I have compiled and loaded, the driver that came with this PCI-E, but after loading the driver, I notice that there was no parport tagged to any of those 3 ports (1 parallel and another with 2 Serials), doing,

dmesg

only the following info about the WCH device driver is displayed,

[ 9.568977] ===================== WCH Device Driver Module Install =====================
[ 9.568979]
[ 9.568980] WCH Info : Loading WCH Multi-I/O Board Driver Module
[ 9.568982] -- Date : 2014/07/02
[ 9.568985] -- Version : 3.0.0.1
[ 9.568986]
[ 9.568987] /home/user/Downloads/LPC_DRV_1P/LINUX/driver/wch_main.c : wch_pci_board_probe
[ 9.569041]
[ 9.569043] WCH Info : Found WCH CH382_2S1P Series Board (2S),
[ 9.569045] bus number:4, device number:0
[ 9.569046]
[ 9.569047] ------------------->pci board probe success
[ 9.569049] /home/user/Downloads/LPC_DRV_1P/LINUX/driver/wch_main.c : wch_get_pci_board_conf
[ 9.569050] ------------------->pci board conf success
[ 9.569052] /home/user/Downloads/LPC_DRV_1P/LINUX/driver/wch_main.c : wch_assign_resource
[ 9.569070] ------------------->pci assign success
[ 9.569071] /home/user/Downloads/LPC_DRV_1P/LINUX/driver/wch_main.c : wch_ser_port_table_init
[ 9.569073] ------------------->ser port table init success
[ 9.569075] /home/user/Downloads/LPC_DRV_1P/LINUX/driver/wch_main.c : wch_register_irq
[ 9.569092] ------------------->pci register irq success
[ 9.569094] /home/user/Downloads/LPC_DRV_1P/LINUX/driver/wch_serial.c : wch_ser_register_driver
[ 9.580905] ------------------->ser register driver success
[ 9.580908] /home/user/Downloads/LPC_DRV_1P/LINUX/driver/wch_serial.c : wch_ser_register_ports
[ 9.580922]
[ 9.580924] ======== board info ========
[ 9.580926] name : CH382_2S1P
[ 9.580928] board_enum : 16
[ 9.580930] board_number : 0
[ 9.580931] irq : 18
[ 9.580933] vector_mask : 0xffffffff
[ 9.580935] bar[0] : 0xd800
[ 9.580937] bar[1] : 0xf6ff8000
[ 9.580939] bar[2] : 0xdc00
[ 9.580940] bar[3] : 0x0
[ 9.580942] bar[4] : 0x0
[ 9.580944] bar[5] : 0x0
[ 9.580945] ----------------------------
[ 9.580947] ============================
[ 9.580949]
[ 9.580950]
[ 9.580951] ======== serial info ========
[ 9.580953] number : 0
[ 9.580955] name : CH382_2S1P
[ 9.580957] iobase : 0xd8c0
[ 9.580958] chip_iobase : 0x0
[ 9.580960] irq : 18
[ 9.580961] vector : 0xd8e9
[ 9.580962] vector_mask : 0xffffffff
[ 9.580964] chip_flag : 0x10
[ 9.580966] port_flag : 0x0
[ 9.580967] ----------------------------
[ 9.580969] number : 1
[ 9.580970] name : CH382_2S1P
[ 9.580972] iobase : 0xd8c8
[ 9.580973] chip_iobase : 0x0
[ 9.580975] irq : 18
[ 9.580976] vector : 0xd8e9
[ 9.580978] vector_mask : 0xffffffff
[ 9.580979] chip_flag : 0x10
[ 9.580981] port_flag : 0x0
[ 9.580983] ----------------------------
[ 9.580986] ============================
[ 9.580988]
[ 9.580989] ================================================================================

and another entrie for,

[ 16.051526] ppdev: user-space parallel port driver

also on /dev, I have from ttyWCH0 to ttyWCH256.

System specs:

**Kernel version:** Linux cnc2-pc 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 GNU/Linux

**Debian version:** 7.11

Do you know how can I discover the parallel port address and how to set it as parport 0?

