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66d2f99d ID |
1 | /* |
2 | * LCD driver for MIPI DBI-C / DCS compatible LCDs | |
3 | * | |
4 | * Copyright (C) 2006 Nokia Corporation | |
5 | * Author: Imre Deak <imre.deak@nokia.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | */ | |
21 | #include <linux/device.h> | |
22 | #include <linux/delay.h> | |
5a0e3ad6 | 23 | #include <linux/slab.h> |
66d2f99d ID |
24 | #include <linux/workqueue.h> |
25 | #include <linux/spi/spi.h> | |
26 | ||
ce491cf8 | 27 | #include <plat/lcd_mipid.h> |
66d2f99d | 28 | |
91773a00 TV |
29 | #include "omapfb.h" |
30 | ||
66d2f99d ID |
31 | #define MIPID_MODULE_NAME "lcd_mipid" |
32 | ||
33 | #define MIPID_CMD_READ_DISP_ID 0x04 | |
34 | #define MIPID_CMD_READ_RED 0x06 | |
35 | #define MIPID_CMD_READ_GREEN 0x07 | |
36 | #define MIPID_CMD_READ_BLUE 0x08 | |
37 | #define MIPID_CMD_READ_DISP_STATUS 0x09 | |
38 | #define MIPID_CMD_RDDSDR 0x0F | |
39 | #define MIPID_CMD_SLEEP_IN 0x10 | |
40 | #define MIPID_CMD_SLEEP_OUT 0x11 | |
41 | #define MIPID_CMD_DISP_OFF 0x28 | |
42 | #define MIPID_CMD_DISP_ON 0x29 | |
43 | ||
44 | #define MIPID_ESD_CHECK_PERIOD msecs_to_jiffies(5000) | |
45 | ||
46 | #define to_mipid_device(p) container_of(p, struct mipid_device, \ | |
47 | panel) | |
48 | struct mipid_device { | |
49 | int enabled; | |
50 | int revision; | |
51 | unsigned int saved_bklight_level; | |
52 | unsigned long hw_guard_end; /* next value of jiffies | |
53 | when we can issue the | |
54 | next sleep in/out command */ | |
55 | unsigned long hw_guard_wait; /* max guard time in jiffies */ | |
56 | ||
57 | struct omapfb_device *fbdev; | |
58 | struct spi_device *spi; | |
59 | struct mutex mutex; | |
60 | struct lcd_panel panel; | |
61 | ||
62 | struct workqueue_struct *esd_wq; | |
63 | struct delayed_work esd_work; | |
64 | void (*esd_check)(struct mipid_device *m); | |
65 | }; | |
66 | ||
67 | static void mipid_transfer(struct mipid_device *md, int cmd, const u8 *wbuf, | |
68 | int wlen, u8 *rbuf, int rlen) | |
69 | { | |
70 | struct spi_message m; | |
71 | struct spi_transfer *x, xfer[4]; | |
72 | u16 w; | |
73 | int r; | |
74 | ||
75 | BUG_ON(md->spi == NULL); | |
76 | ||
77 | spi_message_init(&m); | |
78 | ||
79 | memset(xfer, 0, sizeof(xfer)); | |
80 | x = &xfer[0]; | |
81 | ||
82 | cmd &= 0xff; | |
83 | x->tx_buf = &cmd; | |
84 | x->bits_per_word = 9; | |
85 | x->len = 2; | |
86 | spi_message_add_tail(x, &m); | |
87 | ||
88 | if (wlen) { | |
89 | x++; | |
90 | x->tx_buf = wbuf; | |
91 | x->len = wlen; | |
92 | x->bits_per_word = 9; | |
93 | spi_message_add_tail(x, &m); | |
94 | } | |
95 | ||
96 | if (rlen) { | |
97 | x++; | |
98 | x->rx_buf = &w; | |
99 | x->len = 1; | |
100 | spi_message_add_tail(x, &m); | |
101 | ||
102 | if (rlen > 1) { | |
103 | /* Arrange for the extra clock before the first | |
104 | * data bit. | |
105 | */ | |
106 | x->bits_per_word = 9; | |
107 | x->len = 2; | |
108 | ||
109 | x++; | |
110 | x->rx_buf = &rbuf[1]; | |
111 | x->len = rlen - 1; | |
112 | spi_message_add_tail(x, &m); | |
113 | } | |
114 | } | |
115 | ||
116 | r = spi_sync(md->spi, &m); | |
117 | if (r < 0) | |
