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>
30 #include <linux/comedi/comedi_pcmcia.h>
31 #include <linux/comedi/comedi_8254.h>
36 #define DAS16CS_AI_DATA_REG 0x00
37 #define DAS16CS_AI_MUX_REG 0x02
38 #define DAS16CS_AI_MUX_HI_CHAN(x) (((x) & 0xf) << 4)
39 #define DAS16CS_AI_MUX_LO_CHAN(x) (((x) & 0xf) << 0)
40 #define DAS16CS_AI_MUX_SINGLE_CHAN(x) (DAS16CS_AI_MUX_HI_CHAN(x) | \
41 DAS16CS_AI_MUX_LO_CHAN(x))
42 #define DAS16CS_MISC1_REG 0x04
43 #define DAS16CS_MISC1_INTE BIT(15) /* 1=enable; 0=disable */
44 #define DAS16CS_MISC1_INT_SRC(x) (((x) & 0x7) << 12) /* interrupt src */
45 #define DAS16CS_MISC1_INT_SRC_NONE DAS16CS_MISC1_INT_SRC(0)
46 #define DAS16CS_MISC1_INT_SRC_PACER DAS16CS_MISC1_INT_SRC(1)
47 #define DAS16CS_MISC1_INT_SRC_EXT DAS16CS_MISC1_INT_SRC(2)
48 #define DAS16CS_MISC1_INT_SRC_FNE DAS16CS_MISC1_INT_SRC(3)
49 #define DAS16CS_MISC1_INT_SRC_FHF DAS16CS_MISC1_INT_SRC(4)
50 #define DAS16CS_MISC1_INT_SRC_EOS DAS16CS_MISC1_INT_SRC(5)
51 #define DAS16CS_MISC1_INT_SRC_MASK DAS16CS_MISC1_INT_SRC(7)
52 #define DAS16CS_MISC1_OVR BIT(10) /* ro - 1=FIFO overflow */
53 #define DAS16CS_MISC1_AI_CONV(x) (((x) & 0x3) << 8) /* AI convert src */
54 #define DAS16CS_MISC1_AI_CONV_SW DAS16CS_MISC1_AI_CONV(0)
55 #define DAS16CS_MISC1_AI_CONV_EXT_NEG DAS16CS_MISC1_AI_CONV(1)
56 #define DAS16CS_MISC1_AI_CONV_EXT_POS DAS16CS_MISC1_AI_CONV(2)
57 #define DAS16CS_MISC1_AI_CONV_PACER DAS16CS_MISC1_AI_CONV(3)
58 #define DAS16CS_MISC1_AI_CONV_MASK DAS16CS_MISC1_AI_CONV(3)
59 #define DAS16CS_MISC1_EOC BIT(7) /* ro - 0=busy; 1=ready */
60 #define DAS16CS_MISC1_SEDIFF BIT(5) /* 0=diff; 1=se */
61 #define DAS16CS_MISC1_INTB BIT(4) /* ro - 0=latched; 1=cleared */
62 #define DAS16CS_MISC1_MA_MASK (0xf << 0) /* ro - current ai mux */
63 #define DAS16CS_MISC1_DAC1CS BIT(3) /* wo - DAC1 chip select */
64 #define DAS16CS_MISC1_DACCLK BIT(2) /* wo - Serial DAC clock */
65 #define DAS16CS_MISC1_DACSD BIT(1) /* wo - Serial DAC data */
66 #define DAS16CS_MISC1_DAC0CS BIT(0) /* wo - DAC0 chip select */
67 #define DAS16CS_MISC1_DAC_MASK (0x0f << 0)
68 #define DAS16CS_MISC2_REG 0x06
69 #define DAS16CS_MISC2_BME BIT(14) /* 1=burst enable; 0=disable */
70 #define DAS16CS_MISC2_AI_GAIN(x) (((x) & 0xf) << 8) /* AI gain */
71 #define DAS16CS_MISC2_AI_GAIN_1 DAS16CS_MISC2_AI_GAIN(4) /* +/-10V */
72 #define DAS16CS_MISC2_AI_GAIN_2 DAS16CS_MISC2_AI_GAIN(0) /* +/-5V */
73 #define DAS16CS_MISC2_AI_GAIN_4 DAS16CS_MISC2_AI_GAIN(1) /* +/-2.5V */
74 #define DAS16CS_MISC2_AI_GAIN_8 DAS16CS_MISC2_AI_GAIN(2) /* +-1.25V */
75 #define DAS16CS_MISC2_AI_GAIN_MASK DAS16CS_MISC2_AI_GAIN(0xf)
76 #define DAS16CS_MISC2_UDIR BIT(7) /* 1=dio7:4 output; 0=input */
77 #define DAS16CS_MISC2_LDIR BIT(6) /* 1=dio3:0 output; 0=input */
78 #define DAS16CS_MISC2_TRGPOL BIT(5) /* 1=active lo; 0=hi */
79 #define DAS16CS_MISC2_TRGSEL BIT(4) /* 1=edge; 0=level */
80 #define DAS16CS_MISC2_FFNE BIT(3) /* ro - 1=FIFO not empty */
81 #define DAS16CS_MISC2_TRGCLR BIT(3) /* wo - 1=clr (monstable) */
82 #define DAS16CS_MISC2_CLK2 BIT(2) /* 1=10 MHz; 0=1 MHz */
83 #define DAS16CS_MISC2_CTR1 BIT(1) /* 1=int. 100 kHz; 0=ext. clk */
84 #define DAS16CS_MISC2_TRG0 BIT(0) /* 1=enable; 0=disable */
85 #define DAS16CS_TIMER_BASE 0x08
86 #define DAS16CS_DIO_REG 0x10
88 struct das16cs_board {
91 unsigned int has_ao:1;
92 unsigned int has_4dio:1;
95 static const struct das16cs_board das16cs_boards[] = {
97 .name = "PC-CARD DAS16/16-AO",
102 .name = "PCM-DAS16s/16",
105 .name = "PC-CARD DAS16/16",
106 .device_id = 0x0000, /* unknown */
110 struct das16cs_private {
111 unsigned short misc1;
112 unsigned short misc2;
115 static const struct comedi_lrange das16cs_ai_range = {
