| 1 | /* |
| 2 | * comedi/drivers/ii_pci20kc.c |
| 3 | * Driver for Intelligent Instruments PCI-20001C carrier board |
| 4 | * and modules. |
| 5 | * |
| 6 | * Copyright (C) 2000 Markus Kempf <kempf@matsci.uni-sb.de> |
| 7 | * with suggestions from David Schleef |
| 8 | * 16.06.2000 |
| 9 | * |
| 10 | * Linux device driver for COMEDI |
| 11 | * Intelligent Instrumentation |
| 12 | * PCI-20001 C-2A Carrier Board |
| 13 | * PCI-20341 M-1A 16-Bit analog input module |
| 14 | * - differential |
| 15 | * - range (-5V - +5V) |
| 16 | * - 16 bit |
| 17 | * PCI-20006 M-2 16-Bit analog output module |
| 18 | * - ranges (-10V - +10V) (0V - +10V) (-5V - +5V) |
| 19 | * - 16 bit |
| 20 | * |
| 21 | * only ONE PCI-20341 module possible |
| 22 | * only ONE PCI-20006 module possible |
| 23 | * no extern trigger implemented |
| 24 | * |
| 25 | * NOT WORKING (but soon) only 4 on-board differential channels supported |
| 26 | * NOT WORKING (but soon) only ONE di-port and ONE do-port supported |
| 27 | * instead of 4 digital ports |
| 28 | * di-port == Port 0 |
| 29 | * do-port == Port 1 |
| 30 | * |
| 31 | * The state of this driver is only a starting point for a complete |
| 32 | * COMEDI-driver. The final driver should support all features of the |
| 33 | * carrier board and modules. |
| 34 | * |
| 35 | * The test configuration: |
| 36 | * |
| 37 | * kernel 2.2.14 with RTAI v1.2 and patch-2.2.14rthal2 |
| 38 | * COMEDI 0.7.45 |
| 39 | * COMEDILIB 0.7.9 |
| 40 | * |
| 41 | */ |
| 42 | /* |
| 43 | Driver: ii_pci20kc |
| 44 | Description: Intelligent Instruments PCI-20001C carrier board |
| 45 | Author: Markus Kempf <kempf@matsci.uni-sb.de> |
| 46 | Devices: [Intelligent Instrumentation] PCI-20001C (ii_pci20kc) |
| 47 | Status: works |
| 48 | |
| 49 | Supports the PCI-20001 C-2a Carrier board, and could probably support |
| 50 | the other carrier boards with small modifications. Modules supported |
| 51 | are: |
| 52 | PCI-20006 M-2 16-bit analog output module |
| 53 | PCI-20341 M-1A 16-bit analog input module |
| 54 | |
| 55 | Options: |
| 56 | 0 Board base address |
| 57 | 1 IRQ |
| 58 | 2 first option for module 1 |
| 59 | 3 second option for module 1 |
| 60 | 4 first option for module 2 |
| 61 | 5 second option for module 2 |
| 62 | 6 first option for module 3 |
| 63 | 7 second option for module 3 |
| 64 | |
| 65 | options for PCI-20006M: |
| 66 | first: Analog output channel 0 range configuration |
| 67 | 0 bipolar 10 (-10V -- +10V) |
| 68 | 1 unipolar 10 (0V -- +10V) |
| 69 | 2 bipolar 5 (-5V -- 5V) |
| 70 | second: Analog output channel 1 range configuration |
| 71 | |
| 72 | options for PCI-20341M: |
| 73 | first: Analog input gain configuration |
| 74 | 0 1 |
| 75 | 1 10 |
| 76 | 2 100 |
| 77 | 3 200 |
| 78 | */ |
| 79 | |
| 80 | /* XXX needs to use ioremap() for compatibility with 2.4 kernels. Should also |
| 81 | * check_mem_region() etc. - fmhess */ |
| 82 | |
| 83 | #include "../comedidev.h" |
| 84 | |
| 85 | #define PCI20000_ID 0x1d |
| 86 | #define PCI20341_ID 0x77 |
| 87 | #define PCI20006_ID 0xe3 |
| 88 | #define PCI20xxx_EMPTY_ID 0xff |
| 89 | |
