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[media] V4L: rj54n1cb0c: remove superfluous soc-camera client operations
[GitHub/moto-9609/android_kernel_motorola_exynos9610.git] / drivers / media / video / rj54n1cb0c.c
1 /*
2 * Driver for RJ54N1CB0C CMOS Image Sensor from Sharp
3 *
4 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 #include <linux/delay.h>
12 #include <linux/i2c.h>
13 #include <linux/slab.h>
14 #include <linux/videodev2.h>
15
16 #include <media/rj54n1cb0c.h>
17 #include <media/soc_camera.h>
18 #include <media/soc_mediabus.h>
19 #include <media/v4l2-subdev.h>
20 #include <media/v4l2-chip-ident.h>
21
22 #define RJ54N1_DEV_CODE 0x0400
23 #define RJ54N1_DEV_CODE2 0x0401
24 #define RJ54N1_OUT_SEL 0x0403
25 #define RJ54N1_XY_OUTPUT_SIZE_S_H 0x0404
26 #define RJ54N1_X_OUTPUT_SIZE_S_L 0x0405
27 #define RJ54N1_Y_OUTPUT_SIZE_S_L 0x0406
28 #define RJ54N1_XY_OUTPUT_SIZE_P_H 0x0407
29 #define RJ54N1_X_OUTPUT_SIZE_P_L 0x0408
30 #define RJ54N1_Y_OUTPUT_SIZE_P_L 0x0409
31 #define RJ54N1_LINE_LENGTH_PCK_S_H 0x040a
32 #define RJ54N1_LINE_LENGTH_PCK_S_L 0x040b
33 #define RJ54N1_LINE_LENGTH_PCK_P_H 0x040c
34 #define RJ54N1_LINE_LENGTH_PCK_P_L 0x040d
35 #define RJ54N1_RESIZE_N 0x040e
36 #define RJ54N1_RESIZE_N_STEP 0x040f
37 #define RJ54N1_RESIZE_STEP 0x0410
38 #define RJ54N1_RESIZE_HOLD_H 0x0411
39 #define RJ54N1_RESIZE_HOLD_L 0x0412
40 #define RJ54N1_H_OBEN_OFS 0x0413
41 #define RJ54N1_V_OBEN_OFS 0x0414
42 #define RJ54N1_RESIZE_CONTROL 0x0415
43 #define RJ54N1_STILL_CONTROL 0x0417
44 #define RJ54N1_INC_USE_SEL_H 0x0425
45 #define RJ54N1_INC_USE_SEL_L 0x0426
46 #define RJ54N1_MIRROR_STILL_MODE 0x0427
47 #define RJ54N1_INIT_START 0x0428
48 #define RJ54N1_SCALE_1_2_LEV 0x0429
49 #define RJ54N1_SCALE_4_LEV 0x042a
50 #define RJ54N1_Y_GAIN 0x04d8
51 #define RJ54N1_APT_GAIN_UP 0x04fa
52 #define RJ54N1_RA_SEL_UL 0x0530
53 #define RJ54N1_BYTE_SWAP 0x0531
54 #define RJ54N1_OUT_SIGPO 0x053b
55 #define RJ54N1_WB_SEL_WEIGHT_I 0x054e
56 #define RJ54N1_BIT8_WB 0x0569
57 #define RJ54N1_HCAPS_WB 0x056a
58 #define RJ54N1_VCAPS_WB 0x056b
59 #define RJ54N1_HCAPE_WB 0x056c
60 #define RJ54N1_VCAPE_WB 0x056d
61 #define RJ54N1_EXPOSURE_CONTROL 0x058c
62 #define RJ54N1_FRAME_LENGTH_S_H 0x0595
63 #define RJ54N1_FRAME_LENGTH_S_L 0x0596
64 #define RJ54N1_FRAME_LENGTH_P_H 0x0597
65 #define RJ54N1_FRAME_LENGTH_P_L 0x0598
66 #define RJ54N1_PEAK_H 0x05b7
67 #define RJ54N1_PEAK_50 0x05b8
68 #define RJ54N1_PEAK_60 0x05b9
69 #define RJ54N1_PEAK_DIFF 0x05ba
70 #define RJ54N1_IOC 0x05ef
71 #define RJ54N1_TG_BYPASS 0x0700
72 #define RJ54N1_PLL_L 0x0701
73 #define RJ54N1_PLL_N 0x0702
74 #define RJ54N1_PLL_EN 0x0704
75 #define RJ54N1_RATIO_TG 0x0706
76 #define RJ54N1_RATIO_T 0x0707
77 #define RJ54N1_RATIO_R 0x0708
78 #define RJ54N1_RAMP_TGCLK_EN 0x0709
79 #define RJ54N1_OCLK_DSP 0x0710
80 #define RJ54N1_RATIO_OP 0x0711
81 #define RJ54N1_RATIO_O 0x0712
82 #define RJ54N1_OCLK_SEL_EN 0x0713
83 #define RJ54N1_CLK_RST 0x0717
84 #define RJ54N1_RESET_STANDBY 0x0718
85 #define RJ54N1_FWFLG 0x07fe
86
87 #define E_EXCLK (1 << 7)
88 #define SOFT_STDBY (1 << 4)
89 #define SEN_RSTX (1 << 2)
90 #define TG_RSTX (1 << 1)
91 #define DSP_RSTX (1 << 0)
92
93 #define RESIZE_HOLD_SEL (1 << 2)
94 #define RESIZE_GO (1 << 1)
95
96 /*
97 * When cropping, the camera automatically centers the cropped region, there
98 * doesn't seem to be a way to specify an explicit location of the rectangle.
