1 /* 2 * Support for GalaxyCore GC0310 VGA camera sensor. 3 * 4 * Copyright (c) 2013 Intel Corporation. All Rights Reserved. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License version 8 * 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 */ 16 17 #include <linux/module.h> 18 #include <linux/types.h> 19 #include <linux/kernel.h> 20 #include <linux/mm.h> 21 #include <linux/string.h> 22 #include <linux/errno.h> 23 #include <linux/init.h> 24 #include <linux/kmod.h> 25 #include <linux/device.h> 26 #include <linux/delay.h> 27 #include <linux/slab.h> 28 #include <linux/i2c.h> 29 #include <linux/gpio.h> 30 #include <linux/moduleparam.h> 31 #include <media/v4l2-device.h> 32 #include <linux/io.h> 33 #include "../include/linux/atomisp_gmin_platform.h" 34 35 #include "gc0310.h" 36 37 /* i2c read/write stuff */ 38 static int gc0310_read_reg(struct i2c_client *client, 39 u16 data_length, u8 reg, u8 *val) 40 { 41 int err; 42 struct i2c_msg msg[2]; 43 unsigned char data[1]; 44 45 if (!client->adapter) { 46 dev_err(&client->dev, "%s error, no client->adapter\n", 47 __func__); 48 return -ENODEV; 49 } 50 51 if (data_length != GC0310_8BIT) { 52 dev_err(&client->dev, "%s error, invalid data length\n", 53 __func__); 54 return -EINVAL; 55 } 56 57 memset(msg, 0, sizeof(msg)); 58 59 msg[0].addr = client->addr; 60 msg[0].flags = 0; 61 msg[0].len = I2C_MSG_LENGTH; 62 msg[0].buf = data; 63 64 /* high byte goes out first */ 65 data[0] = (u8)(reg & 0xff); 66 67 msg[1].addr = client->addr; 68 msg[1].len = data_length; 69 msg[1].flags = I2C_M_RD; 70 msg[1].buf = data; 71 72 err = i2c_transfer(client->adapter, msg, 2); 73 if (err != 2) { 74 if (err >= 0) 75 err = -EIO; 76 dev_err(&client->dev, 77 "read from offset 0x%x error %d", reg, err); 78 return err; 79 } 80 81 *val = 0; 82 /* high byte comes first */ 83 if (data_length == GC0310_8BIT) 84 *val = (u8)data[0]; 85 86 return 0; 87 } 88 89 static int gc0310_i2c_write(struct i2c_client *client, u16 len, u8 *data) 90 { 91 struct i2c_msg msg; 92 const int num_msg = 1; 93 int ret; 94 95 msg.addr = client->addr; 96 msg.flags = 0; 97 msg.len = len; 98 msg.buf = data; 99 ret = i2c_transfer(client->adapter, &msg, 1); 100 101 return ret == num_msg ? 0 : -EIO; 102 } 103 104 static int gc0310_write_reg(struct i2c_client *client, u16 data_length, 105 u8 reg, u8 val) 106 { 107 int ret; 108 unsigned char data[2] = {0}; 109 u8 *wreg = (u8 *)data; 110 const u16 len = data_length + sizeof(u8); /* 8-bit address + data */ 111 112 if (data_length != GC0310_8BIT) { 113 dev_err(&client->dev, 114 "%s error, invalid data_length\n", __func__); 115 return -EINVAL; 116 } 117 118 /* high byte goes out first */ 119 *wreg = (u8)(reg & 0xff); 120 121 if (data_length == GC0310_8BIT) 122 data[1] = (u8)(val); 123 124 ret = gc0310_i2c_write(client, len, data); 125 if (ret) 126 dev_err(&client->dev, 127 "write error: wrote 0x%x to offset 0x%x error %d", 128 val, reg, ret); 129 130 return ret; 131 } 132 133 /* 134 * gc0310_write_reg_array - Initializes a list of GC0310 registers 135 * @client: i2c driver client structure 136 * @reglist: list of registers to be written 137 * 138 * This function initializes a list of registers. When consecutive addresses 139 * are found in a row on the list, this function creates a buffer and sends 140 * consecutive data in a single i2c_transfer(). 141 * 142 * __gc0310_flush_reg_array, __gc0310_buf_reg_array() and 143 * __gc0310_write_reg_is_consecutive() are internal functions to 144 * gc0310_write_reg_array_fast() and should be not used anywhere else. 145 * 146 */ 147 148 static int __gc0310_flush_reg_array(struct i2c_client *client, 149 struct gc0310_write_ctrl *ctrl) 150 { 151 u16 size; 152 153 if (ctrl->index == 0) 154 return 0; 155 156 size = sizeof(u8) + ctrl->index; /* 8-bit address + data */ 157 ctrl->buffer.addr = (u8)(ctrl->buffer.addr); 158 ctrl->index = 0; 159 160 return gc0310_i2c_write(client, size, (u8 *)&ctrl->buffer); 161 } 162 163 static int __gc0310_buf_reg_array(struct i2c_client *client, 164 struct gc0310_write_ctrl *ctrl, 165 const struct gc0310_reg *next) 166 { 167 int size; 168 169 switch (next->type) { 170 case GC0310_8BIT: 171 size = 1; 172 ctrl->buffer.data[ctrl->index] = (u8)next->val; 173 break; 174 default: 175 return -EINVAL; 176 } 177 178 /* When first item is added, we need to store its starting address */ 179 if (ctrl->index == 0) 180 ctrl->buffer.addr = next->reg; 181 182 ctrl->index += size; 183 184 /* 185 * Buffer cannot guarantee free space for u32? Better flush it to avoid 186 * possible lack of memory for next item. 187 */ 188 if (ctrl->index + sizeof(u8) >= GC0310_MAX_WRITE_BUF_SIZE) 189 return __gc0310_flush_reg_array(client, ctrl); 190 191 return 0; 192 } 193 194 static int __gc0310_write_reg_is_consecutive(struct i2c_client *client, 195 struct gc0310_write_ctrl *ctrl, 196 const struct gc0310_reg *next) 197 { 198 if (ctrl->index == 0) 199 return 1; 200 201 return ctrl->buffer.addr + ctrl->index == next->reg; 202 } 203 204 static int gc0310_write_reg_array(struct i2c_client *client, 205 const struct gc0310_reg *reglist) 206 { 207 const struct gc0310_reg *next = reglist; 208 struct gc0310_write_ctrl ctrl; 209 int err; 210 211 ctrl.index = 0; 212 for (; next->type != GC0310_TOK_TERM; next++) { 213 switch (next->type & GC0310_TOK_MASK) { 214 case GC0310_TOK_DELAY: 215 err = __gc0310_flush_reg_array(client, &ctrl); 216 if (err) 217 return err; 218 msleep(next->val); 219 break; 220 default: 221 /* 222 * If next address is not consecutive, data needs to be 223 * flushed before proceed. 