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Commit | Line | Data |
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ee378a5c ID |
1 | /* |
2 | * S6E63M0 AMOLED LCD panel driver. | |
3 | * | |
4 | * Author: InKi Dae <inki.dae@samsung.com> | |
5 | * | |
6 | * Derived from drivers/video/omap/lcd-apollon.c | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
ee378a5c ID |
12 | */ |
13 | ||
f5cede7c | 14 | #include <linux/backlight.h> |
ee378a5c | 15 | #include <linux/delay.h> |
f5cede7c | 16 | #include <linux/fb.h> |
ee378a5c | 17 | #include <linux/gpio.h> |
ee378a5c | 18 | #include <linux/interrupt.h> |
f5cede7c | 19 | #include <linux/irq.h> |
ee378a5c ID |
20 | #include <linux/kernel.h> |
21 | #include <linux/lcd.h> | |
355b200b | 22 | #include <linux/module.h> |
f5cede7c JH |
23 | #include <linux/spi/spi.h> |
24 | #include <linux/wait.h> | |
ee378a5c ID |
25 | |
26 | #include "s6e63m0_gamma.h" | |
27 | ||
28 | #define SLEEPMSEC 0x1000 | |
29 | #define ENDDEF 0x2000 | |
30 | #define DEFMASK 0xFF00 | |
31 | #define COMMAND_ONLY 0xFE | |
32 | #define DATA_ONLY 0xFF | |
33 | ||
34 | #define MIN_BRIGHTNESS 0 | |
35 | #define MAX_BRIGHTNESS 10 | |
36 | ||
ee378a5c ID |
37 | struct s6e63m0 { |
38 | struct device *dev; | |
39 | struct spi_device *spi; | |
40 | unsigned int power; | |
41 | unsigned int current_brightness; | |
42 | unsigned int gamma_mode; | |
43 | unsigned int gamma_table_count; | |
44 | struct lcd_device *ld; | |
45 | struct backlight_device *bd; | |
46 | struct lcd_platform_data *lcd_pd; | |
47 | }; | |
48 | ||
4a959e59 | 49 | static const unsigned short seq_panel_condition_set[] = { |
ee378a5c ID |
50 | 0xF8, 0x01, |
51 | DATA_ONLY, 0x27, | |
52 | DATA_ONLY, 0x27, | |
53 | DATA_ONLY, 0x07, | |
54 | DATA_ONLY, 0x07, | |
55 | DATA_ONLY, 0x54, | |
56 | DATA_ONLY, 0x9f, | |
57 | DATA_ONLY, 0x63, | |
58 | DATA_ONLY, 0x86, | |
59 | DATA_ONLY, 0x1a, | |
60 | DATA_ONLY, 0x33, | |
61 | DATA_ONLY, 0x0d, | |
62 | DATA_ONLY, 0x00, | |
63 | DATA_ONLY, 0x00, | |
64 | ||
65 | ENDDEF, 0x0000 | |
66 | }; | |
67 | ||
4a959e59 | 68 | static const unsigned short seq_display_condition_set[] = { |
ee378a5c ID |
69 | 0xf2, 0x02, |
70 | DATA_ONLY, 0x03, | |
71 | DATA_ONLY, 0x1c, | |
72 | DATA_ONLY, 0x10, | |
73 | DATA_ONLY, 0x10, | |
74 | ||
75 | 0xf7, 0x03, | |
76 | DATA_ONLY, 0x00, | |
77 | DATA_ONLY, 0x00, | |
78 | ||
79 | ENDDEF, 0x0000 | |
80 | }; | |
81 | ||
4a959e59 | 82 | static const unsigned short seq_gamma_setting[] = { |
ee378a5c ID |
83 | 0xfa, 0x00, |
84 | DATA_ONLY, 0x18, | |
85 | DATA_ONLY, 0x08, | |
86 | DATA_ONLY, 0x24, | |
87 | DATA_ONLY, 0x64, | |
88 | DATA_ONLY, 0x56, | |
89 | DATA_ONLY, 0x33, | |
90 | DATA_ONLY, 0xb6, | |
91 | DATA_ONLY, 0xba, | |
92 | DATA_ONLY, 0xa8, | |
93 | DATA_ONLY, 0xac, | |
94 | DATA_ONLY, 0xb1, | |
95 | DATA_ONLY, 0x9d, | |
96 | DATA_ONLY, 0xc1, | |
97 | DATA_ONLY, 0xc1, | |
98 | DATA_ONLY, 0xb7, | |
99 | DATA_ONLY, 0x00, | |
100 | DATA_ONLY, 0x9c, | |
101 | DATA_ONLY, 0x00, | |
102 | DATA_ONLY, 0x9f, | |
103 | DATA_ONLY, 0x00, | |
104 | DATA_ONLY, 0xd6, | |
105 | ||
106 | 0xfa, 0x01, | |
107 | ||
108 | ENDDEF, 0x0000 | |
109 | }; | |
110 | ||
4a959e59 | 111 | static const unsigned short seq_etc_condition_set[] = { |
ee378a5c ID |
