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 --- Changes since v1: -- Add __maybe_unused flag for suspend/resume APIs.

sound/soc/qcom/lpass-sc7280.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)

diff --git a/sound/soc/qcom/lpass-sc7280.c b/sound/soc/qcom/lpass-sc7280.c index 70c4df8..d43f480 100644 --- a/sound/soc/qcom/lpass-sc7280.c +++ b/sound/soc/qcom/lpass-sc7280.c @@ -232,10 +232,28 @@ 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 __maybe_unused 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 __maybe_unused 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 +444,7 @@ 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,