224 */ 225 if (!__gc0310_write_reg_is_consecutive(client, &ctrl, 226 next)) { 227 err = __gc0310_flush_reg_array(client, &ctrl); 228 if (err) 229 return err; 230 } 231 err = __gc0310_buf_reg_array(client, &ctrl, next); 232 if (err) { 233 dev_err(&client->dev, "%s: write error, aborted\n", 234 __func__); 235 return err; 236 } 237 break; 238 } 239 } 240 241 return __gc0310_flush_reg_array(client, &ctrl); 242 } 243 static int gc0310_g_focal(struct v4l2_subdev *sd, s32 *val) 244 { 245 *val = (GC0310_FOCAL_LENGTH_NUM << 16) | GC0310_FOCAL_LENGTH_DEM; 246 return 0; 247 } 248 249 static int gc0310_g_fnumber(struct v4l2_subdev *sd, s32 *val) 250 { 251 /*const f number for imx*/ 252 *val = (GC0310_F_NUMBER_DEFAULT_NUM << 16) | GC0310_F_NUMBER_DEM; 253 return 0; 254 } 255 256 static int gc0310_g_fnumber_range(struct v4l2_subdev *sd, s32 *val) 257 { 258 *val = (GC0310_F_NUMBER_DEFAULT_NUM << 24) | 259 (GC0310_F_NUMBER_DEM << 16) | 260 (GC0310_F_NUMBER_DEFAULT_NUM << 8) | GC0310_F_NUMBER_DEM; 261 return 0; 262 } 263 264 static int gc0310_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val) 265 { 266 struct gc0310_device *dev = to_gc0310_sensor(sd); 267 268 *val = gc0310_res[dev->fmt_idx].bin_factor_x; 269 270 return 0; 271 } 272 273 static int gc0310_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val) 274 { 275 struct gc0310_device *dev = to_gc0310_sensor(sd); 276 277 *val = gc0310_res[dev->fmt_idx].bin_factor_y; 278 279 return 0; 280 } 281 282 static int gc0310_get_intg_factor(struct i2c_client *client, 283 struct camera_mipi_info *info, 284 const struct gc0310_resolution *res) 285 { 286 struct v4l2_subdev *sd = i2c_get_clientdata(client); 287 struct gc0310_device *dev = to_gc0310_sensor(sd); 288 struct atomisp_sensor_mode_data *buf = &info->data; 289 u16 val; 290 u8 reg_val; 291 int ret; 292 unsigned int hori_blanking; 293 unsigned int vert_blanking; 294 unsigned int sh_delay; 295 296 if (!info) 297 return -EINVAL; 298 299 /* pixel clock calculattion */ 300 dev->vt_pix_clk_freq_mhz = 14400000; // 16.8MHz 301 buf->vt_pix_clk_freq_mhz = dev->vt_pix_clk_freq_mhz; 302 pr_info("vt_pix_clk_freq_mhz=%d\n", buf->vt_pix_clk_freq_mhz); 303 304 /* get integration time */ 305 buf->coarse_integration_time_min = GC0310_COARSE_INTG_TIME_MIN; 306 buf->coarse_integration_time_max_margin = 307 GC0310_COARSE_INTG_TIME_MAX_MARGIN; 308 309 buf->fine_integration_time_min = GC0310_FINE_INTG_TIME_MIN; 310 buf->fine_integration_time_max_margin = 311 GC0310_FINE_INTG_TIME_MAX_MARGIN; 312 313 buf->fine_integration_time_def = GC0310_FINE_INTG_TIME_MIN; 314 buf->read_mode = res->bin_mode; 315 316 /* get the cropping and output resolution to ISP for this mode. */ 317 /* Getting crop_horizontal_start */ 318 ret = gc0310_read_reg(client, GC0310_8BIT, 319 GC0310_H_CROP_START_H, ®_val); 320 if (ret) 321 return ret; 322 val = (reg_val & 0xFF) << 8; 323 ret = gc0310_read_reg(client, GC0310_8BIT, 324 GC0310_H_CROP_START_L, ®_val); 325 if (ret) 326 return ret; 327 buf->crop_horizontal_start = val | (reg_val & 0xFF); 328 pr_info("crop_horizontal_start=%d\n", buf->crop_horizontal_start); 329 330 /* Getting crop_vertical_start */ 331 ret = gc0310_read_reg(client, GC0310_8BIT, 332 GC0310_V_CROP_START_H, ®_val); 333 if (ret) 334 return ret; 335 val = (reg_val & 0xFF) << 8; 336 ret = gc0310_read_reg(client, GC0310_8BIT, 337 GC0310_V_CROP_START_L, ®_val); 338 if (ret) 339 return ret; 340 buf->crop_vertical_start = val | (reg_val & 0xFF); 341 pr_info("crop_vertical_start=%d\n", buf->crop_vertical_start); 342 343 /* Getting output_width */ 344 ret = gc0310_read_reg(client, GC0310_8BIT, 345 GC0310_H_OUTSIZE_H, ®_val); 346 if (ret) 347 return ret; 348 val = (reg_val & 0xFF) << 8; 349 ret = gc0310_read_reg(client, GC0310_8BIT, 350 GC0310_H_OUTSIZE_L, ®_val); 351 if (ret) 352 return ret; 353 buf->output_width = val | (reg_val & 0xFF); 354 pr_info("output_width=%d\n", buf->output_width); 355 356 /* Getting output_height */ 357 ret = gc0310_read_reg(client, GC0310_8BIT, 358 GC0310_V_OUTSIZE_H, ®_val); 359 if (ret) 360 return ret; 361 val = (reg_val & 0xFF) << 8; 362 ret = gc0310_read_reg(client, GC0310_8BIT, 363 GC0310_V_OUTSIZE_L, ®_val); 364 if (ret) 365 return ret; 366 