Commit | Line | Data |
---|---|---|
2c8304d3 HS |
1 | /* |
2 | * Common code for AUO-K190X framebuffer drivers | |
3 | * | |
4 | * Copyright (C) 2012 Heiko Stuebner <heiko@sntech.de> | |
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 version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/module.h> | |
77ba809e | 12 | #include <linux/sched/mm.h> |
2c8304d3 HS |
13 | #include <linux/kernel.h> |
14 | #include <linux/gpio.h> | |
16559ae4 | 15 | #include <linux/platform_device.h> |
2c8304d3 HS |
16 | #include <linux/pm_runtime.h> |
17 | #include <linux/fb.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/uaccess.h> | |
20 | #include <linux/vmalloc.h> | |
21 | #include <linux/regulator/consumer.h> | |
22 | ||
23 | #include <video/auo_k190xfb.h> | |
24 | ||
25 | #include "auo_k190x.h" | |
26 | ||
27 | struct panel_info { | |
28 | int w; | |
29 | int h; | |
30 | }; | |
31 | ||
32 | /* table of panel specific parameters to be indexed into by the board drivers */ | |
33 | static struct panel_info panel_table[] = { | |
34 | /* standard 6" */ | |
35 | [AUOK190X_RESOLUTION_800_600] = { | |
36 | .w = 800, | |
37 | .h = 600, | |
38 | }, | |
39 | /* standard 9" */ | |
40 | [AUOK190X_RESOLUTION_1024_768] = { | |
41 | .w = 1024, | |
42 | .h = 768, | |
43 | }, | |
b61f232f HS |
44 | [AUOK190X_RESOLUTION_600_800] = { |
45 | .w = 600, | |
46 | .h = 800, | |
47 | }, | |
48 | [AUOK190X_RESOLUTION_768_1024] = { | |
49 | .w = 768, | |
50 | .h = 1024, | |
51 | }, | |
2c8304d3 HS |
52 | }; |
53 | ||
54 | /* | |
55 | * private I80 interface to the board driver | |
56 | */ | |
57 | ||
58 | static void auok190x_issue_data(struct auok190xfb_par *par, u16 data) | |
59 | { | |
60 | par->board->set_ctl(par, AUOK190X_I80_WR, 0); | |
61 | par->board->set_hdb(par, data); | |
62 | par->board->set_ctl(par, AUOK190X_I80_WR, 1); | |
63 | } | |
64 | ||
65 | static void auok190x_issue_cmd(struct auok190xfb_par *par, u16 data) | |
66 | { | |
67 | par->board->set_ctl(par, AUOK190X_I80_DC, 0); | |
68 | auok190x_issue_data(par, data); | |
69 | par->board->set_ctl(par, AUOK190X_I80_DC, 1); | |
70 | } | |
71 | ||
46574c72 HS |
72 | /** |
73 | * Conversion of 16bit color to 4bit grayscale | |
74 | * does roughly (0.3 * R + 0.6 G + 0.1 B) / 2 | |
75 | */ | |
76 | static inline int rgb565_to_gray4(u16 data, struct fb_var_screeninfo *var) | |
77 | { | |
78 | return ((((data & 0xF800) >> var->red.offset) * 77 + | |
79 | ((data & 0x07E0) >> (var->green.offset + 1)) * 151 + | |
80 | ((data & 0x1F) >> var->blue.offset) * 28) >> 8 >> 1); | |
81 | } | |
82 | ||
83 | static int auok190x_issue_pixels_rgb565(struct auok190xfb_par *par, int size, | |
84 | u16 *data) | |
85 | { | |
86 | struct fb_var_screeninfo *var = &par->info->var; | |
87 | struct device *dev = par->info->device; | |
88 | int i; | |
89 | u16 tmp; | |
90 | ||
91 | if (size & 7) { | |
92 | dev_err(dev, "issue_pixels: size %d must be a multiple of 8\n", | |
93 | size); | |
94 | return -EINVAL; | |
95 | } | |
96 | ||
97 | for (i = 0; i < (size >> 2); i++) { | |
98 | par->board->set_ctl(par, AUOK190X_I80_WR, 0); | |
99 | ||
100 | tmp = (rgb565_to_gray4(data[4*i], var) & 0x000F); | |
101 | tmp |= (rgb565_to_gray4(data[4*i+1], var) << 4) & 0x00F0; | |
102 | tmp |= (rgb565_to_gray4(data[4*i+2], var) << 8) & 0x0F00; | |
103 | tmp |= (rgb565_to_gray4(data[4*i+3], var) << 12) & 0xF000; | |
104 | ||
105 | par->board->set_hdb(par, tmp); | |
106 | par->board->set_ctl(par, AUOK190X_I80_WR, 1); | |
107 | } | |
108 | ||
109 | return 0; | |
110 | } | |
111 | ||
76de404b HS |
112 | static int auok190x_issue_pixels_gray8(struct auok190xfb_par *par, int size, |
113 | u16 *data) | |
2c8304d3 HS |
114 | { |
115 | struct device *dev = par->info->device; | |
116 | int i; | |
117 | u16 tmp; | |
118 | ||
119 | if (size & 3) { | |
120 | dev_err(dev, "issue_pixels: size %d must be a multiple of 4\n", | |
121 | size); | |
122 | return -EINVAL; | |
123 | } | |
124 | ||
125 | for (i = 0; i < (size >> 1); i++) { | |
126 | par->board->set_ctl(par, AUOK190X_I80_WR, 0); | |
127 | ||
128 | /* simple reduction of 8bit staticgray to 4bit gray | |
129 | * combines 4 * 4bit pixel values into a 16bit value | |
130 | */ | |
131 | tmp = (data[2*i] & 0xF0) >> 4; | |
132 | tmp |= (data[2*i] & 0xF000) >> 8; | |
133 | tmp |= (data[2*i+1] & 0xF0) << 4; | |
134 | tmp |= (data[2*i+1] & 0xF000); | |
135 | ||
136 | par->board->set_hdb(par, tmp); | |
137 | par->board->set_ctl(par, AUOK190X_I80_WR, 1); | |
138 | } | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
76de404b HS |
143 | static int auok190x_issue_pixels(struct auok190xfb_par *par, int size, |
144 | u16 *data) | |
145 | { | |
146 | struct fb_info *info = par->info; | |
147 | struct device *dev = par->info->device; | |
148 | ||
149 | if (info->var.bits_per_pixel == 8 && info->var.grayscale) | |
150 | auok190x_issue_pixels_gray8(par, size, data); | |
46574c72 HS |
151 | else if (info->var.bits_per_pixel == 16) |
