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_state *sd_state, 492 struct v4l2_subdev_mbus_code_enum *code) 493 { 494 if (code->pad || code->index >= ARRAY_SIZE(rj54n1_colour_fmts)) 495 return -EINVAL; 496 497 code->code = rj54n1_colour_fmts[code->index].code; 498 return 0; 499 } 500 501 static int rj54n1_s_stream(struct v4l2_subdev *sd, int enable) 502 { 503 struct i2c_client *client = v4l2_get_subdevdata(sd); 504 505 /* Switch between preview and still shot modes */ 506 return reg_set(client, RJ54N1_STILL_CONTROL, (!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_state *sd_state, 545 struct v4l2_subdev_selection *sel) 546 { 547 struct i2c_client *client = v4l2_get_subdevdata(sd); 548 struct rj54n1 *rj54n1 = to_rj54n1(client); 549 const struct v4l2_rect *rect = &sel->r; 550 int output_w, output_h, input_w = rect->width, input_h = rect->height; 551 int ret; 552 553 if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE || 554 sel->target != V4L2_SEL_TGT_CROP) 555 return -EINVAL; 556 557 /* arbitrary minimum width and height, edges unimportant */ 558 v4l_bound_align_image(&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_state *sd_state, 582 struct v4l2_subdev_selection *sel) 583 { 584 struct i2c_client *client = v4l2_get_subdevdata(sd); 585 struct rj54n1 *rj54n1 = to_rj54n1(client); 586 587 if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) 588 return -EINVAL; 589 590 switch (sel->target) { 591 case V4L2_SEL_TGT_CROP_BOUNDS: 592 sel->r.left = RJ54N1_COLUMN_SKIP; 593 sel->r.top = RJ54N1_ROW_SKIP; 594 sel->r.width = RJ54N1_MAX_WIDTH; 595 sel->r.height = RJ54N1_MAX_HEIGHT; 596 return 0; 597 case V4L2_SEL_TGT_CROP: 598 sel->r = rj54n1->rect; 599 return 0; 600 default: 601 return -EINVAL; 602 } 603 } 604 605 static int rj54n1_get_fmt(struct v4l2_subdev *sd, 606 struct v4l2_subdev_state *sd_state, 607 struct v4l2_subdev_format *format) 608 { 609 struct v4l2_mbus_framefmt *mf = &format->format; 610 struct i2c_client *client = v4l2_get_subdevdata(sd); 611 struct rj54n1 *rj54n1 = to_rj54n1(client); 612 613 if (format->pad) 614 return -EINVAL; 615 616 mf->code = rj54n1->fmt->code; 617 mf->colorspace = rj54n1->fmt->colorspace; 618 mf->ycbcr_enc = V4L2_YCBCR_ENC_601; 619 mf->xfer_func = V4L2_XFER_FUNC_SRGB; 620 mf->quantization = V4L2_QUANTIZATION_DEFAULT; 621 mf->field = V4L2_FIELD_NONE; 622 mf->width = rj54n1->width; 623 mf->height = rj54n1->height; 624 625 return 0; 626 } 627 628 /* 629 * The actual geometry configuration routine. It scales the input window into 630 * the output one, updates the window sizes and returns an error or the resize 631 * coefficient on success. Note: we only use the "Fixed Scaling" on this camera. 632 */ 633 static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h, 634 s32 *out_w, s32 *out_h) 635 { 636 struct i2c_client *client = v4l2_get_subdevdata(sd); 637 struct rj54n1 *rj54n1 = to_rj54n1(client); 638 unsigned int skip, resize, input_w = *in_w, input_h = *in_h, 639 output_w = *out_w, output_h = *out_h; 640 u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom; 641 unsigned int peak, peak_50, peak_60; 642 int ret; 643 644 /* 645 * We have a problem with crops, where the window is larger than 512x384 646 * and output window is larger than a half of the input one. In this 647 * case we have to either reduce the input window to equal or below 648 * 512x384 or the output window to equal or below 1/2 of the input. 