buf->output_height = val | (reg_val & 0xFF); 367 pr_info("output_height=%d\n", buf->output_height); 368 369 buf->crop_horizontal_end = buf->crop_horizontal_start + buf->output_width - 1; 370 buf->crop_vertical_end = buf->crop_vertical_start + buf->output_height - 1; 371 pr_info("crop_horizontal_end=%d\n", buf->crop_horizontal_end); 372 pr_info("crop_vertical_end=%d\n", buf->crop_vertical_end); 373 374 /* Getting line_length_pck */ 375 ret = gc0310_read_reg(client, GC0310_8BIT, 376 GC0310_H_BLANKING_H, ®_val); 377 if (ret) 378 return ret; 379 val = (reg_val & 0xFF) << 8; 380 ret = gc0310_read_reg(client, GC0310_8BIT, 381 GC0310_H_BLANKING_L, ®_val); 382 if (ret) 383 return ret; 384 hori_blanking = val | (reg_val & 0xFF); 385 ret = gc0310_read_reg(client, GC0310_8BIT, 386 GC0310_SH_DELAY, ®_val); 387 if (ret) 388 return ret; 389 sh_delay = reg_val; 390 buf->line_length_pck = buf->output_width + hori_blanking + sh_delay + 4; 391 pr_info("hori_blanking=%d sh_delay=%d line_length_pck=%d\n", hori_blanking, sh_delay, buf->line_length_pck); 392 393 /* Getting frame_length_lines */ 394 ret = gc0310_read_reg(client, GC0310_8BIT, 395 GC0310_V_BLANKING_H, ®_val); 396 if (ret) 397 return ret; 398 val = (reg_val & 0xFF) << 8; 399 ret = gc0310_read_reg(client, GC0310_8BIT, 400 GC0310_V_BLANKING_L, ®_val); 401 if (ret) 402 return ret; 403 vert_blanking = val | (reg_val & 0xFF); 404 buf->frame_length_lines = buf->output_height + vert_blanking; 405 pr_info("vert_blanking=%d frame_length_lines=%d\n", vert_blanking, buf->frame_length_lines); 406 407 buf->binning_factor_x = res->bin_factor_x ? 408 res->bin_factor_x : 1; 409 buf->binning_factor_y = res->bin_factor_y ? 410 res->bin_factor_y : 1; 411 return 0; 412 } 413 414 static int gc0310_set_gain(struct v4l2_subdev *sd, int gain) 415 416 { 417 struct i2c_client *client = v4l2_get_subdevdata(sd); 418 int ret; 419 u8 again, dgain; 420 421 if (gain < 0x20) 422 gain = 0x20; 423 if (gain > 0x80) 424 gain = 0x80; 425 426 if (gain >= 0x20 && gain < 0x40) { 427 again = 0x0; /* sqrt(2) */ 428 dgain = gain; 429 } else { 430 again = 0x2; /* 2 * sqrt(2) */ 431 dgain = gain / 2; 432 } 433 434 pr_info("gain=0x%x again=0x%x dgain=0x%x\n", gain, again, dgain); 435 436 /* set analog gain */ 437 ret = gc0310_write_reg(client, GC0310_8BIT, 438 GC0310_AGC_ADJ, again); 439 if (ret) 440 return ret; 441 442 /* set digital gain */ 443 ret = gc0310_write_reg(client, GC0310_8BIT, 444 GC0310_DGC_ADJ, dgain); 445 if (ret) 446 return ret; 447 448 return 0; 449 } 450 451 static int __gc0310_set_exposure(struct v4l2_subdev *sd, int coarse_itg, 452 int gain, int digitgain) 453 454 { 455 struct i2c_client *client = v4l2_get_subdevdata(sd); 456 int ret; 457 458 pr_info("coarse_itg=%d gain=%d digitgain=%d\n", coarse_itg, gain, digitgain); 459 460 /* set exposure */ 461 ret = gc0310_write_reg(client, GC0310_8BIT, 462 GC0310_AEC_PK_EXPO_L, 463 coarse_itg & 0xff); 464 if (ret) 465 return ret; 466 467 ret = gc0310_write_reg(client, GC0310_8BIT, 468 GC0310_AEC_PK_EXPO_H, 469 (coarse_itg >> 8) & 0x0f); 470 if (ret) 471 return ret; 472 473 ret = gc0310_set_gain(sd, gain); 474 if (ret) 475 return ret; 476 477 return ret; 478 } 479 480 static int gc0310_set_exposure(struct v4l2_subdev *sd, int exposure, 481 int gain, int digitgain) 482 { 483 struct gc0310_device *dev = to_gc0310_sensor(sd); 484 int ret; 485 486 mutex_lock(&dev->input_lock); 487 ret = __gc0310_set_exposure(sd, exposure, gain, digitgain); 488 mutex_unlock(&dev->input_lock); 489 490 return ret; 491 } 492 493 static long gc0310_s_exposure(struct v4l2_subdev *sd, 494 struct atomisp_exposure *exposure) 495 { 496 int exp = exposure->integration_time[0]; 497 int gain = exposure->gain[0]; 498 int digitgain = exposure->gain[1]; 499 500 /* we should not accept the invalid value below. */ 501 if (gain == 0) { 502 struct i2c_client *client = v4l2_get_subdevdata(sd); 503 v4l2_err(client, "%s: invalid value\n", __func__); 504 return -EINVAL; 505 } 506 507 return gc0310_set_exposure(sd, exp, gain, digitgain); 508 } 509 510 /* TO DO */ 511 static int gc0310_v_flip(struct v4l2_subdev *sd, s32 value) 512 { 513 return 0; 514 } 515 516 /* TO DO */ 517 static int gc0310_h_flip(struct v4l2_subdev *sd, s32 value) 518 { 519 return 0; 520 } 521 522 static long gc0310_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) 523 { 524 525 switch (cmd) { 526 case ATOMISP_IOC_S_EXPOSURE: 527 return gc0310_s_exposure(sd, arg); 528 default: 529 return -EINVAL; 530 } 531 return 0; 532 } 533 534 /* This returns the exposure time being used. This should only be used 535 * for filling in EXIF data, not for actual image processing. 