This is a port of the Advantech driver to modern (>=3.19) kernels.   As such,
it should be noted that this driver comes with absolutely no warranty.

Furthermore, I have given no consideration to support for older kernels, nor
has this been thoroughly tested.  If it builds, consider yourself lucky.

I'll be adding further notes here as I get more things working.  Long term,
I'd like to see this code cleaned up and merged into the standard `8250`
serial driver from which it forked (a long time ago by the looks of things).

Building procedures, get your kernel sources prepared (`make menuconfig`,
followed by perhaps `make bzImage modules` or maybe `make modules_prepare`),
then in the kernel source tree, run:

```
$ make modules M=/path/to/adv950/driver
```

With luck, you should find a `adv950.ko` file in `/path/to/adv950/driver`.

Create the directory `/lib/modules/$( uname -r )/extra` and plop that `.ko`
file in it, then run `depmod -a`.  Fingers crossed, you should be able to
`modprobe` the driver and it should work.  I find the `udev` subsystem
autodetects the serial device and attempts to load the driver at boot.

The devices appear as `/dev/ttyAPx` device nodes, and `dmesg` looks like this:

```
Mar  5 06:31:58 vk4msl-router kernel: adv950: loading out-of-tree module taints kernel.
Mar  5 06:31:58 vk4msl-router kernel:
Mar  5 06:31:58 vk4msl-router kernel: ===============================================================
Mar  5 06:31:58 vk4msl-router kernel: Advantech PCI-954/952/16C950 Device Drivers. V3.33 [11/07/2011]
Mar  5 06:31:58 vk4msl-router kernel: Supports: RS232/422/485 auto detection and setting
Mar  5 06:31:58 vk4msl-router kernel: Devices:  UNO:  UNO2050 [COM3/COM4]
Mar  5 06:31:58 vk4msl-router kernel:                 UNO2059 [COM1~COM4]
Mar  5 06:31:58 vk4msl-router kernel:                 UNOB-2201CB [COM1~COM8]
Mar  5 06:31:58 vk4msl-router kernel:                 UNOB-2176 [COM1~COM4]
Mar  5 06:31:58 vk4msl-router kernel:                 UNO-1150 [COM2/COM3]
Mar  5 06:31:58 vk4msl-router kernel:                 UNO-2679 [COM3~COM6]
Mar  5 06:31:58 vk4msl-router kernel:                 UNO-4672 [COM3~COM10]
Mar  5 06:31:58 vk4msl-router kernel:           ICOM: PCI-1601, PCI-1602\x0a                PCI-1603, PCI-1604\x0a         
       PCI-1610, PCI-1612\x0a                PCI-1620, PCI-1622
Mar  5 06:31:58 vk4msl-router kernel:           MIC:  MIC-3611, MIC-3612
Mar  5 06:31:58 vk4msl-router kernel:                 MIC-3620, MIC-3621
Mar  5 06:31:58 vk4msl-router kernel:           PCM:  PCM-3614P/I, PCM-3641P/I
Mar  5 06:31:58 vk4msl-router kernel:                 PCM-3618P/I, PCM-3681P/I
Mar  5 06:31:58 vk4msl-router kernel:       General:  A001, A002, A004
Mar  5 06:31:58 vk4msl-router kernel:                 A101, A102, A104
Mar  5 06:31:58 vk4msl-router kernel:                 F001, F002, F004
Mar  5 06:31:58 vk4msl-router kernel:                 F101, F102, F104
Mar  5 06:31:58 vk4msl-router kernel:                 A202, A304, A408
Mar  5 06:31:58 vk4msl-router kernel: Advantech Industrial Automation Group.
Mar  5 06:31:58 vk4msl-router kernel: ===============================================================
Mar  5 06:31:58 vk4msl-router kernel: Serial: 8250/16550 driver, Max support 64 ports, IRQ sharing enabled
Mar  5 06:31:58 vk4msl-router kernel: Advantech General COM Port Device
Mar  5 06:31:58 vk4msl-router kernel: , function 0, port 0, RS232
Mar  5 06:31:58 vk4msl-router kernel:
Mar  5 06:31:58 vk4msl-router kernel: ttyAP0 at I/O 0xef00 (irq = 7) is a 16C950/954
Mar  5 06:31:58 vk4msl-router kernel: Advantech General COM Port Device
Mar  5 06:31:58 vk4msl-router kernel: , function 0, port 1, RS232
Mar  5 06:31:58 vk4msl-router kernel:
Mar  5 06:31:58 vk4msl-router kernel: ttyAP1 at I/O 0xee00 (irq = 7) is a 16C950/954
```

Status as of 2017-03-05: The driver loads, device nodes appear, but not much else.

