1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Driver for RJ54N1CB0C CMOS Image Sensor from Sharp |
4 | * |
5 | * Copyright (C) 2018, Jacopo Mondi <jacopo@jmondi.org> |
6 | * |
7 | * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de> |
8 | */ |
9 | |
10 | #include <linux/clk.h> |
11 | #include <linux/delay.h> |
12 | #include <linux/gpio/consumer.h> |
13 | #include <linux/i2c.h> |
14 | #include <linux/module.h> |
15 | #include <linux/slab.h> |
16 | #include <linux/v4l2-mediabus.h> |
17 | #include <linux/videodev2.h> |
18 | |
19 | #include <media/i2c/rj54n1cb0c.h> |
20 | #include <media/v4l2-device.h> |
21 | #include <media/v4l2-ctrls.h> |
22 | #include <media/v4l2-subdev.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 */ |
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 clk *clk; |
155 | struct gpio_desc *pwup_gpio; |
156 | struct gpio_desc *enable_gpio; |
157 | struct rj54n1_clock_div clk_div; |
158 | const struct rj54n1_datafmt *fmt; |
159 | struct v4l2_rect rect; /* Sensor window */ |
160 | unsigned int tgclk_mhz; |
161 | bool auto_wb; |
162 | unsigned short width; /* Output window */ |
163 | unsigned short height; |
164 | unsigned short resize; /* Sensor * 1024 / resize = Output */ |
165 | unsigned short scale; |
166 | u8 bank; |
167 | }; |
168 | |
169 | struct rj54n1_reg_val { |
170 | u16 reg; |
171 | u8 val; |
172 | }; |
173 | |
174 | static const struct rj54n1_reg_val bank_4[] = { |
175 | {0x417, 0}, |
176 | {0x42c, 0}, |
177 | {0x42d, 0xf0}, |
178 | {0x42e, 0}, |
179 | {0x42f, 0x50}, |
180 | {0x430, 0xf5}, |
181 | {0x431, 0x16}, |
182 | {0x432, 0x20}, |
183 | {0x433, 0}, |
184 | {0x434, 0xc8}, |
185 | {0x43c, 8}, |
186 | {0x43e, 0x90}, |
187 | {0x445, 0x83}, |
188 | {0x4ba, 0x58}, |
189 | {0x4bb, 4}, |
190 | {0x4bc, 0x20}, |
191 | {0x4db, 4}, |
192 | {0x4fe, 2}, |
193 | }; |
194 | |
195 | static const struct rj54n1_reg_val bank_5[] = { |
196 | {0x514, 0}, |
197 | {0x516, 0}, |
198 | {0x518, 0}, |
199 | {0x51a, 0}, |
200 | {0x51d, 0xff}, |
201 | {0x56f, 0x28}, |
202 | {0x575, 0x40}, |
203 | {0x5bc, 0x48}, |
204 | {0x5c1, 6}, |
205 | {0x5e5, 0x11}, |
206 | {0x5e6, 0x43}, |
207 | {0x5e7, 0x33}, |
208 | {0x5e8, 0x21}, |
209 | {0x5e9, 0x30}, |
210 | {0x5ea, 0x0}, |
211 | {0x5eb, 0xa5}, |
212 | {0x5ec, 0xff}, |
213 | {0x5fe, 2}, |
214 | }; |
215 | |
216 | static const struct rj54n1_reg_val bank_7[] = { |
217 | {0x70a, 0}, |
218 | {0x714, 0xff}, |
219 | {0x715, 0xff}, |
220 | {0x716, 0x1f}, |
221 | {0x7FE, 2}, |
222 | }; |
223 | |
224 | static const struct rj54n1_reg_val bank_8[] = { |
225 | {0x800, 0x00}, |
226 | {0x801, 0x01}, |
227 | {0x802, 0x61}, |
228 | {0x805, 0x00}, |
229 | {0x806, 0x00}, |
230 | {0x807, 0x00}, |
231 | {0x808, 0x00}, |
232 | {0x809, 0x01}, |
233 | {0x80A, 0x61}, |
234 | {0x80B, 0x00}, |
235 | {0x80C, 0x01}, |
236 | {0x80D, 0x00}, |
237 | {0x80E, 0x00}, |
238 | {0x80F, 0x00}, |
239 | {0x810, 0x00}, |
240 | {0x811, 0x01}, |
241 | {0x812, 0x61}, |
242 | {0x813, 0x00}, |
243 | {0x814, 0x11}, |
244 | {0x815, 0x00}, |
245 | {0x816, 0x41}, |
246 | {0x817, 0x00}, |
247 | {0x818, 0x51}, |
248 | {0x819, 0x01}, |
249 | {0x81A, 0x1F}, |
250 | {0x81B, 0x00}, |
251 | {0x81C, 0x01}, |
252 | {0x81D, 0x00}, |
253 | {0x81E, 0x11}, |
254 | {0x81F, 0x00}, |
255 | {0x820, 0x41}, |
256 | {0x821, 0x00}, |
257 | {0x822, 0x51}, |
258 | {0x823, 0x00}, |
259 | {0x824, 0x00}, |
260 | {0x825, 0x00}, |
261 | {0x826, 0x47}, |
262 | {0x827, 0x01}, |
263 | {0x828, 0x4F}, |
264 | {0x829, 0x00}, |
265 | {0x82A, 0x00}, |
266 | {0x82B, 0x00}, |
267 | {0x82C, 0x30}, |
268 | {0x82D, 0x00}, |
269 | {0x82E, 0x40}, |
270 | {0x82F, 0x00}, |
271 | {0x830, 0xB3}, |
272 | {0x831, 0x00}, |
273 | {0x832, 0xE3}, |
274 | {0x833, 0x00}, |
275 | {0x834, 0x00}, |
276 | {0x835, 0x00}, |
277 | {0x836, 0x00}, |
278 | {0x837, 0x00}, |
279 | {0x838, 0x00}, |
280 | {0x839, 0x01}, |
281 | {0x83A, 0x61}, |
282 | {0x83B, 0x00}, |
283 | {0x83C, 0x01}, |
284 | {0x83D, 0x00}, |
285 | {0x83E, 0x00}, |
286 | {0x83F, 0x00}, |
287 | {0x840, 0x00}, |
288 | {0x841, 0x01}, |
289 | {0x842, 0x61}, |
290 | {0x843, 0x00}, |
291 | {0x844, 0x1D}, |
292 | {0x845, 0x00}, |
293 | {0x846, 0x00}, |
294 | {0x847, 0x00}, |
295 | {0x848, 0x00}, |
296 | {0x849, 0x01}, |
297 | {0x84A, 0x1F}, |
298 | {0x84B, 0x00}, |
299 | {0x84C, 0x05}, |
300 | {0x84D, 0x00}, |
301 | {0x84E, 0x19}, |
302 | {0x84F, 0x01}, |
303 | {0x850, 0x21}, |
304 | {0x851, 0x01}, |
305 | {0x852, 0x5D}, |
306 | {0x853, 0x00}, |
307 | {0x854, 0x00}, |
308 | {0x855, 0x00}, |
309 | {0x856, 0x19}, |
310 | {0x857, 0x01}, |
311 | {0x858, 0x21}, |
312 | {0x859, 0x00}, |
313 | {0x85A, 0x00}, |
314 | {0x85B, 0x00}, |
315 | {0x85C, 0x00}, |
316 | {0x85D, 0x00}, |
317 | {0x85E, 0x00}, |
318 | {0x85F, 0x00}, |
319 | {0x860, 0xB3}, |
320 | {0x861, 0x00}, |
321 | {0x862, 0xE3}, |
322 | {0x863, 0x00}, |
323 | {0x864, 0x00}, |
324 | {0x865, 0x00}, |
325 | {0x866, 0x00}, |
326 | {0x867, 0x00}, |
327 | {0x868, 0x00}, |
328 | {0x869, 0xE2}, |
329 | {0x86A, 0x00}, |
330 | {0x86B, 0x01}, |
331 | {0x86C, 0x06}, |
332 | {0x86D, 0x00}, |
333 | {0x86E, 0x00}, |
334 | {0x86F, 0x00}, |
335 | {0x870, 0x60}, |
336 | {0x871, 0x8C}, |
337 | {0x872, 0x10}, |
338 | {0x873, 0x00}, |
339 | {0x874, 0xE0}, |
340 | {0x875, 0x00}, |
341 | {0x876, 0x27}, |
342 | {0x877, 0x01}, |