124 static int das16cs_ai_eoc(struct comedi_device *dev,
125 struct comedi_subdevice *s,
126 struct comedi_insn *insn,
127 unsigned long context)
131 status = inw(dev->iobase + DAS16CS_MISC1_REG);
132 if (status & DAS16CS_MISC1_EOC)
137 static int das16cs_ai_insn_read(struct comedi_device *dev,
138 struct comedi_subdevice *s,
139 struct comedi_insn *insn,
142 struct das16cs_private *devpriv = dev->private;
143 int chan = CR_CHAN(insn->chanspec);
144 int range = CR_RANGE(insn->chanspec);
145 int aref = CR_AREF(insn->chanspec);
149 outw(DAS16CS_AI_MUX_SINGLE_CHAN(chan),
150 dev->iobase + DAS16CS_AI_MUX_REG);
152 /* disable interrupts, software convert */
153 devpriv->misc1 &= ~(DAS16CS_MISC1_INTE | DAS16CS_MISC1_INT_SRC_MASK |
154 DAS16CS_MISC1_AI_CONV_MASK);
155 if (aref == AREF_DIFF)
156 devpriv->misc1 &= ~DAS16CS_MISC1_SEDIFF;
158 devpriv->misc1 |= DAS16CS_MISC1_SEDIFF;
159 outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG);
161 devpriv->misc2 &= ~(DAS16CS_MISC2_BME | DAS16CS_MISC2_AI_GAIN_MASK);
164 devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_1;
167 devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_2;
170 devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_4;
173 devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_8;
176 outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
178 for (i = 0; i < insn->n; i++) {
179 outw(0, dev->iobase + DAS16CS_AI_DATA_REG);
181 ret = comedi_timeout(dev, s, insn, das16cs_ai_eoc, 0);
185 data[i] = inw(dev->iobase + DAS16CS_AI_DATA_REG);
191 static int das16cs_ao_insn_write(struct comedi_device *dev,
192 struct comedi_subdevice *s,
193 struct comedi_insn *insn,
196 struct das16cs_private *devpriv = dev->private;
197 unsigned int chan = CR_CHAN(insn->chanspec);
198 unsigned int val = s->readback[chan];
199 unsigned short misc1;
203 for (i = 0; i < insn->n; i++) {
206 outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG);
209 /* raise the DACxCS line for the non-selected channel */
210 misc1 = devpriv->misc1 & ~DAS16CS_MISC1_DAC_MASK;
212 misc1 |= DAS16CS_MISC1_DAC0CS;
214 misc1 |= DAS16CS_MISC1_DAC1CS;
216 outw(misc1, dev->iobase + DAS16CS_MISC1_REG);
219 for (bit = 15; bit >= 0; bit--) {
220 if ((val >> bit) & 0x1)
221 misc1 |= DAS16CS_MISC1_DACSD;
223 misc1 &= ~DAS16CS_MISC1_DACSD;
224 outw(misc1, dev->iobase + DAS16CS_MISC1_REG);
226 outw(misc1 | DAS16CS_MISC1_DACCLK,
227 dev->iobase + DAS16CS_MISC1_REG);
231 * Make both DAC0CS and DAC1CS high to load
232 * the new data and update analog the output
234 outw(misc1 | DAS16CS_MISC1_DAC0CS | DAS16CS_MISC1_DAC1CS,
235 dev->iobase + DAS16CS_MISC1_REG);
237 s->readback[chan] = val;
242 static int das16cs_dio_insn_bits(struct comedi_device *dev,
243 struct comedi_subdevice *s,
244 struct comedi_insn *insn,
247 if (comedi_dio_update_state(s, data))
248 outw(s->state, dev->iobase + DAS16CS_DIO_REG);
250 data[1] = inw(dev->iobase + DAS16CS_DIO_REG);
255 static int das16cs_dio_insn_config(struct comedi_device *dev,
256 struct comedi_subdevice *s,
257 struct comedi_insn *insn,
260 struct das16cs_private *devpriv = dev->private;
261 unsigned int chan = CR_CHAN(insn->chanspec);
270 ret = comedi_dio_insn_config(dev, s, insn, data, mask);
274 if (s->io_bits & 0xf0)
275 devpriv->misc2 |= DAS16CS_MISC2_UDIR;
277 devpriv->misc2 &= ~DAS16CS_MISC2_UDIR;
278 if (s->io_bits & 0x0f)
279 devpriv->misc2 |= DAS16CS_MISC2_LDIR;
281 devpriv->misc2 &= ~DAS16CS_MISC2_LDIR;
282 outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
287 static int das16cs_counter_insn_config(struct comedi_device *dev,
288 struct comedi_subdevice *s,
289 struct comedi_insn *insn,
