| 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 | /* |
| 29 | Driver: ni_labpc_cs |
| 30 | Description: National Instruments Lab-PC (& compatibles) |
| 31 | Author: Frank Mori Hess <fmhess@users.sourceforge.net> |
| 32 | Devices: [National Instruments] DAQCard-1200 (daqcard-1200) |
| 33 | Status: works |
| 34 | |
| 35 | Thanks go to Fredrik Lingvall for much testing and perseverance in |
| 36 | helping to debug daqcard-1200 support. |
| 37 | |
| 38 | The 1200 series boards have onboard calibration dacs for correcting |
| 39 | analog input/output offsets and gains. The proper settings for these |
| 40 | caldacs are stored on the board's eeprom. To read the caldac values |
| 41 | from the eeprom and store them into a file that can be then be used by |
| 42 | comedilib, use the comedi_calibrate program. |
| 43 | |
| 44 | Configuration options: |
| 45 | none |
| 46 | |
| 47 | The daqcard-1200 has quirky chanlist requirements |
| 48 | when scanning multiple channels. Multiple channel scan |
| 49 | sequence must start at highest channel, then decrement down to |
| 50 | channel 0. Chanlists consisting of all one channel |
| 51 | are also legal, and allow you to pace conversions in bursts. |
| 52 | |
| 53 | */ |
| 54 | |
| 55 | /* |
| 56 | |
| 57 | NI manuals: |
| 58 | 340988a (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 | |
| 78 | static struct pcmcia_device *pcmcia_cur_dev; |
| 79 | |
| 80 | static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it); |
| 81 | |
| 82 | static 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 | |
| 118 | static 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 | |
| 128 | static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
| 129 | { |
| 130 | struct labpc_private *devpriv; |
| 131 | unsigned long iobase = 0; |
| 132 | unsigned int irq = 0; |
| 133 | struct pcmcia_device *link; |
| 134 | |
| 135 | devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); |
| 136 | if (!devpriv) |
| 137 | return -ENOMEM; |
| 138 | dev->private = devpriv; |
| 139 | |
| 140 | /* get base address, irq etc. based on bustype */ |
| 141 | switch (thisboard->bustype) { |
| 142 | case pcmcia_bustype: |
| 143 | link = pcmcia_cur_dev; /* XXX hack */ |
| 144 | if (!link) |
| 145 | return -EIO; |
| 146 | iobase = link->resource[0]->start; |
| 147 | irq = link->irq; |
| 148 | break; |
| 149 | default: |
| 150 | pr_err("bug! couldn't determine board type\n"); |
| 151 | return -EINVAL; |
| 152 | break; |
| 153 | } |
| 154 | return labpc_common_attach(dev, iobase, irq, 0); |
| 155 | } |
| 156 | |
| 157 | static void labpc_config(struct pcmcia_device *link); |
| 158 | static void labpc_release(struct pcmcia_device *link); |
| 159 | static int labpc_cs_suspend(struct pcmcia_device *p_dev); |
| 160 | static int labpc_cs_resume(struct pcmcia_device *p_dev); |
| 161 | |
| 162 | static int labpc_cs_attach(struct pcmcia_device *); |
| 163 | static void labpc_cs_detach(struct pcmcia_device *); |
| 164 | |
| 165 | struct local_info_t { |
| 166 | struct pcmcia_device *link; |
| 167 | int stop; |
| 168 | struct bus_operations *bus; |
| 169 | }; |
| 170 | |
| 171 | static int labpc_cs_attach(struct pcmcia_device *link) |
| 172 | { |
| 173 | struct local_info_t *local; |
| 174 | |
| 175 | dev_dbg(&link->dev, "labpc_cs_attach()\n"); |
| 176 | |
| 177 | /* Allocate space for private device-specific data */ |
| 178 | local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL); |
| 179 | if (!local) |
| 180 | return -ENOMEM; |
| 181 | local->link = link; |
| 182 | link->priv = local; |
| 183 | |
| 184 | pcmcia_cur_dev = link; |
| 185 | |
| 186 | labpc_config(link); |
| 187 | |
| 188 | return 0; |
| 189 | } /* labpc_cs_attach */ |
| 190 | |
