diff options
Diffstat (limited to 'sound/soc/mxs/mxs-saif.c')
| -rw-r--r-- | sound/soc/mxs/mxs-saif.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/sound/soc/mxs/mxs-saif.c b/sound/soc/mxs/mxs-saif.c index aa037b292f3..b304e375568 100644 --- a/sound/soc/mxs/mxs-saif.c +++ b/sound/soc/mxs/mxs-saif.c @@ -229,6 +229,7 @@ int mxs_saif_put_mclk(unsigned int saif_id) saif->mclk_in_use = 0; return 0; } +EXPORT_SYMBOL_GPL(mxs_saif_put_mclk); /* * Get MCLK and set clock rate, then enable it @@ -282,6 +283,7 @@ int mxs_saif_get_mclk(unsigned int saif_id, unsigned int mclk, return 0; } +EXPORT_SYMBOL_GPL(mxs_saif_get_mclk); /* * SAIF DAI format configuration. @@ -523,16 +525,24 @@ static int mxs_saif_trigger(struct snd_pcm_substream *substream, int cmd, if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { /* - * write a data to saif data register to trigger - * the transfer + * write data to saif data register to trigger + * the transfer. + * For 24-bit format the 32-bit FIFO register stores + * only one channel, so we need to write twice. + * This is also safe for the other non 24-bit formats. */ __raw_writel(0, saif->base + SAIF_DATA); + __raw_writel(0, saif->base + SAIF_DATA); } else { /* - * read a data from saif data register to trigger - * the receive + * read data from saif data register to trigger + * the receive. + * For 24-bit format the 32-bit FIFO register stores + * only one channel, so we need to read twice. + * This is also safe for the other non 24-bit formats. */ __raw_readl(saif->base + SAIF_DATA); + __raw_readl(saif->base + SAIF_DATA); } master_saif->ongoing = 1; @@ -812,3 +822,4 @@ module_platform_driver(mxs_saif_driver); MODULE_AUTHOR("Freescale Semiconductor, Inc."); MODULE_DESCRIPTION("MXS ASoC SAIF driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:mxs-saif"); |