1 /* 2 * Samsung LSI S5C73M3 8M pixel camera driver 3 * 4 * Copyright (C) 2012, Samsung Electronics, Co., Ltd. 5 * Sylwester Nawrocki <s.nawrocki@samsung.com> 6 * Andrzej Hajda <a.hajda@samsung.com> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * version 2 as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 */ 17 18 #include <linux/clk.h> 19 #include <linux/delay.h> 20 #include <linux/firmware.h> 21 #include <linux/gpio.h> 22 #include <linux/i2c.h> 23 #include <linux/init.h> 24 #include <linux/media.h> 25 #include <linux/module.h> 26 #include <linux/of_gpio.h> 27 #include <linux/regulator/consumer.h> 28 #include <linux/sizes.h> 29 #include <linux/slab.h> 30 #include <linux/spi/spi.h> 31 #include <linux/videodev2.h> 32 #include <media/media-entity.h> 33 #include <media/v4l2-ctrls.h> 34 #include <media/v4l2-device.h> 35 #include <media/v4l2-subdev.h> 36 #include <media/v4l2-mediabus.h> 37 #include <media/i2c/s5c73m3.h> 38 #include <media/v4l2-of.h> 39 40 #include "s5c73m3.h" 41 42 int s5c73m3_dbg; 43 module_param_named(debug, s5c73m3_dbg, int, 0644); 44 45 static int boot_from_rom = 1; 46 module_param(boot_from_rom, int, 0644); 47 48 static int update_fw; 49 module_param(update_fw, int, 0644); 50 51 #define S5C73M3_EMBEDDED_DATA_MAXLEN SZ_4K 52 #define S5C73M3_MIPI_DATA_LANES 4 53 #define S5C73M3_CLK_NAME "cis_extclk" 54 55 static const char * const s5c73m3_supply_names[S5C73M3_MAX_SUPPLIES] = { 56 "vdd-int", /* Digital Core supply (1.2V), CAM_ISP_CORE_1.2V */ 57 "vdda", /* Analog Core supply (1.2V), CAM_SENSOR_CORE_1.2V */ 58 "vdd-reg", /* Regulator input supply (2.8V), CAM_SENSOR_A2.8V */ 59 "vddio-host", /* Digital Host I/O power supply (1.8V...2.8V), 60 CAM_ISP_SENSOR_1.8V */ 61 "vddio-cis", /* Digital CIS I/O power (1.2V...1.8V), 62 CAM_ISP_MIPI_1.2V */ 63 "vdd-af", /* Lens, CAM_AF_2.8V */ 64 }; 65 66 static const struct s5c73m3_frame_size s5c73m3_isp_resolutions[] = { 67 { 320, 240, COMM_CHG_MODE_YUV_320_240 }, 68 { 352, 288, COMM_CHG_MODE_YUV_352_288 }, 69 { 640, 480, COMM_CHG_MODE_YUV_640_480 }, 70 { 880, 720, COMM_CHG_MODE_YUV_880_720 }, 71 { 960, 720, COMM_CHG_MODE_YUV_960_720 }, 72 { 1008, 672, COMM_CHG_MODE_YUV_1008_672 }, 73 { 1184, 666, COMM_CHG_MODE_YUV_1184_666 }, 74 { 1280, 720, COMM_CHG_MODE_YUV_1280_720 }, 75 { 1536, 864, COMM_CHG_MODE_YUV_1536_864 }, 76 { 1600, 1200, COMM_CHG_MODE_YUV_1600_1200 }, 77 { 1632, 1224, COMM_CHG_MODE_YUV_1632_1224 }, 78 { 1920, 1080, COMM_CHG_MODE_YUV_1920_1080 }, 79 { 1920, 1440, COMM_CHG_MODE_YUV_1920_1440 }, 80 { 2304, 1296, COMM_CHG_MODE_YUV_2304_1296 }, 81 { 3264, 2448, COMM_CHG_MODE_YUV_3264_2448 }, 82 }; 83 84 static const struct s5c73m3_frame_size s5c73m3_jpeg_resolutions[] = { 85 { 640, 480, COMM_CHG_MODE_JPEG_640_480 }, 86 { 800, 450, COMM_CHG_MODE_JPEG_800_450 }, 87 { 800, 600, COMM_CHG_MODE_JPEG_800_600 }, 88 { 1024, 768, COMM_CHG_MODE_JPEG_1024_768 }, 89 { 1280, 720, COMM_CHG_MODE_JPEG_1280_720 }, 90 { 1280, 960, COMM_CHG_MODE_JPEG_1280_960 }, 91 { 1600, 900, COMM_CHG_MODE_JPEG_1600_900 }, 92 { 1600, 1200, COMM_CHG_MODE_JPEG_1600_1200 }, 93 { 2048, 1152, COMM_CHG_MODE_JPEG_2048_1152 }, 94 { 2048, 1536, COMM_CHG_MODE_JPEG_2048_1536 }, 95 { 2560, 1440, COMM_CHG_MODE_JPEG_2560_1440 }, 96 { 2560, 1920, COMM_CHG_MODE_JPEG_2560_1920 }, 97 { 3264, 1836, COMM_CHG_MODE_JPEG_3264_1836 }, 98 { 3264, 2176, COMM_CHG_MODE_JPEG_3264_2176 }, 99 { 3264, 2448, COMM_CHG_MODE_JPEG_3264_2448 }, 100 }; 101 102 static const struct s5c73m3_frame_size * const s5c73m3_resolutions[] = { 103 [RES_ISP] = s5c73m3_isp_resolutions, 104 [RES_JPEG] = s5c73m3_jpeg_resolutions 105 }; 106 107 static const int s5c73m3_resolutions_len[] = { 108 [RES_ISP] = ARRAY_SIZE(s5c73m3_isp_resolutions), 109 [RES_JPEG] = ARRAY_SIZE(s5c73m3_jpeg_resolutions) 110 }; 111 112 static const struct s5c73m3_interval s5c73m3_intervals[] = { 113 { COMM_FRAME_RATE_FIXED_7FPS, {142857, 1000000}, {3264, 2448} }, 114 { COMM_FRAME_RATE_FIXED_15FPS, {66667, 1000000}, {3264, 2448} }, 115 { COMM_FRAME_RATE_FIXED_20FPS, {50000, 1000000}, {2304, 1296} }, 116 { COMM_FRAME_RATE_FIXED_30FPS, {33333, 1000000}, {2304, 1296} }, 117 }; 118 119 #define S5C73M3_DEFAULT_FRAME_INTERVAL 3 /* 30 fps */ 120 121 static void s5c73m3_fill_mbus_fmt(struct v4l2_mbus_framefmt *mf, 122 const struct s5c73m3_frame_size *fs, 123 u32 code) 124 { 125 mf->width = fs->width; 126 mf->height = fs->height; 127 mf->code = code; 128 mf->colorspace = V4L2_COLORSPACE_JPEG; 129 mf->field = V4L2_FIELD_NONE; 130 } 131 132 static int s5c73m3_i2c_write(struct i2c_client *client, u16 addr, u16 data) 133 { 134 u8 buf[4] = { addr >> 8, addr & 0xff, data >> 8, data & 0xff }; 135 136 int ret = i2c_master_send(client, buf, sizeof(buf)); 137 138 v4l_dbg(4, s5c73m3_dbg, client, "%s: addr 0x%04x, data 0x%04x\n", 139 __func__, addr, data); 140 141 if (ret == 4) 142 return 0; 143 144 return ret < 0 ? ret : -EREMOTEIO; 145 } 146 147 static int s5c73m3_i2c_read(struct i2c_client *client, u16 addr, u16 *data) 148 { 149 int ret; 150 u8 rbuf[2], wbuf[2] = { addr >> 8, addr & 0xff }; 151 struct i2c_msg msg[2] = { 152 { 153 .addr = client->addr, 154 .flags = 0, 155 .len = sizeof(wbuf), 156 .buf = wbuf 157 }, { 158 .addr = client->addr, 159 .flags = I2C_M_RD, 160 .len = sizeof(rbuf), 161 .buf = rbuf 162 } 163 }; 164 /* 165 * Issue repeated START after writing 2 address bytes and 166 * just one STOP only after reading the data bytes. 