1/* 2 comedi/drivers/ni_labpc_cs.c 3 Driver for National Instruments daqcard-1200 boards 4 Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@users.sourceforge.net> 5 6 PCMCIA crap is adapted from dummy_cs.c 1.31 2001/08/24 12:13:13 7 from the pcmcia package. 8 The initial developer of the pcmcia dummy_cs.c code is David A. Hinds 9 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds 10 are Copyright (C) 1999 David A. Hinds. 11 12 This program is free software; you can redistribute it and/or modify 13 it under the terms of the GNU General Public License as published by 14 the Free Software Foundation; either version 2 of the License, or 15 (at your option) any later version. 16 17 This program is distributed in the hope that it will be useful, 18 but WITHOUT ANY WARRANTY; without even the implied warranty of 19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 GNU General Public License for more details. 21 22 You should have received a copy of the GNU General Public License 23 along with this program; if not, write to the Free Software 24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 25 26************************************************************************ 27*/ 28/* 29Driver: ni_labpc_cs 30Description: National Instruments Lab-PC (& compatibles) 31Author: Frank Mori Hess <fmhess@users.sourceforge.net> 32Devices: [National Instruments] DAQCard-1200 (daqcard-1200) 33Status: works 34 35Thanks go to Fredrik Lingvall for much testing and perseverance in 36helping to debug daqcard-1200 support. 37 38The 1200 series boards have onboard calibration dacs for correcting 39analog input/output offsets and gains. The proper settings for these 40caldacs are stored on the board's eeprom. To read the caldac values 41from the eeprom and store them into a file that can be then be used by 42comedilib, use the comedi_calibrate program. 43 44Configuration options: 45 none 46 47The daqcard-1200 has quirky chanlist requirements 48when scanning multiple channels. Multiple channel scan 49sequence must start at highest channel, then decrement down to 50channel 0. Chanlists consisting of all one channel 51are also legal, and allow you to pace conversions in bursts. 52 53*/ 54 55/* 56 57NI manuals: 58340988a (daqcard-1200) 59 60*/ 61 62#undef LABPC_DEBUG /* debugging messages */ 63 64#include "../comedidev.h" 65 66#include <linux/delay.h> 67#include <linux/slab.h> 68 69#include "8253.h" 70#include "8255.h" 71#include "comedi_fc.h" 72#include "ni_labpc.h" 73 74#include <pcmcia/cistpl.h> 75#include <pcmcia/cisreg.h> 76#include <pcmcia/ds.h> 77 78static struct pcmcia_device *pcmcia_cur_dev; 79 80static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it); 81 82static const struct labpc_board_struct labpc_cs_boards[] = { 83 { 84 .name = "daqcard-1200", 85 .device_id = 0x103, /* 0x10b is manufacturer id, 86 0x103 is device id */ 87 .ai_speed = 10000, 88 .bustype = pcmcia_bustype, 89 .register_layout = labpc_1200_layout, 90 .has_ao = 1, 91 .ai_range_table = &range_labpc_1200_ai, 92 .ai_range_code = labpc_1200_ai_gain_bits, 93 .ai_range_is_unipolar = labpc_1200_is_unipolar, 94 .ai_scan_up = 0, 95 .memory_mapped_io = 0, 96 }, 97 /* duplicate entry, to support using alternate name */ 98 { 99 .name = "ni_labpc_cs", 100 .device_id = 0x103, 101 .ai_speed = 10000, 102 .bustype = pcmcia_bustype, 103 .register_layout = labpc_1200_layout, 104 .has_ao = 1, 105 .ai_range_table = &range_labpc_1200_ai, 106 .ai_range_code = labpc_1200_ai_gain_bits, 107 .ai_range_is_unipolar = labpc_1200_is_unipolar, 108 .ai_scan_up = 0, 109 .memory_mapped_io = 0, 110 }, 111}; 112 113/* 114 * Useful for shorthand access to the particular board structure 115 */ 116#define thisboard ((const struct labpc_board_struct *)dev->board_ptr) 117 118static struct comedi_driver driver_labpc_cs = { 119 .driver_name = "ni_labpc_cs", 120 .module = THIS_MODULE, 121 .attach = &labpc_attach, 122 .detach = &labpc_common_detach, 123 .num_names = ARRAY_SIZE(labpc_cs_boards), 124 .board_name = &labpc_cs_boards[0].name, 125 .offset = sizeof(struct labpc_board_struct), 126}; 127 128static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it) 129{ 130 unsigned long iobase = 0; 131 unsigned int irq = 0; 132 struct pcmcia_device *link; 133 134 /* allocate and initialize dev->private */ 135 if (alloc_private(dev, sizeof(struct labpc_private)) < 0) 136 return -ENOMEM; 137 138 /* get base address, irq etc. based on bustype */ 139 switch (thisboard->bustype) { 140 case pcmcia_bustype: 