On Wed, Aug 13, 2008 at 3:27 AM, Atsuo Igarashi
<atsuo_igarashi@xxxxxxxxxxxxxx> wrote:
> Add console polling routines for the imx uart with kgdboc.
>
> Signed-off-by Atsuo Igarashi <atsuo_igarashi@xxxxxxxxxxxxxx>
>
In imx_get_poll_char() the code returns the result of reading the urxd
register. That register has the 8 bits of receive data in it, but in
the next byte up also has 4 bits of error flags (overrun, frame,
break, parity) and an error summary bit which are being ignored.
Maybe something like this?
static int imx_get_poll_char(struct uart_port *port)
{
struct imx_port *sport = (struct imx_port *)port;
int ch;
while (1) {
while (!(readl(sport->port.membase + USR2) & USR2_RDR));
ch = readl(sport->port.membase + URXD0);
if (!(ch & URXD_ERR))
return(ch & 0xff);
/* else throw away the char with the error and try
again (or return an error value?) */
}
}
--
Hardware, n.:
The parts of a computer system that can be kicked.
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