1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Support for mt9m114 Camera Sensor. 4 * 5 * Copyright (c) 2010 Intel Corporation. All Rights Reserved. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License version 9 * 2 as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * 17 */ 18 19 #include <linux/module.h> 20 #include <linux/types.h> 21 #include <linux/kernel.h> 22 #include <linux/mm.h> 23 #include <linux/string.h> 24 #include <linux/errno.h> 25 #include <linux/init.h> 26 #include <linux/kmod.h> 27 #include <linux/device.h> 28 #include <linux/fs.h> 29 #include <linux/slab.h> 30 #include <linux/delay.h> 31 #include <linux/i2c.h> 32 #include <linux/acpi.h> 33 #include "../include/linux/atomisp_gmin_platform.h" 34 #include <media/v4l2-device.h> 35 36 #include "mt9m114.h" 37 38 #define to_mt9m114_sensor(sd) container_of(sd, struct mt9m114_device, sd) 39 40 /* 41 * TODO: use debug parameter to actually define when debug messages should 42 * be printed. 43 */ 44 static int debug; 45 static int aaalock; 46 module_param(debug, int, 0644); 47 MODULE_PARM_DESC(debug, "Debug level (0-1)"); 48 49 static int mt9m114_t_vflip(struct v4l2_subdev *sd, int value); 50 static int mt9m114_t_hflip(struct v4l2_subdev *sd, int value); 51 static int mt9m114_wait_state(struct i2c_client *client, int timeout); 52 53 static int 54 mt9m114_read_reg(struct i2c_client *client, u16 data_length, u32 reg, u32 *val) 55 { 56 int err; 57 struct i2c_msg msg[2]; 58 unsigned char data[4]; 59 60 if (!client->adapter) { 61 v4l2_err(client, "%s error, no client->adapter\n", __func__); 62 return -ENODEV; 63 } 64 65 if (data_length != MISENSOR_8BIT && data_length != MISENSOR_16BIT 66 && data_length != MISENSOR_32BIT) { 67 v4l2_err(client, "%s error, invalid data length\n", __func__); 68 return -EINVAL; 69 } 70 71 msg[0].addr = client->addr; 72 msg[0].flags = 0; 73 msg[0].len = MSG_LEN_OFFSET; 74 msg[0].buf = data; 75 76 /* high byte goes out first */ 77 data[0] = (u16)(reg >> 8); 78 data[1] = (u16)(reg & 0xff); 79 80 msg[1].addr = client->addr; 81 msg[1].len = data_length; 82 msg[1].flags = I2C_M_RD; 83 msg[1].buf = data; 84 85 err = i2c_transfer(client->adapter, msg, 2); 86 87 if (err >= 0) { 88 *val = 0; 89 /* high byte comes first */ 90 if (data_length == MISENSOR_8BIT) 91 *val = data[0]; 92 else if (data_length == MISENSOR_16BIT) 93 *val = data[1] + (data[0] << 8); 94 else 95 *val = data[3] + (data[2] << 8) + 96 (data[1] << 16) + (data[0] << 24); 97 98 return 0; 99 } 100 101 dev_err(&client->dev, "read from offset 0x%x error %d", reg, err); 102 return err; 103 } 104 105 static int 106 mt9m114_write_reg(struct i2c_client *client, u16 data_length, u16 reg, u32 val) 107 { 108 int num_msg; 109 struct i2c_msg msg; 110 unsigned char data[6] = {0}; 111 __be16 *wreg; 112 int retry = 0; 113 114 if (!client->adapter) { 115 v4l2_err(client, "%s error, no client->adapter\n", __func__); 116 return -ENODEV; 117 } 118 119 if (data_length != MISENSOR_8BIT && data_length != MISENSOR_16BIT 120 && data_length != MISENSOR_32BIT) { 121 v4l2_err(client, "%s error, invalid data_length\n", __func__); 122 return -EINVAL; 123 } 124 125 memset(&msg, 0, sizeof(msg)); 126 127 again: 128 msg.addr = client->addr; 129 msg.flags = 0; 130 msg.len = 2 + data_length; 131 msg.buf = data; 132 133 /* high byte goes out first */ 134 wreg = (void *)data; 135 *wreg = cpu_to_be16(reg); 136 137 if (data_length == MISENSOR_8BIT) { 138 data[2] = (u8)(val); 139 } else if (data_length == MISENSOR_16BIT) { 140 u16 *wdata = (void *)&data[2]; 141 142 *wdata = be16_to_cpu(*(__be16 *)&data[2]); 143 } else { 144 /* MISENSOR_32BIT */ 145 u32 *wdata = (void *)&data[2]; 146 147 *wdata = be32_to_cpu(*(__be32 *)&data[2]); 148 } 149 150 num_msg = i2c_transfer(client->adapter, &msg, 1); 151 152 /* 153 * HACK: Need some delay here for Rev 2 sensors otherwise some 154 * registers do not seem to load correctly. 155 */ 156 mdelay(1); 157 158 if (num_msg >= 0) 159 return 0; 160 161 dev_err(&client->dev, "write error: wrote 0x%x to offset 0x%x error %d", 162 val, reg, num_msg); 163 if (retry <= I2C_RETRY_COUNT) { 164 dev_dbg(&client->dev, "retrying... %d", retry); 165 retry++; 166 msleep(20); 167 goto again; 168 } 169 170 return num_msg; 171 } 172 173 /** 174 * misensor_rmw_reg - Read/Modify/Write a value to a register in the sensor 175 * device 176 * @client: i2c driver client structure 177 * @data_length: 8/16/32-bits length 178 * @reg: register address 179 * @mask: masked out bits 180 * @set: bits set 181 * 182 * Read/modify/write a value to a register in the sensor device. 183 * Returns zero if successful, or non-zero otherwise. 184 */ 185 static int 186 misensor_rmw_reg(struct i2c_client *client, u16 data_length, u16 reg, 187 u32 mask, u32 set) 188 { 189 int err; 190 u32 val; 191 192 /* Exit when no mask */ 193 if (mask == 0) 194 return 0; 195 196 /* @mask must not exceed data length */ 197 switch (data_length) { 198 case MISENSOR_8BIT: 199 if (mask & ~0xff) 200 return -EINVAL; 201 break; 202 case MISENSOR_16BIT: 203 if (mask & ~0xffff) 204 return -EINVAL; 205 break; 206 case MISENSOR_32BIT: 207 break; 208 default: 209 /* Wrong @data_length */ 210 return -EINVAL; 211 } 212 213 err = mt9m114_read_reg(client, data_length, reg, &val); 214 if (err) { 215 v4l2_err(client, "%s error exit, read failed\n", __func__); 216 return -EINVAL; 217 } 218 219 val &= ~mask; 220 221 /* 222 * Perform the OR function if the @set exists. 223 * Shift @set value to target bit location. @set should set only 224 * bits included in @mask. 225 * 226 * REVISIT: This function expects @set to be non-shifted. Its shift 227 * value is then defined to be equal to mask's LSB position. 228 * How about to inform values in their right offset position and avoid 229 * this unneeded shift operation? 230 */ 231 set <<= ffs(mask) - 1; 232 val |= set & mask; 233 234 err = mt9m114_write_reg(client, data_length, reg, val); 235 if (err) { 236 v4l2_err(client, "%s error exit, write failed\n", __func__); 237 return -EINVAL; 238 } 239 240 return 0; 241 } 242 243 static int __mt9m114_flush_reg_array(struct i2c_client *client, 244 struct mt9m114_write_ctrl *ctrl) 245 { 246 struct i2c_msg msg; 247 const int num_msg = 1; 248 int ret; 249 int retry = 0; 250 __be16 *data16 = (void *)&ctrl->buffer.addr; 251 252 if (ctrl->index == 0) 253 return 0; 254 255 again: 256 msg.addr = client->addr; 257 msg.flags = 0; 258 msg.len = 2 + ctrl->index; 259 *data16 = cpu_to_be16(ctrl->buffer.addr); 260 msg.buf = (u8 *)&ctrl->buffer; 261 262 ret = i2c_transfer(client->adapter, &msg, num_msg); 263 if (ret != num_msg) { 264 if (++retry <= I2C_RETRY_COUNT) { 265 dev_dbg(&client->dev, "retrying... %d\n", retry); 266 msleep(20); 267 goto again; 268 } 269 dev_err(&client->dev, "%s: i2c transfer error\n", __func__); 270 return -EIO; 271 } 272 273 ctrl->index = 0; 274 275 /* 276 * REVISIT: Previously we had a delay after writing data to sensor. 