1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Driver for RJ54N1CB0C CMOS Image Sensor from Sharp 4 * 5 * Copyright (C) 2018, Jacopo Mondi <jacopo@jmondi.org> 6 * 7 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de> 8 */ 9 10 #include <linux/clk.h> 11 #include <linux/delay.h> 12 #include <linux/gpio/consumer.h> 13 #include <linux/i2c.h> 14 #include <linux/module.h> 15 #include <linux/slab.h> 16 #include <linux/v4l2-mediabus.h> 17 #include <linux/videodev2.h> 18 19 #include <media/i2c/rj54n1cb0c.h> 20 #include <media/v4l2-device.h> 21 #include <media/v4l2-ctrls.h> 22 #include <media/v4l2-subdev.h> 23 24 #define RJ54N1_DEV_CODE 0x0400 25 #define RJ54N1_DEV_CODE2 0x0401 26 #define RJ54N1_OUT_SEL 0x0403 27 #define RJ54N1_XY_OUTPUT_SIZE_S_H 0x0404 28 #define RJ54N1_X_OUTPUT_SIZE_S_L 0x0405 29 #define RJ54N1_Y_OUTPUT_SIZE_S_L 0x0406 30 #define RJ54N1_XY_OUTPUT_SIZE_P_H 0x0407 31 #define RJ54N1_X_OUTPUT_SIZE_P_L 0x0408 32 #define RJ54N1_Y_OUTPUT_SIZE_P_L 0x0409 33 #define RJ54N1_LINE_LENGTH_PCK_S_H 0x040a 34 #define RJ54N1_LINE_LENGTH_PCK_S_L 0x040b 35 #define RJ54N1_LINE_LENGTH_PCK_P_H 0x040c 36 #define RJ54N1_LINE_LENGTH_PCK_P_L 0x040d 37 #define RJ54N1_RESIZE_N 0x040e 38 #define RJ54N1_RESIZE_N_STEP 0x040f 39 #define RJ54N1_RESIZE_STEP 0x0410 40 #define RJ54N1_RESIZE_HOLD_H 0x0411 41 #define RJ54N1_RESIZE_HOLD_L 0x0412 42 #define RJ54N1_H_OBEN_OFS 0x0413 43 #define RJ54N1_V_OBEN_OFS 0x0414 44 #define RJ54N1_RESIZE_CONTROL 0x0415 45 #define RJ54N1_STILL_CONTROL 0x0417 46 #define RJ54N1_INC_USE_SEL_H 0x0425 47 #define RJ54N1_INC_USE_SEL_L 0x0426 48 #define RJ54N1_MIRROR_STILL_MODE 0x0427 49 #define RJ54N1_INIT_START 0x0428 50 #define RJ54N1_SCALE_1_2_LEV 0x0429 51 #define RJ54N1_SCALE_4_LEV 0x042a 52 #define RJ54N1_Y_GAIN 0x04d8 53 #define RJ54N1_APT_GAIN_UP 0x04fa 54 #define RJ54N1_RA_SEL_UL 0x0530 55 #define RJ54N1_BYTE_SWAP 0x0531 56 #define RJ54N1_OUT_SIGPO 0x053b 57 #define RJ54N1_WB_SEL_WEIGHT_I 0x054e 58 #define RJ54N1_BIT8_WB 0x0569 59 #define RJ54N1_HCAPS_WB 0x056a 60 #define RJ54N1_VCAPS_WB 0x056b 61 #define RJ54N1_HCAPE_WB 0x056c 62 #define RJ54N1_VCAPE_WB 0x056d 63 #define RJ54N1_EXPOSURE_CONTROL 0x058c 64 #define RJ54N1_FRAME_LENGTH_S_H 0x0595 65 #define RJ54N1_FRAME_LENGTH_S_L 0x0596 66 #define RJ54N1_FRAME_LENGTH_P_H 0x0597 67 #define RJ54N1_FRAME_LENGTH_P_L 0x0598 68 #define RJ54N1_PEAK_H 0x05b7 69 #define RJ54N1_PEAK_50 0x05b8 70 #define RJ54N1_PEAK_60 0x05b9 71 #define RJ54N1_PEAK_DIFF 0x05ba 72 #define RJ54N1_IOC 0x05ef 73 #define RJ54N1_TG_BYPASS 0x0700 74 #define RJ54N1_PLL_L 0x0701 75 #define RJ54N1_PLL_N 0x0702 76 #define RJ54N1_PLL_EN 0x0704 77 #define RJ54N1_RATIO_TG 0x0706 78 #define RJ54N1_RATIO_T 0x0707 79 #define RJ54N1_RATIO_R 0x0708 80 #define RJ54N1_RAMP_TGCLK_EN 0x0709 81 #define RJ54N1_OCLK_DSP 0x0710 82 #define RJ54N1_RATIO_OP 0x0711 83 #define RJ54N1_RATIO_O 0x0712 84 #define RJ54N1_OCLK_SEL_EN 0x0713 85 #define RJ54N1_CLK_RST 0x0717 86 #define RJ54N1_RESET_STANDBY 0x0718 87 #define RJ54N1_FWFLG 0x07fe 88 89 #define E_EXCLK (1 << 7) 90 #define SOFT_STDBY (1 << 4) 91 #define SEN_RSTX (1 << 2) 92 #define TG_RSTX (1 << 1) 93 #define DSP_RSTX (1 << 0) 94 95 #define RESIZE_HOLD_SEL (1 << 2) 96 #define RESIZE_GO (1 << 1) 97 98 /* 99 * When cropping, the camera automatically centers the cropped region, there 100 * doesn't seem to be a way to specify an explicit location of the rectangle. 101 */ 102 #define RJ54N1_COLUMN_SKIP 0 103 #define RJ54N1_ROW_SKIP 0 104 #define RJ54N1_MAX_WIDTH 1600 105 #define RJ54N1_MAX_HEIGHT 1200 106 107 #define PLL_L 2 108 #define PLL_N 0x31 109 110 /* I2C addresses: 0x50, 0x51, 0x60, 0x61 */ 111 112 /* RJ54N1CB0C has only one fixed colorspace per pixelcode */ 113 struct rj54n1_datafmt { 114 u32 code; 115 enum v4l2_colorspace colorspace; 116 }; 117 118 /* Find a data format by a pixel code in an array */ 119 static const struct rj54n1_datafmt *rj54n1_find_datafmt( 120 u32 code, const struct rj54n1_datafmt *fmt, 121 int n) 122 { 123 int i; 124 for (i = 0; i < n; i++) 125 if (fmt[i].code == code) 126 return fmt + i; 127 128 return NULL; 129 } 130 131 static const struct rj54n1_datafmt rj54n1_colour_fmts[] = { 132 {MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG}, 133 {MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG}, 134 {MEDIA_BUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB}, 135 {MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB}, 136 {MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB}, 137 {MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE, V4L2_COLORSPACE_SRGB}, 138 {MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB}, 139 {MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE, V4L2_COLORSPACE_SRGB}, 140 {MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB}, 141 }; 142 143 struct rj54n1_clock_div { 144 u8 ratio_tg; /* can be 0 or an odd number */ 145 u8 ratio_t; 146 u8 ratio_r; 147 u8 ratio_op; 148 u8 ratio_o; 149 }; 150 151 struct rj54n1 { 152 struct v4l2_subdev subdev; 153 struct v4l2_ctrl_handler hdl; 154 struct clk *clk; 155 struct gpio_desc *pwup_gpio; 