1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2022 Intel Corporation.
3
4 #include <linux/unaligned.h>
5 #include <linux/acpi.h>
6 #include <linux/i2c.h>
7 #include <linux/module.h>
8 #include <linux/delay.h>
9 #include <linux/pm_runtime.h>
10 #include <media/v4l2-ctrls.h>
11 #include <media/v4l2-device.h>
12 #include <media/v4l2-fwnode.h>
13
14 #define OV08X40_REG_VALUE_08BIT 1
15 #define OV08X40_REG_VALUE_16BIT 2
16 #define OV08X40_REG_VALUE_24BIT 3
17
18 #define OV08X40_REG_MODE_SELECT 0x0100
19 #define OV08X40_MODE_STANDBY 0x00
20 #define OV08X40_MODE_STREAMING 0x01
21
22 #define OV08X40_REG_AO_STANDBY 0x1000
23 #define OV08X40_AO_STREAMING 0x04
24
25 #define OV08X40_REG_MS_SELECT 0x1001
26 #define OV08X40_MS_STANDBY 0x00
27 #define OV08X40_MS_STREAMING 0x04
28
29 #define OV08X40_REG_SOFTWARE_RST 0x0103
30 #define OV08X40_SOFTWARE_RST 0x01
31
32 /* Chip ID */
33 #define OV08X40_REG_CHIP_ID 0x300a
34 #define OV08X40_CHIP_ID 0x560858
35
36 /* V_TIMING internal */
37 #define OV08X40_REG_VTS 0x380e
38 #define OV08X40_VTS_30FPS 0x09c4 /* the VTS need to be half in normal mode */
39 #define OV08X40_VTS_BIN_30FPS 0x115c
40 #define OV08X40_VTS_MAX 0x7fff
41
42 /* H TIMING internal */
43 #define OV08X40_REG_HTS 0x380c
44 #define OV08X40_HTS_30FPS 0x0280
45
46 /* Exposure control */
47 #define OV08X40_REG_EXPOSURE 0x3500
48 #define OV08X40_EXPOSURE_MAX_MARGIN 8
49 #define OV08X40_EXPOSURE_BIN_MAX_MARGIN 2
50 #define OV08X40_EXPOSURE_MIN 4
51 #define OV08X40_EXPOSURE_STEP 1
52 #define OV08X40_EXPOSURE_DEFAULT 0x40
53
54 /* Short Exposure control */
55 #define OV08X40_REG_SHORT_EXPOSURE 0x3540
56
57 /* Analog gain control */
58 #define OV08X40_REG_ANALOG_GAIN 0x3508
59 #define OV08X40_ANA_GAIN_MIN 0x80
60 #define OV08X40_ANA_GAIN_MAX 0x07c0
61 #define OV08X40_ANA_GAIN_STEP 1
62 #define OV08X40_ANA_GAIN_DEFAULT 0x80
63
64 /* Digital gain control */
65 #define OV08X40_REG_DGTL_GAIN_H 0x350a
66 #define OV08X40_REG_DGTL_GAIN_M 0x350b
67 #define OV08X40_REG_DGTL_GAIN_L 0x350c
68
69 #define OV08X40_DGTL_GAIN_MIN 1024 /* Min = 1 X */
70 #define OV08X40_DGTL_GAIN_MAX (4096 - 1) /* Max = 4 X */
71 #define OV08X40_DGTL_GAIN_DEFAULT 2560 /* Default gain = 2.5 X */
72 #define OV08X40_DGTL_GAIN_STEP 1 /* Each step = 1/1024 */
73
74 #define OV08X40_DGTL_GAIN_L_SHIFT 6
75 #define OV08X40_DGTL_GAIN_L_MASK 0x3
76 #define OV08X40_DGTL_GAIN_M_SHIFT 2
77 #define OV08X40_DGTL_GAIN_M_MASK 0xff
78 #define OV08X40_DGTL_GAIN_H_SHIFT 10
79 #define OV08X40_DGTL_GAIN_H_MASK 0x1F
80
81 /* Test Pattern Control */
82 #define OV08X40_REG_TEST_PATTERN 0x50C1
83 #define OV08X40_REG_ISP 0x5000
84 #define OV08X40_REG_SHORT_TEST_PATTERN 0x53C1
85 #define OV08X40_TEST_PATTERN_ENABLE BIT(0)
86 #define OV08X40_TEST_PATTERN_MASK 0xcf
87 #define OV08X40_TEST_PATTERN_BAR_SHIFT 4
88
89 /* Flip Control */
90 #define OV08X40_REG_VFLIP 0x3820
91 #define OV08X40_REG_MIRROR 0x3821
92
93 /* Horizontal Window Offset */
94 #define OV08X40_REG_H_WIN_OFFSET 0x3811
95
96 /* Vertical Window Offset */
97 #define OV08X40_REG_V_WIN_OFFSET 0x3813
98
99 /* Burst Register */
100 #define OV08X40_REG_XTALK_FIRST_A 0x5a80
101 #define OV08X40_REG_XTALK_LAST_A 0x5b9f
102 #define OV08X40_REG_XTALK_FIRST_B 0x5bc0
103 #define OV08X40_REG_XTALK_LAST_B 0x5f1f
104
105 enum {
106 OV08X40_LINK_FREQ_400MHZ_INDEX,
107 };
108
109 struct ov08x40_reg {
110 u16 address;
111 u8 val;
112 };
113
114 struct ov08x40_reg_list {
115 u32 num_of_regs;
116 const struct ov08x40_reg *regs;
117 };
118
119 /* Link frequency config */
120 struct ov08x40_link_freq_config {
121 /* registers for this link frequency */
122 struct ov08x40_reg_list reg_list;
123 };
124
125 /* Mode : resolution and related config&values */
126 struct ov08x40_mode {
127 /* Frame width */
128 u32 width;
129 /* Frame height */
130 u32 height;
131
132 u32 lanes;
133 /* V-timing */
134 u32 vts_def;
135 u32 vts_min;
136
137 /* Line Length Pixels */
138 u32 llp;
139
140 /* Index of Link frequency config to be used */
141 u32 link_freq_index;
142 /* Default register values */
143 struct ov08x40_reg_list reg_list;
144
145 /* Exposure calculation */
146 u16 exposure_margin;
147 u16 exposure_shift;
148 };
149
150 static const struct ov08x40_reg mipi_data_rate_800mbps[] = {
151 {0x0103, 0x01},
152 {0x1000, 0x00},
153 {0x1601, 0xd0},
154 {0x1001, 0x04},
155 {0x5004, 0x53},
156 {0x5110, 0x00},
157 {0x5111, 0x14},
158 {0x5112, 0x01},
159 {0x5113, 0x7b},
160 {0x5114, 0x00},
161 {0x5152, 0xa3},
162 {0x5a52, 0x1f},
163 {0x5a1a, 0x0e},
164 {0x5a1b, 0x10},
165 {0x5a1f, 0x0e},
166 {0x5a27, 0x0e},
167 {0x6002, 0x2e},
168 };
169
170 static const struct ov08x40_reg mode_3856x2416_regs[] = {
171 {0x5000, 0x5d},
172 {0x5001, 0x20},
173 {0x5008, 0xb0},
174 {0x50c1, 0x00},
175 {0x53c1, 0x00},
176 {0x5f40, 0x00},
177 {0x5f41, 0x40},
178 {0x0300, 0x3a},
179 {0x0301, 0xc8},
180 {0x0302, 0x31},
181 {0x0303, 0x03},
182 {0x0304, 0x01},
183 {0x0305, 0xa1},
184 {0x0306, 0x04},
185 {0x0307, 0x01},
186 {0x0308, 0x03},
187 {0x0309, 0x03},
188 {0x0310, 0x0a},
189 {0x0311, 0x02},
190 {0x0312, 0x01},
191 {0x0313, 0x08},
192 {0x0314, 0x66},
193 {0x0315, 0x00},
194 {0x0316, 0x34},
195 {0x0320, 0x02},
196 {0x0321, 0x03},
197 {0x0323, 0x05},
198 {0x0324, 0x01},
199 {0x0325, 0xb8},
200 {0x0326, 0x4a},
201 {0x0327, 0x04},
202 {0x0329, 0x00},
203 {0x032a, 0x05},
204 {0x032b, 0x00},
205 {0x032c, 0x00},
206 {0x032d, 0x00},
207 {0x032e, 0x02},
208 {0x032f, 0xa0},
209 {0x0350, 0x00},
210 {0x0360, 0x01},
211 {0x1216, 0x60},
212 {0x1217, 0x5b},
213 {0x1218, 0x00},
214 {0x1220, 0x24},
215 {0x198a, 0x00},
216 {0x198b, 0x01},
217 {0x198e, 0x00},
218 {0x198f, 0x01},
219 {0x3009, 0x04},
220 {0x3012, 0x41},
221 {0x3015, 0x00},
222 {0x3016, 0xb0},
223 {0x3017, 0xf0},
224 {0x3018, 0xf0},
225 {0x3019, 0xd2},
226 {0x301a, 0xb0},
227 {0x301c, 0x81},
228 {0x301d, 0x02},
229 {0x301e, 0x80},
230 {0x3022, 0xf0},
231 {0x3025, 0x89},
232 {0x3030, 0x03},
233 {0x3044, 0xc2},
234 {0x3050, 0x35},
235 {0x3051, 0x60},
236 {0x3052, 0x25},
237 {0x3053, 0x00},
238 {0x3054, 0x00},
239 {0x3055, 0x02},
240 {0x3056, 0x80},
241 {0x3057, 0x80},
242 {0x3058, 0x80},
243 {0x3059, 0x00},
244 {0x3107, 0x86},
245 {0x3400, 0x1c},
246 {0x3401, 0x80},
247 {0x3402, 0x8c},
248 {0x3419, 0x13},
249 {0x341a, 0x89},
250 {0x341b, 0x30},
251 {0x3420, 0x00},
252 {0x3421, 0x00},
253 {0x3422, 0x00},
254 {0x3423, 0x00},
255 {0x3424, 0x00},
256 {0x3425, 0x00},
257 {0x3426, 0x00},
258 {0x3427, 0x00},
259 {0x3428, 0x0f},
260 {0x3429, 0x00},
261 {0x342a, 0x00},
262 {0x342b, 0x00},
263 {0x342c, 0x00},
264 {0x342d, 0x00},
265 {0x342e, 0x00},
266 {0x342f, 0x11},
267 {0x3430, 0x11},
268 {0x3431, 0x10},
269 {0x3432, 0x00},
270 {0x3433, 0x00},
271 {0x3434, 0x00},
272 {0x3435, 0x00},
273 {0x3436, 0x00},
274 {0x3437, 0x00},
275 {0x3442, 0x02},
276 {0x3443, 0x02},
277 {0x3444, 0x07},
278 {0x3450, 0x00},
279 {0x3451, 0x00},
280 {0x3452, 0x18},
281 {0x3453, 0x18},
282 {0x3454, 0x00},
283 {0x3455, 0x80},
284 {0x3456, 0x08},
285 {0x3500, 0x00},
286 {0x3501, 0x02},
287 {0x3502, 0x00},
288 {0x3504, 0x4c},
289 {0x3506, 0x30},
290 {0x3507, 0x00},
291 {0x3508, 0x01},
