?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux 2.6.34-rc3
[pohmelfs.git] / drivers / media / video / rj54n1cb0c.c
blob9277194cd8213d667071d14e56e7cc2664f75dfb
1 /*
2 * Driver for RJ54N1CB0C CMOS Image Sensor from Micron
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_LE, V4L2_COLORSPACE_JPEG},
131 {V4L2_MBUS_FMT_YVYU8_2X8_LE, 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, int index,
485 enum v4l2_mbus_pixelcode *code)
486 {
487 if ((unsigned int)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 = sd->priv;
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_bus_param(struct soc_camera_device *icd,
503 unsigned long flags)
504 {
505 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
506 struct i2c_client *client = sd->priv;
507 /* Figures 2.5-1 to 2.5-3 - default falling pixclk edge */
508
509 if (flags & SOCAM_PCLK_SAMPLE_RISING)
510 return reg_write(client, RJ54N1_OUT_SIGPO, 1 << 4);
511 else
512 return reg_write(client, RJ54N1_OUT_SIGPO, 0);
513 }
514
515 static unsigned long rj54n1_query_bus_param(struct soc_camera_device *icd)
516 {
517 struct soc_camera_link *icl = to_soc_camera_link(icd);
518 const unsigned long flags =
519 SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING |
520 SOCAM_MASTER | SOCAM_DATAWIDTH_8 |
521 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
522 SOCAM_DATA_ACTIVE_HIGH;
523
524 return soc_camera_apply_sensor_flags(icl, flags);
525 }
526
527 static int rj54n1_set_rect(struct i2c_client *client,
528 u16 reg_x, u16 reg_y, u16 reg_xy,
529 u32 width, u32 height)
530 {
531 int ret;
532
533 ret = reg_write(client, reg_xy,
534 ((width >> 4) & 0x70) |
535 ((height >> 8) & 7));
536
537 if (!ret)
538 ret = reg_write(client, reg_x, width & 0xff);
539 if (!ret)
540 ret = reg_write(client, reg_y, height & 0xff);
541
542 return ret;
543 }
544
545 /*
546 * Some commands, specifically certain initialisation sequences, require
547 * a commit operation.
548 */
549 static int rj54n1_commit(struct i2c_client *client)
550 {
551 int ret = reg_write(client, RJ54N1_INIT_START, 1);
552 msleep(10);
553 if (!ret)
554 ret = reg_write(client, RJ54N1_INIT_START, 0);
555 return ret;
556 }
557
558 static int rj54n1_sensor_scale(struct v4l2_subdev *sd, u32 *in_w, u32 *in_h,
559 u32 *out_w, u32 *out_h);
560
561 static int rj54n1_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
562 {
563 struct i2c_client *client = sd->priv;
564 struct rj54n1 *rj54n1 = to_rj54n1(client);
565 struct v4l2_rect *rect = &a->c;
566 unsigned int dummy = 0, output_w, output_h,
567 input_w = rect->width, input_h = rect->height;
568 int ret;
569
570 /* arbitrary minimum width and height, edges unimportant */
571 soc_camera_limit_side(&dummy, &input_w,
572 RJ54N1_COLUMN_SKIP, 8, RJ54N1_MAX_WIDTH);
573
574 soc_camera_limit_side(&dummy, &input_h,
575 RJ54N1_ROW_SKIP, 8, RJ54N1_MAX_HEIGHT);
576
577 output_w = (input_w * 1024 + rj54n1->resize / 2) / rj54n1->resize;
578 output_h = (input_h * 1024 + rj54n1->resize / 2) / rj54n1->resize;
579
580 dev_dbg(&client->dev, "Scaling for %ux%u : %u = %ux%u\n",
581 input_w, input_h, rj54n1->resize, output_w, output_h);
582
583 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);
584 if (ret < 0)
585 return ret;
586
587 rj54n1->width = output_w;
588 rj54n1->height = output_h;
589 rj54n1->resize = ret;
590 rj54n1->rect.width = input_w;
591 rj54n1->rect.height = input_h;
592
593 return 0;
594 }
595
596 static int rj54n1_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
597 {
598 struct i2c_client *client = sd->priv;
599 struct rj54n1 *rj54n1 = to_rj54n1(client);
600
601 a->c = rj54n1->rect;
602 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
603
604 return 0;
605 }
606
607 static int rj54n1_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
608 {
609 a->bounds.left = RJ54N1_COLUMN_SKIP;
610 a->bounds.top = RJ54N1_ROW_SKIP;
611 a->bounds.width = RJ54N1_MAX_WIDTH;
612 a->bounds.height = RJ54N1_MAX_HEIGHT;
613 a->defrect = a->bounds;
614 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
615 a->pixelaspect.numerator = 1;
616 a->pixelaspect.denominator = 1;
617
618 return 0;
619 }
620
621 static int rj54n1_g_fmt(struct v4l2_subdev *sd,
622 struct v4l2_mbus_framefmt *mf)
623 {
624 struct i2c_client *client = sd->priv;
625 struct rj54n1 *rj54n1 = to_rj54n1(client);
626
627 mf->code = rj54n1->fmt->code;
628 mf->colorspace = rj54n1->fmt->colorspace;
629 mf->field = V4L2_FIELD_NONE;
630 mf->width = rj54n1->width;
631 mf->height = rj54n1->height;
632
633 return 0;
634 }
635
636 /*
637 * The actual geometry configuration routine. It scales the input window into
638 * the output one, updates the window sizes and returns an error or the resize
639 * coefficient on success. Note: we only use the "Fixed Scaling" on this camera.
