1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de> 4 * Copyright (C) 2005-2009 Freescale Semiconductor, Inc. 5 */ 6 #include <linux/module.h> 7 #include <linux/export.h> 8 #include <linux/types.h> 9 #include <linux/reset.h> 10 #include <linux/platform_device.h> 11 #include <linux/err.h> 12 #include <linux/spinlock.h> 13 #include <linux/delay.h> 14 #include <linux/interrupt.h> 15 #include <linux/io.h> 16 #include <linux/clk.h> 17 #include <linux/list.h> 18 #include <linux/irq.h> 19 #include <linux/irqchip/chained_irq.h> 20 #include <linux/irqdomain.h> 21 #include <linux/of.h> 22 #include <linux/of_graph.h> 23 24 #include <drm/drm_fourcc.h> 25 26 #include <video/imx-ipu-v3.h> 27 #include "ipu-prv.h" 28 29 static inline u32 ipu_cm_read(struct ipu_soc *ipu, unsigned offset) 30 { 31 return readl(ipu->cm_reg + offset); 32 } 33 34 static inline void ipu_cm_write(struct ipu_soc *ipu, u32 value, unsigned offset) 35 { 36 writel(value, ipu->cm_reg + offset); 37 } 38 39 int ipu_get_num(struct ipu_soc *ipu) 40 { 41 return ipu->id; 42 } 43 EXPORT_SYMBOL_GPL(ipu_get_num); 44 45 void ipu_srm_dp_update(struct ipu_soc *ipu, bool sync) 46 { 47 u32 val; 48 49 val = ipu_cm_read(ipu, IPU_SRM_PRI2); 50 val &= ~DP_S_SRM_MODE_MASK; 51 val |= sync ? DP_S_SRM_MODE_NEXT_FRAME : 52 DP_S_SRM_MODE_NOW; 53 ipu_cm_write(ipu, val, IPU_SRM_PRI2); 54 } 55 EXPORT_SYMBOL_GPL(ipu_srm_dp_update); 56 57 enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc) 58 { 59 switch (drm_fourcc) { 60 case DRM_FORMAT_ARGB1555: 61 case DRM_FORMAT_ABGR1555: 62 case DRM_FORMAT_RGBA5551: 63 case DRM_FORMAT_BGRA5551: 64 case DRM_FORMAT_RGB565: 65 case DRM_FORMAT_BGR565: 66 case DRM_FORMAT_RGB888: 67 case DRM_FORMAT_BGR888: 68 case DRM_FORMAT_ARGB4444: 69 case DRM_FORMAT_XRGB8888: 70 case DRM_FORMAT_XBGR8888: 71 case DRM_FORMAT_RGBX8888: 72 case DRM_FORMAT_BGRX8888: 73 case DRM_FORMAT_ARGB8888: 74 case DRM_FORMAT_ABGR8888: 75 case DRM_FORMAT_RGBA8888: 76 case DRM_FORMAT_BGRA8888: 77 case DRM_FORMAT_RGB565_A8: 78 case DRM_FORMAT_BGR565_A8: 79 case DRM_FORMAT_RGB888_A8: 80 case DRM_FORMAT_BGR888_A8: 81 case DRM_FORMAT_RGBX8888_A8: 82 case DRM_FORMAT_BGRX8888_A8: 83 return IPUV3_COLORSPACE_RGB; 84 case DRM_FORMAT_YUYV: 85 case DRM_FORMAT_UYVY: 86 case DRM_FORMAT_YUV420: 87 case DRM_FORMAT_YVU420: 88 case DRM_FORMAT_YUV422: 89 case DRM_FORMAT_YVU422: 90 case DRM_FORMAT_YUV444: 91 case DRM_FORMAT_YVU444: 92 case DRM_FORMAT_NV12: 93 case DRM_FORMAT_NV21: 94 case DRM_FORMAT_NV16: 95 case DRM_FORMAT_NV61: 96 return IPUV3_COLORSPACE_YUV; 97 default: 98 return IPUV3_COLORSPACE_UNKNOWN; 99 } 100 } 101 EXPORT_SYMBOL_GPL(ipu_drm_fourcc_to_colorspace); 102 103 enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat) 104 { 105 switch (pixelformat) { 106 case V4L2_PIX_FMT_YUV420: 107 case V4L2_PIX_FMT_YVU420: 108 case V4L2_PIX_FMT_YUV422P: 109 case V4L2_PIX_FMT_UYVY: 110 case V4L2_PIX_FMT_YUYV: 111 case V4L2_PIX_FMT_NV12: 112 case V4L2_PIX_FMT_NV21: 113 case V4L2_PIX_FMT_NV16: 114 case V4L2_PIX_FMT_NV61: 115 return IPUV3_COLORSPACE_YUV; 116 case V4L2_PIX_FMT_RGB565: 117 case V4L2_PIX_FMT_BGR24: 118 case V4L2_PIX_FMT_RGB24: 119 case V4L2_PIX_FMT_ABGR32: 120 case V4L2_PIX_FMT_XBGR32: 121 case V4L2_PIX_FMT_BGRA32: 122 case V4L2_PIX_FMT_BGRX32: 123 case V4L2_PIX_FMT_RGBA32: 124 case V4L2_PIX_FMT_RGBX32: 125 case V4L2_PIX_FMT_ARGB32: 126 case V4L2_PIX_FMT_XRGB32: 127 case V4L2_PIX_FMT_RGB32: 128 case V4L2_PIX_FMT_BGR32: 129 return IPUV3_COLORSPACE_RGB; 130 default: 131 return IPUV3_COLORSPACE_UNKNOWN; 132 } 133 } 134 EXPORT_SYMBOL_GPL(ipu_pixelformat_to_colorspace); 135 136 int ipu_degrees_to_rot_mode(enum ipu_rotate_mode *mode, int degrees, 137 bool hflip, bool vflip) 138 { 139 u32 r90, vf, hf; 140 141 switch (degrees) { 142 case 0: 143 vf = hf = r90 = 0; 144 break; 145 case 90: 146 vf = hf = 0; 147 r90 = 1; 148 break; 149 case 180: 150 vf = hf = 1; 151 r90 = 0; 152 break; 153 case 270: 154 vf = hf = r90 = 1; 155 break; 156 default: 157 return -EINVAL; 158 } 159 160 hf ^= (u32)hflip; 161 vf ^= (u32)vflip; 162 163 *mode = (enum ipu_rotate_mode)((r90 << 2) | (hf << 1) | vf); 164 return 0; 165 } 166 EXPORT_SYMBOL_GPL(ipu_degrees_to_rot_mode); 167 168 int ipu_rot_mode_to_degrees(int *degrees, enum ipu_rotate_mode mode, 169 bool hflip, bool vflip) 170 { 171 u32 r90, vf, hf; 172 173 r90 = ((u32)mode >> 2) & 0x1; 174 hf = ((u32)mode >> 1) & 0x1; 175 vf = ((u32)mode >> 0) & 0x1; 176 hf ^= (u32)hflip; 177 vf ^= (u32)vflip; 178 179 switch ((enum ipu_rotate_mode)((r90 << 2) | (hf << 1) | vf)) { 180 case IPU_ROTATE_NONE: 181 *degrees = 0; 182 break; 183 case IPU_ROTATE_90_RIGHT: 184 *degrees = 90; 185 break; 186 case IPU_ROTATE_180: 187 *degrees = 180; 188 break; 189 case IPU_ROTATE_90_LEFT: 190 *degrees = 270; 191 break; 192 default: 193 return -EINVAL; 194 } 195 196 return 0; 197 } 198 EXPORT_SYMBOL_GPL(ipu_rot_mode_to_degrees); 199 200 struct ipuv3_channel *ipu_idmac_get(struct ipu_soc *ipu, unsigned num) 201 { 202 struct ipuv3_channel *channel; 203 204 dev_dbg(ipu->dev, "%s %d\n", __func__, num); 205 206 if (num > 63) 207 return ERR_PTR(-ENODEV); 208 209 mutex_lock(&ipu->channel_lock); 210 211 