292 {0x3509, 0x00},
293 {0x350a, 0x01},
294 {0x350b, 0x00},
295 {0x350c, 0x00},
296 {0x3540, 0x00},
297 {0x3541, 0x01},
298 {0x3542, 0x00},
299 {0x3544, 0x4c},
300 {0x3546, 0x30},
301 {0x3547, 0x00},
302 {0x3548, 0x01},
303 {0x3549, 0x00},
304 {0x354a, 0x01},
305 {0x354b, 0x00},
306 {0x354c, 0x00},
307 {0x3688, 0x02},
308 {0x368a, 0x2e},
309 {0x368e, 0x71},
310 {0x3696, 0xd1},
311 {0x3699, 0x00},
312 {0x369a, 0x00},
313 {0x36a4, 0x00},
314 {0x36a6, 0x00},
315 {0x3711, 0x00},
316 {0x3712, 0x51},
317 {0x3713, 0x00},
318 {0x3714, 0x24},
319 {0x3716, 0x00},
320 {0x3718, 0x07},
321 {0x371a, 0x1c},
322 {0x371b, 0x00},
323 {0x3720, 0x08},
324 {0x3725, 0x32},
325 {0x3727, 0x05},
326 {0x3760, 0x02},
327 {0x3761, 0x17},
328 {0x3762, 0x02},
329 {0x3763, 0x02},
330 {0x3764, 0x02},
331 {0x3765, 0x2c},
332 {0x3766, 0x04},
333 {0x3767, 0x2c},
334 {0x3768, 0x02},
335 {0x3769, 0x00},
336 {0x376b, 0x20},
337 {0x376e, 0x03},
338 {0x37b0, 0x00},
339 {0x37b1, 0xab},
340 {0x37b2, 0x01},
341 {0x37b3, 0x82},
342 {0x37b4, 0x00},
343 {0x37b5, 0xe4},
344 {0x37b6, 0x01},
345 {0x37b7, 0xee},
346 {0x3800, 0x00},
347 {0x3801, 0x00},
348 {0x3802, 0x00},
349 {0x3803, 0x00},
350 {0x3804, 0x0f},
351 {0x3805, 0x1f},
352 {0x3806, 0x09},
353 {0x3807, 0x7f},
354 {0x3808, 0x0f},
355 {0x3809, 0x10},
356 {0x380a, 0x09},
357 {0x380b, 0x70},
358 {0x380c, 0x02},
359 {0x380d, 0x80},
360 {0x380e, 0x13},
361 {0x380f, 0x88},
362 {0x3810, 0x00},
363 {0x3811, 0x08},
364 {0x3812, 0x00},
365 {0x3813, 0x07},
366 {0x3814, 0x11},
367 {0x3815, 0x11},
368 {0x3820, 0x00},
369 {0x3821, 0x04},
370 {0x3822, 0x00},
371 {0x3823, 0x04},
372 {0x3828, 0x0f},
373 {0x382a, 0x80},
374 {0x382e, 0x41},
375 {0x3837, 0x08},
376 {0x383a, 0x81},
377 {0x383b, 0x81},
378 {0x383c, 0x11},
379 {0x383d, 0x11},
380 {0x383e, 0x00},
381 {0x383f, 0x38},
382 {0x3840, 0x00},
383 {0x3847, 0x00},
384 {0x384a, 0x00},
385 {0x384c, 0x02},
386 {0x384d, 0x80},
387 {0x3856, 0x50},
388 {0x3857, 0x30},
389 {0x3858, 0x80},
390 {0x3859, 0x40},
391 {0x3860, 0x00},
392 {0x3888, 0x00},
393 {0x3889, 0x00},
394 {0x388a, 0x00},
395 {0x388b, 0x00},
396 {0x388c, 0x00},
397 {0x388d, 0x00},
398 {0x388e, 0x00},
399 {0x388f, 0x00},
400 {0x3894, 0x00},
401 {0x3895, 0x00},
402 {0x3c84, 0x00},
403 {0x3d85, 0x8b},
404 {0x3daa, 0x80},
405 {0x3dab, 0x14},
406 {0x3dac, 0x80},
407 {0x3dad, 0xc8},
408 {0x3dae, 0x81},
409 {0x3daf, 0x7b},
410 {0x3f00, 0x10},
411 {0x3f01, 0x11},
412 {0x3f06, 0x0d},
413 {0x3f07, 0x0b},
414 {0x3f08, 0x0d},
415 {0x3f09, 0x0b},
416 {0x3f0a, 0x01},
417 {0x3f0b, 0x11},
418 {0x3f0c, 0x33},
419 {0x4001, 0x07},
420 {0x4007, 0x20},
421 {0x4008, 0x00},
422 {0x4009, 0x05},
423 {0x400a, 0x00},
424 {0x400b, 0x08},
425 {0x400c, 0x00},
426 {0x400d, 0x08},
427 {0x400e, 0x14},
428 {0x4010, 0xf4},
429 {0x4011, 0x03},
430 {0x4012, 0x55},
431 {0x4015, 0x00},
432 {0x4016, 0x2d},
433 {0x4017, 0x00},
434 {0x4018, 0x0f},
435 {0x401b, 0x08},
436 {0x401c, 0x00},
437 {0x401d, 0x10},
438 {0x401e, 0x02},
439 {0x401f, 0x00},
440 {0x4050, 0x06},
441 {0x4051, 0xff},
442 {0x4052, 0xff},
443 {0x4053, 0xff},
444 {0x4054, 0xff},
445 {0x4055, 0xff},
446 {0x4056, 0xff},
447 {0x4057, 0x7f},
448 {0x4058, 0x00},
449 {0x4059, 0x00},
450 {0x405a, 0x00},
451 {0x405b, 0x00},
452 {0x405c, 0x07},
453 {0x405d, 0xff},
454 {0x405e, 0x07},
455 {0x405f, 0xff},
456 {0x4080, 0x78},
457 {0x4081, 0x78},
458 {0x4082, 0x78},
459 {0x4083, 0x78},
460 {0x4019, 0x00},
461 {0x401a, 0x40},
462 {0x4020, 0x04},
463 {0x4021, 0x00},
464 {0x4022, 0x04},
465 {0x4023, 0x00},
466 {0x4024, 0x04},
467 {0x4025, 0x00},
468 {0x4026, 0x04},
469 {0x4027, 0x00},
470 {0x4030, 0x00},
471 {0x4031, 0x00},
472 {0x4032, 0x00},
473 {0x4033, 0x00},
474 {0x4034, 0x00},
475 {0x4035, 0x00},
476 {0x4036, 0x00},
477 {0x4037, 0x00},
478 {0x4040, 0x00},
479 {0x4041, 0x80},
480 {0x4042, 0x00},
481 {0x4043, 0x80},
482 {0x4044, 0x00},
483 {0x4045, 0x80},
484 {0x4046, 0x00},
485 {0x4047, 0x80},
486 {0x4060, 0x00},
487 {0x4061, 0x00},
488 {0x4062, 0x00},
489 {0x4063, 0x00},
490 {0x4064, 0x00},
491 {0x4065, 0x00},
492 {0x4066, 0x00},
493 {0x4067, 0x00},
494 {0x4068, 0x00},
495 {0x4069, 0x00},
496 {0x406a, 0x00},
497 {0x406b, 0x00},
498 {0x406c, 0x00},
499 {0x406d, 0x00},
500 {0x406e, 0x00},
501 {0x406f, 0x00},
502 {0x4070, 0x00},
503 {0x4071, 0x00},
504 {0x4072, 0x00},
505 {0x4073, 0x00},
506 {0x4074, 0x00},
507 {0x4075, 0x00},
508 {0x4076, 0x00},
509 {0x4077, 0x00},
510 {0x4078, 0x00},
511 {0x4079, 0x00},
512 {0x407a, 0x00},
513 {0x407b, 0x00},
514 {0x407c, 0x00},
515 {0x407d, 0x00},
516 {0x407e, 0x00},
517 {0x407f, 0x00},
518 {0x40e0, 0x00},
519 {0x40e1, 0x00},
520 {0x40e2, 0x00},
521 {0x40e3, 0x00},
522 {0x40e4, 0x00},
523 {0x40e5, 0x00},
524 {0x40e6, 0x00},
525 {0x40e7, 0x00},
526 {0x40e8, 0x00},
527 {0x40e9, 0x80},
528 {0x40ea, 0x00},
529 {0x40eb, 0x80},
530 {0x40ec, 0x00},
531 {0x40ed, 0x80},
532 {0x40ee, 0x00},
533 {0x40ef, 0x80},
534 {0x40f0, 0x02},
535 {0x40f1, 0x04},
536 {0x4300, 0x00},
537 {0x4301, 0x00},
538 {0x4302, 0x00},
539 {0x4303, 0x00},
540 {0x4304, 0x00},
541 {0x4305, 0x00},
542 {0x4306, 0x00},
543 {0x4307, 0x00},
544 {0x4308, 0x00},
545 {0x4309, 0x00},
546 {0x430a, 0x00},
547 {0x430b, 0xff},
548 {0x430c, 0xff},
549 {0x430d, 0x00},
550 {0x430e, 0x00},
551 {0x4315, 0x00},
552 {0x4316, 0x00},
553 {0x4317, 0x00},
554 {0x4318, 0x00},
555 {0x4319, 0x00},
556 {0x431a, 0x00},
557 {0x431b, 0x00},
558 {0x431c, 0x00},
559 {0x4500, 0x07},
560 {0x4501, 0x00},
561 {0x4502, 0x00},
562 {0x4503, 0x0f},
563 {0x4504, 0x80},
564 {0x4506, 0x01},
565 {0x4509, 0x05},
566 {0x450c, 0x00},
567 {0x450d, 0x20},
568 {0x450e, 0x00},
569 {0x450f, 0x00},
570 {0x4510, 0x00},
571 {0x4523, 0x00},
572 {0x4526, 0x00},
573 {0x4542, 0x00},
574 {0x4543, 0x00},
575 {0x4544, 0x00},
576 {0x4545, 0x00},
577 {0x4546, 0x00},
578 {0x4547, 0x10},
579 {0x4602, 0x00},
580 {0x4603, 0x15},
581 {0x460b, 0x07},
582 {0x4680, 0x11},
583 {0x4686, 0x00},
584 {0x4687, 0x00},
585 {0x4700, 0x00},
586 {0x4800, 0x64},
587 {0x4806, 0x40},
588 {0x480b, 0x10},
589 {0x480c, 0x80},
590 {0x480f, 0x32},
591 {0x4813, 0xe4},
592 {0x4837, 0x14},
593 {0x4850, 0x42},
594 {0x4884, 0x04},
595 {0x4c00, 0xf8},
596 {0x4c01, 0x44},
597 {0x4c03, 0x00},
598 {0x4d00, 0x00},
599 {0x4d01, 0x16},
600 {0x4d04, 0x10},
601 {0x4d05, 0x00},
602 {0x4d06, 0x0c},
603 {0x4d07, 0x00},
604 {0x3d84, 0x04},
605 {0x3680, 0xa4},
606 {0x3682, 0x80},
607 {0x3601, 0x40},
608 {0x3602, 0x90},
609 {0x3608, 0x0a},
610 {0x3938, 0x09},
611 {0x3a74, 0x84},
612 {0x3a99, 0x84},
613 {0x3ab9, 0xa6},
614 {0x3aba, 0xba},
615 {0x3b12, 0x84},
616 {0x3b14, 0xbb},
617 {0x3b15, 0xbf},
618 {0x3a29, 0x26},
619 {0x3a1f, 0x8a},
620 {0x3a22, 0x91},
621 {0x3a25, 0x96},
622 {0x3a28, 0xb4},
623 {0x3a2b, 0xba},
624 {0x3a2e, 0xbf},
625 {0x3a31, 0xc1},
626 {0x3a20, 0x00},
627 {0x3939, 0x9d},
628 {0x3902, 0x0e},
629 {0x3903, 0x0e},
630 {0x3904, 0x0e},
631 {0x3905, 0x0e},
632 {0x3906, 0x07},
633 {0x3907, 0x0d},
634 {0x3908, 0x11},
635 {0x3909, 0x12},
636 {0x360f, 0x99},
637 {0x390c, 0x33},
638 {0x390d, 0x66},
639 {0x390e, 0xaa},
640 {0x3911, 0x90},
641 {0x3913, 0x90},
642 {0x3915, 0x90},
643 {0x3917, 0x90},
