1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Samsung S5P Multi Format Codec v 5.1 4 * 5 * Copyright (c) 2011 Samsung Electronics Co., Ltd. 6 * Kamil Debski, <k.debski@samsung.com> 7 */ 8 9 #include <linux/clk.h> 10 #include <linux/delay.h> 11 #include <linux/interrupt.h> 12 #include <linux/io.h> 13 #include <linux/module.h> 14 #include <linux/platform_device.h> 15 #include <linux/sched.h> 16 #include <linux/slab.h> 17 #include <linux/videodev2.h> 18 #include <media/v4l2-event.h> 19 #include <linux/workqueue.h> 20 #include <linux/of.h> 21 #include <linux/of_device.h> 22 #include <linux/of_reserved_mem.h> 23 #include <media/videobuf2-v4l2.h> 24 #include "s5p_mfc_common.h" 25 #include "s5p_mfc_ctrl.h" 26 #include "s5p_mfc_debug.h" 27 #include "s5p_mfc_dec.h" 28 #include "s5p_mfc_enc.h" 29 #include "s5p_mfc_intr.h" 30 #include "s5p_mfc_iommu.h" 31 #include "s5p_mfc_opr.h" 32 #include "s5p_mfc_cmd.h" 33 #include "s5p_mfc_pm.h" 34 35 #define S5P_MFC_DEC_NAME "s5p-mfc-dec" 36 #define S5P_MFC_ENC_NAME "s5p-mfc-enc" 37 38 int mfc_debug_level; 39 module_param_named(debug, mfc_debug_level, int, 0644); 40 MODULE_PARM_DESC(debug, "Debug level - higher value produces more verbose messages"); 41 42 static char *mfc_mem_size; 43 module_param_named(mem, mfc_mem_size, charp, 0644); 44 MODULE_PARM_DESC(mem, "Preallocated memory size for the firmware and context buffers"); 45 46 /* Helper functions for interrupt processing */ 47 48 /* Remove from hw execution round robin */ 49 void clear_work_bit(struct s5p_mfc_ctx *ctx) 50 { 51 struct s5p_mfc_dev *dev = ctx->dev; 52 53 spin_lock(&dev->condlock); 54 __clear_bit(ctx->num, &dev->ctx_work_bits); 55 spin_unlock(&dev->condlock); 56 } 57 58 /* Add to hw execution round robin */ 59 void set_work_bit(struct s5p_mfc_ctx *ctx) 60 { 61 struct s5p_mfc_dev *dev = ctx->dev; 62 63 spin_lock(&dev->condlock); 64 __set_bit(ctx->num, &dev->ctx_work_bits); 65 spin_unlock(&dev->condlock); 66 } 67 68 /* Remove from hw execution round robin */ 69 void clear_work_bit_irqsave(struct s5p_mfc_ctx *ctx) 70 { 71 struct s5p_mfc_dev *dev = ctx->dev; 72 unsigned long flags; 73 74 spin_lock_irqsave(&dev->condlock, flags); 75 __clear_bit(ctx->num, &dev->ctx_work_bits); 76 spin_unlock_irqrestore(&dev->condlock, flags); 77 } 78 79 /* Add to hw execution round robin */ 80 void set_work_bit_irqsave(struct s5p_mfc_ctx *ctx) 81 { 82 struct s5p_mfc_dev *dev = ctx->dev; 83 unsigned long flags; 84 85 spin_lock_irqsave(&dev->condlock, flags); 86 __set_bit(ctx->num, &dev->ctx_work_bits); 87 spin_unlock_irqrestore(&dev->condlock, flags); 88 } 89 90 int s5p_mfc_get_new_ctx(struct s5p_mfc_dev *dev) 91 { 92 unsigned long flags; 93 int ctx; 94 95 spin_lock_irqsave(&dev->condlock, flags); 96 ctx = dev->curr_ctx; 97 do { 98 ctx = (ctx + 1) % MFC_NUM_CONTEXTS; 99 if (ctx == dev->curr_ctx) { 100 if (!test_bit(ctx, &dev->ctx_work_bits)) 101 ctx = -EAGAIN; 102 break; 103 } 104 } while (!test_bit(ctx, &dev->ctx_work_bits)); 105 spin_unlock_irqrestore(&dev->condlock, flags); 106 107 return ctx; 108 } 109 110 /* Wake up context wait_queue */ 111 static void wake_up_ctx(struct s5p_mfc_ctx *ctx, unsigned int reason, 112 unsigned int err) 