277 * But it was removed as our tests have shown it is not necessary 278 * anymore. 279 */ 280 281 return 0; 282 } 283 284 static int __mt9m114_buf_reg_array(struct i2c_client *client, 285 struct mt9m114_write_ctrl *ctrl, 286 const struct misensor_reg *next) 287 { 288 __be16 *data16; 289 __be32 *data32; 290 int err; 291 292 /* Insufficient buffer? Let's flush and get more free space. */ 293 if (ctrl->index + next->length >= MT9M114_MAX_WRITE_BUF_SIZE) { 294 err = __mt9m114_flush_reg_array(client, ctrl); 295 if (err) 296 return err; 297 } 298 299 switch (next->length) { 300 case MISENSOR_8BIT: 301 ctrl->buffer.data[ctrl->index] = (u8)next->val; 302 break; 303 case MISENSOR_16BIT: 304 data16 = (__be16 *)&ctrl->buffer.data[ctrl->index]; 305 *data16 = cpu_to_be16((u16)next->val); 306 break; 307 case MISENSOR_32BIT: 308 data32 = (__be32 *)&ctrl->buffer.data[ctrl->index]; 309 *data32 = cpu_to_be32(next->val); 310 break; 311 default: 312 return -EINVAL; 313 } 314 315 /* When first item is added, we need to store its starting address */ 316 if (ctrl->index == 0) 317 ctrl->buffer.addr = next->reg; 318 319 ctrl->index += next->length; 320 321 return 0; 322 } 323 324 static int 325 __mt9m114_write_reg_is_consecutive(struct i2c_client *client, 326 struct mt9m114_write_ctrl *ctrl, 327 const struct misensor_reg *next) 328 { 329 if (ctrl->index == 0) 330 return 1; 331 332 return ctrl->buffer.addr + ctrl->index == next->reg; 333 } 334 335 /* 336 * mt9m114_write_reg_array - Initializes a list of mt9m114 registers 337 * @client: i2c driver client structure 338 * @reglist: list of registers to be written 339 * @poll: completion polling requirement 340 * This function initializes a list of registers. When consecutive addresses 341 * are found in a row on the list, this function creates a buffer and sends 342 * consecutive data in a single i2c_transfer(). 343 * 344 * __mt9m114_flush_reg_array, __mt9m114_buf_reg_array() and 345 * __mt9m114_write_reg_is_consecutive() are internal functions to 346 * mt9m114_write_reg_array() and should be not used anywhere else. 347 * 348 */ 349 static int mt9m114_write_reg_array(struct i2c_client *client, 350 const struct misensor_reg *reglist, 351 int poll) 352 { 353 const struct misensor_reg *next = reglist; 354 struct mt9m114_write_ctrl ctrl; 355 int err; 356 357 if (poll == PRE_POLLING) { 358 err = mt9m114_wait_state(client, MT9M114_WAIT_STAT_TIMEOUT); 359 if (err) 360 return err; 361 } 362 363 ctrl.index = 0; 364 for (; next->length != MISENSOR_TOK_TERM; next++) { 365 switch (next->length & MISENSOR_TOK_MASK) { 366 case MISENSOR_TOK_DELAY: 367 err = __mt9m114_flush_reg_array(client, &ctrl); 368 if (err) 369 return err; 370 msleep(next->val); 371 break; 372 case MISENSOR_TOK_RMW: 373 err = __mt9m114_flush_reg_array(client, &ctrl); 374 err |= misensor_rmw_reg(client, 375 next->length & 376 ~MISENSOR_TOK_RMW, 377 next->reg, next->val, 378 next->val2); 379 if (err) { 380 dev_err(&client->dev, "%s read err. aborted\n", 381 __func__); 382 return -EINVAL; 383 } 384 break; 385 default: 386 /* 387 * If next address is not consecutive, data needs to be 388 * flushed before proceed. 389 */ 390 if (!__mt9m114_write_reg_is_consecutive(client, &ctrl, 391 next)) { 392 err = __mt9m114_flush_reg_array(client, &ctrl); 393 if (err) 394 return err; 395 } 396 err = __mt9m114_buf_reg_array(client, &ctrl, next); 397 if (err) { 398 v4l2_err(client, "%s: write error, aborted\n", 399 __func__); 400 return err; 401 } 402 break; 403 } 404 } 405 406 err = __mt9m114_flush_reg_array(client, &ctrl); 407 if (err) 408 return err; 409 410 if (poll == POST_POLLING) 411 return mt9m114_wait_state(client, MT9M114_WAIT_STAT_TIMEOUT); 412 413 return 0; 414 } 415 416 static int mt9m114_wait_state(struct i2c_client *client, int timeout) 417 { 418 int ret; 419 unsigned int val; 420 421 while (timeout-- > 0) { 422 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 0x0080, &val); 423 if (ret) 424 return ret; 425 if ((val & 0x2) == 0) 426 return 0; 427 msleep(20); 428 } 429 430 return -EINVAL; 431 } 432 433 static int mt9m114_set_suspend(struct v4l2_subdev *sd) 434 { 435 struct i2c_client *client = v4l2_get_subdevdata(sd); 436 437 return mt9m114_write_reg_array(client, 438 mt9m114_standby_reg, POST_POLLING); 439 } 440 441 static int mt9m114_init_common(struct v4l2_subdev *sd) 442 { 443 struct i2c_client *client = v4l2_get_subdevdata(sd); 444 445 return mt9m114_write_reg_array(client, mt9m114_common, PRE_POLLING); 446 } 447 448 static int power_ctrl(struct v4l2_subdev *sd, bool flag) 449 { 450 int ret; 451 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 452 453 if (!dev || !dev->platform_data) 454 return -ENODEV; 455 456 if (flag) { 457 ret = dev->platform_data->v2p8_ctrl(sd, 1); 458 if (ret == 0) { 459 ret = dev->platform_data->v1p8_ctrl(sd, 1); 460 if (ret) 461 ret = dev->platform_data->v2p8_ctrl(sd, 0); 462 } 463 } else { 464 ret = dev->platform_data->v2p8_ctrl(sd, 0); 465 ret = dev->platform_data->v1p8_ctrl(sd, 0); 466 } 467 return ret; 468 } 469 470 static int gpio_ctrl(struct v4l2_subdev *sd, bool flag) 471 { 472 int ret; 473 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 474 475 if (!dev || !dev->platform_data) 476 return -ENODEV; 477 478 /* Note: current modules wire only one GPIO signal (RESET#), 479 * but the schematic wires up two to the connector. BIOS 480 * versions have been unfortunately inconsistent with which 481 * ACPI index RESET# is on, so hit both */ 482 483 if (flag) { 484 ret = dev->platform_data->gpio0_ctrl(sd, 0); 485 ret = dev->platform_data->gpio1_ctrl(sd, 0); 486 msleep(60); 487 ret |= dev->platform_data->gpio0_ctrl(sd, 1); 488 ret |= dev->platform_data->gpio1_ctrl(sd, 1); 489 } else { 490 ret = dev->platform_data->gpio0_ctrl(sd, 0); 491 ret = dev->platform_data->gpio1_ctrl(sd, 0); 492 } 493 return ret; 494 } 495 496 