156 struct gpio_desc *enable_gpio; 157 struct rj54n1_clock_div clk_div; 158 const struct rj54n1_datafmt *fmt; 159 struct v4l2_rect rect; /* Sensor window */ 160 unsigned int tgclk_mhz; 161 bool auto_wb; 162 unsigned short width; /* Output window */ 163 unsigned short height; 164 unsigned short resize; /* Sensor * 1024 / resize = Output */ 165 unsigned short scale; 166 u8 bank; 167 }; 168 169 struct rj54n1_reg_val { 170 u16 reg; 171 u8 val; 172 }; 173 174 static const struct rj54n1_reg_val bank_4[] = { 175 {0x417, 0}, 176 {0x42c, 0}, 177 {0x42d, 0xf0}, 178 {0x42e, 0}, 179 {0x42f, 0x50}, 180 {0x430, 0xf5}, 181 {0x431, 0x16}, 182 {0x432, 0x20}, 183 {0x433, 0}, 184 {0x434, 0xc8}, 185 {0x43c, 8}, 186 {0x43e, 0x90}, 187 {0x445, 0x83}, 188 {0x4ba, 0x58}, 189 {0x4bb, 4}, 190 {0x4bc, 0x20}, 191 {0x4db, 4}, 192 {0x4fe, 2}, 193 }; 194 195 static const struct rj54n1_reg_val bank_5[] = { 196 {0x514, 0}, 197 {0x516, 0}, 198 {0x518, 0}, 199 {0x51a, 0}, 200 {0x51d, 0xff}, 201 {0x56f, 0x28}, 202 {0x575, 0x40}, 203 {0x5bc, 0x48}, 204 {0x5c1, 6}, 205 {0x5e5, 0x11}, 206 {0x5e6, 0x43}, 207 {0x5e7, 0x33}, 208 {0x5e8, 0x21}, 209 {0x5e9, 0x30}, 210 {0x5ea, 0x0}, 211 {0x5eb, 0xa5}, 212 {0x5ec, 0xff}, 213 {0x5fe, 2}, 214 }; 215 216 static const struct rj54n1_reg_val bank_7[] = { 217 {0x70a, 0}, 218 {0x714, 0xff}, 219 {0x715, 0xff}, 220 {0x716, 0x1f}, 221 {0x7FE, 2}, 222 }; 223 224 static const struct rj54n1_reg_val bank_8[] = { 225 {0x800, 0x00}, 226 {0x801, 0x01}, 227 {0x802, 0x61}, 228 {0x805, 0x00}, 229 {0x806, 0x00}, 230 {0x807, 0x00}, 231 {0x808, 0x00}, 232 {0x809, 0x01}, 233 {0x80A, 0x61}, 234 {0x80B, 0x00}, 235 {0x80C, 0x01}, 236 {0x80D, 0x00}, 237 {0x80E, 0x00}, 238 {0x80F, 0x00}, 239 {0x810, 0x00}, 240 {0x811, 0x01}, 241 {0x812, 0x61}, 242 {0x813, 0x00}, 243 {0x814, 0x11}, 244 {0x815, 0x00}, 245 {0x816, 0x41}, 246 {0x817, 0x00}, 247 {0x818, 0x51}, 248 {0x819, 0x01}, 249 {0x81A, 0x1F}, 250 {0x81B, 0x00}, 251 {0x81C, 0x01}, 252 {0x81D, 0x00}, 253 {0x81E, 0x11}, 254 {0x81F, 0x00}, 255 {0x820, 0x41}, 256 {0x821, 0x00}, 257 {0x822, 0x51}, 258 {0x823, 0x00}, 259 {0x824, 0x00}, 260 {0x825, 0x00}, 261 {0x826, 0x47}, 262 {0x827, 0x01}, 263 {0x828, 0x4F}, 264 {0x829, 0x00}, 265 {0x82A, 0x00}, 266 {0x82B, 0x00}, 267 {0x82C, 0x30}, 268 {0x82D, 0x00}, 269 {0x82E, 0x40}, 270 {0x82F, 0x00}, 271 {0x830, 0xB3}, 272 {0x831, 0x00}, 273 {0x832, 0xE3}, 274 {0x833, 0x00}, 275 {0x834, 0x00}, 276 {0x835, 0x00}, 277 {0x836, 0x00}, 278 {0x837, 0x00}, 279 {0x838, 0x00}, 280 {0x839, 0x01}, 281 {0x83A, 0x61}, 282 {0x83B, 0x00}, 283 {0x83C, 0x01}, 284 {0x83D, 0x00}, 285 {0x83E, 0x00}, 286 {0x83F, 0x00}, 287 {0x840, 0x00}, 288 {0x841, 0x01}, 289 {0x842, 0x61}, 290 {0x843, 0x00}, 291 {0x844, 0x1D}, 292 {0x845, 0x00}, 293 {0x846, 0x00}, 294 {0x847, 0x00}, 295 {0x848, 0x00}, 296 {0x849, 0x01}, 297 {0x84A, 0x1F}, 298 {0x84B, 0x00}, 299 {0x84C, 0x05}, 300 {0x84D, 0x00}, 301 {0x84E, 0x19}, 302 {0x84F, 0x01}, 303 {0x850, 0x21}, 304 {0x851, 0x01}, 305 {0x852, 0x5D}, 306 {0x853, 0x00}, 307 {0x854, 0x00}, 308 {0x855, 0x00}, 309 {0x856, 0x19}, 310 {0x857, 0x01}, 311 {0x858, 0x21}, 312 {0x859, 0x00}, 313 {0x85A, 0x00}, 314 {0x85B, 0x00}, 315 {0x85C, 0x00}, 316 {0x85D, 0x00}, 317 {0x85E, 0x00}, 318 {0x85F, 0x00}, 319 {0x860, 0xB3}, 320 {0x861, 0x00}, 321 {0x862, 0xE3}, 322 {0x863, 0x00}, 323 {0x864, 0x00}, 324 {0x865, 0x00}, 325 {0x866, 0x00}, 326 {0x867, 0x00}, 327 {0x868, 0x00}, 328 {0x869, 0xE2}, 329 {0x86A, 0x00}, 330 {0x86B, 0x01}, 331 {0x86C, 0x06}, 332 {0x86D, 0x00}, 333 {0x86E, 0x00}, 334 {0x86F, 0x00}, 335 {0x870, 0x60}, 336 {0x871, 0x8C}, 337 {0x872, 0x10}, 338 {0x873, 0x00}, 339 {0x874, 0xE0}, 340 {0x875, 0x00}, 341 {0x876, 0x27}, 342 {0x877, 0x01}, 343 {0x878, 0x00}, 344 {0x879, 0x00}, 345 {0x87A, 0x00}, 346 {0x87B, 0x03}, 347 {0x87C, 0x00}, 348 {0x87D, 0x00}, 349 {0x87E, 0x00}, 350 {0x87F, 0x00}, 351 {0x880, 0x00}, 352 {0x881, 0x00}, 353 {0x882, 0x00}, 354 {0x883, 0x00}, 355 {0x884, 0x00}, 356 {0x885, 0x00}, 357 {0x886, 0xF8}, 358 {0x887, 0x00}, 359 {0x888, 0x03}, 360 {0x889, 0x00}, 361 {0x88A, 0x64}, 362 {0x88B, 0x00}, 363 {0x88C, 0x03}, 364 {0x88D, 0x00}, 365 {0x88E, 0xB1}, 366 {0x88F, 0x00}, 367 {0x890, 0x03}, 368 {0x891, 0x01}, 369 {0x892, 0x1D}, 370 {0x893, 0x00}, 371 {0x894, 0x03}, 372 {0x895, 0x01}, 373 {0x896, 0x4B}, 374 {0x897, 0x00}, 375 {0x898, 0xE5}, 376 {0x899, 0x00}, 377 {0x89A, 0x01}, 378 {0x89B, 0x00}, 379 {0x89C, 0x01}, 380 {0x89D, 0x04}, 381 {0x89E, 0xC8}, 382 {0x89F, 0x00}, 383 {0x8A0, 0x01}, 384 {0x8A1, 0x01}, 385 {0x8A2, 0x61}, 386 {0x8A3, 0x00}, 387 {0x8A4, 0x01}, 388 {0x8A5, 0x00}, 389 {0x8A6, 0x00}, 390 {0x8A7, 0x00}, 391 {0x8A8, 0x00}, 392 {0x8A9, 0x00}, 393 {0x8AA, 0x7F}, 394 {0x8AB, 0x03}, 395 {0x8AC, 0x00}, 396 {0x8AD, 0x00}, 397 {0x8AE, 0x00}, 398 {0x8AF, 0x00}, 399 {0x8B0, 0x00}, 400 {0x8B1, 0x00}, 401 {0x8B6, 0x00}, 402 {0x8B7, 0x01}, 403 {0x8B8, 0x00}, 404 {0x8B9, 0x00}, 405 {0x8BA, 0x02}, 406 {0x8BB, 0x00}, 407 {0x8BC, 0xFF}, 408 {0x8BD, 0x00}, 409 {0x8FE, 2}, 410 }; 411 412 static const struct rj54n1_reg_val bank_10[] = { 413 {0x10bf, 0x69} 414 }; 415 416 /* Clock dividers - these are default