Commit | Line | Data |
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7caa4342 D |
1 | /* |
2 | * SuperH Mobile MERAM Driver for SuperH Mobile LCDC Driver | |
3 | * | |
4 | * Copyright (c) 2011 Damian Hobson-Garcia <dhobsong@igel.co.jp> | |
5 | * Takanari Hayama <taki@igel.co.jp> | |
6 | * | |
7 | * This file is subject to the terms and conditions of the GNU General Public | |
8 | * License. See the file "COPYING" in the main directory of this archive | |
9 | * for more details. | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/device.h> | |
15 | #include <linux/io.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/platform_device.h> | |
18 | ||
19 | #include "sh_mobile_meram.h" | |
20 | ||
21 | /* meram registers */ | |
22 | #define MExxCTL 0x0 | |
23 | #define MExxBSIZE 0x4 | |
24 | #define MExxMNCF 0x8 | |
25 | #define MExxSARA 0x10 | |
26 | #define MExxSARB 0x14 | |
27 | #define MExxSBSIZE 0x18 | |
28 | ||
29 | #define MERAM_MExxCTL_VAL(ctl, next_icb, addr) \ | |
30 | ((ctl) | (((next_icb) & 0x1f) << 11) | (((addr) & 0x7ff) << 16)) | |
31 | #define MERAM_MExxBSIZE_VAL(a, b, c) \ | |
32 | (((a) << 28) | ((b) << 16) | (c)) | |
33 | ||
34 | #define MEVCR1 0x4 | |
35 | #define MEACTS 0x10 | |
36 | #define MEQSEL1 0x40 | |
37 | #define MEQSEL2 0x44 | |
38 | ||
39 | /* settings */ | |
40 | #define MERAM_SEC_LINE 15 | |
41 | #define MERAM_LINE_WIDTH 2048 | |
42 | ||
43 | /* | |
44 | * MERAM/ICB access functions | |
45 | */ | |
46 | ||
47 | #define MERAM_ICB_OFFSET(base, idx, off) \ | |
48 | ((base) + (0x400 + ((idx) * 0x20) + (off))) | |
49 | ||
50 | static inline void meram_write_icb(void __iomem *base, int idx, int off, | |
51 | unsigned long val) | |
52 | { | |
53 | iowrite32(val, MERAM_ICB_OFFSET(base, idx, off)); | |
54 | } | |
55 | ||
56 | static inline unsigned long meram_read_icb(void __iomem *base, int idx, int off) | |
57 | { | |
58 | return ioread32(MERAM_ICB_OFFSET(base, idx, off)); | |
59 | } | |
60 | ||
61 | static inline void meram_write_reg(void __iomem *base, int off, | |
62 | unsigned long val) | |
63 | { | |
64 | iowrite32(val, base + off); | |
65 | } | |
66 | ||
67 | static inline unsigned long meram_read_reg(void __iomem *base, int off) | |
68 | { | |
69 | return ioread32(base + off); | |
70 | } | |
71 | ||
72 | /* | |
73 | * register ICB | |
74 | */ | |
75 | ||
76 | #define MERAM_CACHE_START(p) ((p) >> 16) | |
77 | #define MERAM_CACHE_END(p) ((p) & 0xffff) | |
78 | #define MERAM_CACHE_SET(o, s) ((((o) & 0xffff) << 16) | \ | |
79 | (((o) + (s) - 1) & 0xffff)) | |
80 | ||
81 | /* | |
82 | * check if there's no overlaps in MERAM allocation. | |
83 | */ | |
84 | ||
85 | static inline int meram_check_overlap(struct sh_mobile_meram_priv *priv, | |
86 | struct sh_mobile_meram_icb *new) | |
87 | { | |
88 | int i; | |
89 | int used_start, used_end, meram_start, meram_end; | |
90 | ||
91 | /* valid ICB? */ | |
92 | if (new->marker_icb & ~0x1f || new->cache_icb & ~0x1f) | |
93 | return 1; | |
94 | ||
95 | if (test_bit(new->marker_icb, &priv->used_icb) || | |
96 | test_bit(new->cache_icb, &priv->used_icb)) | |
97 | return 1; | |
98 | ||
99 | for (i = 0; i < priv->used_meram_cache_regions; i++) { | |