640 */
641 static int rj54n1_sensor_scale(struct v4l2_subdev *sd, u32 *in_w, u32 *in_h,
642 u32 *out_w, u32 *out_h)
643 {
644 struct i2c_client *client = sd->priv;
645 struct rj54n1 *rj54n1 = to_rj54n1(client);
646 unsigned int skip, resize, input_w = *in_w, input_h = *in_h,
647 output_w = *out_w, output_h = *out_h;
648 u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom;
649 unsigned int peak, peak_50, peak_60;
650 int ret;
651
652 /*
653 * We have a problem with crops, where the window is larger than 512x384
654 * and output window is larger than a half of the input one. In this
655 * case we have to either reduce the input window to equal or below
656 * 512x384 or the output window to equal or below 1/2 of the input.
657 */
658 if (output_w > max(512U, input_w / 2)) {
659 if (2 * output_w > RJ54N1_MAX_WIDTH) {
660 input_w = RJ54N1_MAX_WIDTH;
661 output_w = RJ54N1_MAX_WIDTH / 2;
662 } else {
663 input_w = output_w * 2;
664 }
665
666 dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n",
667 input_w, output_w);
668 }
669
670 if (output_h > max(384U, input_h / 2)) {
671 if (2 * output_h > RJ54N1_MAX_HEIGHT) {
672 input_h = RJ54N1_MAX_HEIGHT;
673 output_h = RJ54N1_MAX_HEIGHT / 2;
674 } else {
675 input_h = output_h * 2;
676 }
677
678 dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n",
679 input_h, output_h);
680 }
681
682 /* Idea: use the read mode for snapshots, handle separate geometries */
683 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L,
684 RJ54N1_Y_OUTPUT_SIZE_S_L,
685 RJ54N1_XY_OUTPUT_SIZE_S_H, output_w, output_h);
686 if (!ret)
687 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L,
688 RJ54N1_Y_OUTPUT_SIZE_P_L,
689 RJ54N1_XY_OUTPUT_SIZE_P_H, output_w, output_h);
690
691 if (ret < 0)
692 return ret;
693
694 if (output_w > input_w && output_h > input_h) {
695 input_w = output_w;
696 input_h = output_h;
697
698 resize = 1024;
699 } else {
700 unsigned int resize_x, resize_y;
701 resize_x = (input_w * 1024 + output_w / 2) / output_w;
702 resize_y = (input_h * 1024 + output_h / 2) / output_h;
703
704 /* We want max(resize_x, resize_y), check if it still fits */
705 if (resize_x > resize_y &&
706 (output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT)
707 resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) /
708 output_h;
709 else if (resize_y > resize_x &&
710 (output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH)
711 resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) /
712 output_w;
713 else
714 resize = max(resize_x, resize_y);
715
716 /* Prohibited value ranges */
717 switch (resize) {
718 case 2040 ... 2047:
719 resize = 2039;
720 break;
721 case 4080 ... 4095:
722 resize = 4079;
723 break;
724 case 8160 ... 8191:
725 resize = 8159;
726 break;
727 case 16320 ... 16384:
728 resize = 16319;
729 }
730 }
731
732 /* Set scaling */
733 ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, resize & 0xff);
734 if (!ret)
735 ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, resize >> 8);
736
737 if (ret < 0)
738 return ret;
739
740 /*
741 * Configure a skipping bitmask. The sensor will select a skipping value
742 * among set bits automatically. This is very unclear in the datasheet
743 * too. I was told, in this register one enables all skipping values,
744 * that are required for a specific resize, and the camera selects
745 * automatically, which ones to use. But it is unclear how to identify,
746 * which cropping values are needed. Secondly, why don't we just set all
747 * bits and let the camera choose? Would it increase processing time and
748 * reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to
749 * improve the image quality or stability for larger frames (see comment
750 * above), but I didn't check the framerate.
