1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver 4 * 5 * Copyright (C) 2013 Samsung Electronics Co., Ltd. 6 * 7 * Authors: Sylwester Nawrocki <s.nawrocki@samsung.com> 8 * Younghwan Joo <yhwan.joo@samsung.com> 9 */ 10 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__ 11 12 #include <linux/device.h> 13 #include <linux/debugfs.h> 14 #include <linux/delay.h> 15 #include <linux/errno.h> 16 #include <linux/firmware.h> 17 #include <linux/interrupt.h> 18 #include <linux/kernel.h> 19 #include <linux/module.h> 20 #include <linux/i2c.h> 21 #include <linux/of_irq.h> 22 #include <linux/of_address.h> 23 #include <linux/of_graph.h> 24 #include <linux/of_platform.h> 25 #include <linux/platform_device.h> 26 #include <linux/pm_runtime.h> 27 #include <linux/slab.h> 28 #include <linux/types.h> 29 #include <linux/videodev2.h> 30 #include <media/videobuf2-dma-contig.h> 31 32 #include "media-dev.h" 33 #include "fimc-is.h" 34 #include "fimc-is-command.h" 35 #include "fimc-is-errno.h" 36 #include "fimc-is-i2c.h" 37 #include "fimc-is-param.h" 38 #include "fimc-is-regs.h" 39 40 41 static char *fimc_is_clocks[ISS_CLKS_MAX] = { 42 [ISS_CLK_PPMUISPX] = "ppmuispx", 43 [ISS_CLK_PPMUISPMX] = "ppmuispmx", 44 [ISS_CLK_LITE0] = "lite0", 45 [ISS_CLK_LITE1] = "lite1", 46 [ISS_CLK_MPLL] = "mpll", 47 [ISS_CLK_ISP] = "isp", 48 [ISS_CLK_DRC] = "drc", 49 [ISS_CLK_FD] = "fd", 50 [ISS_CLK_MCUISP] = "mcuisp", 51 [ISS_CLK_GICISP] = "gicisp", 52 [ISS_CLK_PWM_ISP] = "pwm_isp", 53 [ISS_CLK_MCUCTL_ISP] = "mcuctl_isp", 54 [ISS_CLK_UART] = "uart", 55 [ISS_CLK_ISP_DIV0] = "ispdiv0", 56 [ISS_CLK_ISP_DIV1] = "ispdiv1", 57 [ISS_CLK_MCUISP_DIV0] = "mcuispdiv0", 58 [ISS_CLK_MCUISP_DIV1] = "mcuispdiv1", 59 [ISS_CLK_ACLK200] = "aclk200", 60 [ISS_CLK_ACLK200_DIV] = "div_aclk200", 61 [ISS_CLK_ACLK400MCUISP] = "aclk400mcuisp", 62 [ISS_CLK_ACLK400MCUISP_DIV] = "div_aclk400mcuisp", 63 }; 64 65 static void fimc_is_put_clocks(struct fimc_is *is) 66 { 67 int i; 68 69 for (i = 0; i < ISS_CLKS_MAX; i++) { 70 if (IS_ERR(is->clocks[i])) 71 continue; 72 clk_put(is->clocks[i]); 73 is->clocks[i] = ERR_PTR(-EINVAL); 74 } 75 } 76 77 static int fimc_is_get_clocks(struct fimc_is *is) 78 { 79 int i, ret; 80 81 for (i = 0; i < ISS_CLKS_MAX; i++) 82 is->clocks[i] = ERR_PTR(-EINVAL); 83 84 for (i = 0; i < ISS_CLKS_MAX; i++) { 85 is->clocks[i] = clk_get(&is->pdev->dev, fimc_is_clocks[i]); 86 if (IS_ERR(is->clocks[i])) { 87 ret = PTR_ERR(is->clocks[i]); 88 goto err; 89 } 90 } 91 92 return 0; 93 err: 94 fimc_is_put_clocks(is); 95 dev_err(&is->pdev->dev, "failed to get clock: %s\n", 96 fimc_is_clocks[i]); 97 return ret; 98 } 99 100 static int fimc_is_setup_clocks(struct fimc_is *is) 101 { 102 int ret; 103 104 ret = clk_set_parent(is->clocks[ISS_CLK_ACLK200], 105 is->clocks[ISS_CLK_ACLK200_DIV]); 106 if (ret < 0) 107 return ret; 108 109 ret = clk_set_parent(is->clocks[ISS_CLK_ACLK400MCUISP], 110 is->clocks[ISS_CLK_ACLK400MCUISP_DIV]); 111 if (ret < 0) 112 return ret; 113 114 ret = clk_set_rate(is->clocks[ISS_CLK_ISP_DIV0], ACLK_AXI_FREQUENCY); 115 if (ret < 0) 116 return ret; 117 118 ret = clk_set_rate(is->clocks[ISS_CLK_ISP_DIV1], ACLK_AXI_FREQUENCY); 119 if (ret < 0) 120 return ret; 121 122 ret = clk_set_rate(is->clocks[ISS_CLK_MCUISP_DIV0], 