Implementing NAND driver on a PrimeCell SMC PL350 series

[Ricard Wanderlof]

On Sat, 12 Jan 2013, Daniel Tang wrote:

> I didn't know high level functions could be overridden. Most of the 
> drivers I looked through didn't override the 'nand_command' function for 
> example, so I wasn't aware it was possible.

A long time ago, the functions in nand_base.c were marked with things like 
"REPLACABLE" or somesuch to show that they could be replaced with 
user-defined functions.

I guess you have to read through things like nand_scan_defaults() e.g.

         /* check, if a user supplied command function given */
         if (chip->cmdfunc == NULL)
                chip->cmdfunc = nand_command;

etc to get an idea of what to replace.

Of course, if the existing driver framwork is not flexible enough for 
your needs, patches are always welcome.

> As per your advice, I also read through some of the other NAND drivers. 
> Although they didn't have anything similar to what I need, I have a good 
> idea of where to head.

Ok, good!

/Ricard
-- 
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
Phone +46 46 272 2016                           Fax +46 46 13 61 30