1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2018 Intel Corporation
3
4 #include <linux/acpi.h>
5 #include <linux/clk.h>
6 #include <linux/delay.h>
7 #include <linux/i2c.h>
8 #include <linux/module.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 #include <asm/unaligned.h>
14
15 #define IMX258_REG_VALUE_08BIT 1
16 #define IMX258_REG_VALUE_16BIT 2
17
18 #define IMX258_REG_MODE_SELECT 0x0100
19 #define IMX258_MODE_STANDBY 0x00
20 #define IMX258_MODE_STREAMING 0x01
21
22 /* Chip ID */
23 #define IMX258_REG_CHIP_ID 0x0016
24 #define IMX258_CHIP_ID 0x0258
25
26 /* V_TIMING internal */
27 #define IMX258_VTS_30FPS 0x0c50
28 #define IMX258_VTS_30FPS_2K 0x0638
29 #define IMX258_VTS_30FPS_VGA 0x034c
30 #define IMX258_VTS_MAX 0xffff
31
32 /*Frame Length Line*/
33 #define IMX258_FLL_MIN 0x08a6
34 #define IMX258_FLL_MAX 0xffff
35 #define IMX258_FLL_STEP 1
36 #define IMX258_FLL_DEFAULT 0x0c98
37
38 /* HBLANK control - read only */
39 #define IMX258_PPL_DEFAULT 5352
40
41 /* Exposure control */
42 #define IMX258_REG_EXPOSURE 0x0202
43 #define IMX258_EXPOSURE_MIN 4
44 #define IMX258_EXPOSURE_STEP 1
45 #define IMX258_EXPOSURE_DEFAULT 0x640
46 #define IMX258_EXPOSURE_MAX 65535
47
48 /* Analog gain control */
49 #define IMX258_REG_ANALOG_GAIN 0x0204
50 #define IMX258_ANA_GAIN_MIN 0
51 #define IMX258_ANA_GAIN_MAX 480
52 #define IMX258_ANA_GAIN_STEP 1
53 #define IMX258_ANA_GAIN_DEFAULT 0x0
54
55 /* Digital gain control */
56 #define IMX258_REG_GR_DIGITAL_GAIN 0x020e
57 #define IMX258_REG_R_DIGITAL_GAIN 0x0210
58 #define IMX258_REG_B_DIGITAL_GAIN 0x0212
59 #define IMX258_REG_GB_DIGITAL_GAIN 0x0214
60 #define IMX258_DGTL_GAIN_MIN 0
61 #define IMX258_DGTL_GAIN_MAX 4096 /* Max = 0xFFF */
62 #define IMX258_DGTL_GAIN_DEFAULT 1024
63 #define IMX258_DGTL_GAIN_STEP 1
64
65 /* HDR control */
66 #define IMX258_REG_HDR 0x0220
67 #define IMX258_HDR_ON BIT(0)
68 #define IMX258_REG_HDR_RATIO 0x0222
69 #define IMX258_HDR_RATIO_MIN 0
70 #define IMX258_HDR_RATIO_MAX 5
71 #define IMX258_HDR_RATIO_STEP 1
72 #define IMX258_HDR_RATIO_DEFAULT 0x0
73
74 /* Test Pattern Control */
75 #define IMX258_REG_TEST_PATTERN 0x0600
76
77 /* Orientation */
78 #define REG_MIRROR_FLIP_CONTROL 0x0101
79 #define REG_CONFIG_MIRROR_FLIP 0x03
80 #define REG_CONFIG_FLIP_TEST_PATTERN 0x02
81
82 /* Input clock frequency in Hz */
83 #define IMX258_INPUT_CLOCK_FREQ 19200000
84
85 struct imx258_reg {
86 u16 address;
87 u8 val;
88 };
89
90 struct imx258_reg_list {
91 u32 num_of_regs;
92 const struct imx258_reg *regs;
93 };
94
95 /* Link frequency config */
96 struct imx258_link_freq_config {
97 u32 pixels_per_line;
98
99 /* PLL registers for this link frequency */
100 struct imx258_reg_list reg_list;
101 };
102
103 /* Mode : resolution and related config&values */
104 struct imx258_mode {
105 /* Frame width */
106 u32 width;
107 /* Frame height */
108 u32 height;
109
110 /* V-timing */
111 u32 vts_def;
112 u32 vts_min;
113
114 /* Index of Link frequency config to be used */
115 u32 link_freq_index;
116 /* Default register values */
117 struct imx258_reg_list reg_list;
118 };
119
120 /* 4208x3118 needs 1267Mbps/lane, 4 lanes */
121 static const struct imx258_reg mipi_data_rate_1267mbps[] = {
122 { 0x0301, 0x05 },
123 { 0x0303, 0x02 },
124 { 0x0305, 0x03 },
125 { 0x0306, 0x00 },
126 { 0x0307, 0xC6 },
127 { 0x0309, 0x0A },
128 { 0x030B, 0x01 },
129 { 0x030D, 0x02 },
130 { 0x030E, 0x00 },
131 { 0x030F, 0xD8 },
132 { 0x0310, 0x00 },
133 { 0x0820, 0x13 },
134 { 0x0821, 0x4C },
135 { 0x0822, 0xCC },
136 { 0x0823, 0xCC },
137 };
138
139 static const struct imx258_reg mipi_data_rate_640mbps[] = {
140 { 0x0301, 0x05 },
141 { 0x0303, 0x02 },
142 { 0x0305, 0x03 },
