Hi, Dang,
We’re using driver/video/mxc/mxc_ipuv3_fb.c as framebuffer driver, and I think
the only thing I should do is modify check_var to re-define fb_bitfield, right?
Or I should modify other file? Could you please give a example or further tips?
Thanks a lot!
BR,
Qingwei
From: Tung Dang
Sent: Friday, September 09, 2011 8:42 AM
To: lqw1...@gmail.com
Cc: android-porting
Subject: Re: [android-porting] i.MX51 BBG: How to swap red color with blue on
DISP2 (RGB565 -> BGR565)
Hi Qingwei,
The correct way is to modify in your frame buffer display driver , just swap
between B and R
The frame buffer display driver is in your linux kernel driver
/linux-xxx/drivers/video
Regards,
Tung
On Thu, Sep 8, 2011 at 8:43 PM, <lqw1...@gmail.com> wrote:
Hi,
Now I have to use BGR565 instead of RGB565, so I modified following codes,
but they have no effect.
file:
mxc_ipuv3_fb.c, function: mxcfb_check_var
......
switch
(var->bits_per_pixel) {
case 8:
......
break;
case 16:
var->red.length = 5;
var->red.offset = 11; ----> 0
var->red.msb_right = 0;
var->green.length = 6;
var->green.offset = 5;
var->green.msb_right = 0;
var->blue.length = 5;
var->blue.offset = 0; ---->11
var->blue.msb_right = 0;
......
break;
case 24:
......
And then, I modified _ipu_ch_params_set_packing in
drivers/mxc/ipu3/ipu_param_mem.h, and found the color of UI is correct, but
camera preview/taking photo/recording, video playing are not correct (R and B
color are reversed).
I think the best way is to modify framebuffer, but I don’t know how to do.
Does anyone have some ideas?
BR,
Qingwei
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