751 */
752 skip = min(resize / 1024, (unsigned)15);
753
754 inc_sel = 1 << skip;
755
756 if (inc_sel <= 2)
757 inc_sel = 0xc;
758 else if (resize & 1023 && skip < 15)
759 inc_sel |= 1 << (skip + 1);
760
761 ret = reg_write(client, RJ54N1_INC_USE_SEL_L, inc_sel & 0xfc);
762 if (!ret)
763 ret = reg_write(client, RJ54N1_INC_USE_SEL_H, inc_sel >> 8);
764
765 if (!rj54n1->auto_wb) {
766 /* Auto white balance window */
767 wb_left = output_w / 16;
768 wb_right = (3 * output_w / 4 - 3) / 4;
769 wb_top = output_h / 16;
770 wb_bottom = (3 * output_h / 4 - 3) / 4;
771 wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) |
772 ((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1);
773
774 if (!ret)
775 ret = reg_write(client, RJ54N1_BIT8_WB, wb_bit8);
776 if (!ret)
777 ret = reg_write(client, RJ54N1_HCAPS_WB, wb_left);
778 if (!ret)
779 ret = reg_write(client, RJ54N1_VCAPS_WB, wb_top);
780 if (!ret)
781 ret = reg_write(client, RJ54N1_HCAPE_WB, wb_right);
782 if (!ret)
783 ret = reg_write(client, RJ54N1_VCAPE_WB, wb_bottom);
784 }
785
786 /* Antiflicker */
787 peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz /
788 10000;
789 peak_50 = peak / 6;
790 peak_60 = peak / 5;
791
792 if (!ret)
793 ret = reg_write(client, RJ54N1_PEAK_H,
794 ((peak_50 >> 4) & 0xf0) | (peak_60 >> 8));
795 if (!ret)
796 ret = reg_write(client, RJ54N1_PEAK_50, peak_50);
797 if (!ret)
798 ret = reg_write(client, RJ54N1_PEAK_60, peak_60);
799 if (!ret)
800 ret = reg_write(client, RJ54N1_PEAK_DIFF, peak / 150);
801
802 /* Start resizing */
803 if (!ret)
804 ret = reg_write(client, RJ54N1_RESIZE_CONTROL,
805 RESIZE_HOLD_SEL | RESIZE_GO | 1);
806
807 if (ret < 0)
808 return ret;
809
810 /* Constant taken from manufacturer's example */
811 msleep(230);
812
813 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1);
814 if (ret < 0)
815 return ret;
816
817 *in_w = (output_w * resize + 512) / 1024;
818 *in_h = (output_h * resize + 512) / 1024;
819 *out_w = output_w;
820 *out_h = output_h;
821
822 dev_dbg(&client->dev, "Scaled for %ux%u : %u = %ux%u, skip %u\n",
823 *in_w, *in_h, resize, output_w, output_h, skip);
824
825 return resize;
826 }
827
828 static int rj54n1_set_clock(struct i2c_client *client)
829 {
830 struct rj54n1 *rj54n1 = to_rj54n1(client);
831 int ret;
832
833 /* Enable external clock */
834 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY);
835 /* Leave stand-by. Note: use this when implementing suspend / resume */
836 if (!ret)
837 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK);
838
839 if (!ret)
840 ret = reg_write(client, RJ54N1_PLL_L, PLL_L);
841 if (!ret)
842 ret = reg_write(client, RJ54N1_PLL_N, PLL_N);
843
844 /* TGCLK dividers */
845 if (!ret)
846 ret = reg_write(client, RJ54N1_RATIO_TG,
847 rj54n1->clk_div.ratio_tg);
848 if (!ret)
849 ret = reg_write(client, RJ54N1_RATIO_T,
850 rj54n1->clk_div.ratio_t);
851 if (!ret)
852 ret = reg_write(client, RJ54N1_RATIO_R,
853 rj54n1->clk_div.ratio_r);
854
855 /* Enable TGCLK & RAMP */
856 if (!ret)
857 ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, 3);
858
859 /* Disable clock output */
860 if (!ret)
861 ret = reg_write(client, RJ54N1_OCLK_DSP, 0);
862
863 /* Set divisors */
864 if (!ret)
865 ret = reg_write(client, RJ54N1_RATIO_OP,
866 rj54n1->clk_div.ratio_op);
867 if (!ret)
868 ret = reg_write(client, RJ54N1_RATIO_O,
869 rj54n1->clk_div.ratio_o);
870
871 /* Enable OCLK */
872 if (!ret)
873 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);
874
875 /* Use PLL for Timing Generator, write 2 to reserved bits */
876 if (!ret)
