| 1 | /* |
| 2 | * sch311x_wdt.c - Driver for the SCH311x Super-I/O chips |
| 3 | * integrated watchdog. |
| 4 | * |
| 5 | * (c) Copyright 2008 Wim Van Sebroeck <wim@iguana.be>. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * Neither Wim Van Sebroeck nor Iguana vzw. admit liability nor |
| 13 | * provide warranty for any of this software. This material is |
| 14 | * provided "AS-IS" and at no charge. |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | * Includes, defines, variables, module parameters, ... |
| 19 | */ |
| 20 | |
| 21 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 22 | |
| 23 | /* Includes */ |
| 24 | #include <linux/module.h> /* For module specific items */ |
| 25 | #include <linux/moduleparam.h> /* For new moduleparam's */ |
| 26 | #include <linux/types.h> /* For standard types (like size_t) */ |
| 27 | #include <linux/errno.h> /* For the -ENODEV/... values */ |
| 28 | #include <linux/kernel.h> /* For printk/... */ |
| 29 | #include <linux/miscdevice.h> /* For struct miscdevice */ |
| 30 | #include <linux/watchdog.h> /* For the watchdog specific items */ |
| 31 | #include <linux/init.h> /* For __init/__exit/... */ |
| 32 | #include <linux/fs.h> /* For file operations */ |
| 33 | #include <linux/platform_device.h> /* For platform_driver framework */ |
| 34 | #include <linux/ioport.h> /* For io-port access */ |
| 35 | #include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */ |
| 36 | #include <linux/uaccess.h> /* For copy_to_user/put_user/... */ |
| 37 | #include <linux/io.h> /* For inb/outb/... */ |
| 38 | |
| 39 | /* Module and version information */ |
| 40 | #define DRV_NAME "sch311x_wdt" |
| 41 | |
| 42 | /* Runtime registers */ |
| 43 | #define GP60 0x47 |
| 44 | #define WDT_TIME_OUT 0x65 |
| 45 | #define WDT_VAL 0x66 |
| 46 | #define WDT_CFG 0x67 |
| 47 | #define WDT_CTRL 0x68 |
| 48 | |
| 49 | /* internal variables */ |
| 50 | static unsigned long sch311x_wdt_is_open; |
| 51 | static char sch311x_wdt_expect_close; |
| 52 | static struct platform_device *sch311x_wdt_pdev; |
| 53 | |
| 54 | static int sch311x_ioports[] = { 0x2e, 0x4e, 0x162e, 0x164e, 0x00 }; |
| 55 | |
| 56 | static struct { /* The devices private data */ |
| 57 | /* the Runtime Register base address */ |
| 58 | unsigned short runtime_reg; |
| 59 | /* The card's boot status */ |
| 60 | int boot_status; |
| 61 | /* the lock for io operations */ |
| 62 | spinlock_t io_lock; |
| 63 | } sch311x_wdt_data; |
| 64 | |
| 65 | /* Module load parameters */ |
| 66 | static unsigned short force_id; |
| 67 | module_param(force_id, ushort, 0); |
| 68 | MODULE_PARM_DESC(force_id, "Override the detected device ID"); |
| 69 | |
| 70 | #define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */ |
| 71 | static int timeout = WATCHDOG_TIMEOUT; /* in seconds */ |
| 72 | module_param(timeout, int, 0); |
| 73 | MODULE_PARM_DESC(timeout, |
| 74 | "Watchdog timeout in seconds. 1<= timeout <=15300, default=" |
| 75 | __MODULE_STRING(WATCHDOG_TIMEOUT) "."); |
| 76 | |