536 */ 537 static int gc0310_q_exposure(struct v4l2_subdev *sd, s32 *value) 538 { 539 struct i2c_client *client = v4l2_get_subdevdata(sd); 540 u8 reg_v; 541 int ret; 542 543 /* get exposure */ 544 ret = gc0310_read_reg(client, GC0310_8BIT, 545 GC0310_AEC_PK_EXPO_L, 546 ®_v); 547 if (ret) 548 goto err; 549 550 *value = reg_v; 551 ret = gc0310_read_reg(client, GC0310_8BIT, 552 GC0310_AEC_PK_EXPO_H, 553 ®_v); 554 if (ret) 555 goto err; 556 557 *value = *value + (reg_v << 8); 558 err: 559 return ret; 560 } 561 562 static int gc0310_s_ctrl(struct v4l2_ctrl *ctrl) 563 { 564 struct gc0310_device *dev = 565 container_of(ctrl->handler, struct gc0310_device, ctrl_handler); 566 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); 567 int ret = 0; 568 569 switch (ctrl->id) { 570 case V4L2_CID_VFLIP: 571 dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n", 572 __func__, ctrl->val); 573 ret = gc0310_v_flip(&dev->sd, ctrl->val); 574 break; 575 case V4L2_CID_HFLIP: 576 dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n", 577 __func__, ctrl->val); 578 ret = gc0310_h_flip(&dev->sd, ctrl->val); 579 break; 580 default: 581 ret = -EINVAL; 582 } 583 return ret; 584 } 585 586 static int gc0310_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 587 { 588 struct gc0310_device *dev = 589 container_of(ctrl->handler, struct gc0310_device, ctrl_handler); 590 int ret = 0; 591 592 switch (ctrl->id) { 593 case V4L2_CID_EXPOSURE_ABSOLUTE: 594 ret = gc0310_q_exposure(&dev->sd, &ctrl->val); 595 break; 596 case V4L2_CID_FOCAL_ABSOLUTE: 597 ret = gc0310_g_focal(&dev->sd, &ctrl->val); 598 break; 599 case V4L2_CID_FNUMBER_ABSOLUTE: 600 ret = gc0310_g_fnumber(&dev->sd, &ctrl->val); 601 break; 602 case V4L2_CID_FNUMBER_RANGE: 603 ret = gc0310_g_fnumber_range(&dev->sd, &ctrl->val); 604 break; 605 case V4L2_CID_BIN_FACTOR_HORZ: 606 ret = gc0310_g_bin_factor_x(&dev->sd, &ctrl->val); 607 break; 608 case V4L2_CID_BIN_FACTOR_VERT: 609 ret = gc0310_g_bin_factor_y(&dev->sd, &ctrl->val); 610 break; 611 default: 612 ret = -EINVAL; 613 } 614 615 return ret; 616 } 617 618 static const struct v4l2_ctrl_ops ctrl_ops = { 619 .s_ctrl = gc0310_s_ctrl, 620 .g_volatile_ctrl = gc0310_g_volatile_ctrl 621 }; 622 623 struct v4l2_ctrl_config gc0310_controls[] = { 624 { 625 .ops = &ctrl_ops, 626 .id = V4L2_CID_EXPOSURE_ABSOLUTE, 627 .type = V4L2_CTRL_TYPE_INTEGER, 628 .name = "exposure", 629 .min = 0x0, 630 .max = 0xffff, 631 .step = 0x01, 632 .def = 0x00, 633 .flags = 0, 634 }, 635 { 636 .ops = &ctrl_ops, 637 .id = V4L2_CID_VFLIP, 638 .type = V4L2_CTRL_TYPE_BOOLEAN, 639 .name = "Flip", 640 .min = 0, 641 .max = 1, 642 .step = 1, 643 .def = 0, 644 }, 645 { 646 .ops = &ctrl_ops, 647 .id = V4L2_CID_HFLIP, 648 .type = V4L2_CTRL_TYPE_BOOLEAN, 649 .name = "Mirror", 650 .min = 0, 651 .max = 1, 652 .step = 1, 653 .def = 0, 654 }, 655 { 656 .ops = &ctrl_ops, 657 .id = V4L2_CID_FOCAL_ABSOLUTE, 658 .type = V4L2_CTRL_TYPE_INTEGER, 659 .name = "focal length", 660 .min = GC0310_FOCAL_LENGTH_DEFAULT, 661 .max = GC0310_FOCAL_LENGTH_DEFAULT, 662 .step = 0x01, 663 .def = GC0310_FOCAL_LENGTH_DEFAULT, 664 .flags = 0, 665 }, 666 { 667 .ops = &ctrl_ops, 668 .id = V4L2_CID_FNUMBER_ABSOLUTE, 669 .type = V4L2_CTRL_TYPE_INTEGER, 670 .name = "f-number", 671 .min = GC0310_F_NUMBER_DEFAULT, 672 .max = GC0310_F_NUMBER_DEFAULT, 673 .step = 0x01, 674 .def = GC0310_F_NUMBER_DEFAULT, 675 .flags = 0, 676 }, 677 { 678 .ops = &ctrl_ops, 679 .id = V4L2_CID_FNUMBER_RANGE, 680 .type = V4L2_CTRL_TYPE_INTEGER, 681 .name = "f-number range", 682 .min = GC0310_F_NUMBER_RANGE, 683 .max = GC0310_F_NUMBER_RANGE, 684 .step = 0x01, 685 .def = GC0310_F_NUMBER_RANGE, 686 .flags = 0, 687 }, 688 { 689 .ops = &ctrl_ops, 690 .id = V4L2_CID_BIN_FACTOR_HORZ, 691 .type = V4L2_CTRL_TYPE_INTEGER, 692 .name = "horizontal binning factor", 693 .min = 0, 694 .max = GC0310_BIN_FACTOR_MAX, 695 .step = 1, 696 .def = 0, 697 .flags = 0, 698 }, 699 { 700 .ops = &ctrl_ops, 701 .id = V4L2_CID_BIN_FACTOR_VERT, 702 .type = V4L2_CTRL_TYPE_INTEGER, 703 .name = "vertical binning factor", 704 .min = 0, 705 .max = GC0310_BIN_FACTOR_MAX, 706 .step = 1, 707 .def = 0, 708 .flags = 0, 709 }, 710 }; 711 712 static int gc0310_init(struct v4l2_subdev *sd) 713 { 714 int ret; 715 struct i2c_client *client = v4l2_get_subdevdata(sd); 716 struct gc0310_device *dev = to_gc0310_sensor(sd); 717 718 pr_info("%s S\n", __func__); 719 mutex_lock(&dev->input_lock); 720 721 /* set inital registers */ 722 ret = gc0310_write_reg_array(client, gc0310_reset_register); 723 724 /* restore settings */ 725 gc0310_res = gc0310_res_preview; 726 N_RES = N_RES_PREVIEW; 727 728 mutex_unlock(&dev->input_lock); 729 730 pr_info("%s E\n", __func__); 731 return 0; 732 } 733 734 static int power_ctrl(struct v4l2_subdev *sd, bool flag) 735 { 736 int ret = 0; 737 struct gc0310_device *dev = to_gc0310_sensor(sd); 738 if (!dev || !dev->platform_data) 739 return -ENODEV; 740 741 /* Non-gmin platforms use the legacy callback */ 742 if (dev->platform_data->power_ctrl) 743 return dev->platform_data->power_ctrl(sd, flag); 744 745 if (flag) { 746 /* The upstream module driver (written to Crystal 747 * Cove) had this logic to pulse the rails low first. 