123 ATCLK_MCUISP_FREQUENCY); 124 if (ret < 0) 125 return ret; 126 127 return clk_set_rate(is->clocks[ISS_CLK_MCUISP_DIV1], 128 ATCLK_MCUISP_FREQUENCY); 129 } 130 131 static int fimc_is_enable_clocks(struct fimc_is *is) 132 { 133 int i, ret; 134 135 for (i = 0; i < ISS_GATE_CLKS_MAX; i++) { 136 if (IS_ERR(is->clocks[i])) 137 continue; 138 ret = clk_prepare_enable(is->clocks[i]); 139 if (ret < 0) { 140 dev_err(&is->pdev->dev, "clock %s enable failed\n", 141 fimc_is_clocks[i]); 142 for (--i; i >= 0; i--) 143 clk_disable(is->clocks[i]); 144 return ret; 145 } 146 pr_debug("enabled clock: %s\n", fimc_is_clocks[i]); 147 } 148 return 0; 149 } 150 151 static void fimc_is_disable_clocks(struct fimc_is *is) 152 { 153 int i; 154 155 for (i = 0; i < ISS_GATE_CLKS_MAX; i++) { 156 if (!IS_ERR(is->clocks[i])) { 157 clk_disable_unprepare(is->clocks[i]); 158 pr_debug("disabled clock: %s\n", fimc_is_clocks[i]); 159 } 160 } 161 } 162 163 static int fimc_is_parse_sensor_config(struct fimc_is *is, unsigned int index, 164 struct device_node *node) 165 { 166 struct fimc_is_sensor *sensor = &is->sensor[index]; 167 struct device_node *ep, *port; 168 u32 tmp = 0; 169 int ret; 170 171 sensor->drvdata = fimc_is_sensor_get_drvdata(node); 172 if (!sensor->drvdata) { 173 dev_err(&is->pdev->dev, "no driver data found for: %pOF\n", 174 node); 175 return -EINVAL; 176 } 177 178 ep = of_graph_get_next_endpoint(node, NULL); 179 if (!ep) 180 return -ENXIO; 181 182 port = of_graph_get_remote_port(ep); 183 of_node_put(ep); 184 if (!port) 185 return -ENXIO; 186 187 /* Use MIPI-CSIS channel id to determine the ISP I2C bus index. */ 188 ret = of_property_read_u32(port, "reg", &tmp); 189 if (ret < 0) { 190 dev_err(&is->pdev->dev, "reg property not found at: %pOF\n", 191 port); 192 of_node_put(port); 193 return ret; 194 } 195 196 of_node_put(port); 197 sensor->i2c_bus = tmp - FIMC_INPUT_MIPI_CSI2_0; 198 return 0; 199 } 200 201 static int fimc_is_register_subdevs(struct fimc_is *is) 202 { 203 struct device_node *i2c_bus, *child; 204 int ret, index = 0; 205 206 ret = fimc_isp_subdev_create(&is->isp); 207 if (ret < 0) 208 return ret; 209 210 for_each_compatible_node(i2c_bus, NULL, FIMC_IS_I2C_COMPATIBLE) { 211 for_each_available_child_of_node(i2c_bus, child) { 212 ret = fimc_is_parse_sensor_config(is, index, child); 213 214 if (ret < 0 || index >= FIMC_IS_SENSORS_NUM) { 215 of_node_put(child); 216 return ret; 217 } 218 index++; 219 } 220 } 221 return 0; 222 } 223 224 static int fimc_is_unregister_subdevs(struct fimc_is *is) 225 { 226 fimc_isp_subdev_destroy(&is->isp); 227 return 0; 228 } 229 230 static int fimc_is_load_setfile(struct fimc_is *is, char *file_name) 231 { 232 const struct firmware *fw; 233 void *buf; 234 int ret; 235 236 ret = request_firmware(&fw, file_name, &is->pdev->dev); 237 if (ret < 0) { 238 dev_err(&is->pdev->dev, "firmware request failed (%d)\n", ret); 239 return ret; 240 } 241 buf = is->memory.vaddr + is->setfile.base; 242 memcpy(buf, fw->data, fw->size); 243 fimc_is_mem_barrier(); 244 is->setfile.size = fw->size; 245 246 pr_debug("mem vaddr: %p, setfile buf: %p\n", is->memory.vaddr, buf); 247 248 memcpy(is->fw.setfile_info, 249 fw->data + fw->size - FIMC_IS_SETFILE_INFO_LEN, 