1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2023 Intel Corporation. 4 */ 5 6 #include <asm/unaligned.h> 7 8 #include <linux/acpi.h> 9 #include <linux/bitfield.h> 10 #include <linux/i2c.h> 11 #include <linux/module.h> 12 #include <linux/pm_runtime.h> 13 14 #include <media/v4l2-ctrls.h> 15 #include <media/v4l2-device.h> 16 #include <media/v4l2-event.h> 17 #include <media/v4l2-fwnode.h> 18 19 #define OV01A10_LINK_FREQ_400MHZ 400000000ULL 20 #define OV01A10_SCLK 40000000LL 21 #define OV01A10_DATA_LANES 1 22 23 #define OV01A10_REG_CHIP_ID 0x300a 24 #define OV01A10_CHIP_ID 0x560141 25 26 #define OV01A10_REG_MODE_SELECT 0x0100 27 #define OV01A10_MODE_STANDBY 0x00 28 #define OV01A10_MODE_STREAMING 0x01 29 30 /* pixel array */ 31 #define OV01A10_PIXEL_ARRAY_WIDTH 1296 32 #define OV01A10_PIXEL_ARRAY_HEIGHT 816 33 #define OV01A10_ACITVE_WIDTH 1280 34 #define OV01A10_ACITVE_HEIGHT 800 35 36 /* vertical and horizontal timings */ 37 #define OV01A10_REG_VTS 0x380e 38 #define OV01A10_VTS_DEF 0x0380 39 #define OV01A10_VTS_MIN 0x0380 40 #define OV01A10_VTS_MAX 0xffff 41 #define OV01A10_HTS_DEF 1488 42 43 /* exposure controls */ 44 #define OV01A10_REG_EXPOSURE 0x3501 45 #define OV01A10_EXPOSURE_MIN 4 46 #define OV01A10_EXPOSURE_MAX_MARGIN 8 47 #define OV01A10_EXPOSURE_STEP 1 48 49 /* analog gain controls */ 50 #define OV01A10_REG_ANALOG_GAIN 0x3508 51 #define OV01A10_ANAL_GAIN_MIN 0x100 52 #define OV01A10_ANAL_GAIN_MAX 0xffff 53 #define OV01A10_ANAL_GAIN_STEP 1 54 55 /* digital gain controls */ 56 #define OV01A10_REG_DIGITAL_GAIN_B 0x350a 57 #define OV01A10_REG_DIGITAL_GAIN_GB 0x3510 58 #define OV01A10_REG_DIGITAL_GAIN_GR 0x3513 59 #define OV01A10_REG_DIGITAL_GAIN_R 0x3516 60 #define OV01A10_DGTL_GAIN_MIN 0 61 #define OV01A10_DGTL_GAIN_MAX 0x3ffff 62 #define OV01A10_DGTL_GAIN_STEP 1 63 #define OV01A10_DGTL_GAIN_DEFAULT 1024 64 65 /* test pattern control */ 66 #define OV01A10_REG_TEST_PATTERN 0x4503 67 #define OV01A10_TEST_PATTERN_ENABLE BIT(7) 68 #define OV01A10_LINK_FREQ_400MHZ_INDEX 0 69 70 /* flip and mirror control */ 71 #define OV01A10_REG_FORMAT1 0x3820 72 #define OV01A10_VFLIP_MASK BIT(4) 73 #define OV01A10_HFLIP_MASK BIT(3) 74 75 /* window offset */ 76 #define OV01A10_REG_X_WIN 0x3811 77 #define OV01A10_REG_Y_WIN 0x3813 78 79 struct ov01a10_reg { 80 u16 address; 81 u8 val; 82 }; 83 84 struct ov01a10_reg_list { 85 u32 num_of_regs; 86 const struct ov01a10_reg *regs; 87 }; 88 89 struct ov01a10_link_freq_config { 90 const struct ov01a10_reg_list reg_list; 91 }; 92 93 struct ov01a10_mode { 94 u32 width; 95 u32 height; 96 u32 hts; 97 u32 vts_def; 98 u32 vts_min; 99 u32 link_freq_index; 100 101 const struct ov01a10_reg_list reg_list; 102 }; 103 104 static const struct ov01a10_reg mipi_data_rate_720mbps[] = { 105 {0x0103, 0x01}, 106 {0x0302, 0x00}, 107 {0x0303, 0x06}, 108 {0x0304, 0x01}, 109 {0x0305, 0xe0}, 110 {0x0306, 0x00}, 111 {0x0308, 0x01}, 112 {0x0309, 0x00}, 113 {0x030c, 0x01}, 114 {0x0322, 0x01}, 115 {0x0323, 0x06}, 116 {0x0324, 0x01}, 117 {0x0325, 0x68}, 118 }; 119 120 static const struct ov01a10_reg sensor_1280x800_setting[] = { 121 {0x3002, 0xa1}, 122 {0x301e, 0xf0}, 123 {0x3022, 0x01}, 124 {0x3501, 0x03}, 125 {0x3502, 0x78}, 126 {0x3504, 0x0c}, 127 {0x3508, 