1/* 2 comedi/drivers/pci1723.c 3 4 COMEDI - Linux Control and Measurement Device Interface 5 Copyright (C) 2000 David A. Schleef <ds@schleef.org> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16*/ 17/* 18Driver: adv_pci1723 19Description: Advantech PCI-1723 20Author: yonggang <rsmgnu@gmail.com>, Ian Abbott <abbotti@mev.co.uk> 21Devices: [Advantech] PCI-1723 (adv_pci1723) 22Updated: Mon, 14 Apr 2008 15:12:56 +0100 23Status: works 24 25Configuration Options: 26 [0] - PCI bus of device (optional) 27 [1] - PCI slot of device (optional) 28 29 If bus/slot is not specified, the first supported 30 PCI device found will be used. 31 32Subdevice 0 is 8-channel AO, 16-bit, range +/- 10 V. 33 34Subdevice 1 is 16-channel DIO. The channels are configurable as input or 35output in 2 groups (0 to 7, 8 to 15). Configuring any channel implicitly 36configures all channels in the same group. 37 38TODO: 39 401. Add the two milliamp ranges to the AO subdevice (0 to 20 mA, 4 to 20 mA). 412. Read the initial ranges and values of the AO subdevice at start-up instead 42 of reinitializing them. 433. Implement calibration. 44*/ 45 46#include <linux/module.h> 47#include <linux/pci.h> 48 49#include "../comedidev.h" 50 51/* all the registers for the pci1723 board */ 52#define PCI1723_DA(N) ((N)<<1) /* W: D/A register N (0 to 7) */ 53 54#define PCI1723_SYN_SET 0x12 /* synchronized set register */ 55#define PCI1723_ALL_CHNNELE_SYN_STROBE 0x12 56 /* synchronized status register */ 57 58#define PCI1723_RANGE_CALIBRATION_MODE 0x14 59 /* range and calibration mode */ 60#define PCI1723_RANGE_CALIBRATION_STATUS 0x14 61 /* range and calibration status */ 62 63#define PCI1723_CONTROL_CMD_CALIBRATION_FUN 0x16 64 /* 65 * SADC control command for 66 * calibration function 67 */ 68#define PCI1723_STATUS_CMD_CALIBRATION_FUN 0x16 69 /* 70 * SADC control status for 71 * calibration function 72 */ 73 74#define PCI1723_CALIBRATION_PARA_STROBE 0x18 75 /* Calibration parameter strobe */ 76 77#define PCI1723_DIGITAL_IO_PORT_SET 0x1A /* Digital I/O port setting */ 78#define PCI1723_DIGITAL_IO_PORT_MODE 0x1A /* Digital I/O port mode */ 79 80#define PCI1723_WRITE_DIGITAL_OUTPUT_CMD 0x1C 81 /* Write digital output command */ 82#define PCI1723_READ_DIGITAL_INPUT_DATA 0x1C /* Read digital input data */ 83 84#define PCI1723_WRITE_CAL_CMD 0x1E /* Write calibration command */ 85#define PCI1723_READ_CAL_STATUS 0x1E /* Read calibration status */ 86 87#define PCI1723_SYN_STROBE 0x20 /* Synchronized strobe */ 88 89#define PCI1723_RESET_ALL_CHN_STROBE 0x22 90 /* Reset all D/A channels strobe */ 91 92#define PCI1723_RESET_CAL_CONTROL_STROBE 0x24 93 /* 94 * Reset the calibration 95 * controller strobe 96 */ 97 98#define PCI1723_CHANGE_CHA_OUTPUT_TYPE_STROBE 0x26 99 /* 100 * Change D/A channels output 101 * type strobe 102 */ 103 104#define PCI1723_SELECT_CALIBRATION 0x28 /* Select the calibration Ref_V */ 105 106struct pci1723_private { 107 unsigned char da_range[8]; /* D/A output range for each channel */ 108 unsigned short ao_data[8]; /* data output buffer */ 109}; 110 111/* 112 * The pci1723 card reset; 113 */ 114static int pci1723_reset(struct comedi_device *dev) 115{ 116 struct pci1723_private *devpriv = dev->private; 117 int i; 118 119 outw(0x01, dev->iobase + PCI1723_SYN_SET); 120 /* set synchronous output mode */ 121 122 for (i = 0; i < 8; i++) { 123 /* set all outputs to 0V */ 124 devpriv->ao_data[i] = 0x8000; 125 outw(devpriv->ao_data[i], dev->iobase + PCI1723_DA(i)); 126 /* set all ranges to +/- 10V */ 127 devpriv->da_range[i] = 0; 128 outw(((devpriv->da_range[i] << 4) | i), 129 PCI1723_RANGE_CALIBRATION_MODE); 130 } 131 132 outw(0, dev->iobase + PCI1723_CHANGE_CHA_OUTPUT_TYPE_STROBE); 133 /* update ranges */ 134 outw(0, dev->iobase + PCI1723_SYN_STROBE); /* update outputs */ 135 136 /* set asynchronous output mode */ 137 outw(0, dev->iobase + PCI1723_SYN_SET); 138 139 return 0; 140} 141 142static int pci1723_insn_read_ao(struct comedi_device *dev, 143 struct comedi_subdevice *s, 144 struct comedi_insn *insn, unsigned int *data) 145{ 146 struct pci1723_private *devpriv = dev->private; 147 int n, chan; 148 149 chan = CR_CHAN(insn->chanspec); 150 for (n = 0; n < insn->n; n++) 151 data[n] = devpriv->ao_data[chan]; 152 153 return n; 154} 155 156/* 157 analog data output; 158*/ 159static int pci1723_ao_write_winsn(struct comedi_device *dev, 160 struct comedi_subdevice *s, 161 struct