[LinuxBIOS] [PATCH] Improve ITE IT8716F support.

[ron minnich]

On 2/24/07, Peter Stuge <stuge-linuxbios at cdy.org> wrote:
> On Sat, Feb 10, 2007 at 01:39:37AM +0100, Uwe Hermann wrote:
> > Improve ITE IT8716F support.
>
> @@ -35,55 +38,34 @@
>
>  #define IT8716F_CONFIGURATION_PORT   0x2e /* Write-only. */
>
> -/* The content of IT8716F_CONFIG_REG_LDN (index 0x07) must be set to the
> -   LDN the register belongs to, before you can access the register. */
> -static void it8716f_sio_write(uint8_t ldn, uint8_t index, uint8_t value)
> +/* Perform MB PnP setup to put the SIO chip at 0x2e. */
> +/* Base address 0x2e: 0x87 0x01 0x55 0x55. */
> +/* Base address 0x4e: 0x87 0x01 0x55 0xaa. */
> +static inline void pnp_enter_ext_func_mode(device_t dev)
>  {
> -       outb(IT8716F_CONFIG_REG_LDN, SIO_BASE);
> -       outb(ldn, SIO_DATA);
> -       outb(index, SIO_BASE);
> -       outb(value, SIO_DATA);
> +       unsigned port = dev >> 8;
>
> How does this work? device_t is a pointer to a struct elsewhere:


early stuff that is compiled with  romcc has this device_t typedef'ed
to a scalar.

gcc-compiled has it typedef'ed to a struct *.

This usage will not continue in V3, since all code will be gcc-compiled.

thanks

ron