On Fri, Nov 07, 2008 at 01:00:15PM +0000, Martyn Welch wrote:
> Basic support for the GPIO available on the SBC610 VPX Single Board Computer
> from GE Fanuc (PowerPC MPC8641D).
>
> This patch adds basic support for the GPIO in the devices I/O FPGA, the GPIO
> functionality is exposed through the AFIX pins on the backplane, unless used
> by an AFIX card.
>
> This code currently does not support switching between totem-pole and
> open-drain outputs (when used as outputs, GPIOs default to totem-pole).
> The interrupt capabilites of the GPIO lines is also not currently supported.
>
> Signed-off-by: Martyn Welch <[EMAIL PROTECTED]>
Looks great.
Reviewed-by: Anton Vorontsov <[EMAIL PROTECTED]>
[...]
> +static void gef_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
> +{
> + struct of_mm_gpio_chip *mmchip;
> +
> + /* Find memory mapped gpio chip structure from gpio_chip, this contains
> + * the mapped location of the GPIO controller
> + */
Just nitpicking, you might want to remove this repetitive
comment, it is quite obvious anyway. Will save 5 lines of code per
function, 20 lines in sum.
struct of_mm_gpio_chip *mmchip = to_of_mm_gpio_chip(chip);
> + mmchip = to_of_mm_gpio_chip(chip);
> +
> + _gef_gpio_set(mmchip->regs + GEF_GPIO_OUT, offset, value);
> +
Stray empty line here.
> +}
> +
Thanks,
--
Anton Vorontsov
email: [EMAIL PROTECTED]
irc://irc.freenode.net/bd2
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