152 | auok190x_issue_pixels_rgb565(par, size, data); | |
76de404b HS |
153 | else |
154 | dev_err(dev, "unsupported color mode (bits: %d, gray: %d)\n", | |
155 | info->var.bits_per_pixel, info->var.grayscale); | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
2c8304d3 HS |
160 | static u16 auok190x_read_data(struct auok190xfb_par *par) |
161 | { | |
162 | u16 data; | |
163 | ||
164 | par->board->set_ctl(par, AUOK190X_I80_OE, 0); | |
165 | data = par->board->get_hdb(par); | |
166 | par->board->set_ctl(par, AUOK190X_I80_OE, 1); | |
167 | ||
168 | return data; | |
169 | } | |
170 | ||
171 | /* | |
172 | * Command interface for the controller drivers | |
173 | */ | |
174 | ||
175 | void auok190x_send_command_nowait(struct auok190xfb_par *par, u16 data) | |
176 | { | |
177 | par->board->set_ctl(par, AUOK190X_I80_CS, 0); | |
178 | auok190x_issue_cmd(par, data); | |
179 | par->board->set_ctl(par, AUOK190X_I80_CS, 1); | |
180 | } | |
181 | EXPORT_SYMBOL_GPL(auok190x_send_command_nowait); | |
182 | ||
183 | void auok190x_send_cmdargs_nowait(struct auok190xfb_par *par, u16 cmd, | |
184 | int argc, u16 *argv) | |
185 | { | |
186 | int i; | |
187 | ||
188 | par->board->set_ctl(par, AUOK190X_I80_CS, 0); | |
189 | auok190x_issue_cmd(par, cmd); | |
190 | ||
191 | for (i = 0; i < argc; i++) | |
192 | auok190x_issue_data(par, argv[i]); | |
193 | par->board->set_ctl(par, AUOK190X_I80_CS, 1); | |
194 | } | |
195 | EXPORT_SYMBOL_GPL(auok190x_send_cmdargs_nowait); | |
196 | ||
197 | int auok190x_send_command(struct auok190xfb_par *par, u16 data) | |
198 | { | |
199 | int ret; | |
200 | ||
201 | ret = par->board->wait_for_rdy(par); | |
202 | if (ret) | |
203 | return ret; | |
204 | ||
205 | auok190x_send_command_nowait(par, data); | |
206 | return 0; | |
207 | } | |
208 | EXPORT_SYMBOL_GPL(auok190x_send_command); | |
209 | ||
210 | int auok190x_send_cmdargs(struct auok190xfb_par *par, u16 cmd, | |
211 | int argc, u16 *argv) | |
212 | { | |
213 | int ret; | |
214 | ||
215 | ret = par->board->wait_for_rdy(par); | |
216 | if (ret) | |
217 | return ret; | |
218 | ||
219 | auok190x_send_cmdargs_nowait(par, cmd, argc, argv); | |
220 | return 0; | |
221 | } | |
222 | EXPORT_SYMBOL_GPL(auok190x_send_cmdargs); | |
223 | ||
224 | int auok190x_read_cmdargs(struct auok190xfb_par *par, u16 cmd, | |
225 | int argc, u16 *argv) | |
226 | { | |
227 | int i, ret; | |
228 | ||
229 | ret = par->board->wait_for_rdy(par); | |
230 | if (ret) | |
231 | return ret; | |
232 | ||
233 | par->board->set_ctl(par, AUOK190X_I80_CS, 0); | |
234 | auok190x_issue_cmd(par, cmd); | |
235 | ||
236 | for (i = 0; i < argc; i++) | |
237 | argv[i] = auok190x_read_data(par); | |
238 | par->board->set_ctl(par, AUOK190X_I80_CS, 1); | |
239 | ||
240 | return 0; | |
241 | } | |
242 | EXPORT_SYMBOL_GPL(auok190x_read_cmdargs); | |
243 | ||
244 | void auok190x_send_cmdargs_pixels_nowait(struct auok190xfb_par *par, u16 cmd, | |
245 | int argc, u16 *argv, int size, u16 *data) | |
246 | { | |
247 | int i; | |
248 | ||
249 | par->board->set_ctl(par, AUOK190X_I80_CS, 0); | |
250 | ||
251 | auok190x_issue_cmd(par, cmd); | |
252 | ||
253 | for (i = 0; i < argc; i++) | |
254 | auok190x_issue_data(par, argv[i]); | |
255 | ||
256 | auok190x_issue_pixels(par, size, data); | |
257 | ||
258 | par->board->set_ctl(par, AUOK190X_I80_CS, 1); | |
259 | } | |
260 | EXPORT_SYMBOL_GPL(auok190x_send_cmdargs_pixels_nowait); | |
261 | ||
262 | int auok190x_send_cmdargs_pixels(struct auok190xfb_par *par, u16 cmd, | |
263 | int argc, u16 *argv, int size, u16 *data) | |
264 | { | |
265 | int ret; | |
266 | ||
267 | ret = par->board->wait_for_rdy(par); | |
268 | if (ret) | |
269 | return ret; | |
270 | ||
271 | auok190x_send_cmdargs_pixels_nowait(par, cmd, argc, argv, size, data); | |
272 | ||
273 | return 0; | |
274 | } | |
275 | EXPORT_SYMBOL_GPL(auok190x_send_cmdargs_pixels); | |
276 | ||
277 | /* | |
278 | * fbdefio callbacks - common on both controllers. | |
279 | */ | |
280 | ||
281 | static void auok190xfb_dpy_first_io(struct fb_info *info) | |
282 | { | |
283 | /* tell runtime-pm that we wish to use the device in a short time */ | |
284 | pm_runtime_get(info->device); | |
285 | } | |
286 | ||
287 | /* this is called back from the deferred io workqueue */ | |
288 | static void auok190xfb_dpy_deferred_io(struct fb_info *info, | |
289 | struct list_head *pagelist) | |
290 | { | |
291 | struct fb_deferred_io *fbdefio = info->fbdefio; | |
292 | struct auok190xfb_par *par = info->par; | |
a1655100 | 293 | u16 line_length = info->fix.line_length; |
2c8304d3 | 294 | u16 yres = info->var.yres; |
2c8304d3 HS |
295 | u16 y1 = 0, h = 0; |
296 | int prev_index = -1; | |
297 | struct page *cur; | |
298 | int h_inc; | |
299 | int threshold; | |
300 | ||
301 | if (!list_empty(pagelist)) | |
302 | /* the device resume should've been requested through first_io, | |
303 | * if the resume did not finish until now, wait for it. | |
304 | */ | |
