1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/module.h> 3 #include <linux/i2c.h> 4 #include <linux/dmi.h> 5 #include <linux/efi.h> 6 #include <linux/pci.h> 7 #include <linux/acpi.h> 8 #include <linux/clk.h> 9 #include <linux/delay.h> 10 #include <media/v4l2-subdev.h> 11 #include <linux/mfd/intel_soc_pmic.h> 12 #include <linux/regulator/consumer.h> 13 #include <linux/gpio/consumer.h> 14 #include <linux/gpio.h> 15 #include <linux/platform_device.h> 16 #include "../../include/linux/atomisp_platform.h" 17 #include "../../include/linux/atomisp_gmin_platform.h" 18 19 #define MAX_SUBDEVS 8 20 21 enum clock_rate { 22 VLV2_CLK_XTAL_25_0MHz = 0, 23 VLV2_CLK_PLL_19P2MHZ = 1 24 }; 25 26 #define CLK_RATE_19_2MHZ 19200000 27 #define CLK_RATE_25_0MHZ 25000000 28 29 /* Valid clock number range from 0 to 5 */ 30 #define MAX_CLK_COUNT 5 31 32 /* X-Powers AXP288 register set */ 33 #define ALDO1_SEL_REG 0x28 34 #define ALDO1_CTRL3_REG 0x13 35 #define ALDO1_2P8V 0x16 36 #define ALDO1_CTRL3_SHIFT 0x05 37 38 #define ELDO_CTRL_REG 0x12 39 40 #define ELDO1_SEL_REG 0x19 41 #define ELDO1_1P8V 0x16 42 #define ELDO1_CTRL_SHIFT 0x00 43 44 #define ELDO2_SEL_REG 0x1a 45 #define ELDO2_1P8V 0x16 46 #define ELDO2_CTRL_SHIFT 0x01 47 48 /* TI SND9039 PMIC register set */ 49 #define LDO9_REG 0x49 50 #define LDO10_REG 0x4a 51 #define LDO11_REG 0x4b 52 53 #define LDO_2P8V_ON 0x2f /* 0x2e selects 2.85V ... */ 54 #define LDO_2P8V_OFF 0x2e /* ... bottom bit is "enabled" */ 55 56 #define LDO_1P8V_ON 0x59 /* 0x58 selects 1.80V ... */ 57 #define LDO_1P8V_OFF 0x58 /* ... bottom bit is "enabled" */ 58 59 /* CRYSTAL COVE PMIC register set */ 60 #define CRYSTAL_1P8V_REG 0x57 61 #define CRYSTAL_2P8V_REG 0x5d 62 #define CRYSTAL_ON 0x63 63 #define CRYSTAL_OFF 0x62 64 65 struct gmin_subdev { 66 struct v4l2_subdev *subdev; 67 enum clock_rate clock_src; 68 struct clk *pmc_clk; 69 struct gpio_desc *gpio0; 70 struct gpio_desc *gpio1; 71 struct regulator *v1p8_reg; 72 struct regulator *v2p8_reg; 73 struct regulator *v1p2_reg; 74 struct regulator *v2p8_vcm_reg; 75 enum atomisp_camera_port csi_port; 76 unsigned int csi_lanes; 77 enum atomisp_input_format csi_fmt; 78 enum atomisp_bayer_order csi_bayer; 79 80 bool clock_on; 81 bool v1p8_on; 82 bool v2p8_on; 83 bool v1p2_on; 84 bool v2p8_vcm_on; 85 86 int v1p8_gpio; 87 int v2p8_gpio; 88 89 u8 pwm_i2c_addr; 90 91 /* For PMIC AXP */ 92 int eldo1_sel_reg, eldo1_1p8v, eldo1_ctrl_shift; 93 int eldo2_sel_reg, eldo2_1p8v, eldo2_ctrl_shift; 94 }; 95 96 static struct gmin_subdev gmin_subdevs[MAX_SUBDEVS]; 97 98 /* ACPI HIDs for the PMICs that could be used by this driver */ 99 #define PMIC_ACPI_AXP "INT33F4" /* XPower AXP288 PMIC */ 100 #define PMIC_ACPI_TI "INT33F5" /* Dollar Cove TI PMIC */ 101 #define PMIC_ACPI_CRYSTALCOVE "INT33FD" /* Crystal Cove PMIC */ 102 103 #define PMIC_PLATFORM_TI "intel_soc_pmic_chtdc_ti" 104 105 static enum { 106 PMIC_UNSET = 0, 107 PMIC_REGULATOR, 108 PMIC_AXP, 109 PMIC_TI, 110 PMIC_CRYSTALCOVE 111 } pmic_id; 112 113 static const char *pmic_name[] = { 114 [PMIC_UNSET] = "ACPI device PM", 115 [PMIC_REGULATOR] = "regulator driver", 116 [PMIC_AXP] = "XPower AXP288 PMIC", 117 [PMIC_TI] = "Dollar Cove TI PMIC", 118 [PMIC_CRYSTALCOVE] = "Crystal Cove PMIC", 119 }; 120 121 /* The atomisp uses type==0 for the end-of-list marker, so leave space. */ 122 static struct intel_v4l2_subdev_table pdata_subdevs[MAX_SUBDEVS + 1]; 123 124 static const struct atomisp_platform_data pdata = { 125 .subdevs = pdata_subdevs, 126 }; 127 128 static LIST_HEAD(vcm_devices); 129 static DEFINE_MUTEX(vcm_lock); 130 131 static struct gmin_subdev *find_gmin_subdev(struct v4l2_subdev *subdev); 132 133 /* 134 * Legacy/stub behavior copied from upstream platform_camera.c. The 135 * atomisp driver relies on these values being non-NULL in a few 136 * places, even though they are hard-coded in all current 137 * implementations. 138 */ 139 const struct atomisp_camera_caps *atomisp_get_default_camera_caps(void) 140 { 141 static const struct atomisp_camera_caps caps = { 142 .sensor_num = 1, 143 .sensor = { 144 { .stream_num = 1, }, 145 }, 146 }; 147 return ∩︀ 148 } 149 EXPORT_SYMBOL_GPL(atomisp_get_default_camera_caps); 150 151 const struct atomisp_platform_data *atomisp_get_platform_data(void) 152 { 153 return &pdata; 154 } 155 EXPORT_SYMBOL_GPL(atomisp_get_platform_data); 156 157 int atomisp_register_i2c_module(struct v4l2_subdev *subdev, 158 struct camera_sensor_platform_data *plat_data, 159 enum intel_v4l2_subdev_type type) 160 { 161 int i; 162 struct i2c_board_info *bi; 163 struct gmin_subdev *gs; 164 struct i2c_client *client = v4l2_get_subdevdata(subdev); 165 struct acpi_device *adev = ACPI_COMPANION(&client->dev); 166 167 dev_info(&client->dev, "register atomisp i2c module type %d\n", type); 168 169 /* The windows driver model (and thus most BIOSes by default) 170 * uses ACPI runtime power management for camera devices, but 171 * we don't. Disable it, or else the rails will be needlessly 172 * tickled during suspend/resume. This has caused power and 173 * performance issues on multiple devices. 