2 comedi/drivers/amplc_pc263.c
3 Driver for Amplicon PC263 and PCI263 relay boards.
5 Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/>
7 COMEDI - Linux Control and Measurement Device Interface
8 Copyright (C) 2000 David A. Schleef <ds@schleef.org>
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 Description: Amplicon PC263, PCI263
28 Author: Ian Abbott <abbotti@mev.co.uk>
29 Devices: [Amplicon] PC263 (pc263), PCI263 (pci263 or amplc_pc263)
30 Updated: Wed, 22 Oct 2008 14:10:53 +0100
33 Configuration options - PC263:
34 [0] - I/O port base address
36 Configuration options - PCI263:
37 [0] - PCI bus of device (optional)
38 [1] - PCI slot of device (optional)
39 If bus/slot is not specified, the first available PCI device will be
42 Each board appears as one subdevice, with 16 digital outputs, each
43 connected to a reed-relay. Relay contacts are closed when output is 1.
44 The state of the outputs can be read.
47 #include "../comedidev.h"
49 #define PC263_DRIVER_NAME "amplc_pc263"
51 /* PCI263 PCI configuration register information */
52 #define PCI_VENDOR_ID_AMPLICON 0x14dc
53 #define PCI_DEVICE_ID_AMPLICON_PCI263 0x000c
54 #define PCI_DEVICE_ID_INVALID 0xffff
56 /* PC263 / PCI263 registers */
57 #define PC263_IO_SIZE 2
60 * Board descriptions for Amplicon PC263 / PCI263.
63 enum pc263_bustype { isa_bustype, pci_bustype };
64 enum pc263_model { pc263_model, pci263_model, anypci_model };
69 enum pc263_bustype bustype;
70 enum pc263_model model;
72 static const struct pc263_board pc263_boards[] = {
73 #if IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_ISA)
76 .bustype = isa_bustype,
80 #if IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_PCI)
83 .devid = PCI_DEVICE_ID_AMPLICON_PCI263,
84 .bustype = pci_bustype,
85 .model = pci263_model,
88 .name = PC263_DRIVER_NAME,
89 .devid = PCI_DEVICE_ID_INVALID,
90 .bustype = pci_bustype,
91 .model = anypci_model, /* wildcard */
97 * This function looks for a board matching the supplied PCI device.
99 static const struct pc263_board *pc263_find_pci_board(struct pci_dev *pci_dev)
103 for (i = 0; i < ARRAY_SIZE(pc263_boards); i++)
104 if (pc263_boards[i].bustype == pci_bustype &&
105 pci_dev->device == pc263_boards[i].devid)
106 return &pc263_boards[i];
112 * This function looks for a PCI device matching the requested board name,
115 static struct pci_dev *pc263_find_pci_dev(struct comedi_device *dev,
116 struct comedi_devconfig *it)
118 const struct pc263_board *thisboard = comedi_board(dev);
119 struct pci_dev *pci_dev = NULL;
120 int bus = it->options[0];
121 int slot = it->options[1];
123 for_each_pci_dev(pci_dev) {
125 if (bus != pci_dev->bus->number ||
126 slot != PCI_SLOT(pci_dev->devfn))
129 if (pci_dev->vendor != PCI_VENDOR_ID_AMPLICON)
132 if (thisboard->model == anypci_model) {
133 /* Wildcard board matches any supported PCI board. */
134 const struct pc263_board *foundboard;
136 foundboard = pc263_find_pci_board(pci_dev);
137 if (foundboard == NULL)
139 /* Replace wildcard board_ptr. */
140 dev->board_ptr = thisboard = foundboard;
142 /* Match specific model name. */
143 if (pci_dev->device != thisboard->devid)
148 dev_err(dev->class_dev,
149 "No supported board found! (req. bus %d, slot %d)\n",
154 * This function checks and requests an I/O region, reporting an error
155 * if there is a conflict.