167 */ 168 ret = i2c_transfer(client->adapter, msg, 2); 169 if (ret == 2) { 170 *data = be16_to_cpup((__be16 *)rbuf); 171 v4l2_dbg(4, s5c73m3_dbg, client, 172 "%s: addr: 0x%04x, data: 0x%04x\n", 173 __func__, addr, *data); 174 return 0; 175 } 176 177 v4l2_err(client, "I2C read failed: addr: %04x, (%d)\n", addr, ret); 178 179 return ret >= 0 ? -EREMOTEIO : ret; 180 } 181 182 int s5c73m3_write(struct s5c73m3 *state, u32 addr, u16 data) 183 { 184 struct i2c_client *client = state->i2c_client; 185 int ret; 186 187 if ((addr ^ state->i2c_write_address) & 0xffff0000) { 188 ret = s5c73m3_i2c_write(client, REG_CMDWR_ADDRH, addr >> 16); 189 if (ret < 0) { 190 state->i2c_write_address = 0; 191 return ret; 192 } 193 } 194 195 if ((addr ^ state->i2c_write_address) & 0xffff) { 196 ret = s5c73m3_i2c_write(client, REG_CMDWR_ADDRL, addr & 0xffff); 197 if (ret < 0) { 198 state->i2c_write_address = 0; 199 return ret; 200 } 201 } 202 203 state->i2c_write_address = addr; 204 205 ret = s5c73m3_i2c_write(client, REG_CMDBUF_ADDR, data); 206 if (ret < 0) 207 return ret; 208 209 state->i2c_write_address += 2; 210 211 return ret; 212 } 213 214 int s5c73m3_read(struct s5c73m3 *state, u32 addr, u16 *data) 215 { 216 struct i2c_client *client = state->i2c_client; 217 int ret; 218 219 if ((addr ^ state->i2c_read_address) & 0xffff0000) { 220 ret = s5c73m3_i2c_write(client, REG_CMDRD_ADDRH, addr >> 16); 221 if (ret < 0) { 222 state->i2c_read_address = 0; 223 return ret; 224 } 225 } 226 227 if ((addr ^ state->i2c_read_address) & 0xffff) { 228 ret = s5c73m3_i2c_write(client, REG_CMDRD_ADDRL, addr & 0xffff); 229 if (ret < 0) { 230 state->i2c_read_address = 0; 231 return ret; 232 } 233 } 234 235 state->i2c_read_address = addr; 236 237 ret = s5c73m3_i2c_read(client, REG_CMDBUF_ADDR, data); 238 if (ret < 0) 239 return ret; 240 241 state->i2c_read_address += 2; 242 243 return ret; 244 } 245 246 static int s5c73m3_check_status(struct s5c73m3 *state, unsigned int value) 247 { 248 unsigned long start = jiffies; 249 unsigned long end = start + msecs_to_jiffies(2000); 250 int ret = 0; 251 u16 status; 252 int count = 0; 253 254 while (time_is_after_jiffies(end)) { 255 ret = s5c73m3_read(state, REG_STATUS, &status); 256 if (ret < 0 || status == value) 257 break; 258 usleep_range(500, 1000); 259 ++count; 260 } 261 262 if (count > 0) 263 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd, 264 "status check took %dms\n", 265 jiffies_to_msecs(jiffies - start)); 266 267 if (ret == 0 && status != value) { 268 u16 i2c_status = 0; 269 u16 i2c_seq_status = 0; 270 271 s5c73m3_read(state, REG_I2C_STATUS, &i2c_status); 272 s5c73m3_read(state, REG_I2C_SEQ_STATUS, &i2c_seq_status); 273 274 v4l2_err(&state->sensor_sd, 275 "wrong status %#x, expected: %#x, i2c_status: %#x/%#x\n", 276 status, value, i2c_status, i2c_seq_status); 277 278 return -ETIMEDOUT; 279 } 280 281 return ret; 282 } 283 284 int s5c73m3_isp_command(struct s5c73m3 *state, u16 command, u16 data) 285 { 286 int ret; 287 288 ret = s5c73m3_check_status(state, REG_STATUS_ISP_COMMAND_COMPLETED); 289 if (ret < 0) 290 return ret; 291 292 ret = s5c73m3_write(state, 0x00095000, command); 293 if (ret < 0) 294 return ret; 295 296 ret = s5c73m3_write(state, 0x00095002, data); 297 if (ret < 0) 298 return ret; 299 300 return s5c73m3_write(state, REG_STATUS, 0x0001); 301 } 302 303 static int s5c73m3_isp_comm_result(struct s5c73m3 *state, u16 command, 304 u16 *data) 305 { 306 return s5c73m3_read(state, COMM_RESULT_OFFSET + command, data); 307 } 308 309 static int s5c73m3_set_af_softlanding(struct s5c73m3 *state) 310 { 311 unsigned long start = jiffies; 312 u16 af_softlanding; 313 int count = 0; 314 int ret; 315 const char *msg; 316 317 ret = s5c73m3_isp_command(state, COMM_AF_SOFTLANDING, 318 COMM_AF_SOFTLANDING_ON); 319 if (ret < 0) { 320 v4l2_info(&state->sensor_sd, "AF soft-landing failed\n"); 321 return ret; 322 } 323 324 for (;;) { 325 ret = s5c73m3_isp_comm_result(state, COMM_AF_SOFTLANDING, 326 &af_softlanding); 327 if (ret < 0) { 328 msg = "failed"; 329 break; 330 } 331 if (af_softlanding == COMM_AF_SOFTLANDING_RES_COMPLETE) { 332 msg = "succeeded"; 333 break; 334 } 335 if (++count > 100) { 336 ret = -ETIME; 337 msg = "timed out"; 338 break; 339 } 340 msleep(25); 341 } 342 343 v4l2_info(&state->sensor_sd, "AF soft-landing %s after %dms\n", 344 msg, jiffies_to_msecs(jiffies - start)); 345 346 return ret; 347 } 348 349 static int s5c73m3_load_fw(struct v4l2_subdev *sd) 350 { 351 struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd); 352 struct i2c_client *client = state->i2c_client; 353 const struct firmware *fw; 354 int ret; 355 char fw_name[20]; 356 357 snprintf(fw_name, sizeof(fw_name), "SlimISP_%.2s.bin", 358 state->fw_file_version); 359 ret = request_firmware(&fw, fw_name, &client->dev); 360 if (ret < 0) { 361 v4l2_err(sd, "Firmware request failed (%s)\n", fw_name); 362 return -EINVAL; 363 } 364 365 v4l2_info(sd, "Loading firmware (%s, %zu B)\n", fw_name, fw->size); 366 367 ret = s5c73m3_spi_write(state, fw->data, fw->size, 64); 368 369 if (ret >= 0) 370 state->isp_ready = 1; 371 else 372 v4l2_err(sd, "SPI write failed\n"); 373 374 release_firmware(fw); 375 376 return ret; 377 } 378 379 static int s5c73m3_set_frame_size(struct s5c73m3 *state) 380 { 381 const struct s5c73m3_frame_size *prev_size = 382 state->sensor_pix_size[RES_ISP]; 383 const struct s5c73m3_frame_size *cap_size = 384 state->sensor_pix_size[RES_JPEG]; 385 unsigned int chg_mode; 386 387 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd, 388 "Preview size: %dx%d, reg_val: 0x%x\n", 389 prev_size->width, prev_size->height, prev_size->reg_val); 390 391 chg_mode = prev_size->reg_val | COMM_CHG_MODE_NEW; 392 393 if (state->mbus_code == S5C73M3_JPEG_FMT) { 394 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd, 395 "Capture size: %dx%d, reg_val: 0x%x\n", 396 cap_size->width, cap_size->height, cap_size->reg_val); 397 chg_mode |= cap_size->reg_val; 398 } 399 400 return s5c73m3_isp_command(state, COMM_CHG_MODE, chg_mode); 401 } 402 403 static int s5c73m3_set_frame_rate(struct s5c73m3 *state) 404 { 405 int ret; 406 407 if (state->ctrls.stabilization->val) 408 return 0; 409 410 if (WARN_ON(state->fiv == NULL)) 411 return -EINVAL; 412 413 ret = s5c73m3_isp_command(state, COMM_FRAME_RATE, state->fiv->fps_reg); 414 if (!ret) 415 state->apply_fiv = 0; 416 417 return ret; 418 } 419 420 static int __s5c73m3_s_stream(struct s5c73m3 *state, struct v4l2_subdev *sd, 421 int on) 422 { 423 u16 mode; 424 int ret; 425 426 if (on && state->apply_fmt) { 427 if (state->mbus_code == S5C73M3_JPEG_FMT) 428 mode = COMM_IMG_OUTPUT_INTERLEAVED; 429 else 430 mode = COMM_IMG_OUTPUT_YUV; 431 432 ret = s5c73m3_isp_command(state, COMM_IMG_OUTPUT, mode); 433 if (!ret) 434 ret = s5c73m3_set_frame_size(state); 435 if (ret) 436 return ret; 437 state->apply_fmt = 0; 438 } 439 440 ret = s5c73m3_isp_command(state, COMM_SENSOR_STREAMING, !!on); 441 if (ret) 442 return ret; 443 444 state->streaming = !!on; 445 