174 */ 175 adev->power.flags.power_resources = 0; 176 177 for (i = 0; i < MAX_SUBDEVS; i++) 178 if (!pdata.subdevs[i].type) 179 break; 180 181 if (pdata.subdevs[i].type) 182 return -ENOMEM; 183 184 /* Note subtlety of initialization order: at the point where 185 * this registration API gets called, the platform data 186 * callbacks have probably already been invoked, so the 187 * gmin_subdev struct is already initialized for us. 188 */ 189 gs = find_gmin_subdev(subdev); 190 if (!gs) 191 return -ENODEV; 192 193 pdata.subdevs[i].type = type; 194 pdata.subdevs[i].port = gs->csi_port; 195 pdata.subdevs[i].subdev = subdev; 196 pdata.subdevs[i].v4l2_subdev.i2c_adapter_id = client->adapter->nr; 197 198 /* Convert i2c_client to i2c_board_info */ 199 bi = &pdata.subdevs[i].v4l2_subdev.board_info; 200 memcpy(bi->type, client->name, I2C_NAME_SIZE); 201 bi->flags = client->flags; 202 bi->addr = client->addr; 203 bi->irq = client->irq; 204 bi->platform_data = plat_data; 205 206 return 0; 207 } 208 EXPORT_SYMBOL_GPL(atomisp_register_i2c_module); 209 210 struct v4l2_subdev *atomisp_gmin_find_subdev(struct i2c_adapter *adapter, 211 struct i2c_board_info *board_info) 212 { 213 int i; 214 215 for (i = 0; i < MAX_SUBDEVS && pdata.subdevs[i].type; i++) { 216 struct intel_v4l2_subdev_table *sd = &pdata.subdevs[i]; 217 218 if (sd->v4l2_subdev.i2c_adapter_id == adapter->nr && 219 sd->v4l2_subdev.board_info.addr == board_info->addr) 220 return sd->subdev; 221 } 222 return NULL; 223 } 224 EXPORT_SYMBOL_GPL(atomisp_gmin_find_subdev); 225 226 int atomisp_gmin_remove_subdev(struct v4l2_subdev *sd) 227 { 228 int i, j; 229 230 if (!sd) 231 return 0; 232 233 for (i = 0; i < MAX_SUBDEVS; i++) { 234 if (pdata.subdevs[i].subdev == sd) { 235 for (j = i + 1; j <= MAX_SUBDEVS; j++) 236 pdata.subdevs[j - 1] = pdata.subdevs[j]; 237 } 238 if (gmin_subdevs[i].subdev == sd) { 239 if (gmin_subdevs[i].gpio0) 240 gpiod_put(gmin_subdevs[i].gpio0); 241 gmin_subdevs[i].gpio0 = NULL; 242 if (gmin_subdevs[i].gpio1) 243 gpiod_put(gmin_subdevs[i].gpio1); 244 gmin_subdevs[i].gpio1 = NULL; 245 if (pmic_id == PMIC_REGULATOR) { 246 regulator_put(gmin_subdevs[i].v1p8_reg); 247 regulator_put(gmin_subdevs[i].v2p8_reg); 248 regulator_put(gmin_subdevs[i].v1p2_reg); 249 regulator_put(gmin_subdevs[i].v2p8_vcm_reg); 250 } 251 gmin_subdevs[i].subdev = NULL; 252 } 253 } 254 return 0; 255 } 256 EXPORT_SYMBOL_GPL(atomisp_gmin_remove_subdev); 257 258 struct gmin_cfg_var { 259 const char *name, *val; 260 }; 261 262 static struct gmin_cfg_var ffrd8_vars[] = { 263 { "INTCF1B:00_ImxId", "0x134" }, 264 { "INTCF1B:00_CsiPort", "1" }, 265 { "INTCF1B:00_CsiLanes", "4" }, 266 { "INTCF1B:00_CamClk", "0" }, 267 {}, 268 }; 269 270 /* Cribbed from MCG defaults in the mt9m114 driver, not actually verified 271 * vs. T100 hardware 272 */ 273 static struct gmin_cfg_var t100_vars[] = { 274 { "INT33F0:00_CsiPort", "0" }, 275 { "INT33F0:00_CsiLanes", "1" }, 276 { "INT33F0:00_CamClk", "1" }, 277 {}, 278 }; 279 280 static struct gmin_cfg_var mrd7_vars[] = { 281 {"INT33F8:00_CamType", "1"}, 282 {"INT33F8:00_CsiPort", "1"}, 283 {"INT33F8:00_CsiLanes", "2"}, 284 {"INT33F8:00_CsiFmt", "13"}, 285 {"INT33F8:00_CsiBayer", "0"}, 286 {"INT33F8:00_CamClk", "0"}, 287 288 {"INT33F9:00_CamType", "1"}, 289 {"INT33F9:00_CsiPort", "0"}, 290 {"INT33F9:00_CsiLanes", "1"}, 291 {"INT33F9:00_CsiFmt", "13"}, 292 {"INT33F9:00_CsiBayer", "0"}, 293 {"INT33F9:00_CamClk", "1"}, 294 {}, 295 }; 296 297 static struct gmin_cfg_var ecs7_vars[] = { 298 {"INT33BE:00_CsiPort", "1"}, 299 {"INT33BE:00_CsiLanes", "2"}, 300 {"INT33BE:00_CsiFmt", "13"}, 301 {"INT33BE:00_CsiBayer", "2"}, 302 {"INT33BE:00_CamClk", "0"}, 303 304 {"INT33F0:00_CsiPort", "0"}, 305 {"INT33F0:00_CsiLanes", "1"}, 306 {"INT33F0:00_CsiFmt", "13"}, 307 {"INT33F0:00_CsiBayer", "0"}, 308 {"INT33F0:00_CamClk", "1"}, 309 {"gmin_V2P8GPIO", "402"}, 310 {}, 311 }; 312 313 static struct gmin_cfg_var i8880_vars[] = { 314 {"XXOV2680:00_CsiPort", "1"}, 315 {"XXOV2680:00_CsiLanes", "1"}, 316 {"XXOV2680:00_CamClk", "0"}, 317 318 {"XXGC0310:00_CsiPort", "0"}, 319 {"XXGC0310:00_CsiLanes", "1"}, 320 {"XXGC0310:00_CamClk", "1"}, 321 {}, 322 }; 323 324 static const struct dmi_system_id gmin_vars[] = { 325 { 326 .ident = "BYT-T FFD8", 327 .matches = { 328 DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"), 329 }, 330 .driver_data = ffrd8_vars, 331 }, 332 { 333 .ident = "T100TA", 334 .matches = { 335 DMI_MATCH(DMI_BOARD_NAME, "T100TA"), 