99 */
100 #define RJ54N1_COLUMN_SKIP 0
101 #define RJ54N1_ROW_SKIP 0
102 #define RJ54N1_MAX_WIDTH 1600
103 #define RJ54N1_MAX_HEIGHT 1200
104
105 #define PLL_L 2
106 #define PLL_N 0x31
107
108 /* I2C addresses: 0x50, 0x51, 0x60, 0x61 */
109
110 /* RJ54N1CB0C has only one fixed colorspace per pixelcode */
111 struct rj54n1_datafmt {
112 enum v4l2_mbus_pixelcode code;
113 enum v4l2_colorspace colorspace;
114 };
115
116 /* Find a data format by a pixel code in an array */
117 static const struct rj54n1_datafmt *rj54n1_find_datafmt(
118 enum v4l2_mbus_pixelcode code, const struct rj54n1_datafmt *fmt,
119 int n)
120 {
121 int i;
122 for (i = 0; i < n; i++)
123 if (fmt[i].code == code)
124 return fmt + i;
125
126 return NULL;
127 }
128
129 static const struct rj54n1_datafmt rj54n1_colour_fmts[] = {
130 {V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
131 {V4L2_MBUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
132 {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
133 {V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
134 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
135 {V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE, V4L2_COLORSPACE_SRGB},
136 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
137 {V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE, V4L2_COLORSPACE_SRGB},
138 {V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB},
139 };
140
141 struct rj54n1_clock_div {
142 u8 ratio_tg; /* can be 0 or an odd number */
143 u8 ratio_t;
144 u8 ratio_r;
145 u8 ratio_op;
146 u8 ratio_o;
147 };
148
149 struct rj54n1 {
150 struct v4l2_subdev subdev;
151 struct rj54n1_clock_div clk_div;
152 const struct rj54n1_datafmt *fmt;
153 struct v4l2_rect rect; /* Sensor window */
154 unsigned int tgclk_mhz;
155 bool auto_wb;
156 unsigned short width; /* Output window */
157 unsigned short height;
158 unsigned short resize; /* Sensor * 1024 / resize = Output */
159 unsigned short scale;
160 u8 bank;
161 };
162
163 struct rj54n1_reg_val {
164 u16 reg;
165 u8 val;
166 };
167
168 static const struct rj54n1_reg_val bank_4[] = {
169 {0x417, 0},
170 {0x42c, 0},
171 {0x42d, 0xf0},
172 {0x42e, 0},
173 {0x42f, 0x50},
174 {0x430, 0xf5},
175 {0x431, 0x16},
176 {0x432, 0x20},
177 {0x433, 0},
178 {0x434, 0xc8},
179 {0x43c, 8},
180 {0x43e, 0x90},
181 {0x445, 0x83},
182 {0x4ba, 0x58},
183 {0x4bb, 4},
184 {0x4bc, 0x20},
185 {0x4db, 4},
186 {0x4fe, 2},
187 };
188
189 static const struct rj54n1_reg_val bank_5[] = {
190 {0x514, 0},
191 {0x516, 0},
192 {0x518, 0},
193 {0x51a, 0},
194 {0x51d, 0xff},
195 {0x56f, 0x28},
196 {0x575, 0x40},
197 {0x5bc, 0x48},
198 {0x5c1, 6},
199 {0x5e5, 0x11},
200 {0x5e6, 0x43},
201 {0x5e7, 0x33},
202 {0x5e8, 0x21},
203 {0x5e9, 0x30},
204 {0x5ea, 0x0},
205 {0x5eb, 0xa5},
206 {0x5ec, 0xff},
207 {0x5fe, 2},
208 };
209
210 static const struct rj54n1_reg_val bank_7[] = {
211 {0x70a, 0},
212 {0x714, 0xff},
213 {0x715, 0xff},
214 {0x716, 0x1f},
215 {0x7FE, 2},
216 };
217
218 static const struct rj54n1_reg_val bank_8[] = {
219 {0x800, 0x00},
220 {0x801, 0x01},
221 {0x802, 0x61},
222 {0x805, 0x00},
223 {0x806, 0x00},
224 {0x807, 0x00},
225 {0x808, 0x00},
226 {0x809, 0x01},
227 {0x80A, 0x61},
228 {0x80B, 0x00},
229 {0x80C, 0x01},
230 {0x80D, 0x00},
231 {0x80E, 0x00},
232 {0x80F, 0x00},
233 {0x810, 0x00},
234 {0x811, 0x01},
235 {0x812, 0x61},
236 {0x813, 0x00},
237 {0x814, 0x11},
238 {0x815, 0x00},
239 {0x816, 0x41},
240 {0x817, 0x00},
241 {0x818, 0x51},
242 {0x819, 0x01},
243 {0x81A, 0x1F},
244 {0x81B, 0x00},
245 {0x81C, 0x01},
246 {0x81D, 0x00},
247 {0x81E, 0x11},
248 {0x81F, 0x00},
249 {0x820, 0x41},
250 {0x821, 0x00},
251 {0x822, 0x51},
252 {0x823, 0x00},
253 {0x824, 0x00},
254 {0x825, 0x00},
255 {0x826, 0x47},
256 {0x827, 0x01},
257 {0x828, 0x4F},
258 {0x829, 0x00},
259 {0x82A, 0x00},
260 {0x82B, 0x00},
261 {0x82C, 0x30},
262 {0x82D, 0x00},
263 {0x82E, 0x40},
264 {0x82F, 0x00},
265 {0x830, 0xB3},
266 {0x831, 0x00},
267 {0x832, 0xE3},
268 {0x833, 0x00},
269 {0x834, 0x00},
270 {0x835, 0x00},
271 {0x836, 0x00},
272 {0x837, 0x00},
273 {0x838, 0x00},
274 {0x839, 0x01},
275 {0x83A, 0x61},
276 {0x83B, 0x00},
277 {0x83C, 0x01},
278 {0x83D, 0x00},
279 {0x83E, 0x00},
280 {0x83F, 0x00},
281 {0x840, 0x00},
282 {0x841, 0x01},
283 {0x842, 0x61},
284 {0x843, 0x00},
285 {0x844, 0x1D},
286 {0x845, 0x00},
287 {0x846, 0x00},
288 {0x847, 0x00},
289 {0x848, 0x00},
290 {0x849, 0x01},
291 {0x84A, 0x1F},
292 {0x84B, 0x00},
293 {0x84C, 0x05},
294 {0x84D, 0x00},
295 {0x84E, 0x19},
296 {0x84F, 0x01},
297 {0x850, 0x21},
298 {0x851, 0x01},
299 {0x852, 0x5D},
300 {0x853, 0x00},
301 {0x854, 0x00},
302 {0x855, 0x00},
303 {0x856, 0x19},
304 {0x857, 0x01},
305 {0x858, 0x21},
306 {0x859, 0x00},
307 {0x85A, 0x00},
308 {0x85B, 0x00},
309 {0x85C, 0x00},
310 {0x85D, 0x00},
311 {0x85E, 0x00},
312 {0x85F, 0x00},
313 {0x860, 0xB3},
314 {0x861, 0x00},
315 {0x862, 0xE3},
