@@ -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,
Add pm runtime support to VA Macro. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> --- sound/soc/codecs/lpass-va-macro.c | 41 +++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+)