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ASoC: fsl_sai: Refine regcache usage with pm runtime

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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>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/1593412953-10897-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shengjiu Wang 2020-06-29 14:42:33 +08:00 committed by Mark Brown
parent 351cf7445f
commit d8d702e19e
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 1 deletions
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3
sound/soc/fsl/fsl_sai.c
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@ -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);