| 77 | static bool nowayout = WATCHDOG_NOWAYOUT; |
| 78 | module_param(nowayout, bool, 0); |
| 79 | MODULE_PARM_DESC(nowayout, |
| 80 | "Watchdog cannot be stopped once started (default=" |
| 81 | __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); |
| 82 | |
| 83 | /* |
| 84 | * Super-IO functions |
| 85 | */ |
| 86 | |
| 87 | static inline void sch311x_sio_enter(int sio_config_port) |
| 88 | { |
| 89 | outb(0x55, sio_config_port); |
| 90 | } |
| 91 | |
| 92 | static inline void sch311x_sio_exit(int sio_config_port) |
| 93 | { |
| 94 | outb(0xaa, sio_config_port); |
| 95 | } |
| 96 | |
| 97 | static inline int sch311x_sio_inb(int sio_config_port, int reg) |
| 98 | { |
| 99 | outb(reg, sio_config_port); |
| 100 | return inb(sio_config_port + 1); |
| 101 | } |
| 102 | |
| 103 | static inline void sch311x_sio_outb(int sio_config_port, int reg, int val) |
| 104 | { |
| 105 | outb(reg, sio_config_port); |
| 106 | outb(val, sio_config_port + 1); |
| 107 | } |
| 108 | |
| 109 | /* |
| 110 | * Watchdog Operations |
| 111 | */ |
| 112 | |
| 113 | static void sch311x_wdt_set_timeout(int t) |
| 114 | { |
| 115 | unsigned char timeout_unit = 0x80; |
| 116 | |
| 117 | /* When new timeout is bigger then 255 seconds, we will use minutes */ |
| 118 | if (t > 255) { |
| 119 | timeout_unit = 0; |
| 120 | t /= 60; |
| 121 | } |
| 122 | |
| 123 | /* -- Watchdog Timeout -- |
| 124 | * Bit 0-6 (Reserved) |
| 125 | * Bit 7 WDT Time-out Value Units Select |
| 126 | * (0 = Minutes, 1 = Seconds) |
| 127 | */ |
| 128 | outb(timeout_unit, sch311x_wdt_data.runtime_reg + WDT_TIME_OUT); |
| 129 | |
| 130 | /* -- Watchdog Timer Time-out Value -- |
| 131 | * Bit 0-7 Binary coded units (0=Disabled, 1..255) |
| 132 | */ |
| 133 | outb(t, sch311x_wdt_data.runtime_reg + WDT_VAL); |
| 134 | } |
| 135 | |
| 136 | static void sch311x_wdt_start(void) |
| 137 | { |
| 138 | unsigned char t; |
| 139 | |
| 140 | spin_lock(&sch311x_wdt_data.io_lock); |
| 141 | |
| 142 | /* set watchdog's timeout */ |
| 143 | sch311x_wdt_set_timeout(timeout); |
| 144 | /* enable the watchdog */ |
| 145 | /* -- General Purpose I/O Bit 6.0 -- |
| 146 | * Bit 0, In/Out: 0 = Output, 1 = Input |
| 147 | * Bit 1, Polarity: 0 = No Invert, 1 = Invert |
| 148 | * Bit 2-3, Function select: 00 = GPI/O, 01 = LED1, 11 = WDT, |
| 149 | * 10 = Either Edge Triggered Intr.4 |
| 150 | * Bit 4-6 (Reserved) |
| 151 | * Bit 7, Output Type: 0 = Push Pull Bit, 1 = Open Drain |
| 152 | */ |
| 153 | t = inb(sch311x_wdt_data.runtime_reg + GP60); |
| 154 | outb((t & ~0x0d) | 0x0c, sch311x_wdt_data.runtime_reg + GP60); |
| 155 | |
| 156 | spin_unlock(&sch311x_wdt_data.io_lock); |
| 157 | |
| 158 | } |
| 159 | |
| 160 | static void sch311x_wdt_stop(void) |
| 161 | { |
| 162 | unsigned char t; |
| 163 | |
| 164 | spin_lock(&sch311x_wdt_data.io_lock); |
| 165 | |
| 166 | /* stop the watchdog */ |
| 167 | t = inb(sch311x_wdt_data.runtime_reg + GP60); |
| 168 | outb((t & ~0x0d) | 0x01, sch311x_wdt_data.runtime_reg + GP60); |
| 169 | /* disable timeout by setting it to 0 */ |
