diff options
| author | Stefan Agner <stefan.agner@toradex.com> | 2016-02-24 13:32:20 -0800 |
|---|---|---|
| committer | Stefan Agner <stefan.agner@toradex.com> | 2016-02-25 15:14:00 -0800 |
| commit | e4f69f468cb002c167ab469dbdbeab623f4aa590 (patch) | |
| tree | 3f1b7a70e126031e12370926b6074ccdbefed10b | |
| parent | 8a3e17eb6266bb6cfcd69c4c84686838433163f1 (diff) | |
ASoC: fsl_sai_ac97: restore register contents for LPSTOP modes
Lowest power modes loose the content of the registers. Use regmap
cache to restore the register entries on resume from lowest power
modes.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
| -rw-r--r-- | sound/soc/fsl/fsl_sai_ac97.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_sai_ac97.c b/sound/soc/fsl/fsl_sai_ac97.c index 624df306e356..34fa8b3a4527 100644 --- a/sound/soc/fsl/fsl_sai_ac97.c +++ b/sound/soc/fsl/fsl_sai_ac97.c @@ -577,6 +577,7 @@ static struct regmap_config fsl_sai_regmap_config = { .readable_reg = fsl_sai_readable_reg, .volatile_reg = fsl_sai_volatile_reg, .writeable_reg = fsl_sai_writeable_reg, + .cache_type = REGCACHE_FLAT, }; static struct snd_pcm_hardware snd_sai_ac97_hardware = { @@ -1239,6 +1240,8 @@ static int fsl_sai_ac97_suspend(struct device *dev) dmaengine_terminate_all(sai->dma_tx_chan); dmaengine_terminate_all(sai->dma_rx_chan); + regcache_cache_only(sai->regmap, true); + return 0; } @@ -1246,6 +1249,10 @@ static int fsl_sai_ac97_resume(struct device *dev) { struct fsl_sai_ac97 *sai = dev_get_drvdata(dev); + regcache_mark_dirty(sai->regmap); + regcache_cache_only(sai->regmap, false); + regcache_sync(sai->regmap); + /* Reset SAI */ fsl_sai_ac97_reset_sai(sai); |