748 * This appears to break things on the MRD7 with the 749 * X-Powers PMIC... 750 * 751 * ret = dev->platform_data->v1p8_ctrl(sd, 0); 752 * ret |= dev->platform_data->v2p8_ctrl(sd, 0); 753 * mdelay(50); 754 */ 755 ret |= dev->platform_data->v1p8_ctrl(sd, 1); 756 ret |= dev->platform_data->v2p8_ctrl(sd, 1); 757 usleep_range(10000, 15000); 758 } 759 760 if (!flag || ret) { 761 ret |= dev->platform_data->v1p8_ctrl(sd, 0); 762 ret |= dev->platform_data->v2p8_ctrl(sd, 0); 763 } 764 return ret; 765 } 766 767 static int gpio_ctrl(struct v4l2_subdev *sd, bool flag) 768 { 769 int ret; 770 struct gc0310_device *dev = to_gc0310_sensor(sd); 771 772 if (!dev || !dev->platform_data) 773 return -ENODEV; 774 775 /* Non-gmin platforms use the legacy callback */ 776 if (dev->platform_data->gpio_ctrl) 777 return dev->platform_data->gpio_ctrl(sd, flag); 778 779 /* GPIO0 == "reset" (active low), GPIO1 == "power down" */ 780 if (flag) { 781 /* Pulse reset, then release power down */ 782 ret = dev->platform_data->gpio0_ctrl(sd, 0); 783 usleep_range(5000, 10000); 784 ret |= dev->platform_data->gpio0_ctrl(sd, 1); 785 usleep_range(10000, 15000); 786 ret |= dev->platform_data->gpio1_ctrl(sd, 0); 787 usleep_range(10000, 15000); 788 } else { 789 ret = dev->platform_data->gpio1_ctrl(sd, 1); 790 ret |= dev->platform_data->gpio0_ctrl(sd, 0); 791 } 792 return ret; 793 } 794 795 796 static int power_down(struct v4l2_subdev *sd); 797 798 static int power_up(struct v4l2_subdev *sd) 799 { 800 struct gc0310_device *dev = to_gc0310_sensor(sd); 801 struct i2c_client *client = v4l2_get_subdevdata(sd); 802 int ret; 803 804 pr_info("%s S\n", __func__); 805 if (!dev->platform_data) { 806 dev_err(&client->dev, 807 "no camera_sensor_platform_data"); 808 return -ENODEV; 809 } 810 811 /* power control */ 812 ret = power_ctrl(sd, 1); 813 if (ret) 814 goto fail_power; 815 816 /* flis clock control */ 817 ret = dev->platform_data->flisclk_ctrl(sd, 1); 818 if (ret) 819 goto fail_clk; 820 821 /* gpio ctrl */ 822 ret = gpio_ctrl(sd, 1); 823 if (ret) { 824 ret = gpio_ctrl(sd, 1); 825 if (ret) 826 goto fail_gpio; 827 } 828 829 msleep(100); 830 831 pr_info("%s E\n", __func__); 832 return 0; 833 834 fail_gpio: 835 dev->platform_data->flisclk_ctrl(sd, 0); 836 fail_clk: 837 power_ctrl(sd, 0); 838 fail_power: 839 dev_err(&client->dev, "sensor power-up failed\n"); 840 841 return ret; 842 } 843 844 static int power_down(struct v4l2_subdev *sd) 845 { 846 struct gc0310_device *dev = to_gc0310_sensor(sd); 847 struct i2c_client *client = v4l2_get_subdevdata(sd); 848 int ret = 0; 849 850 if (!dev->platform_data) { 851 dev_err(&client->dev, 852 "no camera_sensor_platform_data"); 853 return -ENODEV; 854 } 855 856 /* gpio ctrl */ 857 ret = gpio_ctrl(sd, 0); 858 if (ret) { 859 ret = gpio_ctrl(sd, 0); 860 if (ret) 861 dev_err(&client->dev, "gpio failed 2\n"); 862 } 863 864 ret = dev->platform_data->flisclk_ctrl(sd, 0); 865 if (ret) 866 dev_err(&client->dev, "flisclk failed\n"); 867 868 /* power control */ 869 ret = power_ctrl(sd, 0); 870 if (ret) 871 dev_err(&client->dev, "vprog failed.\n"); 872 873 return ret; 874 } 875 876 static int gc0310_s_power(struct v4l2_subdev *sd, int on) 877 { 878 int ret; 879 if (on == 0) 880 return power_down(sd); 881 else { 882 ret = power_up(sd); 883 if (!ret) 884 return gc0310_init(sd); 885 } 886 return ret; 887 } 888 889 /* 890 * distance - calculate the distance 891 * @res: resolution 892 * @w: width 893 * @h: height 894 * 895 * Get the gap between resolution and w/h. 896 * res->width/height smaller than w/h wouldn't be considered. 897 * Returns the value of gap or -1 if fail. 898 */ 899 #define LARGEST_ALLOWED_RATIO_MISMATCH 800 900 static int distance(struct gc0310_resolution *res, u32 w, u32 h) 901 { 902 unsigned int w_ratio = (res->width << 13) / w; 903 unsigned int h_ratio; 904 int match; 905 906 if (h == 0) 907 return -1; 908 h_ratio = (res->height << 13) / h; 909 if (h_ratio == 0) 910 return -1; 911 match = abs(((w_ratio << 13) / h_ratio) - ((int)8192)); 912 913 if ((w_ratio < (int)8192) || (h_ratio < (int)8192) || 914 (match > LARGEST_ALLOWED_RATIO_MISMATCH)) 915 return -1; 916 917 return w_ratio + h_ratio; 918 } 919 920 /* Return the nearest higher resolution index */ 921 static int nearest_resolution_index(int w, int h) 922 { 923 int i; 924 int idx = -1; 925 int dist; 926 int min_dist = INT_MAX; 927 struct gc0310_resolution *tmp_res = NULL; 928 929 for (i = 0; i < N_RES; i++) { 930 tmp_res = &gc0310_res[i]; 931 dist = distance(tmp_res, w, h); 932 if (dist == -1) 933 continue; 934 if (dist < min_dist) { 935 min_dist = dist; 936 idx = i; 937 } 938 } 939 940 return idx; 941 } 942 943 static int get_resolution_index(int w, int h) 944 { 945 int i; 946 947 for (i = 0; i < N_RES; i++) { 948 if (w != gc0310_res[i].width) 949 continue; 950 if (h != gc0310_res[i].height) 951 continue; 952 953 return i; 954 } 955 956 return -1; 957 } 958 959 960 /* TODO: remove it. */ 961 static int startup(struct v4l2_subdev *sd) 962 { 963 struct gc0310_device *dev = to_gc0310_sensor(sd); 964 struct i2c_client *client = v4l2_get_subdevdata(sd); 965 int ret = 0; 966 967 pr_info("%s S\n", __func__); 968 969 ret = gc0310_write_reg_array(client, gc0310_res[dev->fmt_idx].regs); 970 if (ret) { 971 dev_err(&client->dev, "gc0310 write register err.