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 */ 44static int debug; 45static int aaalock; 46module_param(debug, int, 0644); 47MODULE_PARM_DESC(debug, "Debug level (0-1)"); 48 49static int mt9m114_t_vflip(struct v4l2_subdev *sd, int value); 50static int mt9m114_t_hflip(struct v4l2_subdev *sd, int value); 51static int mt9m114_wait_state(struct i2c_client *client, int timeout); 52 53static int 54mt9m114_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 105static int 106mt9m114_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 127again: 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 */ 185static int 186misensor_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 243static 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 255again: 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 284static 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 324static 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 */ 349static 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 416static 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 433static 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 441static 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 448static 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 470static 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 /* 479 * Note: current modules wire only one GPIO signal (RESET#), 480 * but the schematic wires up two to the connector. BIOS 481 * versions have been unfortunately inconsistent with which 482 * ACPI index RESET# is on, so hit both 483 */ 484 485 if (flag) { 486 ret = dev->platform_data->gpio0_ctrl(sd, 0); 487 ret = dev->platform_data->gpio1_ctrl(sd, 0); 488 msleep(60); 489 ret |= dev->platform_data->gpio0_ctrl(sd, 1); 490 ret |= dev->platform_data->gpio1_ctrl(sd, 1); 491 } else { 492 ret = dev->platform_data->gpio0_ctrl(sd, 0); 493 ret = dev->platform_data->gpio1_ctrl(sd, 0); 494 } 495 return ret; 496} 497 498static int power_up(struct v4l2_subdev *sd) 499{ 500 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 501 struct i2c_client *client = v4l2_get_subdevdata(sd); 502 int ret; 503 504 if (!dev->platform_data) { 505 dev_err(&client->dev, "no camera_sensor_platform_data"); 506 return -ENODEV; 507 } 508 509 /* power control */ 510 ret = power_ctrl(sd, 1); 511 if (ret) 512 goto fail_power; 513 514 /* flis clock control */ 515 ret = dev->platform_data->flisclk_ctrl(sd, 1); 516 if (ret) 517 goto fail_clk; 518 519 /* gpio ctrl */ 520 ret = gpio_ctrl(sd, 1); 521 if (ret) 522 dev_err(&client->dev, "gpio failed 1\n"); 523 /* 524 * according to DS, 44ms is needed between power up and first i2c 525 * commend 526 */ 527 msleep(50); 528 529 return 0; 530 531fail_clk: 532 dev->platform_data->flisclk_ctrl(sd, 0); 533fail_power: 534 power_ctrl(sd, 0); 535 dev_err(&client->dev, "sensor power-up failed\n"); 536 537 return ret; 538} 539 540static int power_down(struct v4l2_subdev *sd) 541{ 542 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 543 struct i2c_client *client = v4l2_get_subdevdata(sd); 544 int ret; 545 546 if (!dev->platform_data) { 547 dev_err(&client->dev, "no camera_sensor_platform_data"); 548 return -ENODEV; 549 } 550 551 ret = dev->platform_data->flisclk_ctrl(sd, 0); 552 if (ret) 553 dev_err(&client->dev, "flisclk failed\n"); 554 555 /* gpio ctrl */ 556 ret = gpio_ctrl(sd, 0); 557 if (ret) 558 dev_err(&client->dev, "gpio failed 1\n"); 559 560 /* power control */ 561 ret = power_ctrl(sd, 0); 562 if (ret) 563 dev_err(&client->dev, "vprog failed.