0x01}, 128 {0x3509, 0x00}, 129 {0x3601, 0xc0}, 130 {0x3603, 0x71}, 131 {0x3610, 0x68}, 132 {0x3611, 0x86}, 133 {0x3640, 0x10}, 134 {0x3641, 0x80}, 135 {0x3642, 0xdc}, 136 {0x3646, 0x55}, 137 {0x3647, 0x57}, 138 {0x364b, 0x00}, 139 {0x3653, 0x10}, 140 {0x3655, 0x00}, 141 {0x3656, 0x00}, 142 {0x365f, 0x0f}, 143 {0x3661, 0x45}, 144 {0x3662, 0x24}, 145 {0x3663, 0x11}, 146 {0x3664, 0x07}, 147 {0x3709, 0x34}, 148 {0x370b, 0x6f}, 149 {0x3714, 0x22}, 150 {0x371b, 0x27}, 151 {0x371c, 0x67}, 152 {0x371d, 0xa7}, 153 {0x371e, 0xe7}, 154 {0x3730, 0x81}, 155 {0x3733, 0x10}, 156 {0x3734, 0x40}, 157 {0x3737, 0x04}, 158 {0x3739, 0x1c}, 159 {0x3767, 0x00}, 160 {0x376c, 0x81}, 161 {0x3772, 0x14}, 162 {0x37c2, 0x04}, 163 {0x37d8, 0x03}, 164 {0x37d9, 0x0c}, 165 {0x37e0, 0x00}, 166 {0x37e1, 0x08}, 167 {0x37e2, 0x10}, 168 {0x37e3, 0x04}, 169 {0x37e4, 0x04}, 170 {0x37e5, 0x03}, 171 {0x37e6, 0x04}, 172 {0x3800, 0x00}, 173 {0x3801, 0x00}, 174 {0x3802, 0x00}, 175 {0x3803, 0x00}, 176 {0x3804, 0x05}, 177 {0x3805, 0x0f}, 178 {0x3806, 0x03}, 179 {0x3807, 0x2f}, 180 {0x3808, 0x05}, 181 {0x3809, 0x00}, 182 {0x380a, 0x03}, 183 {0x380b, 0x20}, 184 {0x380c, 0x02}, 185 {0x380d, 0xe8}, 186 {0x380e, 0x03}, 187 {0x380f, 0x80}, 188 {0x3810, 0x00}, 189 {0x3811, 0x08}, 190 {0x3812, 0x00}, 191 {0x3813, 0x08}, 192 {0x3814, 0x01}, 193 {0x3815, 0x01}, 194 {0x3816, 0x01}, 195 {0x3817, 0x01}, 196 {0x3820, 0xa0}, 197 {0x3822, 0x13}, 198 {0x3832, 0x28}, 199 {0x3833, 0x10}, 200 {0x3b00, 0x00}, 201 {0x3c80, 0x00}, 202 {0x3c88, 0x02}, 203 {0x3c8c, 0x07}, 204 {0x3c8d, 0x40}, 205 {0x3cc7, 0x80}, 206 {0x4000, 0xc3}, 207 {0x4001, 0xe0}, 208 {0x4003, 0x40}, 209 {0x4008, 0x02}, 210 {0x4009, 0x19}, 211 {0x400a, 0x01}, 212 {0x400b, 0x6c}, 213 {0x4011, 0x00}, 214 {0x4041, 0x00}, 215 {0x4300, 0xff}, 216 {0x4301, 0x00}, 217 {0x4302, 0x0f}, 218 {0x4503, 0x00}, 219 {0x4601, 0x50}, 220 {0x4800, 0x64}, 221 {0x481f, 0x34}, 222 {0x4825, 0x33}, 223 {0x4837, 0x11}, 224 {0x4881, 0x40}, 225 {0x4883, 0x01}, 226 {0x4890, 0x00}, 227 {0x4901, 0x00}, 228 {0x4902, 0x00}, 229 {0x4b00, 0x2a}, 230 {0x4b0d, 0x00}, 231 {0x450a, 0x04}, 232 {0x450b, 0x00}, 233 {0x5000, 0x65}, 234 {0x5200, 0x18}, 235 {0x5004, 0x00}, 236 {0x5080, 0x40}, 237 {0x0305, 0xf4}, 238 {0x0325, 0xc2}, 239 }; 240 241 static const char * const ov01a10_test_pattern_menu[] = { 242 "Disabled", 243 "Color Bar", 244 "Top-Bottom Darker Color Bar", 245 "Right-Left Darker Color Bar", 246 "Color Bar type 4", 247 }; 248 249 static const s64 link_freq_menu_items[] = { 250 OV01A10_LINK_FREQ_400MHZ, 251 }; 252 253 static const struct ov01a10_link_freq_config link_freq_configs[] = { 254 [OV01A10_LINK_FREQ_400MHZ_INDEX] = { 255 .reg_list = { 256 .num_of_regs = ARRAY_SIZE(mipi_data_rate_720mbps), 257 .regs = mipi_data_rate_720mbps, 258 } 259 }, 260 }; 261 262 static const struct ov01a10_mode supported_modes[] = { 263 { 264 .width = OV01A10_ACITVE_WIDTH, 265 .height = OV01A10_ACITVE_HEIGHT, 266 .hts = OV01A10_HTS_DEF, 267 .vts_def = OV01A10_VTS_DEF, 268 .vts_min = OV01A10_VTS_MIN, 269 .reg_list = { 270 .num_of_regs = ARRAY_SIZE(sensor_1280x800_setting), 271 .regs = sensor_1280x800_setting, 272 }, 273 .link_freq_index = OV01A10_LINK_FREQ_400MHZ_INDEX, 274 }, 275 }; 276 277 struct ov01a10 { 278 