 -- Stuart Longland <[email protected]>

The original README is below.

-----------------------------------------------------------------------------

=============================================================================
	   ADVANTECH industrial comunication cards device driver
			 Installation Guide
		    for Linux Kernel 2.4.x,2.6.x,3.x
	   Copyright (C) 2011, Advantech eAutomation Division.
=============================================================================

This README file describes the HOW-TOs of driver installation.

1. Change Logs

Version 3.00 <2004-11-29> 
	- Moved code from 2.4.x
Version 3.01 <2004-12-02> 
	- Fixed UNO-2050 function 1 offset typing error
Version 3.02 <2004-12-03> 
	- Support FC3
Version 3.03 <2004-12-15> 
	- Support UART types can be specified by each port to support
	  some kind of devices did not fully implement with auto detection
Version 3.04 <2004-12-30> 
	- Support serial port ioctl TIOCGSERIAL to get serial port jumper
	  setting and store at reserved_char[0]. If value is zero, that
	  means jumper switch to RS232. Otherwise, it would be RS422/485.

          struct serial_struct serinfo;
          // get serial port information
          serinfo.reserved_char[0] = 0;
          if (ioctl(fd, TIOCGSERIAL, &serinfo) < 0) {
              perror("Cannot get serial info");
              close(fd);
              return;
          }

          // get serial port type configuration
          if (serinfo.reserved_char[0] == 0)
          {
              // RS232
          }
          else
          {
              // RS422/485
          }
Version 3.05 <2005-2-17> 
        - Porting serial driver to 2.4 kernel
        - Enhance 2.4 and 2.6 serial drivers, Makefile and script file
Version 3.06 <2005-4-25>
	- Remove the folder of 'pclterm' from the package
	- Test in SuSE 9.2, Mandrake 10.1 and Debian 3.0r2
Version 3.07 <2005-5-31>
	- Add ICOM cards support
	  PCI-1601A/B/AU/BU, PCI-1602A/B/AU/BU/UP,
	  PCI-1603, PCI-1604UP and PCI-1622CU
Version 3.08 <2005-6-14>
	- Correct PCI-952 2nd port start base address(BAR1)
Version 3.09 <2005-6-22>
	- Fix 2.4 driver which did not set auto DTR correctly
Version 3.10 <2005-6-24>
	- Add code to setup auto DTR after detection
Version 3.11 <2005-6-29>
	- Fix PCI-1622 ports on function 1 detection problem
Version 3.12 <2005-7-22>
	- Add support for UNOB-2201CB carrier board
	- Add MIC-3612 and MIC-3620 to 2.6 pci_serial_quirks table
	- Change the value of UART_NR to 64 in the driver for 2.6 kernel
Version 3.13 <2005-8-9>
	- Fix UNOB-2201CB ports on function 1 detection problem
Version 3.14 <2005-11-07>
	- Add support for MIC-3611
Version 3.15 <2006-2-16>
	- Add support for Mandriva Linux 2006	
Version 3.16 <2006-2-16>
	- Change the SERIAL_NAME to support devfs.
Version 3.17 <2006-5-24>
	- Add support for Debian 3.1r0a (kernel version 2.6.8-2-686) 
Version 3.18 <2006-6-8>
	- Add support for SuSE LINUX 10.1 and Fedora Core 5 
Verson  3.19 <2006-11-10>
	-Add support for UNO-2176
Version 3.20 <2007-03-06>
	- Fix bug in low active type for 485 mode(kernel 2.6)
	- Support Ubuntu 6.06(add UBUNTU_2_6_15) and RedHat Enterprise Server 4(kernel 2.6)
	- Support quick response(use setserial to change uart type)
	- Enable 16C950 trigger level and hardware and software flow control
Version 3.21 <2007-05-21>
	- Add support for PCM-3614P PCM-3618P PCM-3681P PCM-3641P
Version 3.22 <2007-09-14>
	- Support FC6
Version 3.23 <2007-09-30>
	- Fix the bug in serial8250_get_mctrl
Version 3.24 <2007-12-06>
	- Fix software flow control in 2.4 kernel version for MIC-3612
Version 3.25 <2007-12-06>
	- Fix bug about flow control in 2.6 kernel
	- Fix bug about change_speed in 2.4 kernel
Version 3.26 <2008-07-07>
	- to support FC7 and FC8
	- to support UNO-1150
	- to support MIC-3621
	- to support ubuntu 8.04 
Version 3.27 <2008-10-08>
	- Source headers comply with GPL
	- modify the driver readme
Version 3.28 <2008-12-08>
      - to support UNO-2679, UNO-4672
Version 3.29 <2009-06-03>
      - to support debian 5.0
      - to support patch CONFIG_PREEMPT_RT in kernel
      - to support A001 A002 A004 A101 A102 A104 devices
      - to support F001 F002 F004 F101 F102 F104 deivces
Version 3.30 <2010-05-06>
      - to support FC10,FC11,FC12,SUSE 11.2 Madriva 2010
      - to support Advantech General COM port	 
Version 3.31 <2010-08-11>
      - updata to support kernel-2.6.32 and kernel-2.6.33
      - to support ubuntu 10.04 and Fedora core 13
Version 3.32 <2010-08-11>
      - updata to support redhat 7.2
      - fix bug for general COM port information
      - add support Fedora 14
      - fix bug about stty
Version 3.33 <2010-11-07>
      - support 2.6.37,2.6.38,2.6.39 and 3.x kernel
      - support PCIe-1620
    