static int power_up(struct v4l2_subdev *sd) 497 { 498 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 499 struct i2c_client *client = v4l2_get_subdevdata(sd); 500 int ret; 501 502 if (!dev->platform_data) { 503 dev_err(&client->dev, "no camera_sensor_platform_data"); 504 return -ENODEV; 505 } 506 507 /* power control */ 508 ret = power_ctrl(sd, 1); 509 if (ret) 510 goto fail_power; 511 512 /* flis clock control */ 513 ret = dev->platform_data->flisclk_ctrl(sd, 1); 514 if (ret) 515 goto fail_clk; 516 517 /* gpio ctrl */ 518 ret = gpio_ctrl(sd, 1); 519 if (ret) 520 dev_err(&client->dev, "gpio failed 1\n"); 521 /* 522 * according to DS, 44ms is needed between power up and first i2c 523 * commend 524 */ 525 msleep(50); 526 527 return 0; 528 529 fail_clk: 530 dev->platform_data->flisclk_ctrl(sd, 0); 531 fail_power: 532 power_ctrl(sd, 0); 533 dev_err(&client->dev, "sensor power-up failed\n"); 534 535 return ret; 536 } 537 538 static int power_down(struct v4l2_subdev *sd) 539 { 540 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 541 struct i2c_client *client = v4l2_get_subdevdata(sd); 542 int ret; 543 544 if (!dev->platform_data) { 545 dev_err(&client->dev, "no camera_sensor_platform_data"); 546 return -ENODEV; 547 } 548 549 ret = dev->platform_data->flisclk_ctrl(sd, 0); 550 if (ret) 551 dev_err(&client->dev, "flisclk failed\n"); 552 553 /* gpio ctrl */ 554 ret = gpio_ctrl(sd, 0); 555 if (ret) 556 dev_err(&client->dev, "gpio failed 1\n"); 557 558 /* power control */ 559 ret = power_ctrl(sd, 0); 560 if (ret) 561 dev_err(&client->dev, "vprog failed.\n"); 562 563 /*according to DS, 20ms is needed after power down*/ 564 msleep(20); 565 566 return ret; 567 } 568 569 static int mt9m114_s_power(struct v4l2_subdev *sd, int power) 570 { 571 if (power == 0) 572 return power_down(sd); 573 else { 574 if (power_up(sd)) 575 return -EINVAL; 576 577 return mt9m114_init_common(sd); 578 } 579 } 580 581 /* 582 * distance - calculate the distance 583 * @res: resolution 584 * @w: width 585 * @h: height 586 * 587 * Get the gap between resolution and w/h. 588 * res->width/height smaller than w/h wouldn't be considered. 589 * Returns the value of gap or -1 if fail. 590 */ 591 #define LARGEST_ALLOWED_RATIO_MISMATCH 600 592 static int distance(struct mt9m114_res_struct const *res, u32 w, u32 h) 593 { 594 unsigned int w_ratio; 595 unsigned int h_ratio; 596 int match; 597 598 if (w == 0) 599 return -1; 600 w_ratio = (res->width << 13) / w; 601 if (h == 0) 602 return -1; 603 h_ratio = (res->height << 13) / h; 604 if (h_ratio == 0) 605 return -1; 606 match = abs(((w_ratio << 13) / h_ratio) - 8192); 607 608 if ((w_ratio < 8192) || (h_ratio < 8192) || 609 (match > LARGEST_ALLOWED_RATIO_MISMATCH)) 610 return -1; 611 612 return w_ratio + h_ratio; 613 } 614 615 /* Return the nearest higher resolution index */ 616 static int nearest_resolution_index(int w, int h) 617 { 618 int i; 619 int idx = -1; 620 int dist; 621 int min_dist = INT_MAX; 622 const struct mt9m114_res_struct *tmp_res = NULL; 623 624 for (i = 0; i < ARRAY_SIZE(mt9m114_res); i++) { 625 tmp_res = &mt9m114_res[i]; 626 dist = distance(tmp_res, w, h); 627 if (dist == -1) 628 continue; 629 if (dist < min_dist) { 630 min_dist = dist; 631 idx = i; 632 } 633 } 634 635 return idx; 636 } 637 638 static int mt9m114_try_res(u32 *w, u32 *h) 639 { 640 int idx = 0; 641 642 if ((*w > MT9M114_RES_960P_SIZE_H) 643 || (*h > MT9M114_RES_960P_SIZE_V)) { 644 *w = MT9M114_RES_960P_SIZE_H; 645 *h = MT9M114_RES_960P_SIZE_V; 646 } else { 647 idx = nearest_resolution_index(*w, *h); 648 649 /* 650 * nearest_resolution_index() doesn't return smaller 651 * resolutions. If it fails, it means the requested 652 * resolution is higher than wecan support. Fallback 653 * to highest possible resolution in this case. 654 */ 655 if (idx == -1) 656 idx = ARRAY_SIZE(mt9m114_res) - 1; 657 658 *w = mt9m114_res[idx].width; 659 *h = mt9m114_res[idx].height; 660 } 661 662 return 0; 663 } 664 665 static struct mt9m114_res_struct *mt9m114_to_res(u32 w, u32 h) 666 { 667 int index; 668 669 for (index = 0; index < N_RES; index++) { 670 if ((mt9m114_res[index].width == w) && 671 (mt9m114_res[index].height == h)) 672 break; 673 } 674 675 /* No mode found */ 676 if (index >= N_RES) 677 return NULL; 678 679 return &mt9m114_res[index]; 680 } 681 682 static int mt9m114_res2size(struct v4l2_subdev *sd, int *h_size, int *v_size) 683 { 684 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 685 unsigned short hsize; 686 unsigned short vsize; 687 688 switch (dev->res) { 689 case MT9M114_RES_736P: 690 hsize = MT9M114_RES_736P_SIZE_H; 691 vsize = MT9M114_RES_736P_SIZE_V; 692 break; 693 case MT9M114_RES_864P: 694 hsize = MT9M114_RES_864P_SIZE_H; 695 vsize = MT9M114_RES_864P_SIZE_V; 696 break; 697 case MT9M114_RES_960P: 698 hsize = MT9M114_RES_960P_SIZE_H; 699 vsize = MT9M114_RES_960P_SIZE_V; 700 break; 701 default: 702 v4l2_err(sd, "%s: Resolution 0x%08x unknown\n", __func__, 703 dev->res); 704 return -EINVAL; 705 } 706 707 if (h_size) 708 *h_size = hsize; 709 if (v_size) 710 *v_size = vsize; 711 712 return 0; 713 } 714 715 static int mt9m114_get_intg_factor(struct i2c_client *client, 716 struct camera_mipi_info *info, 717 const struct mt9m114_res_struct *res) 718 { 719 struct atomisp_sensor_mode_data *buf = &info->data; 720 u32 reg_val; 721 int ret; 722 723 if (!info) 724 return -EINVAL; 725 726 ret = mt9m114_read_reg(client, MISENSOR_32BIT, 727 REG_PIXEL_CLK, ®_val); 728 if (ret) 729 return ret; 730 buf->vt_pix_clk_freq_mhz = reg_val; 731 732 /* get integration time */ 733 buf->coarse_integration_time_min = MT9M114_COARSE_INTG_TIME_MIN; 734 buf->coarse_integration_time_max_margin = 735 MT9M114_COARSE_INTG_TIME_MAX_MARGIN; 736 737 buf->fine_integration_time_min = MT9M114_FINE_INTG_TIME_MIN; 738 buf->fine_integration_time_max_margin = 739 MT9M114_FINE_INTG_TIME_MAX_MARGIN; 740 741 buf->fine_integration_time_def = MT9M114_FINE_INTG_TIME_MIN; 742 743 buf->frame_length_lines = res->lines_per_frame; 744 buf->line_length_pck = res->pixels_per_line; 745 buf->read_mode = res->bin_mode; 746 747 /* get the cropping and output resolution to ISP for this mode. */ 748 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 749 REG_H_START, ®_val); 750 if (ret) 751 return ret; 752 buf->crop_horizontal_start = reg_val; 753 754 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 755 REG_V_START, ®_val); 