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d0173278 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
4c6e63bd WVS |
2 | /* |
3 | * sch311x_wdt.c - Driver for the SCH311x Super-I/O chips | |
4 | * integrated watchdog. | |
5 | * | |
6 | * (c) Copyright 2008 Wim Van Sebroeck <wim@iguana.be>. | |
7 | * | |
4c6e63bd WVS |
8 | * Neither Wim Van Sebroeck nor Iguana vzw. admit liability nor |
9 | * provide warranty for any of this software. This material is | |
10 | * provided "AS-IS" and at no charge. | |
11 | */ | |
12 | ||
13 | /* | |
14 | * Includes, defines, variables, module parameters, ... | |
15 | */ | |
16 | ||
27c766aa JP |
17 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
18 | ||
4c6e63bd WVS |
19 | /* Includes */ |
20 | #include <linux/module.h> /* For module specific items */ | |
21 | #include <linux/moduleparam.h> /* For new moduleparam's */ | |
22 | #include <linux/types.h> /* For standard types (like size_t) */ | |
23 | #include <linux/errno.h> /* For the -ENODEV/... values */ | |
24 | #include <linux/kernel.h> /* For printk/... */ | |
487722cf | 25 | #include <linux/miscdevice.h> /* For struct miscdevice */ |
4c6e63bd WVS |
26 | #include <linux/watchdog.h> /* For the watchdog specific items */ |
27 | #include <linux/init.h> /* For __init/__exit/... */ | |
28 | #include <linux/fs.h> /* For file operations */ | |
29 | #include <linux/platform_device.h> /* For platform_driver framework */ | |
30 | #include <linux/ioport.h> /* For io-port access */ | |
31 | #include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */ | |
32 | #include <linux/uaccess.h> /* For copy_to_user/put_user/... */ | |
33 | #include <linux/io.h> /* For inb/outb/... */ | |
34 | ||
35 | /* Module and version information */ | |
36 | #define DRV_NAME "sch311x_wdt" | |
4c6e63bd WVS |
37 | |
38 | /* Runtime registers */ | |
4c6e63bd WVS |
39 | #define GP60 0x47 |
40 | #define WDT_TIME_OUT 0x65 | |
41 | #define WDT_VAL 0x66 | |
42 | #define WDT_CFG 0x67 | |
43 | #define WDT_CTRL 0x68 | |
44 | ||
45 | /* internal variables */ | |
46 | static unsigned long sch311x_wdt_is_open; | |
47 | static char sch311x_wdt_expect_close; | |
48 | static struct platform_device *sch311x_wdt_pdev; | |
49 | ||
50 | static int sch311x_ioports[] = { 0x2e, 0x4e, 0x162e, 0x164e, 0x00 }; | |
51 | ||
52 | static struct { /* The devices private data */ | |
53 | /* the Runtime Register base address */ | |
54 | unsigned short runtime_reg; | |
55 | /* The card's boot status */ | |
56 | int boot_status; | |
57 | /* the lock for io operations */ | |
58 | spinlock_t io_lock; | |
59 | } sch311x_wdt_data; | |
60 | ||
61 | /* Module load parameters */ | |
62 | static unsigned short force_id; | |
63 | module_param(force_id, ushort, 0); | |
64 | MODULE_PARM_DESC(force_id, "Override the detected device ID"); | |
65 | ||
4c6e63bd WVS |
66 | #define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */ |
67 | static int timeout = WATCHDOG_TIMEOUT; /* in seconds */ | |
68 | module_param(timeout, int, 0); | |
69 | MODULE_PARM_DESC(timeout, | |
70 | "Watchdog timeout in seconds. 1<= timeout <=15300, default=" | |