| 90 | #define PCI20000_OFFSET 0x100 |
| 91 | #define PCI20000_MODULES 3 |
| 92 | |
| 93 | #define PCI20000_DIO_0 0x80 |
| 94 | #define PCI20000_DIO_1 0x81 |
| 95 | #define PCI20000_DIO_2 0xc0 |
| 96 | #define PCI20000_DIO_3 0xc1 |
| 97 | #define PCI20000_DIO_CONTROL_01 0x83 /* port 0, 1 control */ |
| 98 | #define PCI20000_DIO_CONTROL_23 0xc3 /* port 2, 3 control */ |
| 99 | #define PCI20000_DIO_BUFFER 0x82 /* buffer direction & enable */ |
| 100 | #define PCI20000_DIO_EOC 0xef /* even port, control output */ |
| 101 | #define PCI20000_DIO_OOC 0xfd /* odd port, control output */ |
| 102 | #define PCI20000_DIO_EIC 0x90 /* even port, control input */ |
| 103 | #define PCI20000_DIO_OIC 0x82 /* odd port, control input */ |
| 104 | #define DIO_CAND 0x12 /* and bit 1 & 4 of control */ |
| 105 | #define DIO_BE 0x01 /* buffer: port enable */ |
| 106 | #define DIO_BO 0x04 /* buffer: output */ |
| 107 | #define DIO_BI 0x05 /* buffer: input */ |
| 108 | #define DIO_PS_0 0x00 /* buffer: port shift 0 */ |
| 109 | #define DIO_PS_1 0x01 /* buffer: port shift 1 */ |
| 110 | #define DIO_PS_2 0x04 /* buffer: port shift 2 */ |
| 111 | #define DIO_PS_3 0x05 /* buffer: port shift 3 */ |
| 112 | |
| 113 | #define PCI20006_LCHAN0 0x0d |
| 114 | #define PCI20006_STROBE0 0x0b |
| 115 | #define PCI20006_LCHAN1 0x15 |
| 116 | #define PCI20006_STROBE1 0x13 |
| 117 | |
| 118 | #define PCI20341_INIT 0x04 |
| 119 | #define PCI20341_REPMODE 0x00 /* single shot mode */ |
| 120 | #define PCI20341_PACER 0x00 /* Hardware Pacer disabled */ |
| 121 | #define PCI20341_CHAN_NR 0x04 /* number of input channels */ |
| 122 | #define PCI20341_CONFIG_REG 0x10 |
| 123 | #define PCI20341_MOD_STATUS 0x01 |
| 124 | #define PCI20341_OPT_REG 0x11 |
| 125 | #define PCI20341_SET_TIME_REG 0x15 |
| 126 | #define PCI20341_LCHAN_ADDR_REG 0x13 |
| 127 | #define PCI20341_CHAN_LIST 0x80 |
| 128 | #define PCI20341_CC_RESET 0x1b |
| 129 | #define PCI20341_CHAN_RESET 0x19 |
| 130 | #define PCI20341_SOFT_PACER 0x04 |
| 131 | #define PCI20341_STATUS_REG 0x12 |
| 132 | #define PCI20341_LDATA 0x02 |
| 133 | #define PCI20341_DAISY_CHAIN 0x20 /* On-board inputs only */ |
| 134 | #define PCI20341_MUX 0x04 /* Enable on-board MUX */ |
| 135 | #define PCI20341_SCANLIST 0x80 /* Channel/Gain Scan List */ |
| 136 | |
| 137 | union pci20xxx_subdev_private { |
| 138 | void *iobase; |
| 139 | struct { |
| 140 | void *iobase; |
| 141 | const struct comedi_lrange *ao_range_list[2]; |
| 142 | /* range of channels of ao module */ |
| 143 | unsigned int last_data[2]; |
| 144 | } pci20006; |
| 145 | struct { |
| 146 | void *iobase; |
| 147 | int timebase; |
| 148 | int settling_time; |
| 149 | int ai_gain; |
| 150 | } pci20341; |
| 151 | }; |
| 152 | |
| 153 | struct pci20xxx_private { |
| 154 | |
| 155 | void *ioaddr; |
| 156 | union pci20xxx_subdev_private subdev_private[PCI20000_MODULES]; |
| 157 | }; |
| 158 | |
| 159 | #define devpriv ((struct pci20xxx_private *)dev->private) |
| 160 | #define CHAN (CR_CHAN(it->chanlist[0])) |
| 161 | |
| 162 | static int pci20xxx_attach(struct comedi_device *dev, |
| 163 | struct comedi_devconfig *it); |
