diff options
Diffstat (limited to 'drivers/serial/uartlite.c')
| -rw-r--r-- | drivers/serial/uartlite.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c index 9b03d7b3e45..d2fce865b73 100644 --- a/drivers/serial/uartlite.c +++ b/drivers/serial/uartlite.c @@ -44,7 +44,7 @@ MODULE_DEVICE_TABLE(of, ulite_of_match); * Register definitions * * For register details see datasheet: - * http://www.xilinx.com/bvdocs/ipcenter/data_sheet/opb_uartlite.pdf + * http://www.xilinx.com/support/documentation/ip_documentation/opb_uartlite.pdf */ #define ULITE_RX 0x00 @@ -322,6 +322,26 @@ static int ulite_verify_port(struct uart_port *port, struct serial_struct *ser) return -EINVAL; } +#ifdef CONFIG_CONSOLE_POLL +static int ulite_get_poll_char(struct uart_port *port) +{ + if (!(ioread32be(port->membase + ULITE_STATUS) + & ULITE_STATUS_RXVALID)) + return NO_POLL_CHAR; + + return ioread32be(port->membase + ULITE_RX); +} + +static void ulite_put_poll_char(struct uart_port *port, unsigned char ch) +{ + while (ioread32be(port->membase + ULITE_STATUS) & ULITE_STATUS_TXFULL) + cpu_relax(); + + /* write char to device */ + iowrite32be(ch, port->membase + ULITE_TX); +} +#endif + static struct uart_ops ulite_ops = { .tx_empty = ulite_tx_empty, .set_mctrl = ulite_set_mctrl, @@ -338,7 +358,11 @@ static struct uart_ops ulite_ops = { .release_port = ulite_release_port, .request_port = ulite_request_port, .config_port = ulite_config_port, - .verify_port = ulite_verify_port + .verify_port = ulite_verify_port, +#ifdef CONFIG_CONSOLE_POLL + .poll_get_char = ulite_get_poll_char, + .poll_put_char = ulite_put_poll_char, +#endif }; /* --------------------------------------------------------------------- |