1/* 2 * Driver for RJ54N1CB0C CMOS Image Sensor from Sharp 3 * 4 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11#include <linux/delay.h> 12#include <linux/i2c.h> 13#include <linux/slab.h> 14#include <linux/videodev2.h> 15 16#include <media/rj54n1cb0c.h> 17#include <media/soc_camera.h> 18#include <media/soc_mediabus.h> 19#include <media/v4l2-subdev.h> 20#include <media/v4l2-chip-ident.h> 21 22#define RJ54N1_DEV_CODE 0x0400 23#define RJ54N1_DEV_CODE2 0x0401 24#define RJ54N1_OUT_SEL 0x0403 25#define RJ54N1_XY_OUTPUT_SIZE_S_H 0x0404 26#define RJ54N1_X_OUTPUT_SIZE_S_L 0x0405 27#define RJ54N1_Y_OUTPUT_SIZE_S_L 0x0406 28#define RJ54N1_XY_OUTPUT_SIZE_P_H 0x0407 29#define RJ54N1_X_OUTPUT_SIZE_P_L 0x0408 30#define RJ54N1_Y_OUTPUT_SIZE_P_L 0x0409 31#define RJ54N1_LINE_LENGTH_PCK_S_H 0x040a 32#define RJ54N1_LINE_LENGTH_PCK_S_L 0x040b 33#define RJ54N1_LINE_LENGTH_PCK_P_H 0x040c 34#define RJ54N1_LINE_LENGTH_PCK_P_L 0x040d 35#define RJ54N1_RESIZE_N 0x040e 36#define RJ54N1_RESIZE_N_STEP 0x040f 37#define RJ54N1_RESIZE_STEP 0x0410 38#define RJ54N1_RESIZE_HOLD_H 0x0411 39#define RJ54N1_RESIZE_HOLD_L 0x0412 40#define RJ54N1_H_OBEN_OFS 0x0413 41#define RJ54N1_V_OBEN_OFS 0x0414 42#define RJ54N1_RESIZE_CONTROL 0x0415 43#define RJ54N1_STILL_CONTROL 0x0417 44#define RJ54N1_INC_USE_SEL_H 0x0425 45#define RJ54N1_INC_USE_SEL_L 0x0426 46#define RJ54N1_MIRROR_STILL_MODE 0x0427 47#define RJ54N1_INIT_START 0x0428 48#define RJ54N1_SCALE_1_2_LEV 0x0429 49#define RJ54N1_SCALE_4_LEV 0x042a 50#define RJ54N1_Y_GAIN 0x04d8 51#define RJ54N1_APT_GAIN_UP 0x04fa 52#define RJ54N1_RA_SEL_UL 0x0530 53#define RJ54N1_BYTE_SWAP 0x0531 54#define RJ54N1_OUT_SIGPO 0x053b 55#define RJ54N1_WB_SEL_WEIGHT_I 0x054e 56#define RJ54N1_BIT8_WB 0x0569 57#define RJ54N1_HCAPS_WB 0x056a 58#define RJ54N1_VCAPS_WB 0x056b 59#define RJ54N1_HCAPE_WB 0x056c 60#define RJ54N1_VCAPE_WB 0x056d 61#define RJ54N1_EXPOSURE_CONTROL 0x058c 62#define RJ54N1_FRAME_LENGTH_S_H 0x0595 63#define RJ54N1_FRAME_LENGTH_S_L 0x0596 64#define RJ54N1_FRAME_LENGTH_P_H 0x0597 65#define RJ54N1_FRAME_LENGTH_P_L 0x0598 66#define RJ54N1_PEAK_H 0x05b7 67#define RJ54N1_PEAK_50 0x05b8 68#define RJ54N1_PEAK_60 0x05b9 69#define RJ54N1_PEAK_DIFF 0x05ba 70#define RJ54N1_IOC 0x05ef 71#define RJ54N1_TG_BYPASS 0x0700 72#define RJ54N1_PLL_L 0x0701 73#define RJ54N1_PLL_N 0x0702 74#define RJ54N1_PLL_EN 0x0704 75#define RJ54N1_RATIO_TG 0x0706 76#define RJ54N1_RATIO_T 0x0707 77#define RJ54N1_RATIO_R 0x0708 78#define RJ54N1_RAMP_TGCLK_EN 0x0709 79#define RJ54N1_OCLK_DSP 0x0710 80#define RJ54N1_RATIO_OP 0x0711 81#define RJ54N1_RATIO_O 0x0712 82#define RJ54N1_OCLK_SEL_EN 0x0713 83#define RJ54N1_CLK_RST 0x0717 84#define RJ54N1_RESET_STANDBY 0x0718 85#define RJ54N1_FWFLG 0x07fe 86 87#define E_EXCLK (1 << 7) 88#define SOFT_STDBY (1 << 4) 89#define SEN_RSTX (1 << 2) 90#define TG_RSTX (1 << 1) 91#define DSP_RSTX (1 << 0) 92 93#define RESIZE_HOLD_SEL (1 << 2) 94#define RESIZE_GO (1 << 1) 95 96/* 97 * When cropping, the camera automatically centers the cropped region, there 98 * doesn't seem to be a way to specify an explicit location of the rectangle. 99 */ 100#define RJ54N1_COLUMN_SKIP 0 101#define RJ54N1_ROW_SKIP 0 102#define RJ54N1_MAX_WIDTH 1600 103#define RJ54N1_MAX_HEIGHT 1200 104 105#define PLL_L 2 106#define PLL_N 0x31 107 108/* I2C addresses: 0x50, 0x51, 0x60, 0x61 */ 109 110/* RJ54N1CB0C has only one fixed colorspace per pixelcode */ 111struct 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 */ 117static 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 129static const struct rj54n1_datafmt rj54n1_colour_fmts[] = { 130 {V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG}, 131 {V4L2_MBUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG}, 132 {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB}, 133 {V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB}, 134 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB}, 135 {V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE, V4L2_COLORSPACE_SRGB}, 136 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB}, 137 {V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE, V4L2_COLORSPACE_SRGB}, 138 {V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB}, 139}; 140 141struct 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 149struct 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 163struct rj54n1_reg_val { 164 u16 reg; 165 u8 val; 166}; 167 168static 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 189static 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 210static const struct rj54n1_reg_val bank_7[] = { 211 {0x70a, 0}, 212 {0x714, 0xff}, 213 {0x715, 