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/v4l2-mediabus.h>
15 #include <linux/videodev2.h>
16 #include <linux/module.h>
17
18 #include <media/rj54n1cb0c.h>
19 #include <media/soc_camera.h>
20 #include <media/v4l2-clk.h>
21 #include <media/v4l2-subdev.h>
22 #include <media/v4l2-ctrls.h>
23
24 #define RJ54N1_DEV_CODE 0x0400
25 #define RJ54N1_DEV_CODE2 0x0401
26 #define RJ54N1_OUT_SEL 0x0403
27 #define RJ54N1_XY_OUTPUT_SIZE_S_H 0x0404
28 #define RJ54N1_X_OUTPUT_SIZE_S_L 0x0405
29 #define RJ54N1_Y_OUTPUT_SIZE_S_L 0x0406
30 #define RJ54N1_XY_OUTPUT_SIZE_P_H 0x0407
31 #define RJ54N1_X_OUTPUT_SIZE_P_L 0x0408
32 #define RJ54N1_Y_OUTPUT_SIZE_P_L 0x0409
33 #define RJ54N1_LINE_LENGTH_PCK_S_H 0x040a
34 #define RJ54N1_LINE_LENGTH_PCK_S_L 0x040b
35 #define RJ54N1_LINE_LENGTH_PCK_P_H 0x040c
36 #define RJ54N1_LINE_LENGTH_PCK_P_L 0x040d
37 #define RJ54N1_RESIZE_N 0x040e
38 #define RJ54N1_RESIZE_N_STEP 0x040f
39 #define RJ54N1_RESIZE_STEP 0x0410
40 #define RJ54N1_RESIZE_HOLD_H 0x0411
41 #define RJ54N1_RESIZE_HOLD_L 0x0412
42 #define RJ54N1_H_OBEN_OFS 0x0413
43 #define RJ54N1_V_OBEN_OFS 0x0414
44 #define RJ54N1_RESIZE_CONTROL 0x0415
45 #define RJ54N1_STILL_CONTROL 0x0417
46 #define RJ54N1_INC_USE_SEL_H 0x0425
47 #define RJ54N1_INC_USE_SEL_L 0x0426
48 #define RJ54N1_MIRROR_STILL_MODE 0x0427
49 #define RJ54N1_INIT_START 0x0428
50 #define RJ54N1_SCALE_1_2_LEV 0x0429
51 #define RJ54N1_SCALE_4_LEV 0x042a
52 #define RJ54N1_Y_GAIN 0x04d8
53 #define RJ54N1_APT_GAIN_UP 0x04fa
54 #define RJ54N1_RA_SEL_UL 0x0530
55 #define RJ54N1_BYTE_SWAP 0x0531
56 #define RJ54N1_OUT_SIGPO 0x053b
57 #define RJ54N1_WB_SEL_WEIGHT_I 0x054e
58 #define RJ54N1_BIT8_WB 0x0569
59 #define RJ54N1_HCAPS_WB 0x056a
60 #define RJ54N1_VCAPS_WB 0x056b
61 #define RJ54N1_HCAPE_WB 0x056c
62 #define RJ54N1_VCAPE_WB 0x056d
63 #define RJ54N1_EXPOSURE_CONTROL 0x058c
64 #define RJ54N1_FRAME_LENGTH_S_H 0x0595
65 #define RJ54N1_FRAME_LENGTH_S_L 0x0596
66 #define RJ54N1_FRAME_LENGTH_P_H 0x0597
67 #define RJ54N1_FRAME_LENGTH_P_L 0x0598
68 #define RJ54N1_PEAK_H 0x05b7
69 #define RJ54N1_PEAK_50 0x05b8
70 #define RJ54N1_PEAK_60 0x05b9
71 #define RJ54N1_PEAK_DIFF 0x05ba
72 #define RJ54N1_IOC 0x05ef
73 #define RJ54N1_TG_BYPASS 0x0700
74 #define RJ54N1_PLL_L 0x0701
75 #define RJ54N1_PLL_N 0x0702
76 #define RJ54N1_PLL_EN 0x0704
77 #define RJ54N1_RATIO_TG 0x0706
78 #define RJ54N1_RATIO_T 0x0707
79 #define RJ54N1_RATIO_R 0x0708
80 #define RJ54N1_RAMP_TGCLK_EN 0x0709
81 #define RJ54N1_OCLK_DSP 0x0710
82 #define RJ54N1_RATIO_OP 0x0711
83 #define RJ54N1_RATIO_O 0x0712
84 #define RJ54N1_OCLK_SEL_EN 0x0713
85 #define RJ54N1_CLK_RST 0x0717
86 #define RJ54N1_RESET_STANDBY 0x0718
87 #define RJ54N1_FWFLG 0x07fe
88
89 #define E_EXCLK (1 << 7)
90 #define SOFT_STDBY (1 << 4)
91 #define SEN_RSTX (1 << 2)
92 #define TG_RSTX (1 << 1)
93 #define DSP_RSTX (1 << 0)
94
95 #define RESIZE_HOLD_SEL (1 << 2)
96 #define RESIZE_GO (1 << 1)
97
98 /*
99 * When cropping, the camera automatically centers the cropped region, there
100 * doesn't seem to be a way to specify an explicit location of the rectangle.
