diff options
| author | Shengjiu Wang <shengjiu.wang@freescale.com> | 2017-07-12 18:00:58 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2019-11-25 15:53:47 +0800 |
| commit | c709ebd03538e5ddd783a33e2ba09167e7fe6699 (patch) | |
| tree | 75f7af704dde9b07f1a7ad03a30b780c10ec6466 /sound/soc/fsl/fsl_sai.c | |
| parent | f4a5a728876b3ba4fd4dc74de1f3dc9dc000077f (diff) | |
MLK-15960-2: ASoC: fsl_sai: refine the pm runtime function
In imx8qm/imx8qxp, the power domain of IP is enabled when
pm_runtime_get_sync() is called, and disabled when pm_runtime
_put_sync() is called. when power domain is disabled, the value
of registers will lost, so we need to use the regcache_sync()
to restore the registers in fsl_sai_runtime_resume.
Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
Diffstat (limited to 'sound/soc/fsl/fsl_sai.c')
| -rw-r--r-- | sound/soc/fsl/fsl_sai.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index cd42edd89187..9e72754798d0 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -1096,6 +1096,8 @@ static int fsl_sai_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); + regcache_cache_only(sai->regmap, true); + ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component, &fsl_sai_dai, 1); if (ret) @@ -1127,6 +1129,8 @@ static int fsl_sai_runtime_suspend(struct device *dev) { struct fsl_sai *sai = dev_get_drvdata(dev); + regcache_cache_only(sai->regmap, true); + if (sai->mclk_streams & BIT(SNDRV_PCM_STREAM_CAPTURE)) clk_disable_unprepare(sai->mclk_clk[sai->mclk_id[0]]); |