struct v4l2_subdev sd; 279 struct media_pad pad; 280 struct v4l2_ctrl_handler ctrl_handler; 281 282 /* v4l2 controls */ 283 struct v4l2_ctrl *link_freq; 284 struct v4l2_ctrl *pixel_rate; 285 struct v4l2_ctrl *vblank; 286 struct v4l2_ctrl *hblank; 287 struct v4l2_ctrl *exposure; 288 289 const struct ov01a10_mode *cur_mode; 290 }; 291 292 static inline struct ov01a10 *to_ov01a10(struct v4l2_subdev *subdev) 293 { 294 return container_of(subdev, struct ov01a10, sd); 295 } 296 297 static int ov01a10_read_reg(struct ov01a10 *ov01a10, u16 reg, u16 len, u32 *val) 298 { 299 struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); 300 struct i2c_msg msgs[2]; 301 u8 addr_buf[2]; 302 u8 data_buf[4] = {0}; 303 int ret = 0; 304 305 if (len > sizeof(data_buf)) 306 return -EINVAL; 307 308 put_unaligned_be16(reg, addr_buf); 309 msgs[0].addr = client->addr; 310 msgs[0].flags = 0; 311 msgs[0].len = sizeof(addr_buf); 312 msgs[0].buf = addr_buf; 313 msgs[1].addr = client->addr; 314 msgs[1].flags = I2C_M_RD; 315 msgs[1].len = len; 316 msgs[1].buf = &data_buf[sizeof(data_buf) - len]; 317 318 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); 319 320 if (ret != ARRAY_SIZE(msgs)) 321 return ret < 0 ? ret : -EIO; 322 323 *val = get_unaligned_be32(data_buf); 324 325 return 0; 326 } 327 328 static int ov01a10_write_reg(struct ov01a10 *ov01a10, u16 reg, u16 len, u32 val) 329 { 330 struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); 331 u8 buf[6]; 332 int ret = 0; 333 334 if (len > 4) 335 return -EINVAL; 336 337 put_unaligned_be16(reg, buf); 338 put_unaligned_be32(val << 8 * (4 - len), buf + 2); 339 340 ret = i2c_master_send(client, buf, len + 2); 341 if (ret != len + 2) 342 return ret < 0 ? ret : -EIO; 343 344 return 0; 345 } 346 347 static int ov01a10_write_reg_list(struct ov01a10 *ov01a10, 348 const struct ov01a10_reg_list *r_list) 349 { 350 struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); 351 unsigned int i; 352 int ret = 0; 353 354 for (i = 0; i < r_list->num_of_regs; i++) { 355 ret = ov01a10_write_reg(ov01a10, r_list->regs[i].address, 1, 356 r_list->regs[i].val); 357 if (ret) { 358 dev_err_ratelimited(&client->dev, 359 "write reg 0x%4.4x err = %d\n", 360 r_list->regs[i].address, ret); 361 return ret; 362 } 363 } 364 365 return 0; 366 } 367 368 static int ov01a10_update_digital_gain(struct ov01a10 *ov01a10, u32 d_gain) 369 { 370 struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); 371 u32 real = d_gain << 6; 372 int ret = 0; 373 374 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGITAL_GAIN_B, 3, real); 375 if (ret) { 376 dev_err(&client->dev, "failed to set DIGITAL_GAIN_B\n"); 377 return ret; 378 } 379 380 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGITAL_GAIN_GB, 3, real); 381 if (ret) { 382 dev_err(&client->dev, "failed to set DIGITAL_GAIN_GB\n"); 383 return ret; 384 } 385 386 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGITAL_GAIN_GR, 3, real); 387 if (ret) { 388 dev_err(&client->dev, "failed to set DIGITAL_GAIN_GR\n"); 389 return ret; 390 } 391 392 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_DIGITAL_GAIN_R, 3, real); 393 if (ret) 394 dev_err(&client->dev, "failed to set DIGITAL_GAIN_R\n"); 395 396 return ret; 397 } 398 399 static int ov01a10_test_pattern(struct ov01a10 *ov01a10, u32 pattern) 400 { 401 if (!pattern) 402 return 0; 403 404 pattern = (pattern - 1) | OV01A10_TEST_PATTERN_ENABLE; 405 406 return ov01a10_write_reg(ov01a10, OV01A10_REG_TEST_PATTERN, 1, pattern); 407 } 408 409 /* for vflip and hflip, use 0x9 as window offset to keep the bayer */ 410 static int ov01a10_set_hflip(struct ov01a10 *ov01a10, u32 hflip) 411 { 412 int ret; 413 u32 val, offset; 414 415 offset = hflip ? 