| 164 | static int pci20xxx_detach(struct comedi_device *dev); |
| 165 | |
| 166 | static struct comedi_driver driver_pci20xxx = { |
| 167 | .driver_name = "ii_pci20kc", |
| 168 | .module = THIS_MODULE, |
| 169 | .attach = pci20xxx_attach, |
| 170 | .detach = pci20xxx_detach, |
| 171 | }; |
| 172 | |
| 173 | static int pci20006_init(struct comedi_device *dev, struct comedi_subdevice *s, |
| 174 | int opt0, int opt1); |
| 175 | static int pci20341_init(struct comedi_device *dev, struct comedi_subdevice *s, |
| 176 | int opt0, int opt1); |
| 177 | static int pci20xxx_dio_init(struct comedi_device *dev, |
| 178 | struct comedi_subdevice *s); |
| 179 | |
| 180 | /* |
| 181 | options[0] Board base address |
| 182 | options[1] IRQ |
| 183 | options[2] first option for module 1 |
| 184 | options[3] second option for module 1 |
| 185 | options[4] first option for module 2 |
| 186 | options[5] second option for module 2 |
| 187 | options[6] first option for module 3 |
| 188 | options[7] second option for module 3 |
| 189 | |
| 190 | options for PCI-20341M: |
| 191 | first Analog input gain configuration |
| 192 | 0 == 1 |
| 193 | 1 == 10 |
| 194 | 2 == 100 |
| 195 | 3 == 200 |
| 196 | |
| 197 | options for PCI-20006M: |
| 198 | first Analog output channel 0 range configuration |
| 199 | 0 == bipolar 10 (-10V -- +10V) |
| 200 | 1 == unipolar 10V (0V -- +10V) |
| 201 | 2 == bipolar 5V (-5V -- +5V) |
| 202 | second Analog output channel 1 range configuration |
| 203 | 0 == bipolar 10 (-10V -- +10V) |
| 204 | 1 == unipolar 10V (0V -- +10V) |
| 205 | 2 == bipolar 5V (-5V -- +5V) |
| 206 | */ |
| 207 | static int pci20xxx_attach(struct comedi_device *dev, |
| 208 | struct comedi_devconfig *it) |
| 209 | { |
| 210 | unsigned char i; |
| 211 | int ret; |
| 212 | int id; |
| 213 | struct comedi_subdevice *s; |
| 214 | union pci20xxx_subdev_private *sdp; |
| 215 | |
| 216 | ret = alloc_subdevices(dev, 1 + PCI20000_MODULES); |
| 217 | if (ret < 0) |
| 218 | return ret; |
| 219 | |
| 220 | ret = alloc_private(dev, sizeof(struct pci20xxx_private)); |
| 221 | if (ret < 0) |
| 222 | return ret; |
| 223 | |
| 224 | devpriv->ioaddr = (void *)(unsigned long)it->options[0]; |
| 225 | dev->board_name = "pci20kc"; |
| 226 | |
| 227 | /* Check PCI-20001 C-2A Carrier Board ID */ |
| 228 | if ((readb(devpriv->ioaddr) & PCI20000_ID) != PCI20000_ID) { |
| 229 | printk(KERN_WARNING "comedi%d: ii_pci20kc PCI-20001" |
| 230 | " C-2A Carrier Board at base=0x%p not found !\n", |
| 231 | dev->minor, devpriv->ioaddr); |
| 232 | return -EINVAL; |
| 233 | } |
| 234 | printk(KERN_INFO "comedi%d: ii_pci20kc: PCI-20001 C-2A at base=0x%p\n", |
| 235 | dev->minor, devpriv->ioaddr); |
| 236 | |
| 237 | for (i = 0; i < PCI20000_MODULES; i++) { |
| 238 | s = dev->subdevices + i; |
| 239 | id = readb(devpriv->ioaddr + (i + 1) * PCI20000_OFFSET); |
| 240 | s->private = devpriv->subdev_private + i; |
| 241 | sdp = s->private; |
| 242 | switch (id) { |
| 243 | case PCI20006_ID: |
| 244 | sdp->pci20006.iobase = |
| 245 | devpriv->ioaddr + (i + 1) * PCI20000_OFFSET; |
| 246 | pci20006_init(dev, s, it->options[2 * i + 2], |