list_for_each_entry(channel, &ipu->channels, list) { 212 if (channel->num == num) { 213 channel = ERR_PTR(-EBUSY); 214 goto out; 215 } 216 } 217 218 channel = kzalloc(sizeof(*channel), GFP_KERNEL); 219 if (!channel) { 220 channel = ERR_PTR(-ENOMEM); 221 goto out; 222 } 223 224 channel->num = num; 225 channel->ipu = ipu; 226 list_add(&channel->list, &ipu->channels); 227 228 out: 229 mutex_unlock(&ipu->channel_lock); 230 231 return channel; 232 } 233 EXPORT_SYMBOL_GPL(ipu_idmac_get); 234 235 void ipu_idmac_put(struct ipuv3_channel *channel) 236 { 237 struct ipu_soc *ipu = channel->ipu; 238 239 dev_dbg(ipu->dev, "%s %d\n", __func__, channel->num); 240 241 mutex_lock(&ipu->channel_lock); 242 243 list_del(&channel->list); 244 kfree(channel); 245 246 mutex_unlock(&ipu->channel_lock); 247 } 248 EXPORT_SYMBOL_GPL(ipu_idmac_put); 249 250 #define idma_mask(ch) (1 << ((ch) & 0x1f)) 251 252 /* 253 * This is an undocumented feature, a write one to a channel bit in 254 * IPU_CHA_CUR_BUF and IPU_CHA_TRIPLE_CUR_BUF will reset the channel's 255 * internal current buffer pointer so that transfers start from buffer 256 * 0 on the next channel enable (that's the theory anyway, the imx6 TRM 257 * only says these are read-only registers). This operation is required 258 * for channel linking to work correctly, for instance video capture 259 * pipelines that carry out image rotations will fail after the first 260 * streaming unless this function is called for each channel before 261 * re-enabling the channels. 262 */ 263 static void __ipu_idmac_reset_current_buffer(struct ipuv3_channel *channel) 264 { 265 struct ipu_soc *ipu = channel->ipu; 266 unsigned int chno = channel->num; 267 268 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_CUR_BUF(chno)); 269 } 270 271 void ipu_idmac_set_double_buffer(struct ipuv3_channel *channel, 272 bool doublebuffer) 273 { 274 struct ipu_soc *ipu = channel->ipu; 275 unsigned long flags; 276 u32 reg; 277 278 spin_lock_irqsave(&ipu->lock, flags); 279 280 reg = ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(channel->num)); 281 if (doublebuffer) 282 reg |= idma_mask(channel->num); 283 else 284 reg &= ~idma_mask(channel->num); 285 ipu_cm_write(ipu, reg, IPU_CHA_DB_MODE_SEL(channel->num)); 286 287 __ipu_idmac_reset_current_buffer(channel); 288 289 spin_unlock_irqrestore(&ipu->lock, flags); 290 } 291 EXPORT_SYMBOL_GPL(ipu_idmac_set_double_buffer); 292 293 static const struct { 294 int chnum; 295 u32 reg; 296 int shift; 297 } idmac_lock_en_info[] = { 298 { .chnum = 5, .reg = IDMAC_CH_LOCK_EN_1, .shift = 0, }, 299 { .chnum = 11, .reg = IDMAC_CH_LOCK_EN_1, .shift = 2, }, 300 { .chnum = 12, .reg = IDMAC_CH_LOCK_EN_1, .shift = 4, }, 301 { .chnum = 14, .reg = IDMAC_CH_LOCK_EN_1, .shift = 6, }, 302 { .chnum = 15, .reg = IDMAC_CH_LOCK_EN_1, .shift = 8, }, 303 { .chnum = 20, .reg = IDMAC_CH_LOCK_EN_1, .shift = 10, }, 304 { .chnum = 21, .reg = IDMAC_CH_LOCK_EN_1, .shift = 12, }, 305 { .chnum = 22, .reg = IDMAC_CH_LOCK_EN_1, .shift = 14, }, 306 { .chnum = 23, .reg = IDMAC_CH_LOCK_EN_1, .shift = 16, }, 307 { .chnum = 27, .reg = IDMAC_CH_LOCK_EN_1, .shift = 18, }, 308 { .chnum = 28, .reg = IDMAC_CH_LOCK_EN_1, .shift = 20, }, 309 { .chnum = 45, .reg = IDMAC_CH_LOCK_EN_2, .shift = 0, }, 310 { .chnum = 46, .reg = IDMAC_CH_LOCK_EN_2, .shift = 2, }, 311 { .chnum = 47, .reg = IDMAC_CH_LOCK_EN_2, .shift = 4, }, 312 { .chnum = 48, .reg = IDMAC_CH_LOCK_EN_2, .shift = 6, }, 313 { .chnum = 49, .reg = IDMAC_CH_LOCK_EN_2, .shift = 8, }, 314 { .chnum = 50, .reg = IDMAC_CH_LOCK_EN_2, .shift = 10, }, 315 }; 316 317 int ipu_idmac_lock_enable(struct ipuv3_channel *channel, int num_bursts) 318 { 319 struct ipu_soc *ipu = channel->ipu; 320 unsigned long flags; 321 u32 bursts, regval; 322 int i; 323 324 switch (num_bursts) { 325 case 0: 326 case 1: 327 bursts = 0x00; /* locking disabled */ 328 break; 329 case 2: 330 bursts = 0x01; 331 break; 332 case 4: 333 bursts = 0x02; 334 break; 335 case 8: 336 bursts = 0x03; 337 break; 338 default: 339 return -EINVAL; 340 } 341 342 /* 343 * IPUv3EX / i.MX51 has a different register layout, and on IPUv3M / 344 * i.MX53 channel arbitration locking doesn't seem to work properly. 345 * Allow enabling the lock feature on IPUv3H / i.MX6 only. 346 */ 347 if (bursts && ipu->ipu_type != IPUV3H) 348 return -EINVAL; 349 350 for (i = 0; i < ARRAY_SIZE(idmac_lock_en_info); i++) { 351 if (channel->num == idmac_lock_en_info[i].chnum) 352 break; 353 } 354 if (i >= ARRAY_SIZE(idmac_lock_en_info)) 355 return -EINVAL; 356 357 spin_lock_irqsave(&ipu->lock, flags); 358 359 regval = ipu_idmac_read(ipu, idmac_lock_en_info[i].reg); 360 regval &= ~(0x03 << idmac_lock_en_info[i].shift); 361 regval |= (bursts << idmac_lock_en_info[i].shift); 362 ipu_idmac_write(ipu, regval, idmac_lock_en_info[i].reg); 363 364 spin_unlock_irqrestore(&ipu->lock, flags); 365 366 return 0; 367 } 368 EXPORT_SYMBOL_GPL(ipu_idmac_lock_enable); 369 370 int ipu_module_enable(struct ipu_soc *ipu, u32 mask) 371 { 372 unsigned long lock_flags; 373 u32 val; 374 375 spin_lock_irqsave(&ipu->lock, lock_flags); 376 377 val = ipu_cm_read(ipu, IPU_DISP_GEN); 378 379 if (mask & IPU_CONF_DI0_EN) 380 val |= IPU_DI0_COUNTER_RELEASE; 381 if (mask & IPU_CONF_DI1_EN) 382 val |= IPU_DI1_COUNTER_RELEASE; 383 384 ipu_cm_write(ipu, val, IPU_DISP_GEN); 385 386 val = ipu_cm_read(ipu, IPU_CONF); 387 val |= mask; 388 ipu_cm_write(ipu, val, IPU_CONF); 389 390 spin_unlock_irqrestore(&ipu->lock, lock_flags); 391 392 return 0; 393 } 394 EXPORT_SYMBOL_GPL(ipu_module_enable); 395 396 int ipu_module_disable(struct ipu_soc *ipu, u32 mask) 397 { 398 unsigned long lock_flags; 399 u32 val; 400 401 spin_lock_irqsave(&ipu->lock, lock_flags); 402 403 val = ipu_cm_read(ipu, IPU_CONF); 404 val &= ~mask; 405 ipu_cm_write(ipu, val, IPU_CONF); 406 407 val = ipu_cm_read(ipu, IPU_DISP_GEN); 408 409 if (mask & IPU_CONF_DI0_EN) 410 val &= ~IPU_DI0_COUNTER_RELEASE; 411 if (mask & IPU_CONF_DI1_EN) 412 val &= ~IPU_DI1_COUNTER_RELEASE; 413 414 ipu_cm_write(ipu, val, IPU_DISP_GEN); 415 416 spin_unlock_irqrestore(&ipu->lock, lock_flags); 417 418 return 0; 419 } 420 EXPORT_SYMBOL_GPL(ipu_module_disable); 421 422 int ipu_idmac_get_current_buffer(struct ipuv3_channel *channel) 423 { 424 struct ipu_soc *ipu = channel->ipu; 425 unsigned int chno = channel->num; 426 427 return (ipu_cm_read(ipu, IPU_CHA_CUR_BUF(chno)) & idma_mask(chno)) ? 1 : 0; 428 } 429 EXPORT_SYMBOL_GPL(ipu_idmac_get_current_buffer); 430 431 bool ipu_idmac_buffer_is_ready(struct ipuv3_channel *channel, u32 buf_num) 432 { 433 struct ipu_soc *ipu = channel->ipu; 434 unsigned long flags; 435 u32 reg = 0; 436 437 spin_lock_irqsave(&ipu->lock, flags); 438 switch (buf_num) { 439 case 0: 440 reg = ipu_cm_read(ipu, IPU_CHA_BUF0_RDY(channel->num)); 441 break; 442 case 1: 443 reg = ipu_cm_read(ipu, IPU_CHA_BUF1_RDY(channel->num)); 444 break; 445 case 2: 446 reg = ipu_cm_read(ipu, IPU_CHA_BUF2_RDY(channel->num)); 447 break; 448 } 449 spin_unlock_irqrestore(&ipu->lock, flags); 450 451 return ((reg & idma_mask(channel->num)) != 0); 452 } 453 EXPORT_SYMBOL_GPL(ipu_idmac_buffer_is_ready); 454 455 void ipu_idmac_select_buffer(struct ipuv3_channel *channel, u32 buf_num) 456 { 457 struct ipu_soc *ipu = channel->ipu; 458 unsigned int chno = channel->num; 459 unsigned long flags; 460 461 spin_lock_irqsave(&ipu->lock, flags); 462 463 /* Mark buffer as ready. */ 464 if (buf_num == 0) 465 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF0_RDY(chno)); 466 else 467 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF1_RDY(chno)); 468 469 spin_unlock_irqrestore(&ipu->lock, flags); 470 } 471 EXPORT_SYMBOL_GPL(ipu_idmac_select_buffer); 472 473 void ipu_idmac_clear_buffer(struct ipuv3_channel *channel, u32 buf_num) 474 { 475 struct ipu_soc *ipu = channel->ipu; 476 unsigned int chno = channel->num; 477 unsigned long flags; 478 479 spin_lock_irqsave(&ipu->lock, flags); 480 481 ipu_cm_write(ipu, 0xF0300000, IPU_GPR); /* write one to clear */ 482 switch (buf_num) { 483 case 0: 484 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF0_RDY(chno)); 485 break; 486 case 1: 487 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF1_RDY(chno)); 488 break; 489 case 2: 490 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF2_RDY(chno)); 491 break; 492 default: 493 break; 494 } 495 ipu_cm_write(ipu, 0x0, IPU_GPR); /* write one to set */ 496 497 spin_unlock_irqrestore(&ipu->lock, flags); 498 } 499 EXPORT_SYMBOL_GPL(ipu_idmac_clear_buffer); 500 501 int ipu_idmac_enable_channel(struct ipuv3_channel *channel) 502 { 503 struct ipu_soc *ipu = channel->ipu; 504 u32 val; 505 unsigned long flags; 506 507 spin_lock_irqsave(&ipu->lock, flags); 508 509 val = ipu_idmac_read(ipu, IDMAC_CHA_EN(channel->num)); 510 val |= idma_mask(channel->num); 511 ipu_idmac_write(ipu, val, IDMAC_CHA_EN(channel->num)); 512 513 spin_unlock_irqrestore(&ipu->lock, flags); 514 515 return 0; 516 } 517 EXPORT_SYMBOL_GPL(ipu_idmac_enable_channel); 518 519 bool ipu_idmac_channel_busy(struct ipu_soc *ipu, unsigned int chno) 520 { 521 return (ipu_idmac_read(ipu, IDMAC_CHA_BUSY(chno)) & idma_mask(chno)); 522 } 523 EXPORT_SYMBOL_GPL(ipu_idmac_channel_busy); 524 525 int ipu_idmac_wait_busy(struct ipuv3_channel *channel, int ms) 526 { 527 struct ipu_soc *ipu = channel->ipu; 528 unsigned long timeout; 529 530 timeout = jiffies + msecs_to_jiffies(ms); 531 while (ipu_idmac_read(ipu, IDMAC_CHA_BUSY(channel->num)) & 532 idma_mask(channel->num)) { 533 if (time_after(jiffies, timeout)) 534 return -ETIMEDOUT; 535 cpu_relax(); 536 } 537 538 return 0; 539 } 540 EXPORT_SYMBOL_GPL(ipu_idmac_wait_busy); 541 542 int ipu_idmac_disable_channel(struct ipuv3_channel *channel) 543 { 544 struct ipu_soc *ipu = channel->ipu; 545 u32 val; 546 unsigned long flags; 547 548 spin_lock_irqsave(&ipu->lock, flags); 549 550 /* Disable DMA channel(s) */ 551 val = ipu_idmac_read(ipu, IDMAC_CHA_EN(channel->num)); 552 val &= ~idma_mask(channel->num); 553 ipu_idmac_write(ipu, val, IDMAC_CHA_EN(channel->num)); 554 555 __ipu_idmac_reset_current_buffer(channel); 556 557 /* Set channel buffers NOT to be ready */ 558 ipu_cm_write(ipu, 0xf0000000, IPU_GPR); /* write one to clear */ 559 560 if (ipu_cm_read(ipu, IPU_CHA_BUF0_RDY(channel->num)) & 561 idma_mask(channel->num)) { 562 ipu_cm_write(ipu, idma_mask(channel->num), 563 