\n"); 972 return ret; 973 } 974 975 pr_info("%s E\n", __func__); 976 return ret; 977 } 978 979 static int gc0310_set_fmt(struct v4l2_subdev *sd, 980 struct v4l2_subdev_pad_config *cfg, 981 struct v4l2_subdev_format *format) 982 { 983 struct v4l2_mbus_framefmt *fmt = &format->format; 984 struct gc0310_device *dev = to_gc0310_sensor(sd); 985 struct i2c_client *client = v4l2_get_subdevdata(sd); 986 struct camera_mipi_info *gc0310_info = NULL; 987 int ret = 0; 988 int idx = 0; 989 pr_info("%s S\n", __func__); 990 991 if (format->pad) 992 return -EINVAL; 993 994 if (!fmt) 995 return -EINVAL; 996 997 gc0310_info = v4l2_get_subdev_hostdata(sd); 998 if (!gc0310_info) 999 return -EINVAL; 1000 1001 mutex_lock(&dev->input_lock); 1002 1003 idx = nearest_resolution_index(fmt->width, fmt->height); 1004 if (idx == -1) { 1005 /* return the largest resolution */ 1006 fmt->width = gc0310_res[N_RES - 1].width; 1007 fmt->height = gc0310_res[N_RES - 1].height; 1008 } else { 1009 fmt->width = gc0310_res[idx].width; 1010 fmt->height = gc0310_res[idx].height; 1011 } 1012 fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8; 1013 1014 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 1015 cfg->try_fmt = *fmt; 1016 mutex_unlock(&dev->input_lock); 1017 return 0; 1018 } 1019 1020 dev->fmt_idx = get_resolution_index(fmt->width, fmt->height); 1021 if (dev->fmt_idx == -1) { 1022 dev_err(&client->dev, "get resolution fail\n"); 1023 mutex_unlock(&dev->input_lock); 1024 return -EINVAL; 1025 } 1026 1027 printk("%s: before gc0310_write_reg_array %s\n", __FUNCTION__, 1028 gc0310_res[dev->fmt_idx].desc); 1029 ret = startup(sd); 1030 if (ret) { 1031 dev_err(&client->dev, "gc0310 startup err\n"); 1032 goto err; 1033 } 1034 1035 ret = gc0310_get_intg_factor(client, gc0310_info, 1036 &gc0310_res[dev->fmt_idx]); 1037 if (ret) { 1038 dev_err(&client->dev, "failed to get integration_factor\n"); 1039 goto err; 1040 } 1041 1042 pr_info("%s E\n", __func__); 1043 err: 1044 mutex_unlock(&dev->input_lock); 1045 return ret; 1046 } 1047 1048 static int gc0310_get_fmt(struct v4l2_subdev *sd, 1049 struct v4l2_subdev_pad_config *cfg, 1050 struct v4l2_subdev_format *format) 1051 { 1052 struct v4l2_mbus_framefmt *fmt = &format->format; 1053 struct gc0310_device *dev = to_gc0310_sensor(sd); 1054 1055 if (format->pad) 1056 return -EINVAL; 1057 1058 if (!fmt) 1059 return -EINVAL; 1060 1061 fmt->width = gc0310_res[dev->fmt_idx].width; 1062 fmt->height = gc0310_res[dev->fmt_idx].height; 1063 fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8; 1064 1065 return 0; 1066 } 1067 1068 static int gc0310_detect(struct i2c_client *client) 1069 { 1070 struct i2c_adapter *adapter = client->adapter; 1071 u8 high, low; 1072 int ret; 1073 u16 id; 1074 1075 pr_info("%s S\n", __func__); 1076 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) 1077 return -ENODEV; 1078 1079 ret = gc0310_read_reg(client, GC0310_8BIT, 1080 GC0310_SC_CMMN_CHIP_ID_H, &high); 1081 if (ret) { 1082 dev_err(&client->dev, "read sensor_id_high failed\n"); 1083 return -ENODEV; 1084 } 1085 ret = gc0310_read_reg(client, GC0310_8BIT, 1086 GC0310_SC_CMMN_CHIP_ID_L, &low); 1087 if (ret) { 1088 dev_err(&client->dev, "read sensor_id_low failed\n"); 1089 return -ENODEV; 1090 } 1091 id = ((((u16) high) << 8) | (u16) low); 1092 pr_info("sensor ID = 0x%x\n", id); 1093 1094 if (id != GC0310_ID) { 1095 dev_err(&client->dev, "sensor ID error, read id = 0x%x, target id = 0x%x\n", id, GC0310_ID); 1096 return -ENODEV; 1097 } 1098 1099 dev_dbg(&client->dev, "detect gc0310 success\n"); 1100 1101 pr_info("%s E\n", __func__); 1102 1103 return 0; 1104 } 1105 1106 static int gc0310_s_stream(struct v4l2_subdev *sd, int enable) 1107 { 1108 struct gc0310_device *dev = to_gc0310_sensor(sd); 1109 struct i2c_client *client = v4l2_get_subdevdata(sd); 1110 int ret; 1111 1112 pr_info("%s S enable=%d\n", __func__, enable); 1113 mutex_lock(&dev->input_lock); 1114 1115 if (enable) { 1116 /* enable per frame MIPI and sensor ctrl reset */ 1117 ret = gc0310_write_reg(client, GC0310_8BIT, 1118 0xFE, 0x30); 1119 if (ret) { 1120 mutex_unlock(&dev->input_lock); 1121 return ret; 1122 } 1123 } 1124 1125 ret = gc0310_write_reg(client, GC0310_8BIT, 1126 GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_3); 1127 if (ret) { 1128 mutex_unlock(&dev->input_lock); 1129 return ret; 1130 } 1131 1132 ret = gc0310_write_reg(client, GC0310_8BIT, GC0310_SW_STREAM, 1133 