336 }, 337 .driver_data = t100_vars, 338 }, 339 { 340 .ident = "MRD7", 341 .matches = { 342 DMI_MATCH(DMI_BOARD_NAME, "TABLET"), 343 DMI_MATCH(DMI_BOARD_VERSION, "MRD 7"), 344 }, 345 .driver_data = mrd7_vars, 346 }, 347 { 348 .ident = "ST70408", 349 .matches = { 350 DMI_MATCH(DMI_BOARD_NAME, "ST70408"), 351 }, 352 .driver_data = ecs7_vars, 353 }, 354 { 355 .ident = "VTA0803", 356 .matches = { 357 DMI_MATCH(DMI_BOARD_NAME, "VTA0803"), 358 }, 359 .driver_data = i8880_vars, 360 }, 361 {} 362 }; 363 364 #define GMIN_CFG_VAR_EFI_GUID EFI_GUID(0xecb54cd9, 0xe5ae, 0x4fdc, \ 365 0xa9, 0x71, 0xe8, 0x77, \ 366 0x75, 0x60, 0x68, 0xf7) 367 368 static const guid_t atomisp_dsm_guid = GUID_INIT(0xdc2f6c4f, 0x045b, 0x4f1d, 369 0x97, 0xb9, 0x88, 0x2a, 370 0x68, 0x60, 0xa4, 0xbe); 371 372 #define CFG_VAR_NAME_MAX 64 373 374 #define GMIN_PMC_CLK_NAME 14 /* "pmc_plt_clk_[0..5]" */ 375 static char gmin_pmc_clk_name[GMIN_PMC_CLK_NAME]; 376 377 static struct i2c_client *gmin_i2c_dev_exists(struct device *dev, char *name, 378 struct i2c_client **client) 379 { 380 struct acpi_device *adev; 381 struct device *d; 382 383 adev = acpi_dev_get_first_match_dev(name, NULL, -1); 384 if (!adev) 385 return NULL; 386 387 d = bus_find_device_by_acpi_dev(&i2c_bus_type, adev); 388 acpi_dev_put(adev); 389 if (!d) 390 return NULL; 391 392 *client = i2c_verify_client(d); 393 put_device(d); 394 395 dev_dbg(dev, "found '%s' at address 0x%02x, adapter %d\n", 396 (*client)->name, (*client)->addr, (*client)->adapter->nr); 397 return *client; 398 } 399 400 static int gmin_i2c_write(struct device *dev, u16 i2c_addr, u8 reg, 401 u32 value, u32 mask) 402 { 403 int ret; 404 405 /* 406 * FIXME: Right now, the intel_pmic driver just write values 407 * directly at the regmap, instead of properly implementing 408 * i2c_transfer() mechanism. Let's use the same interface here, 409 * as otherwise we may face issues. 410 */ 411 412 dev_dbg(dev, 413 "I2C write, addr: 0x%02x, reg: 0x%02x, value: 0x%02x, mask: 0x%02x\n", 414 i2c_addr, reg, value, mask); 415 416 ret = intel_soc_pmic_exec_mipi_pmic_seq_element(i2c_addr, reg, value, mask); 417 if (ret == -EOPNOTSUPP) 418 dev_err(dev, 419 "ACPI didn't mapped the OpRegion needed to access I2C address 0x%02x.\n" 420 "Need to compile the kernel using CONFIG_*_PMIC_OPREGION settings\n", 421 i2c_addr); 422 423 return ret; 424 } 425 426 static int atomisp_get_acpi_power(struct device *dev, acpi_handle handle) 427 { 428 char name[5]; 429 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 430 struct acpi_buffer b_name = { sizeof(name), name }; 431 union acpi_object *package, *element; 432 acpi_handle rhandle; 433 acpi_status status; 434 int clock_num = -1; 435 int i; 436 437 status = acpi_evaluate_object(handle, "_PR0", NULL, &buffer); 438 if (!ACPI_SUCCESS(status)) 439 return -1; 440 441 package = buffer.pointer; 442 443 if (!buffer.length || !package 444 || package->type != ACPI_TYPE_PACKAGE 445 || !package->package.count) 446 goto fail; 447 448 for (i = 0; i < package->package.count; i++) { 449 element = &package->package.elements[i]; 450 451 if (element->type != ACPI_TYPE_LOCAL_REFERENCE) 452 continue; 453 454 rhandle = element->reference.handle; 455 if (!rhandle) 456 goto fail; 457 458 acpi_get_name(rhandle, ACPI_SINGLE_NAME, &b_name); 459 460 dev_dbg(dev, "Found PM resource '%s'\n", name); 461 if (strlen(name) == 4 && !strncmp(name, "CLK", 3)) { 462 if (name[3] >= '0' && name[3] <= '4') 463 clock_num = name[3] - '0'; 464 #if 0 465 /* 466 * We could abort here, but let's parse all resources, 467 * as this is helpful for debugging purposes 468 */ 469 if (clock_num >= 0) 470 break; 471 #endif 472 } 473 } 474 475 fail: 476 ACPI_FREE(buffer.pointer); 477 478 return clock_num; 479 } 480 481 static u8 gmin_get_pmic_id_and_addr(struct device *dev) 482 { 483 struct i2c_client *power; 484 static u8 pmic_i2c_addr; 485 486 if (pmic_id) 487 return pmic_i2c_addr; 488 489 if (gmin_i2c_dev_exists(dev, PMIC_ACPI_TI, &power)) 490 pmic_id = PMIC_TI; 491 else if (gmin_i2c_dev_exists(dev, PMIC_ACPI_AXP, &power)) 492 pmic_id = PMIC_AXP; 493 else if (gmin_i2c_dev_exists(dev, PMIC_ACPI_CRYSTALCOVE, &power)) 494 pmic_id = PMIC_CRYSTALCOVE; 495 else 496 pmic_id = PMIC_REGULATOR; 497 498 pmic_i2c_addr = power ? power->addr : 0; 499 return pmic_i2c_addr; 500 } 501 502 static int gmin_detect_pmic(struct v4l2_subdev *subdev) 503 { 504 struct i2c_client *client = v4l2_get_subdevdata(subdev); 505 struct device *dev = &client->dev; 506 u8 pmic_i2c_addr; 507 508 pmic_i2c_addr = gmin_get_pmic_id_and_addr(dev); 509 dev_info(dev, "gmin: power management provided via %s (i2c addr 0x%02x)\n", 510 pmic_name[pmic_id], pmic_i2c_addr); 511 return pmic_i2c_addr; 512 } 513 514 static int gmin_subdev_add(struct gmin_subdev *gs) 515 { 516 struct i2c_client *client = v4l2_get_subdevdata(gs->subdev); 517 struct device *dev = &client->dev; 518 struct acpi_device *adev; 519 acpi_handle handle; 520 int ret, clock_num = -1; 521 522 handle = ACPI_HANDLE(dev); 523 adev = ACPI_COMPANION(dev); 524 525 dev_info(&client->dev, "%s: ACPI detected it on bus ID=%s, HID=%s\n", 526 __func__, acpi_device_bid(adev), acpi_device_hid(adev)); 527 528 /*WA:CHT requires XTAL clock as PLL is not stable.