316 {0x863, 0x00},
317 {0x864, 0x00},
318 {0x865, 0x00},
319 {0x866, 0x00},
320 {0x867, 0x00},
321 {0x868, 0x00},
322 {0x869, 0xE2},
323 {0x86A, 0x00},
324 {0x86B, 0x01},
325 {0x86C, 0x06},
326 {0x86D, 0x00},
327 {0x86E, 0x00},
328 {0x86F, 0x00},
329 {0x870, 0x60},
330 {0x871, 0x8C},
331 {0x872, 0x10},
332 {0x873, 0x00},
333 {0x874, 0xE0},
334 {0x875, 0x00},
335 {0x876, 0x27},
336 {0x877, 0x01},
337 {0x878, 0x00},
338 {0x879, 0x00},
339 {0x87A, 0x00},
340 {0x87B, 0x03},
341 {0x87C, 0x00},
342 {0x87D, 0x00},
343 {0x87E, 0x00},
344 {0x87F, 0x00},
345 {0x880, 0x00},
346 {0x881, 0x00},
347 {0x882, 0x00},
348 {0x883, 0x00},
349 {0x884, 0x00},
350 {0x885, 0x00},
351 {0x886, 0xF8},
352 {0x887, 0x00},
353 {0x888, 0x03},
354 {0x889, 0x00},
355 {0x88A, 0x64},
356 {0x88B, 0x00},
357 {0x88C, 0x03},
358 {0x88D, 0x00},
359 {0x88E, 0xB1},
360 {0x88F, 0x00},
361 {0x890, 0x03},
362 {0x891, 0x01},
363 {0x892, 0x1D},
364 {0x893, 0x00},
365 {0x894, 0x03},
366 {0x895, 0x01},
367 {0x896, 0x4B},
368 {0x897, 0x00},
369 {0x898, 0xE5},
370 {0x899, 0x00},
371 {0x89A, 0x01},
372 {0x89B, 0x00},
373 {0x89C, 0x01},
374 {0x89D, 0x04},
375 {0x89E, 0xC8},
376 {0x89F, 0x00},
377 {0x8A0, 0x01},
378 {0x8A1, 0x01},
379 {0x8A2, 0x61},
380 {0x8A3, 0x00},
381 {0x8A4, 0x01},
382 {0x8A5, 0x00},
383 {0x8A6, 0x00},
384 {0x8A7, 0x00},
385 {0x8A8, 0x00},
386 {0x8A9, 0x00},
387 {0x8AA, 0x7F},
388 {0x8AB, 0x03},
389 {0x8AC, 0x00},
390 {0x8AD, 0x00},
391 {0x8AE, 0x00},
392 {0x8AF, 0x00},
393 {0x8B0, 0x00},
394 {0x8B1, 0x00},
395 {0x8B6, 0x00},
396 {0x8B7, 0x01},
397 {0x8B8, 0x00},
398 {0x8B9, 0x00},
399 {0x8BA, 0x02},
400 {0x8BB, 0x00},
401 {0x8BC, 0xFF},
402 {0x8BD, 0x00},
403 {0x8FE, 2},
404 };
405
406 static const struct rj54n1_reg_val bank_10[] = {
407 {0x10bf, 0x69}
408 };
409
410 /* Clock dividers - these are default register values, divider = register + 1 */
411 static const struct rj54n1_clock_div clk_div = {
412 .ratio_tg = 3 /* default: 5 */,
413 .ratio_t = 4 /* default: 1 */,
414 .ratio_r = 4 /* default: 0 */,
415 .ratio_op = 1 /* default: 5 */,
416 .ratio_o = 9 /* default: 0 */,
417 };
418
419 static struct rj54n1 *to_rj54n1(const struct i2c_client *client)
420 {
421 return container_of(i2c_get_clientdata(client), struct rj54n1, subdev);
422 }
423
424 static int reg_read(struct i2c_client *client, const u16 reg)
425 {
426 struct rj54n1 *rj54n1 = to_rj54n1(client);
427 int ret;
428
429 /* set bank */
430 if (rj54n1->bank != reg >> 8) {
431 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8);
432 ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8);
433 if (ret < 0)
434 return ret;
435 rj54n1->bank = reg >> 8;
436 }
437 return i2c_smbus_read_byte_data(client, reg & 0xff);
438 }
439
440 static int reg_write(struct i2c_client *client, const u16 reg,
441 const u8 data)
442 {
443 struct rj54n1 *rj54n1 = to_rj54n1(client);
444 int ret;
445
446 /* set bank */
447 if (rj54n1->bank != reg >> 8) {
448 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8);
449 ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8);
450 if (ret < 0)
451 return ret;
452 rj54n1->bank = reg >> 8;
453 }
454 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", reg & 0xff, data);
455 return i2c_smbus_write_byte_data(client, reg & 0xff, data);
456 }
457
458 static int reg_set(struct i2c_client *client, const u16 reg,
459 const u8 data, const u8 mask)
460 {
461 int ret;
462
463 ret = reg_read(client, reg);
464 if (ret < 0)
465 return ret;
466 return reg_write(client, reg, (ret & ~mask) | (data & mask));
467 }
468
469 static int reg_write_multiple(struct i2c_client *client,
470 const struct rj54n1_reg_val *rv, const int n)
471 {
472 int i, ret;
473
474 for (i = 0; i < n; i++) {
475 ret = reg_write(client, rv->reg, rv->val);
476 if (ret < 0)
477 return ret;
478 rv++;
479 }
480
481 return 0;
482 }
483
484 static int rj54n1_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
485 enum v4l2_mbus_pixelcode *code)
486 {
487 if (index >= ARRAY_SIZE(rj54n1_colour_fmts))
488 return -EINVAL;
489
490 *code = rj54n1_colour_fmts[index].code;
491 return 0;
492 }
493
494 static int rj54n1_s_stream(struct v4l2_subdev *sd, int enable)
495 {
496 struct i2c_client *client = v4l2_get_subdevdata(sd);
497
498 /* Switch between preview and still shot modes */
499 return reg_set(client, RJ54N1_STILL_CONTROL, (!enable) << 7, 0x80);
500 }
501
502 static int rj54n1_set_rect(struct i2c_client *client,
503 u16 reg_x, u16 reg_y, u16 reg_xy,
504 u32 width, u32 height)
505 {
506 int ret;
507
508 ret = reg_write(client, reg_xy,
509 ((width >> 4) & 0x70) |
510 ((height >> 8) & 7));
511
512 if (!ret)
513 ret = reg_write(client, reg_x, width & 0xff);
514 if (!ret)
515 ret = reg_write(client, reg_y, height & 0xff);
516
517 return ret;
518 }
519
520 /*
521 * Some commands, specifically certain initialisation sequences, require
522 * a commit operation.