649 */ 650 if (output_w > max(512U, input_w / 2)) { 651 if (2 * output_w > RJ54N1_MAX_WIDTH) { 652 input_w = RJ54N1_MAX_WIDTH; 653 output_w = RJ54N1_MAX_WIDTH / 2; 654 } else { 655 input_w = output_w * 2; 656 } 657 658 dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n", 659 input_w, output_w); 660 } 661 662 if (output_h > max(384U, input_h / 2)) { 663 if (2 * output_h > RJ54N1_MAX_HEIGHT) { 664 input_h = RJ54N1_MAX_HEIGHT; 665 output_h = RJ54N1_MAX_HEIGHT / 2; 666 } else { 667 input_h = output_h * 2; 668 } 669 670 dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n", 671 input_h, output_h); 672 } 673 674 /* Idea: use the read mode for snapshots, handle separate geometries */ 675 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L, 676 RJ54N1_Y_OUTPUT_SIZE_S_L, 677 RJ54N1_XY_OUTPUT_SIZE_S_H, output_w, output_h); 678 if (!ret) 679 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L, 680 RJ54N1_Y_OUTPUT_SIZE_P_L, 681 RJ54N1_XY_OUTPUT_SIZE_P_H, output_w, output_h); 682 683 if (ret < 0) 684 return ret; 685 686 if (output_w > input_w && output_h > input_h) { 687 input_w = output_w; 688 input_h = output_h; 689 690 resize = 1024; 691 } else { 692 unsigned int resize_x, resize_y; 693 resize_x = (input_w * 1024 + output_w / 2) / output_w; 694 resize_y = (input_h * 1024 + output_h / 2) / output_h; 695 696 /* We want max(resize_x, resize_y), check if it still fits */ 697 if (resize_x > resize_y && 698 (output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT) 699 resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) / 700 output_h; 701 else if (resize_y > resize_x && 702 (output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH) 703 resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) / 704 output_w; 705 else 706 resize = max(resize_x, resize_y); 707 708 /* Prohibited value ranges */ 709 switch (resize) { 710 case 2040 ... 2047: 711 resize = 2039; 712 break; 713 case 4080 ... 4095: 714 resize = 4079; 715 break; 716 case 8160 ... 8191: 717 resize = 8159; 718 break; 719 case 16320 ... 16384: 720 resize = 16319; 721 } 722 } 723 724 /* Set scaling */ 725 ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, resize & 0xff); 726 if (!ret) 727 ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, resize >> 8); 728 729 if (ret < 0) 730 return ret; 731 732 /* 733 * Configure a skipping bitmask. The sensor will select a skipping value 734 * among set bits automatically. This is very unclear in the datasheet 735 * too. I was told, in this register one enables all skipping values, 736 * that are required for a specific resize, and the camera selects 737 * automatically, which ones to use. But it is unclear how to identify, 738 * which cropping values are needed. Secondly, why don't we just set all 739 * bits and let the camera choose? Would it increase processing time and 740 * reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to 741 * improve the image quality or stability for larger frames (see comment 742 * above), but I didn't check the framerate. 