adl_pci6208.c revision 818f569fe930c5b8a05d1a44ece3c63c99c13c88 
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-6208/6216 Series Multi-channel Analog Output Cards
31Devices: (ADLink) PCI-6208 [adl_pci6208]
32	 (ADLink) PCI-6216 [adl_pci6216]
33Author: nsyeow <nsyeow@pd.jaring.my>
34Updated: Fri, 30 Jan 2004 14:44:27 +0800
35Status: untested
36
37Configuration Options: not applicable, uses PCI auto config
38
39References:
40	- ni_660x.c
41	- adl_pci9111.c		copied the entire pci setup section
42	- adl_pci9118.c
43*/
44
45#include <linux/pci.h>
46
47#include "../comedidev.h"
48
49/*
50 * PCI-6208/6216-GL register map
51 */
52#define PCI6208_AO_CONTROL(x)		(0x00 + (2 * (x)))
53#define PCI6208_AO_STATUS		0x00
54#define PCI6208_AO_STATUS_DATA_SEND	(1 << 0)
55#define PCI6208_DIO			0x40
56#define PCI6208_DIO_DO_MASK		(0x0f)
57#define PCI6208_DIO_DO_SHIFT		(0)
58#define PCI6208_DIO_DI_MASK		(0xf0)
59#define PCI6208_DIO_DI_SHIFT		(4)
60
61#define PCI6208_MAX_AO_CHANNELS		16
62
63enum pci6208_boardid {
64	BOARD_PCI6208,
65	BOARD_PCI6216,
66};
67
68struct pci6208_board {
69	const char *name;
70	int ao_chans;
71};
72
73static const struct pci6208_board pci6208_boards[] = {
74	[BOARD_PCI6208] = {
75		.name		= "adl_pci6208",
76		.ao_chans	= 8,
77	},
78	[BOARD_PCI6216] = {
79		.name		= "adl_pci6216",
80		.ao_chans	= 16,
81	},
82};
83
84struct pci6208_private {
85	unsigned int ao_readback[PCI6208_MAX_AO_CHANNELS];
86};
87
88static int pci6208_ao_winsn(struct comedi_device *dev,
89			    struct comedi_subdevice *s,
90			    struct comedi_insn *insn, unsigned int *data)
91{
92	struct pci6208_private *devpriv = dev->private;
93	int chan = CR_CHAN(insn->chanspec);
94	unsigned long invert = 1 << (16 - 1);
95	unsigned long value = 0;
96	unsigned short status;
97	int i;
98
99	for (i = 0; i < insn->n; i++) {
100		value = data[i] ^ invert;
101
102		do {
103			status = inw(dev->iobase + PCI6208_AO_STATUS);
104		} while (status & PCI6208_AO_STATUS_DATA_SEND);
105
106		outw(value, dev->iobase + PCI6208_AO_CONTROL(chan));
107	}
108	devpriv->ao_readback[chan] = value;
109
110	return insn->n;
111}
112
113static int pci6208_ao_rinsn(struct comedi_device *dev,
114			    struct comedi_subdevice *s,
115			    struct comedi_insn *insn, unsigned int *data)
116{
117	struct pci6208_private *devpriv = dev->private;
118	int chan = CR_CHAN(insn->chanspec);
119	int i;
120
121	for (i = 0; i < insn->n; i++)
122		data[i] = devpriv->ao_readback[chan];
123
124	return insn->n;
125}
126
127static int pci6208_di_insn_bits(struct comedi_device *dev,
128				struct comedi_subdevice *s,
129				struct comedi_insn *insn,
130				unsigned int *data)
131{
132	unsigned int val;
133
134	val = inw(dev->iobase + PCI6208_DIO);
135	val = (val & PCI6208_DIO_DI_MASK) >> PCI6208_DIO_DI_SHIFT;
136
137	data[1] = val;
138
139	return insn->n;
140}
141
142static int pci6208_do_insn_bits(struct comedi_device *dev,
143				struct comedi_subdevice *s,
144				struct comedi_insn *insn,
145				unsigned int *data)
146{
147	unsigned int mask = data[0];
148	unsigned int bits = data[1];
149
150	if (mask) {
151		s->state &= ~mask;
152		s->state |= (bits & mask);
153
154		outw(s->state, dev->iobase + PCI6208_DIO);
155	}
156