877 ret = reg_write(client, RJ54N1_TG_BYPASS, 2);
878
879 /* Take sensor out of reset */
880 if (!ret)
881 ret = reg_write(client, RJ54N1_RESET_STANDBY,
882 E_EXCLK | SEN_RSTX);
883 /* Enable PLL */
884 if (!ret)
885 ret = reg_write(client, RJ54N1_PLL_EN, 1);
886
887 /* Wait for PLL to stabilise */
888 msleep(10);
889
890 /* Enable clock to frequency divider */
891 if (!ret)
892 ret = reg_write(client, RJ54N1_CLK_RST, 1);
893
894 if (!ret)
895 ret = reg_read(client, RJ54N1_CLK_RST);
896 if (ret != 1) {
897 dev_err(&client->dev,
898 "Resetting RJ54N1CB0C clock failed: %d!\n", ret);
899 return -EIO;
900 }
901
902 /* Start the PLL */
903 ret = reg_set(client, RJ54N1_OCLK_DSP, 1, 1);
904
905 /* Enable OCLK */
906 if (!ret)
907 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);
908
909 return ret;
910 }
911
912 static int rj54n1_reg_init(struct i2c_client *client)
913 {
914 struct rj54n1 *rj54n1 = to_rj54n1(client);
915 int ret = rj54n1_set_clock(client);
916
917 if (!ret)
918 ret = reg_write_multiple(client, bank_7, ARRAY_SIZE(bank_7));
919 if (!ret)
920 ret = reg_write_multiple(client, bank_10, ARRAY_SIZE(bank_10));
921
922 /* Set binning divisors */
923 if (!ret)
924 ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, 3 | (7 << 4));
925 if (!ret)
926 ret = reg_write(client, RJ54N1_SCALE_4_LEV, 0xf);
927
928 /* Switch to fixed resize mode */
929 if (!ret)
930 ret = reg_write(client, RJ54N1_RESIZE_CONTROL,
931 RESIZE_HOLD_SEL | 1);
932
933 /* Set gain */
934 if (!ret)
935 ret = reg_write(client, RJ54N1_Y_GAIN, 0x84);
936
937 /*
938 * Mirror the image back: default is upside down and left-to-right...
939 * Set manual preview / still shot switching
940 */
941 if (!ret)
942 ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, 0x27);
943
944 if (!ret)
945 ret = reg_write_multiple(client, bank_4, ARRAY_SIZE(bank_4));
946
947 /* Auto exposure area */
948 if (!ret)
949 ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, 0x80);
950 /* Check current auto WB config */
951 if (!ret)
952 ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I);
953 if (ret >= 0) {
954 rj54n1->auto_wb = ret & 0x80;
955 ret = reg_write_multiple(client, bank_5, ARRAY_SIZE(bank_5));
956 }
957 if (!ret)
958 ret = reg_write_multiple(client, bank_8, ARRAY_SIZE(bank_8));
959
960 if (!ret)
961 ret = reg_write(client, RJ54N1_RESET_STANDBY,
962 E_EXCLK | DSP_RSTX | SEN_RSTX);
963
964 /* Commit init */
965 if (!ret)
966 ret = rj54n1_commit(client);
967
968 /* Take DSP, TG, sensor out of reset */
969 if (!ret)
970 ret = reg_write(client, RJ54N1_RESET_STANDBY,
971 E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX);
972
973 /* Start register update? Same register as 0x?FE in many bank_* sets */
974 if (!ret)
975 ret = reg_write(client, RJ54N1_FWFLG, 2);
976
977 /* Constant taken from manufacturer's example */
978 msleep(700);
979
980 return ret;
981 }
982
983 static int rj54n1_try_fmt(struct v4l2_subdev *sd,
984 struct v4l2_mbus_framefmt *mf)
985 {
986 struct i2c_client *client = sd->priv;
987 struct rj54n1 *rj54n1 = to_rj54n1(client);
988 const struct rj54n1_datafmt *fmt;
989 int align = mf->code == V4L2_MBUS_FMT_SBGGR10_1X10 ||
990 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE ||
991 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE ||
992 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE ||
993 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE;
994
995 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n",
996 __func__, mf->code, mf->width, mf->height);
997
998 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,