250 FIMC_IS_SETFILE_INFO_LEN - 1); 251 252 is->fw.setfile_info[FIMC_IS_SETFILE_INFO_LEN - 1] = '\0'; 253 is->setfile.state = 1; 254 255 pr_debug("FIMC-IS setfile loaded: base: %#x, size: %zu B\n", 256 is->setfile.base, fw->size); 257 258 release_firmware(fw); 259 return ret; 260 } 261 262 int fimc_is_cpu_set_power(struct fimc_is *is, int on) 263 { 264 unsigned int timeout = FIMC_IS_POWER_ON_TIMEOUT; 265 266 if (on) { 267 /* Disable watchdog */ 268 mcuctl_write(0, is, REG_WDT_ISP); 269 270 /* Cortex-A5 start address setting */ 271 mcuctl_write(is->memory.addr, is, MCUCTL_REG_BBOAR); 272 273 /* Enable and start Cortex-A5 */ 274 pmuisp_write(0x18000, is, REG_PMU_ISP_ARM_OPTION); 275 pmuisp_write(0x1, is, REG_PMU_ISP_ARM_CONFIGURATION); 276 } else { 277 /* A5 power off */ 278 pmuisp_write(0x10000, is, REG_PMU_ISP_ARM_OPTION); 279 pmuisp_write(0x0, is, REG_PMU_ISP_ARM_CONFIGURATION); 280 281 while (pmuisp_read(is, REG_PMU_ISP_ARM_STATUS) & 1) { 282 if (timeout == 0) 283 return -ETIME; 284 timeout--; 285 udelay(1); 286 } 287 } 288 289 return 0; 290 } 291 292 /* Wait until @bit of @is->state is set to @state in the interrupt handler. */ 293 int fimc_is_wait_event(struct fimc_is *is, unsigned long bit, 294 unsigned int state, unsigned int timeout) 295 { 296 297 int ret = wait_event_timeout(is->irq_queue, 298 !state ^ test_bit(bit, &is->state), 299 timeout); 300 if (ret == 0) { 301 dev_WARN(&is->pdev->dev, "%s() timed out\n", __func__); 302 return -ETIME; 303 } 304 return 0; 305 } 306 307 int fimc_is_start_firmware(struct fimc_is *is) 308 { 309 struct device *dev = &is->pdev->dev; 310 int ret; 311 312 if (is->fw.f_w == NULL) { 313 dev_err(dev, "firmware is not loaded\n"); 314 return -EINVAL; 315 } 316 317 memcpy(is->memory.vaddr, is->fw.f_w->data, is->fw.f_w->size); 318 wmb(); 319 320 ret = fimc_is_cpu_set_power(is, 1); 321 if (ret < 0) 322 return ret; 323 324 ret = fimc_is_wait_event(is, IS_ST_A5_PWR_ON, 1, 325 msecs_to_jiffies(FIMC_IS_FW_LOAD_TIMEOUT)); 326 if (ret < 0) 327 dev_err(dev, "FIMC-IS CPU power on failed\n"); 328 329 return ret; 330 } 331 332 /* Allocate working memory for the FIMC-IS CPU. */ 333 static int fimc_is_alloc_cpu_memory(struct fimc_is *is) 334 { 335 struct device *dev = &is->pdev->dev; 336 337 is->memory.vaddr = dma_alloc_coherent(dev, FIMC_IS_CPU_MEM_SIZE, 338 &is->memory.addr, GFP_KERNEL); 339 if (is->memory.vaddr == NULL) 340 return -ENOMEM; 341 342 is->memory.size = FIMC_IS_CPU_MEM_SIZE; 343 344 dev_info(dev, "FIMC-IS CPU memory base: %pad\n", &is->memory.addr); 345 346 if (((u32)is->memory.addr) & FIMC_IS_FW_ADDR_MASK) { 347 dev_err(dev, "invalid firmware memory alignment: %#x\n", 348 (u32)is->memory.addr); 349 dma_free_coherent(dev, is->memory.size, is->memory.vaddr, 350 is->memory.addr); 351 return -EIO; 352 } 353 354 is->is_p_region = (struct is_region *)(is->memory.vaddr + 355 FIMC_IS_CPU_MEM_SIZE - FIMC_IS_REGION_SIZE); 356 357 is->is_dma_p_region = is->memory.addr + 358 FIMC_IS_CPU_MEM_SIZE - FIMC_IS_REGION_SIZE; 359 360 is->is_shared_region = (struct is_share_region *)(is->memory.vaddr + 361 FIMC_IS_SHARED_REGION_OFFSET); 362 return 0; 363 } 364 365 static void fimc_is_free_cpu_memory(struct fimc_is *is) 366 { 367 struct device *dev = &is->pdev->dev; 368 369 if (is->memory.vaddr == NULL) 370 return; 371 372 dma_free_coherent(dev, is->memory.size, is->memory.vaddr, 373 is->memory.addr); 374 } 375 376 static void fimc_is_load_firmware(const struct firmware *fw, void *context) 377 { 378 struct fimc_is *is = context; 379 struct device *dev = &is->pdev->dev; 380 void *buf; 381 int ret; 382 383 if (fw == NULL) { 384 dev_err(dev, "firmware request failed\n"); 385 return; 386 } 387 mutex_lock(&is->lock); 388 389 if (fw->size < FIMC_IS_FW_SIZE_MIN || fw->size > FIMC_IS_FW_SIZE_MAX) { 390 dev_err(dev, "wrong firmware size: %zu\n", fw->size); 391 goto done; 392 } 393 394 is->fw.size = fw->size; 395 396 ret = fimc_is_alloc_cpu_memory(is); 397 if (ret < 0) { 398 dev_err(dev, "failed to allocate FIMC-IS CPU memory\n"); 399 goto done; 400 } 401 402 memcpy(is->memory.vaddr, fw->data, fw->size); 403 wmb(); 404 405 /* Read firmware description. */ 406 buf = (void *)(is->memory.vaddr + fw->size - FIMC_IS_FW_DESC_LEN); 407 memcpy(&is->fw.info, buf, FIMC_IS_FW_INFO_LEN); 408 is->fw.info[FIMC_IS_FW_INFO_LEN] = 0; 409 410 buf = (void *)(is->memory.vaddr + fw->size - FIMC_IS_FW_VER_LEN); 411 memcpy(&is->fw.version, buf, FIMC_IS_FW_VER_LEN); 412 is->fw.version[FIMC_IS_FW_VER_LEN - 1] = 0; 413 414 is->fw.state = 1; 415 416 dev_info(dev, "loaded firmware: %s, rev. %s\n", 417 is->fw.info, is->fw.version); 418 dev_dbg(dev, "FW size: %zu, DMA addr: %pad\n", fw->size, &is->memory.addr); 419 420 is->is_shared_region->chip_id = 0xe4412; 421 is->is_shared_region->chip_rev_no = 1; 422 423 fimc_is_mem_barrier(); 424 425 /* 426 * FIXME: The firmware is not being released for now, as it is 427 * needed around for copying to the IS working memory every 428 * time before the Cortex-A5 is restarted. 429 */ 430 release_firmware(is->fw.f_w); 431 is->fw.f_w = fw; 432 done: 433 mutex_unlock(&is->lock); 434 } 435 436 static int fimc_is_request_firmware(struct fimc_is *is, const char *fw_name) 437 { 438 return request_firmware_nowait(THIS_MODULE, 439 FW_ACTION_UEVENT, fw_name, &is->pdev->dev, 440 GFP_KERNEL, is, fimc_is_load_firmware); 441 } 442 443 /* General IS interrupt handler */ 444 static void fimc_is_general_irq_handler(struct fimc_is *is) 445 { 446 is->i2h_cmd.cmd = mcuctl_read(is, MCUCTL_REG_ISSR(10)); 447 448 switch (is->i2h_cmd.cmd) { 449 case IHC_GET_SENSOR_NUM: 450 fimc_is_hw_get_params(is, 1); 451 fimc_is_hw_wait_intmsr0_intmsd0(is); 452 fimc_is_hw_set_sensor_num(is); 453 pr_debug("ISP FW version: %#x\n", is->i2h_cmd.args[0]); 454 break; 455 case IHC_SET_FACE_MARK: 456 case IHC_FRAME_DONE: 457 fimc_is_hw_get_params(is, 2); 458 break; 459 case IHC_SET_SHOT_MARK: 460 case IHC_AA_DONE: 461 case IH_REPLY_DONE: 462 fimc_is_hw_get_params(is, 3); 463 break; 464 case IH_REPLY_NOT_DONE: 465 fimc_is_hw_get_params(is, 4); 466 break; 467 case IHC_NOT_READY: 468 break; 469 default: 470 pr_info("unknown command: %#x\n", is->i2h_cmd.cmd); 471 } 472 473 fimc_is_fw_clear_irq1(is, FIMC_IS_INT_GENERAL); 474 475 switch (is->i2h_cmd.cmd) { 476 case IHC_GET_SENSOR_NUM: 477 fimc_is_hw_set_intgr0_gd0(is); 478 set_bit(IS_ST_A5_PWR_ON, &is->state); 479 break; 480 481 case IHC_SET_SHOT_MARK: 482 break; 483 484 case IHC_SET_FACE_MARK: 485 