Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S942012AbcJ0QiB (ORCPT ); Thu, 27 Oct 2016 12:38:01 -0400 Received: from mailapp01.imgtec.com ([195.59.15.196]:54907 "EHLO mailapp01.imgtec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936498AbcJ0Qh7 (ORCPT ); Thu, 27 Oct 2016 12:37:59 -0400 From: Ed Blake To: CC: , , , , , , , , , , , , , Ed Blake Subject: [PATCH 1/2] serial: 8250: Expose set_ldisc function Date: Thu, 27 Oct 2016 17:37:27 +0100 Message-ID: <1477586247-15698-1-git-send-email-ed.blake@imgtec.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [192.168.167.2] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3996 Lines: 100 Expose set_ldisc() function so that it can be overridden with a platform specific implementation. Signed-off-by: Ed Blake --- drivers/tty/serial/8250/8250_core.c | 3 +++ drivers/tty/serial/8250/8250_port.c | 12 ++++++++++-- include/linux/serial_8250.h | 4 ++++ include/linux/serial_core.h | 2 ++ 4 files changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 240a361..3ad8c80 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.set_ldisc = p->set_ldisc; uart.port.get_mctrl = p->get_mctrl; uart.port.pm = p->pm; uart.port.dev = &dev->dev; @@ -1023,6 +1024,8 @@ 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.set_ldisc) + uart->port.set_ldisc = up->port.set_ldisc; if (up->port.get_mctrl) uart->port.get_mctrl = up->port.get_mctrl; if (up->port.set_mctrl) diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 1bfb6fd..38c5856 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -2690,8 +2690,7 @@ static unsigned int serial8250_get_baud_rate(struct uart_port *port, serial8250_do_set_termios(port, termios, old); } -static void -serial8250_set_ldisc(struct uart_port *port, struct ktermios *termios) +void serial8250_do_set_ldisc(struct uart_port *port, struct ktermios *termios) { if (termios->c_line == N_PPS) { port->flags |= UPF_HARDPPS_CD; @@ -2707,7 +2706,16 @@ static unsigned int serial8250_get_baud_rate(struct uart_port *port, } } } +EXPORT_SYMBOL(serial8250_do_set_ldisc); +static void +serial8250_set_ldisc(struct uart_port *port, struct ktermios *termios) +{ + if (port->set_ldisc) + port->set_ldisc(port, termios); + else + serial8250_do_set_ldisc(port, termios); +} void serial8250_do_pm(struct uart_port *port, unsigned int state, unsigned int oldstate) diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index 48ec765..f350bf4 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -36,6 +36,8 @@ struct plat_serial8250_port { void (*set_termios)(struct uart_port *, struct ktermios *new, struct ktermios *old); + void (*set_ldisc)(struct uart_port *, + struct ktermios *); unsigned int (*get_mctrl)(struct uart_port *); int (*handle_irq)(struct uart_port *); void (*pm)(struct uart_port *, unsigned int state, @@ -149,6 +151,8 @@ 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 void serial8250_do_set_ldisc(struct uart_port *port, + struct ktermios *termios); 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); diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 3442014..5d49488 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -123,6 +123,8 @@ struct uart_port { void (*set_termios)(struct uart_port *, struct ktermios *new, struct ktermios *old); + void (*set_ldisc)(struct uart_port *, + struct ktermios *); unsigned int (*get_mctrl)(struct uart_port *); void (*set_mctrl)(struct uart_port *, unsigned int); int (*startup)(struct uart_port *port); -- 1.9.1