756 if (ret) 757 return ret; 758 buf->crop_vertical_start = reg_val; 759 760 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 761 REG_H_END, ®_val); 762 if (ret) 763 return ret; 764 buf->crop_horizontal_end = reg_val; 765 766 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 767 REG_V_END, ®_val); 768 if (ret) 769 return ret; 770 buf->crop_vertical_end = reg_val; 771 772 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 773 REG_WIDTH, ®_val); 774 if (ret) 775 return ret; 776 buf->output_width = reg_val; 777 778 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 779 REG_HEIGHT, ®_val); 780 if (ret) 781 return ret; 782 buf->output_height = reg_val; 783 784 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 785 REG_TIMING_HTS, ®_val); 786 if (ret) 787 return ret; 788 buf->line_length_pck = reg_val; 789 790 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 791 REG_TIMING_VTS, ®_val); 792 if (ret) 793 return ret; 794 buf->frame_length_lines = reg_val; 795 796 buf->binning_factor_x = res->bin_factor_x ? 797 res->bin_factor_x : 1; 798 buf->binning_factor_y = res->bin_factor_y ? 799 res->bin_factor_y : 1; 800 return 0; 801 } 802 803 static int mt9m114_get_fmt(struct v4l2_subdev *sd, 804 struct v4l2_subdev_pad_config *cfg, 805 struct v4l2_subdev_format *format) 806 { 807 struct v4l2_mbus_framefmt *fmt = &format->format; 808 int width, height; 809 int ret; 810 811 if (format->pad) 812 return -EINVAL; 813 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; 814 815 ret = mt9m114_res2size(sd, &width, &height); 816 if (ret) 817 return ret; 818 fmt->width = width; 819 fmt->height = height; 820 821 return 0; 822 } 823 824 static int mt9m114_set_fmt(struct v4l2_subdev *sd, 825 struct v4l2_subdev_pad_config *cfg, 826 struct v4l2_subdev_format *format) 827 { 828 struct v4l2_mbus_framefmt *fmt = &format->format; 829 struct i2c_client *c = v4l2_get_subdevdata(sd); 830 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 831 struct mt9m114_res_struct *res_index; 832 u32 width = fmt->width; 833 u32 height = fmt->height; 834 struct camera_mipi_info *mt9m114_info = NULL; 835 836 int ret; 837 838 if (format->pad) 839 return -EINVAL; 840 dev->streamon = 0; 841 dev->first_exp = MT9M114_DEFAULT_FIRST_EXP; 842 843 mt9m114_info = v4l2_get_subdev_hostdata(sd); 844 if (!mt9m114_info) 845 return -EINVAL; 846 847 mt9m114_try_res(&width, &height); 848 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 849 cfg->try_fmt = *fmt; 850 return 0; 851 } 852 res_index = mt9m114_to_res(width, height); 853 854 /* Sanity check */ 855 if (unlikely(!res_index)) { 856 WARN_ON(1); 857 return -EINVAL; 858 } 859 860 switch (res_index->res) { 861 case MT9M114_RES_736P: 862 ret = mt9m114_write_reg_array(c, mt9m114_736P_init, NO_POLLING); 863 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 864 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET); 865 break; 866 case MT9M114_RES_864P: 867 ret = mt9m114_write_reg_array(c, mt9m114_864P_init, NO_POLLING); 868 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 869 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET); 870 break; 871 case MT9M114_RES_960P: 872 ret = mt9m114_write_reg_array(c, mt9m114_976P_init, NO_POLLING); 873 /* set sensor read_mode to Normal */ 874 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 875 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET); 876 break; 877 default: 878 v4l2_err(sd, "set resolution: %d failed!\n", res_index->res); 879 return -EINVAL; 880 } 881 882 if (ret) 883 return -EINVAL; 884 885 ret = mt9m114_write_reg_array(c, mt9m114_chgstat_reg, POST_POLLING); 886 if (ret < 0) 887 return ret; 888 889 if (mt9m114_set_suspend(sd)) 890 return -EINVAL; 891 892 if (dev->res != res_index->res) { 893 int index; 894 895 /* Switch to different size */ 896 if (width <= 640) { 897 dev->nctx = 0x00; /* Set for context A */ 898 } else { 899 /* 900 * Context B is used for resolutions larger than 640x480 901 * Using YUV for Context B. 902 */ 903 dev->nctx = 0x01; /* set for context B */ 904 } 905 906 /* 907 * Marked current sensor res as being "used" 908 * 909 * REVISIT: We don't need to use an "used" field on each mode 910 * list entry to know which mode is selected. If this 911 * information is really necessary, how about to use a single 912 * variable on sensor dev struct? 913 */ 914 for (index = 0; index < N_RES; index++) { 915 if ((width == mt9m114_res[index].width) && 916 (height == mt9m114_res[index].height)) { 917 mt9m114_res[index].used = true; 918 continue; 919 } 920 mt9m114_res[index].used = false; 921 } 922 } 923 ret = mt9m114_get_intg_factor(c, mt9m114_info, 924 &mt9m114_res[res_index->res]); 925 if (ret) { 926 dev_err(&c->dev, "failed to get integration_factor\n"); 927 return -EINVAL; 928 } 929 /* 930 * mt9m114 - we don't poll for context switch 931 * because it does not happen with streaming disabled. 932 */ 933 dev->res = res_index->res; 934 935 fmt->width = width; 936 fmt->height = height; 937 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; 938 return 0; 939 } 940 941 /* TODO: Update to SOC functions, remove exposure and gain */ 942 static int mt9m114_g_focal(struct v4l2_subdev *sd, s32 *val) 943 { 944 *val = (MT9M114_FOCAL_LENGTH_NUM << 16) | MT9M114_FOCAL_LENGTH_DEM; 945 return 0; 946 } 947 948 static int mt9m114_g_fnumber(struct v4l2_subdev *sd, s32 *val) 949 { 950 /*const f number for mt9m114*/ 951 *val = (MT9M114_F_NUMBER_DEFAULT_NUM << 16) | MT9M114_F_NUMBER_DEM; 952 return 0; 953 } 954 955 static int mt9m114_g_fnumber_range(struct v4l2_subdev *sd, s32 *val) 956 { 957 *val = (MT9M114_F_NUMBER_DEFAULT_NUM << 24) | 958 (MT9M114_F_NUMBER_DEM << 16) | 959 (MT9M114_F_NUMBER_DEFAULT_NUM << 8) | MT9M114_F_NUMBER_DEM; 960 return 0; 961 } 962 963 /* Horizontal flip the image. */ 964 static int mt9m114_g_hflip(struct v4l2_subdev *sd, s32 *val) 965 { 966 struct i2c_client *c = v4l2_get_subdevdata(sd); 967 int ret; 968 u32 data; 969 970 ret = mt9m114_read_reg(c, MISENSOR_16BIT, 971 (u32)MISENSOR_READ_MODE, &data); 972 if (ret) 973 return ret; 974 *val = !!(data & MISENSOR_HFLIP_MASK); 975 976 return 0; 977 } 978 979 static int mt9m114_g_vflip(struct v4l2_subdev *sd, s32 *val) 980 { 981 struct i2c_client *c = v4l2_get_subdevdata(sd); 982 int ret; 983 u32 data; 984 985 ret = mt9m114_read_reg(c, MISENSOR_16BIT, 986 (u32)MISENSOR_READ_MODE, &data); 987 if (ret) 988 return ret; 989 *val = !!