71 | __MODULE_STRING(WATCHDOG_TIMEOUT) "."); | |
72 | ||
86a1e189 WVS |
73 | static bool nowayout = WATCHDOG_NOWAYOUT; |
74 | module_param(nowayout, bool, 0); | |
4c6e63bd WVS |
75 | MODULE_PARM_DESC(nowayout, |
76 | "Watchdog cannot be stopped once started (default=" | |
77 | __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); | |
78 | ||
79 | /* | |
80 | * Super-IO functions | |
81 | */ | |
82 | ||
83 | static inline void sch311x_sio_enter(int sio_config_port) | |
84 | { | |
85 | outb(0x55, sio_config_port); | |
86 | } | |
87 | ||
88 | static inline void sch311x_sio_exit(int sio_config_port) | |
89 | { | |
90 | outb(0xaa, sio_config_port); | |
91 | } | |
92 | ||
93 | static inline int sch311x_sio_inb(int sio_config_port, int reg) | |
94 | { | |
95 | outb(reg, sio_config_port); | |
96 | return inb(sio_config_port + 1); | |
97 | } | |
98 | ||
99 | static inline void sch311x_sio_outb(int sio_config_port, int reg, int val) | |
100 | { | |
101 | outb(reg, sio_config_port); | |
102 | outb(val, sio_config_port + 1); | |
103 | } | |
104 | ||
105 | /* | |
106 | * Watchdog Operations | |
107 | */ | |
108 | ||
109 | static void sch311x_wdt_set_timeout(int t) | |
110 | { | |
111 | unsigned char timeout_unit = 0x80; | |
112 | ||
113 | /* When new timeout is bigger then 255 seconds, we will use minutes */ | |
114 | if (t > 255) { | |
115 | timeout_unit = 0; | |
116 | t /= 60; | |
117 | } | |
118 | ||
119 | /* -- Watchdog Timeout -- | |
120 | * Bit 0-6 (Reserved) | |
121 | * Bit 7 WDT Time-out Value Units Select | |
122 | * (0 = Minutes, 1 = Seconds) | |
123 | */ | |
124 | outb(timeout_unit, sch311x_wdt_data.runtime_reg + WDT_TIME_OUT); | |
125 | ||
126 | /* -- Watchdog Timer Time-out Value -- | |
127 | * Bit 0-7 Binary coded units (0=Disabled, 1..255) | |
128 | */ | |
129 | outb(t, sch311x_wdt_data.runtime_reg + WDT_VAL); | |
130 | } | |
131 | ||
132 | static void sch311x_wdt_start(void) | |
133 | { | |
7732c6b9 WVS |
134 | unsigned char t; |
135 | ||
4c6e63bd WVS |
136 | spin_lock(&sch311x_wdt_data.io_lock); |
137 | ||
138 | /* set watchdog's timeout */ | |
139 | sch311x_wdt_set_timeout(timeout); | |
140 | /* enable the watchdog */ | |
141 | /* -- General Purpose I/O Bit 6.0 -- | |
142 | * Bit 0, In/Out: 0 = Output, 1 = Input | |
143 | * Bit 1, Polarity: 0 = No Invert, 1 = Invert | |
144 | * Bit 2-3, Function select: 00 = GPI/O, 01 = LED1, 11 = WDT, | |
145 | * 10 = Either Edge Triggered Intr.4 | |
146 | * Bit 4-6 (Reserved) | |
147 | * Bit 7, Output Type: 0 = Push Pull Bit, 1 = Open Drain | |
148 | */ | |
7732c6b9 WVS |
149 | t = inb(sch311x_wdt_data.runtime_reg + GP60); |
150 | outb((t & ~0x0d) | 0x0c, sch311x_wdt_data.runtime_reg + GP60); | |
4c6e63bd WVS |
151 | |
152 | spin_unlock(&sch311x_wdt_data.io_lock); | |
153 | ||
154 | } | |
155 | ||
156 | static void sch311x_wdt_stop(void) | |
157 | { | |
7732c6b9 WVS |
158 | unsigned char t; |
159 | ||
4c6e63bd WVS |
160 | spin_lock(&sch311x_wdt_data.io_lock); |
161 | ||
162 | /* stop the watchdog */ | |
7732c6b9 WVS |
163 | t = inb(sch311x_wdt_data.runtime_reg + GP60); |
164 | outb((t & ~0x0d) | 0x01, sch311x_wdt_data.runtime_reg + GP60); | |
4c6e63bd WVS |