157	data[1] = s->state;
158
159	return insn->n;
160}
161
162static int pci6208_auto_attach(struct comedi_device *dev,
163			       unsigned long context)
164{
165	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
166	const struct pci6208_board *boardinfo = NULL;
167	struct pci6208_private *devpriv;
168	struct comedi_subdevice *s;
169	unsigned int val;
170	int ret;
171
172	if (context < ARRAY_SIZE(pci6208_boards))
173		boardinfo = &pci6208_boards[context];
174	if (!boardinfo)
175		return -ENODEV;
176	dev->board_ptr = boardinfo;
177	dev->board_name = boardinfo->name;
178
179	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
180	if (!devpriv)
181		return -ENOMEM;
182	dev->private = devpriv;
183
184	ret = comedi_pci_enable(dev);
185	if (ret)
186		return ret;
187	dev->iobase = pci_resource_start(pcidev, 2);
188
189	ret = comedi_alloc_subdevices(dev, 3);
190	if (ret)
191		return ret;
192
193	s = &dev->subdevices[0];
194	/* analog output subdevice */
195	s->type		= COMEDI_SUBD_AO;
196	s->subdev_flags	= SDF_WRITABLE;
197	s->n_chan	= boardinfo->ao_chans;
198	s->maxdata	= 0xffff;
199	s->range_table	= &range_bipolar10;
200	s->insn_write	= pci6208_ao_winsn;
201	s->insn_read	= pci6208_ao_rinsn;
202
203	s = &dev->subdevices[1];
204	/* digital input subdevice */
205	s->type		= COMEDI_SUBD_DI;
206	s->subdev_flags	= SDF_READABLE;
207	s->n_chan	= 4;
208	s->maxdata	= 1;
209	s->range_table	= &range_digital;
210	s->insn_bits	= pci6208_di_insn_bits;
211
212	s = &dev->subdevices[2];
213	/* digital output subdevice */
214	s->type		= COMEDI_SUBD_DO;
215	s->subdev_flags	= SDF_WRITABLE;
216	s->n_chan	= 4;
217	s->maxdata	= 1;
218	s->range_table	= &range_digital;
219	s->insn_bits	= pci6208_do_insn_bits;
220
221	/*
222	 * Get the read back signals from the digital outputs
223	 * and save it as the initial state for the subdevice.
224	 */
225	val = inw(dev->iobase + PCI6208_DIO);
226	val = (val & PCI6208_DIO_DO_MASK) >> PCI6208_DIO_DO_SHIFT;
227	s->state	= val;
228	s->io_bits	= 0x0f;
229
230	dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx\n",
231		dev->driver->driver_name, dev->board_name, dev->iobase);
232
233	return 0;
234}
235
236static struct comedi_driver adl_pci6208_driver = {
237	.driver_name	= "adl_pci6208",
238	.module		= THIS_MODULE,
239	.auto_attach	= pci6208_auto_attach,
240	.detach		= comedi_pci_disable,
241};
242
243static int adl_pci6208_pci_probe(struct pci_dev *dev,
244				 const struct pci_device_id *id)
245{
246	return comedi_pci_auto_config(dev, &adl_pci6208_driver,
247				      id->driver_data);
248}
249
250static DEFINE_PCI_DEVICE_TABLE(adl_pci6208_pci_table) = {
251	{ PCI_VDEVICE(ADLINK, 0x6208), BOARD_PCI6208 },
252	{ PCI_VDEVICE(ADLINK, 0x6216), BOARD_PCI6216 },
253	{ 0 }
254};
255MODULE_DEVICE_TABLE(pci, adl_pci6208_pci_table);
256
257static struct pci_driver adl_pci6208_pci_driver = {
258	.name		= "adl_pci6208",
259	.id_table	= adl_pci6208_pci_table,
260	.probe		= adl_pci6208_pci_probe,
261	.remove		= comedi_pci_auto_unconfig,
262};
263module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver);
264
265MODULE_AUTHOR("Comedi http://www.comedi.org");
266MODULE_DESCRIPTION("Comedi low-level driver");
267MODULE_LICENSE("GPL");
268