kernel/include/uapi/asm-generic/termbits-common.h, branch linux-6.11.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-6.11.y2022-06-27T12:44:20Zserial: Support for RS-485 multipoint addresses2022-06-27T12:44:20ZIlpo Järvinenilpo.jarvinen@linux.intel.com2022-06-24T20:42:09Zurn:sha1:4f768e94774c58c9f7f54ebd38dadf172970046a
Add support for RS-485 multipoint addressing using 9th bit [*]. The
addressing mode is configured through ->rs485_config().
ADDRB in termios indicates 9th bit addressing mode is enabled. In this
mode, 9th bit is used to indicate an address (byte) within the
communication line. ADDRB can only be enabled/disabled through
->rs485_config() that is also responsible for setting the destination and
receiver (filter) addresses.
Add traps to detect unwanted changes to struct serial_rs485 layout using
static_assert().
[*] Technically, RS485 is just an electronic spec and does not itself
specify the 9th bit addressing mode but 9th bit seems at least
"semi-standard" way to do addressing with RS485.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220624204210.11112-6-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
termbits.h: create termbits-common.h for identical bits2022-05-19T16:25:25ZIlpo Järvinenilpo.jarvinen@linux.intel.com2022-05-09T09:34:44Zurn:sha1:0b46ac44f2673be2ee51bb52149cab3546ff1696
Some defines are the same across all archs. Move the most obvious
intersection to termbits-common.h.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220509093446.6677-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>