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Commit | Line | Data |
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9570ef20 MD |
1 | /* |
2 | * SuperH Timer Support - TMU | |
3 | * | |
4 | * Copyright (C) 2009 Magnus Damm | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
19 | ||
20 | #include <linux/init.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <linux/spinlock.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/ioport.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/io.h> | |
27 | #include <linux/clk.h> | |
28 | #include <linux/irq.h> | |
29 | #include <linux/err.h> | |
30 | #include <linux/clocksource.h> | |
31 | #include <linux/clockchips.h> | |
46a12f74 | 32 | #include <linux/sh_timer.h> |
5a0e3ad6 | 33 | #include <linux/slab.h> |
7deeab5d | 34 | #include <linux/module.h> |
2ee619f9 | 35 | #include <linux/pm_domain.h> |
eaa49a8c | 36 | #include <linux/pm_runtime.h> |
9570ef20 MD |
37 | |
38 | struct sh_tmu_priv { | |
39 | void __iomem *mapbase; | |
40 | struct clk *clk; | |
41 | struct irqaction irqaction; | |
42 | struct platform_device *pdev; | |
43 | unsigned long rate; | |
44 | unsigned long periodic; | |
45 | struct clock_event_device ced; | |
46 | struct clocksource cs; | |
eaa49a8c | 47 | bool cs_enabled; |
61a53bfa | 48 | unsigned int enable_count; |
9570ef20 MD |
49 | }; |
50 | ||
c2225a57 | 51 | static DEFINE_RAW_SPINLOCK(sh_tmu_lock); |
9570ef20 MD |
52 | |
53 | #define TSTR -1 /* shared register */ | |
54 | #define TCOR 0 /* channel register */ | |
55 | #define TCNT 1 /* channel register */ | |
56 | #define TCR 2 /* channel register */ | |
57 | ||
58 | static inline unsigned long sh_tmu_read(struct sh_tmu_priv *p, int reg_nr) | |
59 | { | |
46a12f74 | 60 | struct sh_timer_config *cfg = p->pdev->dev.platform_data; |
9570ef20 MD |
61 | void __iomem *base = p->mapbase; |
62 | unsigned long offs; | |
63 | ||
64 | if (reg_nr == TSTR) | |
65 | return ioread8(base - cfg->channel_offset); | |
66 | ||
67 | offs = reg_nr << 2; | |
68 | ||
69 | if (reg_nr == TCR) | |
70 | return ioread16(base + offs); | |
71 | else | |
72 | return ioread32(base + offs); | |
73 | } | |
74 | ||
75 | static inline void sh_tmu_write(struct sh_tmu_priv *p, int reg_nr, | |
76 | unsigned long value) | |
77 | { | |
46a12f74 | 78 | struct sh_timer_config *cfg = p->pdev->dev.platform_data; |
9570ef20 MD |
79 | void __iomem *base = p->mapbase; |
80 | unsigned long offs; | |
81 | ||
82 | if (reg_nr == TSTR) { | |
83 | iowrite8(value, base - cfg->channel_offset); | |
84 | return; | |
85 | } | |
86 | ||
87 | offs = reg_nr << 2; | |
88 | ||
89 | if (reg_nr == TCR) | |
90 | iowrite16(value, base + offs); | |
91 | else | |
92 | iowrite32(value, base + offs); | |
93 | } | |
94 | ||
95 | static void sh_tmu_start_stop_ch(struct sh_tmu_priv *p, int start) | |
96 | { | |
46a12f74 | 97 | struct sh_timer_config *cfg = p->pdev->dev.platform_data; |
9570ef20 MD |
98 | unsigned long flags, value; |
99 | ||
100 | /* start stop register shared by multiple timer channels */ | |
