1 // SPDX-License-Identifier: GPL-2.0+
4 * Driver for Computer Boards PC-CARD DAS16/16.
6 * COMEDI - Linux Control and Measurement Device Interface
7 * Copyright (C) 2000, 2001, 2002 David A. Schleef <ds@schleef.org>
9 * PCMCIA support code for this driver is adapted from the dummy_cs.c
10 * driver of the Linux PCMCIA Card Services package.
12 * The initial developer of the original code is David A. Hinds
13 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
14 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
19 * Description: Computer Boards PC-CARD DAS16/16
20 * Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs),
23 * Updated: Mon, 04 Nov 2002 20:04:21 -0800
24 * Status: experimental
27 #include <linux/module.h>
28 #include <linux/interrupt.h>
29 #include <linux/delay.h>
31 #include "../comedi_pcmcia.h"
33 #include "comedi_8254.h"
38 #define DAS16CS_AI_DATA_REG 0x00
39 #define DAS16CS_AI_MUX_REG 0x02
40 #define DAS16CS_AI_MUX_HI_CHAN(x) (((x) & 0xf) << 4)
41 #define DAS16CS_AI_MUX_LO_CHAN(x) (((x) & 0xf) << 0)
42 #define DAS16CS_AI_MUX_SINGLE_CHAN(x) (DAS16CS_AI_MUX_HI_CHAN(x) | \
43 DAS16CS_AI_MUX_LO_CHAN(x))
44 #define DAS16CS_MISC1_REG 0x04
45 #define DAS16CS_MISC1_INTE BIT(15) /* 1=enable; 0=disable */
46 #define DAS16CS_MISC1_INT_SRC(x) (((x) & 0x7) << 12) /* interrupt src */
47 #define DAS16CS_MISC1_INT_SRC_NONE DAS16CS_MISC1_INT_SRC(0)
48 #define DAS16CS_MISC1_INT_SRC_PACER DAS16CS_MISC1_INT_SRC(1)
49 #define DAS16CS_MISC1_INT_SRC_EXT DAS16CS_MISC1_INT_SRC(2)
50 #define DAS16CS_MISC1_INT_SRC_FNE DAS16CS_MISC1_INT_SRC(3)
51 #define DAS16CS_MISC1_INT_SRC_FHF DAS16CS_MISC1_INT_SRC(4)
52 #define DAS16CS_MISC1_INT_SRC_EOS DAS16CS_MISC1_INT_SRC(5)
53 #define DAS16CS_MISC1_INT_SRC_MASK DAS16CS_MISC1_INT_SRC(7)
54 #define DAS16CS_MISC1_OVR BIT(10) /* ro - 1=FIFO overflow */
55 #define DAS16CS_MISC1_AI_CONV(x) (((x) & 0x3) << 8) /* AI convert src */
56 #define DAS16CS_MISC1_AI_CONV_SW DAS16CS_MISC1_AI_CONV(0)
57 #define DAS16CS_MISC1_AI_CONV_EXT_NEG DAS16CS_MISC1_AI_CONV(1)
58 #define DAS16CS_MISC1_AI_CONV_EXT_POS DAS16CS_MISC1_AI_CONV(2)
59 #define DAS16CS_MISC1_AI_CONV_PACER DAS16CS_MISC1_AI_CONV(3)
60 #define DAS16CS_MISC1_AI_CONV_MASK DAS16CS_MISC1_AI_CONV(3)
61 #define DAS16CS_MISC1_EOC BIT(7) /* ro - 0=busy; 1=ready */
62 #define DAS16CS_MISC1_SEDIFF BIT(5) /* 0=diff; 1=se */
63 #define DAS16CS_MISC1_INTB BIT(4) /* ro - 0=latched; 1=cleared */
64 #define DAS16CS_MISC1_MA_MASK (0xf << 0) /* ro - current ai mux */
65 #define DAS16CS_MISC1_DAC1CS BIT(3) /* wo - DAC1 chip select */
66 #define DAS16CS_MISC1_DACCLK BIT(2) /* wo - Serial DAC clock */
67 #define DAS16CS_MISC1_DACSD BIT(1) /* wo - Serial DAC data */
68 #define DAS16CS_MISC1_DAC0CS BIT(0) /* wo - DAC0 chip select */
69 #define DAS16CS_MISC1_DAC_MASK (0x0f << 0)
70 #define DAS16CS_MISC2_REG 0x06
71 #define DAS16CS_MISC2_BME BIT(14) /* 1=burst enable; 0=disable */