is->fd_header.count = is->i2h_cmd.args[0]; 486 is->fd_header.index = is->i2h_cmd.args[1]; 487 is->fd_header.offset = 0; 488 break; 489 490 case IHC_FRAME_DONE: 491 break; 492 493 case IHC_AA_DONE: 494 pr_debug("AA_DONE - %d, %d, %d\n", is->i2h_cmd.args[0], 495 is->i2h_cmd.args[1], is->i2h_cmd.args[2]); 496 break; 497 498 case IH_REPLY_DONE: 499 pr_debug("ISR_DONE: args[0]: %#x\n", is->i2h_cmd.args[0]); 500 501 switch (is->i2h_cmd.args[0]) { 502 case HIC_PREVIEW_STILL...HIC_CAPTURE_VIDEO: 503 /* Get CAC margin */ 504 set_bit(IS_ST_CHANGE_MODE, &is->state); 505 is->isp.cac_margin_x = is->i2h_cmd.args[1]; 506 is->isp.cac_margin_y = is->i2h_cmd.args[2]; 507 pr_debug("CAC margin (x,y): (%d,%d)\n", 508 is->isp.cac_margin_x, is->isp.cac_margin_y); 509 break; 510 511 case HIC_STREAM_ON: 512 clear_bit(IS_ST_STREAM_OFF, &is->state); 513 set_bit(IS_ST_STREAM_ON, &is->state); 514 break; 515 516 case HIC_STREAM_OFF: 517 clear_bit(IS_ST_STREAM_ON, &is->state); 518 set_bit(IS_ST_STREAM_OFF, &is->state); 519 break; 520 521 case HIC_SET_PARAMETER: 522 is->config[is->config_index].p_region_index[0] = 0; 523 is->config[is->config_index].p_region_index[1] = 0; 524 set_bit(IS_ST_BLOCK_CMD_CLEARED, &is->state); 525 pr_debug("HIC_SET_PARAMETER\n"); 526 break; 527 528 case HIC_GET_PARAMETER: 529 break; 530 531 case HIC_SET_TUNE: 532 break; 533 534 case HIC_GET_STATUS: 535 break; 536 537 case HIC_OPEN_SENSOR: 538 set_bit(IS_ST_OPEN_SENSOR, &is->state); 539 pr_debug("data lanes: %d, settle line: %d\n", 540 is->i2h_cmd.args[2], is->i2h_cmd.args[1]); 541 break; 542 543 case HIC_CLOSE_SENSOR: 544 clear_bit(IS_ST_OPEN_SENSOR, &is->state); 545 is->sensor_index = 0; 546 break; 547 548 case HIC_MSG_TEST: 549 pr_debug("config MSG level completed\n"); 550 break; 551 552 case HIC_POWER_DOWN: 553 clear_bit(IS_ST_PWR_SUBIP_ON, &is->state); 554 break; 555 556 case HIC_GET_SET_FILE_ADDR: 557 is->setfile.base = is->i2h_cmd.args[1]; 558 set_bit(IS_ST_SETFILE_LOADED, &is->state); 559 break; 560 561 case HIC_LOAD_SET_FILE: 562 set_bit(IS_ST_SETFILE_LOADED, &is->state); 563 break; 564 } 565 break; 566 567 case IH_REPLY_NOT_DONE: 568 pr_err("ISR_NDONE: %d: %#x, %s\n", is->i2h_cmd.args[0], 569 is->i2h_cmd.args[1], 570 fimc_is_strerr(is->i2h_cmd.args[1])); 571 572 if (is->i2h_cmd.args[1] & IS_ERROR_TIME_OUT_FLAG) 573 pr_err("IS_ERROR_TIME_OUT\n"); 574 575 switch (is->i2h_cmd.args[1]) { 576 case IS_ERROR_SET_PARAMETER: 577 fimc_is_mem_barrier(); 578 } 579 580 switch (is->i2h_cmd.args[0]) { 581 case HIC_SET_PARAMETER: 582 is->config[is->config_index].p_region_index[0] = 0; 583 is->config[is->config_index].p_region_index[1] = 0; 584 set_bit(IS_ST_BLOCK_CMD_CLEARED, &is->state); 585 break; 586 } 587 break; 588 589 case IHC_NOT_READY: 590 pr_err("IS control sequence error: Not Ready\n"); 591 break; 592 } 593 594 wake_up(&is->irq_queue); 595 } 596 597 static irqreturn_t fimc_is_irq_handler(int irq, void *priv) 598 { 599 struct fimc_is *is = priv; 600 unsigned long flags; 601 u32 status; 602 603 spin_lock_irqsave(&is->slock, flags); 604 status = mcuctl_read(is, MCUCTL_REG_INTSR1); 605 606 if (status & (1UL << FIMC_IS_INT_GENERAL)) 607 fimc_is_general_irq_handler(is); 608 609 if (status & (1UL << FIMC_IS_INT_FRAME_DONE_ISP)) 