100 | used_start = MERAM_CACHE_START(priv->used_meram_cache[i]); | |
101 | used_end = MERAM_CACHE_END(priv->used_meram_cache[i]); | |
102 | meram_start = new->meram_offset; | |
103 | meram_end = new->meram_offset + new->meram_size; | |
104 | ||
105 | if ((meram_start >= used_start && meram_start < used_end) || | |
106 | (meram_end > used_start && meram_end < used_end)) | |
107 | return 1; | |
108 | } | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
113 | /* | |
114 | * mark the specified ICB as used | |
115 | */ | |
116 | ||
117 | static inline void meram_mark(struct sh_mobile_meram_priv *priv, | |
118 | struct sh_mobile_meram_icb *new) | |
119 | { | |
120 | int n; | |
121 | ||
122 | if (new->marker_icb < 0 || new->cache_icb < 0) | |
123 | return; | |
124 | ||
125 | __set_bit(new->marker_icb, &priv->used_icb); | |
126 | __set_bit(new->cache_icb, &priv->used_icb); | |
127 | ||
128 | n = priv->used_meram_cache_regions; | |
129 | ||
130 | priv->used_meram_cache[n] = MERAM_CACHE_SET(new->meram_offset, | |
131 | new->meram_size); | |
132 | ||
133 | priv->used_meram_cache_regions++; | |
134 | } | |
135 | ||
136 | /* | |
137 | * unmark the specified ICB as used | |
138 | */ | |
139 | ||
140 | static inline void meram_unmark(struct sh_mobile_meram_priv *priv, | |
141 | struct sh_mobile_meram_icb *icb) | |
142 | { | |
143 | int i; | |
144 | unsigned long pattern; | |
145 | ||
146 | if (icb->marker_icb < 0 || icb->cache_icb < 0) | |
147 | return; | |
148 | ||
149 | __clear_bit(icb->marker_icb, &priv->used_icb); | |
150 | __clear_bit(icb->cache_icb, &priv->used_icb); | |
151 | ||
152 | pattern = MERAM_CACHE_SET(icb->meram_offset, icb->meram_size); | |
153 | for (i = 0; i < priv->used_meram_cache_regions; i++) { | |
154 | if (priv->used_meram_cache[i] == pattern) { | |
155 | while (i < priv->used_meram_cache_regions - 1) { | |
156 | priv->used_meram_cache[i] = | |
157 | priv->used_meram_cache[i + 1] ; | |
158 | i++; | |
159 | } | |
160 | priv->used_meram_cache[i] = 0; | |
161 | priv->used_meram_cache_regions--; | |
162 | break; | |
163 | } | |
164 | } | |
165 | } | |
166 | ||
3fedd2ac D |
167 | /* |
168 | * is this a YCbCr(NV12, NV16 or NV24) colorspace | |
169 | */ | |
170 | static inline int is_nvcolor(int cspace) | |
171 | { | |
172 | if (cspace == SH_MOBILE_MERAM_PF_NV || | |
173 | cspace == SH_MOBILE_MERAM_PF_NV24) | |
174 | return 1; | |
175 | return 0; | |
176 | } | |
7caa4342 D |
177 | |
178 | /* | |
179 | * set the next address to fetch | |
180 | */ | |
181 | static inline void meram_set_next_addr(struct sh_mobile_meram_priv *priv, | |
182 | struct sh_mobile_meram_cfg *cfg, | |
183 | unsigned long base_addr_y, | |
184 | unsigned long base_addr_c) | |
185 | { | |
186 | unsigned long target; | |
187 | ||
188 | target = (cfg->current_reg) ? MExxSARA : MExxSARB; | |
189 | cfg->current_reg ^= 1; | |
190 | ||
191 | /* set the next address to fetch */ | |
192 | meram_write_icb(priv->base, cfg->icb[0].cache_icb, target, | |
193 | base_addr_y); | |
194 | meram_write_icb(priv->base, cfg->icb[0].marker_icb, target, | |
195 | base_addr_y + cfg->icb[0].cache_unit); | |
196 | ||
