Hi Thierry, On Sat, 26 Jan 2013 16:41:36 +0100, Thierry Bultel <thierry.bul...@wanadoo.fr> wrote: > I am using the "inputattach" utility to work with an elotouch > touchscreen, with serial wire. > > The running kernel is a 3.0.49, the board an iMX6 SOC. The kernel module > source is 'drivers/input/touche/elo.c' > > The issue is that I cannot communicate with the touchscreen without > hacking, either in the kernel, or in inputattach. > > My quick analysis from the kernel side is that I am not sending any > characters in the serial line, because I have tty->hw_stopped = 1, and > therefore uart_start does not call start_tx. > > This is set when the line discipline is configured with CRTSCTS. > > If in 'elo.c' I force the result of the elo_command_10 to be 0, and the > expected packet as well, then I obviously do not send the start packet > but I correctly receive touch event interrupts from the serio layer. > > Or, better, if in inputattach.c, I remove the CRTSCTS flag, then > communication is OK without to hack in the kernel. > > Furthermore, I have taken a look at the old > xserver-xorg-input-elographics-1.1.0/src/xf86Elo.c, that works from ages > with my touchscreen, and I do not see the CRTSCTS in the termios flags. > > I would be please to provide more information if needed.
Thanks for reporting this. Could you tell me exactly which Elotouch model you're using? I take it you're specifying "--elotouch" or "-elo" on the inputtach command line; is that correct? Thanks in advance, Stephen
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