101 */
102 #define RJ54N1_COLUMN_SKIP 0
103 #define RJ54N1_ROW_SKIP 0
104 #define RJ54N1_MAX_WIDTH 1600
105 #define RJ54N1_MAX_HEIGHT 1200
106
107 #define PLL_L 2
108 #define PLL_N 0x31
109
110 /* I2C addresses: 0x50, 0x51, 0x60, 0x61 */
111
112 /* RJ54N1CB0C has only one fixed colorspace per pixelcode */
113 struct rj54n1_datafmt {
114 u32 code;
115 enum v4l2_colorspace colorspace;
116 };
117
118 /* Find a data format by a pixel code in an array */
rj54n1_find_datafmt(u32 code,const struct rj54n1_datafmt * fmt,int n)119 static const struct rj54n1_datafmt *rj54n1_find_datafmt(
120 u32 code, const struct rj54n1_datafmt *fmt,
121 int n)
122 {
123 int i;
124 for (i = 0; i < n; i++)
125 if (fmt[i].code == code)
126 return fmt + i;
127
128 return NULL;
129 }
130
131 static const struct rj54n1_datafmt rj54n1_colour_fmts[] = {
132 {MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
133 {MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
134 {MEDIA_BUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
135 {MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
136 {MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
137 {MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE, V4L2_COLORSPACE_SRGB},
138 {MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
139 {MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE, V4L2_COLORSPACE_SRGB},
140 {MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB},
141 };
142
143 struct rj54n1_clock_div {
144 u8 ratio_tg; /* can be 0 or an odd number */
145 u8 ratio_t;
146 u8 ratio_r;
147 u8 ratio_op;
148 u8 ratio_o;
149 };
150
151 struct rj54n1 {
152 struct v4l2_subdev subdev;
153 struct v4l2_ctrl_handler hdl;
154 struct v4l2_clk *clk;
155 struct rj54n1_clock_div clk_div;
156 const struct rj54n1_datafmt *fmt;
157 struct v4l2_rect rect; /* Sensor window */
158 unsigned int tgclk_mhz;
159 bool auto_wb;
160 unsigned short width; /* Output window */
161 unsigned short height;
162 unsigned short resize; /* Sensor * 1024 / resize = Output */
163 unsigned short scale;
164 u8 bank;
165 };
166
167 struct rj54n1_reg_val {
168 u16 reg;
169 u8 val;
170 };
171
172 static const struct rj54n1_reg_val bank_4[] = {
173 {0x417, 0},
174 {0x42c, 0},
175 {0x42d, 0xf0},
176 {0x42e, 0},
177 {0x42f, 0x50},
178 {0x430, 0xf5},
179 {0x431, 0x16},
180 {0x432, 0x20},
181 {0x433, 0},
182 {0x434, 0xc8},
183 {0x43c, 8},
184 {0x43e, 0x90},
185 {0x445, 0x83},
186 {0x4ba, 0x58},
187 {0x4bb, 4},
188 {0x4bc, 0x20},
189 {0x4db, 4},
190 {0x4fe, 2},
191 };
192
193 static const struct rj54n1_reg_val bank_5[] = {
194 {0x514, 0},
195 {0x516, 0},
196 {0x518, 0},
197 {0x51a, 0},
198 {0x51d, 0xff},
199 {0x56f, 0x28},
200 {0x575, 0x40},
201 {0x5bc, 0x48},
202 {0x5c1, 6},
203 {0x5e5, 0x11},
204 {0x5e6, 0x43},
205 {0x5e7, 0x33},
206 {0x5e8, 0x21},
207 {0x5e9, 0x30},
208 {0x5ea, 0x0},
209 {0x5eb, 0xa5},
210 {0x5ec, 0xff},
211 {0x5fe, 2},
212 };
213
214 static const struct rj54n1_reg_val bank_7[] = {
215 {0x70a, 0},
216 {0x714, 0xff},
217 {0x715, 0xff},
218 {0x716, 0x1f},
219 {0x7FE, 2},
220 };
221
222 static const struct rj54n1_reg_val bank_8[] = {
223 {0x800, 0x00},
224 {0x801, 0x01},
225 {0x802, 0x61},
226 {0x805, 0x00},
227 {0x806, 0x00},
228 {0x807, 0x00},
229 {0x808, 0x00},
230 {0x809, 0x01},
231 {0x80A, 0x61},
232 {0x80B, 0x00},
233 {0x80C, 0x01},
234 {0x80D, 0x00},
235 {0x80E, 0x00},
236 {0x80F, 0x00},
237 {0x810, 0x00},
238 {0x811, 0x01},
239 {0x812, 0x61},
240 {0x813, 0x00},
241 {0x814, 0x11},
242 {0x815, 0x00},
243 {0x816, 0x41},
244 {0x817, 0x00},
245 {0x818, 0x51},
246 {0x819, 0x01},
247 {0x81A, 0x1F},
248 {0x81B, 0x00},
249 {0x81C, 0x01},
250 {0x81D, 0x00},
251 {0x81E, 0x11},
252 {0x81F, 0x00},
253 {0x820, 0x41},
254 {0x821, 0x00},
255 {0x822, 0x51},
256 {0x823, 0x00},
257 {0x824, 0x00},
258 {0x825, 0x00},
259 {0x826, 0x47},
260 {0x827, 0x01},
261 {0x828, 0x4F},
262 {0x829, 0x00},
263 {0x82A, 0x00},
264 {0x82B, 0x00},
265 {0x82C, 0x30},
266 {0x82D, 0x00},
267 {0x82E, 0x40},
268 {0x82F, 0x00},
269 {0x830, 0xB3},
270 {0x831, 0x00},
271 {0x832, 0xE3},
272 {0x833, 0x00},
273 {0x834, 0x00},
274 {0x835, 0x00},
275 {0x836, 0x00},
276 {0x837, 0x00},
277 {0x838, 0x00},
278 {0x839, 0x01},
279 {0x83A, 0x61},
280 {0x83B, 0x00},
281 {0x83C, 0x01},
282 {0x83D, 0x00},
283 {0x83E, 0x00},
284 {0x83F, 0x00},
285 {0x840, 0x00},
286 {0x841, 0x01},
287 {0x842, 0x61},
288 {0x843, 0x00},
289 {0x844, 0x1D},
290 {0x845, 0x00},
291 {0x846, 0x00},
292 {0x847, 0x00},
293 {0x848, 0x00},
294 {0x849, 0x01},
295 {0x84A, 0x1F},
296 {0x84B, 0x00},
297 {0x84C, 0x05},
298 {0x84D, 0x00},
299 {0x84E, 0x19},
300 {0x84F, 0x01},
301 {0x850, 0x21},
302 {0x851, 0x01},
303 {0x852, 0x5D},
304 {0x853, 0x00},
305 {0x854, 0x00},
306 {0x855, 0x00},
307 {0x856, 0x19},
308 {0x857, 0x01},
309 {0x858, 0x21},
310 {0x859, 0x00},
311 {0x85A, 0x00},
312 {0x85B, 0x00},
313 {0x85C, 0x00},
314 {0x85D, 0x00},
315 {0x85E, 0x00},
316 {0x85F, 0x00},
317 {0x860, 0xB3},
318 {0x861, 0x00},
319 {0x862, 0xE3},
320 {0x863, 0x00},
321 {0x864, 0x00},
322 {0x865, 0x00},
323 {0x866, 0x00},
324 {0x867, 0x00},
325 {0x868, 0x00},
326 {0x869, 0xE2},
327 {0x86A, 0x00},
328 {0x86B, 0x01},
329 {0x86C, 0x06},
330 {0x86D, 0x00},
331 {0x86E, 0x00},
332 {0x86F, 0x00},
333 {0x870, 0x60},
