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 */ 113struct rj54n1_datafmt { 114 enum v4l2_mbus_pixelcode code; 115 enum v4l2_colorspace colorspace; 116}; 117 118/* Find a data format by a pixel code in an array */ 119static const struct rj54n1_datafmt *rj54n1_find_datafmt( 120 enum v4l2_mbus_pixelcode 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 131static const struct rj54n1_datafmt rj54n1_colour_fmts[] = { 132 {V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG}, 133 {V4L2_MBUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG}, 134 {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB}, 135 {V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB}, 136 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB}, 137 {V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE, V4L2_COLORSPACE_SRGB}, 138 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB}, 139 {V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE, V4L2_COLORSPACE_SRGB}, 140 {V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB}, 141}; 142 143struct 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 151struct 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 167struct rj54n1_reg_val { 168 u16 reg; 169 u8 val; 170}; 171 172static 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 193static 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 214static const struct rj54n1_reg_val bank_7[] = { 215 {0x70a, 0}, 216 {0x714, 0xff}, 217 {0x715, 0xff}, 218 {0x716, 0x1f}, 219 {0x7FE, 2}, 220}; 221 222static 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 410static const struct rj54n1_reg_val bank_10[] = { 411 {0x10bf, 0x69} 412}; 413 414/* Clock dividers - these are default register values, divider = register + 1 */ 415static 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 423static struct rj54n1 *to_rj54n1(const struct i2c_client *client) 424{ 425 return container_of(i2c_get_clientdata(client), struct rj54n1, subdev); 426} 427 428static 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 444static 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 462static 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 473static 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 488static int rj54n1_enum_fmt(struct v4l2_subdev *sd, unsigned int index, 489 enum v4l2_mbus_pixelcode *code) 490{ 491 if (index >= ARRAY_SIZE(rj54n1_colour_fmts)) 492 return -EINVAL; 493 494 *code = rj54n1_colour_fmts[index].code; 495 return 0; 496} 497 498static int rj54n1_s_stream(struct v4l2_subdev *sd, int enable) 499{ 500 struct i2c_client *client = v4l2_get_subdevdata(sd); 501 502 /* Switch between preview and still shot modes */ 503 return reg_set(client, RJ54N1_STILL_CONTROL, (!enable) << 7, 0x80); 504} 505 506static int rj54n1_set_rect(struct i2c_client *client, 507 u16 reg_x, u16 reg_y, u16 reg_xy, 508 u32 width, u32 height) 509{ 510 int ret; 511 512 ret = reg_write(client, reg_xy, 513 ((width >> 4) & 0x70) | 514 ((height >> 8) & 7)); 515 516 if (!ret) 517 ret = reg_write(client, reg_x, width & 0xff); 518 if (!ret) 519 ret = reg_write(client, reg_y, height & 0xff); 520 521 return ret; 522} 523 524/* 525 * Some commands, specifically certain initialisation sequences, require 526 * a commit operation. 527 */ 528static int rj54n1_commit(struct i2c_client *client) 529{ 530 int ret = reg_write(client, RJ54N1_INIT_START, 1); 531 msleep(10); 532 if (!ret) 533 ret = reg_write(client, RJ54N1_INIT_START, 0); 534 return ret; 535} 536 537static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, 538 s32 *out_w, s32 *out_h); 539 540static int rj54n1_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a) 541{ 542 struct i2c_client *client = v4l2_get_subdevdata(sd); 543 struct rj54n1 *rj54n1 = to_rj54n1(client); 544 const struct v4l2_rect *rect = &a->c; 545 int dummy = 0, output_w, output_h, 546 input_w = rect->width, input_h = rect->height; 547 int ret; 548 549 /* arbitrary minimum width and height, edges unimportant */ 550 soc_camera_limit_side(&dummy, &input_w, 551 RJ54N1_COLUMN_SKIP, 8, RJ54N1_MAX_WIDTH); 552 553 soc_camera_limit_side(&dummy, &input_h, 554 RJ54N1_ROW_SKIP, 8, RJ54N1_MAX_HEIGHT); 555 556 output_w = (input_w * 1024 + rj54n1->resize / 2) / rj54n1->resize; 557 output_h = (input_h * 1024 + rj54n1->resize / 2) / rj54n1->resize; 558 559 dev_dbg(&client->dev, "Scaling for %dx%d : %u = %dx%d\n", 560 input_w, input_h, rj54n1->resize, output_w, output_h); 561 562 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h); 563 if (ret < 0) 564 return ret; 565 566 rj54n1->width = output_w; 567 rj54n1->height = output_h; 568 rj54n1->resize = ret; 569 rj54n1->rect.width = input_w; 570 rj54n1->rect.height = input_h; 571 572 return 0; 573} 574 575static int rj54n1_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) 576{ 577 struct i2c_client *client = v4l2_get_subdevdata(sd); 578 struct rj54n1 *rj54n1 = to_rj54n1(client); 579 580 a->c = rj54n1->rect; 581 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 582 583 return 0; 584} 585 586static int rj54n1_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) 587{ 588 a->bounds.left = RJ54N1_COLUMN_SKIP; 589 a->bounds.top = RJ54N1_ROW_SKIP; 590 a->bounds.width = RJ54N1_MAX_WIDTH; 591 a->bounds.height = RJ54N1_MAX_HEIGHT; 592 a->defrect = a->bounds; 593 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 594 a->pixelaspect.numerator = 1; 595 a->pixelaspect.denominator = 1; 596 597 return 0; 598} 599 600static int rj54n1_g_fmt(struct v4l2_subdev *sd, 601 struct v4l2_mbus_framefmt *mf) 602{ 603 struct i2c_client *client = v4l2_get_subdevdata(sd); 604 struct rj54n1 *rj54n1 = to_rj54n1(client); 605 606 mf->code = rj54n1->fmt->code; 607 mf->colorspace = rj54n1->fmt->colorspace; 608 mf->field = V4L2_FIELD_NONE; 609 mf->width = rj54n1->width; 610 mf->height = rj54n1->height; 611 612 return 0; 613} 614 615/* 616 * The actual geometry configuration routine. It scales the input window into 617 * the output one, updates the window sizes and returns an error or the resize 618 * coefficient on success. Note: we only use the "Fixed Scaling" on this camera. 619 */ 620static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, 621 s32 *out_w, s32 *out_h) 622{ 623 struct i2c_client *client = v4l2_get_subdevdata(sd); 624 struct rj54n1 *rj54n1 = to_rj54n1(client); 625 unsigned int skip, resize, input_w = *in_w, input_h = *in_h, 626 output_w = *out_w, output_h = *out_h; 627 u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom; 628 unsigned int peak, peak_50, peak_60; 629 int ret; 630 631 /* 632 * We have a problem with crops, where the window is larger than 512x384 633 * and output window is larger than a half of the input one. In this 634 * case we have to either reduce the input window to equal or below 635 * 512x384 or the output window to equal or below 1/2 of the input. 636 */ 637 if (output_w > max(512U, input_w / 2)) { 638 if (2 * output_w > RJ54N1_MAX_WIDTH) { 639 input_w = RJ54N1_MAX_WIDTH; 640 output_w = RJ54N1_MAX_WIDTH / 2; 641 } else { 642 input_w = output_w * 2; 643 } 644 645 dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n", 646 input_w, output_w); 647 } 648 649 if (output_h > max(384U, input_h / 2)) { 650 if (2 * output_h > RJ54N1_MAX_HEIGHT) { 651 input_h = RJ54N1_MAX_HEIGHT; 652 output_h = RJ54N1_MAX_HEIGHT / 2; 653 } else { 654 input_h = output_h * 2; 655 } 656 657 dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n", 658 input_h, output_h); 659 } 660 661 /* Idea: use the read mode for snapshots, handle separate geometries */ 662 