141 link = pcmcia_cur_dev; /* XXX hack */ 142 if (!link) 143 return -EIO; 144 iobase = link->resource[0]->start; 145 irq = link->irq; 146 break; 147 default: 148 pr_err("bug! couldn't determine board type\n"); 149 return -EINVAL; 150 break; 151 } 152 return labpc_common_attach(dev, iobase, irq, 0); 153} 154 155static void labpc_config(struct pcmcia_device *link); 156static void labpc_release(struct pcmcia_device *link); 157static int labpc_cs_suspend(struct pcmcia_device *p_dev); 158static int labpc_cs_resume(struct pcmcia_device *p_dev); 159 160static int labpc_cs_attach(struct pcmcia_device *); 161static void labpc_cs_detach(struct pcmcia_device *); 162 163struct local_info_t { 164 struct pcmcia_device *link; 165 int stop; 166 struct bus_operations *bus; 167}; 168 169static int labpc_cs_attach(struct pcmcia_device *link) 170{ 171 struct local_info_t *local; 172 173 dev_dbg(&link->dev, "labpc_cs_attach()\n"); 174 175 /* Allocate space for private device-specific data */ 176 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL); 177 if (!local) 178 return -ENOMEM; 179 local->link = link; 180 link->priv = local; 181 182 pcmcia_cur_dev = link; 183 184 labpc_config(link); 185 186 return 0; 187} /* labpc_cs_attach */ 188 189static void labpc_cs_detach(struct pcmcia_device *link) 190{ 191 dev_dbg(&link->dev, "labpc_cs_detach\n"); 192 193 /* 194 If the device is currently configured and active, we won't 195 actually delete it yet. Instead, it is marked so that when 196 the release() function is called, that will trigger a proper 197 detach(). 198 */ 199 ((struct local_info_t *)link->priv)->stop = 1; 200 labpc_release(link); 201 202 /* This points to the parent local_info_t struct (may be null) */ 203 kfree(link->priv); 204 205} /* labpc_cs_detach */ 206 207static int labpc_pcmcia_config_loop(struct pcmcia_device *p_dev, 208 void *priv_data) 209{ 210 if (p_dev->config_index == 0) 211 return -EINVAL; 212 213 return pcmcia_request_io(p_dev); 214} 215 216 217static void labpc_config(struct pcmcia_device *link) 218{ 219 int ret; 220 221 dev_dbg(&link->dev, "labpc_config\n"); 222 223 link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ | 224 CONF_AUTO_AUDIO | CONF_AUTO_SET_IO; 225 226 ret = pcmcia_loop_config(link, labpc_pcmcia_config_loop, NULL); 227 if (ret) { 228 dev_warn(&link->dev, "no configuration found\n"); 229 goto failed; 230 } 231 232 if (!link->irq) 233 goto failed; 234 235 ret = pcmcia_enable_device(link); 236 if (ret) 237 goto failed; 238 239 return; 240 241failed: 242 labpc_release(link); 243 244} /* labpc_config */ 245 246static void labpc_release(struct pcmcia_device *link) 247{ 248 dev_dbg(&link->dev, "labpc_release\n"); 249 250 pcmcia_disable_device(link); 251} /* labpc_release */ 252 253static int labpc_cs_suspend(struct pcmcia_device *link) 254{ 255 struct local_info_t *local = link->priv; 256 257 /* Mark the device as stopped, to block IO until later */ 258 local->stop = 1; 259 return 0; 260} /* labpc_cs_suspend */ 261 262static int labpc_cs_resume(struct pcmcia_device *link) 263{ 264 struct local_info_t *local = link->priv; 265 266 local->stop = 0; 267 return 0; 268} /* labpc_cs_resume */ 269 270static const struct pcmcia_device_id labpc_cs_ids[] = { 271 /* N.B. These IDs should match those in labpc_cs_boards (ni_labpc.c) */ 272 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0103), /* daqcard-1200 */ 273 PCMCIA_DEVICE_NULL 274}; 275 276MODULE_DEVICE_TABLE(pcmcia, labpc_cs_ids); 277MODULE_AUTHOR("Frank Mori Hess <fmhess@users.sourceforge.net>"); 278MODULE_DESCRIPTION("Comedi driver for National Instruments Lab-PC"); 279MODULE_LICENSE("GPL"); 280 281struct pcmcia_driver labpc_cs_driver = { 282 .probe = labpc_cs_attach, 283 .remove = labpc_cs_detach, 284 .suspend = labpc_cs_suspend, 285 .resume = labpc_cs_resume, 286 .id_table = labpc_cs_ids, 287 .owner = THIS_MODULE, 288 .name = "daqcard-1200", 289}; 290 291static int __init init_labpc_cs(void) 292{ 293 pcmcia_register_driver(&labpc_cs_driver); 294 return 0; 295} 296 297static void __exit exit_labpc_cs(void) 298{ 299 pcmcia_unregister_driver(&labpc_cs_driver); 300} 301 302int __init labpc_init_module(void) 303{ 304 int ret; 305 306 ret = init_labpc_cs(); 307 if (ret < 0) 308 return ret; 309 310 return comedi_driver_register(&driver_labpc_cs); 311} 312 313void __exit labpc_exit_module(void) 314{ 315 exit_labpc_cs(); 316 comedi_driver_unregister(&driver_labpc_cs); 317} 318 319module_init(labpc_init_module); 320module_exit(labpc_exit_module); 321