IPU_CHA_BUF0_RDY(channel->num)); 564 } 565 566 if (ipu_cm_read(ipu, IPU_CHA_BUF1_RDY(channel->num)) & 567 idma_mask(channel->num)) { 568 ipu_cm_write(ipu, idma_mask(channel->num), 569 IPU_CHA_BUF1_RDY(channel->num)); 570 } 571 572 ipu_cm_write(ipu, 0x0, IPU_GPR); /* write one to set */ 573 574 /* Reset the double buffer */ 575 val = ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(channel->num)); 576 val &= ~idma_mask(channel->num); 577 ipu_cm_write(ipu, val, IPU_CHA_DB_MODE_SEL(channel->num)); 578 579 spin_unlock_irqrestore(&ipu->lock, flags); 580 581 return 0; 582 } 583 EXPORT_SYMBOL_GPL(ipu_idmac_disable_channel); 584 585 /* 586 * The imx6 rev. D TRM says that enabling the WM feature will increase 587 * a channel's priority. Refer to Table 36-8 Calculated priority value. 588 * The sub-module that is the sink or source for the channel must enable 589 * watermark signal for this to take effect (SMFC_WM for instance). 590 */ 591 void ipu_idmac_enable_watermark(struct ipuv3_channel *channel, bool enable) 592 { 593 struct ipu_soc *ipu = channel->ipu; 594 unsigned long flags; 595 u32 val; 596 597 spin_lock_irqsave(&ipu->lock, flags); 598 599 val = ipu_idmac_read(ipu, IDMAC_WM_EN(channel->num)); 600 if (enable) 601 val |= 1 << (channel->num % 32); 602 else 603 val &= ~(1 << (channel->num % 32)); 604 ipu_idmac_write(ipu, val, IDMAC_WM_EN(channel->num)); 605 606 spin_unlock_irqrestore(&ipu->lock, flags); 607 } 608 EXPORT_SYMBOL_GPL(ipu_idmac_enable_watermark); 609 610 static int ipu_memory_reset(struct ipu_soc *ipu) 611 { 612 unsigned long timeout; 613 614 ipu_cm_write(ipu, 0x807FFFFF, IPU_MEM_RST); 615 616 timeout = jiffies + msecs_to_jiffies(1000); 617 while (ipu_cm_read(ipu, IPU_MEM_RST) & 0x80000000) { 618 if (time_after(jiffies, timeout)) 619 return -ETIME; 620 cpu_relax(); 621 } 622 623 return 0; 624 } 625 626 /* 627 * Set the source mux for the given CSI. Selects either parallel or 628 * MIPI CSI2 sources. 629 */ 630 void ipu_set_csi_src_mux(struct ipu_soc *ipu, int csi_id, bool mipi_csi2) 631 { 632 unsigned long flags; 633 u32 val, mask; 634 635 mask = (csi_id == 1) ? IPU_CONF_CSI1_DATA_SOURCE : 636 IPU_CONF_CSI0_DATA_SOURCE; 637 638 spin_lock_irqsave(&ipu->lock, flags); 639 640 val = ipu_cm_read(ipu, IPU_CONF); 641 if (mipi_csi2) 642 val |= mask; 643 else 644 val &= ~mask; 645 ipu_cm_write(ipu, val, IPU_CONF); 646 647 spin_unlock_irqrestore(&ipu->lock, flags); 648 } 649 EXPORT_SYMBOL_GPL(ipu_set_csi_src_mux); 650 651 /* 652 * Set the source mux for the IC. Selects either CSI[01] or the VDI. 653 */ 654 void ipu_set_ic_src_mux(struct ipu_soc *ipu, int csi_id, bool vdi) 655 { 656 unsigned long flags; 657 u32 val; 658 659 spin_lock_irqsave(&ipu->lock, flags); 660 661 val = ipu_cm_read(ipu, IPU_CONF); 662 if (vdi) 663 val |= IPU_CONF_IC_INPUT; 664 else 665 val &= ~IPU_CONF_IC_INPUT; 666 667 if (csi_id == 1) 668 val |= IPU_CONF_CSI_SEL; 669 else 670 val &= ~IPU_CONF_CSI_SEL; 671 672 ipu_cm_write(ipu, val, IPU_CONF); 673 674 spin_unlock_irqrestore(&ipu->lock, flags); 675 } 676 EXPORT_SYMBOL_GPL(ipu_set_ic_src_mux); 677 678 679 /* Frame Synchronization Unit Channel Linking */ 680 681 struct fsu_link_reg_info { 682 int chno; 683 u32 reg; 684 u32 mask; 685 u32 val; 686 }; 687 688 struct fsu_link_info { 689 struct fsu_link_reg_info src; 690 struct fsu_link_reg_info sink; 691 }; 692 693 static const struct fsu_link_info fsu_link_info[] = { 694 { 695 .src = { IPUV3_CHANNEL_IC_PRP_ENC_MEM, IPU_FS_PROC_FLOW2, 696 FS_PRP_ENC_DEST_SEL_MASK, FS_PRP_ENC_DEST_SEL_IRT_ENC }, 697 .sink = { IPUV3_CHANNEL_MEM_ROT_ENC, IPU_FS_PROC_FLOW1, 698 FS_PRPENC_ROT_SRC_SEL_MASK, FS_PRPENC_ROT_SRC_SEL_ENC }, 699 }, { 700 .src = { IPUV3_CHANNEL_IC_PRP_VF_MEM, IPU_FS_PROC_FLOW2, 701 FS_PRPVF_DEST_SEL_MASK, FS_PRPVF_DEST_SEL_IRT_VF }, 702 .sink = { IPUV3_CHANNEL_MEM_ROT_VF, IPU_FS_PROC_FLOW1, 703 FS_PRPVF_ROT_SRC_SEL_MASK, FS_PRPVF_ROT_SRC_SEL_VF }, 704 }, { 705 .src = { IPUV3_CHANNEL_IC_PP_MEM, IPU_FS_PROC_FLOW2, 706 FS_PP_DEST_SEL_MASK, FS_PP_DEST_SEL_IRT_PP }, 707 .sink = { IPUV3_CHANNEL_MEM_ROT_PP, IPU_FS_PROC_FLOW1, 708 FS_PP_ROT_SRC_SEL_MASK, FS_PP_ROT_SRC_SEL_PP }, 709 }, { 710 .src = { IPUV3_CHANNEL_CSI_DIRECT, 0 }, 711 .sink = { IPUV3_CHANNEL_CSI_VDI_PREV, IPU_FS_PROC_FLOW1, 712 FS_VDI_SRC_SEL_MASK, FS_VDI_SRC_SEL_CSI_DIRECT }, 713 }, 714 }; 715 716 static const struct fsu_link_info *find_fsu_link_info(int src, int sink) 717 { 718 int i; 719 720 for (i = 0; i < ARRAY_SIZE(fsu_link_info); i++) { 721 if (src == fsu_link_info[i].src.chno && 722 sink == fsu_link_info[i].sink.chno) 723 return &fsu_link_info[i]; 724 } 725 726 return NULL; 727 } 728 729 /* 730 * Links a source channel to a sink channel in the FSU. 731 */ 732 int ipu_fsu_link(struct ipu_soc *ipu, int src_ch, int sink_ch) 733 { 734 const struct fsu_link_info *link; 735 u32 src_reg, sink_reg; 736 unsigned long flags; 737 738 link = find_fsu_link_info(src_ch, sink_ch); 739 if (!link) 740 return -EINVAL; 741 742 spin_lock_irqsave(&ipu->lock, flags); 743 744 if (link->src.mask) { 745 src_reg = ipu_cm_read(ipu, link->src.reg); 746 src_reg &= ~link->src.mask; 747 src_reg |= link->src.val; 748 ipu_cm_write(ipu, src_reg, link->src.reg); 