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 /* 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 } 497 498 static 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; 530 531 fail_clk: 532 dev->platform_data->flisclk_ctrl(sd, 0); 533 fail_power: 534 power_ctrl(sd, 0); 535 dev_err(&client->dev, "sensor power-up failed\n"); 536 537 return ret; 538 } 539 540 static 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 } 570 571 static 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 } 581 582 static 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 } 614 615 static int mt9m114_get_intg_factor(struct i2c_client *client, 616 struct camera_mipi_info *info, 617 const struct mt9m114_res_struct *res) 618 { 619 struct atomisp_sensor_mode_data *buf; 620 u32 reg_val; 621 int ret; 622 623 if (!info) 624 return -EINVAL; 625 626 buf = &info->data; 627 628 ret = mt9m114_read_reg(client, MISENSOR_32BIT, 629 REG_PIXEL_CLK, ®_val); 630 if (ret) 631 return ret; 632 buf->vt_pix_clk_freq_mhz = reg_val; 633 634 /* get integration time */ 635 buf->coarse_integration_time_min = MT9M114_COARSE_INTG_TIME_MIN; 636 buf->coarse_integration_time_max_margin = 637 MT9M114_COARSE_INTG_TIME_MAX_MARGIN; 638 639 buf->fine_integration_time_min = MT9M114_FINE_INTG_TIME_MIN; 640 buf->fine_integration_time_max_margin = 641 MT9M114_FINE_INTG_TIME_MAX_MARGIN; 642 643 buf->fine_integration_time_def = MT9M114_FINE_INTG_TIME_MIN; 644 645 buf->frame_length_lines = res->lines_per_frame; 646 buf->line_length_pck = res->pixels_per_line; 647 buf->read_mode = res->bin_mode; 648 649 /* get the cropping and output resolution to ISP for this mode. */ 650 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 651 REG_H_START, ®_val); 652 if (ret) 653 return ret; 654 buf->crop_horizontal_start = reg_val; 655 656 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 657 REG_V_START, ®_val); 658 if (ret) 659 return ret; 660 buf->crop_vertical_start = reg_val; 661 662 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 663 REG_H_END, ®_val); 664 if (ret) 665 return ret; 666 buf->crop_horizontal_end = reg_val; 667 668 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 669 REG_V_END, ®_val); 670 if (ret) 671 return ret; 672 buf->crop_vertical_end = reg_val; 673 674 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 675 REG_WIDTH, ®_val); 676 if (ret) 677 return ret; 678 buf->output_width = reg_val; 679 680 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 681 REG_HEIGHT, ®_val); 682 if (ret) 683 return ret; 684 buf->output_height = reg_val; 685 686 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 687 REG_TIMING_HTS, ®_val); 688 if (ret) 689 return ret; 690 buf->line_length_pck = reg_val; 691 692 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 693 REG_TIMING_VTS, ®_val); 694 if (ret) 695 return ret; 696 buf->frame_length_lines = reg_val; 697 698 buf->binning_factor_x = res->bin_factor_x ? 699 res->bin_factor_x : 1; 700 buf->binning_factor_y = res->bin_factor_y ? 701 res->bin_factor_y : 1; 702 return 0; 703 } 704 705 static int mt9m114_get_fmt(struct v4l2_subdev *sd, 706 struct v4l2_subdev_state *sd_state, 707 struct v4l2_subdev_format *format) 708 { 709 struct v4l2_mbus_framefmt *fmt = &format->format; 710 int width, height; 711 int ret; 712 713 if (format->pad) 714 return -EINVAL; 715 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; 716 717 ret = mt9m114_res2size(sd, &width, &height); 718 if (ret) 719 return ret; 720 fmt->width = width; 721 fmt->height = height; 722 723 return 0; 724 } 725 726 static int mt9m114_set_fmt(struct v4l2_subdev *sd, 727 struct v4l2_subdev_state *sd_state, 728 struct v4l2_subdev_format *format) 729 { 730 struct v4l2_mbus_framefmt *fmt = &format->format; 731 struct i2c_client *c = v4l2_get_subdevdata(sd); 732 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 733 struct mt9m114_res_struct *res; 734 u32 width = fmt->width; 735 u32 height = fmt->height; 736 struct camera_mipi_info *mt9m114_info = NULL; 737 738 int ret; 739 740 if (format->pad) 741 return -EINVAL; 742 dev->streamon = 0; 743 dev->first_exp = MT9M114_DEFAULT_FIRST_EXP; 744 745 mt9m114_info = v4l2_get_subdev_hostdata(sd); 746 if (!mt9m114_info) 747 return -EINVAL; 748 749 