446 if (!on) 447 return ret; 448 449 if (state->apply_fiv) { 450 ret = s5c73m3_set_frame_rate(state); 451 if (ret < 0) 452 v4l2_err(sd, "Error setting frame rate(%d)\n", ret); 453 } 454 455 return s5c73m3_check_status(state, REG_STATUS_ISP_COMMAND_COMPLETED); 456 } 457 458 static int s5c73m3_oif_s_stream(struct v4l2_subdev *sd, int on) 459 { 460 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 461 int ret; 462 463 mutex_lock(&state->lock); 464 ret = __s5c73m3_s_stream(state, sd, on); 465 mutex_unlock(&state->lock); 466 467 return ret; 468 } 469 470 static int s5c73m3_system_status_wait(struct s5c73m3 *state, u32 value, 471 unsigned int delay, unsigned int steps) 472 { 473 u16 reg = 0; 474 475 while (steps-- > 0) { 476 int ret = s5c73m3_read(state, 0x30100010, ®); 477 if (ret < 0) 478 return ret; 479 if (reg == value) 480 return 0; 481 usleep_range(delay, delay + 25); 482 } 483 return -ETIMEDOUT; 484 } 485 486 static int s5c73m3_read_fw_version(struct s5c73m3 *state) 487 { 488 struct v4l2_subdev *sd = &state->sensor_sd; 489 int i, ret; 490 u16 data[2]; 491 int offset; 492 493 offset = state->isp_ready ? 0x60 : 0; 494 495 for (i = 0; i < S5C73M3_SENSOR_FW_LEN / 2; i++) { 496 ret = s5c73m3_read(state, offset + i * 2, data); 497 if (ret < 0) 498 return ret; 499 state->sensor_fw[i * 2] = (char)(*data & 0xff); 500 state->sensor_fw[i * 2 + 1] = (char)(*data >> 8); 501 } 502 state->sensor_fw[S5C73M3_SENSOR_FW_LEN] = '\0'; 503 504 505 for (i = 0; i < S5C73M3_SENSOR_TYPE_LEN / 2; i++) { 506 ret = s5c73m3_read(state, offset + 6 + i * 2, data); 507 if (ret < 0) 508 return ret; 509 state->sensor_type[i * 2] = (char)(*data & 0xff); 510 state->sensor_type[i * 2 + 1] = (char)(*data >> 8); 511 } 512 state->sensor_type[S5C73M3_SENSOR_TYPE_LEN] = '\0'; 513 514 ret = s5c73m3_read(state, offset + 0x14, data); 515 if (ret >= 0) { 516 ret = s5c73m3_read(state, offset + 0x16, data + 1); 517 if (ret >= 0) 518 state->fw_size = data[0] + (data[1] << 16); 519 } 520 521 v4l2_info(sd, "Sensor type: %s, FW version: %s\n", 522 state->sensor_type, state->sensor_fw); 523 return ret; 524 } 525 526 static int s5c73m3_fw_update_from(struct s5c73m3 *state) 527 { 528 struct v4l2_subdev *sd = &state->sensor_sd; 529 u16 status = COMM_FW_UPDATE_NOT_READY; 530 int ret; 531 int count = 0; 532 533 v4l2_warn(sd, "Updating F-ROM firmware.\n"); 534 do { 535 if (status == COMM_FW_UPDATE_NOT_READY) { 536 ret = s5c73m3_isp_command(state, COMM_FW_UPDATE, 0); 537 if (ret < 0) 538 return ret; 539 } 540 541 ret = s5c73m3_read(state, 0x00095906, &status); 542 if (ret < 0) 543 return ret; 544 switch (status) { 545 case COMM_FW_UPDATE_FAIL: 546 v4l2_warn(sd, "Updating F-ROM firmware failed.\n"); 547 return -EIO; 548 case COMM_FW_UPDATE_SUCCESS: 549 v4l2_warn(sd, "Updating F-ROM firmware finished.\n"); 550 return 0; 551 } 552 ++count; 553 msleep(20); 554 } while (count < 500); 555 556 v4l2_warn(sd, "Updating F-ROM firmware timed-out.\n"); 557 return -ETIMEDOUT; 558 } 559 560 static int s5c73m3_spi_boot(struct s5c73m3 *state, bool load_fw) 561 { 562 struct v4l2_subdev *sd = &state->sensor_sd; 563 int ret; 564 565 /* Run ARM MCU */ 566 ret = s5c73m3_write(state, 0x30000004, 0xffff); 567 if (ret < 0) 568 return ret; 569 570 usleep_range(400, 500); 571 572 /* Check booting status */ 573 ret = s5c73m3_system_status_wait(state, 0x0c, 100, 3); 574 if (ret < 0) { 575 v4l2_err(sd, "booting failed: %d\n", ret); 576 return ret; 577 } 578 579 /* P,M,S and Boot Mode */ 580 ret = s5c73m3_write(state, 0x30100014, 0x2146); 581 if (ret < 0) 582 return ret; 583 584 ret = s5c73m3_write(state, 0x30100010, 0x210c); 585 if (ret < 0) 586 return ret; 587 588 usleep_range(200, 250); 589 590 /* Check SPI status */ 591 ret = s5c73m3_system_status_wait(state, 0x210d, 100, 300); 592 if (ret < 0) 593 v4l2_err(sd, "SPI not ready: %d\n", ret); 594 595 /* Firmware download over SPI */ 596 if (load_fw) 597 s5c73m3_load_fw(sd); 598 599 /* MCU reset */ 600 ret = s5c73m3_write(state, 0x30000004, 0xfffd); 601 if (ret < 0) 602 return ret; 603 604 /* Remap */ 605 ret = s5c73m3_write(state, 0x301000a4, 0x0183); 606 if (ret < 0) 607 return ret; 608 609 /* MCU restart */ 610 ret = s5c73m3_write(state, 0x30000004, 0xffff); 611 if (ret < 0 || !load_fw) 612 return ret; 613 614 ret = s5c73m3_read_fw_version(state); 615 if (ret < 0) 616 return ret; 617 618 if (load_fw && update_fw) { 619 ret = s5c73m3_fw_update_from(state); 620 update_fw = 0; 621 } 622 623 return ret; 624 } 625 626 static int s5c73m3_set_timing_register_for_vdd(struct s5c73m3 *state) 627 { 628 static const u32 regs[][2] = { 629 { 0x30100018, 0x0618 }, 630 { 0x3010001c, 0x10c1 }, 631 { 0x30100020, 0x249e } 632 }; 633 int ret; 634 int i; 635 636 for (i = 0; i < ARRAY_SIZE(regs); i++) { 637 ret = s5c73m3_write(state, regs[i][0], regs[i][1]); 638 if (ret < 0) 639 return ret; 640 } 641 642 return 0; 643 } 644 645 static void s5c73m3_set_fw_file_version(struct s5c73m3 *state) 646 { 647 switch (state->sensor_fw[0]) { 648 case 'G': 649 case 'O': 650 state->fw_file_version[0] = 'G'; 651 break; 652 case 'S': 653 case 'Z': 654 state->fw_file_version[0] = 'Z'; 655 break; 656 } 657 658 switch (state->sensor_fw[1]) { 659 case 'C'...'F': 660 state->fw_file_version[1] = state->sensor_fw[1]; 661 break; 662 } 663 } 664 665 static int s5c73m3_get_fw_version(struct s5c73m3 *state) 666 { 667 struct v4l2_subdev *sd = &state->sensor_sd; 668 int ret; 669 670 /* Run ARM MCU */ 671 ret = s5c73m3_write(state, 0x30000004, 0xffff); 672 if (ret < 0) 673 return ret; 674 usleep_range(400, 500); 675 676 /* Check booting status */ 677 ret = s5c73m3_system_status_wait(state, 0x0c, 100, 3); 678 if (ret < 0) { 679 680 v4l2_err(sd, "%s: booting failed: %d\n", __func__, ret); 681 return ret; 682 } 683 684 /* Change I/O Driver Current in order to read from F-ROM */ 685 ret = s5c73m3_write(state, 0x30100120, 0x0820); 686 ret = s5c73m3_write(state, 0x30100124, 0x0820); 687 688 /* Offset Setting */ 689 ret = s5c73m3_write(state, 0x00010418, 0x0008); 690 691 /* P,M,S and Boot Mode */ 692 ret = s5c73m3_write(state, 0x30100014, 0x2146); 693 if (ret < 0) 694 return ret; 695 ret = s5c73m3_write(state, 0x30100010, 0x230c); 696 if (ret < 