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SubjectRe: [PATCH v2] i2c/designware: enable i2c controller to suspend/resume asynchronously

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 <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
>



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