On Tue, 2007-04-24 at 13:22 +0100, Christoph Hellwig wrote:
> > +static void esp_build_sync_msg(struct esp *esp, u8 period, u8
> offset)
> > {
> > + esp->msg_out[0] = EXTENDED_MESSAGE;
> > + esp->msg_out[1] = 3;
> > + esp->msg_out[2] = EXTENDED_SDTR;
> > + esp->msg_out[3] = period;
> > + esp->msg_out[4] = offset;
> > + esp->msg_out_len = 5;
> > +}
> >
> > +static void esp_build_wide_msg(struct esp *esp, int wide)
> > +{
> > + esp->msg_out[0] = EXTENDED_MESSAGE;
> > + esp->msg_out[1] = 2;
> > + esp->msg_out[2] = EXTENDED_WDTR;
> > + esp->msg_out[3] = (wide ? 1 : 0);
> > + esp->msg_out_len = 4;
> > }
>
> These might actually be worth putting into the spi transport
> class, taking an u8 * as first argument. After all all
> SPI drivers without smart firmware will need them.
This was going to be my comment ... they're already there:
int spi_populate_width_msg(unsigned char *msg, int width);
int spi_populate_sync_msg(unsigned char *msg, int period, int offset);
int spi_populate_ppr_msg(unsigned char *msg, int period, int offset, int width,
int options);
James
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