pcl726.c revision 68c3dbff9fc9f25872408d0e95980d41733d48d0
1/* 2 comedi/drivers/pcl726.c 3 4 hardware driver for Advantech cards: 5 card: PCL-726, PCL-727, PCL-728 6 driver: pcl726, pcl727, pcl728 7 and for ADLink cards: 8 card: ACL-6126, ACL-6128 9 driver: acl6126, acl6128 10 11 COMEDI - Linux Control and Measurement Device Interface 12 Copyright (C) 1998 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*/ 29/* 30Driver: pcl726 31Description: Advantech PCL-726 & compatibles 32Author: ds 33Status: untested 34Devices: [Advantech] PCL-726 (pcl726), PCL-727 (pcl727), PCL-728 (pcl728), 35 [ADLink] ACL-6126 (acl6126), ACL-6128 (acl6128) 36 37Interrupts are not supported. 38 39 Options for PCL-726: 40 [0] - IO Base 41 [2]...[7] - D/A output range for channel 1-6: 42 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V, 43 4: 4-20mA, 5: unknown (external reference) 44 45 Options for PCL-727: 46 [0] - IO Base 47 [2]...[13] - D/A output range for channel 1-12: 48 0: 0-5V, 1: 0-10V, 2: +/-5V, 49 3: 4-20mA 50 51 Options for PCL-728 and ACL-6128: 52 [0] - IO Base 53 [2], [3] - D/A output range for channel 1 and 2: 54 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V, 55 4: 4-20mA, 5: 0-20mA 56 57 Options for ACL-6126: 58 [0] - IO Base 59 [1] - IRQ (0=disable, 3, 5, 6, 7, 9, 10, 11, 12, 15) (currently ignored) 60 [2]...[7] - D/A output range for channel 1-6: 61 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V, 62 4: 4-20mA 63*/ 64 65/* 66 Thanks to Circuit Specialists for having programming info (!) on 67 their web page. (http://www.cir.com/) 68*/ 69 70#include "../comedidev.h" 71 72#include <linux/ioport.h> 73 74#undef ACL6126_IRQ /* no interrupt support (yet) */ 75 76#define PCL726_SIZE 16 77#define PCL727_SIZE 32 78#define PCL728_SIZE 8 79 80#define PCL726_DAC0_HI 0 81#define PCL726_DAC0_LO 1 82 83#define PCL726_DO_HI 12 84#define PCL726_DO_LO 13 85#define PCL726_DI_HI 14 86#define PCL726_DI_LO 15 87 88#define PCL727_DO_HI 24 89#define PCL727_DO_LO 25 90#define PCL727_DI_HI 0 91#define PCL727_DI_LO 1 92 93static const struct comedi_lrange range_4_20mA = { 1, {RANGE_mA(4, 20)} }; 94static const struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} }; 95 96static const struct comedi_lrange *const rangelist_726[] = { 97 &range_unipolar5, &range_unipolar10, 98 &range_bipolar5, &range_bipolar10, 99 &range_4_20mA, &range_unknown 100}; 101 102static const struct comedi_lrange *const rangelist_727[] = { 103 &range_unipolar5, &range_unipolar10, 104 &range_bipolar5, 105 &range_4_20mA 106}; 107 108static const struct comedi_lrange *const rangelist_728[] = { 109 &range_unipolar5, &range_unipolar10, 110 &range_bipolar5, &range_bipolar10, 111 &range_4_20mA, &range_0_20mA 112}; 113 114static int pcl726_attach(struct comedi_device *dev, struct comedi_devconfig *it); 115static int pcl726_detach(struct comedi_device *dev); 116 117struct pcl726_board { 118 119 const char *name; /* driver name */ 120 int n_aochan; /* num of D/A chans */ 121 int num_of_ranges; /* num of ranges */ 122 unsigned int IRQbits; /* allowed interrupts */ 123 unsigned int io_range; /* len of IO space */ 124 char have_dio; /* 1=card have DI/DO ports */ 125 int di_hi; /* ports for DI/DO operations */ 126 int di_lo; 127 int do_hi; 128 int do_lo; 129 const struct