Den 23/09/2011 19.16 skrev "seba" <sebastian.dr...@gmail.com>: > Hi, > > I think you need to port the lights library for your platfrom? > (mydroid/hardware/<TARGET_BOARD_PLATFORM>/liblights) > > Android expects the sysfile -> /sys/class/leds/lcd-backlight/ > brightness as the point to set the current brightness of lcd > backlight. > If the kernel uses another point for such regulation you will have to > change the LCD_FILE definition in the "lights.c" file. In this case > you need to modify the "inir.rc" file as well (I mean the row with > 'chown system system /sys/class/leds/lcd-backlight/brightness'). > > Keep in mind that Android sets the brightness value from 0 to 255, > where '0' means display backlight is switched off. > > Regards, > Sebastian. > > > > > On 19 Wrz, 13:08, Sunil Pillai <sunilpillai....@gmail.com> wrote: >> I have compiled the kernel using all the required configuration for >> PM. >> >> CONFIG_PM, CONFIG_SUSPEND, CONFIG_WAKELOCK, >> CONFIG_FB_EARLYSUSPEND, CPU_IDLE etc are set. >> >> After bootup I also see the logs for request_suspend_state() being >> called. >> Log : >> <6>request_suspend_state: wakeup (3->0) at 92533989002 (1970-01-02 >> 00:00:23.984496000 UTC) >> <3>init: untracked pid 50 exited >> <3>init: untracked pid 54 exited >> <6>request_suspend_state: wakeup (0->0) at 142433989002 (1970-01-02 >> 00:01:13.886088000 UTC) >> >> So initially on bootup the system moves into PM_SUSPEND_ON state. >> >> Regards, >> Sunil >> >> Regards, >> Sunil >> >> On Sep 19, 2:52 pm, 叶祥振 <bluedream...@gmail.com> wrote: >> >> > if cat /sys/power/state returns a blank means your kernel do not support >> > suspend/on state. >> > I wonder do you have the kernel source, and enable the power managerment >> > switches in kernel config. >> >> > 2011/9/17 Sunil Pillai <sunilpillai....@gmail.com> >> >> > > cat /sys/power/wake_lock just prints a blank line. >> > > Also, cat /sys/power/state returns a blank. >> >> > > Something looks to be seriously wrong. >> >> > > Regards, >> > > Sunil >> >> > > On Sep 16, 3:55 pm, 叶祥振 <bluedream...@gmail.com> wrote: >> > > > try to >> > > > #cat /sys/power/wake_lock >> > > > and see what's holding the wake lock. >> > > > Regards >> >> > > > 2011/9/16 Sunil Pillai <sunilpillai....@gmail.com> >> >> > > > > I tried cat /sys/power/state & it outputs >> > > > > radio-interface. >> >> > > > > Assuming that the RIL is basically holding a wakelock i tired >> > > > > debugging using- >> > > > > echo 15 > /sys/module/wakelock/parameters/debug hoping it to print all >> > > > > wakelock acuire & release sequences. >> > > > > This didn't print anything :( >> >> > > > > I hope I'm on track unless has a useful comment at this point! >> >> > > > > Regards, >> > > > > Sunil >> >> > > > > On Sep 16, 12:31 am, Sunil Pillai <sunilpillai....@gmail.com> wrote: >> > > > > > Hello All, >> >> > > > > > I am using android 2.6.35 kernel with a platform using s3c2410 >> > > > > > processor. After android (gingerbread) boots up the screen as >> > > expected >> > > > > > is in the locked state. The screen timeout set is 15 seconds. But >> > > even >> > > > > > after long inactivity on the system the screen does not go to >> > > > > > screen_dim state followed by screen_off state. >> >> > > > > > I tired to move the system to suspend state by writing value "mem" & >> > > > > > standby into /sys/power/state - >> > > > > > echo mem > /sys/power/state, but the system does not go to suspend >> > > > > > state too. (I don't have a dedicated power button to force suspend) >> >> > > > > > I have already enabled early suspend, wakelock etc in "Power >> > > > > > Management support" section of the config file. >> >> > > > > > Any idea why the LCD backlight doesnot turn off and why the system >> > > > > > does not react to /sys/power/state interface ? >> >> > > > > > Regards, >> > > > > > Sunil >> >> > > > > -- >> > > > > unsubscribe: android-kernel+unsubscr...@googlegroups.com >> > > > > website:http://groups.google.com/group/android-kernel >> >> > > -- >> > > unsubscribe: android-kernel+unsubscr...@googlegroups.com >> > > website:http://groups.google.com/group/android-kernel > > -- > unsubscribe: android-kernel+unsubscr...@googlegroups.com > website: http://groups.google.com/group/android-kernel
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