Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Heikki Krogerus <heikki.krogerus@linux.intel.com>
To:     linux-usb@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, grzegorz.alibozek@gmail.com,
        bastian@rieck.me, andrew.co@free.fr, meven29@gmail.com,
        pchernik@gmail.com, jorge.cep.mart@gmail.com,
        danielmorgan@disroot.org, bernie@codewiz.org,
        saipavanchitta1998@gmail.com, rubin@starset.net,
        maniette@gmail.com, nate@kde.org
Subject: [RFC PATCH 2/2] usb: typec: ucsi: acpi: Add PM hooks
Date:   Wed,  7 Sep 2022 14:56:26 +0300
Message-Id: <20220907115626.21976-3-heikki.krogerus@linux.intel.com>
In-Reply-To: <20220907115626.21976-1-heikki.krogerus@linux.intel.com>
References: <20220907115626.21976-1-heikki.krogerus@linux.intel.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Some systems notify the driver separately after resume if
the state of the connection changed during suspend, but
there is no way we can rely on that.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=210425
Fixes: a94ecde41f7e ("usb: typec: ucsi: ccg: enable runtime pm support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
 drivers/usb/typec/ucsi/ucsi_acpi.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/usb/typec/ucsi/ucsi_acpi.c b/drivers/usb/typec/ucsi/ucsi_acpi.c
index 8873c1644a295..8c7008cc9942e 100644
--- a/drivers/usb/typec/ucsi/ucsi_acpi.c
+++ b/drivers/usb/typec/ucsi/ucsi_acpi.c
@@ -185,6 +185,20 @@ static int ucsi_acpi_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static int ucsi_acpi_suspend(struct device *dev)
+{
+	return 0;
+}
+
+static int ucsi_acpi_resume(struct device *dev)
+{
+	struct ucsi_acpi *ua = dev_get_drvdata(dev);
+
+	return ucsi_resume(ua->ucsi);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(ucsi_acpi_pm_ops, ucsi_acpi_suspend, ucsi_acpi_resume);
+
 static const struct acpi_device_id ucsi_acpi_match[] = {
 	{ "PNP0CA0", 0 },
 	{ },
@@ -194,6 +208,7 @@ MODULE_DEVICE_TABLE(acpi, ucsi_acpi_match);
 static struct platform_driver ucsi_acpi_platform_driver = {
 	.driver = {
 		.name = "ucsi_acpi",
+		.pm = pm_ptr(&ucsi_acpi_pm_ops),
 		.acpi_match_table = ACPI_PTR(ucsi_acpi_match),
 	},
 	.probe = ucsi_acpi_probe,
-- 
2.35.1