Commit a8f5d0a5 authored by Andrew Johnson's avatar Andrew Johnson Committed by Jaroslav Kysela
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[ALSA] soc - ASoC 0.13 pxa2xx DMA

This patch updates the pxa2xx I2S driver to the new API in ASoC 0.13.
o Added check in hw_params to detect buffer less pcms (i.e. BT <-->
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: default avatarAndrew Johnson <>
Signed-off-by: default avatarLiam Girdwood <>
Signed-off-by: default avatarTakashi Iwai <>
Signed-off-by: default avatarJaroslav Kysela <>
parent 596ce32b
......@@ -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;
......@@ -28,21 +28,7 @@ struct pxa2xx_gpio {
u32 frm;
/* pxa2xx DAI ID's */
#define PXA2XX_DAI_AC97_HIFI 0
#define PXA2XX_DAI_AC97_AUX 1
#define PXA2XX_DAI_AC97_MIC 2
#define PXA2XX_DAI_I2S 0
#define PXA2XX_DAI_SSP1 0
#define PXA2XX_DAI_SSP2 1
#define PXA2XX_DAI_SSP3 2
extern struct snd_soc_cpu_dai pxa_ac97_dai[3];
extern struct snd_soc_cpu_dai pxa_i2s_dai;
extern struct snd_soc_cpu_dai pxa_ssp_dai[3];
/* platform data */
extern struct snd_soc_platform pxa2xx_soc_platform;
extern struct snd_ac97_bus_ops pxa2xx_ac97_ops;
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