| 247 | it->options[2 * i + 3]); |
| 248 | printk(KERN_INFO "comedi%d: " |
| 249 | "ii_pci20kc PCI-20006 module in slot %d \n", |
| 250 | dev->minor, i + 1); |
| 251 | break; |
| 252 | case PCI20341_ID: |
| 253 | sdp->pci20341.iobase = |
| 254 | devpriv->ioaddr + (i + 1) * PCI20000_OFFSET; |
| 255 | pci20341_init(dev, s, it->options[2 * i + 2], |
| 256 | it->options[2 * i + 3]); |
| 257 | printk(KERN_INFO "comedi%d: " |
| 258 | "ii_pci20kc PCI-20341 module in slot %d \n", |
| 259 | dev->minor, i + 1); |
| 260 | break; |
| 261 | default: |
| 262 | printk(KERN_WARNING "ii_pci20kc: unknown module " |
| 263 | "code 0x%02x in slot %d: module disabled\n", |
| 264 | id, i); /* XXX this looks like a bug! i + 1 ?? */ |
| 265 | /* fall through */ |
| 266 | case PCI20xxx_EMPTY_ID: |
| 267 | s->type = COMEDI_SUBD_UNUSED; |
| 268 | break; |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | /* initialize struct pci20xxx_private */ |
| 273 | pci20xxx_dio_init(dev, dev->subdevices + PCI20000_MODULES); |
| 274 | |
| 275 | return 1; |
| 276 | } |
| 277 | |
| 278 | static int pci20xxx_detach(struct comedi_device *dev) |
| 279 | { |
| 280 | printk(KERN_INFO "comedi%d: pci20xxx: remove\n", dev->minor); |
| 281 | |
| 282 | return 0; |
| 283 | } |
| 284 | |
| 285 | /* pci20006m */ |
| 286 | |
| 287 | static int pci20006_insn_read(struct comedi_device *dev, |
| 288 | struct comedi_subdevice *s, |
| 289 | struct comedi_insn *insn, unsigned int *data); |
| 290 | static int pci20006_insn_write(struct comedi_device *dev, |
| 291 | struct comedi_subdevice *s, |
| 292 | struct comedi_insn *insn, unsigned int *data); |
| 293 | |
| 294 | static const struct comedi_lrange *pci20006_range_list[] = { |
| 295 | &range_bipolar10, |
| 296 | &range_unipolar10, |
| 297 | &range_bipolar5, |
| 298 | }; |
| 299 | |
| 300 | static int pci20006_init(struct comedi_device *dev, struct comedi_subdevice *s, |
| 301 | int opt0, int opt1) |
| 302 | { |
| 303 | union pci20xxx_subdev_private *sdp = s->private; |
| 304 | |
| 305 | if (opt0 < 0 || opt0 > 2) |
| 306 | opt0 = 0; |
| 307 | if (opt1 < 0 || opt1 > 2) |
| 308 | opt1 = 0; |
| 309 | |
| 310 | sdp->pci20006.ao_range_list[0] = pci20006_range_list[opt0]; |
| 311 | sdp->pci20006.ao_range_list[1] = pci20006_range_list[opt1]; |
| 312 | |
| 313 | /* ao subdevice */ |
| 314 | s->type = COMEDI_SUBD_AO; |
| 315 | s->subdev_flags = SDF_WRITABLE; |
| 316 | s->n_chan = 2; |
| 317 | s->len_chanlist = 2; |
| 318 | s->insn_read = pci20006_insn_read; |
| 319 | s->insn_write = pci20006_insn_write; |
| 320 | s->maxdata = 0xffff; |
| 321 | s->range_table_list = sdp->pci20006.ao_range_list; |
| 322 | return 0; |
| 323 | } |
| 324 | |
| 325 | static int pci20006_insn_read(struct comedi_device *dev, |
| 326 | struct comedi_subdevice *s, |
| 327 | struct comedi_insn *insn, unsigned int *data) |
| 328 | { |
| 329 | union pci20xxx_subdev_private *sdp = s->private; |
| 330 | |
| 331 | data[0] = sdp->pci20006.last_data[CR_CHAN(insn->chanspec)]; |
| 332 | |
| 333 | return 1; |
| 334 | } |
| 335 | |
| 336 | static int pci20006_insn_write(struct comedi_device *dev, |
