Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- sound/soc/codecs/lpass-tx-macro.c | 41 +++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+)
diff --git a/sound/soc/codecs/lpass-tx-macro.c b/sound/soc/codecs/lpass-tx-macro.c index 7347d79a6329..1c0f0d27ed42 100644 --- a/sound/soc/codecs/lpass-tx-macro.c +++ b/sound/soc/codecs/lpass-tx-macro.c @@ -6,6 +6,7 @@ #include <linux/clk.h> #include <linux/io.h> #include <linux/platform_device.h> +#include <linux/pm_runtime.h> #include <linux/regmap.h> #include <sound/soc.h> #include <sound/soc-dapm.h> @@ -1844,6 +1845,13 @@ static int tx_macro_probe(struct platform_device *pdev) ARRAY_SIZE(tx_macro_dai)); if (ret) 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(TX_NUM_CLKS_MAX, tx->clks); @@ -1862,6 +1870,38 @@ static int tx_macro_remove(struct platform_device *pdev) return 0; }
+static int __maybe_unused tx_macro_runtime_suspend(struct device *dev) +{ + struct tx_macro *tx = dev_get_drvdata(dev); + + regcache_cache_only(tx->regmap, true); + regcache_mark_dirty(tx->regmap); + + clk_disable_unprepare(tx->clks[2].clk); + clk_disable_unprepare(tx->clks[3].clk); + clk_disable_unprepare(tx->clks[4].clk); + + return 0; +} + +static int __maybe_unused tx_macro_runtime_resume(struct device *dev) +{ + struct tx_macro *tx = dev_get_drvdata(dev); + + clk_prepare_enable(tx->clks[2].clk); + clk_prepare_enable(tx->clks[3].clk); + clk_prepare_enable(tx->clks[4].clk); + regcache_cache_only(tx->regmap, false); + regcache_sync(tx->regmap); + tx->reset_swr = true; + + return 0; +} + +static const struct dev_pm_ops tx_macro_pm_ops = { + SET_RUNTIME_PM_OPS(tx_macro_runtime_suspend, tx_macro_runtime_resume, NULL) +}; + static const struct of_device_id tx_macro_dt_match[] = { { .compatible = "qcom,sc7280-lpass-tx-macro" }, { .compatible = "qcom,sm8250-lpass-tx-macro" }, @@ -1873,6 +1913,7 @@ static struct platform_driver tx_macro_driver = { .name = "tx_macro", .of_match_table = tx_macro_dt_match, .suppress_bind_attrs = true, + .pm = &tx_macro_pm_ops, }, .probe = tx_macro_probe, .remove = tx_macro_remove,