\n"); 564 565 /* according to DS, 20ms is needed after power down */ 566 msleep(20); 567 568 return ret; 569} 570 571static int mt9m114_s_power(struct v4l2_subdev *sd, int power) 572{ 573 if (power == 0) 574 return power_down(sd); 575 576 if (power_up(sd)) 577 return -EINVAL; 578 579 return mt9m114_init_common(sd); 580} 581 582static int mt9m114_res2size(struct v4l2_subdev *sd, int *h_size, int *v_size) 583{ 584 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 585 unsigned short hsize; 586 unsigned short vsize; 587 588 switch (dev->res) { 589 case MT9M114_RES_736P: 590 hsize = MT9M114_RES_736P_SIZE_H; 591 vsize = MT9M114_RES_736P_SIZE_V; 592 break; 593 case MT9M114_RES_864P: 594 hsize = MT9M114_RES_864P_SIZE_H; 595 vsize = MT9M114_RES_864P_SIZE_V; 596 break; 597 case MT9M114_RES_960P: 598 hsize = MT9M114_RES_960P_SIZE_H; 599 vsize = MT9M114_RES_960P_SIZE_V; 600 break; 601 default: 602 v4l2_err(sd, "%s: Resolution 0x%08x unknown\n", __func__, 603 dev->res); 604 return -EINVAL; 605 } 606 607 if (h_size) 608 *h_size = hsize; 609 if (v_size) 610 *v_size = vsize; 611 612 return 0; 613} 614 615static int mt9m114_get_fmt(struct v4l2_subdev *sd, 616 struct v4l2_subdev_state *sd_state, 617 struct v4l2_subdev_format *format) 618{ 619 struct v4l2_mbus_framefmt *fmt = &format->format; 620 int width, height; 621 int ret; 622 623 if (format->pad) 624 return -EINVAL; 625 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; 626 627 ret = mt9m114_res2size(sd, &width, &height); 628 if (ret) 629 return ret; 630 fmt->width = width; 631 fmt->height = height; 632 633 return 0; 634} 635 636static int mt9m114_set_fmt(struct v4l2_subdev *sd, 637 struct v4l2_subdev_state *sd_state, 638 struct v4l2_subdev_format *format) 639{ 640 struct v4l2_mbus_framefmt *fmt = &format->format; 641 struct i2c_client *c = v4l2_get_subdevdata(sd); 642 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 643 struct mt9m114_res_struct *res; 644 u32 width = fmt->width; 645 u32 height = fmt->height; 646 struct camera_mipi_info *mt9m114_info = NULL; 647 648 int ret; 649 650 if (format->pad) 651 return -EINVAL; 652 dev->streamon = 0; 653 dev->first_exp = MT9M114_DEFAULT_FIRST_EXP; 654 655 mt9m114_info = v4l2_get_subdev_hostdata(sd); 656 if (!mt9m114_info) 657 return -EINVAL; 658 659 res = v4l2_find_nearest_size(mt9m114_res, 660 ARRAY_SIZE(mt9m114_res), width, 661 height, fmt->width, fmt->height); 662 if (!res) 663 res = &mt9m114_res[N_RES - 1]; 664 665 fmt->width = res->width; 666 fmt->height = res->height; 667 668 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 669 *v4l2_subdev_state_get_format(sd_state, 0) = *fmt; 670 return 0; 671 } 672 673 switch (res->res) { 674 case MT9M114_RES_736P: 675 ret = mt9m114_write_reg_array(c, mt9m114_736P_init, NO_POLLING); 676 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 677 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET); 678 break; 679 case MT9M114_RES_864P: 680 ret = mt9m114_write_reg_array(c, mt9m114_864P_init, NO_POLLING); 681 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 682 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET); 683 break; 684 case MT9M114_RES_960P: 685 ret = mt9m114_write_reg_array(c, mt9m114_976P_init, NO_POLLING); 686 /* set sensor read_mode to Normal */ 687 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 688 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET); 689 break; 690 default: 691 v4l2_err(sd, "set resolution: %d failed!\n", res->res); 692 return -EINVAL; 693 } 694 695 if (ret) 696 return -EINVAL; 697 698 ret = mt9m114_write_reg_array(c, mt9m114_chgstat_reg, POST_POLLING); 699 if (ret < 0) 700 return ret; 701 702 if (mt9m114_set_suspend(sd)) 703 return -EINVAL; 704 705 if (dev->res != res->res) { 706 int index; 707 708 /* Switch to different size */ 709 if (width <= 640) { 710 dev->nctx = 0x00; /* Set for context A */ 711 } else { 712 /* 713 * Context B is used for resolutions larger than 640x480 714 * Using YUV for Context B. 715 */ 716 dev->nctx = 0x01; /* set for context B */ 717 } 718 719 /* 720 * Marked current sensor res as being "used" 721 * 722 * REVISIT: We don't need to use an "used" field on each mode 723 * list entry to know which mode is selected. If this 724 * information is really necessary, how about to use a single 725 * variable on sensor dev struct? 726 */ 727 for (index = 0; index < N_RES; index++) { 728 if ((width == mt9m114_res[index].width) && 729 (height == mt9m114_res[index].height)) { 730 mt9m114_res[index].used = true; 731 continue; 732 } 733 mt9m114_res[index].used = false; 734 } 735 } 736 /* 737 * mt9m114 - we don't poll for context switch 738 * because it does not happen with streaming disabled. 