linux-kernel - [PATCH] i2c/designware: enable i2c controller to suspend/resume asynchronously

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Message-ID: <55D20D79.3090308@linux.intel.com>
Date:	Tue, 18 Aug 2015 00:36:09 +0800
From:	"Fu, Zhonghui" <zhonghui.fu@...ux.intel.com>
To:	wsa@...-dreams.de
CC:	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	christian.ruppert@...tech.com, atull@...nsource.altera.com,
	jszhang@...vell.com, raymond.tan@...el.com,
	Romain.Baeriswyl@...lis.com, carlpeng008@...il.com,
	david.e.box@...ux.intel.com, Alexey.Brodkin@...opsys.com,
	linux-i2c@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] i2c/designware: enable i2c controller to suspend/resume asynchronously

Enable i2c controller to suspend/resume asynchronously. This can improve
system suspend/resume speed.

Signed-off-by: Zhonghui Fu <zhonghui.fu@...ux.intel.com>
---
 drivers/i2c/busses/i2c-designware-platdrv.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 3dd2de3..fec0fce 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -245,6 +245,7 @@ static int dw_i2c_probe(struct platform_device *pdev)
 
 	adap = &dev->adapter;
 	i2c_set_adapdata(adap, dev);
+	device_enable_async_suspend(&pdev->dev);
 	adap->owner = THIS_MODULE;
 	adap->class = I2C_CLASS_DEPRECATED;
 	strlcpy(adap->name, "Synopsys DesignWare I2C adapter",
-- 1.7.1

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