334 {0x871, 0x8C},
335 {0x872, 0x10},
336 {0x873, 0x00},
337 {0x874, 0xE0},
338 {0x875, 0x00},
339 {0x876, 0x27},
340 {0x877, 0x01},
341 {0x878, 0x00},
342 {0x879, 0x00},
343 {0x87A, 0x00},
344 {0x87B, 0x03},
345 {0x87C, 0x00},
346 {0x87D, 0x00},
347 {0x87E, 0x00},
348 {0x87F, 0x00},
349 {0x880, 0x00},
350 {0x881, 0x00},
351 {0x882, 0x00},
352 {0x883, 0x00},
353 {0x884, 0x00},
354 {0x885, 0x00},
355 {0x886, 0xF8},
356 {0x887, 0x00},
357 {0x888, 0x03},
358 {0x889, 0x00},
359 {0x88A, 0x64},
360 {0x88B, 0x00},
361 {0x88C, 0x03},
362 {0x88D, 0x00},
363 {0x88E, 0xB1},
364 {0x88F, 0x00},
365 {0x890, 0x03},
366 {0x891, 0x01},
367 {0x892, 0x1D},
368 {0x893, 0x00},
369 {0x894, 0x03},
370 {0x895, 0x01},
371 {0x896, 0x4B},
372 {0x897, 0x00},
373 {0x898, 0xE5},
374 {0x899, 0x00},
375 {0x89A, 0x01},
376 {0x89B, 0x00},
377 {0x89C, 0x01},
378 {0x89D, 0x04},
379 {0x89E, 0xC8},
380 {0x89F, 0x00},
381 {0x8A0, 0x01},
382 {0x8A1, 0x01},
383 {0x8A2, 0x61},
384 {0x8A3, 0x00},
385 {0x8A4, 0x01},
386 {0x8A5, 0x00},
387 {0x8A6, 0x00},
388 {0x8A7, 0x00},
389 {0x8A8, 0x00},
390 {0x8A9, 0x00},
391 {0x8AA, 0x7F},
392 {0x8AB, 0x03},
393 {0x8AC, 0x00},
394 {0x8AD, 0x00},
395 {0x8AE, 0x00},
396 {0x8AF, 0x00},
397 {0x8B0, 0x00},
398 {0x8B1, 0x00},
399 {0x8B6, 0x00},
400 {0x8B7, 0x01},
401 {0x8B8, 0x00},
402 {0x8B9, 0x00},
403 {0x8BA, 0x02},
404 {0x8BB, 0x00},
405 {0x8BC, 0xFF},
406 {0x8BD, 0x00},
407 {0x8FE, 2},
408 };
409
410 static const struct rj54n1_reg_val bank_10[] = {
411 {0x10bf, 0x69}
412 };
413
414 /* Clock dividers - these are default register values, divider = register + 1 */
415 static const struct rj54n1_clock_div clk_div = {
416 .ratio_tg = 3 /* default: 5 */,
417 .ratio_t = 4 /* default: 1 */,
418 .ratio_r = 4 /* default: 0 */,
419 .ratio_op = 1 /* default: 5 */,
420 .ratio_o = 9 /* default: 0 */,
421 };
422
to_rj54n1(const struct i2c_client * client)423 static struct rj54n1 *to_rj54n1(const struct i2c_client *client)
424 {
425 return container_of(i2c_get_clientdata(client), struct rj54n1, subdev);
426 }
427
reg_read(struct i2c_client * client,const u16 reg)428 static int reg_read(struct i2c_client *client, const u16 reg)
429 {
430 struct rj54n1 *rj54n1 = to_rj54n1(client);
431 int ret;
432
433 /* set bank */
434 if (rj54n1->bank != reg >> 8) {
435 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8);
436 ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8);
437 if (ret < 0)
438 return ret;
439 rj54n1->bank = reg >> 8;
440 }
441 return i2c_smbus_read_byte_data(client, reg & 0xff);
442 }
443
reg_write(struct i2c_client * client,const u16 reg,const u8 data)444 static int reg_write(struct i2c_client *client, const u16 reg,
445 const u8 data)
446 {
447 struct rj54n1 *rj54n1 = to_rj54n1(client);
448 int ret;
449
450 /* set bank */
451 if (rj54n1->bank != reg >> 8) {
452 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8);
453 ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8);
454 if (ret < 0)
455 return ret;
456 rj54n1->bank = reg >> 8;
457 }
458 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", reg & 0xff, data);
459 return i2c_smbus_write_byte_data(client, reg & 0xff, data);
460 }
461
reg_set(struct i2c_client * client,const u16 reg,const u8 data,const u8 mask)462 static int reg_set(struct i2c_client *client, const u16 reg,
463 const u8 data, const u8 mask)
464 {
465 int ret;
466
467 ret = reg_read(client, reg);
468 if (ret < 0)
469 return ret;
470 return reg_write(client, reg, (ret & ~mask) | (data & mask));
471 }
472
reg_write_multiple(struct i2c_client * client,const struct rj54n1_reg_val * rv,const int n)473 static int reg_write_multiple(struct i2c_client *client,
474 const struct rj54n1_reg_val *rv, const int n)
475 {
476 int i, ret;
477
478 for (i = 0; i < n; i++) {
479 ret = reg_write(client, rv->reg, rv->val);
480 if (ret < 0)
481 return ret;
482 rv++;
483 }
484
485 return 0;
486 }
487
rj54n1_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_mbus_code_enum * code)488 static int rj54n1_enum_mbus_code(struct v4l2_subdev *sd,
489 struct v4l2_subdev_pad_config *cfg,
490 struct v4l2_subdev_mbus_code_enum *code)
491 {
492 if (code->pad || code->index >= ARRAY_SIZE(rj54n1_colour_fmts))
493 return -EINVAL;
494
495 code->code = rj54n1_colour_fmts[code->index].code;
496 return 0;
497 }
498
rj54n1_s_stream(struct v4l2_subdev * sd,int enable)499 static int rj54n1_s_stream(struct v4l2_subdev *sd, int enable)
500 {
501 struct i2c_client *client = v4l2_get_subdevdata(sd);
502
503 /* Switch between preview and still shot modes */
504 return reg_set(client, RJ54N1_STILL_CONTROL, (!enable) << 7, 0x80);
505 }
506
rj54n1_set_rect(struct i2c_client * client,u16 reg_x,u16 reg_y,u16 reg_xy,u32 width,u32 height)507 static int rj54n1_set_rect(struct i2c_client *client,
508 u16 reg_x, u16 reg_y, u16 reg_xy,
509 u32 width, u32 height)
510 {
511 int ret;
512
513 ret = reg_write(client, reg_xy,
514 ((width >> 4) & 0x70) |
515 ((height >> 8) & 7));
516
517 if (!ret)
518 ret = reg_write(client, reg_x, width & 0xff);
519 if (!ret)
520 ret = reg_write(client, reg_y, height & 0xff);
521
522 return ret;
523 }
524
525 /*
526 * Some commands, specifically certain initialisation sequences, require
527 * a commit operation.