register values, divider = register + 1 */ 417 static const struct rj54n1_clock_div clk_div = { 418 .ratio_tg = 3 /* default: 5 */, 419 .ratio_t = 4 /* default: 1 */, 420 .ratio_r = 4 /* default: 0 */, 421 .ratio_op = 1 /* default: 5 */, 422 .ratio_o = 9 /* default: 0 */, 423 }; 424 425 static struct rj54n1 *to_rj54n1(const struct i2c_client *client) 426 { 427 return container_of(i2c_get_clientdata(client), struct rj54n1, subdev); 428 } 429 430 static int reg_read(struct i2c_client *client, const u16 reg) 431 { 432 struct rj54n1 *rj54n1 = to_rj54n1(client); 433 int ret; 434 435 /* set bank */ 436 if (rj54n1->bank != reg >> 8) { 437 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8); 438 ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8); 439 if (ret < 0) 440 return ret; 441 rj54n1->bank = reg >> 8; 442 } 443 return i2c_smbus_read_byte_data(client, reg & 0xff); 444 } 445 446 static int reg_write(struct i2c_client *client, const u16 reg, 447 const u8 data) 448 { 449 struct rj54n1 *rj54n1 = to_rj54n1(client); 450 int ret; 451 452 /* set bank */ 453 if (rj54n1->bank != reg >> 8) { 454 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8); 455 ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8); 456 if (ret < 0) 457 return ret; 458 rj54n1->bank = reg >> 8; 459 } 460 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", reg & 0xff, data); 461 return i2c_smbus_write_byte_data(client, reg & 0xff, data); 462 } 463 464 static int reg_set(struct i2c_client *client, const u16 reg, 465 const u8 data, const u8 mask) 466 { 467 int ret; 468 469 ret = reg_read(client, reg); 470 if (ret < 0) 471 return ret; 472 return reg_write(client, reg, (ret & ~mask) | (data & mask)); 473 } 474 475 static int reg_write_multiple(struct i2c_client *client, 476 const struct rj54n1_reg_val *rv, const int n) 477 { 478 int i, ret; 479 480 for (i = 0; i < n; i++) { 481 ret = reg_write(client, rv->reg, rv->val); 482 if (ret < 0) 483 return ret; 484 rv++; 485 } 486 487 return 0; 488 } 489 490 static int rj54n1_enum_mbus_code(struct v4l2_subdev *sd, 491 struct v4l2_subdev_pad_config *cfg, 492 struct v4l2_subdev_mbus_code_enum *code) 493 { 494 if (code->pad || code->index >= ARRAY_SIZE(rj54n1_colour_fmts)) 495 return -EINVAL; 496 497 code->code = rj54n1_colour_fmts[code->index].code; 498 return 0; 499 } 500 501 static int rj54n1_s_stream(struct v4l2_subdev *sd, int enable) 502 { 503 struct i2c_client *client = v4l2_get_subdevdata(sd); 504 505 /* Switch between preview and still shot modes */ 506 return reg_set(client, RJ54N1_STILL_CONTROL, (!enable) << 7, 0x80); 507 } 508 509 static int rj54n1_set_rect(struct i2c_client *client, 510 u16 reg_x, u16 reg_y, u16 reg_xy, 511 u32 width, u32 height) 512 { 513 int ret; 514 515 ret = reg_write(client, reg_xy, 516 ((width >> 4) & 0x70) | 517 ((height >> 8) & 7)); 518 519 if (!ret) 520 ret = reg_write(client, reg_x, width & 0xff); 521 if (!ret) 522 ret = reg_write(client, reg_y, height & 0xff); 523 524 return ret; 525 } 526 527 /* 528 * Some commands, specifically certain initialisation sequences, require 529 * a commit operation. 530 */ 531 static int rj54n1_commit(struct i2c_client *client) 532 { 533 int ret = reg_write(client, RJ54N1_INIT_START, 1); 534 msleep(10); 535 if (!ret) 536 ret = reg_write(client, RJ54N1_INIT_START, 0); 537 return ret; 538 } 539 540 static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, 541 s32 *out_w, s32 *out_h); 542 543 static int rj54n1_set_selection(struct v4l2_subdev *sd, 544 struct v4l2_subdev_pad_config *cfg, 545 struct v4l2_subdev_selection *sel) 546 { 547 struct i2c_client *client = v4l2_get_subdevdata(sd); 548 struct rj54n1 *rj54n1 = to_rj54n1(client); 549 const struct v4l2_rect *rect = &sel->r; 550 int output_w, output_h, input_w = rect->width, input_h = rect->height; 551 int ret; 552 553 if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE || 554 sel->target != V4L2_SEL_TGT_CROP) 555 return -EINVAL; 556 557 /* arbitrary minimum width and height, edges unimportant */ 558 v4l_bound_align_image(&input_w, 8, RJ54N1_MAX_WIDTH, 0, 559 &input_h, 8, RJ54N1_MAX_HEIGHT, 0, 0); 560 561 output_w = (input_w * 1024 + rj54n1->resize / 2) / rj54n1->resize; 562 output_h = (input_h * 1024 + rj54n1->resize / 2) / rj54n1->resize; 563 564 dev_dbg(&client->dev, "Scaling for %dx%d : %u = %dx%d\n", 565 input_w, input_h, rj54n1->resize, output_w, output_h); 566 567 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h); 568 if (ret < 0) 569 return ret; 570 571 rj54n1->width = output_w; 572 rj54n1->height = output_h; 573 rj54n1->resize = ret; 574 rj54n1->rect.width = input_w; 575 rj54n1->rect.height = input_h; 576 577 return 0; 578 } 579 580 static int rj54n1_get_selection(struct v4l2_subdev *sd, 581 struct v4l2_subdev_pad_config *cfg, 582 struct v4l2_subdev_selection *sel) 583 { 584 struct i2c_client *client = v4l2_get_subdevdata(sd); 585 struct rj54n1 *rj54n1 = to_rj54n1(client); 586 587 if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) 588 return -EINVAL; 589 590 switch (sel->target) { 591 case V4L2_SEL_TGT_CROP_BOUNDS: 592 