999 ARRAY_SIZE(rj54n1_colour_fmts));
1000 if (!fmt) {
1001 fmt = rj54n1->fmt;
1002 mf->code = fmt->code;
1003 }
1004
1005 mf->field = V4L2_FIELD_NONE;
1006 mf->colorspace = fmt->colorspace;
1007
1008 v4l_bound_align_image(&mf->width, 112, RJ54N1_MAX_WIDTH, align,
1009 &mf->height, 84, RJ54N1_MAX_HEIGHT, align, 0);
1010
1011 return 0;
1012 }
1013
1014 static int rj54n1_s_fmt(struct v4l2_subdev *sd,
1015 struct v4l2_mbus_framefmt *mf)
1016 {
1017 struct i2c_client *client = sd->priv;
1018 struct rj54n1 *rj54n1 = to_rj54n1(client);
1019 const struct rj54n1_datafmt *fmt;
1020 unsigned int output_w, output_h, max_w, max_h,
1021 input_w = rj54n1->rect.width, input_h = rj54n1->rect.height;
1022 int ret;
1023
1024 /*
1025 * The host driver can call us without .try_fmt(), so, we have to take
1026 * care ourseleves
1027 */
1028 rj54n1_try_fmt(sd, mf);
1029
1030 /*
1031 * Verify if the sensor has just been powered on. TODO: replace this
1032 * with proper PM, when a suitable API is available.
1033 */
1034 ret = reg_read(client, RJ54N1_RESET_STANDBY);
1035 if (ret < 0)
1036 return ret;
1037
1038 if (!(ret & E_EXCLK)) {
1039 ret = rj54n1_reg_init(client);
1040 if (ret < 0)
1041 return ret;
1042 }
1043
1044 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n",
1045 __func__, mf->code, mf->width, mf->height);
1046
1047 /* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */
1048 switch (mf->code) {
1049 case V4L2_MBUS_FMT_YUYV8_2X8_LE:
1050 ret = reg_write(client, RJ54N1_OUT_SEL, 0);
1051 if (!ret)
1052 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1053 break;
1054 case V4L2_MBUS_FMT_YVYU8_2X8_LE:
1055 ret = reg_write(client, RJ54N1_OUT_SEL, 0);
1056 if (!ret)
1057 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1058 break;
1059 case V4L2_MBUS_FMT_RGB565_2X8_LE:
1060 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);
1061 if (!ret)
1062 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1063 break;
1064 case V4L2_MBUS_FMT_RGB565_2X8_BE:
1065 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);
1066 if (!ret)
1067 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1068 break;
1069 case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE:
1070 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1071 if (!ret)
1072 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1073 if (!ret)
1074 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);
1075 break;
1076 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
1077 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1078 if (!ret)
1079 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1080 if (!ret)
1081 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);
1082 break;
1083 case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE:
1084 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1085 if (!ret)
1086 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1087 if (!ret)
1088 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);
1089 break;
1090 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE:
1091 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1092 if (!ret)
1093 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1094 if (!ret)
1095 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);
1096 break;
1097 case V4L2_MBUS_FMT_SBGGR10_1X10:
1098 ret = reg_write(client, RJ54N1_OUT_SEL, 5);
1099 break;
1100 default:
1101 ret = -EINVAL;
1102 }
1103
1104 /* Special case: a raw mode with 10 bits of data per clock tick */
1105 if (!ret)
1106 ret = reg_set(client, RJ54N1_OCLK_SEL_EN,
1107 (mf->code == V4L2_MBUS_FMT_SBGGR10_1X10) << 1, 2);
