@@ -61,6 +61,9 @@
#define DAVINCI_MCBSP_SPCR_RRST (1 << 0)
#define DAVINCI_MCBSP_SPCR_RINTM(v) ((v) << 4)
+#define DAVINCI_MCBSP_SPCR_RJUST(v) ((v) << 13)
+#define DAVINCI_MCBSP_SPCR_RJUST_Z_LE DAVINCI_MCBSP_SPCR_RJUST(0)
+#define DAVINCI_MCBSP_SPCR_RJUST_S_LE DAVINCI_MCBSP_SPCR_RJUST(1)
#define DAVINCI_MCBSP_SPCR_XRST (1 << 16)
#define DAVINCI_MCBSP_SPCR_XINTM(v) ((v) << 20)
#define DAVINCI_MCBSP_SPCR_GRST (1 << 22)
@@ -107,15 +110,10 @@ enum {
DAVINCI_MCBSP_WORD_32,
};
-static const unsigned char data_type[SNDRV_PCM_FORMAT_S32_LE + 1] = {
- [SNDRV_PCM_FORMAT_S8] = 1,
- [SNDRV_PCM_FORMAT_S16_LE] = 2,
- [SNDRV_PCM_FORMAT_S32_LE] = 4,
-};
-
static const unsigned char asp_word_length[SNDRV_PCM_FORMAT_S32_LE + 1] = {
[SNDRV_PCM_FORMAT_S8] = DAVINCI_MCBSP_WORD_8,
[SNDRV_PCM_FORMAT_S16_LE] = DAVINCI_MCBSP_WORD_16,
+ [SNDRV_PCM_FORMAT_S24_LE] = DAVINCI_MCBSP_WORD_24,
[SNDRV_PCM_FORMAT_S32_LE] = DAVINCI_MCBSP_WORD_32,
};
@@ -467,8 +465,23 @@ static int davinci_i2s_hw_params(struct snd_pcm_substream *substream,
snd_pcm_format_t fmt;
unsigned element_cnt = 1;
- /* general line settings */
spcr = davinci_mcbsp_read_reg(dev, DAVINCI_MCBSP_SPCR_REG);
+
+ /* Determine xfer data type */
+ fmt = params_format(params);
+ switch (fmt) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ case SNDRV_PCM_FORMAT_S32_LE:
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ spcr |= DAVINCI_MCBSP_SPCR_RJUST_S_LE;
+ break;
+ default:
+ dev_warn(dev->dev, "davinci-i2s: unsupported PCM format\n");
+ return -EINVAL;
+ }
+
+ /* general line settings */
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
spcr |= DAVINCI_MCBSP_SPCR_RINTM(3);
davinci_mcbsp_write_reg(dev, DAVINCI_MCBSP_SPCR_REG, spcr);
@@ -566,12 +579,6 @@ static int davinci_i2s_hw_params(struct snd_pcm_substream *substream,
rcr |= DAVINCI_MCBSP_RCR_RDATDLY(1);
xcr |= DAVINCI_MCBSP_XCR_XDATDLY(1);
}
- /* Determine xfer data type */
- fmt = params_format(params);
- if ((fmt > SNDRV_PCM_FORMAT_S32_LE) || !data_type[fmt]) {
- printk(KERN_WARNING "davinci-i2s: unsupported PCM format\n");
- return -EINVAL;
- }
if (params_channels(params) == 2) {
element_cnt = 2;
@@ -710,6 +717,7 @@ static void davinci_i2s_shutdown(struct snd_pcm_substream *substream,
#define DAVINCI_I2S_RATES SNDRV_PCM_RATE_8000_96000
#define DAVINCI_I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE | \
SNDRV_PCM_FMTBIT_S32_LE)
static int davinci_i2s_dai_probe(struct snd_soc_dai *dai)
S24_LE is supported by McBSP but not by the driver. Add S24_LE to driver's supported formats. Using it enables the sign extension in DRR (Data Receive Register). The other formats are kept with the zero extension in DRR. Remove data_type table as it is no longer used. Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com> --- sound/soc/ti/davinci-i2s.c | 34 +++++++++++++++++++++------------- 1 file changed, 21 insertions(+), 13 deletions(-)