523 */
524 static int rj54n1_commit(struct i2c_client *client)
525 {
526 int ret = reg_write(client, RJ54N1_INIT_START, 1);
527 msleep(10);
528 if (!ret)
529 ret = reg_write(client, RJ54N1_INIT_START, 0);
530 return ret;
531 }
532
533 static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h,
534 s32 *out_w, s32 *out_h);
535
536 static int rj54n1_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
537 {
538 struct i2c_client *client = v4l2_get_subdevdata(sd);
539 struct rj54n1 *rj54n1 = to_rj54n1(client);
540 struct v4l2_rect *rect = &a->c;
541 int dummy = 0, output_w, output_h,
542 input_w = rect->width, input_h = rect->height;
543 int ret;
544
545 /* arbitrary minimum width and height, edges unimportant */
546 soc_camera_limit_side(&dummy, &input_w,
547 RJ54N1_COLUMN_SKIP, 8, RJ54N1_MAX_WIDTH);
548
549 soc_camera_limit_side(&dummy, &input_h,
550 RJ54N1_ROW_SKIP, 8, RJ54N1_MAX_HEIGHT);
551
552 output_w = (input_w * 1024 + rj54n1->resize / 2) / rj54n1->resize;
553 output_h = (input_h * 1024 + rj54n1->resize / 2) / rj54n1->resize;
554
555 dev_dbg(&client->dev, "Scaling for %dx%d : %u = %dx%d\n",
556 input_w, input_h, rj54n1->resize, output_w, output_h);
557
558 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);
559 if (ret < 0)
560 return ret;
561
562 rj54n1->width = output_w;
563 rj54n1->height = output_h;
564 rj54n1->resize = ret;
565 rj54n1->rect.width = input_w;
566 rj54n1->rect.height = input_h;
567
568 return 0;
569 }
570
571 static int rj54n1_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
572 {
573 struct i2c_client *client = v4l2_get_subdevdata(sd);
574 struct rj54n1 *rj54n1 = to_rj54n1(client);
575
576 a->c = rj54n1->rect;
577 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
578
579 return 0;
580 }
581
582 static int rj54n1_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
583 {
584 a->bounds.left = RJ54N1_COLUMN_SKIP;
585 a->bounds.top = RJ54N1_ROW_SKIP;
586 a->bounds.width = RJ54N1_MAX_WIDTH;
587 a->bounds.height = RJ54N1_MAX_HEIGHT;
588 a->defrect = a->bounds;
589 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
590 a->pixelaspect.numerator = 1;
591 a->pixelaspect.denominator = 1;
592
593 return 0;
594 }
595
596 static int rj54n1_g_fmt(struct v4l2_subdev *sd,
597 struct v4l2_mbus_framefmt *mf)
598 {
599 struct i2c_client *client = v4l2_get_subdevdata(sd);
600 struct rj54n1 *rj54n1 = to_rj54n1(client);
601
602 mf->code = rj54n1->fmt->code;
603 mf->colorspace = rj54n1->fmt->colorspace;
604 mf->field = V4L2_FIELD_NONE;
605 mf->width = rj54n1->width;
606 mf->height = rj54n1->height;
607
608 return 0;
609 }
610
611 /*
612 * The actual geometry configuration routine. It scales the input window into
613 * the output one, updates the window sizes and returns an error or the resize
614 * coefficient on success. Note: we only use the "Fixed Scaling" on this camera.
615 */
616 static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h,
617 s32 *out_w, s32 *out_h)
618 {
619 struct i2c_client *client = v4l2_get_subdevdata(sd);
620 struct rj54n1 *rj54n1 = to_rj54n1(client);
621 unsigned int skip, resize, input_w = *in_w, input_h = *in_h,
622 output_w = *out_w, output_h = *out_h;
623 u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom;
624 unsigned int peak, peak_50, peak_60;
625 int ret;
626
627 /*
628 * We have a problem with crops, where the window is larger than 512x384
629 * and output window is larger than a half of the input one. In this
630 * case we have to either reduce the input window to equal or below
631 * 512x384 or the output window to equal or below 1/2 of the input.
632 */
633 if (output_w > max(512U, input_w / 2)) {
634 if (2 * output_w > RJ54N1_MAX_WIDTH) {
635 input_w = RJ54N1_MAX_WIDTH;
636 output_w = RJ54N1_MAX_WIDTH / 2;
637 } else {
638 input_w = output_w * 2;
639 }
640
641 dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n",
642 input_w, output_w);
643 }
644
645 if (output_h > max(384U, input_h / 2)) {
646 if (2 * output_h > RJ54N1_MAX_HEIGHT) {
647 input_h = RJ54N1_MAX_HEIGHT;
648 output_h = RJ54N1_MAX_HEIGHT / 2;
649 } else {
650 input_h = output_h * 2;
651 }
652
653 dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n",
654 input_h, output_h);
655 }
656
657 /* Idea: use the read mode for snapshots, handle separate geometries */
658 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L,
659 RJ54N1_Y_OUTPUT_SIZE_S_L,
660 RJ54N1_XY_OUTPUT_SIZE_S_H, output_w, output_h);
661 if (!ret)
662 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L,
663 RJ54N1_Y_OUTPUT_SIZE_P_L,
664 RJ54N1_XY_OUTPUT_SIZE_P_H, output_w, output_h);
665
666 if (ret < 0)
667 return ret;
668
669 if (output_w > input_w && output_h > input_h) {
670 input_w = output_w;
671 input_h = output_h;
672
673 resize = 1024;
674 } else {
675 unsigned int resize_x, resize_y;
676 resize_x = (input_w * 1024 + output_w / 2) / output_w;
677 resize_y = (input_h * 1024 + output_h / 2) / output_h;
678
679 /* We want max(resize_x, resize_y), check if it still fits */
680 if (resize_x > resize_y &&
681 (output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT)
682 resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) /
683 output_h;
684 else if (resize_y > resize_x &&
685 (output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH)
686 resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) /
687 output_w;
688 else
689 resize = max(resize_x, resize_y);
690
691 /* Prohibited value ranges */
692 switch (resize) {
693 case 2040 ... 2047:
694 resize = 2039;
695 break;
696 case 4080 ... 4095:
697 resize = 4079;
698 break;
699 case 8160 ... 8191:
700 resize = 8159;
701 break;
702 case 16320 ... 16384:
703 resize = 16319;
704 }
705 }
706
707 /* Set scaling */
708 ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, resize & 0xff);
709 if (!ret)
710 ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, resize >> 8);
711
712 if (ret < 0)
713 return ret;
714
715 /*
716 * Configure a skipping bitmask. The sensor will select a skipping value
717 * among set bits automatically. This is very unclear in the datasheet
718 * too. I was told, in this register one enables all skipping values,
719 * that are required for a specific resize, and the camera selects
720 * automatically, which ones to use. But it is unclear how to identify,
721 * which cropping values are needed. Secondly, why don't we just set all
722 * bits and let the camera choose? Would it increase processing time and
723 * reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to
724 * improve the image quality or stability for larger frames (see comment
725 * above), but I didn't check the framerate.
