adl_pci6208.c revision 8b6c56949ffa83dbc2a6e8fa3f98b10a19372207
1/* 2 comedi/drivers/adl_pci6208.c 3 4 Hardware driver for ADLink 6208 series cards: 5 card | voltage output | current output 6 -------------+-------------------+--------------- 7 PCI-6208V | 8 channels | - 8 PCI-6216V | 16 channels | - 9 PCI-6208A | 8 channels | 8 channels 10 11 COMEDI - Linux Control and Measurement Device Interface 12 Copyright (C) 2000 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/* 29Driver: adl_pci6208 30Description: ADLink PCI-6208A 31Devices: [ADLink] PCI-6208A (adl_pci6208) 32Author: nsyeow <nsyeow@pd.jaring.my> 33Updated: Fri, 30 Jan 2004 14:44:27 +0800 34Status: untested 35 36Configuration Options: 37 none 38 39References: 40 - ni_660x.c 41 - adl_pci9111.c copied the entire pci setup section 42 - adl_pci9118.c 43*/ 44/* 45 * These headers should be followed by a blank line, and any comments 46 * you wish to say about the driver. The comment area is the place 47 * to put any known bugs, limitations, unsupported features, supported 48 * command triggers, whether or not commands are supported on particular 49 * subdevices, etc. 50 * 51 * Somewhere in the comment should be information about configuration 52 * options that are used with comedi_config. 53 */ 54#include "../comedidev.h" 55 56/* Board descriptions */ 57struct pci6208_board { 58 const char *name; 59 unsigned short dev_id; /* `lspci` will show you this */ 60 int ao_chans; 61 /* int ao_bits; */ 62}; 63 64static const struct pci6208_board pci6208_boards[] = { 65 /*{ 66 .name = "pci6208v", 67 .dev_id = 0x6208, // not sure 68 .ao_chans = 8 69 // , .ao_bits = 16 70 }, 71 { 72 .name = "pci6216v", 73 .dev_id = 0x6208, // not sure 74 .ao_chans = 16 75 // , .ao_bits = 16 76 }, */ 77 { 78 .name = "pci6208a", 79 .dev_id = 0x6208, 80 .ao_chans = 8 81 /* , .ao_bits = 16 */ 82 } 83}; 84 85/* Will be initialized in pci6208_find device(). */ 86#define thisboard ((const struct pci6208_board *)dev->board_ptr) 87 88struct pci6208_private { 89 int data; 90 struct pci_dev *pci_dev; /* for a PCI device */ 91 unsigned int ao_readback[2]; /* Used for AO readback */ 92}; 93 94#define devpriv ((struct pci6208_private *)dev->private) 95 96static int pci6208_ao_winsn(struct comedi_device *dev, 97 struct comedi_subdevice *s, 98 struct comedi_insn *insn, unsigned int *data) 99{ 100 int i = 0, Data_Read; 101 unsigned short chan = CR_CHAN(insn->chanspec); 102 unsigned long invert = 1 << (16 - 1); 103 unsigned long out_value; 104 /* Writing a list of values to an AO channel is probably not 105 * very useful, but that's how the interface is defined. */ 106 for (i = 0; i < insn->n; i++) { 107 out_value = data[i] ^ invert; 108 /* a typical programming sequence */ 109 do { 110 Data_Read = (inw(dev->iobase) & 1); 111 } while (Data_Read); 112 outw(out_value, dev->iobase + (0x02 * chan)); 113 devpriv->ao_readback[chan] = out_value; 114 } 115 116 /* return the number of samples read/written */ 117 return i; 118} 119 120/* AO subdevices should have a read insn as well as a write insn. 121 * Usually this means copying a value stored in devpriv. */ 122static int pci6208_ao_rinsn(struct comedi_device *dev, 123 struct comedi_subdevice *s, 124 struct comedi_insn *insn, unsigned int *data) 125{ 126 int i; 127 int chan = CR_CHAN(insn->chanspec); 128 129 for (i = 0; i < insn->n; i++) 130 data[i] = devpriv->ao_readback[chan]; 131 132 return i; 133} 134 135/* DIO devices are slightly special. Although it is possible to 136 * implement the insn_read/insn_write interface, it is much more 137 * useful to applications if you implement the insn_bits interface. 