2. Test environment

   +--------------------------+-------------------------+
   |  Distribution            | kernel version          | 
   +--------------------------+-------------------------+
   |	Red Hat 7.2           |  2.4.7-10               |  
   |	Red Hat 9             |  2.4.20-8               |  
   |	RedHat Enterprise 4   |  2.6.9-34.EL            |
   |	Redhat Enterprise 5.4 |  2.6.18-164.el5         |
   |	Fedora Core 6         |  2.6.18-1.2798.fc6      | 
   |	Fedora Core 8         |  2.6.23.1-42.fc8        |
   |	Fedora Core 9         |  2.6.25-14.fc9          |       
   |	Fedora Core 10        |  2.6.27.5-117.fc10      |
   |	Fedora Core 11        |  2.6.29.4-167.fc11      |    
   |	Fedora Core 12        |  2.6.31.5-127.fc12      | 
   |    Fedora Core 13        |  2.6.33.3-85.fc13       | 
   |	Fedora Core 14        |  2.6.35.6-45.fc14       |  
   |    Fedora Core 15        |  2.6.38/2.6.40          |         
   |	SUSE 10.1             |  2.6.16.13-4-default    |       
   |	SUSE 10.3             |  2.6.22.5-31-default    |      
   |	SUSE 11.2             |  2.6.31.5-0.1-desktop   |
   |    SUSE 11.4             |  2.6.37                 |
   |	Mandriva 2010         |  2.6.31.5-desktop-1mnb  |
   |	Debian 5.0.4          |  2.6.26-2-686           |
   |    Debian 6.0.2          |  2.6.32                 |    
   |	Ubuntu 8.04           |  2.6.24-19-generic      | 
   |	ubuntu 9.04           |  2.6.28-11-generic      |
   |	Ubuntu 9.10           |  2.6.31-14-generic      |
   |	Ubuntu 10.04          |  2.6.32-21-generic      |
   |    Ubuntu 11.10          |  3.0.2                  |
   +--------------------------+-------------------------+

3. Installation

3.1. Login as 'root' before executing the following instructions.

3.2. Uncompress the driver
   # tar zxvf adv950_vM_NN.tar.gz

3.3. Build the driver
   a. Build driver for 2.4 kernel
      # cd adv950_vM_NN/2.4
      # make
   b. Build driver for 2.6 kernel
      # cd adv950_vM_NN/2.6
      # make
   Note: 
      To compile the source code, you must install kernel development header file package,"gcc" and "make" command.
      In 2.4 kernel version, you should use "ln" command to make a link named "linux-2.4" in /usr/src/, it link to you kernel development header installed folder.

	
3.4. Install the driver module
   # make install
   to see whether ttyAP0~ttyAP7 exist in /dev/ folder, 
   if not,please execute the following command, 
   # make node

3.5. Test driver and get serial port type configuration
   # make test

3.6. If you want the Linux bring up module at each boot,
   please follow the steps showing below
   a. Build driver 
   b. For 2.4 kernel, add "insmod /YOURLOCATION/adv950_vM_NN/2.4/adv950.o" to
      to boot up shell script.
   c. For 2.6 kernel, add "insmod /YOURLOCATION/adv950_vM_NN/2.6/adv950.ko" to
      to boot up shell script.  
   Fedora core 6 for example:
   add "insmod /YOURLOCATION/adv950_vM_NN/2.6/adv950.ko" to /etc/rc.d/rc.local

3.7. Uninstall the driver module and clean
   # make uninstall
   # make clean