(data & MISENSOR_VFLIP_MASK); 990 991 return 0; 992 } 993 994 static long mt9m114_s_exposure(struct v4l2_subdev *sd, 995 struct atomisp_exposure *exposure) 996 { 997 struct i2c_client *client = v4l2_get_subdevdata(sd); 998 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 999 int ret = 0; 1000 unsigned int coarse_integration = 0; 1001 unsigned int FLines = 0; 1002 unsigned int FrameLengthLines = 0; /* ExposureTime.FrameLengthLines; */ 1003 unsigned int AnalogGain, DigitalGain; 1004 u32 AnalogGainToWrite = 0; 1005 1006 dev_dbg(&client->dev, "%s(0x%X 0x%X 0x%X)\n", __func__, 1007 exposure->integration_time[0], exposure->gain[0], 1008 exposure->gain[1]); 1009 1010 coarse_integration = exposure->integration_time[0]; 1011 /* fine_integration = ExposureTime.FineIntegrationTime; */ 1012 /* FrameLengthLines = ExposureTime.FrameLengthLines; */ 1013 FLines = mt9m114_res[dev->res].lines_per_frame; 1014 AnalogGain = exposure->gain[0]; 1015 DigitalGain = exposure->gain[1]; 1016 if (!dev->streamon) { 1017 /*Save the first exposure values while stream is off*/ 1018 dev->first_exp = coarse_integration; 1019 dev->first_gain = AnalogGain; 1020 dev->first_diggain = DigitalGain; 1021 } 1022 /* DigitalGain = 0x400 * (((u16) DigitalGain) >> 8) + 1023 ((unsigned int)(0x400 * (((u16) DigitalGain) & 0xFF)) >>8); */ 1024 1025 /* set frame length */ 1026 if (FLines < coarse_integration + 6) 1027 FLines = coarse_integration + 6; 1028 if (FLines < FrameLengthLines) 1029 FLines = FrameLengthLines; 1030 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 0x300A, FLines); 1031 if (ret) { 1032 v4l2_err(client, "%s: fail to set FLines\n", __func__); 1033 return -EINVAL; 1034 } 1035 1036 /* set coarse integration */ 1037 /* 3A provide real exposure time. 1038 should not translate to any value here. */ 1039 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 1040 REG_EXPO_COARSE, (u16)(coarse_integration)); 1041 if (ret) { 1042 v4l2_err(client, "%s: fail to set exposure time\n", __func__); 1043 return -EINVAL; 1044 } 1045 1046 /* 1047 // set analog/digital gain 1048 switch(AnalogGain) 1049 { 1050 case 0: 1051 AnalogGainToWrite = 0x0; 1052 break; 1053 case 1: 1054 AnalogGainToWrite = 0x20; 1055 break; 1056 case 2: 1057 AnalogGainToWrite = 0x60; 1058 break; 1059 case 4: 1060 AnalogGainToWrite = 0xA0; 1061 break; 1062 case 8: 1063 AnalogGainToWrite = 0xE0; 1064 break; 1065 default: 1066 AnalogGainToWrite = 0x20; 1067 break; 1068 } 1069 */ 1070 if (DigitalGain >= 16 || DigitalGain <= 1) 1071 DigitalGain = 1; 1072 /* AnalogGainToWrite = 1073 (u16)((DigitalGain << 12) | AnalogGainToWrite); */ 1074 AnalogGainToWrite = (u16)((DigitalGain << 12) | (u16)AnalogGain); 1075 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 1076 REG_GAIN, AnalogGainToWrite); 1077 if (ret) { 1078 v4l2_err(client, "%s: fail to set AnalogGainToWrite\n", 1079 __func__); 1080 return -EINVAL; 1081 } 1082 1083 return ret; 1084 } 1085 1086 static long mt9m114_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) 1087 { 1088 switch (cmd) { 1089 case ATOMISP_IOC_S_EXPOSURE: 1090 return mt9m114_s_exposure(sd, arg); 1091 default: 1092 return -EINVAL; 1093 } 1094 1095 return 0; 1096 } 1097 1098 /* This returns the exposure time being used. This should only be used 1099 for filling in EXIF data, not for actual image processing. */ 1100 static int mt9m114_g_exposure(struct v4l2_subdev *sd, s32 *value) 1101 { 1102 struct i2c_client *client = v4l2_get_subdevdata(sd); 1103 u32 coarse; 1104 int ret; 1105 1106 /* the fine integration time is currently not calculated */ 1107 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 1108 REG_EXPO_COARSE, &coarse); 1109 if (ret) 1110 return ret; 1111 1112 *value = coarse; 1113 return 0; 1114 } 1115 1116 /* 1117 * This function will return the sensor supported max exposure zone number. 1118 * the sensor which supports max exposure zone number is 1. 1119 */ 1120 static int mt9m114_g_exposure_zone_num(struct v4l2_subdev *sd, s32 *val) 1121 { 1122 *val = 1; 1123 1124 return 0; 1125 } 1126 1127 /* 1128 * set exposure metering, average/center_weighted/spot/matrix. 1129 */ 1130 static int mt9m114_s_exposure_metering(struct v4l2_subdev *sd, s32 val) 1131 { 1132 struct i2c_client *client = v4l2_get_subdevdata(sd); 1133 int ret; 1134 1135 switch (val) { 1136 case V4L2_EXPOSURE_METERING_SPOT: 1137 ret = mt9m114_write_reg_array(client, mt9m114_exp_average, 1138 NO_POLLING); 1139 if (ret) { 1140 dev_err(&client->dev, "write exp_average reg err.\n"); 1141 return ret; 1142 } 1143 break; 1144 case V4L2_EXPOSURE_METERING_CENTER_WEIGHTED: 1145 default: 1146 ret = mt9m114_write_reg_array(client, mt9m114_exp_center, 1147 NO_POLLING); 1148 if (ret) { 1149 dev_err(&client->dev, "write exp_default reg err"); 1150 return ret; 1151 } 1152 } 1153 1154 return 0; 1155 } 1156 1157 /* 1158 * This function is for touch exposure feature. 1159 */ 1160 static int mt9m114_s_exposure_selection(struct v4l2_subdev *sd, 1161 struct v4l2_subdev_pad_config *cfg, 1162 struct v4l2_subdev_selection *sel) 1163 { 1164 struct i2c_client *client = v4l2_get_subdevdata(sd); 1165 struct misensor_reg exp_reg; 1166 int width, height; 1167 int grid_width, grid_height; 1168 int grid_left, grid_top, grid_right, grid_bottom; 1169 int win_left, win_top, win_right, win_bottom; 1170 int i, j; 1171 int ret; 1172 1173 if (sel->which != V4L2_SUBDEV_FORMAT_TRY && 1174 sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) 1175 return -EINVAL; 1176 1177 grid_left = sel->r.left; 1178 grid_top = sel->r.top; 1179 grid_right = sel->r.left + sel->r.width - 1; 1180 grid_bottom = sel->r.top + sel->r.height - 1; 1181 1182 ret = mt9m114_res2size(sd, &width, &height); 1183 if (ret) 1184 return ret; 1185 1186 grid_width = width / 5; 1187 grid_height = height / 5; 1188 1189 if (grid_width && grid_height) { 1190 win_left = grid_left / grid_width; 1191 win_top = grid_top / grid_height; 1192 win_right = grid_right / grid_width; 1193 win_bottom = grid_bottom / grid_height; 1194 } else { 1195 dev_err(&client->dev, "Incorrect exp grid.\n"); 1196 return -EINVAL; 1197 } 1198 1199 win_left = clamp_t(int, win_left, 0, 4); 1200 win_top = clamp_t(int, win_top, 0, 4); 1201 win_right = clamp_t(int, win_right, 0, 4); 1202 win_bottom = clamp_t(int, win_bottom, 0, 4); 1203 1204 ret = mt9m114_write_reg_array(client, mt9m114_exp_average, NO_POLLING); 1205 if (ret) { 1206 dev_err(&client->dev, "write exp_average reg err.