743 */ 744 skip = min(resize / 1024, 15U); 745 746 inc_sel = 1 << skip; 747 748 if (inc_sel <= 2) 749 inc_sel = 0xc; 750 else if (resize & 1023 && skip < 15) 751 inc_sel |= 1 << (skip + 1); 752 753 ret = reg_write(client, RJ54N1_INC_USE_SEL_L, inc_sel & 0xfc); 754 if (!ret) 755 ret = reg_write(client, RJ54N1_INC_USE_SEL_H, inc_sel >> 8); 756 757 if (!rj54n1->auto_wb) { 758 /* Auto white balance window */ 759 wb_left = output_w / 16; 760 wb_right = (3 * output_w / 4 - 3) / 4; 761 wb_top = output_h / 16; 762 wb_bottom = (3 * output_h / 4 - 3) / 4; 763 wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) | 764 ((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1); 765 766 if (!ret) 767 ret = reg_write(client, RJ54N1_BIT8_WB, wb_bit8); 768 if (!ret) 769 ret = reg_write(client, RJ54N1_HCAPS_WB, wb_left); 770 if (!ret) 771 ret = reg_write(client, RJ54N1_VCAPS_WB, wb_top); 772 if (!ret) 773 ret = reg_write(client, RJ54N1_HCAPE_WB, wb_right); 774 if (!ret) 775 ret = reg_write(client, RJ54N1_VCAPE_WB, wb_bottom); 776 } 777 778 /* Antiflicker */ 779 peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz / 780 10000; 781 peak_50 = peak / 6; 782 peak_60 = peak / 5; 783 784 if (!ret) 785 ret = reg_write(client, RJ54N1_PEAK_H, 786 ((peak_50 >> 4) & 0xf0) | (peak_60 >> 8)); 787 if (!ret) 788 ret = reg_write(client, RJ54N1_PEAK_50, peak_50); 789 if (!ret) 790 ret = reg_write(client, RJ54N1_PEAK_60, peak_60); 791 if (!ret) 792 ret = reg_write(client, RJ54N1_PEAK_DIFF, peak / 150); 793 794 /* Start resizing */ 795 if (!ret) 796 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, 797 RESIZE_HOLD_SEL | RESIZE_GO | 1); 798 799 if (ret < 0) 800 return ret; 801 802 /* Constant taken from manufacturer's example */ 803 msleep(230); 804 805 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1); 806 if (ret < 0) 807 return ret; 808 809 *in_w = (output_w * resize + 512) / 1024; 810 *in_h = (output_h * resize + 512) / 1024; 811 *out_w = output_w; 812 *out_h = output_h; 813 814 dev_dbg(&client->dev, "Scaled for %dx%d : %u = %ux%u, skip %u\n", 815 *in_w, *in_h, resize, output_w, output_h, skip); 816 817 return resize; 818 } 819 820 static int rj54n1_set_clock(struct i2c_client *client) 821 { 822 struct rj54n1 *rj54n1 = to_rj54n1(client); 823 int ret; 824 825 /* Enable external clock */ 826 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY); 827 /* Leave stand-by. Note: use this when implementing suspend / resume */ 828 if (!ret) 829 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK); 830 831 if (!ret) 832 ret = reg_write(client, RJ54N1_PLL_L, PLL_L); 833 if (!ret) 834 ret = reg_write(client, RJ54N1_PLL_N, PLL_N); 835 836 /* TGCLK dividers */ 837 if (!ret) 838 ret = reg_write(client, RJ54N1_RATIO_TG, 839 rj54n1->clk_div.ratio_tg); 840 if (!ret) 841 ret = reg_write(client, RJ54N1_RATIO_T, 842 rj54n1->clk_div.ratio_t); 843 if (!ret) 844 ret = reg_write(client, RJ54N1_RATIO_R, 845 rj54n1->clk_div.ratio_r); 846 847 /* Enable TGCLK & RAMP */ 848 if (!ret) 849 ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, 3); 850 851 /* Disable clock output */ 852 if (!ret) 853 ret = reg_write(client, RJ54N1_OCLK_DSP, 0); 854 855 /* Set divisors */ 856 if (!ret) 857 ret = reg_write(client, RJ54N1_RATIO_OP, 858 rj54n1->clk_div.ratio_op); 859 if (!ret) 860 ret = reg_write(client, RJ54N1_RATIO_O, 861 rj54n1->clk_div.ratio_o); 862 863 /* Enable OCLK */ 864 if (!ret) 865 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1); 866 867 /* Use PLL for Timing Generator, write 2 to reserved bits */ 868 if (!ret) 869 ret = reg_write(client, RJ54N1_TG_BYPASS, 2); 870 871 /* Take sensor out of reset */ 872 if (!ret) 873 ret = reg_write(client, RJ54N1_RESET_STANDBY, 874 E_EXCLK | SEN_RSTX); 875 /* Enable PLL */ 876 if (!ret) 877 ret = reg_write(client, RJ54N1_PLL_EN, 1); 878 879 /* Wait for PLL to stabilise */ 880 msleep(10); 881 882 /* Enable clock to frequency divider */ 883 if (!ret) 884 ret = reg_write(client, RJ54N1_CLK_RST, 1); 885 886 if (!ret) 887 ret = reg_read(client, RJ54N1_CLK_RST); 888 if (ret != 1) { 889 dev_err(&client->dev, 890 "Resetting RJ54N1CB0C clock failed: %d!\n", ret); 891 return -EIO; 892 } 893 894 /* Start the PLL */ 895 ret = reg_set(client, RJ54N1_OCLK_DSP, 1, 1); 896 897 /* Enable OCLK */ 898 if (!ret) 899 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1); 900 901 return ret; 902 } 903 904 static int rj54n1_reg_init(struct i2c_client *client) 905 { 906 struct rj54n1 *rj54n1 = to_rj54n1(client); 907 int ret = rj54n1_set_clock(client); 908 909 if (!ret) 910 ret = reg_write_multiple(client, bank_7, ARRAY_SIZE(bank_7)); 911 if (!ret) 912 ret = reg_write_multiple(client, bank_10, ARRAY_SIZE(bank_10)); 913 914 /* Set binning divisors */ 915 if (!ret) 916 ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, 3 | (7 << 4)); 917 if (!ret) 918 ret = reg_write(client, RJ54N1_SCALE_4_LEV, 0xf); 919 920 /* Switch to fixed resize mode */ 921 if (!ret) 922 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, 923 RESIZE_HOLD_SEL | 1); 924 925 /* Set gain */ 926 if (!ret) 927 ret = reg_write(client, RJ54N1_Y_GAIN, 0x84); 928 929 /* 930 * Mirror the image back: default is upside down and left-to-right... 931 * Set manual preview / still shot switching 932 */ 933 if (!ret) 934 ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, 0x27); 935 936 if (!ret) 937 ret = reg_write_multiple(client, bank_4, ARRAY_SIZE(bank_4)); 938 939 /* Auto exposure area */ 940 if (!ret) 941 ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, 0x80); 942 /* Check current auto WB config */ 943 if (!ret) 944 ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I); 945 if (ret >= 0) { 946 rj54n1->auto_wb = ret & 0x80; 947 ret = reg_write_multiple(client, bank_5, ARRAY_SIZE(bank_5)); 948 } 949 if (!ret) 950 ret = reg_write_multiple(client, bank_8, ARRAY_SIZE(bank_8)); 951 952 if (!ret) 953 ret = reg_write(client, RJ54N1_RESET_STANDBY, 954 E_EXCLK | DSP_RSTX | SEN_RSTX); 955 956 /* Commit init */ 957 if (!ret) 958 ret = rj54n1_commit(client); 959 960 /* Take DSP, TG, sensor out of reset */ 961 if (!ret) 962 ret = reg_write(client, RJ54N1_RESET_STANDBY, 963 E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX); 964 965 /* Start register update? Same register as 0x?FE in many bank_* sets */ 966 if (!ret) 967 ret = reg_write(client, RJ54N1_FWFLG, 2); 968 969 /* Constant taken from manufacturer's example */ 970 msleep(700); 971 972 return ret; 973 } 974 975 static int rj54n1_set_fmt(struct v4l2_subdev *sd, 976 struct v4l2_subdev_state *sd_state, 977 struct v4l2_subdev_format *format) 978 { 979 struct v4l2_mbus_framefmt *mf = &format->format; 980 struct i2c_client *client = v4l2_get_subdevdata(sd); 981 struct rj54n1 *rj54n1 = to_rj54n1(client); 982 const struct rj54n1_datafmt *fmt; 983 int output_w, output_h, max_w, max_h, 984 input_w = rj54n1->rect.width, input_h = rj54n1->rect.height; 985 int align = mf->code == MEDIA_BUS_FMT_SBGGR10_1X10 || 986 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE || 987 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE || 988 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE || 989 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE; 990 int ret; 991 992 if (format->pad) 993 return -EINVAL; 994 995 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n", 996 __func__, mf->code, mf->width, mf->height); 997 998 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts, 999 ARRAY_SIZE(rj54n1_colour_fmts)); 1000 if (!fmt) { 1001 fmt = rj54n1->fmt; 1002 mf->code = fmt->code; 1003 } 1004 1005 mf->field = V4L2_FIELD_NONE; 1006 mf->colorspace = fmt->colorspace; 1007 1008 v4l_bound_align_image(&mf->width, 112, RJ54N1_MAX_WIDTH, align, 1009 &mf->height, 84, RJ54N1_MAX_HEIGHT, align, 0); 1010 1011 if (format->which == V4L2_SUBDEV_FORMAT_TRY) 1012 return 0; 1013 1014 /* 1015 * Verify if the sensor has just been powered on. TODO: replace this 1016 * with proper PM, when a suitable API is available. 1017 */ 1018 ret = reg_read(client, RJ54N1_RESET_STANDBY); 1019 if (ret < 0) 1020 return ret; 1021 1022 if (!(ret & E_EXCLK)) { 1023 ret = rj54n1_reg_init(client); 1024 if (ret < 0) 1025 return ret; 1026 } 1027 1028 /* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */ 1029 switch (mf->code) { 1030 case MEDIA_BUS_FMT_YUYV8_2X8: 1031 ret = reg_write(client, RJ54N1_OUT_SEL, 0); 1032 if (!ret) 1033 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1034 break; 1035 case MEDIA_BUS_FMT_YVYU8_2X8: 1036 ret = reg_write(client, RJ54N1_OUT_SEL, 0); 1037 if (!ret) 1038 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1039 break; 1040 case MEDIA_BUS_FMT_RGB565_2X8_LE: 1041 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11); 1042 if (!ret) 1043 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1044 break; 1045 case MEDIA_BUS_FMT_RGB565_2X8_BE: 1046 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11); 1047 if (!ret) 1048 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1049 break; 1050 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE: 1051 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1052 if (!ret) 1053 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1054 if (!ret) 1055 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0); 1056 break; 1057 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE: 1058 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1059 if (!ret) 1060 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8); 1061 if (!ret) 1062 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8); 1063 break; 1064 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE: 1065 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1066 if (!ret) 1067 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1068 if (!ret) 1069 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0); 1070 break; 1071 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE: 1072 ret = reg_write(client, RJ54N1_OUT_SEL, 4); 1073 if (!ret) 1074 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8); 1075 if (!ret) 1076 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8); 1077 break; 1078 case MEDIA_BUS_FMT_SBGGR10_1X10: 1079 ret = reg_write(client, RJ54N1_OUT_SEL, 5); 1080 break; 1081 default: 1082 ret = -EINVAL; 1083 } 1084 1085 /* Special case: a raw mode with 10 bits of data per clock tick */ 1086 if (!ret) 1087 ret = reg_set(client, RJ54N1_OCLK_SEL_EN, 1088 (mf->code == MEDIA_BUS_FMT_SBGGR10_1X10) << 1, 2); 1089 1090 if (ret < 0) 1091 return ret; 1092 1093 /* Supported scales 1:1 >= scale > 1:16 */ 1094 max_w = mf->width * (16 * 1024 - 1) / 1024; 1095 if (input_w > max_w) 1096 input_w = max_w; 1097 max_h = mf->height * (16 * 1024 - 1) / 1024; 1098 if (input_h > max_h) 1099 input_h = max_h; 1100 1101 output_w = mf->width; 1102 output_h = mf->height; 1103 1104 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h); 1105 if (ret < 0) 1106 return ret; 1107 1108 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts, 1109 ARRAY_SIZE(rj54n1_colour_fmts)); 1110 1111 rj54n1->fmt = fmt; 1112 rj54n1->resize = ret; 1113 rj54n1->rect.width = input_w; 1114 rj54n1->rect.height = input_h; 1115 rj54n1->width = output_w; 1116 rj54n1->height = output_h; 1117 1118 mf->width = output_w; 1119 mf->height = output_h; 1120 mf->field = V4L2_FIELD_NONE; 1121 mf->colorspace = fmt->colorspace; 1122 1123 return 0; 1124 } 1125 1126 #ifdef CONFIG_VIDEO_ADV_DEBUG 1127 static int rj54n1_g_register(struct v4l2_subdev *sd, 1128 struct v4l2_dbg_register *reg) 1129 { 1130 struct i2c_client *client = v4l2_get_subdevdata(sd); 1131 1132 if (reg->reg < 0x400 || reg->reg > 0x1fff) 1133 /* Registers > 0x0800 are only available from Sharp support */ 1134 return -EINVAL; 1135 1136 reg->size = 1; 1137 reg->val = reg_read(client, reg->reg); 1138 1139 if (reg->val > 0xff) 1140 return -EIO; 1141 1142 return 0; 1143 } 1144 1145 static int rj54n1_s_register(struct v4l2_subdev *sd, 1146 const struct v4l2_dbg_register *reg) 1147 { 1148 struct i2c_client *client = v4l2_get_subdevdata(sd); 1149 1150 if (reg->reg < 0x400 || reg->reg > 0x1fff) 1151 /* Registers >= 0x0800 are only available from Sharp support */ 1152 return -EINVAL; 1153 1154 if (reg_write(client, reg->reg, reg->val) < 0) 1155 return -EIO; 1156 1157 return 0; 1158 } 1159 #endif 1160 1161 static int rj54n1_s_power(struct v4l2_subdev *sd, int on) 1162 { 1163 struct i2c_client *client = v4l2_get_subdevdata(sd); 1164 struct rj54n1 *rj54n1 = to_rj54n1(client); 1165 1166 if (on) { 1167 if (rj54n1->pwup_gpio) 1168 gpiod_set_value(rj54n1->pwup_gpio, 1); 1169 if (rj54n1->enable_gpio) 1170 gpiod_set_value(rj54n1->enable_gpio, 1); 1171 1172 msleep(1); 1173 1174 return clk_prepare_enable(rj54n1->clk); 1175 } 1176 1177 clk_disable_unprepare(rj54n1->clk); 1178 1179 if (rj54n1->enable_gpio) 1180 gpiod_set_value(rj54n1->enable_gpio, 0); 1181 if (rj54n1->pwup_gpio) 1182 gpiod_set_value(rj54n1->pwup_gpio, 0); 1183 1184 return 0; 1185 } 1186 1187 static int rj54n1_s_ctrl(struct v4l2_ctrl *ctrl) 1188 { 1189 struct rj54n1 *rj54n1 = container_of(ctrl->handler, struct rj54n1, hdl); 1190 struct v4l2_subdev *sd = &rj54n1->subdev; 1191 struct i2c_client *client = v4l2_get_subdevdata(sd); 1192 int data; 1193 1194 switch (ctrl->id) { 1195 case V4L2_CID_VFLIP: 1196 if (ctrl->val) 1197 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 1); 1198 else 1199 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 1, 1); 1200 if (data < 0) 1201 return -EIO; 1202 return 0; 1203 case V4L2_CID_HFLIP: 1204 if (ctrl->val) 1205 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 2); 1206 else 1207 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 