diff options
| author |   Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com> | 2016-04-06 12:06:51 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-30 09:26:55 -0700 |
| commit | 144ef5c2df9b473dad7eab375adcf5b11d0b1e47 (patch) | |
| tree | 432a465af40a3ce4d1a99eb74ab947f4dd2519bc | |
| parent | TTY: serial/ifx6x60, initialize more (diff) | |
| download | linux-dev-144ef5c2df9b473dad7eab375adcf5b11d0b1e47.tar.xz linux-dev-144ef5c2df9b473dad7eab375adcf5b11d0b1e47.zip | |
serial: 8250: export get_mctrl function
Exposes get_mctrl() function so that it can be overriden with platform
specific implementation.
Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/8250/8250_core.c | 3 | ||||
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 10 | ||||
| -rw-r--r-- | include/linux/serial_8250.h | 2 | ||||
| -rw-r--r-- | include/linux/serial_core.h | 1 |
4 files changed, 15 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 2f4f5ee651db..0fbd7c033a25 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -830,6 +830,7 @@ static int serial8250_probe(struct platform_device *dev) uart.port.handle_irq = p->handle_irq; uart.port.handle_break = p->handle_break; uart.port.set_termios = p->set_termios; + uart.port.get_mctrl = p->get_mctrl; uart.port.pm = p->pm; uart.port.dev = &dev->dev; uart.port.irqflags |= irqflag; @@ -1022,6 +1023,8 @@ int serial8250_register_8250_port(struct uart_8250_port *up) /* Possibly override set_termios call */ if (up->port.set_termios) uart->port.set_termios = up->port.set_termios; + if (up->port.get_mctrl) + uart->port.get_mctrl = up->port.get_mctrl; if (up->port.set_mctrl) uart->port.set_mctrl = up->port.set_mctrl; if (up->port.startup) diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 00ad2637b08c..a803ddfd5a59 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1882,7 +1882,7 @@ static unsigned int serial8250_tx_empty(struct uart_port *port) return (lsr & BOTH_EMPTY) == BOTH_EMPTY ? TIOCSER_TEMT : 0; } -static unsigned int serial8250_get_mctrl(struct uart_port *port) +unsigned int serial8250_do_get_mctrl(struct uart_port *port) { struct uart_8250_port *up = up_to_u8250p(port); unsigned int status; @@ -1903,6 +1903,14 @@ static unsigned int serial8250_get_mctrl(struct uart_port *port) ret |= TIOCM_CTS; return ret; } +EXPORT_SYMBOL_GPL(serial8250_do_get_mctrl); + +static unsigned int serial8250_get_mctrl(struct uart_port *port) +{ + if (port->get_mctrl) + return port->get_mctrl(port); + return serial8250_do_get_mctrl(port); +} void serial8250_do_set_mctrl(struct uart_port *port, unsigned int mctrl) { diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index 434879759725..48ec7651989b 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -36,6 +36,7 @@ struct plat_serial8250_port { void (*set_termios)(struct uart_port *, struct ktermios *new, struct ktermios *old); + unsigned int (*get_mctrl)(struct uart_port *); int (*handle_irq)(struct uart_port *); void (*pm)(struct uart_port *, unsigned int state, unsigned old); @@ -148,6 +149,7 @@ extern int early_serial8250_setup(struct earlycon_device *device, const char *options); extern void serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermios *old); +extern unsigned int serial8250_do_get_mctrl(struct uart_port *port); extern int serial8250_do_startup(struct uart_port *port); extern void serial8250_do_shutdown(struct uart_port *port); extern void serial8250_do_pm(struct uart_port *port, unsigned int state, diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index fd4ad4dce11a..a3d7c0d4a03e 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -123,6 +123,7 @@ struct uart_port { void (*set_termios)(struct uart_port *, struct ktermios *new, struct ktermios *old); + unsigned int (*get_mctrl)(struct uart_port *); void (*set_mctrl)(struct uart_port *, unsigned int); int (*startup)(struct uart_port *port); void (*shutdown)(struct uart_port *port); |