0) 697 return ret; 698 699 usleep_range(200, 250); 700 701 /* Check SPI status */ 702 ret = s5c73m3_system_status_wait(state, 0x230e, 100, 300); 703 if (ret < 0) 704 v4l2_err(sd, "SPI not ready: %d\n", ret); 705 706 /* ARM reset */ 707 ret = s5c73m3_write(state, 0x30000004, 0xfffd); 708 if (ret < 0) 709 return ret; 710 711 /* Remap */ 712 ret = s5c73m3_write(state, 0x301000a4, 0x0183); 713 if (ret < 0) 714 return ret; 715 716 s5c73m3_set_timing_register_for_vdd(state); 717 718 ret = s5c73m3_read_fw_version(state); 719 720 s5c73m3_set_fw_file_version(state); 721 722 return ret; 723 } 724 725 static int s5c73m3_rom_boot(struct s5c73m3 *state, bool load_fw) 726 { 727 static const u32 boot_regs[][2] = { 728 { 0x3100010c, 0x0044 }, 729 { 0x31000108, 0x000d }, 730 { 0x31000304, 0x0001 }, 731 { 0x00010000, 0x5800 }, 732 { 0x00010002, 0x0002 }, 733 { 0x31000000, 0x0001 }, 734 { 0x30100014, 0x1b85 }, 735 { 0x30100010, 0x230c } 736 }; 737 struct v4l2_subdev *sd = &state->sensor_sd; 738 int i, ret; 739 740 /* Run ARM MCU */ 741 ret = s5c73m3_write(state, 0x30000004, 0xffff); 742 if (ret < 0) 743 return ret; 744 usleep_range(400, 450); 745 746 /* Check booting status */ 747 ret = s5c73m3_system_status_wait(state, 0x0c, 100, 4); 748 if (ret < 0) { 749 v4l2_err(sd, "Booting failed: %d\n", ret); 750 return ret; 751 } 752 753 for (i = 0; i < ARRAY_SIZE(boot_regs); i++) { 754 ret = s5c73m3_write(state, boot_regs[i][0], boot_regs[i][1]); 755 if (ret < 0) 756 return ret; 757 } 758 msleep(200); 759 760 /* Check the binary read status */ 761 ret = s5c73m3_system_status_wait(state, 0x230e, 1000, 150); 762 if (ret < 0) { 763 v4l2_err(sd, "Binary read failed: %d\n", ret); 764 return ret; 765 } 766 767 /* ARM reset */ 768 ret = s5c73m3_write(state, 0x30000004, 0xfffd); 769 if (ret < 0) 770 return ret; 771 /* Remap */ 772 ret = s5c73m3_write(state, 0x301000a4, 0x0183); 773 if (ret < 0) 774 return ret; 775 /* MCU re-start */ 776 ret = s5c73m3_write(state, 0x30000004, 0xffff); 777 if (ret < 0) 778 return ret; 779 780 state->isp_ready = 1; 781 782 return s5c73m3_read_fw_version(state); 783 } 784 785 static int s5c73m3_isp_init(struct s5c73m3 *state) 786 { 787 int ret; 788 789 state->i2c_read_address = 0; 790 state->i2c_write_address = 0; 791 792 ret = s5c73m3_i2c_write(state->i2c_client, AHB_MSB_ADDR_PTR, 0x3310); 793 if (ret < 0) 794 return ret; 795 796 if (boot_from_rom) 797 return s5c73m3_rom_boot(state, true); 798 else 799 return s5c73m3_spi_boot(state, true); 800 } 801 802 static const struct s5c73m3_frame_size *s5c73m3_find_frame_size( 803 struct v4l2_mbus_framefmt *fmt, 804 enum s5c73m3_resolution_types idx) 805 { 806 const struct s5c73m3_frame_size *fs; 807 const struct s5c73m3_frame_size *best_fs; 808 int best_dist = INT_MAX; 809 int i; 810 811 fs = s5c73m3_resolutions[idx]; 812 best_fs = NULL; 813 for (i = 0; i < s5c73m3_resolutions_len[idx]; ++i) { 814 int dist = abs(fs->width - fmt->width) + 815 abs(fs->height - fmt->height); 816 if (dist < best_dist) { 817 best_dist = dist; 818 best_fs = fs; 819 } 820 ++fs; 821 } 822 823 return best_fs; 824 } 825 826 static void s5c73m3_oif_try_format(struct s5c73m3 *state, 827 struct v4l2_subdev_pad_config *cfg, 828 struct v4l2_subdev_format *fmt, 829 const struct s5c73m3_frame_size **fs) 830 { 831 struct v4l2_subdev *sd = &state->sensor_sd; 832 u32 code; 833 834 switch (fmt->pad) { 835 case OIF_ISP_PAD: 836 *fs = s5c73m3_find_frame_size(&fmt->format, RES_ISP); 837 code = S5C73M3_ISP_FMT; 838 break; 839 case OIF_JPEG_PAD: 840 *fs = s5c73m3_find_frame_size(&fmt->format, RES_JPEG); 841 code = S5C73M3_JPEG_FMT; 842 break; 843 case OIF_SOURCE_PAD: 844 default: 845 if (fmt->format.code == S5C73M3_JPEG_FMT) 846 code = S5C73M3_JPEG_FMT; 847 else 848 code = S5C73M3_ISP_FMT; 849 850 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) 851 *fs = state->oif_pix_size[RES_ISP]; 852 else 853 *fs = s5c73m3_find_frame_size( 854 v4l2_subdev_get_try_format(sd, cfg, 855 OIF_ISP_PAD), 856 RES_ISP); 857 break; 858 } 859 860 s5c73m3_fill_mbus_fmt(&fmt->format, *fs, code); 861 } 862 863 static void s5c73m3_try_format(struct s5c73m3 *state, 864 struct v4l2_subdev_pad_config *cfg, 865 struct v4l2_subdev_format *fmt, 866 const struct s5c73m3_frame_size **fs) 867 { 868 u32 code; 869 870 if (fmt->pad == S5C73M3_ISP_PAD) { 871 *fs = s5c73m3_find_frame_size(&fmt->format, RES_ISP); 872 code = S5C73M3_ISP_FMT; 873 } else { 874 *fs = s5c73m3_find_frame_size(&fmt->format, RES_JPEG); 875 code = S5C73M3_JPEG_FMT; 876 } 877 878 s5c73m3_fill_mbus_fmt(&fmt->format, *fs, code); 879 } 880 881 static int s5c73m3_oif_g_frame_interval(struct v4l2_subdev *sd, 882 struct v4l2_subdev_frame_interval *fi) 883 { 884 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 885 886 if (fi->pad != OIF_SOURCE_PAD) 887 return -EINVAL; 888 889 mutex_lock(&state->lock); 890 fi->interval = state->fiv->interval; 891 mutex_unlock(&state->lock); 892 893 return 0; 894 } 895 896 static int __s5c73m3_set_frame_interval(struct s5c73m3 *state, 897 struct v4l2_subdev_frame_interval *fi) 898 { 899 const struct s5c73m3_frame_size *prev_size = 900 state->sensor_pix_size[RES_ISP]; 901 const struct s5c73m3_interval *fiv = &s5c73m3_intervals[0]; 902 unsigned int ret, min_err = UINT_MAX; 903 unsigned int i, fr_time; 904 905 if (fi->interval.denominator == 0) 906 return -EINVAL; 907 908 fr_time = fi->interval.numerator * 1000 / fi->interval.denominator; 909 910 for (i = 0; i < ARRAY_SIZE(s5c73m3_intervals); i++) { 911 const struct s5c73m3_interval *iv = &s5c73m3_intervals[i]; 912 913 if (prev_size->width > iv->size.width || 914 prev_size->height > iv->size.height) 915 continue; 916 917 ret = abs(iv->interval.numerator / 1000 - fr_time); 918 if (ret < min_err) { 919 fiv = iv; 920 min_err = ret; 921 } 922 } 923 state->fiv = fiv; 924 925 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd, 926 "Changed frame interval to %u us\n", fiv->interval.numerator); 927 return 0; 928 } 929 930 static int s5c73m3_oif_s_frame_interval(struct v4l2_subdev *sd, 931 struct v4l2_subdev_frame_interval *fi) 932 { 933 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 934 int ret; 935 936 if (fi->pad != OIF_SOURCE_PAD) 937 return -EINVAL; 938 939 v4l2_dbg(1, s5c73m3_dbg, sd, "Setting %d/%d frame interval\n", 940 fi->interval.numerator, fi->interval.denominator); 941 942 mutex_lock(&state->lock); 943 944 ret = __s5c73m3_set_frame_interval(state, fi); 945 if (!ret) { 946 if (state->streaming) 947 ret = s5c73m3_set_frame_rate(state); 948 else 949 state->apply_fiv = 1; 950 } 951 mutex_unlock(&state->lock); 952 return ret; 953 } 954 955 static int s5c73m3_oif_enum_frame_interval(struct v4l2_subdev *sd, 956 struct v4l2_subdev_pad_config *cfg, 957 struct v4l2_subdev_frame_interval_enum *fie) 958 { 959 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 960 const struct s5c73m3_interval *fi; 961 int ret = 0; 962 963 if (fie->pad != OIF_SOURCE_PAD) 964 return -EINVAL; 965 if (fie->index >= ARRAY_SIZE(s5c73m3_intervals)) 966 return -EINVAL; 967 968 mutex_lock(&state->lock); 969 fi = &s5c73m3_intervals[fie->index]; 970 if (fie->width > fi->size.width || fie->height > fi->size.height) 971 ret = -EINVAL; 972 else 973 fie->interval = fi->interval; 974 mutex_unlock(&state->lock); 975 976 return ret; 977 } 978 979 static int s5c73m3_oif_get_pad_code(int pad, int index) 980 { 981 if (pad == OIF_SOURCE_PAD) { 982 if (index > 1) 983 return -EINVAL; 984 return (index == 0) ? S5C73M3_ISP_FMT : S5C73M3_JPEG_FMT; 985 } 986 987 if (index > 0) 988 return -EINVAL; 989 990 return (pad == OIF_ISP_PAD) ? S5C73M3_ISP_FMT : S5C73M3_JPEG_FMT; 991 } 992 993 static int s5c73m3_get_fmt(struct v4l2_subdev *sd, 994 struct v4l2_subdev_pad_config *cfg, 995 struct v4l2_subdev_format *fmt) 996 { 997 struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd); 998 const struct s5c73m3_frame_size *fs; 999 u32 code; 1000 1001 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1002 fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad); 1003 return 0; 1004 } 1005 1006 mutex_lock(&state->lock); 1007 1008 switch (fmt->pad) { 1009 case S5C73M3_ISP_PAD: 1010 code = S5C73M3_ISP_FMT; 1011 fs = state->sensor_pix_size[RES_ISP]; 1012 break; 1013 case S5C73M3_JPEG_PAD: 1014 code = S5C73M3_JPEG_FMT; 1015 fs = state->sensor_pix_size[RES_JPEG]; 1016 break; 1017 default: 1018 mutex_unlock(&state->lock); 1019 return -EINVAL; 1020 } 1021 s5c73m3_fill_mbus_fmt(&fmt->format, fs, code); 1022 1023 mutex_unlock(&state->lock); 1024 return 0; 1025 } 1026 1027 static int s5c73m3_oif_get_fmt(struct v4l2_subdev *sd, 1028 struct v4l2_subdev_pad_config *cfg, 1029 struct v4l2_subdev_format *fmt) 1030 { 1031 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 1032 const struct s5c73m3_frame_size *fs; 1033 u32 code; 1034 1035 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1036 fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad); 1037 return 0; 1038 } 1039 1040 mutex_lock(&state->lock); 1041 1042 switch (fmt->pad) { 1043 case OIF_ISP_PAD: 1044 code = S5C73M3_ISP_FMT; 1045 fs = state->oif_pix_size[RES_ISP]; 1046 break; 1047 case OIF_JPEG_PAD: 1048 code = S5C73M3_JPEG_FMT; 1049 fs = state->oif_pix_size[RES_JPEG]; 1050 break; 1051 case OIF_SOURCE_PAD: 1052 code = state->mbus_code; 1053 fs = state->oif_pix_size[RES_ISP]; 1054 break; 1055 default: 1056 mutex_unlock(&state->lock); 1057 return -EINVAL; 1058 } 1059 s5c73m3_fill_mbus_fmt(&fmt->format, fs, code); 1060 1061 mutex_unlock(&state->lock); 1062 return 0; 1063 } 1064 1065 static int s5c73m3_set_fmt(struct v4l2_subdev *sd, 1066 struct v4l2_subdev_pad_config *cfg, 1067 struct v4l2_subdev_format *fmt) 1068 { 1069 const struct s5c73m3_frame_size *frame_size = NULL; 1070 struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd); 1071 struct v4l2_mbus_framefmt *mf; 1072 int ret = 0; 1073 1074 mutex_lock(&state->lock); 1075 1076 s5c73m3_try_format(state, cfg, fmt, &frame_size); 1077 1078 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1079 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); 1080 *mf = fmt->format; 1081 } else { 1082 switch (fmt->pad) { 1083 case S5C73M3_ISP_PAD: 1084 state->sensor_pix_size[RES_ISP] = frame_size; 1085 break; 1086 case S5C73M3_JPEG_PAD: 1087 state->sensor_pix_size[RES_JPEG] = frame_size; 1088 break; 1089 default: 1090 ret = -EBUSY; 1091 } 1092 1093 if (state->streaming) 1094 ret = -EBUSY; 1095 else 1096 state->apply_fmt = 1; 1097 } 1098 1099 mutex_unlock(&state->lock); 1100 1101 return ret; 1102 } 1103 1104 static int s5c73m3_oif_set_fmt(struct v4l2_subdev *sd, 1105 struct v4l2_subdev_pad_config *cfg, 1106 struct v4l2_subdev_format *fmt) 1107 { 1108 const struct s5c73m3_frame_size *frame_size = NULL; 1109 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 1110 struct v4l2_mbus_framefmt *mf; 1111 int ret = 0; 1112 1113 mutex_lock(&state->lock); 1114 1115 s5c73m3_oif_try_format(state, cfg, fmt, &frame_size); 1116 1117 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1118 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); 1119 *mf = fmt->format; 1120 if (fmt->pad == OIF_ISP_PAD) { 1121 mf = v4l2_subdev_get_try_format(sd, cfg, OIF_SOURCE_PAD); 1122 mf->width = fmt->format.width; 1123 mf->height = fmt->format.height; 1124 } 1125 } else { 1126 switch (fmt->pad) { 1127 case OIF_ISP_PAD: 1128 state->oif_pix_size[RES_ISP] = frame_size; 1129 break; 1130 case OIF_JPEG_PAD: 1131 state->oif_pix_size[RES_JPEG] = frame_size; 1132 break; 1133 case OIF_SOURCE_PAD: 1134 state->mbus_code = fmt->format.code; 1135 break; 1136 default: 1137 ret = -EBUSY; 1138 } 1139 1140 if (state->streaming) 1141 ret = -EBUSY; 1142 else 1143 state->apply_fmt = 1; 1144 } 1145 1146 mutex_unlock(&state->lock); 1147 1148 return ret; 1149 } 1150 1151 static int s5c73m3_oif_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, 1152 struct v4l2_mbus_frame_desc *fd) 1153 { 1154 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 1155 int i; 1156 1157 if (pad != OIF_SOURCE_PAD || fd == NULL) 1158 return -EINVAL; 1159 1160 mutex_lock(&state->lock); 1161 fd->num_entries = 2; 1162 for (i = 0; i < fd->num_entries; i++) 1163 fd->entry[i] = state->frame_desc.entry[i]; 1164 mutex_unlock(&state->lock); 1165 1166 return 0; 1167 } 1168 1169 static int s5c73m3_oif_set_frame_desc(struct v4l2_subdev *sd, unsigned int pad, 1170 struct v4l2_mbus_frame_desc *fd) 1171 { 1172 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 