726 */
727 skip = min(resize / 1024, 15U);
728
729 inc_sel = 1 << skip;
730
731 if (inc_sel <= 2)
732 inc_sel = 0xc;
733 else if (resize & 1023 && skip < 15)
734 inc_sel |= 1 << (skip + 1);
735
736 ret = reg_write(client, RJ54N1_INC_USE_SEL_L, inc_sel & 0xfc);
737 if (!ret)
738 ret = reg_write(client, RJ54N1_INC_USE_SEL_H, inc_sel >> 8);
739
740 if (!rj54n1->auto_wb) {
741 /* Auto white balance window */
742 wb_left = output_w / 16;
743 wb_right = (3 * output_w / 4 - 3) / 4;
744 wb_top = output_h / 16;
745 wb_bottom = (3 * output_h / 4 - 3) / 4;
746 wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) |
747 ((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1);
748
749 if (!ret)
750 ret = reg_write(client, RJ54N1_BIT8_WB, wb_bit8);
751 if (!ret)
752 ret = reg_write(client, RJ54N1_HCAPS_WB, wb_left);
753 if (!ret)
754 ret = reg_write(client, RJ54N1_VCAPS_WB, wb_top);
755 if (!ret)
756 ret = reg_write(client, RJ54N1_HCAPE_WB, wb_right);
757 if (!ret)
758 ret = reg_write(client, RJ54N1_VCAPE_WB, wb_bottom);
759 }
760
761 /* Antiflicker */
762 peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz /
763 10000;
764 peak_50 = peak / 6;
765 peak_60 = peak / 5;
766
767 if (!ret)
768 ret = reg_write(client, RJ54N1_PEAK_H,
769 ((peak_50 >> 4) & 0xf0) | (peak_60 >> 8));
770 if (!ret)
771 ret = reg_write(client, RJ54N1_PEAK_50, peak_50);
772 if (!ret)
773 ret = reg_write(client, RJ54N1_PEAK_60, peak_60);
774 if (!ret)
775 ret = reg_write(client, RJ54N1_PEAK_DIFF, peak / 150);
776
777 /* Start resizing */
778 if (!ret)
779 ret = reg_write(client, RJ54N1_RESIZE_CONTROL,
780 RESIZE_HOLD_SEL | RESIZE_GO | 1);
781
782 if (ret < 0)
783 return ret;
784
785 /* Constant taken from manufacturer's example */
786 msleep(230);
787
788 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1);
789 if (ret < 0)
790 return ret;
791
792 *in_w = (output_w * resize + 512) / 1024;
793 *in_h = (output_h * resize + 512) / 1024;
794 *out_w = output_w;
795 *out_h = output_h;
796
797 dev_dbg(&client->dev, "Scaled for %dx%d : %u = %ux%u, skip %u\n",
798 *in_w, *in_h, resize, output_w, output_h, skip);
799
800 return resize;
801 }
802
803 static int rj54n1_set_clock(struct i2c_client *client)
804 {
805 struct rj54n1 *rj54n1 = to_rj54n1(client);
806 int ret;
807
808 /* Enable external clock */
809 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY);
810 /* Leave stand-by. Note: use this when implementing suspend / resume */
811 if (!ret)
812 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK);
813
814 if (!ret)
815 ret = reg_write(client, RJ54N1_PLL_L, PLL_L);
816 if (!ret)
817 ret = reg_write(client, RJ54N1_PLL_N, PLL_N);
818
819 /* TGCLK dividers */
820 if (!ret)
821 ret = reg_write(client, RJ54N1_RATIO_TG,
822 rj54n1->clk_div.ratio_tg);
823 if (!ret)
824 ret = reg_write(client, RJ54N1_RATIO_T,
825 rj54n1->clk_div.ratio_t);
826 if (!ret)
827 ret = reg_write(client, RJ54N1_RATIO_R,
828 rj54n1->clk_div.ratio_r);
829
830 /* Enable TGCLK & RAMP */
831 if (!ret)
832 ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, 3);
833
834 /* Disable clock output */
835 if (!ret)
836 ret = reg_write(client, RJ54N1_OCLK_DSP, 0);
837
838 /* Set divisors */
839 if (!ret)
840 ret = reg_write(client, RJ54N1_RATIO_OP,
841 rj54n1->clk_div.ratio_op);
842 if (!ret)
843 ret = reg_write(client, RJ54N1_RATIO_O,
844 rj54n1->clk_div.ratio_o);
845
846 /* Enable OCLK */
847 if (!ret)
848 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);
849
850 /* Use PLL for Timing Generator, write 2 to reserved bits */
851 if (!ret)
852 ret = reg_write(client, RJ54N1_TG_BYPASS, 2);
853
854 /* Take sensor out of reset */
855 if (!ret)
856 ret = reg_write(client, RJ54N1_RESET_STANDBY,
857 E_EXCLK | SEN_RSTX);
858 /* Enable PLL */
859 if (!ret)
860 ret = reg_write(client, RJ54N1_PLL_EN, 1);
861
862 /* Wait for PLL to stabilise */
863 msleep(10);
864
865 /* Enable clock to frequency divider */
866 if (!ret)
867 ret = reg_write(client, RJ54N1_CLK_RST, 1);
868
869 if (!ret)
870 ret = reg_read(client, RJ54N1_CLK_RST);
871 if (ret != 1) {
872 dev_err(&client->dev,
873 "Resetting RJ54N1CB0C clock failed: %d!\n", ret);
874 return -EIO;
875 }
876
877 /* Start the PLL */
878 ret = reg_set(client, RJ54N1_OCLK_DSP, 1, 1);
879
880 /* Enable OCLK */
881 if (!ret)
882 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);
883
884 return ret;
885 }
886
887 static int rj54n1_reg_init(struct i2c_client *client)
888 {
889 struct rj54n1 *rj54n1 = to_rj54n1(client);
890 int ret = rj54n1_set_clock(client);
891
892 if (!ret)
893 ret = reg_write_multiple(client, bank_7, ARRAY_SIZE(bank_7));
894 if (!ret)
895 ret = reg_write_multiple(client, bank_10, ARRAY_SIZE(bank_10));
896
897 /* Set binning divisors */
898 if (!ret)
899 ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, 3 | (7 << 4));
900 if (!ret)
901 ret = reg_write(client, RJ54N1_SCALE_4_LEV, 0xf);
902
903 /* Switch to fixed resize mode */
904 if (!ret)
905 ret = reg_write(client, RJ54N1_RESIZE_CONTROL,
906 RESIZE_HOLD_SEL | 1);
907
908 /* Set gain */
909 if (!ret)
910 ret = reg_write(client, RJ54N1_Y_GAIN, 0x84);
911
912 /*
913 * Mirror the image back: default is upside down and left-to-right...