c2225a57 | 101 | raw_spin_lock_irqsave(&sh_tmu_lock, flags); |
9570ef20 MD |
102 | value = sh_tmu_read(p, TSTR); |
103 | ||
104 | if (start) | |
105 | value |= 1 << cfg->timer_bit; | |
106 | else | |
107 | value &= ~(1 << cfg->timer_bit); | |
108 | ||
109 | sh_tmu_write(p, TSTR, value); | |
c2225a57 | 110 | raw_spin_unlock_irqrestore(&sh_tmu_lock, flags); |
9570ef20 MD |
111 | } |
112 | ||
61a53bfa | 113 | static int __sh_tmu_enable(struct sh_tmu_priv *p) |
9570ef20 | 114 | { |
9570ef20 MD |
115 | int ret; |
116 | ||
d4905ce3 | 117 | /* enable clock */ |
9570ef20 MD |
118 | ret = clk_enable(p->clk); |
119 | if (ret) { | |
214a607a | 120 | dev_err(&p->pdev->dev, "cannot enable clock\n"); |
9570ef20 MD |
121 | return ret; |
122 | } | |
123 | ||
124 | /* make sure channel is disabled */ | |
125 | sh_tmu_start_stop_ch(p, 0); | |
126 | ||
127 | /* maximum timeout */ | |
128 | sh_tmu_write(p, TCOR, 0xffffffff); | |
129 | sh_tmu_write(p, TCNT, 0xffffffff); | |
130 | ||
131 | /* configure channel to parent clock / 4, irq off */ | |
132 | p->rate = clk_get_rate(p->clk) / 4; | |
133 | sh_tmu_write(p, TCR, 0x0000); | |
134 | ||
135 | /* enable channel */ | |
136 | sh_tmu_start_stop_ch(p, 1); | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
61a53bfa RW |
141 | static int sh_tmu_enable(struct sh_tmu_priv *p) |
142 | { | |
143 | if (p->enable_count++ > 0) | |
144 | return 0; | |
145 | ||
146 | pm_runtime_get_sync(&p->pdev->dev); | |
147 | dev_pm_syscore_device(&p->pdev->dev, true); | |
148 | ||
149 | return __sh_tmu_enable(p); | |
150 | } | |
151 | ||
152 | static void __sh_tmu_disable(struct sh_tmu_priv *p) | |
9570ef20 MD |
153 | { |
154 | /* disable channel */ | |
155 | sh_tmu_start_stop_ch(p, 0); | |
156 | ||
be890a1a MD |
157 | /* disable interrupts in TMU block */ |
158 | sh_tmu_write(p, TCR, 0x0000); | |
159 | ||
d4905ce3 | 160 | /* stop clock */ |
9570ef20 MD |
161 | clk_disable(p->clk); |
162 | } | |
163 | ||
61a53bfa RW |
164 | static void sh_tmu_disable(struct sh_tmu_priv *p) |
165 | { | |
166 | if (WARN_ON(p->enable_count == 0)) | |
167 | return; | |
168 | ||
169 | if (--p->enable_count > 0) | |
170 | return; | |
171 | ||
172 | __sh_tmu_disable(p); | |
173 | ||
174 | dev_pm_syscore_device(&p->pdev->dev, false); | |
175 | pm_runtime_put(&p->pdev->dev); | |
176 | } | |
177 | ||
9570ef20 MD |
178 | static void sh_tmu_set_next(struct sh_tmu_priv *p, unsigned long delta, |
179 | int periodic) | |
180 | { | |
181 | /* stop timer */ | |
182 | sh_tmu_start_stop_ch(p, 0); | |
183 | ||
184 | /* acknowledge interrupt */ | |
185 | sh_tmu_read(p, TCR); | |
186 | ||
187 | /* enable interrupt */ | |
188 | sh_tmu_write(p, TCR, 0x0020); | |
189 | ||
190 | /* reload delta value in case of periodic timer */ | |
191 | if (periodic) | |
192 | sh_tmu_write(p, TCOR, delta); | |
193 | else | |
6f4b67b8 | 194 | sh_tmu_write(p, TCOR, 0xffffffff); |
9570ef20 MD |
195 | |
196 | sh_tmu_write(p, TCNT, delta); | |
197 | ||
198 | /* start timer */ | |
199 | sh_tmu_start_stop_ch(p, 1); | |