2, 2); 1208 if (data < 0) 1209 return -EIO; 1210 return 0; 1211 case V4L2_CID_GAIN: 1212 if (reg_write(client, RJ54N1_Y_GAIN, ctrl->val * 2) < 0) 1213 return -EIO; 1214 return 0; 1215 case V4L2_CID_AUTO_WHITE_BALANCE: 1216 /* Auto WB area - whole image */ 1217 if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, ctrl->val << 7, 1218 0x80) < 0) 1219 return -EIO; 1220 rj54n1->auto_wb = ctrl->val; 1221 return 0; 1222 } 1223 1224 return -EINVAL; 1225 } 1226 1227 static const struct v4l2_ctrl_ops rj54n1_ctrl_ops = { 1228 .s_ctrl = rj54n1_s_ctrl, 1229 }; 1230 1231 static const struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = { 1232 #ifdef CONFIG_VIDEO_ADV_DEBUG 1233 .g_register = rj54n1_g_register, 1234 .s_register = rj54n1_s_register, 1235 #endif 1236 .s_power = rj54n1_s_power, 1237 }; 1238 1239 static const struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = { 1240 .s_stream = rj54n1_s_stream, 1241 }; 1242 1243 static const struct v4l2_subdev_pad_ops rj54n1_subdev_pad_ops = { 1244 .enum_mbus_code = rj54n1_enum_mbus_code, 1245 .get_selection = rj54n1_get_selection, 1246 .set_selection = rj54n1_set_selection, 1247 .get_fmt = rj54n1_get_fmt, 1248 .set_fmt = rj54n1_set_fmt, 1249 }; 1250 1251 static const struct v4l2_subdev_ops rj54n1_subdev_ops = { 1252 .core = &rj54n1_subdev_core_ops, 1253 .video = &rj54n1_subdev_video_ops, 1254 .pad = &rj54n1_subdev_pad_ops, 1255 }; 1256 1257 /* 1258 * Interface active, can use i2c. If it fails, it can indeed mean, that 1259 * this wasn't our capture interface, so, we wait for the right one 1260 */ 1261 static int rj54n1_video_probe(struct i2c_client *client, 1262 struct rj54n1_pdata *priv) 1263 { 1264 struct rj54n1 *rj54n1 = to_rj54n1(client); 1265 int data1, data2; 1266 int ret; 1267 1268 ret = rj54n1_s_power(&rj54n1->subdev, 1); 1269 if (ret < 0) 1270 return ret; 1271 1272 /* Read out the chip version register */ 1273 data1 = reg_read(client, RJ54N1_DEV_CODE); 1274 data2 = reg_read(client, RJ54N1_DEV_CODE2); 1275 1276 if (data1 != 0x51 || data2 != 0x10) { 1277 ret = -ENODEV; 1278 dev_info(&client->dev, "No RJ54N1CB0C found, read 0x%x:0x%x\n", 1279 data1, data2); 1280 goto done; 1281 } 1282 1283 /* Configure IOCTL polarity from the platform data: 0 or 1 << 7. */ 1284 ret = reg_write(client, RJ54N1_IOC, priv->ioctl_high << 7); 1285 if (ret < 0) 1286 goto done; 1287 1288 dev_info(&client->dev, "Detected a RJ54N1CB0C chip ID 0x%x:0x%x\n", 1289 data1, data2); 1290 1291 ret = v4l2_ctrl_handler_setup(&rj54n1->hdl); 1292 1293 done: 1294 rj54n1_s_power(&rj54n1->subdev, 0); 1295 return ret; 1296 } 1297 1298 static int rj54n1_probe(struct i2c_client *client) 1299 { 1300 struct rj54n1 *rj54n1; 1301 struct i2c_adapter *adapter = client->adapter; 1302 struct rj54n1_pdata *rj54n1_priv; 1303 int ret; 1304 1305 if (!client->dev.platform_data) { 1306 dev_err(&client->dev, "RJ54N1CB0C: missing platform data!