0x9 : 0x8; 416 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_X_WIN, 1, offset); 417 if (ret) 418 return ret; 419 420 ret = ov01a10_read_reg(ov01a10, OV01A10_REG_FORMAT1, 1, &val); 421 if (ret) 422 return ret; 423 424 val = hflip ? val | FIELD_PREP(OV01A10_HFLIP_MASK, 0x1) : 425 val & ~OV01A10_HFLIP_MASK; 426 427 return ov01a10_write_reg(ov01a10, OV01A10_REG_FORMAT1, 1, val); 428 } 429 430 static int ov01a10_set_vflip(struct ov01a10 *ov01a10, u32 vflip) 431 { 432 int ret; 433 u32 val, offset; 434 435 offset = vflip ? 0x9 : 0x8; 436 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_Y_WIN, 1, offset); 437 if (ret) 438 return ret; 439 440 ret = ov01a10_read_reg(ov01a10, OV01A10_REG_FORMAT1, 1, &val); 441 if (ret) 442 return ret; 443 444 val = vflip ? val | FIELD_PREP(OV01A10_VFLIP_MASK, 0x1) : 445 val & ~OV01A10_VFLIP_MASK; 446 447 return ov01a10_write_reg(ov01a10, OV01A10_REG_FORMAT1, 1, val); 448 } 449 450 static int ov01a10_set_ctrl(struct v4l2_ctrl *ctrl) 451 { 452 struct ov01a10 *ov01a10 = container_of(ctrl->handler, 453 struct ov01a10, ctrl_handler); 454 struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); 455 s64 exposure_max; 456 int ret = 0; 457 458 if (ctrl->id == V4L2_CID_VBLANK) { 459 exposure_max = ov01a10->cur_mode->height + ctrl->val - 460 OV01A10_EXPOSURE_MAX_MARGIN; 461 __v4l2_ctrl_modify_range(ov01a10->exposure, 462 ov01a10->exposure->minimum, 463 exposure_max, ov01a10->exposure->step, 464 exposure_max); 465 } 466 467 if (!pm_runtime_get_if_in_use(&client->dev)) 468 return 0; 469 470 switch (ctrl->id) { 471 case V4L2_CID_ANALOGUE_GAIN: 472 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_ANALOG_GAIN, 2, 473 ctrl->val); 474 break; 475 476 case V4L2_CID_DIGITAL_GAIN: 477 ret = ov01a10_update_digital_gain(ov01a10, ctrl->val); 478 break; 479 480 case V4L2_CID_EXPOSURE: 481 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_EXPOSURE, 2, 482 ctrl->val); 483 break; 484 485 case V4L2_CID_VBLANK: 486 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_VTS, 2, 487 ov01a10->cur_mode->height + ctrl->val); 488 break; 489 490 case V4L2_CID_TEST_PATTERN: 491 ret = ov01a10_test_pattern(ov01a10, ctrl->val); 492 break; 493 494 case V4L2_CID_HFLIP: 495 ov01a10_set_hflip(ov01a10, ctrl->val); 496 break; 497 498 case V4L2_CID_VFLIP: 499 ov01a10_set_vflip(ov01a10, ctrl->val); 500 break; 501 502 default: 503 ret = -EINVAL; 504 break; 505 } 506 507 pm_runtime_put(&client->dev); 508 509 return ret; 510 } 511 512 static const struct v4l2_ctrl_ops ov01a10_ctrl_ops = { 513 .s_ctrl = ov01a10_set_ctrl, 514 }; 515 516 static int ov01a10_init_controls(struct ov01a10 *ov01a10) 517 { 518 struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); 519 struct v4l2_fwnode_device_properties