David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1 | /** |
| 2 | * @file me8200_do.c |
| 3 | * |
| 4 | * @brief ME-8200 digital output subdevice instance. |
| 5 | * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) |
| 6 | * @author Guenter Gebhardt |
| 7 | * @author Krzysztof Gantzke (k.gantzke@meilhaus.de) |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) |
| 12 | * |
| 13 | * This file is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 26 | */ |
| 27 | |
| 28 | #ifndef __KERNEL__ |
| 29 | # define __KERNEL__ |
| 30 | #endif |
| 31 | |
| 32 | /* |
| 33 | * Includes |
| 34 | */ |
| 35 | #include <linux/module.h> |
| 36 | |
| 37 | #include <linux/slab.h> |
| 38 | #include <linux/spinlock.h> |
| 39 | #include <linux/interrupt.h> |
| 40 | #include <asm/io.h> |
| 41 | #include <linux/types.h> |
| 42 | #include <linux/version.h> |
| 43 | |
| 44 | #include "medefines.h" |
| 45 | #include "meinternal.h" |
| 46 | #include "meerror.h" |
| 47 | |
| 48 | #include "meids.h" |
| 49 | #include "medebug.h" |
| 50 | #include "me8200_reg.h" |
| 51 | #include "me8200_do_reg.h" |
| 52 | #include "me8200_do.h" |
| 53 | |
| 54 | /* |
| 55 | * Defines |
| 56 | */ |
| 57 | |
| 58 | /* |
| 59 | * Functions |
| 60 | */ |
| 61 | |
| 62 | static int me8200_do_io_irq_start(me_subdevice_t * subdevice, |
| 63 | struct file *filep, |
| 64 | int channel, |
| 65 | int irq_source, |
| 66 | int irq_edge, int irq_arg, int flags) |
| 67 | { |
| 68 | me8200_do_subdevice_t *instance; |
| 69 | int err = ME_ERRNO_SUCCESS; |
| 70 | uint8_t tmp; |
| 71 | unsigned long status; |
| 72 | |
| 73 | if (flags & ~ME_IO_IRQ_START_DIO_BYTE) { |
| 74 | PERROR("Invalid flag specified.\n"); |
| 75 | return ME_ERRNO_INVALID_FLAGS; |
| 76 | } |
| 77 | |
| 78 | if (channel != 0) { |
| 79 | PERROR("Invalid channel specified.\n"); |
| 80 | return ME_ERRNO_INVALID_CHANNEL; |
| 81 | } |
| 82 | |
| 83 | if (irq_source != ME_IRQ_SOURCE_DIO_OVER_TEMP) { |
| 84 | PERROR("Invalid interrupt source specified.\n"); |
| 85 | return ME_ERRNO_INVALID_IRQ_SOURCE; |
| 86 | } |
| 87 | |
| 88 | PDEBUG("executed.\n"); |
| 89 | |
| 90 | instance = (me8200_do_subdevice_t *) subdevice; |
| 91 | |
| 92 | ME_SUBDEVICE_ENTER; |
| 93 | |
| 94 | spin_lock_irqsave(&instance->subdevice_lock, status); |
| 95 | spin_lock(instance->irq_mode_lock); |
| 96 | tmp = inb(instance->irq_ctrl_reg); |
| 97 | tmp |= |
| 98 | ME8200_IRQ_MODE_BIT_ENABLE_POWER << (ME8200_IRQ_MODE_POWER_SHIFT * |
| 99 | instance->do_idx); |
| 100 | outb(tmp, instance->irq_ctrl_reg); |
| 101 | PDEBUG_REG("irq_ctrl_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 102 | instance->irq_ctrl_reg - instance->reg_base, tmp); |
| 103 | spin_unlock(instance->irq_mode_lock); |
| 104 | instance->rised = 0; |
| 105 | spin_unlock_irqrestore(&instance->subdevice_lock, status); |
| 106 | |
| 107 | ME_SUBDEVICE_EXIT; |
| 108 | |
| 109 | return err; |
| 110 | } |
| 111 | |
| 112 | static int me8200_do_io_irq_wait(me_subdevice_t * subdevice, |
| 113 | struct file *filep, |
| 114 | int channel, |
| 115 | int *irq_count, |
| 116 | int *value, int time_out, int flags) |
| 117 | { |
| 118 | me8200_do_subdevice_t *instance; |
| 119 | int err = ME_ERRNO_SUCCESS; |
| 120 | long t = 0; |