914 * Set manual preview / still shot switching
915 */
916 if (!ret)
917 ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, 0x27);
918
919 if (!ret)
920 ret = reg_write_multiple(client, bank_4, ARRAY_SIZE(bank_4));
921
922 /* Auto exposure area */
923 if (!ret)
924 ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, 0x80);
925 /* Check current auto WB config */
926 if (!ret)
927 ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I);
928 if (ret >= 0) {
929 rj54n1->auto_wb = ret & 0x80;
930 ret = reg_write_multiple(client, bank_5, ARRAY_SIZE(bank_5));
931 }
932 if (!ret)
933 ret = reg_write_multiple(client, bank_8, ARRAY_SIZE(bank_8));
934
935 if (!ret)
936 ret = reg_write(client, RJ54N1_RESET_STANDBY,
937 E_EXCLK | DSP_RSTX | SEN_RSTX);
938
939 /* Commit init */
940 if (!ret)
941 ret = rj54n1_commit(client);
942
943 /* Take DSP, TG, sensor out of reset */
944 if (!ret)
945 ret = reg_write(client, RJ54N1_RESET_STANDBY,
946 E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX);
947
948 /* Start register update? Same register as 0x?FE in many bank_* sets */
949 if (!ret)
950 ret = reg_write(client, RJ54N1_FWFLG, 2);
951
952 /* Constant taken from manufacturer's example */
953 msleep(700);
954
955 return ret;
956 }
957
958 static int rj54n1_try_fmt(struct v4l2_subdev *sd,
959 struct v4l2_mbus_framefmt *mf)
960 {
961 struct i2c_client *client = v4l2_get_subdevdata(sd);
962 struct rj54n1 *rj54n1 = to_rj54n1(client);
963 const struct rj54n1_datafmt *fmt;
964 int align = mf->code == V4L2_MBUS_FMT_SBGGR10_1X10 ||
965 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE ||
966 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE ||
967 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE ||
968 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE;
969
970 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n",
971 __func__, mf->code, mf->width, mf->height);
972
973 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,
974 ARRAY_SIZE(rj54n1_colour_fmts));
975 if (!fmt) {
976 fmt = rj54n1->fmt;
977 mf->code = fmt->code;
978 }
979
980 mf->field = V4L2_FIELD_NONE;
981 mf->colorspace = fmt->colorspace;
982
983 v4l_bound_align_image(&mf->width, 112, RJ54N1_MAX_WIDTH, align,
984 &mf->height, 84, RJ54N1_MAX_HEIGHT, align, 0);
985
986 return 0;
987 }
988
989 static int rj54n1_s_fmt(struct v4l2_subdev *sd,
990 struct v4l2_mbus_framefmt *mf)
991 {
992 struct i2c_client *client = v4l2_get_subdevdata(sd);
993 struct rj54n1 *rj54n1 = to_rj54n1(client);
994 const struct rj54n1_datafmt *fmt;
995 int output_w, output_h, max_w, max_h,
996 input_w = rj54n1->rect.width, input_h = rj54n1->rect.height;
997 int ret;
998
999 /*
1000 * The host driver can call us without .try_fmt(), so, we have to take
1001 * care ourseleves
1002 */
1003 rj54n1_try_fmt(sd, mf);
1004
1005 /*
1006 * Verify if the sensor has just been powered on. TODO: replace this
1007 * with proper PM, when a suitable API is available.
1008 */
1009 ret = reg_read(client, RJ54N1_RESET_STANDBY);
1010 if (ret < 0)
1011 return ret;
1012
1013 if (!(ret & E_EXCLK)) {
1014 ret = rj54n1_reg_init(client);
1015 if (ret < 0)
1016 return ret;
1017 }
1018
1019 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n",
1020 __func__, mf->code, mf->width, mf->height);
1021
1022 /* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */
1023 switch (mf->code) {
1024 case V4L2_MBUS_FMT_YUYV8_2X8:
1025 ret = reg_write(client, RJ54N1_OUT_SEL, 0);
1026 if (!ret)
1027 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1028 break;
1029 case V4L2_MBUS_FMT_YVYU8_2X8:
1030 ret = reg_write(client, RJ54N1_OUT_SEL, 0);
1031 if (!ret)
1032 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1033 break;
1034 case V4L2_MBUS_FMT_RGB565_2X8_LE:
1035 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);
1036 if (!ret)
1037 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1038 break;
1039 case V4L2_MBUS_FMT_RGB565_2X8_BE:
1040 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);
1041 if (!ret)
1042 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1043 break;
1044 case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE:
1045 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1046 if (!ret)
1047 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1048 if (!ret)
1049 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);
1050 break;
1051 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
1052 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1053 if (!ret)
1054 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1055 if (!ret)
1056 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);
1057 break;
1058 case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE:
1059 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1060 if (!ret)
1061 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1062 if (!ret)
1063 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);
1064 break;
1065 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE:
1066 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1067 if (!ret)
1068 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1069 if (!ret)
1070 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);
1071 break;
1072 case V4L2_MBUS_FMT_SBGGR10_1X10:
1073 ret = reg_write(client, RJ54N1_OUT_SEL, 5);
1074 break;
1075 default:
1076 ret = -EINVAL;
1077 }
1078
1079 /* Special case: a raw mode with 10 bits of data per clock tick */
1080 if (!ret)
1081 ret = reg_set(client, RJ54N1_OCLK_SEL_EN,
1082 (mf->code == V4L2_MBUS_FMT_SBGGR10_1X10) << 1, 2);
1083
1084 if (ret < 0)
1085 return ret;
1086
1087 /* Supported scales 1:1 >= scale > 1:16 */
1088 max_w = mf->width * (16 * 1024 - 1) / 1024;
1089 if (input_w > max_w)
1090 input_w = max_w;
1091 max_h = mf->height * (16 * 1024 - 1) / 1024;