113 { 114 ctx->int_cond = 1; 115 ctx->int_type = reason; 116 ctx->int_err = err; 117 wake_up(&ctx->queue); 118 } 119 120 /* Wake up device wait_queue */ 121 static void wake_up_dev(struct s5p_mfc_dev *dev, unsigned int reason, 122 unsigned int err) 123 { 124 dev->int_cond = 1; 125 dev->int_type = reason; 126 dev->int_err = err; 127 wake_up(&dev->queue); 128 } 129 130 void s5p_mfc_cleanup_queue(struct list_head *lh, struct vb2_queue *vq) 131 { 132 struct s5p_mfc_buf *b; 133 int i; 134 135 while (!list_empty(lh)) { 136 b = list_entry(lh->next, struct s5p_mfc_buf, list); 137 for (i = 0; i < b->b->vb2_buf.num_planes; i++) 138 vb2_set_plane_payload(&b->b->vb2_buf, i, 0); 139 vb2_buffer_done(&b->b->vb2_buf, VB2_BUF_STATE_ERROR); 140 list_del(&b->list); 141 } 142 } 143 144 static void s5p_mfc_watchdog(struct timer_list *t) 145 { 146 struct s5p_mfc_dev *dev = from_timer(dev, t, watchdog_timer); 147 148 if (test_bit(0, &dev->hw_lock)) 149 atomic_inc(&dev->watchdog_cnt); 150 if (atomic_read(&dev->watchdog_cnt) >= MFC_WATCHDOG_CNT) { 151 /* 152 * This means that hw is busy and no interrupts were 153 * generated by hw for the Nth time of running this 154 * watchdog timer. This usually means a serious hw 155 * error. Now it is time to kill all instances and 156 * reset the MFC. 157 */ 158 mfc_err("Time out during waiting for HW\n"); 159 schedule_work(&dev->watchdog_work); 160 } 161 dev->watchdog_timer.expires = jiffies + 162 msecs_to_jiffies(MFC_WATCHDOG_INTERVAL); 163 add_timer(&dev->watchdog_timer); 164 } 165 166 static void s5p_mfc_watchdog_worker(struct work_struct *work) 167 { 168 struct s5p_mfc_dev *dev; 169 struct s5p_mfc_ctx *ctx; 170 unsigned long flags; 171 int mutex_locked; 172 int i, ret; 173 174 dev = container_of(work, struct s5p_mfc_dev, watchdog_work); 175 176 mfc_err("Driver timeout error handling\n"); 177 /* 178 * Lock the mutex that protects open and release. 179 * This is necessary as they may load and unload firmware. 180 */ 181 mutex_locked = mutex_trylock(&dev->mfc_mutex); 182 if (!mutex_locked) 183 mfc_err("Error: some instance may be closing/opening\n"); 184 spin_lock_irqsave(&dev->irqlock, flags); 185 186 s5p_mfc_clock_off(); 187 188 for (i = 0; i < MFC_NUM_CONTEXTS; i++) { 189 ctx = dev->ctx[i]; 190 if (!ctx) 191 continue; 192 ctx->state = MFCINST_ERROR; 193 s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst); 194 s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src); 195 clear_work_bit(ctx); 196 wake_up_ctx(ctx, S5P_MFC_R2H_CMD_ERR_RET, 0); 197 } 198 clear_bit(0, &dev->hw_lock); 199 spin_unlock_irqrestore(&dev->irqlock, flags); 200 201 /* De-init MFC */ 202 s5p_mfc_deinit_hw(dev); 203 204 /* 205 * Double check if there is at least one instance running. 