Hi Maxime Ripard, Yes touchscreen controller is the AD7846, i think it might be problem with calibrating the touchscreen. because in home screen if i touch on one application it will launch some other application. I also tested the calibration by running the "Dev Tool->Pointer Location " application its giving wrong coordination. please suggest me if it is touchscreen calibration problem, than how to calibrate the touchscreen.
Thanks and Regards, Devindrappa On Mon, Jan 2, 2012 at 2:33 PM, Maxime Ripard < [email protected]> wrote: > Hi, > > On 27/12/2011 07:53, Devindrappa Handraki wrote: > > Thanks for your suggestion, now i am able to port the 7" LCD to > > devkit8000. now devkit8000 is booting with Android gingerbread > > Great :) > > > but touch screen is not working, please help me. > > How does it not work ? Do you have some events, is it sending bogus > inputs or is it just that is it barely usable ? > > If you have no input at all, I guess the touchscreen controller is the > AD7846, check that you have the proper driver compiled with the kernel. > > If you have bogus input values, you should check that the touchscreen > orientation wrt the screen is correct. Like I was saying, for the 4.3", > the touchscreen was upside down, it might or might not be the case for 7". > > If it is barely usable, then you will have to calibrate the touchscreen. > > Maxime > > > On Fri, Dec 16, 2011 at 7:48 PM, Maxime Ripard < > > [email protected]> wrote: > > > >> Hi, > >> > >> For what it's worth, on the Devkit8000, I found linaro's android > >> releases pretty useful, for a number of reasons, most importants to me > >> being that you have a kernel and an Android up-to-date. However, I have > >> not worked with rowboat, so I'm probably a bit off-topic here. > >> > >> Moreover, in recent Linux kernels, I guess I saw support for the 7" > >> display as well, so this should be pretty straightforward in your case. > >> > >> I have worked with the 4.3" screen, so you would maybe need to tweak > >> some stuff here. > >> > >> If you take, from beagle builds, all you need to do is : > >> - make sure you have a u-boot for devkit8000 and not for beagle, or > >> you will have some glitches with the screen. > >> - once you are done, you should change the bootargs to boot on the lcd > >> with the correct resolution. That should give something like : > >> omapdss.def_disp=lcd omapfb.mode=lcd:480x242MR24@60 (change 480x272 by > >> 800x480) > >> - Now, you will maybe find that the touchscreen is bogus. On the 4.3", > >> the touchscreen and the display are not oriented in the same direction, > >> so add to your bootargs omapdss.rotate=2 > >> > >> Once this is done, you should have a fully working gingerbread on your > >> devkit8000 :) > >> > >> Maxime > >> > >> On 16/12/2011 14:39, devu wrote: > >>> Hi all, > >>> > >>> I am working on devkit8000, I have ported the demo image of android > >>> 1.5 on devkit8000 successfully with 7" LCD display. And Now i am > >>> trying to port android 2.2(Froyo) on devkit8000,which has been > >>> downloaded from rowboat android. The problem is 7" LCD display is not > >>> supported with android 2.2(froyo). please suggest me how to make 7" > >>> LCD display supports with android 2.2(froyo) on devkit8000. > >>> > >>> Thanks in advanced > >>> Devindrappa > >>> > >> > >> > >> -- > >> Maxime Ripard, Free Electrons > >> Kernel, drivers, real-time and embedded Linux > >> development, consulting, training and support. > >> http://free-electrons.com > >> > > > > > -- > Maxime Ripard, Free Electrons > Kernel, drivers, real-time and embedded Linux > development, consulting, training and support. > http://free-electrons.com > -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting
