Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- sound/soc/codecs/lpass-rx-macro.c | 45 ++++++++++++++++++++++++++++++- 1 file changed, 44 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c index 0ed032b220a4..fb5d4bb8bd8b 100644 --- a/sound/soc/codecs/lpass-rx-macro.c +++ b/sound/soc/codecs/lpass-rx-macro.c @@ -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> @@ -3568,8 +3569,17 @@ static int rx_macro_probe(struct platform_device *pdev) rx_macro_dai, ARRAY_SIZE(rx_macro_dai)); if (ret) - clk_bulk_disable_unprepare(RX_NUM_CLKS_MAX, rx->clks); + goto err; + + 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 ret; +err: + clk_bulk_disable_unprepare(RX_NUM_CLKS_MAX, rx->clks); return ret; }
@@ -3589,11 +3599,44 @@ 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->clks[2].clk); + clk_disable_unprepare(rx->clks[3].clk); + clk_disable_unprepare(rx->clks[4].clk); + + return 0; +} + +static int __maybe_unused rx_macro_runtime_resume(struct device *dev) +{ + struct rx_macro *rx = dev_get_drvdata(dev); + + clk_prepare_enable(rx->clks[2].clk); + clk_prepare_enable(rx->clks[3].clk); + clk_prepare_enable(rx->clks[4].clk); + regcache_cache_only(rx->regmap, false); + regcache_sync(rx->regmap); + rx->reset_swr = true; + + return 0; +} + +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,