118 | dev_dbg(&md->spi->dev, "spi_sync %d\n", r); | |
119 | ||
120 | if (rlen) | |
121 | rbuf[0] = w & 0xff; | |
122 | } | |
123 | ||
124 | static inline void mipid_cmd(struct mipid_device *md, int cmd) | |
125 | { | |
126 | mipid_transfer(md, cmd, NULL, 0, NULL, 0); | |
127 | } | |
128 | ||
129 | static inline void mipid_write(struct mipid_device *md, | |
130 | int reg, const u8 *buf, int len) | |
131 | { | |
132 | mipid_transfer(md, reg, buf, len, NULL, 0); | |
133 | } | |
134 | ||
135 | static inline void mipid_read(struct mipid_device *md, | |
136 | int reg, u8 *buf, int len) | |
137 | { | |
138 | mipid_transfer(md, reg, NULL, 0, buf, len); | |
139 | } | |
140 | ||
141 | static void set_data_lines(struct mipid_device *md, int data_lines) | |
142 | { | |
143 | u16 par; | |
144 | ||
145 | switch (data_lines) { | |
146 | case 16: | |
147 | par = 0x150; | |
148 | break; | |
149 | case 18: | |
150 | par = 0x160; | |
151 | break; | |
152 | case 24: | |
153 | par = 0x170; | |
154 | break; | |
155 | } | |
156 | mipid_write(md, 0x3a, (u8 *)&par, 2); | |
157 | } | |
158 | ||
159 | static void send_init_string(struct mipid_device *md) | |
160 | { | |
161 | u16 initpar[] = { 0x0102, 0x0100, 0x0100 }; | |
162 | ||
163 | mipid_write(md, 0xc2, (u8 *)initpar, sizeof(initpar)); | |
164 | set_data_lines(md, md->panel.data_lines); | |
165 | } | |
166 | ||
167 | static void hw_guard_start(struct mipid_device *md, int guard_msec) | |
168 | { | |
169 | md->hw_guard_wait = msecs_to_jiffies(guard_msec); | |
170 | md->hw_guard_end = jiffies + md->hw_guard_wait; | |
171 | } | |
172 | ||
173 | static void hw_guard_wait(struct mipid_device *md) | |
174 | { | |
175 | unsigned long wait = md->hw_guard_end - jiffies; | |
176 | ||
177 | if ((long)wait > 0 && wait <= md->hw_guard_wait) { | |
178 | set_current_state(TASK_UNINTERRUPTIBLE); | |
179 | schedule_timeout(wait); | |
180 | } | |
181 | } | |
182 | ||
183 | static void set_sleep_mode(struct mipid_device *md, int on) | |
184 | { | |
185 | int cmd, sleep_time = 50; | |
186 | ||
187 | if (on) | |
188 | cmd = MIPID_CMD_SLEEP_IN; | |
189 | else | |
190 | cmd = MIPID_CMD_SLEEP_OUT; | |
191 | hw_guard_wait(md); | |
192 | mipid_cmd(md, cmd); | |
193 | hw_guard_start(md, 120); | |
194 | /* | |
195 | * When we enable the panel, it seems we _have_ to sleep | |
196 | * 120 ms before sending the init string. When disabling the | |
197 | * panel we'll sleep for the duration of 2 frames, so that the | |
198 | * controller can still provide the PCLK,HS,VS signals. | |
199 | */ | |
200 | if (!on) | |
201 | sleep_time = 120; | |
202 | msleep(sleep_time); | |
203 | } | |
204 | ||
205 | static void set_display_state(struct mipid_device *md, int enabled) | |
206 | { | |
207 | int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF; | |
208 | ||
209 | mipid_cmd(md, cmd); | |
210 | } | |
211 | ||
212 | static int mipid_set_bklight_level(struct lcd_panel *panel, unsigned int level) | |
213 | { | |
214 | struct mipid_device *md = to_mipid_device(panel); | |
215 | struct mipid_platform_data *pd = md->spi->dev.platform_data; | |
216 | ||
217 | if (pd->get_bklight_max == NULL || pd->set_bklight_level == NULL) | |