case V4L2_SEL_TGT_CROP_DEFAULT: 593 sel->r.left = RJ54N1_COLUMN_SKIP; 594 sel->r.top = RJ54N1_ROW_SKIP; 595 sel->r.width = RJ54N1_MAX_WIDTH; 596 sel->r.height = RJ54N1_MAX_HEIGHT; 597 return 0; 598 case V4L2_SEL_TGT_CROP: 599 sel->r = rj54n1->rect; 600 return 0; 601 default: 602 return -EINVAL; 603 } 604 } 605 606 static int rj54n1_get_fmt(struct v4l2_subdev *sd, 607 struct v4l2_subdev_pad_config *cfg, 608 struct v4l2_subdev_format *format) 609 { 610 struct v4l2_mbus_framefmt *mf = &format->format; 611 struct i2c_client *client = v4l2_get_subdevdata(sd); 612 struct rj54n1 *rj54n1 = to_rj54n1(client); 613 614 if (format->pad) 615 return -EINVAL; 616 617 mf->code = rj54n1->fmt->code; 618 mf->colorspace = rj54n1->fmt->colorspace; 619 mf->ycbcr_enc = V4L2_YCBCR_ENC_601; 620 mf->xfer_func = V4L2_XFER_FUNC_SRGB; 621 mf->quantization = V4L2_QUANTIZATION_DEFAULT; 622 mf->field = V4L2_FIELD_NONE; 623 mf->width = rj54n1->width; 624 mf->height = rj54n1->height; 625 626 return 0; 627 } 628 629 /* 630 * The actual geometry configuration routine. It scales the input window into 631 * the output one, updates the window sizes and returns an error or the resize 632 * coefficient on success. Note: we only use the "Fixed Scaling" on this camera. 633 */ 634 static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, 635 s32 *out_w, s32 *out_h) 636 { 637 struct i2c_client *client = v4l2_get_subdevdata(sd); 638 struct rj54n1 *rj54n1 = to_rj54n1(client); 639 unsigned int skip, resize, input_w = *in_w, input_h = *in_h, 640 output_w = *out_w, output_h = *out_h; 641 u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom; 642 unsigned int peak, peak_50, peak_60; 643 int ret; 644 645 /* 646 * We have a problem with crops, where the window is larger than 512x384 647 * and output window is larger than a half of the input one. In this 648 * case we have to either reduce the input window to equal or below 649 * 512x384 or the output window to equal or below 1/2 of the input. 650 */ 651 if (output_w > max(512U, input_w / 2)) { 652 if (2 * output_w > RJ54N1_MAX_WIDTH) { 653 input_w = RJ54N1_MAX_WIDTH; 654 output_w = RJ54N1_MAX_WIDTH / 2; 655 } else { 656 input_w = output_w * 2; 657 } 658 659 dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n", 660 input_w, output_w); 661 } 662 663 if (output_h > max(384U, input_h / 2)) { 664 if (2 * output_h > RJ54N1_MAX_HEIGHT) { 665 input_h = RJ54N1_MAX_HEIGHT; 666 output_h = RJ54N1_MAX_HEIGHT / 2; 667 } else { 668 input_h = output_h * 2; 669 } 670 671 dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n", 672 input_h, output_h); 673 } 674 675 /* Idea: use the read mode for snapshots, handle separate geometries */ 676 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L, 677 RJ54N1_Y_OUTPUT_SIZE_S_L, 678 RJ54N1_XY_OUTPUT_SIZE_S_H, output_w, output_h); 679 if (!ret) 680 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L, 681 RJ54N1_Y_OUTPUT_SIZE_P_L, 682 RJ54N1_XY_OUTPUT_SIZE_P_H, output_w, output_h); 683 684 if (ret < 0) 685 return ret; 686 687 if (output_w > input_w && output_h > input_h) { 688 input_w = output_w; 689 input_h = output_h; 690 691 resize = 1024; 692 } else { 693 unsigned int resize_x, resize_y; 694 resize_x = (input_w * 1024 + output_w / 2) / output_w; 695 resize_y = (input_h * 1024 + output_h / 2) / output_h; 696 697 /* We want max(resize_x, resize_y), check if it still fits */ 698 if (resize_x > resize_y && 699 (output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT) 700 resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) / 701 output_h; 702 else if (resize_y > resize_x && 703 (output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH) 704 resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) / 705 output_w; 706 else 707 resize = max(resize_x, resize_y); 708 709 /* Prohibited value ranges */ 710 switch (resize) { 711 case 2040 ... 2047: 712 resize = 2039; 713 break; 714 case 4080 ... 4095: 715 resize = 4079; 716 break; 717 case 8160 ... 8191: 718 resize = 8159; 719 break; 720 case 16320 ... 16384: 721 resize = 16319; 722 } 723 } 724 725 /* Set scaling */ 726 ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, resize & 0xff); 727 if (!ret) 728 ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, resize >> 8); 729 730 if (ret < 0) 731 return ret; 732 733 /* 734 * Configure a skipping bitmask. The sensor will select a skipping value 735 * among set bits automatically. This is very unclear in the datasheet 736 * too. I was told, in this register one enables all skipping values, 737 * that are required for a specific resize, and the camera selects 738 * automatically, which ones to use. But it is unclear how to identify, 739 * which cropping values are needed. Secondly, why don't we just set all 740 * bits and let the camera choose? Would it increase processing time and 741 * reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to 742 * improve the image quality or stability for larger frames (see comment 743 * above), but I didn't check the framerate. 