| 170 | sch311x_wdt_set_timeout(0); |
| 171 | |
| 172 | spin_unlock(&sch311x_wdt_data.io_lock); |
| 173 | } |
| 174 | |
| 175 | static void sch311x_wdt_keepalive(void) |
| 176 | { |
| 177 | spin_lock(&sch311x_wdt_data.io_lock); |
| 178 | sch311x_wdt_set_timeout(timeout); |
| 179 | spin_unlock(&sch311x_wdt_data.io_lock); |
| 180 | } |
| 181 | |
| 182 | static int sch311x_wdt_set_heartbeat(int t) |
| 183 | { |
| 184 | if (t < 1 || t > (255*60)) |
| 185 | return -EINVAL; |
| 186 | |
| 187 | /* When new timeout is bigger then 255 seconds, |
| 188 | * we will round up to minutes (with a max of 255) */ |
| 189 | if (t > 255) |
| 190 | t = (((t - 1) / 60) + 1) * 60; |
| 191 | |
| 192 | timeout = t; |
| 193 | return 0; |
| 194 | } |
| 195 | |
| 196 | static void sch311x_wdt_get_status(int *status) |
| 197 | { |
| 198 | unsigned char new_status; |
| 199 | |
| 200 | *status = 0; |
| 201 | |
| 202 | spin_lock(&sch311x_wdt_data.io_lock); |
| 203 | |
| 204 | /* -- Watchdog timer control -- |
| 205 | * Bit 0 Status Bit: 0 = Timer counting, 1 = Timeout occurred |
| 206 | * Bit 1 Reserved |
| 207 | * Bit 2 Force Timeout: 1 = Forces WD timeout event (self-cleaning) |
| 208 | * Bit 3 P20 Force Timeout enabled: |
| 209 | * 0 = P20 activity does not generate the WD timeout event |
| 210 | * 1 = P20 Allows rising edge of P20, from the keyboard |
| 211 | * controller, to force the WD timeout event. |
| 212 | * Bit 4-7 Reserved |
| 213 | */ |
| 214 | new_status = inb(sch311x_wdt_data.runtime_reg + WDT_CTRL); |
| 215 | if (new_status & 0x01) |
| 216 | *status |= WDIOF_CARDRESET; |
| 217 | |
| 218 | spin_unlock(&sch311x_wdt_data.io_lock); |
| 219 | } |
| 220 | |
| 221 | /* |
| 222 | * /dev/watchdog handling |
| 223 | */ |
| 224 | |
| 225 | static ssize_t sch311x_wdt_write(struct file *file, const char __user *buf, |
| 226 | size_t count, loff_t *ppos) |
| 227 | { |
| 228 | if (count) { |
| 229 | if (!nowayout) { |
| 230 | size_t i; |
| 231 | |
| 232 | sch311x_wdt_expect_close = 0; |
| 233 | |
| 234 | for (i = 0; i != count; i++) { |
| 235 | char c; |
| 236 | if (get_user(c, buf + i)) |
| 237 | return -EFAULT; |
| 238 | if (c == 'V') |
| 239 | sch311x_wdt_expect_close = 42; |
| 240 | } |
| 241 | } |
| 242 | sch311x_wdt_keepalive(); |
| 243 | } |
| 244 | return count; |
| 245 | } |
| 246 | |
| 247 | static long sch311x_wdt_ioctl(struct file *file, unsigned int cmd, |
| 248 | unsigned long arg) |
| 249 | { |
| 250 | int status; |
| 251 | int new_timeout; |
| 252 | void __user *argp = (void __user *)arg; |
| 253 | int __user *p = argp; |
| 254 | static const struct watchdog_info ident = { |
| 255 | .options = WDIOF_KEEPALIVEPING | |
| 256 | WDIOF_SETTIMEOUT | |
| 257 | WDIOF_MAGICCLOSE, |
| 258 | .firmware_version = 1, |
| 259 | .identity = DRV_NAME, |
| 260 | }; |
| 261 | |
| 262 | switch (cmd) { |
| 263 | case WDIOC_GETSUPPORT: |
| 264 | if (copy_to_user(argp, &ident, sizeof(ident))) |
| 265 | return -EFAULT; |
| 266 | break; |
| 267 | |
| 268 | case WDIOC_GETSTATUS: |
| 269 | { |
| 270 | sch311x_wdt_get_status(&status); |