| 337 | struct comedi_subdevice *s, |
| 338 | struct comedi_insn *insn, unsigned int *data) |
| 339 | { |
| 340 | union pci20xxx_subdev_private *sdp = s->private; |
| 341 | int hi, lo; |
| 342 | unsigned int boarddata; |
| 343 | |
| 344 | sdp->pci20006.last_data[CR_CHAN(insn->chanspec)] = data[0]; |
| 345 | boarddata = (((unsigned int)data[0] + 0x8000) & 0xffff); |
| 346 | /* comedi-data -> board-data */ |
| 347 | lo = (boarddata & 0xff); |
| 348 | hi = ((boarddata >> 8) & 0xff); |
| 349 | |
| 350 | switch (CR_CHAN(insn->chanspec)) { |
| 351 | case 0: |
| 352 | writeb(lo, sdp->iobase + PCI20006_LCHAN0); |
| 353 | writeb(hi, sdp->iobase + PCI20006_LCHAN0 + 1); |
| 354 | writeb(0x00, sdp->iobase + PCI20006_STROBE0); |
| 355 | break; |
| 356 | case 1: |
| 357 | writeb(lo, sdp->iobase + PCI20006_LCHAN1); |
| 358 | writeb(hi, sdp->iobase + PCI20006_LCHAN1 + 1); |
| 359 | writeb(0x00, sdp->iobase + PCI20006_STROBE1); |
| 360 | break; |
| 361 | default: |
| 362 | printk(KERN_WARNING |
| 363 | " comedi%d: pci20xxx: ao channel Error!\n", dev->minor); |
| 364 | return -EINVAL; |
| 365 | } |
| 366 | |
| 367 | return 1; |
| 368 | } |
| 369 | |
| 370 | /* PCI20341M */ |
| 371 | |
| 372 | static int pci20341_insn_read(struct comedi_device *dev, |
| 373 | struct comedi_subdevice *s, |
| 374 | struct comedi_insn *insn, unsigned int *data); |
| 375 | |
| 376 | static const int pci20341_timebase[] = { 0x00, 0x00, 0x00, 0x04 }; |
| 377 | static const int pci20341_settling_time[] = { 0x58, 0x58, 0x93, 0x99 }; |
| 378 | |
| 379 | static const struct comedi_lrange range_bipolar0_5 = { 1, {BIP_RANGE(0.5)} }; |
| 380 | static const struct comedi_lrange range_bipolar0_05 = { 1, {BIP_RANGE(0.05)} }; |
| 381 | static const struct comedi_lrange range_bipolar0_025 = { 1, {BIP_RANGE(0.025)} }; |
| 382 | |
| 383 | static const struct comedi_lrange *const pci20341_ranges[] = { |
| 384 | &range_bipolar5, |
| 385 | &range_bipolar0_5, |
| 386 | &range_bipolar0_05, |
| 387 | &range_bipolar0_025, |
| 388 | }; |
| 389 | |
| 390 | static int pci20341_init(struct comedi_device *dev, struct comedi_subdevice *s, |
| 391 | int opt0, int opt1) |
| 392 | { |
| 393 | union pci20xxx_subdev_private *sdp = s->private; |
| 394 | int option; |
| 395 | |
| 396 | /* options handling */ |
| 397 | if (opt0 < 0 || opt0 > 3) |
| 398 | opt0 = 0; |
| 399 | sdp->pci20341.timebase = pci20341_timebase[opt0]; |
| 400 | sdp->pci20341.settling_time = pci20341_settling_time[opt0]; |
| 401 | |
| 402 | /* ai subdevice */ |
| 403 | s->type = COMEDI_SUBD_AI; |
| 404 | s->subdev_flags = SDF_READABLE; |
| 405 | s->n_chan = PCI20341_CHAN_NR; |
| 406 | s->len_chanlist = PCI20341_SCANLIST; |
| 407 | s->insn_read = pci20341_insn_read; |
| 408 | s->maxdata = 0xffff; |
| 409 | s->range_table = pci20341_ranges[opt0]; |
| 410 | |
| 411 | option = sdp->pci20341.timebase | PCI20341_REPMODE; /* depends on gain, trigger, repetition mode */ |
| 412 | |
| 413 | writeb(PCI20341_INIT, sdp->iobase + PCI20341_CONFIG_REG); /* initialize Module */ |
| 414 | writeb(PCI20341_PACER, sdp->iobase + PCI20341_MOD_STATUS); /* set Pacer */ |
