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| author | Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> | 2014-11-06 22:46:13 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-06 14:58:53 -0800 |
| commit | a5f276f10ff70da89b349df445e944c8cd87956c (patch) | |
| tree | 97654f0c9783f14136af81b33a8171deb62ba106 /include/linux/serial_core.h | |
| parent | 7f1dc2f384792f271833cd89a8608d189b63ea6d (diff) | |
| download | lwn-a5f276f10ff70da89b349df445e944c8cd87956c.tar.gz lwn-a5f276f10ff70da89b349df445e944c8cd87956c.zip | |
serial_core: Handle TIOC[GS]RS485 ioctls.
The following drivers: 8250_core, atmel_serial, max310x, mcf, omap-serial
and sci16is7xx implement code to handle RS485 ioctls.
In order to avoid code duplication, we implement a simple ioctl handler
on the serial_core layer.
This handler can be used by all the other drivers instead of duplicating
code.
Until this is the only RS485 ioctl handler, it will try first the
rs485_config callback and if it is not present it will call the driver
specific ioctl.
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/serial_core.h')
| -rw-r--r-- | include/linux/serial_core.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 40b4cc4f8e1d..3231a43f6acf 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -131,6 +131,8 @@ struct uart_port { void (*pm)(struct uart_port *, unsigned int state, unsigned int old); void (*handle_break)(struct uart_port *); + int (*rs485_config)(struct uart_port *, + struct serial_rs485 *rs485); unsigned int irq; /* irq number */ unsigned long irqflags; /* irq flags */ unsigned int uartclk; /* base uart clock */ @@ -231,6 +233,7 @@ struct uart_port { unsigned char unused[2]; struct attribute_group *attr_group; /* port specific attributes */ const struct attribute_group **tty_groups; /* all attributes (serial core use only) */ + struct serial_rs485 rs485; void *private_data; /* generic platform data pointer */ }; |