1108
1109 if (ret < 0)
1110 return ret;
1111
1112 /* Supported scales 1:1 >= scale > 1:16 */
1113 max_w = mf->width * (16 * 1024 - 1) / 1024;
1114 if (input_w > max_w)
1115 input_w = max_w;
1116 max_h = mf->height * (16 * 1024 - 1) / 1024;
1117 if (input_h > max_h)
1118 input_h = max_h;
1119
1120 output_w = mf->width;
1121 output_h = mf->height;
1122
1123 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);
1124 if (ret < 0)
1125 return ret;
1126
1127 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,
1128 ARRAY_SIZE(rj54n1_colour_fmts));
1129
1130 rj54n1->fmt = fmt;
1131 rj54n1->resize = ret;
1132 rj54n1->rect.width = input_w;
1133 rj54n1->rect.height = input_h;
1134 rj54n1->width = output_w;
1135 rj54n1->height = output_h;
1136
1137 mf->width = output_w;
1138 mf->height = output_h;
1139 mf->field = V4L2_FIELD_NONE;
1140 mf->colorspace = fmt->colorspace;
1141
1142 return 0;
1143 }
1144
1145 static int rj54n1_g_chip_ident(struct v4l2_subdev *sd,
1146 struct v4l2_dbg_chip_ident *id)
1147 {
1148 struct i2c_client *client = sd->priv;
1149
1150 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
1151 return -EINVAL;
1152
1153 if (id->match.addr != client->addr)
1154 return -ENODEV;
1155
1156 id->ident = V4L2_IDENT_RJ54N1CB0C;
1157 id->revision = 0;
1158
1159 return 0;
1160 }
1161
1162 #ifdef CONFIG_VIDEO_ADV_DEBUG
1163 static int rj54n1_g_register(struct v4l2_subdev *sd,
1164 struct v4l2_dbg_register *reg)
1165 {
1166 struct i2c_client *client = sd->priv;
1167
1168 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR ||
1169 reg->reg < 0x400 || reg->reg > 0x1fff)
1170 /* Registers > 0x0800 are only available from Sharp support */
1171 return -EINVAL;
1172
1173 if (reg->match.addr != client->addr)
1174 return -ENODEV;
1175
1176 reg->size = 1;
1177 reg->val = reg_read(client, reg->reg);
1178
1179 if (reg->val > 0xff)
1180 return -EIO;
1181
1182 return 0;
1183 }
1184
1185 static int rj54n1_s_register(struct v4l2_subdev *sd,
1186 struct v4l2_dbg_register *reg)
1187 {
1188 struct i2c_client *client = sd->priv;
1189
1190 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR ||
1191 reg->reg < 0x400 || reg->reg > 0x1fff)
1192 /* Registers >= 0x0800 are only available from Sharp support */
1193 return -EINVAL;
1194
1195 if (reg->match.addr != client->addr)
1196 return -ENODEV;
1197
1198 if (reg_write(client, reg->reg, reg->val) < 0)
1199 return -EIO;
1200
1201 return 0;
1202 }
1203 #endif
1204
1205 static const struct v4l2_queryctrl rj54n1_controls[] = {
1206 {
1207 .id = V4L2_CID_VFLIP,
1208 .type = V4L2_CTRL_TYPE_BOOLEAN,
1209 .name = "Flip Vertically",
1210 .minimum = 0,
1211 .maximum = 1,
1212 .step = 1,
1213 .default_value = 0,
1214 }, {
1215 .id = V4L2_CID_HFLIP,
1216 .type = V4L2_CTRL_TYPE_BOOLEAN,
1217 .name = "Flip Horizontally",
1218 .minimum = 0,
1219 .maximum = 1,
1220 .step = 1,
1221 .default_value = 0,
1222 }, {
1223 .id = V4L2_CID_GAIN,
1224 .type = V4L2_CTRL_TYPE_INTEGER,
1225 .name = "Gain",
1226 .minimum = 0,
1227 .maximum = 127,
1228 .step = 1,
1229 .default_value = 66,
1230 .flags = V4L2_CTRL_FLAG_SLIDER,
1231 }, {
1232 .id = V4L2_CID_AUTO_WHITE_BALANCE,
1233 .type = V4L2_CTRL_TYPE_BOOLEAN,
1234 .name = "Auto white balance",
1235 .minimum = 0,
1236 .maximum = 1,
1237 .step = 1,
1238 .default_value = 1,
1239 },
1240 };
1241
1242 static struct soc_camera_ops rj54n1_ops = {
1243 .set_bus_param = rj54n1_set_bus_param,
1244 .query_bus_param = rj54n1_query_bus_param,
1245 .controls = rj54n1_controls,
1246 .num_controls = ARRAY_SIZE(rj54n1_controls),
1247 };
1248