*/ 529 gs->clock_src = gmin_get_var_int(dev, false, "ClkSrc", 530 VLV2_CLK_PLL_19P2MHZ); 531 532 gs->csi_port = gmin_get_var_int(dev, false, "CsiPort", 0); 533 gs->csi_lanes = gmin_get_var_int(dev, false, "CsiLanes", 1); 534 535 gs->gpio0 = gpiod_get_index(dev, NULL, 0, GPIOD_OUT_LOW); 536 if (IS_ERR(gs->gpio0)) 537 gs->gpio0 = NULL; 538 else 539 dev_info(dev, "will handle gpio0 via ACPI\n"); 540 541 gs->gpio1 = gpiod_get_index(dev, NULL, 1, GPIOD_OUT_LOW); 542 if (IS_ERR(gs->gpio1)) 543 gs->gpio1 = NULL; 544 else 545 dev_info(dev, "will handle gpio1 via ACPI\n"); 546 547 /* 548 * Those are used only when there is an external regulator apart 549 * from the PMIC that would be providing power supply, like on the 550 * two cases below: 551 * 552 * The ECS E7 board drives camera 2.8v from an external regulator 553 * instead of the PMIC. There's a gmin_CamV2P8 config variable 554 * that specifies the GPIO to handle this particular case, 555 * but this needs a broader architecture for handling camera power. 556 * 557 * The CHT RVP board drives camera 1.8v from an* external regulator 558 * instead of the PMIC just like ECS E7 board. 559 */ 560 561 gs->v1p8_gpio = gmin_get_var_int(dev, true, "V1P8GPIO", -1); 562 gs->v2p8_gpio = gmin_get_var_int(dev, true, "V2P8GPIO", -1); 563 564 /* 565 * FIXME: 566 * 567 * The ACPI handling code checks for the _PR? tables in order to 568 * know what is required to switch the device from power state 569 * D0 (_PR0) up to D3COLD (_PR3). 570 * 571 * The adev->flags.power_manageable is set to true if the device 572 * has a _PR0 table, which can be checked by calling 573 * acpi_device_power_manageable(adev). 574 * 575 * However, this only says that the device can be set to power off 576 * mode. 577 * 578 * At least on the DSDT tables we've seen so far, there's no _PR3, 579 * nor _PS3 (which would have a somewhat similar effect). 580 * So, using ACPI for power management won't work, except if adding 581 * an ACPI override logic somewhere. 582 * 583 * So, at least for the existing devices we know, the check below 584 * will always be false. 585 */ 586 if (acpi_device_can_wakeup(adev) && 587 acpi_device_can_poweroff(adev)) { 588 dev_info(dev, 589 "gmin: power management provided via device PM\n"); 590 return 0; 591 } 592 593 /* 594 * The code below is here due to backward compatibility with devices 595 * whose ACPI BIOS may not contain everything that would be needed 596 * in order to set clocks and do power management. 597 */ 598 599 /* 600 * According with : 601 * https://github.com/projectceladon/hardware-intel-kernelflinger/blob/master/doc/fastboot.md 602 * 603 * The "CamClk" EFI var is set via fastboot on some Android devices, 604 * and seems to contain the number of the clock used to feed the 605 * sensor. 606 * 607 * On systems with a proper ACPI table, this is given via the _PR0 608 * power resource table. The logic below should first check if there 609 * is a power resource already, falling back to the EFI vars detection 610 * otherwise. 611 */ 612 613 /* Try first to use ACPI to get the clock resource */ 614 if (acpi_device_power_manageable(adev)) 615 clock_num = atomisp_get_acpi_power(dev, handle); 616 617 /* Fall-back use EFI and/or DMI match */ 618 if (clock_num < 0) 619 clock_num = gmin_get_var_int(dev, false, "CamClk", 0); 620 621 if (clock_num < 0 || clock_num > MAX_CLK_COUNT) { 622 dev_err(dev, "Invalid clock number\n"); 623 return -EINVAL; 624 } 625 626 snprintf(gmin_pmc_clk_name, sizeof(gmin_pmc_clk_name), 627 "%s_%d", "pmc_plt_clk", clock_num); 628 629 gs->pmc_clk = devm_clk_get(dev, gmin_pmc_clk_name); 630 if (IS_ERR(gs->pmc_clk)) { 631 ret = PTR_ERR(gs->pmc_clk); 632 dev_err(dev, "Failed to get clk from %s: %d\n", gmin_pmc_clk_name, ret); 633 return ret; 634 } 635 dev_info(dev, "Will use CLK%d (%s)\n", clock_num, gmin_pmc_clk_name); 636 637 /* 638 * The firmware might enable the clock at 639 * boot (this information may or may not 640 * be reflected in the enable clock register). 641 * To change the rate we must disable the clock 642 * first to cover these cases. Due to common 643 * clock framework restrictions that do not allow 644 * to disable a clock that has not been enabled, 645 * we need to enable the clock first. 