comedi_lrange *const *range_type_list; /* list of supported ranges */ 130}; 131 132 133static const struct pcl726_board boardtypes[] = { 134 {"pcl726", 6, 6, 0x0000, PCL726_SIZE, 1, 135 PCL726_DI_HI, PCL726_DI_LO, PCL726_DO_HI, PCL726_DO_LO, 136 &rangelist_726[0],}, 137 {"pcl727", 12, 4, 0x0000, PCL727_SIZE, 1, 138 PCL727_DI_HI, PCL727_DI_LO, PCL727_DO_HI, PCL727_DO_LO, 139 &rangelist_727[0],}, 140 {"pcl728", 2, 6, 0x0000, PCL728_SIZE, 0, 141 0, 0, 0, 0, 142 &rangelist_728[0],}, 143 {"acl6126", 6, 5, 0x96e8, PCL726_SIZE, 1, 144 PCL726_DI_HI, PCL726_DI_LO, PCL726_DO_HI, PCL726_DO_LO, 145 &rangelist_726[0],}, 146 {"acl6128", 2, 6, 0x0000, PCL728_SIZE, 0, 147 0, 0, 0, 0, 148 &rangelist_728[0],}, 149}; 150 151#define n_boardtypes (sizeof(boardtypes)/sizeof(struct pcl726_board)) 152#define this_board ((const struct pcl726_board *)dev->board_ptr) 153 154static struct comedi_driver driver_pcl726 = { 155 .driver_name = "pcl726", 156 .module = THIS_MODULE, 157 .attach = pcl726_attach, 158 .detach = pcl726_detach, 159 .board_name = &boardtypes[0].name, 160 .num_names = n_boardtypes, 161 .offset = sizeof(struct pcl726_board), 162}; 163 164COMEDI_INITCLEANUP(driver_pcl726); 165 166struct pcl726_private { 167 168 int bipolar[12]; 169 const struct comedi_lrange *rangelist[12]; 170 unsigned int ao_readback[12]; 171}; 172 173#define devpriv ((struct pcl726_private *)dev->private) 174 175static int pcl726_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s, 176 struct comedi_insn *insn, unsigned int *data) 177{ 178 int hi, lo; 179 int n; 180 int chan = CR_CHAN(insn->chanspec); 181 182 for (n = 0; n < insn->n; n++) { 183 lo = data[n] & 0xff; 184 hi = (data[n] >> 8) & 0xf; 185 if (devpriv->bipolar[chan]) 186 hi ^= 0x8; 187 /* 188 * the programming info did not say which order 189 * to write bytes. switch the order of the next 190 * two lines if you get glitches. 191 */ 192 outb(hi, dev->iobase + PCL726_DAC0_HI + 2 * chan); 193 outb(lo, dev->iobase + PCL726_DAC0_LO + 2 * chan); 194 devpriv->ao_readback[chan] = data[n]; 195 } 196 197 return n; 198} 199 200static int pcl726_ao_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, 201 struct comedi_insn *insn, unsigned int *data) 202{ 203 int chan = CR_CHAN(insn->chanspec); 204 int n; 205 206 for (n = 0; n < insn->n; n++) { 207 data[n] = devpriv->ao_readback[chan]; 208 } 209 return n; 210} 211 212static int pcl726_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, 213 struct comedi_insn *insn, unsigned int *data) 214{ 215 if (insn->n != 2) 216 return -EINVAL; 217 218 data[1] = inb(dev->iobase + this_board->di_lo) | 219 (inb(dev->iobase + this_board->di_hi) << 8); 220 221 return 2; 222} 223 224static int pcl726_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, 225 struct comedi_insn *insn, unsigned int *data) 226{ 227 if (insn->n != 2) 228 return -EINVAL; 229 230 if (data[0]) { 231 s->state &= ~data[0]; 232 s->state |= data[0] & data[1]; 233 } 234 if (data[1] & 0x00ff) 235 outb(s->state & 0xff, dev->iobase + this_board->do_lo); 236 if (data[1] & 0xff00) 237 outb((s->state >> 8), dev->iobase + this_board->do_hi); 238 239 data[1] = s->state; 240 241 return 2; 242} 243 244static int pcl726_attach(struct comedi_device *dev, struct comedi_devconfig *it) 245{ 246 struct comedi_subdevice *s; 247 unsigned