Re: [cx231xx] Support for Arm / Omap working at all?

[Yan Seiner <yan@seiner.com>]

Devin Heitmueller wrote:
> On Tue, Jan 22, 2013 at 4:38 AM, Jan Stumpf <Jan.Stumpf@asctec.de> wrote:
>   
>> Thanks!
>>
>> I will try it with your patches!
>>
>> Regards
>> Jan
>>     
>
> FYI:  the cx231xx driver has worked in the past on ARM platforms,
> although I haven't tried the USBLive2 on OMAP specifically.  In fact,
> I merged the original driver support upstream as part of a project I
> did while developing a product that has it running on ARM.
>
> You may wish to try whatever kernel you have on an x86 platform, as
> people have a history of introducing regressions for the USBLive 2 in
> the past (I've fixed it multiple times since I originally submitted
> the support upstream).  It's possible that it's broken on x86 as well,
> and has nothing to do with your being on ARM at all.
>
> Regards,
>
> Devin
>
>   
I submitted this patch some time ago.  It fixes the driver for 
endiannes.  Without it will try to allocate some random amount of 
memory.  It was in the kernel for a little then it disappeared....

diff -U3 
/data10/home/yan/openwrt/backfire/trunk/build_dir/linux-brcm47xx/linux-3.0.3/drivers/media/video/cx231xx/cx231xx-pcb-cfg.c 
cx231xx-pcb-cfg.c
--- 
/data10/home/yan/openwrt/backfire/trunk/build_dir/linux-brcm47xx/linux-3.0.3/drivers/media/video/cx231xx/cx231xx-pcb-cfg.c    
2011-08-17 10:57:16.000000000 -0700
+++ cx231xx-pcb-cfg.c    2011-12-13 05:50:36.000000000 -0800
@@ -672,7 +672,9 @@
    pcb config it is related to */
    cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, BOARD_CFG_STAT, data, 4);

-    config_info = *((u32 *) data);
+    //config_info = *((u32 *) data);
+    config_info = ((u32)(*(data))) + (((u32)(*(data+1))) << 8) + 
(((u32)(*(data+2))) << 16) + (((u32)(*(data+3))) << 24);
+    cx231xx_info("config_info %x\n",config_info);
    usb_speed = (u8) (config_info & 0x1);

    /* Verify this device belongs to Bus power or Self power device */