\n"); 1207 return ret; 1208 } 1209 1210 for (i = win_top; i <= win_bottom; i++) { 1211 for (j = win_left; j <= win_right; j++) { 1212 exp_reg = mt9m114_exp_win[i][j]; 1213 1214 ret = mt9m114_write_reg(client, exp_reg.length, 1215 exp_reg.reg, exp_reg.val); 1216 if (ret) { 1217 dev_err(&client->dev, "write exp_reg err.\n"); 1218 return ret; 1219 } 1220 } 1221 } 1222 1223 return 0; 1224 } 1225 1226 static int mt9m114_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val) 1227 { 1228 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1229 1230 *val = mt9m114_res[dev->res].bin_factor_x; 1231 1232 return 0; 1233 } 1234 1235 static int mt9m114_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val) 1236 { 1237 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1238 1239 *val = mt9m114_res[dev->res].bin_factor_y; 1240 1241 return 0; 1242 } 1243 1244 static int mt9m114_s_ev(struct v4l2_subdev *sd, s32 val) 1245 { 1246 struct i2c_client *c = v4l2_get_subdevdata(sd); 1247 s32 luma = 0x37; 1248 int err; 1249 1250 /* EV value only support -2 to 2 1251 * 0: 0x37, 1:0x47, 2:0x57, -1:0x27, -2:0x17 1252 */ 1253 if (val < -2 || val > 2) 1254 return -EINVAL; 1255 luma += 0x10 * val; 1256 dev_dbg(&c->dev, "%s val:%d luma:0x%x\n", __func__, val, luma); 1257 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC87A); 1258 if (err) { 1259 dev_err(&c->dev, "%s logic addr access error\n", __func__); 1260 return err; 1261 } 1262 err = mt9m114_write_reg(c, MISENSOR_8BIT, 0xC87A, (u32)luma); 1263 if (err) { 1264 dev_err(&c->dev, "%s write target_average_luma failed\n", 1265 __func__); 1266 return err; 1267 } 1268 udelay(10); 1269 1270 return 0; 1271 } 1272 1273 static int mt9m114_g_ev(struct v4l2_subdev *sd, s32 *val) 1274 { 1275 struct i2c_client *c = v4l2_get_subdevdata(sd); 1276 int err; 1277 u32 luma; 1278 1279 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC87A); 1280 if (err) { 1281 dev_err(&c->dev, "%s logic addr access error\n", __func__); 1282 return err; 1283 } 1284 err = mt9m114_read_reg(c, MISENSOR_8BIT, 0xC87A, &luma); 1285 if (err) { 1286 dev_err(&c->dev, "%s read target_average_luma failed\n", 1287 __func__); 1288 return err; 1289 } 1290 luma -= 0x17; 1291 luma /= 0x10; 1292 *val = (s32)luma - 2; 1293 dev_dbg(&c->dev, "%s val:%d\n", __func__, *val); 1294 1295 return 0; 1296 } 1297 1298 /* Fake interface 1299 * mt9m114 now can not support 3a_lock 1300 */ 1301 static int mt9m114_s_3a_lock(struct v4l2_subdev *sd, s32 val) 1302 { 1303 aaalock = val; 1304 return 0; 1305 } 1306 1307 static int mt9m114_g_3a_lock(struct v4l2_subdev *sd, s32 *val) 1308 { 1309 if (aaalock) 1310 return V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE 1311 | V4L2_LOCK_FOCUS; 1312 return 0; 1313 } 1314 1315 static int mt9m114_s_ctrl(struct v4l2_ctrl *ctrl) 1316 { 1317 struct mt9m114_device *dev = 1318 container_of(ctrl->handler, struct mt9m114_device, ctrl_handler); 1319 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); 1320 int ret = 0; 1321 1322 switch (ctrl->id) { 1323 case V4L2_CID_VFLIP: 1324 dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n", 1325 __func__, ctrl->val); 1326 ret = mt9m114_t_vflip(&dev->sd, ctrl->val); 1327 break; 1328 case V4L2_CID_HFLIP: 1329 dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n", 1330 __func__, ctrl->val); 1331 ret = mt9m114_t_hflip(&dev->sd, ctrl->val); 1332 break; 1333 case V4L2_CID_EXPOSURE_METERING: 1334 ret = mt9m114_s_exposure_metering(&dev->sd, ctrl->val); 1335 break; 1336 case V4L2_CID_EXPOSURE: 1337 ret = mt9m114_s_ev(&dev->sd, ctrl->val); 1338 break; 1339 case V4L2_CID_3A_LOCK: 1340 ret = mt9m114_s_3a_lock(&dev->sd, ctrl->val); 1341 break; 1342 default: 1343 ret = -EINVAL; 1344 } 1345 return ret; 1346 } 1347 1348 static int mt9m114_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 1349 { 1350 struct mt9m114_device *dev = 1351 container_of(ctrl->handler, struct mt9m114_device, ctrl_handler); 1352 int ret = 0; 1353 1354 switch (ctrl->id) { 1355 case V4L2_CID_VFLIP: 1356 ret = mt9m114_g_vflip(&dev->sd, &ctrl->val); 1357 break; 1358 case V4L2_CID_HFLIP: 1359 ret = mt9m114_g_hflip(&dev->sd, &ctrl->val); 1360 break; 1361 case V4L2_CID_FOCAL_ABSOLUTE: 1362 ret = mt9m114_g_focal(&dev->sd, &ctrl->val); 1363 break; 1364 case V4L2_CID_FNUMBER_ABSOLUTE: 1365 ret = mt9m114_g_fnumber(&dev->sd, &ctrl->val); 1366 break; 1367 case V4L2_CID_FNUMBER_RANGE: 1368 ret = mt9m114_g_fnumber_range(&dev->sd, &ctrl->val); 1369 break; 1370 case V4L2_CID_EXPOSURE_ABSOLUTE: 1371 ret = mt9m114_g_exposure(&dev->sd, &ctrl->val); 1372 break; 1373 case V4L2_CID_EXPOSURE_ZONE_NUM: 1374 ret = mt9m114_g_exposure_zone_num(&dev->sd, &ctrl->val); 1375 break; 1376 case V4L2_CID_BIN_FACTOR_HORZ: 1377 ret = mt9m114_g_bin_factor_x(&dev->sd, &ctrl->val); 1378 break; 1379 case V4L2_CID_BIN_FACTOR_VERT: 1380 ret = mt9m114_g_bin_factor_y(&dev->sd, &ctrl->val); 1381 break; 1382 case V4L2_CID_EXPOSURE: 1383 ret = mt9m114_g_ev(&dev->sd, &ctrl->val); 1384 break; 1385 case V4L2_CID_3A_LOCK: 1386 ret = mt9m114_g_3a_lock(&dev->sd, &ctrl->val); 1387 break; 1388 default: 1389 ret = -EINVAL; 1390 } 1391 1392 return ret; 1393 } 1394 1395 static const struct v4l2_ctrl_ops ctrl_ops = { 1396 .s_ctrl = mt9m114_s_ctrl, 1397 .g_volatile_ctrl = mt9m114_g_volatile_ctrl 1398 }; 1399 1400 static struct v4l2_ctrl_config mt9m114_controls[] = { 1401 { 1402 .ops = &ctrl_ops, 1403 .id = V4L2_CID_VFLIP, 1404 .name = "Image v-Flip", 1405 .type = V4L2_CTRL_TYPE_INTEGER, 1406 .min = 0, 1407 .max = 1, 1408 .step = 1, 1409 .def = 0, 1410 }, 1411 { 1412 .ops = &ctrl_ops, 1413 .id = V4L2_CID_HFLIP, 1414 .name = "Image h-Flip", 1415 .type = V4L2_CTRL_TYPE_INTEGER, 1416 .min = 0, 1417 .max = 1, 1418 .step = 1, 1419 .def = 0, 1420 }, 1421 { 1422 .ops = &ctrl_ops, 1423 .id = V4L2_CID_FOCAL_ABSOLUTE, 1424 .name = "focal length", 1425 .type = V4L2_CTRL_TYPE_INTEGER, 1426 .min = MT9M114_FOCAL_LENGTH_DEFAULT, 1427 .max = MT9M114_FOCAL_LENGTH_DEFAULT, 1428 .step = 1, 1429 .def = MT9M114_FOCAL_LENGTH_DEFAULT, 1430 .flags = 0, 1431 }, 1432 { 1433 .ops = &ctrl_ops, 1434 .id = V4L2_CID_FNUMBER_ABSOLUTE, 1435 .name = "f-number", 1436 .type = V4L2_CTRL_TYPE_INTEGER, 1437 .min = MT9M114_F_NUMBER_DEFAULT, 1438 .max = MT9M114_F_NUMBER_DEFAULT, 1439 .step = 1, 1440 .def = MT9M114_F_NUMBER_DEFAULT, 1441 .flags = 0, 1442 }, 1443 { 1444 .ops = &ctrl_ops, 1445 .id = V4L2_CID_FNUMBER_RANGE, 1446 .name = "f-number range", 1447 .type = V4L2_CTRL_TYPE_INTEGER, 1448 .min = MT9M114_F_NUMBER_RANGE, 1449 .max = MT9M114_F_NUMBER_RANGE, 1450 .step = 1, 1451 .def = MT9M114_F_NUMBER_RANGE, 1452 .flags = 0, 1453 }, 1454 { 1455 .ops = &ctrl_ops, 1456 .id = V4L2_CID_EXPOSURE_ABSOLUTE, 1457 .name = "exposure", 1458 .type = V4L2_CTRL_TYPE_INTEGER, 1459 .min = 0, 1460 .max = 0xffff, 1461 .step = 1, 1462 .def = 0, 1463 .flags = 0, 1464 }, 1465 { 1466 .ops = &ctrl_ops, 1467 .id = V4L2_CID_EXPOSURE_ZONE_NUM, 1468 .name = "one-time exposure zone number", 1469 .type = V4L2_CTRL_TYPE_INTEGER, 1470 .min = 0, 1471 .max = 0xffff, 1472 .step = 1, 1473 .def = 0, 1474 .flags = 0, 1475 }, 1476 { 1477 .ops = &ctrl_ops, 1478 .id = V4L2_CID_EXPOSURE_METERING, 1479 .name = "metering", 1480 .type = V4L2_CTRL_TYPE_MENU, 1481 .min = 0, 1482 .max = 3, 1483 .step = 0, 1484 .def = 1, 1485 .flags = 0, 1486 }, 1487 { 1488 .ops = &ctrl_ops, 1489 .id = V4L2_CID_BIN_FACTOR_HORZ, 1490 .name = "horizontal binning factor", 1491 .type = V4L2_CTRL_TYPE_INTEGER, 1492 .min = 0, 1493 .max = MT9M114_BIN_FACTOR_MAX, 1494 .step = 1, 1495 .def = 0, 1496 .flags = 0, 1497 }, 1498 { 1499 .ops = &ctrl_ops, 1500 .id = V4L2_CID_BIN_FACTOR_VERT, 1501 .name = "vertical binning factor", 1502 .type = V4L2_CTRL_TYPE_INTEGER, 1503 .min = 0, 1504 .max = MT9M114_BIN_FACTOR_MAX, 1505 .step = 1, 1506 .def = 0, 1507 .flags = 0, 1508 }, 1509 { 1510 .ops = &ctrl_ops, 1511 .id = V4L2_CID_EXPOSURE, 1512 .name = "exposure biasx", 1513 .type = V4L2_CTRL_TYPE_INTEGER, 1514 .min = -2, 1515 .max = 2, 1516 .step = 1, 1517 .def = 0, 1518 .flags = 0, 1519 }, 1520 { 1521 .ops = &ctrl_ops, 1522 .id = V4L2_CID_3A_LOCK, 1523 .name = "3a lock", 1524 .type = V4L2_CTRL_TYPE_BITMASK, 1525 .min = 0, 1526 .max = V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE | V4L2_LOCK_FOCUS, 1527 .step = 1, 1528 .def = 0, 1529 .flags = 0, 1530 }, 1531 }; 1532 1533 static int mt9m114_detect(struct mt9m114_device *dev, struct i2c_client *client) 1534 { 1535 struct i2c_adapter *adapter = client->adapter; 1536 u32 retvalue; 1537 1538 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { 1539 dev_err(&client->dev, "%s: i2c error", __func__); 1540 return -ENODEV; 1541 } 1542 mt9m114_read_reg(client, MISENSOR_16BIT, (u32)MT9M114_PID, &retvalue); 1543 dev->real_model_id = retvalue; 1544 1545 if (retvalue != MT9M114_MOD_ID) { 1546 dev_err(&client->dev, "%s: failed: client->addr = %x\n", 1547 __func__, client->addr); 1548 return -ENODEV; 1549 } 1550 1551 return 0; 1552 } 1553 1554 static int 1555 mt9m114_s_config(struct v4l2_subdev *sd, int irq, void *platform_data) 1556 { 1557 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1558 struct i2c_client *client = v4l2_get_subdevdata(sd); 1559 int ret; 1560 1561 if (!platform_data) 1562 return -ENODEV; 1563 1564 dev->platform_data = 1565 (struct camera_sensor_platform_data *)platform_data; 1566 1567 ret = power_up(sd); 1568 if (ret) { 1569 v4l2_err(client, "mt9m114 power-up err"); 1570 return ret; 1571 } 1572 1573 /* config & detect sensor */ 1574 ret = mt9m114_detect(dev, client); 1575 if (ret) { 1576 v4l2_err(client, "mt9m114_detect err s_config.\n"); 1577 goto fail_detect; 1578 } 1579 1580 ret = dev->platform_data->csi_cfg(sd, 1); 1581 if (ret) 1582 goto fail_csi_cfg; 1583 1584 ret = mt9m114_set_suspend(sd); 1585 if (ret) { 1586 v4l2_err(client, "mt9m114 suspend err"); 1587 return ret; 1588 } 1589 1590 ret = power_down(sd); 1591 if (ret) { 1592 v4l2_err(client, "mt9m114 power down err"); 1593 return ret; 1594 } 1595 1596 return ret; 1597 1598 fail_csi_cfg: 1599 dev->platform_data->csi_cfg(sd, 0); 1600 fail_detect: 1601 power_down(sd); 1602 dev_err(&client->dev, "sensor power-gating failed\n"); 1603 return ret; 1604 } 1605 1606 /* Horizontal flip the image. */ 1607 static int mt9m114_t_hflip(struct v4l2_subdev *sd, int value) 1608 { 1609 struct i2c_client *c = v4l2_get_subdevdata(sd); 1610 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1611 int err; 1612 /* set for direct mode */ 1613 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC850); 1614 if (value) { 1615 /* enable H flip ctx A */ 1616 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x01, 0x01); 1617 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x01, 0x01); 1618 /* ctx B */ 1619 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x01, 0x01); 1620 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x01, 0x01); 1621 1622 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1623 MISENSOR_HFLIP_MASK, MISENSOR_FLIP_EN); 1624 1625 dev->bpat = MT9M114_BPAT_GRGRBGBG; 1626 } else { 1627 /* disable H flip ctx A */ 1628 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x01, 0x00); 1629 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x01, 0x00); 1630 /* ctx B */ 1631 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x01, 0x00); 1632 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x01, 0x00); 1633 1634 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1635 MISENSOR_HFLIP_MASK, MISENSOR_FLIP_DIS); 1636 1637 dev->bpat = MT9M114_BPAT_BGBGGRGR; 1638 } 1639 1640 err += mt9m114_write_reg(c, MISENSOR_8BIT, 0x8404, 0x06); 1641 udelay(10); 1642 1643 return !!err; 1644 } 1645 1646 /* Vertically flip the image */ 1647 static int mt9m114_t_vflip(struct v4l2_subdev *sd, int value) 1648 { 1649 struct i2c_client *c = v4l2_get_subdevdata(sd); 1650 int err; 1651 /* set for direct mode */ 1652 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC850); 1653 if (value >= 1) { 1654 /* enable H flip - ctx A */ 1655 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x02, 0x01); 1656 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x02, 0x01); 1657 /* ctx B */ 1658 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x02, 0x01); 1659 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x02, 0x01); 1660 1661 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1662 MISENSOR_VFLIP_MASK, MISENSOR_FLIP_EN); 1663 } else { 1664 /* disable H flip - ctx A */ 1665 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x02, 0x00); 1666 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x02, 0x00); 1667 /* ctx B */ 1668 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x02, 0x00); 1669 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x02, 0x00); 1670 1671 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1672 