When there is power domain bind with ipg_clk clock,
The call flow: devm_regmap_init_mmio_clk - clk_prepare() - clk_pm_runtime_get()
cause the power domain of clock always be enabled after regmap_init(). which impact the power consumption.
So use devm_regmap_init_mmio instead of devm_regmap_init_mmio_clk,but explicitly enable clock when it is used.
Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com Reviewed-by: Viorel Suman viorel.suman@nxp.com --- sound/soc/fsl/fsl_micfil.c | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-)
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c index 2b9edd4bb94d..3cf789ed6cbe 100644 --- a/sound/soc/fsl/fsl_micfil.c +++ b/sound/soc/fsl/fsl_micfil.c @@ -31,6 +31,7 @@ struct fsl_micfil { struct platform_device *pdev; struct regmap *regmap; const struct fsl_micfil_soc_data *soc; + struct clk *busclk; struct clk *mclk; struct snd_dmaengine_dai_dma_data dma_params_rx; unsigned int dataline; @@ -660,16 +661,22 @@ static int fsl_micfil_probe(struct platform_device *pdev) return PTR_ERR(micfil->mclk); }
+ micfil->busclk = devm_clk_get(&pdev->dev, "ipg_clk"); + if (IS_ERR(micfil->busclk)) { + dev_err(&pdev->dev, "failed to get ipg clock: %ld\n", + PTR_ERR(micfil->busclk)); + return PTR_ERR(micfil->busclk); + } + /* init regmap */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); regs = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(regs)) return PTR_ERR(regs);
- micfil->regmap = devm_regmap_init_mmio_clk(&pdev->dev, - "ipg_clk", - regs, - &fsl_micfil_regmap_config); + micfil->regmap = devm_regmap_init_mmio(&pdev->dev, + regs, + &fsl_micfil_regmap_config); if (IS_ERR(micfil->regmap)) { dev_err(&pdev->dev, "failed to init MICFIL regmap: %ld\n", PTR_ERR(micfil->regmap)); @@ -729,6 +736,7 @@ static int fsl_micfil_probe(struct platform_device *pdev) platform_set_drvdata(pdev, micfil);
pm_runtime_enable(&pdev->dev); + regcache_cache_only(micfil->regmap, true);
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_micfil_component, &fsl_micfil_dai, 1); @@ -752,6 +760,7 @@ static int __maybe_unused fsl_micfil_runtime_suspend(struct device *dev) regcache_cache_only(micfil->regmap, true);
clk_disable_unprepare(micfil->mclk); + clk_disable_unprepare(micfil->busclk);
return 0; } @@ -761,10 +770,16 @@ static int __maybe_unused fsl_micfil_runtime_resume(struct device *dev) struct fsl_micfil *micfil = dev_get_drvdata(dev); int ret;
- ret = clk_prepare_enable(micfil->mclk); + ret = clk_prepare_enable(micfil->busclk); if (ret < 0) return ret;
+ ret = clk_prepare_enable(micfil->mclk); + if (ret < 0) { + clk_disable_unprepare(micfil->busclk); + return ret; + } + regcache_cache_only(micfil->regmap, false); regcache_mark_dirty(micfil->regmap); regcache_sync(micfil->regmap);