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ASoC: sti: helper functions to fix tdm runtime params 

Signed-off-by: Moise Gergaud <moise.gergaud@st.com>
Acked-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Moise Gergaud 2016-04-07 11:25:34 +02:00 committed by Mark Brown
parent 44f948bdb1
commit 7219978766
2 changed files with 52 additions and 0 deletions
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46
sound/soc/sti/sti_uniperif.c
View File

@ -59,6 +59,52 @@ int sti_uniperiph_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
return 0;
}
int sti_uniperiph_fix_tdm_chan(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct uniperif *uni = rule->private;
struct snd_interval t;
t.min = uni->tdm_slot.avail_slots;
t.max = uni->tdm_slot.avail_slots;
t.openmin = 0;
t.openmax = 0;
t.integer = 0;
return snd_interval_refine(hw_param_interval(params, rule->var), &t);
}
int sti_uniperiph_fix_tdm_format(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct uniperif *uni = rule->private;
struct snd_mask *maskp = hw_param_mask(params, rule->var);
u64 format;
switch (uni->tdm_slot.slot_width) {
case 16:
format = SNDRV_PCM_FMTBIT_S16_LE;
break;
case 32:
format = SNDRV_PCM_FMTBIT_S32_LE;
break;
default:
dev_err(uni->dev, "format not supported: %d bits\n",
uni->tdm_slot.slot_width);
return -EINVAL;
}
maskp->bits[0] &= (u_int32_t)format;
maskp->bits[1] &= (u_int32_t)(format >> 32);
/* clear remaining indexes */
memset(maskp->bits + 2, 0, (SNDRV_MASK_MAX - 64) / 8);
if (!maskp->bits[0] && !maskp->bits[1])
return -EINVAL;
return 0;
}
int sti_uniperiph_get_tdm_word_pos(struct uniperif *uni,
unsigned int *word_pos)
{

6
sound/soc/sti/uniperif.h
View File

@ -1396,4 +1396,10 @@ int sti_uniperiph_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
int sti_uniperiph_get_tdm_word_pos(struct uniperif *uni,
unsigned int *word_pos);
int sti_uniperiph_fix_tdm_chan(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule);
int sti_uniperiph_fix_tdm_format(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule);
#endif