3fedd2ac | 197 | if (is_nvcolor(cfg->pixelformat)) { |
7caa4342 D |
198 | meram_write_icb(priv->base, cfg->icb[1].cache_icb, target, |
199 | base_addr_c); | |
200 | meram_write_icb(priv->base, cfg->icb[1].marker_icb, target, | |
201 | base_addr_c + cfg->icb[1].cache_unit); | |
202 | } | |
203 | } | |
204 | ||
205 | /* | |
206 | * get the next ICB address | |
207 | */ | |
208 | static inline void meram_get_next_icb_addr(struct sh_mobile_meram_info *pdata, | |
209 | struct sh_mobile_meram_cfg *cfg, | |
210 | unsigned long *icb_addr_y, | |
211 | unsigned long *icb_addr_c) | |
212 | { | |
213 | unsigned long icb_offset; | |
214 | ||
215 | if (pdata->addr_mode == SH_MOBILE_MERAM_MODE0) | |
216 | icb_offset = 0x80000000 | (cfg->current_reg << 29); | |
217 | else | |
218 | icb_offset = 0xc0000000 | (cfg->current_reg << 23); | |
219 | ||
220 | *icb_addr_y = icb_offset | (cfg->icb[0].marker_icb << 24); | |
06c8a6a3 | 221 | if (is_nvcolor(cfg->pixelformat)) |
7caa4342 D |
222 | *icb_addr_c = icb_offset | (cfg->icb[1].marker_icb << 24); |
223 | } | |
224 | ||
225 | #define MERAM_CALC_BYTECOUNT(x, y) \ | |
226 | (((x) * (y) + (MERAM_LINE_WIDTH - 1)) & ~(MERAM_LINE_WIDTH - 1)) | |
227 | ||
228 | /* | |
229 | * initialize MERAM | |
230 | */ | |
231 | ||
232 | static int meram_init(struct sh_mobile_meram_priv *priv, | |
233 | struct sh_mobile_meram_icb *icb, | |
234 | int xres, int yres, int *out_pitch) | |
235 | { | |
236 | unsigned long total_byte_count = MERAM_CALC_BYTECOUNT(xres, yres); | |
237 | unsigned long bnm; | |
238 | int lcdc_pitch, xpitch, line_cnt; | |
239 | int save_lines; | |
240 | ||
241 | /* adjust pitch to 1024, 2048, 4096 or 8192 */ | |
242 | lcdc_pitch = (xres - 1) | 1023; | |
243 | lcdc_pitch = lcdc_pitch | (lcdc_pitch >> 1); | |
244 | lcdc_pitch = lcdc_pitch | (lcdc_pitch >> 2); | |
245 | lcdc_pitch += 1; | |
246 | ||
247 | /* derive settings */ | |
248 | if (lcdc_pitch == 8192 && yres >= 1024) { | |
249 | lcdc_pitch = xpitch = MERAM_LINE_WIDTH; | |
250 | line_cnt = total_byte_count >> 11; | |
251 | *out_pitch = xres; | |
252 | save_lines = (icb->meram_size / 16 / MERAM_SEC_LINE); | |
253 | save_lines *= MERAM_SEC_LINE; | |
254 | } else { | |
255 | xpitch = xres; | |
256 | line_cnt = yres; | |
257 | *out_pitch = lcdc_pitch; | |
258 | save_lines = icb->meram_size / (lcdc_pitch >> 10) / 2; | |
259 | save_lines &= 0xff; | |
260 | } | |
261 | bnm = (save_lines - 1) << 16; | |
262 | ||
263 | /* TODO: we better to check if we have enough MERAM buffer size */ | |
264 | ||
265 | /* set up ICB */ | |
266 | meram_write_icb(priv->base, icb->cache_icb, MExxBSIZE, | |
267 | MERAM_MExxBSIZE_VAL(0x0, line_cnt - 1, xpitch - 1)); | |
268 | meram_write_icb(priv->base, icb->marker_icb, MExxBSIZE, | |
269 | MERAM_MExxBSIZE_VAL(0xf, line_cnt - 1, xpitch - 1)); | |
270 | ||
271 | meram_write_icb(priv->base, icb->cache_icb, MExxMNCF, bnm); | |
272 | meram_write_icb(priv->base, icb->marker_icb, MExxMNCF, bnm); | |
273 | ||
274 | meram_write_icb(priv->base, icb->cache_icb, MExxSBSIZE, xpitch); | |
275 | meram_write_icb(priv->base, icb->marker_icb, MExxSBSIZE, xpitch); | |
276 | ||
277 | /* save a cache unit size */ | |
278 | icb->cache_unit = xres * save_lines; | |