644 {0x3b3f, 0x9d},
645 {0x3b45, 0x9d},
646 {0x3b1b, 0xc9},
647 {0x3b21, 0xc9},
648 {0x3440, 0xa4},
649 {0x3a23, 0x15},
650 {0x3a26, 0x1d},
651 {0x3a2c, 0x4a},
652 {0x3a2f, 0x18},
653 {0x3a32, 0x55},
654 {0x3b0a, 0x01},
655 {0x3b0b, 0x00},
656 {0x3b0e, 0x01},
657 {0x3b0f, 0x00},
658 {0x392c, 0x02},
659 {0x392d, 0x02},
660 {0x392e, 0x04},
661 {0x392f, 0x03},
662 {0x3930, 0x08},
663 {0x3931, 0x07},
664 {0x3932, 0x10},
665 {0x3933, 0x0c},
666 {0x3609, 0x08},
667 {0x3921, 0x0f},
668 {0x3928, 0x15},
669 {0x3929, 0x2a},
670 {0x392a, 0x54},
671 {0x392b, 0xa8},
672 {0x3426, 0x10},
673 {0x3407, 0x01},
674 {0x3404, 0x01},
675 {0x3500, 0x00},
676 {0x3501, 0x10},
677 {0x3502, 0x10},
678 {0x3508, 0x0f},
679 {0x3509, 0x80},
680 };
681
682 static const struct ov08x40_reg mode_1928x1208_regs[] = {
683 {0x5000, 0x55},
684 {0x5001, 0x00},
685 {0x5008, 0xb0},
686 {0x50c1, 0x00},
687 {0x53c1, 0x00},
688 {0x5f40, 0x00},
689 {0x5f41, 0x40},
690 {0x0300, 0x3a},
691 {0x0301, 0xc8},
692 {0x0302, 0x31},
693 {0x0303, 0x03},
694 {0x0304, 0x01},
695 {0x0305, 0xa1},
696 {0x0306, 0x04},
697 {0x0307, 0x01},
698 {0x0308, 0x03},
699 {0x0309, 0x03},
700 {0x0310, 0x0a},
701 {0x0311, 0x02},
702 {0x0312, 0x01},
703 {0x0313, 0x08},
704 {0x0314, 0x66},
705 {0x0315, 0x00},
706 {0x0316, 0x34},
707 {0x0320, 0x02},
708 {0x0321, 0x03},
709 {0x0323, 0x05},
710 {0x0324, 0x01},
711 {0x0325, 0xb8},
712 {0x0326, 0x4a},
713 {0x0327, 0x04},
714 {0x0329, 0x00},
715 {0x032a, 0x05},
716 {0x032b, 0x00},
717 {0x032c, 0x00},
718 {0x032d, 0x00},
719 {0x032e, 0x02},
720 {0x032f, 0xa0},
721 {0x0350, 0x00},
722 {0x0360, 0x01},
723 {0x1216, 0x60},
724 {0x1217, 0x5b},
725 {0x1218, 0x00},
726 {0x1220, 0x24},
727 {0x198a, 0x00},
728 {0x198b, 0x01},
729 {0x198e, 0x00},
730 {0x198f, 0x01},
731 {0x3009, 0x04},
732 {0x3012, 0x41},
733 {0x3015, 0x00},
734 {0x3016, 0xb0},
735 {0x3017, 0xf0},
736 {0x3018, 0xf0},
737 {0x3019, 0xd2},
738 {0x301a, 0xb0},
739 {0x301c, 0x81},
740 {0x301d, 0x02},
741 {0x301e, 0x80},
742 {0x3022, 0xf0},
743 {0x3025, 0x89},
744 {0x3030, 0x03},
745 {0x3044, 0xc2},
746 {0x3050, 0x35},
747 {0x3051, 0x60},
748 {0x3052, 0x25},
749 {0x3053, 0x00},
750 {0x3054, 0x00},
751 {0x3055, 0x02},
752 {0x3056, 0x80},
753 {0x3057, 0x80},
754 {0x3058, 0x80},
755 {0x3059, 0x00},
756 {0x3107, 0x86},
757 {0x3400, 0x1c},
758 {0x3401, 0x80},
759 {0x3402, 0x8c},
760 {0x3419, 0x08},
761 {0x341a, 0xaf},
762 {0x341b, 0x30},
763 {0x3420, 0x00},
764 {0x3421, 0x00},
765 {0x3422, 0x00},
766 {0x3423, 0x00},
767 {0x3424, 0x00},
768 {0x3425, 0x00},
769 {0x3426, 0x00},
770 {0x3427, 0x00},
771 {0x3428, 0x0f},
772 {0x3429, 0x00},
773 {0x342a, 0x00},
774 {0x342b, 0x00},
775 {0x342c, 0x00},
776 {0x342d, 0x00},
777 {0x342e, 0x00},
778 {0x342f, 0x11},
779 {0x3430, 0x11},
780 {0x3431, 0x10},
781 {0x3432, 0x00},
782 {0x3433, 0x00},
783 {0x3434, 0x00},
784 {0x3435, 0x00},
785 {0x3436, 0x00},
786 {0x3437, 0x00},
787 {0x3442, 0x02},
788 {0x3443, 0x02},
789 {0x3444, 0x07},
790 {0x3450, 0x00},
791 {0x3451, 0x00},
792 {0x3452, 0x18},
793 {0x3453, 0x18},
794 {0x3454, 0x00},
795 {0x3455, 0x80},
796 {0x3456, 0x08},
797 {0x3500, 0x00},
798 {0x3501, 0x02},
799 {0x3502, 0x00},
800 {0x3504, 0x4c},
801 {0x3506, 0x30},
802 {0x3507, 0x00},
803 {0x3508, 0x01},
804 {0x3509, 0x00},
805 {0x350a, 0x01},
806 {0x350b, 0x00},
807 {0x350c, 0x00},
808 {0x3540, 0x00},
809 {0x3541, 0x01},
810 {0x3542, 0x00},
811 {0x3544, 0x4c},
812 {0x3546, 0x30},
813 {0x3547, 0x00},
814 {0x3548, 0x01},
815 {0x3549, 0x00},
816 {0x354a, 0x01},
817 {0x354b, 0x00},
818 {0x354c, 0x00},
819 {0x3688, 0x02},
820 {0x368a, 0x2e},
821 {0x368e, 0x71},
822 {0x3696, 0xd1},
823 {0x3699, 0x00},
824 {0x369a, 0x00},
825 {0x36a4, 0x00},
826 {0x36a6, 0x00},
827 {0x3711, 0x00},
828 {0x3712, 0x50},
829 {0x3713, 0x00},
830 {0x3714, 0x21},
831 {0x3716, 0x00},
832 {0x3718, 0x07},
833 {0x371a, 0x1c},
834 {0x371b, 0x00},
835 {0x3720, 0x08},
836 {0x3725, 0x32},
837 {0x3727, 0x05},
838 {0x3760, 0x02},
839 {0x3761, 0x28},
840 {0x3762, 0x02},
841 {0x3763, 0x02},
842 {0x3764, 0x02},
843 {0x3765, 0x2c},
844 {0x3766, 0x04},
845 {0x3767, 0x2c},
846 {0x3768, 0x02},
847 {0x3769, 0x00},
848 {0x376b, 0x20},
849 {0x376e, 0x07},
850 {0x37b0, 0x01},
851 {0x37b1, 0x0f},
852 {0x37b2, 0x01},
853 {0x37b3, 0xd6},
854 {0x37b4, 0x01},
855 {0x37b5, 0x48},
856 {0x37b6, 0x02},
857 {0x37b7, 0x40},
858 {0x3800, 0x00},
859 {0x3801, 0x00},
860 {0x3802, 0x00},
861 {0x3803, 0x00},
862 {0x3804, 0x0f},
863 {0x3805, 0x1f},
864 {0x3806, 0x09},
865 {0x3807, 0x7f},
866 {0x3808, 0x07},
867 {0x3809, 0x88},
868 {0x380a, 0x04},
869 {0x380b, 0xb8},
870 {0x380c, 0x02},
871 {0x380d, 0xd0},
872 {0x380e, 0x11},
873 {0x380f, 0x5c},
874 {0x3810, 0x00},
875 {0x3811, 0x04},
876 {0x3812, 0x00},
877 {0x3813, 0x03},
878 {0x3814, 0x11},
879 {0x3815, 0x11},
880 {0x3820, 0x02},
881 {0x3821, 0x14},
882 {0x3822, 0x00},
883 {0x3823, 0x04},
884 {0x3828, 0x0f},
885 {0x382a, 0x80},
886 {0x382e, 0x41},
887 {0x3837, 0x08},
888 {0x383a, 0x81},
889 {0x383b, 0x81},
890 {0x383c, 0x11},
891 {0x383d, 0x11},
892 {0x383e, 0x00},
893 {0x383f, 0x38},
894 {0x3840, 0x00},
895 {0x3847, 0x00},
896 {0x384a, 0x00},
897 {0x384c, 0x02},
898 {0x384d, 0xd0},
899 {0x3856, 0x50},
900 {0x3857, 0x30},
901 {0x3858, 0x80},
902 {0x3859, 0x40},
903 {0x3860, 0x00},
904 {0x3888, 0x00},
905 {0x3889, 0x00},
906 {0x388a, 0x00},
907 {0x388b, 0x00},
908 {0x388c, 0x00},
909 {0x388d, 0x00},
910 {0x388e, 0x00},
911 {0x388f, 0x00},
912 {0x3894, 0x00},
913 {0x3895, 0x00},
914 {0x3c84, 0x00},
915 {0x3d85, 0x8b},
916 {0x3daa, 0x80},
917 {0x3dab, 0x14},
918 {0x3dac, 0x80},
919 {0x3dad, 0xc8},
920 {0x3dae, 0x81},
921 {0x3daf, 0x7b},
922 {0x3f00, 0x10},
923 {0x3f01, 0x11},
924 {0x3f06, 0x0d},
925 {0x3f07, 0x0b},
926 {0x3f08, 0x0d},
927 {0x3f09, 0x0b},
928 {0x3f0a, 0x01},
929 {0x3f0b, 0x11},
930 {0x3f0c, 0x33},
931 {0x4001, 0x07},
932 {0x4007, 0x20},
933 {0x4008, 0x00},
934 {0x4009, 0x05},
935 {0x400a, 0x00},
936 {0x400b, 0x04},
937 {0x400c, 0x00},
938 {0x400d, 0x04},
939 {0x400e, 0x14},
940 {0x4010, 0xf4},
941 {0x4011, 0x03},
942 {0x4012, 0x55},
943 {0x4015, 0x00},
944 {0x4016, 0x27},
945 {0x4017, 0x00},
946 {0x4018, 0x0f},
947 {0x401b, 0x08},
948 {0x401c, 0x00},
949 {0x401d, 0x10},
950 {0x401e, 0x02},
951 {0x401f, 0x00},
952 {0x4050, 0x06},
953 {0x4051, 0xff},
954 {0x4052, 0xff},
955 {0x4053, 0xff},
956 {0x4054, 0xff},
957 {0x4055, 0xff},
958 {0x4056, 0xff},
959 {0x4057, 0x7f},
960 {0x4058, 0x00},
961 {0x4059, 0x00},
962 {0x405a, 0x00},
963 {0x405b, 0x00},
964 {0x405c, 0x07},
965 {0x405d, 0xff},
966 {0x405e, 0x07},
967 {0x405f, 0xff},
968 {0x4080, 0x78},
969 {0x4081, 0x78},
970 {0x4082, 0x78},
971 {0x4083, 0x78},
972 {0x4019, 0x00},
973 {0x401a, 0x40},
974 {0x4020, 0x04},
975 {0x4021, 0x00},
976 {0x4022, 0x04},
977 {0x4023, 0x00},
978 {0x4024, 0x04},
979 {0x4025, 0x00},
980 {0x4026, 0x04},
981 {0x4027, 0x00},
982 {0x4030, 0x00},
983 {0x4031, 0x00},
984 {0x4032, 0x00},
985 {0x4033, 0x00},
986 {0x4034, 0x00},
987 {0x4035, 0x00},
988 {0x4036, 0x00},
989 {0x4037, 0x00},
990 {0x4040, 0x00},
991 {0x4041, 0x80},
992 {0x4042, 0x00},
993 {0x4043, 0x80},
994 {0x4044, 0x00},
995 {0x4045, 0x80},