72 #define DAS16CS_MISC2_AI_GAIN(x) (((x) & 0xf) << 8) /* AI gain */
73 #define DAS16CS_MISC2_AI_GAIN_1 DAS16CS_MISC2_AI_GAIN(4) /* +/-10V */
74 #define DAS16CS_MISC2_AI_GAIN_2 DAS16CS_MISC2_AI_GAIN(0) /* +/-5V */
75 #define DAS16CS_MISC2_AI_GAIN_4 DAS16CS_MISC2_AI_GAIN(1) /* +/-2.5V */
76 #define DAS16CS_MISC2_AI_GAIN_8 DAS16CS_MISC2_AI_GAIN(2) /* +-1.25V */
77 #define DAS16CS_MISC2_AI_GAIN_MASK DAS16CS_MISC2_AI_GAIN(0xf)
78 #define DAS16CS_MISC2_UDIR BIT(7) /* 1=dio7:4 output; 0=input */
79 #define DAS16CS_MISC2_LDIR BIT(6) /* 1=dio3:0 output; 0=input */
80 #define DAS16CS_MISC2_TRGPOL BIT(5) /* 1=active lo; 0=hi */
81 #define DAS16CS_MISC2_TRGSEL BIT(4) /* 1=edge; 0=level */
82 #define DAS16CS_MISC2_FFNE BIT(3) /* ro - 1=FIFO not empty */
83 #define DAS16CS_MISC2_TRGCLR BIT(3) /* wo - 1=clr (monstable) */
84 #define DAS16CS_MISC2_CLK2 BIT(2) /* 1=10 MHz; 0=1 MHz */
85 #define DAS16CS_MISC2_CTR1 BIT(1) /* 1=int. 100 kHz; 0=ext. clk */
86 #define DAS16CS_MISC2_TRG0 BIT(0) /* 1=enable; 0=disable */
87 #define DAS16CS_TIMER_BASE 0x08
88 #define DAS16CS_DIO_REG 0x10
90 struct das16cs_board {
93 unsigned int has_ao:1;
94 unsigned int has_4dio:1;
97 static const struct das16cs_board das16cs_boards[] = {
99 .name = "PC-CARD DAS16/16-AO",
104 .name = "PCM-DAS16s/16",
107 .name = "PC-CARD DAS16/16",
108 .device_id = 0x0000, /* unknown */
112 struct das16cs_private {
113 unsigned short misc1;
114 unsigned short misc2;
117 static const struct comedi_lrange das16cs_ai_range = {
126 static int das16cs_ai_eoc(struct comedi_device *dev,
127 struct comedi_subdevice *s,
128 struct comedi_insn *insn,
129 unsigned long context)
133 status = inw(dev->iobase + DAS16CS_MISC1_REG);
134 if (status & DAS16CS_MISC1_EOC)
139 static int das16cs_ai_insn_read(struct comedi_device *dev,
140 struct comedi_subdevice *s,
141 struct comedi_insn *insn,
144 struct das16cs_private *devpriv = dev->private;
145 int chan = CR_CHAN(insn->chanspec);
146 int range = CR_RANGE(insn->chanspec);
147 int aref = CR_AREF(insn->chanspec);
151 outw(DAS16CS_AI_MUX_SINGLE_CHAN(chan),
152 dev->iobase + DAS16CS_AI_MUX_REG);
154 /* disable interrupts, software convert */
155 devpriv->misc1 &= ~(DAS16CS_MISC1_INTE | DAS16CS_MISC1_INT_SRC_MASK |
156 DAS16CS_MISC1_AI_CONV_MASK);
157 if (aref == AREF_DIFF)
158 devpriv->misc1 &= ~DAS16CS_MISC1_SEDIFF;
160 devpriv->misc1 |= DAS16CS_MISC1_SEDIFF;
161 outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG);
163 devpriv->misc2 &= ~(DAS16CS_MISC2_BME | DAS16CS_MISC2_AI_GAIN_MASK);
166 devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_1;
169 devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_2;
172 devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_4;
175 devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_8;
178 outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
180 for (i = 0; i < insn->n; i++) {
181 outw(0, dev->iobase + DAS16CS_AI_DATA_REG);