| 121 | unsigned long cpu_flags; |
| 122 | |
| 123 | PDEBUG("executed.\n"); |
| 124 | |
| 125 | instance = (me8200_do_subdevice_t *) subdevice; |
| 126 | |
| 127 | if (flags) { |
| 128 | PERROR("Invalid flag specified.\n"); |
| 129 | return ME_ERRNO_INVALID_FLAGS; |
| 130 | } |
| 131 | |
| 132 | if (time_out < 0) { |
| 133 | PERROR("Invalid time_out specified.\n"); |
| 134 | return ME_ERRNO_INVALID_TIMEOUT; |
| 135 | } |
| 136 | |
| 137 | if (time_out) { |
| 138 | t = (time_out * HZ) / 1000; |
| 139 | |
| 140 | if (t == 0) |
| 141 | t = 1; |
| 142 | } |
| 143 | |
| 144 | ME_SUBDEVICE_ENTER; |
| 145 | |
| 146 | if (instance->rised <= 0) { |
| 147 | instance->rised = 0; |
| 148 | |
| 149 | if (time_out) { |
| 150 | t = wait_event_interruptible_timeout(instance-> |
| 151 | wait_queue, |
| 152 | (instance->rised != |
| 153 | 0), t); |
| 154 | |
| 155 | if (t == 0) { |
| 156 | PERROR |
| 157 | ("Wait on external interrupt timed out.\n"); |
| 158 | err = ME_ERRNO_TIMEOUT; |
| 159 | } |
| 160 | } else { |
| 161 | wait_event_interruptible(instance->wait_queue, |
| 162 | (instance->rised != 0)); |
| 163 | } |
| 164 | |
| 165 | if (instance->rised < 0) { |
| 166 | PERROR("Wait on interrupt aborted by user.\n"); |
| 167 | err = ME_ERRNO_CANCELLED; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | if (signal_pending(current)) { |
| 172 | PERROR("Wait on external interrupt aborted by signal.\n"); |
| 173 | err = ME_ERRNO_SIGNAL; |
| 174 | } |
| 175 | |
| 176 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 177 | instance->rised = 0; |
| 178 | *irq_count = instance->count; |
| 179 | *value = 0; |
| 180 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 181 | |
| 182 | ME_SUBDEVICE_EXIT; |
| 183 | |
| 184 | return err; |
| 185 | } |
| 186 | |
| 187 | static int me8200_do_io_irq_stop(me_subdevice_t * subdevice, |
| 188 | struct file *filep, int channel, int flags) |
| 189 | { |
| 190 | me8200_do_subdevice_t *instance; |
| 191 | uint8_t tmp; |
| 192 | unsigned long cpu_flags; |
| 193 | |
| 194 | PDEBUG("executed.\n"); |
| 195 | |
| 196 | instance = (me8200_do_subdevice_t *) subdevice; |
| 197 | |
| 198 | if (flags) { |
| 199 | PERROR("Invalid flag specified.\n"); |
| 200 | return ME_ERRNO_INVALID_FLAGS; |
| 201 | } |
| 202 | |
| 203 | ME_SUBDEVICE_ENTER; |
| 204 | |
| 205 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 206 | spin_lock(instance->irq_mode_lock); |
| 207 | tmp = inb(instance->irq_ctrl_reg); |
| 208 | tmp &= |
| 209 | ~(ME8200_IRQ_MODE_BIT_ENABLE_POWER << |
| 210 | (ME8200_IRQ_MODE_POWER_SHIFT * instance->do_idx)); |
| 211 | outb(tmp, instance->irq_ctrl_reg); |
| 212 | PDEBUG_REG("irq_ctrl_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 213 | instance->irq_ctrl_reg - instance->reg_base, tmp); |
| 214 | spin_unlock(instance->irq_mode_lock); |
| 215 | instance->rised = -1; |
| 216 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 217 | wake_up_interruptible_all(&instance->wait_queue); |
| 218 | |
| 219 | ME_SUBDEVICE_EXIT; |
| 220 | |
| 221 | return ME_ERRNO_SUCCESS; |
| 222 | } |
| 223 | |
| 224 | static int me8200_do_io_reset_subdevice(struct me_subdevice *subdevice, |
| 225 | struct file *filep, int flags) |
| 226 | { |