143 { 0x0306, 0x00 },
144 { 0x0307, 0x64 },
145 { 0x0309, 0x0A },
146 { 0x030B, 0x01 },
147 { 0x030D, 0x02 },
148 { 0x030E, 0x00 },
149 { 0x030F, 0xD8 },
150 { 0x0310, 0x00 },
151 { 0x0820, 0x0A },
152 { 0x0821, 0x00 },
153 { 0x0822, 0x00 },
154 { 0x0823, 0x00 },
155 };
156
157 static const struct imx258_reg mode_4208x3118_regs[] = {
158 { 0x0136, 0x13 },
159 { 0x0137, 0x33 },
160 { 0x3051, 0x00 },
161 { 0x3052, 0x00 },
162 { 0x4E21, 0x14 },
163 { 0x6B11, 0xCF },
164 { 0x7FF0, 0x08 },
165 { 0x7FF1, 0x0F },
166 { 0x7FF2, 0x08 },
167 { 0x7FF3, 0x1B },
168 { 0x7FF4, 0x23 },
169 { 0x7FF5, 0x60 },
170 { 0x7FF6, 0x00 },
171 { 0x7FF7, 0x01 },
172 { 0x7FF8, 0x00 },
173 { 0x7FF9, 0x78 },
174 { 0x7FFA, 0x00 },
175 { 0x7FFB, 0x00 },
176 { 0x7FFC, 0x00 },
177 { 0x7FFD, 0x00 },
178 { 0x7FFE, 0x00 },
179 { 0x7FFF, 0x03 },
180 { 0x7F76, 0x03 },
181 { 0x7F77, 0xFE },
182 { 0x7FA8, 0x03 },
183 { 0x7FA9, 0xFE },
184 { 0x7B24, 0x81 },
185 { 0x7B25, 0x00 },
186 { 0x6564, 0x07 },
187 { 0x6B0D, 0x41 },
188 { 0x653D, 0x04 },
189 { 0x6B05, 0x8C },
190 { 0x6B06, 0xF9 },
191 { 0x6B08, 0x65 },
192 { 0x6B09, 0xFC },
193 { 0x6B0A, 0xCF },
194 { 0x6B0B, 0xD2 },
195 { 0x6700, 0x0E },
196 { 0x6707, 0x0E },
197 { 0x9104, 0x00 },
198 { 0x4648, 0x7F },
199 { 0x7420, 0x00 },
200 { 0x7421, 0x1C },
201 { 0x7422, 0x00 },
202 { 0x7423, 0xD7 },
203 { 0x5F04, 0x00 },
204 { 0x5F05, 0xED },
205 { 0x0112, 0x0A },
206 { 0x0113, 0x0A },
207 { 0x0114, 0x03 },
208 { 0x0342, 0x14 },
209 { 0x0343, 0xE8 },
210 { 0x0340, 0x0C },
211 { 0x0341, 0x50 },
212 { 0x0344, 0x00 },
213 { 0x0345, 0x00 },
214 { 0x0346, 0x00 },
215 { 0x0347, 0x00 },
216 { 0x0348, 0x10 },
217 { 0x0349, 0x6F },
218 { 0x034A, 0x0C },
219 { 0x034B, 0x2E },
220 { 0x0381, 0x01 },
221 { 0x0383, 0x01 },
222 { 0x0385, 0x01 },
223 { 0x0387, 0x01 },
224 { 0x0900, 0x00 },
225 { 0x0901, 0x11 },
226 { 0x0401, 0x00 },
227 { 0x0404, 0x00 },
228 { 0x0405, 0x10 },
229 { 0x0408, 0x00 },
230 { 0x0409, 0x00 },
231 { 0x040A, 0x00 },
232 { 0x040B, 0x00 },
233 { 0x040C, 0x10 },
234 { 0x040D, 0x70 },
235 { 0x040E, 0x0C },
236 { 0x040F, 0x30 },
237 { 0x3038, 0x00 },
238 { 0x303A, 0x00 },
239 { 0x303B, 0x10 },
240 { 0x300D, 0x00 },
241 { 0x034C, 0x10 },
242 { 0x034D, 0x70 },
243 { 0x034E, 0x0C },
244 { 0x034F, 0x30 },
245 { 0x0350, 0x01 },
246 { 0x0202, 0x0C },
247 { 0x0203, 0x46 },
248 { 0x0204, 0x00 },
249 { 0x0205, 0x00 },
250 { 0x020E, 0x01 },
251 { 0x020F, 0x00 },
252 { 0x0210, 0x01 },
253 { 0x0211, 0x00 },
254 { 0x0212, 0x01 },
255 { 0x0213, 0x00 },
256 { 0x0214, 0x01 },
257 { 0x0215, 0x00 },
258 { 0x7BCD, 0x00 },
259 { 0x94DC, 0x20 },
260 { 0x94DD, 0x20 },
261 { 0x94DE, 0x20 },
262 { 0x95DC, 0x20 },
263 { 0x95DD, 0x20 },
264 { 0x95DE, 0x20 },
265 { 0x7FB0, 0x00 },
266 { 0x9010, 0x3E },
267 { 0x9419, 0x50 },
268 { 0x941B, 0x50 },
269 { 0x9519, 0x50 },
270 { 0x951B, 0x50 },
271 { 0x3030, 0x00 },
272 { 0x3032, 0x00 },
273 { 0x0220, 0x00 },
274 };
275
276 static const struct imx258_reg mode_2104_1560_regs[] = {
277 { 0x0136, 0x13 },
278 { 0x0137, 0x33 },
279 { 0x3051, 0x00 },
280 { 0x3052, 0x00 },
281 { 0x4E21, 0x14 },
282 { 0x6B11, 0xCF },
283 { 0x7FF0, 0x08 },
284 { 0x7FF1, 0x0F },
285 { 0x7FF2, 0x08 },
286 { 0x7FF3, 0x1B },
287 { 0x7FF4, 0x23 },
288 { 0x7FF5, 0x60 },
289 { 0x7FF6, 0x00 },
290 { 0x7FF7, 0x01 },
291 { 0x7FF8, 0x00 },
292 { 0x7FF9, 0x78 },
293 { 0x7FFA, 0x00 },
294 { 0x7FFB, 0x00 },
295 { 0x7FFC, 0x00 },
296 { 0x7FFD, 0x00 },
297 { 0x7FFE, 0x00 },
298 { 0x7FFF, 0x03 },
299 { 0x7F76, 0x03 },
300 { 0x7F77, 0xFE },
301 { 0x7FA8, 0x03 },
302 { 0x7FA9, 0xFE },
303 { 0x7B24, 0x81 },
304 { 0x7B25, 0x00 },
305 { 0x6564, 0x07 },
306 { 0x6B0D, 0x41 },
307 { 0x653D, 0x04 },
308 { 0x6B05, 0x8C },