res = v4l2_find_nearest_size(mt9m114_res, 750 ARRAY_SIZE(mt9m114_res), width, 751 height, fmt->width, fmt->height); 752 if (!res) 753 res = &mt9m114_res[N_RES - 1]; 754 755 fmt->width = res->width; 756 fmt->height = res->height; 757 758 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 759 sd_state->pads->try_fmt = *fmt; 760 return 0; 761 } 762 763 switch (res->res) { 764 case MT9M114_RES_736P: 765 ret = mt9m114_write_reg_array(c, mt9m114_736P_init, NO_POLLING); 766 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 767 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET); 768 break; 769 case MT9M114_RES_864P: 770 ret = mt9m114_write_reg_array(c, mt9m114_864P_init, NO_POLLING); 771 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 772 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET); 773 break; 774 case MT9M114_RES_960P: 775 ret = mt9m114_write_reg_array(c, mt9m114_976P_init, NO_POLLING); 776 /* set sensor read_mode to Normal */ 777 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 778 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET); 779 break; 780 default: 781 v4l2_err(sd, "set resolution: %d failed!\n", res->res); 782 return -EINVAL; 783 } 784 785 if (ret) 786 return -EINVAL; 787 788 ret = mt9m114_write_reg_array(c, mt9m114_chgstat_reg, POST_POLLING); 789 if (ret < 0) 790 return ret; 791 792 if (mt9m114_set_suspend(sd)) 793 return -EINVAL; 794 795 if (dev->res != res->res) { 796 int index; 797 798 /* Switch to different size */ 799 if (width <= 640) { 800 dev->nctx = 0x00; /* Set for context A */ 801 } else { 802 /* 803 * Context B is used for resolutions larger than 640x480 804 * Using YUV for Context B. 805 */ 806 dev->nctx = 0x01; /* set for context B */ 807 } 808 809 /* 810 * Marked current sensor res as being "used" 811 * 812 * REVISIT: We don't need to use an "used" field on each mode 813 * list entry to know which mode is selected. If this 814 * information is really necessary, how about to use a single 815 * variable on sensor dev struct? 816 */ 817 for (index = 0; index < N_RES; index++) { 818 if ((width == mt9m114_res[index].width) && 819 (height == mt9m114_res[index].height)) { 820 mt9m114_res[index].used = true; 821 continue; 822 } 823 mt9m114_res[index].used = false; 824 } 825 } 826 ret = mt9m114_get_intg_factor(c, mt9m114_info, 827 &mt9m114_res[res->res]); 828 if (ret) { 829 dev_err(&c->dev, "failed to get integration_factor\n"); 830 return -EINVAL; 831 } 832 /* 833 * mt9m114 - we don't poll for context switch 834 * because it does not happen with streaming disabled. 835 */ 836 dev->res = res->res; 837 838 fmt->width = width; 839 fmt->height = height; 840 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; 841 return 0; 842 } 843 844 /* TODO: Update to SOC functions, remove exposure and gain */ 845 static int mt9m114_g_focal(struct v4l2_subdev *sd, s32 *val) 846 { 847 *val = (MT9M114_FOCAL_LENGTH_NUM << 16) | MT9M114_FOCAL_LENGTH_DEM; 848 return 0; 849 } 850 851 static int mt9m114_g_fnumber(struct v4l2_subdev *sd, s32 *val) 852 { 853 /* const f number for mt9m114 */ 854 *val = (MT9M114_F_NUMBER_DEFAULT_NUM << 16) | MT9M114_F_NUMBER_DEM; 855 return 0; 856 } 857 858 static int mt9m114_g_fnumber_range(struct v4l2_subdev *sd, s32 *val) 859 { 860 *val = (MT9M114_F_NUMBER_DEFAULT_NUM << 24) | 861 (MT9M114_F_NUMBER_DEM << 16) | 862 (MT9M114_F_NUMBER_DEFAULT_NUM << 8) | MT9M114_F_NUMBER_DEM; 863 return 0; 864 } 865 866 /* Horizontal flip the image. */ 867 static int mt9m114_g_hflip(struct v4l2_subdev *sd, s32 *val) 868 { 869 struct i2c_client *c = v4l2_get_subdevdata(sd); 870 int ret; 871 u32 data; 872 873 ret = mt9m114_read_reg(c, MISENSOR_16BIT, 874 (u32)MISENSOR_READ_MODE, &data); 875 if (ret) 876 return ret; 877 *val = !!(data & MISENSOR_HFLIP_MASK); 878 879 return 0; 880 } 881 882 static int mt9m114_g_vflip(struct v4l2_subdev *sd, s32 *val) 883 { 884 struct i2c_client *c = v4l2_get_subdevdata(sd); 885 int ret; 886 u32 data; 887 888 ret = mt9m114_read_reg(c, MISENSOR_16BIT, 889 (u32)MISENSOR_READ_MODE, &data); 890 if (ret) 891 return ret; 892 *val = !!