218 | return -ENODEV; | |
219 | if (level > pd->get_bklight_max(pd)) | |
220 | return -EINVAL; | |
221 | if (!md->enabled) { | |
222 | md->saved_bklight_level = level; | |
223 | return 0; | |
224 | } | |
225 | pd->set_bklight_level(pd, level); | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
230 | static unsigned int mipid_get_bklight_level(struct lcd_panel *panel) | |
231 | { | |
232 | struct mipid_device *md = to_mipid_device(panel); | |
233 | struct mipid_platform_data *pd = md->spi->dev.platform_data; | |
234 | ||
235 | if (pd->get_bklight_level == NULL) | |
236 | return -ENODEV; | |
237 | return pd->get_bklight_level(pd); | |
238 | } | |
239 | ||
240 | static unsigned int mipid_get_bklight_max(struct lcd_panel *panel) | |
241 | { | |
242 | struct mipid_device *md = to_mipid_device(panel); | |
243 | struct mipid_platform_data *pd = md->spi->dev.platform_data; | |
244 | ||
245 | if (pd->get_bklight_max == NULL) | |
246 | return -ENODEV; | |
247 | ||
248 | return pd->get_bklight_max(pd); | |
249 | } | |
250 | ||
251 | static unsigned long mipid_get_caps(struct lcd_panel *panel) | |
252 | { | |
253 | return OMAPFB_CAPS_SET_BACKLIGHT; | |
254 | } | |
255 | ||
256 | static u16 read_first_pixel(struct mipid_device *md) | |
257 | { | |
258 | u16 pixel; | |
259 | u8 red, green, blue; | |
260 | ||
261 | mutex_lock(&md->mutex); | |
262 | mipid_read(md, MIPID_CMD_READ_RED, &red, 1); | |
263 | mipid_read(md, MIPID_CMD_READ_GREEN, &green, 1); | |
264 | mipid_read(md, MIPID_CMD_READ_BLUE, &blue, 1); | |
265 | mutex_unlock(&md->mutex); | |
266 | ||
267 | switch (md->panel.data_lines) { | |
268 | case 16: | |
269 | pixel = ((red >> 1) << 11) | (green << 5) | (blue >> 1); | |
270 | break; | |
271 | case 24: | |
272 | /* 24 bit -> 16 bit */ | |
273 | pixel = ((red >> 3) << 11) | ((green >> 2) << 5) | | |
274 | (blue >> 3); | |
275 | break; | |
276 | default: | |
277 | pixel = 0; | |
278 | BUG(); | |
279 | } | |
280 | ||
281 | return pixel; | |
282 | } | |
283 | ||
284 | static int mipid_run_test(struct lcd_panel *panel, int test_num) | |
285 | { | |
286 | struct mipid_device *md = to_mipid_device(panel); | |
287 | static const u16 test_values[4] = { | |
288 | 0x0000, 0xffff, 0xaaaa, 0x5555, | |
289 | }; | |
290 | int i; | |
291 | ||
292 | if (test_num != MIPID_TEST_RGB_LINES) | |
293 | return MIPID_TEST_INVALID; | |
294 | ||
295 | for (i = 0; i < ARRAY_SIZE(test_values); i++) { | |
296 | int delay; | |
297 | unsigned long tmo; | |
298 | ||
299 | omapfb_write_first_pixel(md->fbdev, test_values[i]); | |
300 | tmo = jiffies + msecs_to_jiffies(100); | |
301 | delay = 25; | |
302 | while (1) { | |
303 | u16 pixel; | |
304 | ||
305 | msleep(delay); | |
306 | pixel = read_first_pixel(md); | |
307 | if (pixel == test_values[i]) | |
308 | break; | |
309 | if (time_after(jiffies, tmo)) { | |
310 | dev_err(&md->spi->dev, | |
311 | "MIPI LCD RGB I/F test failed: " | |
312 | "expecting %04x, got %04x\n", | |
313 | test_values[i], pixel); | |
314 | return MIPID_TEST_FAILED; | |
315 | } | |
316 | delay = 10; | |
317 | } | |
318 | } | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