309 { 0x6B06, 0xF9 },
310 { 0x6B08, 0x65 },
311 { 0x6B09, 0xFC },
312 { 0x6B0A, 0xCF },
313 { 0x6B0B, 0xD2 },
314 { 0x6700, 0x0E },
315 { 0x6707, 0x0E },
316 { 0x9104, 0x00 },
317 { 0x4648, 0x7F },
318 { 0x7420, 0x00 },
319 { 0x7421, 0x1C },
320 { 0x7422, 0x00 },
321 { 0x7423, 0xD7 },
322 { 0x5F04, 0x00 },
323 { 0x5F05, 0xED },
324 { 0x0112, 0x0A },
325 { 0x0113, 0x0A },
326 { 0x0114, 0x03 },
327 { 0x0342, 0x14 },
328 { 0x0343, 0xE8 },
329 { 0x0340, 0x06 },
330 { 0x0341, 0x38 },
331 { 0x0344, 0x00 },
332 { 0x0345, 0x00 },
333 { 0x0346, 0x00 },
334 { 0x0347, 0x00 },
335 { 0x0348, 0x10 },
336 { 0x0349, 0x6F },
337 { 0x034A, 0x0C },
338 { 0x034B, 0x2E },
339 { 0x0381, 0x01 },
340 { 0x0383, 0x01 },
341 { 0x0385, 0x01 },
342 { 0x0387, 0x01 },
343 { 0x0900, 0x01 },
344 { 0x0901, 0x12 },
345 { 0x0401, 0x01 },
346 { 0x0404, 0x00 },
347 { 0x0405, 0x20 },
348 { 0x0408, 0x00 },
349 { 0x0409, 0x02 },
350 { 0x040A, 0x00 },
351 { 0x040B, 0x00 },
352 { 0x040C, 0x10 },
353 { 0x040D, 0x6A },
354 { 0x040E, 0x06 },
355 { 0x040F, 0x18 },
356 { 0x3038, 0x00 },
357 { 0x303A, 0x00 },
358 { 0x303B, 0x10 },
359 { 0x300D, 0x00 },
360 { 0x034C, 0x08 },
361 { 0x034D, 0x38 },
362 { 0x034E, 0x06 },
363 { 0x034F, 0x18 },
364 { 0x0350, 0x01 },
365 { 0x0202, 0x06 },
366 { 0x0203, 0x2E },
367 { 0x0204, 0x00 },
368 { 0x0205, 0x00 },
369 { 0x020E, 0x01 },
370 { 0x020F, 0x00 },
371 { 0x0210, 0x01 },
372 { 0x0211, 0x00 },
373 { 0x0212, 0x01 },
374 { 0x0213, 0x00 },
375 { 0x0214, 0x01 },
376 { 0x0215, 0x00 },
377 { 0x7BCD, 0x01 },
378 { 0x94DC, 0x20 },
379 { 0x94DD, 0x20 },
380 { 0x94DE, 0x20 },
381 { 0x95DC, 0x20 },
382 { 0x95DD, 0x20 },
383 { 0x95DE, 0x20 },
384 { 0x7FB0, 0x00 },
385 { 0x9010, 0x3E },
386 { 0x9419, 0x50 },
387 { 0x941B, 0x50 },
388 { 0x9519, 0x50 },
389 { 0x951B, 0x50 },
390 { 0x3030, 0x00 },
391 { 0x3032, 0x00 },
392 { 0x0220, 0x00 },
393 };
394
395 static const struct imx258_reg mode_1048_780_regs[] = {
396 { 0x0136, 0x13 },
397 { 0x0137, 0x33 },
398 { 0x3051, 0x00 },
399 { 0x3052, 0x00 },
400 { 0x4E21, 0x14 },
401 { 0x6B11, 0xCF },
402 { 0x7FF0, 0x08 },
403 { 0x7FF1, 0x0F },
404 { 0x7FF2, 0x08 },
405 { 0x7FF3, 0x1B },
406 { 0x7FF4, 0x23 },
407 { 0x7FF5, 0x60 },
408 { 0x7FF6, 0x00 },
409 { 0x7FF7, 0x01 },
410 { 0x7FF8, 0x00 },
411 { 0x7FF9, 0x78 },
412 { 0x7FFA, 0x00 },
413 { 0x7FFB, 0x00 },
414 { 0x7FFC, 0x00 },
415 { 0x7FFD, 0x00 },
416 { 0x7FFE, 0x00 },
417 { 0x7FFF, 0x03 },
418 { 0x7F76, 0x03 },
419 { 0x7F77, 0xFE },
420 { 0x7FA8, 0x03 },
421 { 0x7FA9, 0xFE },
422 { 0x7B24, 0x81 },
423 { 0x7B25, 0x00 },
424 { 0x6564, 0x07 },
425 { 0x6B0D, 0x41 },
426 { 0x653D, 0x04 },
427 { 0x6B05, 0x8C },
428 { 0x6B06, 0xF9 },
429 { 0x6B08, 0x65 },
430 { 0x6B09, 0xFC },
431 { 0x6B0A, 0xCF },
432 { 0x6B0B, 0xD2 },
433 { 0x6700, 0x0E },
434 { 0x6707, 0x0E },
435 { 0x9104, 0x00 },
436 { 0x4648, 0x7F },
437 { 0x7420, 0x00 },
438 { 0x7421, 0x1C },
439 { 0x7422, 0x00 },
440 { 0x7423, 0xD7 },
441 { 0x5F04, 0x00 },
442 { 0x5F05, 0xED },
443 { 0x0112, 0x0A },
444 { 0x0113, 0x0A },
445 { 0x0114, 0x03 },
446 { 0x0342, 0x14 },
447 { 0x0343, 0xE8 },
448 { 0x0340, 0x03 },
449 { 0x0341, 0x4C },
450 { 0x0344, 0x00 },
451 { 0x0345, 0x00 },
452 { 0x0346, 0x00 },
453 { 0x0347, 0x00 },
454 { 0x0348, 0x10 },
455 { 0x0349, 0x6F },
456 { 0x034A, 0x0C },
457 { 0x034B, 0x2E },
458 { 0x0381, 0x01 },
459 { 0x0383, 0x01 },
460 { 0x0385, 0x01 },
461 { 0x0387, 0x01 },
462 { 0x0900, 0x01 },
463 { 0x0901, 0x14 },
464 { 0x0401, 0x01 },
465 { 0x0404, 0x00 },
466 { 0x0405, 0x40 },
467 { 0x0408, 0x00 },
468 { 0x0409, 0x06 },
469 { 0x040A, 0x00 },
470 { 0x040B, 0x00 },
471 { 0x040C, 0x10 },
472 { 0x040D, 0x64 },
473 { 0x040E, 0x03 },
474 { 0x040F, 0x0C },
475 { 0x3038, 0x00 },