| 415 | writeb(option, sdp->iobase + PCI20341_OPT_REG); /* option register */ |
| 416 | writeb(sdp->pci20341.settling_time, sdp->iobase + PCI20341_SET_TIME_REG); /* settling time counter */ |
| 417 | /* trigger not implemented */ |
| 418 | return 0; |
| 419 | } |
| 420 | |
| 421 | static int pci20341_insn_read(struct comedi_device *dev, |
| 422 | struct comedi_subdevice *s, |
| 423 | struct comedi_insn *insn, unsigned int *data) |
| 424 | { |
| 425 | union pci20xxx_subdev_private *sdp = s->private; |
| 426 | unsigned int i = 0, j = 0; |
| 427 | int lo, hi; |
| 428 | unsigned char eoc; /* end of conversion */ |
| 429 | unsigned int clb; /* channel list byte */ |
| 430 | unsigned int boarddata; |
| 431 | |
| 432 | writeb(1, sdp->iobase + PCI20341_LCHAN_ADDR_REG); /* write number of input channels */ |
| 433 | clb = PCI20341_DAISY_CHAIN | PCI20341_MUX | (sdp->pci20341.ai_gain << 3) |
| 434 | | CR_CHAN(insn->chanspec); |
| 435 | writeb(clb, sdp->iobase + PCI20341_CHAN_LIST); |
| 436 | writeb(0x00, sdp->iobase + PCI20341_CC_RESET); /* reset settling time counter and trigger delay counter */ |
| 437 | writeb(0x00, sdp->iobase + PCI20341_CHAN_RESET); |
| 438 | |
| 439 | /* generate Pacer */ |
| 440 | |
| 441 | for (i = 0; i < insn->n; i++) { |
| 442 | /* data polling isn't the niciest way to get the data, I know, |
| 443 | * but there are only 6 cycles (mean) and it is easier than |
| 444 | * the whole interrupt stuff |
| 445 | */ |
| 446 | j = 0; |
| 447 | readb(sdp->iobase + PCI20341_SOFT_PACER); /* generate Pacer */ |
| 448 | eoc = readb(sdp->iobase + PCI20341_STATUS_REG); |
| 449 | while ((eoc < 0x80) && j < 100) { /* poll Interrupt Flag */ |
| 450 | j++; |
| 451 | eoc = readb(sdp->iobase + PCI20341_STATUS_REG); |
| 452 | } |
| 453 | if (j >= 100) { |
| 454 | printk(KERN_WARNING |
| 455 | "comedi%d: pci20xxx: " |
| 456 | "AI interrupt channel %i polling exit !\n", |
| 457 | dev->minor, i); |
| 458 | return -EINVAL; |
| 459 | } |
| 460 | lo = readb(sdp->iobase + PCI20341_LDATA); |
| 461 | hi = readb(sdp->iobase + PCI20341_LDATA + 1); |
| 462 | boarddata = lo + 0x100 * hi; |
| 463 | data[i] = (short)((boarddata + 0x8000) & 0xffff); /* board-data -> comedi-data */ |
| 464 | } |
| 465 | |
| 466 | return i; |
| 467 | } |
| 468 | |
| 469 | /* native DIO */ |
| 470 | |
| 471 | static void pci20xxx_dio_config(struct comedi_device *dev, |
| 472 | struct comedi_subdevice *s); |
| 473 | static int pci20xxx_dio_insn_bits(struct comedi_device *dev, |
| 474 | struct comedi_subdevice *s, |
| 475 | struct comedi_insn *insn, unsigned int *data); |
| 476 | static int pci20xxx_dio_insn_config(struct comedi_device *dev, |
| 477 | struct comedi_subdevice *s, |
| 478 | struct comedi_insn *insn, |
| 479 | unsigned int *data); |
| 480 | |
| 481 | /* initialize struct pci20xxx_private */ |
| 482 | static int pci20xxx_dio_init(struct comedi_device *dev, |
| 483 | struct comedi_subdevice *s) |
| 484 | { |
| 485 | |
| 486 | s->type = COMEDI_SUBD_DIO; |
| 487 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE; |
| 488 | s->n_chan = 32; |
| 489 | s->insn_bits = pci20xxx_dio_insn_bits; |