| 227 | me8200_do_subdevice_t *instance; |
| 228 | unsigned long cpu_flags; |
| 229 | uint8_t tmp; |
| 230 | |
| 231 | PDEBUG("executed.\n"); |
| 232 | |
| 233 | instance = (me8200_do_subdevice_t *) subdevice; |
| 234 | |
| 235 | if (flags) { |
| 236 | PERROR("Invalid flag specified.\n"); |
| 237 | return ME_ERRNO_INVALID_FLAGS; |
| 238 | } |
| 239 | |
| 240 | ME_SUBDEVICE_ENTER; |
| 241 | |
| 242 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 243 | outb(0x00, instance->port_reg); |
| 244 | PDEBUG_REG("port_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 245 | instance->port_reg - instance->reg_base, 0x00); |
| 246 | spin_lock(instance->irq_mode_lock); |
| 247 | tmp = inb(instance->irq_ctrl_reg); |
| 248 | tmp &= |
| 249 | ~(ME8200_IRQ_MODE_BIT_ENABLE_POWER << |
| 250 | (ME8200_IRQ_MODE_POWER_SHIFT * instance->do_idx)); |
| 251 | outb(tmp, instance->irq_ctrl_reg); |
| 252 | PDEBUG_REG("irq_ctrl_reg outb(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 253 | instance->irq_ctrl_reg - instance->reg_base, tmp); |
| 254 | spin_unlock(instance->irq_mode_lock); |
| 255 | instance->rised = -1; |
| 256 | instance->count = 0; |
| 257 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 258 | wake_up_interruptible_all(&instance->wait_queue); |
| 259 | |
| 260 | ME_SUBDEVICE_EXIT; |
| 261 | |
| 262 | return ME_ERRNO_SUCCESS; |
| 263 | } |
| 264 | |
| 265 | static int me8200_do_io_single_config(me_subdevice_t * subdevice, |
| 266 | struct file *filep, |
| 267 | int channel, |
| 268 | int single_config, |
| 269 | int ref, |
| 270 | int trig_chan, |
| 271 | int trig_type, int trig_edge, int flags) |
| 272 | { |
| 273 | me8200_do_subdevice_t *instance; |
| 274 | int err = ME_ERRNO_SUCCESS; |
| 275 | unsigned long status; |
| 276 | |
| 277 | PDEBUG("executed.\n"); |
| 278 | |
| 279 | instance = (me8200_do_subdevice_t *) subdevice; |
| 280 | |
| 281 | ME_SUBDEVICE_ENTER; |
| 282 | |
| 283 | spin_lock_irqsave(&instance->subdevice_lock, status); |
| 284 | switch (flags) { |
| 285 | case ME_IO_SINGLE_CONFIG_NO_FLAGS: |
| 286 | case ME_IO_SINGLE_CONFIG_DIO_BYTE: |
| 287 | if (channel == 0) { |
| 288 | if (single_config == ME_SINGLE_CONFIG_DIO_OUTPUT) { |
| 289 | } else { |
| 290 | PERROR("Invalid byte direction specified.\n"); |
| 291 | err = ME_ERRNO_INVALID_SINGLE_CONFIG; |
| 292 | } |
| 293 | } else { |
| 294 | PERROR("Invalid byte specified.\n"); |
| 295 | err = ME_ERRNO_INVALID_CHANNEL; |
| 296 | } |
| 297 | break; |
| 298 | |
| 299 | default: |
| 300 | PERROR("Invalid flags specified.\n"); |
| 301 | err = ME_ERRNO_INVALID_FLAGS; |
| 302 | } |
| 303 | spin_unlock_irqrestore(&instance->subdevice_lock, status); |
| 304 | |
| 305 | ME_SUBDEVICE_EXIT; |
| 306 | |
| 307 | return err; |
| 308 | } |
| 309 | |
| 310 | static int me8200_do_io_single_read(me_subdevice_t * subdevice, |
| 311 | struct file *filep, |
| 312 | int channel, |
| 313 | int *value, int time_out, int flags) |
| 314 | { |
| 315 | me8200_do_subdevice_t *instance; |
| 316 | int err = ME_ERRNO_SUCCESS; |
| 317 | unsigned long status; |
| 318 | |
| 319 | PDEBUG("executed.\n"); |
| 320 | |
| 321 | instance = (me8200_do_subdevice_t *) subdevice; |
| 322 | |
| 323 | ME_SUBDEVICE_ENTER; |
| 324 | |
