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 u32 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 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 131static 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 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_mbus_code(struct v4l2_subdev *sd, 489 struct v4l2_subdev_pad_config *cfg, 490 struct v4l2_subdev_mbus_code_enum *code) 491{ 492 if (code->pad || code->index >= ARRAY_SIZE(rj54n1_colour_fmts)) 493 return -EINVAL; 494 495 code->code = rj54n1_colour_fmts[code->index].code; 496 return 0; 497} 498 499static int rj54n1_s_stream(struct v4l2_subdev *sd, int enable) 500{ 501 struct i2c_client *client = v4l2_get_subdevdata(sd); 502 503 /* Switch between preview and still shot modes */ 504 return reg_set(client, RJ54N1_STILL_CONTROL, (!enable) << 7, 0x80); 505} 506 507static int rj54n1_set_rect(struct i2c_client *client, 508 u16 reg_x, u16 reg_y, u16 reg_xy, 509 u32 width, u32 height) 510{ 511 int ret; 512 513 ret = reg_write(client, reg_xy, 514 ((width >> 4) & 0x70) | 515 ((height >> 8) & 7)); 516 517 if (!ret) 518 ret = reg_write(client, reg_x, width & 0xff); 519 if (!ret) 520 ret = reg_write(client, reg_y, height & 0xff); 521 522 return ret; 523} 524 525/* 526 * Some commands, specifically certain initialisation sequences, require 527 * a commit operation. 528 */ 529static int rj54n1_commit(struct i2c_client *client) 530{ 531 int ret = reg_write(client, RJ54N1_INIT_START, 1); 532 msleep(10); 533 if (!ret) 534 ret = reg_write(client, RJ54N1_INIT_START, 0); 535 return ret; 536} 537 538static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, 539 s32 *out_w, s32 *out_h); 540 541static int rj54n1_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a) 542{ 543 struct i2c_client *client = v4l2_get_subdevdata(sd); 544 struct rj54n1 *rj54n1 = to_rj54n1(client); 545 const struct v4l2_rect *rect = &a->c; 546 int dummy = 0, output_w, output_h, 547 input_w = rect->width, input_h = rect->height; 548 int ret; 549 550 /* arbitrary minimum width and height, edges unimportant */ 551 soc_camera_limit_side(&dummy, &input_w, 552 RJ54N1_COLUMN_SKIP, 8, RJ54N1_MAX_WIDTH); 553 554 soc_camera_limit_side(&dummy, &input_h, 555 RJ54N1_ROW_SKIP, 8, RJ54N1_MAX_HEIGHT); 556 557 output_w = (input_w * 1024 + rj54n1->resize / 2) / rj54n1->resize; 558 output_h = (input_h * 1024 + rj54n1->resize / 2) / rj54n1->resize; 559 560 dev_dbg(&client->dev, "Scaling for %dx%d : %u = %dx%d\n", 561 input_w, input_h, rj54n1->resize, output_w, output_h); 562 563 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h); 564 if (ret < 0) 565 return ret; 566 567 rj54n1->width = output_w; 568 rj54n1->height = output_h; 569 rj54n1->resize = ret; 570 rj54n1->rect.width = input_w; 571 rj54n1->rect.height = input_h; 572 573 return 0; 574} 575 576static int rj54n1_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) 577{ 578 struct i2c_client *client = v4l2_get_subdevdata(sd); 579 struct rj54n1 *rj54n1 = to_rj54n1(client); 580 581 a->c = rj54n1->rect; 582 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 583 584 return 0; 585} 586 587static int rj54n1_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) 588{ 589 a->bounds.left = RJ54N1_COLUMN_SKIP; 590 a->bounds.top = RJ54N1_ROW_SKIP; 591 a->bounds.width = RJ54N1_MAX_WIDTH; 592 a->bounds.height = RJ54N1_MAX_HEIGHT; 593 a->defrect = a->bounds; 594 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 595 a->pixelaspect.numerator = 1; 596 a->pixelaspect.denominator = 1; 597 598 return 0; 599} 600 601static int rj54n1_get_fmt(struct v4l2_subdev *sd, 602 struct v4l2_subdev_pad_config *cfg, 603 struct v4l2_subdev_format *format) 604{ 605 struct v4l2_mbus_framefmt *mf = &format->format; 606 struct i2c_client *client = v4l2_get_subdevdata(sd); 607 struct rj54n1 *rj54n1 = to_rj54n1(client); 608 609 if (format->pad) 610 return -EINVAL; 611 612 mf->code = rj54n1->fmt->code; 613 mf->colorspace = rj54n1->fmt->colorspace; 614 mf->field = V4L2_FIELD_NONE; 615 mf->width = rj54n1->width; 616 mf->height = rj54n1->height; 617 618 return 0; 619} 620 621/* 622 * The actual geometry configuration routine. It scales the input window into 623 * the output one, updates the window sizes and returns an error or the resize 624 * coefficient on success. Note: we only use the "Fixed Scaling" on this camera. 625 */ 626static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, 627 s32 *out_w, s32 *out_h) 628{ 629 struct i2c_client *client = v4l2_get_subdevdata(sd); 630 struct rj54n1 *rj54n1 = to_rj54n1(client); 631 unsigned int skip, resize, input_w = *in_w, input_h = *in_h, 632 output_w = *out_w, output_h = *out_h; 633 u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom; 634 unsigned int peak, peak_50, peak_60; 635 int ret; 636 637 /* 638 * We have a problem with crops, where the window is larger than 512x384 639 * and output window is larger than a half of the input one. In this 640 * case we have to either reduce the input window to equal or below 641 * 512x384 or the output window to equal or below 1/2 of the input. 642 */ 643 if (output_w > max(512U, input_w / 2)) { 644 if (2 * output_w > RJ54N1_MAX_WIDTH) { 645 input_w = RJ54N1_MAX_WIDTH; 646 output_w = RJ54N1_MAX_WIDTH / 2; 647 } else { 648 input_w = output_w * 2; 649 } 650 651 dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n", 652 input_w, output_w); 653 } 654 655 if (output_h > max(384U, input_h / 2)) { 656 if (2 * output_h > RJ54N1_MAX_HEIGHT) { 657 input_h = RJ54N1_MAX_HEIGHT; 658 output_h = RJ54N1_MAX_HEIGHT / 2; 659 } else { 660 input_h = output_h * 2; 661 } 662 663 dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n", 664 input_h, output_h); 665 } 666 667 /* Idea: use the read mode for snapshots, handle separate geometries */ 668 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L, 669 RJ54N1_Y_OUTPUT_SIZE_S_L, 670 RJ54N1_XY_OUTPUT_SIZE_S_H, output_w, output_h); 671 if (!ret) 672 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L, 673 RJ54N1_Y_OUTPUT_SIZE_P_L, 674 RJ54N1_XY_OUTPUT_SIZE_P_H, output_w, output_h); 675 676 if (ret < 0) 677 return ret; 678 679 if (output_w > input_w && output_h > input_h) { 680 input_w = output_w; 681 input_h = output_h; 682 683 resize = 1024; 684 } else { 685 unsigned int resize_x, resize_y; 686 resize_x = (input_w * 1024 + output_w / 2) / output_w; 687 resize_y = (input_h * 1024 + output_h / 2) / output_h; 688 689 /* We want max(resize_x, resize_y), check if it still fits */ 690 if (resize_x > resize_y && 691 (output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT) 692 resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) / 693 output_h; 694 else if (resize_y > resize_x && 695 (output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH) 696 resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) / 697 output_w; 698 else 699 resize = max(resize_x, resize_y); 700 701 /* Prohibited value ranges */ 702 switch (resize) { 703 case 2040 ... 2047: 704 resize = 2039; 705 break; 706 case 4080 ... 4095: 707 resize = 4079; 708 break; 709 case 8160 ... 8191: 710 resize = 8159; 711 break; 712 case 16320 ... 16384: 713 resize = 16319; 714 } 715 } 716 717 /* Set scaling */ 718 ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, resize & 0xff); 719 if (!ret) 720 ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, resize >> 8); 721 722 if (ret < 0) 723 return ret; 724 725 /* 726 * Configure a skipping bitmask. The sensor will select a skipping value 727 * among set bits automatically. This is very unclear in the datasheet 728 * too. I was told, in this register one enables all skipping values, 729 * that are required for a specific resize, and the camera selects 730 * automatically, which ones to use. But it is unclear how to identify, 731 * which cropping values are needed. Secondly, why don't we just set all 732 * bits and let the camera choose? Would it increase processing time and 733 * reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to 734 * improve the image quality or stability for larger frames (see comment 735 * above), but I didn't check the framerate. 736 */ 737 skip = min(resize / 1024, 15U); 738 739 inc_sel = 1 << skip; 740 741 if (inc_sel <= 2) 742 inc_sel = 0xc; 743 else if (resize & 1023 && skip < 15) 744 inc_sel |= 1 << (skip + 1); 745 746 ret = reg_write(client, RJ54N1_INC_USE_SEL_L, inc_sel & 0xfc); 747 if (!ret) 748 ret = reg_write(client, RJ54N1_INC_USE_SEL_H, inc_sel >> 8); 749 750 if (!rj54n1->auto_wb) { 751 /* Auto white balance window */ 752 wb_left = output_w / 16; 753 wb_right = (3 * output_w / 4 - 3) / 4; 754 wb_top = output_h / 16; 755 wb_bottom = (3 * output_h / 4 - 3) / 4; 756 wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) | 757 ((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1); 758 759 if (!ret) 760 ret = reg_write(client, RJ54N1_BIT8_WB, wb_bit8); 761 if (!ret) 762 ret = reg_write(client, RJ54N1_HCAPS_WB, wb_left); 763 if (!ret) 764 ret = reg_write(client, RJ54N1_VCAPS_WB, wb_top); 765 if (!ret) 766 ret = reg_write(client, RJ54N1_HCAPE_WB, wb_right); 767 if (!ret) 768 ret = reg_write(client, RJ54N1_VCAPE_WB, wb_bottom); 769 } 770 771 /* Antiflicker */ 772 peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz / 773 10000; 774 peak_50 = peak / 6; 775 peak_60 = peak / 5; 776 777 if (!ret) 778 ret = reg_write(client, RJ54N1_PEAK_H, 779 ((peak_50 >> 4) & 0xf0) | (peak_60 >> 8)); 780 if (!ret) 781 ret = reg_write(client, RJ54N1_PEAK_50, peak_50); 782 if (!ret) 783 ret = reg_write(client, RJ54N1_PEAK_60, peak_60); 784 if (!ret) 785 ret = reg_write(client, RJ54N1_PEAK_DIFF, peak / 150); 786 787 /* Start resizing */ 788 if (!ret) 789 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, 790 RESIZE_HOLD_SEL | RESIZE_GO | 1); 791 792 if (ret < 0) 793 return ret; 794 795 /* Constant taken from manufacturer's example */ 796 msleep(230); 797 798 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1); 799 if (ret < 0) 800 return ret; 801 802 *in_w = (output_w * resize + 512) / 1024; 803 *in_h = (output_h * resize + 512) / 1024; 804 *out_w = output_w; 805 *out_h = output_h; 806 807 dev_dbg(&client->dev, "Scaled for %dx%d : %u = %ux%u, skip %u\n", 808 *in_w, *in_h, resize, output_w, output_h, skip); 809 810 return resize; 811} 812 813static int rj54n1_set_clock(struct i2c_client *client) 814{ 815 struct rj54n1 *rj54n1 = to_rj54n1(client); 816 int ret; 817 818 /* Enable external clock */ 819 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY); 820 /* Leave stand-by. Note: use this when implementing suspend / resume */ 821 if (!ret) 822 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK); 823 824 if (!ret) 825 ret = reg_write(client, RJ54N1_PLL_L, PLL_L); 826 if (!ret) 827 ret = reg_write(client, RJ54N1_PLL_N, PLL_N); 828 829 /* TGCLK dividers */ 830 if (!ret) 831 ret = reg_write(client, RJ54N1_RATIO_TG, 832 rj54n1->clk_div.ratio_tg); 833 if (!ret) 834 ret = reg_write(client, RJ54N1_RATIO_T, 835 rj54n1->clk_div.ratio_t); 836 if (!ret) 837 ret = reg_write(client, RJ54N1_RATIO_R, 838 rj54n1->clk_div.ratio_r); 839 840 /* Enable TGCLK & RAMP */ 841 if (!ret) 842 ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, 3); 843 844 /* Disable clock output */ 845 if (!ret) 846 ret = reg_write(client, RJ54N1_OCLK_DSP, 0); 847 848 /* Set divisors */ 849 if (!ret) 850 ret = reg_write(client, RJ54N1_RATIO_OP, 851 rj54n1->clk_div.ratio_op); 852 if (!ret) 853 ret = reg_write(client, RJ54N1_RATIO_O, 854 rj54n1->clk_div.ratio_o); 855 856 /* Enable OCLK */ 857 if (!ret) 858 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1); 859 860 /* Use PLL for Timing Generator, write 2 to reserved bits */ 861 if (!ret) 862 ret = reg_write(client, RJ54N1_TG_BYPASS, 2); 863 864 /* Take sensor out of reset */ 865 if (!ret) 866 ret = reg_write(client, RJ54N1_RESET_STANDBY, 867 E_EXCLK | SEN_RSTX); 868 /* Enable PLL */ 869 if (!ret) 870 ret = reg_write(client, RJ54N1_PLL_EN, 1); 871 872 /* Wait for PLL to stabilise */ 873 msleep(10); 874 875 /* Enable clock to frequency divider */ 876 if (!ret) 877 ret = reg_write(client, RJ54N1_CLK_RST, 1); 878 879 if (!ret) 880 ret = reg_read(client, RJ54N1_CLK_RST); 881 if (ret != 1) { 882 dev_err(&client->dev, 883 "Resetting RJ54N1CB0C clock failed: %d!\n", ret); 884 return -EIO; 885 } 886 887 /* Start the PLL */ 888 ret = reg_set(client, RJ54N1_OCLK_DSP, 1, 1); 889 890 /* Enable OCLK */ 891 if (!ret) 892 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1); 893 894 return ret; 895} 896 897static int rj54n1_reg_init(struct i2c_client *client) 898{ 899 struct rj54n1 *rj54n1 = to_rj54n1(client); 900 int ret = rj54n1_set_clock(client); 901 902 if (!ret) 903 ret = reg_write_multiple(client, bank_7, ARRAY_SIZE(bank_7)); 904 if (!ret) 905 ret = reg_write_multiple(client, bank_10, ARRAY_SIZE(bank_10)); 906 907 /* Set binning divisors */ 908 if (!ret) 909 ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, 3 | (7 << 4)); 910 if (!ret) 911 ret = reg_write(client, RJ54N1_SCALE_4_LEV, 0xf); 912 913 /* Switch to fixed resize mode */ 914 if (!ret) 915 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, 916 RESIZE_HOLD_SEL | 1); 917 918 /* Set gain */ 919 if (!ret) 920 ret = reg_write(client, RJ54N1_Y_GAIN, 0x84); 921 922 /* 923 * Mirror the image back: default is upside down and left-to-right... 