[U-Boot] Remove board specific code from ENC28J60 network driver?

[Mike Frysinger <vapier@gentoo.org>]

On Friday 25 December 2009 13:57:55 Dirk Behme wrote:
> I started to convert the enc28j60.c to common SPI framework. Do you
> like to have a look at attachment (and maybe test it?)?
> 
> It is compile tested only. And for the moment it just re-uses the
> existing driver. When we know that it basically works this way, doing
> it in a clean way as you describe above would be the next step.
> CONFIG_NET_MULTI is still missing, too.

spi_lock/spi_unlock should redirect to spi_claim_bus/spi_release_bus.  this 
isnt so much an "interrupts" issue as the process of claiming the bus 
reprograms the controller with the slave settings.

> In your config file you have to set and configure
> 
> #define CONFIG_xxx_SPI
> #define CONFIG_ENC28J60
> #define CONFIG_ENC28J60_SPI_BUS		0
> #define CONFIG_ENC28J60_SPI_CS		0
> #define CONFIG_ENC28J60_SPI_CLK		1000000
> #define CONFIG_CMD_NET
> 
> for your board.

this is ok with the current design, but broken for NET_MULTI.  when converted 
to NET_MULTI, the new enc28j60_register() function will take the spi settings 
as function arguments.  so the function would look something like:
int enc28j60_register(bd_t *bis, unsigned int spi_bus, unsigned int spi_cs, 
unsigned int max_hz, unsigned int mode);

and it'd be up to the board to call it with the settings it wants
-mike