(data & MISENSOR_VFLIP_MASK); 893 894 return 0; 895 } 896 897 static long mt9m114_s_exposure(struct v4l2_subdev *sd, 898 struct atomisp_exposure *exposure) 899 { 900 struct i2c_client *client = v4l2_get_subdevdata(sd); 901 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 902 int ret = 0; 903 unsigned int coarse_integration = 0; 904 unsigned int f_lines = 0; 905 unsigned int frame_len_lines = 0; /* ExposureTime.FrameLengthLines; */ 906 unsigned int analog_gain, digital_gain; 907 u32 analog_gain_to_write = 0; 908 909 dev_dbg(&client->dev, "%s(0x%X 0x%X 0x%X)\n", __func__, 910 exposure->integration_time[0], exposure->gain[0], 911 exposure->gain[1]); 912 913 coarse_integration = exposure->integration_time[0]; 914 /* 915 * fine_integration = ExposureTime.FineIntegrationTime; 916 * frame_len_lines = ExposureTime.FrameLengthLines; 917 */ 918 f_lines = mt9m114_res[dev->res].lines_per_frame; 919 analog_gain = exposure->gain[0]; 920 digital_gain = exposure->gain[1]; 921 if (!dev->streamon) { 922 /*Save the first exposure values while stream is off*/ 923 dev->first_exp = coarse_integration; 924 dev->first_gain = analog_gain; 925 dev->first_diggain = digital_gain; 926 } 927 /* digital_gain = 0x400 * (((u16) digital_gain) >> 8) + */ 928 /* ((unsigned int)(0x400 * (((u16) digital_gain) & 0xFF)) >>8); */ 929 930 /* set frame length */ 931 if (f_lines < coarse_integration + 6) 932 f_lines = coarse_integration + 6; 933 if (f_lines < frame_len_lines) 934 f_lines = frame_len_lines; 935 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 0x300A, f_lines); 936 if (ret) { 937 v4l2_err(client, "%s: fail to set f_lines\n", __func__); 938 return -EINVAL; 939 } 940 941 /* set coarse integration */ 942 /* 943 * 3A provide real exposure time. 944 * should not translate to any value here. 945 */ 946 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 947 REG_EXPO_COARSE, (u16)(coarse_integration)); 948 if (ret) { 949 v4l2_err(client, "%s: fail to set exposure time\n", __func__); 950 return -EINVAL; 951 } 952 953 /* 954 * set analog/digital gain 955 switch(analog_gain) 956 { 957 case 0: 958 analog_gain_to_write = 0x0; 959 break; 960 case 1: 961 analog_gain_to_write = 0x20; 962 break; 963 case 2: 964 analog_gain_to_write = 0x60; 965 break; 966 case 4: 967 analog_gain_to_write = 0xA0; 968 break; 969 case 8: 970 analog_gain_to_write = 0xE0; 971 break; 972 default: 973 analog_gain_to_write = 0x20; 974 break; 975 } 976 */ 977 if (digital_gain >= 16 || digital_gain <= 1) 978 digital_gain = 1; 979 /* 980 * analog_gain_to_write = (u16)((digital_gain << 12) 981 * | analog_gain_to_write); 982 */ 983 analog_gain_to_write = (u16)((digital_gain << 12) | (u16)analog_gain); 984 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 985 REG_GAIN, analog_gain_to_write); 986 if (ret) { 987 v4l2_err(client, "%s: fail to set analog_gain_to_write\n", 988 __func__); 989 return -EINVAL; 990 } 991 992 return ret; 993 } 994 995 static long mt9m114_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) 996 { 997 switch (cmd) { 998 case ATOMISP_IOC_S_EXPOSURE: 999 return mt9m114_s_exposure(sd, arg); 1000 default: 1001 return -EINVAL; 1002 } 1003 1004 return 0; 1005 } 1006 1007 /* 1008 * This returns the exposure time being used. This should only be used 1009 * for filling in EXIF data, not for actual image processing. 1010 */ 1011 static int mt9m114_g_exposure(struct v4l2_subdev *sd, s32 *value) 1012 { 1013 struct i2c_client *client = v4l2_get_subdevdata(sd); 1014 u32 coarse; 1015 int ret; 1016 1017 /* the fine integration time is currently not calculated */ 1018 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 1019 REG_EXPO_COARSE, &coarse); 1020 if (ret) 1021 return ret; 1022 1023 *value = coarse; 1024 return 0; 1025 } 1026 1027 /* 1028 * This function will return the sensor supported max exposure zone number. 1029 * the sensor which supports max exposure zone number is 1. 1030 */ 1031 static int mt9m114_g_exposure_zone_num(struct v4l2_subdev *sd, s32 *val) 1032 { 1033 *val = 1; 1034 1035 return 0; 1036 } 1037 1038 /* 1039 * set exposure metering, average/center_weighted/spot/matrix. 1040 */ 1041 static int mt9m114_s_exposure_metering(struct v4l2_subdev *sd, s32 val) 1042 { 1043 struct i2c_client *client = v4l2_get_subdevdata(sd); 1044 int ret; 1045 1046 switch (val) { 1047 case V4L2_EXPOSURE_METERING_SPOT: 1048 ret = mt9m114_write_reg_array(client, mt9m114_exp_average, 1049 NO_POLLING); 1050 if (ret) { 1051 dev_err(&client->dev, "write exp_average reg err.