157 static int pc263_request_region(struct comedi_device *dev, unsigned long from,
158 unsigned long extent)
160 if (!from || !request_region(from, extent, PC263_DRIVER_NAME)) {
161 dev_err(dev->class_dev, "I/O port conflict (%#lx,%lu)!\n",
168 static int pc263_do_insn_bits(struct comedi_device *dev,
169 struct comedi_subdevice *s,
170 struct comedi_insn *insn, unsigned int *data)
172 /* The insn data is a mask in data[0] and the new data
173 * in data[1], each channel cooresponding to a bit. */
175 s->state &= ~data[0];
176 s->state |= data[0] & data[1];
177 /* Write out the new digital output lines */
178 outb(s->state & 0xFF, dev->iobase);
179 outb(s->state >> 8, dev->iobase + 1);
184 static void pc263_report_attach(struct comedi_device *dev)
186 const struct pc263_board *thisboard = comedi_board(dev);
187 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
190 if (IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_ISA) &&
191 thisboard->bustype == isa_bustype)
192 snprintf(tmpbuf, sizeof(tmpbuf), "(base %#lx) ", dev->iobase);
193 else if (IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_PCI) &&
194 thisboard->bustype == pci_bustype)
195 snprintf(tmpbuf, sizeof(tmpbuf), "(pci %s) ",
199 dev_info(dev->class_dev, "%s %sattached\n", dev->board_name, tmpbuf);
202 static int pc263_common_attach(struct comedi_device *dev, unsigned long iobase)
204 const struct pc263_board *thisboard = comedi_board(dev);
205 struct comedi_subdevice *s;
208 dev->board_name = thisboard->name;
209 dev->iobase = iobase;
211 ret = comedi_alloc_subdevices(dev, 1);
215 s = dev->subdevices + 0;
216 /* digital output subdevice */
217 s->type = COMEDI_SUBD_DO;
218 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
221 s->range_table = &range_digital;
222 s->insn_bits = pc263_do_insn_bits;
223 /* read initial relay state */
224 s->state = inb(dev->iobase) | (inb(dev->iobase + 1) << 8);
226 pc263_report_attach(dev);
230 static int pc263_pci_common_attach(struct comedi_device *dev,
231 struct pci_dev *pci_dev)
233 unsigned long iobase;
236 comedi_set_hw_dev(dev, &pci_dev->dev);
238 ret = comedi_pci_enable(pci_dev, PC263_DRIVER_NAME);
240 dev_err(dev->class_dev,
241 "error! cannot enable PCI device and request regions!\n");
244 iobase = pci_resource_start(pci_dev, 2);
245 return pc263_common_attach(dev, iobase);
249 * Attach is called by the Comedi core to configure the driver
250 * for a particular board. If you specified a board_name array
251 * in the driver structure, dev->board_ptr contains that
254 static int pc263_attach(struct comedi_device *dev, struct comedi_devconfig *it)
256 const struct pc263_board *thisboard = comedi_board(dev);
259 dev_info(dev->class_dev, PC263_DRIVER_NAME ": attach\n");
261 /* Process options and reserve resources according to bus type. */
262 if (IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_ISA) &&
263 thisboard->bustype == isa_bustype) {
264 unsigned long iobase = it->options[0];
265 ret = pc263_request_region(dev, iobase, PC263_IO_SIZE);
268 return pc263_common_attach(dev, iobase);
269 } else if (IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_PCI) &&
270 thisboard->bustype == pci_bustype) {
271 struct pci_dev *pci_dev;
273 pci_dev = pc263_find_pci_dev(dev, it);
276 return pc263_pci_common_attach(dev, pci_dev);
278 dev_err(dev->class_dev, PC263_DRIVER_NAME
279 ": BUG! cannot determine board type!\n");
284 * The attach_pci hook (if non-NULL) is called at PCI probe time in preference
285 * to the "manual" attach hook. dev->board_ptr is NULL on entry. There should
286 * be a board entry matching the supplied PCI device.
288 static int __devinit pc263_attach_pci(struct comedi_device *dev,
289 struct pci_dev *pci_dev)
291 if (!IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_PCI))
294 dev_info(dev->class_dev, PC263_DRIVER_NAME ": attach pci %s\n",
296 dev->board_ptr = pc263_find_pci_board(pci_dev);
297 if (dev->board_ptr == NULL) {
298 dev_err(dev->class_dev, "BUG! cannot determine board type!\n");
301 return pc263_pci_common_attach(dev, pci_dev);
304 static void pc263_detach(struct comedi_device *dev)
306 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
310 comedi_pci_disable(pcidev);
314 release_region(dev->iobase, PC263_IO_SIZE);
319 * The struct comedi_driver structure tells the Comedi core module
320 * which functions to call to configure/deconfigure (attach/detach)
321 * the board, and also about the kernel module that contains
324 static struct comedi_driver amplc_pc263_driver = {
325 .driver_name = PC263_DRIVER_NAME,
326 .module = THIS_MODULE,
327 .attach = pc263_attach,
328 .attach_pci = pc263_attach_pci,
329 .detach = pc263_detach,
330 .board_name = &pc263_boards[0].name,
331 .offset = sizeof(struct pc263_board),
332 .num_names = ARRAY_SIZE(pc263_boards),
335 #if IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_PCI)
336 static DEFINE_PCI_DEVICE_TABLE(pc263_pci_table) = {
337 { PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI263) },
340 MODULE_DEVICE_TABLE(pci, pc263_pci_table);
342 static int __devinit amplc_pc263_pci_probe(struct pci_dev *dev,
343 const struct pci_device_id
346 return comedi_pci_auto_config(dev, &lc_pc263_driver);
349 static void __devexit amplc_pc263_pci_remove(struct pci_dev *dev)
351 comedi_pci_auto_unconfig(dev);
354 static struct pci_driver amplc_pc263_pci_driver = {
355 .name = PC263_DRIVER_NAME,
356 .id_table = pc263_pci_table,
357 .probe = &lc_pc263_pci_probe,
358 .remove = __devexit_p(&lc_pc263_pci_remove)
360 module_comedi_pci_driver(amplc_pc263_driver, amplc_pc263_pci_driver);
362 module_comedi_driver(amplc_pc263_driver);
365 MODULE_AUTHOR("Comedi http://www.comedi.org");
366 MODULE_DESCRIPTION("Comedi low-level driver");
367 MODULE_LICENSE("GPL");