305 | pm_runtime_barrier(info->device); | |
306 | else | |
307 | /* We reached this via the fsync or some other way. | |
308 | * In either case the first_io function did not run, | |
309 | * so we runtime_resume the device here synchronously. | |
310 | */ | |
311 | pm_runtime_get_sync(info->device); | |
312 | ||
313 | /* Do a full screen update every n updates to prevent | |
314 | * excessive darkening of the Sipix display. | |
315 | * If we do this, there is no need to walk the pages. | |
316 | */ | |
317 | if (par->need_refresh(par)) { | |
318 | par->update_all(par); | |
319 | goto out; | |
320 | } | |
321 | ||
322 | /* height increment is fixed per page */ | |
a1655100 | 323 | h_inc = DIV_ROUND_UP(PAGE_SIZE , line_length); |
2c8304d3 HS |
324 | |
325 | /* calculate number of pages from pixel height */ | |
326 | threshold = par->consecutive_threshold / h_inc; | |
327 | if (threshold < 1) | |
328 | threshold = 1; | |
329 | ||
330 | /* walk the written page list and swizzle the data */ | |
331 | list_for_each_entry(cur, &fbdefio->pagelist, lru) { | |
332 | if (prev_index < 0) { | |
333 | /* just starting so assign first page */ | |
a1655100 | 334 | y1 = (cur->index << PAGE_SHIFT) / line_length; |
2c8304d3 HS |
335 | h = h_inc; |
336 | } else if ((cur->index - prev_index) <= threshold) { | |
337 | /* page is within our threshold for single updates */ | |
338 | h += h_inc * (cur->index - prev_index); | |
339 | } else { | |
340 | /* page not consecutive, issue previous update first */ | |
341 | par->update_partial(par, y1, y1 + h); | |
342 | ||
343 | /* start over with our non consecutive page */ | |
a1655100 | 344 | y1 = (cur->index << PAGE_SHIFT) / line_length; |
2c8304d3 HS |
345 | h = h_inc; |
346 | } | |
347 | prev_index = cur->index; | |
348 | } | |
349 | ||
350 | /* if we still have any pages to update we do so now */ | |
351 | if (h >= yres) | |
352 | /* its a full screen update, just do it */ | |
353 | par->update_all(par); | |
354 | else | |
355 | par->update_partial(par, y1, min((u16) (y1 + h), yres)); | |
356 | ||
357 | out: | |
358 | pm_runtime_mark_last_busy(info->device); | |
359 | pm_runtime_put_autosuspend(info->device); | |
360 | } | |
361 | ||
362 | /* | |
363 | * framebuffer operations | |
364 | */ | |
365 | ||
366 | /* | |
367 | * this is the slow path from userspace. they can seek and write to | |
368 | * the fb. it's inefficient to do anything less than a full screen draw | |
369 | */ | |
370 | static ssize_t auok190xfb_write(struct fb_info *info, const char __user *buf, | |
371 | size_t count, loff_t *ppos) | |
372 | { | |
373 | struct auok190xfb_par *par = info->par; | |
374 | unsigned long p = *ppos; | |
375 | void *dst; | |
376 | int err = 0; | |
377 | unsigned long total_size; | |
378 | ||
379 | if (info->state != FBINFO_STATE_RUNNING) | |
380 | return -EPERM; | |
381 | ||
382 | total_size = info->fix.smem_len; | |
383 | ||
384 | if (p > total_size) | |
385 | return -EFBIG; | |
386 | ||
387 | if (count > total_size) { | |
388 | err = -EFBIG; | |
389 | count = total_size; | |
390 | } | |
391 | ||
392 | if (count + p > total_size) { | |
393 | if (!err) | |
394 | err = -ENOSPC; | |
395 | ||
396 | count = total_size - p; | |
397 | } | |
398 | ||
399 | dst = (void *)(info->screen_base + p); | |
400 | ||
401 | if (copy_from_user(dst, buf, count)) | |
402 | err = -EFAULT; | |
403 | ||
404 | if (!err) | |
405 | *ppos += count; | |
406 | ||
407 | par->update_all(par); | |
408 | ||
409 | return (err) ? err : count; | |
410 | } | |
411 | ||
412 | static void auok190xfb_fillrect(struct fb_info *info, | |
413 | const struct fb_fillrect *rect) | |
414 | { | |
415 | struct auok190xfb_par *par = info->par; | |
416 | ||
417 | sys_fillrect(info, rect); | |
418 | ||
419 | par->update_all(par); | |
420 | } | |
421 | ||
422 | static void auok190xfb_copyarea(struct fb_info *info, | |
423 | const struct fb_copyarea *area) | |
424 | { | |
425 | struct auok190xfb_par *par = info->par; | |
426 | ||
427 | sys_copyarea(info, area); | |
428 | ||
429 | par->update_all(par); | |
430 | } | |
431 | ||
432 | static void auok190xfb_imageblit(struct fb_info *info, | |
433 | const struct fb_image *image) | |
434 | { | |
435 | struct auok190xfb_par *par = info->par; | |
436 | ||
437 | sys_imageblit(info, image); | |
438 | ||
439 | par->update_all(par); | |
440 | } | |
441 | ||
442 | static int auok190xfb_check_var(struct fb_var_screeninfo *var, | |
443 | struct fb_info *info) | |
444 | { | |
03fc1499 | 445 | struct device *dev = info->device; |
4ea80d35 HS |
446 | struct auok190xfb_par *par = info->par; |
447 | struct panel_info *panel = &panel_table[par->resolution]; | |
03fc1499 HS |
448 | int size; |
449 | ||
76de404b HS |
450 | /* |
451 | * Color depth | |
452 | */ | |
453 | ||
454 | if (var->bits_per_pixel == 8 && var->grayscale == 1) { | |
455 | /* | |
456 | * For 8-bit grayscale, R, G, and B offset are equal. | |
457 | */ | |
458 | var->red.length = 8; | |