739 */ 740 dev->res = res->res; 741 742 fmt->width = width; 743 fmt->height = height; 744 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; 745 return 0; 746} 747 748/* Horizontal flip the image. */ 749static int mt9m114_g_hflip(struct v4l2_subdev *sd, s32 *val) 750{ 751 struct i2c_client *c = v4l2_get_subdevdata(sd); 752 int ret; 753 u32 data; 754 755 ret = mt9m114_read_reg(c, MISENSOR_16BIT, 756 (u32)MISENSOR_READ_MODE, &data); 757 if (ret) 758 return ret; 759 *val = !!(data & MISENSOR_HFLIP_MASK); 760 761 return 0; 762} 763 764static int mt9m114_g_vflip(struct v4l2_subdev *sd, s32 *val) 765{ 766 struct i2c_client *c = v4l2_get_subdevdata(sd); 767 int ret; 768 u32 data; 769 770 ret = mt9m114_read_reg(c, MISENSOR_16BIT, 771 (u32)MISENSOR_READ_MODE, &data); 772 if (ret) 773 return ret; 774 *val = !!(data & MISENSOR_VFLIP_MASK); 775 776 return 0; 777} 778 779static long mt9m114_s_exposure(struct v4l2_subdev *sd, 780 struct atomisp_exposure *exposure) 781{ 782 struct i2c_client *client = v4l2_get_subdevdata(sd); 783 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 784 int ret = 0; 785 unsigned int coarse_integration = 0; 786 unsigned int f_lines = 0; 787 unsigned int frame_len_lines = 0; /* ExposureTime.FrameLengthLines; */ 788 unsigned int analog_gain, digital_gain; 789 u32 analog_gain_to_write = 0; 790 791 dev_dbg(&client->dev, "%s(0x%X 0x%X 0x%X)\n", __func__, 792 exposure->integration_time[0], exposure->gain[0], 793 exposure->gain[1]); 794 795 coarse_integration = exposure->integration_time[0]; 796 /* 797 * fine_integration = ExposureTime.FineIntegrationTime; 798 * frame_len_lines = ExposureTime.FrameLengthLines; 799 */ 800 f_lines = mt9m114_res[dev->res].lines_per_frame; 801 analog_gain = exposure->gain[0]; 802 digital_gain = exposure->gain[1]; 803 if (!dev->streamon) { 804 /*Save the first exposure values while stream is off*/ 805 dev->first_exp = coarse_integration; 806 dev->first_gain = analog_gain; 807 dev->first_diggain = digital_gain; 808 } 809 /* digital_gain = 0x400 * (((u16) digital_gain) >> 8) + */ 810 /* ((unsigned int)(0x400 * (((u16) digital_gain) & 0xFF)) >>8); */ 811 812 /* set frame length */ 813 if (f_lines < coarse_integration + 6) 814 f_lines = coarse_integration + 6; 815 if (f_lines < frame_len_lines) 816 f_lines = frame_len_lines; 817 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 0x300A, f_lines); 818 if (ret) { 819 v4l2_err(client, "%s: fail to set f_lines\n", __func__); 820 return -EINVAL; 821 } 822 823 /* set coarse integration */ 824 /* 825 * 3A provide real exposure time. 826 * should not translate to any value here. 827 */ 828 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 829 REG_EXPO_COARSE, (u16)(coarse_integration)); 830 if (ret) { 831 v4l2_err(client, "%s: fail to set exposure time\n", __func__); 832 return -EINVAL; 833 } 834 835 /* 836 * set analog/digital gain 837 switch(analog_gain) 838 { 839 case 0: 840 analog_gain_to_write = 0x0; 841 break; 842 case 1: 843 analog_gain_to_write = 0x20; 844 break; 845 case 2: 846 analog_gain_to_write = 0x60; 847 break; 848 case 4: 849 analog_gain_to_write = 0xA0; 850 break; 851 case 8: 852 analog_gain_to_write = 0xE0; 853 break; 854 default: 855 analog_gain_to_write = 0x20; 856 break; 857 } 858 */ 859 if (digital_gain >= 16 || digital_gain <= 1) 860 digital_gain = 1; 861 /* 862 * analog_gain_to_write = (u16)((digital_gain << 12) 863 * | analog_gain_to_write); 864 */ 865 analog_gain_to_write = (u16)((digital_gain << 12) | (u16)analog_gain); 866 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 867 REG_GAIN, analog_gain_to_write); 868 if (ret) { 869 v4l2_err(client, "%s: fail to set analog_gain_to_write\n", 870 __func__); 871 return -EINVAL; 872 } 873 874 return ret; 875} 876 877static long mt9m114_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) 878{ 879 switch (cmd) { 880 case ATOMISP_IOC_S_EXPOSURE: 881 return mt9m114_s_exposure(sd, arg); 882 default: 883 return -EINVAL; 884 } 885 886 return 0; 887} 888 889/* 890 * This returns the exposure time being used. This should only be used 891 * for filling in EXIF data, not for actual image processing. 