\n"); 1307 return -EINVAL; 1308 } 1309 1310 rj54n1_priv = client->dev.platform_data; 1311 1312 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { 1313 dev_warn(&adapter->dev, 1314 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n"); 1315 return -EIO; 1316 } 1317 1318 rj54n1 = devm_kzalloc(&client->dev, sizeof(struct rj54n1), GFP_KERNEL); 1319 if (!rj54n1) 1320 return -ENOMEM; 1321 1322 v4l2_i2c_subdev_init(&rj54n1->subdev, client, &rj54n1_subdev_ops); 1323 v4l2_ctrl_handler_init(&rj54n1->hdl, 4); 1324 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops, 1325 V4L2_CID_VFLIP, 0, 1, 1, 0); 1326 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops, 1327 V4L2_CID_HFLIP, 0, 1, 1, 0); 1328 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops, 1329 V4L2_CID_GAIN, 0, 127, 1, 66); 1330 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops, 1331 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1); 1332 rj54n1->subdev.ctrl_handler = &rj54n1->hdl; 1333 if (rj54n1->hdl.error) 1334 return rj54n1->hdl.error; 1335 1336 rj54n1->clk_div = clk_div; 1337 rj54n1->rect.left = RJ54N1_COLUMN_SKIP; 1338 rj54n1->rect.top = RJ54N1_ROW_SKIP; 1339 rj54n1->rect.width = RJ54N1_MAX_WIDTH; 1340 rj54n1->rect.height = RJ54N1_MAX_HEIGHT; 1341 rj54n1->width = RJ54N1_MAX_WIDTH; 1342 rj54n1->height = RJ54N1_MAX_HEIGHT; 1343 rj54n1->fmt = &rj54n1_colour_fmts[0]; 1344 rj54n1->resize = 1024; 1345 rj54n1->tgclk_mhz = (rj54n1_priv->mclk_freq / PLL_L * PLL_N) / 1346 (clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1); 1347 1348 rj54n1->clk = clk_get(&client->dev, NULL); 1349 if (IS_ERR(rj54n1->clk)) { 1350 ret = PTR_ERR(rj54n1->clk); 1351 goto err_free_ctrl; 1352 } 1353 1354 rj54n1->pwup_gpio = gpiod_get_optional(&client->dev, "powerup", 1355 GPIOD_OUT_LOW); 1356 if (IS_ERR(rj54n1->pwup_gpio)) { 1357 dev_info(&client->dev, "Unable to get GPIO \"powerup\": %ld\n", 1358 PTR_ERR(rj54n1->pwup_gpio)); 1359 ret = PTR_ERR(rj54n1->pwup_gpio); 1360 goto err_clk_put; 1361 } 1362 1363 rj54n1->enable_gpio = gpiod_get_optional(&client->dev, "enable", 1364 GPIOD_OUT_LOW); 1365 if (IS_ERR(rj54n1->enable_gpio)) { 1366 dev_info(&client->dev, "Unable to get GPIO \"enable\": %ld\n", 1367 PTR_ERR(rj54n1->enable_gpio)); 1368 ret = PTR_ERR(rj54n1->enable_gpio); 1369 goto err_gpio_put; 1370 } 1371 1372 ret = rj54n1_video_probe(client, rj54n1_priv); 1373 if (ret < 0) 1374 goto err_gpio_put; 1375 1376 ret = v4l2_async_register_subdev(&rj54n1->subdev); 1377 if (ret) 1378 goto err_gpio_put; 1379 1380 return 0; 1381 1382 err_gpio_put: 1383 if (rj54n1->enable_gpio) 1384 gpiod_put(rj54n1->enable_gpio); 1385 1386 if (rj54n1->pwup_gpio) 1387 gpiod_put(rj54n1->pwup_gpio); 1388 1389 err_clk_put: 1390 clk_put(rj54n1->clk); 1391 1392 err_free_ctrl: 1393 v4l2_ctrl_handler_free(&rj54n1->hdl); 1394 1395 return ret; 1396 } 1397 1398 static void rj54n1_remove(struct i2c_client *client) 1399 { 1400 struct rj54n1 *rj54n1 = to_rj54n1(client); 1401 1402 if (rj54n1->enable_gpio) 1403 gpiod_put(rj54n1->enable_gpio); 1404 if (rj54n1->pwup_gpio) 1405 gpiod_put(rj54n1->pwup_gpio); 1406 1407 clk_put(rj54n1->clk); 1408 v4l2_ctrl_handler_free(&rj54n1->hdl); 1409 v4l2_async_unregister_subdev(&rj54n1->subdev); 1410 } 1411 1412 static const struct i2c_device_id rj54n1_id[] = { 1413 { "rj54n1cb0c", 0 }, 1414 { } 1415 }; 1416 MODULE_DEVICE_TABLE(i2c, rj54n1_id); 1417 1418 static struct i2c_driver rj54n1_i2c_driver = { 1419 .driver = { 1420 .name = "rj54n1cb0c", 1421 }, 1422 .probe = rj54n1_probe, 1423 .remove = rj54n1_remove, 1424 .id_table = rj54n1_id, 1425 }; 1426 1427 module_i2c_driver(rj54n1_i2c_driver); 1428 1429 MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver"); 1430 MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); 1431 MODULE_LICENSE("GPL v2"); 1432