459 | var->red.offset = 0; | |
460 | var->red.msb_right = 0; | |
461 | ||
462 | var->green.length = 8; | |
463 | var->green.offset = 0; | |
464 | var->green.msb_right = 0; | |
465 | ||
466 | var->blue.length = 8; | |
467 | var->blue.offset = 0; | |
468 | var->blue.msb_right = 0; | |
469 | ||
46574c72 HS |
470 | var->transp.length = 0; |
471 | var->transp.offset = 0; | |
472 | var->transp.msb_right = 0; | |
473 | } else if (var->bits_per_pixel == 16) { | |
474 | var->red.length = 5; | |
475 | var->red.offset = 11; | |
476 | var->red.msb_right = 0; | |
477 | ||
478 | var->green.length = 6; | |
479 | var->green.offset = 5; | |
480 | var->green.msb_right = 0; | |
481 | ||
482 | var->blue.length = 5; | |
483 | var->blue.offset = 0; | |
484 | var->blue.msb_right = 0; | |
485 | ||
76de404b HS |
486 | var->transp.length = 0; |
487 | var->transp.offset = 0; | |
488 | var->transp.msb_right = 0; | |
489 | } else { | |
490 | dev_warn(dev, "unsupported color mode (bits: %d, grayscale: %d)\n", | |
491 | info->var.bits_per_pixel, info->var.grayscale); | |
492 | return -EINVAL; | |
493 | } | |
494 | ||
4ea80d35 HS |
495 | /* |
496 | * Dimensions | |
497 | */ | |
498 | ||
fd3871aa HS |
499 | switch (var->rotate) { |
500 | case FB_ROTATE_UR: | |
501 | case FB_ROTATE_UD: | |
4ea80d35 HS |
502 | var->xres = panel->w; |
503 | var->yres = panel->h; | |
fd3871aa HS |
504 | break; |
505 | case FB_ROTATE_CW: | |
506 | case FB_ROTATE_CCW: | |
507 | var->xres = panel->h; | |
508 | var->yres = panel->w; | |
509 | break; | |
510 | default: | |
511 | dev_dbg(dev, "Invalid rotation request\n"); | |
512 | return -EINVAL; | |
2c8304d3 HS |
513 | } |
514 | ||
4ea80d35 HS |
515 | var->xres_virtual = var->xres; |
516 | var->yres_virtual = var->yres; | |
517 | ||
2c8304d3 HS |
518 | /* |
519 | * Memory limit | |
520 | */ | |
521 | ||
03fc1499 HS |
522 | size = var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8; |
523 | if (size > info->fix.smem_len) { | |
524 | dev_err(dev, "Memory limit exceeded, requested %dK\n", | |
525 | size >> 10); | |
2c8304d3 HS |
526 | return -ENOMEM; |
527 | } | |
528 | ||
529 | return 0; | |
530 | } | |
531 | ||
76de404b HS |
532 | static int auok190xfb_set_fix(struct fb_info *info) |
533 | { | |
534 | struct fb_fix_screeninfo *fix = &info->fix; | |
535 | struct fb_var_screeninfo *var = &info->var; | |
536 | ||
537 | fix->line_length = var->xres_virtual * var->bits_per_pixel / 8; | |
538 | ||
539 | fix->type = FB_TYPE_PACKED_PIXELS; | |
540 | fix->accel = FB_ACCEL_NONE; | |
541 | fix->visual = (var->grayscale) ? FB_VISUAL_STATIC_PSEUDOCOLOR | |
542 | : FB_VISUAL_TRUECOLOR; | |
543 | fix->xpanstep = 0; | |
544 | fix->ypanstep = 0; | |
545 | fix->ywrapstep = 0; | |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
46574c72 HS |
550 | static int auok190xfb_set_par(struct fb_info *info) |
551 | { | |
552 | struct auok190xfb_par *par = info->par; | |
553 | ||
fd3871aa | 554 | par->rotation = info->var.rotate; |
46574c72 HS |
555 | auok190xfb_set_fix(info); |
556 | ||
fd3871aa HS |
557 | /* reinit the controller to honor the rotation */ |
558 | par->init(par); | |
559 | ||
560 | /* wait for init to complete */ | |
561 | par->board->wait_for_rdy(par); | |
562 | ||
46574c72 HS |
563 | return 0; |
564 | } | |
565 | ||
2c8304d3 HS |
566 | static struct fb_ops auok190xfb_ops = { |
567 | .owner = THIS_MODULE, | |
568 | .fb_read = fb_sys_read, | |
569 | .fb_write = auok190xfb_write, | |
570 | .fb_fillrect = auok190xfb_fillrect, | |
571 | .fb_copyarea = auok190xfb_copyarea, | |
572 | .fb_imageblit = auok190xfb_imageblit, | |
573 | .fb_check_var = auok190xfb_check_var, | |
46574c72 | 574 | .fb_set_par = auok190xfb_set_par, |
2c8304d3 HS |
575 | }; |
576 | ||
577 | /* | |
578 | * Controller-functions common to both K1900 and K1901 | |
579 | */ | |
580 | ||
581 | static int auok190x_read_temperature(struct auok190xfb_par *par) | |
582 | { | |
583 | struct device *dev = par->info->device; | |
584 | u16 data[4]; | |
585 | int temp; | |
586 | ||
587 | pm_runtime_get_sync(dev); | |
588 | ||
589 | mutex_lock(&(par->io_lock)); | |
590 | ||
591 | auok190x_read_cmdargs(par, AUOK190X_CMD_READ_VERSION, 4, data); | |
592 | ||
593 | mutex_unlock(&(par->io_lock)); | |
594 | ||
595 | pm_runtime_mark_last_busy(dev); | |
596 | pm_runtime_put_autosuspend(dev); | |
597 | ||
598 | /* sanitize and split of half-degrees for now */ | |
599 | temp = ((data[0] & AUOK190X_VERSION_TEMP_MASK) >> 1); | |
600 | ||
601 | /* handle positive and negative temperatures */ | |
602 | if (temp >= 201) | |
603 | return (255 - temp + 1) * (-1); | |
604 | else | |
605 | return temp; | |
606 | } | |
607 | ||
608 | static void auok190x_identify(struct auok190xfb_par *par) | |
609 | { | |
610 | struct device *dev = par->info->device; | |
611 | u16 data[4]; | |
612 | ||
613 | pm_runtime_get_sync(dev); | |
614 | ||
615 | mutex_lock(&(par->io_lock)); | |
616 | ||
