diff options
| author | Andrew Johnson <ajohnson@intrinsyc.com> | 2007-02-02 19:21:50 +0300 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2007-02-09 11:03:47 +0300 |
| commit | a8f5d0a5d02cda0183c6e68d6a66d4c6641149a9 (patch) | |
| tree | 440b21b913e3c3c14a7c3fa7b50232b81b58e711 /sound/soc/pxa/pxa2xx-pcm.c | |
| parent | 596ce32b74dccf53ef59cc9ba2e95a2a34ba921c (diff) | |
| download | linux-a8f5d0a5d02cda0183c6e68d6a66d4c6641149a9.tar.xz | |
[ALSA] soc - ASoC 0.13 pxa2xx DMA
This patch updates the pxa2xx I2S driver to the new API in ASoC 0.13.
Changes:-
o Added check in hw_params to detect buffer less pcms (i.e. BT <-->
codec).
o Updated structures to new API
o Removed DAI's and ac97 ops from PCM header.
o Integer hardware constraint added for periods.
Signed-off-by: Andrew Johnson <ajohnson@intrinsyc.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>
Diffstat (limited to 'sound/soc/pxa/pxa2xx-pcm.c')
| -rw-r--r-- | sound/soc/pxa/pxa2xx-pcm.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sound/soc/pxa/pxa2xx-pcm.c b/sound/soc/pxa/pxa2xx-pcm.c index ff32f892287e..35e8fa3a469c 100644 --- a/sound/soc/pxa/pxa2xx-pcm.c +++ b/sound/soc/pxa/pxa2xx-pcm.c @@ -76,13 +76,18 @@ static int pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_runtime *runtime = substream->runtime; struct pxa2xx_runtime_data *prtd = runtime->private_data; struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct pxa2xx_pcm_dma_params *dma = rtd->cpu_dai->dma_data; + struct pxa2xx_pcm_dma_params *dma = rtd->dai->cpu_dai->dma_data; size_t totsize = params_buffer_bytes(params); size_t period = params_period_bytes(params); pxa_dma_desc *dma_desc; dma_addr_t dma_buff_phys, next_desc_phys; int ret; + /* return if this is a bufferless transfer e.g. + * codec <--> BT codec or GSM modem -- lg FIXME */ + if (!dma) + return 0; + /* this may get called several times by oss emulation * with different params */ if (prtd->params == NULL) { @@ -227,6 +232,10 @@ static int pxa2xx_pcm_open(struct snd_pcm_substream *substream) if (ret) goto out; + ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + if (ret < 0) + goto out; + prtd = kzalloc(sizeof(struct pxa2xx_runtime_data), GFP_KERNEL); if (prtd == NULL) { ret = -ENOMEM; |