996 {0x4046, 0x00},
997 {0x4047, 0x80},
998 {0x4060, 0x00},
999 {0x4061, 0x00},
1000 {0x4062, 0x00},
1001 {0x4063, 0x00},
1002 {0x4064, 0x00},
1003 {0x4065, 0x00},
1004 {0x4066, 0x00},
1005 {0x4067, 0x00},
1006 {0x4068, 0x00},
1007 {0x4069, 0x00},
1008 {0x406a, 0x00},
1009 {0x406b, 0x00},
1010 {0x406c, 0x00},
1011 {0x406d, 0x00},
1012 {0x406e, 0x00},
1013 {0x406f, 0x00},
1014 {0x4070, 0x00},
1015 {0x4071, 0x00},
1016 {0x4072, 0x00},
1017 {0x4073, 0x00},
1018 {0x4074, 0x00},
1019 {0x4075, 0x00},
1020 {0x4076, 0x00},
1021 {0x4077, 0x00},
1022 {0x4078, 0x00},
1023 {0x4079, 0x00},
1024 {0x407a, 0x00},
1025 {0x407b, 0x00},
1026 {0x407c, 0x00},
1027 {0x407d, 0x00},
1028 {0x407e, 0x00},
1029 {0x407f, 0x00},
1030 {0x40e0, 0x00},
1031 {0x40e1, 0x00},
1032 {0x40e2, 0x00},
1033 {0x40e3, 0x00},
1034 {0x40e4, 0x00},
1035 {0x40e5, 0x00},
1036 {0x40e6, 0x00},
1037 {0x40e7, 0x00},
1038 {0x40e8, 0x00},
1039 {0x40e9, 0x80},
1040 {0x40ea, 0x00},
1041 {0x40eb, 0x80},
1042 {0x40ec, 0x00},
1043 {0x40ed, 0x80},
1044 {0x40ee, 0x00},
1045 {0x40ef, 0x80},
1046 {0x40f0, 0x02},
1047 {0x40f1, 0x04},
1048 {0x4300, 0x00},
1049 {0x4301, 0x00},
1050 {0x4302, 0x00},
1051 {0x4303, 0x00},
1052 {0x4304, 0x00},
1053 {0x4305, 0x00},
1054 {0x4306, 0x00},
1055 {0x4307, 0x00},
1056 {0x4308, 0x00},
1057 {0x4309, 0x00},
1058 {0x430a, 0x00},
1059 {0x430b, 0xff},
1060 {0x430c, 0xff},
1061 {0x430d, 0x00},
1062 {0x430e, 0x00},
1063 {0x4315, 0x00},
1064 {0x4316, 0x00},
1065 {0x4317, 0x00},
1066 {0x4318, 0x00},
1067 {0x4319, 0x00},
1068 {0x431a, 0x00},
1069 {0x431b, 0x00},
1070 {0x431c, 0x00},
1071 {0x4500, 0x07},
1072 {0x4501, 0x10},
1073 {0x4502, 0x00},
1074 {0x4503, 0x0f},
1075 {0x4504, 0x80},
1076 {0x4506, 0x01},
1077 {0x4509, 0x05},
1078 {0x450c, 0x00},
1079 {0x450d, 0x20},
1080 {0x450e, 0x00},
1081 {0x450f, 0x00},
1082 {0x4510, 0x00},
1083 {0x4523, 0x00},
1084 {0x4526, 0x00},
1085 {0x4542, 0x00},
1086 {0x4543, 0x00},
1087 {0x4544, 0x00},
1088 {0x4545, 0x00},
1089 {0x4546, 0x00},
1090 {0x4547, 0x10},
1091 {0x4602, 0x00},
1092 {0x4603, 0x15},
1093 {0x460b, 0x07},
1094 {0x4680, 0x11},
1095 {0x4686, 0x00},
1096 {0x4687, 0x00},
1097 {0x4700, 0x00},
1098 {0x4800, 0x64},
1099 {0x4806, 0x40},
1100 {0x480b, 0x10},
1101 {0x480c, 0x80},
1102 {0x480f, 0x32},
1103 {0x4813, 0xe4},
1104 {0x4837, 0x14},
1105 {0x4850, 0x42},
1106 {0x4884, 0x04},
1107 {0x4c00, 0xf8},
1108 {0x4c01, 0x44},
1109 {0x4c03, 0x00},
1110 {0x4d00, 0x00},
1111 {0x4d01, 0x16},
1112 {0x4d04, 0x10},
1113 {0x4d05, 0x00},
1114 {0x4d06, 0x0c},
1115 {0x4d07, 0x00},
1116 {0x3d84, 0x04},
1117 {0x3680, 0xa4},
1118 {0x3682, 0x80},
1119 {0x3601, 0x40},
1120 {0x3602, 0x90},
1121 {0x3608, 0x0a},
1122 {0x3938, 0x09},
1123 {0x3a74, 0x84},
1124 {0x3a99, 0x84},
1125 {0x3ab9, 0xa6},
1126 {0x3aba, 0xba},
1127 {0x3b12, 0x84},
1128 {0x3b14, 0xbb},
1129 {0x3b15, 0xbf},
1130 {0x3a29, 0x26},
1131 {0x3a1f, 0x8a},
1132 {0x3a22, 0x91},
1133 {0x3a25, 0x96},
1134 {0x3a28, 0xb4},
1135 {0x3a2b, 0xba},
1136 {0x3a2e, 0xbf},
1137 {0x3a31, 0xc1},
1138 {0x3a20, 0x05},
1139 {0x3939, 0x6b},
1140 {0x3902, 0x10},
1141 {0x3903, 0x10},
1142 {0x3904, 0x10},
1143 {0x3905, 0x10},
1144 {0x3906, 0x01},
1145 {0x3907, 0x0b},
1146 {0x3908, 0x10},
1147 {0x3909, 0x13},
1148 {0x360f, 0x99},
1149 {0x390b, 0x11},
1150 {0x390c, 0x21},
1151 {0x390d, 0x32},
1152 {0x390e, 0x76},
1153 {0x3911, 0x90},
1154 {0x3913, 0x90},
1155 {0x3b3f, 0x9d},
1156 {0x3b45, 0x9d},
1157 {0x3b1b, 0xc9},
1158 {0x3b21, 0xc9},
1159 {0x3a1a, 0x1c},
1160 {0x3a23, 0x15},
1161 {0x3a26, 0x17},
1162 {0x3a2c, 0x50},
1163 {0x3a2f, 0x18},
1164 {0x3a32, 0x4f},
1165 {0x3ace, 0x01},
1166 {0x3ad2, 0x01},
1167 {0x3ad6, 0x01},
1168 {0x3ada, 0x01},
1169 {0x3ade, 0x01},
1170 {0x3ae2, 0x01},
1171 {0x3aee, 0x01},
1172 {0x3af2, 0x01},
1173 {0x3af6, 0x01},
1174 {0x3afa, 0x01},
1175 {0x3afe, 0x01},
1176 {0x3b02, 0x01},
1177 {0x3b06, 0x01},
1178 {0x3b0a, 0x01},
1179 {0x3b0b, 0x00},
1180 {0x3b0e, 0x01},
1181 {0x3b0f, 0x00},
1182 {0x392c, 0x02},
1183 {0x392d, 0x01},
1184 {0x392e, 0x04},
1185 {0x392f, 0x03},
1186 {0x3930, 0x09},
1187 {0x3931, 0x07},
1188 {0x3932, 0x10},
1189 {0x3933, 0x0d},
1190 {0x3609, 0x08},
1191 {0x3921, 0x0f},
1192 {0x3928, 0x15},
1193 {0x3929, 0x2a},
1194 {0x392a, 0x52},
1195 {0x392b, 0xa3},
1196 {0x340b, 0x1b},
1197 {0x3426, 0x10},
1198 {0x3407, 0x01},
1199 {0x3404, 0x01},
1200 {0x3500, 0x00},
1201 {0x3501, 0x08},
1202 {0x3502, 0x10},
1203 {0x3508, 0x04},
1204 {0x3509, 0x00},
1205 };
1206
1207 static const char * const ov08x40_test_pattern_menu[] = {
1208 "Disabled",
1209 "Vertical Color Bar Type 1",
1210 "Vertical Color Bar Type 2",
1211 "Vertical Color Bar Type 3",
1212 "Vertical Color Bar Type 4"
1213 };
1214
1215 /* Configurations for supported link frequencies */
1216 #define OV08X40_LINK_FREQ_400MHZ 400000000ULL
1217 #define OV08X40_SCLK_96MHZ 96000000ULL
1218 #define OV08X40_EXT_CLK 19200000
1219 #define OV08X40_DATA_LANES 4
1220
1221 /*
1222 * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
1223 * data rate => double data rate; number of lanes => 4; bits per pixel => 10
1224 */
link_freq_to_pixel_rate(u64 f)1225 static u64 link_freq_to_pixel_rate(u64 f)
1226 {
1227 f *= 2 * OV08X40_DATA_LANES;
1228 do_div(f, 10);
1229
1230 return f;
1231 }
1232
1233 /* Menu items for LINK_FREQ V4L2 control */
1234 static const s64 link_freq_menu_items[] = {
1235 OV08X40_LINK_FREQ_400MHZ,
1236 };
1237
1238 /* Link frequency configs */
1239 static const struct ov08x40_link_freq_config link_freq_configs[] = {
1240 [OV08X40_LINK_FREQ_400MHZ_INDEX] = {
1241 .reg_list = {
1242 .num_of_regs = ARRAY_SIZE(mipi_data_rate_800mbps),
1243 .regs = mipi_data_rate_800mbps,
1244 }
1245 },
1246 };
1247
1248 /* Mode configs */
1249 static const struct ov08x40_mode supported_modes[] = {
1250 {
1251 .width = 3856,
1252 .height = 2416,
1253 .vts_def = OV08X40_VTS_30FPS,
1254 .vts_min = OV08X40_VTS_30FPS,
1255 .llp = 0x10aa, /* in normal mode, tline time = 2 * HTS / SCLK */
1256 .lanes = 4,
1257 .reg_list = {
1258 .num_of_regs = ARRAY_SIZE(mode_3856x2416_regs),
1259 .regs = mode_3856x2416_regs,
1260 },
1261 .link_freq_index = OV08X40_LINK_FREQ_400MHZ_INDEX,
1262 .exposure_shift = 1,
1263 .exposure_margin = OV08X40_EXPOSURE_MAX_MARGIN,
1264 },
1265 {
1266 .width = 1928,
1267 .height = 1208,
1268 .vts_def = OV08X40_VTS_BIN_30FPS,
1269 .vts_min = OV08X40_VTS_BIN_30FPS,
1270 .llp = 0x960,
1271 .lanes = 4,
1272 .reg_list = {
1273 .num_of_regs = ARRAY_SIZE(mode_1928x1208_regs),
1274 .regs = mode_1928x1208_regs,
1275 },
1276 .link_freq_index = OV08X40_LINK_FREQ_400MHZ_INDEX,
1277 .exposure_shift = 0,
1278 .exposure_margin = OV08X40_EXPOSURE_BIN_MAX_MARGIN,
1279 },
1280 };
1281
1282 struct ov08x40 {
1283 struct v4l2_subdev sd;
1284 struct media_pad pad;
1285
1286 struct v4l2_ctrl_handler ctrl_handler;
1287 /* V4L2 Controls */
1288 struct v4l2_ctrl *link_freq;
1289 struct v4l2_ctrl *pixel_rate;
1290 struct v4l2_ctrl *vblank;
1291 struct v4l2_ctrl *hblank;
1292 struct v4l2_ctrl *exposure;
1293
1294 /* Current mode */
1295 const struct ov08x40_mode *cur_mode;
1296
1297 /* Mutex for serialized access */
1298 struct mutex mutex;