| 490 | s->insn_config = pci20xxx_dio_insn_config; |
| 491 | s->maxdata = 1; |
| 492 | s->len_chanlist = 32; |
| 493 | s->range_table = &range_digital; |
| 494 | s->io_bits = 0; |
| 495 | |
| 496 | /* digital I/O lines default to input on board reset. */ |
| 497 | pci20xxx_dio_config(dev, s); |
| 498 | |
| 499 | return 0; |
| 500 | } |
| 501 | |
| 502 | static int pci20xxx_dio_insn_config(struct comedi_device *dev, |
| 503 | struct comedi_subdevice *s, |
| 504 | struct comedi_insn *insn, |
| 505 | unsigned int *data) |
| 506 | { |
| 507 | int mask, bits; |
| 508 | |
| 509 | mask = 1 << CR_CHAN(insn->chanspec); |
| 510 | if (mask & 0x000000ff) |
| 511 | bits = 0x000000ff; |
| 512 | else if (mask & 0x0000ff00) |
| 513 | bits = 0x0000ff00; |
| 514 | else if (mask & 0x00ff0000) |
| 515 | bits = 0x00ff0000; |
| 516 | else |
| 517 | bits = 0xff000000; |
| 518 | if (data[0]) |
| 519 | s->io_bits |= bits; |
| 520 | else |
| 521 | s->io_bits &= ~bits; |
| 522 | pci20xxx_dio_config(dev, s); |
| 523 | |
| 524 | return 1; |
| 525 | } |
| 526 | |
| 527 | static int pci20xxx_dio_insn_bits(struct comedi_device *dev, |
| 528 | struct comedi_subdevice *s, |
| 529 | struct comedi_insn *insn, unsigned int *data) |
| 530 | { |
| 531 | unsigned int mask = data[0]; |
| 532 | |
| 533 | s->state &= ~mask; |
| 534 | s->state |= (mask & data[1]); |
| 535 | |
| 536 | mask &= s->io_bits; |
| 537 | if (mask & 0x000000ff) |
| 538 | writeb((s->state >> 0) & 0xff, |
| 539 | devpriv->ioaddr + PCI20000_DIO_0); |
| 540 | if (mask & 0x0000ff00) |
| 541 | writeb((s->state >> 8) & 0xff, |
| 542 | devpriv->ioaddr + PCI20000_DIO_1); |
| 543 | if (mask & 0x00ff0000) |
| 544 | writeb((s->state >> 16) & 0xff, |
| 545 | devpriv->ioaddr + PCI20000_DIO_2); |
| 546 | if (mask & 0xff000000) |
| 547 | writeb((s->state >> 24) & 0xff, |
| 548 | devpriv->ioaddr + PCI20000_DIO_3); |
| 549 | |
| 550 | data[1] = readb(devpriv->ioaddr + PCI20000_DIO_0); |
| 551 | data[1] |= readb(devpriv->ioaddr + PCI20000_DIO_1) << 8; |
| 552 | data[1] |= readb(devpriv->ioaddr + PCI20000_DIO_2) << 16; |
| 553 | data[1] |= readb(devpriv->ioaddr + PCI20000_DIO_3) << 24; |
| 554 | |
| 555 | return 2; |
| 556 | } |
| 557 | |
| 558 | static void pci20xxx_dio_config(struct comedi_device *dev, |
| 559 | struct comedi_subdevice *s) |
| 560 | { |
| 561 | unsigned char control_01; |
| 562 | unsigned char control_23; |
| 563 | unsigned char buffer; |
| 564 | |
| 565 | control_01 = readb(devpriv->ioaddr + PCI20000_DIO_CONTROL_01); |
| 566 | control_23 = readb(devpriv->ioaddr + PCI20000_DIO_CONTROL_23); |
| 567 | buffer = readb(devpriv->ioaddr + PCI20000_DIO_BUFFER); |
| 568 | |
| 569 | if (s->io_bits & 0x000000ff) { |
| 570 | /* output port 0 */ |
| 571 | control_01 &= PCI20000_DIO_EOC; |
| 572 | buffer = (buffer & (~(DIO_BE << DIO_PS_0))) | (DIO_BO << |
| 573 | DIO_PS_0); |
| 574 | } else { |
| 575 | /* input port 0 */ |
| 576 | control_01 = (control_01 & DIO_CAND) | PCI20000_DIO_EIC; |
| 577 | buffer = (buffer & (~(DIO_BI << DIO_PS_0))); |
| 578 | } |
| 579 | if (s->io_bits & 0x0000ff00) { |
| 580 | /* output port 1 */ |