1173 struct v4l2_mbus_frame_desc *frame_desc = &state->frame_desc; 1174 int i; 1175 1176 if (pad != OIF_SOURCE_PAD || fd == NULL) 1177 return -EINVAL; 1178 1179 fd->entry[0].length = 10 * SZ_1M; 1180 fd->entry[1].length = max_t(u32, fd->entry[1].length, 1181 S5C73M3_EMBEDDED_DATA_MAXLEN); 1182 fd->num_entries = 2; 1183 1184 mutex_lock(&state->lock); 1185 for (i = 0; i < fd->num_entries; i++) 1186 frame_desc->entry[i] = fd->entry[i]; 1187 mutex_unlock(&state->lock); 1188 1189 return 0; 1190 } 1191 1192 static int s5c73m3_enum_mbus_code(struct v4l2_subdev *sd, 1193 struct v4l2_subdev_pad_config *cfg, 1194 struct v4l2_subdev_mbus_code_enum *code) 1195 { 1196 static const int codes[] = { 1197 [S5C73M3_ISP_PAD] = S5C73M3_ISP_FMT, 1198 [S5C73M3_JPEG_PAD] = S5C73M3_JPEG_FMT}; 1199 1200 if (code->index > 0 || code->pad >= S5C73M3_NUM_PADS) 1201 return -EINVAL; 1202 1203 code->code = codes[code->pad]; 1204 1205 return 0; 1206 } 1207 1208 static int s5c73m3_oif_enum_mbus_code(struct v4l2_subdev *sd, 1209 struct v4l2_subdev_pad_config *cfg, 1210 struct v4l2_subdev_mbus_code_enum *code) 1211 { 1212 int ret; 1213 1214 ret = s5c73m3_oif_get_pad_code(code->pad, code->index); 1215 if (ret < 0) 1216 return ret; 1217 1218 code->code = ret; 1219 1220 return 0; 1221 } 1222 1223 static int s5c73m3_enum_frame_size(struct v4l2_subdev *sd, 1224 struct v4l2_subdev_pad_config *cfg, 1225 struct v4l2_subdev_frame_size_enum *fse) 1226 { 1227 int idx; 1228 1229 if (fse->pad == S5C73M3_ISP_PAD) { 1230 if (fse->code != S5C73M3_ISP_FMT) 1231 return -EINVAL; 1232 idx = RES_ISP; 1233 } else{ 1234 if (fse->code != S5C73M3_JPEG_FMT) 1235 return -EINVAL; 1236 idx = RES_JPEG; 1237 } 1238 1239 if (fse->index >= s5c73m3_resolutions_len[idx]) 1240 return -EINVAL; 1241 1242 fse->min_width = s5c73m3_resolutions[idx][fse->index].width; 1243 fse->max_width = fse->min_width; 1244 fse->max_height = s5c73m3_resolutions[idx][fse->index].height; 1245 fse->min_height = fse->max_height; 1246 1247 return 0; 1248 } 1249 1250 static int s5c73m3_oif_enum_frame_size(struct v4l2_subdev *sd, 1251 struct v4l2_subdev_pad_config *cfg, 1252 struct v4l2_subdev_frame_size_enum *fse) 1253 { 1254 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 1255 int idx; 1256 1257 if (fse->pad == OIF_SOURCE_PAD) { 1258 if (fse->index > 0) 1259 return -EINVAL; 1260 1261 switch (fse->code) { 1262 case S5C73M3_JPEG_FMT: 1263 case S5C73M3_ISP_FMT: { 1264 unsigned w, h; 1265 1266 if (fse->which == V4L2_SUBDEV_FORMAT_TRY) { 1267 struct v4l2_mbus_framefmt *mf; 1268 1269 mf = v4l2_subdev_get_try_format(sd, cfg, 1270 OIF_ISP_PAD); 1271 1272 w = mf->width; 1273 h = mf->height; 1274 } else { 1275 const struct s5c73m3_frame_size *fs; 1276 1277 fs = state->oif_pix_size[RES_ISP]; 1278 w = fs->width; 1279 h = fs->height; 1280 } 1281 fse->max_width = fse->min_width = w; 1282 fse->max_height = fse->min_height = h; 1283 return 0; 1284 } 1285 default: 1286 return -EINVAL; 1287 } 1288 } 1289 1290 if (fse->code != s5c73m3_oif_get_pad_code(fse->pad, 0)) 1291 return -EINVAL; 1292 1293 if (fse->pad == OIF_JPEG_PAD) 1294 idx = RES_JPEG; 1295 else 1296 idx = RES_ISP; 1297 1298 if (fse->index >= s5c73m3_resolutions_len[idx]) 1299 return -EINVAL; 1300 1301 fse->min_width = s5c73m3_resolutions[idx][fse->index].width; 1302 fse->max_width = fse->min_width; 1303 fse->max_height = s5c73m3_resolutions[idx][fse->index].height; 1304 fse->min_height = fse->max_height; 1305 1306 return 0; 1307 } 1308 1309 static int s5c73m3_oif_log_status(struct v4l2_subdev *sd) 1310 { 1311 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 1312 1313 v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name); 1314 1315 v4l2_info(sd, "power: %d, apply_fmt: %d\n", state->power, 1316 state->apply_fmt); 1317 1318 return 0; 1319 } 1320 1321 static int s5c73m3_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) 1322 { 1323 struct v4l2_mbus_framefmt *mf; 1324 1325 mf = v4l2_subdev_get_try_format(sd, fh->pad, S5C73M3_ISP_PAD); 1326 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1], 1327 S5C73M3_ISP_FMT); 1328 1329 mf = v4l2_subdev_get_try_format(sd, fh->pad, S5C73M3_JPEG_PAD); 1330 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_jpeg_resolutions[1], 1331 S5C73M3_JPEG_FMT); 1332 1333 return 0; 1334 } 1335 1336 static int s5c73m3_oif_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) 1337 { 1338 struct v4l2_mbus_framefmt *mf; 1339 1340 mf = v4l2_subdev_get_try_format(sd, fh->pad, OIF_ISP_PAD); 1341 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1], 1342 S5C73M3_ISP_FMT); 1343 1344 mf = v4l2_subdev_get_try_format(sd, fh->pad, OIF_JPEG_PAD); 1345 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_jpeg_resolutions[1], 1346 S5C73M3_JPEG_FMT); 1347 1348 mf = v4l2_subdev_get_try_format(sd, fh->pad, OIF_SOURCE_PAD); 1349 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1], 1350 S5C73M3_ISP_FMT); 1351 return 0; 1352 } 1353 1354 static int s5c73m3_gpio_set_value(struct s5c73m3 *priv, int id, u32 val) 1355 { 1356 if (!gpio_is_valid(priv->gpio[id].gpio)) 1357 return 0; 1358 gpio_set_value(priv->gpio[id].gpio, !!val); 1359 return 1; 1360 } 1361 1362 static int s5c73m3_gpio_assert(struct s5c73m3 *priv, int id) 1363 { 1364 return s5c73m3_gpio_set_value(priv, id, priv->gpio[id].level); 1365 } 1366 1367 static int s5c73m3_gpio_deassert(struct s5c73m3 *priv, int id) 1368 { 1369 return s5c73m3_gpio_set_value(priv, id, !priv->gpio[id].level); 1370 } 1371 1372 static int __s5c73m3_power_on(struct s5c73m3 *state) 1373 { 1374 int i, ret; 1375 1376 for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++) { 1377 ret = regulator_enable(state->supplies[i].consumer); 1378 if (ret) 1379 goto err_reg_dis; 1380 } 1381 1382 ret = clk_set_rate(state->clock, state->mclk_frequency); 1383 if (ret < 0) 1384 goto err_reg_dis; 1385 1386 ret = clk_prepare_enable(state->clock); 1387 if (ret < 0) 1388 goto err_reg_dis; 1389 1390 v4l2_dbg(1, s5c73m3_dbg, &state->oif_sd, "clock frequency: %ld\n", 1391 clk_get_rate(state->clock)); 1392 1393 s5c73m3_gpio_deassert(state, STBY); 1394 usleep_range(100, 200); 1395 1396 s5c73m3_gpio_deassert(state, RST); 1397 usleep_range(50, 100); 