1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT) 2 /* 3 * Rockchip ISP1 Driver - Base driver 4 * 5 * Copyright (C) 2019 Collabora, Ltd. 6 * 7 * Based on Rockchip ISP1 driver by Rockchip Electronics Co., Ltd. 8 * Copyright (C) 2017 Rockchip Electronics Co., Ltd. 9 */ 10 11 #include <linux/clk.h> 12 #include <linux/interrupt.h> 13 #include <linux/module.h> 14 #include <linux/of.h> 15 #include <linux/of_graph.h> 16 #include <linux/platform_device.h> 17 #include <linux/pinctrl/consumer.h> 18 #include <linux/pm_runtime.h> 19 #include <media/v4l2-fwnode.h> 20 #include <media/v4l2-mc.h> 21 22 #include "rkisp1-common.h" 23 #include "rkisp1-csi.h" 24 25 /* 26 * ISP Details 27 * ----------- 28 * 29 * ISP Comprises with: 30 * MIPI serial camera interface 31 * Image Signal Processing 32 * Many Image Enhancement Blocks 33 * Crop 34 * Resizer 35 * RBG display ready image 36 * Image Rotation 37 * 38 * ISP Block Diagram 39 * ----------------- 40 * rkisp1-resizer.c rkisp1-capture.c 41 * |====================| |=======================| 42 * rkisp1-isp.c Main Picture Path 43 * |==========================| |===============================================| 44 * +-----------+ +--+--+--+--+ +--------+ +--------+ +-----------+ 45 * | | | | | | | | | | | | | 46 * +--------+ |\ | | | | | | | -->| Crop |->| RSZ |------------->| | 47 * | MIPI |--->| \ | | | | | | | | | | | | | | 48 * +--------+ | | | | |IE|IE|IE|IE| | +--------+ +--------+ | Memory | 49 * |MUX|--->| ISP |->|0 |1 |2 |3 |---+ | Interface | 50 * +--------+ | | | | | | | | | | +--------+ +--------+ +--------+ | | 51 * |Parallel|--->| / | | | | | | | | | | | | | | | | 52 * +--------+ |/ | | | | | | | -->| Crop |->| RSZ |->| RGB |->| | 53 * | | | | | | | | | | | | Rotate | | | 54 * +-----------+ +--+--+--+--+ +--------+ +--------+ +--------+ +-----------+ 55 * ^ 56 * +--------+ | |===============================================| 57 * | DMA |------------------------------------+ Self Picture Path 58 * +--------+ 59 * 60 * rkisp1-stats.c rkisp1-params.c 61 * |===============| |===============| 62 * +---------------+ +---------------+ 63 * | | | | 64 * | ISP | | ISP | 65 * | | | | 66 * +---------------+ +---------------+ 67 * 68 * 69 * Media Topology 70 * -------------- 71 * 72 * +----------+ +----------+ 73 * | Sensor 1 | | Sensor X | 74 * ------------ ... ------------ 75 * | 0 | | 0 | 76 * +----------+ +----------+ 77 * | | 78 * \----\ /----/ 79 * | | 80 * v v 81 * +-------------+ 82 * | 0 | 83 * --------------- 84 * | CSI-2 RX | 85 * --------------- +-----------+ 86 * | 1 | | params | 87 * +-------------+ | (output) | 88 * | +-----------+ 89 * v | 90 * +------+------+ | 91 * | 0 | 1 |<---------+ 92 * |------+------| 93 * | ISP | 94 * |------+------| 95 * +-------------| 2 | 3 |----------+ 96 * | +------+------+ | 97 * | | | 98 * v v v 99 * +- ---------+ +-----------+ +-----------+ 100 * | 0 | | 0 | | stats | 101 * ------------- ------------- | (capture) | 102 * | Resizer | | Resizer | +-----------+ 103 * ------------| ------------| 104 * | 1 | | 1 | 105 * +-----------+ +-----------+ 106 * | | 107 * v v 108 * +-----------+ +-----------+ 109 * | selfpath | | mainpath | 110 * | (capture) | | (capture) | 111 * +-----------+ +-----------+ 112 */ 113 114 struct rkisp1_isr_data { 115 const char *name; 116 irqreturn_t (*isr)(int irq, void *ctx); 117 u32 line_mask; 118 }; 119 120 /* ---------------------------------------------------------------------------- 121 * Sensor DT bindings 122 */ 123 124 static int rkisp1_subdev_notifier_bound(struct v4l2_async_notifier *notifier, 125 struct v4l2_subdev *sd, 126 struct v4l2_async_connection *asc) 127 { 128 struct rkisp1_device *rkisp1 = 129 container_of(notifier, struct rkisp1_device, notifier); 130 struct rkisp1_sensor_async *s_asd = 131 container_of(asc, struct rkisp1_sensor_async, asd); 132 int source_pad; 133 int ret; 134 135 s_asd->sd = sd; 136 137 source_pad = media_entity_get_fwnode_pad(&sd->entity, s_asd->source_ep, 138 MEDIA_PAD_FL_SOURCE); 139 if (source_pad < 0) { 140 dev_err(rkisp1->dev, "failed to find source pad for %s\n", 141 sd->name); 142 return source_pad; 143 } 144 145 if (s_asd->port == 0) 146 return rkisp1_csi_link_sensor(rkisp1, sd, s_asd, source_pad); 147 148 ret = media_create_pad_link(&sd->entity, source_pad, 149 &rkisp1->isp.sd.entity, 150 RKISP1_ISP_PAD_SINK_VIDEO, 151 !s_asd->index ? MEDIA_LNK_FL_ENABLED : 0); 152 if (ret) { 153 dev_err(rkisp1->dev, "failed to link source pad of %s\n", 154 sd->name); 155 return ret; 156 } 157 158 return 0; 159 } 160 161 static int rkisp1_subdev_notifier_complete(struct v4l2_async_notifier *notifier) 162 { 163 struct rkisp1_device *rkisp1 = 164 container_of(notifier, struct rkisp1_device, notifier); 165 166 return v4l2_device_register_subdev_nodes(&rkisp1->v4l2_dev); 167 } 168 169 static void rkisp1_subdev_notifier_destroy(struct v4l2_async_connection *asc) 170 { 171 struct rkisp1_sensor_async *rk_asd = 172 container_of(asc, struct rkisp1_sensor_async, asd); 173 174 fwnode_handle_put(rk_asd->source_ep); 175 } 176 177 static const struct v4l2_async_notifier_operations rkisp1_subdev_notifier_ops = { 178 .bound = rkisp1_subdev_notifier_bound, 179 .complete = rkisp1_subdev_notifier_complete, 180 .destroy = rkisp1_subdev_notifier_destroy, 181 }; 182 183 static int rkisp1_subdev_notifier_register(struct rkisp1_device *rkisp1) 184 { 185 struct v4l2_async_notifier *ntf = &rkisp1->notifier; 186 struct fwnode_handle *fwnode = dev_fwnode(rkisp1->dev); 187 struct fwnode_handle *ep; 188 unsigned int index = 0; 189 int ret = 0; 190 191 v4l2_async_nf_init(ntf, &rkisp1->v4l2_dev); 192 193 ntf->ops = &rkisp1_subdev_notifier_ops; 194 195 fwnode_graph_for_each_endpoint(fwnode, ep) { 196 struct fwnode_handle *port; 197 struct v4l2_fwnode_endpoint vep = { }; 198 struct rkisp1_sensor_async *rk_asd; 199 struct fwnode_handle *source; 200 u32 reg = 0; 201 202 /* Select the bus type based on the port. */ 203 port = fwnode_get_parent(ep); 204 fwnode_property_read_u32(port, "reg", ®); 205 fwnode_handle_put(port); 206 207 switch (reg) { 208 case 0: 209 /* MIPI CSI-2 port */ 210 if (!(rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2)) { 211 dev_err(rkisp1->dev, 212 "internal CSI must be available for port 0\n"); 213 ret = -EINVAL; 214 break; 215 } 216 217 vep.bus_type = V4L2_MBUS_CSI2_DPHY; 218 break; 219 220 case 1: 221 /* 222 * Parallel port. The bus-type property in DT is 223 * mandatory for port 1, it will be used to determine if 224 * it's PARALLEL or BT656. 225 */ 226 vep.bus_type = V4L2_MBUS_UNKNOWN; 227 break; 228 } 229 230 /* Parse the endpoint and validate the bus type. */ 231 ret = v4l2_fwnode_endpoint_parse(ep, &vep); 232 if (ret) { 233 dev_err(rkisp1->dev, "failed to parse endpoint %pfw\n", 234 ep); 235 break; 236 } 237 238 if (vep.base.port == 1) { 239 if (vep.bus_type != V4L2_MBUS_PARALLEL && 240 vep.bus_type != V4L2_MBUS_BT656) { 241 dev_err(rkisp1->dev, 242 "port 1 must be parallel or BT656\n"); 243 ret = -EINVAL; 244 break; 245 } 246 } 247 248 /* Add the async subdev to the notifier. */ 249 source = fwnode_graph_get_remote_endpoint(ep); 250 if (!source) { 251 dev_err(rkisp1->dev, 252 "endpoint %pfw has no remote endpoint\n", 253 ep); 254 ret = -ENODEV; 255 break; 256 } 257 258 rk_asd = v4l2_async_nf_add_fwnode(ntf, source, 259 struct rkisp1_sensor_async); 260 if (IS_ERR(rk_asd)) { 261 fwnode_handle_put(source); 262 ret = PTR_ERR(rk_asd); 263 break; 264 } 265 266 rk_asd->index = index++; 267 rk_asd->source_ep = source; 268 rk_asd->mbus_type = vep.bus_type; 269 rk_asd->port = vep.base.port; 270 271 if (vep.bus_type == V4L2_MBUS_CSI2_DPHY) { 272 rk_asd->mbus_flags = vep.bus.mipi_csi2.flags; 273 rk_asd->lanes = vep.bus.mipi_csi2.num_data_lanes; 274 } else { 275 rk_asd->mbus_flags = vep.bus.parallel.flags; 276 } 277 278 dev_dbg(rkisp1->dev, "registered ep id %d, bus type %u, %u lanes\n", 279 vep.base.id, rk_asd->mbus_type, rk_asd->lanes); 280 } 281 282 if (ret) { 283 fwnode_handle_put(ep); 284 v4l2_async_nf_cleanup(ntf); 285 return ret; 286 } 287 288 if (!index) 289 dev_dbg(rkisp1->dev, "no remote subdevice found\n"); 290 291 ret = v4l2_async_nf_register(ntf); 292 if (ret) { 293 v4l2_async_nf_cleanup(ntf); 294 return ret; 295 } 296 297 return 0; 298 } 299 300 /* ---------------------------------------------------------------------------- 301 * Power 302 */ 303 304 static int __maybe_unused rkisp1_runtime_suspend(struct device *dev) 305 { 306 struct rkisp1_device *rkisp1 = dev_get_drvdata(dev); 307 308 clk_bulk_disable_unprepare(rkisp1->clk_size, rkisp1->clks); 309 return pinctrl_pm_select_sleep_state(dev); 310 } 311 312 static int __maybe_unused rkisp1_runtime_resume(struct device *dev) 313 { 314 struct rkisp1_device *rkisp1 = dev_get_drvdata(dev); 315 int ret; 316 317 ret = pinctrl_pm_select_default_state(dev); 318 if (ret) 319 return ret; 320 ret = clk_bulk_prepare_enable(rkisp1->clk_size, rkisp1->clks); 321 if (ret) 322 return ret; 323 324 return 0; 325 } 326 327 static const struct dev_pm_ops rkisp1_pm_ops = { 328 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 329 pm_runtime_force_resume) 330 SET_RUNTIME_PM_OPS(rkisp1_runtime_suspend, rkisp1_runtime_resume, NULL) 331 }; 332 333 /* ---------------------------------------------------------------------------- 334 * Core 335 */ 336 337 static int rkisp1_create_links(struct rkisp1_device *rkisp1) 338 { 339 unsigned int i; 340 int ret; 341 342 if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2) { 343 /* Link the CSI receiver to the ISP. */ 344 ret = media_create_pad_link(&rkisp1->csi.sd.entity, 345 RKISP1_CSI_PAD_SRC, 346 &rkisp1->isp.sd.entity, 347 RKISP1_ISP_PAD_SINK_VIDEO, 348 MEDIA_LNK_FL_ENABLED); 349 if (ret) 350 return ret; 351 } 352 353 /* create ISP->RSZ->CAP links */ 354 for (i = 0; i < 2; i++) { 355 struct media_entity *resizer = 356 &rkisp1->resizer_devs[i].sd.entity; 357 struct media_entity *capture = 358 &rkisp1->capture_devs[i].vnode.vdev.entity; 359 360 ret = media_create_pad_link(&rkisp1->isp.sd.entity, 361 RKISP1_ISP_PAD_SOURCE_VIDEO, 362 resizer, RKISP1_RSZ_PAD_SINK, 363 MEDIA_LNK_FL_ENABLED); 364 if (ret) 365 return ret; 366 367 ret = media_create_pad_link(resizer, RKISP1_RSZ_PAD_SRC, 368 capture, 0, 369 MEDIA_LNK_FL_ENABLED | 370 MEDIA_LNK_FL_IMMUTABLE); 371 if (ret) 372 return ret; 373 } 374 375 /* params links */ 376 ret = media_create_pad_link(&rkisp1->params.vnode.vdev.entity, 0, 377 &rkisp1->isp.sd.entity, 378 RKISP1_ISP_PAD_SINK_PARAMS, 379 MEDIA_LNK_FL_ENABLED | 380 MEDIA_LNK_FL_IMMUTABLE); 381 if (ret) 382 return ret; 383 384 /* 3A stats links */ 385 return media_create_pad_link(&rkisp1->isp.sd.entity, 386 RKISP1_ISP_PAD_SOURCE_STATS, 387 &rkisp1->stats.vnode.vdev.entity, 0, 388 MEDIA_LNK_FL_ENABLED | 389 MEDIA_LNK_FL_IMMUTABLE); 390 } 391 392 static void rkisp1_entities_unregister(struct rkisp1_device *rkisp1) 393 { 394 if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2) 395 rkisp1_csi_unregister(rkisp1); 396 rkisp1_params_unregister(rkisp1); 397 rkisp1_stats_unregister(rkisp1); 398 rkisp1_capture_devs_unregister(rkisp1); 399 rkisp1_resizer_devs_unregister(rkisp1); 400 rkisp1_isp_unregister(rkisp1); 401 } 402 403 static int rkisp1_entities_register(struct rkisp1_device *rkisp1) 404 { 405 int ret; 406 407 ret = rkisp1_isp_register(rkisp1); 408 if (ret) 409 goto error; 410 411 ret = rkisp1_resizer_devs_register(rkisp1); 412 if (ret) 413 goto error; 414 415 ret = rkisp1_capture_devs_register(rkisp1); 416 if (ret) 417 goto error; 418 419 ret = rkisp1_stats_register(rkisp1); 420 if (ret) 421 goto error; 422 423 ret = rkisp1_params_register(rkisp1); 424 if (ret) 425 goto error; 426 427 if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2) { 428 ret = rkisp1_csi_register(rkisp1); 429 if (ret) 430 goto error; 431 } 432 433 ret = rkisp1_create_links(rkisp1); 434 if (ret) 435 goto error; 436 437 return 0; 438 439 error: 440 rkisp1_entities_unregister(rkisp1); 441 return ret; 442 } 443 444 static irqreturn_t rkisp1_isr(int irq, void *ctx) 445 { 446 irqreturn_t ret = IRQ_NONE; 447 448 /* 449 * Call rkisp1_capture_isr() first to handle the frame that 450 * potentially completed using the current frame_sequence number before 451 * it is potentially incremented by rkisp1_isp_isr() in the vertical 452 * sync. 453 */ 454 455 if (rkisp1_capture_isr(irq, ctx) == IRQ_HANDLED) 456 ret = IRQ_HANDLED; 457 458 if (rkisp1_isp_isr(irq, ctx) == IRQ_HANDLED) 459 ret = IRQ_HANDLED; 460 461 if (rkisp1_csi_isr(irq, ctx) == IRQ_HANDLED) 462 ret = IRQ_HANDLED; 463 464 return ret; 465 } 466 467 static const char * const px30_isp_clks[] = { 468 "isp", 469 "aclk", 470 "hclk", 471 "pclk", 472 }; 473 474 static const struct rkisp1_isr_data px30_isp_isrs[] = { 475 { "isp", rkisp1_isp_isr, BIT(RKISP1_IRQ_ISP) }, 476 { "mi", rkisp1_capture_isr, BIT(RKISP1_IRQ_MI) }, 477 { "mipi", rkisp1_csi_isr, BIT(RKISP1_IRQ_MIPI) }, 478 }; 479 480 static const struct rkisp1_info px30_isp_info = { 481 .clks = px30_isp_clks, 482 .clk_size = ARRAY_SIZE(px30_isp_clks), 483 .isrs = px30_isp_isrs, 484 .isr_size = ARRAY_SIZE(px30_isp_isrs), 485 .isp_ver = RKISP1_V12, 486 .features = RKISP1_FEATURE_MIPI_CSI2, 487 }; 488 489 static const char * const rk3399_isp_clks[] = { 490 "isp", 491 "aclk", 492 "hclk", 493 }; 494 495 static const struct rkisp1_isr_data rk3399_isp_isrs[] = { 496 { NULL, rkisp1_isr, BIT(RKISP1_IRQ_ISP) | BIT(RKISP1_IRQ_MI) | BIT(RKISP1_IRQ_MIPI) }, 497 }; 498 499 static const struct rkisp1_info rk3399_isp_info = { 500 .clks = rk3399_isp_clks, 501 .clk_size = ARRAY_SIZE(rk3399_isp_clks), 502 .isrs = rk3399_isp_isrs, 503 .isr_size = ARRAY_SIZE(rk3399_isp_isrs), 504 .isp_ver = RKISP1_V10, 505 .features = RKISP1_FEATURE_MIPI_CSI2, 506 }; 507 508 static const struct of_device_id rkisp1_of_match[] = { 509 { 510 .compatible = "rockchip,px30-cif-isp", 511 .data = &px30_isp_info, 512 }, 513 { 514 .compatible = "rockchip,rk3399-cif-isp", 515 .data = &rk3399_isp_info, 516 }, 517 {}, 518 }; 519 MODULE_DEVICE_TABLE(of, rkisp1_of_match); 520 521 static int rkisp1_probe(struct platform_device *pdev) 522 { 523 const struct rkisp1_info *info; 524 struct device *dev = &pdev->dev; 525 struct rkisp1_device *rkisp1; 526 struct v4l2_device *v4l2_dev; 527 unsigned int i; 528 int ret, irq; 529 u32 cif_id; 530 531 rkisp1 = devm_kzalloc(dev, sizeof(*rkisp1), GFP_KERNEL); 532 if (!rkisp1) 533 return -ENOMEM; 534 535 info = of_device_get_match_data(dev); 536 rkisp1->info = info; 537 538 dev_set_drvdata(dev, rkisp1); 539 rkisp1->dev = dev; 540 541 mutex_init(&rkisp1->stream_lock); 542 543 rkisp1->base_addr = devm_platform_ioremap_resource(pdev, 0); 544 if (IS_ERR(rkisp1->base_addr)) 545 return PTR_ERR(rkisp1->base_addr); 546 547 for (unsigned int il = 0; il < ARRAY_SIZE(rkisp1->irqs); ++il) 548 rkisp1->irqs[il] = -1; 549 550 for (i = 0; i < info->isr_size; i++) { 551 irq = info->isrs[i].name 552 ? platform_get_irq_byname(pdev, info->isrs[i].name) 553 : platform_get_irq(pdev, i); 554 if (irq < 0) 555 return irq; 556 557 for (unsigned int il = 0; il < ARRAY_SIZE(rkisp1->irqs); ++il) { 558 if (info->isrs[i].line_mask & BIT(il)) 559 rkisp1->irqs[il] = irq; 560 } 561 562 ret = devm_request_irq(dev, irq, info->isrs[i].isr, 0, 563 dev_driver_string(dev), dev); 564 if (ret) { 565 dev_err(dev, "request irq failed: %d\n", ret); 566 return ret; 567 } 568 } 569 570 for (i = 0; i < info->clk_size; i++) 571 rkisp1->clks[i].id = info->clks[i]; 572 ret = devm_clk_bulk_get(dev, info->clk_size, rkisp1->clks); 573 if (ret) 574 return ret; 575 rkisp1->clk_size = info->clk_size; 576 577 pm_runtime_enable(&pdev->dev); 578 579 ret = pm_runtime_resume_and_get(&pdev->dev); 580 if (ret) 581 goto err_pm_runtime_disable; 582 583 cif_id = rkisp1_read(rkisp1, RKISP1_CIF_VI_ID); 584 dev_dbg(rkisp1->dev, "CIF_ID 0x%08x\n", cif_id); 585 586 pm_runtime_put(&pdev->dev); 587 588 rkisp1->media_dev.hw_revision = info->isp_ver; 589 strscpy(rkisp1->media_dev.model, RKISP1_DRIVER_NAME, 590 sizeof(rkisp1->media_dev.model)); 591 rkisp1->media_dev.dev = &pdev->dev; 592 strscpy(rkisp1->media_dev.bus_info, RKISP1_BUS_INFO, 593 sizeof(rkisp1->media_dev.bus_info)); 594 media_device_init(&rkisp1->media_dev); 595 596 v4l2_dev = &rkisp1->v4l2_dev; 597 v4l2_dev->mdev = &rkisp1->media_dev; 598 strscpy(v4l2_dev->name, RKISP1_DRIVER_NAME, sizeof(v4l2_dev->name)); 599 600 ret = v4l2_device_register(rkisp1->dev, &rkisp1->v4l2_dev); 601 if (ret) 602 goto err_media_dev_cleanup; 603 604 ret = media_device_register(&rkisp1->media_dev); 605 if (ret) { 606 dev_err(dev, "Failed to register media device: %d\n", ret); 607 goto err_unreg_v4l2_dev; 608 } 609 610 if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2) { 611 ret = rkisp1_csi_init(rkisp1); 612 if (ret) 613 goto err_unreg_media_dev; 614 } 615 616 ret = rkisp1_entities_register(rkisp1); 617 if (ret) 618 goto err_cleanup_csi; 619 620 ret = rkisp1_subdev_notifier_register(rkisp1); 621 if (ret) 622 goto err_unreg_entities; 623 624 rkisp1_debug_init(rkisp1); 625 626 return 0; 627 628 err_unreg_entities: 629 rkisp1_entities_unregister(rkisp1); 630 err_cleanup_csi: 631 if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2) 632 rkisp1_csi_cleanup(rkisp1); 633 err_unreg_media_dev: 634 media_device_unregister(&rkisp1->media_dev); 635 err_unreg_v4l2_dev: 636 v4l2_device_unregister(&rkisp1->v4l2_dev); 637 err_media_dev_cleanup: 638 media_device_cleanup(&rkisp1->media_dev); 639 err_pm_runtime_disable: 640 pm_runtime_disable(&pdev->dev); 641 return ret; 642 } 643 644 static void rkisp1_remove(struct platform_device *pdev) 645 { 646 struct rkisp1_device *rkisp1 = platform_get_drvdata(pdev); 647 648 v4l2_async_nf_unregister(&rkisp1->notifier); 649 v4l2_async_nf_cleanup(&rkisp1->notifier); 650 651 rkisp1_entities_unregister(rkisp1); 652 if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2) 653 rkisp1_csi_cleanup(rkisp1); 654 rkisp1_debug_cleanup(rkisp1); 655 656 media_device_unregister(&rkisp1->media_dev); 657 v4l2_device_unregister(&rkisp1->v4l2_dev); 658 659 media_device_cleanup(&rkisp1->media_dev); 660 661 pm_runtime_disable(&pdev->dev); 662 } 663 664 static struct platform_driver rkisp1_drv = { 665 .driver = { 666 .name = RKISP1_DRIVER_NAME, 667 .of_match_table = of_match_ptr(rkisp1_of_match), 668 .pm = &rkisp1_pm_ops, 669 }, 670 .probe = rkisp1_probe, 671 .remove_new = rkisp1_remove, 672 }; 673 674 module_platform_driver(rkisp1_drv); 675 MODULE_DESCRIPTION("Rockchip ISP1 platform driver"); 676 MODULE_LICENSE("Dual MIT/GPL"); 677