linux-kernel - [PATCH] ASoC: qcom: lpass-sc7280: Add system suspend/resume PM ops

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <1669703784-27589-1-git-send-email-quic_srivasam@quicinc.com>
Date:   Tue, 29 Nov 2022 12:06:24 +0530
From:   Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>, <lgirdwood@...il.com>,
        <broonie@...nel.org>, <robh+dt@...nel.org>,
        <quic_plai@...cinc.com>, <bgoswami@...cinc.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <srinivas.kandagatla@...aro.org>,
        <quic_rohkumar@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>,
        <swboyd@...omium.org>, <judyhsiao@...omium.org>,
        <devicetree@...r.kernel.org>
CC:     Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
Subject: [PATCH] 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@...cinc.com>
Tested-by: Rahul Ajmeriya <quic_rajmeriy@...cinc.com>
---
 sound/soc/qcom/lpass-sc7280.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/sound/soc/qcom/lpass-sc7280.c b/sound/soc/qcom/lpass-sc7280.c
index 70c4df8..65a04d3 100644
--- 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,
-- 
2.7.4