1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Support for GalaxyCore GC0310 VGA camera sensor. 4 * 5 * Copyright (c) 2013 Intel Corporation. All Rights Reserved. 6 * Copyright (c) 2023 Hans de Goede <hdegoede@redhat.com> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License version 10 * 2 as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 */ 18 19 #include <linux/delay.h> 20 #include <linux/errno.h> 21 #include <linux/gpio/consumer.h> 22 #include <linux/i2c.h> 23 #include <linux/kernel.h> 24 #include <linux/module.h> 25 #include <linux/pm_runtime.h> 26 #include <linux/string.h> 27 #include <linux/types.h> 28 29 #include <media/v4l2-ctrls.h> 30 #include <media/v4l2-device.h> 31 32 #include "../include/linux/atomisp_gmin_platform.h" 33 34 #define GC0310_NATIVE_WIDTH 656 35 #define GC0310_NATIVE_HEIGHT 496 36 37 #define GC0310_FPS 30 38 #define GC0310_SKIP_FRAMES 3 39 40 #define GC0310_FOCAL_LENGTH_NUM 278 /* 2.78mm */ 41 42 #define GC0310_ID 0xa310 43 44 #define GC0310_RESET_RELATED 0xFE 45 #define GC0310_REGISTER_PAGE_0 0x0 46 #define GC0310_REGISTER_PAGE_3 0x3 47 48 /* 49 * GC0310 System control registers 50 */ 51 #define GC0310_SW_STREAM 0x10 52 53 #define GC0310_SC_CMMN_CHIP_ID_H 0xf0 54 #define GC0310_SC_CMMN_CHIP_ID_L 0xf1 55 56 #define GC0310_AEC_PK_EXPO_H 0x03 57 #define GC0310_AEC_PK_EXPO_L 0x04 58 #define GC0310_AGC_ADJ 0x48 59 #define GC0310_DGC_ADJ 0x71 60 #define GC0310_GROUP_ACCESS 0x3208 61 62 #define GC0310_H_CROP_START_H 0x09 63 #define GC0310_H_CROP_START_L 0x0A 64 #define GC0310_V_CROP_START_H 0x0B 65 #define GC0310_V_CROP_START_L 0x0C 66 #define GC0310_H_OUTSIZE_H 0x0F 67 #define GC0310_H_OUTSIZE_L 0x10 68 #define GC0310_V_OUTSIZE_H 0x0D 69 #define GC0310_V_OUTSIZE_L 0x0E 70 #define GC0310_H_BLANKING_H 0x05 71 #define GC0310_H_BLANKING_L 0x06 72 #define GC0310_V_BLANKING_H 0x07 73 #define GC0310_V_BLANKING_L 0x08 74 #define GC0310_SH_DELAY 0x11 75 76 #define GC0310_START_STREAMING 0x94 /* 8-bit enable */ 77 #define GC0310_STOP_STREAMING 0x0 /* 8-bit disable */ 78 79 #define to_gc0310_sensor(x) container_of(x, struct gc0310_device, sd) 80 81 struct gc0310_device { 82 struct v4l2_subdev sd; 83 struct media_pad pad; 84 /* Protect against concurrent changes to controls */ 85 struct mutex input_lock; 86 bool is_streaming; 87 88 struct gpio_desc *reset; 89 struct gpio_desc *powerdown; 90 91 struct gc0310_mode { 92 struct v4l2_mbus_framefmt fmt; 93 } mode; 94 95 struct gc0310_ctrls { 96 struct v4l2_ctrl_handler handler; 97 struct v4l2_ctrl *exposure; 98 struct v4l2_ctrl *gain; 99 } ctrls; 100 }; 101 102 struct gc0310_reg { 103 u8 reg; 104 u8 val; 105 }; 106 107 static const struct gc0310_reg gc0310_reset_register[] = { 108 /* System registers */ 109 { 0xfe, 0xf0 }, 110 { 0xfe, 0xf0 }, 111 { 0xfe, 0x00 }, 112 113 { 0xfc, 0x0e }, /* 4e */ 114 { 0xfc, 0x0e }, /* 