343 | {0x878, 0x00}, |
344 | {0x879, 0x00}, |
345 | {0x87A, 0x00}, |
346 | {0x87B, 0x03}, |
347 | {0x87C, 0x00}, |
348 | {0x87D, 0x00}, |
349 | {0x87E, 0x00}, |
350 | {0x87F, 0x00}, |
351 | {0x880, 0x00}, |
352 | {0x881, 0x00}, |
353 | {0x882, 0x00}, |
354 | {0x883, 0x00}, |
355 | {0x884, 0x00}, |
356 | {0x885, 0x00}, |
357 | {0x886, 0xF8}, |
358 | {0x887, 0x00}, |
359 | {0x888, 0x03}, |
360 | {0x889, 0x00}, |
361 | {0x88A, 0x64}, |
362 | {0x88B, 0x00}, |
363 | {0x88C, 0x03}, |
364 | {0x88D, 0x00}, |
365 | {0x88E, 0xB1}, |
366 | {0x88F, 0x00}, |
367 | {0x890, 0x03}, |
368 | {0x891, 0x01}, |
369 | {0x892, 0x1D}, |
370 | {0x893, 0x00}, |
371 | {0x894, 0x03}, |
372 | {0x895, 0x01}, |
373 | {0x896, 0x4B}, |
374 | {0x897, 0x00}, |
375 | {0x898, 0xE5}, |
376 | {0x899, 0x00}, |
377 | {0x89A, 0x01}, |
378 | {0x89B, 0x00}, |
379 | {0x89C, 0x01}, |
380 | {0x89D, 0x04}, |
381 | {0x89E, 0xC8}, |
382 | {0x89F, 0x00}, |
383 | {0x8A0, 0x01}, |
384 | {0x8A1, 0x01}, |
385 | {0x8A2, 0x61}, |
386 | {0x8A3, 0x00}, |
387 | {0x8A4, 0x01}, |
388 | {0x8A5, 0x00}, |
389 | {0x8A6, 0x00}, |
390 | {0x8A7, 0x00}, |
391 | {0x8A8, 0x00}, |
392 | {0x8A9, 0x00}, |
393 | {0x8AA, 0x7F}, |
394 | {0x8AB, 0x03}, |
395 | {0x8AC, 0x00}, |
396 | {0x8AD, 0x00}, |
397 | {0x8AE, 0x00}, |
398 | {0x8AF, 0x00}, |
399 | {0x8B0, 0x00}, |
400 | {0x8B1, 0x00}, |
401 | {0x8B6, 0x00}, |
402 | {0x8B7, 0x01}, |
403 | {0x8B8, 0x00}, |
404 | {0x8B9, 0x00}, |
405 | {0x8BA, 0x02}, |
406 | {0x8BB, 0x00}, |
407 | {0x8BC, 0xFF}, |
408 | {0x8BD, 0x00}, |
409 | {0x8FE, 2}, |
410 | }; |
411 | |
412 | static const struct rj54n1_reg_val bank_10[] = { |
413 | {0x10bf, 0x69} |
414 | }; |
415 | |
416 | /* Clock dividers - these are default register values, divider = register + 1 */ |
417 | static const struct rj54n1_clock_div clk_div = { |
418 | .ratio_tg = 3 /* default: 5 */, |
419 | .ratio_t = 4 /* default: 1 */, |
420 | .ratio_r = 4 /* default: 0 */, |
421 | .ratio_op = 1 /* default: 5 */, |
422 | .ratio_o = 9 /* default: 0 */, |
423 | }; |
424 | |
425 | static struct rj54n1 *to_rj54n1(const struct i2c_client *client) |
426 | { |
427 | return container_of(i2c_get_clientdata(client), struct rj54n1, subdev); |
428 | } |
429 | |
430 | static int reg_read(struct i2c_client *client, const u16 reg) |
431 | { |
432 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
433 | int ret; |
434 | |
435 | /* set bank */ |
436 | if (rj54n1->bank != reg >> 8) { |
437 | dev_dbg(&client->dev, "[0x%x] = 0x%x\n" , 0xff, reg >> 8); |
438 | ret = i2c_smbus_write_byte_data(client, command: 0xff, value: reg >> 8); |
439 | if (ret < 0) |
440 | return ret; |
441 | rj54n1->bank = reg >> 8; |
442 | } |
443 | return i2c_smbus_read_byte_data(client, command: reg & 0xff); |
444 | } |
445 | |
446 | static int reg_write(struct i2c_client *client, const u16 reg, |
447 | const u8 data) |
448 | { |
449 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
450 | int ret; |
451 | |
452 | /* set bank */ |
453 | if (rj54n1->bank != reg >> 8) { |
454 | dev_dbg(&client->dev, "[0x%x] = 0x%x\n" , 0xff, reg >> 8); |
455 | ret = i2c_smbus_write_byte_data(client, command: 0xff, value: reg >> 8); |
456 | if (ret < 0) |
457 | return ret; |
458 | rj54n1->bank = reg >> 8; |
459 | } |
460 | dev_dbg(&client->dev, "[0x%x] = 0x%x\n" , reg & 0xff, data); |
461 | return i2c_smbus_write_byte_data(client, command: reg & 0xff, value: data); |
462 | } |
463 | |
464 | static int reg_set(struct i2c_client *client, const u16 reg, |
465 | const u8 data, const u8 mask) |
466 | { |
467 | int ret; |
468 | |
469 | ret = reg_read(client, reg); |
470 | if (ret < 0) |
471 | return ret; |
472 | return reg_write(client, reg, data: (ret & ~mask) | (data & mask)); |
473 | } |
474 | |
475 | static int reg_write_multiple(struct i2c_client *client, |
476 | const struct rj54n1_reg_val *rv, const int n) |
477 | { |
478 | int i, ret; |
479 | |
480 | for (i = 0; i < n; i++) { |
481 | ret = reg_write(client, reg: rv->reg, data: rv->val); |
482 | if (ret < 0) |
483 | return ret; |
484 | rv++; |
485 | } |
486 | |
487 | return 0; |
488 | } |
489 | |
490 | static int rj54n1_enum_mbus_code(struct v4l2_subdev *sd, |
491 | struct v4l2_subdev_state *sd_state, |
492 | struct v4l2_subdev_mbus_code_enum *code) |
493 | { |
494 | if (code->pad || code->index >= ARRAY_SIZE(rj54n1_colour_fmts)) |
495 | return -EINVAL; |
496 | |
497 | code->code = rj54n1_colour_fmts[code->index].code; |
498 | return 0; |
499 | } |
500 | |
501 | static int rj54n1_s_stream(struct v4l2_subdev *sd, int enable) |
502 | { |
503 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
504 | |
505 | /* Switch between preview and still shot modes */ |
506 | return reg_set(client, RJ54N1_STILL_CONTROL, data: (!enable) << 7, mask: 0x80); |
507 | } |
508 | |
509 | static int rj54n1_set_rect(struct i2c_client *client, |
510 | u16 reg_x, u16 reg_y, u16 reg_xy, |
511 | u32 width, u32 height) |
512 | { |
513 | int ret; |
514 | |
515 | ret = reg_write(client, reg: reg_xy, |
516 | data: ((width >> 4) & 0x70) | |
517 | ((height >> 8) & 7)); |
518 | |
519 | if (!ret) |
520 | ret = reg_write(client, reg: reg_x, data: width & 0xff); |
521 | if (!ret) |
522 | ret = reg_write(client, reg: reg_y, data: height & 0xff); |
523 | |
524 | return ret; |
525 | } |
526 | |
527 | /* |
