On Wed, Dec 09, 2015 at 09:46:12PM +0530, Subhransu S. Prusty wrote:
> +static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
> + void *eld)
> +{
> + u64 formats = SNDRV_PCM_FMTBIT_S16;
> + int i;
> + const u8 *sad, *eld_buf = eld;
> +
> + sad = drm_eld_sad(eld_buf);
> + if (!sad)
> + goto format_constraint;
> +
> + for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
> + if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
switch (sad_format(sad)) {
case AUDIO_CODING_TYPE_LPCM:
> +
> + /* 20 bit and 24 bit */
> + if (sad_sample_bits_lpcm(sad) & 0x6)
> + formats |= SNDRV_PCM_FMTBIT_S32;
> + }
> + }
I really don't have a clear idea what the above is supposed to do or why
this is specific to HDAC and not handled...
> - return 0;
> + return snd_pcm_hw_constraint_eld(substream->runtime,
> + dai_map->pin->eld.eld_buffer);
...here.
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