2018-06-04 13:12 GMT+03:00 Andy Shevchenko <andriy.shevche...@linux.intel.com>: > On Fri, 2018-06-01 at 14:40 +0200, Giulio Benetti wrote: >> Need to handle rs485 with 8250_dw port. >> >> Use existing em485 emulation layer for 8250 taking care to fix some >> bug >> and taking care especially of RTS_AFTER_SEND case. >> > > I don't see in Cc list author of rs485 code, who might be interested in > this. > > So, added him here. >
Hi, Andy Nice to see you there. I will look through the code later. I always thought that DW has its own hardware rs485 support. >> Giulio Benetti (8): >> serial: 8250_dw: add em485 support >> serial: 8250_dw: allow enable rs485 at boot time >> serial: 8250: Copy em485 from port to real port. >> serial: 8250: Handle case port doesn't have TEMT interrupt using >> em485. >> serial: 8250_dw: treat rpm suspend with -EBUSY if RS485 ON and >> RTS_AFTER_SEND >> serial: 8250: Copy mctrl when register port. >> serial: 8250: Make em485_rts_after_send() set mctrl according to rts >> state. >> serial: core: Mask mctrl with TIOCM_RTS too if rs485 on and >> RTS_AFTER_SEND set. >> >> drivers/tty/serial/8250/8250.h | 2 +- >> drivers/tty/serial/8250/8250_core.c | 2 ++ >> drivers/tty/serial/8250/8250_dw.c | 41 >> ++++++++++++++++++++++++++++- >> drivers/tty/serial/8250/8250_omap.c | 2 +- >> drivers/tty/serial/8250/8250_port.c | 33 ++++++++++++++++------- >> drivers/tty/serial/serial_core.c | 12 ++++++++- >> include/linux/serial_8250.h | 1 + >> 7 files changed, 79 insertions(+), 14 deletions(-) >> > > -- > Andy Shevchenko <andriy.shevche...@linux.intel.com> > Intel Finland Oy > -- With best regards, Matwey V. Kornilov. Sternberg Astronomical Institute, Lomonosov Moscow State University, Russia 119234, Moscow, Universitetsky pr-k 13, +7 (495) 9392382