646 */ 647 ret = clk_prepare_enable(gs->pmc_clk); 648 if (!ret) 649 clk_disable_unprepare(gs->pmc_clk); 650 651 switch (pmic_id) { 652 case PMIC_REGULATOR: 653 gs->v1p8_reg = regulator_get(dev, "V1P8SX"); 654 gs->v2p8_reg = regulator_get(dev, "V2P8SX"); 655 656 gs->v1p2_reg = regulator_get(dev, "V1P2A"); 657 gs->v2p8_vcm_reg = regulator_get(dev, "VPROG4B"); 658 659 /* Note: ideally we would initialize v[12]p8_on to the 660 * output of regulator_is_enabled(), but sadly that 661 * API is broken with the current drivers, returning 662 * "1" for a regulator that will then emit a 663 * "unbalanced disable" WARNing if we try to disable 664 * it. 665 */ 666 break; 667 668 case PMIC_AXP: 669 gs->eldo1_1p8v = gmin_get_var_int(dev, false, 670 "eldo1_1p8v", 671 ELDO1_1P8V); 672 gs->eldo1_sel_reg = gmin_get_var_int(dev, false, 673 "eldo1_sel_reg", 674 ELDO1_SEL_REG); 675 gs->eldo1_ctrl_shift = gmin_get_var_int(dev, false, 676 "eldo1_ctrl_shift", 677 ELDO1_CTRL_SHIFT); 678 gs->eldo2_1p8v = gmin_get_var_int(dev, false, 679 "eldo2_1p8v", 680 ELDO2_1P8V); 681 gs->eldo2_sel_reg = gmin_get_var_int(dev, false, 682 "eldo2_sel_reg", 683 ELDO2_SEL_REG); 684 gs->eldo2_ctrl_shift = gmin_get_var_int(dev, false, 685 "eldo2_ctrl_shift", 686 ELDO2_CTRL_SHIFT); 687 break; 688 689 default: 690 break; 691 } 692 693 return 0; 694 } 695 696 static struct gmin_subdev *find_gmin_subdev(struct v4l2_subdev *subdev) 697 { 698 int i; 699 700 for (i = 0; i < MAX_SUBDEVS; i++) 701 if (gmin_subdevs[i].subdev == subdev) 702 return &gmin_subdevs[i]; 703 return NULL; 704 } 705 706 static struct gmin_subdev *find_free_gmin_subdev_slot(void) 707 { 708 unsigned int i; 709 710 for (i = 0; i < MAX_SUBDEVS; i++) 711 if (gmin_subdevs[i].subdev == NULL) 712 return &gmin_subdevs[i]; 713 return NULL; 714 } 715 716 static int axp_regulator_set(struct device *dev, struct gmin_subdev *gs, 717 int sel_reg, u8 setting, 718 int ctrl_reg, int shift, bool on) 719 { 720 int ret; 721 int val; 722 723 ret = gmin_i2c_write(dev, gs->pwm_i2c_addr, sel_reg, setting, 0xff); 724 if (ret) 725 return ret; 726 727 val = on ? 1 << shift : 0; 728 729 ret = gmin_i2c_write(dev, gs->pwm_i2c_addr, sel_reg, val, 1 << shift); 730 if (ret) 731 return ret; 732 733 return 0; 734 } 735 736 static int axp_v1p8_on(struct device *dev, struct gmin_subdev *gs) 737 { 738 int ret; 739 740 ret = axp_regulator_set(dev, gs, gs->eldo2_sel_reg, gs->eldo2_1p8v, 741 ELDO_CTRL_REG, gs->eldo2_ctrl_shift, true); 742 if (ret) 743 return ret; 744 745 /* 746 * This sleep comes out of the gc2235 driver, which is the 747 * only one I currently see that wants to set both 1.8v rails. 748 */ 749 usleep_range(110, 150); 750 751 ret = axp_regulator_set(dev, gs, gs->eldo1_sel_reg, gs->eldo1_1p8v, 752 ELDO_CTRL_REG, gs->eldo1_ctrl_shift, true); 753 if (ret) 754 return ret; 755 756 ret = axp_regulator_set(dev, gs, gs->eldo2_sel_reg, gs->eldo2_1p8v, 757 ELDO_CTRL_REG, gs->eldo2_ctrl_shift, false); 758 return ret; 759 } 760 761 static int axp_v1p8_off(struct device *dev, struct gmin_subdev *gs) 762 { 763 int ret; 764 765 ret = axp_regulator_set(dev, gs, gs->eldo1_sel_reg, gs->eldo1_1p8v, 766 ELDO_CTRL_REG, gs->eldo1_ctrl_shift, false); 767 if (ret) 768 return ret; 769 770 ret = axp_regulator_set(dev, gs, gs->eldo2_sel_reg, gs->eldo2_1p8v, 771 ELDO_CTRL_REG, gs->eldo2_ctrl_shift, false); 772 return ret; 773 } 774 775 static int gmin_gpio0_ctrl(struct v4l2_subdev *subdev, int on) 776 { 777 struct gmin_subdev *gs = find_gmin_subdev(subdev); 778 779 if (gs) { 780 gpiod_set_value(gs->gpio0, on); 781 return 0; 782 } 783 return -EINVAL; 784 } 785 786 static int gmin_gpio1_ctrl(struct v4l2_subdev *subdev, int on) 787 { 788 struct gmin_subdev *gs = find_gmin_subdev(subdev); 789 790 if (gs) { 791 gpiod_set_value(gs->gpio1, on); 792 return 0; 793 } 794 return -EINVAL; 795 } 796 797 static int gmin_v1p2_ctrl(struct v4l2_subdev *subdev, int on) 798 { 799 struct gmin_subdev *gs = find_gmin_subdev(subdev); 800 801 if (!gs || gs->v1p2_on == on) 802 return 0; 803 gs->v1p2_on = on; 804 805 /* use regulator for PMIC */ 806 if (gs->v1p2_reg) { 807 if (on) 808 return regulator_enable(gs->v1p2_reg); 809 else 810 return regulator_disable(gs->v1p2_reg); 811 } 812 813 /* TODO:v1p2 may need to extend to other PMICs */ 814 815 return -EINVAL; 816 } 817 818 static int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on) 819 { 820 struct gmin_subdev *gs = find_gmin_subdev(subdev); 821 int ret; 822 int value; 823 824 if (gs->v1p8_gpio >= 0) { 825 pr_info("atomisp_gmin_platform: 1.8v power on GPIO %d\n", 826 gs->v1p8_gpio); 827 ret = gpio_request(gs->v1p8_gpio, "camera_v1p8_en"); 828 if (!ret) 829 ret = gpio_direction_output(gs->v1p8_gpio, 0); 830 if (ret) 831 pr_err("V1P8 GPIO initialization failed\n"); 832 } 833 834 if (!gs || gs->v1p8_on == on) 835 return 0; 