3 * Copyright (C) 2004,2005 ADDI-DATA GmbH for the source code of this module.
4 * Project manager: Eric Stolz
9 * Tel: +19(0)7223/9493-0
10 * Fax: +49(0)7223/9493-92
11 * http://www.addi-data.com
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2 of the License, or (at your
17 * option) any later version.
19 * This program is distributed in the hope that it will be useful, but WITHOUT
20 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
21 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
25 #include <linux/module.h>
26 #include <linux/interrupt.h>
27 #include <linux/sched.h>
29 #include "../comedi_pci.h"
31 #include "amcc_s5933.h"
34 * PCI bar 1 register I/O map
36 #define APCI3501_AO_CTRL_STATUS_REG 0x00
37 #define APCI3501_AO_CTRL_BIPOLAR BIT(0)
38 #define APCI3501_AO_STATUS_READY BIT(8)
39 #define APCI3501_AO_DATA_REG 0x04
40 #define APCI3501_AO_DATA_CHAN(x) ((x) << 0)
41 #define APCI3501_AO_DATA_VAL(x) ((x) << 8)
42 #define APCI3501_AO_DATA_BIPOLAR BIT(31)
43 #define APCI3501_AO_TRIG_SCS_REG 0x08
44 #define APCI3501_TIMER_BASE 0x20
45 #define APCI3501_DO_REG 0x40
46 #define APCI3501_DI_REG 0x50
51 #define NVRAM_USER_DATA_START 0x100
53 #define NVCMD_BEGIN_READ (0x7 << 5)
54 #define NVCMD_LOAD_LOW (0x4 << 5)
55 #define NVCMD_LOAD_HIGH (0x5 << 5)
58 * Function types stored in the eeprom
60 #define EEPROM_DIGITALINPUT 0
61 #define EEPROM_DIGITALOUTPUT 1
62 #define EEPROM_ANALOGINPUT 2
63 #define EEPROM_ANALOGOUTPUT 3
64 #define EEPROM_TIMER 4
65 #define EEPROM_WATCHDOG 5
66 #define EEPROM_TIMER_WATCHDOG_COUNTER 10
68 struct apci3501_private {
71 struct task_struct *tsk_Current;
72 unsigned char timer_mode;
75 static struct comedi_lrange apci3501_ao_range = {
82 static int apci3501_wait_for_dac(struct comedi_device *dev)
87 status = inl(dev->iobase + APCI3501_AO_CTRL_STATUS_REG);
88 } while (!(status & APCI3501_AO_STATUS_READY));
93 static int apci3501_ao_insn_write(struct comedi_device *dev,
94 struct comedi_subdevice *s,
95 struct comedi_insn *insn,
98 unsigned int chan = CR_CHAN(insn->chanspec);
99 unsigned int range = CR_RANGE(insn->chanspec);
100 unsigned int cfg = APCI3501_AO_DATA_CHAN(chan);
105 * All analog output channels have the same output range.
106 * 14-bit bipolar: 0-10V
107 * 13-bit unipolar: +/-10V
108 * Changing the range of one channel changes all of them!
