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ALSA: x86: Support S32 format 

The hardware has the support for the left-aligned 24bit format in
32bit packet.  This corresponds to S32 format in ALSA.  We need to set
the msbits restriction as well to inform user-space that only MSB
24bit are available.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2017-02-07 13:33:17 +01:00
parent e8de9859e4
commit 85bd8748ca
1 changed files with 19 additions and 9 deletions
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28
sound/x86/intel_hdmi_audio.c
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@ -135,7 +135,8 @@ static const struct snd_pcm_hardware had_pcm_hardware = {
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_NO_PERIOD_WAKEUP),
.formats = SNDRV_PCM_FMTBIT_S24,
.formats = (SNDRV_PCM_FMTBIT_S24_LE |
SNDRV_PCM_FMTBIT_S32_LE),
.rates = SNDRV_PCM_RATE_32000 |
SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_48000 |
@ -249,7 +250,6 @@ static int had_prog_status_reg(struct snd_pcm_substream *substream,
union aud_cfg cfg_val = {.regval = 0};
union aud_ch_status_0 ch_stat0 = {.regval = 0};
union aud_ch_status_1 ch_stat1 = {.regval = 0};
int format;
ch_stat0.regx.lpcm_id = (intelhaddata->aes_bits &
IEC958_AES0_NONAUDIO) >> 1;
@ -289,17 +289,20 @@ static int had_prog_status_reg(struct snd_pcm_substream *substream,
had_write_register(intelhaddata,
AUD_CH_STATUS_0, ch_stat0.regval);
format = substream->runtime->format;
if (format == SNDRV_PCM_FORMAT_S16_LE) {
switch (substream->runtime->format) {
#if 0 /* FIXME: not supported yet */
case SNDRV_PCM_FORMAT_S16_LE:
ch_stat1.regx.max_wrd_len = MAX_SMPL_WIDTH_20;
ch_stat1.regx.wrd_len = SMPL_WIDTH_16BITS;
} else if (format == SNDRV_PCM_FORMAT_S24_LE) {
break;
#endif
case SNDRV_PCM_FORMAT_S24_LE:
case SNDRV_PCM_FORMAT_S32_LE:
ch_stat1.regx.max_wrd_len = MAX_SMPL_WIDTH_24;
ch_stat1.regx.wrd_len = SMPL_WIDTH_24BITS;
} else {
ch_stat1.regx.max_wrd_len = 0;
ch_stat1.regx.wrd_len = 0;
break;
default:
return -EINVAL;
}
had_write_register(intelhaddata,
@ -333,6 +336,9 @@ static int had_init_audio_ctrl(struct snd_pcm_substream *substream,
else
cfg_val.regx.layout = LAYOUT1;
if (substream->runtime->format == SNDRV_PCM_FORMAT_S32_LE)
cfg_val.regx.left_align = 1;
cfg_val.regx.val_bit = 1;
/* fix up the DP bits */
@ -1050,6 +1056,10 @@ static int had_pcm_open(struct snd_pcm_substream *substream)
if (retval < 0)
goto error;
retval = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
if (retval < 0)
goto error;
/* expose PCM substream */
spin_lock_irq(&intelhaddata->had_spinlock);
intelhaddata->stream_info.substream = substream;