112 | 0xf6, 0x00, |
113 | DATA_ONLY, 0x8c, | |
114 | DATA_ONLY, 0x07, | |
115 | ||
116 | 0xb3, 0xc, | |
117 | ||
118 | 0xb5, 0x2c, | |
119 | DATA_ONLY, 0x12, | |
120 | DATA_ONLY, 0x0c, | |
121 | DATA_ONLY, 0x0a, | |
122 | DATA_ONLY, 0x10, | |
123 | DATA_ONLY, 0x0e, | |
124 | DATA_ONLY, 0x17, | |
125 | DATA_ONLY, 0x13, | |
126 | DATA_ONLY, 0x1f, | |
127 | DATA_ONLY, 0x1a, | |
128 | DATA_ONLY, 0x2a, | |
129 | DATA_ONLY, 0x24, | |
130 | DATA_ONLY, 0x1f, | |
131 | DATA_ONLY, 0x1b, | |
132 | DATA_ONLY, 0x1a, | |
133 | DATA_ONLY, 0x17, | |
134 | ||
135 | DATA_ONLY, 0x2b, | |
136 | DATA_ONLY, 0x26, | |
137 | DATA_ONLY, 0x22, | |
138 | DATA_ONLY, 0x20, | |
139 | DATA_ONLY, 0x3a, | |
140 | DATA_ONLY, 0x34, | |
141 | DATA_ONLY, 0x30, | |
142 | DATA_ONLY, 0x2c, | |
143 | DATA_ONLY, 0x29, | |
144 | DATA_ONLY, 0x26, | |
145 | DATA_ONLY, 0x25, | |
146 | DATA_ONLY, 0x23, | |
147 | DATA_ONLY, 0x21, | |
148 | DATA_ONLY, 0x20, | |
149 | DATA_ONLY, 0x1e, | |
150 | DATA_ONLY, 0x1e, | |
151 | ||
152 | 0xb6, 0x00, | |
153 | DATA_ONLY, 0x00, | |
154 | DATA_ONLY, 0x11, | |
155 | DATA_ONLY, 0x22, | |
156 | DATA_ONLY, 0x33, | |
157 | DATA_ONLY, 0x44, | |
158 | DATA_ONLY, 0x44, | |
159 | DATA_ONLY, 0x44, | |
160 | ||
161 | DATA_ONLY, 0x55, | |
162 | DATA_ONLY, 0x55, | |
163 | DATA_ONLY, 0x66, | |
164 | DATA_ONLY, 0x66, | |
165 | DATA_ONLY, 0x66, | |
166 | DATA_ONLY, 0x66, | |
167 | DATA_ONLY, 0x66, | |
168 | DATA_ONLY, 0x66, | |
169 | ||
170 | 0xb7, 0x2c, | |
171 | DATA_ONLY, 0x12, | |
172 | DATA_ONLY, 0x0c, | |
173 | DATA_ONLY, 0x0a, | |
174 | DATA_ONLY, 0x10, | |
175 | DATA_ONLY, 0x0e, | |
176 | DATA_ONLY, 0x17, | |
177 | DATA_ONLY, 0x13, | |
178 | DATA_ONLY, 0x1f, | |
179 | DATA_ONLY, 0x1a, | |
180 | DATA_ONLY, 0x2a, | |
181 | DATA_ONLY, 0x24, | |
182 | DATA_ONLY, 0x1f, | |
183 | DATA_ONLY, 0x1b, | |
184 | DATA_ONLY, 0x1a, | |
185 | DATA_ONLY, 0x17, | |
186 | ||
187 | DATA_ONLY, 0x2b, | |
188 | DATA_ONLY, 0x26, | |
189 | DATA_ONLY, 0x22, | |
190 | DATA_ONLY, 0x20, | |
191 | DATA_ONLY, 0x3a, | |
192 | DATA_ONLY, 0x34, | |
193 | DATA_ONLY, 0x30, | |
194 | DATA_ONLY, 0x2c, | |
195 | DATA_ONLY, 0x29, | |
196 | DATA_ONLY, 0x26, | |
197 | DATA_ONLY, 0x25, | |
198 | DATA_ONLY, 0x23, | |
199 | DATA_ONLY, 0x21, | |
200 | DATA_ONLY, 0x20, | |
201 | DATA_ONLY, 0x1e, | |
202 | DATA_ONLY, 0x1e, | |
203 | ||
204 | 0xb8, 0x00, | |
205 | DATA_ONLY, 0x00, | |
206 | DATA_ONLY, 0x11, | |
207 | DATA_ONLY, 0x22, | |
208 | DATA_ONLY, 0x33, | |
209 | DATA_ONLY, 0x44, | |
210 | DATA_ONLY, 0x44, | |
211 | DATA_ONLY, 0x44, | |
212 | ||
213 | DATA_ONLY, 0x55, | |
214 | DATA_ONLY, 0x55, | |
215 | DATA_ONLY, 0x66, | |
216 | DATA_ONLY, 0x66, | |
217 | DATA_ONLY, 0x66, | |
218 | DATA_ONLY, 0x66, | |
219 | DATA_ONLY, 0x66, | |
220 | DATA_ONLY, 0x66, | |
221 | ||
222 | 0xb9, 0x2c, | |
223 | DATA_ONLY, 0x12, | |
224 | DATA_ONLY, 0x0c, | |
225 | DATA_ONLY, 0x0a, | |
226 | DATA_ONLY, 0x10, | |
227 | DATA_ONLY, 0x0e, | |
228 | DATA_ONLY, 0x17, | |
229 | DATA_ONLY, 0x13, | |
230 | DATA_ONLY, 0x1f, | |
231 | DATA_ONLY, 0x1a, | |
232 | DATA_ONLY, 0x2a, | |
233 | DATA_ONLY, 0x24, | |
234 | DATA_ONLY, 0x1f, | |
235 | DATA_ONLY, 0x1b, | |
236 | DATA_ONLY, 0x1a, | |
237 | DATA_ONLY, 0x17, | |
238 | ||
239 | DATA_ONLY, 0x2b, | |