476 { 0x303A, 0x00 },
477 { 0x303B, 0x10 },
478 { 0x300D, 0x00 },
479 { 0x034C, 0x04 },
480 { 0x034D, 0x18 },
481 { 0x034E, 0x03 },
482 { 0x034F, 0x0C },
483 { 0x0350, 0x01 },
484 { 0x0202, 0x03 },
485 { 0x0203, 0x42 },
486 { 0x0204, 0x00 },
487 { 0x0205, 0x00 },
488 { 0x020E, 0x01 },
489 { 0x020F, 0x00 },
490 { 0x0210, 0x01 },
491 { 0x0211, 0x00 },
492 { 0x0212, 0x01 },
493 { 0x0213, 0x00 },
494 { 0x0214, 0x01 },
495 { 0x0215, 0x00 },
496 { 0x7BCD, 0x00 },
497 { 0x94DC, 0x20 },
498 { 0x94DD, 0x20 },
499 { 0x94DE, 0x20 },
500 { 0x95DC, 0x20 },
501 { 0x95DD, 0x20 },
502 { 0x95DE, 0x20 },
503 { 0x7FB0, 0x00 },
504 { 0x9010, 0x3E },
505 { 0x9419, 0x50 },
506 { 0x941B, 0x50 },
507 { 0x9519, 0x50 },
508 { 0x951B, 0x50 },
509 { 0x3030, 0x00 },
510 { 0x3032, 0x00 },
511 { 0x0220, 0x00 },
512 };
513
514 static const char * const imx258_test_pattern_menu[] = {
515 "Disabled",
516 "Solid Colour",
517 "Eight Vertical Colour Bars",
518 "Colour Bars With Fade to Grey",
519 "Pseudorandom Sequence (PN9)",
520 };
521
522 /* Configurations for supported link frequencies */
523 #define IMX258_LINK_FREQ_634MHZ 633600000ULL
524 #define IMX258_LINK_FREQ_320MHZ 320000000ULL
525
526 enum {
527 IMX258_LINK_FREQ_1267MBPS,
528 IMX258_LINK_FREQ_640MBPS,
529 };
530
531 /*
532 * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
533 * data rate => double data rate; number of lanes => 4; bits per pixel => 10
534 */
link_freq_to_pixel_rate(u64 f)535 static u64 link_freq_to_pixel_rate(u64 f)
536 {
537 f *= 2 * 4;
538 do_div(f, 10);
539
540 return f;
541 }
542
543 /* Menu items for LINK_FREQ V4L2 control */
544 static const s64 link_freq_menu_items[] = {
545 IMX258_LINK_FREQ_634MHZ,
546 IMX258_LINK_FREQ_320MHZ,
547 };
548
549 /* Link frequency configs */
550 static const struct imx258_link_freq_config link_freq_configs[] = {
551 [IMX258_LINK_FREQ_1267MBPS] = {
552 .pixels_per_line = IMX258_PPL_DEFAULT,
553 .reg_list = {
554 .num_of_regs = ARRAY_SIZE(mipi_data_rate_1267mbps),
555 .regs = mipi_data_rate_1267mbps,
556 }
557 },
558 [IMX258_LINK_FREQ_640MBPS] = {
559 .pixels_per_line = IMX258_PPL_DEFAULT,
560 .reg_list = {
561 .num_of_regs = ARRAY_SIZE(mipi_data_rate_640mbps),
562 .regs = mipi_data_rate_640mbps,
563 }
564 },
565 };
566
567 /* Mode configs */
568 static const struct imx258_mode supported_modes[] = {
569 {
570 .width = 4208,
571 .height = 3118,
572 .vts_def = IMX258_VTS_30FPS,
573 .vts_min = IMX258_VTS_30FPS,
574 .reg_list = {
575 .num_of_regs = ARRAY_SIZE(mode_4208x3118_regs),
576 .regs = mode_4208x3118_regs,
577 },
578 .link_freq_index = IMX258_LINK_FREQ_1267MBPS,
579 },
580 {
581 .width = 2104,
582 .height = 1560,
583 .vts_def = IMX258_VTS_30FPS_2K,
584 .vts_min = IMX258_VTS_30FPS_2K,
585 .reg_list = {
586 .num_of_regs = ARRAY_SIZE(mode_2104_1560_regs),
587 .regs = mode_2104_1560_regs,
588 },
589 .link_freq_index = IMX258_LINK_FREQ_640MBPS,
590 },
591 {
592 .width = 1048,
593 .height = 780,
594 .vts_def = IMX258_VTS_30FPS_VGA,
595 .vts_min = IMX258_VTS_30FPS_VGA,
596 .reg_list = {
597 .num_of_regs = ARRAY_SIZE(mode_1048_780_regs),
598 .regs = mode_1048_780_regs,
599 },
600 .link_freq_index = IMX258_LINK_FREQ_640MBPS,
601 },
602 };
603
604 struct imx258 {
605 struct v4l2_subdev sd;
606 struct media_pad pad;
607
608 struct v4l2_ctrl_handler ctrl_handler;
609 /* V4L2 Controls */
610 struct v4l2_ctrl *link_freq;
611 struct v4l2_ctrl *pixel_rate;
612 struct v4l2_ctrl *vblank;
613 struct v4l2_ctrl *hblank;
614 struct v4l2_ctrl *exposure;
615
616 /* Current mode */
617 const struct imx258_mode *cur_mode;
618
619 /*
620 * Mutex for serialized access:
621 * Protect sensor module set pad format and start/stop streaming safely.