165 | /* disable timeout by setting it to 0 */ |
166 | sch311x_wdt_set_timeout(0); | |
167 | ||
168 | spin_unlock(&sch311x_wdt_data.io_lock); | |
169 | } | |
170 | ||
171 | static void sch311x_wdt_keepalive(void) | |
172 | { | |
173 | spin_lock(&sch311x_wdt_data.io_lock); | |
174 | sch311x_wdt_set_timeout(timeout); | |
175 | spin_unlock(&sch311x_wdt_data.io_lock); | |
176 | } | |
177 | ||
178 | static int sch311x_wdt_set_heartbeat(int t) | |
179 | { | |
180 | if (t < 1 || t > (255*60)) | |
181 | return -EINVAL; | |
182 | ||
183 | /* When new timeout is bigger then 255 seconds, | |
184 | * we will round up to minutes (with a max of 255) */ | |
185 | if (t > 255) | |
186 | t = (((t - 1) / 60) + 1) * 60; | |
187 | ||
188 | timeout = t; | |
189 | return 0; | |
190 | } | |
191 | ||
192 | static void sch311x_wdt_get_status(int *status) | |
193 | { | |
194 | unsigned char new_status; | |
195 | ||
196 | *status = 0; | |
197 | ||
198 | spin_lock(&sch311x_wdt_data.io_lock); | |
199 | ||
200 | /* -- Watchdog timer control -- | |
25985edc | 201 | * Bit 0 Status Bit: 0 = Timer counting, 1 = Timeout occurred |
4c6e63bd WVS |
202 | * Bit 1 Reserved |
203 | * Bit 2 Force Timeout: 1 = Forces WD timeout event (self-cleaning) | |
204 | * Bit 3 P20 Force Timeout enabled: | |
205 | * 0 = P20 activity does not generate the WD timeout event | |
206 | * 1 = P20 Allows rising edge of P20, from the keyboard | |
207 | * controller, to force the WD timeout event. | |
208 | * Bit 4-7 Reserved | |
209 | */ | |
210 | new_status = inb(sch311x_wdt_data.runtime_reg + WDT_CTRL); | |
211 | if (new_status & 0x01) | |
212 | *status |= WDIOF_CARDRESET; | |
213 | ||
214 | spin_unlock(&sch311x_wdt_data.io_lock); | |
215 | } | |
216 | ||
217 | /* | |
218 | * /dev/watchdog handling | |
219 | */ | |
220 | ||
221 | static ssize_t sch311x_wdt_write(struct file *file, const char __user *buf, | |
222 | size_t count, loff_t *ppos) | |
223 | { | |
224 | if (count) { | |
225 | if (!nowayout) { | |
226 | size_t i; | |
227 | ||
228 | sch311x_wdt_expect_close = 0; | |
229 | ||
230 | for (i = 0; i != count; i++) { | |
231 | char c; | |
232 | if (get_user(c, buf + i)) | |
233 | return -EFAULT; | |
234 | if (c == 'V') | |
235 | sch311x_wdt_expect_close = 42; | |
236 | } | |
237 | } | |
238 | sch311x_wdt_keepalive(); | |
239 | } | |
240 | return count; | |
241 | } | |
242 | ||
243 | static long sch311x_wdt_ioctl(struct file *file, unsigned int cmd, | |
244 | unsigned long arg) | |
245 | { | |
246 | int status; | |
247 | int new_timeout; | |
248 | void __user *argp = (void __user *)arg; | |
249 | int __user *p = argp; | |
42747d71 | 250 | static const struct watchdog_info ident = { |
4c6e63bd WVS |
251 | .options = WDIOF_KEEPALIVEPING | |
252 | WDIOF_SETTIMEOUT | | |
253 | WDIOF_MAGICCLOSE, | |
254 | .firmware_version = 1, | |
255 | .identity = DRV_NAME, | |
256 | }; | |
257 | ||
258 | switch (cmd) { | |
259 | case WDIOC_GETSUPPORT: | |
260 | if (copy_to_user(argp, &ident, sizeof(ident))) | |
261 | return -EFAULT; | |
262 | break; | |
263 | ||
264 | case WDIOC_GETSTATUS: | |
265 | { | |
266 | sch311x_wdt_get_status(&status); | |
267 | return put_user(status, p); | |