16//4e // [0]apwd [6]regf_clk_gate */ 115 { 0xf2, 0x80 }, /* sync output */ 116 { 0xf3, 0x00 }, /* 1f//01 data output */ 117 { 0xf7, 0x33 }, /* f9 */ 118 { 0xf8, 0x05 }, /* 00 */ 119 { 0xf9, 0x0e }, /* 0x8e //0f */ 120 { 0xfa, 0x11 }, 121 122 /* MIPI */ 123 { 0xfe, 0x03 }, 124 { 0x01, 0x03 }, /* mipi 1lane */ 125 { 0x02, 0x22 }, /* 0x33 */ 126 { 0x03, 0x94 }, 127 { 0x04, 0x01 }, /* fifo_prog */ 128 { 0x05, 0x00 }, /* fifo_prog */ 129 { 0x06, 0x80 }, /* b0 //YUV ISP data */ 130 { 0x11, 0x2a }, /* 1e //LDI set YUV422 */ 131 { 0x12, 0x90 }, /* 00 //04 //00 //04//00 //LWC[7:0] */ 132 { 0x13, 0x02 }, /* 05 //05 //LWC[15:8] */ 133 { 0x15, 0x12 }, /* 0x10 //DPHYY_MODE read_ready */ 134 { 0x17, 0x01 }, 135 { 0x40, 0x08 }, 136 { 0x41, 0x00 }, 137 { 0x42, 0x00 }, 138 { 0x43, 0x00 }, 139 { 0x21, 0x02 }, /* 0x01 */ 140 { 0x22, 0x02 }, /* 0x01 */ 141 { 0x23, 0x01 }, /* 0x05 //Nor:0x05 DOU:0x06 */ 142 { 0x29, 0x00 }, 143 { 0x2A, 0x25 }, /* 0x05 //data zero 0x7a de */ 144 { 0x2B, 0x02 }, 145 146 { 0xfe, 0x00 }, 147 148 /* CISCTL */ 149 { 0x00, 0x2f }, /* 2f//0f//02//01 */ 150 { 0x01, 0x0f }, /* 06 */ 151 { 0x02, 0x04 }, 152 { 0x4f, 0x00 }, /* AEC 0FF */ 153 { 0x03, 0x01 }, /* 0x03 //04 */ 154 { 0x04, 0xc0 }, /* 0xe8 //58 */ 155 { 0x05, 0x00 }, 156 { 0x06, 0xb2 }, /* 0x0a //HB */ 157 { 0x07, 0x00 }, 158 { 0x08, 0x0c }, /* 0x89 //VB */ 159 { 0x09, 0x00 }, /* row start */ 160 { 0x0a, 0x00 }, 161 { 0x0b, 0x00 }, /* col start */ 162 { 0x0c, 0x00 }, 163 { 0x0d, 0x01 }, /* height */ 164 { 0x0e, 0xf2 }, /* 0xf7 //height */ 165 { 0x0f, 0x02 }, /* width */ 166 { 0x10, 0x94 }, /* 0xa0 //height */ 167 { 0x17, 0x14 }, 168 { 0x18, 0x1a }, /* 0a//[4]double reset */ 169 { 0x19, 0x14 }, /* AD pipeline */ 170 { 0x1b, 0x48 }, 171 { 0x1e, 0x6b }, /* 3b//col bias */ 172 { 0x1f, 0x28 }, /* 20//00//08//txlow */ 173 { 0x20, 0x89 }, /* 88//0c//[3:2]DA15 */ 174 { 0x21, 0x49 }, /* 48//[3] txhigh */ 175 { 0x22, 0xb0 }, 176 { 0x23, 0x04 }, /* [1:0]vcm_r */ 177 { 0x24, 0x16 }, /* 15 */ 178 { 0x34, 0x20 }, /* [6:4] rsg high//range */ 179 180 /* BLK */ 181 { 0x26, 0x23 }, /* [1]dark_current_en [0]offset_en */ 182 { 0x28, 0xff }, /* BLK_limie_value */ 183 { 0x29, 0x00 }, /* global offset */ 184 { 0x33, 0x18 }, /* offset_ratio */ 185 { 0x37, 0x20 }, /* dark_current_ratio */ 186 { 0x2a, 0x00 }, 187 { 0x2b, 0x00 }, 188 { 0x2c, 0x00 }, 189 { 0x2d, 0x00 }, 190 { 0x2e, 0x00 }, 191 { 0x2f, 0x00 }, 192 { 0x30, 0x00 }, 193 { 0x31, 0x00 }, 194 { 0x47, 0x80 }, /* a7 */ 195 { 0x4e, 0x66 }, /* select_row */ 196 { 0xa8, 0x02 }, /* win_width_dark, same with crop_win_width */ 197 { 0xa9, 0x80 }, 198 199 /* ISP */ 200 { 0x40, 0x06 }, /* 0xff //ff //48 */ 201 { 0x41, 0x00 }, /* 0x21 //00//[0]curve_en */ 202 { 0x42, 0x04 }, /* 0xcf //0a//[1]awn_en */ 203 { 0x44, 0x18 }, /* 0x18 //02 */ 204 { 0x46, 0x02 }, /* 0x03 //sync */ 205 { 0x49, 0x03 }, 206 { 0x4c, 