Hi, On 13/01/2012 05:46, Devindrappa Handraki wrote: > Thanks for your reply, the coordinates returned by DevTools are completely > bogus.
Well, then it is not a miscalibrated touchscreen. A miscalibrated touchscreen returns sensible coordinates but not very precise. In your case, my guess is still that you should give "omapfb.rotate=2" kernel parameter a try (or remove it if you are using it.) Maxime > On Wed, Jan 11, 2012 at 8:29 PM, Maxime Ripard < > maxime.rip...@free-electrons.com> wrote: > >> Hi, >> >> On 03/01/2012 06:43, Devindrappa Handraki wrote: >>> 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. >> >> Ok, so it's not a driver thing. >> >> I really think that the screen and the touchscreen aren't oriented in >> the same direction. >> >> Are the coordinates returned by DevTools relatively close to the >> location of your finger, or are they completely bogus ? >> >> Maxime >> >>> On Mon, Jan 2, 2012 at 2:33 PM, Maxime Ripard < >>> maxime.rip...@free-electrons.com> 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 < >>>>> maxime.rip...@free-electrons.com> 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 >>>> >>> >> >> >> -- >> 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: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting
