diff options
Diffstat (limited to 'drivers/usb/serial/xr_serial.c')
| -rw-r--r-- | drivers/usb/serial/xr_serial.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/serial/xr_serial.c b/drivers/usb/serial/xr_serial.c index 183731cd2ef7..f67e7dba9509 100644 --- a/drivers/usb/serial/xr_serial.c +++ b/drivers/usb/serial/xr_serial.c @@ -502,6 +502,7 @@ static void xr_set_termios(struct tty_struct *tty, static int xr_open(struct tty_struct *tty, struct usb_serial_port *port) { + u8 gpio_dir; int ret; ret = xr_uart_enable(port); @@ -510,6 +511,13 @@ static int xr_open(struct tty_struct *tty, struct usb_serial_port *port) return ret; } + /* + * Configure DTR and RTS as outputs and RI, CD, DSR and CTS as + * inputs. + */ + gpio_dir = XR21V141X_UART_MODE_DTR | XR21V141X_UART_MODE_RTS; + xr_set_reg_uart(port, XR21V141X_REG_GPIO_DIR, gpio_dir); + /* Setup termios */ if (tty) xr_set_termios(tty, port, NULL); |