0x20 }, /* 00[5]pretect exp */ 207 { 0x50, 0x01 }, /* crop enable */ 208 { 0x51, 0x00 }, 209 { 0x52, 0x00 }, 210 { 0x53, 0x00 }, 211 { 0x54, 0x01 }, 212 { 0x55, 0x01 }, /* crop window height */ 213 { 0x56, 0xf0 }, 214 { 0x57, 0x02 }, /* crop window width */ 215 { 0x58, 0x90 }, 216 217 /* Gain */ 218 { 0x70, 0x70 }, /* 70 //80//global gain */ 219 { 0x71, 0x20 }, /* pregain gain */ 220 { 0x72, 0x40 }, /* post gain */ 221 { 0x5a, 0x84 }, /* 84//analog gain 0 */ 222 { 0x5b, 0xc9 }, /* c9 */ 223 { 0x5c, 0xed }, /* ed//not use pga gain highest level */ 224 { 0x77, 0x40 }, /* R gain 0x74 //awb gain */ 225 { 0x78, 0x40 }, /* G gain */ 226 { 0x79, 0x40 }, /* B gain 0x5f */ 227 228 { 0x48, 0x00 }, 229 { 0xfe, 0x01 }, 230 { 0x0a, 0x45 }, /* [7]col gain mode */ 231 232 { 0x3e, 0x40 }, 233 { 0x3f, 0x5c }, 234 { 0x40, 0x7b }, 235 { 0x41, 0xbd }, 236 { 0x42, 0xf6 }, 237 { 0x43, 0x63 }, 238 { 0x03, 0x60 }, 239 { 0x44, 0x03 }, 240 241 /* Dark / Sun mode related */ 242 { 0xfe, 0x01 }, 243 { 0x45, 0xa4 }, /* 0xf7 */ 244 { 0x46, 0xf0 }, /* 0xff //f0//sun value th */ 245 { 0x48, 0x03 }, /* sun mode */ 246 { 0x4f, 0x60 }, /* sun_clamp */ 247 { 0xfe, 0x00 }, 248 }; 249 250 static const struct gc0310_reg gc0310_VGA_30fps[] = { 251 { 0xfe, 0x00 }, 252 { 0x0d, 0x01 }, /* height */ 253 { 0x0e, 0xf2 }, /* 0xf7 //height */ 254 { 0x0f, 0x02 }, /* width */ 255 { 0x10, 0x94 }, /* 0xa0 //height */ 256 257 { 0x50, 0x01 }, /* crop enable */ 258 { 0x51, 0x00 }, 259 { 0x52, 0x00 }, 260 { 0x53, 0x00 }, 261 { 0x54, 0x01 }, 262 { 0x55, 0x01 }, /* crop window height */ 263 { 0x56, 0xf0 }, 264 { 0x57, 0x02 }, /* crop window width */ 265 { 0x58, 0x90 }, 266 267 { 0xfe, 0x03 }, 268 { 0x12, 0x90 }, /* 00 //04 //00 //04//00 //LWC[7:0] */ 269 { 0x13, 0x02 }, /* 05 //05 //LWC[15:8] */ 270 271 { 0xfe, 0x00 }, 272 }; 273 274 /* 275 * gc0310_write_reg_array - Initializes a list of GC0310 registers 276 * @client: i2c driver client structure 277 * @reglist: list of registers to be written 278 * @count: number of register, value pairs in the list 279 */ 280 static int gc0310_write_reg_array(struct i2c_client *client, 281 const struct gc0310_reg *reglist, int count) 282 { 283 int i, err; 284 285 for (i = 0; i < count; i++) { 286 err = i2c_smbus_write_byte_data(client, reglist[i].reg, reglist[i].val); 287 if (err) { 288 dev_err(&client->dev, "write error: wrote 0x%x to offset 0x%x error %d", 289 reglist[i].val, reglist[i].reg, err); 290 return err; 291 } 292 } 293 294 return 0; 295 } 296 297 static int gc0310_exposure_set(struct gc0310_device *dev, u32 exp) 298 { 299 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); 300 301 return i2c_smbus_write_word_swapped(client, GC0310_AEC_PK_EXPO_H, exp); 302 } 303 304 static int gc0310_gain_set(struct gc0310_device *dev, u32 gain) 305 { 306 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); 307 