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[deliverable/linux.git] / drivers / media / i2c / soc_camera / mt9t112.c
1 /*
2 * mt9t112 Camera Driver
3 *
4 * Copyright (C) 2009 Renesas Solutions Corp.
5 * Kuninori Morimoto <morimoto.kuninori@renesas.com>
6 *
7 * Based on ov772x driver, mt9m111 driver,
8 *
9 * Copyright (C) 2008 Kuninori Morimoto <morimoto.kuninori@renesas.com>
10 * Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr>
11 * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
12 * Copyright (C) 2008 Magnus Damm
13 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
14 *
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License version 2 as
17 * published by the Free Software Foundation.
18 */
19
20 #include <linux/delay.h>
21 #include <linux/i2c.h>
22 #include <linux/init.h>
23 #include <linux/module.h>
24 #include <linux/slab.h>
25 #include <linux/v4l2-mediabus.h>
26 #include <linux/videodev2.h>
27
28 #include <media/i2c/mt9t112.h>
29 #include <media/soc_camera.h>
30 #include <media/v4l2-clk.h>
31 #include <media/v4l2-common.h>
32 #include <media/v4l2-image-sizes.h>
33
34 /* you can check PLL/clock info */
35 /* #define EXT_CLOCK 24000000 */
36
37 /************************************************************************
38 macro
39 ************************************************************************/
40 /*
41 * frame size
42 */
43 #define MAX_WIDTH 2048
44 #define MAX_HEIGHT 1536
45
46 /*
47 * macro of read/write
48 */
49 #define ECHECKER(ret, x) \
50 do { \
51 (ret) = (x); \
52 if ((ret) < 0) \
53 return (ret); \
54 } while (0)
55
56 #define mt9t112_reg_write(ret, client, a, b) \
57 ECHECKER(ret, __mt9t112_reg_write(client, a, b))
58 #define mt9t112_mcu_write(ret, client, a, b) \
59 ECHECKER(ret, __mt9t112_mcu_write(client, a, b))
60
61 #define mt9t112_reg_mask_set(ret, client, a, b, c) \
62 ECHECKER(ret, __mt9t112_reg_mask_set(client, a, b, c))
63 #define mt9t112_mcu_mask_set(ret, client, a, b, c) \
64 ECHECKER(ret, __mt9t112_mcu_mask_set(client, a, b, c))
65
66 #define mt9t112_reg_read(ret, client, a) \
67 ECHECKER(ret, __mt9t112_reg_read(client, a))
68
69 /*
70 * Logical address
71 */
72 #define _VAR(id, offset, base) (base | (id & 0x1f) << 10 | (offset & 0x3ff))
73 #define VAR(id, offset) _VAR(id, offset, 0x0000)
74 #define VAR8(id, offset) _VAR(id, offset, 0x8000)
75
76 /************************************************************************
77 struct
78 ************************************************************************/
79 struct mt9t112_format {
80 u32 code;
81 enum v4l2_colorspace colorspace;
82 u16 fmt;
83 u16 order;
84 };
85
86 struct mt9t112_priv {
87 struct v4l2_subdev subdev;
88 struct mt9t112_camera_info *info;
89 struct i2c_client *client;
90 struct v4l2_rect frame;
91 struct v4l2_clk *clk;
92 const struct mt9t112_format *format;
93 int num_formats;
94 u32 flags;
95 /* for flags */
96 #define INIT_DONE (1 << 0)
97 #define PCLK_RISING (1 << 1)
98 };
99
100 /************************************************************************
101 supported format
102 ************************************************************************/
103
104 static const struct mt9t112_format mt9t112_cfmts[] = {
105 {
106 .code = MEDIA_BUS_FMT_UYVY8_2X8,
107 .colorspace = V4L2_COLORSPACE_SRGB,
108 .fmt = 1,
109 .order = 0,
110 }, {
111 .code = MEDIA_BUS_FMT_VYUY8_2X8,
112 .colorspace = V4L2_COLORSPACE_SRGB,
113 .fmt = 1,
114 .order = 1,
115 }, {
116 .code = MEDIA_BUS_FMT_YUYV8_2X8,
117 .colorspace = V4L2_COLORSPACE_SRGB,
118 .fmt = 1,
119 .order = 2,
120 }, {
121 .code = MEDIA_BUS_FMT_YVYU8_2X8,
122 .colorspace = V4L2_COLORSPACE_SRGB,
123 .fmt = 1,
124 .order = 3,
125 }, {
126 .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
127 .colorspace = V4L2_COLORSPACE_SRGB,
128 .fmt = 8,
129 .order = 2,
130 }, {
131 .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
132 .colorspace = V4L2_COLORSPACE_SRGB,
133 .fmt = 4,
134 .order = 2,
135 },
136 };
137
138 /************************************************************************
139 general function
140 ************************************************************************/
141 static struct mt9t112_priv *to_mt9t112(const struct i2c_client *client)
142 {
143 return container_of(i2c_get_clientdata(client),
144 struct mt9t112_priv,
145 subdev);
146 }
147
148 static int __mt9t112_reg_read(const struct i2c_client *client, u16 command)
149 {
150 struct i2c_msg msg[2];
151 u8 buf[2];
152 int ret;
153
154 command = swab16(command);
155
156 msg[0].addr = client->addr;
157 msg[0].flags = 0;
158 msg[0].len = 2;
159 msg[0].buf = (u8 *)&command;
160
161 msg[1].addr = client->addr;
162 msg[1].flags = I2C_M_RD;
163 msg[1].len = 2;
164 msg[1].buf = buf;
165
166 /*
167 * if return value of this function is < 0,
168 * it mean error.