111 outl(0, dev->iobase + APCI3501_AO_CTRL_STATUS_REG);
113 cfg |= APCI3501_AO_DATA_BIPOLAR;
114 outl(APCI3501_AO_CTRL_BIPOLAR,
115 dev->iobase + APCI3501_AO_CTRL_STATUS_REG);
118 for (i = 0; i < insn->n; i++) {
119 unsigned int val = data[i];
122 if (data[i] > 0x1fff) {
123 dev_err(dev->class_dev,
124 "Unipolar resolution is only 13-bits\n");
129 ret = apci3501_wait_for_dac(dev);
133 outl(cfg | APCI3501_AO_DATA_VAL(val),
134 dev->iobase + APCI3501_AO_DATA_REG);
136 s->readback[chan] = val;
142 #include "addi-data/hwdrv_apci3501.c"
144 static int apci3501_di_insn_bits(struct comedi_device *dev,
145 struct comedi_subdevice *s,
146 struct comedi_insn *insn,
149 data[1] = inl(dev->iobase + APCI3501_DI_REG) & 0x3;
154 static int apci3501_do_insn_bits(struct comedi_device *dev,
155 struct comedi_subdevice *s,
156 struct comedi_insn *insn,
159 s->state = inl(dev->iobase + APCI3501_DO_REG);
161 if (comedi_dio_update_state(s, data))
162 outl(s->state, dev->iobase + APCI3501_DO_REG);
169 static void apci3501_eeprom_wait(unsigned long iobase)
174 val = inb(iobase + AMCC_OP_REG_MCSR_NVCMD);
175 } while (val & 0x80);
178 static unsigned short apci3501_eeprom_readw(unsigned long iobase,
181 unsigned short val = 0;
185 /* Add the offset to the start of the user data */
186 addr += NVRAM_USER_DATA_START;
188 for (i = 0; i < 2; i++) {
189 /* Load the low 8 bit address */
190 outb(NVCMD_LOAD_LOW, iobase + AMCC_OP_REG_MCSR_NVCMD);
191 apci3501_eeprom_wait(iobase);
192 outb((addr + i) & 0xff, iobase + AMCC_OP_REG_MCSR_NVDATA);
193 apci3501_eeprom_wait(iobase);
195 /* Load the high 8 bit address */
196 outb(NVCMD_LOAD_HIGH, iobase + AMCC_OP_REG_MCSR_NVCMD);
197 apci3501_eeprom_wait(iobase);
198 outb(((addr + i) >> 8) & 0xff,
199 iobase + AMCC_OP_REG_MCSR_NVDATA);
200 apci3501_eeprom_wait(iobase);
202 /* Read the eeprom data byte */
203 outb(NVCMD_BEGIN_READ, iobase + AMCC_OP_REG_MCSR_NVCMD);
204 apci3501_eeprom_wait(iobase);
205 tmp = inb(iobase + AMCC_OP_REG_MCSR_NVDATA);
206 apci3501_eeprom_wait(iobase);
217 static int apci3501_eeprom_get_ao_n_chan(struct comedi_device *dev)
219 struct apci3501_private *devpriv = dev->private;
220 unsigned char nfuncs;
223 nfuncs = apci3501_eeprom_readw(devpriv->amcc, 10) & 0xff;
225 /* Read functionality details */
226 for (i = 0; i < nfuncs; i++) {
227 unsigned short offset = i * 4;
232 func = apci3501_eeprom_readw(devpriv->amcc, 12 + offset) & 0x3f;
233 addr = apci3501_eeprom_readw(devpriv->amcc, 14 + offset);
235 if (func == EEPROM_ANALOGOUTPUT) {
236 val = apci3501_eeprom_readw(devpriv->amcc, addr + 10);
237 return (val >> 4) & 0x3ff;
243 static int apci3501_eeprom_insn_read(struct comedi_device *dev,
244 struct comedi_subdevice *s,
245 struct comedi_insn *insn,
248 struct apci3501_private *devpriv = dev->private;
249 unsigned short addr = CR_CHAN(insn->chanspec);
251 data[0] = apci3501_eeprom_readw(devpriv->amcc, 2 * addr);
256 static irqreturn_t apci3501_interrupt(int irq, void *d)
258 struct comedi_device *dev = d;
259 struct apci3501_private *devpriv = dev->private;
263 /* Disable Interrupt */
264 ctrl = inl(devpriv->tcw + ADDI_TCW_CTRL_REG);
265 ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG |
266 ADDI_TCW_CTRL_IRQ_ENA);
267 outl(ctrl, devpriv->tcw + ADDI_TCW_CTRL_REG);
269 status = inl(devpriv->tcw + ADDI_TCW_IRQ_REG);
270 if (!(status & ADDI_TCW_IRQ)) {
271 dev_err(dev->class_dev, "IRQ from unknown source\n");
275 /* Enable Interrupt Send a signal to from kernel to user space */
276 send_sig(SIGIO, devpriv->tsk_Current, 0);
277 ctrl = inl(devpriv->tcw + ADDI_TCW_CTRL_REG);
278 ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG |
279 ADDI_TCW_CTRL_IRQ_ENA);
280 ctrl |= ADDI_TCW_CTRL_IRQ_ENA;
281 outl(ctrl, devpriv->tcw + ADDI_TCW_CTRL_REG);