924 * Set manual preview / still shot switching 925 */ 926 if (!ret) 927 ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, 0x27); 928 929 if (!ret) 930 ret = reg_write_multiple(client, bank_4, ARRAY_SIZE(bank_4)); 931 932 /* Auto exposure area */ 933 if (!ret) 934 ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, 0x80); 935 /* Check current auto WB config */ 936 if (!ret) 937 ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I); 938 if (ret >= 0) { 939 rj54n1->auto_wb = ret & 0x80; 940 ret = reg_write_multiple(client, bank_5, ARRAY_SIZE(bank_5)); 941 } 942 if (!ret) 943 ret = reg_write_multiple(client, bank_8, ARRAY_SIZE(bank_8)); 944 945 if (!ret) 946 ret = reg_write(client, RJ54N1_RESET_STANDBY, 947 E_EXCLK | DSP_RSTX | SEN_RSTX); 948 949 /* Commit init */ 950 if (!ret) 951 ret = rj54n1_commit(client); 952 953 /* Take DSP, TG, sensor out of reset */ 954 if (!ret) 955 ret = reg_write(client, RJ54N1_RESET_STANDBY, 956 E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX); 957 958 /* Start register update? Same register as 0x?FE in many bank_* sets */ 959 if (!ret) 960 ret = reg_write(client, RJ54N1_FWFLG, 2); 961 962 /* Constant taken from manufacturer's example */ 963 msleep(700); 964 965 return ret; 966} 967 968static int rj54n1_set_fmt(struct v4l2_subdev *sd, 969 struct v4l2_subdev_pad_config *cfg, 970 struct v4l2_subdev_format *format) 971{ 972 struct v4l2_mbus_framefmt *mf = &format->format; 973 struct i2c_client *client = v4l2_get_subdevdata(sd); 974 struct rj54n1 *rj54n1 = to_rj54n1(client); 975 const struct rj54n1_datafmt *fmt; 976 int output_w, output_h, max_w, max_h, 977 input_w = rj54n1->rect.width, input_h = rj54n1->rect.height; 978 int align = mf->code == MEDIA_BUS_FMT_SBGGR10_1X10 || 979 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE || 980 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE || 981 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE || 982 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE; 983 int ret; 984 985 if (format->pad) 986 return -EINVAL; 987 988 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n", 989 __func__, mf->code, mf->width, mf->height); 990 991 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts, 992 ARRAY_SIZE(rj54n1_colour_fmts)); 993 if (!fmt) { 994 fmt = rj54n1->fmt; 995 mf->code = fmt->code; 996 } 997 998 mf->field = V4L2_FIELD_NONE; 999 mf->colorspace = fmt->colorspace; 1000 1001 v4l_bound_align_image(&mf->width, 112, RJ54N1_MAX_WIDTH, align, 1002 &mf->height, 84, RJ54N1_MAX_HEIGHT, align, 0); 1003 1004 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 1005 cfg->try_fmt = *mf; 1006 return 0; 1007 } 1008 1009 /* 1010 * Verify if the sensor has just been powered on. TODO: replace this 1011 * with proper PM, when a suitable API is available. 1012 */ 1013 ret = reg_read(client, RJ54N1_RESET_STANDBY); 1014 if (ret < 0) 1015 return ret; 1016 1017 if (!(ret & E_EXCLK)) { 1018 ret = rj54n1_reg_init(client); 1019 if (ret < 0) 1020 return ret; 1021 } 1022 1023 /* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */ 1024 switch (mf->code) { 1025 case MEDIA_BUS_FMT_YUYV8_2X8: 1026 ret = reg_write(client, RJ54N1_OUT_SEL, 0); 1027 if (!ret) 1028 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1029 break; 1030 case MEDIA_BUS_FMT_YVYU8_2X8: 1031 ret = reg_write(client, RJ54N1_OUT_SEL, 0); 1032 if (!ret) 1033 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1034 break; 1035 case MEDIA_BUS_FMT_RGB565_2X8_LE: 1036 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11); 1037 if (!ret) 1038 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1039 break; 1040 case MEDIA_BUS_FMT_RGB565_2X8_BE: 1041 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11); 1042 if (!ret) 1043 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1044 break; 1045 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE: 1046 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1047 if (!ret) 1048 