diff options
Diffstat (limited to 'drivers/serial/8250.c')
| -rw-r--r-- | drivers/serial/8250.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 0995430e4cf..5443fcd3835 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -299,6 +299,7 @@ static inline int map_8250_out_reg(struct uart_8250_port *up, int offset) static unsigned int serial_in(struct uart_8250_port *up, int offset) { + unsigned int tmp; offset = map_8250_in_reg(up, offset) << up->port.regshift; switch (up->port.iotype) { @@ -317,6 +318,13 @@ static unsigned int serial_in(struct uart_8250_port *up, int offset) return __raw_readl(up->port.membase + offset); #endif + case UPIO_TSI: + if (offset == UART_IIR) { + tmp = readl((u32 *)(up->port.membase + UART_RX)); + return (cpu_to_le32(tmp) >> 8) & 0xff; + } else + return readb(up->port.membase + offset); + default: return inb(up->port.iobase + offset); } @@ -346,6 +354,10 @@ serial_out(struct uart_8250_port *up, int offset, int value) __raw_writel(value, up->port.membase + offset); break; #endif + case UPIO_TSI: + if (!((offset == UART_IER) && (value & UART_IER_UUE))) + writeb(value, up->port.membase + offset); + break; default: outb(value, up->port.iobase + offset); |