| 191 | static void labpc_cs_detach(struct pcmcia_device *link) |
| 192 | { |
| 193 | ((struct local_info_t *)link->priv)->stop = 1; |
| 194 | labpc_release(link); |
| 195 | |
| 196 | /* This points to the parent local_info_t struct (may be null) */ |
| 197 | kfree(link->priv); |
| 198 | |
| 199 | } |
| 200 | |
| 201 | static int labpc_pcmcia_config_loop(struct pcmcia_device *p_dev, |
| 202 | void *priv_data) |
| 203 | { |
| 204 | if (p_dev->config_index == 0) |
| 205 | return -EINVAL; |
| 206 | |
| 207 | return pcmcia_request_io(p_dev); |
| 208 | } |
| 209 | |
| 210 | |
| 211 | static void labpc_config(struct pcmcia_device *link) |
| 212 | { |
| 213 | int ret; |
| 214 | |
| 215 | dev_dbg(&link->dev, "labpc_config\n"); |
| 216 | |
| 217 | link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ | |
| 218 | CONF_AUTO_AUDIO | CONF_AUTO_SET_IO; |
| 219 | |
| 220 | ret = pcmcia_loop_config(link, labpc_pcmcia_config_loop, NULL); |
| 221 | if (ret) { |
| 222 | dev_warn(&link->dev, "no configuration found\n"); |
| 223 | goto failed; |
| 224 | } |
| 225 | |
| 226 | if (!link->irq) |
| 227 | goto failed; |
| 228 | |
| 229 | ret = pcmcia_enable_device(link); |
| 230 | if (ret) |
| 231 | goto failed; |
| 232 | |
| 233 | return; |
| 234 | |
| 235 | failed: |
| 236 | labpc_release(link); |
| 237 | |
| 238 | } /* labpc_config */ |
| 239 | |
| 240 | static void labpc_release(struct pcmcia_device *link) |
| 241 | { |
| 242 | dev_dbg(&link->dev, "labpc_release\n"); |
| 243 | |
| 244 | pcmcia_disable_device(link); |
| 245 | } /* labpc_release */ |
| 246 | |
| 247 | static int labpc_cs_suspend(struct pcmcia_device *link) |
| 248 | { |
| 249 | struct local_info_t *local = link->priv; |
| 250 | |
| 251 | /* Mark the device as stopped, to block IO until later */ |
| 252 | local->stop = 1; |
| 253 | return 0; |
| 254 | } /* labpc_cs_suspend */ |
| 255 | |
| 256 | static int labpc_cs_resume(struct pcmcia_device *link) |
| 257 | { |
| 258 | struct local_info_t *local = link->priv; |
| 259 | |
| 260 | local->stop = 0; |
| 261 | return 0; |
| 262 | } /* labpc_cs_resume */ |
| 263 | |
| 264 | static const struct pcmcia_device_id labpc_cs_ids[] = { |
| 265 | /* N.B. These IDs should match those in labpc_cs_boards (ni_labpc.c) */ |
| 266 | PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0103), /* daqcard-1200 */ |
| 267 | PCMCIA_DEVICE_NULL |
| 268 | }; |
| 269 | |
| 270 | MODULE_DEVICE_TABLE(pcmcia, labpc_cs_ids); |
| 271 | MODULE_AUTHOR("Frank Mori Hess <fmhess@users.sourceforge.net>"); |
| 272 | MODULE_DESCRIPTION("Comedi driver for National Instruments Lab-PC"); |
| 273 | MODULE_LICENSE("GPL"); |
| 274 | |
| 275 | static struct pcmcia_driver labpc_cs_driver = { |
| 276 | .probe = labpc_cs_attach, |
| 277 | .remove = labpc_cs_detach, |
| 278 | .suspend = labpc_cs_suspend, |
| 279 | .resume = labpc_cs_resume, |
| 280 | .id_table = labpc_cs_ids, |
| 281 | .owner = THIS_MODULE, |
| 282 | .name = "daqcard-1200", |
| 283 | }; |
| 284 | |
| 285 | static int __init init_labpc_cs(void) |
| 286 | { |
| 287 | pcmcia_register_driver(&labpc_cs_driver); |
| 288 | return 0; |
| 289 | } |
| 290 | |
| 291 | static void __exit exit_labpc_cs(void) |
| 292 | { |
| 293 | pcmcia_unregister_driver(&labpc_cs_driver); |
| 294 | } |
| 295 | |
| 296 | static int __init labpc_init_module(void) |
| 297 | { |
| 298 | int ret; |
| 299 | |
| 300 | ret = init_labpc_cs(); |
| 301 | if (ret < 0) |
| 302 | return ret; |
| 303 | |
| 304 | return comedi_driver_register(&driver_labpc_cs); |
| 305 | } |
| 306 | |
| 307 | static void __exit labpc_exit_module(void) |
| 308 | { |
| 309 | exit_labpc_cs(); |
| 310 | comedi_driver_unregister(&driver_labpc_cs); |
| 311 | } |
| 312 | |
| 313 | module_init(labpc_init_module); |
| 314 | module_exit(labpc_exit_module); |