long iobase; 248 unsigned int iorange; 249 int ret, i; 250#ifdef ACL6126_IRQ 251 unsigned int irq; 252#endif 253 254 iobase = it->options[0]; 255 iorange = this_board->io_range; 256 printk("comedi%d: pcl726: board=%s, 0x%03lx ", dev->minor, 257 this_board->name, iobase); 258 if (!request_region(iobase, iorange, "pcl726")) { 259 printk("I/O port conflict\n"); 260 return -EIO; 261 } 262 263 dev->iobase = iobase; 264 265 dev->board_name = this_board->name; 266 267 ret = alloc_private(dev, sizeof(struct pcl726_private)); 268 if (ret < 0) 269 return -ENOMEM; 270 271 for (i = 0; i < 12; i++) { 272 devpriv->bipolar[i] = 0; 273 devpriv->rangelist[i] = &range_unknown; 274 } 275 276#ifdef ACL6126_IRQ 277 irq = 0; 278 if (boardtypes[board].IRQbits != 0) { /* board support IRQ */ 279 irq = it->options[1]; 280 devpriv->first_chan = 2; 281 if (irq) { /* we want to use IRQ */ 282 if (((1 << irq) & boardtypes[board].IRQbits) == 0) { 283 rt_printk 284 (", IRQ %d is out of allowed range, DISABLING IT", 285 irq); 286 irq = 0; /* Bad IRQ */ 287 } else { 288 if (comedi_request_irq(irq, interrupt_pcl818, 0, 289 "pcl726", dev)) { 290 rt_printk 291 (", unable to allocate IRQ %d, DISABLING IT", 292 irq); 293 irq = 0; /* Can't use IRQ */ 294 } else { 295 rt_printk(", irq=%d", irq); 296 } 297 } 298 } 299 } 300 301 dev->irq = irq; 302#endif 303 304 printk("\n"); 305 306 ret = alloc_subdevices(dev, 3); 307 if (ret < 0) 308 return ret; 309 310 s = dev->subdevices + 0; 311 /* ao */ 312 s->type = COMEDI_SUBD_AO; 313 s->subdev_flags = SDF_WRITABLE | SDF_GROUND; 314 s->n_chan = this_board->n_aochan; 315 s->maxdata = 0xfff; 316 s->len_chanlist = 1; 317 s->insn_write = pcl726_ao_insn; 318 s->insn_read = pcl726_ao_insn_read; 319 s->range_table_list = devpriv->rangelist; 320 for (i = 0; i < this_board->n_aochan; i++) { 321 int j; 322 323 j = it->options[2 + 1]; 324 if ((j < 0) || (j >= this_board->num_of_ranges)) { 325 printk("Invalid range for channel %d! Must be 0<=%d<%d\n", i, j, this_board->num_of_ranges - 1); 326 j = 0; 327 } 328 devpriv->rangelist[i] = this_board->range_type_list[j]; 329 if (devpriv->rangelist[i]->range[0].min == 330 -devpriv->rangelist[i]->range[0].max) 331 devpriv->bipolar[i] = 1; /* bipolar range */ 332 } 333 334 s = dev->subdevices + 1; 335 /* di */ 336 if (!this_board->have_dio) { 337 s->type = COMEDI_SUBD_UNUSED; 338 } else { 339 s->type = COMEDI_SUBD_DI; 340 s->subdev_flags = SDF_READABLE | SDF_GROUND; 341 s->n_chan = 16; 342 s->maxdata = 1; 343 s->len_chanlist = 1; 344 s->insn_bits = pcl726_di_insn_bits; 345 s->range_table = &range_digital; 346 } 347 348 s = dev->subdevices + 2; 349 /* do */ 350 if (!this_board->have_dio) { 351 s->type = COMEDI_SUBD_UNUSED; 352 } else { 353 s->type = COMEDI_SUBD_DO; 354 s->subdev_flags = SDF_WRITABLE | SDF_GROUND; 355 s->n_chan = 16; 356 s->maxdata = 1; 357 s->len_chanlist = 1; 358 s->insn_bits = pcl726_do_insn_bits; 359 s->range_table = &range_digital; 360 } 361 362 return 0; 363} 364 365static int pcl726_detach(struct comedi_device *dev) 366{ 367/* printk("comedi%d: pcl726: remove\n",dev->minor); */ 368 369#ifdef ACL6126_IRQ 370 if (dev->irq) { 371 comedi_free_irq(dev->irq, dev); 372 } 373#endif 374 375 if (dev->iobase) 376 release_region(dev->iobase, this_board->io_range); 377 378 return 0; 379} 380