u8 again, dgain; 308 int ret; 309 310 /* Taken from original driver, this never sets dgain lower then 32? */ 311 312 /* Change 0 - 95 to 32 - 127 */ 313 gain += 32; 314 315 if (gain < 64) { 316 again = 0x0; /* sqrt(2) */ 317 dgain = gain; 318 } else { 319 again = 0x2; /* 2 * sqrt(2) */ 320 dgain = gain / 2; 321 } 322 323 ret = i2c_smbus_write_byte_data(client, GC0310_AGC_ADJ, again); 324 if (ret) 325 return ret; 326 327 return i2c_smbus_write_byte_data(client, GC0310_DGC_ADJ, dgain); 328 } 329 330 static int gc0310_s_ctrl(struct v4l2_ctrl *ctrl) 331 { 332 struct gc0310_device *dev = 333 container_of(ctrl->handler, struct gc0310_device, ctrls.handler); 334 int ret; 335 336 /* Only apply changes to the controls if the device is powered up */ 337 if (!pm_runtime_get_if_in_use(dev->sd.dev)) 338 return 0; 339 340 switch (ctrl->id) { 341 case V4L2_CID_EXPOSURE: 342 ret = gc0310_exposure_set(dev, ctrl->val); 343 break; 344 case V4L2_CID_GAIN: 345 ret = gc0310_gain_set(dev, ctrl->val); 346 break; 347 default: 348 ret = -EINVAL; 349 break; 350 } 351 352 pm_runtime_put(dev->sd.dev); 353 return ret; 354 } 355 356 static const struct v4l2_ctrl_ops ctrl_ops = { 357 .s_ctrl = gc0310_s_ctrl, 358 }; 359 360 static struct v4l2_mbus_framefmt * 361 gc0310_get_pad_format(struct gc0310_device *dev, 362 struct v4l2_subdev_state *state, 363 unsigned int pad, enum v4l2_subdev_format_whence which) 364 { 365 if (which == V4L2_SUBDEV_FORMAT_TRY) 366 return v4l2_subdev_get_try_format(&dev->sd, state, pad); 367 368 return &dev->mode.fmt; 369 } 370 371 /* The GC0310 currently only supports 1 fixed fmt */ 372 static void gc0310_fill_format(struct v4l2_mbus_framefmt *fmt) 373 { 374 memset(fmt, 0, sizeof(*fmt)); 375 fmt->width = GC0310_NATIVE_WIDTH; 376 fmt->height = GC0310_NATIVE_HEIGHT; 377 fmt->field = V4L2_FIELD_NONE; 378 fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8; 379 } 380 381 static int gc0310_set_fmt(struct v4l2_subdev *sd, 382 struct v4l2_subdev_state *sd_state, 383 struct v4l2_subdev_format *format) 384 { 385 struct gc0310_device *dev = to_gc0310_sensor(sd); 386 struct v4l2_mbus_framefmt *fmt; 387 388 fmt = gc0310_get_pad_format(dev, sd_state, format->pad, format->which); 389 gc0310_fill_format(fmt); 390 391 format->format = *fmt; 392 return 0; 393 } 394 395 static int gc0310_get_fmt(struct v4l2_subdev *sd, 396 struct v4l2_subdev_state *sd_state, 397 struct v4l2_subdev_format *format) 398 { 399 struct gc0310_device *dev = to_gc0310_sensor(sd); 400 struct v4l2_mbus_framefmt *fmt; 401 402 fmt = gc0310_get_pad_format(dev, sd_state, format->pad, format->which); 403 format->format = *fmt; 404 return 0; 405 } 406 407 static int gc0310_detect(struct i2c_client *client) 408 { 409 struct i2c_adapter *adapter = client->adapter; 410 int ret; 411 412 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) 413 return -ENODEV; 414 415 ret = pm_runtime_get_sync(&client->dev); 416 if (ret >= 0) 417 ret = i2c_smbus_read_word_swapped(client, GC0310_SC_CMMN_CHIP_ID_H); 418 pm_runtime_put(&client->dev); 419 if (ret < 0) { 420 dev_err(&client->dev, "read sensor_id failed: %d\n", ret); 421 return -ENODEV; 422 } 423 424 dev_dbg(&client->dev, "sensor ID = 0x%x\n", ret); 425 426 if (ret != GC0310_ID) { 427 dev_err(&client->dev, "sensor ID error, read id = 0x%x, target id = 0x%x\n", 428 ret, GC0310_ID); 429 return -ENODEV; 430 } 431 432 dev_dbg(&client->dev, "detect gc0310 success\n"); 433 434 return 0; 435 } 436 437 static int gc0310_s_stream(struct v4l2_subdev *sd, int enable) 438 { 439 struct gc0310_device *dev = to_gc0310_sensor(sd); 440 struct i2c_client *client = v4l2_get_subdevdata(sd); 441 int ret = 0; 442 443 dev_dbg(&client->dev, "%s S enable=%d\n", __func__, enable); 444 mutex_lock(&dev->input_lock); 445 446 if (dev->is_streaming == enable) { 447 dev_warn(&client->dev, "stream already %s\n", enable ? "started" : "stopped"); 448 goto error_unlock; 449 } 450 451 if (enable) { 452 ret = pm_runtime_get_sync(&client->dev); 453 if (ret < 0) 454 goto error_power_down; 455 456 msleep(100); 457 458 ret = gc0310_write_reg_array(client, gc0310_reset_register, 459 ARRAY_SIZE(gc0310_reset_register)); 460 if (ret) 461 goto error_power_down; 462 463 ret = gc0310_write_reg_array(client, gc0310_VGA_30fps, 464 ARRAY_SIZE(gc0310_VGA_30fps)); 465 if (ret) 466 goto error_power_down; 467 468 /* restore value of all ctrls */ 469 ret = __v4l2_ctrl_handler_setup(&dev->ctrls.handler); 470 if (ret) 471 goto error_power_down; 472 473 /* enable per frame MIPI and sensor ctrl reset */ 474 ret = i2c_smbus_write_byte_data(client, 0xFE, 0x30); 475 if (ret) 476 goto error_power_down; 477 } 478 479 ret = i2c_smbus_write_byte_data(client, GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_3); 480 if (ret) 481 goto error_power_down; 482 483 ret = i2c_smbus_write_byte_data(client, GC0310_SW_STREAM, 484 enable ? GC0310_START_STREAMING : GC0310_STOP_STREAMING); 485 if (ret) 486 goto error_power_down; 487 488 ret = i2c_smbus_write_byte_data(client, GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_0); 489 if (ret) 490 goto error_power_down; 491 492 if (!enable) 493 pm_runtime_put(&client->dev); 494 495 dev->is_streaming = enable; 496 mutex_unlock(&dev->input_lock); 497 return 0; 498 499 error_power_down: 500 pm_runtime_put(&client->dev); 501 dev->is_streaming = false; 502 error_unlock: 503 mutex_unlock(&dev->input_lock); 504 return ret; 505 } 506 507 static int gc0310_g_frame_interval(struct v4l2_subdev *sd, 508 struct v4l2_subdev_frame_interval *interval) 509 { 510 interval->interval.numerator = 1; 511 interval->interval.denominator = GC0310_FPS; 512 513 return 0; 514 } 515 516 static int gc0310_enum_mbus_code(struct v4l2_subdev *sd, 