206 * If no instance is in memory than no firmware should be present 207 */ 208 if (dev->num_inst > 0) { 209 ret = s5p_mfc_load_firmware(dev); 210 if (ret) { 211 mfc_err("Failed to reload FW\n"); 212 goto unlock; 213 } 214 s5p_mfc_clock_on(); 215 ret = s5p_mfc_init_hw(dev); 216 s5p_mfc_clock_off(); 217 if (ret) 218 mfc_err("Failed to reinit FW\n"); 219 } 220 unlock: 221 if (mutex_locked) 222 mutex_unlock(&dev->mfc_mutex); 223 } 224 225 static void s5p_mfc_handle_frame_all_extracted(struct s5p_mfc_ctx *ctx) 226 { 227 struct s5p_mfc_buf *dst_buf; 228 struct s5p_mfc_dev *dev = ctx->dev; 229 230 ctx->state = MFCINST_FINISHED; 231 ctx->sequence++; 232 while (!list_empty(&ctx->dst_queue)) { 233 dst_buf = list_entry(ctx->dst_queue.next, 234 struct s5p_mfc_buf, list); 235 mfc_debug(2, "Cleaning up buffer: %d\n", 236 dst_buf->b->vb2_buf.index); 237 vb2_set_plane_payload(&dst_buf->b->vb2_buf, 0, 0); 238 vb2_set_plane_payload(&dst_buf->b->vb2_buf, 1, 0); 239 list_del(&dst_buf->list); 240 dst_buf->flags |= MFC_BUF_FLAG_EOS; 241 ctx->dst_queue_cnt--; 242 dst_buf->b->sequence = (ctx->sequence++); 243 244 if (s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_top, ctx) == 245 s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_bot, ctx)) 246 dst_buf->b->field = V4L2_FIELD_NONE; 247 else 248 dst_buf->b->field = V4L2_FIELD_INTERLACED; 249 dst_buf->b->flags |= V4L2_BUF_FLAG_LAST; 250 251 ctx->dec_dst_flag &= ~(1 << dst_buf->b->vb2_buf.index); 252 vb2_buffer_done(&dst_buf->b->vb2_buf, VB2_BUF_STATE_DONE); 253 } 254 } 255 256 static void s5p_mfc_handle_frame_copy_time(struct s5p_mfc_ctx *ctx) 257 { 258 struct s5p_mfc_dev *dev = ctx->dev; 259 struct s5p_mfc_buf *dst_buf, *src_buf; 260 u32 dec_y_addr; 261 unsigned int frame_type; 262 263 /* Make sure we actually have a new frame before continuing. */ 264 frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_dec_frame_type, dev); 265 if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) 266 return; 267 dec_y_addr = (u32)s5p_mfc_hw_call(dev->mfc_ops, get_dec_y_adr, dev); 268 269 /* 270 * Copy timestamp / timecode from decoded src to dst and set 271 * appropriate flags. 272 */ 273 src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list); 274 list_for_each_entry(dst_buf, &ctx->dst_queue, list) { 275 u32 addr = (u32)vb2_dma_contig_plane_dma_addr(&dst_buf->b->vb2_buf, 0); 276 277 if (addr == dec_y_addr) { 278 dst_buf->b->timecode = src_buf->b->timecode; 279 dst_buf->b->vb2_buf.timestamp = 280 src_buf->b->vb2_buf.timestamp; 281 dst_buf->b->flags &= 282 ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK; 283 dst_buf->b->flags |= 284 src_buf->b->flags 285 & V4L2_BUF_FLAG_TSTAMP_SRC_MASK; 286 switch (frame_type) { 287 case S5P_FIMV_DECODE_FRAME_I_FRAME: 288 dst_buf->b->flags |= 289 V4L2_BUF_FLAG_KEYFRAME; 290 break; 291 case S5P_FIMV_DECODE_FRAME_P_FRAME: 292 dst_buf->b->flags |= 293 V4L2_BUF_FLAG_PFRAME; 294 break; 295 case S5P_FIMV_DECODE_FRAME_B_FRAME: 296 dst_buf->b->flags |= 297 V4L2_BUF_FLAG_BFRAME; 298 break; 299 default: 300 /* 301 * Don't know how to handle 302 * S5P_FIMV_DECODE_FRAME_OTHER_FRAME. 303 */ 304 mfc_debug(2, "Unexpected frame type: %d\n", 305 frame_type); 306 } 307 break; 308 } 309 } 310 } 311 312 static void s5p_mfc_handle_frame_new(struct s5p_mfc_ctx *ctx, unsigned int err) 313 { 314 struct s5p_mfc_dev *dev = ctx->dev; 315 struct s5p_mfc_buf *dst_buf; 316 u32 dspl_y_addr; 317 unsigned int frame_type; 318 319 dspl_y_addr = (u32)s5p_mfc_hw_call(dev->mfc_ops, get_dspl_y_adr, dev); 320 if (IS_MFCV6_PLUS(dev)) 321 frame_type = s5p_mfc_hw_call(dev->mfc_ops, 322 get_disp_frame_type, ctx); 323 else 