| 1 | /* |
| 2 | comedi/drivers/ni_daq_dio24.c |
| 3 | Driver for National Instruments PCMCIA DAQ-Card DIO-24 |
| 4 | Copyright (C) 2002 Daniel Vecino Castel <dvecino@able.es> |
| 5 | |
| 6 | PCMCIA crap at end of file 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. All Rights Reserved. |
| 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_daq_dio24 |
| 30 | Description: National Instruments PCMCIA DAQ-Card DIO-24 |
| 31 | Author: Daniel Vecino Castel <dvecino@able.es> |
| 32 | Devices: [National Instruments] PCMCIA DAQ-Card DIO-24 (ni_daq_dio24) |
| 33 | Status: ? |
| 34 | Updated: Thu, 07 Nov 2002 21:53:06 -0800 |
| 35 | |
| 36 | This is just a wrapper around the 8255.o driver to properly handle |
| 37 | the PCMCIA interface. |
| 38 | */ |
| 39 | |
| 40 | /* #define LABPC_DEBUG *//* enable debugging messages */ |
| 41 | #undef LABPC_DEBUG |
| 42 | |
| 43 | #include <linux/interrupt.h> |
| 44 | #include <linux/slab.h> |
| 45 | #include "../comedidev.h" |
| 46 | |
| 47 | #include <linux/ioport.h> |
| 48 | |
| 49 | #include "8255.h" |
| 50 | |
| 51 | #include <pcmcia/cistpl.h> |
| 52 | #include <pcmcia/cisreg.h> |
| 53 | #include <pcmcia/ds.h> |
| 54 | |
| 55 | static struct pcmcia_device *pcmcia_cur_dev; |
| 56 | |
| 57 | #define DIO24_SIZE 4 /* size of io region used by board */ |
| 58 | |
| 59 | static int dio24_attach(struct comedi_device *dev, struct comedi_devconfig *it); |
| 60 | static void dio24_detach(struct comedi_device *dev); |
| 61 | |
| 62 | enum dio24_bustype { pcmcia_bustype }; |
| 63 | |
| 64 | struct dio24_board_struct { |
| 65 | const char *name; |
| 66 | int device_id; /* device id for pcmcia board */ |
| 67 | enum dio24_bustype bustype; /* PCMCIA */ |
| 68 | int have_dio; /* have 8255 chip */ |
| 69 | /* function pointers so we can use inb/outb or readb/writeb as appropriate */ |
| 70 | unsigned int (*read_byte) (unsigned int address); |
| 71 | void (*write_byte) (unsigned int byte, unsigned int address); |
| 72 | }; |
| 73 | |
| 74 | static const struct dio24_board_struct dio24_boards[] = { |
| 75 | { |
| 76 | .name = "daqcard-dio24", |
| 77 | .device_id = 0x475c, /* 0x10b is manufacturer id, 0x475c is device id */ |
| 78 | .bustype = pcmcia_bustype, |
| 79 | .have_dio = 1, |
| 80 | }, |
| 81 | { |
| 82 | .name = "ni_daq_dio24", |
| 83 | .device_id = 0x475c, /* 0x10b is manufacturer id, 0x475c is device id */ |
| 84 | .bustype = pcmcia_bustype, |
| 85 | .have_dio = 1, |
| 86 | }, |
| 87 | }; |
| 88 | |
| 89 | /* |
| 90 | * Useful for shorthand access to the particular board structure |
| 91 | */ |
| 92 | #define thisboard ((const struct dio24_board_struct *)dev->board_ptr) |
| 93 | |
| 94 | struct dio24_private { |
| 95 | |
| 96 | int data; /* number of data points left to be taken */ |
| 97 | }; |
| 98 | |
| 99 | static struct comedi_driver driver_dio24 = { |
| 100 | .driver_name = "ni_daq_dio24", |
| 101 | .module = THIS_MODULE, |
| 102 | .attach = dio24_attach, |
| 103 | .detach = dio24_detach, |
| 104 | .num_names = ARRAY_SIZE(dio24_boards), |
| 105 | .board_name = &dio24_boards[0].name, |
| 106 | .offset = sizeof(struct dio24_board_struct), |
| 107 | }; |
| 108 | |
| 109 | static int dio24_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
| 110 | { |
| 111 | struct dio24_private *devpriv; |
| 112 | struct comedi_subdevice *s; |
| 113 | unsigned long iobase = 0; |
| 114 | #ifdef incomplete |
| 115 | unsigned int irq = 0; |
| 116 | #endif |
| 117 | struct pcmcia_device *link; |
| 118 | int ret; |
