[LinuxPPS] Patches for kernel 2.6.26-rc8

[Rodolfo Giometti]

On Sun, Jul 06, 2008 at 04:24:49PM -0700, Hal V. Engel wrote:
>    On Sunday 06 July 2008 01:58:59 am Rodolfo Giometti wrote:
>    > On Sun, Jul 06, 2008 at 01:31:38AM -0700, Hal V. Engel wrote:
>    > > I have tested this setup and I am seeing a number of issues. I even
>    > > started over with fresh images just to make sure I had everything
>    > > correct.
>    > >
>    > > First I still have to run setserial on the port to get things to work.
>    > > If I don't the OnCore driver can't communicate with the GPS.
>    >
>    > Please, report the setserial command you used.
>    >
>    > Also, please, add these printk()s into file drivers/serial/8250.c as
>    > follow:
>    >
>    > static void
>    > serial8250_set_ldisc(struct uart_port *port)
>    > {
>    > int line = port->line;
>    >
>    > printk("TEST serial8250_set_ldisc line %d\n", line);
>    > if (line >= port->info->tty->driver->num)
>    > return;
>    >
>    > if (port->info->tty->ldisc.num == N_PPS) {
>    > printk("TEST enable MS ldisc %d\n", port->info->tty->ldisc.num);
>    > serial8250_enable_ms(port);
>    > }
>    > }
>    >
>    > You should see the above messages when you enable the N_PPS ldisc.
>    >
>    > Ciao,
>    >
>    > Rodolfo
> 
>    The messages show up even if I have not run setserial but the ntp OnCore
>    driver does not connect up properly and the reach stays at 0. I definitely
>    have to run setserial before I run ppsldisc for this to work. If I run

Yes, but you don't need "hardpps" option anymore.

>    them in the other order ntp either does not find the PPS signal or does
>    not find the GPS on the serial port.
> 
>    Here is what I get whenI run dmesg:
> 
>    PPS line discipline registered
>    new PPS source serial1 at ID 0
>    PPS source #0 "/dev/ttyS1" added
>    TEST serial8250_set_ldisc line 1
>    TEST enable MS ldisc 18

Correct. This enable the IRQ for the serial port.

Ciao,

Rodolfo

-- 

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