Documentation: rs485: Mention uart_get_rs485_mode()

Add to rs485 documentation that serial core prepares the struct
serial_rs485 when uart_get_rs485_mode() is called. Remove the wrong
claim that the driver must fill it by itself.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20221019093343.9546-4-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen 2022-10-19 12:33:41 +03:00 committed by Greg Kroah-Hartman
parent 851453abc8
commit 0f4648a1a6

View File

@ -34,8 +34,9 @@ RS485 Serial Communications
parameters in the platform data and in ioctls.
The device tree can also provide RS485 boot time parameters
[#DT-bindings]_. The driver is in charge of filling this data structure
from the values given by the device tree.
[#DT-bindings]_. The serial core fills the struct serial_rs485 from the
values given by the device tree when the driver calls
uart_get_rs485_mode().
Any driver for devices capable of working both as RS232 and RS485 should
implement the rs485_config callback and provide rs485_supported in the
@ -48,7 +49,7 @@ RS485 Serial Communications
serial_rs485 structure matching to the current configuration.
.. kernel-doc:: include/uapi/linux/serial.h
:identifiers: serial_rs485
:identifiers: serial_rs485 uart_get_rs485_mode
4. Usage from user-level
========================