324 frame_type = s5p_mfc_hw_call(dev->mfc_ops, 325 get_dec_frame_type, dev); 326 327 /* If frame is same as previous then skip and do not dequeue */ 328 if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) { 329 if (!ctx->after_packed_pb) 330 ctx->sequence++; 331 ctx->after_packed_pb = 0; 332 return; 333 } 334 ctx->sequence++; 335 /* 336 * The MFC returns address of the buffer, now we have to 337 * check which vb2_buffer does it correspond to 338 */ 339 list_for_each_entry(dst_buf, &ctx->dst_queue, list) { 340 u32 addr = (u32)vb2_dma_contig_plane_dma_addr(&dst_buf->b->vb2_buf, 0); 341 342 /* Check if this is the buffer we're looking for */ 343 if (addr == dspl_y_addr) { 344 list_del(&dst_buf->list); 345 ctx->dst_queue_cnt--; 346 dst_buf->b->sequence = ctx->sequence; 347 if (s5p_mfc_hw_call(dev->mfc_ops, 348 get_pic_type_top, ctx) == 349 s5p_mfc_hw_call(dev->mfc_ops, 350 get_pic_type_bot, ctx)) 351 dst_buf->b->field = V4L2_FIELD_NONE; 352 else 353 dst_buf->b->field = 354 V4L2_FIELD_INTERLACED; 355 vb2_set_plane_payload(&dst_buf->b->vb2_buf, 0, 356 ctx->luma_size); 357 vb2_set_plane_payload(&dst_buf->b->vb2_buf, 1, 358 ctx->chroma_size); 359 clear_bit(dst_buf->b->vb2_buf.index, 360 &ctx->dec_dst_flag); 361 362 vb2_buffer_done(&dst_buf->b->vb2_buf, err ? 363 VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); 364 365 break; 366 } 367 } 368 } 369 370 /* Handle frame decoding interrupt */ 371 static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx, 372 unsigned int reason, unsigned int err) 373 { 374 struct s5p_mfc_dev *dev = ctx->dev; 375 unsigned int dst_frame_status; 376 unsigned int dec_frame_status; 377 struct s5p_mfc_buf *src_buf; 378 unsigned int res_change; 379 380 dst_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev) 381 & S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK; 382 dec_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dec_status, dev) 383 & S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK; 384 res_change = (s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev) 385 & S5P_FIMV_DEC_STATUS_RESOLUTION_MASK) 386 >> S5P_FIMV_DEC_STATUS_RESOLUTION_SHIFT; 387 mfc_debug(2, "Frame Status: %x\n", dst_frame_status); 388 if (ctx->state == MFCINST_RES_CHANGE_INIT) 389 ctx->state = MFCINST_RES_CHANGE_FLUSH; 390 if (res_change == S5P_FIMV_RES_INCREASE || 391 res_change == S5P_FIMV_RES_DECREASE) { 392 ctx->state = MFCINST_RES_CHANGE_INIT; 393 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 394 wake_up_ctx(ctx, reason, err); 395 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); 396 s5p_mfc_clock_off(); 397 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev); 398 return; 399 } 400 if (ctx->dpb_flush_flag) 401 ctx->dpb_flush_flag = 0; 402 403 /* All frames remaining in the buffer have been extracted */ 404 if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_EMPTY) { 405 if (ctx->state == MFCINST_RES_CHANGE_FLUSH) { 406 static const struct v4l2_event ev_src_ch = { 407 .type = V4L2_EVENT_SOURCE_CHANGE, 408 .u.src_change.changes = 409 V4L2_EVENT_SRC_CH_RESOLUTION, 410 }; 411 412 s5p_mfc_handle_frame_all_extracted(ctx); 413 ctx->state = MFCINST_RES_CHANGE_END; 414 