622 */
623 struct mutex mutex;
624
625 struct clk *clk;
626 };
627
to_imx258(struct v4l2_subdev * _sd)628 static inline struct imx258 *to_imx258(struct v4l2_subdev *_sd)
629 {
630 return container_of(_sd, struct imx258, sd);
631 }
632
633 /* Read registers up to 2 at a time */
imx258_read_reg(struct imx258 * imx258,u16 reg,u32 len,u32 * val)634 static int imx258_read_reg(struct imx258 *imx258, u16 reg, u32 len, u32 *val)
635 {
636 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
637 struct i2c_msg msgs[2];
638 u8 addr_buf[2] = { reg >> 8, reg & 0xff };
639 u8 data_buf[4] = { 0, };
640 int ret;
641
642 if (len > 4)
643 return -EINVAL;
644
645 /* Write register address */
646 msgs[0].addr = client->addr;
647 msgs[0].flags = 0;
648 msgs[0].len = ARRAY_SIZE(addr_buf);
649 msgs[0].buf = addr_buf;
650
651 /* Read data from register */
652 msgs[1].addr = client->addr;
653 msgs[1].flags = I2C_M_RD;
654 msgs[1].len = len;
655 msgs[1].buf = &data_buf[4 - len];
656
657 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
658 if (ret != ARRAY_SIZE(msgs))
659 return -EIO;
660
661 *val = get_unaligned_be32(data_buf);
662
663 return 0;
664 }
665
666 /* Write registers up to 2 at a time */
imx258_write_reg(struct imx258 * imx258,u16 reg,u32 len,u32 val)667 static int imx258_write_reg(struct imx258 *imx258, u16 reg, u32 len, u32 val)
668 {
669 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
670 u8 buf[6];
671
672 if (len > 4)
673 return -EINVAL;
674
675 put_unaligned_be16(reg, buf);
676 put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
677 if (i2c_master_send(client, buf, len + 2) != len + 2)
678 return -EIO;
679
680 return 0;
681 }
682
683 /* Write a list of registers */
imx258_write_regs(struct imx258 * imx258,const struct imx258_reg * regs,u32 len)684 static int imx258_write_regs(struct imx258 *imx258,
685 const struct imx258_reg *regs, u32 len)
686 {
687 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
688 unsigned int i;
689 int ret;
690
691 for (i = 0; i < len; i++) {
692 ret = imx258_write_reg(imx258, regs[i].address, 1,
693 regs[i].val);
694 if (ret) {
695 dev_err_ratelimited(
696 &client->dev,
697 "Failed to write reg 0x%4.4x. error = %d\n",
698 regs[i].address, ret);
699
700 return ret;
701 }
702 }
703
704 return 0;
705 }
706
707 /* Open sub-device */
imx258_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)708 static int imx258_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
709 {
710 struct v4l2_mbus_framefmt *try_fmt =
711 v4l2_subdev_state_get_format(fh->state, 0);
712
713 /* Initialize try_fmt */
714 try_fmt->width = supported_modes[0].width;
715 try_fmt->height = supported_modes[0].height;
716 try_fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
717 try_fmt->field = V4L2_FIELD_NONE;
718
719 return 0;
720 }
721
imx258_update_digital_gain(struct imx258 * imx258,u32 len,u32 val)722 static int imx258_update_digital_gain(struct imx258 *imx258, u32 len, u32 val)
723 {
724 int ret;
725
726 ret = imx258_write_reg(imx258, IMX258_REG_GR_DIGITAL_GAIN,
727 IMX258_REG_VALUE_16BIT,
728 val);
729 if (ret)
730 return ret;
731 ret = imx258_write_reg(imx258, IMX258_REG_GB_DIGITAL_GAIN,
732 IMX258_REG_VALUE_16BIT,
733 val);
734 if (ret)
735 return ret;
736 ret = imx258_write_reg(imx258, IMX258_REG_R_DIGITAL_GAIN,
737 IMX258_REG_VALUE_16BIT,
738 val);
739 if (ret)
740 return ret;
741 ret = imx258_write_reg(imx258, IMX258_REG_B_DIGITAL_GAIN,
742 IMX258_REG_VALUE_16BIT,
743 val);
744 if (ret)
745 return ret;
746 return 0;
747 }
748
imx258_set_ctrl(struct v4l2_ctrl * ctrl)749 static int imx258_set_ctrl(struct v4l2_ctrl *ctrl)
750 {
751 struct imx258 *imx258 =
752 container_of(ctrl->handler, struct imx258, ctrl_handler);
753 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
754 int ret = 0;
755
756 /*
757 * Applying V4L2 control value only happens
758 * when power is up for streaming
759 */
760 if (pm_runtime_get_if_in_use(&client->dev) == 0)
761 return 0;
762
763 switch (ctrl->id) {
764 case V4L2_CID_ANALOGUE_GAIN:
765 ret = imx258_write_reg(imx258, IMX258_REG_ANALOG_GAIN,
766 IMX258_REG_VALUE_16BIT,
767 ctrl->val);
768 break;
769 case V4L2_CID_EXPOSURE:
770 ret = imx258_write_reg(imx258, IMX258_REG_EXPOSURE,
771 IMX258_REG_VALUE_16BIT,
772 ctrl->val);
773 break;
774 case V4L2_CID_DIGITAL_GAIN:
775 ret = imx258_update_digital_gain(imx258, IMX258_REG_VALUE_16BIT,
776 ctrl->val);
777 break;
778 case V4L2_CID_TEST_PATTERN:
779 ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
780 IMX258_REG_VALUE_16BIT,
781 ctrl->val);
782 ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL,
783 IMX258_REG_VALUE_08BIT,
784 !ctrl->val ? REG_CONFIG_MIRROR_FLIP :
785 REG_CONFIG_FLIP_TEST_PATTERN);
786 break;
787 case V4L2_CID_WIDE_DYNAMIC_RANGE:
788 if (!ctrl->val) {
789 ret = imx258_write_reg(imx258, IMX258_REG_HDR,
790 IMX258_REG_VALUE_08BIT,
791 IMX258_HDR_RATIO_MIN);
792 } else {
793 ret = imx258_write_reg(imx258, IMX258_REG_HDR,
794 IMX258_REG_VALUE_08BIT,
795 IMX258_HDR_ON);
796 if (ret)
797 break;
798 ret = imx258_write_reg(imx258, IMX258_REG_HDR_RATIO,
799 IMX258_REG_VALUE_08BIT,
800 BIT(IMX258_HDR_RATIO_MAX));
801 }
802 break;
803 default:
804 dev_info(&client->dev,
805 "ctrl(id:0x%x,val:0x%x) is not handled\n",
806 ctrl->id, ctrl->val);
807 ret = -EINVAL;
808 break;
809 }
810
811 pm_runtime_put(&client->dev);
812
813 return ret;
814 }
815
816 static const struct v4l2_ctrl_ops imx258_ctrl_ops = {
817 .s_ctrl = imx258_set_ctrl,
818 };
819
imx258_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)820 static int imx258_enum_mbus_code(struct v4l2_subdev *sd,
821 struct v4l2_subdev_state *sd_state,
822 struct v4l2_subdev_mbus_code_enum *code)
823 {
824 /* Only one bayer order(GRBG) is supported */
825 if (code->index > 0)
826 return -EINVAL;
827