617 | auok190x_read_cmdargs(par, AUOK190X_CMD_READ_VERSION, 4, data); | |
618 | ||
619 | mutex_unlock(&(par->io_lock)); | |
620 | ||
621 | par->epd_type = data[1] & AUOK190X_VERSION_TEMP_MASK; | |
622 | ||
623 | par->panel_size_int = AUOK190X_VERSION_SIZE_INT(data[2]); | |
624 | par->panel_size_float = AUOK190X_VERSION_SIZE_FLOAT(data[2]); | |
625 | par->panel_model = AUOK190X_VERSION_MODEL(data[2]); | |
626 | ||
627 | par->tcon_version = AUOK190X_VERSION_TCON(data[3]); | |
628 | par->lut_version = AUOK190X_VERSION_LUT(data[3]); | |
629 | ||
630 | dev_dbg(dev, "panel %d.%din, model 0x%x, EPD 0x%x TCON-rev 0x%x, LUT-rev 0x%x", | |
631 | par->panel_size_int, par->panel_size_float, par->panel_model, | |
632 | par->epd_type, par->tcon_version, par->lut_version); | |
633 | ||
634 | pm_runtime_mark_last_busy(dev); | |
635 | pm_runtime_put_autosuspend(dev); | |
636 | } | |
637 | ||
638 | /* | |
639 | * Sysfs functions | |
640 | */ | |
641 | ||
642 | static ssize_t update_mode_show(struct device *dev, | |
643 | struct device_attribute *attr, char *buf) | |
644 | { | |
645 | struct fb_info *info = dev_get_drvdata(dev); | |
646 | struct auok190xfb_par *par = info->par; | |
647 | ||
648 | return sprintf(buf, "%d\n", par->update_mode); | |
649 | } | |
650 | ||
651 | static ssize_t update_mode_store(struct device *dev, | |
652 | struct device_attribute *attr, | |
653 | const char *buf, size_t count) | |
654 | { | |
655 | struct fb_info *info = dev_get_drvdata(dev); | |
656 | struct auok190xfb_par *par = info->par; | |
657 | int mode, ret; | |
658 | ||
659 | ret = kstrtoint(buf, 10, &mode); | |
660 | if (ret) | |
661 | return ret; | |
662 | ||
663 | par->update_mode = mode; | |
664 | ||
665 | /* if we enter a better mode, do a full update */ | |
666 | if (par->last_mode > 1 && mode < par->last_mode) | |
667 | par->update_all(par); | |
668 | ||
669 | return count; | |
670 | } | |
671 | ||
672 | static ssize_t flash_show(struct device *dev, struct device_attribute *attr, | |
673 | char *buf) | |
674 | { | |
675 | struct fb_info *info = dev_get_drvdata(dev); | |
676 | struct auok190xfb_par *par = info->par; | |
677 | ||
678 | return sprintf(buf, "%d\n", par->flash); | |
679 | } | |
680 | ||
681 | static ssize_t flash_store(struct device *dev, struct device_attribute *attr, | |
682 | const char *buf, size_t count) | |
683 | { | |
684 | struct fb_info *info = dev_get_drvdata(dev); | |
685 | struct auok190xfb_par *par = info->par; | |
686 | int flash, ret; | |
687 | ||
688 | ret = kstrtoint(buf, 10, &flash); | |
689 | if (ret) | |
690 | return ret; | |
691 | ||
692 | if (flash > 0) | |
693 | par->flash = 1; | |
694 | else | |
695 | par->flash = 0; | |
696 | ||
697 | return count; | |
698 | } | |
699 | ||
700 | static ssize_t temp_show(struct device *dev, struct device_attribute *attr, | |
701 | char *buf) | |
702 | { | |
703 | struct fb_info *info = dev_get_drvdata(dev); | |
704 | struct auok190xfb_par *par = info->par; | |
705 | int temp; | |
706 | ||
707 | temp = auok190x_read_temperature(par); | |
708 | return sprintf(buf, "%d\n", temp); | |
709 | } | |
710 | ||
711 | static DEVICE_ATTR(update_mode, 0644, update_mode_show, update_mode_store); | |
712 | static DEVICE_ATTR(flash, 0644, flash_show, flash_store); | |
713 | static DEVICE_ATTR(temp, 0644, temp_show, NULL); | |
714 | ||
715 | static struct attribute *auok190x_attributes[] = { | |
716 | &dev_attr_update_mode.attr, | |
717 | &dev_attr_flash.attr, | |
718 | &dev_attr_temp.attr, | |
719 | NULL | |
720 | }; | |
721 | ||
722 | static const struct attribute_group auok190x_attr_group = { | |
723 | .attrs = auok190x_attributes, | |
724 | }; | |
725 | ||
726 | static int auok190x_power(struct auok190xfb_par *par, bool on) | |
727 | { | |
728 | struct auok190x_board *board = par->board; | |
729 | int ret; | |
730 | ||
731 | if (on) { | |
732 | /* We should maintain POWER up for at least 80ms before set | |
733 | * RST_N and SLP_N to high (TCON spec 20100803_v35 p59) | |
734 | */ | |
735 | ret = regulator_enable(par->regulator); | |
736 | if (ret) | |
737 | return ret; | |
738 | ||
739 | msleep(200); | |
740 | gpio_set_value(board->gpio_nrst, 1); | |
741 | gpio_set_value(board->gpio_nsleep, 1); | |
742 | msleep(200); | |
743 | } else { | |
744 | regulator_disable(par->regulator); | |
745 | gpio_set_value(board->gpio_nrst, 0); | |
746 | gpio_set_value(board->gpio_nsleep, 0); | |
747 | } | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | /* | |
753 | * Recovery - powercycle the controller | |
754 | */ | |
755 | ||
756 | static void auok190x_recover(struct auok190xfb_par *par) | |
757 | { | |
4e0ab85b HS |
758 | struct device *dev = par->info->device; |
759 | ||
2c8304d3 HS |
760 | auok190x_power(par, 0); |
761 | msleep(100); | |
762 | auok190x_power(par, 1); | |
763 | ||
4e0ab85b HS |
764 | /* after powercycling the device, it's always active */ |
765 | pm_runtime_set_active(dev); | |
766 | par->standby = 0; | |
767 | ||
2c8304d3 HS |