v4l2_event_queue_fh(&ctx->fh, &ev_src_ch); 415 416 goto leave_handle_frame; 417 } else { 418 s5p_mfc_handle_frame_all_extracted(ctx); 419 } 420 } 421 422 if (dec_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY) 423 s5p_mfc_handle_frame_copy_time(ctx); 424 425 /* A frame has been decoded and is in the buffer */ 426 if (dst_frame_status == S5P_FIMV_DEC_STATUS_DISPLAY_ONLY || 427 dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY) { 428 s5p_mfc_handle_frame_new(ctx, err); 429 } else { 430 mfc_debug(2, "No frame decode\n"); 431 } 432 /* Mark source buffer as complete */ 433 if (dst_frame_status != S5P_FIMV_DEC_STATUS_DISPLAY_ONLY 434 && !list_empty(&ctx->src_queue)) { 435 src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, 436 list); 437 ctx->consumed_stream += s5p_mfc_hw_call(dev->mfc_ops, 438 get_consumed_stream, dev); 439 if (ctx->codec_mode != S5P_MFC_CODEC_H264_DEC && 440 ctx->codec_mode != S5P_MFC_CODEC_VP8_DEC && 441 ctx->consumed_stream + STUFF_BYTE < 442 src_buf->b->vb2_buf.planes[0].bytesused) { 443 /* Run MFC again on the same buffer */ 444 mfc_debug(2, "Running again the same buffer\n"); 445 ctx->after_packed_pb = 1; 446 } else { 447 mfc_debug(2, "MFC needs next buffer\n"); 448 ctx->consumed_stream = 0; 449 if (src_buf->flags & MFC_BUF_FLAG_EOS) 450 ctx->state = MFCINST_FINISHING; 451 list_del(&src_buf->list); 452 ctx->src_queue_cnt--; 453 if (s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) > 0) 454 vb2_buffer_done(&src_buf->b->vb2_buf, 455 VB2_BUF_STATE_ERROR); 456 else 457 vb2_buffer_done(&src_buf->b->vb2_buf, 458 VB2_BUF_STATE_DONE); 459 } 460 } 461 leave_handle_frame: 462 if ((ctx->src_queue_cnt == 0 && ctx->state != MFCINST_FINISHING) 463 || ctx->dst_queue_cnt < ctx->pb_count) 464 clear_work_bit(ctx); 465 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 466 wake_up_ctx(ctx, reason, err); 467 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); 468 s5p_mfc_clock_off(); 469 /* if suspending, wake up device and do not try_run again*/ 470 if (test_bit(0, &dev->enter_suspend)) 471 wake_up_dev(dev, reason, err); 472 else 473 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev); 474 } 475 476 /* Error handling for interrupt */ 477 static void s5p_mfc_handle_error(struct s5p_mfc_dev *dev, 478 struct s5p_mfc_ctx *ctx, unsigned int reason, unsigned int err) 479 { 480 mfc_err("Interrupt Error: %08x\n", err); 481 482 if (ctx) { 483 /* Error recovery is dependent on the state of context */ 484 switch (ctx->state) { 485 case MFCINST_RES_CHANGE_INIT: 486 case MFCINST_RES_CHANGE_FLUSH: 487 case MFCINST_RES_CHANGE_END: 488 case MFCINST_FINISHING: 489 case MFCINST_FINISHED: 490 case MFCINST_RUNNING: 491 /* 492 * It is highly probable that an error occurred 493 * while decoding a frame 494 */ 495 clear_work_bit(ctx); 496 ctx->state = MFCINST_ERROR; 497 /* Mark all dst buffers as having an error */ 498 s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst); 499 /* Mark all src buffers as having an error */ 500 s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src); 501 wake_up_ctx(ctx, reason, err); 502 break; 503 default: 504 clear_work_bit(ctx); 505 ctx->state = MFCINST_ERROR; 506 