| 581 | control_01 &= PCI20000_DIO_OOC; |
| 582 | buffer = (buffer & (~(DIO_BE << DIO_PS_1))) | (DIO_BO << |
| 583 | DIO_PS_1); |
| 584 | } else { |
| 585 | /* input port 1 */ |
| 586 | control_01 = (control_01 & DIO_CAND) | PCI20000_DIO_OIC; |
| 587 | buffer = (buffer & (~(DIO_BI << DIO_PS_1))); |
| 588 | } |
| 589 | if (s->io_bits & 0x00ff0000) { |
| 590 | /* output port 2 */ |
| 591 | control_23 &= PCI20000_DIO_EOC; |
| 592 | buffer = (buffer & (~(DIO_BE << DIO_PS_2))) | (DIO_BO << |
| 593 | DIO_PS_2); |
| 594 | } else { |
| 595 | /* input port 2 */ |
| 596 | control_23 = (control_23 & DIO_CAND) | PCI20000_DIO_EIC; |
| 597 | buffer = (buffer & (~(DIO_BI << DIO_PS_2))); |
| 598 | } |
| 599 | if (s->io_bits & 0xff000000) { |
| 600 | /* output port 3 */ |
| 601 | control_23 &= PCI20000_DIO_OOC; |
| 602 | buffer = (buffer & (~(DIO_BE << DIO_PS_3))) | (DIO_BO << |
| 603 | DIO_PS_3); |
| 604 | } else { |
| 605 | /* input port 3 */ |
| 606 | control_23 = (control_23 & DIO_CAND) | PCI20000_DIO_OIC; |
| 607 | buffer = (buffer & (~(DIO_BI << DIO_PS_3))); |
| 608 | } |
| 609 | writeb(control_01, devpriv->ioaddr + PCI20000_DIO_CONTROL_01); |
| 610 | writeb(control_23, devpriv->ioaddr + PCI20000_DIO_CONTROL_23); |
| 611 | writeb(buffer, devpriv->ioaddr + PCI20000_DIO_BUFFER); |
| 612 | } |
| 613 | |
| 614 | #if 0 |
| 615 | static void pci20xxx_do(struct comedi_device *dev, struct comedi_subdevice *s) |
| 616 | { |
| 617 | /* XXX if the channel is configured for input, does this |
| 618 | do bad things? */ |
| 619 | /* XXX it would be a good idea to only update the registers |
| 620 | that _need_ to be updated. This requires changes to |
| 621 | comedi, however. */ |
| 622 | writeb((s->state >> 0) & 0xff, devpriv->ioaddr + PCI20000_DIO_0); |
| 623 | writeb((s->state >> 8) & 0xff, devpriv->ioaddr + PCI20000_DIO_1); |
| 624 | writeb((s->state >> 16) & 0xff, devpriv->ioaddr + PCI20000_DIO_2); |
| 625 | writeb((s->state >> 24) & 0xff, devpriv->ioaddr + PCI20000_DIO_3); |
| 626 | } |
| 627 | |
| 628 | static unsigned int pci20xxx_di(struct comedi_device *dev, |
| 629 | struct comedi_subdevice *s) |
| 630 | { |
| 631 | /* XXX same note as above */ |
| 632 | unsigned int bits; |
| 633 | |
| 634 | bits = readb(devpriv->ioaddr + PCI20000_DIO_0); |
| 635 | bits |= readb(devpriv->ioaddr + PCI20000_DIO_1) << 8; |
| 636 | bits |= readb(devpriv->ioaddr + PCI20000_DIO_2) << 16; |
| 637 | bits |= readb(devpriv->ioaddr + PCI20000_DIO_3) << 24; |
| 638 | |
| 639 | return bits; |
| 640 | } |
| 641 | #endif |
| 642 | |
| 643 | static int __init driver_pci20xxx_init_module(void) |
| 644 | { |
| 645 | return comedi_driver_register(&driver_pci20xxx); |
| 646 | } |
| 647 | |
| 648 | static void __exit driver_pci20xxx_cleanup_module(void) |
| 649 | { |
| 650 | comedi_driver_unregister(&driver_pci20xxx); |
| 651 | } |
| 652 | |
| 653 | module_init(driver_pci20xxx_init_module); |
| 654 | module_exit(driver_pci20xxx_cleanup_module); |
| 655 | |
| 656 | MODULE_AUTHOR("Comedi http://www.comedi.org"); |
| 657 | MODULE_DESCRIPTION("Comedi low-level driver"); |
| 658 | MODULE_LICENSE("GPL"); |