[PATCH] mtd: gpmi: add gpmi_devdata{} to simplify the code

[Brian Norris]

On Fri, Mar 21, 2014 at 06:19:39PM +0800, Huang Shijie wrote:
> More and more chips use the GPMI controller, but these chips may use different
> version of the IPs for GPMI and BCH. Different IPs have
>  different features, such as the BCH's maximum ECC strength:
> 
>      imx23/imx28 -- the BCH's maximum ECC strength is 20
>      imx6q       -- the BCH's maximum ECC strength is 40
>      imx6sx      -- the BCH's maximum ECC strength is 62
> 
> This patch does the following things:
> 
>   [1] add a new data structure, gpmi_devdata{}, to store the information for
>       each IP. Besides the IP version, we store the following information:
>          <1> BCH's maximum ECC strength.
>          <2> the maximum chain delay in ns used by the EDO mode.
> 
>       but we may add more information in future.
> 
>   [2] add the gpmi_devdata_imx{23|28|6q} to replace the gpmi_ids.
> 
>   [3] simplify the code by using the ECC strength from gpmi_devdata, such as
>       gpmi_check_ecc() and legacy_set_geometry();
> 
>   [4] use the maximum chain delay to initialize the EDO mode,
>       see gpmi_compute_edo_timing().
> 
>   [5] rewrite the macros, such GPMI_IS_MX{23|28|6Q}.
> 
> Signed-off-by: Huang Shijie <b32955 at freescale.com>

Pushed to l2-mtd.git. Thanks!

Brian