528 */
rj54n1_commit(struct i2c_client * client)529 static int rj54n1_commit(struct i2c_client *client)
530 {
531 int ret = reg_write(client, RJ54N1_INIT_START, 1);
532 msleep(10);
533 if (!ret)
534 ret = reg_write(client, RJ54N1_INIT_START, 0);
535 return ret;
536 }
537
538 static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h,
539 s32 *out_w, s32 *out_h);
540
rj54n1_s_crop(struct v4l2_subdev * sd,const struct v4l2_crop * a)541 static int rj54n1_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a)
542 {
543 struct i2c_client *client = v4l2_get_subdevdata(sd);
544 struct rj54n1 *rj54n1 = to_rj54n1(client);
545 const struct v4l2_rect *rect = &a->c;
546 int dummy = 0, output_w, output_h,
547 input_w = rect->width, input_h = rect->height;
548 int ret;
549
550 /* arbitrary minimum width and height, edges unimportant */
551 soc_camera_limit_side(&dummy, &input_w,
552 RJ54N1_COLUMN_SKIP, 8, RJ54N1_MAX_WIDTH);
553
554 soc_camera_limit_side(&dummy, &input_h,
555 RJ54N1_ROW_SKIP, 8, RJ54N1_MAX_HEIGHT);
556
557 output_w = (input_w * 1024 + rj54n1->resize / 2) / rj54n1->resize;
558 output_h = (input_h * 1024 + rj54n1->resize / 2) / rj54n1->resize;
559
560 dev_dbg(&client->dev, "Scaling for %dx%d : %u = %dx%d\n",
561 input_w, input_h, rj54n1->resize, output_w, output_h);
562
563 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);
564 if (ret < 0)
565 return ret;
566
567 rj54n1->width = output_w;
568 rj54n1->height = output_h;
569 rj54n1->resize = ret;
570 rj54n1->rect.width = input_w;
571 rj54n1->rect.height = input_h;
572
573 return 0;
574 }
575
rj54n1_g_crop(struct v4l2_subdev * sd,struct v4l2_crop * a)576 static int rj54n1_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
577 {
578 struct i2c_client *client = v4l2_get_subdevdata(sd);
579 struct rj54n1 *rj54n1 = to_rj54n1(client);
580
581 a->c = rj54n1->rect;
582 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
583
584 return 0;
585 }
586
rj54n1_cropcap(struct v4l2_subdev * sd,struct v4l2_cropcap * a)587 static int rj54n1_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
588 {
589 a->bounds.left = RJ54N1_COLUMN_SKIP;
590 a->bounds.top = RJ54N1_ROW_SKIP;
591 a->bounds.width = RJ54N1_MAX_WIDTH;
592 a->bounds.height = RJ54N1_MAX_HEIGHT;
593 a->defrect = a->bounds;
594 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
595 a->pixelaspect.numerator = 1;
596 a->pixelaspect.denominator = 1;
597
598 return 0;
599 }
600
rj54n1_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * format)601 static int rj54n1_get_fmt(struct v4l2_subdev *sd,
602 struct v4l2_subdev_pad_config *cfg,
603 struct v4l2_subdev_format *format)
604 {
605 struct v4l2_mbus_framefmt *mf = &format->format;
606 struct i2c_client *client = v4l2_get_subdevdata(sd);
607 struct rj54n1 *rj54n1 = to_rj54n1(client);
608
609 if (format->pad)
610 return -EINVAL;
611
612 mf->code = rj54n1->fmt->code;
613 mf->colorspace = rj54n1->fmt->colorspace;
614 mf->field = V4L2_FIELD_NONE;
615 mf->width = rj54n1->width;
616 mf->height = rj54n1->height;
617
618 return 0;
619 }
620
621 /*
622 * The actual geometry configuration routine. It scales the input window into
623 * the output one, updates the window sizes and returns an error or the resize
624 * coefficient on success. Note: we only use the "Fixed Scaling" on this camera.
625 */
rj54n1_sensor_scale(struct v4l2_subdev * sd,s32 * in_w,s32 * in_h,s32 * out_w,s32 * out_h)626 static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h,
627 s32 *out_w, s32 *out_h)
628 {
629 struct i2c_client *client = v4l2_get_subdevdata(sd);
630 struct rj54n1 *rj54n1 = to_rj54n1(client);
631 unsigned int skip, resize, input_w = *in_w, input_h = *in_h,
632 output_w = *out_w, output_h = *out_h;
633 u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom;
634 unsigned int peak, peak_50, peak_60;
635 int ret;
636
637 /*
638 * We have a problem with crops, where the window is larger than 512x384
639 * and output window is larger than a half of the input one. In this
640 * case we have to either reduce the input window to equal or below
641 * 512x384 or the output window to equal or below 1/2 of the input.
642 */
643 if (output_w > max(512U, input_w / 2)) {
644 if (2 * output_w > RJ54N1_MAX_WIDTH) {
645 input_w = RJ54N1_MAX_WIDTH;
646 output_w = RJ54N1_MAX_WIDTH / 2;
647 } else {
648 input_w = output_w * 2;
649 }
650
651 dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n",
652 input_w, output_w);
653 }
654
655 if (output_h > max(384U, input_h / 2)) {
656 if (2 * output_h > RJ54N1_MAX_HEIGHT) {
657 input_h = RJ54N1_MAX_HEIGHT;
658 output_h = RJ54N1_MAX_HEIGHT / 2;
659 } else {
660 input_h = output_h * 2;
661 }
662
663 dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n",
664 input_h, output_h);
665 }
666
667 /* Idea: use the read mode for snapshots, handle separate geometries */
668 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L,
669 RJ54N1_Y_OUTPUT_SIZE_S_L,
670 RJ54N1_XY_OUTPUT_SIZE_S_H, output_w, output_h);
671 if (!ret)
672 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L,
673 RJ54N1_Y_OUTPUT_SIZE_P_L,
674 RJ54N1_XY_OUTPUT_SIZE_P_H, output_w, output_h);
675
676 if (ret < 0)
677 return ret;
678
679 if (output_w > input_w && output_h > input_h) {
680 input_w = output_w;
681 input_h = output_h;
682
683 resize = 1024;
684 } else {
685 unsigned int resize_x, resize_y;
686 resize_x = (input_w * 1024 + output_w / 2) / output_w;
687 resize_y = (input_h * 1024 + output_h / 2) / output_h;
688
689 /* We want max(resize_x, resize_y), check if it still fits */
690 if (resize_x > resize_y &&
691 (output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT)
692 resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) /
693 output_h;
694 else if (resize_y > resize_x &&
695 (output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH)
696 resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) /
697 output_w;
698 else
699 resize = max(resize_x, resize_y);
700
701 /* Prohibited value ranges */
702 switch (resize) {
703 case 2040 ... 2047:
704 resize = 2039;
705 break;
706 case 4080 ... 4095:
707 resize = 4079;
708 break;
709 case 8160 ... 8191:
710 resize = 8159;
711 break;
712 case 16320 ... 16384:
713 resize = 16319;
714 }
715 }
716
717 /* Set scaling */
718 ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, resize & 0xff);
719 if (!ret)
720 ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, resize >> 8);
721
722 if (ret < 0)
723 return ret;
724
725 /*
726 * Configure a skipping bitmask. The sensor will select a skipping value
727 * among set bits automatically. This is very unclear in the datasheet
728 * too. I was told, in this register one enables all skipping values,
729 * that are required for a specific resize, and the camera selects
730 * automatically, which ones to use. But it is unclear how to identify,
731 * which cropping values are needed. Secondly, why don't we just set all
732 * bits and let the camera choose? Would it increase processing time and
733 * reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to
734 * improve the image quality or stability for larger frames (see comment
735 * above), but I didn't check the framerate.