610 fimc_isp_irq_handler(is); 611 612 spin_unlock_irqrestore(&is->slock, flags); 613 return IRQ_HANDLED; 614 } 615 616 static int fimc_is_hw_open_sensor(struct fimc_is *is, 617 struct fimc_is_sensor *sensor) 618 { 619 struct sensor_open_extended *soe = (void *)&is->is_p_region->shared; 620 621 fimc_is_hw_wait_intmsr0_intmsd0(is); 622 623 soe->self_calibration_mode = 1; 624 soe->actuator_type = 0; 625 soe->mipi_lane_num = 0; 626 soe->mclk = 0; 627 soe->mipi_speed = 0; 628 soe->fast_open_sensor = 0; 629 soe->i2c_sclk = 88000000; 630 631 fimc_is_mem_barrier(); 632 633 /* 634 * Some user space use cases hang up here without this 635 * empirically chosen delay. 636 */ 637 udelay(100); 638 639 mcuctl_write(HIC_OPEN_SENSOR, is, MCUCTL_REG_ISSR(0)); 640 mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1)); 641 mcuctl_write(sensor->drvdata->id, is, MCUCTL_REG_ISSR(2)); 642 mcuctl_write(sensor->i2c_bus, is, MCUCTL_REG_ISSR(3)); 643 mcuctl_write(is->is_dma_p_region, is, MCUCTL_REG_ISSR(4)); 644 645 fimc_is_hw_set_intgr0_gd0(is); 646 647 return fimc_is_wait_event(is, IS_ST_OPEN_SENSOR, 1, 648 sensor->drvdata->open_timeout); 649 } 650 651 652 int fimc_is_hw_initialize(struct fimc_is *is) 653 { 654 static const int config_ids[] = { 655 IS_SC_PREVIEW_STILL, IS_SC_PREVIEW_VIDEO, 656 IS_SC_CAPTURE_STILL, IS_SC_CAPTURE_VIDEO 657 }; 658 struct device *dev = &is->pdev->dev; 659 u32 prev_id; 660 int i, ret; 661 662 /* Sensor initialization. Only one sensor is currently supported. */ 663 ret = fimc_is_hw_open_sensor(is, &is->sensor[0]); 664 if (ret < 0) 665 return ret; 666 667 /* Get the setfile address. */ 668 fimc_is_hw_get_setfile_addr(is); 669 670 ret = fimc_is_wait_event(is, IS_ST_SETFILE_LOADED, 1, 671 FIMC_IS_CONFIG_TIMEOUT); 672 if (ret < 0) { 673 dev_err(dev, "get setfile address timed out\n"); 674 return ret; 675 } 676 pr_debug("setfile.base: %#x\n", is->setfile.base); 677 678 /* Load the setfile. */ 679 fimc_is_load_setfile(is, FIMC_IS_SETFILE_6A3); 680 clear_bit(IS_ST_SETFILE_LOADED, &is->state); 681 fimc_is_hw_load_setfile(is); 682 ret = fimc_is_wait_event(is, IS_ST_SETFILE_LOADED, 1, 683 FIMC_IS_CONFIG_TIMEOUT); 684 if (ret < 0) { 685 dev_err(dev, "loading setfile timed out\n"); 686 return ret; 687 } 688 689 pr_debug("setfile: base: %#x, size: %d\n", 690 is->setfile.base, is->setfile.size); 691 pr_info("FIMC-IS Setfile info: %s\n", is->fw.setfile_info); 692 693 /* Check magic number. */ 694 if (is->is_p_region->shared[MAX_SHARED_COUNT - 1] != 695 FIMC_IS_MAGIC_NUMBER) { 696 dev_err(dev, "magic number error!\n"); 697 return -EIO; 698 } 699 700 pr_debug("shared region: %pad, parameter region: %pad\n", 701 &is->memory.addr + FIMC_IS_SHARED_REGION_OFFSET, 702 &is->is_dma_p_region); 703 704 is->setfile.sub_index = 0; 705 706 /* Stream off. */ 707 fimc_is_hw_stream_off(is); 708 ret = fimc_is_wait_event(is, IS_ST_STREAM_OFF, 1, 709 FIMC_IS_CONFIG_TIMEOUT); 710 if (ret < 0) { 711 dev_err(dev, "stream off timeout\n"); 712 return ret; 713 } 714 715 /* Preserve previous mode. */ 716 prev_id = is->config_index; 717 718 /* Set initial parameter values. */ 719 for (i = 0; i < ARRAY_SIZE(config_ids); i++) { 720 is->config_index = config_ids[i]; 721 fimc_is_set_initial_params(is); 