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1049 if (!ret) 1050 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0); 1051 break; 1052 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE: 1053 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1054 if (!ret) 1055 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1056 if (!ret) 1057 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8); 1058 break; 1059 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE: 1060 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1061 if (!ret) 1062 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1063 if (!ret) 1064 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0); 1065 break; 1066 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE: 1067 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1068 if (!ret) 1069 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1070 if (!ret) 1071 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8); 1072 break; 1073 case MEDIA_BUS_FMT_SBGGR10_1X10: 1074 ret = reg_write(client, RJ54N1_OUT_SEL, 5); 1075 break; 1076 default: 1077 ret = -EINVAL; 1078 } 1079 1080 /* Special case: a raw mode with 10 bits of data per clock tick */ 1081 if (!ret) 1082 ret = reg_set(client, RJ54N1_OCLK_SEL_EN, 1083 (mf->code == MEDIA_BUS_FMT_SBGGR10_1X10) << 1, 2); 1084 1085 if (ret < 0) 1086 return ret; 1087 1088 /* Supported scales 1:1 >= scale > 1:16 */ 1089 max_w = mf->width * (16 * 1024 - 1) / 1024; 1090 if (input_w > max_w) 1091 input_w = max_w; 1092 max_h = mf->height * (16 * 1024 - 1) / 1024; 1093 if (input_h > max_h) 1094 input_h = max_h; 1095 1096 output_w = mf->width; 1097 output_h = mf->height; 1098 1099 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h); 1100 if (ret < 0) 1101 return ret; 1102 1103 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts, 1104 ARRAY_SIZE(rj54n1_colour_fmts)); 1105 1106 rj54n1->fmt = fmt; 1107 rj54n1->resize = ret; 1108 rj54n1->rect.width = input_w; 1109 rj54n1->rect.height = input_h; 1110 rj54n1->width = output_w; 1111 rj54n1->height = output_h; 1112 1113 mf->width = output_w; 1114 mf->height = output_h; 1115 mf->field = V4L2_FIELD_NONE; 1116 mf->colorspace = fmt->colorspace; 1117 1118 return 0; 1119} 1120 1121#ifdef CONFIG_VIDEO_ADV_DEBUG 1122static int rj54n1_g_register(struct v4l2_subdev *sd, 1123 struct v4l2_dbg_register *reg) 1124{ 1125 struct i2c_client *client = v4l2_get_subdevdata(sd); 1126 1127 if (reg->reg < 0x400 || reg->reg > 0x1fff) 1128 /* Registers > 0x0800 are only available from Sharp support */ 1129 return -EINVAL; 1130 1131 reg->size = 1; 1132 reg->val = reg_read(client, reg->reg); 1133 1134 if (reg->val > 0xff) 1135 return -EIO; 1136 1137 return 0; 1138} 1139 1140static int rj54n1_s_register(struct v4l2_subdev *sd, 1141 const struct v4l2_dbg_register *reg) 1142{ 1143 struct i2c_client *client = v4l2_get_subdevdata(sd); 1144 1145 if (reg->reg < 0x400 || reg->reg > 0x1fff) 1146 /* Registers >= 0x0800 are only available from Sharp support */ 1147 return -EINVAL; 1148 1149 if (reg_write(client, reg->reg, reg->val) < 0) 1150 return -EIO; 1151 1152 return 0; 1153} 1154#endif 1155 1156static int rj54n1_s_power(struct v4l2_subdev *sd, int on) 1157{ 1158 struct i2c_client *client = v4l2_get_subdevdata(sd); 1159 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); 1160 struct rj54n1 *rj54n1 = to_rj54n1(client); 1161 1162 return soc_camera_set_power(&client->dev, ssdd, rj54n1->clk, on); 1163} 1164 