240 | DATA_ONLY, 0x26, | |
241 | DATA_ONLY, 0x22, | |
242 | DATA_ONLY, 0x20, | |
243 | DATA_ONLY, 0x3a, | |
244 | DATA_ONLY, 0x34, | |
245 | DATA_ONLY, 0x30, | |
246 | DATA_ONLY, 0x2c, | |
247 | DATA_ONLY, 0x29, | |
248 | DATA_ONLY, 0x26, | |
249 | DATA_ONLY, 0x25, | |
250 | DATA_ONLY, 0x23, | |
251 | DATA_ONLY, 0x21, | |
252 | DATA_ONLY, 0x20, | |
253 | DATA_ONLY, 0x1e, | |
254 | DATA_ONLY, 0x1e, | |
255 | ||
256 | 0xba, 0x00, | |
257 | DATA_ONLY, 0x00, | |
258 | DATA_ONLY, 0x11, | |
259 | DATA_ONLY, 0x22, | |
260 | DATA_ONLY, 0x33, | |
261 | DATA_ONLY, 0x44, | |
262 | DATA_ONLY, 0x44, | |
263 | DATA_ONLY, 0x44, | |
264 | ||
265 | DATA_ONLY, 0x55, | |
266 | DATA_ONLY, 0x55, | |
267 | DATA_ONLY, 0x66, | |
268 | DATA_ONLY, 0x66, | |
269 | DATA_ONLY, 0x66, | |
270 | DATA_ONLY, 0x66, | |
271 | DATA_ONLY, 0x66, | |
272 | DATA_ONLY, 0x66, | |
273 | ||
274 | 0xc1, 0x4d, | |
275 | DATA_ONLY, 0x96, | |
276 | DATA_ONLY, 0x1d, | |
277 | DATA_ONLY, 0x00, | |
278 | DATA_ONLY, 0x00, | |
279 | DATA_ONLY, 0x01, | |
280 | DATA_ONLY, 0xdf, | |
281 | DATA_ONLY, 0x00, | |
282 | DATA_ONLY, 0x00, | |
283 | DATA_ONLY, 0x03, | |
284 | DATA_ONLY, 0x1f, | |
285 | DATA_ONLY, 0x00, | |
286 | DATA_ONLY, 0x00, | |
287 | DATA_ONLY, 0x00, | |
288 | DATA_ONLY, 0x00, | |
289 | DATA_ONLY, 0x00, | |
290 | DATA_ONLY, 0x00, | |
291 | DATA_ONLY, 0x00, | |
292 | DATA_ONLY, 0x00, | |
293 | DATA_ONLY, 0x03, | |
294 | DATA_ONLY, 0x06, | |
295 | DATA_ONLY, 0x09, | |
296 | DATA_ONLY, 0x0d, | |
297 | DATA_ONLY, 0x0f, | |
298 | DATA_ONLY, 0x12, | |
299 | DATA_ONLY, 0x15, | |
300 | DATA_ONLY, 0x18, | |
301 | ||
302 | 0xb2, 0x10, | |
303 | DATA_ONLY, 0x10, | |
304 | DATA_ONLY, 0x0b, | |
305 | DATA_ONLY, 0x05, | |
306 | ||
307 | ENDDEF, 0x0000 | |
308 | }; | |
309 | ||
4a959e59 | 310 | static const unsigned short seq_acl_on[] = { |
ee378a5c ID |
311 | /* ACL on */ |
312 | 0xc0, 0x01, | |
313 | ||
314 | ENDDEF, 0x0000 | |
315 | }; | |
316 | ||
4a959e59 | 317 | static const unsigned short seq_acl_off[] = { |
ee378a5c ID |
318 | /* ACL off */ |
319 | 0xc0, 0x00, | |
320 | ||
321 | ENDDEF, 0x0000 | |
322 | }; | |
323 | ||
4a959e59 | 324 | static const unsigned short seq_elvss_on[] = { |
ee378a5c ID |
325 | /* ELVSS on */ |
326 | 0xb1, 0x0b, | |
327 | ||
328 | ENDDEF, 0x0000 | |
329 | }; | |
330 | ||
4a959e59 | 331 | static const unsigned short seq_elvss_off[] = { |
ee378a5c ID |
332 | /* ELVSS off */ |
333 | 0xb1, 0x0a, | |
334 | ||
335 | ENDDEF, 0x0000 | |
336 | }; | |
337 | ||
4a959e59 | 338 | static const unsigned short seq_stand_by_off[] = { |
ee378a5c ID |
339 | 0x11, COMMAND_ONLY, |
340 | ||
341 | ENDDEF, 0x0000 | |
342 | }; | |
343 | ||
4a959e59 | 344 | static const unsigned short seq_stand_by_on[] = { |
ee378a5c ID |
345 | 0x10, COMMAND_ONLY, |
346 | ||
347 | ENDDEF, 0x0000 | |
348 | }; | |
349 | ||
4a959e59 | 350 | static const unsigned short seq_display_on[] = { |
ee378a5c ID |
351 | 0x29, COMMAND_ONLY, |
352 | ||
353 | ENDDEF, 0x0000 | |
354 | }; | |
355 | ||
356 | ||
357 | static int s6e63m0_spi_write_byte(struct s6e63m0 *lcd, int addr, int data) | |
358 | { | |
359 | u16 buf[1]; | |
360 | struct spi_message msg; | |
361 | ||
362 | struct spi_transfer xfer = { | |
363 | .len = 2, | |
364 | .tx_buf = buf, | |
365 | }; | |