| 119 | |
| 120 | devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); |
| 121 | if (!devpriv) |
| 122 | return -ENOMEM; |
| 123 | dev->private = devpriv; |
| 124 | |
| 125 | /* get base address, irq etc. based on bustype */ |
| 126 | switch (thisboard->bustype) { |
| 127 | case pcmcia_bustype: |
| 128 | link = pcmcia_cur_dev; /* XXX hack */ |
| 129 | if (!link) |
| 130 | return -EIO; |
| 131 | iobase = link->resource[0]->start; |
| 132 | #ifdef incomplete |
| 133 | irq = link->irq; |
| 134 | #endif |
| 135 | break; |
| 136 | default: |
| 137 | pr_err("bug! couldn't determine board type\n"); |
| 138 | return -EINVAL; |
| 139 | break; |
| 140 | } |
| 141 | pr_debug("comedi%d: ni_daq_dio24: %s, io 0x%lx", dev->minor, |
| 142 | thisboard->name, iobase); |
| 143 | #ifdef incomplete |
| 144 | if (irq) |
| 145 | pr_debug("irq %u\n", irq); |
| 146 | #endif |
| 147 | |
| 148 | if (iobase == 0) { |
| 149 | pr_err("io base address is zero!\n"); |
| 150 | return -EINVAL; |
| 151 | } |
| 152 | |
| 153 | dev->iobase = iobase; |
| 154 | |
| 155 | #ifdef incomplete |
| 156 | /* grab our IRQ */ |
| 157 | dev->irq = irq; |
| 158 | #endif |
| 159 | |
| 160 | dev->board_name = thisboard->name; |
| 161 | |
| 162 | ret = comedi_alloc_subdevices(dev, 1); |
| 163 | if (ret) |
| 164 | return ret; |
| 165 | |
| 166 | /* 8255 dio */ |
| 167 | s = &dev->subdevices[0]; |
| 168 | subdev_8255_init(dev, s, NULL, dev->iobase); |
| 169 | |
| 170 | return 0; |
| 171 | }; |
| 172 | |
| 173 | static void dio24_detach(struct comedi_device *dev) |
| 174 | { |
| 175 | struct comedi_subdevice *s; |
| 176 | |
| 177 | if (dev->subdevices) { |
| 178 | s = &dev->subdevices[0]; |
| 179 | subdev_8255_cleanup(dev, s); |
| 180 | } |
| 181 | if (thisboard->bustype != pcmcia_bustype && dev->iobase) |
| 182 | release_region(dev->iobase, DIO24_SIZE); |
| 183 | if (dev->irq) |
| 184 | free_irq(dev->irq, dev); |
| 185 | }; |
| 186 | |
| 187 | static void dio24_config(struct pcmcia_device *link); |
| 188 | static void dio24_release(struct pcmcia_device *link); |
| 189 | static int dio24_cs_suspend(struct pcmcia_device *p_dev); |
| 190 | static int dio24_cs_resume(struct pcmcia_device *p_dev); |
| 191 | |
| 192 | static int dio24_cs_attach(struct pcmcia_device *); |
| 193 | static void dio24_cs_detach(struct pcmcia_device *); |
| 194 | |
| 195 | struct local_info_t { |
| 196 | struct pcmcia_device *link; |
| 197 | int stop; |
| 198 | struct bus_operations *bus; |
| 199 | }; |
| 200 | |
| 201 | static int dio24_cs_attach(struct pcmcia_device *link) |
| 202 | { |
| 203 | struct local_info_t *local; |
| 204 | |
| 205 | dev_info(&link->dev, "ni_daq_dio24: HOLA SOY YO - CS-attach!\n"); |
| 206 | |
| 207 | dev_dbg(&link->dev, "dio24_cs_attach()\n"); |
| 208 | |
| 209 | /* Allocate space for private device-specific data */ |
| 210 | local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL); |
| 211 | if (!local) |
| 212 | return -ENOMEM; |
| 213 | local->link = link; |
| 214 | link->priv = local; |
| 215 | |
| 216 | pcmcia_cur_dev = link; |
| 217 | |
| 218 | dio24_config(link); |
| 219 | |
| 220 | return 0; |
| 221 | } /* dio24_cs_attach */ |
| 222 | |
| 223 | static void dio24_cs_detach(struct pcmcia_device *link) |
| 224 | { |
| 225 | ((struct local_info_t *)link->priv)->stop = 1; |
| 226 | dio24_release(link); |
| 227 | |
| 228 | /* This points to the parent local_info_t struct */ |
| 229 | kfree(link->priv); |
| 230 | } |
| 231 | |
| 232 | static int dio24_pcmcia_config_loop(struct pcmcia_device *p_dev, |