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L, 663 RJ54N1_Y_OUTPUT_SIZE_S_L, 664 RJ54N1_XY_OUTPUT_SIZE_S_H, output_w, output_h); 665 if (!ret) 666 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L, 667 RJ54N1_Y_OUTPUT_SIZE_P_L, 668 RJ54N1_XY_OUTPUT_SIZE_P_H, output_w, output_h); 669 670 if (ret < 0) 671 return ret; 672 673 if (output_w > input_w && output_h > input_h) { 674 input_w = output_w; 675 input_h = output_h; 676 677 resize = 1024; 678 } else { 679 unsigned int resize_x, resize_y; 680 resize_x = (input_w * 1024 + output_w / 2) / output_w; 681 resize_y = (input_h * 1024 + output_h / 2) / output_h; 682 683 /* We want max(resize_x, resize_y), check if it still fits */ 684 if (resize_x > resize_y && 685 (output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT) 686 resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) / 687 output_h; 688 else if (resize_y > resize_x && 689 (output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH) 690 resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) / 691 output_w; 692 else 693 resize = max(resize_x, resize_y); 694 695 /* Prohibited value ranges */ 696 switch (resize) { 697 case 2040 ... 2047: 698 resize = 2039; 699 break; 700 case 4080 ... 4095: 701 resize = 4079; 702 break; 703 case 8160 ... 8191: 704 resize = 8159; 705 break; 706 case 16320 ... 16384: 707 resize = 16319; 708 } 709 } 710 711 /* Set scaling */ 712 ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, resize & 0xff); 713 if (!ret) 714 ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, resize >> 8); 715 716 if (ret < 0) 717 return ret; 718 719 /* 720 * Configure a skipping bitmask. The sensor will select a skipping value 721 * among set bits automatically. This is very unclear in the datasheet 722 * too. I was told, in this register one enables all skipping values, 723 * that are required for a specific resize, and the camera selects 724 * automatically, which ones to use. But it is unclear how to identify, 725 * which cropping values are needed. Secondly, why don't we just set all 726 * bits and let the camera choose? Would it increase processing time and 727 * reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to 728 * improve the image quality or stability for larger frames (see comment 729 * above), but I didn't check the framerate. 730 */ 731 skip = min(resize / 1024, 15U); 732 733 inc_sel = 1 << skip; 734 735 if (inc_sel <= 2) 736 inc_sel = 0xc; 737 else if (resize & 1023 && skip < 15) 738 inc_sel |= 1 << (skip + 1); 739 740 ret = reg_write(client, RJ54N1_INC_USE_SEL_L, inc_sel & 0xfc); 741 if (!ret) 742 ret = reg_write(client, RJ54N1_INC_USE_SEL_H, inc_sel >> 8); 743 744 if (!rj54n1->auto_wb) { 745 /* Auto white balance window */ 746 wb_left = output_w / 16; 747 wb_right = (3 * output_w / 4 - 3) / 4; 748 wb_top = output_h / 16; 749 wb_bottom = (3 * output_h / 4 - 3) / 4; 750 wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) | 751 ((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1); 752 753 if (!ret) 754 ret = reg_write(client, RJ54N1_BIT8_WB, wb_bit8); 755 if (!ret) 756 ret = reg_write(client, RJ54N1_HCAPS_WB, wb_left); 757 if (!ret) 758 ret = reg_write(client, RJ54N1_VCAPS_WB, wb_top); 759 if (!ret) 760 ret = reg_write(client, RJ54N1_HCAPE_WB, wb_right); 761 if (!ret) 762 ret = reg_write(client, RJ54N1_VCAPE_WB, wb_bottom); 763 } 764 765 /* Antiflicker */ 766 peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz / 767 10000; 768 peak_50 = peak / 6; 769 peak_60 = peak / 5; 770 771 if (!ret) 772 ret = reg_write(client, RJ54N1_PEAK_H, 773 ((peak_50 >> 4) & 0xf0) | (peak_60 >> 8)); 774 if (!ret) 775 ret = reg_write(client, RJ54N1_PEAK_50, peak_50); 776 if (!ret) 777 ret = reg_write(client, RJ54N1_PEAK_60, peak_60); 778 if (!ret) 779 ret = reg_write(client, RJ54N1_PEAK_DIFF, peak / 150); 780 781 /* Start resizing */ 782 if (!ret) 783 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, 784 RESIZE_HOLD_SEL | RESIZE_GO | 1); 785 786 if (ret < 0) 787 return ret; 788 789 /* Constant taken from manufacturer's example */ 790 msleep(230); 791 792 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1); 793 if (ret < 0) 794 return ret; 795 796 *in_w = (output_w * resize + 512) / 1024; 797 *in_h = (output_h * resize + 512) / 1024; 798 *out_w = output_w; 799 *out_h = output_h; 800 801 dev_dbg(&client->dev, "Scaled for %dx%d : %u = %ux%u, skip %u\n", 802 *in_w, *in_h, resize, output_w, output_h, skip); 803 804 return resize; 805} 806 807static int rj54n1_set_clock(struct i2c_client *client) 808{ 809 struct rj54n1 *rj54n1 = to_rj54n1(client); 810 int ret; 811 812 /* Enable external clock */ 813 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY); 814 /* Leave stand-by. Note: use this when implementing suspend / resume */ 815 if (!ret) 816 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK); 817 818 if (!ret) 819 ret = reg_write(client, RJ54N1_PLL_L, PLL_L); 820 if (!ret) 821 ret = reg_write(client, RJ54N1_PLL_N, PLL_N); 822 823 /* TGCLK dividers */ 824 if (!ret) 825 ret = reg_write(client, RJ54N1_RATIO_TG, 826 rj54n1->clk_div.ratio_tg); 827 if (!ret) 828 ret = reg_write(client, RJ54N1_RATIO_T, 829 rj54n1->clk_div.ratio_t); 830 if (!ret) 831 ret = reg_write(client, RJ54N1_RATIO_R, 832 rj54n1->clk_div.ratio_r); 833 834 /* Enable TGCLK & RAMP */ 835 if (!ret) 836 ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, 3); 837 838 /* Disable clock output */ 839 if (!ret) 840 ret = reg_write(client, RJ54N1_OCLK_DSP, 0); 841 842 /* Set divisors */ 843 if (!ret) 844 ret = reg_write(client, RJ54N1_RATIO_OP, 845 rj54n1->clk_div.ratio_op); 846 if (!ret) 847 ret = reg_write(client, RJ54N1_RATIO_O, 848 rj54n1->clk_div.ratio_o); 849 850 /* Enable OCLK */ 851 if (!ret) 852 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1); 853 854 /* Use PLL for Timing Generator, write 2 to reserved bits */ 855 if (!ret) 856 ret = reg_write(client, RJ54N1_TG_BYPASS, 2); 857 858 /* Take sensor out of reset */ 859 if (!ret) 860 ret = reg_write(client, RJ54N1_RESET_STANDBY, 861 E_EXCLK | SEN_RSTX); 862 /* Enable PLL */ 863 if (!ret) 864 ret = reg_write(client, RJ54N1_PLL_EN, 1); 865 866 /* Wait for PLL to stabilise */ 867 msleep(10); 868 869 /* Enable clock to frequency divider */ 870 if (!ret) 871 ret = reg_write(client, RJ54N1_CLK_RST, 1); 872 873 if (!ret) 874 ret = reg_read(client, RJ54N1_CLK_RST); 875 if (ret != 1) { 876 dev_err(&client->dev, 877 "Resetting RJ54N1CB0C clock failed: %d!\n", ret); 878 return -EIO; 879 } 880 881 /* Start the PLL */ 882 ret = reg_set(client, RJ54N1_OCLK_DSP, 1, 1); 883 884 /* Enable OCLK */ 885 if (!ret) 886 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1); 887 888 return ret; 889} 890 891static int rj54n1_reg_init(struct i2c_client *client) 892{ 893 struct rj54n1 *rj54n1 = to_rj54n1(client); 894 int ret = rj54n1_set_clock(client); 895 896 if (!ret) 897 ret = reg_write_multiple(client, bank_7, ARRAY_SIZE(bank_7)); 898 if (!ret) 899 ret = reg_write_multiple(client, bank_10, ARRAY_SIZE(bank_10)); 900 901 /* Set binning divisors */ 902 if (!ret) 903 ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, 3 | (7 << 4)); 904 if (!ret) 905 ret = reg_write(client, RJ54N1_SCALE_4_LEV, 0xf); 906 907 /* Switch to fixed resize mode */ 908 if (!ret) 909 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, 910 RESIZE_HOLD_SEL | 1); 911 912 /* Set gain */ 913 if (!ret) 914 ret = reg_write(client, RJ54N1_Y_GAIN, 0x84); 915 916 /* 917 * Mirror the image back: default is upside down and left-to-right... 