169 * else, under 16bit is valid data.
170 */
171 ret = i2c_transfer(client->adapter, msg, 2);
172 if (ret < 0)
173 return ret;
174
175 memcpy(&ret, buf, 2);
176 return swab16(ret);
177 }
178
179 static int __mt9t112_reg_write(const struct i2c_client *client,
180 u16 command, u16 data)
181 {
182 struct i2c_msg msg;
183 u8 buf[4];
184 int ret;
185
186 command = swab16(command);
187 data = swab16(data);
188
189 memcpy(buf + 0, &command, 2);
190 memcpy(buf + 2, &data, 2);
191
192 msg.addr = client->addr;
193 msg.flags = 0;
194 msg.len = 4;
195 msg.buf = buf;
196
197 /*
198 * i2c_transfer return message length,
199 * but this function should return 0 if correct case
200 */
201 ret = i2c_transfer(client->adapter, &msg, 1);
202 if (ret >= 0)
203 ret = 0;
204
205 return ret;
206 }
207
208 static int __mt9t112_reg_mask_set(const struct i2c_client *client,
209 u16 command,
210 u16 mask,
211 u16 set)
212 {
213 int val = __mt9t112_reg_read(client, command);
214 if (val < 0)
215 return val;
216
217 val &= ~mask;
218 val |= set & mask;
219
220 return __mt9t112_reg_write(client, command, val);
221 }
222
223 /* mcu access */
224 static int __mt9t112_mcu_read(const struct i2c_client *client, u16 command)
225 {
226 int ret;
227
228 ret = __mt9t112_reg_write(client, 0x098E, command);
229 if (ret < 0)
230 return ret;
231
232 return __mt9t112_reg_read(client, 0x0990);
233 }
234
235 static int __mt9t112_mcu_write(const struct i2c_client *client,
236 u16 command, u16 data)
237 {
238 int ret;
239
240 ret = __mt9t112_reg_write(client, 0x098E, command);
241 if (ret < 0)
242 return ret;
243
244 return __mt9t112_reg_write(client, 0x0990, data);
245 }
246
247 static int __mt9t112_mcu_mask_set(const struct i2c_client *client,
248 u16 command,
249 u16 mask,
250 u16 set)
251 {
252 int val = __mt9t112_mcu_read(client, command);
253 if (val < 0)
254 return val;
255
256 val &= ~mask;
257 val |= set & mask;
258
259 return __mt9t112_mcu_write(client, command, val);
260 }
261
262 static int mt9t112_reset(const struct i2c_client *client)
263 {
264 int ret;
265
266 mt9t112_reg_mask_set(ret, client, 0x001a, 0x0001, 0x0001);
267 msleep(1);
268 mt9t112_reg_mask_set(ret, client, 0x001a, 0x0001, 0x0000);
269
270 return ret;
271 }
272
273 #ifndef EXT_CLOCK
274 #define CLOCK_INFO(a, b)
275 #else
276 #define CLOCK_INFO(a, b) mt9t112_clock_info(a, b)
277 static int mt9t112_clock_info(const struct i2c_client *client, u32 ext)
278 {
279 int m, n, p1, p2, p3, p4, p5, p6, p7;
280 u32 vco, clk;
281 char *enable;
282
283 ext /= 1000; /* kbyte order */
284
285 mt9t112_reg_read(n, client, 0x0012);
286 p1 = n & 0x000f;
287 n = n >> 4;
288 p2 = n & 0x000f;
289 n = n >> 4;
290 p3 = n & 0x000f;
291
292 mt9t112_reg_read(n, client, 0x002a);
293 p4 = n & 0x000f;
294 n = n >> 4;
295 p5 = n & 0x000f;
296 n = n >> 4;
297 p6 = n & 0x000f;
298
299 mt9t112_reg_read(n, client, 0x002c);
300 p7 = n & 0x000f;
301
302 mt9t112_reg_read(n, client, 0x0010);
303 m = n & 0x00ff;
304 n = (n >> 8) & 0x003f;
305
306 enable = ((6000 > ext) || (54000 < ext)) ? "X" : "";
307 dev_dbg(&client->dev, "EXTCLK : %10u K %s\n", ext, enable);
308
309 vco = 2 * m * ext / (n+1);
310 enable = ((384000 > vco) || (768000 < vco)) ? "X" : "";
311 dev_dbg(&client->dev, "VCO : %10u K %s\n", vco, enable);
312
313 clk = vco / (p1+1) / (p2+1);
314 enable = (96000 < clk) ? "X" : "";
315 dev_dbg(&client->dev, "PIXCLK : %10u K %s\n", clk, enable);
316
317 clk = vco / (p3+1);
318 enable = (768000 < clk) ? "X" : "";
319 dev_dbg(&client->dev, "MIPICLK : %10u K %s\n", clk, enable);
320
