diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/sifive.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/tty/serial/sifive.c b/drivers/tty/serial/sifive.c index d34031e842d0..13eadcb8aec4 100644 --- a/drivers/tty/serial/sifive.c +++ b/drivers/tty/serial/sifive.c @@ -729,6 +729,29 @@ static const char *sifive_serial_type(struct uart_port *port) return port->type == PORT_SIFIVE_V0 ? "SiFive UART v0" : NULL; } +#ifdef CONFIG_CONSOLE_POLL +static int sifive_serial_poll_get_char(struct uart_port *port) +{ + struct sifive_serial_port *ssp = port_to_sifive_serial_port(port); + char is_empty, ch; + + ch = __ssp_receive_char(ssp, &is_empty); + if (is_empty) + return NO_POLL_CHAR; + + return ch; +} + +static void sifive_serial_poll_put_char(struct uart_port *port, + unsigned char c) +{ + struct sifive_serial_port *ssp = port_to_sifive_serial_port(port); + + __ssp_wait_for_xmitr(ssp); + __ssp_transmit_char(ssp, c); +} +#endif /* CONFIG_CONSOLE_POLL */ + /* * Early console support */ @@ -897,6 +920,10 @@ static const struct uart_ops sifive_serial_uops = { .request_port = sifive_serial_request_port, .config_port = sifive_serial_config_port, .verify_port = sifive_serial_verify_port, +#ifdef CONFIG_CONSOLE_POLL + .poll_get_char = sifive_serial_poll_get_char, + .poll_put_char = sifive_serial_poll_put_char, +#endif }; static struct uart_driver sifive_serial_uart_driver = { |