wake_up_ctx(ctx, reason, err); 507 break; 508 } 509 } 510 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); 511 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 512 s5p_mfc_clock_off(); 513 wake_up_dev(dev, reason, err); 514 } 515 516 /* Header parsing interrupt handling */ 517 static void s5p_mfc_handle_seq_done(struct s5p_mfc_ctx *ctx, 518 unsigned int reason, unsigned int err) 519 { 520 struct s5p_mfc_dev *dev; 521 522 if (!ctx) 523 return; 524 dev = ctx->dev; 525 if (ctx->c_ops->post_seq_start) { 526 if (ctx->c_ops->post_seq_start(ctx)) 527 mfc_err("post_seq_start() failed\n"); 528 } else { 529 ctx->img_width = s5p_mfc_hw_call(dev->mfc_ops, get_img_width, 530 dev); 531 ctx->img_height = s5p_mfc_hw_call(dev->mfc_ops, get_img_height, 532 dev); 533 534 s5p_mfc_hw_call(dev->mfc_ops, dec_calc_dpb_size, ctx); 535 536 ctx->pb_count = s5p_mfc_hw_call(dev->mfc_ops, get_dpb_count, 537 dev); 538 ctx->mv_count = s5p_mfc_hw_call(dev->mfc_ops, get_mv_count, 539 dev); 540 if (FW_HAS_E_MIN_SCRATCH_BUF(dev)) 541 ctx->scratch_buf_size = s5p_mfc_hw_call(dev->mfc_ops, 542 get_min_scratch_buf_size, dev); 543 if (ctx->img_width == 0 || ctx->img_height == 0) 544 ctx->state = MFCINST_ERROR; 545 else 546 ctx->state = MFCINST_HEAD_PARSED; 547 548 if ((ctx->codec_mode == S5P_MFC_CODEC_H264_DEC || 549 ctx->codec_mode == S5P_MFC_CODEC_H264_MVC_DEC) && 550 !list_empty(&ctx->src_queue)) { 551 struct s5p_mfc_buf *src_buf; 552 553 src_buf = list_entry(ctx->src_queue.next, 554 struct s5p_mfc_buf, list); 555 if (s5p_mfc_hw_call(dev->mfc_ops, get_consumed_stream, 556 dev) < 557 src_buf->b->vb2_buf.planes[0].bytesused) 558 ctx->head_processed = 0; 559 else 560 ctx->head_processed = 1; 561 } else { 562 ctx->head_processed = 1; 563 } 564 } 565 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 566 clear_work_bit(ctx); 567 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); 568 s5p_mfc_clock_off(); 569 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev); 570 wake_up_ctx(ctx, reason, err); 571 } 572 573 /* Header parsing interrupt handling */ 574 static void s5p_mfc_handle_init_buffers(struct s5p_mfc_ctx *ctx, 575 unsigned int reason, unsigned int err) 576 { 577 struct s5p_mfc_buf *src_buf; 578 struct s5p_mfc_dev *dev; 579 580 if (!ctx) 581 return; 582 dev = ctx->dev; 583 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 584 ctx->int_type = reason; 585 ctx->int_err = err; 586 ctx->int_cond = 1; 587 clear_work_bit(ctx); 588 if (err == 0) { 589 ctx->state = MFCINST_RUNNING; 590 if (!ctx->dpb_flush_flag && ctx->head_processed) { 591 if (!list_empty(&ctx->src_queue)) { 592 src_buf = list_entry(ctx->src_queue.next, 593 struct s5p_mfc_buf, list); 594 list_del(&src_buf->list); 595 ctx->src_queue_cnt--; 596 vb2_buffer_done(&src_buf->b->vb2_buf, 597 VB2_BUF_STATE_DONE); 598 } 599 } else { 600 ctx->dpb_flush_flag = 0; 601 } 602 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); 603 604 s5p_mfc_clock_off(); 605 606 wake_up(&ctx->queue); 607 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev); 608 } else { 609 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); 610 611 s5p_mfc_clock_off(); 612 613 wake_up(&ctx->queue); 614 } 615 } 616 617 static void s5p_mfc_handle_stream_complete(struct s5p_mfc_ctx *ctx) 618 { 619 struct s5p_mfc_dev *dev = ctx->dev; 620 struct s5p_mfc_buf *mb_entry; 621 622 mfc_debug(2, "Stream completed\n"); 623 624 ctx->state = MFCINST_FINISHED; 625 626 if (!list_empty(&ctx->dst_queue)) { 627 mb_entry = list_entry(ctx->dst_queue.next, struct s5p_mfc_buf, 628 list); 629 list_del(&mb_entry->list); 630 ctx->dst_queue_cnt--; 631 vb2_set_plane_payload(&mb_entry->b->vb2_buf, 0, 0); 632 vb2_buffer_done(&mb_entry->b->vb2_buf, VB2_BUF_STATE_DONE); 633 } 634 635 clear_work_bit(ctx); 636 637 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); 638 639 s5p_mfc_clock_off(); 640 wake_up(&ctx->queue); 641 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev); 642 } 643 644 /* Interrupt processing */ 645 static irqreturn_t s5p_mfc_irq(int irq, void *priv) 646 { 647 struct s5p_mfc_dev *dev = priv; 648 struct s5p_mfc_ctx *ctx; 649 unsigned int reason; 650 unsigned int err; 651 652 mfc_debug_enter(); 653 /* Reset the timeout watchdog */ 654 atomic_set(&dev->watchdog_cnt, 0); 655 spin_lock(&dev->irqlock); 656 ctx = dev->ctx[dev->curr_ctx]; 657 /* Get the reason of interrupt and the error code */ 658 reason = s5p_mfc_hw_call(dev->mfc_ops, get_int_reason, dev); 659 err = s5p_mfc_hw_call(dev->mfc_ops, get_int_err, dev); 660 mfc_debug(1, "Int reason: %d (err: %08x)\n", reason, err); 661 switch (reason) { 662 case S5P_MFC_R2H_CMD_ERR_RET: 663 /* An error has occurred */ 664 if (ctx->state == MFCINST_RUNNING && 665 (s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) >= 666 dev->warn_start || 667 err == S5P_FIMV_ERR_NO_VALID_SEQ_HDR || 668 err == S5P_FIMV_ERR_INCOMPLETE_FRAME || 669 err == S5P_FIMV_ERR_TIMEOUT)) 670 s5p_mfc_handle_frame(ctx, reason, err); 671 else 672 s5p_mfc_handle_error(dev, ctx, reason, err); 673 clear_bit(0, &dev->enter_suspend); 674 break; 675 676 case S5P_MFC_R2H_CMD_SLICE_DONE_RET: 677 case S5P_MFC_R2H_CMD_FIELD_DONE_RET: 678 case S5P_MFC_R2H_CMD_FRAME_DONE_RET: 679 if (ctx->c_ops->post_frame_start) { 680 if (ctx->c_ops->post_frame_start(ctx)) 681 mfc_err("post_frame_start() failed\n"); 682 683 if (ctx->state == MFCINST_FINISHING && 684 list_empty(&ctx->ref_queue)) { 685 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 686 s5p_mfc_handle_stream_complete(ctx); 687 break; 688 } 689 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 690 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); 691 s5p_mfc_clock_off(); 692 wake_up_ctx(ctx, reason, err); 693 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev); 694 } else { 695 s5p_mfc_handle_frame(ctx, reason, err); 696 } 697 break; 698 699 case S5P_MFC_R2H_CMD_SEQ_DONE_RET: 700 s5p_mfc_handle_seq_done(ctx, reason, err); 701 break; 702 703 case S5P_MFC_R2H_CMD_OPEN_INSTANCE_RET: 704 ctx->inst_no = s5p_mfc_hw_call(dev->mfc_ops, get_inst_no, dev); 705 ctx->state = MFCINST_GOT_INST; 706 goto irq_cleanup_hw; 707 708 case S5P_MFC_R2H_CMD_CLOSE_INSTANCE_RET: 709 ctx->inst_no = MFC_NO_INSTANCE_SET; 710 ctx->state = MFCINST_FREE; 711 goto irq_cleanup_hw; 712 713 case S5P_MFC_R2H_CMD_SYS_INIT_RET: 714 case S5P_MFC_R2H_CMD_FW_STATUS_RET: 715 case S5P_MFC_R2H_CMD_SLEEP_RET: 