366 | ||
367 | buf[0] = (addr << 8) | data; | |
368 | ||
369 | spi_message_init(&msg); | |
370 | spi_message_add_tail(&xfer, &msg); | |
371 | ||
372 | return spi_sync(lcd->spi, &msg); | |
373 | } | |
374 | ||
375 | static int s6e63m0_spi_write(struct s6e63m0 *lcd, unsigned char address, | |
376 | unsigned char command) | |
377 | { | |
378 | int ret = 0; | |
379 | ||
380 | if (address != DATA_ONLY) | |
381 | ret = s6e63m0_spi_write_byte(lcd, 0x0, address); | |
382 | if (command != COMMAND_ONLY) | |
383 | ret = s6e63m0_spi_write_byte(lcd, 0x1, command); | |
384 | ||
385 | return ret; | |
386 | } | |
387 | ||
388 | static int s6e63m0_panel_send_sequence(struct s6e63m0 *lcd, | |
389 | const unsigned short *wbuf) | |
390 | { | |
391 | int ret = 0, i = 0; | |
392 | ||
393 | while ((wbuf[i] & DEFMASK) != ENDDEF) { | |
394 | if ((wbuf[i] & DEFMASK) != SLEEPMSEC) { | |
395 | ret = s6e63m0_spi_write(lcd, wbuf[i], wbuf[i+1]); | |
396 | if (ret) | |
397 | break; | |
97a4d9d5 JH |
398 | } else { |
399 | msleep(wbuf[i+1]); | |
400 | } | |
ee378a5c ID |
401 | i += 2; |
402 | } | |
403 | ||
404 | return ret; | |
405 | } | |
406 | ||
407 | static int _s6e63m0_gamma_ctl(struct s6e63m0 *lcd, const unsigned int *gamma) | |
408 | { | |
409 | unsigned int i = 0; | |
410 | int ret = 0; | |
411 | ||
412 | /* disable gamma table updating. */ | |
413 | ret = s6e63m0_spi_write(lcd, 0xfa, 0x00); | |
414 | if (ret) { | |
415 | dev_err(lcd->dev, "failed to disable gamma table updating.\n"); | |
416 | goto gamma_err; | |
417 | } | |
418 | ||
419 | for (i = 0 ; i < GAMMA_TABLE_COUNT; i++) { | |
420 | ret = s6e63m0_spi_write(lcd, DATA_ONLY, gamma[i]); | |
421 | if (ret) { | |
422 | dev_err(lcd->dev, "failed to set gamma table.\n"); | |
423 | goto gamma_err; | |
424 | } | |
425 | } | |
426 | ||
427 | /* update gamma table. */ | |
428 | ret = s6e63m0_spi_write(lcd, 0xfa, 0x01); | |
429 | if (ret) | |
430 | dev_err(lcd->dev, "failed to update gamma table.\n"); | |
431 | ||
432 | gamma_err: | |
433 | return ret; | |
434 | } | |
435 | ||
436 | static int s6e63m0_gamma_ctl(struct s6e63m0 *lcd, int gamma) | |
437 | { | |
438 | int ret = 0; | |
439 | ||
440 | ret = _s6e63m0_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]); | |
441 | ||
442 | return ret; | |
443 | } | |
444 | ||
445 | ||
446 | static int s6e63m0_ldi_init(struct s6e63m0 *lcd) | |
447 | { | |
448 | int ret, i; | |
449 | const unsigned short *init_seq[] = { | |
4a959e59 JH |
450 | seq_panel_condition_set, |
451 | seq_display_condition_set, | |
452 | seq_gamma_setting, | |
453 | seq_etc_condition_set, | |
454 | seq_acl_on, | |
455 | seq_elvss_on, | |
ee378a5c ID |
456 | }; |
457 | ||
458 | for (i = 0; i < ARRAY_SIZE(init_seq); i++) { | |
459 | ret = s6e63m0_panel_send_sequence(lcd, init_seq[i]); | |
460 | if (ret) | |
461 | break; | |
462 | } | |
463 | ||
464 | return ret; | |
465 | } | |
466 | ||
467 | static int s6e63m0_ldi_enable(struct s6e63m0 *lcd) | |
468 | { | |
469 | int ret = 0, i; | |
470 | const unsigned short *enable_seq[] = { | |
4a959e59 JH |
471 | seq_stand_by_off, |
472 | seq_display_on, | |
ee378a5c ID |
473 | }; |
474 | ||
475 | for (i = 0; i < ARRAY_SIZE(enable_seq); i++) { | |
476 | ret = s6e63m0_panel_send_sequence(lcd, enable_seq[i]); | |