| 325 | spin_lock_irqsave(&instance->subdevice_lock, status); |
| 326 | switch (flags) { |
| 327 | case ME_IO_SINGLE_TYPE_DIO_BIT: |
| 328 | if ((channel >= 0) && (channel < 8)) { |
| 329 | *value = inb(instance->port_reg) & (0x1 << channel); |
| 330 | } else { |
| 331 | PERROR("Invalid bit number specified.\n"); |
| 332 | err = ME_ERRNO_INVALID_CHANNEL; |
| 333 | } |
| 334 | break; |
| 335 | |
| 336 | case ME_IO_SINGLE_NO_FLAGS: |
| 337 | case ME_IO_SINGLE_TYPE_DIO_BYTE: |
| 338 | if (channel == 0) { |
| 339 | *value = inb(instance->port_reg); |
| 340 | } else { |
| 341 | PERROR("Invalid byte number specified.\n"); |
| 342 | err = ME_ERRNO_INVALID_CHANNEL; |
| 343 | } |
| 344 | break; |
| 345 | |
| 346 | default: |
| 347 | PERROR("Invalid flags specified.\n"); |
| 348 | err = ME_ERRNO_INVALID_FLAGS; |
| 349 | } |
| 350 | spin_unlock_irqrestore(&instance->subdevice_lock, status); |
| 351 | |
| 352 | ME_SUBDEVICE_EXIT; |
| 353 | |
| 354 | return err; |
| 355 | } |
| 356 | |
| 357 | static int me8200_do_io_single_write(me_subdevice_t * subdevice, |
| 358 | struct file *filep, |
| 359 | int channel, |
| 360 | int value, int time_out, int flags) |
| 361 | { |
| 362 | me8200_do_subdevice_t *instance; |
| 363 | int err = ME_ERRNO_SUCCESS; |
| 364 | uint8_t state; |
| 365 | unsigned long status; |
| 366 | |
| 367 | PDEBUG("executed.\n"); |
| 368 | |
| 369 | instance = (me8200_do_subdevice_t *) subdevice; |
| 370 | |
| 371 | ME_SUBDEVICE_ENTER; |
| 372 | |
| 373 | spin_lock_irqsave(&instance->subdevice_lock, status); |
| 374 | switch (flags) { |
| 375 | case ME_IO_SINGLE_TYPE_DIO_BIT: |
| 376 | if ((channel >= 0) && (channel < 8)) { |
| 377 | state = inb(instance->port_reg); |
| 378 | state = |
| 379 | value ? (state | (0x1 << channel)) : (state & |
| 380 | ~(0x1 << |
| 381 | channel)); |
| 382 | outb(state, instance->port_reg); |
| 383 | PDEBUG_REG("port_reg outb(0x%lX+0x%lX)=0x%x\n", |
| 384 | instance->reg_base, |
| 385 | instance->port_reg - instance->reg_base, |
| 386 | state); |
| 387 | } else { |
| 388 | PERROR("Invalid bit number specified.\n"); |
| 389 | err = ME_ERRNO_INVALID_CHANNEL; |
| 390 | } |
| 391 | break; |
| 392 | |
| 393 | case ME_IO_SINGLE_NO_FLAGS: |
| 394 | case ME_IO_SINGLE_TYPE_DIO_BYTE: |
| 395 | if (channel == 0) { |
| 396 | outb(value, instance->port_reg); |
| 397 | PDEBUG_REG("port_reg outb(0x%lX+0x%lX)=0x%x\n", |
| 398 | instance->reg_base, |
| 399 | instance->port_reg - instance->reg_base, |
| 400 | value); |
| 401 | } else { |
| 402 | PERROR("Invalid byte number specified.\n"); |
| 403 | err = ME_ERRNO_INVALID_CHANNEL; |
| 404 | } |
| 405 | break; |
| 406 | |
| 407 | default: |
| 408 | PERROR("Invalid flags specified.\n"); |
| 409 | err = ME_ERRNO_INVALID_FLAGS; |
| 410 | } |
| 411 | spin_unlock_irqrestore(&instance->subdevice_lock, status); |
| 412 | |
| 413 | ME_SUBDEVICE_EXIT; |
| 414 | |
| 415 | return err; |
| 416 | } |
| 417 | |
| 418 | static int me8200_do_query_number_channels(me_subdevice_t * subdevice, |
| 419 | int *number) |
| 420 | { |
| 421 | PDEBUG("executed.\n"); |
| 422 | *number = 8; |
| 423 | return ME_ERRNO_SUCCESS; |
| 424 | } |
| 425 | |
| 426 | static int me8200_do_query_subdevice_type(me_subdevice_t * subdevice, |
| 427 | int *type, int *subtype) |