1398 1399 return 0; 1400 1401 err_reg_dis: 1402 for (--i; i >= 0; i--) 1403 regulator_disable(state->supplies[i].consumer); 1404 return ret; 1405 } 1406 1407 static int __s5c73m3_power_off(struct s5c73m3 *state) 1408 { 1409 int i, ret; 1410 1411 if (s5c73m3_gpio_assert(state, RST)) 1412 usleep_range(10, 50); 1413 1414 if (s5c73m3_gpio_assert(state, STBY)) 1415 usleep_range(100, 200); 1416 1417 clk_disable_unprepare(state->clock); 1418 1419 state->streaming = 0; 1420 state->isp_ready = 0; 1421 1422 for (i = S5C73M3_MAX_SUPPLIES - 1; i >= 0; i--) { 1423 ret = regulator_disable(state->supplies[i].consumer); 1424 if (ret) 1425 goto err; 1426 } 1427 1428 return 0; 1429 err: 1430 for (++i; i < S5C73M3_MAX_SUPPLIES; i++) { 1431 int r = regulator_enable(state->supplies[i].consumer); 1432 if (r < 0) 1433 v4l2_err(&state->oif_sd, "Failed to reenable %s: %d\n", 1434 state->supplies[i].supply, r); 1435 } 1436 1437 clk_prepare_enable(state->clock); 1438 return ret; 1439 } 1440 1441 static int s5c73m3_oif_set_power(struct v4l2_subdev *sd, int on) 1442 { 1443 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 1444 int ret = 0; 1445 1446 mutex_lock(&state->lock); 1447 1448 if (on && !state->power) { 1449 ret = __s5c73m3_power_on(state); 1450 if (!ret) 1451 ret = s5c73m3_isp_init(state); 1452 if (!ret) { 1453 state->apply_fiv = 1; 1454 state->apply_fmt = 1; 1455 } 1456 } else if (state->power == !on) { 1457 ret = s5c73m3_set_af_softlanding(state); 1458 if (!ret) 1459 ret = __s5c73m3_power_off(state); 1460 else 1461 v4l2_err(sd, "Soft landing lens failed\n"); 1462 } 1463 if (!ret) 1464 state->power += on ? 1 : -1; 1465 1466 v4l2_dbg(1, s5c73m3_dbg, sd, "%s: power: %d\n", 1467 __func__, state->power); 1468 1469 mutex_unlock(&state->lock); 1470 return ret; 1471 } 1472 1473 static int s5c73m3_oif_registered(struct v4l2_subdev *sd) 1474 { 1475 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 1476 int ret; 1477 1478 ret = v4l2_device_register_subdev(sd->v4l2_dev, &state->sensor_sd); 1479 if (ret) { 1480 v4l2_err(sd->v4l2_dev, "Failed to register %s\n", 1481 state->oif_sd.name); 1482 return ret; 1483 } 1484 1485 ret = media_create_pad_link(&state->sensor_sd.entity, 1486 S5C73M3_ISP_PAD, &state->oif_sd.entity, OIF_ISP_PAD, 1487 MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); 1488 1489 ret = media_create_pad_link(&state->sensor_sd.entity, 1490 S5C73M3_JPEG_PAD, &state->oif_sd.entity, OIF_JPEG_PAD, 1491 MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); 1492 1493 return ret; 1494 } 1495 1496 static void s5c73m3_oif_unregistered(struct v4l2_subdev *sd) 1497 { 1498 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd); 1499 v4l2_device_unregister_subdev(&state->sensor_sd); 1500 } 1501 1502 static const struct v4l2_subdev_internal_ops s5c73m3_internal_ops = { 1503 .open = s5c73m3_open, 1504 }; 1505 1506 static const struct v4l2_subdev_pad_ops s5c73m3_pad_ops = { 1507 .enum_mbus_code = s5c73m3_enum_mbus_code, 1508 .enum_frame_size = s5c73m3_enum_frame_size, 1509 .get_fmt = s5c73m3_get_fmt, 1510 .set_fmt = s5c73m3_set_fmt, 1511 }; 1512 1513 static const struct v4l2_subdev_ops s5c73m3_subdev_ops = { 1514 .pad = &s5c73m3_pad_ops, 1515 }; 1516 1517 static const struct v4l2_subdev_internal_ops oif_internal_ops = { 1518 .registered = s5c73m3_oif_registered, 1519 .unregistered = s5c73m3_oif_unregistered, 1520 .open = s5c73m3_oif_open, 1521 }; 1522 1523 static const struct v4l2_subdev_pad_ops s5c73m3_oif_pad_ops = { 1524 .enum_mbus_code = s5c73m3_oif_enum_mbus_code, 1525 .enum_frame_size = s5c73m3_oif_enum_frame_size, 1526 .enum_frame_interval = s5c73m3_oif_enum_frame_interval, 1527 .get_fmt = s5c73m3_oif_get_fmt, 1528 .set_fmt = s5c73m3_oif_set_fmt, 1529 .get_frame_desc = s5c73m3_oif_get_frame_desc, 1530 .set_frame_desc = s5c73m3_oif_set_frame_desc, 1531 }; 1532 1533 static const struct v4l2_subdev_core_ops s5c73m3_oif_core_ops = { 1534 .s_power = s5c73m3_oif_set_power, 1535 .log_status = s5c73m3_oif_log_status, 1536 }; 1537 1538 static const struct v4l2_subdev_video_ops s5c73m3_oif_video_ops = { 1539 .s_stream = s5c73m3_oif_s_stream, 1540 .g_frame_interval = s5c73m3_oif_g_frame_interval, 1541 .s_frame_interval = s5c73m3_oif_s_frame_interval, 1542 }; 1543 1544 static const struct v4l2_subdev_ops oif_subdev_ops = { 1545 .core = &s5c73m3_oif_core_ops, 1546 .pad = &s5c73m3_oif_pad_ops, 1547 .video = &s5c73m3_oif_video_ops, 1548 }; 1549 1550 static int s5c73m3_configure_gpios(struct s5c73m3 *state) 1551 { 1552 static const char * const gpio_names[] = { 1553 "S5C73M3_STBY", "S5C73M3_RST" 1554 }; 1555 struct i2c_client *c = state->i2c_client; 1556 struct s5c73m3_gpio *g = state->gpio; 1557 int ret, i; 1558 1559 for (i = 0; i < GPIO_NUM; ++i) { 1560 unsigned int flags = GPIOF_DIR_OUT; 1561 if (g[i].level) 1562 flags |= GPIOF_INIT_HIGH; 1563 ret = devm_gpio_request_one(&c->dev, g[i].gpio, flags, 1564 gpio_names[i]); 1565 if (ret) { 1566 v4l2_err(c, "failed to request gpio %s\n", 1567 gpio_names[i]); 1568 return ret; 1569 } 1570 } 1571 return 0; 1572 } 1573 1574 static int s5c73m3_parse_gpios(struct s5c73m3 *state) 1575 { 1576 static const char * const prop_names[] = { 1577 "standby-gpios", "xshutdown-gpios", 1578 }; 1579 struct device *dev = &state->i2c_client->dev; 1580 struct device_node *node = dev->of_node; 1581 int ret, i; 1582 1583 for (i = 0; i < GPIO_NUM; ++i) { 1584 enum of_gpio_flags of_flags; 1585 1586 ret = of_get_named_gpio_flags(node, prop_names[i], 1587 0, &of_flags); 1588 if (ret < 0) { 1589 dev_err(dev, "failed to parse %s DT property\n", 1590 prop_names[i]); 1591 return -EINVAL; 1592 } 1593 state->gpio[i].gpio = ret; 1594 state->gpio[i].level = !