enable ? GC0310_START_STREAMING : 1134 GC0310_STOP_STREAMING); 1135 if (ret) { 1136 mutex_unlock(&dev->input_lock); 1137 return ret; 1138 } 1139 1140 ret = gc0310_write_reg(client, GC0310_8BIT, 1141 GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_0); 1142 if (ret) { 1143 mutex_unlock(&dev->input_lock); 1144 return ret; 1145 } 1146 1147 mutex_unlock(&dev->input_lock); 1148 pr_info("%s E\n", __func__); 1149 return ret; 1150 } 1151 1152 1153 static int gc0310_s_config(struct v4l2_subdev *sd, 1154 int irq, void *platform_data) 1155 { 1156 struct gc0310_device *dev = to_gc0310_sensor(sd); 1157 struct i2c_client *client = v4l2_get_subdevdata(sd); 1158 int ret = 0; 1159 1160 pr_info("%s S\n", __func__); 1161 if (!platform_data) 1162 return -ENODEV; 1163 1164 dev->platform_data = 1165 (struct camera_sensor_platform_data *)platform_data; 1166 1167 mutex_lock(&dev->input_lock); 1168 if (dev->platform_data->platform_init) { 1169 ret = dev->platform_data->platform_init(client); 1170 if (ret) { 1171 dev_err(&client->dev, "platform init err\n"); 1172 goto platform_init_failed; 1173 } 1174 } 1175 /* power off the module, then power on it in future 1176 * as first power on by board may not fulfill the 1177 * power on sequqence needed by the module 1178 */ 1179 ret = power_down(sd); 1180 if (ret) { 1181 dev_err(&client->dev, "gc0310 power-off err.\n"); 1182 goto fail_power_off; 1183 } 1184 1185 ret = power_up(sd); 1186 if (ret) { 1187 dev_err(&client->dev, "gc0310 power-up err.\n"); 1188 goto fail_power_on; 1189 } 1190 1191 ret = dev->platform_data->csi_cfg(sd, 1); 1192 if (ret) 1193 goto fail_csi_cfg; 1194 1195 /* config & detect sensor */ 1196 ret = gc0310_detect(client); 1197 if (ret) { 1198 dev_err(&client->dev, "gc0310_detect err s_config.\n"); 1199 goto fail_csi_cfg; 1200 } 1201 1202 /* turn off sensor, after probed */ 1203 ret = power_down(sd); 1204 if (ret) { 1205 dev_err(&client->dev, "gc0310 power-off err.\n"); 1206 goto fail_csi_cfg; 1207 } 1208 mutex_unlock(&dev->input_lock); 1209 1210 pr_info("%s E\n", __func__); 1211 return 0; 1212 1213 fail_csi_cfg: 1214 dev->platform_data->csi_cfg(sd, 0); 1215 fail_power_on: 1216 power_down(sd); 1217 dev_err(&client->dev, "sensor power-gating failed\n"); 1218 fail_power_off: 1219 if (dev->platform_data->platform_deinit) 1220 dev->platform_data->platform_deinit(); 1221 platform_init_failed: 1222 mutex_unlock(&dev->input_lock); 1223 return ret; 1224 } 1225 1226 static int gc0310_g_parm(struct v4l2_subdev *sd, 1227 struct v4l2_streamparm *param) 1228 { 1229 struct gc0310_device *dev = to_gc0310_sensor(sd); 1230 struct i2c_client *client = v4l2_get_subdevdata(sd); 1231 1232 if (!param) 1233 return -EINVAL; 1234 1235 if (param->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { 1236 dev_err(&client->dev, "unsupported buffer type.\n"); 1237 return -EINVAL; 1238 } 1239 1240 memset(param, 0, sizeof(*param)); 1241 param->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1242 1243 if (dev->fmt_idx >= 0 && dev->fmt_idx < N_RES) { 1244 param->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; 1245 param->parm.capture.timeperframe.numerator = 1; 1246 param->parm.capture.capturemode = dev->run_mode; 1247 param->parm.capture.timeperframe.denominator = 1248 gc0310_res[dev->fmt_idx].fps; 1249 } 1250 return 0; 1251 } 1252 1253 static int gc0310_s_parm(struct v4l2_subdev *sd, 1254 struct v4l2_streamparm *param) 1255 { 1256 struct gc0310_device *dev = to_gc0310_sensor(sd); 1257 dev->run_mode = param->parm.capture.capturemode; 1258 1259 mutex_lock(&dev->input_lock); 1260 switch (dev->run_mode) { 1261 case CI_MODE_VIDEO: 1262 gc0310_res = gc0310_res_video; 1263 N_RES = N_RES_VIDEO; 1264 break; 1265 case CI_MODE_STILL_CAPTURE: 1266 gc0310_res = gc0310_res_still; 1267 N_RES = N_RES_STILL; 1268 break; 1269 default: 1270 gc0310_res = gc0310_res_preview; 1271 N_RES = N_RES_PREVIEW; 1272 } 1273 mutex_unlock(&dev->input_lock); 1274 return 0; 1275 } 1276 1277 static int gc0310_g_frame_interval(struct v4l2_subdev *sd, 1278 struct v4l2_subdev_frame_interval *interval) 1279 { 1280 struct gc0310_device *dev = to_gc0310_sensor(sd); 1281 1282 interval->interval.numerator = 1; 1283 interval->interval.denominator = gc0310_res[dev->fmt_idx].fps; 1284 1285 return 0; 1286 } 1287 1288 static int gc0310_enum_mbus_code(struct v4l2_subdev *sd, 1289 struct v4l2_subdev_pad_config *cfg, 1290 struct v4l2_subdev_mbus_code_enum *code) 1291 { 1292 if (code->index >= MAX_FMTS) 1293 return -EINVAL; 1294 1295 code->code = MEDIA_BUS_FMT_SGRBG8_1X8; 1296 return 0; 1297 } 1298 1299 static int gc0310_enum_frame_size(struct v4l2_subdev *sd, 1300 struct v4l2_subdev_pad_config *cfg, 1301 struct v4l2_subdev_frame_size_enum *fse) 1302 { 1303 int index = fse->index; 1304 1305 if (index >= N_RES) 1306 return -EINVAL; 1307 1308 fse->min_width = gc0310_res[index].width; 1309 fse->min_height = gc0310_res[index].height; 1310 fse->max_width = gc0310_res[index].width; 1311 fse->max_height = gc0310_res[index].height; 1312 1313 return 0; 1314 1315 } 1316 1317 1318 static int gc0310_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) 1319 { 1320 struct gc0310_device *dev = to_gc0310_sensor(sd); 1321 1322 mutex_lock(&dev->input_lock); 1323 *frames = gc0310_res[dev->fmt_idx].skip_frames; 1324 mutex_unlock(&dev->input_lock); 1325 1326 return 0; 1327 } 1328 1329 static const struct v4l2_subdev_sensor_ops gc0310_sensor_ops = { 1330 .g_skip_frames = gc0310_g_skip_frames, 1331 }; 1332 1333 static const struct v4l2_subdev_video_ops gc0310_video_ops = { 1334 .s_stream = gc0310_s_stream, 1335 .g_parm = gc0310_g_parm, 1336 .s_parm = gc0310_s_parm, 1337 .g_frame_interval = gc0310_g_frame_interval, 1338 }; 1339 1340 static const struct v4l2_subdev_core_ops gc0310_core_ops = { 1341 .s_power = gc0310_s_power, 1342 .ioctl = gc0310_ioctl, 1343 }; 1344 1345 static const struct v4l2_subdev_pad_ops gc0310_pad_ops = { 1346 .enum_mbus_code = gc0310_enum_mbus_code, 1347 .enum_frame_size = gc0310_enum_frame_size, 1348 .get_fmt = gc0310_get_fmt, 1349 .set_fmt = gc0310_set_fmt, 1350 }; 1351 1352 static const struct v4l2_subdev_ops gc0310_ops = { 1353 .core = &gc0310_core_ops, 1354 .video = &gc0310_video_ops, 1355 .pad = &gc0310_pad_ops, 1356 .sensor = &gc0310_sensor_ops, 1357 }; 1358 1359 static int gc0310_remove(struct i2c_client *client) 1360 { 1361 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1362 struct gc0310_device *dev = to_gc0310_sensor(sd); 1363 dev_dbg(&client->dev, "gc0310_remove...\n"); 1364 1365 if (dev->platform_data->platform_deinit) 1366 dev->platform_data->platform_deinit(); 1367 1368 dev->platform_data->csi_cfg(sd, 0); 1369 1370 v4l2_device_unregister_subdev(sd); 1371 media_entity_cleanup(&dev->sd.entity); 1372 v4l2_ctrl_handler_free(&dev->ctrl_handler); 1373 kfree(dev); 1374 1375 return 0; 1376 } 1377 1378 static int gc0310_probe(struct i2c_client *client, 1379 const struct i2c_device_id *id) 1380 { 1381 struct gc0310_device *dev; 1382 int ret; 1383 void *pdata; 1384 unsigned int i; 1385 1386 pr_info("%s S\n", __func__); 1387 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 1388 if (!dev) { 1389 dev_err(&client->dev, "out of memory\n"); 1390 return -ENOMEM; 1391 } 1392 1393 mutex_init(&dev->input_lock); 1394 1395 dev->fmt_idx = 0; 1396 v4l2_i2c_subdev_init(&(dev->sd), client, &gc0310_ops); 1397 1398 if (ACPI_COMPANION(&client->dev)) 1399 pdata = gmin_camera_platform_data(&dev->sd, 1400 ATOMISP_INPUT_FORMAT_RAW_8, 1401 atomisp_bayer_order_grbg); 1402 else 1403 pdata = client->dev.platform_data; 1404 1405 if (!pdata) { 1406 ret = -EINVAL; 1407 goto out_free; 1408 } 1409 1410 ret = gc0310_s_config(&dev->sd, client->irq, pdata); 1411 if (ret) 1412 goto out_free; 1413 1414 ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA); 1415 if (ret) 1416 goto out_free; 1417 1418 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1419 dev->pad.flags = MEDIA_PAD_FL_SOURCE; 1420 dev->format.code = MEDIA_BUS_FMT_SGRBG8_1X8; 1421 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1422 ret = 1423 v4l2_ctrl_handler_init(&dev->ctrl_handler, 1424 ARRAY_SIZE(gc0310_controls)); 1425 if (ret) { 1426 gc0310_remove(client); 1427 return ret; 1428 } 1429 1430 for (i = 0; i < ARRAY_SIZE(gc0310_controls); i++) 1431 v4l2_ctrl_new_custom(&dev->ctrl_handler, &gc0310_controls[i], 1432 NULL); 1433 1434 if (dev->ctrl_handler.error) { 1435 gc0310_remove(client); 1436 return dev->ctrl_handler.error; 1437 } 1438 1439 /* Use same lock for controls as for everything else. */ 1440 dev->ctrl_handler.lock = &dev->input_lock; 1441 dev->sd.ctrl_handler = &dev->ctrl_handler; 1442 1443 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); 1444 if (ret) 1445 gc0310_remove(client); 1446 1447 pr_info("%s E\n", __func__); 1448 return ret; 1449 out_free: 1450 v4l2_device_unregister_subdev(&dev->sd); 1451 kfree(dev); 1452 return ret; 1453 } 1454 1455 static const struct acpi_device_id gc0310_acpi_match[] = { 1456 {"XXGC0310"}, 1457 {"INT0310"}, 1458 {}, 1459 }; 1460 1461 MODULE_DEVICE_TABLE(acpi, gc0310_acpi_match); 1462 1463 MODULE_DEVICE_TABLE(i2c, gc0310_id); 1464 static struct i2c_driver gc0310_driver = { 1465 .driver = { 1466 .name = GC0310_NAME, 1467 .acpi_match_table = ACPI_PTR(gc0310_acpi_match), 1468 }, 1469 .probe = gc0310_probe, 1470 .remove = gc0310_remove, 1471 .id_table = gc0310_id, 1472 }; 1473 1474 static int init_gc0310(void) 1475 { 1476 return i2c_add_driver(&gc0310_driver); 1477 } 1478 1479 static void exit_gc0310(void) 1480 { 1481 1482 i2c_del_driver(&gc0310_driver); 1483 } 1484 1485 module_init(init_gc0310); 1486 module_exit(exit_gc0310); 1487 1488 MODULE_AUTHOR("Lai, Angie <angie.lai@intel.com>"); 1489 MODULE_DESCRIPTION("A low-level driver for GalaxyCore GC0310 sensors"); 1490 MODULE_LICENSE("GPL"); 1491