892 */ 893static int mt9m114_g_exposure(struct v4l2_subdev *sd, s32 *value) 894{ 895 struct i2c_client *client = v4l2_get_subdevdata(sd); 896 u32 coarse; 897 int ret; 898 899 /* the fine integration time is currently not calculated */ 900 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 901 REG_EXPO_COARSE, &coarse); 902 if (ret) 903 return ret; 904 905 *value = coarse; 906 return 0; 907} 908 909/* 910 * This function will return the sensor supported max exposure zone number. 911 * the sensor which supports max exposure zone number is 1. 912 */ 913static int mt9m114_g_exposure_zone_num(struct v4l2_subdev *sd, s32 *val) 914{ 915 *val = 1; 916 917 return 0; 918} 919 920/* 921 * set exposure metering, average/center_weighted/spot/matrix. 922 */ 923static int mt9m114_s_exposure_metering(struct v4l2_subdev *sd, s32 val) 924{ 925 struct i2c_client *client = v4l2_get_subdevdata(sd); 926 int ret; 927 928 switch (val) { 929 case V4L2_EXPOSURE_METERING_SPOT: 930 ret = mt9m114_write_reg_array(client, mt9m114_exp_average, 931 NO_POLLING); 932 if (ret) { 933 dev_err(&client->dev, "write exp_average reg err.\n"); 934 return ret; 935 } 936 break; 937 case V4L2_EXPOSURE_METERING_CENTER_WEIGHTED: 938 default: 939 ret = mt9m114_write_reg_array(client, mt9m114_exp_center, 940 NO_POLLING); 941 if (ret) { 942 dev_err(&client->dev, "write exp_default reg err"); 943 return ret; 944 } 945 } 946 947 return 0; 948} 949 950/* 951 * This function is for touch exposure feature. 952 */ 953static int mt9m114_s_exposure_selection(struct v4l2_subdev *sd, 954 struct v4l2_subdev_state *sd_state, 955 struct v4l2_subdev_selection *sel) 956{ 957 struct i2c_client *client = v4l2_get_subdevdata(sd); 958 struct misensor_reg exp_reg; 959 int width, height; 960 int grid_width, grid_height; 961 int grid_left, grid_top, grid_right, grid_bottom; 962 int win_left, win_top, win_right, win_bottom; 963 int i, j; 964 int ret; 965 966 if (sel->which != V4L2_SUBDEV_FORMAT_TRY && 967 sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) 968 return -EINVAL; 969 970 grid_left = sel->r.left; 971 grid_top = sel->r.top; 972 grid_right = sel->r.left + sel->r.width - 1; 973 grid_bottom = sel->r.top + sel->r.height - 1; 974 975 ret = mt9m114_res2size(sd, &width, &height); 976 if (ret) 977 return ret; 978 979 grid_width = width / 5; 980 grid_height = height / 5; 981 982 if (grid_width && grid_height) { 983 win_left = grid_left / grid_width; 984 win_top = grid_top / grid_height; 985 win_right = grid_right / grid_width; 986 win_bottom = grid_bottom / grid_height; 987 } else { 988 dev_err(&client->dev, "Incorrect exp grid.\n"); 989 return -EINVAL; 990 } 991 992 win_left = clamp_t(int, win_left, 0, 4); 993 win_top = clamp_t(int, win_top, 0, 4); 994 win_right = clamp_t(int, win_right, 0, 4); 995 win_bottom = clamp_t(int, win_bottom, 0, 4); 996 997 ret = mt9m114_write_reg_array(client, mt9m114_exp_average, NO_POLLING); 998 if (ret) { 999 dev_err(&client->dev, "write exp_average reg err.\n"); 1000 return ret; 1001 } 1002 1003 for (i = win_top; i <= win_bottom; i++) { 1004 for (j = win_left; j <= win_right; j++) { 1005 exp_reg = mt9m114_exp_win[i][j]; 1006 1007 ret = mt9m114_write_reg(client, exp_reg.length, 1008 exp_reg.reg, exp_reg.val); 1009 if (ret) { 1010 dev_err(&client->dev, "write exp_reg err.