828 code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
829
830 return 0;
831 }
832
imx258_enum_frame_size(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_frame_size_enum * fse)833 static int imx258_enum_frame_size(struct v4l2_subdev *sd,
834 struct v4l2_subdev_state *sd_state,
835 struct v4l2_subdev_frame_size_enum *fse)
836 {
837 if (fse->index >= ARRAY_SIZE(supported_modes))
838 return -EINVAL;
839
840 if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
841 return -EINVAL;
842
843 fse->min_width = supported_modes[fse->index].width;
844 fse->max_width = fse->min_width;
845 fse->min_height = supported_modes[fse->index].height;
846 fse->max_height = fse->min_height;
847
848 return 0;
849 }
850
imx258_update_pad_format(const struct imx258_mode * mode,struct v4l2_subdev_format * fmt)851 static void imx258_update_pad_format(const struct imx258_mode *mode,
852 struct v4l2_subdev_format *fmt)
853 {
854 fmt->format.width = mode->width;
855 fmt->format.height = mode->height;
856 fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
857 fmt->format.field = V4L2_FIELD_NONE;
858 }
859
__imx258_get_pad_format(struct imx258 * imx258,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)860 static int __imx258_get_pad_format(struct imx258 *imx258,
861 struct v4l2_subdev_state *sd_state,
862 struct v4l2_subdev_format *fmt)
863 {
864 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
865 fmt->format = *v4l2_subdev_state_get_format(sd_state,
866 fmt->pad);
867 else
868 imx258_update_pad_format(imx258->cur_mode, fmt);
869
870 return 0;
871 }
872
imx258_get_pad_format(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)873 static int imx258_get_pad_format(struct v4l2_subdev *sd,
874 struct v4l2_subdev_state *sd_state,
875 struct v4l2_subdev_format *fmt)
876 {
877 struct imx258 *imx258 = to_imx258(sd);
878 int ret;
879
880 mutex_lock(&imx258->mutex);
881 ret = __imx258_get_pad_format(imx258, sd_state, fmt);
882 mutex_unlock(&imx258->mutex);
883
884 return ret;
885 }
886
imx258_set_pad_format(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)887 static int imx258_set_pad_format(struct v4l2_subdev *sd,
888 struct v4l2_subdev_state *sd_state,
889 struct v4l2_subdev_format *fmt)
890 {
891 struct imx258 *imx258 = to_imx258(sd);
892 const struct imx258_mode *mode;
893 struct v4l2_mbus_framefmt *framefmt;
894 s32 vblank_def;
895 s32 vblank_min;
896 s64 h_blank;
897 s64 pixel_rate;
898 s64 link_freq;
899
900 mutex_lock(&imx258->mutex);
901
902 /* Only one raw bayer(GBRG) order is supported */
903 fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
904
905 mode = v4l2_find_nearest_size(supported_modes,
906 ARRAY_SIZE(supported_modes), width, height,
907 fmt->format.width, fmt->format.height);
908 imx258_update_pad_format(mode, fmt);
909 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
910 framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
911 *framefmt = fmt->format;
912 } else {
913 imx258->cur_mode = mode;
914 __v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index);
915
916 link_freq = link_freq_menu_items[mode->link_freq_index];
917 pixel_rate = link_freq_to_pixel_rate(link_freq);
918 __v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate);
919 /* Update limits and set FPS to default */
920 vblank_def = imx258->cur_mode->vts_def -
921 imx258->cur_mode->height;
922 vblank_min = imx258->cur_mode->vts_min -
923 imx258->cur_mode->height;
924 __v4l2_ctrl_modify_range(
925 imx258->vblank, vblank_min,
926 IMX258_VTS_MAX - imx258->cur_mode->height, 1,
927 vblank_def);
928 __v4l2_ctrl_s_ctrl(imx258->vblank, vblank_def);
929 h_blank =
930 link_freq_configs[mode->link_freq_index].pixels_per_line
931 - imx258->cur_mode->width;
932 __v4l2_ctrl_modify_range(imx258->hblank, h_blank,
933 h_blank, 1, h_blank);
934 }
935
936 mutex_unlock(&imx258->mutex);
937
938 return 0;
939 }
940
941 /* Start streaming */
imx258_start_streaming(struct imx258 * imx258)942 static int imx258_start_streaming(struct imx258 *imx258)
943 {
944 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
945 const struct imx258_reg_list *reg_list;
946 int ret, link_freq_index;
947
948 /* Setup PLL */
949 link_freq_index = imx258->cur_mode->link_freq_index;
950 reg_list = &link_freq_configs[link_freq_index].reg_list;
951 ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
952 if (ret) {
953 dev_err(&client->dev, "%s failed to set plls\n", __func__);
954 return ret;
955 }
956
957 /* Apply default values of current mode */
958 reg_list = &imx258->cur_mode->reg_list;
959 ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
960 if (ret) {
961 dev_err(&client->dev, "%s failed to set mode\n", __func__);
962 return ret;
963 }
964
965 /* Set Orientation be 180 degree */
966 ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL,
967 IMX258_REG_VALUE_08BIT, REG_CONFIG_MIRROR_FLIP);
968 if (ret) {
969 dev_err(&client->dev, "%s failed to set orientation\n",
970 __func__);
971 return ret;
972 }
973
974 /* Apply customized values from user */
975 ret = __v4l2_ctrl_handler_setup(imx258->sd.ctrl_handler);
976 if (ret)
977 return ret;
978
979 /* set stream on register */
980 return imx258_write_reg(imx258, IMX258_REG_MODE_SELECT,
981 IMX258_REG_VALUE_08BIT,
982 IMX258_MODE_STREAMING);
983 }
984
985 /* Stop streaming */
imx258_stop_streaming(struct imx258 * imx258)986 static int imx258_stop_streaming(struct imx258 *imx258)
987 {
988 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
989 int ret;
990
991 /* set stream off register */
992 ret = imx258_write_reg(imx258, IMX258_REG_MODE_SELECT,
993 IMX258_REG_VALUE_08BIT, IMX258_MODE_STANDBY);
994 if (ret)
995 dev_err(&client->dev, "%s failed to set stream\n", __func__);
996
997 /*
998 * Return success even if it was an error, as there is nothing the
999 * caller can do about it.
