On Saturday 21 January 2012 06:21 PM, Mark Brown wrote:
On Sat, Jan 21, 2012 at 04:54:52PM +0530, Laxman Dewangan wrote:
During initialization of device, we need to tell that device is
wakeup capable and hence we need to call the: device_wakeup_init()
and device_set_wakeup_capable(dev, true).
Then it exposes the required sysfs to userspace to select the wakeup
enable or not i.e. power/wakeup to be written as enabled or
disabled.
Based on user selection, the function device_may_wakeup() will
return true/false based on power/wakeup enabled/disabled. So before
entering into the suspend, we need to check this function and call
enable_irq_wakeup() to have the wakeup enabled actually in the soc.
In resume we need to call disable_irq_wake() again.
Yes, that sounds about right. You don't strictly need to worry about
the wake setup except when suspending but it tends to be easier to
implement that way.
Thanks, I will send another patch for implementing this way.
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