836 gs->v1p8_on = on; 837 838 if (gs->v1p8_gpio >= 0) 839 gpio_set_value(gs->v1p8_gpio, on); 840 841 if (gs->v1p8_reg) { 842 regulator_set_voltage(gs->v1p8_reg, 1800000, 1800000); 843 if (on) 844 return regulator_enable(gs->v1p8_reg); 845 else 846 return regulator_disable(gs->v1p8_reg); 847 } 848 849 switch (pmic_id) { 850 case PMIC_AXP: 851 if (on) 852 return axp_v1p8_on(subdev->dev, gs); 853 else 854 return axp_v1p8_off(subdev->dev, gs); 855 case PMIC_TI: 856 value = on ? LDO_1P8V_ON : LDO_1P8V_OFF; 857 858 return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr, 859 LDO10_REG, value, 0xff); 860 case PMIC_CRYSTALCOVE: 861 value = on ? CRYSTAL_ON : CRYSTAL_OFF; 862 863 return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr, 864 CRYSTAL_1P8V_REG, value, 0xff); 865 default: 866 dev_err(subdev->dev, "Couldn't set power mode for v1p2\n"); 867 } 868 869 return -EINVAL; 870 } 871 872 static int gmin_v2p8_ctrl(struct v4l2_subdev *subdev, int on) 873 { 874 struct gmin_subdev *gs = find_gmin_subdev(subdev); 875 int ret; 876 int value; 877 878 if (gs->v2p8_gpio >= 0) { 879 pr_info("atomisp_gmin_platform: 2.8v power on GPIO %d\n", 880 gs->v2p8_gpio); 881 ret = gpio_request(gs->v2p8_gpio, "camera_v2p8"); 882 if (!ret) 883 ret = gpio_direction_output(gs->v2p8_gpio, 0); 884 if (ret) 885 pr_err("V2P8 GPIO initialization failed\n"); 886 } 887 888 if (!gs || gs->v2p8_on == on) 889 return 0; 890 gs->v2p8_on = on; 891 892 if (gs->v2p8_gpio >= 0) 893 gpio_set_value(gs->v2p8_gpio, on); 894 895 if (gs->v2p8_reg) { 896 regulator_set_voltage(gs->v2p8_reg, 2900000, 2900000); 897 if (on) 898 return regulator_enable(gs->v2p8_reg); 899 else 900 return regulator_disable(gs->v2p8_reg); 901 } 902 903 switch (pmic_id) { 904 case PMIC_AXP: 905 return axp_regulator_set(subdev->dev, gs, ALDO1_SEL_REG, 906 ALDO1_2P8V, ALDO1_CTRL3_REG, 907 ALDO1_CTRL3_SHIFT, on); 908 case PMIC_TI: 909 value = on ? LDO_2P8V_ON : LDO_2P8V_OFF; 910 911 return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr, 912 LDO9_REG, value, 0xff); 913 case PMIC_CRYSTALCOVE: 914 value = on ? CRYSTAL_ON : CRYSTAL_OFF; 915 916 return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr, 917 CRYSTAL_2P8V_REG, value, 0xff); 918 default: 919 dev_err(subdev->dev, "Couldn't set power mode for v1p2\n"); 920 } 921 922 return -EINVAL; 923 } 924 925 static int gmin_acpi_pm_ctrl(struct v4l2_subdev *subdev, int on) 926 { 927 int ret = 0; 928 struct gmin_subdev *gs = find_gmin_subdev(subdev); 929 struct i2c_client *client = v4l2_get_subdevdata(subdev); 930 struct acpi_device *adev = ACPI_COMPANION(&client->dev); 931 932 /* Use the ACPI power management to control it */ 933 on = !!on; 934 if (gs->clock_on == on) 935 return 0; 936 937 dev_dbg(subdev->dev, "Setting power state to %s\n", 938 on ? "on" : "off"); 939 940 if (on) 941 ret = acpi_device_set_power(adev, 942 ACPI_STATE_D0); 943 else 944 ret = acpi_device_set_power(adev, 945 ACPI_STATE_D3_COLD); 946 947 if (!ret) 948 gs->clock_on = on; 949 else 950 dev_err(subdev->dev, "Couldn't set power state to %s\n", 951 on ? "on" : "off"); 952 953 return ret; 954 } 955 956 static int gmin_flisclk_ctrl(struct v4l2_subdev *subdev, int on) 957 { 958 int ret = 0; 959 struct gmin_subdev *gs = find_gmin_subdev(subdev); 960 struct i2c_client *client = v4l2_get_subdevdata(subdev); 961 962 if (gs->clock_on == !!on) 963 return 0; 964 965 if (on) { 966 ret = clk_set_rate(gs->pmc_clk, 967 gs->clock_src ? CLK_RATE_19_2MHZ : CLK_RATE_25_0MHZ); 968 969 if (ret) 970 dev_err(&client->dev, "unable to set PMC rate %d\n", 971 gs->clock_src); 972 973 ret = clk_prepare_enable(gs->pmc_clk); 974 if (ret == 0) 975 gs->clock_on = true; 976 } else { 977 clk_disable_unprepare(gs->pmc_clk); 978 gs->clock_on = false; 979 } 980 981 return ret; 982 } 983 984 static int gmin_csi_cfg(struct v4l2_subdev *sd, int flag) 985 { 986 struct i2c_client *client = v4l2_get_subdevdata(sd); 987 struct gmin_subdev *gs = find_gmin_subdev(sd); 988 989 if (!client || !gs) 990 return -ENODEV; 991 992 return camera_sensor_csi(sd, gs->csi_port, gs->csi_lanes, 993 gs->csi_fmt, gs->csi_bayer, flag); 994 } 995 996 static struct camera_vcm_control *gmin_get_vcm_ctrl(struct v4l2_subdev *subdev, 997 char *camera_module) 998 { 999 struct i2c_client *client = v4l2_get_subdevdata(subdev); 1000 struct gmin_subdev *gs = find_gmin_subdev(subdev); 1001 struct camera_vcm_control *vcm; 1002 1003 if (!client || !gs) 1004 return NULL; 1005 1006 if (!camera_module) 1007 return NULL; 1008 1009 mutex_lock(&vcm_lock); 1010 list_for_each_entry(vcm, &vcm_devices, list) { 1011 if (!strcmp(camera_module, vcm->camera_module)) { 1012 mutex_unlock(&vcm_lock); 1013 return vcm; 1014 } 1015 } 1016 1017 mutex_unlock(&vcm_lock); 1018 return NULL; 1019 } 1020 1021 static