722 ret = fimc_is_itf_s_param(is, true); 723 if (ret < 0) { 724 is->config_index = prev_id; 725 return ret; 726 } 727 } 728 is->config_index = prev_id; 729 730 set_bit(IS_ST_INIT_DONE, &is->state); 731 dev_info(dev, "initialization sequence completed (%d)\n", 732 is->config_index); 733 return 0; 734 } 735 736 static int fimc_is_show(struct seq_file *s, void *data) 737 { 738 struct fimc_is *is = s->private; 739 const u8 *buf = is->memory.vaddr + FIMC_IS_DEBUG_REGION_OFFSET; 740 741 if (is->memory.vaddr == NULL) { 742 dev_err(&is->pdev->dev, "firmware memory is not initialized\n"); 743 return -EIO; 744 } 745 746 seq_printf(s, "%s\n", buf); 747 return 0; 748 } 749 750 DEFINE_SHOW_ATTRIBUTE(fimc_is); 751 752 static void fimc_is_debugfs_remove(struct fimc_is *is) 753 { 754 debugfs_remove_recursive(is->debugfs_entry); 755 is->debugfs_entry = NULL; 756 } 757 758 static void fimc_is_debugfs_create(struct fimc_is *is) 759 { 760 is->debugfs_entry = debugfs_create_dir("fimc_is", NULL); 761 762 debugfs_create_file("fw_log", S_IRUGO, is->debugfs_entry, is, 763 &fimc_is_fops); 764 } 765 766 static int fimc_is_runtime_resume(struct device *dev); 767 static int fimc_is_runtime_suspend(struct device *dev); 768 769 static int fimc_is_probe(struct platform_device *pdev) 770 { 771 struct device *dev = &pdev->dev; 772 struct fimc_is *is; 773 struct resource res; 774 struct device_node *node; 775 int ret; 776 777 is = devm_kzalloc(&pdev->dev, sizeof(*is), GFP_KERNEL); 778 if (!is) 779 return -ENOMEM; 780 781 is->pdev = pdev; 782 is->isp.pdev = pdev; 783 784 init_waitqueue_head(&is->irq_queue); 785 spin_lock_init(&is->slock); 786 mutex_init(&is->lock); 787 788 ret = of_address_to_resource(dev->of_node, 0, &res); 789 if (ret < 0) 790 return ret; 791 792 is->regs = devm_ioremap_resource(dev, &res); 793 if (IS_ERR(is->regs)) 794 return PTR_ERR(is->regs); 795 796 node = of_get_child_by_name(dev->of_node, "pmu"); 797 if (!node) 798 return -ENODEV; 799 800 is->pmu_regs = of_iomap(node, 0); 801 of_node_put(node); 802 if (!is->pmu_regs) 803 return -ENOMEM; 804 805 is->irq = irq_of_parse_and_map(dev->of_node, 0); 806 if (!is->irq) { 807 dev_err(dev, "no irq found\n"); 808 ret = -EINVAL; 809 goto err_iounmap; 810 } 811 812 ret = fimc_is_get_clocks(is); 813 if (ret < 0) 814 goto err_iounmap; 815 816 platform_set_drvdata(pdev, is); 817 818 ret = request_irq(is->irq, fimc_is_irq_handler, 0, dev_name(dev), is); 819 if (ret < 0) { 820 dev_err(dev, "irq request failed\n"); 821 goto err_clk; 822 } 823 pm_runtime_enable(dev); 824 825 if (!pm_runtime_enabled(dev)) { 826 ret = fimc_is_runtime_resume(dev); 827 if (ret < 0) 828 goto err_irq; 829 } 830 831 ret = pm_runtime_resume_and_get(dev); 832 if (ret < 0) 833 goto err_irq; 834 835 vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32)); 836 837 ret = devm_of_platform_populate(dev); 838 if (ret < 0) 839 goto err_pm; 840 841 /* 842 * Register FIMC-IS V4L2 subdevs to this driver. The video nodes 843 * will be created within the subdev's registered() callback. 