200 | } | |
201 | ||
202 | static irqreturn_t sh_tmu_interrupt(int irq, void *dev_id) | |
203 | { | |
204 | struct sh_tmu_priv *p = dev_id; | |
205 | ||
206 | /* disable or acknowledge interrupt */ | |
207 | if (p->ced.mode == CLOCK_EVT_MODE_ONESHOT) | |
208 | sh_tmu_write(p, TCR, 0x0000); | |
209 | else | |
210 | sh_tmu_write(p, TCR, 0x0020); | |
211 | ||
212 | /* notify clockevent layer */ | |
213 | p->ced.event_handler(&p->ced); | |
214 | return IRQ_HANDLED; | |
215 | } | |
216 | ||
217 | static struct sh_tmu_priv *cs_to_sh_tmu(struct clocksource *cs) | |
218 | { | |
219 | return container_of(cs, struct sh_tmu_priv, cs); | |
220 | } | |
221 | ||
222 | static cycle_t sh_tmu_clocksource_read(struct clocksource *cs) | |
223 | { | |
224 | struct sh_tmu_priv *p = cs_to_sh_tmu(cs); | |
225 | ||
226 | return sh_tmu_read(p, TCNT) ^ 0xffffffff; | |
227 | } | |
228 | ||
229 | static int sh_tmu_clocksource_enable(struct clocksource *cs) | |
230 | { | |
231 | struct sh_tmu_priv *p = cs_to_sh_tmu(cs); | |
0aeac458 | 232 | int ret; |
9570ef20 | 233 | |
61a53bfa RW |
234 | if (WARN_ON(p->cs_enabled)) |
235 | return 0; | |
236 | ||
0aeac458 | 237 | ret = sh_tmu_enable(p); |
eaa49a8c | 238 | if (!ret) { |
0aeac458 | 239 | __clocksource_updatefreq_hz(cs, p->rate); |
eaa49a8c RW |
240 | p->cs_enabled = true; |
241 | } | |
61a53bfa | 242 | |
0aeac458 | 243 | return ret; |
9570ef20 MD |
244 | } |
245 | ||
246 | static void sh_tmu_clocksource_disable(struct clocksource *cs) | |
247 | { | |
eaa49a8c RW |
248 | struct sh_tmu_priv *p = cs_to_sh_tmu(cs); |
249 | ||
61a53bfa RW |
250 | if (WARN_ON(!p->cs_enabled)) |
251 | return; | |
eaa49a8c RW |
252 | |
253 | sh_tmu_disable(p); | |
254 | p->cs_enabled = false; | |
255 | } | |
256 | ||
257 | static void sh_tmu_clocksource_suspend(struct clocksource *cs) | |
258 | { | |
259 | struct sh_tmu_priv *p = cs_to_sh_tmu(cs); | |
260 | ||
61a53bfa RW |
261 | if (!p->cs_enabled) |
262 | return; | |
eaa49a8c | 263 | |
61a53bfa RW |
264 | if (--p->enable_count == 0) { |
265 | __sh_tmu_disable(p); | |
266 | pm_genpd_syscore_poweroff(&p->pdev->dev); | |
267 | } | |
eaa49a8c RW |
268 | } |
269 | ||
270 | static void sh_tmu_clocksource_resume(struct clocksource *cs) | |
271 | { | |
272 | struct sh_tmu_priv *p = cs_to_sh_tmu(cs); | |
273 | ||
61a53bfa RW |
274 | if (!p->cs_enabled) |
275 | return; | |
276 | ||
277 | if (p->enable_count++ == 0) { | |
278 | pm_genpd_syscore_poweron(&p->pdev->dev); | |
279 | __sh_tmu_enable(p); | |
280 | } | |
9570ef20 MD |
281 | } |
282 | ||
283 | static int sh_tmu_register_clocksource(struct sh_tmu_priv *p, | |
284 | char *name, unsigned long rating) | |
285 | { | |
286 | struct clocksource *cs = &p->cs; | |
287 | ||
288 | cs->name = name; | |
289 | cs->rating = rating; | |
290 | cs->read = sh_tmu_clocksource_read; | |
291 | cs->enable = sh_tmu_clocksource_enable; | |
292 | cs->disable = sh_tmu_clocksource_disable; | |
eaa49a8c RW |
293 | cs->suspend = sh_tmu_clocksource_suspend; |