1092 if (input_h > max_h)
1093 input_h = max_h;
1094
1095 output_w = mf->width;
1096 output_h = mf->height;
1097
1098 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);
1099 if (ret < 0)
1100 return ret;
1101
1102 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,
1103 ARRAY_SIZE(rj54n1_colour_fmts));
1104
1105 rj54n1->fmt = fmt;
1106 rj54n1->resize = ret;
1107 rj54n1->rect.width = input_w;
1108 rj54n1->rect.height = input_h;
1109 rj54n1->width = output_w;
1110 rj54n1->height = output_h;
1111
1112 mf->width = output_w;
1113 mf->height = output_h;
1114 mf->field = V4L2_FIELD_NONE;
1115 mf->colorspace = fmt->colorspace;
1116
1117 return 0;
1118 }
1119
1120 static int rj54n1_g_chip_ident(struct v4l2_subdev *sd,
1121 struct v4l2_dbg_chip_ident *id)
1122 {
1123 struct i2c_client *client = v4l2_get_subdevdata(sd);
1124
1125 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
1126 return -EINVAL;
1127
1128 if (id->match.addr != client->addr)
1129 return -ENODEV;
1130
1131 id->ident = V4L2_IDENT_RJ54N1CB0C;
1132 id->revision = 0;
1133
1134 return 0;
1135 }
1136
1137 #ifdef CONFIG_VIDEO_ADV_DEBUG
1138 static int rj54n1_g_register(struct v4l2_subdev *sd,
1139 struct v4l2_dbg_register *reg)
1140 {
1141 struct i2c_client *client = v4l2_get_subdevdata(sd);
1142
1143 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR ||
1144 reg->reg < 0x400 || reg->reg > 0x1fff)
1145 /* Registers > 0x0800 are only available from Sharp support */
1146 return -EINVAL;
1147
1148 if (reg->match.addr != client->addr)
1149 return -ENODEV;
1150
1151 reg->size = 1;
1152 reg->val = reg_read(client, reg->reg);
1153
1154 if (reg->val > 0xff)
1155 return -EIO;
1156
1157 return 0;
1158 }
1159
1160 static int rj54n1_s_register(struct v4l2_subdev *sd,
1161 struct v4l2_dbg_register *reg)
1162 {
1163 struct i2c_client *client = v4l2_get_subdevdata(sd);
1164
1165 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR ||
1166 reg->reg < 0x400 || reg->reg > 0x1fff)
1167 /* Registers >= 0x0800 are only available from Sharp support */
1168 return -EINVAL;
1169
1170 if (reg->match.addr != client->addr)
1171 return -ENODEV;
1172
1173 if (reg_write(client, reg->reg, reg->val) < 0)
1174 return -EIO;
1175
1176 return 0;
1177 }
1178 #endif
1179
1180 static const struct v4l2_queryctrl rj54n1_controls[] = {
1181 {
1182 .id = V4L2_CID_VFLIP,
1183 .type = V4L2_CTRL_TYPE_BOOLEAN,
1184 .name = "Flip Vertically",
1185 .minimum = 0,
1186 .maximum = 1,
1187 .step = 1,
1188 .default_value = 0,
1189 }, {
1190 .id = V4L2_CID_HFLIP,
1191 .type = V4L2_CTRL_TYPE_BOOLEAN,
1192 .name = "Flip Horizontally",
1193 .minimum = 0,
1194 .maximum = 1,
1195 .step = 1,
1196 .default_value = 0,
1197 }, {
1198 .id = V4L2_CID_GAIN,
1199 .type = V4L2_CTRL_TYPE_INTEGER,
1200 .name = "Gain",
1201 .minimum = 0,
1202 .maximum = 127,
1203 .step = 1,
1204 .default_value = 66,
1205 .flags = V4L2_CTRL_FLAG_SLIDER,
1206 }, {
1207 .id = V4L2_CID_AUTO_WHITE_BALANCE,
1208 .type = V4L2_CTRL_TYPE_BOOLEAN,
1209 .name = "Auto white balance",
1210 .minimum = 0,
1211 .maximum = 1,
1212 .step = 1,
1213 .default_value = 1,
1214 },
1215 };
1216
1217 static struct soc_camera_ops rj54n1_ops = {
1218 .controls = rj54n1_controls,
1219 .num_controls = ARRAY_SIZE(rj54n1_controls),
1220 };
1221
1222 static int rj54n1_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
1223 {
1224 struct i2c_client *client = v4l2_get_subdevdata(sd);
1225 struct rj54n1 *rj54n1 = to_rj54n1(client);
1226 int data;
1227
1228 switch (ctrl->id) {
1229 case V4L2_CID_VFLIP:
1230 data = reg_read(client, RJ54N1_MIRROR_STILL_MODE);
1231 if (data < 0)
1232 return -EIO;
1233 ctrl->value = !(data & 1);
1234 break;
1235 case V4L2_CID_HFLIP:
1236 data = reg_read(client, RJ54N1_MIRROR_STILL_MODE);
1237 if (data < 0)
1238 return -EIO;
1239 ctrl->value = !(data & 2);
1240 break;
1241 case V4L2_CID_GAIN:
1242 data = reg_read(client, RJ54N1_Y_GAIN);
1243 if (data < 0)
1244 return -EIO;
1245
1246 ctrl->value = data / 2;
1247 break;
1248 case V4L2_CID_AUTO_WHITE_BALANCE:
1249 ctrl->value = rj54n1->auto_wb;
1250 break;
1251 }
1252
1253 return 0;
1254 }
1255
1256 static int rj54n1_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
1257 {
1258 int data;
1259 struct i2c_client *client = v4l2_get_subdevdata(sd);
1260 struct rj54n1 *rj54n1 = to_rj54n1(client);
1261 const struct v4l2_queryctrl *qctrl;
1262
1263 qctrl = soc_camera_find_qctrl(&rj54n1_ops, ctrl->id);
1264 if (!qctrl)
1265 return -EINVAL;
1266
1267 switch (ctrl->id) {
1268 case V4L2_CID_VFLIP:
1269 if (ctrl->value)
1270 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 1);
1271 else
1272 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 1, 1);
1273 if (data < 0)
1274 return -EIO;
1275 break;
1276 case V4L2_CID_HFLIP:
1277 if (ctrl->value)
1278 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 2);
1279 else
1280 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 2, 2);
1281 if (data < 0)
1282 return -EIO;
1283 break;
1284 case V4L2_CID_GAIN:
1285 if (ctrl->value > qctrl->maximum ||
1286 ctrl->value < qctrl->minimum)
1287 return -EINVAL;
1288 else if (reg_write(client, RJ54N1_Y_GAIN, ctrl->value * 2) < 0)
1289 return -EIO;
1290 break;
1291 case V4L2_CID_AUTO_WHITE_BALANCE:
1292 /* Auto WB area - whole image */
1293 if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, ctrl->value << 7,
1294 0x80) < 0)
1295 return -EIO;
1296 rj54n1->auto_wb = ctrl->value;
1297 break;
1298 }
1299
1300 return 0;
1301 }
1302
1303 static struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = {
1304 .g_ctrl = rj54n1_g_ctrl,
1305 .s_ctrl = rj54n1_s_ctrl,
1306 .g_chip_ident = rj54n1_g_chip_ident,
1307 #ifdef CONFIG_VIDEO_ADV_DEBUG
1308 .g_register = rj54n1_g_register,
1309 .s_register = rj54n1_s_register,
1310 #endif
1311 };
1312
1313 static int rj54n1_g_mbus_config(struct v4l2_subdev *sd,