768 | par->init(par); |
769 | ||
770 | /* wait for init to complete */ | |
771 | par->board->wait_for_rdy(par); | |
772 | } | |
773 | ||
774 | /* | |
775 | * Power-management | |
776 | */ | |
a8a31afa | 777 | static int __maybe_unused auok190x_runtime_suspend(struct device *dev) |
2c8304d3 HS |
778 | { |
779 | struct platform_device *pdev = to_platform_device(dev); | |
780 | struct fb_info *info = platform_get_drvdata(pdev); | |
781 | struct auok190xfb_par *par = info->par; | |
782 | struct auok190x_board *board = par->board; | |
783 | u16 standby_param; | |
784 | ||
785 | /* take and keep the lock until we are resumed, as the controller | |
786 | * will never reach the non-busy state when in standby mode | |
787 | */ | |
788 | mutex_lock(&(par->io_lock)); | |
789 | ||
790 | if (par->standby) { | |
791 | dev_warn(dev, "already in standby, runtime-pm pairing mismatch\n"); | |
792 | mutex_unlock(&(par->io_lock)); | |
793 | return 0; | |
794 | } | |
795 | ||
796 | /* according to runtime_pm.txt runtime_suspend only means, that the | |
797 | * device will not process data and will not communicate with the CPU | |
798 | * As we hold the lock, this stays true even without standby | |
799 | */ | |
800 | if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) { | |
801 | dev_dbg(dev, "runtime suspend without standby\n"); | |
802 | goto finish; | |
803 | } else if (board->quirks & AUOK190X_QUIRK_STANDBYPARAM) { | |
804 | /* for some TCON versions STANDBY expects a parameter (0) but | |
805 | * it seems the real tcon version has to be determined yet. | |
806 | */ | |
807 | dev_dbg(dev, "runtime suspend with additional empty param\n"); | |
808 | standby_param = 0; | |
809 | auok190x_send_cmdargs(par, AUOK190X_CMD_STANDBY, 1, | |
810 | &standby_param); | |
811 | } else { | |
812 | dev_dbg(dev, "runtime suspend without param\n"); | |
813 | auok190x_send_command(par, AUOK190X_CMD_STANDBY); | |
814 | } | |
815 | ||
816 | msleep(64); | |
817 | ||
818 | finish: | |
819 | par->standby = 1; | |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
a8a31afa | 824 | static int __maybe_unused auok190x_runtime_resume(struct device *dev) |
2c8304d3 HS |
825 | { |
826 | struct platform_device *pdev = to_platform_device(dev); | |
827 | struct fb_info *info = platform_get_drvdata(pdev); | |
828 | struct auok190xfb_par *par = info->par; | |
829 | struct auok190x_board *board = par->board; | |
830 | ||
831 | if (!par->standby) { | |
832 | dev_warn(dev, "not in standby, runtime-pm pairing mismatch\n"); | |
833 | return 0; | |
834 | } | |
835 | ||
836 | if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) { | |
837 | dev_dbg(dev, "runtime resume without standby\n"); | |
838 | } else { | |
839 | /* when in standby, controller is always busy | |
840 | * and only accepts the wakeup command | |
841 | */ | |
842 | dev_dbg(dev, "runtime resume from standby\n"); | |
843 | auok190x_send_command_nowait(par, AUOK190X_CMD_WAKEUP); | |
844 | ||
845 | msleep(160); | |
846 | ||
847 | /* wait for the controller to be ready and release the lock */ | |
848 | board->wait_for_rdy(par); | |
849 | } | |
850 | ||
851 | par->standby = 0; | |
852 | ||
853 | mutex_unlock(&(par->io_lock)); | |
854 | ||
855 | return 0; | |
856 | } | |
857 | ||
a8a31afa | 858 | static int __maybe_unused auok190x_suspend(struct device *dev) |
2c8304d3 HS |
859 | { |
860 | struct platform_device *pdev = to_platform_device(dev); | |
861 | struct fb_info *info = platform_get_drvdata(pdev); | |
862 | struct auok190xfb_par *par = info->par; | |
863 | struct auok190x_board *board = par->board; | |
864 | int ret; | |
865 | ||
866 | dev_dbg(dev, "suspend\n"); | |
867 | if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) { | |
868 | /* suspend via powering off the ic */ | |
869 | dev_dbg(dev, "suspend with broken standby\n"); | |
870 | ||
871 | auok190x_power(par, 0); | |
872 | } else { | |
873 | dev_dbg(dev, "suspend using sleep\n"); | |
874 | ||
875 | /* the sleep state can only be entered from the standby state. | |
876 | * pm_runtime_get_noresume gets called before the suspend call. | |
877 | * So the devices usage count is >0 but it is not necessarily | |
878 | * active. | |
879 | */ | |
880 | if (!pm_runtime_status_suspended(dev)) { | |
881 | ret = auok190x_runtime_suspend(dev); | |
882 | if (ret < 0) { | |
883 | dev_err(dev, "auok190x_runtime_suspend failed with %d\n", | |
884 | ret); | |
885 | return ret; | |
886 | } | |
887 | par->manual_standby = 1; | |
888 | } | |
889 | ||
890 | gpio_direction_output(board->gpio_nsleep, 0); | |
891 | } | |
892 | ||
893 | msleep(100); | |
894 | ||
895 | return 0; | |
896 | } | |
897 | ||
a8a31afa | 898 | static int __maybe_unused auok190x_resume(struct device *dev) |
2c8304d3 HS |
899 | { |
900 | struct platform_device *pdev = to_platform_device(dev); | |
901 | struct fb_info *info = platform_get_drvdata(pdev); | |
902 | struct auok190xfb_par *par = info->par; | |