528 | * Some commands, specifically certain initialisation sequences, require |
529 | * a commit operation. |
530 | */ |
531 | static int rj54n1_commit(struct i2c_client *client) |
532 | { |
533 | int ret = reg_write(client, RJ54N1_INIT_START, data: 1); |
534 | msleep(msecs: 10); |
535 | if (!ret) |
536 | ret = reg_write(client, RJ54N1_INIT_START, data: 0); |
537 | return ret; |
538 | } |
539 | |
540 | static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, |
541 | s32 *out_w, s32 *out_h); |
542 | |
543 | static int rj54n1_set_selection(struct v4l2_subdev *sd, |
544 | struct v4l2_subdev_state *sd_state, |
545 | struct v4l2_subdev_selection *sel) |
546 | { |
547 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
548 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
549 | const struct v4l2_rect *rect = &sel->r; |
550 | int output_w, output_h, input_w = rect->width, input_h = rect->height; |
551 | int ret; |
552 | |
553 | if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE || |
554 | sel->target != V4L2_SEL_TGT_CROP) |
555 | return -EINVAL; |
556 | |
557 | /* arbitrary minimum width and height, edges unimportant */ |
558 | v4l_bound_align_image(width: &input_w, wmin: 8, RJ54N1_MAX_WIDTH, walign: 0, |
559 | height: &input_h, hmin: 8, RJ54N1_MAX_HEIGHT, halign: 0, salign: 0); |
560 | |
561 | output_w = (input_w * 1024 + rj54n1->resize / 2) / rj54n1->resize; |
562 | output_h = (input_h * 1024 + rj54n1->resize / 2) / rj54n1->resize; |
563 | |
564 | dev_dbg(&client->dev, "Scaling for %dx%d : %u = %dx%d\n" , |
565 | input_w, input_h, rj54n1->resize, output_w, output_h); |
566 | |
567 | ret = rj54n1_sensor_scale(sd, in_w: &input_w, in_h: &input_h, out_w: &output_w, out_h: &output_h); |
568 | if (ret < 0) |
569 | return ret; |
570 | |
571 | rj54n1->width = output_w; |
572 | rj54n1->height = output_h; |
573 | rj54n1->resize = ret; |
574 | rj54n1->rect.width = input_w; |
575 | rj54n1->rect.height = input_h; |
576 | |
577 | return 0; |
578 | } |
579 | |
580 | static int rj54n1_get_selection(struct v4l2_subdev *sd, |
581 | struct v4l2_subdev_state *sd_state, |
582 | struct v4l2_subdev_selection *sel) |
583 | { |
584 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
585 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
586 | |
587 | if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) |
588 | return -EINVAL; |
589 | |
590 | switch (sel->target) { |
591 | case V4L2_SEL_TGT_CROP_BOUNDS: |
592 | sel->r.left = RJ54N1_COLUMN_SKIP; |
593 | sel->r.top = RJ54N1_ROW_SKIP; |
594 | sel->r.width = RJ54N1_MAX_WIDTH; |
595 | sel->r.height = RJ54N1_MAX_HEIGHT; |
596 | return 0; |
597 | case V4L2_SEL_TGT_CROP: |
598 | sel->r = rj54n1->rect; |
599 | return 0; |
600 | default: |
601 | return -EINVAL; |
602 | } |
603 | } |
604 | |
605 | static int rj54n1_get_fmt(struct v4l2_subdev *sd, |
606 | struct v4l2_subdev_state *sd_state, |
607 | struct v4l2_subdev_format *format) |
608 | { |
609 | struct v4l2_mbus_framefmt *mf = &format->format; |
610 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
611 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
612 | |
613 | if (format->pad) |
614 | return -EINVAL; |
615 | |
616 | mf->code = rj54n1->fmt->code; |
617 | mf->colorspace = rj54n1->fmt->colorspace; |
618 | mf->ycbcr_enc = V4L2_YCBCR_ENC_601; |
619 | mf->xfer_func = V4L2_XFER_FUNC_SRGB; |
620 | mf->quantization = V4L2_QUANTIZATION_DEFAULT; |
621 | mf->field = V4L2_FIELD_NONE; |
622 | mf->width = rj54n1->width; |
623 | mf->height = rj54n1->height; |
624 | |
625 | return 0; |
626 | } |
627 | |
628 | /* |
629 | * The actual geometry configuration routine. It scales the input window into |
630 | * the output one, updates the window sizes and returns an error or the resize |
631 | * coefficient on success. Note: we only use the "Fixed Scaling" on this camera. |
632 | */ |
633 | static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, |
634 | s32 *out_w, s32 *out_h) |
635 | { |
636 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
637 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
638 | unsigned int skip, resize, input_w = *in_w, input_h = *in_h, |
639 | output_w = *out_w, output_h = *out_h; |
640 | u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom; |
641 | unsigned int peak, peak_50, peak_60; |
642 | int ret; |
643 | |
644 | /* |
645 | * We have a problem with crops, where the window is larger than 512x384 |
646 | * and output window is larger than a half of the input one. In this |
647 | * case we have to either reduce the input window to equal or below |
648 | * 512x384 or the output window to equal or below 1/2 of the input. |
649 | */ |
650 | if (output_w > max(512U, input_w / 2)) { |
651 | if (2 * output_w > RJ54N1_MAX_WIDTH) { |
652 | input_w = RJ54N1_MAX_WIDTH; |
653 | output_w = RJ54N1_MAX_WIDTH / 2; |
654 | } else { |
655 | input_w = output_w * 2; |
656 | } |
657 | |
658 | dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n" , |
659 | input_w, output_w); |
660 | } |
661 | |
662 | if (output_h > max(384U, input_h / 2)) { |
663 | if (2 * output_h > RJ54N1_MAX_HEIGHT) { |
664 | input_h = RJ54N1_MAX_HEIGHT; |
665 | output_h = RJ54N1_MAX_HEIGHT / 2; |
666 | } else { |
667 | input_h = output_h * 2; |
668 | } |
669 | |
670 | dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n" , |