| 428 | { |
| 429 | PDEBUG("executed.\n"); |
| 430 | *type = ME_TYPE_DO; |
| 431 | *subtype = ME_SUBTYPE_SINGLE; |
| 432 | return ME_ERRNO_SUCCESS; |
| 433 | } |
| 434 | |
| 435 | static int me8200_do_query_subdevice_caps(me_subdevice_t * subdevice, int *caps) |
| 436 | { |
| 437 | PDEBUG("executed.\n"); |
| 438 | *caps = ME_CAPS_DIO_OVER_TEMP_IRQ; |
| 439 | return ME_ERRNO_SUCCESS; |
| 440 | } |
| 441 | |
| 442 | static void me8200_do_destructor(struct me_subdevice *subdevice) |
| 443 | { |
| 444 | me8200_do_subdevice_t *instance; |
| 445 | |
| 446 | PDEBUG("executed.\n"); |
| 447 | |
| 448 | instance = (me8200_do_subdevice_t *) subdevice; |
| 449 | |
| 450 | free_irq(instance->irq, (void *)instance); |
| 451 | me_subdevice_deinit(&instance->base); |
| 452 | kfree(instance); |
| 453 | } |
| 454 | |
| 455 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19) |
| 456 | static irqreturn_t me8200_do_isr(int irq, void *dev_id) |
| 457 | #else |
| 458 | static irqreturn_t me8200_do_isr(int irq, void *dev_id, struct pt_regs *regs) |
| 459 | #endif |
| 460 | { |
| 461 | me8200_do_subdevice_t *instance; |
| 462 | uint16_t ctrl; |
| 463 | uint8_t irq_status; |
| 464 | |
| 465 | instance = (me8200_do_subdevice_t *) dev_id; |
| 466 | |
| 467 | if (irq != instance->irq) { |
| 468 | PERROR("Incorrect interrupt num: %d.\n", irq); |
| 469 | return IRQ_NONE; |
| 470 | } |
| 471 | |
| 472 | irq_status = inb(instance->irq_status_reg); |
| 473 | if (! |
| 474 | (irq_status & |
| 475 | (ME8200_DO_IRQ_STATUS_BIT_ACTIVE << instance->do_idx))) { |
| 476 | PINFO |
| 477 | ("%ld Shared interrupt. %s(): idx=%d irq_status_reg=0x%04X\n", |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 478 | jiffies, __func__, instance->do_idx, irq_status); |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 479 | return IRQ_NONE; |
| 480 | } |
| 481 | |
| 482 | PDEBUG("executed.\n"); |
| 483 | |
| 484 | spin_lock(&instance->subdevice_lock); |
| 485 | instance->rised = 1; |
| 486 | instance->count++; |
| 487 | |
| 488 | spin_lock(instance->irq_mode_lock); |
| 489 | ctrl = inw(instance->irq_ctrl_reg); |
| 490 | ctrl |= ME8200_IRQ_MODE_BIT_CLEAR_POWER << instance->do_idx; |
| 491 | outw(ctrl, instance->irq_ctrl_reg); |
| 492 | PDEBUG_REG("irq_ctrl_reg outw(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 493 | instance->irq_ctrl_reg - instance->reg_base, ctrl); |
| 494 | ctrl &= ~(ME8200_IRQ_MODE_BIT_CLEAR_POWER << instance->do_idx); |
| 495 | outw(ctrl, instance->irq_ctrl_reg); |
| 496 | PDEBUG_REG("irq_ctrl_reg outw(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 497 | instance->irq_ctrl_reg - instance->reg_base, ctrl); |
| 498 | spin_unlock(instance->irq_mode_lock); |
| 499 | spin_unlock(&instance->subdevice_lock); |
| 500 | wake_up_interruptible_all(&instance->wait_queue); |
| 501 | |
| 502 | return IRQ_HANDLED; |
| 503 | } |
| 504 | |
| 505 | me8200_do_subdevice_t *me8200_do_constructor(uint32_t reg_base, |
| 506 | unsigned int do_idx, |
| 507 | int irq, |
| 508 | spinlock_t * irq_mode_lock) |
| 509 | { |
| 510 | me8200_do_subdevice_t *subdevice; |
| 511 | int err; |
| 512 | |
| 513 | PDEBUG("executed.\n"); |
| 514 | |
| 515 | /* Allocate memory for subdevice instance */ |