282 inl(devpriv->tcw + ADDI_TCW_STATUS_REG);
287 static int apci3501_reset(struct comedi_device *dev)
293 /* Reset all digital outputs to "0" */
294 outl(0x0, dev->iobase + APCI3501_DO_REG);
296 /* Default all analog outputs to 0V (bipolar) */
297 outl(APCI3501_AO_CTRL_BIPOLAR,
298 dev->iobase + APCI3501_AO_CTRL_STATUS_REG);
299 val = APCI3501_AO_DATA_BIPOLAR | APCI3501_AO_DATA_VAL(0);
301 /* Set all analog output channels */
302 for (chan = 0; chan < 8; chan++) {
303 ret = apci3501_wait_for_dac(dev);
305 dev_warn(dev->class_dev,
306 "%s: DAC not-ready for channel %i\n",
309 outl(val | APCI3501_AO_DATA_CHAN(chan),
310 dev->iobase + APCI3501_AO_DATA_REG);
317 static int apci3501_auto_attach(struct comedi_device *dev,
318 unsigned long context_unused)
320 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
321 struct apci3501_private *devpriv;
322 struct comedi_subdevice *s;
326 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
330 ret = comedi_pci_enable(dev);
334 devpriv->amcc = pci_resource_start(pcidev, 0);
335 dev->iobase = pci_resource_start(pcidev, 1);
336 devpriv->tcw = dev->iobase + APCI3501_TIMER_BASE;
338 ao_n_chan = apci3501_eeprom_get_ao_n_chan(dev);
340 if (pcidev->irq > 0) {
341 ret = request_irq(pcidev->irq, apci3501_interrupt, IRQF_SHARED,
342 dev->board_name, dev);
344 dev->irq = pcidev->irq;
347 ret = comedi_alloc_subdevices(dev, 5);
351 /* Initialize the analog output subdevice */
352 s = &dev->subdevices[0];
354 s->type = COMEDI_SUBD_AO;
355 s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
356 s->n_chan = ao_n_chan;
358 s->range_table = &apci3501_ao_range;
359 s->insn_write = apci3501_ao_insn_write;
361 ret = comedi_alloc_subdev_readback(s);
365 s->type = COMEDI_SUBD_UNUSED;
368 /* Initialize the digital input subdevice */
369 s = &dev->subdevices[1];
370 s->type = COMEDI_SUBD_DI;
371 s->subdev_flags = SDF_READABLE;
374 s->range_table = &range_digital;
375 s->insn_bits = apci3501_di_insn_bits;
377 /* Initialize the digital output subdevice */
378 s = &dev->subdevices[2];
379 s->type = COMEDI_SUBD_DO;
380 s->subdev_flags = SDF_WRITABLE;
383 s->range_table = &range_digital;
384 s->insn_bits = apci3501_do_insn_bits;
386 /* Initialize the timer/watchdog subdevice */
387 s = &dev->subdevices[3];
388 s->type = COMEDI_SUBD_TIMER;
389 s->subdev_flags = SDF_WRITABLE;
393 s->range_table = &range_digital;
394 s->insn_write = apci3501_write_insn_timer;
395 s->insn_read = apci3501_read_insn_timer;
396 s->insn_config = apci3501_config_insn_timer;
398 /* Initialize the eeprom subdevice */
399 s = &dev->subdevices[4];
400 s->type = COMEDI_SUBD_MEMORY;
401 s->subdev_flags = SDF_READABLE | SDF_INTERNAL;
404 s->insn_read = apci3501_eeprom_insn_read;
410 static void apci3501_detach(struct comedi_device *dev)
414 comedi_pci_detach(dev);
417 static struct comedi_driver apci3501_driver = {
418 .driver_name = "addi_apci_3501",
419 .module = THIS_MODULE,
420 .auto_attach = apci3501_auto_attach,
421 .detach = apci3501_detach,
424 static int apci3501_pci_probe(struct pci_dev *dev,
425 const struct pci_device_id *id)
427 return comedi_pci_auto_config(dev, &apci3501_driver, id->driver_data);
430 static const struct pci_device_id apci3501_pci_table[] = {
431 { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x3001) },
434 MODULE_DEVICE_TABLE(pci, apci3501_pci_table);
436 static struct pci_driver apci3501_pci_driver = {
437 .name = "addi_apci_3501",
438 .id_table = apci3501_pci_table,
439 .probe = apci3501_pci_probe,
440 .remove = comedi_pci_auto_unconfig,
442 module_comedi_pci_driver(apci3501_driver, apci3501_pci_driver);
444 MODULE_DESCRIPTION("ADDI-DATA APCI-3501 Analog output board");
445 MODULE_AUTHOR("Comedi http://www.comedi.org");
446 MODULE_LICENSE("GPL");