struct camera_sensor_platform_data pmic_gmin_plat = { 1022 .gpio0_ctrl = gmin_gpio0_ctrl, 1023 .gpio1_ctrl = gmin_gpio1_ctrl, 1024 .v1p8_ctrl = gmin_v1p8_ctrl, 1025 .v2p8_ctrl = gmin_v2p8_ctrl, 1026 .v1p2_ctrl = gmin_v1p2_ctrl, 1027 .flisclk_ctrl = gmin_flisclk_ctrl, 1028 .csi_cfg = gmin_csi_cfg, 1029 .get_vcm_ctrl = gmin_get_vcm_ctrl, 1030 }; 1031 1032 static struct camera_sensor_platform_data acpi_gmin_plat = { 1033 .gpio0_ctrl = gmin_gpio0_ctrl, 1034 .gpio1_ctrl = gmin_gpio1_ctrl, 1035 .v1p8_ctrl = gmin_acpi_pm_ctrl, 1036 .v2p8_ctrl = gmin_acpi_pm_ctrl, 1037 .v1p2_ctrl = gmin_acpi_pm_ctrl, 1038 .flisclk_ctrl = gmin_acpi_pm_ctrl, 1039 .csi_cfg = gmin_csi_cfg, 1040 .get_vcm_ctrl = gmin_get_vcm_ctrl, 1041 }; 1042 1043 struct camera_sensor_platform_data *gmin_camera_platform_data( 1044 struct v4l2_subdev *subdev, 1045 enum atomisp_input_format csi_format, 1046 enum atomisp_bayer_order csi_bayer) 1047 { 1048 u8 pmic_i2c_addr = gmin_detect_pmic(subdev); 1049 struct gmin_subdev *gs; 1050 1051 gs = find_free_gmin_subdev_slot(); 1052 gs->subdev = subdev; 1053 gs->csi_fmt = csi_format; 1054 gs->csi_bayer = csi_bayer; 1055 gs->pwm_i2c_addr = pmic_i2c_addr; 1056 1057 gmin_subdev_add(gs); 1058 if (gs->pmc_clk) 1059 return &pmic_gmin_plat; 1060 else 1061 return &acpi_gmin_plat; 1062 } 1063 EXPORT_SYMBOL_GPL(gmin_camera_platform_data); 1064 1065 int atomisp_gmin_register_vcm_control(struct camera_vcm_control *vcmCtrl) 1066 { 1067 if (!vcmCtrl) 1068 return -EINVAL; 1069 1070 mutex_lock(&vcm_lock); 1071 list_add_tail(&vcmCtrl->list, &vcm_devices); 1072 mutex_unlock(&vcm_lock); 1073 1074 return 0; 1075 } 1076 EXPORT_SYMBOL_GPL(atomisp_gmin_register_vcm_control); 1077 1078 static int gmin_get_hardcoded_var(struct device *dev, 1079 struct gmin_cfg_var *varlist, 1080 const char *var8, char *out, size_t *out_len) 1081 { 1082 struct gmin_cfg_var *gv; 1083 1084 for (gv = varlist; gv->name; gv++) { 1085 size_t vl; 1086 1087 if (strcmp(var8, gv->name)) 1088 continue; 1089 1090 dev_info(dev, "Found DMI entry for '%s'\n", var8); 1091 1092 vl = strlen(gv->val); 1093 if (vl > *out_len - 1) 1094 return -ENOSPC; 1095 1096 strscpy(out, gv->val, *out_len); 1097 *out_len = vl; 1098 return 0; 1099 } 1100 1101 return -EINVAL; 1102 } 1103 1104 1105 static int gmin_get_config_dsm_var(struct device *dev, 1106 const char *var, 1107 char *out, size_t *out_len) 1108 { 1109 acpi_handle handle = ACPI_HANDLE(dev); 1110 union acpi_object *obj, *cur = NULL; 1111 int i; 1112 1113 /* 1114 * The data reported by "CamClk" seems to be either 0 or 1 at the 1115 * _DSM table. 1116 * 1117 * At the ACPI tables we looked so far, this is not related to the 1118 * actual clock source for the sensor, which is given by the 1119 * _PR0 ACPI table. So, ignore it, as otherwise this will be 1120 * set to a wrong value. 1121 */ 1122 if (!strcmp(var, "CamClk")) 1123 return -EINVAL; 1124 1125 obj = acpi_evaluate_dsm(handle, &atomisp_dsm_guid, 0, 0, NULL); 1126 if (!obj) { 1127 dev_info_once(dev, "Didn't find ACPI _DSM table.\n"); 1128 return -EINVAL; 1129 } 1130 1131 /* Return on unexpected object type */ 1132 if (obj->type != ACPI_TYPE_PACKAGE) 1133 return -EINVAL; 1134 1135 #if 0 /* Just for debugging purposes */ 1136 for (i = 0; i < obj->package.count; i++) { 1137 union acpi_object *cur = &obj->package.elements[i]; 1138 1139 if (cur->type == ACPI_TYPE_INTEGER) 1140 dev_info(dev, "object #%d, type %d, value: %lld\n", 1141 i, cur->type, cur->integer.value); 1142 else if (cur->type == ACPI_TYPE_STRING) 1143 dev_info(dev, "object #%d, type %d, string: %s\n", 1144 i, cur->type, cur->string.pointer); 1145 else 1146 dev_info(dev, "object #%d, type %d\n", 1147 i, cur->type); 1148 } 1149 #endif 1150 1151 /* Seek for the desired var */ 1152 for (i = 0; i < obj->package.count - 1; i += 2) { 1153 if (obj->package.elements[i].type == ACPI_TYPE_STRING && 1154 !strcmp(obj->package.elements[i].string.pointer, var)) { 1155 /* Next element should be the required value */ 1156 cur = &obj->package.elements[i + 1]; 1157 break; 1158 } 1159 } 1160 1161 if (!cur) { 1162 dev_info(dev, "didn't found _DSM entry for '%s'\n", var); 1163 ACPI_FREE(obj); 1164 return -EINVAL; 1165 } 1166 1167 /* 1168 * While it could be possible to have an ACPI_TYPE_INTEGER, 1169 * and read the value from cur->integer.value, the table 1170 * seen so far uses the string type. So, produce a warning 1171 * if it founds something different than string, letting it 1172 * to fall back to the old code. 1173 */ 1174 if (cur && cur->type != ACPI_TYPE_STRING) { 1175 dev_info(dev, "found non-string _DSM entry for '%s'\n", var); 1176 ACPI_FREE(obj); 1177 return -EINVAL; 1178 } 1179 1180 dev_info(dev, "found _DSM entry for '%s': %s\n", var, 1181 cur->string.pointer); 1182 