1000 */
1001 return 0;
1002 }
1003
imx258_power_on(struct device * dev)1004 static int imx258_power_on(struct device *dev)
1005 {
1006 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1007 struct imx258 *imx258 = to_imx258(sd);
1008 int ret;
1009
1010 ret = clk_prepare_enable(imx258->clk);
1011 if (ret)
1012 dev_err(dev, "failed to enable clock\n");
1013
1014 return ret;
1015 }
1016
imx258_power_off(struct device * dev)1017 static int imx258_power_off(struct device *dev)
1018 {
1019 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1020 struct imx258 *imx258 = to_imx258(sd);
1021
1022 clk_disable_unprepare(imx258->clk);
1023
1024 return 0;
1025 }
1026
imx258_set_stream(struct v4l2_subdev * sd,int enable)1027 static int imx258_set_stream(struct v4l2_subdev *sd, int enable)
1028 {
1029 struct imx258 *imx258 = to_imx258(sd);
1030 struct i2c_client *client = v4l2_get_subdevdata(sd);
1031 int ret = 0;
1032
1033 mutex_lock(&imx258->mutex);
1034
1035 if (enable) {
1036 ret = pm_runtime_resume_and_get(&client->dev);
1037 if (ret < 0)
1038 goto err_unlock;
1039
1040 /*
1041 * Apply default & customized values
1042 * and then start streaming.
1043 */
1044 ret = imx258_start_streaming(imx258);
1045 if (ret)
1046 goto err_rpm_put;
1047 } else {
1048 imx258_stop_streaming(imx258);
1049 pm_runtime_put(&client->dev);
1050 }
1051
1052 mutex_unlock(&imx258->mutex);
1053
1054 return ret;
1055
1056 err_rpm_put:
1057 pm_runtime_put(&client->dev);
1058 err_unlock:
1059 mutex_unlock(&imx258->mutex);
1060
1061 return ret;
1062 }
1063
1064 /* Verify chip ID */
imx258_identify_module(struct imx258 * imx258)1065 static int imx258_identify_module(struct imx258 *imx258)
1066 {
1067 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
1068 int ret;
1069 u32 val;
1070
1071 ret = imx258_read_reg(imx258, IMX258_REG_CHIP_ID,
1072 IMX258_REG_VALUE_16BIT, &val);
1073 if (ret) {
1074 dev_err(&client->dev, "failed to read chip id %x\n",
1075 IMX258_CHIP_ID);
1076 return ret;
1077 }
1078
1079 if (val != IMX258_CHIP_ID) {
1080 dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
1081 IMX258_CHIP_ID, val);
1082 return -EIO;
1083 }
1084
1085 return 0;
1086 }
1087
1088 static const struct v4l2_subdev_video_ops imx258_video_ops = {
1089 .s_stream = imx258_set_stream,
1090 };
1091
1092 static const struct v4l2_subdev_pad_ops imx258_pad_ops = {
1093 .enum_mbus_code = imx258_enum_mbus_code,
1094 .get_fmt = imx258_get_pad_format,
1095 .set_fmt = imx258_set_pad_format,
1096 .enum_frame_size = imx258_enum_frame_size,
1097 };
1098
1099 static const struct v4l2_subdev_ops imx258_subdev_ops = {
1100 .video = &imx258_video_ops,
1101 .pad = &imx258_pad_ops,
1102 };
1103
1104 static const struct v4l2_subdev_internal_ops imx258_internal_ops = {
1105 .open = imx258_open,
1106 };
1107
1108 /* Initialize control handlers */
imx258_init_controls(struct imx258 * imx258)1109 static int imx258_init_controls(struct imx258 *imx258)
1110 {
1111 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
1112 struct v4l2_fwnode_device_properties props;
1113 struct v4l2_ctrl_handler *ctrl_hdlr;
1114 struct v4l2_ctrl *vflip, *hflip;
1115 s64 vblank_def;
1116 s64 vblank_min;
1117 s64 pixel_rate_min;
1118 s64 pixel_rate_max;
1119 int ret;
1120
1121 ctrl_hdlr = &imx258->ctrl_handler;
1122 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 13);
1123 if (ret)
1124 return ret;
1125
1126 mutex_init(&imx258->mutex);
1127 ctrl_hdlr->lock = &imx258->mutex;
1128 imx258->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
1129 &imx258_ctrl_ops,
1130 V4L2_CID_LINK_FREQ,
1131 ARRAY_SIZE(link_freq_menu_items) - 1,
1132 0,
1133 link_freq_menu_items);
1134
1135 if (imx258->link_freq)
1136 imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1137
1138 /* The driver only supports one bayer order and flips by default. */
1139 hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
1140 V4L2_CID_HFLIP, 1, 1, 1, 1);
1141 if (hflip)
1142 hflip->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1143
1144 vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
1145 V4L2_CID_VFLIP, 1, 1, 1, 1);
1146 if (vflip)
1147 vflip->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1148
1149 pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]);
1150 pixel_rate_min = link_freq_to_pixel_rate(link_freq_menu_items[1]);
1151 /* By default, PIXEL_RATE is read only */
1152 imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
1153 V4L2_CID_PIXEL_RATE,
1154 pixel_rate_min, pixel_rate_max,
1155 1, pixel_rate_max);
1156
1157
1158 vblank_def = imx258->cur_mode->vts_def - imx258->cur_mode->height;
1159 vblank_min = imx258->cur_mode->vts_min - imx258->cur_mode->height;
1160 imx258->vblank = v4l2_ctrl_new_std(
1161 ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_VBLANK,
1162 vblank_min,
1163 IMX258_VTS_MAX - imx258->cur_mode->height, 1,
1164 vblank_def);
1165
1166 if (imx258->vblank)
1167 imx258->vblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1168
1169 imx258->hblank = v4l2_ctrl_new_std(
1170 ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_HBLANK,
1171 IMX258_PPL_DEFAULT - imx258->cur_mode->width,
1172 IMX258_PPL_DEFAULT - imx258->cur_mode->width,
1173 1,
1174 IMX258_PPL_DEFAULT - imx258->cur_mode->width);
1175
1176 if (imx258->hblank)
1177 imx258->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1178
1179 imx258->exposure = v4l2_ctrl_new_std(
1180 ctrl_hdlr, &imx258_ctrl_ops,
1181 V4L2_CID_EXPOSURE, IMX258_EXPOSURE_MIN,