477 | if (ret) | |
478 | break; | |
479 | } | |
480 | ||
481 | return ret; | |
482 | } | |
483 | ||
484 | static int s6e63m0_ldi_disable(struct s6e63m0 *lcd) | |
485 | { | |
486 | int ret; | |
487 | ||
4a959e59 | 488 | ret = s6e63m0_panel_send_sequence(lcd, seq_stand_by_on); |
ee378a5c ID |
489 | |
490 | return ret; | |
491 | } | |
492 | ||
892dc2e6 JH |
493 | static int s6e63m0_power_is_on(int power) |
494 | { | |
495 | return power <= FB_BLANK_NORMAL; | |
496 | } | |
497 | ||
ee378a5c ID |
498 | static int s6e63m0_power_on(struct s6e63m0 *lcd) |
499 | { | |
500 | int ret = 0; | |
892dc2e6 JH |
501 | struct lcd_platform_data *pd; |
502 | struct backlight_device *bd; | |
ee378a5c ID |
503 | |
504 | pd = lcd->lcd_pd; | |
ee378a5c | 505 | bd = lcd->bd; |
ee378a5c ID |
506 | |
507 | if (!pd->power_on) { | |
508 | dev_err(lcd->dev, "power_on is NULL.\n"); | |
81c650e3 | 509 | return -EINVAL; |
ee378a5c ID |
510 | } else { |
511 | pd->power_on(lcd->ld, 1); | |
97a4d9d5 | 512 | msleep(pd->power_on_delay); |
ee378a5c ID |
513 | } |
514 | ||
515 | if (!pd->reset) { | |
516 | dev_err(lcd->dev, "reset is NULL.\n"); | |
81c650e3 | 517 | return -EINVAL; |
ee378a5c ID |
518 | } else { |
519 | pd->reset(lcd->ld); | |
97a4d9d5 | 520 | msleep(pd->reset_delay); |
ee378a5c ID |
521 | } |
522 | ||
523 | ret = s6e63m0_ldi_init(lcd); | |
524 | if (ret) { | |
525 | dev_err(lcd->dev, "failed to initialize ldi.\n"); | |
526 | return ret; | |
527 | } | |
528 | ||
529 | ret = s6e63m0_ldi_enable(lcd); | |
530 | if (ret) { | |
531 | dev_err(lcd->dev, "failed to enable ldi.\n"); | |
532 | return ret; | |
533 | } | |
534 | ||
535 | /* set brightness to current value after power on or resume. */ | |
536 | ret = s6e63m0_gamma_ctl(lcd, bd->props.brightness); | |
537 | if (ret) { | |
538 | dev_err(lcd->dev, "lcd gamma setting failed.\n"); | |
539 | return ret; | |
540 | } | |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
545 | static int s6e63m0_power_off(struct s6e63m0 *lcd) | |
546 | { | |
892dc2e6 JH |
547 | int ret; |
548 | struct lcd_platform_data *pd; | |
ee378a5c ID |
549 | |
550 | pd = lcd->lcd_pd; | |
ee378a5c ID |
551 | |
552 | ret = s6e63m0_ldi_disable(lcd); | |
553 | if (ret) { | |
554 | dev_err(lcd->dev, "lcd setting failed.\n"); | |
555 | return -EIO; | |
556 | } | |
557 | ||
97a4d9d5 | 558 | msleep(pd->power_off_delay); |
ee378a5c | 559 | |
892dc2e6 | 560 | pd->power_on(lcd->ld, 0); |
ee378a5c ID |
561 | |
562 | return 0; | |
563 | } | |
564 | ||
565 | static int s6e63m0_power(struct s6e63m0 *lcd, int power) | |
566 | { | |
567 | int ret = 0; | |
568 | ||
892dc2e6 | 569 | if (s6e63m0_power_is_on(power) && !s6e63m0_power_is_on(lcd->power)) |
ee378a5c | 570 | ret = s6e63m0_power_on(lcd); |
892dc2e6 | 571 | else if (!s6e63m0_power_is_on(power) && s6e63m0_power_is_on(lcd->power)) |
ee378a5c ID |
572 | ret = s6e63m0_power_off(lcd); |
573 | ||
574 | if (!ret) | |
575 | lcd->power = power; | |
576 | ||
577 | return ret; | |
578 | } | |
579 | ||
580 | static int s6e63m0_set_power(struct lcd_device *ld, int power) | |
581 | { | |
582 | struct s6e63m0 *lcd = lcd_get_data(ld); | |
583 | ||
584 | if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN && | |
585 | power != FB_BLANK_NORMAL) { | |