736 */
737 skip = min(resize / 1024, 15U);
738
739 inc_sel = 1 << skip;
740
741 if (inc_sel <= 2)
742 inc_sel = 0xc;
743 else if (resize & 1023 && skip < 15)
744 inc_sel |= 1 << (skip + 1);
745
746 ret = reg_write(client, RJ54N1_INC_USE_SEL_L, inc_sel & 0xfc);
747 if (!ret)
748 ret = reg_write(client, RJ54N1_INC_USE_SEL_H, inc_sel >> 8);
749
750 if (!rj54n1->auto_wb) {
751 /* Auto white balance window */
752 wb_left = output_w / 16;
753 wb_right = (3 * output_w / 4 - 3) / 4;
754 wb_top = output_h / 16;
755 wb_bottom = (3 * output_h / 4 - 3) / 4;
756 wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) |
757 ((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1);
758
759 if (!ret)
760 ret = reg_write(client, RJ54N1_BIT8_WB, wb_bit8);
761 if (!ret)
762 ret = reg_write(client, RJ54N1_HCAPS_WB, wb_left);
763 if (!ret)
764 ret = reg_write(client, RJ54N1_VCAPS_WB, wb_top);
765 if (!ret)
766 ret = reg_write(client, RJ54N1_HCAPE_WB, wb_right);
767 if (!ret)
768 ret = reg_write(client, RJ54N1_VCAPE_WB, wb_bottom);
769 }
770
771 /* Antiflicker */
772 peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz /
773 10000;
774 peak_50 = peak / 6;
775 peak_60 = peak / 5;
776
777 if (!ret)
778 ret = reg_write(client, RJ54N1_PEAK_H,
779 ((peak_50 >> 4) & 0xf0) | (peak_60 >> 8));
780 if (!ret)
781 ret = reg_write(client, RJ54N1_PEAK_50, peak_50);
782 if (!ret)
783 ret = reg_write(client, RJ54N1_PEAK_60, peak_60);
784 if (!ret)
785 ret = reg_write(client, RJ54N1_PEAK_DIFF, peak / 150);
786
787 /* Start resizing */
788 if (!ret)
789 ret = reg_write(client, RJ54N1_RESIZE_CONTROL,
790 RESIZE_HOLD_SEL | RESIZE_GO | 1);
791
792 if (ret < 0)
793 return ret;
794
795 /* Constant taken from manufacturer's example */
796 msleep(230);
797
798 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1);
799 if (ret < 0)
800 return ret;
801
802 *in_w = (output_w * resize + 512) / 1024;
803 *in_h = (output_h * resize + 512) / 1024;
804 *out_w = output_w;
805 *out_h = output_h;
806
807 dev_dbg(&client->dev, "Scaled for %dx%d : %u = %ux%u, skip %u\n",
808 *in_w, *in_h, resize, output_w, output_h, skip);
809
810 return resize;
811 }
812
rj54n1_set_clock(struct i2c_client * client)813 static int rj54n1_set_clock(struct i2c_client *client)
814 {
815 struct rj54n1 *rj54n1 = to_rj54n1(client);
816 int ret;
817
818 /* Enable external clock */
819 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY);
820 /* Leave stand-by. Note: use this when implementing suspend / resume */
821 if (!ret)
822 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK);
823
824 if (!ret)
825 ret = reg_write(client, RJ54N1_PLL_L, PLL_L);
826 if (!ret)
827 ret = reg_write(client, RJ54N1_PLL_N, PLL_N);
828
829 /* TGCLK dividers */
830 if (!ret)
831 ret = reg_write(client, RJ54N1_RATIO_TG,
832 rj54n1->clk_div.ratio_tg);
833 if (!ret)
834 ret = reg_write(client, RJ54N1_RATIO_T,
835 rj54n1->clk_div.ratio_t);
836 if (!ret)
837 ret = reg_write(client, RJ54N1_RATIO_R,
838 rj54n1->clk_div.ratio_r);
839
840 /* Enable TGCLK & RAMP */
841 if (!ret)
842 ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, 3);
843
844 /* Disable clock output */
845 if (!ret)
846 ret = reg_write(client, RJ54N1_OCLK_DSP, 0);
847
848 /* Set divisors */
849 if (!ret)
850 ret = reg_write(client, RJ54N1_RATIO_OP,
851 rj54n1->clk_div.ratio_op);
852 if (!ret)
853 ret = reg_write(client, RJ54N1_RATIO_O,
854 rj54n1->clk_div.ratio_o);
855
856 /* Enable OCLK */
857 if (!ret)
858 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);
859
860 /* Use PLL for Timing Generator, write 2 to reserved bits */
861 if (!ret)
862 ret = reg_write(client, RJ54N1_TG_BYPASS, 2);
863
864 /* Take sensor out of reset */
865 if (!ret)
866 ret = reg_write(client, RJ54N1_RESET_STANDBY,
867 E_EXCLK | SEN_RSTX);
868 /* Enable PLL */
869 if (!ret)
870 ret = reg_write(client, RJ54N1_PLL_EN, 1);
871
872 /* Wait for PLL to stabilise */
873 msleep(10);
874
875 /* Enable clock to frequency divider */
876 if (!ret)
877 ret = reg_write(client, RJ54N1_CLK_RST, 1);
878
879 if (!ret)
880 ret = reg_read(client, RJ54N1_CLK_RST);
881 if (ret != 1) {
882 dev_err(&client->dev,
883 "Resetting RJ54N1CB0C clock failed: %d!\n", ret);
884 return -EIO;
885 }
886
887 /* Start the PLL */
888 ret = reg_set(client, RJ54N1_OCLK_DSP, 1, 1);
889
890 /* Enable OCLK */
891 if (!ret)
892 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);
893
894 return ret;
895 }
896
rj54n1_reg_init(struct i2c_client * client)897 static int rj54n1_reg_init(struct i2c_client *client)
898 {
899 struct rj54n1 *rj54n1 = to_rj54n1(client);
900 int ret = rj54n1_set_clock(client);
901
902 if (!ret)
903 ret = reg_write_multiple(client, bank_7, ARRAY_SIZE(bank_7));
904 if (!ret)
905 ret = reg_write_multiple(client, bank_10, ARRAY_SIZE(bank_10));
906
907 /* Set binning divisors */
908 if (!ret)
909 ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, 3 | (7 << 4));
910 if (!ret)
911 ret = reg_write(client, RJ54N1_SCALE_4_LEV, 0xf);
912
913 /* Switch to fixed resize mode */
914 if (!ret)
915 ret = reg_write(client, RJ54N1_RESIZE_CONTROL,
916 RESIZE_HOLD_SEL | 1);
917
918 /* Set gain */
919 if (!ret)
920 ret = reg_write(client, RJ54N1_Y_GAIN, 0x84);
921
922 /*
923 * Mirror the image back: default is upside down and left-to-right...