1182 IMX258_EXPOSURE_MAX, IMX258_EXPOSURE_STEP,
1183 IMX258_EXPOSURE_DEFAULT);
1184
1185 v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
1186 IMX258_ANA_GAIN_MIN, IMX258_ANA_GAIN_MAX,
1187 IMX258_ANA_GAIN_STEP, IMX258_ANA_GAIN_DEFAULT);
1188
1189 v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
1190 IMX258_DGTL_GAIN_MIN, IMX258_DGTL_GAIN_MAX,
1191 IMX258_DGTL_GAIN_STEP,
1192 IMX258_DGTL_GAIN_DEFAULT);
1193
1194 v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_WIDE_DYNAMIC_RANGE,
1195 0, 1, 1, IMX258_HDR_RATIO_DEFAULT);
1196
1197 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx258_ctrl_ops,
1198 V4L2_CID_TEST_PATTERN,
1199 ARRAY_SIZE(imx258_test_pattern_menu) - 1,
1200 0, 0, imx258_test_pattern_menu);
1201
1202 if (ctrl_hdlr->error) {
1203 ret = ctrl_hdlr->error;
1204 dev_err(&client->dev, "%s control init failed (%d)\n",
1205 __func__, ret);
1206 goto error;
1207 }
1208
1209 ret = v4l2_fwnode_device_parse(&client->dev, &props);
1210 if (ret)
1211 goto error;
1212
1213 ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx258_ctrl_ops,
1214 &props);
1215 if (ret)
1216 goto error;
1217
1218 imx258->sd.ctrl_handler = ctrl_hdlr;
1219
1220 return 0;
1221
1222 error:
1223 v4l2_ctrl_handler_free(ctrl_hdlr);
1224 mutex_destroy(&imx258->mutex);
1225
1226 return ret;
1227 }
1228
imx258_free_controls(struct imx258 * imx258)1229 static void imx258_free_controls(struct imx258 *imx258)
1230 {
1231 v4l2_ctrl_handler_free(imx258->sd.ctrl_handler);
1232 mutex_destroy(&imx258->mutex);
1233 }
1234
imx258_probe(struct i2c_client * client)1235 static int imx258_probe(struct i2c_client *client)
1236 {
1237 struct imx258 *imx258;
1238 int ret;
1239 u32 val = 0;
1240
1241 imx258 = devm_kzalloc(&client->dev, sizeof(*imx258), GFP_KERNEL);
1242 if (!imx258)
1243 return -ENOMEM;
1244
1245 imx258->clk = devm_clk_get_optional(&client->dev, NULL);
1246 if (IS_ERR(imx258->clk))
1247 return dev_err_probe(&client->dev, PTR_ERR(imx258->clk),
1248 "error getting clock\n");
1249 if (!imx258->clk) {
1250 dev_dbg(&client->dev,
1251 "no clock provided, using clock-frequency property\n");
1252
1253 device_property_read_u32(&client->dev, "clock-frequency", &val);
1254 } else {
1255 val = clk_get_rate(imx258->clk);
1256 }
1257 if (val != IMX258_INPUT_CLOCK_FREQ) {
1258 dev_err(&client->dev, "input clock frequency not supported\n");
1259 return -EINVAL;
1260 }
1261
1262 /* Initialize subdev */
1263 v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops);
1264
1265 /* Will be powered off via pm_runtime_idle */
1266 ret = imx258_power_on(&client->dev);
1267 if (ret)
1268 return ret;
1269
1270 /* Check module identity */
1271 ret = imx258_identify_module(imx258);
1272 if (ret)
1273 goto error_identify;
1274
1275 /* Set default mode to max resolution */
1276 imx258->cur_mode = &supported_modes[0];
1277
1278 ret = imx258_init_controls(imx258);
1279 if (ret)
1280 goto error_identify;
1281
1282 /* Initialize subdev */
1283 imx258->sd.internal_ops = &imx258_internal_ops;
1284 imx258->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1285 imx258->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1286
1287 /* Initialize source pad */
1288 imx258->pad.flags = MEDIA_PAD_FL_SOURCE;
1289
1290 ret = media_entity_pads_init(&imx258->sd.entity, 1, &imx258->pad);
1291 if (ret)
1292 goto error_handler_free;
1293
1294 ret = v4l2_async_register_subdev_sensor(&imx258->sd);
1295 if (ret < 0)
1296 goto error_media_entity;
1297
1298 pm_runtime_set_active(&client->dev);
1299 pm_runtime_enable(&client->dev);
1300 pm_runtime_idle(&client->dev);
1301
1302 return 0;
1303
1304 error_media_entity:
1305 media_entity_cleanup(&imx258->sd.entity);
1306
1307 error_handler_free:
1308 imx258_free_controls(imx258);
1309
1310 error_identify:
1311 imx258_power_off(&client->dev);
1312
1313 return ret;
1314 }
1315
imx258_remove(struct i2c_client * client)1316 static void imx258_remove(struct i2c_client *client)
1317 {
1318 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1319 struct imx258 *imx258 = to_imx258(sd);
1320
1321 v4l2_async_unregister_subdev(sd);
1322 media_entity_cleanup(&sd->entity);
1323 imx258_free_controls(imx258);
1324
1325 pm_runtime_disable(&client->dev);
1326 if (!pm_runtime_status_suspended(&client->dev))
1327 imx258_power_off(&client->dev);
1328 pm_runtime_set_suspended(&client->dev);
1329 }
1330
1331 static const struct dev_pm_ops imx258_pm_ops = {
1332 SET_RUNTIME_PM_OPS(imx258_power_off, imx258_power_on, NULL)
1333 };
1334
1335 #ifdef CONFIG_ACPI
1336 static const struct acpi_device_id imx258_acpi_ids[] = {
1337 { "SONY258A" },
1338 { /* sentinel */ }
1339 };
1340
1341 MODULE_DEVICE_TABLE(acpi, imx258_acpi_ids);
1342 #endif
1343
1344 static const struct of_device_id imx258_dt_ids[] = {
1345 { .compatible = "sony,imx258" },
1346 { /* sentinel */ }
1347 };
1348 MODULE_DEVICE_TABLE(of, imx258_dt_ids);
1349
1350 static struct i2c_driver imx258_i2c_driver = {
1351 .driver = {
1352 .name = "imx258",
1353 .pm = &imx258_pm_ops,
1354 .acpi_match_table = ACPI_PTR(imx258_acpi_ids),
1355 .of_match_table = imx258_dt_ids,
1356 },
1357 .probe = imx258_probe,
1358 .remove = imx258_remove,
1359 };
1360
1361 module_i2c_driver(imx258_i2c_driver);
1362
1363 MODULE_AUTHOR("Yeh, Andy <andy.yeh@intel.com>");
1364 MODULE_AUTHOR("Chiang, Alan");
1365 MODULE_AUTHOR("Chen, Jason");
1366 MODULE_DESCRIPTION("Sony IMX258 sensor driver");
1367 MODULE_LICENSE("GPL v2");
1368