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| author | Moise Gergaud <moise.gergaud@st.com> | 2016-04-07 12:25:34 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-04-12 06:59:09 +0300 |
| commit | 72199787662612a7747248f8b56bc5d42694538f (patch) | |
| tree | 74a4db62ade332a182bd10634400b7e6f076ed40 /sound/soc/sti/sti_uniperif.c | |
| parent | 44f948bdb175bf326911c9ba0e47389918161ce5 (diff) | |
| download | linux-72199787662612a7747248f8b56bc5d42694538f.tar.xz | |
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>
Diffstat (limited to 'sound/soc/sti/sti_uniperif.c')
| -rw-r--r-- | sound/soc/sti/sti_uniperif.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/soc/sti/sti_uniperif.c b/sound/soc/sti/sti_uniperif.c index 0c2474c16c11..d49badec9e62 100644 --- a/sound/soc/sti/sti_uniperif.c +++ b/sound/soc/sti/sti_uniperif.c @@ -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) { |