138 * This allows packed reading/writing of the DIO channels. The 139 * comedi core can convert between insn_bits and insn_read/write */ 140/* static int pci6208_dio_insn_bits(struct comedi_device *dev, 141 * struct comedi_subdevice *s, */ 142/* struct comedi_insn *insn,unsigned int *data) */ 143/* { */ 144/* if(insn->n!=2)return -EINVAL; */ 145 146 /* The insn data is a mask in data[0] and the new data 147 * in data[1], each channel cooresponding to a bit. */ 148/* if(data[0]){ */ 149/* s->state &= ~data[0]; */ 150/* s->state |= data[0]&data[1]; */ 151 /* Write out the new digital output lines */ 152 /* outw(s->state,dev->iobase + SKEL_DIO); */ 153/* } */ 154 155 /* on return, data[1] contains the value of the digital 156 * input and output lines. */ 157 /* data[1]=inw(dev->iobase + SKEL_DIO); */ 158 /* or we could just return the software copy of the output values if 159 * it was a purely digital output subdevice */ 160 /* data[1]=s->state; */ 161 162/* return 2; */ 163/* } */ 164 165/* static int pci6208_dio_insn_config(struct comedi_device *dev, 166 * struct comedi_subdevice *s, */ 167/* struct comedi_insn *insn,unsigned int *data) */ 168/* { */ 169/* int chan=CR_CHAN(insn->chanspec); */ 170 171 /* The input or output configuration of each digital line is 172 * configured by a special insn_config instruction. chanspec 173 * contains the channel to be changed, and data[0] contains the 174 * value COMEDI_INPUT or COMEDI_OUTPUT. */ 175 176/* if(data[0]==COMEDI_OUTPUT){ */ 177/* s->io_bits |= 1<<chan; */ 178/* }else{ */ 179/* s->io_bits &= ~(1<<chan); */ 180/* } */ 181 /* outw(s->io_bits,dev->iobase + SKEL_DIO_CONFIG); */ 182 183/* return 1; */ 184/* } */ 185 186static int pci6208_find_device(struct comedi_device *dev, int bus, int slot) 187{ 188 struct pci_dev *pci_dev = NULL; 189 int i; 190 191 for_each_pci_dev(pci_dev) { 192 if (pci_dev->vendor == PCI_VENDOR_ID_ADLINK) { 193 for (i = 0; i < ARRAY_SIZE(pci6208_boards); i++) { 194 if (pci6208_boards[i].dev_id == 195 pci_dev->device) { 196 /* 197 * was a particular bus/slot requested? 198 */ 199 if ((bus != 0) || (slot != 0)) { 200 /* 201 * are we on the 202 * wrong bus/slot? 203 */ 204 if (pci_dev->bus->number 205 != bus || 206 PCI_SLOT(pci_dev->devfn) 207 != slot) { 208 continue; 209 } 210 } 211 dev->board_ptr = pci6208_boards + i; 212 goto found; 213 } 214 } 215 } 216 } 217 218 printk(KERN_ERR "comedi%d: no supported board found! " 219 "(req. bus/slot : %d/%d)\n", 220 dev->minor, bus, slot); 221 return -EIO; 222 223found: 224 printk("comedi%d: found %s (b:s:f=%d:%d:%d) , irq=%d\n", 225 dev->minor, 226 pci6208_boards[i].name, 227 pci_dev->bus->number, 228 PCI_SLOT(pci_dev->devfn), 229 PCI_FUNC(pci_dev->devfn), pci_dev->irq); 230 231 /* TODO: Warn about non-tested boards. */ 232 /* switch(board->device_id) */ 233 /* { */ 234 /* }; */ 235 236 devpriv->pci_dev = pci_dev; 237 238 return 0; 239} 240 241static int 242pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, 243 int dev_minor) 244{ 245 unsigned long io_base, io_range, lcr_io_base, lcr_io_range; 246 247 /* Enable PCI device and request regions */ 248 if (comedi_pci_enable(pci_dev, "adl_pci6208") < 0) { 249 printk(KERN_ERR "comedi%d: Failed to enable PCI device " 250 "and request regions\n", 251 dev_minor); 252 return -EIO; 253 } 254 /* Read local configuration register 255 * base address [PCI_BASE_ADDRESS #1]. 