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