drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c

   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, &reg_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, &reg_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, &reg_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, &reg_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, &reg_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, &reg_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, &reg_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, &reg_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, &reg_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");