lkml.org 
[lkml]   [2020]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] ASoC: fsl_sai: Refine regcache usage with pm runtime
Date
When there is dedicated power domain bound with device, after probing
the power will be disabled, then registers are not accessible in
fsl_sai_dai_probe(), so regcache only need to be enabled in end of
probe() and regcache_mark_dirty should be moved to pm runtime resume
callback function.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---
sound/soc/fsl/fsl_sai.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 9d436b0c5718..a22562f2df47 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -1016,6 +1016,7 @@ static int fsl_sai_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, sai);

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);
@@ -1107,7 +1108,6 @@ static int fsl_sai_runtime_suspend(struct device *dev)
clk_disable_unprepare(sai->bus_clk);

regcache_cache_only(sai->regmap, true);
- regcache_mark_dirty(sai->regmap);

return 0;
}
@@ -1137,6 +1137,7 @@ static int fsl_sai_runtime_resume(struct device *dev)
}

regcache_cache_only(sai->regmap, false);
+ regcache_mark_dirty(sai->regmap);
regmap_write(sai->regmap, FSL_SAI_TCSR(ofs), FSL_SAI_CSR_SR);
regmap_write(sai->regmap, FSL_SAI_RCSR(ofs), FSL_SAI_CSR_SR);
usleep_range(1000, 2000);
--
2.21.0
\
 
 \ /
  Last update: 2020-06-29 20:46    [W:0.047 / U:1.728 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site