From 2d68148f8f85ca5a4bf5e80c821b56167cfc0f8b Mon Sep 17 00:00:00 2001 From: Srinivasa Rao Mandadapu Date: Mon, 28 Nov 2022 13:19:02 +0530 Subject: [PATCH] ASoC: qcom: lpass-sc7180: Add system suspend/resume PM ops 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 Tested-by: Rahul Ajmeriya Link: https://lore.kernel.org/r/1669621742-28524-1-git-send-email-quic_srivasam@quicinc.com Signed-off-by: Mark Brown --- 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 24a1c12..9c3365d 100644 --- a/sound/soc/qcom/lpass-sc7180.c +++ b/sound/soc/qcom/lpass-sc7180.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -159,10 +160,34 @@ 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, @@ -296,6 +321,7 @@ 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