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-rw-r--r--sound/soc/omap/omap-mcbsp.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index 0a063a98a66..8485a8a9d0f 100644
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -43,6 +43,7 @@
struct omap_mcbsp_data {
unsigned int bus_id;
struct omap_mcbsp_reg_cfg regs;
+ unsigned int fmt;
/*
* Flags indicating is the bus already activated and configured by
* another substream
@@ -200,6 +201,7 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream,
struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs;
int dma, bus_id = mcbsp_data->bus_id, id = cpu_dai->id;
+ int wlen;
unsigned long port;
if (cpu_class_is_omap1()) {
@@ -244,19 +246,29 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream,
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
/* Set word lengths */
+ wlen = 16;
regs->rcr2 |= RWDLEN2(OMAP_MCBSP_WORD_16);
regs->rcr1 |= RWDLEN1(OMAP_MCBSP_WORD_16);
regs->xcr2 |= XWDLEN2(OMAP_MCBSP_WORD_16);
regs->xcr1 |= XWDLEN1(OMAP_MCBSP_WORD_16);
- /* Set FS period and length in terms of bit clock periods */
- regs->srgr2 |= FPER(16 * 2 - 1);
- regs->srgr1 |= FWID(16 - 1);
break;
default:
/* Unsupported PCM format */
return -EINVAL;
}
+ /* Set FS period and length in terms of bit clock periods */
+ switch (mcbsp_data->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ regs->srgr2 |= FPER(wlen * 2 - 1);
+ regs->srgr1 |= FWID(wlen - 1);
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ regs->srgr2 |= FPER(wlen * 2 - 1);
+ regs->srgr1 |= FWID(wlen * 2 - 2);
+ break;
+ }
+
omap_mcbsp_config(bus_id, &mcbsp_data->regs);
mcbsp_data->configured = 1;
@@ -276,6 +288,7 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai,
if (mcbsp_data->configured)
return 0;
+ mcbsp_data->fmt = fmt;
memset(regs, 0, sizeof(*regs));
/* Generic McBSP register settings */
regs->spcr2 |= XINTM(3) | FREE;