294 | cs->resume = sh_tmu_clocksource_resume; | |
9570ef20 MD |
295 | cs->mask = CLOCKSOURCE_MASK(32); |
296 | cs->flags = CLOCK_SOURCE_IS_CONTINUOUS; | |
66f49121 | 297 | |
214a607a | 298 | dev_info(&p->pdev->dev, "used as clock source\n"); |
0aeac458 MD |
299 | |
300 | /* Register with dummy 1 Hz value, gets updated in ->enable() */ | |
301 | clocksource_register_hz(cs, 1); | |
9570ef20 MD |
302 | return 0; |
303 | } | |
304 | ||
305 | static struct sh_tmu_priv *ced_to_sh_tmu(struct clock_event_device *ced) | |
306 | { | |
307 | return container_of(ced, struct sh_tmu_priv, ced); | |
308 | } | |
309 | ||
310 | static void sh_tmu_clock_event_start(struct sh_tmu_priv *p, int periodic) | |
311 | { | |
312 | struct clock_event_device *ced = &p->ced; | |
313 | ||
314 | sh_tmu_enable(p); | |
315 | ||
3977407e | 316 | clockevents_config(ced, p->rate); |
9570ef20 MD |
317 | |
318 | if (periodic) { | |
319 | p->periodic = (p->rate + HZ/2) / HZ; | |
320 | sh_tmu_set_next(p, p->periodic, 1); | |
321 | } | |
322 | } | |
323 | ||
324 | static void sh_tmu_clock_event_mode(enum clock_event_mode mode, | |
325 | struct clock_event_device *ced) | |
326 | { | |
327 | struct sh_tmu_priv *p = ced_to_sh_tmu(ced); | |
328 | int disabled = 0; | |
329 | ||
330 | /* deal with old setting first */ | |
331 | switch (ced->mode) { | |
332 | case CLOCK_EVT_MODE_PERIODIC: | |
333 | case CLOCK_EVT_MODE_ONESHOT: | |
334 | sh_tmu_disable(p); | |
335 | disabled = 1; | |
336 | break; | |
337 | default: | |
338 | break; | |
339 | } | |
340 | ||
341 | switch (mode) { | |
342 | case CLOCK_EVT_MODE_PERIODIC: | |
214a607a | 343 | dev_info(&p->pdev->dev, "used for periodic clock events\n"); |
9570ef20 MD |
344 | sh_tmu_clock_event_start(p, 1); |
345 | break; | |
346 | case CLOCK_EVT_MODE_ONESHOT: | |
214a607a | 347 | dev_info(&p->pdev->dev, "used for oneshot clock events\n"); |
9570ef20 MD |
348 | sh_tmu_clock_event_start(p, 0); |
349 | break; | |
350 | case CLOCK_EVT_MODE_UNUSED: | |
351 | if (!disabled) | |
352 | sh_tmu_disable(p); | |
353 | break; | |
354 | case CLOCK_EVT_MODE_SHUTDOWN: | |
355 | default: | |
356 | break; | |
357 | } | |
358 | } | |
359 | ||
360 | static int sh_tmu_clock_event_next(unsigned long delta, | |
361 | struct clock_event_device *ced) | |
362 | { | |
363 | struct sh_tmu_priv *p = ced_to_sh_tmu(ced); | |
364 | ||
365 | BUG_ON(ced->mode != CLOCK_EVT_MODE_ONESHOT); | |
366 | ||
367 | /* program new delta value */ | |
368 | sh_tmu_set_next(p, delta, 0); | |
369 | return 0; | |
370 | } | |
371 | ||
eaa49a8c RW |
372 | static void sh_tmu_clock_event_suspend(struct clock_event_device *ced) |
373 | { | |
374 | pm_genpd_syscore_poweroff(&ced_to_sh_tmu(ced)->pdev->dev); | |
375 | } | |
376 | ||
377 | static void sh_tmu_clock_event_resume(struct clock_event_device *ced) | |
378 | { | |
379 | pm_genpd_syscore_poweron(&ced_to_sh_tmu(ced)->pdev->dev); | |
380 | } | |
381 | ||
9570ef20 MD |
382 | static void sh_tmu_register_clockevent(struct sh_tmu_priv *p, |
383 | char *name, unsigned long rating) | |
384 | { | |
