16a5c8664766b82b36ec50bd2de9e72d3eae0dfbbIan Abbott/* 28485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * comedi/drivers/amplc_pc236.c 34cb60db2eabd275649b3305cc488a9794de8e463Ian Abbott * Driver for Amplicon PC36AT DIO boards. 48485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * 58485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/> 68485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * 78485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * COMEDI - Linux Control and Measurement Device Interface 88485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * Copyright (C) 2000 David A. Schleef <ds@schleef.org> 98485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * 108485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * This program is free software; you can redistribute it and/or modify 118485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * it under the terms of the GNU General Public License as published by 128485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * the Free Software Foundation; either version 2 of the License, or 138485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * (at your option) any later version. 148485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * 158485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * This program is distributed in the hope that it will be useful, 168485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * but WITHOUT ANY WARRANTY; without even the implied warranty of 178485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 188485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * GNU General Public License for more details. 198485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott */ 206a5c8664766b82b36ec50bd2de9e72d3eae0dfbbIan Abbott/* 218485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * Driver: amplc_pc236 224cb60db2eabd275649b3305cc488a9794de8e463Ian Abbott * Description: Amplicon PC36AT 238485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * Author: Ian Abbott <abbotti@mev.co.uk> 244cb60db2eabd275649b3305cc488a9794de8e463Ian Abbott * Devices: [Amplicon] PC36AT (pc36at) 254cb60db2eabd275649b3305cc488a9794de8e463Ian Abbott * Updated: Fri, 25 Jul 2014 15:32:40 +0000 268485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * Status: works 278485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * 288485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * Configuration options - PC36AT: 298485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * [0] - I/O port base address 308485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * [1] - IRQ (optional) 318485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * 324cb60db2eabd275649b3305cc488a9794de8e463Ian Abbott * The PC36AT board has a single 8255 appearing as subdevice 0. 338485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * 348485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * Subdevice 1 pretends to be a digital input device, but it always returns 358485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * 0 when read. However, if you run a command with scan_begin_src=TRIG_EXT, 368485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * a rising edge on port C bit 3 acts as an external trigger, which can be 378485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * used to wake up tasks. This is like the comedi_parport device, but the 388485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * only way to physically disable the interrupt on the PC36AT is to remove 398485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * the IRQ jumper. If no interrupt is connected, then subdevice 1 is 408485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott * unused. 418485e4f04a5dcb4d51b46f65e984ce3b22599967Ian Abbott */ 426a5c8664766b82b36ec50bd2de9e72d3eae0dfbbIan Abbott 43ce157f8032bbd46d9427034c335b0afd751da25dH Hartley Sweeten#include <linux/module.h> 4470265d24e3404fe798b6edd55a02016b1edb49d7Jiri Slaby 456a5c8664766b82b36ec50bd2de9e72d3eae0dfbbIan Abbott#include "../comedidev.h" 466a5c8664766b82b36ec50bd2de9e72d3eae0dfbbIan Abbott 474cb60db2eabd275649b3305cc488a9794de8e463Ian Abbott#include "amplc_pc236.h" 487bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbott 4918e41de083075b3b6a0bd55e00f1662d045efb49Ian Abbottstatic int pc236_attach(struct comedi_device *dev, struct comedi_devconfig *it) 5018e41de083075b3b6a0bd55e00f1662d045efb49Ian Abbott{ 519a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten struct pc236_private *devpriv; 5218e41de083075b3b6a0bd55e00f1662d045efb49Ian Abbott int ret; 5318e41de083075b3b6a0bd55e00f1662d045efb49Ian Abbott 540bdab509bf9c6d838dc0a3b1d68bbf841fc20b5aH Hartley Sweeten devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); 55c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten if (!devpriv) 56c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten return -ENOMEM; 579a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten 58ffe2d9fd49af6461972201eeaa8012e71fe40c97Ian Abbott ret = comedi_request_region(dev, it->options[0], 0x4); 59ffe2d9fd49af6461972201eeaa8012e71fe40c97Ian Abbott if (ret) 60ffe2d9fd49af6461972201eeaa8012e71fe40c97Ian Abbott return ret; 61c3ba2678d01e983ab47b970bc80ea8e5b3444c54H Hartley Sweeten 624cb60db2eabd275649b3305cc488a9794de8e463Ian Abbott return amplc_pc236_common_attach(dev, dev->iobase, it->options[1], 0); 637bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbott} 647bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbott 654cb60db2eabd275649b3305cc488a9794de8e463Ian Abbottstatic const struct pc236_board pc236_boards[] = { 666f929b4e5a022c3ca806c1675ccb833c42086853Ian Abbott { 676f929b4e5a022c3ca806c1675ccb833c42086853Ian Abbott .name = "pc36at", 686f929b4e5a022c3ca806c1675ccb833c42086853Ian Abbott }, 696f929b4e5a022c3ca806c1675ccb833c42086853Ian Abbott}; 706f929b4e5a022c3ca806c1675ccb833c42086853Ian Abbott 717bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbottstatic struct comedi_driver amplc_pc236_driver = { 723d03cfcaf6cde186f439ca1a318423007570760aH Hartley Sweeten .driver_name = "amplc_pc236", 737bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbott .module = THIS_MODULE, 747bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbott .attach = pc236_attach, 754cb60db2eabd275649b3305cc488a9794de8e463Ian Abbott .detach = comedi_legacy_detach, 764cb60db2eabd275649b3305cc488a9794de8e463Ian Abbott .board_name = &pc236_boards[0].name, 777bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbott .offset = sizeof(struct pc236_board), 784cb60db2eabd275649b3305cc488a9794de8e463Ian Abbott .num_names = ARRAY_SIZE(pc236_boards), 797bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbott}; 807bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbott 817bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbottmodule_comedi_driver(amplc_pc236_driver); 827bd06f69f3f52fcd04999790a2a9d66f1a8cd0c9Ian Abbott 8390f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_AUTHOR("Comedi http://www.comedi.org"); 844cb60db2eabd275649b3305cc488a9794de8e463Ian AbbottMODULE_DESCRIPTION("Comedi driver for Amplicon PC36AT DIO boards"); 8590f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_LICENSE("GPL"); 86