0xff}, 214 {0x716, 0x1f}, 215 {0x7FE, 2}, 216}; 217 218static 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 406static const struct rj54n1_reg_val bank_10[] = { 407 {0x10bf, 0x69} 408}; 409 410/* Clock dividers - these are default register values, divider = register + 1 */ 411static 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 419static struct rj54n1 *to_rj54n1(const struct i2c_client *client) 420{ 421 return container_of(i2c_get_clientdata(client), struct rj54n1, subdev); 422} 423 424static 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 440static 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 458static 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 469static 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 484static int rj54n1_enum_fmt(struct v4l2_subdev *sd, unsigned int index, 485 enum v4l2_mbus_pixelcode *code) 486{ 487 if (index >= ARRAY_SIZE(rj54n1_colour_fmts)) 488 return -EINVAL; 489 490 *code = rj54n1_colour_fmts[index].code; 491 return 0; 492} 493 494static 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 502static 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 515static 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 527static 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 */ 549static 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 558static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, 559 s32 *out_w, s32 *out_h); 560 561static 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 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 %dx%d : %u = %dx%d\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 596static 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 607static 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 621static 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 */ 641static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, 642 s32 *out_w, s32 *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, 15U); 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 %dx%d : %u = %ux%u, skip %u\n", 823 *in_w, *in_h, resize, output_w, output_h, skip); 824 825 return resize; 826} 827 828static 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 912static 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 983static 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 1014static 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 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: 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: 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 1145static 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 1163static 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 1185static 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 1205static 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 1242static 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 1249static 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 1283static 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 1330static 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 1340static 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 1351static 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 */ 1360static 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 1391ei2c: 1392 return ret; 1393} 1394 1395static 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 kfree(rj54n1); 1448 return ret; 1449 } 1450 1451 return ret; 1452} 1453 1454static int rj54n1_remove(struct i2c_client *client) 1455{ 1456 struct rj54n1 *rj54n1 = to_rj54n1(client); 1457 struct soc_camera_device *icd = client->dev.platform_data; 1458 struct soc_camera_link *icl = to_soc_camera_link(icd); 1459 1460 icd->ops = NULL; 1461 if (icl->free_bus) 1462 icl->free_bus(icl); 1463 client->driver = NULL; 1464 kfree(rj54n1); 1465 1466 return 0; 1467} 1468 1469static const struct i2c_device_id rj54n1_id[] = { 1470 { "rj54n1cb0c", 0 }, 1471 { } 1472}; 1473MODULE_DEVICE_TABLE(i2c, rj54n1_id); 1474 1475static struct i2c_driver rj54n1_i2c_driver = { 1476 .driver = { 1477 .name = "rj54n1cb0c", 1478 }, 1479 .probe = rj54n1_probe, 1480 .remove = rj54n1_remove, 1481 .id_table = rj54n1_id, 1482}; 1483 1484static int __init rj54n1_mod_init(void) 1485{ 1486 return i2c_add_driver(&rj54n1_i2c_driver); 1487} 1488 1489static void __exit rj54n1_mod_exit(void) 1490{ 1491 i2c_del_driver(&rj54n1_i2c_driver); 1492} 1493 1494module_init(rj54n1_mod_init); 1495module_exit(rj54n1_mod_exit); 1496 1497MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver"); 1498MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); 1499MODULE_LICENSE("GPL v2"); 1500