268 | } | |
269 | case WDIOC_GETBOOTSTATUS: | |
270 | return put_user(sch311x_wdt_data.boot_status, p); | |
271 | ||
272 | case WDIOC_SETOPTIONS: | |
273 | { | |
274 | int options, retval = -EINVAL; | |
275 | ||
276 | if (get_user(options, p)) | |
277 | return -EFAULT; | |
278 | if (options & WDIOS_DISABLECARD) { | |
279 | sch311x_wdt_stop(); | |
280 | retval = 0; | |
281 | } | |
282 | if (options & WDIOS_ENABLECARD) { | |
283 | sch311x_wdt_start(); | |
284 | retval = 0; | |
285 | } | |
286 | return retval; | |
287 | } | |
288 | case WDIOC_KEEPALIVE: | |
289 | sch311x_wdt_keepalive(); | |
290 | break; | |
291 | ||
292 | case WDIOC_SETTIMEOUT: | |
293 | if (get_user(new_timeout, p)) | |
294 | return -EFAULT; | |
295 | if (sch311x_wdt_set_heartbeat(new_timeout)) | |
296 | return -EINVAL; | |
297 | sch311x_wdt_keepalive(); | |
a03cc689 | 298 | /* Fall through */ |
4c6e63bd WVS |
299 | case WDIOC_GETTIMEOUT: |
300 | return put_user(timeout, p); | |
301 | default: | |
302 | return -ENOTTY; | |
303 | } | |
304 | return 0; | |
305 | } | |
306 | ||
307 | static int sch311x_wdt_open(struct inode *inode, struct file *file) | |
308 | { | |
309 | if (test_and_set_bit(0, &sch311x_wdt_is_open)) | |
310 | return -EBUSY; | |
311 | /* | |
312 | * Activate | |
313 | */ | |
314 | sch311x_wdt_start(); | |
c5bf68fe | 315 | return stream_open(inode, file); |
4c6e63bd WVS |
316 | } |
317 | ||
318 | static int sch311x_wdt_close(struct inode *inode, struct file *file) | |
319 | { | |
320 | if (sch311x_wdt_expect_close == 42) { | |
321 | sch311x_wdt_stop(); | |
322 | } else { | |
27c766aa | 323 | pr_crit("Unexpected close, not stopping watchdog!\n"); |
4c6e63bd WVS |
324 | sch311x_wdt_keepalive(); |
325 | } | |
326 | clear_bit(0, &sch311x_wdt_is_open); | |
327 | sch311x_wdt_expect_close = 0; | |
328 | return 0; | |
329 | } | |
330 | ||
331 | /* | |
332 | * Kernel Interfaces | |
333 | */ | |
334 | ||
335 | static const struct file_operations sch311x_wdt_fops = { | |
336 | .owner = THIS_MODULE, | |
337 | .llseek = no_llseek, | |
338 | .write = sch311x_wdt_write, | |
339 | .unlocked_ioctl = sch311x_wdt_ioctl, | |
340 | .open = sch311x_wdt_open, | |
341 | .release = sch311x_wdt_close, | |
342 | }; | |
343 | ||
344 | static struct miscdevice sch311x_wdt_miscdev = { | |
345 | .minor = WATCHDOG_MINOR, | |
346 | .name = "watchdog", | |
347 | .fops = &sch311x_wdt_fops, | |
348 | }; | |
349 | ||
350 | /* | |
351 | * Init & exit routines | |
352 | */ | |
353 | ||
2d991a16 | 354 | static int sch311x_wdt_probe(struct platform_device *pdev) |
4c6e63bd WVS |
355 | { |
356 | struct device *dev = &pdev->dev; | |
4c6e63bd WVS |
357 | int err; |
358 | ||
359 | spin_lock_init(&sch311x_wdt_data.io_lock); | |
360 | ||
4c6e63bd WVS |
361 | if (!request_region(sch311x_wdt_data.runtime_reg + GP60, 1, DRV_NAME)) { |
362 | dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n", | |
363 | sch311x_wdt_data.runtime_reg + GP60, | |
364 | sch311x_wdt_data.runtime_reg + GP60); | |
365 | err = -EBUSY; | |
8f90a3ae | 366 | goto exit; |
4c6e63bd WVS |
367 | } |
368 | ||
369 | if (!request_region(sch311x_wdt_data.runtime_reg + WDT_TIME_OUT, 4, | |