\n"); 1011 return ret; 1012 } 1013 } 1014 } 1015 1016 return 0; 1017} 1018 1019static int mt9m114_s_ev(struct v4l2_subdev *sd, s32 val) 1020{ 1021 struct i2c_client *c = v4l2_get_subdevdata(sd); 1022 s32 luma = 0x37; 1023 int err; 1024 1025 /* 1026 * EV value only support -2 to 2 1027 * 0: 0x37, 1:0x47, 2:0x57, -1:0x27, -2:0x17 1028 */ 1029 if (val < -2 || val > 2) 1030 return -EINVAL; 1031 luma += 0x10 * val; 1032 dev_dbg(&c->dev, "%s val:%d luma:0x%x\n", __func__, val, luma); 1033 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC87A); 1034 if (err) { 1035 dev_err(&c->dev, "%s logic addr access error\n", __func__); 1036 return err; 1037 } 1038 err = mt9m114_write_reg(c, MISENSOR_8BIT, 0xC87A, (u32)luma); 1039 if (err) { 1040 dev_err(&c->dev, "%s write target_average_luma failed\n", 1041 __func__); 1042 return err; 1043 } 1044 udelay(10); 1045 1046 return 0; 1047} 1048 1049static int mt9m114_g_ev(struct v4l2_subdev *sd, s32 *val) 1050{ 1051 struct i2c_client *c = v4l2_get_subdevdata(sd); 1052 int err; 1053 u32 luma; 1054 1055 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC87A); 1056 if (err) { 1057 dev_err(&c->dev, "%s logic addr access error\n", __func__); 1058 return err; 1059 } 1060 err = mt9m114_read_reg(c, MISENSOR_8BIT, 0xC87A, &luma); 1061 if (err) { 1062 dev_err(&c->dev, "%s read target_average_luma failed\n", 1063 __func__); 1064 return err; 1065 } 1066 luma -= 0x17; 1067 luma /= 0x10; 1068 *val = (s32)luma - 2; 1069 dev_dbg(&c->dev, "%s val:%d\n", __func__, *val); 1070 1071 return 0; 1072} 1073 1074/* 1075 * Fake interface 1076 * mt9m114 now can not support 3a_lock 1077 */ 1078static int mt9m114_s_3a_lock(struct v4l2_subdev *sd, s32 val) 1079{ 1080 aaalock = val; 1081 return 0; 1082} 1083 1084static int mt9m114_g_3a_lock(struct v4l2_subdev *sd, s32 *val) 1085{ 1086 if (aaalock) 1087 return V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE 1088 | V4L2_LOCK_FOCUS; 1089 return 0; 1090} 1091 1092static int mt9m114_s_ctrl(struct v4l2_ctrl *ctrl) 1093{ 1094 struct mt9m114_device *dev = 1095 container_of(ctrl->handler, struct mt9m114_device, ctrl_handler); 1096 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); 1097 int ret = 0; 1098 1099 switch (ctrl->id) { 1100 case V4L2_CID_VFLIP: 1101 dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n", 1102 __func__, ctrl->val); 1103 ret = mt9m114_t_vflip(&dev->sd, ctrl->val); 1104 break; 1105 case V4L2_CID_HFLIP: 1106 dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n", 1107 __func__, ctrl->val); 1108 ret = mt9m114_t_hflip(&dev->sd, ctrl->val); 1109 break; 1110 case V4L2_CID_EXPOSURE_METERING: 1111 ret = mt9m114_s_exposure_metering(&dev->sd, ctrl->val); 1112 break; 1113 case V4L2_CID_EXPOSURE: 1114 ret = mt9m114_s_ev(&dev->sd, ctrl->val); 1115 break; 1116 case V4L2_CID_3A_LOCK: 1117 ret = mt9m114_s_3a_lock(&dev->sd, ctrl->val); 1118 break; 1119 default: 1120 ret = -EINVAL; 1121 } 1122 return ret; 1123} 1124 1125static int mt9m114_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 1126{ 1127 struct mt9m114_device *dev = 1128 container_of(ctrl->handler, struct mt9m114_device, ctrl_handler); 1129 int ret = 0; 1130 1131 switch (ctrl->id) { 1132 case V4L2_CID_VFLIP: 1133 ret = mt9m114_g_vflip(&dev->sd, &ctrl->val); 1134 break; 1135 case V4L2_CID_HFLIP: 1136 ret = mt9m114_g_hflip(&dev->sd, &ctrl->val); 1137 break; 1138 case V4L2_CID_EXPOSURE_ABSOLUTE: 1139 ret = mt9m114_g_exposure(&dev->sd, &ctrl->val); 1140 break; 1141 case V4L2_CID_EXPOSURE_ZONE_NUM: 1142 ret = mt9m114_g_exposure_zone_num(&dev->sd, &ctrl->val); 1143 break; 1144 case V4L2_CID_EXPOSURE: 1145 ret = mt9m114_g_ev(&dev->sd, &ctrl->val); 1146 break; 1147 case V4L2_CID_3A_LOCK: 1148 ret = mt9m114_g_3a_lock(&dev->sd, &ctrl->val); 1149 break; 1150 default: 1151 ret = -EINVAL; 1152 } 1153 1154 return ret; 1155} 1156 1157static const struct v4l2_ctrl_ops ctrl_ops = { 1158 .s_ctrl = mt9m114_s_ctrl, 1159 .g_volatile_ctrl = mt9m114_g_volatile_ctrl 1160}; 1161 1162static struct v4l2_ctrl_config mt9m114_controls[] = { 1163 { 1164 .ops = &ctrl_ops, 1165 .id = V4L2_CID_VFLIP, 1166 .name = "Image v-Flip", 1167 .type = V4L2_CTRL_TYPE_INTEGER, 1168 .min = 0, 1169 .max = 1, 1170 .step = 1, 1171 .def = 0, 1172 }, 1173 { 1174 .ops = &ctrl_ops, 1175 .id = V4L2_CID_HFLIP, 1176 .name = "Image h-Flip", 1177 .type = V4L2_CTRL_TYPE_INTEGER, 1178 .min = 0, 1179 .max = 1, 1180 .step = 1, 1181 .def = 0, 1182 }, 1183 { 1184 .ops = &ctrl_ops, 1185 .id = V4L2_CID_EXPOSURE_ABSOLUTE, 1186 .name = "exposure", 1187 .type = V4L2_CTRL_TYPE_INTEGER, 1188 .min = 0, 1189 .max = 0xffff, 1190 .step = 1, 1191 .def = 0, 1192 .flags = 0, 1193 }, 1194 { 1195 .ops = &ctrl_ops, 1196 .id = V4L2_CID_EXPOSURE_ZONE_NUM, 1197 .name = "one-time exposure zone number", 1198 .type = V4L2_CTRL_TYPE_INTEGER, 1199 .min = 0, 1200 .max = 0xffff, 1201 .step = 1, 1202 .def = 0, 1203 .flags = 0, 1204 }, 1205 { 1206 .ops = &ctrl_ops, 1207 .id = V4L2_CID_EXPOSURE_METERING, 1208 .name = "metering", 1209 .type = V4L2_CTRL_TYPE_MENU, 1210 .min = 0, 1211 .max = 3, 1212 .step = 0, 1213 .def = 1, 1214 .flags = 0, 1215 }, 1216 { 1217 .ops = &ctrl_ops, 1218 .id = V4L2_CID_EXPOSURE, 1219 .name = "exposure biasx", 1220 .type = V4L2_CTRL_TYPE_INTEGER, 1221 .min = -2, 1222 .max = 2, 1223 .step = 1, 1224 .def = 0, 1225 .flags = 0, 1226 }, 1227 { 1228 .ops = &ctrl_ops, 1229 .id = V4L2_CID_3A_LOCK, 1230 .name = "3a lock", 1231 .type = V4L2_CTRL_TYPE_BITMASK, 1232 .min = 0, 1233 .max = V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE | V4L2_LOCK_FOCUS, 1234 .step = 1, 1235 .def = 0, 1236 .flags = 0, 1237 }, 1238}; 1239 1240static int mt9m114_detect(struct mt9m114_device *dev, struct i2c_client *client) 1241{ 1242 struct i2c_adapter *adapter = client->adapter; 1243 u32 model; 1244 int ret; 1245 1246 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { 1247 dev_err(&client->dev, "%s: i2c error", __func__); 1248 return -ENODEV; 1249 } 1250 ret = mt9m114_read_reg(client, MISENSOR_16BIT, MT9M114_PID, &model); 1251 if (ret) 1252 return ret; 1253 dev->real_model_id = model; 1254 1255 if (model != MT9M114_MOD_ID) { 1256 dev_err(&client->dev, "%s: failed: client->addr = %x\n", 1257 __func__, client->addr); 1258 return -ENODEV; 1259 } 1260 1261 return 0; 1262} 1263 1264static int 1265mt9m114_s_config(struct v4l2_subdev *sd, int irq, void *platform_data) 1266{ 1267 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1268 struct i2c_client *client = v4l2_get_subdevdata(sd); 1269 int ret; 1270 1271 if (!platform_data) 1272 return -ENODEV; 1273 1274 dev->platform_data = 1275 (struct camera_sensor_platform_data *)platform_data; 1276 1277 ret = power_up(sd); 1278 if (ret) { 1279 v4l2_err(client, "mt9m114 power-up err"); 1280 return ret; 1281 } 1282 1283 /* config & detect sensor */ 1284 ret = mt9m114_detect(dev, client); 1285 if (ret) { 1286 v4l2_err(client, "mt9m114_detect err s_config.\n"); 1287 goto fail_detect; 1288 } 1289 1290 ret = dev->platform_data->csi_cfg(sd, 1); 1291 if (ret) 1292 goto fail_csi_cfg; 1293 1294 ret = mt9m114_set_suspend(sd); 1295 if (ret) { 1296 v4l2_err(client, "mt9m114 suspend err"); 1297 return ret; 1298 } 1299 1300 ret = power_down(sd); 1301 if (ret) { 1302 v4l2_err(client, "mt9m114 power down err"); 1303 return ret; 1304 } 1305 1306 return ret; 1307 1308fail_csi_cfg: 1309 dev->platform_data->csi_cfg(sd, 0); 1310fail_detect: 1311 power_down(sd); 1312 dev_err(&client->dev, "sensor power-gating failed\n"); 1313 return ret; 1314} 1315 1316/* Horizontal flip the image. */ 1317static int mt9m114_t_hflip(struct v4l2_subdev *sd, int value) 1318{ 1319 struct i2c_client *c = v4l2_get_subdevdata(sd); 1320 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1321 int err; 1322 /* set for direct mode */ 1323 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC850); 1324 if (value) { 1325 /* enable H flip ctx A */ 1326 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x01, 0x01); 1327 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x01, 0x01); 1328 /* ctx B */ 1329 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x01, 0x01); 1330 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x01, 0x01); 1331 1332 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1333 MISENSOR_HFLIP_MASK, MISENSOR_FLIP_EN); 1334 1335 dev->bpat = MT9M114_BPAT_GRGRBGBG; 1336 } else { 1337 /* disable H flip ctx A */ 1338 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x01, 0x00); 1339 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x01, 0x00); 1340 /* ctx B */ 1341 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x01, 