| 271 | return put_user(status, p); |
| 272 | } |
| 273 | case WDIOC_GETBOOTSTATUS: |
| 274 | return put_user(sch311x_wdt_data.boot_status, p); |
| 275 | |
| 276 | case WDIOC_SETOPTIONS: |
| 277 | { |
| 278 | int options, retval = -EINVAL; |
| 279 | |
| 280 | if (get_user(options, p)) |
| 281 | return -EFAULT; |
| 282 | if (options & WDIOS_DISABLECARD) { |
| 283 | sch311x_wdt_stop(); |
| 284 | retval = 0; |
| 285 | } |
| 286 | if (options & WDIOS_ENABLECARD) { |
| 287 | sch311x_wdt_start(); |
| 288 | retval = 0; |
| 289 | } |
| 290 | return retval; |
| 291 | } |
| 292 | case WDIOC_KEEPALIVE: |
| 293 | sch311x_wdt_keepalive(); |
| 294 | break; |
| 295 | |
| 296 | case WDIOC_SETTIMEOUT: |
| 297 | if (get_user(new_timeout, p)) |
| 298 | return -EFAULT; |
| 299 | if (sch311x_wdt_set_heartbeat(new_timeout)) |
| 300 | return -EINVAL; |
| 301 | sch311x_wdt_keepalive(); |
| 302 | /* Fall */ |
| 303 | case WDIOC_GETTIMEOUT: |
| 304 | return put_user(timeout, p); |
| 305 | default: |
| 306 | return -ENOTTY; |
| 307 | } |
| 308 | return 0; |
| 309 | } |
| 310 | |
| 311 | static int sch311x_wdt_open(struct inode *inode, struct file *file) |
| 312 | { |
| 313 | if (test_and_set_bit(0, &sch311x_wdt_is_open)) |
| 314 | return -EBUSY; |
| 315 | /* |
| 316 | * Activate |
| 317 | */ |
| 318 | sch311x_wdt_start(); |
| 319 | return nonseekable_open(inode, file); |
| 320 | } |
| 321 | |
| 322 | static int sch311x_wdt_close(struct inode *inode, struct file *file) |
| 323 | { |
| 324 | if (sch311x_wdt_expect_close == 42) { |
| 325 | sch311x_wdt_stop(); |
| 326 | } else { |
| 327 | pr_crit("Unexpected close, not stopping watchdog!\n"); |
| 328 | sch311x_wdt_keepalive(); |
| 329 | } |
| 330 | clear_bit(0, &sch311x_wdt_is_open); |
| 331 | sch311x_wdt_expect_close = 0; |
| 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | /* |
| 336 | * Kernel Interfaces |
| 337 | */ |
| 338 | |
| 339 | static const struct file_operations sch311x_wdt_fops = { |
| 340 | .owner = THIS_MODULE, |
| 341 | .llseek = no_llseek, |
| 342 | .write = sch311x_wdt_write, |
| 343 | .unlocked_ioctl = sch311x_wdt_ioctl, |
| 344 | .open = sch311x_wdt_open, |
| 345 | .release = sch311x_wdt_close, |
| 346 | }; |
| 347 | |
| 348 | static struct miscdevice sch311x_wdt_miscdev = { |
| 349 | .minor = WATCHDOG_MINOR, |
| 350 | .name = "watchdog", |
| 351 | .fops = &sch311x_wdt_fops, |
| 352 | }; |
| 353 | |
| 354 | /* |
| 355 | * Init & exit routines |
| 356 | */ |
| 357 | |
| 358 | static int sch311x_wdt_probe(struct platform_device *pdev) |
| 359 | { |
| 360 | struct device *dev = &pdev->dev; |
| 361 | int err; |
| 362 | |
| 363 | spin_lock_init(&sch311x_wdt_data.io_lock); |
| 364 | |
| 365 | if (!request_region(sch311x_wdt_data.runtime_reg + GP60, 1, DRV_NAME)) { |
| 366 | dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n", |
| 367 | sch311x_wdt_data.runtime_reg + GP60, |
| 368 | sch311x_wdt_data.runtime_reg + GP60); |
| 369 | err = -EBUSY; |
| 370 | goto exit; |
| 371 | } |
| 372 | |