279 | ||
280 | /* | |
281 | * Set MERAM for framebuffer | |
282 | * | |
283 | * 0x70f: WD = 0x3, WS=0x1, CM=0x1, MD=FB mode | |
284 | * we also chain the cache_icb and the marker_icb. | |
285 | * we also split the allocated MERAM buffer between two ICBs. | |
286 | */ | |
287 | meram_write_icb(priv->base, icb->cache_icb, MExxCTL, | |
288 | MERAM_MExxCTL_VAL(0x70f, icb->marker_icb, | |
289 | icb->meram_offset)); | |
290 | meram_write_icb(priv->base, icb->marker_icb, MExxCTL, | |
291 | MERAM_MExxCTL_VAL(0x70f, icb->cache_icb, | |
292 | icb->meram_offset + | |
293 | icb->meram_size / 2)); | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
298 | static void meram_deinit(struct sh_mobile_meram_priv *priv, | |
299 | struct sh_mobile_meram_icb *icb) | |
300 | { | |
301 | /* disable ICB */ | |
302 | meram_write_icb(priv->base, icb->cache_icb, MExxCTL, 0); | |
303 | meram_write_icb(priv->base, icb->marker_icb, MExxCTL, 0); | |
304 | icb->cache_unit = 0; | |
305 | } | |
306 | ||
307 | /* | |
308 | * register the ICB | |
309 | */ | |
310 | ||
311 | static int sh_mobile_meram_register(struct sh_mobile_meram_info *pdata, | |
312 | struct sh_mobile_meram_cfg *cfg, | |
313 | int xres, int yres, int pixelformat, | |
314 | unsigned long base_addr_y, | |
315 | unsigned long base_addr_c, | |
316 | unsigned long *icb_addr_y, | |
317 | unsigned long *icb_addr_c, | |
318 | int *pitch) | |
319 | { | |
320 | struct platform_device *pdev; | |
321 | struct sh_mobile_meram_priv *priv; | |
322 | int n, out_pitch; | |
323 | int error = 0; | |
324 | ||
325 | if (!pdata || !pdata->priv || !pdata->pdev || !cfg) | |
326 | return -EINVAL; | |
327 | ||
328 | if (pixelformat != SH_MOBILE_MERAM_PF_NV && | |
3fedd2ac | 329 | pixelformat != SH_MOBILE_MERAM_PF_NV24 && |
7caa4342 D |
330 | pixelformat != SH_MOBILE_MERAM_PF_RGB) |
331 | return -EINVAL; | |
332 | ||
333 | priv = pdata->priv; | |
334 | pdev = pdata->pdev; | |
335 | ||
336 | dev_dbg(&pdev->dev, "registering %dx%d (%s) (y=%08lx, c=%08lx)", | |
337 | xres, yres, (!pixelformat) ? "yuv" : "rgb", | |
338 | base_addr_y, base_addr_c); | |
339 | ||
340 | mutex_lock(&priv->lock); | |
341 | ||
342 | /* we can't handle wider than 8192px */ | |
343 | if (xres > 8192) { | |
344 | dev_err(&pdev->dev, "width exceeding the limit (> 8192)."); | |
345 | error = -EINVAL; | |
346 | goto err; | |
347 | } | |
348 | ||
349 | if (priv->used_meram_cache_regions + 2 > SH_MOBILE_MERAM_ICB_NUM) { | |
350 | dev_err(&pdev->dev, "no more ICB available."); | |
351 | error = -EINVAL; | |
352 | goto err; | |
353 | } | |
354 | ||
355 | /* do we have at least one ICB config? */ | |
356 | if (cfg->icb[0].marker_icb < 0 || cfg->icb[0].cache_icb < 0) { | |
357 | dev_err(&pdev->dev, "at least one ICB is required."); | |
358 | error = -EINVAL; | |
359 | goto err; | |
360 | } | |
361 | ||
362 | /* make sure that there's no overlaps */ | |
363 | if (meram_check_overlap(priv, &cfg->icb[0])) { | |
364 | dev_err(&pdev->dev, "conflicting config detected."); | |
365 | error = -EINVAL; | |
366 | goto err; | |
367 | } | |
368 | n = 1; | |
369 | ||
370 | /* do the same if we have the second ICB set */ | |