MISENSOR_VFLIP_MASK, MISENSOR_FLIP_DIS); 1673 } 1674 1675 err += mt9m114_write_reg(c, MISENSOR_8BIT, 0x8404, 0x06); 1676 udelay(10); 1677 1678 return !!err; 1679 } 1680 1681 static int mt9m114_g_frame_interval(struct v4l2_subdev *sd, 1682 struct v4l2_subdev_frame_interval *interval) 1683 { 1684 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1685 1686 interval->interval.numerator = 1; 1687 interval->interval.denominator = mt9m114_res[dev->res].fps; 1688 1689 return 0; 1690 } 1691 1692 static int mt9m114_s_stream(struct v4l2_subdev *sd, int enable) 1693 { 1694 int ret; 1695 struct i2c_client *c = v4l2_get_subdevdata(sd); 1696 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1697 struct atomisp_exposure exposure; 1698 1699 if (enable) { 1700 ret = mt9m114_write_reg_array(c, mt9m114_chgstat_reg, 1701 POST_POLLING); 1702 if (ret < 0) 1703 return ret; 1704 1705 if (dev->first_exp > MT9M114_MAX_FIRST_EXP) { 1706 exposure.integration_time[0] = dev->first_exp; 1707 exposure.gain[0] = dev->first_gain; 1708 exposure.gain[1] = dev->first_diggain; 1709 mt9m114_s_exposure(sd, &exposure); 1710 } 1711 dev->streamon = 1; 1712 1713 } else { 1714 dev->streamon = 0; 1715 ret = mt9m114_set_suspend(sd); 1716 } 1717 1718 return ret; 1719 } 1720 1721 static int mt9m114_enum_mbus_code(struct v4l2_subdev *sd, 1722 struct v4l2_subdev_pad_config *cfg, 1723 struct v4l2_subdev_mbus_code_enum *code) 1724 { 1725 if (code->index) 1726 return -EINVAL; 1727 code->code = MEDIA_BUS_FMT_SGRBG10_1X10; 1728 1729 return 0; 1730 } 1731 1732 static int mt9m114_enum_frame_size(struct v4l2_subdev *sd, 1733 struct v4l2_subdev_pad_config *cfg, 1734 struct v4l2_subdev_frame_size_enum *fse) 1735 { 1736 unsigned int index = fse->index; 1737 1738 if (index >= N_RES) 1739 return -EINVAL; 1740 1741 fse->min_width = mt9m114_res[index].width; 1742 fse->min_height = mt9m114_res[index].height; 1743 fse->max_width = mt9m114_res[index].width; 1744 fse->max_height = mt9m114_res[index].height; 1745 1746 return 0; 1747 } 1748 1749 static int mt9m114_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) 1750 { 1751 int index; 1752 struct mt9m114_device *snr = to_mt9m114_sensor(sd); 1753 1754 if (!frames) 1755 return -EINVAL; 1756 1757 for (index = 0; index < N_RES; index++) { 1758 if (mt9m114_res[index].res == snr->res) 1759 break; 1760 } 1761 1762 if (index >= N_RES) 1763 return -EINVAL; 1764 1765 *frames = mt9m114_res[index].skip_frames; 1766 1767 return 0; 1768 } 1769 1770 static const struct v4l2_subdev_video_ops mt9m114_video_ops = { 1771 .s_stream = mt9m114_s_stream, 1772 .g_frame_interval = mt9m114_g_frame_interval, 1773 }; 1774 1775 static const struct v4l2_subdev_sensor_ops mt9m114_sensor_ops = { 1776 .g_skip_frames = mt9m114_g_skip_frames, 1777 }; 1778 1779 static const struct v4l2_subdev_core_ops mt9m114_core_ops = { 1780 .s_power = mt9m114_s_power, 1781 .ioctl = mt9m114_ioctl, 1782 }; 1783 1784 /* REVISIT: Do we need pad operations? */ 1785 static const struct v4l2_subdev_pad_ops mt9m114_pad_ops = { 1786 .enum_mbus_code = mt9m114_enum_mbus_code, 1787 .enum_frame_size = mt9m114_enum_frame_size, 1788 .get_fmt = mt9m114_get_fmt, 1789 .set_fmt = mt9m114_set_fmt, 1790 .set_selection = mt9m114_s_exposure_selection, 1791 }; 1792 1793 static const struct v4l2_subdev_ops mt9m114_ops = { 1794 .core = &mt9m114_core_ops, 1795 .video = &mt9m114_video_ops, 1796 .pad = &mt9m114_pad_ops, 1797 .sensor = &mt9m114_sensor_ops, 1798 }; 1799 1800 static int mt9m114_remove(struct i2c_client *client) 1801 { 1802 struct mt9m114_device *dev; 1803 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1804 1805 dev = container_of(sd, struct mt9m114_device, sd); 1806 dev->platform_data->csi_cfg(sd, 0); 1807 v4l2_device_unregister_subdev(sd); 1808 media_entity_cleanup(&dev->sd.entity); 1809 v4l2_ctrl_handler_free(&dev->ctrl_handler); 1810 kfree(dev); 1811 return 0; 1812 } 1813 1814 static int mt9m114_probe(struct i2c_client *client) 1815 { 1816 struct mt9m114_device *dev; 1817 int ret = 0; 1818 unsigned int i; 1819 void *pdata; 1820 1821 /* Setup sensor configuration structure */ 1822 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 1823 if (!dev) 1824 return -ENOMEM; 1825 1826 v4l2_i2c_subdev_init(&dev->sd, client, &mt9m114_ops); 1827 pdata = gmin_camera_platform_data(&dev->sd, 1828 ATOMISP_INPUT_FORMAT_RAW_10, 1829 atomisp_bayer_order_grbg); 1830 if (pdata) 1831 ret = mt9m114_s_config(&dev->sd, client->irq, pdata); 1832 if (!pdata || ret) { 1833 v4l2_device_unregister_subdev(&dev->sd); 1834 kfree(dev); 1835 return ret; 1836 } 1837 1838 ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA); 1839 if (ret) { 1840 v4l2_device_unregister_subdev(&dev->sd); 1841 kfree(dev); 1842 /* Coverity CID 298095 - return on error */ 1843 return ret; 1844 } 1845 1846 /*TODO add format code here*/ 1847 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1848 dev->pad.flags = MEDIA_PAD_FL_SOURCE; 1849 dev->format.code = MEDIA_BUS_FMT_SGRBG10_1X10; 1850 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1851 1852 ret = 1853 v4l2_ctrl_handler_init(&dev->ctrl_handler, 1854 ARRAY_SIZE(mt9m114_controls)); 1855 if (ret) { 1856 mt9m114_remove(client); 1857 return ret; 1858 } 1859 1860 for (i = 0; i < ARRAY_SIZE(mt9m114_controls); i++) 1861 v4l2_ctrl_new_custom(&dev->ctrl_handler, &mt9m114_controls[i], 1862 NULL); 1863 1864 if (dev->ctrl_handler.error) { 1865 mt9m114_remove(client); 1866 return dev->ctrl_handler.error; 1867 } 1868 1869 /* Use same lock for controls as for everything else. */ 1870 dev->ctrl_handler.lock = &dev->input_lock; 1871 dev->sd.ctrl_handler = &dev->ctrl_handler; 1872 1873 /* REVISIT: Do we need media controller? */ 1874 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); 1875 if (ret) { 1876 mt9m114_remove(client); 1877 return ret; 1878 } 1879 return 0; 1880 } 1881 1882 static const struct acpi_device_id mt9m114_acpi_match[] = { 1883 { "INT33F0" }, 1884 { "CRMT1040" }, 1885 {}, 1886 }; 1887 MODULE_DEVICE_TABLE(acpi, mt9m114_acpi_match); 1888 1889 static struct i2c_driver mt9m114_driver = { 1890 .driver = { 1891 .name = "mt9m114", 1892 .acpi_match_table = mt9m114_acpi_match, 1893 }, 1894 .probe_new = mt9m114_probe, 1895 .remove = mt9m114_remove, 1896 }; 1897 module_i2c_driver(mt9m114_driver); 1898 1899 MODULE_AUTHOR("Shuguang Gong <Shuguang.gong@intel.com>"); 1900 MODULE_LICENSE("GPL"); 1901