903 | struct auok190x_board *board = par->board; | |
904 | ||
905 | dev_dbg(dev, "resume\n"); | |
906 | if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) { | |
907 | dev_dbg(dev, "resume with broken standby\n"); | |
908 | ||
909 | auok190x_power(par, 1); | |
910 | ||
911 | par->init(par); | |
912 | } else { | |
913 | dev_dbg(dev, "resume from sleep\n"); | |
914 | ||
915 | /* device should be in runtime suspend when we were suspended | |
916 | * and pm_runtime_put_sync gets called after this function. | |
917 | * So there is no need to touch the standby mode here at all. | |
918 | */ | |
919 | gpio_direction_output(board->gpio_nsleep, 1); | |
920 | msleep(100); | |
921 | ||
922 | /* an additional init call seems to be necessary after sleep */ | |
923 | auok190x_runtime_resume(dev); | |
924 | par->init(par); | |
925 | ||
926 | /* if we were runtime-suspended before, suspend again*/ | |
927 | if (!par->manual_standby) | |
928 | auok190x_runtime_suspend(dev); | |
929 | else | |
930 | par->manual_standby = 0; | |
931 | } | |
932 | ||
933 | return 0; | |
934 | } | |
2c8304d3 HS |
935 | |
936 | const struct dev_pm_ops auok190x_pm = { | |
937 | SET_RUNTIME_PM_OPS(auok190x_runtime_suspend, auok190x_runtime_resume, | |
938 | NULL) | |
939 | SET_SYSTEM_SLEEP_PM_OPS(auok190x_suspend, auok190x_resume) | |
940 | }; | |
941 | EXPORT_SYMBOL_GPL(auok190x_pm); | |
942 | ||
943 | /* | |
944 | * Common probe and remove code | |
945 | */ | |
946 | ||
48c68c4f GKH |
947 | int auok190x_common_probe(struct platform_device *pdev, |
948 | struct auok190x_init_data *init) | |
2c8304d3 HS |
949 | { |
950 | struct auok190x_board *board = init->board; | |
951 | struct auok190xfb_par *par; | |
952 | struct fb_info *info; | |
953 | struct panel_info *panel; | |
954 | int videomemorysize, ret; | |
955 | unsigned char *videomemory; | |
956 | ||
957 | /* check board contents */ | |
958 | if (!board->init || !board->cleanup || !board->wait_for_rdy | |
959 | || !board->set_ctl || !board->set_hdb || !board->get_hdb | |
960 | || !board->setup_irq) | |
961 | return -EINVAL; | |
962 | ||
963 | info = framebuffer_alloc(sizeof(struct auok190xfb_par), &pdev->dev); | |
964 | if (!info) | |
965 | return -ENOMEM; | |
966 | ||
967 | par = info->par; | |
968 | par->info = info; | |
969 | par->board = board; | |
970 | par->recover = auok190x_recover; | |
971 | par->update_partial = init->update_partial; | |
972 | par->update_all = init->update_all; | |
973 | par->need_refresh = init->need_refresh; | |
974 | par->init = init->init; | |
975 | ||
976 | /* init update modes */ | |
977 | par->update_cnt = 0; | |
978 | par->update_mode = -1; | |
979 | par->last_mode = -1; | |
980 | par->flash = 0; | |
981 | ||
982 | par->regulator = regulator_get(info->device, "vdd"); | |
983 | if (IS_ERR(par->regulator)) { | |
984 | ret = PTR_ERR(par->regulator); | |
985 | dev_err(info->device, "Failed to get regulator: %d\n", ret); | |
986 | goto err_reg; | |
987 | } | |
988 | ||
989 | ret = board->init(par); | |
990 | if (ret) { | |
991 | dev_err(info->device, "board init failed, %d\n", ret); | |
992 | goto err_board; | |
993 | } | |
994 | ||
995 | ret = gpio_request(board->gpio_nsleep, "AUOK190x sleep"); | |
996 | if (ret) { | |
997 | dev_err(info->device, "could not request sleep gpio, %d\n", | |
998 | ret); | |
999 | goto err_gpio1; | |
1000 | } | |
1001 | ||
1002 | ret = gpio_direction_output(board->gpio_nsleep, 0); | |
1003 | if (ret) { | |
1004 | dev_err(info->device, "could not set sleep gpio, %d\n", ret); | |
1005 | goto err_gpio2; | |
1006 | } | |
1007 | ||
1008 | ret = gpio_request(board->gpio_nrst, "AUOK190x reset"); | |
1009 | if (ret) { | |
1010 | dev_err(info->device, "could not request reset gpio, %d\n", | |
1011 | ret); | |
1012 | goto err_gpio2; | |
1013 | } | |
1014 | ||
1015 | ret = gpio_direction_output(board->gpio_nrst, 0); | |
1016 | if (ret) { | |
1017 | dev_err(info->device, "could not set reset gpio, %d\n", ret); | |
1018 | goto err_gpio3; | |
1019 | } | |
1020 | ||
1021 | ret = auok190x_power(par, 1); | |
1022 | if (ret) { | |
1023 | dev_err(info->device, "could not power on the device, %d\n", | |
1024 | ret); | |
1025 | goto err_gpio3; | |
1026 | } | |
1027 | ||
1028 | mutex_init(&par->io_lock); | |
1029 | ||
1030 | init_waitqueue_head(&par->waitq); | |
1031 | ||
1032 | ret = par->board->setup_irq(par->info); | |
1033 | if (ret) { | |
1034 | dev_err(info->device, "could not setup ready-irq, %d\n", ret); | |
1035 | goto err_irq; | |
1036 | } | |
1037 | ||
1038 | /* wait for init to complete */ | |
1039 | par->board->wait_for_rdy(par); | |
1040 | ||
1041 | /* | |
1042 | * From here on the controller can talk to us | |
1043 | */ | |
1044 | ||
1045 | /* initialise fix, var, resolution and rotation */ | |
1046 | ||
1047 | strlcpy(info->fix.id, init->id, 16); | |
2c8304d3 HS |
1048 | info->var.bits_per_pixel = 8; |
1049 | info->var.grayscale = 1; | |
2c8304d3 HS |
1050 | |