| 373 | if (!request_region(sch311x_wdt_data.runtime_reg + WDT_TIME_OUT, 4, |
| 374 | DRV_NAME)) { |
| 375 | dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n", |
| 376 | sch311x_wdt_data.runtime_reg + WDT_TIME_OUT, |
| 377 | sch311x_wdt_data.runtime_reg + WDT_CTRL); |
| 378 | err = -EBUSY; |
| 379 | goto exit_release_region; |
| 380 | } |
| 381 | |
| 382 | /* Make sure that the watchdog is not running */ |
| 383 | sch311x_wdt_stop(); |
| 384 | |
| 385 | /* Disable keyboard and mouse interaction and interrupt */ |
| 386 | /* -- Watchdog timer configuration -- |
| 387 | * Bit 0 Reserved |
| 388 | * Bit 1 Keyboard enable: 0* = No Reset, 1 = Reset WDT upon KBD Intr. |
| 389 | * Bit 2 Mouse enable: 0* = No Reset, 1 = Reset WDT upon Mouse Intr |
| 390 | * Bit 3 Reserved |
| 391 | * Bit 4-7 WDT Interrupt Mapping: (0000* = Disabled, |
| 392 | * 0001=IRQ1, 0010=(Invalid), 0011=IRQ3 to 1111=IRQ15) |
| 393 | */ |
| 394 | outb(0, sch311x_wdt_data.runtime_reg + WDT_CFG); |
| 395 | |
| 396 | /* Check that the heartbeat value is within it's range ; |
| 397 | * if not reset to the default */ |
| 398 | if (sch311x_wdt_set_heartbeat(timeout)) { |
| 399 | sch311x_wdt_set_heartbeat(WATCHDOG_TIMEOUT); |
| 400 | dev_info(dev, "timeout value must be 1<=x<=15300, using %d\n", |
| 401 | timeout); |
| 402 | } |
| 403 | |
| 404 | /* Get status at boot */ |
| 405 | sch311x_wdt_get_status(&sch311x_wdt_data.boot_status); |
| 406 | |
| 407 | sch311x_wdt_miscdev.parent = dev; |
| 408 | |
| 409 | err = misc_register(&sch311x_wdt_miscdev); |
| 410 | if (err != 0) { |
| 411 | dev_err(dev, "cannot register miscdev on minor=%d (err=%d)\n", |
| 412 | WATCHDOG_MINOR, err); |
| 413 | goto exit_release_region2; |
| 414 | } |
| 415 | |
| 416 | dev_info(dev, |
| 417 | "SMSC SCH311x WDT initialized. timeout=%d sec (nowayout=%d)\n", |
| 418 | timeout, nowayout); |
| 419 | |
| 420 | return 0; |
| 421 | |
| 422 | exit_release_region2: |
| 423 | release_region(sch311x_wdt_data.runtime_reg + WDT_TIME_OUT, 4); |
| 424 | exit_release_region: |
| 425 | release_region(sch311x_wdt_data.runtime_reg + GP60, 1); |
| 426 | sch311x_wdt_data.runtime_reg = 0; |
| 427 | exit: |
| 428 | return err; |
| 429 | } |
| 430 | |
| 431 | static int sch311x_wdt_remove(struct platform_device *pdev) |
| 432 | { |
| 433 | /* Stop the timer before we leave */ |
| 434 | if (!nowayout) |
| 435 | sch311x_wdt_stop(); |
| 436 | |
| 437 | /* Deregister */ |
| 438 | misc_deregister(&sch311x_wdt_miscdev); |
| 439 | release_region(sch311x_wdt_data.runtime_reg + WDT_TIME_OUT, 4); |
| 440 | release_region(sch311x_wdt_data.runtime_reg + GP60, 1); |
| 441 | sch311x_wdt_data.runtime_reg = 0; |
| 442 | return 0; |
| 443 | } |
| 444 | |
| 445 | static void sch311x_wdt_shutdown(struct platform_device *dev) |
| 446 | { |
| 447 | /* Turn the WDT off if we have a soft shutdown */ |
| 448 | sch311x_wdt_stop(); |
| 449 | } |
| 450 | |
| 451 | static struct platform_driver sch311x_wdt_driver = { |
| 452 | .probe = sch311x_wdt_probe, |
| 453 | .remove = sch311x_wdt_remove, |