586 | dev_err(lcd->dev, "power value should be 0, 1 or 4.\n"); | |
587 | return -EINVAL; | |
588 | } | |
589 | ||
590 | return s6e63m0_power(lcd, power); | |
591 | } | |
592 | ||
593 | static int s6e63m0_get_power(struct lcd_device *ld) | |
594 | { | |
595 | struct s6e63m0 *lcd = lcd_get_data(ld); | |
596 | ||
597 | return lcd->power; | |
598 | } | |
599 | ||
600 | static int s6e63m0_get_brightness(struct backlight_device *bd) | |
601 | { | |
602 | return bd->props.brightness; | |
603 | } | |
604 | ||
605 | static int s6e63m0_set_brightness(struct backlight_device *bd) | |
606 | { | |
607 | int ret = 0, brightness = bd->props.brightness; | |
608 | struct s6e63m0 *lcd = bl_get_data(bd); | |
609 | ||
610 | if (brightness < MIN_BRIGHTNESS || | |
611 | brightness > bd->props.max_brightness) { | |
612 | dev_err(&bd->dev, "lcd brightness should be %d to %d.\n", | |
613 | MIN_BRIGHTNESS, MAX_BRIGHTNESS); | |
614 | return -EINVAL; | |
615 | } | |
616 | ||
617 | ret = s6e63m0_gamma_ctl(lcd, bd->props.brightness); | |
618 | if (ret) { | |
619 | dev_err(&bd->dev, "lcd brightness setting failed.\n"); | |
620 | return -EIO; | |
621 | } | |
622 | ||
623 | return ret; | |
624 | } | |
625 | ||
626 | static struct lcd_ops s6e63m0_lcd_ops = { | |
627 | .set_power = s6e63m0_set_power, | |
628 | .get_power = s6e63m0_get_power, | |
629 | }; | |
630 | ||
631 | static const struct backlight_ops s6e63m0_backlight_ops = { | |
632 | .get_brightness = s6e63m0_get_brightness, | |
633 | .update_status = s6e63m0_set_brightness, | |
634 | }; | |
635 | ||
636 | static ssize_t s6e63m0_sysfs_show_gamma_mode(struct device *dev, | |
637 | struct device_attribute *attr, char *buf) | |
638 | { | |
639 | struct s6e63m0 *lcd = dev_get_drvdata(dev); | |
640 | char temp[10]; | |
641 | ||
642 | switch (lcd->gamma_mode) { | |
643 | case 0: | |
644 | sprintf(temp, "2.2 mode\n"); | |
645 | strcat(buf, temp); | |
646 | break; | |
647 | case 1: | |
648 | sprintf(temp, "1.9 mode\n"); | |
649 | strcat(buf, temp); | |
650 | break; | |
651 | case 2: | |
652 | sprintf(temp, "1.7 mode\n"); | |
653 | strcat(buf, temp); | |
654 | break; | |
655 | default: | |
656 | dev_info(dev, "gamma mode could be 0:2.2, 1:1.9 or 2:1.7)n"); | |
657 | break; | |
658 | } | |
659 | ||
660 | return strlen(buf); | |
661 | } | |
662 | ||
663 | static ssize_t s6e63m0_sysfs_store_gamma_mode(struct device *dev, | |
664 | struct device_attribute *attr, | |
665 | const char *buf, size_t len) | |
666 | { | |
667 | struct s6e63m0 *lcd = dev_get_drvdata(dev); | |
668 | struct backlight_device *bd = NULL; | |
669 | int brightness, rc; | |
670 | ||
cf2b94da | 671 | rc = kstrtouint(buf, 0, &lcd->gamma_mode); |
ee378a5c ID |
672 | if (rc < 0) |
673 | return rc; | |
674 | ||
675 | bd = lcd->bd; | |
676 | ||
677 | brightness = bd->props.brightness; | |
678 | ||
679 | switch (lcd->gamma_mode) { | |
680 | case 0: | |
681 | _s6e63m0_gamma_ctl(lcd, gamma_table.gamma_22_table[brightness]); | |
682 | break; | |
683 | case 1: | |
684 | _s6e63m0_gamma_ctl(lcd, gamma_table.gamma_19_table[brightness]); | |
685 | break; | |
686 | case 2: | |
687 | _s6e63m0_gamma_ctl(lcd, gamma_table.gamma_17_table[brightness]); | |
688 | break; | |
689 | default: | |
