[LinuxPPS] AMBA driver

[Rodolfo Giometti]

On Tue, Jun 10, 2008 at 12:07:52PM +0200, Gerhard Bertelsmann wrote:

> I'm using a Edimax BR-6104KP board to setup a NTP server. The AMBA 
> serial code is based on serial core.
> I have added following patch:

Thanks for your contribution!

> --- a/drivers/serial/amba-pl010.c    2008-06-04 22:46:36.000000000 +0200
> +++ b/drivers/serial/amba-pl010.c    2008-06-04 22:46:19.000000000 +0200
> @@ -252,7 +260,7 @@
>  
>              status = readl(uap->port.membase + UART010_IIR);
>          } while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
> -                   UART010_IIR_TIS));
> +                   UART010_IIR_TIS | UART010_IIR_MIS));
>          handled = 1;
>      }
>  
> @@ -454,6 +462,12 @@
>      if (UART_ENABLE_MS(port, termios->c_cflag))
>          old_cr |= UART010_CR_MSIE;
>  
> +    if (uap->port.flags & UPF_HARDPPS_CD)
> +    {
> +        printk(KERN_INFO "Serial: AMBA driver:DCD enable (UART010_CR_MSIE)\n");
> +        old_cr |= UART010_CR_MSIE;        /* enable interrupts */
> +    }
> +
>      writel(0, uap->port.membase + UART010_CR);
>  
>      /* Set baud rate */

As you can see we are trying to modify the LinuxPPS code in order to
get ldisc support. By using this new interface the serial interfaces
will change too, that's why I ask you to wait for the new LinuxPPS
release and then repropose your solution again according to the ldisc
code.

Ciao,

Rodolfo

-- 

GNU/Linux Solutions                  e-mail: giometti at enneenne.com
Linux Device Driver                          giometti at linux.it
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