diff options
| author | Ji-Ze Hong (Peter Hong) <hpeter@gmail.com> | 2018-01-11 14:47:16 +0800 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2018-01-11 11:00:16 +0100 |
| commit | ee0309b46a20304d30c0e0447a2da2a94115731c (patch) | |
| tree | 2bacbdbd321dafcb6ca2eef00358471d8c8b8538 /fs/compat.c | |
| parent | 3aacac02f38543f7a0936fa1e844cd9564b04aaf (diff) | |
| download | linux-ee0309b46a20304d30c0e0447a2da2a94115731c.tar.gz | |
USB: serial: f81534: add auto RTS direction support
The F81532/534 had auto RTS direction support for RS485 mode. We'll read it from internal Flash with address 0x2f01~0x2f04 for 4 ports. There are 4 conditions below: 0: F81534_PORT_CONF_RS232. 1: F81534_PORT_CONF_RS485. 2: value error, default to F81534_PORT_CONF_RS232. 3: F81534_PORT_CONF_RS485_INVERT. F81532/534 Clock register (offset +08h) Bit0: UART Enable (always on) Bit2-1: Clock source selector 00: 1.846MHz. 01: 18.46MHz. 10: 24MHz. 11: 14.77MHz. Bit4: Auto direction(RTS) control (RTS pin Low when TX) Bit5: Invert direction(RTS) when Bit4 enabled (RTS pin high when TX) Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com> [ johan: rename mode-mask define, and only use GENMASK() for masks ] Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'fs/compat.c')
0 files changed, 0 insertions, 0 deletions