Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6742e15c authored by Jyri Sarha's avatar Jyri Sarha Committed by Mark Brown
Browse files

ASoC: omap-pcm: Allow only formats with 1, 2, and 4 byte physical size 



sDMA support only transfer elements with 1, 2, and 4 byte physical
size. Initialize the pcm driver accordingly.

Signed-off-by: default avatarJyri Sarha <jsarha@ti.com>
Acked-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 5163c1ee

sound/soc/omap/omap-pcm.c

+20 −1
Original line number Diff line number Diff line
@@ -39,7 +39,7 @@ 
#define pcm_omap1510()	0

#endif



static const struct snd_pcm_hardware omap_pcm_hardware = {

static struct snd_pcm_hardware omap_pcm_hardware = {

	.info			= SNDRV_PCM_INFO_MMAP |

				  SNDRV_PCM_INFO_MMAP_VALID |

				  SNDRV_PCM_INFO_INTERLEAVED |
@@ -53,6 +53,24 @@ static const struct snd_pcm_hardware omap_pcm_hardware = { 
	.buffer_bytes_max	= 128 * 1024,

};



/* sDMA supports only 1, 2, and 4 byte transfer elements. */

static void omap_pcm_limit_supported_formats(void)

{

	int i;



	for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) {

		switch (snd_pcm_format_physical_width(i)) {

		case 8:

		case 16:

		case 32:

			omap_pcm_hardware.formats |= (1LL << i);

			break;

		default:

			break;

		}

	}

}



/* this may get called several times by oss emulation */

static int omap_pcm_hw_params(struct snd_pcm_substream *substream,

			      struct snd_pcm_hw_params *params)
@@ -235,6 +253,7 @@ static struct snd_soc_platform_driver omap_soc_platform = { 


int omap_pcm_platform_register(struct device *dev)

{

	omap_pcm_limit_supported_formats();

	return devm_snd_soc_register_platform(dev, &omap_soc_platform);

}

EXPORT_SYMBOL_GPL(omap_pcm_platform_register);