props; 520 u32 vblank_min, vblank_max, vblank_default; 521 struct v4l2_ctrl_handler *ctrl_hdlr; 522 const struct ov01a10_mode *cur_mode; 523 s64 exposure_max, h_blank; 524 int ret = 0; 525 int size; 526 527 ret = v4l2_fwnode_device_parse(&client->dev, &props); 528 if (ret) 529 return ret; 530 531 ctrl_hdlr = &ov01a10->ctrl_handler; 532 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 12); 533 if (ret) 534 return ret; 535 536 cur_mode = ov01a10->cur_mode; 537 size = ARRAY_SIZE(link_freq_menu_items); 538 539 ov01a10->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, 540 &ov01a10_ctrl_ops, 541 V4L2_CID_LINK_FREQ, 542 size - 1, 0, 543 link_freq_menu_items); 544 if (ov01a10->link_freq) 545 ov01a10->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 546 547 ov01a10->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, 548 V4L2_CID_PIXEL_RATE, 0, 549 OV01A10_SCLK, 1, OV01A10_SCLK); 550 551 vblank_min = cur_mode->vts_min - cur_mode->height; 552 vblank_max = OV01A10_VTS_MAX - cur_mode->height; 553 vblank_default = cur_mode->vts_def - cur_mode->height; 554 ov01a10->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, 555 V4L2_CID_VBLANK, vblank_min, 556 vblank_max, 1, vblank_default); 557 558 h_blank = cur_mode->hts - cur_mode->width; 559 ov01a10->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, 560 V4L2_CID_HBLANK, h_blank, h_blank, 561 1, h_blank); 562 if (ov01a10->hblank) 563 ov01a10->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 564 565 v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, 566 OV01A10_ANAL_GAIN_MIN, OV01A10_ANAL_GAIN_MAX, 567 OV01A10_ANAL_GAIN_STEP, OV01A10_ANAL_GAIN_MIN); 568 v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, V4L2_CID_DIGITAL_GAIN, 569 OV01A10_DGTL_GAIN_MIN, OV01A10_DGTL_GAIN_MAX, 570 OV01A10_DGTL_GAIN_STEP, OV01A10_DGTL_GAIN_DEFAULT); 571 572 exposure_max = cur_mode->vts_def - OV01A10_EXPOSURE_MAX_MARGIN; 573 ov01a10->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, 574 V4L2_CID_EXPOSURE, 575 OV01A10_EXPOSURE_MIN, 576 exposure_max, 577 OV01A10_EXPOSURE_STEP, 578 exposure_max); 579 580 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov01a10_ctrl_ops, 581 V4L2_CID_TEST_PATTERN, 582 ARRAY_SIZE(ov01a10_test_pattern_menu) - 1, 583 0, 0, ov01a10_test_pattern_menu); 584 585 v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, V4L2_CID_HFLIP, 586 0, 1, 1, 0); 587 v4l2_ctrl_new_std(ctrl_hdlr, &ov01a10_ctrl_ops, V4L2_CID_VFLIP, 588 0, 1, 1, 0); 589 590 ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &ov01a10_ctrl_ops, 591 &props); 592 if (ret) 593 goto fail; 594 595 if (ctrl_hdlr->error) { 596 ret = ctrl_hdlr->error; 597 goto fail; 598 } 599 600 ov01a10->sd.ctrl_handler = ctrl_hdlr; 601 602 return 0; 603 fail: 604 v4l2_ctrl_handler_free(ctrl_hdlr); 605 606 return ret; 607 } 608 609 static void ov01a10_update_pad_format(const struct ov01a10_mode *mode, 610 struct v4l2_mbus_framefmt *fmt) 611 { 612 fmt->width = mode->width; 613 fmt->height = mode->height; 614 fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; 615 fmt->field = V4L2_FIELD_NONE; 616 fmt->colorspace = V4L2_COLORSPACE_RAW; 617 } 618 619 static int ov01a10_start_streaming(struct ov01a10 *ov01a10) 620 { 621 struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); 622 const struct ov01a10_reg_list *reg_list; 623 int link_freq_index; 624 int ret = 0; 625 626 link_freq_index = ov01a10->cur_mode->link_freq_index; 627 reg_list = &link_freq_configs[link_freq_index].reg_list; 628 ret = ov01a10_write_reg_list(ov01a10, reg_list); 629 if (ret) { 630 dev_err(&client->dev, "failed to set plls\n"); 631 return ret; 632 } 633 634 reg_list = &ov01a10->cur_mode->reg_list; 635 ret = ov01a10_write_reg_list(ov01a10, reg_list); 636 if (ret) { 637 dev_err(&client->dev, "failed to set mode\n"); 638 return ret; 639 } 640 641 ret = __v4l2_ctrl_handler_setup(ov01a10->sd.ctrl_handler); 642 if (ret) 643 return ret; 644 645 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_MODE_SELECT, 1, 646 OV01A10_MODE_STREAMING); 647 if (ret) 648 dev_err(&client->dev, "failed to start streaming\n"); 649 650 return ret; 651 } 652 653 static void ov01a10_stop_streaming(struct ov01a10 *ov01a10) 654 { 655 struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); 656 int ret = 0; 657 658 ret = ov01a10_write_reg(ov01a10, OV01A10_REG_MODE_SELECT, 1, 659 OV01A10_MODE_STANDBY); 660 if (ret) 661 dev_err(&client->dev, "failed to stop streaming\n"); 662 } 663 664 static int ov01a10_set_stream(struct v4l2_subdev *sd, int enable) 665 { 666 struct ov01a10 *ov01a10 = to_ov01a10(sd); 667 struct i2c_client *client = v4l2_get_subdevdata(sd); 668 struct v4l2_subdev_state *state; 669 int ret = 0; 670 671 state = v4l2_subdev_lock_and_get_active_state(sd); 672 673 if (enable) { 674 ret = pm_runtime_resume_and_get(&client->dev); 675 if (ret < 0) 676 goto unlock; 677 678 ret = ov01a10_start_streaming(ov01a10); 679 if (ret) { 680 pm_runtime_put(&client->dev); 681 goto unlock; 682 } 683 } else { 684 ov01a10_stop_streaming(ov01a10); 685 pm_runtime_put(&client->dev); 686 } 687 688 unlock: 689 v4l2_subdev_unlock_state(state); 690 691 return ret; 692 } 693 694 static int ov01a10_set_format(struct v4l2_subdev *sd, 695 struct v4l2_subdev_state *sd_state, 696 struct v4l2_subdev_format *fmt) 697 { 698 struct ov01a10 *ov01a10 = to_ov01a10(sd); 699 const struct ov01a10_mode *mode; 700 struct v4l2_mbus_framefmt *format; 701 s32 vblank_def, h_blank; 702 703 mode = v4l2_find_nearest_size(supported_modes, 704 ARRAY_SIZE(supported_modes), width, 705 height, fmt->format.width, 706 fmt->format.height); 707 708 ov01a10_update_pad_format(mode, &fmt->format); 709 710 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { 711 ov01a10->cur_mode = mode; 712 __v4l2_ctrl_s_ctrl(ov01a10->link_freq, mode->link_freq_index); 713 __v4l2_ctrl_s_ctrl_int64(ov01a10->pixel_rate, OV01A10_SCLK); 714 715 vblank_def = mode->vts_def - mode->height; 716 __v4l2_ctrl_modify_range(ov01a10->vblank, 717 mode->vts_min - mode->height, 718 OV01A10_VTS_MAX - mode->height, 1, 719 vblank_def); 720 __v4l2_ctrl_s_ctrl(ov01a10->vblank, vblank_def); 721 h_blank = mode->hts - mode->width; 722 __v4l2_ctrl_modify_range(ov01a10->hblank, h_blank, h_blank, 1, 723 h_blank); 724 } 725 726 format = v4l2_subdev_state_get_format(sd_state, fmt->stream); 727 *format = fmt->format; 728 729 return 0; 730 } 731 732 static int ov01a10_init_state(struct v4l2_subdev *sd, 733 struct v4l2_subdev_state *state) 734 { 