0x00); 1342 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x01, 0x00); 1343 1344 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1345 MISENSOR_HFLIP_MASK, MISENSOR_FLIP_DIS); 1346 1347 dev->bpat = MT9M114_BPAT_BGBGGRGR; 1348 } 1349 1350 err += mt9m114_write_reg(c, MISENSOR_8BIT, 0x8404, 0x06); 1351 udelay(10); 1352 1353 return !!err; 1354} 1355 1356/* Vertically flip the image */ 1357static int mt9m114_t_vflip(struct v4l2_subdev *sd, int value) 1358{ 1359 struct i2c_client *c = v4l2_get_subdevdata(sd); 1360 int err; 1361 /* set for direct mode */ 1362 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC850); 1363 if (value >= 1) { 1364 /* enable H flip - ctx A */ 1365 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x02, 0x01); 1366 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x02, 0x01); 1367 /* ctx B */ 1368 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x02, 0x01); 1369 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x02, 0x01); 1370 1371 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1372 MISENSOR_VFLIP_MASK, MISENSOR_FLIP_EN); 1373 } else { 1374 /* disable H flip - ctx A */ 1375 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x02, 0x00); 1376 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x02, 0x00); 1377 /* ctx B */ 1378 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x02, 0x00); 1379 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x02, 0x00); 1380 1381 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1382 MISENSOR_VFLIP_MASK, MISENSOR_FLIP_DIS); 1383 } 1384 1385 err += mt9m114_write_reg(c, MISENSOR_8BIT, 0x8404, 0x06); 1386 udelay(10); 1387 1388 return !!err; 1389} 1390 1391static int mt9m114_get_frame_interval(struct v4l2_subdev *sd, 1392 struct v4l2_subdev_state *sd_state, 1393 struct v4l2_subdev_frame_interval *interval) 1394{ 1395 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1396 1397 /* 1398 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2 1399 * subdev active state API. 1400 */ 1401 if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE) 1402 return -EINVAL; 1403 1404 interval->interval.numerator = 1; 1405 interval->interval.denominator = mt9m114_res[dev->res].fps; 1406 1407 return 0; 1408} 1409 1410static int mt9m114_s_stream(struct v4l2_subdev *sd, int enable) 1411{ 1412 int ret; 1413 struct i2c_client *c = v4l2_get_subdevdata(sd); 1414 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1415 struct atomisp_exposure exposure; 1416 1417 if (enable) { 1418 ret = mt9m114_write_reg_array(c, mt9m114_chgstat_reg, 1419 POST_POLLING); 1420 if (ret < 0) 1421 return ret; 1422 1423 if (dev->first_exp > MT9M114_MAX_FIRST_EXP) { 1424 exposure.integration_time[0] = dev->first_exp; 1425 exposure.gain[0] = dev->first_gain; 1426 exposure.gain[1] = dev->first_diggain; 1427 mt9m114_s_exposure(sd, &exposure); 1428 } 1429 dev->streamon = 1; 1430 1431 } else { 1432 dev->streamon = 0; 1433 ret = mt9m114_set_suspend(sd); 1434 } 1435 1436 return ret; 1437} 1438 1439static int mt9m114_enum_mbus_code(struct v4l2_subdev *sd, 1440 struct v4l2_subdev_state *sd_state, 1441 struct v4l2_subdev_mbus_code_enum *code) 1442{ 1443 if (code->index) 1444 return -EINVAL; 1445 code->code = MEDIA_BUS_FMT_SGRBG10_1X10; 1446 1447 return 0; 1448} 1449 1450static int mt9m114_enum_frame_size(struct v4l2_subdev *sd, 1451 struct v4l2_subdev_state *sd_state, 1452 struct v4l2_subdev_frame_size_enum *fse) 1453{ 1454 unsigned int index = fse->index; 1455 1456 if (index >= N_RES) 1457 return -EINVAL; 1458 1459 fse->min_width = mt9m114_res[index].width; 1460 fse->min_height = mt9m114_res[index].height; 1461 fse->max_width = mt9m114_res[index].width; 1462 fse->max_height = mt9m114_res[index].height; 1463 1464 return 0; 1465} 1466 1467static int mt9m114_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) 1468{ 1469 int index; 1470 struct mt9m114_device *snr = to_mt9m114_sensor(sd); 1471 1472 if (!frames) 1473 return -EINVAL; 1474 1475 for (index = 0; index < N_RES; index++) { 1476 if (mt9m114_res[index].res == snr->res) 1477 break; 1478 } 1479 1480 if (index >= N_RES) 1481 return -EINVAL; 1482 1483 *frames = mt9m114_res[index].skip_frames; 1484 1485 return 0; 1486} 1487 1488static const struct v4l2_subdev_video_ops mt9m114_video_ops = { 1489 .s_stream = mt9m114_s_stream, 1490}; 1491 1492static const struct v4l2_subdev_sensor_ops mt9m114_sensor_ops = { 1493 .g_skip_frames = mt9m114_g_skip_frames, 1494}; 1495 1496static const struct v4l2_subdev_core_ops mt9m114_core_ops = { 1497 .s_power = mt9m114_s_power, 1498 .ioctl = mt9m114_ioctl, 1499}; 1500 1501/* REVISIT: Do we need pad operations? */ 1502static const struct v4l2_subdev_pad_ops mt9m114_pad_ops = { 1503 .enum_mbus_code = mt9m114_enum_mbus_code, 1504 .enum_frame_size = mt9m114_enum_frame_size, 1505 .get_fmt = mt9m114_get_fmt, 1506 .set_fmt = mt9m114_set_fmt, 1507 .set_selection = mt9m114_s_exposure_selection, 1508 .get_frame_interval = mt9m114_get_frame_interval, 1509}; 1510 1511static const struct v4l2_subdev_ops mt9m114_ops = { 1512 .core = &mt9m114_core_ops, 1513 .video = &mt9m114_video_ops, 1514 .pad = &mt9m114_pad_ops, 1515 .sensor = &mt9m114_sensor_ops, 1516}; 1517 1518static void mt9m114_remove(struct i2c_client *client) 1519{ 1520 struct mt9m114_device *dev; 1521 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1522 1523 dev = container_of(sd, struct mt9m114_device, sd); 1524 dev->platform_data->csi_cfg(sd, 0); 1525 v4l2_device_unregister_subdev(sd); 1526 media_entity_cleanup(&dev->sd.entity); 1527 v4l2_ctrl_handler_free(&dev->ctrl_handler); 1528 kfree(dev); 1529} 1530 1531static int mt9m114_probe(struct i2c_client *client) 1532{ 1533 struct mt9m114_device *dev; 1534 int ret = 0; 1535 unsigned int i; 1536 void *pdata; 1537 1538 /* Setup sensor configuration structure */ 1539 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 1540 if (!dev) 1541 return -ENOMEM; 1542 1543 v4l2_i2c_subdev_init(&dev->sd, client, &mt9m114_ops); 1544 pdata = gmin_camera_platform_data(&dev->sd, 1545 ATOMISP_INPUT_FORMAT_RAW_10, 1546 atomisp_bayer_order_grbg); 1547 if (pdata) 1548 ret = mt9m114_s_config(&dev->sd, client->irq, pdata); 1549 if (!pdata || ret) { 1550 v4l2_device_unregister_subdev(&dev->sd); 1551 kfree(dev); 1552 return ret; 1553 } 1554 1555 ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA); 1556 if (ret) { 1557 v4l2_device_unregister_subdev(&dev->sd); 1558 kfree(dev); 1559 /* Coverity CID 298095 - return on error */ 1560 return ret; 1561 } 1562 1563 /* TODO add format code here */ 1564 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1565 dev->pad.flags = MEDIA_PAD_FL_SOURCE; 1566 dev->format.code = MEDIA_BUS_FMT_SGRBG10_1X10; 1567 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1568 1569 ret = 1570 v4l2_ctrl_handler_init(&dev->ctrl_handler, 1571 ARRAY_SIZE(mt9m114_controls)); 1572 if (ret) { 1573 mt9m114_remove(client); 1574 return ret; 1575 } 1576 1577 for (i = 0; i < ARRAY_SIZE(mt9m114_controls); i++) 1578 v4l2_ctrl_new_custom(&dev->ctrl_handler, &mt9m114_controls[i], 1579 NULL); 1580 1581 if (dev->ctrl_handler.error) { 1582 mt9m114_remove(client); 1583 return dev->ctrl_handler.error; 1584 } 1585 1586 /* Use same lock for controls as for everything else. */ 1587 dev->ctrl_handler.lock = &dev->input_lock; 1588 dev->sd.ctrl_handler = &dev->ctrl_handler; 1589 1590 /* REVISIT: Do we need media controller? */ 1591 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); 1592 if (ret) { 1593 mt9m114_remove(client); 1594 return ret; 1595 } 1596 return 0; 1597} 1598 1599static const struct acpi_device_id mt9m114_acpi_match[] = { 1600 { "INT33F0" }, 1601 { "CRMT1040" }, 1602 {}, 1603}; 1604MODULE_DEVICE_TABLE(acpi, mt9m114_acpi_match); 1605 1606static struct i2c_driver mt9m114_driver = { 1607 .driver = { 1608 .name = "mt9m114", 1609 .acpi_match_table = mt9m114_acpi_match, 1610 }, 1611 .probe = mt9m114_probe, 1612 .remove = mt9m114_remove, 1613}; 1614module_i2c_driver(mt9m114_driver); 1615 1616MODULE_AUTHOR("Shuguang Gong <Shuguang.gong@intel.com>"); 1617MODULE_LICENSE("GPL"); 1618