385 | struct clock_event_device *ced = &p->ced; | |
386 | int ret; | |
387 | ||
388 | memset(ced, 0, sizeof(*ced)); | |
389 | ||
390 | ced->name = name; | |
391 | ced->features = CLOCK_EVT_FEAT_PERIODIC; | |
392 | ced->features |= CLOCK_EVT_FEAT_ONESHOT; | |
393 | ced->rating = rating; | |
394 | ced->cpumask = cpumask_of(0); | |
395 | ced->set_next_event = sh_tmu_clock_event_next; | |
396 | ced->set_mode = sh_tmu_clock_event_mode; | |
eaa49a8c RW |
397 | ced->suspend = sh_tmu_clock_event_suspend; |
398 | ced->resume = sh_tmu_clock_event_resume; | |
9570ef20 | 399 | |
214a607a | 400 | dev_info(&p->pdev->dev, "used for clock events\n"); |
3977407e PM |
401 | |
402 | clockevents_config_and_register(ced, 1, 0x300, 0xffffffff); | |
da64c2a8 | 403 | |
9570ef20 MD |
404 | ret = setup_irq(p->irqaction.irq, &p->irqaction); |
405 | if (ret) { | |
214a607a PM |
406 | dev_err(&p->pdev->dev, "failed to request irq %d\n", |
407 | p->irqaction.irq); | |
9570ef20 MD |
408 | return; |
409 | } | |
9570ef20 MD |
410 | } |
411 | ||
412 | static int sh_tmu_register(struct sh_tmu_priv *p, char *name, | |
413 | unsigned long clockevent_rating, | |
414 | unsigned long clocksource_rating) | |
415 | { | |
416 | if (clockevent_rating) | |
417 | sh_tmu_register_clockevent(p, name, clockevent_rating); | |
418 | else if (clocksource_rating) | |
419 | sh_tmu_register_clocksource(p, name, clocksource_rating); | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
424 | static int sh_tmu_setup(struct sh_tmu_priv *p, struct platform_device *pdev) | |
425 | { | |
46a12f74 | 426 | struct sh_timer_config *cfg = pdev->dev.platform_data; |
9570ef20 MD |
427 | struct resource *res; |
428 | int irq, ret; | |
429 | ret = -ENXIO; | |
430 | ||
431 | memset(p, 0, sizeof(*p)); | |
432 | p->pdev = pdev; | |
433 | ||
434 | if (!cfg) { | |
435 | dev_err(&p->pdev->dev, "missing platform data\n"); | |
436 | goto err0; | |
437 | } | |
438 | ||
439 | platform_set_drvdata(pdev, p); | |
440 | ||
441 | res = platform_get_resource(p->pdev, IORESOURCE_MEM, 0); | |
442 | if (!res) { | |
443 | dev_err(&p->pdev->dev, "failed to get I/O memory\n"); | |
444 | goto err0; | |
445 | } | |
446 | ||
447 | irq = platform_get_irq(p->pdev, 0); | |
448 | if (irq < 0) { | |
449 | dev_err(&p->pdev->dev, "failed to get irq\n"); | |
450 | goto err0; | |
451 | } | |
452 | ||
453 | /* map memory, let mapbase point to our channel */ | |
454 | p->mapbase = ioremap_nocache(res->start, resource_size(res)); | |
455 | if (p->mapbase == NULL) { | |
214a607a | 456 | dev_err(&p->pdev->dev, "failed to remap I/O memory\n"); |
9570ef20 MD |
457 | goto err0; |
458 | } | |
459 | ||
460 | /* setup data for setup_irq() (too early for request_irq()) */ | |
214a607a | 461 | p->irqaction.name = dev_name(&p->pdev->dev); |
9570ef20 MD |
462 | p->irqaction.handler = sh_tmu_interrupt; |
463 | p->irqaction.dev_id = p; | |
464 | p->irqaction.irq = irq; | |
fecf066c PM |
465 | p->irqaction.flags = IRQF_DISABLED | IRQF_TIMER | \ |
466 | IRQF_IRQPOLL | IRQF_NOBALANCING; | |