1299
1300 /* True if the device has been identified */
1301 bool identified;
1302 };
1303
1304 #define to_ov08x40(_sd) container_of(_sd, struct ov08x40, sd)
1305
1306 /* Read registers up to 4 at a time */
ov08x40_read_reg(struct ov08x40 * ov08x,u16 reg,u32 len,u32 * val)1307 static int ov08x40_read_reg(struct ov08x40 *ov08x,
1308 u16 reg, u32 len, u32 *val)
1309 {
1310 struct i2c_client *client = v4l2_get_subdevdata(&ov08x->sd);
1311 struct i2c_msg msgs[2];
1312 u8 *data_be_p;
1313 int ret;
1314 __be32 data_be = 0;
1315 __be16 reg_addr_be = cpu_to_be16(reg);
1316
1317 if (len > 4)
1318 return -EINVAL;
1319
1320 data_be_p = (u8 *)&data_be;
1321 /* Write register address */
1322 msgs[0].addr = client->addr;
1323 msgs[0].flags = 0;
1324 msgs[0].len = 2;
1325 msgs[0].buf = (u8 *)®_addr_be;
1326
1327 /* Read data from register */
1328 msgs[1].addr = client->addr;
1329 msgs[1].flags = I2C_M_RD;
1330 msgs[1].len = len;
1331 msgs[1].buf = &data_be_p[4 - len];
1332
1333 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
1334 if (ret != ARRAY_SIZE(msgs))
1335 return -EIO;
1336
1337 *val = be32_to_cpu(data_be);
1338
1339 return 0;
1340 }
1341
ov08x40_burst_fill_regs(struct ov08x40 * ov08x,u16 first_reg,u16 last_reg,u8 val)1342 static int ov08x40_burst_fill_regs(struct ov08x40 *ov08x, u16 first_reg,
1343 u16 last_reg, u8 val)
1344 {
1345 struct i2c_client *client = v4l2_get_subdevdata(&ov08x->sd);
1346 struct i2c_msg msgs;
1347 size_t i, num_regs;
1348 int ret;
1349
1350 num_regs = last_reg - first_reg + 1;
1351 msgs.addr = client->addr;
1352 msgs.flags = 0;
1353 msgs.len = 2 + num_regs;
1354 msgs.buf = kmalloc(msgs.len, GFP_KERNEL);
1355
1356 if (!msgs.buf)
1357 return -ENOMEM;
1358
1359 put_unaligned_be16(first_reg, msgs.buf);
1360
1361 for (i = 0; i < num_regs; ++i)
1362 msgs.buf[2 + i] = val;
1363
1364 ret = i2c_transfer(client->adapter, &msgs, 1);
1365
1366 kfree(msgs.buf);
1367
1368 if (ret != 1) {
1369 dev_err(&client->dev, "Failed regs transferred: %d\n", ret);
1370 return -EIO;
1371 }
1372
1373 return 0;
1374 }
1375
1376 /* Write registers up to 4 at a time */
ov08x40_write_reg(struct ov08x40 * ov08x,u16 reg,u32 len,u32 __val)1377 static int ov08x40_write_reg(struct ov08x40 *ov08x,
1378 u16 reg, u32 len, u32 __val)
1379 {
1380 struct i2c_client *client = v4l2_get_subdevdata(&ov08x->sd);
1381 int buf_i, val_i;
1382 u8 buf[6], *val_p;
1383 __be32 val;
1384
1385 if (len > 4)
1386 return -EINVAL;
1387
1388 buf[0] = reg >> 8;
1389 buf[1] = reg & 0xff;
1390
1391 val = cpu_to_be32(__val);
1392 val_p = (u8 *)&val;
1393 buf_i = 2;
1394 val_i = 4 - len;
1395
1396 while (val_i < 4)
1397 buf[buf_i++] = val_p[val_i++];
1398
1399 if (i2c_master_send(client, buf, len + 2) != len + 2)
1400 return -EIO;
1401
1402 return 0;
1403 }
1404
1405 /* Write a list of registers */
ov08x40_write_regs(struct ov08x40 * ov08x,const struct ov08x40_reg * regs,u32 len)1406 static int ov08x40_write_regs(struct ov08x40 *ov08x,
1407 const struct ov08x40_reg *regs, u32 len)
1408 {
1409 struct i2c_client *client = v4l2_get_subdevdata(&ov08x->sd);
1410 int ret;
1411 u32 i;
1412
1413 for (i = 0; i < len; i++) {
1414 ret = ov08x40_write_reg(ov08x, regs[i].address, 1,
1415 regs[i].val);
1416
1417 if (ret) {
1418 dev_err_ratelimited(&client->dev,
1419 "Failed to write reg 0x%4.4x. error = %d\n",
1420 regs[i].address, ret);
1421
1422 return ret;
1423 }
1424 }
1425
1426 return 0;
1427 }
1428
ov08x40_write_reg_list(struct ov08x40 * ov08x,const struct ov08x40_reg_list * r_list)1429 static int ov08x40_write_reg_list(struct ov08x40 *ov08x,
1430 const struct ov08x40_reg_list *r_list)
1431 {
1432 return ov08x40_write_regs(ov08x, r_list->regs, r_list->num_of_regs);
1433 }
1434
ov08x40_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)1435 static int ov08x40_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1436 {
1437 const struct ov08x40_mode *default_mode = &supported_modes[0];
1438 struct ov08x40 *ov08x = to_ov08x40(sd);
1439 struct v4l2_mbus_framefmt *try_fmt =
1440 v4l2_subdev_state_get_format(fh->state, 0);
1441
1442 mutex_lock(&ov08x->mutex);
1443
1444 /* Initialize try_fmt */
1445 try_fmt->width = default_mode->width;
1446 try_fmt->height = default_mode->height;
1447 try_fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
1448 try_fmt->field = V4L2_FIELD_NONE;
1449
1450 /* No crop or compose */
1451 mutex_unlock(&ov08x->mutex);
1452
1453 return 0;
1454 }
1455
ov08x40_update_digital_gain(struct ov08x40 * ov08x,u32 d_gain)1456 static int ov08x40_update_digital_gain(struct ov08x40 *ov08x, u32 d_gain)
1457 {
1458 int ret;
1459 u32 val;
1460
1461 /*
1462 * 0x350C[1:0], 0x350B[7:0], 0x350A[4:0]
1463 */
1464
1465 val = (d_gain & OV08X40_DGTL_GAIN_L_MASK) << OV08X40_DGTL_GAIN_L_SHIFT;
1466 ret = ov08x40_write_reg(ov08x, OV08X40_REG_DGTL_GAIN_L,
1467 OV08X40_REG_VALUE_08BIT, val);
1468 if (ret)
1469 return ret;
1470
1471 val = (d_gain >> OV08X40_DGTL_GAIN_M_SHIFT) & OV08X40_DGTL_GAIN_M_MASK;
1472 ret = ov08x40_write_reg(ov08x, OV08X40_REG_DGTL_GAIN_M,
1473 OV08X40_REG_VALUE_08BIT, val);
1474 if (ret)
1475 return ret;
1476
1477 val = (d_gain >> OV08X40_DGTL_GAIN_H_SHIFT) & OV08X40_DGTL_GAIN_H_MASK;
1478
1479 return ov08x40_write_reg(ov08x, OV08X40_REG_DGTL_GAIN_H,
1480 OV08X40_REG_VALUE_08BIT, val);
1481 }
1482
ov08x40_enable_test_pattern(struct ov08x40 * ov08x,u32 pattern)1483 static int ov08x40_enable_test_pattern(struct ov08x40 *ov08x, u32 pattern)
1484 {
1485 int ret;
1486 u32 val;
1487
1488 ret = ov08x40_read_reg(ov08x, OV08X40_REG_TEST_PATTERN,
1489 OV08X40_REG_VALUE_08BIT, &val);
1490 if (ret)
1491 return ret;
1492
1493 if (pattern) {
1494 ret = ov08x40_read_reg(ov08x, OV08X40_REG_ISP,
1495 OV08X40_REG_VALUE_08BIT, &val);
1496 if (ret)
1497 return ret;
1498
1499 ret = ov08x40_write_reg(ov08x, OV08X40_REG_ISP,
1500 OV08X40_REG_VALUE_08BIT,
1501 val | BIT(1));
1502 if (ret)
1503 return ret;
1504
1505 ret = ov08x40_read_reg(ov08x, OV08X40_REG_SHORT_TEST_PATTERN,
1506 OV08X40_REG_VALUE_08BIT, &val);
1507 if (ret)
1508 return ret;
1509
1510 ret = ov08x40_write_reg(ov08x, OV08X40_REG_SHORT_TEST_PATTERN,
1511 OV08X40_REG_VALUE_08BIT,
1512 val | BIT(0));
1513 if (ret)
1514 return ret;
1515
1516 ret = ov08x40_read_reg(ov08x, OV08X40_REG_TEST_PATTERN,
1517 OV08X40_REG_VALUE_08BIT, &val);
1518 if (ret)
1519 return ret;
1520
1521 val &= OV08X40_TEST_PATTERN_MASK;
1522 val |= ((pattern - 1) << OV08X40_TEST_PATTERN_BAR_SHIFT) |
1523 OV08X40_TEST_PATTERN_ENABLE;
1524 } else {
1525 val &= ~OV08X40_TEST_PATTERN_ENABLE;
1526 }
1527
1528 return ov08x40_write_reg(ov08x, OV08X40_REG_TEST_PATTERN,
1529 OV08X40_REG_VALUE_08BIT, val);
1530 }
1531
ov08x40_set_ctrl_hflip(struct ov08x40 * ov08x,u32 ctrl_val)1532 static int ov08x40_set_ctrl_hflip(struct ov08x40 *ov08x, u32 ctrl_val)
1533 {
1534 int ret;
1535 u32 val;
1536
1537 ret = ov08x40_read_reg(ov08x, OV08X40_REG_MIRROR,
1538 OV08X40_REG_VALUE_08BIT, &val);
1539 if (ret)
1540 return ret;
1541
1542 return ov08x40_write_reg(ov08x, OV08X40_REG_MIRROR,
1543 OV08X40_REG_VALUE_08BIT,
1544 ctrl_val ? val | BIT(2) : val & ~BIT(2));