370 | DRV_NAME)) { | |
371 | dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n", | |
372 | sch311x_wdt_data.runtime_reg + WDT_TIME_OUT, | |
373 | sch311x_wdt_data.runtime_reg + WDT_CTRL); | |
374 | err = -EBUSY; | |
8f90a3ae | 375 | goto exit_release_region; |
4c6e63bd WVS |
376 | } |
377 | ||
378 | /* Make sure that the watchdog is not running */ | |
379 | sch311x_wdt_stop(); | |
380 | ||
381 | /* Disable keyboard and mouse interaction and interrupt */ | |
382 | /* -- Watchdog timer configuration -- | |
383 | * Bit 0 Reserved | |
384 | * Bit 1 Keyboard enable: 0* = No Reset, 1 = Reset WDT upon KBD Intr. | |
385 | * Bit 2 Mouse enable: 0* = No Reset, 1 = Reset WDT upon Mouse Intr | |
386 | * Bit 3 Reserved | |
387 | * Bit 4-7 WDT Interrupt Mapping: (0000* = Disabled, | |
388 | * 0001=IRQ1, 0010=(Invalid), 0011=IRQ3 to 1111=IRQ15) | |
389 | */ | |
390 | outb(0, sch311x_wdt_data.runtime_reg + WDT_CFG); | |
391 | ||
392 | /* Check that the heartbeat value is within it's range ; | |
393 | * if not reset to the default */ | |
394 | if (sch311x_wdt_set_heartbeat(timeout)) { | |
395 | sch311x_wdt_set_heartbeat(WATCHDOG_TIMEOUT); | |
396 | dev_info(dev, "timeout value must be 1<=x<=15300, using %d\n", | |
397 | timeout); | |
398 | } | |
399 | ||
400 | /* Get status at boot */ | |
401 | sch311x_wdt_get_status(&sch311x_wdt_data.boot_status); | |
402 | ||
4c4b638e WVS |
403 | sch311x_wdt_miscdev.parent = dev; |
404 | ||
4c6e63bd WVS |
405 | err = misc_register(&sch311x_wdt_miscdev); |
406 | if (err != 0) { | |
407 | dev_err(dev, "cannot register miscdev on minor=%d (err=%d)\n", | |
408 | WATCHDOG_MINOR, err); | |
8f90a3ae | 409 | goto exit_release_region2; |
4c6e63bd WVS |
410 | } |
411 | ||
4c6e63bd WVS |
412 | dev_info(dev, |
413 | "SMSC SCH311x WDT initialized. timeout=%d sec (nowayout=%d)\n", | |
414 | timeout, nowayout); | |
415 | ||
416 | return 0; | |
417 | ||
4c6e63bd | 418 | exit_release_region2: |
8f90a3ae | 419 | release_region(sch311x_wdt_data.runtime_reg + WDT_TIME_OUT, 4); |
4c6e63bd | 420 | exit_release_region: |
8f90a3ae | 421 | release_region(sch311x_wdt_data.runtime_reg + GP60, 1); |
4c6e63bd WVS |
422 | sch311x_wdt_data.runtime_reg = 0; |
423 | exit: | |
424 | return err; | |
425 | } | |
426 | ||
4b12b896 | 427 | static int sch311x_wdt_remove(struct platform_device *pdev) |
4c6e63bd WVS |
428 | { |
429 | /* Stop the timer before we leave */ | |
430 | if (!nowayout) | |
431 | sch311x_wdt_stop(); | |
432 | ||
433 | /* Deregister */ | |
434 | misc_deregister(&sch311x_wdt_miscdev); | |
435 | release_region(sch311x_wdt_data.runtime_reg + WDT_TIME_OUT, 4); | |
436 | release_region(sch311x_wdt_data.runtime_reg + GP60, 1); | |
4c6e63bd WVS |
437 | sch311x_wdt_data.runtime_reg = 0; |
438 | return 0; | |
439 | } | |
440 | ||
441 | static void sch311x_wdt_shutdown(struct platform_device *dev) | |
442 | { | |
443 | /* Turn the WDT off if we have a soft shutdown */ | |
444 | sch311x_wdt_stop(); | |
445 | } | |
446 | ||
4c6e63bd WVS |
447 | static struct platform_driver sch311x_wdt_driver = { |
448 | .probe = sch311x_wdt_probe, | |
82268714 | 449 | .remove = sch311x_wdt_remove, |
