adl_pci6208.c revision 5c67df8b98316fbfede8d4d6bac64d52d4327357 
1/*
2    comedi/drivers/adl_pci6208.c
3
4    Hardware driver for ADLink 6208 series cards:
5	card	     | voltage output    | current output
6	-------------+-------------------+---------------
7	PCI-6208V    |  8 channels       | -
8	PCI-6216V    | 16 channels       | -
9	PCI-6208A    |  8 channels       | 8 channels
10
11    COMEDI - Linux Control and Measurement Device Interface
12    Copyright (C) 2000 David A. Schleef <ds@schleef.org>
13
14    This program is free software; you can redistribute it and/or modify
15    it under the terms of the GNU General Public License as published by
16    the Free Software Foundation; either version 2 of the License, or
17    (at your option) any later version.
18
19    This program is distributed in the hope that it will be useful,
20    but WITHOUT ANY WARRANTY; without even the implied warranty of
21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
22    GNU General Public License for more details.
23
24    You should have received a copy of the GNU General Public License
25    along with this program; if not, write to the Free Software
26    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27*/
28/*
29Driver: adl_pci6208
30Description: ADLink PCI-6208A
31Devices: [ADLink] PCI-6208A (adl_pci6208)
32Author: nsyeow <nsyeow@pd.jaring.my>
33Updated: Fri, 30 Jan 2004 14:44:27 +0800
34Status: untested
35
36Configuration Options:
37  none
38
39References:
40	- ni_660x.c
41	- adl_pci9111.c		copied the entire pci setup section
42	- adl_pci9118.c
43*/
44
45#include "../comedidev.h"
46
47/*
48 * PCI-6208/6216-GL register map
49 */
50#define PCI6208_AO_CONTROL(x)		(0x00 + (2 * (x)))
51#define PCI6208_AO_STATUS		0x00
52#define PCI6208_AO_STATUS_DATA_SEND	(1 << 0)
53#define PCI6208_DIO			0x40
54#define PCI6208_DIO_DO_MASK		(0x0f)
55#define PCI6208_DIO_DO_SHIFT		(0)
56#define PCI6208_DIO_DI_MASK		(0xf0)
57#define PCI6208_DIO_DI_SHIFT		(4)
58
59#define PCI6208_MAX_AO_CHANNELS		8
60
61struct pci6208_board {
62	const char *name;
63	unsigned short dev_id;
64	int ao_chans;
65};
66
67static const struct pci6208_board pci6208_boards[] = {
68	{
69		.name		= "pci6208a",
70		.dev_id		= 0x6208,
71		.ao_chans	= 8,
72	},
73};
74
75struct pci6208_private {
76	struct pci_dev *pci_dev;
77	unsigned int ao_readback[PCI6208_MAX_AO_CHANNELS];
78};
79
80static int pci6208_ao_winsn(struct comedi_device *dev,
81			    struct comedi_subdevice *s,
82			    struct comedi_insn *insn, unsigned int *data)
83{
84	struct pci6208_private *devpriv = dev->private;
85	int i = 0, Data_Read;
86	unsigned short chan = CR_CHAN(insn->chanspec);
87	unsigned long invert = 1 << (16 - 1);
88	unsigned long out_value;
89
90	for (i = 0; i < insn->n; i++) {
91		out_value = data[i] ^ invert;
92		do {
93			Data_Read = (inw(dev->iobase) & 1);
94		} while (Data_Read);
95		outw(out_value, dev->iobase + (0x02 * chan));
96		devpriv->ao_readback[chan] = out_value;
97	}
98
99	return i;
100}
101
102static int pci6208_ao_rinsn(struct comedi_device *dev,
103			    struct comedi_subdevice *s,
104			    struct comedi_insn *insn, unsigned int *data)
105{
106	struct pci6208_private *devpriv = dev->private;
107	int i;
108	int chan = CR_CHAN(insn->chanspec);
109
110	for (i = 0; i < insn->n; i++)
111		data[i] = devpriv->ao_readback[chan];
112
113	return i;
114}
115
116static int pci6208_dio_insn_bits(struct comedi_device *dev,
117				 struct comedi_subdevice *s,
118				 struct comedi_insn *insn,
119				 unsigned int *data)
120{
121	unsigned int mask = data[0] & PCI6208_DIO_DO_MASK;
122	unsigned int bits = data[1];
123
124	if (mask) {
125		s->state &= ~mask;
126		s->state |= bits & mask;
127
128		outw(s->state, dev->iobase + PCI6208_DIO);
129	}
130
131	s->state = inw(dev->iobase + PCI6208_DIO);
132	data[1] = s->state;
133
134	return insn->n;
135}
136
137static int pci6208_dio_insn_config(struct comedi_device *dev,
138				   struct comedi_subdevice *s,
139				   struct comedi_insn *insn,
140				   unsigned int *data)
141{
142	int chan = CR_CHAN(insn->chanspec);
143	unsigned int mask = 1 << chan;
144
145	switch (data[0]) {
146	case INSN_CONFIG_DIO_QUERY:
147		data[1] = (s->io_bits & mask) ? COMEDI_OUTPUT : COMEDI_INPUT;
148		break;
149	default:
150		return -EINVAL;