\n"); 1052 return ret; 1053 } 1054 break; 1055 case V4L2_EXPOSURE_METERING_CENTER_WEIGHTED: 1056 default: 1057 ret = mt9m114_write_reg_array(client, mt9m114_exp_center, 1058 NO_POLLING); 1059 if (ret) { 1060 dev_err(&client->dev, "write exp_default reg err"); 1061 return ret; 1062 } 1063 } 1064 1065 return 0; 1066 } 1067 1068 /* 1069 * This function is for touch exposure feature. 1070 */ 1071 static int mt9m114_s_exposure_selection(struct v4l2_subdev *sd, 1072 struct v4l2_subdev_state *sd_state, 1073 struct v4l2_subdev_selection *sel) 1074 { 1075 struct i2c_client *client = v4l2_get_subdevdata(sd); 1076 struct misensor_reg exp_reg; 1077 int width, height; 1078 int grid_width, grid_height; 1079 int grid_left, grid_top, grid_right, grid_bottom; 1080 int win_left, win_top, win_right, win_bottom; 1081 int i, j; 1082 int ret; 1083 1084 if (sel->which != V4L2_SUBDEV_FORMAT_TRY && 1085 sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) 1086 return -EINVAL; 1087 1088 grid_left = sel->r.left; 1089 grid_top = sel->r.top; 1090 grid_right = sel->r.left + sel->r.width - 1; 1091 grid_bottom = sel->r.top + sel->r.height - 1; 1092 1093 ret = mt9m114_res2size(sd, &width, &height); 1094 if (ret) 1095 return ret; 1096 1097 grid_width = width / 5; 1098 grid_height = height / 5; 1099 1100 if (grid_width && grid_height) { 1101 win_left = grid_left / grid_width; 1102 win_top = grid_top / grid_height; 1103 win_right = grid_right / grid_width; 1104 win_bottom = grid_bottom / grid_height; 1105 } else { 1106 dev_err(&client->dev, "Incorrect exp grid.\n"); 1107 return -EINVAL; 1108 } 1109 1110 win_left = clamp_t(int, win_left, 0, 4); 1111 win_top = clamp_t(int, win_top, 0, 4); 1112 win_right = clamp_t(int, win_right, 0, 4); 1113 win_bottom = clamp_t(int, win_bottom, 0, 4); 1114 1115 ret = mt9m114_write_reg_array(client, mt9m114_exp_average, NO_POLLING); 1116 if (ret) { 1117 dev_err(&client->dev, "write exp_average reg err.\n"); 1118 return ret; 1119 } 1120 1121 for (i = win_top; i <= win_bottom; i++) { 1122 for (j = win_left; j <= win_right; j++) { 1123 exp_reg = mt9m114_exp_win[i][j]; 1124 1125 ret = mt9m114_write_reg(client, exp_reg.length, 1126 exp_reg.reg, exp_reg.val); 1127 if (ret) { 1128 dev_err(&client->dev, "write exp_reg err.\n"); 1129 return ret; 1130 } 1131 } 1132 } 1133 1134 return 0; 1135 } 1136 1137 static int mt9m114_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val) 1138 { 1139 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1140 1141 *val = mt9m114_res[dev->res].bin_factor_x; 1142 1143 return 0; 1144 } 1145 1146 static int mt9m114_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val) 1147 { 1148 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1149 1150 *val = mt9m114_res[dev->res].bin_factor_y; 1151 1152 return 0; 1153 } 1154 1155 static int mt9m114_s_ev(struct v4l2_subdev *sd, s32 val) 1156 { 1157 struct i2c_client *c = v4l2_get_subdevdata(sd); 1158 s32 luma = 0x37; 1159 int err; 1160 1161 /* 1162 * EV value only support -2 to 2 1163 * 0: 0x37, 1:0x47, 2:0x57, -1:0x27, -2:0x17 1164 */ 1165 if (val < -2 || val > 2) 1166 return -EINVAL; 1167 luma += 0x10 * val; 1168 dev_dbg(&c->dev, "%s val:%d luma:0x%x\n", __func__, val, luma); 1169 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC87A); 1170 if (err) { 1171 dev_err(&c->dev, "%s logic addr access error\n", __func__); 1172 return err; 1173 } 1174 err = mt9m114_write_reg(c, MISENSOR_8BIT, 0xC87A, (u32)luma); 1175 if (err) { 1176 dev_err(&c->dev, "%s write target_average_luma failed\n", 1177 __func__); 1178 return err; 1179 } 1180 udelay(10); 1181 1182 return 0; 1183 } 1184 1185 static int mt9m114_g_ev(struct v4l2_subdev *sd, s32 *val) 1186 { 1187 struct i2c_client *c = v4l2_get_subdevdata(sd); 1188 int err; 1189 u32 luma; 1190 1191 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC87A); 1192 if (err) { 1193 dev_err(&c->dev, "%s logic addr access error\n", __func__); 1194 return err; 1195 } 1196 err = mt9m114_read_reg(c, MISENSOR_8BIT, 0xC87A, &luma); 1197 if (err) { 1198 dev_err(&c->dev, "%s read target_average_luma failed\n", 1199 __func__); 1200 return err; 1201 } 1202 luma -= 0x17; 1203 luma /= 0x10; 1204 *val = (s32)luma - 2; 1205 dev_dbg(&c->dev, "%s val:%d\n", __func__, *val); 1206 1207 return 0; 1208 } 1209 1210 /* 1211 * Fake interface 1212 * mt9m114 now can not support 3a_lock 1213 */ 1214 static int mt9m114_s_3a_lock(struct v4l2_subdev *sd, s32 val) 1215 { 1216 aaalock = val; 1217 return 0; 1218 } 1219 1220 static int mt9m114_g_3a_lock(struct v4l2_subdev *sd, s32 *val) 1221 { 1222 if (aaalock) 1223 return V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE 1224 | V4L2_LOCK_FOCUS; 1225 return 0; 1226 } 1227 1228 static int mt9m114_s_ctrl(struct v4l2_ctrl *ctrl) 1229 { 1230 struct mt9m114_device *dev = 1231 container_of(ctrl->handler, struct mt9m114_device, ctrl_handler); 1232 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); 1233 int ret = 0; 1234 1235 switch (ctrl->id) { 1236 case V4L2_CID_VFLIP: 1237 dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n", 1238 __func__, ctrl->val); 1239 ret = mt9m114_t_vflip(&dev->sd, ctrl->val); 1240 break; 1241 case V4L2_CID_HFLIP: 1242 dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n", 1243 __func__, ctrl->val); 1244 ret = mt9m114_t_hflip(&dev->sd, ctrl->val); 1245 break; 1246 case V4L2_CID_EXPOSURE_METERING: 1247 ret = mt9m114_s_exposure_metering(&dev->sd, ctrl->val); 1248 break; 1249 case V4L2_CID_EXPOSURE: 1250 ret = mt9m114_s_ev(&dev->sd, ctrl->val); 1251 break; 1252 case V4L2_CID_3A_LOCK: 1253 ret = mt9m114_s_3a_lock(&dev->sd, ctrl->val); 1254 break; 1255 default: 1256 ret = -EINVAL; 1257 } 1258 return ret; 1259 } 1260 1261 static int mt9m114_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 1262 { 1263 struct mt9m114_device *dev = 1264 container_of(ctrl->handler, struct mt9m114_device, ctrl_handler); 1265 int ret = 0; 1266 1267 switch (ctrl->id) { 1268 case V4L2_CID_VFLIP: 1269 ret = mt9m114_g_vflip(&dev->sd, &ctrl->val); 1270 break; 1271 case V4L2_CID_HFLIP: 1272 ret = mt9m114_g_hflip(&dev->sd, &ctrl->val); 1273 break; 1274 case V4L2_CID_FOCAL_ABSOLUTE: 1275 ret = mt9m114_g_focal(&dev->sd, &ctrl->val); 1276 break; 1277 case V4L2_CID_FNUMBER_ABSOLUTE: 1278 ret = mt9m114_g_fnumber(&dev->sd, &ctrl->val); 1279 break; 1280 case V4L2_CID_FNUMBER_RANGE: 1281 ret = mt9m114_g_fnumber_range(&dev->sd, &ctrl->val); 1282 break; 1283 case V4L2_CID_EXPOSURE_ABSOLUTE: 1284 ret = mt9m114_g_exposure(&dev->sd, &ctrl->val); 1285 break; 1286 case V4L2_CID_EXPOSURE_ZONE_NUM: 1287 ret = mt9m114_g_exposure_zone_num(&dev->sd, &ctrl->val); 1288 break; 1289 case V4L2_CID_BIN_FACTOR_HORZ: 1290 ret = mt9m114_g_bin_factor_x(&dev->sd, &ctrl->val); 1291 break; 1292 case V4L2_CID_BIN_FACTOR_VERT: 1293 ret = mt9m114_g_bin_factor_y(&dev->sd, &ctrl->val); 1294 break; 1295 case V4L2_CID_EXPOSURE: 1296 ret = mt9m114_g_ev(&dev->sd, &ctrl->val); 1297 break; 1298 case V4L2_CID_3A_LOCK: 1299 ret = mt9m114_g_3a_lock(&dev->sd, &ctrl->val); 1300 break; 1301 default: 1302 ret = -EINVAL; 1303 } 1304 1305 return ret; 1306 } 1307 1308 static const struct v4l2_ctrl_ops ctrl_ops = { 1309 .s_ctrl = mt9m114_s_ctrl, 1310 .g_volatile_ctrl = mt9m114_g_volatile_ctrl 1311 }; 1312 1313 static struct v4l2_ctrl_config mt9m114_controls[] = { 1314 { 1315 .ops = &ctrl_ops, 1316 .id = V4L2_CID_VFLIP, 1317 .name = "Image v-Flip", 1318 .type = V4L2_CTRL_TYPE_INTEGER, 1319 .min = 0, 1320 .max = 1, 1321 .step = 1, 1322 .def = 0, 1323 }, 1324 { 1325 .ops = &ctrl_ops, 1326 .id = V4L2_CID_HFLIP, 1327 .name = "Image h-Flip", 1328 .type = V4L2_CTRL_TYPE_INTEGER, 1329 .min = 0, 1330 .max = 1, 1331 .step = 1, 1332 .def = 0, 1333 }, 1334 { 1335 .ops = &ctrl_ops, 1336 .id = V4L2_CID_FOCAL_ABSOLUTE, 1337 .name = "focal length", 1338 .type = V4L2_CTRL_TYPE_INTEGER, 1339 .min = MT9M114_FOCAL_LENGTH_DEFAULT, 1340 .max = MT9M114_FOCAL_LENGTH_DEFAULT, 1341 .step = 1, 1342 .def = MT9M114_FOCAL_LENGTH_DEFAULT, 1343 .flags = 0, 1344 }, 1345 { 1346 .ops = &ctrl_ops, 1347 .id = V4L2_CID_FNUMBER_ABSOLUTE, 1348 .name = "f-number", 1349 .type = V4L2_CTRL_TYPE_INTEGER, 1350 .min = MT9M114_F_NUMBER_DEFAULT, 1351 .max = MT9M114_F_NUMBER_DEFAULT, 1352 .step = 1, 1353 .def = MT9M114_F_NUMBER_DEFAULT, 1354 .flags = 0, 1355 }, 1356 { 1357 .ops = &ctrl_ops, 1358 .id = V4L2_CID_FNUMBER_RANGE, 1359 .name = "f-number range", 1360 .type = V4L2_CTRL_TYPE_INTEGER, 1361 .min = MT9M114_F_NUMBER_RANGE, 1362 .max = MT9M114_F_NUMBER_RANGE, 1363 .step = 1, 1364 .def = MT9M114_F_NUMBER_RANGE, 1365 .flags = 0, 1366 }, 1367 { 1368 .ops = &ctrl_ops, 1369 .id = V4L2_CID_EXPOSURE_ABSOLUTE, 1370 .name = "exposure", 1371 .type = V4L2_CTRL_TYPE_INTEGER, 1372 .min = 0, 1373 .max = 0xffff, 1374 .step = 1, 1375 .def = 0, 1376 .flags = 0, 1377 }, 1378 { 1379 .ops = &ctrl_ops, 1380 .id = V4L2_CID_EXPOSURE_ZONE_NUM, 1381 .name = "one-time exposure zone number", 1382 .type = V4L2_CTRL_TYPE_INTEGER, 1383 .min = 0, 1384 .max = 0xffff, 1385 .step = 1, 1386 .def = 0, 1387 .flags = 0, 1388 }, 1389 { 1390 .ops = &ctrl_ops, 1391 .id = V4L2_CID_EXPOSURE_METERING, 1392 .name = "metering", 1393 .type = V4L2_CTRL_TYPE_MENU, 1394 .min = 0, 1395 .max = 3, 1396 .step = 0, 1397 .def = 1, 1398 .flags = 0, 1399 }, 1400 { 1401 .ops = &ctrl_ops, 1402 .id = V4L2_CID_BIN_FACTOR_HORZ, 1403 .name = "horizontal binning factor", 1404 .type = V4L2_CTRL_TYPE_INTEGER, 1405 .min = 0, 1406 .max = MT9M114_BIN_FACTOR_MAX, 1407 .step = 1, 1408 .def = 0, 1409 .flags = 0, 1410 }, 1411 { 1412 .ops = &ctrl_ops, 1413 .id = V4L2_CID_BIN_FACTOR_VERT, 1414 .name = "vertical binning factor", 1415 .type = V4L2_CTRL_TYPE_INTEGER, 1416 .min = 0, 1417 .max = MT9M114_BIN_FACTOR_MAX, 1418 .step = 1, 1419 .def = 0, 1420 .flags = 0, 1421 }, 1422 { 1423 .ops = &ctrl_ops, 1424 .id = V4L2_CID_EXPOSURE, 1425 .name = "exposure biasx", 1426 .type = V4L2_CTRL_TYPE_INTEGER, 1427 .min = -2, 1428 .max = 2, 1429 .step = 1, 1430 .def = 0, 1431 .flags = 0, 1432 }, 1433 { 1434 .ops = &ctrl_ops, 1435 .id = V4L2_CID_3A_LOCK, 1436 .name = "3a lock", 1437 .type = V4L2_CTRL_TYPE_BITMASK, 1438 .min = 0, 1439 .max = V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE | V4L2_LOCK_FOCUS, 1440 .step = 1, 1441 .def = 0, 1442 .flags = 0, 1443 }, 1444 }; 1445 1446 static int mt9m114_detect(struct mt9m114_device *dev, struct i2c_client *client) 1447 { 1448 struct i2c_adapter *adapter = client->adapter; 1449 u32 model; 1450 int ret; 1451 1452 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { 1453 dev_err(&client->dev, "%s: i2c error", __func__); 1454 return -ENODEV; 1455 } 1456 ret = mt9m114_read_reg(client, MISENSOR_16BIT, MT9M114_PID, &model); 1457 if (ret) 1458 return ret; 1459 dev->real_model_id = model; 1460 1461 if (model != MT9M114_MOD_ID) { 1462 dev_err(&client->dev, "%s: failed: client->addr = %x\n", 1463 __func__, client->addr); 1464 return -ENODEV; 1465 } 1466 1467 return 0; 1468 } 1469 1470 static int 1471 mt9m114_s_config(struct v4l2_subdev *sd, int irq, void *platform_data) 1472 { 1473 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1474 struct i2c_client *client = v4l2_get_subdevdata(sd); 1475 int ret; 1476 1477 if (!platform_data) 1478 return -ENODEV; 1479 1480 dev->platform_data = 1481 (struct camera_sensor_platform_data *)platform_data; 1482 1483 ret = power_up(sd); 1484 if (ret) { 1485 v4l2_err(client, "mt9m114 power-up err"); 1486 return ret; 1487 } 1488 1489 /* config & detect sensor */ 1490 ret = mt9m114_detect(dev, client); 1491 if (ret) { 1492 v4l2_err(client, "mt9m114_detect err s_config.\n"); 1493 goto fail_detect; 1494 } 1495 1496 ret = dev->platform_data->csi_cfg(sd, 1); 1497 if (ret) 1498 goto fail_csi_cfg; 1499 1500 ret = mt9m114_set_suspend(sd); 1501 if (ret) { 1502 v4l2_err(client, "mt9m114 suspend err"); 1503 return ret; 1504 } 1505 1506 ret = power_down(sd); 1507 if (ret) { 1508 v4l2_err(client, "mt9m114 power down err"); 1509 return ret; 1510 } 1511 1512 return ret; 1513 1514 fail_csi_cfg: 1515 dev->platform_data->csi_cfg(sd, 0); 1516 fail_detect: 1517 power_down(sd); 1518 dev_err(&client->dev, "sensor power-gating failed\n"); 1519 return ret; 1520 } 1521 1522 /* Horizontal flip the image. */ 1523 static int mt9m114_t_hflip(struct v4l2_subdev *sd, int value) 1524 { 1525 struct i2c_client *c = v4l2_get_subdevdata(sd); 1526 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1527 int err; 1528 /* set for direct mode */ 1529 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC850); 1530 if (value) { 1531 /* enable H flip ctx A */ 1532 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x01, 0x01); 1533 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x01, 