735 struct v4l2_subdev_format fmt = { 736 .which = V4L2_SUBDEV_FORMAT_TRY, 737 .format = { 738 .width = OV01A10_ACITVE_WIDTH, 739 .height = OV01A10_ACITVE_HEIGHT, 740 }, 741 }; 742 743 ov01a10_set_format(sd, state, &fmt); 744 745 return 0; 746 } 747 748 static int ov01a10_enum_mbus_code(struct v4l2_subdev *sd, 749 struct v4l2_subdev_state *sd_state, 750 struct v4l2_subdev_mbus_code_enum *code) 751 { 752 if (code->index > 0) 753 return -EINVAL; 754 755 code->code = MEDIA_BUS_FMT_SBGGR10_1X10; 756 757 return 0; 758 } 759 760 static int ov01a10_enum_frame_size(struct v4l2_subdev *sd, 761 struct v4l2_subdev_state *sd_state, 762 struct v4l2_subdev_frame_size_enum *fse) 763 { 764 if (fse->index >= ARRAY_SIZE(supported_modes) || 765 fse->code != MEDIA_BUS_FMT_SBGGR10_1X10) 766 return -EINVAL; 767 768 fse->min_width = supported_modes[fse->index].width; 769 fse->max_width = fse->min_width; 770 fse->min_height = supported_modes[fse->index].height; 771 fse->max_height = fse->min_height; 772 773 return 0; 774 } 775 776 static int ov01a10_get_selection(struct v4l2_subdev *sd, 777 struct v4l2_subdev_state *state, 778 struct v4l2_subdev_selection *sel) 779 { 780 if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) 781 return -EINVAL; 782 783 switch (sel->target) { 784 case V4L2_SEL_TGT_NATIVE_SIZE: 785 case V4L2_SEL_TGT_CROP_BOUNDS: 786 sel->r.top = 0; 787 sel->r.left = 0; 788 sel->r.width = OV01A10_PIXEL_ARRAY_WIDTH; 789 sel->r.height = OV01A10_PIXEL_ARRAY_HEIGHT; 790 return 0; 791 case V4L2_SEL_TGT_CROP: 792 case V4L2_SEL_TGT_CROP_DEFAULT: 793 sel->r.top = (OV01A10_PIXEL_ARRAY_HEIGHT - 794 OV01A10_ACITVE_HEIGHT) / 2; 795 sel->r.left = (OV01A10_PIXEL_ARRAY_WIDTH - 796 OV01A10_ACITVE_WIDTH) / 2; 797 sel->r.width = OV01A10_ACITVE_WIDTH; 798 sel->r.height = OV01A10_ACITVE_HEIGHT; 799 return 0; 800 } 801 802 return -EINVAL; 803 } 804 805 static const struct v4l2_subdev_core_ops ov01a10_core_ops = { 806 .log_status = v4l2_ctrl_subdev_log_status, 807 .subscribe_event = v4l2_ctrl_subdev_subscribe_event, 808 .unsubscribe_event = v4l2_event_subdev_unsubscribe, 809 }; 810 811 static const struct v4l2_subdev_video_ops ov01a10_video_ops = { 812 .s_stream = ov01a10_set_stream, 813 }; 814 815 static const struct v4l2_subdev_pad_ops ov01a10_pad_ops = { 816 .set_fmt = ov01a10_set_format, 817 .get_fmt = v4l2_subdev_get_fmt, 818 .get_selection = ov01a10_get_selection, 819 .enum_mbus_code = ov01a10_enum_mbus_code, 820 .enum_frame_size = ov01a10_enum_frame_size, 821 }; 822 823 static const struct v4l2_subdev_ops ov01a10_subdev_ops = { 824 .core = &ov01a10_core_ops, 825 .video = &ov01a10_video_ops, 826 .pad = &ov01a10_pad_ops, 827 }; 828 829 static const struct v4l2_subdev_internal_ops ov01a10_internal_ops = { 830 .init_state = ov01a10_init_state, 831 }; 832 833 static const struct media_entity_operations ov01a10_subdev_entity_ops = { 834 .link_validate = v4l2_subdev_link_validate, 835 }; 836 837 static int ov01a10_identify_module(struct ov01a10 *ov01a10) 838 { 839 struct i2c_client *client = v4l2_get_subdevdata(&ov01a10->sd); 840 int ret; 841 u32 val; 842 843 ret = ov01a10_read_reg(ov01a10, OV01A10_REG_CHIP_ID, 3, &val); 844 if (ret) 845 return ret; 846 847 if (val != OV01A10_CHIP_ID) { 848 dev_err(&client->dev, "chip id mismatch: %x!