From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-i2c@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org,
Hans de Goede <hdegoede@redhat.com>,
linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH 10/10] i2c: rcar: add suspend/resume support
Date: Wed, 19 Dec 2018 17:48:26 +0100 [thread overview]
Message-ID: <20181219164827.20985-11-wsa+renesas@sang-engineering.com> (raw)
In-Reply-To: <20181219164827.20985-1-wsa+renesas@sang-engineering.com>
Because the adapter will be set up before every transaction anyhow, we
just need to mark it as suspended to the I2C core.
Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
drivers/i2c/busses/i2c-rcar.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 254e6219e538..1d6390eed861 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -1017,10 +1017,35 @@ static int rcar_i2c_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int rcar_i2c_suspend(struct device *dev)
+{
+ struct rcar_i2c_priv *priv = dev_get_drvdata(dev);
+
+ i2c_mark_adapter_suspended(&priv->adap);
+ return 0;
+}
+
+static int rcar_i2c_resume(struct device *dev)
+{
+ struct rcar_i2c_priv *priv = dev_get_drvdata(dev);
+
+ i2c_mark_adapter_resumed(&priv->adap);
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(rcar_i2c_pm_ops, rcar_i2c_suspend, rcar_i2c_resume);
+
+#define DEV_PM_OPS (&rcar_i2c_pm_ops)
+#else
+#define DEV_PM_OPS NULL
+#endif /* CONFIG_PM_SLEEP */
+
static struct platform_driver rcar_i2c_driver = {
.driver = {
.name = "i2c-rcar",
.of_match_table = rcar_i2c_dt_ids,
+ .pm = DEV_PM_OPS,
},
.probe = rcar_i2c_probe,
.remove = rcar_i2c_remove,
--
2.11.0
next prev parent reply other threads:[~2018-12-19 16:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-19 16:48 [PATCH 00/10] i2c: move handling of suspended adapters to the core Wolfram Sang
2018-12-19 16:48 ` [PATCH 01/10] i2c: add suspended flag and accessors for i2c adapters Wolfram Sang
2018-12-19 17:22 ` Lukas Wunner
2018-12-19 18:36 ` Hans de Goede
2018-12-19 22:33 ` Wolfram Sang
2018-12-20 10:00 ` Hans de Goede
2018-12-20 21:09 ` Rafael J. Wysocki
2018-12-21 10:43 ` Hans de Goede
2018-12-21 14:50 ` Wolfram Sang
2018-12-21 18:40 ` Peter Rosin
2018-12-21 18:50 ` Wolfram Sang
2018-12-19 16:48 ` [PATCH 02/10] i2c: reject new transfers when adapters are suspended Wolfram Sang
2018-12-19 16:48 ` [PATCH 03/10] i2c: synquacer: remove unused is_suspended flag Wolfram Sang
2018-12-19 16:48 ` [PATCH 04/10] i2c: brcmstb: use core helper to mark adapter suspended Wolfram Sang
2018-12-19 16:48 ` [PATCH 05/10] i2c: zx2967: " Wolfram Sang
2018-12-19 16:48 ` [PATCH 06/10] i2c: sprd: don't use pdev as variable name for struct device * Wolfram Sang
2018-12-21 8:58 ` Baolin Wang
2018-12-19 16:48 ` [PATCH 07/10] i2c: sprd: use core helper to mark adapter suspended Wolfram Sang
2018-12-21 9:03 ` Baolin Wang
2018-12-19 16:48 ` [PATCH 08/10] i2c: exynos5: " Wolfram Sang
2018-12-19 16:48 ` [PATCH 09/10] i2c: s3c2410: " Wolfram Sang
2018-12-19 16:48 ` Wolfram Sang [this message]
2019-01-08 20:09 ` [PATCH 00/10] i2c: move handling of suspended adapters to the core Wolfram Sang
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