321 clk = vco / (p6+1);
322 enable = (96000 < clk) ? "X" : "";
323 dev_dbg(&client->dev, "MCU CLK : %10u K %s\n", clk, enable);
324
325 clk = vco / (p5+1);
326 enable = (54000 < clk) ? "X" : "";
327 dev_dbg(&client->dev, "SOC CLK : %10u K %s\n", clk, enable);
328
329 clk = vco / (p4+1);
330 enable = (70000 < clk) ? "X" : "";
331 dev_dbg(&client->dev, "Sensor CLK : %10u K %s\n", clk, enable);
332
333 clk = vco / (p7+1);
334 dev_dbg(&client->dev, "External sensor : %10u K\n", clk);
335
336 clk = ext / (n+1);
337 enable = ((2000 > clk) || (24000 < clk)) ? "X" : "";
338 dev_dbg(&client->dev, "PFD : %10u K %s\n", clk, enable);
339
340 return 0;
341 }
342 #endif
343
344 static void mt9t112_frame_check(u32 *width, u32 *height, u32 *left, u32 *top)
345 {
346 soc_camera_limit_side(left, width, 0, 0, MAX_WIDTH);
347 soc_camera_limit_side(top, height, 0, 0, MAX_HEIGHT);
348 }
349
350 static int mt9t112_set_a_frame_size(const struct i2c_client *client,
351 u16 width,
352 u16 height)
353 {
354 int ret;
355 u16 wstart = (MAX_WIDTH - width) / 2;
356 u16 hstart = (MAX_HEIGHT - height) / 2;
357
358 /* (Context A) Image Width/Height */
359 mt9t112_mcu_write(ret, client, VAR(26, 0), width);
360 mt9t112_mcu_write(ret, client, VAR(26, 2), height);
361
362 /* (Context A) Output Width/Height */
363 mt9t112_mcu_write(ret, client, VAR(18, 43), 8 + width);
364 mt9t112_mcu_write(ret, client, VAR(18, 45), 8 + height);
365
366 /* (Context A) Start Row/Column */
367 mt9t112_mcu_write(ret, client, VAR(18, 2), 4 + hstart);
368 mt9t112_mcu_write(ret, client, VAR(18, 4), 4 + wstart);
369
370 /* (Context A) End Row/Column */
371 mt9t112_mcu_write(ret, client, VAR(18, 6), 11 + height + hstart);
372 mt9t112_mcu_write(ret, client, VAR(18, 8), 11 + width + wstart);
373
374 mt9t112_mcu_write(ret, client, VAR8(1, 0), 0x06);
375
376 return ret;
377 }
378
379 static int mt9t112_set_pll_dividers(const struct i2c_client *client,
380 u8 m, u8 n,
381 u8 p1, u8 p2, u8 p3,
382 u8 p4, u8 p5, u8 p6,
383 u8 p7)
384 {
385 int ret;
386 u16 val;
387
388 /* N/M */
389 val = (n << 8) |
390 (m << 0);
391 mt9t112_reg_mask_set(ret, client, 0x0010, 0x3fff, val);
392
393 /* P1/P2/P3 */
394 val = ((p3 & 0x0F) << 8) |
395 ((p2 & 0x0F) << 4) |
396 ((p1 & 0x0F) << 0);
397 mt9t112_reg_mask_set(ret, client, 0x0012, 0x0fff, val);
398
399 /* P4/P5/P6 */
400 val = (0x7 << 12) |
401 ((p6 & 0x0F) << 8) |
402 ((p5 & 0x0F) << 4) |
403 ((p4 & 0x0F) << 0);
404 mt9t112_reg_mask_set(ret, client, 0x002A, 0x7fff, val);
405
406 /* P7 */
407 val = (0x1 << 12) |
408 ((p7 & 0x0F) << 0);
409 mt9t112_reg_mask_set(ret, client, 0x002C, 0x100f, val);
410
411 return ret;
412 }
413
414 static int mt9t112_init_pll(const struct i2c_client *client)
415 {
416 struct mt9t112_priv *priv = to_mt9t112(client);
417 int data, i, ret;
418
419 mt9t112_reg_mask_set(ret, client, 0x0014, 0x003, 0x0001);
420
421 /* PLL control: BYPASS PLL = 8517 */
422 mt9t112_reg_write(ret, client, 0x0014, 0x2145);
423
424 /* Replace these registers when new timing parameters are generated */
425 mt9t112_set_pll_dividers(client,
426 priv->info->divider.m,
427 priv->info->divider.n,
428 priv->info->divider.p1,
429 priv->info->divider.p2,
430 priv->info->divider.p3,
431 priv->info->divider.p4,
432 priv->info->divider.p5,
433 priv->info->divider.p6,
434 priv->info->divider.p7);
435
436 /*
437 * TEST_BYPASS on
438 * PLL_ENABLE on
439 * SEL_LOCK_DET on
440 * TEST_BYPASS off
441 */
442 mt9t112_reg_write(ret, client, 0x0014, 0x2525);
443 mt9t112_reg_write(ret, client, 0x0014, 0x2527);
444 mt9t112_reg_write(ret, client, 0x0014, 0x3427);