749 } 750 751 if (link->sink.mask) { 752 sink_reg = ipu_cm_read(ipu, link->sink.reg); 753 sink_reg &= ~link->sink.mask; 754 sink_reg |= link->sink.val; 755 ipu_cm_write(ipu, sink_reg, link->sink.reg); 756 } 757 758 spin_unlock_irqrestore(&ipu->lock, flags); 759 return 0; 760 } 761 EXPORT_SYMBOL_GPL(ipu_fsu_link); 762 763 /* 764 * Unlinks source and sink channels in the FSU. 765 */ 766 int ipu_fsu_unlink(struct ipu_soc *ipu, int src_ch, int sink_ch) 767 { 768 const struct fsu_link_info *link; 769 u32 src_reg, sink_reg; 770 unsigned long flags; 771 772 link = find_fsu_link_info(src_ch, sink_ch); 773 if (!link) 774 return -EINVAL; 775 776 spin_lock_irqsave(&ipu->lock, flags); 777 778 if (link->src.mask) { 779 src_reg = ipu_cm_read(ipu, link->src.reg); 780 src_reg &= ~link->src.mask; 781 ipu_cm_write(ipu, src_reg, link->src.reg); 782 } 783 784 if (link->sink.mask) { 785 sink_reg = ipu_cm_read(ipu, link->sink.reg); 786 sink_reg &= ~link->sink.mask; 787 ipu_cm_write(ipu, sink_reg, link->sink.reg); 788 } 789 790 spin_unlock_irqrestore(&ipu->lock, flags); 791 return 0; 792 } 793 EXPORT_SYMBOL_GPL(ipu_fsu_unlink); 794 795 /* Link IDMAC channels in the FSU */ 796 int ipu_idmac_link(struct ipuv3_channel *src, struct ipuv3_channel *sink) 797 { 798 return ipu_fsu_link(src->ipu, src->num, sink->num); 799 } 800 EXPORT_SYMBOL_GPL(ipu_idmac_link); 801 802 /* Unlink IDMAC channels in the FSU */ 803 int ipu_idmac_unlink(struct ipuv3_channel *src, struct ipuv3_channel *sink) 804 { 805 return ipu_fsu_unlink(src->ipu, src->num, sink->num); 806 } 807 EXPORT_SYMBOL_GPL(ipu_idmac_unlink); 808 809 struct ipu_devtype { 810 const char *name; 811 unsigned long cm_ofs; 812 unsigned long cpmem_ofs; 813 unsigned long srm_ofs; 814 unsigned long tpm_ofs; 815 unsigned long csi0_ofs; 816 unsigned long csi1_ofs; 817 unsigned long ic_ofs; 818 unsigned long disp0_ofs; 819 unsigned long disp1_ofs; 820 unsigned long dc_tmpl_ofs; 821 unsigned long vdi_ofs; 822 enum ipuv3_type type; 823 }; 824 825 static struct ipu_devtype ipu_type_imx51 = { 826 .name = "IPUv3EX", 827 .cm_ofs = 0x1e000000, 828 .cpmem_ofs = 0x1f000000, 829 .srm_ofs = 0x1f040000, 830 .tpm_ofs = 0x1f060000, 831 .csi0_ofs = 0x1e030000, 832 .csi1_ofs = 0x1e038000, 833 .ic_ofs = 0x1e020000, 834 .disp0_ofs = 0x1e040000, 835 .disp1_ofs = 0x1e048000, 836 .dc_tmpl_ofs = 0x1f080000, 837 .vdi_ofs = 0x1e068000, 838 .type = IPUV3EX, 839 }; 840 841 static struct ipu_devtype ipu_type_imx53 = { 842 .name = "IPUv3M", 843 .cm_ofs = 0x06000000, 844 .cpmem_ofs = 0x07000000, 845 .srm_ofs = 0x07040000, 846 .tpm_ofs = 0x07060000, 847 .csi0_ofs = 0x06030000, 848 .csi1_ofs = 0x06038000, 849 .ic_ofs = 0x06020000, 850 .disp0_ofs = 0x06040000, 851 .disp1_ofs = 0x06048000, 852 .dc_tmpl_ofs = 0x07080000, 853 .vdi_ofs = 0x06068000, 854 .type = IPUV3M, 855 }; 856 857 static struct ipu_devtype ipu_type_imx6q = { 858 .name = "IPUv3H", 859 .cm_ofs = 0x00200000, 860 .cpmem_ofs = 0x00300000, 861 .srm_ofs = 0x00340000, 862 .tpm_ofs = 0x00360000, 863 .csi0_ofs = 0x00230000, 864 .csi1_ofs = 0x00238000, 865 .ic_ofs = 0x00220000, 866 .disp0_ofs = 0x00240000, 867 .disp1_ofs = 0x00248000, 868 .dc_tmpl_ofs = 0x00380000, 869 .vdi_ofs = 0x00268000, 870 .type = IPUV3H, 871 }; 872 873 static const struct of_device_id imx_ipu_dt_ids[] = { 874 { .compatible = "fsl,imx51-ipu", .data = &ipu_type_imx51, }, 875 { .compatible = "fsl,imx53-ipu", .data = &ipu_type_imx53, }, 876 { .compatible = "fsl,imx6q-ipu", .data = &ipu_type_imx6q, }, 877 { .compatible = "fsl,imx6qp-ipu", .data = &ipu_type_imx6q, }, 878 { /* sentinel */ } 879 }; 880 MODULE_DEVICE_TABLE(of, imx_ipu_dt_ids); 881 882 static int ipu_submodules_init(struct ipu_soc *ipu, 883 struct platform_device *pdev, unsigned long ipu_base, 884 struct clk *ipu_clk) 885 { 886 char *unit; 887 int ret; 888 struct device *dev = &pdev->dev; 889 const struct ipu_devtype *devtype = ipu->devtype; 890 891 ret = ipu_cpmem_init(ipu, dev, ipu_base + devtype->cpmem_ofs); 892 if (ret) { 893 unit = "cpmem"; 894 goto err_cpmem; 895 } 896 897 ret = ipu_csi_init(ipu, dev, 0, ipu_base + devtype->csi0_ofs, 898 IPU_CONF_CSI0_EN, ipu_clk); 899 if (ret) { 900 unit = "csi0"; 901 goto err_csi_0; 902 } 903 904 ret = ipu_csi_init(ipu, dev, 1, ipu_base + devtype->csi1_ofs, 905 IPU_CONF_CSI1_EN, ipu_clk); 906 if (ret) { 907 unit = "csi1"; 908 goto err_csi_1; 909 } 910 911 ret = ipu_ic_init(ipu, dev, 912 ipu_base + devtype->ic_ofs, 913 ipu_base + devtype->tpm_ofs); 914 if (ret) { 915 unit = "ic"; 916 goto err_ic; 917 } 918 919 ret = ipu_vdi_init(ipu, dev, ipu_base + devtype->vdi_ofs, 920 IPU_CONF_VDI_EN | IPU_CONF_ISP_EN | 921 IPU_CONF_IC_INPUT); 922 if (ret) { 923 unit = "vdi"; 924 goto err_vdi; 925 } 926 927 ret = ipu_image_convert_init(ipu, dev); 928 if (ret) { 929 unit = "image_convert"; 930 goto err_image_convert; 931 } 932 933 ret = ipu_di_init(ipu, dev, 0, ipu_base + devtype->disp0_ofs, 934 IPU_CONF_DI0_EN, ipu_clk); 935 if (ret) { 936 unit = "di0"; 937 goto err_di_0; 938 } 939 940 ret = ipu_di_init(ipu, dev, 1, ipu_base + devtype->disp1_ofs, 941 IPU_CONF_DI1_EN, ipu_clk); 942 if (ret) { 943 unit = "di1"; 944 goto err_di_1; 945 } 946 947 