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Commit 72199787 authored by Moise Gergaud's avatar Moise Gergaud Committed by Mark Brown
Browse files

ASoC: sti: helper functions to fix tdm runtime params 



Signed-off-by: default avatarMoise Gergaud <moise.gergaud@st.com>
Acked-by: default avatarArnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 44f948bd

sound/soc/sti/sti_uniperif.c

+46 −0
Original line number Diff line number Diff line
@@ -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)

{

sound/soc/sti/uniperif.h

+6 −0
Original line number Diff line number Diff line
@@ -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