517 struct v4l2_subdev_state *sd_state, 518 struct v4l2_subdev_mbus_code_enum *code) 519 { 520 /* We support only a single format */ 521 if (code->index) 522 return -EINVAL; 523 524 code->code = MEDIA_BUS_FMT_SGRBG8_1X8; 525 return 0; 526 } 527 528 static int gc0310_enum_frame_size(struct v4l2_subdev *sd, 529 struct v4l2_subdev_state *sd_state, 530 struct v4l2_subdev_frame_size_enum *fse) 531 { 532 /* We support only a single resolution */ 533 if (fse->index) 534 return -EINVAL; 535 536 fse->min_width = GC0310_NATIVE_WIDTH; 537 fse->max_width = GC0310_NATIVE_WIDTH; 538 fse->min_height = GC0310_NATIVE_HEIGHT; 539 fse->max_height = GC0310_NATIVE_HEIGHT; 540 541 return 0; 542 } 543 544 static int gc0310_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) 545 { 546 *frames = GC0310_SKIP_FRAMES; 547 return 0; 548 } 549 550 static const struct v4l2_subdev_sensor_ops gc0310_sensor_ops = { 551 .g_skip_frames = gc0310_g_skip_frames, 552 }; 553 554 static const struct v4l2_subdev_video_ops gc0310_video_ops = { 555 .s_stream = gc0310_s_stream, 556 .g_frame_interval = gc0310_g_frame_interval, 557 }; 558 559 static const struct v4l2_subdev_pad_ops gc0310_pad_ops = { 560 .enum_mbus_code = gc0310_enum_mbus_code, 561 .enum_frame_size = gc0310_enum_frame_size, 562 .get_fmt = gc0310_get_fmt, 563 .set_fmt = gc0310_set_fmt, 564 }; 565 566 static const struct v4l2_subdev_ops gc0310_ops = { 567 .video = &gc0310_video_ops, 568 .pad = &gc0310_pad_ops, 569 .sensor = &gc0310_sensor_ops, 570 }; 571 572 static int gc0310_init_controls(struct gc0310_device *dev) 573 { 574 struct v4l2_ctrl_handler *hdl = &dev->ctrls.handler; 575 576 v4l2_ctrl_handler_init(hdl, 2); 577 578 /* Use the same lock for controls as for everything else */ 579 hdl->lock = &dev->input_lock; 580 dev->sd.ctrl_handler = hdl; 581 582 dev->ctrls.exposure = 583 v4l2_ctrl_new_std(hdl, &ctrl_ops, V4L2_CID_EXPOSURE, 0, 4095, 1, 1023); 584 585 /* 32 steps at base gain 1 + 64 half steps at base gain 2 */ 586 dev->ctrls.gain = 587 v4l2_ctrl_new_std(hdl, &ctrl_ops, V4L2_CID_GAIN, 0, 95, 1, 31); 588 589 return hdl->error; 590 } 591 592 static void gc0310_remove(struct i2c_client *client) 593 { 594 struct v4l2_subdev *sd = i2c_get_clientdata(client); 595 struct gc0310_device *dev = to_gc0310_sensor(sd); 596 597 dev_dbg(&client->dev, "gc0310_remove...\n"); 598 599 atomisp_unregister_subdev(sd); 600 v4l2_device_unregister_subdev(sd); 601 media_entity_cleanup(&dev->sd.entity); 602 v4l2_ctrl_handler_free(&dev->ctrls.handler); 603 mutex_destroy(&dev->input_lock); 604 pm_runtime_disable(&client->dev); 605 } 606 607 static int gc0310_probe(struct i2c_client *client) 608 { 609 struct gc0310_device *dev; 610 int ret; 611 612 dev = devm_kzalloc(&client->dev, sizeof(*dev), GFP_KERNEL); 613 if (!dev) 614 return -ENOMEM; 615 616 ret = v4l2_get_acpi_sensor_info(&client->dev, NULL); 