ret = ipu_dc_init(ipu, dev, ipu_base + devtype->cm_ofs + 948 IPU_CM_DC_REG_OFS, ipu_base + devtype->dc_tmpl_ofs); 949 if (ret) { 950 unit = "dc_template"; 951 goto err_dc; 952 } 953 954 ret = ipu_dmfc_init(ipu, dev, ipu_base + 955 devtype->cm_ofs + IPU_CM_DMFC_REG_OFS, ipu_clk); 956 if (ret) { 957 unit = "dmfc"; 958 goto err_dmfc; 959 } 960 961 ret = ipu_dp_init(ipu, dev, ipu_base + devtype->srm_ofs); 962 if (ret) { 963 unit = "dp"; 964 goto err_dp; 965 } 966 967 ret = ipu_smfc_init(ipu, dev, ipu_base + 968 devtype->cm_ofs + IPU_CM_SMFC_REG_OFS); 969 if (ret) { 970 unit = "smfc"; 971 goto err_smfc; 972 } 973 974 return 0; 975 976 err_smfc: 977 ipu_dp_exit(ipu); 978 err_dp: 979 ipu_dmfc_exit(ipu); 980 err_dmfc: 981 ipu_dc_exit(ipu); 982 err_dc: 983 ipu_di_exit(ipu, 1); 984 err_di_1: 985 ipu_di_exit(ipu, 0); 986 err_di_0: 987 ipu_image_convert_exit(ipu); 988 err_image_convert: 989 ipu_vdi_exit(ipu); 990 err_vdi: 991 ipu_ic_exit(ipu); 992 err_ic: 993 ipu_csi_exit(ipu, 1); 994 err_csi_1: 995 ipu_csi_exit(ipu, 0); 996 err_csi_0: 997 ipu_cpmem_exit(ipu); 998 err_cpmem: 999 dev_err(&pdev->dev, "init %s failed with %d\n", unit, ret); 1000 return ret; 1001 } 1002 1003 static void ipu_irq_handle(struct ipu_soc *ipu, const int *regs, int num_regs) 1004 { 1005 unsigned long status; 1006 int i, bit; 1007 1008 for (i = 0; i < num_regs; i++) { 1009 1010 status = ipu_cm_read(ipu, IPU_INT_STAT(regs[i])); 1011 status &= ipu_cm_read(ipu, IPU_INT_CTRL(regs[i])); 1012 1013 for_each_set_bit(bit, &status, 32) 1014 generic_handle_domain_irq(ipu->domain, 1015 regs[i] * 32 + bit); 1016 } 1017 } 1018 1019 static void ipu_irq_handler(struct irq_desc *desc) 1020 { 1021 struct ipu_soc *ipu = irq_desc_get_handler_data(desc); 1022 struct irq_chip *chip = irq_desc_get_chip(desc); 1023 static const int int_reg[] = { 0, 1, 2, 3, 10, 11, 12, 13, 14}; 1024 1025 chained_irq_enter(chip, desc); 1026 1027 ipu_irq_handle(ipu, int_reg, ARRAY_SIZE(int_reg)); 1028 1029 chained_irq_exit(chip, desc); 1030 } 1031 1032 static void ipu_err_irq_handler(struct irq_desc *desc) 1033 { 1034 struct ipu_soc *ipu = irq_desc_get_handler_data(desc); 1035 struct irq_chip *chip = irq_desc_get_chip(desc); 1036 static const int int_reg[] = { 4, 5, 8, 9}; 1037 1038 chained_irq_enter(chip, desc); 1039 1040 ipu_irq_handle(ipu, int_reg, ARRAY_SIZE(int_reg)); 1041 1042 chained_irq_exit(chip, desc); 1043 } 1044 1045 int ipu_map_irq(struct ipu_soc *ipu, int irq) 1046 { 1047 int virq; 1048 1049 virq = irq_linear_revmap(ipu->domain, irq); 1050 if (!virq) 1051 virq = irq_create_mapping(ipu->domain, irq); 1052 1053 return virq; 1054 } 1055 EXPORT_SYMBOL_GPL(ipu_map_irq); 1056 1057 int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel, 1058 enum ipu_channel_irq irq_type) 1059 { 1060 return ipu_map_irq(ipu, irq_type + channel->num); 1061 } 1062 EXPORT_SYMBOL_GPL(ipu_idmac_channel_irq); 1063 1064 static void ipu_submodules_exit(struct ipu_soc *ipu) 1065 { 1066 ipu_smfc_exit(ipu); 1067 ipu_dp_exit(ipu); 1068 ipu_dmfc_exit(ipu); 1069 ipu_dc_exit(ipu); 1070 ipu_di_exit(ipu, 1); 1071 ipu_di_exit(ipu, 0); 1072 ipu_image_convert_exit(ipu); 1073 ipu_vdi_exit(ipu); 1074 ipu_ic_exit(ipu); 1075 ipu_csi_exit(ipu, 1); 1076 ipu_csi_exit(ipu, 0); 1077 ipu_cpmem_exit(ipu); 1078 } 1079 1080 static int platform_remove_devices_fn(struct device *dev, void *unused) 1081 { 1082 struct platform_device *pdev = to_platform_device(dev); 1083 1084 platform_device_unregister(pdev); 1085 1086 return 0; 1087 } 1088 1089 static void platform_device_unregister_children(struct platform_device *pdev) 1090 { 1091 device_for_each_child(&pdev->dev, NULL, platform_remove_devices_fn); 1092 } 1093 1094 struct ipu_platform_reg { 1095 struct ipu_client_platformdata pdata; 1096 const char *name; 1097 }; 1098 1099 /* These must be in the order of the corresponding device tree port nodes */ 1100 static struct ipu_platform_reg client_reg[] = { 1101 { 1102 .pdata = { 1103 .csi = 0, 1104 .dma[0] = IPUV3_CHANNEL_CSI0, 1105 .dma[1] = -EINVAL, 1106 }, 1107 .name = "imx-ipuv3-csi", 1108 }, { 1109 .pdata = { 1110 .csi = 1, 1111 .dma[0] = IPUV3_CHANNEL_CSI1, 1112 .dma[1] = -EINVAL, 1113 }, 1114 .name = "imx-ipuv3-csi", 1115 }, { 1116 .pdata = { 1117 .di = 0, 1118 .dc = 5, 1119 .dp = IPU_DP_FLOW_SYNC_BG, 1120 .dma[0] = IPUV3_CHANNEL_MEM_BG_SYNC, 1121 .dma[1] = IPUV3_CHANNEL_MEM_FG_SYNC, 1122 }, 1123 .name = "imx-ipuv3-crtc", 1124 }, { 1125 .pdata = { 1126 .di = 1, 1127 .dc = 1, 1128 .dp = -EINVAL, 1129 .dma[0] = IPUV3_CHANNEL_MEM_DC_SYNC, 1130 .dma[1] = -EINVAL, 1131 }, 1132 .name = "imx-ipuv3-crtc", 1133 }, 1134 }; 1135 1136 static DEFINE_MUTEX(ipu_client_id_mutex); 1137 static int ipu_client_id; 1138 1139 static int ipu_add_client_devices(struct ipu_soc *ipu, unsigned long ipu_base) 1140 { 1141 struct device *dev = ipu->dev; 1142 unsigned i; 1143 int id, ret; 1144 1145 mutex_lock(&ipu_client_id_mutex); 1146 id = ipu_client_id; 1147 ipu_client_id += ARRAY_SIZE(client_reg); 1148 mutex_unlock(&ipu_client_id_mutex); 1149 1150 for (i = 0; i < ARRAY_SIZE(client_reg); i++) { 1151 struct ipu_platform_reg *reg = &client_reg[i]; 1152 struct platform_device *pdev; 1153 struct