| 233 | void *priv_data) |
| 234 | { |
| 235 | if (p_dev->config_index == 0) |
| 236 | return -EINVAL; |
| 237 | |
| 238 | return pcmcia_request_io(p_dev); |
| 239 | } |
| 240 | |
| 241 | static void dio24_config(struct pcmcia_device *link) |
| 242 | { |
| 243 | int ret; |
| 244 | |
| 245 | dev_info(&link->dev, "ni_daq_dio24: HOLA SOY YO! - config\n"); |
| 246 | |
| 247 | dev_dbg(&link->dev, "dio24_config\n"); |
| 248 | |
| 249 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_AUDIO | |
| 250 | CONF_AUTO_SET_IO; |
| 251 | |
| 252 | ret = pcmcia_loop_config(link, dio24_pcmcia_config_loop, NULL); |
| 253 | if (ret) { |
| 254 | dev_warn(&link->dev, "no configuration found\n"); |
| 255 | goto failed; |
| 256 | } |
| 257 | |
| 258 | if (!link->irq) |
| 259 | goto failed; |
| 260 | |
| 261 | ret = pcmcia_enable_device(link); |
| 262 | if (ret) |
| 263 | goto failed; |
| 264 | |
| 265 | return; |
| 266 | |
| 267 | failed: |
| 268 | dev_info(&link->dev, "Fallo"); |
| 269 | dio24_release(link); |
| 270 | |
| 271 | } /* dio24_config */ |
| 272 | |
| 273 | static void dio24_release(struct pcmcia_device *link) |
| 274 | { |
| 275 | dev_dbg(&link->dev, "dio24_release\n"); |
| 276 | |
| 277 | pcmcia_disable_device(link); |
| 278 | } /* dio24_release */ |
| 279 | |
| 280 | static int dio24_cs_suspend(struct pcmcia_device *link) |
| 281 | { |
| 282 | struct local_info_t *local = link->priv; |
| 283 | |
| 284 | /* Mark the device as stopped, to block IO until later */ |
| 285 | local->stop = 1; |
| 286 | return 0; |
| 287 | } /* dio24_cs_suspend */ |
| 288 | |
| 289 | static int dio24_cs_resume(struct pcmcia_device *link) |
| 290 | { |
| 291 | struct local_info_t *local = link->priv; |
| 292 | |
| 293 | local->stop = 0; |
| 294 | return 0; |
| 295 | } /* dio24_cs_resume */ |
| 296 | |
| 297 | /*====================================================================*/ |
| 298 | |
| 299 | static const struct pcmcia_device_id dio24_cs_ids[] = { |
| 300 | /* N.B. These IDs should match those in dio24_boards */ |
| 301 | PCMCIA_DEVICE_MANF_CARD(0x010b, 0x475c), /* daqcard-dio24 */ |
| 302 | PCMCIA_DEVICE_NULL |
| 303 | }; |
| 304 | |
| 305 | MODULE_DEVICE_TABLE(pcmcia, dio24_cs_ids); |
| 306 | MODULE_AUTHOR("Daniel Vecino Castel <dvecino@able.es>"); |
| 307 | MODULE_DESCRIPTION("Comedi driver for National Instruments " |
| 308 | "PCMCIA DAQ-Card DIO-24"); |
| 309 | MODULE_LICENSE("GPL"); |
| 310 | |
| 311 | static struct pcmcia_driver dio24_cs_driver = { |
| 312 | .probe = dio24_cs_attach, |
| 313 | .remove = dio24_cs_detach, |
| 314 | .suspend = dio24_cs_suspend, |
| 315 | .resume = dio24_cs_resume, |
| 316 | .id_table = dio24_cs_ids, |
| 317 | .owner = THIS_MODULE, |
| 318 | .name = "ni_daq_dio24", |
| 319 | }; |
| 320 | |
| 321 | static int __init init_dio24_cs(void) |
| 322 | { |
| 323 | printk("ni_daq_dio24: HOLA SOY YO!\n"); |
| 324 | pcmcia_register_driver(&dio24_cs_driver); |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | static void __exit exit_dio24_cs(void) |
| 329 | { |
| 330 | pcmcia_unregister_driver(&dio24_cs_driver); |
| 331 | } |
| 332 | |
| 333 | int __init init_module(void) |
| 334 | { |
| 335 | int ret; |
| 336 | |
| 337 | ret = init_dio24_cs(); |
| 338 | if (ret < 0) |
| 339 | return ret; |
| 340 | |
| 341 | return comedi_driver_register(&driver_dio24); |
| 342 | } |
| 343 | |
| 344 | void __exit cleanup_module(void) |
| 345 | { |
| 346 | exit_dio24_cs(); |
| 347 | comedi_driver_unregister(&driver_dio24); |
| 348 | } |