844 */ 845 ret = fimc_is_register_subdevs(is); 846 if (ret < 0) 847 goto err_pm; 848 849 fimc_is_debugfs_create(is); 850 851 ret = fimc_is_request_firmware(is, FIMC_IS_FW_FILENAME); 852 if (ret < 0) 853 goto err_dfs; 854 855 pm_runtime_put_sync(dev); 856 857 dev_dbg(dev, "FIMC-IS registered successfully\n"); 858 return 0; 859 860 err_dfs: 861 fimc_is_debugfs_remove(is); 862 fimc_is_unregister_subdevs(is); 863 err_pm: 864 pm_runtime_put_noidle(dev); 865 if (!pm_runtime_enabled(dev)) 866 fimc_is_runtime_suspend(dev); 867 err_irq: 868 free_irq(is->irq, is); 869 err_clk: 870 fimc_is_put_clocks(is); 871 err_iounmap: 872 iounmap(is->pmu_regs); 873 return ret; 874 } 875 876 static int fimc_is_runtime_resume(struct device *dev) 877 { 878 struct fimc_is *is = dev_get_drvdata(dev); 879 int ret; 880 881 ret = fimc_is_setup_clocks(is); 882 if (ret) 883 return ret; 884 885 return fimc_is_enable_clocks(is); 886 } 887 888 static int fimc_is_runtime_suspend(struct device *dev) 889 { 890 struct fimc_is *is = dev_get_drvdata(dev); 891 892 fimc_is_disable_clocks(is); 893 return 0; 894 } 895 896 #ifdef CONFIG_PM_SLEEP 897 static int fimc_is_resume(struct device *dev) 898 { 899 /* TODO: */ 900 return 0; 901 } 902 903 static int fimc_is_suspend(struct device *dev) 904 { 905 struct fimc_is *is = dev_get_drvdata(dev); 906 907 /* TODO: */ 908 if (test_bit(IS_ST_A5_PWR_ON, &is->state)) 909 return -EBUSY; 910 911 return 0; 912 } 913 #endif /* CONFIG_PM_SLEEP */ 914 915 static int fimc_is_remove(struct platform_device *pdev) 916 { 917 struct device *dev = &pdev->dev; 918 struct fimc_is *is = dev_get_drvdata(dev); 919 920 pm_runtime_disable(dev); 921 pm_runtime_set_suspended(dev); 922 if (!pm_runtime_status_suspended(dev)) 923 fimc_is_runtime_suspend(dev); 924 free_irq(is->irq, is); 925 fimc_is_unregister_subdevs(is); 926 vb2_dma_contig_clear_max_seg_size(dev); 927 fimc_is_put_clocks(is); 928 iounmap(is->pmu_regs); 929 fimc_is_debugfs_remove(is); 930 release_firmware(is->fw.f_w); 931 fimc_is_free_cpu_memory(is); 932 933 return 0; 934 } 935 936 static const struct of_device_id fimc_is_of_match[] = { 937 { .compatible = "samsung,exynos4212-fimc-is" }, 938 { /* sentinel */ }, 939 }; 940 MODULE_DEVICE_TABLE(of, fimc_is_of_match); 941 942 static const struct dev_pm_ops fimc_is_pm_ops = { 943 SET_SYSTEM_SLEEP_PM_OPS(fimc_is_suspend, fimc_is_resume) 944 SET_RUNTIME_PM_OPS(fimc_is_runtime_suspend, fimc_is_runtime_resume, 945 NULL) 946 }; 947 948 static struct platform_driver fimc_is_driver = { 949 .probe = fimc_is_probe, 950 .remove = fimc_is_remove, 951 .driver = { 952 .of_match_table = fimc_is_of_match, 953 .name = FIMC_IS_DRV_NAME, 954 .pm = &fimc_is_pm_ops, 955 } 956 }; 957 958 static int fimc_is_module_init(void) 959 { 960 int ret; 961 962 ret = fimc_is_register_i2c_driver(); 963 if (ret < 0) 964 return ret; 965 966 ret = platform_driver_register(&fimc_is_driver); 967 968 if (ret < 0) 969 fimc_is_unregister_i2c_driver(); 970 971 return ret; 972 } 973 974 static void fimc_is_module_exit(void) 975 { 976 fimc_is_unregister_i2c_driver(); 977 platform_driver_unregister(&fimc_is_driver); 978 } 979 980 module_init(fimc_is_module_init); 981 module_exit(fimc_is_module_exit); 982 983 MODULE_ALIAS("platform:" FIMC_IS_DRV_NAME); 984 MODULE_AUTHOR("Younghwan Joo <yhwan.joo@samsung.com>"); 985 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>"); 986 MODULE_LICENSE("GPL v2"); 987