445 mt9t112_reg_write(ret, client, 0x0014, 0x3027);
446
447 mdelay(10);
448
449 /*
450 * PLL_BYPASS off
451 * Reference clock count
452 * I2C Master Clock Divider
453 */
454 mt9t112_reg_write(ret, client, 0x0014, 0x3046);
455 mt9t112_reg_write(ret, client, 0x0016, 0x0400); /* JPEG initialization workaround */
456 mt9t112_reg_write(ret, client, 0x0022, 0x0190);
457 mt9t112_reg_write(ret, client, 0x3B84, 0x0212);
458
459 /* External sensor clock is PLL bypass */
460 mt9t112_reg_write(ret, client, 0x002E, 0x0500);
461
462 mt9t112_reg_mask_set(ret, client, 0x0018, 0x0002, 0x0002);
463 mt9t112_reg_mask_set(ret, client, 0x3B82, 0x0004, 0x0004);
464
465 /* MCU disabled */
466 mt9t112_reg_mask_set(ret, client, 0x0018, 0x0004, 0x0004);
467
468 /* out of standby */
469 mt9t112_reg_mask_set(ret, client, 0x0018, 0x0001, 0);
470
471 mdelay(50);
472
473 /*
474 * Standby Workaround
475 * Disable Secondary I2C Pads
476 */
477 mt9t112_reg_write(ret, client, 0x0614, 0x0001);
478 mdelay(1);
479 mt9t112_reg_write(ret, client, 0x0614, 0x0001);
480 mdelay(1);
481 mt9t112_reg_write(ret, client, 0x0614, 0x0001);
482 mdelay(1);
483 mt9t112_reg_write(ret, client, 0x0614, 0x0001);
484 mdelay(1);
485 mt9t112_reg_write(ret, client, 0x0614, 0x0001);
486 mdelay(1);
487 mt9t112_reg_write(ret, client, 0x0614, 0x0001);
488 mdelay(1);
489
490 /* poll to verify out of standby. Must Poll this bit */
491 for (i = 0; i < 100; i++) {
492 mt9t112_reg_read(data, client, 0x0018);
493 if (!(0x4000 & data))
494 break;
495
496 mdelay(10);
497 }
498
499 return ret;
500 }
501
502 static int mt9t112_init_setting(const struct i2c_client *client)
503 {
504
505 int ret;
506
507 /* Adaptive Output Clock (A) */
508 mt9t112_mcu_mask_set(ret, client, VAR(26, 160), 0x0040, 0x0000);
509
510 /* Read Mode (A) */
511 mt9t112_mcu_write(ret, client, VAR(18, 12), 0x0024);
512
513 /* Fine Correction (A) */
514 mt9t112_mcu_write(ret, client, VAR(18, 15), 0x00CC);
515
516 /* Fine IT Min (A) */
517 mt9t112_mcu_write(ret, client, VAR(18, 17), 0x01f1);
518
519 /* Fine IT Max Margin (A) */
520 mt9t112_mcu_write(ret, client, VAR(18, 19), 0x00fF);
521
522 /* Base Frame Lines (A) */
523 mt9t112_mcu_write(ret, client, VAR(18, 29), 0x032D);
524
525 /* Min Line Length (A) */
526 mt9t112_mcu_write(ret, client, VAR(18, 31), 0x073a);
527
528 /* Line Length (A) */
529 mt9t112_mcu_write(ret, client, VAR(18, 37), 0x07d0);
530
531 /* Adaptive Output Clock (B) */
532 mt9t112_mcu_mask_set(ret, client, VAR(27, 160), 0x0040, 0x0000);
533
534 /* Row Start (B) */
535 mt9t112_mcu_write(ret, client, VAR(18, 74), 0x004);
536
537 /* Column Start (B) */
538 mt9t112_mcu_write(ret, client, VAR(18, 76), 0x004);
539
540 /* Row End (B) */
541 mt9t112_mcu_write(ret, client, VAR(18, 78), 0x60B);
542
543 /* Column End (B) */
544 mt9t112_mcu_write(ret, client, VAR(18, 80), 0x80B);
545
546 /* Fine Correction (B) */
547 mt9t112_mcu_write(ret, client, VAR(18, 87), 0x008C);
548
549 /* Fine IT Min (B) */
550 mt9t112_mcu_write(ret, client, VAR(18, 89), 0x01F1);
551
552 /* Fine IT Max Margin (B) */
553 mt9t112_mcu_write(ret, client, VAR(18, 91), 0x00FF);
554
555 /* Base Frame Lines (B) */
556 mt9t112_mcu_write(ret, client, VAR(18, 101), 0x0668);
557
558 /* Min Line Length (B) */
559 mt9t112_mcu_write(ret, client, VAR(18, 103), 0x0AF0);
560
561 /* Line Length (B) */
562 mt9t112_mcu_write(ret, client, VAR(18, 109), 0x0AF0);
563
564 /*
565 * Flicker Dectection registers
566 * This section should be replaced whenever new Timing file is generated
567 * All the following registers need to be replaced