371 | if (cfg->icb[1].marker_icb >= 0 && cfg->icb[1].cache_icb >= 0) { | |
372 | if (meram_check_overlap(priv, &cfg->icb[1])) { | |
373 | dev_err(&pdev->dev, "conflicting config detected."); | |
374 | error = -EINVAL; | |
375 | goto err; | |
376 | } | |
377 | n = 2; | |
378 | } | |
379 | ||
3fedd2ac | 380 | if (is_nvcolor(pixelformat) && n != 2) { |
7caa4342 D |
381 | dev_err(&pdev->dev, "requires two ICB sets for planar Y/C."); |
382 | error = -EINVAL; | |
383 | goto err; | |
384 | } | |
385 | ||
386 | /* we now register the ICB */ | |
387 | cfg->pixelformat = pixelformat; | |
388 | meram_mark(priv, &cfg->icb[0]); | |
3fedd2ac | 389 | if (is_nvcolor(pixelformat)) |
7caa4342 D |
390 | meram_mark(priv, &cfg->icb[1]); |
391 | ||
392 | /* initialize MERAM */ | |
393 | meram_init(priv, &cfg->icb[0], xres, yres, &out_pitch); | |
394 | *pitch = out_pitch; | |
395 | if (pixelformat == SH_MOBILE_MERAM_PF_NV) | |
396 | meram_init(priv, &cfg->icb[1], xres, (yres + 1) / 2, | |
397 | &out_pitch); | |
3fedd2ac D |
398 | else if (pixelformat == SH_MOBILE_MERAM_PF_NV24) |
399 | meram_init(priv, &cfg->icb[1], 2 * xres, (yres + 1) / 2, | |
400 | &out_pitch); | |
7caa4342 D |
401 | |
402 | cfg->current_reg = 1; | |
403 | meram_set_next_addr(priv, cfg, base_addr_y, base_addr_c); | |
404 | meram_get_next_icb_addr(pdata, cfg, icb_addr_y, icb_addr_c); | |
405 | ||
406 | dev_dbg(&pdev->dev, "registered - can access via y=%08lx, c=%08lx", | |
407 | *icb_addr_y, *icb_addr_c); | |
408 | ||
409 | err: | |
410 | mutex_unlock(&priv->lock); | |
411 | return error; | |
412 | } | |
413 | ||
414 | static int sh_mobile_meram_unregister(struct sh_mobile_meram_info *pdata, | |
415 | struct sh_mobile_meram_cfg *cfg) | |
416 | { | |
417 | struct sh_mobile_meram_priv *priv; | |
418 | ||
419 | if (!pdata || !pdata->priv || !cfg) | |
420 | return -EINVAL; | |
421 | ||
422 | priv = pdata->priv; | |
423 | ||
424 | mutex_lock(&priv->lock); | |
425 | ||
426 | /* deinit & unmark */ | |
3fedd2ac | 427 | if (is_nvcolor(cfg->pixelformat)) { |
7caa4342 D |
428 | meram_deinit(priv, &cfg->icb[1]); |
429 | meram_unmark(priv, &cfg->icb[1]); | |
430 | } | |
431 | meram_deinit(priv, &cfg->icb[0]); | |
432 | meram_unmark(priv, &cfg->icb[0]); | |
433 | ||
434 | mutex_unlock(&priv->lock); | |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
439 | static int sh_mobile_meram_update(struct sh_mobile_meram_info *pdata, | |
440 | struct sh_mobile_meram_cfg *cfg, | |
441 | unsigned long base_addr_y, | |
442 | unsigned long base_addr_c, | |
443 | unsigned long *icb_addr_y, | |
444 | unsigned long *icb_addr_c) | |
445 | { | |
446 | struct sh_mobile_meram_priv *priv; | |
447 | ||
448 | if (!pdata || !pdata->priv || !cfg) | |
449 | return -EINVAL; | |
450 | ||
451 | priv = pdata->priv; | |
452 | ||
453 | mutex_lock(&priv->lock); | |
454 | ||
455 | meram_set_next_addr(priv, cfg, base_addr_y, base_addr_c); | |
456 | meram_get_next_icb_addr(pdata, cfg, icb_addr_y, icb_addr_c); | |
457 | ||
458 | mutex_unlock(&priv->lock); | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
463 | static struct sh_mobile_meram_ops sh_mobile_meram_ops = { | |
464 | .module = THIS_MODULE, | |