=%x\n", 849 OV01A10_CHIP_ID, val); 850 return -EIO; 851 } 852 853 return 0; 854 } 855 856 static void ov01a10_remove(struct i2c_client *client) 857 { 858 struct v4l2_subdev *sd = i2c_get_clientdata(client); 859 860 v4l2_async_unregister_subdev(sd); 861 media_entity_cleanup(&sd->entity); 862 v4l2_ctrl_handler_free(sd->ctrl_handler); 863 864 pm_runtime_disable(&client->dev); 865 pm_runtime_set_suspended(&client->dev); 866 } 867 868 static int ov01a10_probe(struct i2c_client *client) 869 { 870 struct device *dev = &client->dev; 871 struct ov01a10 *ov01a10; 872 int ret = 0; 873 874 ov01a10 = devm_kzalloc(dev, sizeof(*ov01a10), GFP_KERNEL); 875 if (!ov01a10) 876 return -ENOMEM; 877 878 v4l2_i2c_subdev_init(&ov01a10->sd, client, &ov01a10_subdev_ops); 879 ov01a10->sd.internal_ops = &ov01a10_internal_ops; 880 881 ret = ov01a10_identify_module(ov01a10); 882 if (ret) 883 return dev_err_probe(dev, ret, 884 "failed to find sensor\n"); 885 886 ov01a10->cur_mode = &supported_modes[0]; 887 888 ret = ov01a10_init_controls(ov01a10); 889 if (ret) { 890 dev_err(dev, "failed to init controls: %d\n", ret); 891 return ret; 892 } 893 894 ov01a10->sd.state_lock = ov01a10->ctrl_handler.lock; 895 ov01a10->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | 896 V4L2_SUBDEV_FL_HAS_EVENTS; 897 ov01a10->sd.entity.ops = &ov01a10_subdev_entity_ops; 898 ov01a10->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 899 ov01a10->pad.flags = MEDIA_PAD_FL_SOURCE; 900 901 ret = media_entity_pads_init(&ov01a10->sd.entity, 1, &ov01a10->pad); 902 if (ret) { 903 dev_err(dev, "Failed to init entity pads: %d\n", ret); 904 goto err_handler_free; 905 } 906 907 ret = v4l2_subdev_init_finalize(&ov01a10->sd); 908 if (ret) { 909 dev_err(dev, "Failed to allocate subdev state: %d\n", ret); 910 goto err_media_entity_cleanup; 911 } 912 913 /* 914 * Device is already turned on by i2c-core with ACPI domain PM. 915 * Enable runtime PM and turn off the device. 916 */ 917 pm_runtime_set_active(&client->dev); 918 pm_runtime_enable(dev); 919 pm_runtime_idle(dev); 920 921 ret = v4l2_async_register_subdev_sensor(&ov01a10->sd); 922 if (ret < 0) { 923 dev_err(dev, "Failed to register subdev: %d\n", ret); 924 goto err_pm_disable; 925 } 926 927 return 0; 928 929 err_pm_disable: 930 pm_runtime_disable(dev); 931 pm_runtime_set_suspended(&client->dev); 932 933 err_media_entity_cleanup: 934 media_entity_cleanup(&ov01a10->sd.entity); 935 936 err_handler_free: 937 v4l2_ctrl_handler_free(ov01a10->sd.ctrl_handler); 938 939 return ret; 940 } 941 942 #ifdef CONFIG_ACPI 943 static const struct acpi_device_id ov01a10_acpi_ids[] = { 944 { "OVTI01A0" }, 945 { } 946 }; 947 948 MODULE_DEVICE_TABLE(acpi, ov01a10_acpi_ids); 949 #endif 950 951 static struct i2c_driver ov01a10_i2c_driver = { 952 .driver = { 953 .name = "ov01a10", 954 .acpi_match_table = ACPI_PTR(ov01a10_acpi_ids), 955 }, 956 .probe = ov01a10_probe, 957 .remove = ov01a10_remove, 958 }; 959 960 module_i2c_driver(ov01a10_i2c_driver); 961 962 MODULE_AUTHOR("Bingbu Cao <bingbu.cao@intel.com>"); 963 MODULE_AUTHOR("Wang Yating <yating.wang@intel.com>"); 964 MODULE_DESCRIPTION("OmniVision OV01A10 sensor driver"); 965 MODULE_LICENSE("GPL"); 966