1051 | panel = &panel_table[board->resolution]; | |
1052 | ||
2c8304d3 | 1053 | par->resolution = board->resolution; |
fd3871aa | 1054 | par->rotation = 0; |
2c8304d3 HS |
1055 | |
1056 | /* videomemory handling */ | |
1057 | ||
46574c72 | 1058 | videomemorysize = roundup((panel->w * panel->h) * 2, PAGE_SIZE); |
2c8304d3 HS |
1059 | videomemory = vmalloc(videomemorysize); |
1060 | if (!videomemory) { | |
1061 | ret = -ENOMEM; | |
1062 | goto err_irq; | |
1063 | } | |
1064 | ||
1065 | memset(videomemory, 0, videomemorysize); | |
1066 | info->screen_base = (char *)videomemory; | |
1067 | info->fix.smem_len = videomemorysize; | |
1068 | ||
1069 | info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB; | |
1070 | info->fbops = &auok190xfb_ops; | |
1071 | ||
4ea80d35 HS |
1072 | ret = auok190xfb_check_var(&info->var, info); |
1073 | if (ret) | |
1074 | goto err_defio; | |
1075 | ||
76de404b | 1076 | auok190xfb_set_fix(info); |
4ea80d35 | 1077 | |
2c8304d3 HS |
1078 | /* deferred io init */ |
1079 | ||
1080 | info->fbdefio = devm_kzalloc(info->device, | |
1081 | sizeof(struct fb_deferred_io), | |
1082 | GFP_KERNEL); | |
1083 | if (!info->fbdefio) { | |
1084 | dev_err(info->device, "Failed to allocate memory\n"); | |
1085 | ret = -ENOMEM; | |
1086 | goto err_defio; | |
1087 | } | |
1088 | ||
a895d57d | 1089 | dev_dbg(info->device, "targeting %d frames per second\n", board->fps); |
2c8304d3 HS |
1090 | info->fbdefio->delay = HZ / board->fps; |
1091 | info->fbdefio->first_io = auok190xfb_dpy_first_io, | |
1092 | info->fbdefio->deferred_io = auok190xfb_dpy_deferred_io, | |
1093 | fb_deferred_io_init(info); | |
1094 | ||
1095 | /* color map */ | |
1096 | ||
1097 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | |
1098 | if (ret < 0) { | |
1099 | dev_err(info->device, "Failed to allocate colormap\n"); | |
1100 | goto err_cmap; | |
1101 | } | |
1102 | ||
1103 | /* controller init */ | |
1104 | ||
1105 | par->consecutive_threshold = 100; | |
1106 | par->init(par); | |
1107 | auok190x_identify(par); | |
1108 | ||
1109 | platform_set_drvdata(pdev, info); | |
1110 | ||
1111 | ret = register_framebuffer(info); | |
1112 | if (ret < 0) | |
1113 | goto err_regfb; | |
1114 | ||
1115 | ret = sysfs_create_group(&info->device->kobj, &auok190x_attr_group); | |
1116 | if (ret) | |
1117 | goto err_sysfs; | |
1118 | ||
1119 | dev_info(info->device, "fb%d: %dx%d using %dK of video memory\n", | |
1120 | info->node, info->var.xres, info->var.yres, | |
1121 | videomemorysize >> 10); | |
1122 | ||
1123 | /* increase autosuspend_delay when we use alternative methods | |
1124 | * for runtime_pm | |
1125 | */ | |
1126 | par->autosuspend_delay = (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) | |
1127 | ? 1000 : 200; | |
1128 | ||
1129 | pm_runtime_set_active(info->device); | |
1130 | pm_runtime_enable(info->device); | |
1131 | pm_runtime_set_autosuspend_delay(info->device, par->autosuspend_delay); | |
1132 | pm_runtime_use_autosuspend(info->device); | |
1133 | ||
1134 | return 0; | |
1135 | ||
1136 | err_sysfs: | |
1137 | unregister_framebuffer(info); | |
1138 | err_regfb: | |
1139 | fb_dealloc_cmap(&info->cmap); | |
1140 | err_cmap: | |
1141 | fb_deferred_io_cleanup(info); | |
2c8304d3 HS |
1142 | err_defio: |
1143 | vfree((void *)info->screen_base); | |
1144 | err_irq: | |
1145 | auok190x_power(par, 0); | |
1146 | err_gpio3: | |
1147 | gpio_free(board->gpio_nrst); | |
1148 | err_gpio2: | |
1149 | gpio_free(board->gpio_nsleep); | |
1150 | err_gpio1: | |
1151 | board->cleanup(par); | |
1152 | err_board: | |
1153 | regulator_put(par->regulator); | |
1154 | err_reg: | |
1155 | framebuffer_release(info); | |
1156 | ||
1157 | return ret; | |
1158 | } | |
1159 | EXPORT_SYMBOL_GPL(auok190x_common_probe); | |
1160 | ||
48c68c4f | 1161 | int auok190x_common_remove(struct platform_device *pdev) |
2c8304d3 HS |
1162 | { |
1163 | struct fb_info *info = platform_get_drvdata(pdev); | |
1164 | struct auok190xfb_par *par = info->par; | |
1165 | struct auok190x_board *board = par->board; | |
1166 | ||
1167 | pm_runtime_disable(info->device); | |
1168 | ||
1169 | sysfs_remove_group(&info->device->kobj, &auok190x_attr_group); | |
1170 | ||
1171 | unregister_framebuffer(info); | |
1172 | ||
1173 | fb_dealloc_cmap(&info->cmap); | |
1174 | ||
1175 | fb_deferred_io_cleanup(info); | |
2c8304d3 HS |
1176 | |
1177 | vfree((void *)info->screen_base); | |
1178 | ||
1179 | auok190x_power(par, 0); | |
1180 | ||
1181 | gpio_free(board->gpio_nrst); | |
1182 | gpio_free(board->gpio_nsleep); | |
1183 | ||
1184 | board->cleanup(par); | |
1185 | ||
1186 | regulator_put(par->regulator); | |
1187 | ||
1188 | framebuffer_release(info); | |
1189 | ||
1190 | return 0; | |
1191 | } | |
1192 | EXPORT_SYMBOL_GPL(auok190x_common_remove); | |
1193 | ||
1194 | MODULE_DESCRIPTION("Common code for AUO-K190X controllers"); | |
1195 | MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>"); | |
1196 | MODULE_LICENSE("GPL"); |