1165static int rj54n1_s_ctrl(struct v4l2_ctrl *ctrl) 1166{ 1167 struct rj54n1 *rj54n1 = container_of(ctrl->handler, struct rj54n1, hdl); 1168 struct v4l2_subdev *sd = &rj54n1->subdev; 1169 struct i2c_client *client = v4l2_get_subdevdata(sd); 1170 int data; 1171 1172 switch (ctrl->id) { 1173 case V4L2_CID_VFLIP: 1174 if (ctrl->val) 1175 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 1); 1176 else 1177 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 1, 1); 1178 if (data < 0) 1179 return -EIO; 1180 return 0; 1181 case V4L2_CID_HFLIP: 1182 if (ctrl->val) 1183 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 2); 1184 else 1185 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 2, 2); 1186 if (data < 0) 1187 return -EIO; 1188 return 0; 1189 case V4L2_CID_GAIN: 1190 if (reg_write(client, RJ54N1_Y_GAIN, ctrl->val * 2) < 0) 1191 return -EIO; 1192 return 0; 1193 case V4L2_CID_AUTO_WHITE_BALANCE: 1194 /* Auto WB area - whole image */ 1195 if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, ctrl->val << 7, 1196 0x80) < 0) 1197 return -EIO; 1198 rj54n1->auto_wb = ctrl->val; 1199 return 0; 1200 } 1201 1202 return -EINVAL; 1203} 1204 1205static const struct v4l2_ctrl_ops rj54n1_ctrl_ops = { 1206 .s_ctrl = rj54n1_s_ctrl, 1207}; 1208 1209static struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = { 1210#ifdef CONFIG_VIDEO_ADV_DEBUG 1211 .g_register = rj54n1_g_register, 1212 .s_register = rj54n1_s_register, 1213#endif 1214 .s_power = rj54n1_s_power, 1215}; 1216 1217static int rj54n1_g_mbus_config(struct v4l2_subdev *sd, 1218 struct v4l2_mbus_config *cfg) 1219{ 1220 struct i2c_client *client = v4l2_get_subdevdata(sd); 1221 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); 1222 1223 cfg->flags = 1224 V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING | 1225 V4L2_MBUS_MASTER | V4L2_MBUS_DATA_ACTIVE_HIGH | 1226 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH; 1227 cfg->type = V4L2_MBUS_PARALLEL; 1228 cfg->flags = soc_camera_apply_board_flags(ssdd, cfg); 1229 1230 return 0; 1231} 1232 1233static int rj54n1_s_mbus_config(struct v4l2_subdev *sd, 1234 const struct v4l2_mbus_config *cfg) 1235{ 1236 struct i2c_client *client = v4l2_get_subdevdata(sd); 1237 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); 1238 1239 /* Figures 2.5-1 to 2.5-3 - default falling pixclk edge */ 1240 if (soc_camera_apply_board_flags(ssdd, cfg) & 1241 V4L2_MBUS_PCLK_SAMPLE_RISING) 1242 return reg_write(client, RJ54N1_OUT_SIGPO, 1 << 4); 1243 else 1244 return reg_write(client, RJ54N1_OUT_SIGPO, 0); 1245} 1246 1247static struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = { 1248 .s_stream = rj54n1_s_stream, 1249 .g_crop = rj54n1_g_crop, 1250 .s_crop = rj54n1_s_crop, 1251 .cropcap = rj54n1_cropcap, 1252 .g_mbus_config = rj54n1_g_mbus_config, 1253 .s_mbus_config = rj54n1_s_mbus_config, 1254}; 1255 1256static const struct v4l2_subdev_pad_ops rj54n1_subdev_pad_ops = { 1257 .enum_mbus_code = rj54n1_enum_mbus_code, 1258 .get_fmt = rj54n1_get_fmt, 1259 .set_fmt = rj54n1_set_fmt, 1260}; 1261 1262static struct v4l2_subdev_ops rj54n1_subdev_ops = { 1263 .core = &rj54n1_subdev_core_ops, 1264 .video = &rj54n1_subdev_video_ops, 1265 .pad = &rj54n1_subdev_pad_ops, 1266}; 1267 1268/* 1269 * Interface active, can use i2c. If it fails, it can indeed mean, that 1270 * this wasn't our capture interface, so, we wait for the right one 1271 */ 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