744 */ 745 skip = min(resize / 1024, 15U); 746 747 inc_sel = 1 << skip; 748 749 if (inc_sel <= 2) 750 inc_sel = 0xc; 751 else if (resize & 1023 && skip < 15) 752 inc_sel |= 1 << (skip + 1); 753 754 ret = reg_write(client, RJ54N1_INC_USE_SEL_L, inc_sel & 0xfc); 755 if (!ret) 756 ret = reg_write(client, RJ54N1_INC_USE_SEL_H, inc_sel >> 8); 757 758 if (!rj54n1->auto_wb) { 759 /* Auto white balance window */ 760 wb_left = output_w / 16; 761 wb_right = (3 * output_w / 4 - 3) / 4; 762 wb_top = output_h / 16; 763 wb_bottom = (3 * output_h / 4 - 3) / 4; 764 wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) | 765 ((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1); 766 767 if (!ret) 768 ret = reg_write(client, RJ54N1_BIT8_WB, wb_bit8); 769 if (!ret) 770 ret = reg_write(client, RJ54N1_HCAPS_WB, wb_left); 771 if (!ret) 772 ret = reg_write(client, RJ54N1_VCAPS_WB, wb_top); 773 if (!ret) 774 ret = reg_write(client, RJ54N1_HCAPE_WB, wb_right); 775 if (!ret) 776 ret = reg_write(client, RJ54N1_VCAPE_WB, wb_bottom); 777 } 778 779 /* Antiflicker */ 780 peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz / 781 10000; 782 peak_50 = peak / 6; 783 peak_60 = peak / 5; 784 785 if (!ret) 786 ret = reg_write(client, RJ54N1_PEAK_H, 787 ((peak_50 >> 4) & 0xf0) | (peak_60 >> 8)); 788 if (!ret) 789 ret = reg_write(client, RJ54N1_PEAK_50, peak_50); 790 if (!ret) 791 ret = reg_write(client, RJ54N1_PEAK_60, peak_60); 792 if (!ret) 793 ret = reg_write(client, RJ54N1_PEAK_DIFF, peak / 150); 794 795 /* Start resizing */ 796 if (!ret) 797 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, 798 RESIZE_HOLD_SEL | RESIZE_GO | 1); 799 800 if (ret < 0) 801 return ret; 802 803 /* Constant taken from manufacturer's example */ 804 msleep(230); 805 806 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1); 807 if (ret < 0) 808 return ret; 809 810 *in_w = (output_w * resize + 512) / 1024; 811 *in_h = (output_h * resize + 512) / 1024; 812 *out_w = output_w; 813 *out_h = output_h; 814 815 dev_dbg(&client->dev, "Scaled for %dx%d : %u = %ux%u, skip %u\n", 816 *in_w, *in_h, resize, output_w, output_h, skip); 817 818 return resize; 819 } 820 821 static int rj54n1_set_clock(struct i2c_client *client) 822 { 823 struct rj54n1 *rj54n1 = to_rj54n1(client); 824 int ret; 825 826 /* Enable external clock */ 827 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY); 828 /* Leave stand-by. Note: use this when implementing suspend / resume */ 829 if (!ret) 830 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK); 831 832 if (!ret) 833 ret = reg_write(client, RJ54N1_PLL_L, PLL_L); 834 if (!ret) 835 ret = reg_write(client, RJ54N1_PLL_N, PLL_N); 836 837 /* TGCLK dividers */ 838 if (!ret) 839 ret = reg_write(client, RJ54N1_RATIO_TG, 840 rj54n1->clk_div.ratio_tg); 841 if (!ret) 842 ret = reg_write(client, RJ54N1_RATIO_T, 843 rj54n1->clk_div.ratio_t); 844 if (!ret) 845 ret = reg_write(client, RJ54N1_RATIO_R, 846 rj54n1->clk_div.ratio_r); 847 848 /* Enable TGCLK & RAMP */ 849 if (!ret) 850 ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, 3); 851 852 /* Disable clock output */ 853 if (!ret) 854 ret = reg_write(client, RJ54N1_OCLK_DSP, 0); 855 856 /* Set divisors */ 857 if (!ret) 858 ret = reg_write(client, RJ54N1_RATIO_OP, 859 rj54n1->clk_div.ratio_op); 860 if (!ret) 861 ret = reg_write(client, RJ54N1_RATIO_O, 862 rj54n1->clk_div.ratio_o); 863 864 /* Enable OCLK */ 865 if (!ret) 866 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1); 867 868 /* Use PLL for Timing Generator, write 2 to reserved bits */ 869 if (!ret) 870 ret = reg_write(client, RJ54N1_TG_BYPASS, 2); 871 872 /* Take sensor out of reset */ 873 if (!ret) 874 ret = reg_write(client, RJ54N1_RESET_STANDBY, 875 E_EXCLK | SEN_RSTX); 876 /* Enable PLL */ 877 if (!ret) 878 ret = reg_write(client, RJ54N1_PLL_EN, 1); 879 880 /* Wait for PLL to stabilise */ 881 msleep(10); 882 883 /* Enable clock to frequency divider */ 884 if (!ret) 885 ret = reg_write(client, RJ54N1_CLK_RST, 1); 886 887 if (!ret) 888 ret = reg_read(client, RJ54N1_CLK_RST); 889 if (ret != 1) { 890 dev_err(&client->dev, 891 "Resetting RJ54N1CB0C clock failed: %d!\n", ret); 892 return -EIO; 893 } 894 895 /* Start the PLL */ 896 ret = reg_set(client, RJ54N1_OCLK_DSP, 1, 1); 897 898 /* Enable OCLK */ 899 if (!ret) 900 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1); 901 902 return ret; 903 } 904 905 static int rj54n1_reg_init(struct i2c_client *client) 906 { 907 struct rj54n1 *rj54n1 = to_rj54n1(client); 908 int ret = rj54n1_set_clock(client); 909 910 if (!ret) 911 ret = reg_write_multiple(client, bank_7, ARRAY_SIZE(bank_7)); 912 if (!ret) 913 ret = reg_write_multiple(client, bank_10, ARRAY_SIZE(bank_10)); 914 915 /* Set binning divisors */ 916 if (!ret) 917 ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, 3 | (7 << 4)); 918 if (!ret) 919 ret = reg_write(client, RJ54N1_SCALE_4_LEV, 0xf); 920 921 /* Switch to fixed resize mode */ 922 if (!ret) 923 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, 924 RESIZE_HOLD_SEL | 1); 925 926 /* Set gain */ 927 if (!ret) 928 ret = reg_write(client, RJ54N1_Y_GAIN, 0x84); 929 930 /* 931 * Mirror the image back: default is upside down and left-to-right... 