323 | static void ls041y3_esd_recover(struct mipid_device *md) | |
324 | { | |
325 | dev_err(&md->spi->dev, "performing LCD ESD recovery\n"); | |
326 | set_sleep_mode(md, 1); | |
327 | set_sleep_mode(md, 0); | |
328 | } | |
329 | ||
330 | static void ls041y3_esd_check_mode1(struct mipid_device *md) | |
331 | { | |
332 | u8 state1, state2; | |
333 | ||
334 | mipid_read(md, MIPID_CMD_RDDSDR, &state1, 1); | |
335 | set_sleep_mode(md, 0); | |
336 | mipid_read(md, MIPID_CMD_RDDSDR, &state2, 1); | |
337 | dev_dbg(&md->spi->dev, "ESD mode 1 state1 %02x state2 %02x\n", | |
338 | state1, state2); | |
339 | /* Each sleep out command will trigger a self diagnostic and flip | |
340 | * Bit6 if the test passes. | |
341 | */ | |
342 | if (!((state1 ^ state2) & (1 << 6))) | |
343 | ls041y3_esd_recover(md); | |
344 | } | |
345 | ||
346 | static void ls041y3_esd_check_mode2(struct mipid_device *md) | |
347 | { | |
348 | int i; | |
349 | u8 rbuf[2]; | |
350 | static const struct { | |
351 | int cmd; | |
352 | int wlen; | |
353 | u16 wbuf[3]; | |
354 | } *rd, rd_ctrl[7] = { | |
355 | { 0xb0, 4, { 0x0101, 0x01fe, } }, | |
356 | { 0xb1, 4, { 0x01de, 0x0121, } }, | |
357 | { 0xc2, 4, { 0x0100, 0x0100, } }, | |
358 | { 0xbd, 2, { 0x0100, } }, | |
359 | { 0xc2, 4, { 0x01fc, 0x0103, } }, | |
360 | { 0xb4, 0, }, | |
361 | { 0x00, 0, }, | |
362 | }; | |
363 | ||
364 | rd = rd_ctrl; | |
365 | for (i = 0; i < 3; i++, rd++) | |
366 | mipid_write(md, rd->cmd, (u8 *)rd->wbuf, rd->wlen); | |
367 | ||
368 | udelay(10); | |
369 | mipid_read(md, rd->cmd, rbuf, 2); | |
370 | rd++; | |
371 | ||
372 | for (i = 0; i < 3; i++, rd++) { | |
373 | udelay(10); | |
374 | mipid_write(md, rd->cmd, (u8 *)rd->wbuf, rd->wlen); | |
375 | } | |
376 | ||
377 | dev_dbg(&md->spi->dev, "ESD mode 2 state %02x\n", rbuf[1]); | |
378 | if (rbuf[1] == 0x00) | |
379 | ls041y3_esd_recover(md); | |
380 | } | |
381 | ||
382 | static void ls041y3_esd_check(struct mipid_device *md) | |
383 | { | |
384 | ls041y3_esd_check_mode1(md); | |
385 | if (md->revision >= 0x88) | |
386 | ls041y3_esd_check_mode2(md); | |
387 | } | |
388 | ||
389 | static void mipid_esd_start_check(struct mipid_device *md) | |
390 | { | |
391 | if (md->esd_check != NULL) | |
392 | queue_delayed_work(md->esd_wq, &md->esd_work, | |
393 | MIPID_ESD_CHECK_PERIOD); | |
394 | } | |
395 | ||
396 | static void mipid_esd_stop_check(struct mipid_device *md) | |
397 | { | |
398 | if (md->esd_check != NULL) | |
afe2c511 | 399 | cancel_delayed_work_sync(&md->esd_work); |
66d2f99d ID |
400 | } |
401 | ||
402 | static void mipid_esd_work(struct work_struct *work) | |
403 | { | |
404 | struct mipid_device *md = container_of(work, struct mipid_device, | |
405 | esd_work.work); | |
406 | ||
407 | mutex_lock(&md->mutex); | |
408 | md->esd_check(md); | |
409 | mutex_unlock(&md->mutex); | |
410 | mipid_esd_start_check(md); | |
411 | } | |
412 | ||
413 | static int mipid_enable(struct lcd_panel *panel) | |
414 | { | |
415 | struct mipid_device *md = to_mipid_device(panel); | |
416 | ||
417 | mutex_lock(&md->mutex); | |
418 | ||
419 | if (md->enabled) { | |
420 | mutex_unlock(&md->mutex); | |
