> (please CC me in your replies as I am not suscribed to the ML)
>
> The following patch allows users to use KGDB over serial console on
> board based on Samsung SOC. It has been tested on a mini2440.
>
> Signed-off-by: Julien Pichon <pichon.jln@xxxxxxxxx>
> ---
> drivers/tty/serial/samsung.c | 50 ++++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 50 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
> index f96f37b..9f703ca 100644
> --- a/drivers/tty/serial/samsung.c
> +++ b/drivers/tty/serial/samsung.c
> @@ -877,11 +877,24 @@ s3c24xx_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
>
> static struct console s3c24xx_serial_console;
>
> +static int __init s3c24xx_serial_console_init(void)
> +{
> + register_console(&s3c24xx_serial_console);
> + return 0;
> +}
> +console_initcall(s3c24xx_serial_console_init);
> +
> #define S3C24XX_SERIAL_CONSOLE &s3c24xx_serial_console
> #else
> #define S3C24XX_SERIAL_CONSOLE NULL
> #endif
>
> +#ifdef CONFIG_CONSOLE_POLL
> +static int s3c24xx_serial_get_poll_char(struct uart_port *port);
> +static void s3c24xx_serial_put_poll_char(struct uart_port *port,
> + unsigned char c);
> +#endif
> +
> static struct uart_ops s3c24xx_serial_ops = {
> .pm = s3c24xx_serial_pm,
> .tx_empty = s3c24xx_serial_tx_empty,
> @@ -900,6 +913,10 @@ static struct uart_ops s3c24xx_serial_ops = {
> .request_port = s3c24xx_serial_request_port,
> .config_port = s3c24xx_serial_config_port,
> .verify_port = s3c24xx_serial_verify_port,
> +#ifdef CONFIG_CONSOLE_POLL
> + .poll_get_char = s3c24xx_serial_get_poll_char,
> + .poll_put_char = s3c24xx_serial_put_poll_char,
> +#endif
> };
>
> static struct uart_driver s3c24xx_uart_drv = {
> @@ -1311,6 +1328,39 @@ s3c24xx_serial_console_txrdy(struct uart_port *port, unsigned int ufcon)
> return (utrstat & S3C2410_UTRSTAT_TXE) ? 1 : 0;
> }
>
> +#ifdef CONFIG_CONSOLE_POLL
> +/*
> + * Console polling routines for writing and reading from the uart while
> + * in an interrupt or debug context.
> + */
> +
> +static int s3c24xx_serial_get_poll_char(struct uart_port *port)
> +{
> + struct s3c24xx_uart_port *ourport = to_ourport(port);
> + unsigned int ufstat, count;
> +
> + do {
> + ufstat = rd_regl(port, S3C2410_UFSTAT);
> + count = s3c24xx_serial_rx_fifocnt(ourport, ufstat);
> + if (!count)
> + cpu_relax();
> + } while (!count);
> +
> + return rd_regb(port, S3C2410_URXH);
> +}
> +
> +static void s3c24xx_serial_put_poll_char(struct uart_port *port,
> + unsigned char c)
> +{
> + unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
> +
> + while (!s3c24xx_serial_console_txrdy(port, ufcon))
> + cpu_relax();
> + wr_regb(cons_uart, S3C2410_UTXH, c);
> +}
> +
> +#endif /* CONFIG_CONSOLE_POLL */
> +
> static void
> s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
> {
> --
> 1.7.2.5
>
>
(CC maintainers)
Someone has time to review this patch ?
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