932 * Set manual preview / still shot switching 933 */ 934 if (!ret) 935 ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, 0x27); 936 937 if (!ret) 938 ret = reg_write_multiple(client, bank_4, ARRAY_SIZE(bank_4)); 939 940 /* Auto exposure area */ 941 if (!ret) 942 ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, 0x80); 943 /* Check current auto WB config */ 944 if (!ret) 945 ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I); 946 if (ret >= 0) { 947 rj54n1->auto_wb = ret & 0x80; 948 ret = reg_write_multiple(client, bank_5, ARRAY_SIZE(bank_5)); 949 } 950 if (!ret) 951 ret = reg_write_multiple(client, bank_8, ARRAY_SIZE(bank_8)); 952 953 if (!ret) 954 ret = reg_write(client, RJ54N1_RESET_STANDBY, 955 E_EXCLK | DSP_RSTX | SEN_RSTX); 956 957 /* Commit init */ 958 if (!ret) 959 ret = rj54n1_commit(client); 960 961 /* Take DSP, TG, sensor out of reset */ 962 if (!ret) 963 ret = reg_write(client, RJ54N1_RESET_STANDBY, 964 E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX); 965 966 /* Start register update? Same register as 0x?FE in many bank_* sets */ 967 if (!ret) 968 ret = reg_write(client, RJ54N1_FWFLG, 2); 969 970 /* Constant taken from manufacturer's example */ 971 msleep(700); 972 973 return ret; 974 } 975 976 static int rj54n1_set_fmt(struct v4l2_subdev *sd, 977 struct v4l2_subdev_pad_config *cfg, 978 struct v4l2_subdev_format *format) 979 { 980 struct v4l2_mbus_framefmt *mf = &format->format; 981 struct i2c_client *client = v4l2_get_subdevdata(sd); 982 struct rj54n1 *rj54n1 = to_rj54n1(client); 983 const struct rj54n1_datafmt *fmt; 984 int output_w, output_h, max_w, max_h, 985 input_w = rj54n1->rect.width, input_h = rj54n1->rect.height; 986 int align = mf->code == MEDIA_BUS_FMT_SBGGR10_1X10 || 987 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE || 988 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE || 989 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE || 990 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE; 991 int ret; 992 993 if (format->pad) 994 return -EINVAL; 995 996 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n", 997 __func__, mf->code, mf->width, mf->height); 998 999 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts, 1000 ARRAY_SIZE(rj54n1_colour_fmts)); 1001 if (!fmt) { 1002 fmt = rj54n1->fmt; 1003 mf->code = fmt->code; 1004 } 1005 1006 mf->field = V4L2_FIELD_NONE; 1007 mf->colorspace = fmt->colorspace; 1008 1009 v4l_bound_align_image(&mf->width, 112, RJ54N1_MAX_WIDTH, align, 1010 &mf->height, 84, RJ54N1_MAX_HEIGHT, align, 0); 1011 1012 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 1013 cfg->try_fmt = *mf; 1014 return 0; 1015 } 1016 1017 /* 1018 * Verify if the sensor has just been powered on. TODO: replace this 1019 * with proper PM, when a suitable API is available. 1020 */ 1021 ret = reg_read(client, RJ54N1_RESET_STANDBY); 1022 if (ret < 0) 1023 return ret; 1024 1025 if (!(ret & E_EXCLK)) { 1026 ret = rj54n1_reg_init(client); 1027 if (ret < 0) 1028 return ret; 1029 } 1030 1031 /* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */ 1032 switch (mf->code) { 1033 case MEDIA_BUS_FMT_YUYV8_2X8: 1034 ret = reg_write(client, RJ54N1_OUT_SEL, 0); 1035 if (!ret) 1036 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1037 break; 1038 case MEDIA_BUS_FMT_YVYU8_2X8: 1039 ret = reg_write(client, RJ54N1_OUT_SEL, 0); 1040 if (!ret) 1041 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1042 break; 1043 case MEDIA_BUS_FMT_RGB565_2X8_LE: 1044 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11); 1045 if (!ret) 1046 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1047 break; 1048 case MEDIA_BUS_FMT_RGB565_2X8_BE: 1049 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11); 1050 if (!ret) 1051 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1052 break; 1053 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE: 1054 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1055 if (!ret) 1056 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1057 if (!ret) 1058 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0); 1059 break; 1060 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE: 1061 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1062 if (!ret) 1063 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1064 if (!ret) 1065 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8); 1066 break; 1067 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE: 1068 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1069 if (!ret) 1070 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1071 if (!ret) 1072 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0); 1073 break; 1074 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE: 1075 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1076 if (!ret) 1077 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1078 if (!ret) 1079 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8); 1080 break; 1081 case MEDIA_BUS_FMT_SBGGR10_1X10: 1082 ret = reg_write(client, RJ54N1_OUT_SEL, 5); 1083 