sorry, it should be S3, all driver's suspend method will be called when system entered S3, right? all subdev's power off method will be called in camera driver's suspend method.
Thanks, -- Yong Phone (+86) 21-61166334 Lab (+86) 21-61167881 -----Original Message----- From: Brown, Len Sent: Monday, June 13, 2011 12:55 PM To: He, Yong M; Arjan van de Ven Cc: [email protected]; Accardi, Kristen C Subject: RE: [Meego-kernel] [PATCH] MRST Tablet camera driver ver-0.95 (re-send), fix 8112 > about the power state of camera subdevs, > the original idea is to power off all subdevs (camera sensors) when there's > no user application was > opening this device. > (the libCI breaks down all its operations to many very small ones, each one > will do an open and close > on the /dev/video0 file. so there're many power off&on for even a single > snapshot operation) > but since we updated the firmware for AF feature, each power on, we need to > re-load the firmware, it > will break the focus status,,, > so I remove this power-off. and only do power off when the driver's suspend > method is called (for > example, system goes to S0i3), not every time when it is closed. What do you mean "for example, the system goes to S0i3?" That may happen many times per second, and this driver is not notified of the system's desire to enter S0i3. What if no application is currently using the camera? _______________________________________________ MeeGo-kernel mailing list [email protected] http://lists.meego.com/listinfo/meego-kernel
