Update lpass sc7180 platform driver with PM ops, such as
system supend and resume callbacks.
This update is required to disable clocks during supend and
avoid XO shutdown issue.
Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@xxxxxxxxxxx>
Tested-by: Rahul Ajmeriya <quic_rajmeriy@xxxxxxxxxxx>
---
sound/soc/qcom/lpass-sc7180.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/sound/soc/qcom/lpass-sc7180.c b/sound/soc/qcom/lpass-sc7180.c
index 77a556b..6ad1c5b 100644
--- a/sound/soc/qcom/lpass-sc7180.c
+++ b/sound/soc/qcom/lpass-sc7180.c
@@ -12,6 +12,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
#include <dt-bindings/sound/sc7180-lpass.h>
#include <sound/pcm.h>
#include <sound/soc.h>
@@ -156,10 +157,34 @@ static int sc7180_lpass_exit(struct platform_device *pdev)
struct lpass_data *drvdata = platform_get_drvdata(pdev);
clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
+ return 0;
+}
+
+static int sc7180_lpass_dev_resume(struct device *dev)
+{
+ int ret = 0;
+ struct lpass_data *drvdata = dev_get_drvdata(dev);
+ ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
+ if (ret) {
+ dev_err(dev, "sc7180 clk prepare and enable failed\n");
+ return ret;
+ }
+ return ret;
+}
+
+static int sc7180_lpass_dev_suspend(struct device *dev)
+{
+ struct lpass_data *drvdata = dev_get_drvdata(dev);
+
+ clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
return 0;
}
+static const struct dev_pm_ops sc7180_lpass_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(sc7180_lpass_dev_suspend, sc7180_lpass_dev_resume)
+};
+
static struct lpass_variant sc7180_data = {
.i2sctrl_reg_base = 0x1000,
.i2sctrl_reg_stride = 0x1000,
@@ -293,6 +318,7 @@ static struct platform_driver sc7180_lpass_cpu_platform_driver = {
.driver = {
.name = "sc7180-lpass-cpu",
.of_match_table = of_match_ptr(sc7180_lpass_cpu_device_id),
+ .pm = &sc7180_lpass_pm_ops,
},
.probe = asoc_qcom_lpass_cpu_platform_probe,
.remove = asoc_qcom_lpass_cpu_platform_remove,
--
2.7.4