690 | dev_info(dev, "gamma mode could be 0:2.2, 1:1.9 or 2:1.7\n"); | |
691 | _s6e63m0_gamma_ctl(lcd, gamma_table.gamma_22_table[brightness]); | |
692 | break; | |
693 | } | |
694 | return len; | |
695 | } | |
696 | ||
697 | static DEVICE_ATTR(gamma_mode, 0644, | |
698 | s6e63m0_sysfs_show_gamma_mode, s6e63m0_sysfs_store_gamma_mode); | |
699 | ||
700 | static ssize_t s6e63m0_sysfs_show_gamma_table(struct device *dev, | |
701 | struct device_attribute *attr, char *buf) | |
702 | { | |
703 | struct s6e63m0 *lcd = dev_get_drvdata(dev); | |
704 | char temp[3]; | |
705 | ||
706 | sprintf(temp, "%d\n", lcd->gamma_table_count); | |
707 | strcpy(buf, temp); | |
708 | ||
709 | return strlen(buf); | |
710 | } | |
ed3a6787 | 711 | static DEVICE_ATTR(gamma_table, 0444, |
ee378a5c ID |
712 | s6e63m0_sysfs_show_gamma_table, NULL); |
713 | ||
1b9e450d | 714 | static int s6e63m0_probe(struct spi_device *spi) |
ee378a5c ID |
715 | { |
716 | int ret = 0; | |
717 | struct s6e63m0 *lcd = NULL; | |
718 | struct lcd_device *ld = NULL; | |
719 | struct backlight_device *bd = NULL; | |
ef22f6a7 | 720 | struct backlight_properties props; |
ee378a5c | 721 | |
541f936f | 722 | lcd = devm_kzalloc(&spi->dev, sizeof(struct s6e63m0), GFP_KERNEL); |
ee378a5c ID |
723 | if (!lcd) |
724 | return -ENOMEM; | |
725 | ||
726 | /* s6e63m0 lcd panel uses 3-wire 9bits SPI Mode. */ | |
727 | spi->bits_per_word = 9; | |
728 | ||
729 | ret = spi_setup(spi); | |
730 | if (ret < 0) { | |
731 | dev_err(&spi->dev, "spi setup failed.\n"); | |
541f936f | 732 | return ret; |
ee378a5c ID |
733 | } |
734 | ||
735 | lcd->spi = spi; | |
736 | lcd->dev = &spi->dev; | |
737 | ||
c512794c | 738 | lcd->lcd_pd = dev_get_platdata(&spi->dev); |
ee378a5c ID |
739 | if (!lcd->lcd_pd) { |
740 | dev_err(&spi->dev, "platform data is NULL.\n"); | |
81c650e3 | 741 | return -EINVAL; |
ee378a5c ID |
742 | } |
743 | ||
744 | ld = lcd_device_register("s6e63m0", &spi->dev, lcd, &s6e63m0_lcd_ops); | |
541f936f JH |
745 | if (IS_ERR(ld)) |
746 | return PTR_ERR(ld); | |
ee378a5c ID |
747 | |
748 | lcd->ld = ld; | |
749 | ||
ef22f6a7 AL |
750 | memset(&props, 0, sizeof(struct backlight_properties)); |
751 | props.type = BACKLIGHT_RAW; | |
752 | props.max_brightness = MAX_BRIGHTNESS; | |
753 | ||
ee378a5c | 754 | bd = backlight_device_register("s6e63m0bl-bl", &spi->dev, lcd, |
ef22f6a7 | 755 | &s6e63m0_backlight_ops, &props); |
ee378a5c ID |
756 | if (IS_ERR(bd)) { |
757 | ret = PTR_ERR(bd); | |
758 | goto out_lcd_unregister; | |
759 | } | |
760 | ||
ee378a5c ID |
761 | bd->props.brightness = MAX_BRIGHTNESS; |
762 | lcd->bd = bd; | |
763 | ||
764 | /* | |
765 | * it gets gamma table count available so it gets user | |
766 | * know that. | |
767 | */ | |
768 | lcd->gamma_table_count = | |
eeb1ef3b | 769 | sizeof(gamma_table) / (MAX_GAMMA_LEVEL * sizeof(int *)); |
ee378a5c ID |
770 | |
771 | ret = device_create_file(&(spi->dev), &dev_attr_gamma_mode); | |
772 | if (ret < 0) | |
773 | dev_err(&(spi->dev), "failed to add sysfs entries\n"); | |
774 | ||
775 | ret = device_create_file(&(spi->dev), &dev_attr_gamma_table); | |
776 | if (ret < 0) | |
777 | dev_err(&(spi->dev), "failed to add sysfs entries\n"); | |
778 | ||
779 | /* | |