1249 static int rj54n1_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
1250 {
1251 struct i2c_client *client = sd->priv;
1252 struct rj54n1 *rj54n1 = to_rj54n1(client);
1253 int data;
1254
1255 switch (ctrl->id) {
1256 case V4L2_CID_VFLIP:
1257 data = reg_read(client, RJ54N1_MIRROR_STILL_MODE);
1258 if (data < 0)
1259 return -EIO;
1260 ctrl->value = !(data & 1);
1261 break;
1262 case V4L2_CID_HFLIP:
1263 data = reg_read(client, RJ54N1_MIRROR_STILL_MODE);
1264 if (data < 0)
1265 return -EIO;
1266 ctrl->value = !(data & 2);
1267 break;
1268 case V4L2_CID_GAIN:
1269 data = reg_read(client, RJ54N1_Y_GAIN);
1270 if (data < 0)
1271 return -EIO;
1272
1273 ctrl->value = data / 2;
1274 break;
1275 case V4L2_CID_AUTO_WHITE_BALANCE:
1276 ctrl->value = rj54n1->auto_wb;
1277 break;
1278 }
1279
1280 return 0;
1281 }
1282
1283 static int rj54n1_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
1284 {
1285 int data;
1286 struct i2c_client *client = sd->priv;
1287 struct rj54n1 *rj54n1 = to_rj54n1(client);
1288 const struct v4l2_queryctrl *qctrl;
1289
1290 qctrl = soc_camera_find_qctrl(&rj54n1_ops, ctrl->id);
1291 if (!qctrl)
1292 return -EINVAL;
1293
1294 switch (ctrl->id) {
1295 case V4L2_CID_VFLIP:
1296 if (ctrl->value)
1297 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 1);
1298 else
1299 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 1, 1);
1300 if (data < 0)
1301 return -EIO;
1302 break;
1303 case V4L2_CID_HFLIP:
1304 if (ctrl->value)
1305 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 2);
1306 else
1307 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 2, 2);
1308 if (data < 0)
1309 return -EIO;
1310 break;
1311 case V4L2_CID_GAIN:
1312 if (ctrl->value > qctrl->maximum ||
1313 ctrl->value < qctrl->minimum)
1314 return -EINVAL;
1315 else if (reg_write(client, RJ54N1_Y_GAIN, ctrl->value * 2) < 0)
1316 return -EIO;
1317 break;
1318 case V4L2_CID_AUTO_WHITE_BALANCE:
1319 /* Auto WB area - whole image */
1320 if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, ctrl->value << 7,
1321 0x80) < 0)
1322 return -EIO;
1323 rj54n1->auto_wb = ctrl->value;
1324 break;
1325 }
1326
1327 return 0;
1328 }
1329
1330 static struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = {
1331 .g_ctrl = rj54n1_g_ctrl,
1332 .s_ctrl = rj54n1_s_ctrl,
1333 .g_chip_ident = rj54n1_g_chip_ident,
1334 #ifdef CONFIG_VIDEO_ADV_DEBUG
1335 .g_register = rj54n1_g_register,
1336 .s_register = rj54n1_s_register,
1337 #endif
1338 };
1339
1340 static struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = {
1341 .s_stream = rj54n1_s_stream,
1342 .s_mbus_fmt = rj54n1_s_fmt,
1343 .g_mbus_fmt = rj54n1_g_fmt,
1344 .try_mbus_fmt = rj54n1_try_fmt,
1345 .enum_mbus_fmt = rj54n1_enum_fmt,
1346 .g_crop = rj54n1_g_crop,
1347 .s_crop = rj54n1_s_crop,
1348 .cropcap = rj54n1_cropcap,
1349 };
1350
1351 static struct v4l2_subdev_ops rj54n1_subdev_ops = {
1352 .core = &rj54n1_subdev_core_ops,
1353 .video = &rj54n1_subdev_video_ops,
1354 };
1355
1356 /*
1357 * Interface active, can use i2c. If it fails, it can indeed mean, that
1358 * this wasn't our capture interface, so, we wait for the right one
1359 */
1360 static int rj54n1_video_probe(struct soc_camera_device *icd,
1361 struct i2c_client *client,
1362 struct rj54n1_pdata *priv)
1363 {
1364 int data1, data2;
1365 int ret;
1366
1367 /* This could be a BUG_ON() or a WARN_ON(), or remove it completely */
1368 if (!icd->dev.parent ||
1369 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
1370 return -ENODEV;
1371
1372 /* Read out the chip version register */
1373 data1 = reg_read(client, RJ54N1_DEV_CODE);