568 * Following registers are generated from Register Wizard but user can
569 * modify them. For detail see auto flicker detection tuning
570 */
571
572 /* FD_FDPERIOD_SELECT */
573 mt9t112_mcu_write(ret, client, VAR8(8, 5), 0x01);
574
575 /* PRI_B_CONFIG_FD_ALGO_RUN */
576 mt9t112_mcu_write(ret, client, VAR(27, 17), 0x0003);
577
578 /* PRI_A_CONFIG_FD_ALGO_RUN */
579 mt9t112_mcu_write(ret, client, VAR(26, 17), 0x0003);
580
581 /*
582 * AFD range detection tuning registers
583 */
584
585 /* search_f1_50 */
586 mt9t112_mcu_write(ret, client, VAR8(18, 165), 0x25);
587
588 /* search_f2_50 */
589 mt9t112_mcu_write(ret, client, VAR8(18, 166), 0x28);
590
591 /* search_f1_60 */
592 mt9t112_mcu_write(ret, client, VAR8(18, 167), 0x2C);
593
594 /* search_f2_60 */
595 mt9t112_mcu_write(ret, client, VAR8(18, 168), 0x2F);
596
597 /* period_50Hz (A) */
598 mt9t112_mcu_write(ret, client, VAR8(18, 68), 0xBA);
599
600 /* secret register by aptina */
601 /* period_50Hz (A MSB) */
602 mt9t112_mcu_write(ret, client, VAR8(18, 303), 0x00);
603
604 /* period_60Hz (A) */
605 mt9t112_mcu_write(ret, client, VAR8(18, 69), 0x9B);
606
607 /* secret register by aptina */
608 /* period_60Hz (A MSB) */
609 mt9t112_mcu_write(ret, client, VAR8(18, 301), 0x00);
610
611 /* period_50Hz (B) */
612 mt9t112_mcu_write(ret, client, VAR8(18, 140), 0x82);
613
614 /* secret register by aptina */
615 /* period_50Hz (B) MSB */
616 mt9t112_mcu_write(ret, client, VAR8(18, 304), 0x00);
617
618 /* period_60Hz (B) */
619 mt9t112_mcu_write(ret, client, VAR8(18, 141), 0x6D);
620
621 /* secret register by aptina */
622 /* period_60Hz (B) MSB */
623 mt9t112_mcu_write(ret, client, VAR8(18, 302), 0x00);
624
625 /* FD Mode */
626 mt9t112_mcu_write(ret, client, VAR8(8, 2), 0x10);
627
628 /* Stat_min */
629 mt9t112_mcu_write(ret, client, VAR8(8, 9), 0x02);
630
631 /* Stat_max */
632 mt9t112_mcu_write(ret, client, VAR8(8, 10), 0x03);
633
634 /* Min_amplitude */
635 mt9t112_mcu_write(ret, client, VAR8(8, 12), 0x0A);
636
637 /* RX FIFO Watermark (A) */
638 mt9t112_mcu_write(ret, client, VAR(18, 70), 0x0014);
639
640 /* RX FIFO Watermark (B) */
641 mt9t112_mcu_write(ret, client, VAR(18, 142), 0x0014);
642
643 /* MCLK: 16MHz
644 * PCLK: 73MHz
645 * CorePixCLK: 36.5 MHz
646 */
647 mt9t112_mcu_write(ret, client, VAR8(18, 0x0044), 133);
648 mt9t112_mcu_write(ret, client, VAR8(18, 0x0045), 110);
649 mt9t112_mcu_write(ret, client, VAR8(18, 0x008c), 130);
650 mt9t112_mcu_write(ret, client, VAR8(18, 0x008d), 108);
651
652 mt9t112_mcu_write(ret, client, VAR8(18, 0x00A5), 27);
653 mt9t112_mcu_write(ret, client, VAR8(18, 0x00a6), 30);
654 mt9t112_mcu_write(ret, client, VAR8(18, 0x00a7), 32);
655 mt9t112_mcu_write(ret, client, VAR8(18, 0x00a8), 35);
656
657 return ret;
658 }
659
660 static int mt9t112_auto_focus_setting(const struct i2c_client *client)
661 {
662 int ret;
663
664 mt9t112_mcu_write(ret, client, VAR(12, 13), 0x000F);
665 mt9t112_mcu_write(ret, client, VAR(12, 23), 0x0F0F);
666 mt9t112_mcu_write(ret, client, VAR8(1, 0), 0x06);
667
668 mt9t112_reg_write(ret, client, 0x0614, 0x0000);
669
670 mt9t112_mcu_write(ret, client, VAR8(1, 0), 0x05);
671 mt9t112_mcu_write(ret, client, VAR8(12, 2), 0x02);
672 mt9t112_mcu_write(ret, client, VAR(12, 3), 0x0002);
673 mt9t112_mcu_write(ret, client, VAR(17, 3), 0x8001);
674 mt9t112_mcu_write(ret, client, VAR(17, 11), 0x0025);
675 mt9t112_mcu_write(ret, client, VAR(17, 13), 0x0193);
676 mt9t112_mcu_write(ret, client, VAR8(17, 33), 0x18);
677 mt9t112_mcu_write(ret, client, VAR8(1, 0), 0x05);
678
679 return ret;