strscpy(out, cur->string.pointer, *out_len); 1183 *out_len = strlen(cur->string.pointer); 1184 1185 ACPI_FREE(obj); 1186 return 0; 1187 } 1188 1189 /* Retrieves a device-specific configuration variable. The dev 1190 * argument should be a device with an ACPI companion, as all 1191 * configuration is based on firmware ID. 1192 */ 1193 static int gmin_get_config_var(struct device *maindev, 1194 bool is_gmin, 1195 const char *var, 1196 char *out, size_t *out_len) 1197 { 1198 efi_char16_t var16[CFG_VAR_NAME_MAX]; 1199 const struct dmi_system_id *id; 1200 struct device *dev = maindev; 1201 char var8[CFG_VAR_NAME_MAX]; 1202 struct efivar_entry *ev; 1203 int i, ret; 1204 1205 /* For sensors, try first to use the _DSM table */ 1206 if (!is_gmin) { 1207 ret = gmin_get_config_dsm_var(maindev, var, out, out_len); 1208 if (!ret) 1209 return 0; 1210 } 1211 1212 /* Fall-back to other approaches */ 1213 1214 if (!is_gmin && ACPI_COMPANION(dev)) 1215 dev = &ACPI_COMPANION(dev)->dev; 1216 1217 if (!is_gmin) 1218 ret = snprintf(var8, sizeof(var8), "%s_%s", dev_name(dev), var); 1219 else 1220 ret = snprintf(var8, sizeof(var8), "gmin_%s", var); 1221 1222 if (ret < 0 || ret >= sizeof(var8) - 1) 1223 return -EINVAL; 1224 1225 /* First check a hard-coded list of board-specific variables. 1226 * Some device firmwares lack the ability to set EFI variables at 1227 * runtime. 1228 */ 1229 id = dmi_first_match(gmin_vars); 1230 if (id) { 1231 ret = gmin_get_hardcoded_var(maindev, id->driver_data, var8, 1232 out, out_len); 1233 if (!ret) 1234 return 0; 1235 } 1236 1237 /* Our variable names are ASCII by construction, but EFI names 1238 * are wide chars. Convert and zero-pad. 1239 */ 1240 memset(var16, 0, sizeof(var16)); 1241 for (i = 0; i < sizeof(var8) && var8[i]; i++) 1242 var16[i] = var8[i]; 1243 1244 /* Not sure this API usage is kosher; efivar_entry_get()'s 1245 * implementation simply uses VariableName and VendorGuid from 1246 * the struct and ignores the rest, but it seems like there 1247 * ought to be an "official" efivar_entry registered 1248 * somewhere? 1249 */ 1250 ev = kzalloc(sizeof(*ev), GFP_KERNEL); 1251 if (!ev) 1252 return -ENOMEM; 1253 memcpy(&ev->var.VariableName, var16, sizeof(var16)); 1254 ev->var.VendorGuid = GMIN_CFG_VAR_EFI_GUID; 1255 ev->var.DataSize = *out_len; 1256 1257 ret = efivar_entry_get(ev, &ev->var.Attributes, 1258 &ev->var.DataSize, ev->var.Data); 1259 if (ret == 0) { 1260 memcpy(out, ev->var.Data, ev->var.DataSize); 1261 *out_len = ev->var.DataSize; 1262 dev_info(maindev, "found EFI entry for '%s'\n", var8); 1263 } else if (is_gmin) { 1264 dev_info(maindev, "Failed to find EFI gmin variable %s\n", var8); 1265 } else { 1266 dev_info(maindev, "Failed to find EFI variable %s\n", var8); 1267 } 1268 1269 kfree(ev); 1270 1271 return ret; 1272 } 1273 1274 int gmin_get_var_int(struct device *dev, bool is_gmin, const char *var, int def) 1275 { 1276 char val[CFG_VAR_NAME_MAX]; 1277 size_t len = sizeof(val); 1278 long result; 1279 int ret; 1280 1281 ret = gmin_get_config_var(dev, is_gmin, var, val, &len); 1282 if (!ret) { 1283 val[len] = 0; 1284 ret = kstrtol(val, 0, &result); 1285 } else { 1286 dev_info(dev, "%s: using default (%d)\n", var, def); 1287 } 1288 1289 return ret ? def : result; 1290 } 1291 EXPORT_SYMBOL_GPL(gmin_get_var_int); 1292 1293 int camera_sensor_csi(struct v4l2_subdev *sd, u32 port, 1294 u32 lanes, u32 format, u32 bayer_order, int flag) 1295 { 1296 struct i2c_client *client = v4l2_get_subdevdata(sd); 1297 struct camera_mipi_info *csi = NULL; 1298 1299 if (flag) { 1300 csi = kzalloc(sizeof(*csi), GFP_KERNEL); 1301 if (!csi) 1302 return -ENOMEM; 1303 csi->port = port; 1304 csi->num_lanes = lanes; 1305 csi->input_format = format; 1306 csi->raw_bayer_order = bayer_order; 1307 v4l2_set_subdev_hostdata(sd, (void *)csi); 1308 csi->metadata_format = ATOMISP_INPUT_FORMAT_EMBEDDED; 1309 csi->metadata_effective_width = NULL; 1310 dev_info(&client->dev, 1311 "camera pdata: port: %d lanes: %d order: %8.8x\n", 1312 port, lanes, bayer_order); 1313 } else { 1314 csi = v4l2_get_subdev_hostdata(sd); 1315 kfree(csi); 1316 } 1317 1318 return 0; 1319 } 1320 EXPORT_SYMBOL_GPL(camera_sensor_csi); 1321 1322 /* PCI quirk: The BYT ISP advertises PCI runtime PM but it doesn't 1323 * work. Disable so the kernel framework doesn't hang the device 1324 * trying. The driver itself does direct calls to the PUNIT to manage 1325 * ISP power. 1326 */ 1327 static void isp_pm_cap_fixup(struct pci_dev *pdev) 1328 { 1329 dev_info(&pdev->dev, "Disabling PCI power management on camera ISP\n"); 1330 pdev->pm_cap = 0; 1331 } 1332 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0f38, isp_pm_cap_fixup); 1333 1334 MODULE_DESCRIPTION("Ancillary routines for binding ACPI devices"); 1335 MODULE_LICENSE("GPL"); 1336