183 ret = comedi_timeout(dev, s, insn, das16cs_ai_eoc, 0);
187 data[i] = inw(dev->iobase + DAS16CS_AI_DATA_REG);
193 static int das16cs_ao_insn_write(struct comedi_device *dev,
194 struct comedi_subdevice *s,
195 struct comedi_insn *insn,
198 struct das16cs_private *devpriv = dev->private;
199 unsigned int chan = CR_CHAN(insn->chanspec);
200 unsigned int val = s->readback[chan];
201 unsigned short misc1;
205 for (i = 0; i < insn->n; i++) {
208 outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG);
211 /* raise the DACxCS line for the non-selected channel */
212 misc1 = devpriv->misc1 & ~DAS16CS_MISC1_DAC_MASK;
214 misc1 |= DAS16CS_MISC1_DAC0CS;
216 misc1 |= DAS16CS_MISC1_DAC1CS;
218 outw(misc1, dev->iobase + DAS16CS_MISC1_REG);
221 for (bit = 15; bit >= 0; bit--) {
222 if ((val >> bit) & 0x1)
223 misc1 |= DAS16CS_MISC1_DACSD;
225 misc1 &= ~DAS16CS_MISC1_DACSD;
226 outw(misc1, dev->iobase + DAS16CS_MISC1_REG);
228 outw(misc1 | DAS16CS_MISC1_DACCLK,
229 dev->iobase + DAS16CS_MISC1_REG);
233 * Make both DAC0CS and DAC1CS high to load
234 * the new data and update analog the output
236 outw(misc1 | DAS16CS_MISC1_DAC0CS | DAS16CS_MISC1_DAC1CS,
237 dev->iobase + DAS16CS_MISC1_REG);
239 s->readback[chan] = val;
244 static int das16cs_dio_insn_bits(struct comedi_device *dev,
245 struct comedi_subdevice *s,
246 struct comedi_insn *insn,
249 if (comedi_dio_update_state(s, data))
250 outw(s->state, dev->iobase + DAS16CS_DIO_REG);
252 data[1] = inw(dev->iobase + DAS16CS_DIO_REG);
257 static int das16cs_dio_insn_config(struct comedi_device *dev,
258 struct comedi_subdevice *s,
259 struct comedi_insn *insn,
262 struct das16cs_private *devpriv = dev->private;
263 unsigned int chan = CR_CHAN(insn->chanspec);
272 ret = comedi_dio_insn_config(dev, s, insn, data, mask);
276 if (s->io_bits & 0xf0)
277 devpriv->misc2 |= DAS16CS_MISC2_UDIR;
279 devpriv->misc2 &= ~DAS16CS_MISC2_UDIR;
280 if (s->io_bits & 0x0f)
281 devpriv->misc2 |= DAS16CS_MISC2_LDIR;
283 devpriv->misc2 &= ~DAS16CS_MISC2_LDIR;
284 outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
289 static int das16cs_counter_insn_config(struct comedi_device *dev,
290 struct comedi_subdevice *s,
291 struct comedi_insn *insn,
294 struct das16cs_private *devpriv = dev->private;
297 case INSN_CONFIG_SET_CLOCK_SRC:
299 case 0: /* internal 100 kHz */
300 devpriv->misc2 |= DAS16CS_MISC2_CTR1;
302 case 1: /* external */
303 devpriv->misc2 &= ~DAS16CS_MISC2_CTR1;
308 outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
310 case INSN_CONFIG_GET_CLOCK_SRC:
311 if (devpriv->misc2 & DAS16CS_MISC2_CTR1) {
313 data[2] = I8254_OSC_BASE_100KHZ;
316 data[2] = 0; /* unknown */
326 static const void *das16cs_find_boardinfo(struct comedi_device *dev,
327 struct pcmcia_device *link)
329 const struct das16cs_board *board;
332 for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) {
333 board = &das16cs_boards[i];