4c6e63bd | 450 | .shutdown = sch311x_wdt_shutdown, |
4c6e63bd | 451 | .driver = { |
4c6e63bd WVS |
452 | .name = DRV_NAME, |
453 | }, | |
454 | }; | |
455 | ||
456 | static int __init sch311x_detect(int sio_config_port, unsigned short *addr) | |
457 | { | |
458 | int err = 0, reg; | |
459 | unsigned short base_addr; | |
460 | unsigned char dev_id; | |
461 | ||
462 | sch311x_sio_enter(sio_config_port); | |
463 | ||
464 | /* Check device ID. We currently know about: | |
465 | * SCH3112 (0x7c), SCH3114 (0x7d), and SCH3116 (0x7f). */ | |
466 | reg = force_id ? force_id : sch311x_sio_inb(sio_config_port, 0x20); | |
467 | if (!(reg == 0x7c || reg == 0x7d || reg == 0x7f)) { | |
468 | err = -ENODEV; | |
469 | goto exit; | |
470 | } | |
471 | dev_id = reg == 0x7c ? 2 : reg == 0x7d ? 4 : 6; | |
472 | ||
473 | /* Select logical device A (runtime registers) */ | |
474 | sch311x_sio_outb(sio_config_port, 0x07, 0x0a); | |
475 | ||
476 | /* Check if Logical Device Register is currently active */ | |
6899a8e1 | 477 | if ((sch311x_sio_inb(sio_config_port, 0x30) & 0x01) == 0) |
27c766aa | 478 | pr_info("Seems that LDN 0x0a is not active...\n"); |
4c6e63bd WVS |
479 | |
480 | /* Get the base address of the runtime registers */ | |
481 | base_addr = (sch311x_sio_inb(sio_config_port, 0x60) << 8) | | |
482 | sch311x_sio_inb(sio_config_port, 0x61); | |
483 | if (!base_addr) { | |
27c766aa | 484 | pr_err("Base address not set\n"); |
4c6e63bd WVS |
485 | err = -ENODEV; |
486 | goto exit; | |
487 | } | |
488 | *addr = base_addr; | |
489 | ||
27c766aa | 490 | pr_info("Found an SMSC SCH311%d chip at 0x%04x\n", dev_id, base_addr); |
4c6e63bd WVS |
491 | |
492 | exit: | |
493 | sch311x_sio_exit(sio_config_port); | |
494 | return err; | |
495 | } | |
496 | ||
497 | static int __init sch311x_wdt_init(void) | |
498 | { | |
499 | int err, i, found = 0; | |
500 | unsigned short addr = 0; | |
501 | ||
502 | for (i = 0; !found && sch311x_ioports[i]; i++) | |
503 | if (sch311x_detect(sch311x_ioports[i], &addr) == 0) | |
504 | found++; | |
505 | ||
506 | if (!found) | |
507 | return -ENODEV; | |
508 | ||
509 | sch311x_wdt_data.runtime_reg = addr; | |
510 | ||
511 | err = platform_driver_register(&sch311x_wdt_driver); | |
512 | if (err) | |
513 | return err; | |
514 | ||
515 | sch311x_wdt_pdev = platform_device_register_simple(DRV_NAME, addr, | |
516 | NULL, 0); | |
517 | ||
518 | if (IS_ERR(sch311x_wdt_pdev)) { | |
519 | err = PTR_ERR(sch311x_wdt_pdev); | |
520 | goto unreg_platform_driver; | |
521 | } | |
522 | ||
523 | return 0; | |
524 | ||
525 | unreg_platform_driver: | |
526 | platform_driver_unregister(&sch311x_wdt_driver); | |
527 | return err; | |
528 | } | |
529 | ||
530 | static void __exit sch311x_wdt_exit(void) | |
531 | { | |
532 | platform_device_unregister(sch311x_wdt_pdev); | |
533 | platform_driver_unregister(&sch311x_wdt_driver); | |
534 | } | |
535 | ||
536 | module_init(sch311x_wdt_init); | |
537 | module_exit(sch311x_wdt_exit); | |
538 | ||
539 | MODULE_AUTHOR("Wim Van Sebroeck <wim@iguana.be>"); | |
540 | MODULE_DESCRIPTION("SMSC SCH311x WatchDog Timer Driver"); | |
541 | MODULE_LICENSE("GPL"); |