2 comedi/drivers/ni_670x.c
3 Hardware driver for NI 670x devices
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
20 Description: National Instruments 670x
21 Author: Bart Joris <bjoris@advalvas.be>
22 Updated: Wed, 11 Dec 2002 18:25:35 -0800
23 Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
26 Commands are not supported.
30 Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001
34 322110a.pdf PCI/PXI-6704 User Manual
35 322110b.pdf PCI/PXI-6703/6704 User Manual
39 #include <linux/module.h>
40 #include <linux/interrupt.h>
41 #include <linux/slab.h>
43 #include "../comedi_pci.h"
45 #define AO_VALUE_OFFSET 0x00
46 #define AO_CHAN_OFFSET 0x0c
47 #define AO_STATUS_OFFSET 0x10
48 #define AO_CONTROL_OFFSET 0x10
49 #define DIO_PORT0_DIR_OFFSET 0x20
50 #define DIO_PORT0_DATA_OFFSET 0x24
51 #define DIO_PORT1_DIR_OFFSET 0x28
52 #define DIO_PORT1_DATA_OFFSET 0x2c
53 #define MISC_STATUS_OFFSET 0x14
54 #define MISC_CONTROL_OFFSET 0x14
56 enum ni_670x_boardid {
62 struct ni_670x_board {
64 unsigned short ao_chans;
67 static const struct ni_670x_board ni_670x_boards[] = {
82 struct ni_670x_private {
87 static int ni_670x_ao_insn_write(struct comedi_device *dev,
88 struct comedi_subdevice *s,
89 struct comedi_insn *insn,
92 unsigned int chan = CR_CHAN(insn->chanspec);
93 unsigned int val = s->readback[chan];
97 * Channel number mapping:
99 * NI 6703/ NI 6704 | NI 6704 Only
100 * -------------------------------
101 * vch(0) : 0 | ich(16) : 1
102 * vch(1) : 2 | ich(17) : 3
104 * vch(15) : 30 | ich(31) : 31
106 for (i = 0; i < insn->n; i++) {
108 /* First write in channel register which channel to use */
109 writel(((chan & 15) << 1) | ((chan & 16) >> 4),
110 dev->mmio + AO_CHAN_OFFSET);
111 /* write channel value */
112 writel(val, dev->mmio + AO_VALUE_OFFSET);
114 s->readback[chan] = val;
119 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
120 struct comedi_subdevice *s,
121 struct comedi_insn *insn,
124 if (comedi_dio_update_state(s, data))
125 writel(s->state, dev->mmio + DIO_PORT0_DATA_OFFSET);
127 data[1] = readl(dev->mmio + DIO_PORT0_DATA_OFFSET);
132 static int ni_670x_dio_insn_config(struct comedi_device *dev,
133 struct comedi_subdevice *s,
134 struct comedi_insn *insn,
139 ret = comedi_dio_insn_config(dev, s, insn, data, 0);
143 writel(s->io_bits, dev->mmio + DIO_PORT0_DIR_OFFSET);
148 /* ripped from mite.h and mite_setup2() to avoid mite dependency */
149 #define MITE_IODWBSR 0xc0 /* IO Device Window Base Size Register */
150 #define WENAB (1 << 7) /* window enable */
152 static int ni_670x_mite_init(struct pci_dev *pcidev)
154 void __iomem *mite_base;
157 /* ioremap the MITE registers (BAR 0) temporarily */
158 mite_base = pci_ioremap_bar(pcidev, 0);
162 /* set data window to main registers (BAR 1) */
163 main_phys_addr = pci_resource_start(pcidev, 1);
164 writel(main_phys_addr | WENAB, mite_base + MITE_IODWBSR);
166 /* finished with MITE registers */
171 static int ni_670x_auto_attach(struct comedi_device *dev,
172 unsigned long context)
174 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
175 const struct ni_670x_board *board = NULL;
176 struct ni_670x_private *devpriv;
177 struct comedi_subdevice *s;
181 if (context < ARRAY_SIZE(ni_670x_boards))
182 board = &ni_670x_boards[context];
185 dev->board_ptr = board;
186 dev->board_name = board->name;
188 ret = comedi_pci_enable(dev);
192 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
196 ret = ni_670x_mite_init(pcidev);
200 dev->mmio = pci_ioremap_bar(pcidev, 1);
204 ret = comedi_alloc_subdevices(dev, 2);
208 s = &dev->subdevices[0];
209 /* analog output subdevice */
210 s->type = COMEDI_SUBD_AO;
211 s->subdev_flags = SDF_WRITABLE;
212 s->n_chan = board->ao_chans;
214 if (s->n_chan == 32) {
215 const struct comedi_lrange **range_table_list;
217 range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
219 if (!range_table_list)
221 s->range_table_list = range_table_list;
222 for (i = 0; i < 16; i++) {
223 range_table_list[i] = &range_bipolar10;
224 range_table_list[16 + i] = &range_0_20mA;
227 s->range_table = &range_bipolar10;
229 s->insn_write = ni_670x_ao_insn_write;
231 ret = comedi_alloc_subdev_readback(s);
235 s = &dev->subdevices[1];
236 /* digital i/o subdevice */
237 s->type = COMEDI_SUBD_DIO;
238 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
241 s->range_table = &range_digital;
242 s->insn_bits = ni_670x_dio_insn_bits;
243 s->insn_config = ni_670x_dio_insn_config;
245 /* Config of misc registers */
246 writel(0x10, dev->mmio + MISC_CONTROL_OFFSET);
247 /* Config of ao registers */
248 writel(0x00, dev->mmio + AO_CONTROL_OFFSET);
253 static void ni_670x_detach(struct comedi_device *dev)
255 struct comedi_subdevice *s;
257 comedi_pci_detach(dev);
258 if (dev->n_subdevices) {
259 s = &dev->subdevices[0];
261 kfree(s->range_table_list);
265 static struct comedi_driver ni_670x_driver = {
266 .driver_name = "ni_670x",
267 .module = THIS_MODULE,
268 .auto_attach = ni_670x_auto_attach,
269 .detach = ni_670x_detach,
272 static int ni_670x_pci_probe(struct pci_dev *dev,
273 const struct pci_device_id *id)
275 return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
278 static const struct pci_device_id ni_670x_pci_table[] = {
279 { PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
280 { PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
281 { PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
284 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
286 static struct pci_driver ni_670x_pci_driver = {
288 .id_table = ni_670x_pci_table,
289 .probe = ni_670x_pci_probe,
290 .remove = comedi_pci_auto_unconfig,
292 module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);
294 MODULE_AUTHOR("Comedi http://www.comedi.org");
295 MODULE_DESCRIPTION("Comedi low-level driver");
296 MODULE_LICENSE("GPL");