comedi_insn *insn, unsigned int *data) 162{ 163 struct pci1723_private *devpriv = dev->private; 164 unsigned int chan = CR_CHAN(insn->chanspec); 165 int n; 166 167 for (n = 0; n < insn->n; n++) { 168 devpriv->ao_data[chan] = data[n]; 169 outw(data[n], dev->iobase + PCI1723_DA(chan)); 170 } 171 172 return n; 173} 174 175/* 176 digital i/o config/query 177*/ 178static int pci1723_dio_insn_config(struct comedi_device *dev, 179 struct comedi_subdevice *s, 180 struct comedi_insn *insn, unsigned int *data) 181{ 182 unsigned int chan = CR_CHAN(insn->chanspec); 183 unsigned int mask; 184 unsigned short mode; 185 int ret; 186 187 if (chan < 8) 188 mask = 0x00ff; 189 else 190 mask = 0xff00; 191 192 ret = comedi_dio_insn_config(dev, s, insn, data, mask); 193 if (ret) 194 return ret; 195 196 /* update hardware DIO mode */ 197 mode = 0x0000; /* assume output */ 198 if (!(s->io_bits & 0x00ff)) 199 mode |= 0x0001; /* low byte input */ 200 if (!(s->io_bits & 0xff00)) 201 mode |= 0x0002; /* high byte input */ 202 outw(mode, dev->iobase + PCI1723_DIGITAL_IO_PORT_SET); 203 204 return insn->n; 205} 206 207static int pci1723_dio_insn_bits(struct comedi_device *dev, 208 struct comedi_subdevice *s, 209 struct comedi_insn *insn, 210 unsigned int *data) 211{ 212 if (comedi_dio_update_state(s, data)) 213 outw(s->state, dev->iobase + PCI1723_WRITE_DIGITAL_OUTPUT_CMD); 214 215 data[1] = inw(dev->iobase + PCI1723_READ_DIGITAL_INPUT_DATA); 216 217 return insn->n; 218} 219 220static int pci1723_auto_attach(struct comedi_device *dev, 221 unsigned long context_unused) 222{ 223 struct pci_dev *pcidev = comedi_to_pci_dev(dev); 224 struct pci1723_private *devpriv; 225 struct comedi_subdevice *s; 226 int ret; 227 228 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); 229 if (!devpriv) 230 return -ENOMEM; 231 232 ret = comedi_pci_enable(dev); 233 if (ret) 234 return ret; 235 dev->iobase = pci_resource_start(pcidev, 2); 236 237 ret = comedi_alloc_subdevices(dev, 2); 238 if (ret) 239 return ret; 240 241 s = &dev->subdevices[0]; 242 dev->write_subdev = s; 243 s->type = COMEDI_SUBD_AO; 244 s->subdev_flags = SDF_WRITEABLE | SDF_GROUND | SDF_COMMON; 245 s->n_chan = 8; 246 s->maxdata = 0xffff; 247 s->len_chanlist = 8; 248 s->range_table = &range_bipolar10; 249 s->insn_write = pci1723_ao_write_winsn; 250 s->insn_read = pci1723_insn_read_ao; 251 252 s = &dev->subdevices[1]; 253 s->type = COMEDI_SUBD_DIO; 254 s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 255 s->n_chan = 16; 256 s->maxdata = 1; 257 s->len_chanlist = 16; 258 s->range_table = &range_digital; 259 s->insn_config = pci1723_dio_insn_config; 260 s->insn_bits = pci1723_dio_insn_bits; 261 262 /* read DIO config */ 263 switch (inw(dev->iobase + PCI1723_DIGITAL_IO_PORT_MODE) & 0x03) { 264 case 0x00: /* low byte output, high byte output */ 265 s->io_bits = 0xFFFF; 266 break; 267 case 0x01: /* low byte input, high byte output */ 268 s->io_bits = 0xFF00; 269 break; 270 case 0x02: /* low byte output, high byte input */ 271 s->io_bits = 0x00FF; 272 break; 273 case 0x03: /* low byte input, high byte input */ 274 s->io_bits = 0x0000; 275 break; 276 } 277 /* read DIO port state */ 278 s->state = inw(dev->iobase + PCI1723_READ_DIGITAL_INPUT_DATA); 279 280 pci1723_reset(dev); 281 282 return 0; 283} 284 285static void pci1723_detach(struct comedi_device *dev) 286{ 287 if (dev->iobase) 288 pci1723_reset(dev); 289 comedi_pci_detach(dev); 290} 291 292static struct comedi_driver adv_pci1723_driver = { 293 .driver_name = "adv_pci1723", 294 .module = THIS_MODULE, 295 .auto_attach = pci1723_auto_attach, 296 .detach = pci1723_detach, 297}; 298 299static int adv_pci1723_pci_probe(struct pci_dev *dev, 300 const struct pci_device_id *id) 301{ 302 return comedi_pci_auto_config(dev, &adv_pci1723_driver, 303 id->driver_data); 304} 305 306static const struct pci_device_id adv_pci1723_pci_table[] = { 307 { PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1723) }, 308 { 0 } 309}; 310MODULE_DEVICE_TABLE(pci, adv_pci1723_pci_table); 311 312static struct pci_driver adv_pci1723_pci_driver = { 313 .name = "adv_pci1723", 314 .id_table = adv_pci1723_pci_table, 315 .probe = adv_pci1723_pci_probe, 316 .remove = comedi_pci_auto_unconfig, 317}; 318module_comedi_pci_driver(adv_pci1723_driver, adv_pci1723_pci_driver); 319 320MODULE_AUTHOR("Comedi http://www.comedi.org"); 321MODULE_DESCRIPTION("Comedi low-level driver"); 322MODULE_LICENSE("GPL"); 323