1374 data2 = reg_read(client, RJ54N1_DEV_CODE2);
1375
1376 if (data1 != 0x51 || data2 != 0x10) {
1377 ret = -ENODEV;
1378 dev_info(&client->dev, "No RJ54N1CB0C found, read 0x%x:0x%x\n",
1379 data1, data2);
1380 goto ei2c;
1381 }
1382
1383 /* Configure IOCTL polarity from the platform data: 0 or 1 << 7. */
1384 ret = reg_write(client, RJ54N1_IOC, priv->ioctl_high << 7);
1385 if (ret < 0)
1386 goto ei2c;
1387
1388 dev_info(&client->dev, "Detected a RJ54N1CB0C chip ID 0x%x:0x%x\n",
1389 data1, data2);
1390
1391 ei2c:
1392 return ret;
1393 }
1394
1395 static int rj54n1_probe(struct i2c_client *client,
1396 const struct i2c_device_id *did)
1397 {
1398 struct rj54n1 *rj54n1;
1399 struct soc_camera_device *icd = client->dev.platform_data;
1400 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1401 struct soc_camera_link *icl;
1402 struct rj54n1_pdata *rj54n1_priv;
1403 int ret;
1404
1405 if (!icd) {
1406 dev_err(&client->dev, "RJ54N1CB0C: missing soc-camera data!\n");
1407 return -EINVAL;
1408 }
1409
1410 icl = to_soc_camera_link(icd);
1411 if (!icl || !icl->priv) {
1412 dev_err(&client->dev, "RJ54N1CB0C: missing platform data!\n");
1413 return -EINVAL;
1414 }
1415
1416 rj54n1_priv = icl->priv;
1417
1418 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1419 dev_warn(&adapter->dev,
1420 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
1421 return -EIO;
1422 }
1423
1424 rj54n1 = kzalloc(sizeof(struct rj54n1), GFP_KERNEL);
1425 if (!rj54n1)
1426 return -ENOMEM;
1427
1428 v4l2_i2c_subdev_init(&rj54n1->subdev, client, &rj54n1_subdev_ops);
1429
1430 icd->ops = &rj54n1_ops;
1431
1432 rj54n1->clk_div = clk_div;
1433 rj54n1->rect.left = RJ54N1_COLUMN_SKIP;
1434 rj54n1->rect.top = RJ54N1_ROW_SKIP;
1435 rj54n1->rect.width = RJ54N1_MAX_WIDTH;
1436 rj54n1->rect.height = RJ54N1_MAX_HEIGHT;
1437 rj54n1->width = RJ54N1_MAX_WIDTH;
1438 rj54n1->height = RJ54N1_MAX_HEIGHT;
1439 rj54n1->fmt = &rj54n1_colour_fmts[0];
1440 rj54n1->resize = 1024;
1441 rj54n1->tgclk_mhz = (rj54n1_priv->mclk_freq / PLL_L * PLL_N) /
1442 (clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1);
1443
1444 ret = rj54n1_video_probe(icd, client, rj54n1_priv);
1445 if (ret < 0) {
1446 icd->ops = NULL;
1447 i2c_set_clientdata(client, NULL);
1448 kfree(rj54n1);
1449 return ret;
1450 }
1451
1452 return ret;
1453 }
1454
1455 static int rj54n1_remove(struct i2c_client *client)
1456 {
1457 struct rj54n1 *rj54n1 = to_rj54n1(client);
1458 struct soc_camera_device *icd = client->dev.platform_data;
1459 struct soc_camera_link *icl = to_soc_camera_link(icd);
1460
1461 icd->ops = NULL;
1462 if (icl->free_bus)
1463 icl->free_bus(icl);
1464 i2c_set_clientdata(client, NULL);
1465 client->driver = NULL;
1466 kfree(rj54n1);
1467
1468 return 0;
1469 }
1470
1471 static const struct i2c_device_id rj54n1_id[] = {
1472 { "rj54n1cb0c", 0 },
1473 { }
1474 };
1475 MODULE_DEVICE_TABLE(i2c, rj54n1_id);
1476
1477 static struct i2c_driver rj54n1_i2c_driver = {
1478 .driver = {
1479 .name = "rj54n1cb0c",
1480 },
1481 .probe = rj54n1_probe,
1482 .remove = rj54n1_remove,
1483 .id_table = rj54n1_id,
1484 };
1485
1486 static int __init rj54n1_mod_init(void)
1487 {
1488 return i2c_add_driver(&rj54n1_i2c_driver);
1489 }
1490
1491 static void __exit rj54n1_mod_exit(void)
1492 {
1493 i2c_del_driver(&rj54n1_i2c_driver);
1494 }
1495
1496 module_init(rj54n1_mod_init);
1497 module_exit(rj54n1_mod_exit);
1498
1499 MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver");
1500 MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
1501 MODULE_LICENSE("GPL v2");