0x01); 1534 /* ctx B */ 1535 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x01, 0x01); 1536 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x01, 0x01); 1537 1538 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1539 MISENSOR_HFLIP_MASK, MISENSOR_FLIP_EN); 1540 1541 dev->bpat = MT9M114_BPAT_GRGRBGBG; 1542 } else { 1543 /* disable H flip ctx A */ 1544 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x01, 0x00); 1545 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x01, 0x00); 1546 /* ctx B */ 1547 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x01, 0x00); 1548 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x01, 0x00); 1549 1550 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1551 MISENSOR_HFLIP_MASK, MISENSOR_FLIP_DIS); 1552 1553 dev->bpat = MT9M114_BPAT_BGBGGRGR; 1554 } 1555 1556 err += mt9m114_write_reg(c, MISENSOR_8BIT, 0x8404, 0x06); 1557 udelay(10); 1558 1559 return !!err; 1560 } 1561 1562 /* Vertically flip the image */ 1563 static int mt9m114_t_vflip(struct v4l2_subdev *sd, int value) 1564 { 1565 struct i2c_client *c = v4l2_get_subdevdata(sd); 1566 int err; 1567 /* set for direct mode */ 1568 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC850); 1569 if (value >= 1) { 1570 /* enable H flip - ctx A */ 1571 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x02, 0x01); 1572 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x02, 0x01); 1573 /* ctx B */ 1574 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x02, 0x01); 1575 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x02, 0x01); 1576 1577 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1578 MISENSOR_VFLIP_MASK, MISENSOR_FLIP_EN); 1579 } else { 1580 /* disable H flip - ctx A */ 1581 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x02, 0x00); 1582 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x02, 0x00); 1583 /* ctx B */ 1584 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x02, 0x00); 1585 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x02, 0x00); 1586 1587 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE, 1588 MISENSOR_VFLIP_MASK, MISENSOR_FLIP_DIS); 1589 } 1590 1591 err += mt9m114_write_reg(c, MISENSOR_8BIT, 0x8404, 0x06); 1592 udelay(10); 1593 1594 return !!err; 1595 } 1596 1597 static int mt9m114_g_frame_interval(struct v4l2_subdev *sd, 1598 struct v4l2_subdev_frame_interval *interval) 1599 { 1600 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1601 1602 interval->interval.numerator = 1; 1603 interval->interval.denominator = mt9m114_res[dev->res].fps; 1604 1605 return 0; 1606 } 1607 1608 static int mt9m114_s_stream(struct v4l2_subdev *sd, int enable) 1609 { 1610 int ret; 1611 struct i2c_client *c = v4l2_get_subdevdata(sd); 1612 struct mt9m114_device *dev = to_mt9m114_sensor(sd); 1613 struct atomisp_exposure exposure; 1614 1615 if (enable) { 1616 ret = mt9m114_write_reg_array(c, mt9m114_chgstat_reg, 1617 POST_POLLING); 1618 if (ret < 0) 1619 return ret; 1620 1621 if (dev->first_exp > MT9M114_MAX_FIRST_EXP) { 1622 exposure.integration_time[0] = dev->first_exp; 1623 exposure.gain[0] = dev->first_gain; 1624 exposure.gain[1] = dev->first_diggain; 1625 mt9m114_s_exposure(sd, &exposure); 1626 } 1627 dev->streamon = 1; 1628 1629 } else { 1630 dev->streamon = 0; 1631 ret = mt9m114_set_suspend(sd); 1632 } 1633 1634 return ret; 1635 } 1636 1637 static int mt9m114_enum_mbus_code(struct v4l2_subdev *sd, 1638 struct v4l2_subdev_state *sd_state, 1639 struct v4l2_subdev_mbus_code_enum *code) 1640 { 1641 if (code->index) 1642 return -EINVAL; 1643 code->code = MEDIA_BUS_FMT_SGRBG10_1X10; 1644 1645 return 0; 1646 } 1647 1648 static int mt9m114_enum_frame_size(struct v4l2_subdev *sd, 1649 struct v4l2_subdev_state *sd_state, 1650 struct v4l2_subdev_frame_size_enum *fse) 1651 { 1652 unsigned int index = fse->index; 1653 1654 if (index >= N_RES) 1655 return -EINVAL; 1656 1657 fse->min_width = mt9m114_res[index].width; 1658 fse->min_height = mt9m114_res[index].height; 1659 fse->max_width = mt9m114_res[index].width; 1660 fse->max_height = mt9m114_res[index].height; 1661 1662 return 0; 1663 } 1664 1665 static int mt9m114_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) 1666 { 1667 int index; 