1545 }
1546
ov08x40_set_ctrl_vflip(struct ov08x40 * ov08x,u32 ctrl_val)1547 static int ov08x40_set_ctrl_vflip(struct ov08x40 *ov08x, u32 ctrl_val)
1548 {
1549 int ret;
1550 u32 val;
1551
1552 ret = ov08x40_read_reg(ov08x, OV08X40_REG_VFLIP,
1553 OV08X40_REG_VALUE_08BIT, &val);
1554 if (ret)
1555 return ret;
1556
1557 return ov08x40_write_reg(ov08x, OV08X40_REG_VFLIP,
1558 OV08X40_REG_VALUE_08BIT,
1559 ctrl_val ? val | BIT(2) : val & ~BIT(2));
1560 }
1561
ov08x40_set_ctrl(struct v4l2_ctrl * ctrl)1562 static int ov08x40_set_ctrl(struct v4l2_ctrl *ctrl)
1563 {
1564 struct ov08x40 *ov08x = container_of(ctrl->handler,
1565 struct ov08x40, ctrl_handler);
1566 struct i2c_client *client = v4l2_get_subdevdata(&ov08x->sd);
1567 s64 max;
1568 int exp;
1569 int fll;
1570 int ret = 0;
1571
1572 /* Propagate change of current control to all related controls */
1573 switch (ctrl->id) {
1574 case V4L2_CID_VBLANK:
1575 /* Update max exposure while meeting expected vblanking */
1576 /*
1577 * because in normal mode, 1 HTS = 0.5 tline
1578 * fps = sclk / hts / vts
1579 * so the vts value needs to be double
1580 */
1581 max = ((ov08x->cur_mode->height + ctrl->val) <<
1582 ov08x->cur_mode->exposure_shift) -
1583 ov08x->cur_mode->exposure_margin;
1584
1585 __v4l2_ctrl_modify_range(ov08x->exposure,
1586 ov08x->exposure->minimum,
1587 max, ov08x->exposure->step, max);
1588 break;
1589 }
1590
1591 /*
1592 * Applying V4L2 control value only happens
1593 * when power is up for streaming
1594 */
1595 if (!pm_runtime_get_if_in_use(&client->dev))
1596 return 0;
1597
1598 switch (ctrl->id) {
1599 case V4L2_CID_ANALOGUE_GAIN:
1600 ret = ov08x40_write_reg(ov08x, OV08X40_REG_ANALOG_GAIN,
1601 OV08X40_REG_VALUE_16BIT,
1602 ctrl->val << 1);
1603 break;
1604 case V4L2_CID_DIGITAL_GAIN:
1605 ret = ov08x40_update_digital_gain(ov08x, ctrl->val);
1606 break;
1607 case V4L2_CID_EXPOSURE:
1608 exp = (ctrl->val << ov08x->cur_mode->exposure_shift) -
1609 ov08x->cur_mode->exposure_margin;
1610
1611 ret = ov08x40_write_reg(ov08x, OV08X40_REG_EXPOSURE,
1612 OV08X40_REG_VALUE_24BIT,
1613 exp);
1614 break;
1615 case V4L2_CID_VBLANK:
1616 fll = ((ov08x->cur_mode->height + ctrl->val) <<
1617 ov08x->cur_mode->exposure_shift);
1618
1619 ret = ov08x40_write_reg(ov08x, OV08X40_REG_VTS,
1620 OV08X40_REG_VALUE_16BIT,
1621 fll);
1622 break;
1623 case V4L2_CID_TEST_PATTERN:
1624 ret = ov08x40_enable_test_pattern(ov08x, ctrl->val);
1625 break;
1626 case V4L2_CID_HFLIP:
1627 ov08x40_set_ctrl_hflip(ov08x, ctrl->val);
1628 break;
1629 case V4L2_CID_VFLIP:
1630 ov08x40_set_ctrl_vflip(ov08x, ctrl->val);
1631 break;
1632 default:
1633 dev_info(&client->dev,
1634 "ctrl(id:0x%x,val:0x%x) is not handled\n",
1635 ctrl->id, ctrl->val);
1636 break;
1637 }
1638
1639 pm_runtime_put(&client->dev);
1640
1641 return ret;
1642 }
1643
1644 static const struct v4l2_ctrl_ops ov08x40_ctrl_ops = {
1645 .s_ctrl = ov08x40_set_ctrl,
1646 };
1647
ov08x40_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)1648 static int ov08x40_enum_mbus_code(struct v4l2_subdev *sd,
1649 struct v4l2_subdev_state *sd_state,
1650 struct v4l2_subdev_mbus_code_enum *code)
1651 {
1652 /* Only one bayer order(GRBG) is supported */
1653 if (code->index > 0)
1654 return -EINVAL;
1655
1656 code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
1657
1658 return 0;
1659 }
1660
ov08x40_enum_frame_size(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_frame_size_enum * fse)1661 static int ov08x40_enum_frame_size(struct v4l2_subdev *sd,
1662 struct v4l2_subdev_state *sd_state,
1663 struct v4l2_subdev_frame_size_enum *fse)
1664 {
1665 if (fse->index >= ARRAY_SIZE(supported_modes))
1666 return -EINVAL;
1667
1668 if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
1669 return -EINVAL;
1670
1671 fse->min_width = supported_modes[fse->index].width;
1672 fse->max_width = fse->min_width;
1673 fse->min_height = supported_modes[fse->index].height;
1674 fse->max_height = fse->min_height;
1675
1676 return 0;
1677 }
1678
ov08x40_update_pad_format(const struct ov08x40_mode * mode,struct v4l2_subdev_format * fmt)1679 static void ov08x40_update_pad_format(const struct ov08x40_mode *mode,
1680 struct v4l2_subdev_format *fmt)
1681 {
1682 fmt->format.width = mode->width;
1683 fmt->format.height = mode->height;
1684 fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
1685 fmt->format.field = V4L2_FIELD_NONE;
1686 }
1687
ov08x40_do_get_pad_format(struct ov08x40 * ov08x,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1688 static int ov08x40_do_get_pad_format(struct ov08x40 *ov08x,
1689 struct v4l2_subdev_state *sd_state,
1690 struct v4l2_subdev_format *fmt)
1691 {
1692 struct v4l2_mbus_framefmt *framefmt;
1693
1694 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1695 framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
1696 fmt->format = *framefmt;
1697 } else {
1698 ov08x40_update_pad_format(ov08x->cur_mode, fmt);
1699 }
1700
1701 return 0;
1702 }
1703
ov08x40_get_pad_format(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1704 static int ov08x40_get_pad_format(struct v4l2_subdev *sd,
1705 struct v4l2_subdev_state *sd_state,
1706 struct v4l2_subdev_format *fmt)
1707 {
1708 struct ov08x40 *ov08x = to_ov08x40(sd);
1709 int ret;
1710
1711 mutex_lock(&ov08x->mutex);
1712 ret = ov08x40_do_get_pad_format(ov08x, sd_state, fmt);
1713 mutex_unlock(&ov08x->mutex);
1714
1715 return ret;
1716 }
1717
1718 static int
ov08x40_set_pad_format(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1719 ov08x40_set_pad_format(struct v4l2_subdev *sd,
1720 struct v4l2_subdev_state *sd_state,
1721 struct v4l2_subdev_format *fmt)
1722 {
1723 struct ov08x40 *ov08x = to_ov08x40(sd);
1724 const struct ov08x40_mode *mode;
1725 struct v4l2_mbus_framefmt *framefmt;
1726 s32 vblank_def;
1727 s32 vblank_min;
1728 s64 h_blank;
1729 s64 pixel_rate;
1730 s64 link_freq;
1731 u64 steps;
1732
1733 mutex_lock(&ov08x->mutex);
1734
1735 /* Only one raw bayer(GRBG) order is supported */
1736 if (fmt->format.code != MEDIA_BUS_FMT_SGRBG10_1X10)
1737 fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
1738
1739 mode = v4l2_find_nearest_size(supported_modes,
1740 ARRAY_SIZE(supported_modes),
1741 width, height,
1742 fmt->format.width, fmt->format.height);
1743 ov08x40_update_pad_format(mode, fmt);
1744 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1745 framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
1746 *framefmt = fmt->format;
1747 } else {
1748 ov08x->cur_mode = mode;
1749 __v4l2_ctrl_s_ctrl(ov08x->link_freq, mode->link_freq_index);
1750 link_freq = link_freq_menu_items[mode->link_freq_index];
1751 pixel_rate = link_freq_to_pixel_rate(link_freq);
1752 __v4l2_ctrl_s_ctrl_int64(ov08x->pixel_rate, pixel_rate);
1753
1754 /* Update limits and set FPS to default */
1755 vblank_def = ov08x->cur_mode->vts_def -
1756 ov08x->cur_mode->height;
1757 vblank_min = ov08x->cur_mode->vts_min -
1758 ov08x->cur_mode->height;
1759
1760 /*
1761 * The frame length line should be aligned to a multiple of 4,
1762 * as provided by the sensor vendor, in normal mode.