256 */ 257 lcr_io_base = pci_resource_start(pci_dev, 1); 258 lcr_io_range = pci_resource_len(pci_dev, 1); 259 260 printk(KERN_INFO "comedi%d: local config registers at address" 261 " 0x%4lx [0x%4lx]\n", 262 dev_minor, lcr_io_base, lcr_io_range); 263 264 /* Read PCI6208 register base address [PCI_BASE_ADDRESS #2]. */ 265 io_base = pci_resource_start(pci_dev, 2); 266 io_range = pci_resource_end(pci_dev, 2) - io_base + 1; 267 268 printk("comedi%d: 6208 registers at address 0x%4lx [0x%4lx]\n", 269 dev_minor, io_base, io_range); 270 271 *io_base_ptr = io_base; 272 /* devpriv->io_range = io_range; */ 273 /* devpriv->is_valid=0; */ 274 /* devpriv->lcr_io_base=lcr_io_base; */ 275 /* devpriv->lcr_io_range=lcr_io_range; */ 276 277 return 0; 278} 279 280static int pci6208_attach(struct comedi_device *dev, 281 struct comedi_devconfig *it) 282{ 283 struct comedi_subdevice *s; 284 int retval; 285 unsigned long io_base; 286 287 printk(KERN_INFO "comedi%d: pci6208: ", dev->minor); 288 289 retval = alloc_private(dev, sizeof(struct pci6208_private)); 290 if (retval < 0) 291 return retval; 292 293 retval = pci6208_find_device(dev, it->options[0], it->options[1]); 294 if (retval < 0) 295 return retval; 296 297 retval = pci6208_pci_setup(devpriv->pci_dev, &io_base, dev->minor); 298 if (retval < 0) 299 return retval; 300 301 dev->iobase = io_base; 302 dev->board_name = thisboard->name; 303 304 retval = comedi_alloc_subdevices(dev, 2); 305 if (retval) 306 return retval; 307 308 s = dev->subdevices + 0; 309 /* analog output subdevice */ 310 s->type = COMEDI_SUBD_AO; 311 s->subdev_flags = SDF_WRITABLE; /* anything else to add here?? */ 312 s->n_chan = thisboard->ao_chans; 313 s->maxdata = 0xffff; /* 16-bit DAC */ 314 s->range_table = &range_bipolar10; /* this needs to be checked. */ 315 s->insn_write = pci6208_ao_winsn; 316 s->insn_read = pci6208_ao_rinsn; 317 318 /* s=dev->subdevices+1; */ 319 /* digital i/o subdevice */ 320 /* s->type=COMEDI_SUBD_DIO; */ 321 /* s->subdev_flags=SDF_READABLE|SDF_WRITABLE; */ 322 /* s->n_chan=16; */ 323 /* s->maxdata=1; */ 324 /* s->range_table=&range_digital; */ 325 /* s->insn_bits = pci6208_dio_insn_bits; */ 326 /* s->insn_config = pci6208_dio_insn_config; */ 327 328 printk(KERN_INFO "attached\n"); 329 330 return 1; 331} 332 333static void pci6208_detach(struct comedi_device *dev) 334{ 335 if (devpriv && devpriv->pci_dev) { 336 if (dev->iobase) 337 comedi_pci_disable(devpriv->pci_dev); 338 pci_dev_put(devpriv->pci_dev); 339 } 340} 341 342static struct comedi_driver adl_pci6208_driver = { 343 .driver_name = "adl_pci6208", 344 .module = THIS_MODULE, 345 .attach = pci6208_attach, 346 .detach = pci6208_detach, 347}; 348 349static int __devinit adl_pci6208_pci_probe(struct pci_dev *dev, 350 const struct pci_device_id *ent) 351{ 352 return comedi_pci_auto_config(dev, &adl_pci6208_driver); 353} 354 355static void __devexit adl_pci6208_pci_remove(struct pci_dev *dev) 356{ 357 comedi_pci_auto_unconfig(dev); 358} 359 360/* This is used by modprobe to translate PCI IDs to drivers. Should 361 * only be used for PCI and ISA-PnP devices */ 362static DEFINE_PCI_DEVICE_TABLE(adl_pci6208_pci_table) = { 363 /* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */ 364 /* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */ 365 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x6208) }, 366 { 0 } 367}; 368MODULE_DEVICE_TABLE(pci, adl_pci6208_pci_table); 369 370static struct pci_driver adl_pci6208_pci_driver = { 371 .name = "adl_pci6208", 372 .id_table = adl_pci6208_pci_table, 373 .probe = adl_pci6208_pci_probe, 374 .remove = __devexit_p(adl_pci6208_pci_remove), 375}; 376module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver); 377 378MODULE_AUTHOR("Comedi http://www.comedi.org"); 379MODULE_DESCRIPTION("Comedi low-level driver"); 380MODULE_LICENSE("GPL"); 381