421 | return 0; | |
422 | } | |
423 | set_sleep_mode(md, 0); | |
424 | md->enabled = 1; | |
425 | send_init_string(md); | |
426 | set_display_state(md, 1); | |
427 | mipid_set_bklight_level(panel, md->saved_bklight_level); | |
428 | mipid_esd_start_check(md); | |
429 | ||
430 | mutex_unlock(&md->mutex); | |
431 | return 0; | |
432 | } | |
433 | ||
434 | static void mipid_disable(struct lcd_panel *panel) | |
435 | { | |
436 | struct mipid_device *md = to_mipid_device(panel); | |
437 | ||
438 | /* | |
439 | * A final ESD work might be called before returning, | |
440 | * so do this without holding the lock. | |
441 | */ | |
442 | mipid_esd_stop_check(md); | |
443 | mutex_lock(&md->mutex); | |
444 | ||
445 | if (!md->enabled) { | |
446 | mutex_unlock(&md->mutex); | |
447 | return; | |
448 | } | |
449 | md->saved_bklight_level = mipid_get_bklight_level(panel); | |
450 | mipid_set_bklight_level(panel, 0); | |
451 | set_display_state(md, 0); | |
452 | set_sleep_mode(md, 1); | |
453 | md->enabled = 0; | |
454 | ||
455 | mutex_unlock(&md->mutex); | |
456 | } | |
457 | ||
458 | static int panel_enabled(struct mipid_device *md) | |
459 | { | |
460 | u32 disp_status; | |
461 | int enabled; | |
462 | ||
463 | mipid_read(md, MIPID_CMD_READ_DISP_STATUS, (u8 *)&disp_status, 4); | |
464 | disp_status = __be32_to_cpu(disp_status); | |
465 | enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10)); | |
466 | dev_dbg(&md->spi->dev, | |
467 | "LCD panel %senabled by bootloader (status 0x%04x)\n", | |
468 | enabled ? "" : "not ", disp_status); | |
469 | return enabled; | |
470 | } | |
471 | ||
472 | static int mipid_init(struct lcd_panel *panel, | |
473 | struct omapfb_device *fbdev) | |
474 | { | |
475 | struct mipid_device *md = to_mipid_device(panel); | |
476 | ||
477 | md->fbdev = fbdev; | |
478 | md->esd_wq = create_singlethread_workqueue("mipid_esd"); | |
479 | if (md->esd_wq == NULL) { | |
480 | dev_err(&md->spi->dev, "can't create ESD workqueue\n"); | |
481 | return -ENOMEM; | |
482 | } | |
483 | INIT_DELAYED_WORK(&md->esd_work, mipid_esd_work); | |
484 | mutex_init(&md->mutex); | |
485 | ||
486 | md->enabled = panel_enabled(md); | |
487 | ||
488 | if (md->enabled) | |
489 | mipid_esd_start_check(md); | |
490 | else | |
491 | md->saved_bklight_level = mipid_get_bklight_level(panel); | |
492 | ||
493 | return 0; | |
494 | } | |
495 | ||
496 | static void mipid_cleanup(struct lcd_panel *panel) | |
497 | { | |
498 | struct mipid_device *md = to_mipid_device(panel); | |
499 | ||
500 | if (md->enabled) | |
501 | mipid_esd_stop_check(md); | |
502 | destroy_workqueue(md->esd_wq); | |
503 | } | |
504 | ||
505 | static struct lcd_panel mipid_panel = { | |
506 | .config = OMAP_LCDC_PANEL_TFT, | |
507 | ||
508 | .bpp = 16, | |
509 | .x_res = 800, | |
510 | .y_res = 480, | |
511 | .pixel_clock = 21940, | |
512 | .hsw = 50, | |
513 | .hfp = 20, | |
514 | .hbp = 15, | |
515 | .vsw = 2, | |
516 | .vfp = 1, | |
517 | .vbp = 3, | |
518 | ||
519 | .init = mipid_init, | |
520 | .cleanup = mipid_cleanup, | |
521 | .enable = mipid_enable, | |
522 | .disable = mipid_disable, | |
523 | .get_caps = mipid_get_caps, | |