671 | input_h, output_h); |
672 | } |
673 | |
674 | /* Idea: use the read mode for snapshots, handle separate geometries */ |
675 | ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L, |
676 | RJ54N1_Y_OUTPUT_SIZE_S_L, |
677 | RJ54N1_XY_OUTPUT_SIZE_S_H, width: output_w, height: output_h); |
678 | if (!ret) |
679 | ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L, |
680 | RJ54N1_Y_OUTPUT_SIZE_P_L, |
681 | RJ54N1_XY_OUTPUT_SIZE_P_H, width: output_w, height: output_h); |
682 | |
683 | if (ret < 0) |
684 | return ret; |
685 | |
686 | if (output_w > input_w && output_h > input_h) { |
687 | input_w = output_w; |
688 | input_h = output_h; |
689 | |
690 | resize = 1024; |
691 | } else { |
692 | unsigned int resize_x, resize_y; |
693 | resize_x = (input_w * 1024 + output_w / 2) / output_w; |
694 | resize_y = (input_h * 1024 + output_h / 2) / output_h; |
695 | |
696 | /* We want max(resize_x, resize_y), check if it still fits */ |
697 | if (resize_x > resize_y && |
698 | (output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT) |
699 | resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) / |
700 | output_h; |
701 | else if (resize_y > resize_x && |
702 | (output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH) |
703 | resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) / |
704 | output_w; |
705 | else |
706 | resize = max(resize_x, resize_y); |
707 | |
708 | /* Prohibited value ranges */ |
709 | switch (resize) { |
710 | case 2040 ... 2047: |
711 | resize = 2039; |
712 | break; |
713 | case 4080 ... 4095: |
714 | resize = 4079; |
715 | break; |
716 | case 8160 ... 8191: |
717 | resize = 8159; |
718 | break; |
719 | case 16320 ... 16384: |
720 | resize = 16319; |
721 | } |
722 | } |
723 | |
724 | /* Set scaling */ |
725 | ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, data: resize & 0xff); |
726 | if (!ret) |
727 | ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, data: resize >> 8); |
728 | |
729 | if (ret < 0) |
730 | return ret; |
731 | |
732 | /* |
733 | * Configure a skipping bitmask. The sensor will select a skipping value |
734 | * among set bits automatically. This is very unclear in the datasheet |
735 | * too. I was told, in this register one enables all skipping values, |
736 | * that are required for a specific resize, and the camera selects |
737 | * automatically, which ones to use. But it is unclear how to identify, |
738 | * which cropping values are needed. Secondly, why don't we just set all |
739 | * bits and let the camera choose? Would it increase processing time and |
740 | * reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to |
741 | * improve the image quality or stability for larger frames (see comment |
742 | * above), but I didn't check the framerate. |
743 | */ |
744 | skip = min(resize / 1024, 15U); |
745 | |
746 | inc_sel = 1 << skip; |
747 | |
748 | if (inc_sel <= 2) |
749 | inc_sel = 0xc; |
750 | else if (resize & 1023 && skip < 15) |
751 | inc_sel |= 1 << (skip + 1); |
752 | |
753 | ret = reg_write(client, RJ54N1_INC_USE_SEL_L, data: inc_sel & 0xfc); |
754 | if (!ret) |
755 | ret = reg_write(client, RJ54N1_INC_USE_SEL_H, data: inc_sel >> 8); |
756 | |
757 | if (!rj54n1->auto_wb) { |
758 | /* Auto white balance window */ |
759 | wb_left = output_w / 16; |
760 | wb_right = (3 * output_w / 4 - 3) / 4; |
761 | wb_top = output_h / 16; |
762 | wb_bottom = (3 * output_h / 4 - 3) / 4; |
763 | wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) | |
764 | ((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1); |
765 | |
766 | if (!ret) |
767 | ret = reg_write(client, RJ54N1_BIT8_WB, data: wb_bit8); |
768 | if (!ret) |
769 | ret = reg_write(client, RJ54N1_HCAPS_WB, data: wb_left); |
770 | if (!ret) |
771 | ret = reg_write(client, RJ54N1_VCAPS_WB, data: wb_top); |
772 | if (!ret) |
773 | ret = reg_write(client, RJ54N1_HCAPE_WB, data: wb_right); |
774 | if (!ret) |
775 | ret = reg_write(client, RJ54N1_VCAPE_WB, data: wb_bottom); |
776 | } |
777 | |
778 | /* Antiflicker */ |
779 | peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz / |
780 | 10000; |
781 | peak_50 = peak / 6; |
782 | peak_60 = peak / 5; |
783 | |
784 | if (!ret) |
785 | ret = reg_write(client, RJ54N1_PEAK_H, |
786 | data: ((peak_50 >> 4) & 0xf0) | (peak_60 >> 8)); |
787 | if (!ret) |
788 | ret = reg_write(client, RJ54N1_PEAK_50, data: peak_50); |
789 | if (!ret) |
790 | ret = reg_write(client, RJ54N1_PEAK_60, data: peak_60); |
791 | if (!ret) |
792 | ret = reg_write(client, RJ54N1_PEAK_DIFF, data: peak / 150); |
793 | |
794 | /* Start resizing */ |
795 | if (!ret) |
796 | ret = reg_write(client, RJ54N1_RESIZE_CONTROL, |
797 | RESIZE_HOLD_SEL | RESIZE_GO | 1); |
798 | |
799 | if (ret < 0) |
800 | return ret; |
801 | |
802 | /* Constant taken from manufacturer's example */ |
803 | msleep(msecs: 230); |
804 | |
805 | ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1); |
806 | if (ret < 0) |
807 | return ret; |
808 | |
809 | *in_w = (output_w * resize + 512) / 1024; |
810 | *in_h = (output_h * resize + 512) / 1024; |
811 | *out_w = output_w; |
812 | *out_h = output_h; |
813 | |
814 | dev_dbg(&client->dev, "Scaled for %dx%d : %u = %ux%u, skip %u\n" , |
815 | *in_w, *in_h, resize, output_w, output_h, skip); |
816 | |