1668 struct mt9m114_device *snr = to_mt9m114_sensor(sd); 1669 1670 if (!frames) 1671 return -EINVAL; 1672 1673 for (index = 0; index < N_RES; index++) { 1674 if (mt9m114_res[index].res == snr->res) 1675 break; 1676 } 1677 1678 if (index >= N_RES) 1679 return -EINVAL; 1680 1681 *frames = mt9m114_res[index].skip_frames; 1682 1683 return 0; 1684 } 1685 1686 static const struct v4l2_subdev_video_ops mt9m114_video_ops = { 1687 .s_stream = mt9m114_s_stream, 1688 .g_frame_interval = mt9m114_g_frame_interval, 1689 }; 1690 1691 static const struct v4l2_subdev_sensor_ops mt9m114_sensor_ops = { 1692 .g_skip_frames = mt9m114_g_skip_frames, 1693 }; 1694 1695 static const struct v4l2_subdev_core_ops mt9m114_core_ops = { 1696 .s_power = mt9m114_s_power, 1697 .ioctl = mt9m114_ioctl, 1698 }; 1699 1700 /* REVISIT: Do we need pad operations? */ 1701 static const struct v4l2_subdev_pad_ops mt9m114_pad_ops = { 1702 .enum_mbus_code = mt9m114_enum_mbus_code, 1703 .enum_frame_size = mt9m114_enum_frame_size, 1704 .get_fmt = mt9m114_get_fmt, 1705 .set_fmt = mt9m114_set_fmt, 1706 .set_selection = mt9m114_s_exposure_selection, 1707 }; 1708 1709 static const struct v4l2_subdev_ops mt9m114_ops = { 1710 .core = &mt9m114_core_ops, 1711 .video = &mt9m114_video_ops, 1712 .pad = &mt9m114_pad_ops, 1713 .sensor = &mt9m114_sensor_ops, 1714 }; 1715 1716 static void mt9m114_remove(struct i2c_client *client) 1717 { 1718 struct mt9m114_device *dev; 1719 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1720 1721 dev = container_of(sd, struct mt9m114_device, sd); 1722 dev->platform_data->csi_cfg(sd, 0); 1723 v4l2_device_unregister_subdev(sd); 1724 media_entity_cleanup(&dev->sd.entity); 1725 v4l2_ctrl_handler_free(&dev->ctrl_handler); 1726 kfree(dev); 1727 } 1728 1729 static int mt9m114_probe(struct i2c_client *client) 1730 { 1731 struct mt9m114_device *dev; 1732 int ret = 0; 1733 unsigned int i; 1734 void *pdata; 1735 1736 /* Setup sensor configuration structure */ 1737 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 1738 if (!dev) 1739 return -ENOMEM; 1740 1741 v4l2_i2c_subdev_init(&dev->sd, client, &mt9m114_ops); 1742 pdata = gmin_camera_platform_data(&dev->sd, 1743 ATOMISP_INPUT_FORMAT_RAW_10, 1744 atomisp_bayer_order_grbg); 1745 if (pdata) 1746 ret = mt9m114_s_config(&dev->sd, client->irq, pdata); 1747 if (!pdata || ret) { 1748 v4l2_device_unregister_subdev(&dev->sd); 1749 kfree(dev); 1750 return ret; 1751 } 1752 1753 ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA); 1754 if (ret) { 1755 v4l2_device_unregister_subdev(&dev->sd); 1756 kfree(dev); 1757 /* Coverity CID 298095 - return on error */ 1758 return ret; 1759 } 1760 1761 /* TODO add format code here */ 1762 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1763 dev->pad.flags = MEDIA_PAD_FL_SOURCE; 1764 dev->format.code = MEDIA_BUS_FMT_SGRBG10_1X10; 1765 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1766 1767 ret = 1768 v4l2_ctrl_handler_init(&dev->ctrl_handler, 1769 ARRAY_SIZE(mt9m114_controls)); 1770 if (ret) { 1771 mt9m114_remove(client); 1772 return ret; 1773 } 1774 1775 for (i = 0; i < ARRAY_SIZE(mt9m114_controls); i++) 1776 v4l2_ctrl_new_custom(&dev->ctrl_handler, &mt9m114_controls[i], 1777 NULL); 1778 1779 if (dev->ctrl_handler.error) { 1780 mt9m114_remove(client); 1781 return dev->ctrl_handler.error; 1782 } 1783 1784 /* Use same lock for controls as for everything else. */ 1785 dev->ctrl_handler.lock = &dev->input_lock; 1786 dev->sd.ctrl_handler = &dev->ctrl_handler; 1787 1788 /* REVISIT: Do we need media controller? */ 1789 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); 1790 if (ret) { 1791 mt9m114_remove(client); 1792 return ret; 1793 } 1794 return 0; 1795 } 1796 1797 static const struct acpi_device_id mt9m114_acpi_match[] = { 1798 { "INT33F0" }, 1799 { "CRMT1040" }, 1800 {}, 1801 }; 1802 MODULE_DEVICE_TABLE(acpi, mt9m114_acpi_match); 1803 1804 static struct i2c_driver mt9m114_driver = { 1805 .driver = { 1806 .name = "mt9m114", 1807 .acpi_match_table = mt9m114_acpi_match, 1808 }, 1809 .probe_new = mt9m114_probe, 1810 .remove = mt9m114_remove, 1811 }; 1812 module_i2c_driver(mt9m114_driver); 1813 1814 MODULE_AUTHOR("Shuguang Gong <Shuguang.gong@intel.com>"); 1815 MODULE_LICENSE("GPL"); 1816