924 * Set manual preview / still shot switching
925 */
926 if (!ret)
927 ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, 0x27);
928
929 if (!ret)
930 ret = reg_write_multiple(client, bank_4, ARRAY_SIZE(bank_4));
931
932 /* Auto exposure area */
933 if (!ret)
934 ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, 0x80);
935 /* Check current auto WB config */
936 if (!ret)
937 ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I);
938 if (ret >= 0) {
939 rj54n1->auto_wb = ret & 0x80;
940 ret = reg_write_multiple(client, bank_5, ARRAY_SIZE(bank_5));
941 }
942 if (!ret)
943 ret = reg_write_multiple(client, bank_8, ARRAY_SIZE(bank_8));
944
945 if (!ret)
946 ret = reg_write(client, RJ54N1_RESET_STANDBY,
947 E_EXCLK | DSP_RSTX | SEN_RSTX);
948
949 /* Commit init */
950 if (!ret)
951 ret = rj54n1_commit(client);
952
953 /* Take DSP, TG, sensor out of reset */
954 if (!ret)
955 ret = reg_write(client, RJ54N1_RESET_STANDBY,
956 E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX);
957
958 /* Start register update? Same register as 0x?FE in many bank_* sets */
959 if (!ret)
960 ret = reg_write(client, RJ54N1_FWFLG, 2);
961
962 /* Constant taken from manufacturer's example */
963 msleep(700);
964
965 return ret;
966 }
967
rj54n1_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * format)968 static int rj54n1_set_fmt(struct v4l2_subdev *sd,
969 struct v4l2_subdev_pad_config *cfg,
970 struct v4l2_subdev_format *format)
971 {
972 struct v4l2_mbus_framefmt *mf = &format->format;
973 struct i2c_client *client = v4l2_get_subdevdata(sd);
974 struct rj54n1 *rj54n1 = to_rj54n1(client);
975 const struct rj54n1_datafmt *fmt;
976 int output_w, output_h, max_w, max_h,
977 input_w = rj54n1->rect.width, input_h = rj54n1->rect.height;
978 int align = mf->code == MEDIA_BUS_FMT_SBGGR10_1X10 ||
979 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE ||
980 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE ||
981 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE ||
982 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE;
983 int ret;
984
985 if (format->pad)
986 return -EINVAL;
987
988 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n",
989 __func__, mf->code, mf->width, mf->height);
990
991 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,
992 ARRAY_SIZE(rj54n1_colour_fmts));
993 if (!fmt) {
994 fmt = rj54n1->fmt;
995 mf->code = fmt->code;
996 }
997
998 mf->field = V4L2_FIELD_NONE;
999 mf->colorspace = fmt->colorspace;
1000
1001 v4l_bound_align_image(&mf->width, 112, RJ54N1_MAX_WIDTH, align,
1002 &mf->height, 84, RJ54N1_MAX_HEIGHT, align, 0);
1003
1004 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
1005 cfg->try_fmt = *mf;
1006 return 0;
1007 }
1008
1009 /*
1010 * Verify if the sensor has just been powered on. TODO: replace this
1011 * with proper PM, when a suitable API is available.
1012 */
1013 ret = reg_read(client, RJ54N1_RESET_STANDBY);
1014 if (ret < 0)
1015 return ret;
1016
1017 if (!(ret & E_EXCLK)) {
1018 ret = rj54n1_reg_init(client);
1019 if (ret < 0)
1020 return ret;
1021 }
1022
1023 /* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */
1024 switch (mf->code) {
1025 case MEDIA_BUS_FMT_YUYV8_2X8:
1026 ret = reg_write(client, RJ54N1_OUT_SEL, 0);
1027 if (!ret)
1028 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1029 break;
1030 case MEDIA_BUS_FMT_YVYU8_2X8:
1031 ret = reg_write(client, RJ54N1_OUT_SEL, 0);
1032 if (!ret)
1033 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1034 break;
1035 case MEDIA_BUS_FMT_RGB565_2X8_LE:
1036 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);
1037 if (!ret)
1038 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1039 break;
1040 case MEDIA_BUS_FMT_RGB565_2X8_BE:
1041 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);
1042 if (!ret)
1043 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1044 break;
1045 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE:
1046 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1047 if (!ret)
1048 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1049 if (!ret)
1050 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);
1051 break;
1052 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE:
1053 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1054 if (!ret)
1055 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
1056 if (!ret)
1057 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);
1058 break;
1059 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE:
1060 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1061 if (!ret)
1062 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1063 if (!ret)
1064 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);
1065 break;
1066 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE:
1067 ret = reg_write(client, RJ54N1_OUT_SEL, 4);
1068 if (!ret)
1069 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
1070 if (!ret)
1071 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);
1072 break;
1073 case MEDIA_BUS_FMT_SBGGR10_1X10:
1074 ret = reg_write(client, RJ54N1_OUT_SEL, 5);
1075 break;
1076 default:
1077 ret = -EINVAL;
1078 }
1079
1080 /* Special case: a raw mode with 10 bits of data per clock tick */
1081 if (!ret)