| 454 | .shutdown = sch311x_wdt_shutdown, |
| 455 | .driver = { |
| 456 | .name = DRV_NAME, |
| 457 | }, |
| 458 | }; |
| 459 | |
| 460 | static int __init sch311x_detect(int sio_config_port, unsigned short *addr) |
| 461 | { |
| 462 | int err = 0, reg; |
| 463 | unsigned short base_addr; |
| 464 | unsigned char dev_id; |
| 465 | |
| 466 | sch311x_sio_enter(sio_config_port); |
| 467 | |
| 468 | /* Check device ID. We currently know about: |
| 469 | * SCH3112 (0x7c), SCH3114 (0x7d), and SCH3116 (0x7f). */ |
| 470 | reg = force_id ? force_id : sch311x_sio_inb(sio_config_port, 0x20); |
| 471 | if (!(reg == 0x7c || reg == 0x7d || reg == 0x7f)) { |
| 472 | err = -ENODEV; |
| 473 | goto exit; |
| 474 | } |
| 475 | dev_id = reg == 0x7c ? 2 : reg == 0x7d ? 4 : 6; |
| 476 | |
| 477 | /* Select logical device A (runtime registers) */ |
| 478 | sch311x_sio_outb(sio_config_port, 0x07, 0x0a); |
| 479 | |
| 480 | /* Check if Logical Device Register is currently active */ |
| 481 | if ((sch311x_sio_inb(sio_config_port, 0x30) & 0x01) == 0) |
| 482 | pr_info("Seems that LDN 0x0a is not active...\n"); |
| 483 | |
| 484 | /* Get the base address of the runtime registers */ |
| 485 | base_addr = (sch311x_sio_inb(sio_config_port, 0x60) << 8) | |
| 486 | sch311x_sio_inb(sio_config_port, 0x61); |
| 487 | if (!base_addr) { |
| 488 | pr_err("Base address not set\n"); |
| 489 | err = -ENODEV; |
| 490 | goto exit; |
| 491 | } |
| 492 | *addr = base_addr; |
| 493 | |
| 494 | pr_info("Found an SMSC SCH311%d chip at 0x%04x\n", dev_id, base_addr); |
| 495 | |
| 496 | exit: |
| 497 | sch311x_sio_exit(sio_config_port); |
| 498 | return err; |
| 499 | } |
| 500 | |
| 501 | static int __init sch311x_wdt_init(void) |
| 502 | { |
| 503 | int err, i, found = 0; |
| 504 | unsigned short addr = 0; |
| 505 | |
| 506 | for (i = 0; !found && sch311x_ioports[i]; i++) |
| 507 | if (sch311x_detect(sch311x_ioports[i], &addr) == 0) |
| 508 | found++; |
| 509 | |
| 510 | if (!found) |
| 511 | return -ENODEV; |
| 512 | |
| 513 | sch311x_wdt_data.runtime_reg = addr; |
| 514 | |
| 515 | err = platform_driver_register(&sch311x_wdt_driver); |
| 516 | if (err) |
| 517 | return err; |
| 518 | |
| 519 | sch311x_wdt_pdev = platform_device_register_simple(DRV_NAME, addr, |
| 520 | NULL, 0); |
| 521 | |
| 522 | if (IS_ERR(sch311x_wdt_pdev)) { |
| 523 | err = PTR_ERR(sch311x_wdt_pdev); |
| 524 | goto unreg_platform_driver; |
| 525 | } |
| 526 | |
| 527 | return 0; |
| 528 | |
| 529 | unreg_platform_driver: |
| 530 | platform_driver_unregister(&sch311x_wdt_driver); |
| 531 | return err; |
| 532 | } |
| 533 | |
| 534 | static void __exit sch311x_wdt_exit(void) |
| 535 | { |
| 536 | platform_device_unregister(sch311x_wdt_pdev); |
| 537 | platform_driver_unregister(&sch311x_wdt_driver); |
| 538 | } |
| 539 | |
| 540 | module_init(sch311x_wdt_init); |
| 541 | module_exit(sch311x_wdt_exit); |
| 542 | |
| 543 | MODULE_AUTHOR("Wim Van Sebroeck <wim@iguana.be>"); |
| 544 | MODULE_DESCRIPTION("SMSC SCH311x WatchDog Timer Driver"); |
| 545 | MODULE_LICENSE("GPL"); |