465 | .meram_register = sh_mobile_meram_register, | |
466 | .meram_unregister = sh_mobile_meram_unregister, | |
467 | .meram_update = sh_mobile_meram_update, | |
468 | }; | |
469 | ||
470 | /* | |
471 | * initialize MERAM | |
472 | */ | |
473 | ||
474 | static int sh_mobile_meram_remove(struct platform_device *pdev); | |
475 | ||
476 | static int __devinit sh_mobile_meram_probe(struct platform_device *pdev) | |
477 | { | |
478 | struct sh_mobile_meram_priv *priv; | |
479 | struct sh_mobile_meram_info *pdata = pdev->dev.platform_data; | |
480 | struct resource *res; | |
481 | int error; | |
482 | ||
483 | if (!pdata) { | |
484 | dev_err(&pdev->dev, "no platform data defined\n"); | |
485 | return -EINVAL; | |
486 | } | |
487 | ||
488 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
489 | if (!res) { | |
490 | dev_err(&pdev->dev, "cannot get platform resources\n"); | |
491 | return -ENOENT; | |
492 | } | |
493 | ||
494 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
495 | if (!priv) { | |
496 | dev_err(&pdev->dev, "cannot allocate device data\n"); | |
497 | return -ENOMEM; | |
498 | } | |
499 | ||
500 | platform_set_drvdata(pdev, priv); | |
501 | ||
502 | /* initialize private data */ | |
503 | mutex_init(&priv->lock); | |
504 | priv->base = ioremap_nocache(res->start, resource_size(res)); | |
505 | if (!priv->base) { | |
506 | dev_err(&pdev->dev, "ioremap failed\n"); | |
507 | error = -EFAULT; | |
508 | goto err; | |
509 | } | |
510 | pdata->ops = &sh_mobile_meram_ops; | |
511 | pdata->priv = priv; | |
512 | pdata->pdev = pdev; | |
513 | ||
514 | /* initialize ICB addressing mode */ | |
515 | if (pdata->addr_mode == SH_MOBILE_MERAM_MODE1) | |
516 | meram_write_reg(priv->base, MEVCR1, 1 << 29); | |
517 | ||
518 | dev_info(&pdev->dev, "sh_mobile_meram initialized."); | |
519 | ||
520 | return 0; | |
521 | ||
522 | err: | |
523 | sh_mobile_meram_remove(pdev); | |
524 | ||
525 | return error; | |
526 | } | |
527 | ||
528 | ||
529 | static int sh_mobile_meram_remove(struct platform_device *pdev) | |
530 | { | |
531 | struct sh_mobile_meram_priv *priv = platform_get_drvdata(pdev); | |
532 | ||
533 | if (priv->base) | |
534 | iounmap(priv->base); | |
535 | ||
536 | mutex_destroy(&priv->lock); | |
537 | ||
538 | kfree(priv); | |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
543 | static struct platform_driver sh_mobile_meram_driver = { | |
544 | .driver = { | |
545 | .name = "sh_mobile_meram", | |
546 | .owner = THIS_MODULE, | |
547 | }, | |
548 | .probe = sh_mobile_meram_probe, | |
549 | .remove = sh_mobile_meram_remove, | |
550 | }; | |
551 | ||
552 | static int __init sh_mobile_meram_init(void) | |
553 | { | |
554 | return platform_driver_register(&sh_mobile_meram_driver); | |
555 | } | |
556 | ||
557 | static void __exit sh_mobile_meram_exit(void) | |
558 | { | |
559 | platform_driver_unregister(&sh_mobile_meram_driver); | |
560 | } | |
561 | ||
562 | module_init(sh_mobile_meram_init); | |
563 | module_exit(sh_mobile_meram_exit); | |
564 | ||
565 | MODULE_DESCRIPTION("SuperH Mobile MERAM driver"); | |
566 | MODULE_AUTHOR("Damian Hobson-Garcia / Takanari Hayama"); | |
567 | MODULE_LICENSE("GPL v2"); |