918 * Set manual preview / still shot switching 919 */ 920 if (!ret) 921 ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, 0x27); 922 923 if (!ret) 924 ret = reg_write_multiple(client, bank_4, ARRAY_SIZE(bank_4)); 925 926 /* Auto exposure area */ 927 if (!ret) 928 ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, 0x80); 929 /* Check current auto WB config */ 930 if (!ret) 931 ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I); 932 if (ret >= 0) { 933 rj54n1->auto_wb = ret & 0x80; 934 ret = reg_write_multiple(client, bank_5, ARRAY_SIZE(bank_5)); 935 } 936 if (!ret) 937 ret = reg_write_multiple(client, bank_8, ARRAY_SIZE(bank_8)); 938 939 if (!ret) 940 ret = reg_write(client, RJ54N1_RESET_STANDBY, 941 E_EXCLK | DSP_RSTX | SEN_RSTX); 942 943 /* Commit init */ 944 if (!ret) 945 ret = rj54n1_commit(client); 946 947 /* Take DSP, TG, sensor out of reset */ 948 if (!ret) 949 ret = reg_write(client, RJ54N1_RESET_STANDBY, 950 E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX); 951 952 /* Start register update? Same register as 0x?FE in many bank_* sets */ 953 if (!ret) 954 ret = reg_write(client, RJ54N1_FWFLG, 2); 955 956 /* Constant taken from manufacturer's example */ 957 msleep(700); 958 959 return ret; 960} 961 962static int rj54n1_try_fmt(struct v4l2_subdev *sd, 963 struct v4l2_mbus_framefmt *mf) 964{ 965 struct i2c_client *client = v4l2_get_subdevdata(sd); 966 struct rj54n1 *rj54n1 = to_rj54n1(client); 967 const struct rj54n1_datafmt *fmt; 968 int align = mf->code == V4L2_MBUS_FMT_SBGGR10_1X10 || 969 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE || 970 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE || 971 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE || 972 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE; 973 974 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n", 975 __func__, mf->code, mf->width, mf->height); 976 977 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts, 978 ARRAY_SIZE(rj54n1_colour_fmts)); 979 if (!fmt) { 980 fmt = rj54n1->fmt; 981 mf->code = fmt->code; 982 } 983 984 mf->field = V4L2_FIELD_NONE; 985 mf->colorspace = fmt->colorspace; 986 987 v4l_bound_align_image(&mf->width, 112, RJ54N1_MAX_WIDTH, align, 988 &mf->height, 84, RJ54N1_MAX_HEIGHT, align, 0); 989 990 return 0; 991} 992 993static int rj54n1_s_fmt(struct v4l2_subdev *sd, 994 struct v4l2_mbus_framefmt *mf) 995{ 996 struct i2c_client *client = v4l2_get_subdevdata(sd); 997 struct rj54n1 *rj54n1 = to_rj54n1(client); 998 const struct rj54n1_datafmt *fmt; 999 int output_w, output_h, max_w, max_h, 1000 input_w = rj54n1->rect.width, input_h = rj54n1->rect.height; 1001 int ret; 1002 1003 /* 1004 * The host driver can call us without .try_fmt(), so, we have to take 1005 * care ourseleves 1006 */ 1007 rj54n1_try_fmt(sd, mf); 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 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n", 1024 __func__, mf->code, mf->width, mf->height); 1025 1026 /* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */ 1027 switch (mf->code) { 1028 case V4L2_MBUS_FMT_YUYV8_2X8: 1029 ret = reg_write(client, RJ54N1_OUT_SEL, 0); 1030 if (!ret) 1031 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1032 break; 1033 case V4L2_MBUS_FMT_YVYU8_2X8: 1034 ret = reg_write(client, RJ54N1_OUT_SEL, 0); 1035 if (!ret) 1036 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1037 break; 1038 case V4L2_MBUS_FMT_RGB565_2X8_LE: 1039 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11); 1040 if (!ret) 1041 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1042 break; 1043 case V4L2_MBUS_FMT_RGB565_2X8_BE: 1044 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11); 1045 if (!ret) 1046 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1047 break; 1048 case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE: 