817 | return resize; |
818 | } |
819 | |
820 | static int rj54n1_set_clock(struct i2c_client *client) |
821 | { |
822 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
823 | int ret; |
824 | |
825 | /* Enable external clock */ |
826 | ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY); |
827 | /* Leave stand-by. Note: use this when implementing suspend / resume */ |
828 | if (!ret) |
829 | ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK); |
830 | |
831 | if (!ret) |
832 | ret = reg_write(client, RJ54N1_PLL_L, PLL_L); |
833 | if (!ret) |
834 | ret = reg_write(client, RJ54N1_PLL_N, PLL_N); |
835 | |
836 | /* TGCLK dividers */ |
837 | if (!ret) |
838 | ret = reg_write(client, RJ54N1_RATIO_TG, |
839 | data: rj54n1->clk_div.ratio_tg); |
840 | if (!ret) |
841 | ret = reg_write(client, RJ54N1_RATIO_T, |
842 | data: rj54n1->clk_div.ratio_t); |
843 | if (!ret) |
844 | ret = reg_write(client, RJ54N1_RATIO_R, |
845 | data: rj54n1->clk_div.ratio_r); |
846 | |
847 | /* Enable TGCLK & RAMP */ |
848 | if (!ret) |
849 | ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, data: 3); |
850 | |
851 | /* Disable clock output */ |
852 | if (!ret) |
853 | ret = reg_write(client, RJ54N1_OCLK_DSP, data: 0); |
854 | |
855 | /* Set divisors */ |
856 | if (!ret) |
857 | ret = reg_write(client, RJ54N1_RATIO_OP, |
858 | data: rj54n1->clk_div.ratio_op); |
859 | if (!ret) |
860 | ret = reg_write(client, RJ54N1_RATIO_O, |
861 | data: rj54n1->clk_div.ratio_o); |
862 | |
863 | /* Enable OCLK */ |
864 | if (!ret) |
865 | ret = reg_write(client, RJ54N1_OCLK_SEL_EN, data: 1); |
866 | |
867 | /* Use PLL for Timing Generator, write 2 to reserved bits */ |
868 | if (!ret) |
869 | ret = reg_write(client, RJ54N1_TG_BYPASS, data: 2); |
870 | |
871 | /* Take sensor out of reset */ |
872 | if (!ret) |
873 | ret = reg_write(client, RJ54N1_RESET_STANDBY, |
874 | E_EXCLK | SEN_RSTX); |
875 | /* Enable PLL */ |
876 | if (!ret) |
877 | ret = reg_write(client, RJ54N1_PLL_EN, data: 1); |
878 | |
879 | /* Wait for PLL to stabilise */ |
880 | msleep(msecs: 10); |
881 | |
882 | /* Enable clock to frequency divider */ |
883 | if (!ret) |
884 | ret = reg_write(client, RJ54N1_CLK_RST, data: 1); |
885 | |
886 | if (!ret) |
887 | ret = reg_read(client, RJ54N1_CLK_RST); |
888 | if (ret != 1) { |
889 | dev_err(&client->dev, |
890 | "Resetting RJ54N1CB0C clock failed: %d!\n" , ret); |
891 | return -EIO; |
892 | } |
893 | |
894 | /* Start the PLL */ |
895 | ret = reg_set(client, RJ54N1_OCLK_DSP, data: 1, mask: 1); |
896 | |
897 | /* Enable OCLK */ |
898 | if (!ret) |
899 | ret = reg_write(client, RJ54N1_OCLK_SEL_EN, data: 1); |
900 | |
901 | return ret; |
902 | } |
903 | |
904 | static int rj54n1_reg_init(struct i2c_client *client) |
905 | { |
906 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
907 | int ret = rj54n1_set_clock(client); |
908 | |
909 | if (!ret) |
910 | ret = reg_write_multiple(client, rv: bank_7, ARRAY_SIZE(bank_7)); |
911 | if (!ret) |
912 | ret = reg_write_multiple(client, rv: bank_10, ARRAY_SIZE(bank_10)); |
913 | |
914 | /* Set binning divisors */ |
915 | if (!ret) |
916 | ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, data: 3 | (7 << 4)); |
917 | if (!ret) |
918 | ret = reg_write(client, RJ54N1_SCALE_4_LEV, data: 0xf); |
919 | |
920 | /* Switch to fixed resize mode */ |
921 | if (!ret) |
922 | ret = reg_write(client, RJ54N1_RESIZE_CONTROL, |
923 | RESIZE_HOLD_SEL | 1); |
924 | |
925 | /* Set gain */ |
926 | if (!ret) |
927 | ret = reg_write(client, RJ54N1_Y_GAIN, data: 0x84); |
928 | |
929 | /* |
930 | * Mirror the image back: default is upside down and left-to-right... |
931 | * Set manual preview / still shot switching |
932 | */ |
933 | if (!ret) |
934 | ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, data: 0x27); |
935 | |
936 | if (!ret) |
937 | ret = reg_write_multiple(client, rv: bank_4, ARRAY_SIZE(bank_4)); |
938 | |
939 | /* Auto exposure area */ |
940 | if (!ret) |
941 | ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, data: 0x80); |
942 | /* Check current auto WB config */ |
943 | if (!ret) |
944 | ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I); |
945 | if (ret >= 0) { |
946 | rj54n1->auto_wb = ret & 0x80; |
947 | ret = reg_write_multiple(client, rv: bank_5, ARRAY_SIZE(bank_5)); |
948 | } |
949 | if (!ret) |
950 | ret = reg_write_multiple(client, rv: bank_8, ARRAY_SIZE(bank_8)); |
951 | |
952 | if (!ret) |
953 | ret = reg_write(client, RJ54N1_RESET_STANDBY, |
954 | E_EXCLK | DSP_RSTX | SEN_RSTX); |
955 | |
956 | /* Commit init */ |
957 | if (!ret) |
958 | ret = rj54n1_commit(client); |
959 | |
960 | /* Take DSP, TG, sensor out of reset */ |
961 | if (!ret) |
962 | ret = reg_write(client, RJ54N1_RESET_STANDBY, |
963 | E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX); |
964 | |
965 | /* Start register update? Same register as 0x?FE in many bank_* sets */ |
966 | if (!ret) |
967 | ret = reg_write(client, RJ54N1_FWFLG, data: 2); |
968 | |
969 | /* Constant taken from manufacturer's example */ |
970 | msleep(msecs: 700); |
971 | |
972 | return ret; |
973 | } |
974 | |
975 | static int rj54n1_set_fmt(struct v4l2_subdev *sd, |
976 | struct v4l2_subdev_state *sd_state, |
977 | struct v4l2_subdev_format *format) |
978 | { |
979 | struct v4l2_mbus_framefmt *mf = &format->format; |
