adl_pci6208.c revision db7c275d9ffd2c58648b1bf023ab62cf993ddfac
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/* 57 * PCI-6208/6216-GL register map 58 */ 59#define PCI6208_AO_CONTROL(x) (0x00 + (2 * (x))) 60#define PCI6208_AO_STATUS 0x00 61#define PCI6208_AO_STATUS_DATA_SEND (1 << 0) 62#define PCI6208_DIO 0x40 63#define PCI6208_DIO_DO_MASK (0x0f) 64#define PCI6208_DIO_DO_SHIFT (0) 65#define PCI6208_DIO_DI_MASK (0xf0) 66#define PCI6208_DIO_DI_SHIFT (4) 67 68/* Board descriptions */ 69struct pci6208_board { 70 const char *name; 71 unsigned short dev_id; /* `lspci` will show you this */ 72 int ao_chans; 73}; 74 75static const struct pci6208_board pci6208_boards[] = { 76 /*{ 77 .name = "pci6208v", 78 .dev_id = 0x6208, // not sure 79 .ao_chans = 8 80 }, 81 { 82 .name = "pci6216v", 83 .dev_id = 0x6208, // not sure 84 .ao_chans = 16 85 }, */ 86 { 87 .name = "pci6208a", 88 .dev_id = 0x6208, 89 .ao_chans = 8 90 } 91}; 92 93struct pci6208_private { 94 int data; 95 struct pci_dev *pci_dev; /* for a PCI device */ 96 unsigned int ao_readback[2]; /* Used for AO readback */ 97}; 98 99static int pci6208_ao_winsn(struct comedi_device *dev, 100 struct comedi_subdevice *s, 101 struct comedi_insn *insn, unsigned int *data) 102{ 103 struct pci6208_private *devpriv = dev->private; 104 int i = 0, Data_Read; 105 unsigned short chan = CR_CHAN(insn->chanspec); 106 unsigned long invert = 1 << (16 - 1); 107 unsigned long out_value; 108 /* Writing a list of values to an AO channel is probably not 109 * very useful, but that's how the interface is defined. */ 110 for (i = 0; i < insn->n; i++) { 111 out_value = data[i] ^ invert; 112 /* a typical programming sequence */ 113 do { 114 Data_Read = (inw(dev->iobase) & 1); 115 } while (Data_Read); 116 outw(out_value, dev->iobase + (0x02 * chan)); 117 devpriv->ao_readback[chan] = out_value; 118 } 119 120 /* return the number of samples read/written */ 121 return i; 122} 123 124/* AO subdevices should have a read insn as well as a write insn. 125 * Usually this means copying a value stored in devpriv. */ 126static int pci6208_ao_rinsn(struct comedi_device *dev, 127 struct comedi_subdevice *s, 128 struct comedi_insn *insn, unsigned int *data) 129{ 130 struct pci6208_private *devpriv = dev->private; 131 int i; 132 int chan = CR_CHAN(insn->chanspec); 133 134 for (i = 0; i < insn->n; i++) 135 data[i] = devpriv->ao_readback[chan]; 136 137 return i; 138} 139 140/* DIO devices are slightly special. Although it is possible to 141 * implement the insn_read/insn_write interface, it is much more 142 * useful to applications if you implement the insn_bits interface. 143 * This allows packed reading/writing of the DIO channels. The 144 * comedi core can convert between insn_bits and insn_read/write */ 145/* static int pci6208_dio_insn_bits(struct comedi_device *dev, 146 * struct comedi_subdevice *s, */ 147/* struct comedi_insn *insn,unsigned int *data) */ 148/* { */ 149 /* The insn data is a mask in data[0] and the new data 150 * in data[1], each channel cooresponding to a bit. */ 151/* if(data[0]){ */ 152/* s->state &= ~data[0]; */ 153/* s->state |= data[0]&data[1]; */ 154 /* Write out the new digital output lines */ 155 /* outw(s->state,dev->iobase + SKEL_DIO); */ 156/* } */ 157 158 /* on return, data[1] contains the value of the digital 159 * input and output lines. */ 160 /* data[1]=inw(dev->iobase + SKEL_DIO); */ 161 /* or we could just return the software copy of the output values if 162 * it was a purely digital output subdevice */ 163 /* data[1]=s->state; */ 164 165/* return insn->n; */ 166/* } */ 167 168/* static int pci6208_dio_insn_config(struct comedi_device *dev, 169 * struct comedi_subdevice *s, */ 170/* struct comedi_insn *insn,unsigned int *data) */ 171/* { */ 172/* int chan=CR_CHAN(insn->chanspec); */ 173 174 /* The input or output configuration of each digital line is 175 * configured by a special insn_config instruction. chanspec 176 * contains the channel to be changed, and data[0] contains the 177 * value COMEDI_INPUT or COMEDI_OUTPUT. */ 178 179/* if(data[0]==COMEDI_OUTPUT){ */ 180/* s->io_bits |= 1<<chan; */ 181/* }else{ */ 182/* s->io_bits &= ~(1<<chan); */ 183/* } */ 184 /* outw(s->io_bits,dev->iobase + SKEL_DIO_CONFIG); */ 185 186/* return 1; */ 187/* } */ 188 189static struct pci_dev *pci6208_find_device(struct comedi_device *dev, 190 struct comedi_devconfig *it) 191{ 192 const struct pci6208_board *thisboard; 193 struct pci_dev *pci_dev = NULL; 194 int bus = it->options[0]; 195 int slot = it->options[1]; 196 int i; 197 198 for_each_pci_dev(pci_dev) { 199 if (pci_dev->vendor != PCI_VENDOR_ID_ADLINK) 200 continue; 201 for (i = 0; i < ARRAY_SIZE(pci6208_boards); i++) { 202 thisboard = &pci6208_boards[i]; 203 if (thisboard->dev_id != pci_dev->device) 204 continue; 205 /* was a particular bus/slot requested? */ 206 if (bus || slot) { 207 /* are we on the wrong bus/slot? */ 208 if (pci_dev->bus->number != bus || 209 PCI_SLOT(pci_dev->devfn) != slot) 210 continue; 211 } 212 dev_dbg(dev->class_dev, 213 "Found %s on bus %d, slot, %d, irq=%d\n", 214 thisboard->name, 215 pci_dev->bus->number, 216 PCI_SLOT(pci_dev->devfn), 217 pci_dev->irq); 218 dev->board_ptr = thisboard; 219 return pci_dev; 220 } 221 } 222 dev_err(dev->class_dev, 223 "No supported board found! (req. bus %d, slot %d)\n", 224 bus, slot); 225 return NULL; 226} 227 228static int pci6208_attach(struct comedi_device *dev, 229 struct comedi_devconfig *it) 230{ 231 const struct pci6208_board *thisboard; 232 struct pci6208_private *devpriv; 233 struct comedi_subdevice *s; 234 int retval; 235 236 printk(KERN_INFO "comedi%d: pci6208: ", dev->minor); 237 238 retval = alloc_private(dev, sizeof(*devpriv)); 239 if (retval < 0) 240 return retval; 241 devpriv = dev->private; 242 243 devpriv->pci_dev = pci6208_find_device(dev, it); 244 if (!devpriv->pci_dev) 245 return -EIO; 246 thisboard = comedi_board(dev); 247 248 if (comedi_pci_enable(devpriv->pci_dev, "adl_pci6208") < 0) { 249 dev_err(dev->class_dev, 250 "Failed to enable PCI device and request regions\n"); 251 return -EIO; 252 } 253 254 dev->iobase = pci_resource_start(devpriv->pci_dev, 2); 255 256 dev->board_name = thisboard->name; 257 258 retval = comedi_alloc_subdevices(dev, 2); 259 if (retval) 260 return retval; 261 262 s = dev->subdevices + 0; 263 /* analog output subdevice */ 264 s->type = COMEDI_SUBD_AO; 265 s->subdev_flags = SDF_WRITABLE; /* anything else to add here?? */ 266 s->n_chan = thisboard->ao_chans; 267 s->maxdata = 0xffff; /* 16-bit DAC */ 268 s->range_table = &range_bipolar10; /* this needs to be checked. */ 269 s->insn_write = pci6208_ao_winsn; 270 s->insn_read = pci6208_ao_rinsn; 271 272 /* s=dev->subdevices+1; */ 273 /* digital i/o subdevice */ 274 /* s->type=COMEDI_SUBD_DIO; */ 275 /* s->subdev_flags=SDF_READABLE|SDF_WRITABLE; */ 276 /* s->n_chan=16; */ 277 /* s->maxdata=1; */ 278 /* s->range_table=&range_digital; */ 279 /* s->insn_bits = pci6208_dio_insn_bits; */ 280 /* s->insn_config = pci6208_dio_insn_config; */ 281 282 printk(KERN_INFO "attached\n"); 283 284 return 1; 285} 286 287static void pci6208_detach(struct comedi_device *dev) 288{ 289 struct pci6208_private *devpriv = dev->private; 290 291 if (devpriv && devpriv->pci_dev) { 292 if (dev->iobase) 293 comedi_pci_disable(devpriv->pci_dev); 294 pci_dev_put(devpriv->pci_dev); 295 } 296} 297 298static struct comedi_driver adl_pci6208_driver = { 299 .driver_name = "adl_pci6208", 300 .module = THIS_MODULE, 301 .attach = pci6208_attach, 302 .detach = pci6208_detach, 303}; 304 305static int __devinit adl_pci6208_pci_probe(struct pci_dev *dev, 306 const struct pci_device_id *ent) 307{ 308 return comedi_pci_auto_config(dev, &adl_pci6208_driver); 309} 310 311static void __devexit adl_pci6208_pci_remove(struct pci_dev *dev) 312{ 313 comedi_pci_auto_unconfig(dev); 314} 315 316/* This is used by modprobe to translate PCI IDs to drivers. Should 317 * only be used for PCI and ISA-PnP devices */ 318static DEFINE_PCI_DEVICE_TABLE(adl_pci6208_pci_table) = { 319 /* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */ 320 /* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */ 321 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x6208) }, 322 { 0 } 323}; 324MODULE_DEVICE_TABLE(pci, adl_pci6208_pci_table); 325 326static struct pci_driver adl_pci6208_pci_driver = { 327 .name = "adl_pci6208", 328 .id_table = adl_pci6208_pci_table, 329 .probe = adl_pci6208_pci_probe, 330 .remove = __devexit_p(adl_pci6208_pci_remove), 331}; 332module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver); 333 334MODULE_AUTHOR("Comedi http://www.comedi.org"); 335MODULE_DESCRIPTION("Comedi low-level driver"); 336MODULE_LICENSE("GPL"); 337