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Documentation: Make formatting consistent for rs485 docs

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Tweak styling of names that come directly from the code.

Suggested-by: Bagas Sanjaya <bagasdotme@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/20221019093343.9546-6-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen 2022-10-19 12:33:43 +03:00 committed by Greg Kroah-Hartman
parent 891e999394
commit 7b1c56e08a
1 changed files with 19 additions and 18 deletions
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37
Documentation/driver-api/serial/serial-rs485.rst
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@ -39,15 +39,15 @@ RS485 Serial Communications
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
struct uart_port. The serial core calls rs485_config to do the device
specific part in response to TIOCSRS485 ioctl (see below). The
rs485_config callback receives a pointer to a sanitizated struct
implement the ``rs485_config`` callback and provide ``rs485_supported``
in the ``struct uart_port``. The serial core calls ``rs485_config`` to do
the device specific part in response to TIOCSRS485 ioctl (see below). The
``rs485_config`` callback receives a pointer to a sanitizated struct
serial_rs485. The struct serial_rs485 userspace provides is sanitized
before calling rs485_config using rs485_supported that indicates what
RS485 features the driver supports for the struct uart_port. TIOCGRS485
ioctl can be used to read back the struct serial_rs485 matching to the
current configuration.
before calling ``rs485_config`` using ``rs485_supported`` that indicates
what RS485 features the driver supports for the ``struct uart_port``.
TIOCGRS485 ioctl can be used to read back the struct serial_rs485
matching to the current configuration.
.. kernel-doc:: include/uapi/linux/serial.h
:identifiers: serial_rs485 uart_get_rs485_mode
@ -108,23 +108,24 @@ RS485 Serial Communications
========================
The Linux kernel provides addressing mode for multipoint RS-485 serial
communications line. The addressing mode is enabled with SER_RS485_ADDRB
flag in struct serial_rs485. The struct serial_rs485 has two additional
flags and fields for enabling receive and destination addresses.
communications line. The addressing mode is enabled with
``SER_RS485_ADDRB`` flag in struct serial_rs485. The struct serial_rs485
has two additional flags and fields for enabling receive and destination
addresses.
Address mode flags:
- SER_RS485_ADDRB: Enabled addressing mode (sets also ADDRB in termios).
- SER_RS485_ADDR_RECV: Receive (filter) address enabled.
- SER_RS485_ADDR_DEST: Set destination address.
- ``SER_RS485_ADDRB``: Enabled addressing mode (sets also ADDRB in termios).
- ``SER_RS485_ADDR_RECV``: Receive (filter) address enabled.
- ``SER_RS485_ADDR_DEST``: Set destination address.
Address fields (enabled with corresponding SER_RS485_ADDR_* flag):
- addr_recv: Receive address.
- addr_dest: Destination address.
Address fields (enabled with corresponding ``SER_RS485_ADDR_*`` flag):
- ``addr_recv``: Receive address.
- ``addr_dest``: Destination address.
Once a receive address is set, the communication can occur only with the
particular device and other peers are filtered out. It is left up to the
receiver side to enforce the filtering. Receive address will be cleared
if SER_RS485_ADDR_RECV is not set.
if ``SER_RS485_ADDR_RECV`` is not set.
Note: not all devices supporting RS485 support multipoint addressing.