ASoC: codecs: va-macro: add runtime pm support

Add pm runtime support to VA Macro.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220224111718.6264-11-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/lpass-va-macro.c b/sound/soc/codecs/lpass-va-macro.c
index 7627e8a..4687319 100644 (file)
--- a/sound/soc/codecs/lpass-va-macro.c
+++ b/sound/soc/codecs/lpass-va-macro.c
@@ -9,6 +9,7 @@
 #include <linux/of_clk.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <sound/soc.h>
@@ -1469,6 +1470,12 @@ static int va_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:
@@ -1492,6 +1499,39 @@ static int va_macro_remove(struct platform_device *pdev)
        return 0;
 }
 
+static int __maybe_unused va_macro_runtime_suspend(struct device *dev)
+{
+       struct va_macro *va = dev_get_drvdata(dev);
+
+       regcache_cache_only(va->regmap, true);
+       regcache_mark_dirty(va->regmap);
+
+       clk_disable_unprepare(va->mclk);
+
+       return 0;
+}
+
+static int __maybe_unused va_macro_runtime_resume(struct device *dev)
+{
+       struct va_macro *va = dev_get_drvdata(dev);
+       int ret;
+
+       ret = clk_prepare_enable(va->mclk);
+       if (ret) {
+               dev_err(va->dev, "unable to prepare mclk\n");
+               return ret;
+       }
+
+       regcache_cache_only(va->regmap, false);
+       regcache_sync(va->regmap);
+       return 0;
+}
+
+
+static const struct dev_pm_ops va_macro_pm_ops = {
+       SET_RUNTIME_PM_OPS(va_macro_runtime_suspend, va_macro_runtime_resume, NULL)
+};
+
 static const struct of_device_id va_macro_dt_match[] = {
        { .compatible = "qcom,sc7280-lpass-va-macro" },
        { .compatible = "qcom,sm8250-lpass-va-macro" },
@@ -1504,6 +1544,7 @@ static struct platform_driver va_macro_driver = {
                .name = "va_macro",
                .of_match_table = va_macro_dt_match,
                .suppress_bind_attrs = true,
+               .pm = &va_macro_pm_ops,
        },
        .probe = va_macro_probe,
        .remove = va_macro_remove,