I have a feeling that this is way over my head, but I'll take stab at a few ideas.

A web search tells me that this CH382 is a PCI card.

What make/model computer is it in. Did you verify that the card is properly seated?

Also, Debian 7 reached end-of-life over a year ago.

Yes, it is properly seated, I can see it through lspci.

I know, this system has being used since a while.

Its a PCI card, with a parallel port in his front: http://sector.ba/dodatne-kartice/236...309085649.html

I found a way to add that module driver in parport through modprobe(https://www.kernel.org/doc/html/late...e/parport.html), but if I add the iobase of Serial Board, in /etc/modprobe.d/alsa-base.conf it doesnt associate, like,

alias parport_lowlevel parport_pc
options parport_pc io=0xd8c0,0xd8c8 irq=18,auto

but, if I remove the "d" from it, it adds and I can see two parports,

[ 16.232672] parport 0x8c0 (WARNING): CTR: wrote 0x0c, read 0xff
[ 16.232676] parport 0x8c0 (WARNING): DATA: wrote 0xaa, read 0xff
[ 16.232678] parport 0x8c0: You gave this address, but there is probably no parallel port there!
[ 16.232689] parport0: PC-style at 0x8c0, irq 18 [PCSPP,TRISTATE]
[ 16.232695] parport0: irq 18 in use, resorting to polled operation
[ 16.326560] parport 0x8c8 (WARNING): CTR: wrote 0x0c, read 0xff
[ 16.326564] parport 0x8c8 (WARNING): DATA: wrote 0xaa, read 0xff
[ 16.326566] parport 0x8c8: You gave this address, but there is probably no parallel port there!
[ 16.326578] parport1: PC-style at 0x8c8, irq 0 [PCSPP,TRISTATE]
[ 16.326594] parport1: irq 0 in use, resorting to polled operation
[ 16.422720] lp0: using parport0 (polling).
[ 16.422751] lp1: using parport1 (polling).

I assume that the address of both io's where not well added, but I am still digging on it, but for now I think that the driver module was not set well, because it meantions 2 serial ports instead of 1 parallel port.

I have retried with the supposed driver CH382_1P but seems like it does a probe and choose the CH382_2S1P =/, but in any case it was supposed to show a parallel port address, and those two are from two serial ports ... I think that there are two connections in the PCB, without any pins, but it has 10 hols instead of 9 to place pins, a Serial Port only uses 9.

So, those drivers that came from the manifacturer was not necessary, and was giving wrong IO address's from want I notice after.

To solve this i have used only modprobe, and restored all the system for a state before I tried to install those drivers.

To start I have listed all the PCIs first, doing,

lspci -v

Then I notice that I had 2 address's for that PCI,

04:00.0 Serial controller: Device 1c00:3250 (rev 10) (prog-if 05 [16850])
Subsystem: Device 1c00:3250
Flags: fast devsel, IRQ 18
I/O ports at d800 [size=256]
Memory at f6ff8000 (32-bit, prefetchable) [size=32K]
I/O ports at dc00 [size=4]
Expansion ROM at f7fe0000 [disabled] [size=32K]
Capabilities: <access denied>

And tried first with IO d800 but no success, and then with dc00 where I was able to use this parallel port.

To add the IO address, I made,

sudo /etc/modprobe.d/alsa-base.conf

and then in the end of this file I add the following lines,

# LPC parport to PCI-E card
alias parport_low level parport_pc
options parport_pc io=0xdc00 irq=18,auto

and made a save and quit, and then,

sudo reboot

after I got the system back again, to confirm made a,

dmesg | grep par

and there was finally my LPC,

[ 15.531022] parport0: PC-style at 0xdc00, irq 18 [PCSPP,TRISTATE]
[ 15.626720] lp0: using parport0 (interrupt-driven).
[ 16.232244] ppdev: user-space parallel port driver

Then I made a test under LinuxCNC and was able to communicate through LP connection using parport0.

I hope that it could help others since I didnt found anything on internet to solve this.