Re: [PATCH 2/4 v8] i.MX31: Image Processing Unit DMA and IRQ drivers

[Guennadi Liakhovetski <g.liakhovetski@gmx.de>]

On Fri, 23 Jan 2009, Valentin Longchamp wrote:

> > root@mx31moboard:~# ls -al /sys/bus/platform/drivers
> > drwxr-xr-x    6 root     root            0 Oct 16 13:50 .
> > drwxr-xr-x    4 root     root            0 Jan  1  1970 ..
> > drwxr-xr-x    2 root     root            0 Jan  1  1970 generic-bl
> > drwxr-xr-x    2 root     root            0 Jan  1  1970 imx-uart
> > drwxr-xr-x    2 root     root            0 Oct 16 14:05 mx3_sdc_fb
> > drwxr-xr-x    2 root     root            0 Jan  1  1970 physmap-flash
> 
> So the devices are registered fine. My problem is that the driver is not
> registered for me: This should be done by the subsys_initcall but
> ipu_init is never called.

Are you sure you have CONFIG_MX3_IPU=y?... sorry, I don't see any other 
possibility why a subsys_initcall() would not be called. You can also 
check if it's being compiled and linked, and if you do

arm-linux-objdump -Dr vmlinux |grep ipu_init

you should see something like

c0014c94 <ipu_init>:
c0014c94:       e1a0c00d        mov     ip, sp
--
c0019c70 <__initcall_ipu_init4>:
c0019c70:       c0014c94        mulgt   r1, r4, ip

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer

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