617 if (ret) 618 return ret; 619 620 dev->reset = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_HIGH); 621 if (IS_ERR(dev->reset)) 622 return dev_err_probe(&client->dev, PTR_ERR(dev->reset), 623 "getting reset GPIO\n"); 624 625 dev->powerdown = devm_gpiod_get(&client->dev, "powerdown", GPIOD_OUT_HIGH); 626 if (IS_ERR(dev->powerdown)) 627 return dev_err_probe(&client->dev, PTR_ERR(dev->powerdown), 628 "getting powerdown GPIO\n"); 629 630 mutex_init(&dev->input_lock); 631 v4l2_i2c_subdev_init(&dev->sd, client, &gc0310_ops); 632 gc0310_fill_format(&dev->mode.fmt); 633 634 pm_runtime_set_suspended(&client->dev); 635 pm_runtime_enable(&client->dev); 636 pm_runtime_set_autosuspend_delay(&client->dev, 1000); 637 pm_runtime_use_autosuspend(&client->dev); 638 639 ret = gc0310_detect(client); 640 if (ret) { 641 gc0310_remove(client); 642 return ret; 643 } 644 645 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 646 dev->pad.flags = MEDIA_PAD_FL_SOURCE; 647 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 648 649 ret = gc0310_init_controls(dev); 650 if (ret) { 651 gc0310_remove(client); 652 return ret; 653 } 654 655 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); 656 if (ret) { 657 gc0310_remove(client); 658 return ret; 659 } 660 661 ret = atomisp_register_sensor_no_gmin(&dev->sd, 1, ATOMISP_INPUT_FORMAT_RAW_8, 662 atomisp_bayer_order_grbg); 663 if (ret) { 664 gc0310_remove(client); 665 return ret; 666 } 667 668 return 0; 669 } 670 671 static int gc0310_suspend(struct device *dev) 672 { 673 struct v4l2_subdev *sd = dev_get_drvdata(dev); 674 struct gc0310_device *gc0310_dev = to_gc0310_sensor(sd); 675 676 gpiod_set_value_cansleep(gc0310_dev->powerdown, 1); 677 gpiod_set_value_cansleep(gc0310_dev->reset, 1); 678 return 0; 679 } 680 681 static int gc0310_resume(struct device *dev) 682 { 683 struct v4l2_subdev *sd = dev_get_drvdata(dev); 684 struct gc0310_device *gc0310_dev = to_gc0310_sensor(sd); 685 686 usleep_range(10000, 15000); 687 gpiod_set_value_cansleep(gc0310_dev->reset, 0); 688 usleep_range(10000, 15000); 689 gpiod_set_value_cansleep(gc0310_dev->powerdown, 0); 690 691 return 0; 692 } 693 694 static DEFINE_RUNTIME_DEV_PM_OPS(gc0310_pm_ops, gc0310_suspend, gc0310_resume, NULL); 695 696 static const struct acpi_device_id gc0310_acpi_match[] = { 697 {"INT0310"}, 698 {}, 699 }; 700 MODULE_DEVICE_TABLE(acpi, gc0310_acpi_match); 701 702 static struct i2c_driver gc0310_driver = { 703 .driver = { 704 .name = "gc0310", 705 .pm = pm_sleep_ptr(&gc0310_pm_ops), 706 .acpi_match_table = gc0310_acpi_match, 707 }, 708 .probe = gc0310_probe, 709 .remove = gc0310_remove, 710 }; 711 module_i2c_driver(gc0310_driver); 712 713 MODULE_AUTHOR("Lai, Angie <angie.lai@intel.com>"); 714 MODULE_DESCRIPTION("A low-level driver for GalaxyCore GC0310 sensors"); 715 MODULE_LICENSE("GPL"); 716