break; 1084 default: 1085 ret = -EINVAL; 1086 } 1087 1088 /* Special case: a raw mode with 10 bits of data per clock tick */ 1089 if (!ret) 1090 ret = reg_set(client, RJ54N1_OCLK_SEL_EN, 1091 (mf->code == MEDIA_BUS_FMT_SBGGR10_1X10) << 1, 2); 1092 1093 if (ret < 0) 1094 return ret; 1095 1096 /* Supported scales 1:1 >= scale > 1:16 */ 1097 max_w = mf->width * (16 * 1024 - 1) / 1024; 1098 if (input_w > max_w) 1099 input_w = max_w; 1100 max_h = mf->height * (16 * 1024 - 1) / 1024; 1101 if (input_h > max_h) 1102 input_h = max_h; 1103 1104 output_w = mf->width; 1105 output_h = mf->height; 1106 1107 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h); 1108 if (ret < 0) 1109 return ret; 1110 1111 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts, 1112 ARRAY_SIZE(rj54n1_colour_fmts)); 1113 1114 rj54n1->fmt = fmt; 1115 rj54n1->resize = ret; 1116 rj54n1->rect.width = input_w; 1117 rj54n1->rect.height = input_h; 1118 rj54n1->width = output_w; 1119 rj54n1->height = output_h; 1120 1121 mf->width = output_w; 1122 mf->height = output_h; 1123 mf->field = V4L2_FIELD_NONE; 1124 mf->colorspace = fmt->colorspace; 1125 1126 return 0; 1127 } 1128 1129 #ifdef CONFIG_VIDEO_ADV_DEBUG 1130 static int rj54n1_g_register(struct v4l2_subdev *sd, 1131 struct v4l2_dbg_register *reg) 1132 { 1133 struct i2c_client *client = v4l2_get_subdevdata(sd); 1134 1135 if (reg->reg < 0x400 || reg->reg > 0x1fff) 1136 /* Registers > 0x0800 are only available from Sharp support */ 1137 return -EINVAL; 1138 1139 reg->size = 1; 1140 reg->val = reg_read(client, reg->reg); 1141 1142 if (reg->val > 0xff) 1143 return -EIO; 1144 1145 return 0; 1146 } 1147 1148 static int rj54n1_s_register(struct v4l2_subdev *sd, 1149 const struct v4l2_dbg_register *reg) 1150 { 1151 struct i2c_client *client = v4l2_get_subdevdata(sd); 1152 1153 if (reg->reg < 0x400 || reg->reg > 0x1fff) 1154 /* Registers >= 0x0800 are only available from Sharp support */ 1155 return -EINVAL; 1156 1157 if (reg_write(client, reg->reg, reg->val) < 0) 1158 return -EIO; 1159 1160 return 0; 1161 } 1162 #endif 1163 1164 static int rj54n1_s_power(struct v4l2_subdev *sd, int on) 1165 { 1166 struct i2c_client *client = v4l2_get_subdevdata(sd); 1167 struct rj54n1 *rj54n1 = to_rj54n1(client); 1168 1169 if (on) { 1170 if (rj54n1->pwup_gpio) 1171 gpiod_set_value(rj54n1->pwup_gpio, 1); 1172 if (rj54n1->enable_gpio) 1173 gpiod_set_value(rj54n1->enable_gpio, 1); 1174 1175 msleep(1); 1176 1177 return clk_prepare_enable(rj54n1->clk); 1178 } 1179 1180 clk_disable_unprepare(rj54n1->clk); 1181 1182 if (rj54n1->enable_gpio) 1183 gpiod_set_value(rj54n1->enable_gpio, 0); 1184 if (rj54n1->pwup_gpio) 1185 gpiod_set_value(rj54n1->pwup_gpio, 0); 1186 1187 return 0; 1188 } 1189 1190 static int rj54n1_s_ctrl(struct v4l2_ctrl *ctrl) 1191 { 1192 struct rj54n1 *rj54n1 = container_of(ctrl->handler, struct rj54n1, hdl); 1193 struct v4l2_subdev *sd = &rj54n1->subdev; 1194 struct i2c_client *client = v4l2_get_subdevdata(sd); 1195 int data; 1196 1197 switch (ctrl->id) { 1198 case V4L2_CID_VFLIP: 1199 if (ctrl->val) 1200 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 1); 1201 else 1202 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 1, 1); 1203 if (data < 0) 1204 return -EIO; 1205 return 0; 1206 case V4L2_CID_HFLIP: 1207 if (ctrl->val) 1208 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 2); 1209 else 1210 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 2, 2); 1211 if (data < 0) 1212 return -EIO; 1213 return 0; 1214 case V4L2_CID_GAIN: 1215 if (reg_write(client, RJ54N1_Y_GAIN, ctrl->val * 2) < 0) 1216 return -EIO; 1217 return 0; 1218 case V4L2_CID_AUTO_WHITE_BALANCE: 1219 /* Auto WB area - whole image */ 1220 if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, ctrl->val << 7, 1221 0x80) < 0) 1222 return -EIO; 1223 rj54n1->auto_wb = ctrl->val; 1224 return 0; 1225 } 1226 1227 return -EINVAL; 1228 } 1229 1230 static const struct v4l2_ctrl_ops rj54n1_ctrl_ops = { 1231 .s_ctrl = rj54n1_s_ctrl, 1232 }; 1233 1234 static const struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = { 1235 #ifdef CONFIG_VIDEO_ADV_DEBUG 1236 .g_register = rj54n1_g_register, 1237 .s_register = rj54n1_s_register, 1238 #endif 1239 .s_power = rj54n1_s_power, 1240 }; 1241 1242 static const struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = { 1243 .s_stream = rj54n1_s_stream, 1244 }; 1245 1246 static const struct v4l2_subdev_pad_ops rj54n1_subdev_pad_ops = { 1247 .enum_mbus_code = rj54n1_enum_mbus_code, 1248 .get_selection = rj54n1_get_selection, 1249 .set_selection = rj54n1_set_selection, 1250 .get_fmt = rj54n1_get_fmt, 1251 .set_fmt = rj54n1_set_fmt, 1252 }; 1253 1254 static const struct v4l2_subdev_ops rj54n1_subdev_ops = { 1255 .core = &rj54n1_subdev_core_ops, 1256 .video = &rj54n1_subdev_video_ops, 1257 .pad = &rj54n1_subdev_pad_ops, 1258 }; 1259 1260 /* 1261 * Interface active, can use i2c. If it fails, it can indeed mean, that 1262 * this wasn't our capture interface, so, we wait for the right one 1263 */ 1264 static int rj54n1_video_probe(struct i2c_client *client, 1265 struct