980 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
981 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
982 | const struct rj54n1_datafmt *fmt; |
983 | int output_w, output_h, max_w, max_h, |
984 | input_w = rj54n1->rect.width, input_h = rj54n1->rect.height; |
985 | int align = mf->code == MEDIA_BUS_FMT_SBGGR10_1X10 || |
986 | mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE || |
987 | mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE || |
988 | mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE || |
989 | mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE; |
990 | int ret; |
991 | |
992 | if (format->pad) |
993 | return -EINVAL; |
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(code: mf->code, fmt: 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(width: &mf->width, wmin: 112, RJ54N1_MAX_WIDTH, walign: align, |
1009 | height: &mf->height, hmin: 84, RJ54N1_MAX_HEIGHT, halign: align, salign: 0); |
1010 | |
1011 | if (format->which == V4L2_SUBDEV_FORMAT_TRY) |
1012 | return 0; |
1013 | |
1014 | /* |
1015 | * Verify if the sensor has just been powered on. TODO: replace this |
1016 | * with proper PM, when a suitable API is available. |
1017 | */ |
1018 | ret = reg_read(client, RJ54N1_RESET_STANDBY); |
1019 | if (ret < 0) |
1020 | return ret; |
1021 | |
1022 | if (!(ret & E_EXCLK)) { |
1023 | ret = rj54n1_reg_init(client); |
1024 | if (ret < 0) |
1025 | return ret; |
1026 | } |
1027 | |
1028 | /* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */ |
1029 | switch (mf->code) { |
1030 | case MEDIA_BUS_FMT_YUYV8_2X8: |
1031 | ret = reg_write(client, RJ54N1_OUT_SEL, data: 0); |
1032 | if (!ret) |
1033 | ret = reg_set(client, RJ54N1_BYTE_SWAP, data: 8, mask: 8); |
1034 | break; |
1035 | case MEDIA_BUS_FMT_YVYU8_2X8: |
1036 | ret = reg_write(client, RJ54N1_OUT_SEL, data: 0); |
1037 | if (!ret) |
1038 | ret = reg_set(client, RJ54N1_BYTE_SWAP, data: 0, mask: 8); |
1039 | break; |
1040 | case MEDIA_BUS_FMT_RGB565_2X8_LE: |
1041 | ret = reg_write(client, RJ54N1_OUT_SEL, data: 0x11); |
1042 | if (!ret) |
1043 | ret = reg_set(client, RJ54N1_BYTE_SWAP, data: 8, mask: 8); |
1044 | break; |
1045 | case MEDIA_BUS_FMT_RGB565_2X8_BE: |
1046 | ret = reg_write(client, RJ54N1_OUT_SEL, data: 0x11); |
1047 | if (!ret) |
1048 | ret = reg_set(client, RJ54N1_BYTE_SWAP, data: 0, mask: 8); |
1049 | break; |
1050 | case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE: |
1051 | ret = reg_write(client, RJ54N1_OUT_SEL, data: 4); |
1052 | if (!ret) |
1053 | ret = reg_set(client, RJ54N1_BYTE_SWAP, data: 8, mask: 8); |
1054 | if (!ret) |
1055 | ret = reg_write(client, RJ54N1_RA_SEL_UL, data: 0); |
1056 | break; |
1057 | case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE: |
1058 | ret = reg_write(client, RJ54N1_OUT_SEL, data: 4); |
1059 | if (!ret) |
1060 | ret = reg_set(client, RJ54N1_BYTE_SWAP, data: 8, mask: 8); |
1061 | if (!ret) |
1062 | ret = reg_write(client, RJ54N1_RA_SEL_UL, data: 8); |
1063 | break; |
1064 | case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE: |
1065 | ret = reg_write(client, RJ54N1_OUT_SEL, data: 4); |
1066 | if (!ret) |
1067 | ret = reg_set(client, RJ54N1_BYTE_SWAP, data: 0, mask: 8); |
1068 | if (!ret) |
1069 | ret = reg_write(client, RJ54N1_RA_SEL_UL, data: 0); |
1070 | break; |
1071 | case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE: |
1072 | ret = reg_write(client, RJ54N1_OUT_SEL, data: 4); |
1073 | if (!ret) |
1074 | ret = reg_set(client, RJ54N1_BYTE_SWAP, data: 0, mask: 8); |
1075 | if (!ret) |
1076 | ret = reg_write(client, RJ54N1_RA_SEL_UL, data: 8); |
1077 | break; |
1078 | case MEDIA_BUS_FMT_SBGGR10_1X10: |
1079 | ret = reg_write(client, RJ54N1_OUT_SEL, data: 5); |
1080 | break; |
1081 | default: |
1082 | ret = -EINVAL; |
1083 | } |
1084 | |
1085 | /* Special case: a raw mode with 10 bits of data per clock tick */ |
1086 | if (!ret) |
1087 | ret = reg_set(client, RJ54N1_OCLK_SEL_EN, |
1088 | data: (mf->code == MEDIA_BUS_FMT_SBGGR10_1X10) << 1, mask: 2); |
1089 | |
1090 | if (ret < 0) |
1091 | return ret; |
1092 | |
1093 | /* Supported scales 1:1 >= scale > 1:16 */ |
1094 | max_w = mf->width * (16 * 1024 - 1) / 1024; |
1095 | if (input_w > max_w) |
1096 | input_w = max_w; |
1097 | max_h = mf->height * (16 * 1024 - 1) / 1024; |
1098 | if (input_h > max_h) |
1099 | input_h = max_h; |
1100 | |
1101 | output_w = mf->width; |
1102 | output_h = mf->height; |
1103 | |
1104 | ret = rj54n1_sensor_scale(sd, in_w: &input_w, in_h: &input_h, out_w: &output_w, out_h: &output_h); |
1105 | if (ret < 0) |
1106 | return ret; |
1107 | |
1108 | fmt = rj54n1_find_datafmt(code: mf->code, fmt: rj54n1_colour_fmts, |
1109 | ARRAY_SIZE(rj54n1_colour_fmts)); |
1110 | |
1111 | rj54n1->fmt = fmt; |
1112 | rj54n1->resize = ret; |
1113 | rj54n1->rect.width = input_w; |
1114 | rj54n1->rect.height = input_h; |
1115 | rj54n1->width = output_w; |
1116 | rj54n1->height = output_h; |
1117 | |
1118 | mf->width = output_w; |
1119 | mf->height = output_h; |
1120 | mf->field = V4L2_FIELD_NONE; |
1121 | mf->colorspace = fmt->colorspace; |
1122 | |
1123 | return 0; |
1124 | } |
1125 | |
1126 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
1127 | static int rj54n1_g_register(struct v4l2_subdev *sd, |
1128 | struct v4l2_dbg_register *reg) |