1049 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1050 if (!ret) 1051 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1052 if (!ret) 1053 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0); 1054 break; 1055 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE: 1056 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1057 if (!ret) 1058 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1059 if (!ret) 1060 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8); 1061 break; 1062 case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE: 1063 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1064 if (!ret) 1065 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1066 if (!ret) 1067 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0); 1068 break; 1069 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE: 1070 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1071 if (!ret) 1072 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1073 if (!ret) 1074 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8); 1075 break; 1076 case V4L2_MBUS_FMT_SBGGR10_1X10: 1077 ret = reg_write(client, RJ54N1_OUT_SEL, 5); 1078 break; 1079 default: 1080 ret = -EINVAL; 1081 } 1082 1083 /* Special case: a raw mode with 10 bits of data per clock tick */ 1084 if (!ret) 1085 ret = reg_set(client, RJ54N1_OCLK_SEL_EN, 1086 (mf->code == V4L2_MBUS_FMT_SBGGR10_1X10) << 1, 2); 1087 1088 if (ret < 0) 1089 return ret; 1090 1091 /* Supported scales 1:1 >= scale > 1:16 */ 1092 max_w = mf->width * (16 * 1024 - 1) / 1024; 1093 if (input_w > max_w) 1094 input_w = max_w; 1095 max_h = mf->height * (16 * 1024 - 1) / 1024; 1096 if (input_h > max_h) 1097 input_h = max_h; 1098 1099 output_w = mf->width; 1100 output_h = mf->height; 1101 1102 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h); 1103 if (ret < 0) 1104 return ret; 1105 1106 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts, 1107 ARRAY_SIZE(rj54n1_colour_fmts)); 1108 1109 rj54n1->fmt = fmt; 1110 rj54n1->resize = ret; 1111 rj54n1->rect.width = input_w; 1112 rj54n1->rect.height = input_h; 1113 rj54n1->width = output_w; 1114 rj54n1->height = output_h; 1115 1116 mf->width = output_w; 1117 mf->height = output_h; 1118 mf->field = V4L2_FIELD_NONE; 1119 mf->colorspace = fmt->colorspace; 1120 1121 return 0; 1122} 1123 1124#ifdef CONFIG_VIDEO_ADV_DEBUG 1125static int rj54n1_g_register(struct v4l2_subdev *sd, 1126 struct v4l2_dbg_register *reg) 1127{ 1128 struct i2c_client *client = v4l2_get_subdevdata(sd); 1129 1130 if (reg->reg < 0x400 || reg->reg > 0x1fff) 1131 /* Registers > 0x0800 are only available from Sharp support */ 1132 return -EINVAL; 1133 1134 reg->size = 1; 1135 reg->val = reg_read(client, reg->reg); 1136 1137 if (reg->val > 0xff) 1138 return -EIO; 1139 1140 return 0; 1141} 1142 1143static int rj54n1_s_register(struct v4l2_subdev *sd, 1144 const struct v4l2_dbg_register *reg) 1145{ 1146 struct i2c_client *client = v4l2_get_subdevdata(sd); 1147 1148 if (reg->reg < 0x400 || reg->reg > 0x1fff) 1149 /* Registers >= 0x0800 are only available from Sharp support */ 1150 return -EINVAL; 1151 1152 if (reg_write(client, reg->reg, reg->val) < 0) 1153 return -EIO; 1154 1155 return 0; 1156} 1157#endif 1158 1159static int rj54n1_s_power(struct v4l2_subdev *sd, int on) 1160{ 1161 struct i2c_client *client = v4l2_get_subdevdata(sd); 1162 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); 1163 struct rj54n1 *rj54n1 = to_rj54n1(client); 1164 1165 return soc_camera_set_power(&client->dev, ssdd, rj54n1->clk, on); 1166} 1167 1168static int rj54n1_s_ctrl(struct v4l2_ctrl *ctrl) 1169{ 1170 struct rj54n1 *rj54n1 = container_of(ctrl->handler, struct rj54n1, hdl); 1171 struct v4l2_subdev *sd = &rj54n1->subdev; 1172 struct i2c_client *client = v4l2_get_subdevdata(sd); 1173 int data; 1174 1175 switch (ctrl->id) { 1176 case V4L2_CID_VFLIP: 1177 if (ctrl->val) 1178 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 1); 1179 else 1180 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 1, 1); 1181 if (data < 0) 1182 return -EIO; 1183 return 0; 1184 case V4L2_CID_HFLIP: 1185 if (ctrl->val) 1186 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 2); 1187 else 1188 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 2, 2); 1189 if (data < 0) 1190 return -EIO; 1191 return 0; 1192 case V4L2_CID_GAIN: 1193 if (reg_write(client, RJ54N1_Y_GAIN, ctrl->val * 2) < 0) 1194 return -EIO; 1195 return 0; 1196 case V4L2_CID_AUTO_WHITE_BALANCE: 1197 /* Auto WB area - whole image */ 1198 if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, ctrl->val << 7, 1199 0x80) < 0) 1200 return -EIO; 1201 rj54n1->auto_wb = ctrl->val; 1202 return 0; 1203 } 1204 1205 return -EINVAL; 1206} 1207 1208static const struct v4l2_ctrl_ops rj54n1_ctrl_ops = { 1209 .s_ctrl = rj54n1_s_ctrl, 1210}; 1211 1212static struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = { 1213#ifdef CONFIG_VIDEO_ADV_DEBUG 1214 .g_register = rj54n1_g_register, 1215 .s_register = rj54n1_s_register, 1216#endif 1217 .s_power = rj54n1_s_power, 1218}; 1219 1220static int rj54n1_g_mbus_config(struct v4l2_subdev *sd, 1221 struct v4l2_mbus_config *cfg) 1222{ 1223 struct i2c_client *client = v4l2_get_subdevdata(sd); 1224 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); 1225 1226 cfg->flags = 1227 V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING | 1228 V4L2_MBUS_MASTER | V4L2_MBUS_DATA_ACTIVE_HIGH | 1229 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH; 1230 cfg->type = V4L2_MBUS_PARALLEL; 1231 cfg->flags = soc_camera_apply_board_flags(ssdd, cfg); 1232 1233 return 0; 1234} 1235 1236static int rj54n1_s_mbus_config(struct v4l2_subdev *sd, 1237 const struct v4l2_mbus_config *cfg) 1238{ 1239 struct i2c_client *client = v4l2_get_subdevdata(sd); 1240 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); 1241 1242 /* Figures 2.5-1 to 2.5-3 - default falling pixclk edge */ 1243 if (soc_camera_apply_board_flags(ssdd, cfg) & 1244 V4L2_MBUS_PCLK_SAMPLE_RISING) 1245 return reg_write(client, RJ54N1_OUT_SIGPO, 1 << 4); 1246 else 1247 return reg_write(client, RJ54N1_OUT_SIGPO, 0); 1248} 1249 1250static struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = { 1251 .s_stream = rj54n1_s_stream, 1252 .s_mbus_fmt = rj54n1_s_fmt, 1253 .g_mbus_fmt = rj54n1_g_fmt, 1254 .try_mbus_fmt = rj54n1_try_fmt, 1255 .enum_mbus_fmt = rj54n1_enum_fmt, 1256 .g_crop = rj54n1_g_crop, 1257 .s_crop = rj54n1_s_crop, 1258 .cropcap = rj54n1_cropcap, 1259 .g_mbus_config = rj54n1_g_mbus_config, 1260 .s_mbus_config = rj54n1_s_mbus_config, 1261}; 1262 1263static struct v4l2_subdev_ops rj54n1_subdev_ops = { 1264 .core = &rj54n1_subdev_core_ops, 1265 .video = &rj54n1_subdev_video_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 */ 1272static 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 1304done: 1305 rj54n1_s_power(&rj54n1->subdev, 0); 1306 return ret; 1307} 1308 1309static 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); 1370eclkget: 1371 v4l2_ctrl_handler_free(&rj54n1->hdl); 1372 } 1373 1374 return ret; 1375} 1376 1377static 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 1391static const struct i2c_device_id rj54n1_id[] = { 1392 { "rj54n1cb0c", 0 }, 1393 { } 1394}; 1395MODULE_DEVICE_TABLE(i2c, rj54n1_id); 1396 1397static 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 1406module_i2c_driver(rj54n1_i2c_driver); 1407 1408MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver"); 1409MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); 1410MODULE_LICENSE("GPL v2"); 1411