@@ -5,6 +5,7 @@
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
#include <linux/clk.h>
#include <sound/soc.h>
#include <sound/pcm.h>
@@ -3605,6 +3606,13 @@ static int rx_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:
@@ -3641,11 +3649,65 @@ static const struct of_device_id rx_macro_dt_match[] = {
};
MODULE_DEVICE_TABLE(of, rx_macro_dt_match);
+static int __maybe_unused rx_macro_runtime_suspend(struct device *dev)
+{
+ struct rx_macro *rx = dev_get_drvdata(dev);
+
+ regcache_cache_only(rx->regmap, true);
+ regcache_mark_dirty(rx->regmap);
+
+ clk_disable_unprepare(rx->mclk);
+ clk_disable_unprepare(rx->npl);
+ clk_disable_unprepare(rx->fsgen);
+
+ return 0;
+}
+
+static int __maybe_unused rx_macro_runtime_resume(struct device *dev)
+{
+ struct rx_macro *rx = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(rx->mclk);
+ if (ret) {
+ dev_err(dev, "unable to prepare mclk\n");
+ return ret;
+ }
+
+ ret = clk_prepare_enable(rx->npl);
+ if (ret) {
+ dev_err(dev, "unable to prepare mclkx2\n");
+ goto err_npl;
+ }
+
+ ret = clk_prepare_enable(rx->fsgen);
+ if (ret) {
+ dev_err(dev, "unable to prepare fsgen\n");
+ goto err_fsgen;
+ }
+ regcache_cache_only(rx->regmap, false);
+ regcache_sync(rx->regmap);
+ rx->reset_swr = true;
+
+ return 0;
+err_fsgen:
+ clk_disable_unprepare(rx->npl);
+err_npl:
+ clk_disable_unprepare(rx->mclk);
+
+ return ret;
+}
+
+static const struct dev_pm_ops rx_macro_pm_ops = {
+ SET_RUNTIME_PM_OPS(rx_macro_runtime_suspend, rx_macro_runtime_resume, NULL)
+};
+
static struct platform_driver rx_macro_driver = {
.driver = {
.name = "rx_macro",
.of_match_table = rx_macro_dt_match,
.suppress_bind_attrs = true,
+ .pm = &rx_macro_pm_ops,
},
.probe = rx_macro_probe,
.remove = rx_macro_remove,
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> --- sound/soc/codecs/lpass-rx-macro.c | 62 +++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+)