151	}
152
153	return insn->n;
154}
155
156static struct pci_dev *pci6208_find_device(struct comedi_device *dev,
157					   struct comedi_devconfig *it)
158{
159	const struct pci6208_board *thisboard;
160	struct pci_dev *pci_dev = NULL;
161	int bus = it->options[0];
162	int slot = it->options[1];
163	int i;
164
165	for_each_pci_dev(pci_dev) {
166		if (pci_dev->vendor != PCI_VENDOR_ID_ADLINK)
167			continue;
168		for (i = 0; i < ARRAY_SIZE(pci6208_boards); i++) {
169			thisboard = &pci6208_boards[i];
170			if (thisboard->dev_id != pci_dev->device)
171				continue;
172			/* was a particular bus/slot requested? */
173			if (bus || slot) {
174				/* are we on the wrong bus/slot? */
175				if (pci_dev->bus->number != bus ||
176				    PCI_SLOT(pci_dev->devfn) != slot)
177					continue;
178			}
179			dev_dbg(dev->class_dev,
180				"Found %s on bus %d, slot, %d, irq=%d\n",
181				thisboard->name,
182				pci_dev->bus->number,
183				PCI_SLOT(pci_dev->devfn),
184				pci_dev->irq);
185			dev->board_ptr = thisboard;
186			return pci_dev;
187		}
188	}
189	dev_err(dev->class_dev,
190		"No supported board found! (req. bus %d, slot %d)\n",
191		bus, slot);
192	return NULL;
193}
194
195static int pci6208_attach(struct comedi_device *dev,
196			  struct comedi_devconfig *it)
197{
198	const struct pci6208_board *thisboard;
199	struct pci6208_private *devpriv;
200	struct comedi_subdevice *s;
201	int ret;
202
203	ret = alloc_private(dev, sizeof(*devpriv));
204	if (ret < 0)
205		return ret;
206	devpriv = dev->private;
207
208	devpriv->pci_dev = pci6208_find_device(dev, it);
209	if (!devpriv->pci_dev)
210		return -EIO;
211	thisboard = comedi_board(dev);
212
213	ret = comedi_pci_enable(devpriv->pci_dev, "adl_pci6208");
214	if (ret) {
215		dev_err(dev->class_dev,
216			"Failed to enable PCI device and request regions\n");
217		return ret;
218	}
219
220	dev->iobase = pci_resource_start(devpriv->pci_dev, 2);
221
222	dev->board_name = thisboard->name;
223
224	ret = comedi_alloc_subdevices(dev, 2);
225	if (ret)
226		return ret;
227
228	s = dev->subdevices + 0;
229	/* analog output subdevice */
230	s->type		= COMEDI_SUBD_AO;
231	s->subdev_flags	= SDF_WRITABLE;
232	s->n_chan	= thisboard->ao_chans;
233	s->maxdata	= 0xffff;
234	s->range_table	= &range_bipolar10;
235	s->insn_write	= pci6208_ao_winsn;
236	s->insn_read	= pci6208_ao_rinsn;
237
238	s = dev->subdevices + 1;
239	/* digital i/o subdevice */
240	s->type		= COMEDI_SUBD_DIO;
241	s->subdev_flags	= SDF_READABLE | SDF_WRITABLE;
242	s->n_chan	= 8;
243	s->maxdata	= 1;
244	s->range_table	= &range_digital;
245	s->insn_bits	= pci6208_dio_insn_bits;
246	s->insn_config	= pci6208_dio_insn_config;
247
248	s->io_bits	= 0x0f;
249	s->state	= inw(dev->iobase + PCI6208_DIO);
250
251	dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx\n",
252		dev->driver->driver_name, dev->board_name, dev->iobase);
253
254	return 0;
255}
256
257static void pci6208_detach(struct comedi_device *dev)
258{
259	struct pci6208_private *devpriv = dev->private;
260
261	if (devpriv && devpriv->pci_dev) {
262		if (dev->iobase)
263			comedi_pci_disable(devpriv->pci_dev);
264		pci_dev_put(devpriv->pci_dev);
265	}
266}
267
268static struct comedi_driver adl_pci6208_driver = {
269	.driver_name	= "adl_pci6208",
270	.module		= THIS_MODULE,
271	.attach		= pci6208_attach,
272	.detach		= pci6208_detach,
273};
274
275static int __devinit adl_pci6208_pci_probe(struct pci_dev *dev,
276					   const struct pci_device_id *ent)
277{
278	return comedi_pci_auto_config(dev, &adl_pci6208_driver);
279}
280
281static void __devexit adl_pci6208_pci_remove(struct pci_dev *dev)
282{
283	comedi_pci_auto_unconfig(dev);
284}
285
286static DEFINE_PCI_DEVICE_TABLE(adl_pci6208_pci_table) = {
287	{ PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x6208) },
288	{ 0 }
289};
290MODULE_DEVICE_TABLE(pci, adl_pci6208_pci_table);
291
292static struct pci_driver adl_pci6208_pci_driver = {
293	.name		= "adl_pci6208",
294	.id_table	= adl_pci6208_pci_table,
295	.probe		= adl_pci6208_pci_probe,
296	.remove		= __devexit_p(adl_pci6208_pci_remove),
297};
298module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver);
299
300MODULE_AUTHOR("Comedi http://www.comedi.org");
301MODULE_DESCRIPTION("Comedi low-level driver");
302MODULE_LICENSE("GPL");
303