9570ef20 MD |
467 | |
468 | /* get hold of clock */ | |
c2a25e81 | 469 | p->clk = clk_get(&p->pdev->dev, "tmu_fck"); |
9570ef20 | 470 | if (IS_ERR(p->clk)) { |
03ff858c MD |
471 | dev_err(&p->pdev->dev, "cannot get clock\n"); |
472 | ret = PTR_ERR(p->clk); | |
473 | goto err1; | |
9570ef20 | 474 | } |
61a53bfa RW |
475 | p->cs_enabled = false; |
476 | p->enable_count = 0; | |
9570ef20 | 477 | |
214a607a | 478 | return sh_tmu_register(p, (char *)dev_name(&p->pdev->dev), |
9570ef20 MD |
479 | cfg->clockevent_rating, |
480 | cfg->clocksource_rating); | |
481 | err1: | |
482 | iounmap(p->mapbase); | |
483 | err0: | |
484 | return ret; | |
485 | } | |
486 | ||
487 | static int __devinit sh_tmu_probe(struct platform_device *pdev) | |
488 | { | |
489 | struct sh_tmu_priv *p = platform_get_drvdata(pdev); | |
61a53bfa | 490 | struct sh_timer_config *cfg = pdev->dev.platform_data; |
9570ef20 MD |
491 | int ret; |
492 | ||
eaa49a8c | 493 | if (!is_early_platform_device(pdev)) { |
61a53bfa RW |
494 | pm_runtime_set_active(&pdev->dev); |
495 | pm_runtime_enable(&pdev->dev); | |
eaa49a8c | 496 | } |
2ee619f9 | 497 | |
9570ef20 | 498 | if (p) { |
214a607a | 499 | dev_info(&pdev->dev, "kept as earlytimer\n"); |
61a53bfa | 500 | goto out; |
9570ef20 MD |
501 | } |
502 | ||
503 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
504 | if (p == NULL) { | |
505 | dev_err(&pdev->dev, "failed to allocate driver data\n"); | |
506 | return -ENOMEM; | |
507 | } | |
508 | ||
509 | ret = sh_tmu_setup(p, pdev); | |
510 | if (ret) { | |
511 | kfree(p); | |
512 | platform_set_drvdata(pdev, NULL); | |
61a53bfa RW |
513 | pm_runtime_idle(&pdev->dev); |
514 | return ret; | |
9570ef20 | 515 | } |
61a53bfa RW |
516 | if (is_early_platform_device(pdev)) |
517 | return 0; | |
518 | ||
519 | out: | |
520 | if (cfg->clockevent_rating || cfg->clocksource_rating) | |
521 | pm_runtime_irq_safe(&pdev->dev); | |
522 | else | |
523 | pm_runtime_idle(&pdev->dev); | |
524 | ||
525 | return 0; | |
9570ef20 MD |
526 | } |
527 | ||
528 | static int __devexit sh_tmu_remove(struct platform_device *pdev) | |
529 | { | |
530 | return -EBUSY; /* cannot unregister clockevent and clocksource */ | |
531 | } | |
532 | ||
533 | static struct platform_driver sh_tmu_device_driver = { | |
534 | .probe = sh_tmu_probe, | |
535 | .remove = __devexit_p(sh_tmu_remove), | |
536 | .driver = { | |
537 | .name = "sh_tmu", | |
538 | } | |
539 | }; | |
540 | ||
541 | static int __init sh_tmu_init(void) | |
542 | { | |
543 | return platform_driver_register(&sh_tmu_device_driver); | |
544 | } | |
545 | ||
546 | static void __exit sh_tmu_exit(void) | |
547 | { | |
548 | platform_driver_unregister(&sh_tmu_device_driver); | |
549 | } | |
550 | ||
551 | early_platform_init("earlytimer", &sh_tmu_device_driver); | |
552 | module_init(sh_tmu_init); | |
553 | module_exit(sh_tmu_exit); | |
554 | ||
555 | MODULE_AUTHOR("Magnus Damm"); | |
556 | MODULE_DESCRIPTION("SuperH TMU Timer Driver"); | |
557 | MODULE_LICENSE("GPL v2"); |