device_node *of_node; 1154 1155 /* Associate subdevice with the corresponding port node */ 1156 of_node = of_graph_get_port_by_id(dev->of_node, i); 1157 if (!of_node) { 1158 dev_info(dev, 1159 "no port@%d node in %pOF, not using %s%d\n", 1160 i, dev->of_node, 1161 (i / 2) ? "DI" : "CSI", i % 2); 1162 continue; 1163 } 1164 1165 pdev = platform_device_alloc(reg->name, id++); 1166 if (!pdev) { 1167 ret = -ENOMEM; 1168 of_node_put(of_node); 1169 goto err_register; 1170 } 1171 1172 pdev->dev.parent = dev; 1173 1174 reg->pdata.of_node = of_node; 1175 ret = platform_device_add_data(pdev, ®->pdata, 1176 sizeof(reg->pdata)); 1177 if (!ret) 1178 ret = platform_device_add(pdev); 1179 if (ret) { 1180 platform_device_put(pdev); 1181 goto err_register; 1182 } 1183 } 1184 1185 return 0; 1186 1187 err_register: 1188 platform_device_unregister_children(to_platform_device(dev)); 1189 1190 return ret; 1191 } 1192 1193 1194 static int ipu_irq_init(struct ipu_soc *ipu) 1195 { 1196 struct irq_chip_generic *gc; 1197 struct irq_chip_type *ct; 1198 unsigned long unused[IPU_NUM_IRQS / 32] = { 1199 0x400100d0, 0xffe000fd, 1200 0x400100d0, 0xffe000fd, 1201 0x400100d0, 0xffe000fd, 1202 0x4077ffff, 0xffe7e1fd, 1203 0x23fffffe, 0x8880fff0, 1204 0xf98fe7d0, 0xfff81fff, 1205 0x400100d0, 0xffe000fd, 1206 0x00000000, 1207 }; 1208 int ret, i; 1209 1210 ipu->domain = irq_domain_add_linear(ipu->dev->of_node, IPU_NUM_IRQS, 1211 &irq_generic_chip_ops, ipu); 1212 if (!ipu->domain) { 1213 dev_err(ipu->dev, "failed to add irq domain\n"); 1214 return -ENODEV; 1215 } 1216 1217 ret = irq_alloc_domain_generic_chips(ipu->domain, 32, 1, "IPU", 1218 handle_level_irq, 0, 0, 0); 1219 if (ret < 0) { 1220 dev_err(ipu->dev, "failed to alloc generic irq chips\n"); 1221 irq_domain_remove(ipu->domain); 1222 return ret; 1223 } 1224 1225 /* Mask and clear all interrupts */ 1226 for (i = 0; i < IPU_NUM_IRQS; i += 32) { 1227 ipu_cm_write(ipu, 0, IPU_INT_CTRL(i / 32)); 1228 ipu_cm_write(ipu, ~unused[i / 32], IPU_INT_STAT(i / 32)); 1229 } 1230 1231 for (i = 0; i < IPU_NUM_IRQS; i += 32) { 1232 gc = irq_get_domain_generic_chip(ipu->domain, i); 1233 gc->reg_base = ipu->cm_reg; 1234 gc->unused = unused[i / 32]; 1235 ct = gc->chip_types; 1236 ct->chip.irq_ack = irq_gc_ack_set_bit; 1237 ct->chip.irq_mask = irq_gc_mask_clr_bit; 1238 ct->chip.irq_unmask = irq_gc_mask_set_bit; 1239 ct->regs.ack = IPU_INT_STAT(i / 32); 1240 ct->regs.mask = IPU_INT_CTRL(i / 32); 1241 } 1242 1243 irq_set_chained_handler_and_data(ipu->irq_sync, ipu_irq_handler, ipu); 1244 irq_set_chained_handler_and_data(ipu->irq_err, ipu_err_irq_handler, 1245 ipu); 1246 1247 return 0; 1248 } 1249 1250 static void ipu_irq_exit(struct ipu_soc *ipu) 1251 { 1252 int i, irq; 1253 1254 irq_set_chained_handler_and_data(ipu->irq_err, NULL, NULL); 1255 irq_set_chained_handler_and_data(ipu->irq_sync, NULL, NULL); 1256 1257 /* TODO: remove irq_domain_generic_chips */ 1258 1259 for (i = 0; i < IPU_NUM_IRQS; i++) { 1260 irq = irq_linear_revmap(ipu->domain, i); 1261 if (irq) 1262 irq_dispose_mapping(irq); 1263 } 1264 1265 irq_domain_remove(ipu->domain); 1266 } 1267 1268 void ipu_dump(struct ipu_soc *ipu) 1269 { 1270 int i; 1271 1272 dev_dbg(ipu->dev, "IPU_CONF = \t0x%08X\n", 1273 ipu_cm_read(ipu, IPU_CONF)); 1274 dev_dbg(ipu->dev, "IDMAC_CONF = \t0x%08X\n", 1275 ipu_idmac_read(ipu, IDMAC_CONF)); 1276 dev_dbg(ipu->dev, "IDMAC_CHA_EN1 = \t0x%08X\n", 1277 ipu_idmac_read(ipu, IDMAC_CHA_EN(0))); 1278 dev_dbg(ipu->dev, "IDMAC_CHA_EN2 = \t0x%08X\n", 1279 ipu_idmac_read(ipu, IDMAC_CHA_EN(32))); 1280 dev_dbg(ipu->dev, "IDMAC_CHA_PRI1 = \t0x%08X\n", 1281 ipu_idmac_read(ipu, IDMAC_CHA_PRI(0))); 1282 dev_dbg(ipu->dev, "IDMAC_CHA_PRI2 = \t0x%08X\n", 1283 ipu_idmac_read(ipu, IDMAC_CHA_PRI(32))); 1284 dev_dbg(ipu->dev, "IDMAC_BAND_EN1 = \t0x%08X\n", 1285 ipu_idmac_read(ipu, IDMAC_BAND_EN(0))); 1286 dev_dbg(ipu->dev, "IDMAC_BAND_EN2 = \t0x%08X\n", 1287 ipu_idmac_read(ipu, IDMAC_BAND_EN(32))); 1288 dev_dbg(ipu->dev, "IPU_CHA_DB_MODE_SEL0 = \t0x%08X\n", 1289 ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(0))); 1290 dev_dbg(ipu->dev, "IPU_CHA_DB_MODE_SEL1 = \t0x%08X\n", 1291 ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(32))); 1292 dev_dbg(ipu->dev, "IPU_FS_PROC_FLOW1 = \t0x%08X\n", 1293 ipu_cm_read(ipu, IPU_FS_PROC_FLOW1)); 1294 dev_dbg(ipu->dev, "IPU_FS_PROC_FLOW2 = \t0x%08X\n", 1295 ipu_cm_read(ipu, IPU_FS_PROC_FLOW2)); 1296 dev_dbg(ipu->dev, "IPU_FS_PROC_FLOW3 = \t0x%08X\n", 1297 ipu_cm_read(ipu, IPU_FS_PROC_FLOW3)); 1298 dev_dbg(ipu->dev, "IPU_FS_DISP_FLOW1 = \t0x%08X\n", 1299 ipu_cm_read(ipu, IPU_FS_DISP_FLOW1)); 1300 for (i = 0; i < 15; i++) 1301 dev_dbg(ipu->dev, "IPU_INT_CTRL(%d) = \t%08X\n", i, 1302 ipu_cm_read(ipu, IPU_INT_CTRL(i))); 1303 } 1304 EXPORT_SYMBOL_GPL(ipu_dump); 1305 1306 static int ipu_probe(struct platform_device *pdev) 1307 { 1308 struct device_node *np = pdev->dev.of_node; 1309 struct ipu_soc *ipu; 1310 struct resource *res; 1311 unsigned long ipu_base; 1312 int ret, irq_sync, irq_err; 1313 const struct ipu_devtype *devtype; 1314 1315 devtype = of_device_get_match_data(&pdev->dev); 1316 if (!devtype) 1317 return -EINVAL; 1318 1319 irq_sync = platform_get_irq(pdev, 0); 1320 irq_err = platform_get_irq(pdev, 1); 1321 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1322 1323 dev_dbg(&pdev->dev, "irq_sync: %d irq_err: %d\n", 1324 irq_sync, irq_err); 1325 1326 if (!res || irq_sync < 0 || irq_err < 0) 1327 return -ENODEV; 1328 1329 ipu_base = res->start; 1330 1331 ipu = devm_kzalloc(&pdev->dev, sizeof(*ipu), GFP_KERNEL); 1332 if (!ipu) 1333 return -ENODEV; 1334 1335 ipu->id = of_alias_get_id(np, "ipu"); 1336 if (ipu->id < 0) 1337 ipu->id = 0; 1338 1339 if (of_device_is_compatible(np, "fsl,imx6qp-ipu") && 1340 IS_ENABLED(CONFIG_DRM)) { 1341 ipu->prg_priv = ipu_prg_lookup_by_phandle(&pdev->dev, 1342 "fsl,prg", ipu->id); 1343 if (!ipu->prg_priv) 1344 return -EPROBE_DEFER; 1345 } 1346 1347 ipu->devtype = devtype; 1348 ipu->ipu_type = devtype->type; 1349 1350 spin_lock_init(&ipu->lock); 1351 mutex_init(&ipu->channel_lock); 1352 INIT_LIST_HEAD(&ipu->channels); 1353 1354 dev_dbg(&pdev->dev, "cm_reg: 0x%08lx\n", 1355 ipu_base + devtype->cm_ofs); 1356 dev_dbg(&pdev->dev, "idmac: 0x%08lx\n", 1357 ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS); 1358 dev_dbg(&pdev->dev, "cpmem: 0x%08lx\n", 1359 ipu_base + devtype->cpmem_ofs); 1360 dev_dbg(&pdev->dev, "csi0: 0x%08lx\n", 1361 ipu_base + devtype->csi0_ofs); 1362 dev_dbg(&pdev->dev, "csi1: 0x%08lx\n", 1363 ipu_base + devtype->csi1_ofs); 1364 dev_dbg(&pdev->dev, "ic: 0x%08lx\n", 1365 ipu_base + devtype->ic_ofs); 1366 dev_dbg(&pdev->dev, "disp0: 0x%08lx\n", 1367 ipu_base + devtype->disp0_ofs); 1368 dev_dbg(&pdev->dev, "disp1: 0x%08lx\n", 1369 ipu_base + devtype->disp1_ofs); 1370 dev_dbg(&pdev->dev, "srm: 0x%08lx\n", 1371 ipu_base + devtype->srm_ofs); 1372 dev_dbg(&pdev->dev, "tpm: 0x%08lx\n", 1373 ipu_base + devtype->tpm_ofs); 1374 dev_dbg(&pdev->dev, "dc: 0x%08lx\n", 1375 ipu_base + devtype->cm_ofs + IPU_CM_DC_REG_OFS); 1376 dev_dbg(&pdev->dev, "ic: 0x%08lx\n", 1377 ipu_base + devtype->cm_ofs + IPU_CM_IC_REG_OFS); 1378 dev_dbg(&pdev->dev, "dmfc: 0x%08lx\n", 1379 ipu_base + devtype->cm_ofs + IPU_CM_DMFC_REG_OFS); 1380 dev_dbg(&pdev->dev, "vdi: 0x%08lx\n", 1381 ipu_base + devtype->vdi_ofs); 1382 1383 ipu->cm_reg = devm_ioremap(&pdev->dev, 1384 ipu_base + devtype->cm_ofs, PAGE_SIZE); 1385 ipu->idmac_reg = devm_ioremap(&pdev->dev, 1386 ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS, 1387 PAGE_SIZE); 1388 1389 if (!ipu->cm_reg || !ipu->idmac_reg) 1390 return -ENOMEM; 1391 1392 ipu->clk = devm_clk_get(&pdev->dev, "bus"); 1393 if (IS_ERR(ipu->clk)) { 1394 ret = PTR_ERR(ipu->clk); 1395 dev_err(&pdev->dev, "clk_get failed with %d", ret); 1396 return ret; 1397 } 1398 1399 platform_set_drvdata(pdev, ipu); 1400 1401 ret = clk_prepare_enable(ipu->clk); 1402 if (ret) { 1403 dev_err(&pdev->dev, "clk_prepare_enable failed: %d\n", ret); 1404 return ret; 1405 } 1406 1407 ipu->dev = &pdev->dev; 1408 ipu->irq_sync = irq_sync; 1409 ipu->irq_err = irq_err; 1410 1411 ret = device_reset(&pdev->dev); 1412 if (ret) { 1413 dev_err(&pdev->dev, "failed to reset: %d\n", ret); 1414 goto out_failed_reset; 1415 } 1416 ret = ipu_memory_reset(ipu); 1417 if (ret) 1418 goto out_failed_reset; 1419 1420 ret = ipu_irq_init(ipu); 1421 if (ret) 1422 goto out_failed_irq; 1423 1424 /* Set MCU_T to divide MCU access window into 2 */ 1425 ipu_cm_write(ipu, 0x00400000L | (IPU_MCU_T_DEFAULT << 18), 1426 IPU_DISP_GEN); 1427 1428 ret = ipu_submodules_init(ipu, pdev, ipu_base, ipu->clk); 1429 if (ret) 1430 goto failed_submodules_init; 1431 1432 ret = ipu_add_client_devices(ipu, ipu_base); 1433 if (ret) { 1434 dev_err(&pdev->dev, "adding client devices failed with %d\n", 1435 ret); 1436 goto failed_add_clients; 1437 } 1438 1439 dev_info(&pdev->dev, "%s probed\n", devtype->name); 1440 1441 return 0; 1442 1443 failed_add_clients: 1444 ipu_submodules_exit(ipu); 1445 failed_submodules_init: 1446 ipu_irq_exit(ipu); 1447 out_failed_irq: 1448 out_failed_reset: 1449 clk_disable_unprepare(ipu->clk); 1450 return ret; 1451 } 1452 1453 static int ipu_remove(struct platform_device *pdev) 1454 { 1455 struct ipu_soc *ipu = platform_get_drvdata(pdev); 1456 1457 platform_device_unregister_children(pdev); 1458 ipu_submodules_exit(ipu); 1459 ipu_irq_exit(ipu); 1460 1461 clk_disable_unprepare(ipu->clk); 1462 1463 return 0; 1464 } 1465 1466 static struct platform_driver imx_ipu_driver = { 1467 .driver = { 1468 .name = "imx-ipuv3", 1469 .of_match_table = imx_ipu_dt_ids, 1470 }, 1471 .probe = ipu_probe, 1472 .remove = ipu_remove, 1473 }; 1474 1475 static struct platform_driver * const drivers[] = { 1476 #if IS_ENABLED(CONFIG_DRM) 1477 &ipu_pre_drv, 1478 &ipu_prg_drv, 1479 #endif 1480 &imx_ipu_driver, 1481 }; 1482 1483 static int __init imx_ipu_init(void) 1484 { 1485 return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); 1486 } 1487 module_init(imx_ipu_init); 1488 1489 static void __exit imx_ipu_exit(void) 1490 { 1491 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); 1492 } 1493 module_exit(imx_ipu_exit); 1494 1495 MODULE_ALIAS("platform:imx-ipuv3"); 1496 MODULE_DESCRIPTION("i.MX IPU v3 driver"); 1497 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); 1498 MODULE_LICENSE("GPL"); 1499