From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Fu, Zhonghui" Subject: Re: [PATCH v2] i2c/designware: enable i2c controller to suspend/resume asynchronously Date: Mon, 16 Nov 2015 23:42:40 +0800 Message-ID: <5649F970.6040708@linux.intel.com> References: <5603A1E9.4040406@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com ([134.134.136.24]:13814 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751636AbbKPPmp (ORCPT ); Mon, 16 Nov 2015 10:42:45 -0500 In-Reply-To: <5603A1E9.4040406@linux.intel.com> Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: wsa@the-dreams.de, Mika Westerberg , 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, jarkko.nikula@intel.com, mika.westerberg@intel.com Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Any comments are welcome. Thanks, Zhonghui On 9/24/2015 3:10 PM, Fu, Zhonghui wrote: > 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 > --- > 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 >