1129 | { |
1130 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
1131 | |
1132 | if (reg->reg < 0x400 || reg->reg > 0x1fff) |
1133 | /* Registers > 0x0800 are only available from Sharp support */ |
1134 | return -EINVAL; |
1135 | |
1136 | reg->size = 1; |
1137 | reg->val = reg_read(client, reg: reg->reg); |
1138 | |
1139 | if (reg->val > 0xff) |
1140 | return -EIO; |
1141 | |
1142 | return 0; |
1143 | } |
1144 | |
1145 | static int rj54n1_s_register(struct v4l2_subdev *sd, |
1146 | const struct v4l2_dbg_register *reg) |
1147 | { |
1148 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
1149 | |
1150 | if (reg->reg < 0x400 || reg->reg > 0x1fff) |
1151 | /* Registers >= 0x0800 are only available from Sharp support */ |
1152 | return -EINVAL; |
1153 | |
1154 | if (reg_write(client, reg: reg->reg, data: reg->val) < 0) |
1155 | return -EIO; |
1156 | |
1157 | return 0; |
1158 | } |
1159 | #endif |
1160 | |
1161 | static int rj54n1_s_power(struct v4l2_subdev *sd, int on) |
1162 | { |
1163 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
1164 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
1165 | |
1166 | if (on) { |
1167 | if (rj54n1->pwup_gpio) |
1168 | gpiod_set_value(desc: rj54n1->pwup_gpio, value: 1); |
1169 | if (rj54n1->enable_gpio) |
1170 | gpiod_set_value(desc: rj54n1->enable_gpio, value: 1); |
1171 | |
1172 | msleep(msecs: 1); |
1173 | |
1174 | return clk_prepare_enable(clk: rj54n1->clk); |
1175 | } |
1176 | |
1177 | clk_disable_unprepare(clk: rj54n1->clk); |
1178 | |
1179 | if (rj54n1->enable_gpio) |
1180 | gpiod_set_value(desc: rj54n1->enable_gpio, value: 0); |
1181 | if (rj54n1->pwup_gpio) |
1182 | gpiod_set_value(desc: rj54n1->pwup_gpio, value: 0); |
1183 | |
1184 | return 0; |
1185 | } |
1186 | |
1187 | static int rj54n1_s_ctrl(struct v4l2_ctrl *ctrl) |
1188 | { |
1189 | struct rj54n1 *rj54n1 = container_of(ctrl->handler, struct rj54n1, hdl); |
1190 | struct v4l2_subdev *sd = &rj54n1->subdev; |
1191 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
1192 | int data; |
1193 | |
1194 | switch (ctrl->id) { |
1195 | case V4L2_CID_VFLIP: |
1196 | if (ctrl->val) |
1197 | data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, data: 0, mask: 1); |
1198 | else |
1199 | data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, data: 1, mask: 1); |
1200 | if (data < 0) |
1201 | return -EIO; |
1202 | return 0; |
1203 | case V4L2_CID_HFLIP: |
1204 | if (ctrl->val) |
1205 | data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, data: 0, mask: 2); |
1206 | else |
1207 | data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, data: 2, mask: 2); |
1208 | if (data < 0) |
1209 | return -EIO; |
1210 | return 0; |
1211 | case V4L2_CID_GAIN: |
1212 | if (reg_write(client, RJ54N1_Y_GAIN, data: ctrl->val * 2) < 0) |
1213 | return -EIO; |
1214 | return 0; |
1215 | case V4L2_CID_AUTO_WHITE_BALANCE: |
1216 | /* Auto WB area - whole image */ |
1217 | if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, data: ctrl->val << 7, |
1218 | mask: 0x80) < 0) |
1219 | return -EIO; |
1220 | rj54n1->auto_wb = ctrl->val; |
1221 | return 0; |
1222 | } |
1223 | |
1224 | return -EINVAL; |
1225 | } |
1226 | |
1227 | static const struct v4l2_ctrl_ops rj54n1_ctrl_ops = { |
1228 | .s_ctrl = rj54n1_s_ctrl, |
1229 | }; |
1230 | |
1231 | static const struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = { |
1232 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
1233 | .g_register = rj54n1_g_register, |
1234 | .s_register = rj54n1_s_register, |
1235 | #endif |
1236 | .s_power = rj54n1_s_power, |
1237 | }; |
1238 | |
1239 | static const struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = { |
1240 | .s_stream = rj54n1_s_stream, |
1241 | }; |
1242 | |
1243 | static const struct v4l2_subdev_pad_ops rj54n1_subdev_pad_ops = { |
1244 | .enum_mbus_code = rj54n1_enum_mbus_code, |
1245 | .get_selection = rj54n1_get_selection, |
1246 | .set_selection = rj54n1_set_selection, |
1247 | .get_fmt = rj54n1_get_fmt, |
1248 | .set_fmt = rj54n1_set_fmt, |
1249 | }; |
1250 | |
1251 | static const struct v4l2_subdev_ops rj54n1_subdev_ops = { |
1252 | .core = &rj54n1_subdev_core_ops, |
1253 | .video = &rj54n1_subdev_video_ops, |
1254 | .pad = &rj54n1_subdev_pad_ops, |
1255 | }; |
1256 | |
1257 | /* |
1258 | * Interface active, can use i2c. If it fails, it can indeed mean, that |
1259 | * this wasn't our capture interface, so, we wait for the right one |
1260 | */ |
1261 | static int rj54n1_video_probe(struct i2c_client *client, |
1262 | struct rj54n1_pdata *priv) |
1263 | { |
1264 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
1265 | int data1, data2; |
1266 | int ret; |
1267 | |
1268 | ret = rj54n1_s_power(sd: &rj54n1->subdev, on: 1); |
1269 | if (ret < 0) |
1270 | return ret; |
1271 | |
1272 | /* Read out the chip version register */ |
1273 | data1 = reg_read(client, RJ54N1_DEV_CODE); |
1274 | data2 = reg_read(client, RJ54N1_DEV_CODE2); |
1275 | |
1276 | if (data1 != 0x51 || data2 != 0x10) { |
1277 | ret = -ENODEV; |
1278 | dev_info(&client->dev, "No RJ54N1CB0C found, read 0x%x:0x%x\n" , |
1279 | data1, data2); |
1280 | goto done; |
1281 | } |
1282 | |
1283 | /* Configure IOCTL polarity from the platform data: 0 or 1 << 7. */ |