(of_flags & OF_GPIO_ACTIVE_LOW); 1595 } 1596 return 0; 1597 } 1598 1599 static int s5c73m3_get_platform_data(struct s5c73m3 *state) 1600 { 1601 struct device *dev = &state->i2c_client->dev; 1602 const struct s5c73m3_platform_data *pdata = dev->platform_data; 1603 struct device_node *node = dev->of_node; 1604 struct device_node *node_ep; 1605 struct v4l2_of_endpoint ep; 1606 int ret; 1607 1608 if (!node) { 1609 if (!pdata) { 1610 dev_err(dev, "Platform data not specified\n"); 1611 return -EINVAL; 1612 } 1613 1614 state->mclk_frequency = pdata->mclk_frequency; 1615 state->gpio[STBY] = pdata->gpio_stby; 1616 state->gpio[RST] = pdata->gpio_reset; 1617 return 0; 1618 } 1619 1620 state->clock = devm_clk_get(dev, S5C73M3_CLK_NAME); 1621 if (IS_ERR(state->clock)) 1622 return PTR_ERR(state->clock); 1623 1624 if (of_property_read_u32(node, "clock-frequency", 1625 &state->mclk_frequency)) { 1626 state->mclk_frequency = S5C73M3_DEFAULT_MCLK_FREQ; 1627 dev_info(dev, "using default %u Hz clock frequency\n", 1628 state->mclk_frequency); 1629 } 1630 1631 ret = s5c73m3_parse_gpios(state); 1632 if (ret < 0) 1633 return -EINVAL; 1634 1635 node_ep = of_graph_get_next_endpoint(node, NULL); 1636 if (!node_ep) { 1637 dev_warn(dev, "no endpoint defined for node: %s\n", 1638 node->full_name); 1639 return 0; 1640 } 1641 1642 ret = v4l2_of_parse_endpoint(node_ep, &ep); 1643 of_node_put(node_ep); 1644 if (ret) 1645 return ret; 1646 1647 if (ep.bus_type != V4L2_MBUS_CSI2) { 1648 dev_err(dev, "unsupported bus type\n"); 1649 return -EINVAL; 1650 } 1651 /* 1652 * Number of MIPI CSI-2 data lanes is currently not configurable, 1653 * always a default value of 4 lanes is used. 1654 */ 1655 if (ep.bus.mipi_csi2.num_data_lanes != S5C73M3_MIPI_DATA_LANES) 1656 dev_info(dev, "falling back to 4 MIPI CSI-2 data lanes\n"); 1657 1658 return 0; 1659 } 1660 1661 static int s5c73m3_probe(struct i2c_client *client, 1662 const struct i2c_device_id *id) 1663 { 1664 struct device *dev = &client->dev; 1665 struct v4l2_subdev *sd; 1666 struct v4l2_subdev *oif_sd; 1667 struct s5c73m3 *state; 1668 int ret, i; 1669 1670 state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL); 1671 if (!state) 1672 return -ENOMEM; 1673 1674 state->i2c_client = client; 1675 ret = s5c73m3_get_platform_data(state); 1676 if (ret < 0) 1677 return ret; 1678 1679 mutex_init(&state->lock); 1680 sd = &state->sensor_sd; 1681 oif_sd = &state->oif_sd; 1682 1683 v4l2_subdev_init(sd, &s5c73m3_subdev_ops); 1684 sd->owner = client->dev.driver->owner; 1685 v4l2_set_subdevdata(sd, state); 1686 strlcpy(sd->name, "S5C73M3", sizeof(sd->name)); 1687 1688 sd->internal_ops = &s5c73m3_internal_ops; 1689 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1690 1691 state->sensor_pads[S5C73M3_JPEG_PAD].flags = MEDIA_PAD_FL_SOURCE; 1692 state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE; 1693 sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; 1694 1695 ret = media_entity_pads_init(&sd->entity, S5C73M3_NUM_PADS, 1696 state->sensor_pads); 1697 if (ret < 0) 1698 return ret; 1699 1700 v4l2_i2c_subdev_init(oif_sd, client, &oif_subdev_ops); 1701 strcpy(oif_sd->name, "S5C73M3-OIF"); 1702 1703 oif_sd->internal_ops = &oif_internal_ops; 1704 oif_sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1705 1706 state->oif_pads[OIF_ISP_PAD].flags = MEDIA_PAD_FL_SINK; 1707 state->oif_pads[OIF_JPEG_PAD].flags = MEDIA_PAD_FL_SINK; 1708 state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE; 1709 oif_sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; 1710 1711 ret = media_entity_pads_init(&oif_sd->entity, OIF_NUM_PADS, 1712 state->oif_pads); 1713 if (ret < 0) 1714 return ret; 1715 1716 ret = s5c73m3_configure_gpios(state); 1717 if (ret) 1718 goto out_err; 1719 1720 for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++) 1721 state->supplies[i].supply = s5c73m3_supply_names[i]; 1722 1723 ret = devm_regulator_bulk_get(dev, S5C73M3_MAX_SUPPLIES, 1724 state->supplies); 1725 if (ret) { 1726 dev_err(dev, "failed to get regulators\n"); 1727 goto out_err; 1728 } 1729 1730 ret = s5c73m3_init_controls(state); 1731 if (ret) 1732 goto out_err; 1733 1734 state->sensor_pix_size[RES_ISP] = &s5c73m3_isp_resolutions[1]; 1735 state->sensor_pix_size[RES_JPEG] = &s5c73m3_jpeg_resolutions[1]; 1736 state->oif_pix_size[RES_ISP] = state->sensor_pix_size[RES_ISP]; 1737 state->oif_pix_size[RES_JPEG] = state->sensor_pix_size[RES_JPEG]; 1738 1739 state->mbus_code = S5C73M3_ISP_FMT; 1740 1741 state->fiv = &s5c73m3_intervals[S5C73M3_DEFAULT_FRAME_INTERVAL]; 1742 1743 state->fw_file_version[0] = 'G'; 1744 state->fw_file_version[1] = 'C'; 1745 1746 ret = s5c73m3_register_spi_driver(state); 1747 if (ret < 0) 1748 goto out_err; 1749 1750 oif_sd->dev = dev; 1751 1752 ret = __s5c73m3_power_on(state); 1753 if (ret < 0) 1754 goto out_err1; 1755 1756 ret = s5c73m3_get_fw_version(state); 1757 __s5c73m3_power_off(state); 1758 1759 if (ret < 0) { 1760 dev_err(dev, "Device detection failed: %d\n", ret); 1761 goto out_err1; 1762 } 1763 1764 ret = v4l2_async_register_subdev(oif_sd); 1765 if (ret < 0) 1766 goto out_err1; 1767 1768 v4l2_info(sd, "%s: completed successfully\n", __func__); 1769 return 0; 1770 1771 out_err1: 1772 s5c73m3_unregister_spi_driver(state); 1773 out_err: 1774 media_entity_cleanup(&sd->entity); 1775 return ret; 1776 } 1777 1778 static int s5c73m3_remove(struct i2c_client *client) 1779 { 1780 struct v4l2_subdev *oif_sd = i2c_get_clientdata(client); 1781 struct s5c73m3 *state = oif_sd_to_s5c73m3(oif_sd); 1782 struct v4l2_subdev *sensor_sd = &state->sensor_sd; 1783 1784 v4l2_async_unregister_subdev(oif_sd); 1785 1786 v4l2_ctrl_handler_free(oif_sd->ctrl_handler); 1787 media_entity_cleanup(&oif_sd->entity); 1788 1789 v4l2_device_unregister_subdev(sensor_sd); 1790 media_entity_cleanup(&sensor_sd->entity); 1791 1792 s5c73m3_unregister_spi_driver(state); 1793 1794 return 0; 1795 } 1796 1797 static const struct i2c_device_id s5c73m3_id[] = { 1798 { DRIVER_NAME, 0 }, 1799 { } 1800 }; 1801 MODULE_DEVICE_TABLE(i2c, s5c73m3_id); 1802 1803 #ifdef CONFIG_OF 1804 static const struct of_device_id s5c73m3_of_match[] = { 1805 { .compatible = "samsung,s5c73m3" }, 1806 { } 1807 }; 1808 MODULE_DEVICE_TABLE(of, s5c73m3_of_match); 1809 #endif 1810 1811 static struct i2c_driver s5c73m3_i2c_driver = { 1812 .driver = { 1813 .of_match_table = of_match_ptr(s5c73m3_of_match), 1814 .name = DRIVER_NAME, 1815 }, 1816 .probe = s5c73m3_probe, 1817 .remove = s5c73m3_remove, 1818 .id_table = s5c73m3_id, 1819 }; 1820 1821 module_i2c_driver(s5c73m3_i2c_driver); 1822 1823 MODULE_DESCRIPTION("Samsung S5C73M3 camera driver"); 1824 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>"); 1825 MODULE_LICENSE("GPL"); 1826