2008-12-08 22:24:29 TFT_LCD drive problem
*** li (CHINA)
Message: 66531
我将内核提供的linux-2.6.x\drivers\video\bfin-t350mcqb-fb.c
我写了一个TFT的驱动，运行测试程序的时候，色彩不对，并且图像靠左边偏，右边有一条黑屏。
请问可能是什么原因，如何修改？希望做过Lcd驱动的朋友能给点意见，谢谢。
我的驱动是在linux-2.6.x\drivers\video\bfin-t350mcqb-fb.c修改得到的。效果图片见附件(一个是我改的驱动效果图，另一个是不带系统驱动效果图)
I writed a tft drive ,when use the test program to test it , the colour is not right ,and the position of the image is not in the right place,it moves to the left side and left a blackbar on the right side .
I have attached the picture in the appendix.(the picture of 'drive_with_uclinux.JPG 'is test by my drive ,the picture of 'drive_without_system.JPG' test by the drive without system which is a right drive )
Why it like this , and how to fix it ?
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2008-12-08 22:31:31 Re: TFT_LCD drive problem
Mike Frysinger (UNITED STATES)
Message: 66534
are you sure your color settings (and bit mode) actually match the hardware ?
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2008-12-09 03:33:21 Re: TFT_LCD drive problem
*** li (CHINA)
Message: 66543
Do you mean this?
fbinfo->var.red.offset = 0;
fbinfo->var.green.offset = 8;
fbinfo->var.blue.offset = 16;
fbinfo->var.transp.offset = 0;
fbinfo->var.red.length = 8;
fbinfo->var.green.length = 8;
fbinfo->var.blue.length = 8;
fbinfo->var.transp.length = 0;
I am sure it is right .
my boar is bf533-ezkit + DIMA ssk exten board .the TFT is TS35ND1501.
Would check my program ,please?
I have deal with this problem for a long time ,and I can't fix it .
my_lcd_test.c
bfin-ts35nd-fb1035.c
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2008-12-09 07:47:34 Re: TFT_LCD drive problem
Robin Getz (UNITED STATES)
Message: 66559
***:
Dima supports their own boards, and does not share anything (hardware or drivers with us) - did you ask them first? They are really the only people who can help (since we don't have access to schematics either).
-Robin