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