780 | * if lcd panel was on from bootloader like u-boot then | |
781 | * do not lcd on. | |
782 | */ | |
783 | if (!lcd->lcd_pd->lcd_enabled) { | |
784 | /* | |
785 | * if lcd panel was off from bootloader then | |
786 | * current lcd status is powerdown and then | |
787 | * it enables lcd panel. | |
788 | */ | |
789 | lcd->power = FB_BLANK_POWERDOWN; | |
790 | ||
791 | s6e63m0_power(lcd, FB_BLANK_UNBLANK); | |
892dc2e6 | 792 | } else { |
ee378a5c | 793 | lcd->power = FB_BLANK_UNBLANK; |
892dc2e6 | 794 | } |
ee378a5c | 795 | |
7652c18d | 796 | spi_set_drvdata(spi, lcd); |
ee378a5c ID |
797 | |
798 | dev_info(&spi->dev, "s6e63m0 panel driver has been probed.\n"); | |
799 | ||
800 | return 0; | |
801 | ||
802 | out_lcd_unregister: | |
803 | lcd_device_unregister(ld); | |
ee378a5c ID |
804 | return ret; |
805 | } | |
806 | ||
7e4b9d0b | 807 | static int s6e63m0_remove(struct spi_device *spi) |
ee378a5c | 808 | { |
7652c18d | 809 | struct s6e63m0 *lcd = spi_get_drvdata(spi); |
ee378a5c ID |
810 | |
811 | s6e63m0_power(lcd, FB_BLANK_POWERDOWN); | |
d974e00b AL |
812 | device_remove_file(&spi->dev, &dev_attr_gamma_table); |
813 | device_remove_file(&spi->dev, &dev_attr_gamma_mode); | |
814 | backlight_device_unregister(lcd->bd); | |
ee378a5c | 815 | lcd_device_unregister(lcd->ld); |
ee378a5c ID |
816 | |
817 | return 0; | |
818 | } | |
819 | ||
d50d7ac0 JH |
820 | #ifdef CONFIG_PM_SLEEP |
821 | static int s6e63m0_suspend(struct device *dev) | |
ee378a5c | 822 | { |
d50d7ac0 | 823 | struct s6e63m0 *lcd = dev_get_drvdata(dev); |
ee378a5c | 824 | |
d50d7ac0 | 825 | dev_dbg(dev, "lcd->power = %d\n", lcd->power); |
ee378a5c | 826 | |
ee378a5c ID |
827 | /* |
828 | * when lcd panel is suspend, lcd panel becomes off | |
829 | * regardless of status. | |
830 | */ | |
b6bef463 | 831 | return s6e63m0_power(lcd, FB_BLANK_POWERDOWN); |
ee378a5c ID |
832 | } |
833 | ||
d50d7ac0 | 834 | static int s6e63m0_resume(struct device *dev) |
ee378a5c | 835 | { |
d50d7ac0 | 836 | struct s6e63m0 *lcd = dev_get_drvdata(dev); |
ee378a5c | 837 | |
b6bef463 | 838 | lcd->power = FB_BLANK_POWERDOWN; |
ee378a5c | 839 | |
b6bef463 | 840 | return s6e63m0_power(lcd, FB_BLANK_UNBLANK); |
ee378a5c | 841 | } |
ee378a5c ID |
842 | #endif |
843 | ||
d50d7ac0 JH |
844 | static SIMPLE_DEV_PM_OPS(s6e63m0_pm_ops, s6e63m0_suspend, s6e63m0_resume); |
845 | ||
ee378a5c ID |
846 | /* Power down all displays on reboot, poweroff or halt. */ |
847 | static void s6e63m0_shutdown(struct spi_device *spi) | |
848 | { | |
7652c18d | 849 | struct s6e63m0 *lcd = spi_get_drvdata(spi); |
ee378a5c ID |
850 | |
851 | s6e63m0_power(lcd, FB_BLANK_POWERDOWN); | |
852 | } | |
853 | ||
854 | static struct spi_driver s6e63m0_driver = { | |
855 | .driver = { | |
856 | .name = "s6e63m0", | |
ee378a5c | 857 | .owner = THIS_MODULE, |
d50d7ac0 | 858 | .pm = &s6e63m0_pm_ops, |
ee378a5c ID |
859 | }, |
860 | .probe = s6e63m0_probe, | |
d1723fa2 | 861 | .remove = s6e63m0_remove, |
ee378a5c | 862 | .shutdown = s6e63m0_shutdown, |
ee378a5c ID |
863 | }; |
864 | ||
462dd838 | 865 | module_spi_driver(s6e63m0_driver); |
ee378a5c ID |
866 | |
867 | MODULE_AUTHOR("InKi Dae <inki.dae@samsung.com>"); | |
868 | MODULE_DESCRIPTION("S6E63M0 LCD Driver"); | |
869 | MODULE_LICENSE("GPL"); | |
870 |