rj54n1_pdata *priv) 1266 { 1267 struct rj54n1 *rj54n1 = to_rj54n1(client); 1268 int data1, data2; 1269 int ret; 1270 1271 ret = rj54n1_s_power(&rj54n1->subdev, 1); 1272 if (ret < 0) 1273 return ret; 1274 1275 /* Read out the chip version register */ 1276 data1 = reg_read(client, RJ54N1_DEV_CODE); 1277 data2 = reg_read(client, RJ54N1_DEV_CODE2); 1278 1279 if (data1 != 0x51 || data2 != 0x10) { 1280 ret = -ENODEV; 1281 dev_info(&client->dev, "No RJ54N1CB0C found, read 0x%x:0x%x\n", 1282 data1, data2); 1283 goto done; 1284 } 1285 1286 /* Configure IOCTL polarity from the platform data: 0 or 1 << 7. */ 1287 ret = reg_write(client, RJ54N1_IOC, priv->ioctl_high << 7); 1288 if (ret < 0) 1289 goto done; 1290 1291 dev_info(&client->dev, "Detected a RJ54N1CB0C chip ID 0x%x:0x%x\n", 1292 data1, data2); 1293 1294 ret = v4l2_ctrl_handler_setup(&rj54n1->hdl); 1295 1296 done: 1297 rj54n1_s_power(&rj54n1->subdev, 0); 1298 return ret; 1299 } 1300 1301 static int rj54n1_probe(struct i2c_client *client, 1302 const struct i2c_device_id *did) 1303 { 1304 struct rj54n1 *rj54n1; 1305 struct i2c_adapter *adapter = client->adapter; 1306 struct rj54n1_pdata *rj54n1_priv; 1307 int ret; 1308 1309 if (!client->dev.platform_data) { 1310 dev_err(&client->dev, "RJ54N1CB0C: missing platform data!\n"); 1311 return -EINVAL; 1312 } 1313 1314 rj54n1_priv = client->dev.platform_data; 1315 1316 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { 1317 dev_warn(&adapter->dev, 1318 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n"); 1319 return -EIO; 1320 } 1321 1322 rj54n1 = devm_kzalloc(&client->dev, sizeof(struct rj54n1), GFP_KERNEL); 1323 if (!rj54n1) 1324 return -ENOMEM; 1325 1326 v4l2_i2c_subdev_init(&rj54n1->subdev, client, &rj54n1_subdev_ops); 1327 v4l2_ctrl_handler_init(&rj54n1->hdl, 4); 1328 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops, 1329 V4L2_CID_VFLIP, 0, 1, 1, 0); 1330 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops, 1331 V4L2_CID_HFLIP, 0, 1, 1, 0); 1332 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops, 1333 V4L2_CID_GAIN, 0, 127, 1, 66); 1334 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops, 1335 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1); 1336 rj54n1->subdev.ctrl_handler = &rj54n1->hdl; 1337 if (rj54n1->hdl.error) 1338 return rj54n1->hdl.error; 1339 1340 rj54n1->clk_div = clk_div; 1341 rj54n1->rect.left = RJ54N1_COLUMN_SKIP; 1342 rj54n1->rect.top = RJ54N1_ROW_SKIP; 1343 rj54n1->rect.width = RJ54N1_MAX_WIDTH; 1344 rj54n1->rect.height = RJ54N1_MAX_HEIGHT; 1345 rj54n1->width = RJ54N1_MAX_WIDTH; 1346 rj54n1->height = RJ54N1_MAX_HEIGHT; 1347 rj54n1->fmt = &rj54n1_colour_fmts[0]; 1348 rj54n1->resize = 1024; 1349 rj54n1->tgclk_mhz = (rj54n1_priv->mclk_freq / PLL_L * PLL_N) / 1350 (clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1); 1351 1352 rj54n1->clk = clk_get(&client->dev, NULL); 1353 if (IS_ERR(rj54n1->clk)) { 1354 ret = PTR_ERR(rj54n1->clk); 1355 goto err_free_ctrl; 1356 } 1357 1358 rj54n1->pwup_gpio = gpiod_get_optional(&client->dev, "powerup", 1359 GPIOD_OUT_LOW); 1360 if (IS_ERR(rj54n1->pwup_gpio)) { 1361 dev_info(&client->dev, "Unable to get GPIO \"powerup\": %ld\n", 1362 PTR_ERR(rj54n1->pwup_gpio)); 1363 ret = PTR_ERR(rj54n1->pwup_gpio); 1364 goto err_clk_put; 1365 } 1366 1367 rj54n1->enable_gpio = gpiod_get_optional(&client->dev, "enable", 1368 GPIOD_OUT_LOW); 1369 if (IS_ERR(rj54n1->enable_gpio)) { 1370 dev_info(&client->dev, "Unable to get GPIO \"enable\": %ld\n", 1371 PTR_ERR(rj54n1->enable_gpio)); 1372 ret = PTR_ERR(rj54n1->enable_gpio); 1373 goto err_gpio_put; 1374 } 1375 1376 ret = rj54n1_video_probe(client, rj54n1_priv); 1377 if (ret < 0) 1378 goto err_gpio_put; 1379 1380 ret = v4l2_async_register_subdev(&rj54n1->subdev); 1381 if (ret) 1382 goto err_gpio_put; 1383 1384 return 0; 1385 1386 err_gpio_put: 1387 if (rj54n1->enable_gpio) 1388 gpiod_put(rj54n1->enable_gpio); 1389 1390 if (rj54n1->pwup_gpio) 1391 gpiod_put(rj54n1->pwup_gpio); 1392 1393 err_clk_put: 1394 clk_put(rj54n1->clk); 1395 1396 err_free_ctrl: 1397 v4l2_ctrl_handler_free(&rj54n1->hdl); 1398 1399 return ret; 1400 } 1401 1402 static int rj54n1_remove(struct i2c_client *client) 1403 { 1404 struct rj54n1 *rj54n1 = to_rj54n1(client); 1405 1406 if (rj54n1->enable_gpio) 1407 gpiod_put(rj54n1->enable_gpio); 1408 if (rj54n1->pwup_gpio) 1409 gpiod_put(rj54n1->pwup_gpio); 1410 1411 clk_put(rj54n1->clk); 1412 v4l2_ctrl_handler_free(&rj54n1->hdl); 1413 v4l2_async_unregister_subdev(&rj54n1->subdev); 1414 1415 return 0; 1416 } 1417 1418 static const struct i2c_device_id rj54n1_id[] = { 1419 { "rj54n1cb0c", 0 }, 1420 { } 1421 }; 1422 MODULE_DEVICE_TABLE(i2c, rj54n1_id); 1423 1424 static struct i2c_driver rj54n1_i2c_driver = { 1425 .driver = { 1426 .name = "rj54n1cb0c", 1427 }, 1428 .probe = rj54n1_probe, 1429 .remove = rj54n1_remove, 1430 .id_table = rj54n1_id, 1431 }; 1432 1433 module_i2c_driver(rj54n1_i2c_driver); 1434 1435 MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver"); 1436 MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); 1437 MODULE_LICENSE("GPL v2"); 1438