1314 struct v4l2_mbus_config *cfg)
1315 {
1316 struct i2c_client *client = v4l2_get_subdevdata(sd);
1317 struct soc_camera_device *icd = client->dev.platform_data;
1318 struct soc_camera_link *icl = to_soc_camera_link(icd);
1319
1320 cfg->flags =
1321 V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING |
1322 V4L2_MBUS_MASTER | V4L2_MBUS_DATA_ACTIVE_HIGH |
1323 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH;
1324 cfg->type = V4L2_MBUS_PARALLEL;
1325 cfg->flags = soc_camera_apply_board_flags(icl, cfg);
1326
1327 return 0;
1328 }
1329
1330 static int rj54n1_s_mbus_config(struct v4l2_subdev *sd,
1331 const struct v4l2_mbus_config *cfg)
1332 {
1333 struct i2c_client *client = v4l2_get_subdevdata(sd);
1334 struct soc_camera_device *icd = client->dev.platform_data;
1335 struct soc_camera_link *icl = to_soc_camera_link(icd);
1336
1337 /* Figures 2.5-1 to 2.5-3 - default falling pixclk edge */
1338 if (soc_camera_apply_board_flags(icl, cfg) &
1339 V4L2_MBUS_PCLK_SAMPLE_RISING)
1340 return reg_write(client, RJ54N1_OUT_SIGPO, 1 << 4);
1341 else
1342 return reg_write(client, RJ54N1_OUT_SIGPO, 0);
1343 }
1344
1345 static struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = {
1346 .s_stream = rj54n1_s_stream,
1347 .s_mbus_fmt = rj54n1_s_fmt,
1348 .g_mbus_fmt = rj54n1_g_fmt,
1349 .try_mbus_fmt = rj54n1_try_fmt,
1350 .enum_mbus_fmt = rj54n1_enum_fmt,
1351 .g_crop = rj54n1_g_crop,
1352 .s_crop = rj54n1_s_crop,
1353 .cropcap = rj54n1_cropcap,
1354 .g_mbus_config = rj54n1_g_mbus_config,
1355 .s_mbus_config = rj54n1_s_mbus_config,
1356 };
1357
1358 static struct v4l2_subdev_ops rj54n1_subdev_ops = {
1359 .core = &rj54n1_subdev_core_ops,
1360 .video = &rj54n1_subdev_video_ops,
1361 };
1362
1363 /*
1364 * Interface active, can use i2c. If it fails, it can indeed mean, that
1365 * this wasn't our capture interface, so, we wait for the right one
1366 */
1367 static int rj54n1_video_probe(struct soc_camera_device *icd,
1368 struct i2c_client *client,
1369 struct rj54n1_pdata *priv)
1370 {
1371 int data1, data2;
1372 int ret;
1373
1374 /* We must have a parent by now. And it cannot be a wrong one. */
1375 BUG_ON(!icd->parent ||
1376 to_soc_camera_host(icd->parent)->nr != icd->iface);
1377
1378 /* Read out the chip version register */
1379 data1 = reg_read(client, RJ54N1_DEV_CODE);
1380 data2 = reg_read(client, RJ54N1_DEV_CODE2);
1381
1382 if (data1 != 0x51 || data2 != 0x10) {
1383 ret = -ENODEV;
1384 dev_info(&client->dev, "No RJ54N1CB0C found, read 0x%x:0x%x\n",
1385 data1, data2);
1386 goto ei2c;
1387 }
1388
1389 /* Configure IOCTL polarity from the platform data: 0 or 1 << 7. */
1390 ret = reg_write(client, RJ54N1_IOC, priv->ioctl_high << 7);
1391 if (ret < 0)
1392 goto ei2c;
1393
1394 dev_info(&client->dev, "Detected a RJ54N1CB0C chip ID 0x%x:0x%x\n",
1395 data1, data2);
1396
1397 ei2c:
1398 return ret;
1399 }
1400
1401 static int rj54n1_probe(struct i2c_client *client,
1402 const struct i2c_device_id *did)
1403 {
1404 struct rj54n1 *rj54n1;
1405 struct soc_camera_device *icd = client->dev.platform_data;
1406 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1407 struct soc_camera_link *icl;
1408 struct rj54n1_pdata *rj54n1_priv;
1409 int ret;
1410
1411 if (!icd) {
1412 dev_err(&client->dev, "RJ54N1CB0C: missing soc-camera data!\n");
1413 return -EINVAL;
1414 }
1415
1416 icl = to_soc_camera_link(icd);
1417 if (!icl || !icl->priv) {
1418 dev_err(&client->dev, "RJ54N1CB0C: missing platform data!\n");
1419 return -EINVAL;
1420 }
1421
1422 rj54n1_priv = icl->priv;
1423
1424 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1425 dev_warn(&adapter->dev,
1426 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
1427 return -EIO;
1428 }
1429
1430 rj54n1 = kzalloc(sizeof(struct rj54n1), GFP_KERNEL);
1431 if (!rj54n1)
1432 return -ENOMEM;
1433
1434 v4l2_i2c_subdev_init(&rj54n1->subdev, client, &rj54n1_subdev_ops);
1435
1436 icd->ops = &rj54n1_ops;
1437
1438 rj54n1->clk_div = clk_div;
1439 rj54n1->rect.left = RJ54N1_COLUMN_SKIP;
1440 rj54n1->rect.top = RJ54N1_ROW_SKIP;
1441 rj54n1->rect.width = RJ54N1_MAX_WIDTH;
1442 rj54n1->rect.height = RJ54N1_MAX_HEIGHT;
1443 rj54n1->width = RJ54N1_MAX_WIDTH;
1444 rj54n1->height = RJ54N1_MAX_HEIGHT;
1445 rj54n1->fmt = &rj54n1_colour_fmts[0];
1446 rj54n1->resize = 1024;
1447 rj54n1->tgclk_mhz = (rj54n1_priv->mclk_freq / PLL_L * PLL_N) /
1448 (clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1);
1449
1450 ret = rj54n1_video_probe(icd, client, rj54n1_priv);
1451 if (ret < 0) {
1452 icd->ops = NULL;
1453 kfree(rj54n1);
1454 return ret;
1455 }
1456
1457 return ret;
1458 }
1459
1460 static int rj54n1_remove(struct i2c_client *client)
1461 {
1462 struct rj54n1 *rj54n1 = to_rj54n1(client);
1463 struct soc_camera_device *icd = client->dev.platform_data;
1464 struct soc_camera_link *icl = to_soc_camera_link(icd);
1465
1466 icd->ops = NULL;
1467 if (icl->free_bus)
1468 icl->free_bus(icl);
1469 kfree(rj54n1);
1470
1471 return 0;
1472 }
1473
1474 static const struct i2c_device_id rj54n1_id[] = {
1475 { "rj54n1cb0c", 0 },
1476 { }
1477 };
1478 MODULE_DEVICE_TABLE(i2c, rj54n1_id);
1479
1480 static struct i2c_driver rj54n1_i2c_driver = {
1481 .driver = {
1482 .name = "rj54n1cb0c",
1483 },
1484 .probe = rj54n1_probe,
1485 .remove = rj54n1_remove,
1486 .id_table = rj54n1_id,
1487 };
1488
1489 static int __init rj54n1_mod_init(void)
1490 {
1491 return i2c_add_driver(&rj54n1_i2c_driver);
1492 }
1493
1494 static void __exit rj54n1_mod_exit(void)
1495 {
1496 i2c_del_driver(&rj54n1_i2c_driver);
1497 }
1498
1499 module_init(rj54n1_mod_init);
1500 module_exit(rj54n1_mod_exit);
1501
1502 MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver");
1503 MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
1504 MODULE_LICENSE("GPL v2");