1082 ret = reg_set(client, RJ54N1_OCLK_SEL_EN,
1083 (mf->code == MEDIA_BUS_FMT_SBGGR10_1X10) << 1, 2);
1084
1085 if (ret < 0)
1086 return ret;
1087
1088 /* Supported scales 1:1 >= scale > 1:16 */
1089 max_w = mf->width * (16 * 1024 - 1) / 1024;
1090 if (input_w > max_w)
1091 input_w = max_w;
1092 max_h = mf->height * (16 * 1024 - 1) / 1024;
1093 if (input_h > max_h)
1094 input_h = max_h;
1095
1096 output_w = mf->width;
1097 output_h = mf->height;
1098
1099 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);
1100 if (ret < 0)
1101 return ret;
1102
1103 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,
1104 ARRAY_SIZE(rj54n1_colour_fmts));
1105
1106 rj54n1->fmt = fmt;
1107 rj54n1->resize = ret;
1108 rj54n1->rect.width = input_w;
1109 rj54n1->rect.height = input_h;
1110 rj54n1->width = output_w;
1111 rj54n1->height = output_h;
1112
1113 mf->width = output_w;
1114 mf->height = output_h;
1115 mf->field = V4L2_FIELD_NONE;
1116 mf->colorspace = fmt->colorspace;
1117
1118 return 0;
1119 }
1120
1121 #ifdef CONFIG_VIDEO_ADV_DEBUG
rj54n1_g_register(struct v4l2_subdev * sd,struct v4l2_dbg_register * reg)1122 static int rj54n1_g_register(struct v4l2_subdev *sd,
1123 struct v4l2_dbg_register *reg)
1124 {
1125 struct i2c_client *client = v4l2_get_subdevdata(sd);
1126
1127 if (reg->reg < 0x400 || reg->reg > 0x1fff)
1128 /* Registers > 0x0800 are only available from Sharp support */
1129 return -EINVAL;
1130
1131 reg->size = 1;
1132 reg->val = reg_read(client, reg->reg);
1133
1134 if (reg->val > 0xff)
1135 return -EIO;
1136
1137 return 0;
1138 }
1139
rj54n1_s_register(struct v4l2_subdev * sd,const struct v4l2_dbg_register * reg)1140 static int rj54n1_s_register(struct v4l2_subdev *sd,
1141 const struct v4l2_dbg_register *reg)
1142 {
1143 struct i2c_client *client = v4l2_get_subdevdata(sd);
1144
1145 if (reg->reg < 0x400 || reg->reg > 0x1fff)
1146 /* Registers >= 0x0800 are only available from Sharp support */
1147 return -EINVAL;
1148
1149 if (reg_write(client, reg->reg, reg->val) < 0)
1150 return -EIO;
1151
1152 return 0;
1153 }
1154 #endif
1155
rj54n1_s_power(struct v4l2_subdev * sd,int on)1156 static int rj54n1_s_power(struct v4l2_subdev *sd, int on)
1157 {
1158 struct i2c_client *client = v4l2_get_subdevdata(sd);
1159 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
1160 struct rj54n1 *rj54n1 = to_rj54n1(client);
1161
1162 return soc_camera_set_power(&client->dev, ssdd, rj54n1->clk, on);
1163 }
1164
rj54n1_s_ctrl(struct v4l2_ctrl * ctrl)1165 static int rj54n1_s_ctrl(struct v4l2_ctrl *ctrl)
1166 {
1167 struct rj54n1 *rj54n1 = container_of(ctrl->handler, struct rj54n1, hdl);
1168 struct v4l2_subdev *sd = &rj54n1->subdev;
1169 struct i2c_client *client = v4l2_get_subdevdata(sd);
1170 int data;
1171
1172 switch (ctrl->id) {
1173 case V4L2_CID_VFLIP:
1174 if (ctrl->val)
1175 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 1);
1176 else
1177 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 1, 1);
1178 if (data < 0)
1179 return -EIO;
1180 return 0;
1181 case V4L2_CID_HFLIP:
1182 if (ctrl->val)
1183 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 2);
1184 else
1185 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 2, 2);
1186 if (data < 0)
1187 return -EIO;
1188 return 0;
1189 case V4L2_CID_GAIN:
1190 if (reg_write(client, RJ54N1_Y_GAIN, ctrl->val * 2) < 0)
1191 return -EIO;
1192 return 0;
1193 case V4L2_CID_AUTO_WHITE_BALANCE:
1194 /* Auto WB area - whole image */
1195 if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, ctrl->val << 7,
1196 0x80) < 0)
1197 return -EIO;
1198 rj54n1->auto_wb = ctrl->val;
1199 return 0;
1200 }
1201
1202 return -EINVAL;
1203 }
1204
1205 static const struct v4l2_ctrl_ops rj54n1_ctrl_ops = {
1206 .s_ctrl = rj54n1_s_ctrl,
1207 };
1208
1209 static struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = {
1210 #ifdef CONFIG_VIDEO_ADV_DEBUG
1211 .g_register = rj54n1_g_register,
1212 .s_register = rj54n1_s_register,
1213 #endif
1214 .s_power = rj54n1_s_power,
1215 };
1216
rj54n1_g_mbus_config(struct v4l2_subdev * sd,struct v4l2_mbus_config * cfg)1217 static int rj54n1_g_mbus_config(struct v4l2_subdev *sd,
1218 struct v4l2_mbus_config *cfg)
1219 {
1220 struct i2c_client *client = v4l2_get_subdevdata(sd);
1221 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
1222
1223 cfg->flags =
1224 V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING |
1225 V4L2_MBUS_MASTER | V4L2_MBUS_DATA_ACTIVE_HIGH |
1226 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH;
1227 cfg->type = V4L2_MBUS_PARALLEL;
1228 cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
1229
1230 return 0;
1231 }
1232
rj54n1_s_mbus_config(struct v4l2_subdev * sd,const struct v4l2_mbus_config * cfg)1233 static int rj54n1_s_mbus_config(struct v4l2_subdev *sd,
1234 const struct v4l2_mbus_config *cfg)
1235 {
1236 struct i2c_client *client = v4l2_get_subdevdata(sd);
1237 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
1238
1239 /* Figures 2.5-1 to 2.5-3 - default falling pixclk edge */
1240 if (soc_camera_apply_board_flags(ssdd, cfg) &
1241 V4L2_MBUS_PCLK_SAMPLE_RISING)
1242 return reg_write(client, RJ54N1_OUT_SIGPO, 1 << 4);
1243 else
1244 return reg_write(client, RJ54N1_OUT_SIGPO, 0);
1245 }
1246