| 516 | subdevice = kmalloc(sizeof(me8200_do_subdevice_t), GFP_KERNEL); |
| 517 | |
| 518 | if (!subdevice) { |
| 519 | PERROR("Cannot get memory for subdevice instance.\n"); |
| 520 | return NULL; |
| 521 | } |
| 522 | |
| 523 | memset(subdevice, 0, sizeof(me8200_do_subdevice_t)); |
| 524 | |
| 525 | /* Initialize subdevice base class */ |
| 526 | err = me_subdevice_init(&subdevice->base); |
| 527 | |
| 528 | if (err) { |
| 529 | PERROR("Cannot initialize subdevice base class instance.\n"); |
| 530 | kfree(subdevice); |
| 531 | return NULL; |
| 532 | } |
| 533 | // Initialize spin locks. |
| 534 | spin_lock_init(&subdevice->subdevice_lock); |
| 535 | |
| 536 | subdevice->irq_mode_lock = irq_mode_lock; |
| 537 | |
| 538 | /* Save the index of the digital output */ |
| 539 | subdevice->do_idx = do_idx; |
| 540 | subdevice->irq = irq; |
| 541 | |
| 542 | /* Initialize the registers */ |
| 543 | if (do_idx == 0) { |
| 544 | subdevice->port_reg = reg_base + ME8200_DO_PORT_0_REG; |
| 545 | } else if (do_idx == 1) { |
| 546 | subdevice->port_reg = reg_base + ME8200_DO_PORT_1_REG; |
| 547 | } else { |
| 548 | PERROR("Wrong subdevice idx=%d.\n", do_idx); |
| 549 | kfree(subdevice); |
| 550 | return NULL; |
| 551 | } |
| 552 | subdevice->irq_ctrl_reg = reg_base + ME8200_IRQ_MODE_REG; |
| 553 | subdevice->irq_status_reg = reg_base + ME8200_DO_IRQ_STATUS_REG; |
| 554 | #ifdef MEDEBUG_DEBUG_REG |
| 555 | subdevice->reg_base = reg_base; |
| 556 | #endif |
| 557 | |
| 558 | /* Initialize the wait queue */ |
| 559 | init_waitqueue_head(&subdevice->wait_queue); |
| 560 | |
| 561 | /* Request the interrupt line */ |
| 562 | err = request_irq(irq, me8200_do_isr, |
| 563 | #ifdef IRQF_DISABLED |
| 564 | IRQF_DISABLED | IRQF_SHARED, |
| 565 | #else |
| 566 | SA_INTERRUPT | SA_SHIRQ, |
| 567 | #endif |
| 568 | ME8200_NAME, (void *)subdevice); |
| 569 | |
| 570 | if (err) { |
| 571 | PERROR("Cannot get interrupt line.\n"); |
| 572 | kfree(subdevice); |
| 573 | return NULL; |
| 574 | } |
| 575 | PINFO("Registered irq=%d.\n", irq); |
| 576 | |
| 577 | /* Overload base class methods. */ |
| 578 | subdevice->base.me_subdevice_io_irq_start = me8200_do_io_irq_start; |
| 579 | subdevice->base.me_subdevice_io_irq_wait = me8200_do_io_irq_wait; |
| 580 | subdevice->base.me_subdevice_io_irq_stop = me8200_do_io_irq_stop; |
| 581 | subdevice->base.me_subdevice_io_reset_subdevice = |
| 582 | me8200_do_io_reset_subdevice; |
| 583 | subdevice->base.me_subdevice_io_single_config = |
| 584 | me8200_do_io_single_config; |
| 585 | subdevice->base.me_subdevice_io_single_read = me8200_do_io_single_read; |
| 586 | subdevice->base.me_subdevice_io_single_write = |
| 587 | me8200_do_io_single_write; |
| 588 | subdevice->base.me_subdevice_query_number_channels = |
| 589 | me8200_do_query_number_channels; |
| 590 | subdevice->base.me_subdevice_query_subdevice_type = |
| 591 | me8200_do_query_subdevice_type; |
| 592 | subdevice->base.me_subdevice_query_subdevice_caps = |
| 593 | me8200_do_query_subdevice_caps; |
| 594 | subdevice->base.me_subdevice_destructor = me8200_do_destructor; |
| 595 | |
| 596 | subdevice->rised = 0; |
| 597 | subdevice->count = 0; |
| 598 | |
| 599 | return subdevice; |
| 600 | } |