Regarding GPIO driver module

[Prabhakar Lad]

Hi,

On Wed, Mar 6, 2013 at 12:23 PM, Rajesh Bhaskaran
<cb.rajesh.in at gmail.com> wrote:
> Hi all ,
>
> I was trying to write a GPIO driver module for Hawkboard , in order to
> toggle the LEDs connected to the GPIOs .
>
> I am using a OMAP L138 processor , and am trying to do a ioremap of the
> physical address space to the Kernel's virtual address space . But I guess I
> am not able to figure out the exact base address of the GPIO bank .
>
> I am basically trying to toggle the GPIO Bank 6 . I went through the OMAP
> L138 reference manual , but am unable to find the base address . Afterwards
> I plan to use the ioctl function to toggle the LEDs .
>
> Attaching herewith the link to the OMAP L138 reference manual . Reference
> manual : www.ti.com/lit/ug/spruh77a/spruh77a.pdf
>
> Could anyone kindly guide me , on the procedure to decipher the Baseaddress
> of the GPIO Bank 6 from the Reference manual ?
>
You need to go through the memory map of the device refer[1] for this.
In [1] refer table 2-4 you will find the entire memory map including GPIO.
For GPIO refer this [2] too.

Regards,
--Prabhakar Lad
http://in.linkedin.com/pub/prabhakar-lad/19/92b/955

[1] http://www.ti.com/lit/ds/sprs586d/sprs586d.pdf
[2] http://www.ti.com/lit/ug/sprufl8b/sprufl8b.pdf
> Thanks in advance !
>
> Cheers ,
> ~RCB~
>
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