680 }
681
682 static int mt9t112_auto_focus_trigger(const struct i2c_client *client)
683 {
684 int ret;
685
686 mt9t112_mcu_write(ret, client, VAR8(12, 25), 0x01);
687
688 return ret;
689 }
690
691 static int mt9t112_init_camera(const struct i2c_client *client)
692 {
693 int ret;
694
695 ECHECKER(ret, mt9t112_reset(client));
696
697 ECHECKER(ret, mt9t112_init_pll(client));
698
699 ECHECKER(ret, mt9t112_init_setting(client));
700
701 ECHECKER(ret, mt9t112_auto_focus_setting(client));
702
703 mt9t112_reg_mask_set(ret, client, 0x0018, 0x0004, 0);
704
705 /* Analog setting B */
706 mt9t112_reg_write(ret, client, 0x3084, 0x2409);
707 mt9t112_reg_write(ret, client, 0x3092, 0x0A49);
708 mt9t112_reg_write(ret, client, 0x3094, 0x4949);
709 mt9t112_reg_write(ret, client, 0x3096, 0x4950);
710
711 /*
712 * Disable adaptive clock
713 * PRI_A_CONFIG_JPEG_OB_TX_CONTROL_VAR
714 * PRI_B_CONFIG_JPEG_OB_TX_CONTROL_VAR
715 */
716 mt9t112_mcu_write(ret, client, VAR(26, 160), 0x0A2E);
717 mt9t112_mcu_write(ret, client, VAR(27, 160), 0x0A2E);
718
719 /* Configure STatus in Status_before_length Format and enable header */
720 /* PRI_B_CONFIG_JPEG_OB_TX_CONTROL_VAR */
721 mt9t112_mcu_write(ret, client, VAR(27, 144), 0x0CB4);
722
723 /* Enable JPEG in context B */
724 /* PRI_B_CONFIG_JPEG_OB_TX_CONTROL_VAR */
725 mt9t112_mcu_write(ret, client, VAR8(27, 142), 0x01);
726
727 /* Disable Dac_TXLO */
728 mt9t112_reg_write(ret, client, 0x316C, 0x350F);
729
730 /* Set max slew rates */
731 mt9t112_reg_write(ret, client, 0x1E, 0x777);
732
733 return ret;
734 }
735
736 /************************************************************************
737 v4l2_subdev_core_ops
738 ************************************************************************/
739
740 #ifdef CONFIG_VIDEO_ADV_DEBUG
741 static int mt9t112_g_register(struct v4l2_subdev *sd,
742 struct v4l2_dbg_register *reg)
743 {
744 struct i2c_client *client = v4l2_get_subdevdata(sd);
745 int ret;
746
747 reg->size = 2;
748 mt9t112_reg_read(ret, client, reg->reg);
749
750 reg->val = (__u64)ret;
751
752 return 0;
753 }
754
755 static int mt9t112_s_register(struct v4l2_subdev *sd,
756 const struct v4l2_dbg_register *reg)
757 {
758 struct i2c_client *client = v4l2_get_subdevdata(sd);
759 int ret;
760
761 mt9t112_reg_write(ret, client, reg->reg, reg->val);
762
763 return ret;
764 }
765 #endif
766
767 static int mt9t112_s_power(struct v4l2_subdev *sd, int on)
768 {
769 struct i2c_client *client = v4l2_get_subdevdata(sd);
770 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
771 struct mt9t112_priv *priv = to_mt9t112(client);
772
773 return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
774 }
775
776 static struct v4l2_subdev_core_ops mt9t112_subdev_core_ops = {
777 #ifdef CONFIG_VIDEO_ADV_DEBUG
778 .g_register = mt9t112_g_register,
779 .s_register = mt9t112_s_register,
780 #endif
781 .s_power = mt9t112_s_power,
782 };
783
784
785 /************************************************************************
786 v4l2_subdev_video_ops
787 ************************************************************************/
788 static int mt9t112_s_stream(struct v4l2_subdev *sd, int enable)
789 {
790 struct i2c_client *client = v4l2_get_subdevdata(sd);
791 struct mt9t112_priv *priv = to_mt9t112(client);
792 int ret = 0;
793
794 if (!enable) {
795 /* FIXME
796 *
797 * If user selected large output size,
798 * and used it long time,
799 * mt9t112 camera will be very warm.
800 *
801 * But current driver can not stop mt9t112 camera.
802 * So, set small size here to solve this problem.