1284 | ret = reg_write(client, RJ54N1_IOC, data: priv->ioctl_high << 7); |
1285 | if (ret < 0) |
1286 | goto done; |
1287 | |
1288 | dev_info(&client->dev, "Detected a RJ54N1CB0C chip ID 0x%x:0x%x\n" , |
1289 | data1, data2); |
1290 | |
1291 | ret = v4l2_ctrl_handler_setup(hdl: &rj54n1->hdl); |
1292 | |
1293 | done: |
1294 | rj54n1_s_power(sd: &rj54n1->subdev, on: 0); |
1295 | return ret; |
1296 | } |
1297 | |
1298 | static int rj54n1_probe(struct i2c_client *client) |
1299 | { |
1300 | struct rj54n1 *rj54n1; |
1301 | struct i2c_adapter *adapter = client->adapter; |
1302 | struct rj54n1_pdata *rj54n1_priv; |
1303 | int ret; |
1304 | |
1305 | if (!client->dev.platform_data) { |
1306 | dev_err(&client->dev, "RJ54N1CB0C: missing platform data!\n" ); |
1307 | return -EINVAL; |
1308 | } |
1309 | |
1310 | rj54n1_priv = client->dev.platform_data; |
1311 | |
1312 | if (!i2c_check_functionality(adap: adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { |
1313 | dev_warn(&adapter->dev, |
1314 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n" ); |
1315 | return -EIO; |
1316 | } |
1317 | |
1318 | rj54n1 = devm_kzalloc(dev: &client->dev, size: sizeof(struct rj54n1), GFP_KERNEL); |
1319 | if (!rj54n1) |
1320 | return -ENOMEM; |
1321 | |
1322 | v4l2_i2c_subdev_init(sd: &rj54n1->subdev, client, ops: &rj54n1_subdev_ops); |
1323 | v4l2_ctrl_handler_init(&rj54n1->hdl, 4); |
1324 | v4l2_ctrl_new_std(hdl: &rj54n1->hdl, ops: &rj54n1_ctrl_ops, |
1325 | V4L2_CID_VFLIP, min: 0, max: 1, step: 1, def: 0); |
1326 | v4l2_ctrl_new_std(hdl: &rj54n1->hdl, ops: &rj54n1_ctrl_ops, |
1327 | V4L2_CID_HFLIP, min: 0, max: 1, step: 1, def: 0); |
1328 | v4l2_ctrl_new_std(hdl: &rj54n1->hdl, ops: &rj54n1_ctrl_ops, |
1329 | V4L2_CID_GAIN, min: 0, max: 127, step: 1, def: 66); |
1330 | v4l2_ctrl_new_std(hdl: &rj54n1->hdl, ops: &rj54n1_ctrl_ops, |
1331 | V4L2_CID_AUTO_WHITE_BALANCE, min: 0, max: 1, step: 1, def: 1); |
1332 | rj54n1->subdev.ctrl_handler = &rj54n1->hdl; |
1333 | if (rj54n1->hdl.error) |
1334 | return rj54n1->hdl.error; |
1335 | |
1336 | rj54n1->clk_div = clk_div; |
1337 | rj54n1->rect.left = RJ54N1_COLUMN_SKIP; |
1338 | rj54n1->rect.top = RJ54N1_ROW_SKIP; |
1339 | rj54n1->rect.width = RJ54N1_MAX_WIDTH; |
1340 | rj54n1->rect.height = RJ54N1_MAX_HEIGHT; |
1341 | rj54n1->width = RJ54N1_MAX_WIDTH; |
1342 | rj54n1->height = RJ54N1_MAX_HEIGHT; |
1343 | rj54n1->fmt = &rj54n1_colour_fmts[0]; |
1344 | rj54n1->resize = 1024; |
1345 | rj54n1->tgclk_mhz = (rj54n1_priv->mclk_freq / PLL_L * PLL_N) / |
1346 | (clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1); |
1347 | |
1348 | rj54n1->clk = clk_get(dev: &client->dev, NULL); |
1349 | if (IS_ERR(ptr: rj54n1->clk)) { |
1350 | ret = PTR_ERR(ptr: rj54n1->clk); |
1351 | goto err_free_ctrl; |
1352 | } |
1353 | |
1354 | rj54n1->pwup_gpio = gpiod_get_optional(dev: &client->dev, con_id: "powerup" , |
1355 | flags: GPIOD_OUT_LOW); |
1356 | if (IS_ERR(ptr: rj54n1->pwup_gpio)) { |
1357 | dev_info(&client->dev, "Unable to get GPIO \"powerup\": %ld\n" , |
1358 | PTR_ERR(rj54n1->pwup_gpio)); |
1359 | ret = PTR_ERR(ptr: rj54n1->pwup_gpio); |
1360 | goto err_clk_put; |
1361 | } |
1362 | |
1363 | rj54n1->enable_gpio = gpiod_get_optional(dev: &client->dev, con_id: "enable" , |
1364 | flags: GPIOD_OUT_LOW); |
1365 | if (IS_ERR(ptr: rj54n1->enable_gpio)) { |
1366 | dev_info(&client->dev, "Unable to get GPIO \"enable\": %ld\n" , |
1367 | PTR_ERR(rj54n1->enable_gpio)); |
1368 | ret = PTR_ERR(ptr: rj54n1->enable_gpio); |
1369 | goto err_gpio_put; |
1370 | } |
1371 | |
1372 | ret = rj54n1_video_probe(client, priv: rj54n1_priv); |
1373 | if (ret < 0) |
1374 | goto err_gpio_put; |
1375 | |
1376 | ret = v4l2_async_register_subdev(sd: &rj54n1->subdev); |
1377 | if (ret) |
1378 | goto err_gpio_put; |
1379 | |
1380 | return 0; |
1381 | |
1382 | err_gpio_put: |
1383 | if (rj54n1->enable_gpio) |
1384 | gpiod_put(desc: rj54n1->enable_gpio); |
1385 | |
1386 | if (rj54n1->pwup_gpio) |
1387 | gpiod_put(desc: rj54n1->pwup_gpio); |
1388 | |
1389 | err_clk_put: |
1390 | clk_put(clk: rj54n1->clk); |
1391 | |
1392 | err_free_ctrl: |
1393 | v4l2_ctrl_handler_free(hdl: &rj54n1->hdl); |
1394 | |
1395 | return ret; |
1396 | } |
1397 | |
1398 | static void rj54n1_remove(struct i2c_client *client) |
1399 | { |
1400 | struct rj54n1 *rj54n1 = to_rj54n1(client); |
1401 | |
1402 | if (rj54n1->enable_gpio) |
1403 | gpiod_put(desc: rj54n1->enable_gpio); |
1404 | if (rj54n1->pwup_gpio) |
1405 | gpiod_put(desc: rj54n1->pwup_gpio); |
1406 | |
1407 | clk_put(clk: rj54n1->clk); |
1408 | v4l2_ctrl_handler_free(hdl: &rj54n1->hdl); |
1409 | v4l2_async_unregister_subdev(sd: &rj54n1->subdev); |
1410 | } |
1411 | |
1412 | static const struct i2c_device_id rj54n1_id[] = { |
1413 | { "rj54n1cb0c" , 0 }, |
1414 | { } |
1415 | }; |
1416 | MODULE_DEVICE_TABLE(i2c, rj54n1_id); |
1417 | |
1418 | static struct i2c_driver rj54n1_i2c_driver = { |
1419 | .driver = { |
1420 | .name = "rj54n1cb0c" , |
1421 | }, |
1422 | .probe = rj54n1_probe, |
1423 | .remove = rj54n1_remove, |
1424 | .id_table = rj54n1_id, |
1425 | }; |
1426 | |
1427 | module_i2c_driver(rj54n1_i2c_driver); |
1428 | |
1429 | MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver" ); |
1430 | MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>" ); |
1431 | MODULE_LICENSE("GPL v2" ); |
1432 | |