ID */
struct s3c2410_dma_client *client; /* stream identifier */
int channel; /* Channel ID */
dma_addr_t dma_addr;
int dma_size; /* Size of the DMA transfer */
};
#define S3C24XX_DAI_I2S 0
extern struct snd_soc_cpu_dai s3c24xx_i2s_dai;
/* platform data */
extern struct snd_soc_platform s3c24xx_soc_platform;
extern struct snd_ac97_bus_ops s3c24xx_ac97_ops;