803 */
804 mt9t112_set_a_frame_size(client, VGA_WIDTH, VGA_HEIGHT);
805 return ret;
806 }
807
808 if (!(priv->flags & INIT_DONE)) {
809 u16 param = PCLK_RISING & priv->flags ? 0x0001 : 0x0000;
810
811 ECHECKER(ret, mt9t112_init_camera(client));
812
813 /* Invert PCLK (Data sampled on falling edge of pixclk) */
814 mt9t112_reg_write(ret, client, 0x3C20, param);
815
816 mdelay(5);
817
818 priv->flags |= INIT_DONE;
819 }
820
821 mt9t112_mcu_write(ret, client, VAR(26, 7), priv->format->fmt);
822 mt9t112_mcu_write(ret, client, VAR(26, 9), priv->format->order);
823 mt9t112_mcu_write(ret, client, VAR8(1, 0), 0x06);
824
825 mt9t112_set_a_frame_size(client,
826 priv->frame.width,
827 priv->frame.height);
828
829 ECHECKER(ret, mt9t112_auto_focus_trigger(client));
830
831 dev_dbg(&client->dev, "format : %d\n", priv->format->code);
832 dev_dbg(&client->dev, "size : %d x %d\n",
833 priv->frame.width,
834 priv->frame.height);
835
836 CLOCK_INFO(client, EXT_CLOCK);
837
838 return ret;
839 }
840
841 static int mt9t112_set_params(struct mt9t112_priv *priv,
842 const struct v4l2_rect *rect,
843 u32 code)
844 {
845 int i;
846
847 /*
848 * get color format
849 */
850 for (i = 0; i < priv->num_formats; i++)
851 if (mt9t112_cfmts[i].code == code)
852 break;
853
854 if (i == priv->num_formats)
855 return -EINVAL;
856
857 priv->frame = *rect;
858
859 /*
860 * frame size check
861 */
862 mt9t112_frame_check(&priv->frame.width, &priv->frame.height,
863 &priv->frame.left, &priv->frame.top);
864
865 priv->format = mt9t112_cfmts + i;
866
867 return 0;
868 }
869
870 static int mt9t112_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
871 {
872 a->bounds.left = 0;
873 a->bounds.top = 0;
874 a->bounds.width = MAX_WIDTH;
875 a->bounds.height = MAX_HEIGHT;
876 a->defrect.left = 0;
877 a->defrect.top = 0;
878 a->defrect.width = VGA_WIDTH;
879 a->defrect.height = VGA_HEIGHT;
880 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
881 a->pixelaspect.numerator = 1;
882 a->pixelaspect.denominator = 1;
883
884 return 0;
885 }
886
887 static int mt9t112_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
888 {
889 struct i2c_client *client = v4l2_get_subdevdata(sd);
890 struct mt9t112_priv *priv = to_mt9t112(client);
891
892 a->c = priv->frame;
893 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
894
895 return 0;
896 }
897
898 static int mt9t112_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a)
899 {
900 struct i2c_client *client = v4l2_get_subdevdata(sd);
901 struct mt9t112_priv *priv = to_mt9t112(client);
902 const struct v4l2_rect *rect = &a->c;
903
904 return mt9t112_set_params(priv, rect, priv->format->code);
905 }
906
907 static int mt9t112_get_fmt(struct v4l2_subdev *sd,
908 struct v4l2_subdev_pad_config *cfg,
909 struct v4l2_subdev_format *format)
910 {
911 struct v4l2_mbus_framefmt *mf = &format->format;
912 struct i2c_client *client = v4l2_get_subdevdata(sd);
913 struct mt9t112_priv *priv = to_mt9t112(client);
914
915 if (format->pad)
916 return -EINVAL;
917
918 mf->width = priv->frame.width;
919 mf->height = priv->frame.height;
920 mf->colorspace = priv->format->colorspace;
921 mf->code = priv->format->code;
922 mf->field = V4L2_FIELD_NONE;
923
924 return 0;
925 }
926
927 static int mt9t112_s_fmt(struct v4l2_subdev *sd,
928 struct v4l2_mbus_framefmt *mf)
929 {
930 struct i2c_client *client = v4l2_get_subdevdata(sd);
931 struct mt9t112_priv *priv = to_mt9t112(client);
932 struct v4l2_rect rect = {
933 .width = mf->width,
934 .height = mf->height,
935 .left = priv->frame.left,
936 .top = priv->frame.top,
937 };
938 int ret;
939
940 ret = mt9t112_set_params(priv, &rect, mf->code);
941
942 if (!ret)
943 mf->colorspace = priv->format->colorspace;
944
945 return ret;
946 }
947
948 static int mt9t112_set_fmt(struct v4l2_subdev *sd,
949 struct v4l2_subdev_pad_config *cfg,
950 struct v4l2_subdev_format *format)
951 {
952 struct v4l2_mbus_framefmt *mf = &format->format;
953 struct i2c_client *client = v4l2_get_subdevdata(sd);
954 struct mt9t112_priv *priv = to_mt9t112(client);
955 unsigned int top, left;
956 int i;
957
958 if (format->pad)
959 return -EINVAL;
960
961 for (i = 0; i < priv->num_formats; i++)
962 if (mt9t112_cfmts[i].code == mf->code)
963 break;
964
965 if (i == priv->num_formats) {
966 mf->code = MEDIA_BUS_FMT_UYVY8_2X8;
967 mf->colorspace = V4L2_COLORSPACE_JPEG;
968 } else {
969 mf->colorspace = mt9t112_cfmts[i].colorspace;
970 }
971
972 mt9t112_frame_check(&mf->width, &mf->height, &left, &top);
973
974 mf->field = V4L2_FIELD_NONE;
975
976 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
977 return mt9t112_s_fmt(sd, mf);
978 cfg->try_fmt = *mf;
979 return 0;
980 }
981
982 static int mt9t112_enum_mbus_code(struct v4l2_subdev *sd,
983 struct v4l2_subdev_pad_config *cfg,
984 struct v4l2_subdev_mbus_code_enum *code)
985 {
986 struct i2c_client *client = v4l2_get_subdevdata(sd);