292 struct das16cs_private *devpriv = dev->private;
295 case INSN_CONFIG_SET_CLOCK_SRC:
297 case 0: /* internal 100 kHz */
298 devpriv->misc2 |= DAS16CS_MISC2_CTR1;
300 case 1: /* external */
301 devpriv->misc2 &= ~DAS16CS_MISC2_CTR1;
306 outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
308 case INSN_CONFIG_GET_CLOCK_SRC:
309 if (devpriv->misc2 & DAS16CS_MISC2_CTR1) {
311 data[2] = I8254_OSC_BASE_100KHZ;
314 data[2] = 0; /* unknown */
324 static const void *das16cs_find_boardinfo(struct comedi_device *dev,
325 struct pcmcia_device *link)
327 const struct das16cs_board *board;
330 for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) {
331 board = &das16cs_boards[i];
332 if (board->device_id == link->card_id)
339 static int das16cs_auto_attach(struct comedi_device *dev,
340 unsigned long context)
342 struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
343 const struct das16cs_board *board;
344 struct das16cs_private *devpriv;
345 struct comedi_subdevice *s;
348 board = das16cs_find_boardinfo(dev, link);
351 dev->board_ptr = board;
352 dev->board_name = board->name;
354 link->config_flags |= CONF_AUTO_SET_IO | CONF_ENABLE_IRQ;
355 ret = comedi_pcmcia_enable(dev, NULL);
358 dev->iobase = link->resource[0]->start;
362 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
366 dev->pacer = comedi_8254_io_alloc(dev->iobase + DAS16CS_TIMER_BASE,
367 I8254_OSC_BASE_10MHZ, I8254_IO16, 0);
368 if (IS_ERR(dev->pacer))
369 return PTR_ERR(dev->pacer);
371 ret = comedi_alloc_subdevices(dev, 4);
375 /* Analog Input subdevice */
376 s = &dev->subdevices[0];
377 s->type = COMEDI_SUBD_AI;
378 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
381 s->range_table = &das16cs_ai_range;
382 s->insn_read = das16cs_ai_insn_read;
384 /* Analog Output subdevice */
385 s = &dev->subdevices[1];
387 s->type = COMEDI_SUBD_AO;
388 s->subdev_flags = SDF_WRITABLE;
391 s->range_table = &range_bipolar10;
392 s->insn_write = &das16cs_ao_insn_write;
394 ret = comedi_alloc_subdev_readback(s);
398 s->type = COMEDI_SUBD_UNUSED;
401 /* Digital I/O subdevice */
402 s = &dev->subdevices[2];
403 s->type = COMEDI_SUBD_DIO;
404 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
405 s->n_chan = board->has_4dio ? 4 : 8;
407 s->range_table = &range_digital;
408 s->insn_bits = das16cs_dio_insn_bits;
409 s->insn_config = das16cs_dio_insn_config;
411 /* Counter subdevice (8254) */
412 s = &dev->subdevices[3];
413 comedi_8254_subdevice_init(s, dev->pacer);
415 dev->pacer->insn_config = das16cs_counter_insn_config;
417 /* counters 1 and 2 are used internally for the pacer */
418 comedi_8254_set_busy(dev->pacer, 1, true);
419 comedi_8254_set_busy(dev->pacer, 2, true);
424 static struct comedi_driver driver_das16cs = {
425 .driver_name = "cb_das16_cs",
426 .module = THIS_MODULE,
427 .auto_attach = das16cs_auto_attach,
428 .detach = comedi_pcmcia_disable,
431 static int das16cs_pcmcia_attach(struct pcmcia_device *link)
433 return comedi_pcmcia_auto_config(link, &driver_das16cs);
436 static const struct pcmcia_device_id das16cs_id_table[] = {
437 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
438 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
441 MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
443 static struct pcmcia_driver das16cs_driver = {
444 .name = "cb_das16_cs",
445 .owner = THIS_MODULE,
446 .id_table = das16cs_id_table,
447 .probe = das16cs_pcmcia_attach,
448 .remove = comedi_pcmcia_auto_unconfig,
450 module_comedi_pcmcia_driver(driver_das16cs, das16cs_driver);
452 MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
453 MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
454 MODULE_LICENSE("GPL");