1247 static struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = {
1248 .s_stream = rj54n1_s_stream,
1249 .g_crop = rj54n1_g_crop,
1250 .s_crop = rj54n1_s_crop,
1251 .cropcap = rj54n1_cropcap,
1252 .g_mbus_config = rj54n1_g_mbus_config,
1253 .s_mbus_config = rj54n1_s_mbus_config,
1254 };
1255
1256 static const struct v4l2_subdev_pad_ops rj54n1_subdev_pad_ops = {
1257 .enum_mbus_code = rj54n1_enum_mbus_code,
1258 .get_fmt = rj54n1_get_fmt,
1259 .set_fmt = rj54n1_set_fmt,
1260 };
1261
1262 static struct v4l2_subdev_ops rj54n1_subdev_ops = {
1263 .core = &rj54n1_subdev_core_ops,
1264 .video = &rj54n1_subdev_video_ops,
1265 .pad = &rj54n1_subdev_pad_ops,
1266 };
1267
1268 /*
1269 * Interface active, can use i2c. If it fails, it can indeed mean, that
1270 * this wasn't our capture interface, so, we wait for the right one
1271 */
rj54n1_video_probe(struct i2c_client * client,struct rj54n1_pdata * priv)1272 static int rj54n1_video_probe(struct i2c_client *client,
1273 struct rj54n1_pdata *priv)
1274 {
1275 struct rj54n1 *rj54n1 = to_rj54n1(client);
1276 int data1, data2;
1277 int ret;
1278
1279 ret = rj54n1_s_power(&rj54n1->subdev, 1);
1280 if (ret < 0)
1281 return ret;
1282
1283 /* Read out the chip version register */
1284 data1 = reg_read(client, RJ54N1_DEV_CODE);
1285 data2 = reg_read(client, RJ54N1_DEV_CODE2);
1286
1287 if (data1 != 0x51 || data2 != 0x10) {
1288 ret = -ENODEV;
1289 dev_info(&client->dev, "No RJ54N1CB0C found, read 0x%x:0x%x\n",
1290 data1, data2);
1291 goto done;
1292 }
1293
1294 /* Configure IOCTL polarity from the platform data: 0 or 1 << 7. */
1295 ret = reg_write(client, RJ54N1_IOC, priv->ioctl_high << 7);
1296 if (ret < 0)
1297 goto done;
1298
1299 dev_info(&client->dev, "Detected a RJ54N1CB0C chip ID 0x%x:0x%x\n",
1300 data1, data2);
1301
1302 ret = v4l2_ctrl_handler_setup(&rj54n1->hdl);
1303
1304 done:
1305 rj54n1_s_power(&rj54n1->subdev, 0);
1306 return ret;
1307 }
1308
rj54n1_probe(struct i2c_client * client,const struct i2c_device_id * did)1309 static int rj54n1_probe(struct i2c_client *client,
1310 const struct i2c_device_id *did)
1311 {
1312 struct rj54n1 *rj54n1;
1313 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
1314 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1315 struct rj54n1_pdata *rj54n1_priv;
1316 int ret;
1317
1318 if (!ssdd || !ssdd->drv_priv) {
1319 dev_err(&client->dev, "RJ54N1CB0C: missing platform data!\n");
1320 return -EINVAL;
1321 }
1322
1323 rj54n1_priv = ssdd->drv_priv;
1324
1325 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1326 dev_warn(&adapter->dev,
1327 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
1328 return -EIO;
1329 }
1330
1331 rj54n1 = devm_kzalloc(&client->dev, sizeof(struct rj54n1), GFP_KERNEL);
1332 if (!rj54n1)
1333 return -ENOMEM;
1334
1335 v4l2_i2c_subdev_init(&rj54n1->subdev, client, &rj54n1_subdev_ops);
1336 v4l2_ctrl_handler_init(&rj54n1->hdl, 4);
1337 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,
1338 V4L2_CID_VFLIP, 0, 1, 1, 0);
1339 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,
1340 V4L2_CID_HFLIP, 0, 1, 1, 0);
1341 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,
1342 V4L2_CID_GAIN, 0, 127, 1, 66);
1343 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,
1344 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
1345 rj54n1->subdev.ctrl_handler = &rj54n1->hdl;
1346 if (rj54n1->hdl.error)
1347 return rj54n1->hdl.error;
1348
1349 rj54n1->clk_div = clk_div;
1350 rj54n1->rect.left = RJ54N1_COLUMN_SKIP;
1351 rj54n1->rect.top = RJ54N1_ROW_SKIP;
1352 rj54n1->rect.width = RJ54N1_MAX_WIDTH;
1353 rj54n1->rect.height = RJ54N1_MAX_HEIGHT;
1354 rj54n1->width = RJ54N1_MAX_WIDTH;
1355 rj54n1->height = RJ54N1_MAX_HEIGHT;
1356 rj54n1->fmt = &rj54n1_colour_fmts[0];
1357 rj54n1->resize = 1024;
1358 rj54n1->tgclk_mhz = (rj54n1_priv->mclk_freq / PLL_L * PLL_N) /
1359 (clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1);
1360
1361 rj54n1->clk = v4l2_clk_get(&client->dev, "mclk");
1362 if (IS_ERR(rj54n1->clk)) {
1363 ret = PTR_ERR(rj54n1->clk);
1364 goto eclkget;
1365 }
1366
1367 ret = rj54n1_video_probe(client, rj54n1_priv);
1368 if (ret < 0) {
1369 v4l2_clk_put(rj54n1->clk);
1370 eclkget:
1371 v4l2_ctrl_handler_free(&rj54n1->hdl);
1372 }
1373
1374 return ret;
1375 }
1376
rj54n1_remove(struct i2c_client * client)1377 static int rj54n1_remove(struct i2c_client *client)
1378 {
1379 struct rj54n1 *rj54n1 = to_rj54n1(client);
1380 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
1381
1382 v4l2_clk_put(rj54n1->clk);
1383 v4l2_device_unregister_subdev(&rj54n1->subdev);
1384 if (ssdd->free_bus)
1385 ssdd->free_bus(ssdd);
1386 v4l2_ctrl_handler_free(&rj54n1->hdl);
1387
1388 return 0;
1389 }
1390
1391 static const struct i2c_device_id rj54n1_id[] = {
1392 { "rj54n1cb0c", 0 },
1393 { }
1394 };
1395 MODULE_DEVICE_TABLE(i2c, rj54n1_id);
1396
1397 static struct i2c_driver rj54n1_i2c_driver = {
1398 .driver = {
1399 .name = "rj54n1cb0c",
1400 },
1401 .probe = rj54n1_probe,
1402 .remove = rj54n1_remove,
1403 .id_table = rj54n1_id,
1404 };
1405
1406 module_i2c_driver(rj54n1_i2c_driver);
1407
1408 MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver");
1409 MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
1410 MODULE_LICENSE("GPL v2");
1411