ASoC: qcom: lpass-sc7280: Add system suspend/resume PM ops

Update lpass sc7280 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@quicinc.com>
Tested-by: Rahul Ajmeriya <quic_rajmeriy@quicinc.com>
Link: https://lore.kernel.org/r/1669703784-27589-1-git-send-email-quic_srivasam@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/qcom/lpass-sc7280.c b/sound/soc/qcom/lpass-sc7280.c
index 70c4df87d957ea5db7232727197f0c5ee8e735df..65a04d341859b02d87a26fde9372f7a6ddc8cfdb 100644 (file)
--- a/sound/soc/qcom/lpass-sc7280.c
+++ b/sound/soc/qcom/lpass-sc7280.c
@@ -232,10 +232,27 @@ static int sc7280_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 sc7280_lpass_dev_resume(struct device *dev)
+{
+       struct lpass_data *drvdata = dev_get_drvdata(dev);
+
+       return clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
+}
+
+static int sc7280_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 sc7280_lpass_pm_ops = {
+       SET_SYSTEM_SLEEP_PM_OPS(sc7280_lpass_dev_suspend, sc7280_lpass_dev_resume)
+};
 static struct lpass_variant sc7280_data = {
        .i2sctrl_reg_base               = 0x1000,
        .i2sctrl_reg_stride             = 0x1000,
@@ -426,6 +443,7 @@ static struct platform_driver sc7280_lpass_cpu_platform_driver = {
        .driver = {
                .name = "sc7280-lpass-cpu",
                .of_match_table = of_match_ptr(sc7280_lpass_cpu_device_id),
+               .pm = &sc7280_lpass_pm_ops,
        },
        .probe = asoc_qcom_lpass_cpu_platform_probe,
        .remove = asoc_qcom_lpass_cpu_platform_remove,