334 if (board->device_id == link->card_id)
341 static int das16cs_auto_attach(struct comedi_device *dev,
342 unsigned long context)
344 struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
345 const struct das16cs_board *board;
346 struct das16cs_private *devpriv;
347 struct comedi_subdevice *s;
350 board = das16cs_find_boardinfo(dev, link);
353 dev->board_ptr = board;
354 dev->board_name = board->name;
356 link->config_flags |= CONF_AUTO_SET_IO | CONF_ENABLE_IRQ;
357 ret = comedi_pcmcia_enable(dev, NULL);
360 dev->iobase = link->resource[0]->start;
364 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
368 dev->pacer = comedi_8254_init(dev->iobase + DAS16CS_TIMER_BASE,
369 I8254_OSC_BASE_10MHZ, I8254_IO16, 0);
373 ret = comedi_alloc_subdevices(dev, 4);
377 /* Analog Input subdevice */
378 s = &dev->subdevices[0];
379 s->type = COMEDI_SUBD_AI;
380 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
383 s->range_table = &das16cs_ai_range;
384 s->insn_read = das16cs_ai_insn_read;
386 /* Analog Output subdevice */
387 s = &dev->subdevices[1];
389 s->type = COMEDI_SUBD_AO;
390 s->subdev_flags = SDF_WRITABLE;
393 s->range_table = &range_bipolar10;
394 s->insn_write = &das16cs_ao_insn_write;
396 ret = comedi_alloc_subdev_readback(s);
400 s->type = COMEDI_SUBD_UNUSED;
403 /* Digital I/O subdevice */
404 s = &dev->subdevices[2];
405 s->type = COMEDI_SUBD_DIO;
406 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
407 s->n_chan = board->has_4dio ? 4 : 8;
409 s->range_table = &range_digital;
410 s->insn_bits = das16cs_dio_insn_bits;
411 s->insn_config = das16cs_dio_insn_config;
413 /* Counter subdevice (8254) */
414 s = &dev->subdevices[3];
415 comedi_8254_subdevice_init(s, dev->pacer);
417 dev->pacer->insn_config = das16cs_counter_insn_config;
419 /* counters 1 and 2 are used internally for the pacer */
420 comedi_8254_set_busy(dev->pacer, 1, true);
421 comedi_8254_set_busy(dev->pacer, 2, true);
426 static struct comedi_driver driver_das16cs = {
427 .driver_name = "cb_das16_cs",
428 .module = THIS_MODULE,
429 .auto_attach = das16cs_auto_attach,
430 .detach = comedi_pcmcia_disable,
433 static int das16cs_pcmcia_attach(struct pcmcia_device *link)
435 return comedi_pcmcia_auto_config(link, &driver_das16cs);
438 static const struct pcmcia_device_id das16cs_id_table[] = {
439 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
440 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
443 MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
445 static struct pcmcia_driver das16cs_driver = {
446 .name = "cb_das16_cs",
447 .owner = THIS_MODULE,
448 .id_table = das16cs_id_table,
449 .probe = das16cs_pcmcia_attach,
450 .remove = comedi_pcmcia_auto_unconfig,
452 module_comedi_pcmcia_driver(driver_das16cs, das16cs_driver);
454 MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
455 MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
456 MODULE_LICENSE("GPL");