From: "Fu, Zhonghui" <zhonghui.fu@linux.intel.com>
To: wsa@the-dreams.de,
Mika Westerberg <mika.westerberg@linux.intel.com>,
christian.ruppert@alitech.com, atull@opensource.altera.com,
jszhang@marvell.com, raymond.tan@intel.com,
Romain.Baeriswyl@abilis.com, carlpeng008@gmail.com,
david.e.box@linux.intel.com, Alexey.Brodkin@synopsys.com
Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2] i2c/designware: enable i2c controller to suspend/resume asynchronously
Date: Thu, 24 Sep 2015 15:10:33 +0800 [thread overview]
Message-ID: <5603A1E9.4040406@linux.intel.com> (raw)
Now, PM core supports asynchronous suspend/resume mode for devices
during system suspend/resume, and the power state transition of one
device may be completed in separate kernel thread. PM core ensures
all power state transition timing dependency between devices. This
patch enables i2c controller to suspend/resume asynchronously. This
will take advantage of multicore and improve system suspend/resume
speed.
Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com>
---
Changes in v2:
- Amend commit message.
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
next reply other threads:[~2015-09-24 7:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-24 7:10 Fu, Zhonghui [this message]
2015-11-16 15:42 ` [PATCH v2] i2c/designware: enable i2c controller to suspend/resume asynchronously Fu, Zhonghui
2016-01-15 6:38 Fu, Zhonghui
2016-02-01 15:04 ` Jarkko Nikula
2016-02-01 15:16 ` Andy Shevchenko
2016-02-01 15:54 ` Wolfram Sang
2016-03-08 8:05 ` Fu, Zhonghui
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