1763 */
1764 steps = mode->exposure_shift == 1 ? 4 : 1;
1765
1766 __v4l2_ctrl_modify_range(ov08x->vblank, vblank_min,
1767 OV08X40_VTS_MAX
1768 - ov08x->cur_mode->height,
1769 steps,
1770 vblank_def);
1771 __v4l2_ctrl_s_ctrl(ov08x->vblank, vblank_def);
1772
1773 h_blank = ov08x->cur_mode->llp - ov08x->cur_mode->width;
1774
1775 __v4l2_ctrl_modify_range(ov08x->hblank, h_blank,
1776 h_blank, 1, h_blank);
1777 }
1778
1779 mutex_unlock(&ov08x->mutex);
1780
1781 return 0;
1782 }
1783
ov08x40_start_streaming(struct ov08x40 * ov08x)1784 static int ov08x40_start_streaming(struct ov08x40 *ov08x)
1785 {
1786 struct i2c_client *client = v4l2_get_subdevdata(&ov08x->sd);
1787 const struct ov08x40_reg_list *reg_list;
1788 int ret, link_freq_index;
1789
1790 /* Get out of from software reset */
1791 ret = ov08x40_write_reg(ov08x, OV08X40_REG_SOFTWARE_RST,
1792 OV08X40_REG_VALUE_08BIT, OV08X40_SOFTWARE_RST);
1793 if (ret) {
1794 dev_err(&client->dev, "%s failed to set powerup registers\n",
1795 __func__);
1796 return ret;
1797 }
1798
1799 link_freq_index = ov08x->cur_mode->link_freq_index;
1800 reg_list = &link_freq_configs[link_freq_index].reg_list;
1801
1802 ret = ov08x40_write_reg_list(ov08x, reg_list);
1803 if (ret) {
1804 dev_err(&client->dev, "%s failed to set plls\n", __func__);
1805 return ret;
1806 }
1807
1808 /* Apply default values of current mode */
1809 reg_list = &ov08x->cur_mode->reg_list;
1810 ret = ov08x40_write_reg_list(ov08x, reg_list);
1811 if (ret) {
1812 dev_err(&client->dev, "%s failed to set mode\n", __func__);
1813 return ret;
1814 }
1815
1816 /* Use i2c burst to write register on full size registers */
1817 if (ov08x->cur_mode->exposure_shift == 1) {
1818 ret = ov08x40_burst_fill_regs(ov08x, OV08X40_REG_XTALK_FIRST_A,
1819 OV08X40_REG_XTALK_LAST_A, 0x75);
1820 if (ret == 0)
1821 ret = ov08x40_burst_fill_regs(ov08x,
1822 OV08X40_REG_XTALK_FIRST_B,
1823 OV08X40_REG_XTALK_LAST_B,
1824 0x75);
1825 }
1826
1827 if (ret) {
1828 dev_err(&client->dev, "%s failed to set regs\n", __func__);
1829 return ret;
1830 }
1831
1832 /* Apply customized values from user */
1833 ret = __v4l2_ctrl_handler_setup(ov08x->sd.ctrl_handler);
1834 if (ret)
1835 return ret;
1836
1837 return ov08x40_write_reg(ov08x, OV08X40_REG_MODE_SELECT,
1838 OV08X40_REG_VALUE_08BIT,
1839 OV08X40_MODE_STREAMING);
1840 }
1841
1842 /* Stop streaming */
ov08x40_stop_streaming(struct ov08x40 * ov08x)1843 static int ov08x40_stop_streaming(struct ov08x40 *ov08x)
1844 {
1845 return ov08x40_write_reg(ov08x, OV08X40_REG_MODE_SELECT,
1846 OV08X40_REG_VALUE_08BIT, OV08X40_MODE_STANDBY);
1847 }
1848
ov08x40_set_stream(struct v4l2_subdev * sd,int enable)1849 static int ov08x40_set_stream(struct v4l2_subdev *sd, int enable)
1850 {
1851 struct ov08x40 *ov08x = to_ov08x40(sd);
1852 struct i2c_client *client = v4l2_get_subdevdata(sd);
1853 int ret = 0;
1854
1855 mutex_lock(&ov08x->mutex);
1856
1857 if (enable) {
1858 ret = pm_runtime_resume_and_get(&client->dev);
1859 if (ret < 0)
1860 goto err_unlock;
1861
1862 /*
1863 * Apply default & customized values
1864 * and then start streaming.
1865 */
1866 ret = ov08x40_start_streaming(ov08x);
1867 if (ret)
1868 goto err_rpm_put;
1869 } else {
1870 ov08x40_stop_streaming(ov08x);
1871 pm_runtime_put(&client->dev);
1872 }
1873
1874 mutex_unlock(&ov08x->mutex);
1875
1876 return ret;
1877
1878 err_rpm_put:
1879 pm_runtime_put(&client->dev);
1880 err_unlock:
1881 mutex_unlock(&ov08x->mutex);
1882
1883 return ret;
1884 }
1885
1886 /* Verify chip ID */
ov08x40_identify_module(struct ov08x40 * ov08x)1887 static int ov08x40_identify_module(struct ov08x40 *ov08x)
1888 {
1889 struct i2c_client *client = v4l2_get_subdevdata(&ov08x->sd);
1890 int ret;
1891 u32 val;
1892
1893 if (ov08x->identified)
1894 return 0;
1895
1896 ret = ov08x40_read_reg(ov08x, OV08X40_REG_CHIP_ID,
1897 OV08X40_REG_VALUE_24BIT, &val);
1898 if (ret)
1899 return ret;
1900
1901 if (val != OV08X40_CHIP_ID) {
1902 dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
1903 OV08X40_CHIP_ID, val);
1904 return -ENXIO;
1905 }
1906
1907 ov08x->identified = true;
1908
1909 return 0;
1910 }
1911
1912 static const struct v4l2_subdev_video_ops ov08x40_video_ops = {
1913 .s_stream = ov08x40_set_stream,
1914 };
1915
1916 static const struct v4l2_subdev_pad_ops ov08x40_pad_ops = {
1917 .enum_mbus_code = ov08x40_enum_mbus_code,
1918 .get_fmt = ov08x40_get_pad_format,
1919 .set_fmt = ov08x40_set_pad_format,
1920 .enum_frame_size = ov08x40_enum_frame_size,
1921 };
1922
1923 static const struct v4l2_subdev_ops ov08x40_subdev_ops = {
1924 .video = &ov08x40_video_ops,
1925 .pad = &ov08x40_pad_ops,
1926 };
1927
1928 static const struct media_entity_operations ov08x40_subdev_entity_ops = {
1929 .link_validate = v4l2_subdev_link_validate,
1930 };
1931
1932 static const struct v4l2_subdev_internal_ops ov08x40_internal_ops = {
1933 .open = ov08x40_open,
1934 };
1935
ov08x40_init_controls(struct ov08x40 * ov08x)1936 static int ov08x40_init_controls(struct ov08x40 *ov08x)
1937 {
1938 struct i2c_client *client = v4l2_get_subdevdata(&ov08x->sd);
1939 struct v4l2_fwnode_device_properties props;
1940 struct v4l2_ctrl_handler *ctrl_hdlr;
1941 s64 exposure_max;
1942 s64 vblank_def;
1943 s64 vblank_min;
1944 s64 hblank;
1945 s64 pixel_rate_min;
1946 s64 pixel_rate_max;
1947 const struct ov08x40_mode *mode;
1948 u32 max;
1949 int ret;
1950
1951 ctrl_hdlr = &ov08x->ctrl_handler;
1952 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10);
1953 if (ret)
1954 return ret;
1955
1956 mutex_init(&ov08x->mutex);
1957 ctrl_hdlr->lock = &ov08x->mutex;
1958 max = ARRAY_SIZE(link_freq_menu_items) - 1;
1959 ov08x->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
1960 &ov08x40_ctrl_ops,
1961 V4L2_CID_LINK_FREQ,
1962 max,
1963 0,
1964 link_freq_menu_items);
1965 if (ov08x->link_freq)
1966 ov08x->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1967
1968 pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]);
1969 pixel_rate_min = 0;
1970 /* By default, PIXEL_RATE is read only */
1971 ov08x->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov08x40_ctrl_ops,
1972 V4L2_CID_PIXEL_RATE,
1973 pixel_rate_min, pixel_rate_max,
1974 1, pixel_rate_max);
1975
1976 mode = ov08x->cur_mode;
1977 vblank_def = mode->vts_def - mode->height;
1978 vblank_min = mode->vts_min - mode->height;
1979 ov08x->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov08x40_ctrl_ops,
1980 V4L2_CID_VBLANK,
1981 vblank_min,
1982 OV08X40_VTS_MAX - mode->height, 1,
1983 vblank_def);
1984
1985 hblank = ov08x->cur_mode->llp - ov08x->cur_mode->width;
1986
1987 ov08x->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov08x40_ctrl_ops,
1988 V4L2_CID_HBLANK,
1989 hblank, hblank, 1, hblank);
1990 if (ov08x->hblank)
1991 ov08x->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1992
1993 exposure_max = mode->vts_def - OV08X40_EXPOSURE_MAX_MARGIN;