987 struct mt9t112_priv *priv = to_mt9t112(client);
988
989 if (code->pad || code->index >= priv->num_formats)
990 return -EINVAL;
991
992 code->code = mt9t112_cfmts[code->index].code;
993
994 return 0;
995 }
996
997 static int mt9t112_g_mbus_config(struct v4l2_subdev *sd,
998 struct v4l2_mbus_config *cfg)
999 {
1000 struct i2c_client *client = v4l2_get_subdevdata(sd);
1001 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
1002
1003 cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
1004 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_DATA_ACTIVE_HIGH |
1005 V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING;
1006 cfg->type = V4L2_MBUS_PARALLEL;
1007 cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
1008
1009 return 0;
1010 }
1011
1012 static int mt9t112_s_mbus_config(struct v4l2_subdev *sd,
1013 const struct v4l2_mbus_config *cfg)
1014 {
1015 struct i2c_client *client = v4l2_get_subdevdata(sd);
1016 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
1017 struct mt9t112_priv *priv = to_mt9t112(client);
1018
1019 if (soc_camera_apply_board_flags(ssdd, cfg) & V4L2_MBUS_PCLK_SAMPLE_RISING)
1020 priv->flags |= PCLK_RISING;
1021
1022 return 0;
1023 }
1024
1025 static struct v4l2_subdev_video_ops mt9t112_subdev_video_ops = {
1026 .s_stream = mt9t112_s_stream,
1027 .cropcap = mt9t112_cropcap,
1028 .g_crop = mt9t112_g_crop,
1029 .s_crop = mt9t112_s_crop,
1030 .g_mbus_config = mt9t112_g_mbus_config,
1031 .s_mbus_config = mt9t112_s_mbus_config,
1032 };
1033
1034 static const struct v4l2_subdev_pad_ops mt9t112_subdev_pad_ops = {
1035 .enum_mbus_code = mt9t112_enum_mbus_code,
1036 .get_fmt = mt9t112_get_fmt,
1037 .set_fmt = mt9t112_set_fmt,
1038 };
1039
1040 /************************************************************************
1041 i2c driver
1042 ************************************************************************/
1043 static struct v4l2_subdev_ops mt9t112_subdev_ops = {
1044 .core = &mt9t112_subdev_core_ops,
1045 .video = &mt9t112_subdev_video_ops,
1046 .pad = &mt9t112_subdev_pad_ops,
1047 };
1048
1049 static int mt9t112_camera_probe(struct i2c_client *client)
1050 {
1051 struct mt9t112_priv *priv = to_mt9t112(client);
1052 const char *devname;
1053 int chipid;
1054 int ret;
1055
1056 ret = mt9t112_s_power(&priv->subdev, 1);
1057 if (ret < 0)
1058 return ret;
1059
1060 /*
1061 * check and show chip ID
1062 */
1063 mt9t112_reg_read(chipid, client, 0x0000);
1064
1065 switch (chipid) {
1066 case 0x2680:
1067 devname = "mt9t111";
1068 priv->num_formats = 1;
1069 break;
1070 case 0x2682:
1071 devname = "mt9t112";
1072 priv->num_formats = ARRAY_SIZE(mt9t112_cfmts);
1073 break;
1074 default:
1075 dev_err(&client->dev, "Product ID error %04x\n", chipid);
1076 ret = -ENODEV;
1077 goto done;
1078 }
1079
1080 dev_info(&client->dev, "%s chip ID %04x\n", devname, chipid);
1081
1082 done:
1083 mt9t112_s_power(&priv->subdev, 0);
1084 return ret;
1085 }
1086
1087 static int mt9t112_probe(struct i2c_client *client,
1088 const struct i2c_device_id *did)
1089 {
1090 struct mt9t112_priv *priv;
1091 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
1092 struct v4l2_rect rect = {
1093 .width = VGA_WIDTH,
1094 .height = VGA_HEIGHT,
1095 .left = (MAX_WIDTH - VGA_WIDTH) / 2,
1096 .top = (MAX_HEIGHT - VGA_HEIGHT) / 2,
1097 };
1098 int ret;
1099
1100 if (!ssdd || !ssdd->drv_priv) {
1101 dev_err(&client->dev, "mt9t112: missing platform data!\n");
1102 return -EINVAL;
1103 }
1104
1105 priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
1106 if (!priv)
1107 return -ENOMEM;
1108
1109 priv->info = ssdd->drv_priv;
1110
1111 v4l2_i2c_subdev_init(&priv->subdev, client, &mt9t112_subdev_ops);
1112
1113 priv->clk = v4l2_clk_get(&client->dev, "mclk");
1114 if (IS_ERR(priv->clk))
1115 return PTR_ERR(priv->clk);
1116
1117 ret = mt9t112_camera_probe(client);
1118
1119 /* Cannot fail: using the default supported pixel code */
1120 if (!ret)
1121 mt9t112_set_params(priv, &rect, MEDIA_BUS_FMT_UYVY8_2X8);
1122 else
1123 v4l2_clk_put(priv->clk);
1124
1125 return ret;
1126 }
1127
1128 static int mt9t112_remove(struct i2c_client *client)
1129 {
1130 struct mt9t112_priv *priv = to_mt9t112(client);
1131
1132 v4l2_clk_put(priv->clk);
1133 return 0;
1134 }
1135
1136 static const struct i2c_device_id mt9t112_id[] = {
1137 { "mt9t112", 0 },
1138 { }
1139 };
1140 MODULE_DEVICE_TABLE(i2c, mt9t112_id);
1141
1142 static struct i2c_driver mt9t112_i2c_driver = {
1143 .driver = {
1144 .name = "mt9t112",
1145 },
1146 .probe = mt9t112_probe,
1147 .remove = mt9t112_remove,
1148 .id_table = mt9t112_id,
1149 };
1150
1151 module_i2c_driver(mt9t112_i2c_driver);
1152
1153 MODULE_DESCRIPTION("SoC Camera driver for mt9t112");
1154 MODULE_AUTHOR("Kuninori Morimoto");
1155 MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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