diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_port.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 52d82d2ac726..8d262bce97e4 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -368,6 +368,18 @@ static void mem_serial_out(struct uart_port *p, int offset, int value) writeb(value, p->membase + offset); } +static void mem16_serial_out(struct uart_port *p, int offset, int value) +{ + offset = offset << p->regshift; + writew(value, p->membase + offset); +} + +static unsigned int mem16_serial_in(struct uart_port *p, int offset) +{ + offset = offset << p->regshift; + return readw(p->membase + offset); +} + static void mem32_serial_out(struct uart_port *p, int offset, int value) { offset = offset << p->regshift; @@ -425,6 +437,11 @@ static void set_io_from_upio(struct uart_port *p) p->serial_out = mem_serial_out; break; + case UPIO_MEM16: + p->serial_in = mem16_serial_in; + p->serial_out = mem16_serial_out; + break; + case UPIO_MEM32: p->serial_in = mem32_serial_in; p->serial_out = mem32_serial_out; @@ -459,6 +476,7 @@ serial_port_out_sync(struct uart_port *p, int offset, int value) { switch (p->iotype) { case UPIO_MEM: + case UPIO_MEM16: case UPIO_MEM32: case UPIO_MEM32BE: case UPIO_AU: @@ -2462,6 +2480,7 @@ static int serial8250_request_std_resource(struct uart_8250_port *up) case UPIO_TSI: case UPIO_MEM32: case UPIO_MEM32BE: + case UPIO_MEM16: case UPIO_MEM: if (!port->mapbase) break; @@ -2499,6 +2518,7 @@ static void serial8250_release_std_resource(struct uart_8250_port *up) case UPIO_TSI: case UPIO_MEM32: case UPIO_MEM32BE: + case UPIO_MEM16: case UPIO_MEM: if (!port->mapbase) break; |