1994 ov08x->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov08x40_ctrl_ops,
1995 V4L2_CID_EXPOSURE,
1996 OV08X40_EXPOSURE_MIN,
1997 exposure_max, OV08X40_EXPOSURE_STEP,
1998 exposure_max);
1999
2000 v4l2_ctrl_new_std(ctrl_hdlr, &ov08x40_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
2001 OV08X40_ANA_GAIN_MIN, OV08X40_ANA_GAIN_MAX,
2002 OV08X40_ANA_GAIN_STEP, OV08X40_ANA_GAIN_DEFAULT);
2003
2004 /* Digital gain */
2005 v4l2_ctrl_new_std(ctrl_hdlr, &ov08x40_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
2006 OV08X40_DGTL_GAIN_MIN, OV08X40_DGTL_GAIN_MAX,
2007 OV08X40_DGTL_GAIN_STEP, OV08X40_DGTL_GAIN_DEFAULT);
2008
2009 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov08x40_ctrl_ops,
2010 V4L2_CID_TEST_PATTERN,
2011 ARRAY_SIZE(ov08x40_test_pattern_menu) - 1,
2012 0, 0, ov08x40_test_pattern_menu);
2013
2014 v4l2_ctrl_new_std(ctrl_hdlr, &ov08x40_ctrl_ops,
2015 V4L2_CID_HFLIP, 0, 1, 1, 0);
2016 v4l2_ctrl_new_std(ctrl_hdlr, &ov08x40_ctrl_ops,
2017 V4L2_CID_VFLIP, 0, 1, 1, 0);
2018
2019 if (ctrl_hdlr->error) {
2020 ret = ctrl_hdlr->error;
2021 dev_err(&client->dev, "%s control init failed (%d)\n",
2022 __func__, ret);
2023 goto error;
2024 }
2025
2026 ret = v4l2_fwnode_device_parse(&client->dev, &props);
2027 if (ret)
2028 goto error;
2029
2030 ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &ov08x40_ctrl_ops,
2031 &props);
2032 if (ret)
2033 goto error;
2034
2035 ov08x->sd.ctrl_handler = ctrl_hdlr;
2036
2037 return 0;
2038
2039 error:
2040 v4l2_ctrl_handler_free(ctrl_hdlr);
2041 mutex_destroy(&ov08x->mutex);
2042
2043 return ret;
2044 }
2045
ov08x40_free_controls(struct ov08x40 * ov08x)2046 static void ov08x40_free_controls(struct ov08x40 *ov08x)
2047 {
2048 v4l2_ctrl_handler_free(ov08x->sd.ctrl_handler);
2049 mutex_destroy(&ov08x->mutex);
2050 }
2051
ov08x40_check_hwcfg(struct device * dev)2052 static int ov08x40_check_hwcfg(struct device *dev)
2053 {
2054 struct v4l2_fwnode_endpoint bus_cfg = {
2055 .bus_type = V4L2_MBUS_CSI2_DPHY
2056 };
2057 struct fwnode_handle *ep;
2058 struct fwnode_handle *fwnode = dev_fwnode(dev);
2059 unsigned int i, j;
2060 int ret;
2061 u32 ext_clk;
2062
2063 if (!fwnode)
2064 return -ENXIO;
2065
2066 ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
2067 &ext_clk);
2068 if (ret) {
2069 dev_err(dev, "can't get clock frequency");
2070 return ret;
2071 }
2072
2073 if (ext_clk != OV08X40_EXT_CLK) {
2074 dev_err(dev, "external clock %d is not supported",
2075 ext_clk);
2076 return -EINVAL;
2077 }
2078
2079 ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
2080 if (!ep)
2081 return -ENXIO;
2082
2083 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
2084 fwnode_handle_put(ep);
2085 if (ret)
2086 return ret;
2087
2088 if (bus_cfg.bus.mipi_csi2.num_data_lanes != OV08X40_DATA_LANES) {
2089 dev_err(dev, "number of CSI2 data lanes %d is not supported",
2090 bus_cfg.bus.mipi_csi2.num_data_lanes);
2091 ret = -EINVAL;
2092 goto out_err;
2093 }
2094
2095 if (!bus_cfg.nr_of_link_frequencies) {
2096 dev_err(dev, "no link frequencies defined");
2097 ret = -EINVAL;
2098 goto out_err;
2099 }
2100
2101 for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); i++) {
2102 for (j = 0; j < bus_cfg.nr_of_link_frequencies; j++) {
2103 if (link_freq_menu_items[i] ==
2104 bus_cfg.link_frequencies[j])
2105 break;
2106 }
2107
2108 if (j == bus_cfg.nr_of_link_frequencies) {
2109 dev_err(dev, "no link frequency %lld supported",
2110 link_freq_menu_items[i]);
2111 ret = -EINVAL;
2112 goto out_err;
2113 }
2114 }
2115
2116 out_err:
2117 v4l2_fwnode_endpoint_free(&bus_cfg);
2118
2119 return ret;
2120 }
2121
ov08x40_probe(struct i2c_client * client)2122 static int ov08x40_probe(struct i2c_client *client)
2123 {
2124 struct ov08x40 *ov08x;
2125 int ret;
2126 bool full_power;
2127
2128 /* Check HW config */
2129 ret = ov08x40_check_hwcfg(&client->dev);
2130 if (ret) {
2131 dev_err(&client->dev, "failed to check hwcfg: %d", ret);
2132 return ret;
2133 }
2134
2135 ov08x = devm_kzalloc(&client->dev, sizeof(*ov08x), GFP_KERNEL);
2136 if (!ov08x)
2137 return -ENOMEM;
2138
2139 /* Initialize subdev */
2140 v4l2_i2c_subdev_init(&ov08x->sd, client, &ov08x40_subdev_ops);
2141
2142 full_power = acpi_dev_state_d0(&client->dev);
2143 if (full_power) {
2144 /* Check module identity */
2145 ret = ov08x40_identify_module(ov08x);
2146 if (ret) {
2147 dev_err(&client->dev, "failed to find sensor: %d\n", ret);
2148 return ret;
2149 }
2150 }
2151
2152 /* Set default mode to max resolution */
2153 ov08x->cur_mode = &supported_modes[0];
2154
2155 ret = ov08x40_init_controls(ov08x);
2156 if (ret)
2157 return ret;
2158
2159 /* Initialize subdev */
2160 ov08x->sd.internal_ops = &ov08x40_internal_ops;
2161 ov08x->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2162 ov08x->sd.entity.ops = &ov08x40_subdev_entity_ops;
2163 ov08x->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
2164
2165 /* Initialize source pad */
2166 ov08x->pad.flags = MEDIA_PAD_FL_SOURCE;
2167 ret = media_entity_pads_init(&ov08x->sd.entity, 1, &ov08x->pad);
2168 if (ret) {
2169 dev_err(&client->dev, "%s failed:%d\n", __func__, ret);
2170 goto error_handler_free;
2171 }
2172
2173 ret = v4l2_async_register_subdev_sensor(&ov08x->sd);
2174 if (ret < 0)
2175 goto error_media_entity;
2176
2177 if (full_power)
2178 pm_runtime_set_active(&client->dev);
2179 pm_runtime_enable(&client->dev);
2180 pm_runtime_idle(&client->dev);
2181
2182 return 0;
2183
2184 error_media_entity:
2185 media_entity_cleanup(&ov08x->sd.entity);
2186
2187 error_handler_free:
2188 ov08x40_free_controls(ov08x);
2189
2190 return ret;
2191 }
2192
ov08x40_remove(struct i2c_client * client)2193 static void ov08x40_remove(struct i2c_client *client)
2194 {
2195 struct v4l2_subdev *sd = i2c_get_clientdata(client);
2196 struct ov08x40 *ov08x = to_ov08x40(sd);
2197
2198 v4l2_async_unregister_subdev(sd);
2199 media_entity_cleanup(&sd->entity);
2200 ov08x40_free_controls(ov08x);
2201
2202 pm_runtime_disable(&client->dev);
2203 pm_runtime_set_suspended(&client->dev);
2204 }
2205
2206 #ifdef CONFIG_ACPI
2207 static const struct acpi_device_id ov08x40_acpi_ids[] = {
2208 {"OVTI08F4"},
2209 { /* sentinel */ }
2210 };
2211
2212 MODULE_DEVICE_TABLE(acpi, ov08x40_acpi_ids);
2213 #endif
2214
2215 static struct i2c_driver ov08x40_i2c_driver = {
2216 .driver = {
2217 .name = "ov08x40",
2218 .acpi_match_table = ACPI_PTR(ov08x40_acpi_ids),
2219 },
2220 .probe = ov08x40_probe,
2221 .remove = ov08x40_remove,
2222 .flags = I2C_DRV_ACPI_WAIVE_D0_PROBE,
2223 };
2224
2225 module_i2c_driver(ov08x40_i2c_driver);
2226
2227 MODULE_AUTHOR("Jason Chen <jason.z.chen@intel.com>");
2228 MODULE_AUTHOR("Qingwu Zhang <qingwu.zhang@intel.com>");
2229 MODULE_AUTHOR("Shawn Tu");
2230 MODULE_DESCRIPTION("OmniVision OV08X40 sensor driver");
2231 MODULE_LICENSE("GPL");
2232