Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- sound/soc/codecs/lpass-wsa-macro.c | 61 ++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+)
diff --git a/sound/soc/codecs/lpass-wsa-macro.c b/sound/soc/codecs/lpass-wsa-macro.c index 2586d6350f20..97ef788ab65d 100644 --- a/sound/soc/codecs/lpass-wsa-macro.c +++ b/sound/soc/codecs/lpass-wsa-macro.c @@ -10,6 +10,7 @@ #include <linux/clk-provider.h> #include <sound/soc.h> #include <sound/soc-dapm.h> +#include <linux/pm_runtime.h> #include <linux/of_platform.h> #include <sound/tlv.h> #include "lpass-wsa-macro.h" @@ -2468,6 +2469,12 @@ static int wsa_macro_probe(struct platform_device *pdev) if (ret) goto err_clkout;
+ pm_runtime_set_autosuspend_delay(dev, 3000); + pm_runtime_use_autosuspend(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + return 0;
err_clkout: @@ -2498,6 +2505,59 @@ static int wsa_macro_remove(struct platform_device *pdev) return 0; }
+static int __maybe_unused wsa_macro_runtime_suspend(struct device *dev) +{ + struct wsa_macro *wsa = dev_get_drvdata(dev); + + regcache_cache_only(wsa->regmap, true); + regcache_mark_dirty(wsa->regmap); + + clk_disable_unprepare(wsa->mclk); + clk_disable_unprepare(wsa->npl); + clk_disable_unprepare(wsa->fsgen); + + return 0; +} + +static int __maybe_unused wsa_macro_runtime_resume(struct device *dev) +{ + struct wsa_macro *wsa = dev_get_drvdata(dev); + int ret; + + ret = clk_prepare_enable(wsa->mclk); + if (ret) { + dev_err(dev, "unable to prepare mclk\n"); + return ret; + } + + ret = clk_prepare_enable(wsa->npl); + if (ret) { + dev_err(dev, "unable to prepare mclkx2\n"); + goto err_npl; + } + + ret = clk_prepare_enable(wsa->fsgen); + if (ret) { + dev_err(dev, "unable to prepare fsgen\n"); + goto err_fsgen; + } + + regcache_cache_only(wsa->regmap, false); + regcache_sync(wsa->regmap); + + return 0; +err_fsgen: + clk_disable_unprepare(wsa->npl); +err_npl: + clk_disable_unprepare(wsa->mclk); + + return ret; +} + +static const struct dev_pm_ops wsa_macro_pm_ops = { + SET_RUNTIME_PM_OPS(wsa_macro_runtime_suspend, wsa_macro_runtime_resume, NULL) +}; + static const struct of_device_id wsa_macro_dt_match[] = { {.compatible = "qcom,sc7280-lpass-wsa-macro"}, {.compatible = "qcom,sm8250-lpass-wsa-macro"}, @@ -2509,6 +2569,7 @@ static struct platform_driver wsa_macro_driver = { .driver = { .name = "wsa_macro", .of_match_table = wsa_macro_dt_match, + .pm = &wsa_macro_pm_ops, }, .probe = wsa_macro_probe, .remove = wsa_macro_remove,