524 | .set_bklight_level = mipid_set_bklight_level, | |
525 | .get_bklight_level = mipid_get_bklight_level, | |
526 | .get_bklight_max = mipid_get_bklight_max, | |
527 | .run_test = mipid_run_test, | |
528 | }; | |
529 | ||
530 | static int mipid_detect(struct mipid_device *md) | |
531 | { | |
532 | struct mipid_platform_data *pdata; | |
533 | u8 display_id[3]; | |
534 | ||
535 | pdata = md->spi->dev.platform_data; | |
536 | if (pdata == NULL) { | |
537 | dev_err(&md->spi->dev, "missing platform data\n"); | |
538 | return -ENOENT; | |
539 | } | |
540 | ||
541 | mipid_read(md, MIPID_CMD_READ_DISP_ID, display_id, 3); | |
542 | dev_dbg(&md->spi->dev, "MIPI display ID: %02x%02x%02x\n", | |
543 | display_id[0], display_id[1], display_id[2]); | |
544 | ||
545 | switch (display_id[0]) { | |
546 | case 0x45: | |
547 | md->panel.name = "lph8923"; | |
548 | break; | |
549 | case 0x83: | |
550 | md->panel.name = "ls041y3"; | |
551 | md->esd_check = ls041y3_esd_check; | |
552 | break; | |
553 | default: | |
554 | md->panel.name = "unknown"; | |
555 | dev_err(&md->spi->dev, "invalid display ID\n"); | |
556 | return -ENODEV; | |
557 | } | |
558 | ||
559 | md->revision = display_id[1]; | |
560 | md->panel.data_lines = pdata->data_lines; | |
561 | pr_info("omapfb: %s rev %02x LCD detected, %d data lines\n", | |
562 | md->panel.name, md->revision, md->panel.data_lines); | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
567 | static int mipid_spi_probe(struct spi_device *spi) | |
568 | { | |
569 | struct mipid_device *md; | |
570 | int r; | |
571 | ||
572 | md = kzalloc(sizeof(*md), GFP_KERNEL); | |
573 | if (md == NULL) { | |
574 | dev_err(&spi->dev, "out of memory\n"); | |
575 | return -ENOMEM; | |
576 | } | |
577 | ||
578 | spi->mode = SPI_MODE_0; | |
579 | md->spi = spi; | |
580 | dev_set_drvdata(&spi->dev, md); | |
581 | md->panel = mipid_panel; | |
582 | ||
583 | r = mipid_detect(md); | |
584 | if (r < 0) | |
585 | return r; | |
586 | ||
587 | omapfb_register_panel(&md->panel); | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | static int mipid_spi_remove(struct spi_device *spi) | |
593 | { | |
594 | struct mipid_device *md = dev_get_drvdata(&spi->dev); | |
595 | ||
596 | mipid_disable(&md->panel); | |
597 | kfree(md); | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
602 | static struct spi_driver mipid_spi_driver = { | |
603 | .driver = { | |
604 | .name = MIPID_MODULE_NAME, | |
605 | .bus = &spi_bus_type, | |
606 | .owner = THIS_MODULE, | |
607 | }, | |
608 | .probe = mipid_spi_probe, | |
609 | .remove = __devexit_p(mipid_spi_remove), | |
610 | }; | |
611 | ||
b89ea90d | 612 | static int __init mipid_drv_init(void) |
66d2f99d ID |
613 | { |
614 | spi_register_driver(&mipid_spi_driver); | |
615 | ||
616 | return 0; | |
617 | } | |
618 | module_init(mipid_drv_init); | |
619 | ||
b89ea90d | 620 | static void __exit mipid_drv_cleanup(void) |
66d2f99d ID |
621 | { |
622 | spi_unregister_driver(&mipid_spi_driver); | |
623 | } | |
624 | module_exit(mipid_drv_cleanup); | |
625 | ||
626 | MODULE_DESCRIPTION("MIPI display driver"); | |
627 | MODULE_LICENSE("GPL"); |