716 case S5P_MFC_R2H_CMD_WAKEUP_RET: 717 if (ctx) 718 clear_work_bit(ctx); 719 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 720 clear_bit(0, &dev->hw_lock); 721 clear_bit(0, &dev->enter_suspend); 722 wake_up_dev(dev, reason, err); 723 break; 724 725 case S5P_MFC_R2H_CMD_INIT_BUFFERS_RET: 726 s5p_mfc_handle_init_buffers(ctx, reason, err); 727 break; 728 729 case S5P_MFC_R2H_CMD_COMPLETE_SEQ_RET: 730 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 731 ctx->int_type = reason; 732 ctx->int_err = err; 733 s5p_mfc_handle_stream_complete(ctx); 734 break; 735 736 case S5P_MFC_R2H_CMD_DPB_FLUSH_RET: 737 ctx->state = MFCINST_RUNNING; 738 goto irq_cleanup_hw; 739 740 default: 741 mfc_debug(2, "Unknown int reason\n"); 742 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 743 } 744 spin_unlock(&dev->irqlock); 745 mfc_debug_leave(); 746 return IRQ_HANDLED; 747 irq_cleanup_hw: 748 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev); 749 ctx->int_type = reason; 750 ctx->int_err = err; 751 ctx->int_cond = 1; 752 if (test_and_clear_bit(0, &dev->hw_lock) == 0) 753 mfc_err("Failed to unlock hw\n"); 754 755 s5p_mfc_clock_off(); 756 clear_work_bit(ctx); 757 wake_up(&ctx->queue); 758 759 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev); 760 spin_unlock(&dev->irqlock); 761 mfc_debug(2, "Exit via irq_cleanup_hw\n"); 762 return IRQ_HANDLED; 763 } 764 765 /* Open an MFC node */ 766 static int s5p_mfc_open(struct file *file) 767 { 768 struct video_device *vdev = video_devdata(file); 769 struct s5p_mfc_dev *dev = video_drvdata(file); 770 struct s5p_mfc_ctx *ctx = NULL; 771 struct vb2_queue *q; 772 int ret = 0; 773 774 mfc_debug_enter(); 775 if (mutex_lock_interruptible(&dev->mfc_mutex)) 776 return -ERESTARTSYS; 777 dev->num_inst++; /* It is guarded by mfc_mutex in vfd */ 778 /* Allocate memory for context */ 779 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 780 if (!ctx) { 781 ret = -ENOMEM; 782 goto err_alloc; 783 } 784 init_waitqueue_head(&ctx->queue); 785 v4l2_fh_init(&ctx->fh, vdev); 786 file->private_data = &ctx->fh; 787 v4l2_fh_add(&ctx->fh); 788 ctx->dev = dev; 789 INIT_LIST_HEAD(&ctx->src_queue); 790 INIT_LIST_HEAD(&ctx->dst_queue); 791 ctx->src_queue_cnt = 0; 792 ctx->dst_queue_cnt = 0; 793 /* Get context number */ 794 ctx->num = 0; 795 while (dev->ctx[ctx->num]) { 796 ctx->num++; 797 if (ctx->num >= MFC_NUM_CONTEXTS) { 798 mfc_debug(2, "Too many open contexts\n"); 799 ret = -EBUSY; 800 goto err_no_ctx; 801 } 802 } 803 /* Mark context as idle */ 804 clear_work_bit_irqsave(ctx); 805 dev->ctx[ctx->num] = ctx; 806 if (vdev == dev->vfd_dec) { 807 ctx->type = MFCINST_DECODER; 808 ctx->c_ops = get_dec_codec_ops(); 809 s5p_mfc_dec_init(ctx); 810 /* Setup ctrl handler */ 811 ret = s5p_mfc_dec_ctrls_setup(ctx); 812 if (ret) { 813 mfc_err("Failed to setup mfc controls\n"); 814 goto err_ctrls_setup; 815 } 816 } else if (vdev == dev->vfd_enc) { 817 ctx->type = MFCINST_ENCODER; 818 ctx->c_ops = get_enc_codec_ops(); 819 /* only for encoder */ 820 INIT_LIST_HEAD(&ctx->ref_queue); 821 ctx->ref_queue_cnt = 0; 822 s5p_mfc_enc_init(ctx); 823 /* Setup ctrl handler */ 824 ret = s5p_mfc_enc_ctrls_setup(ctx); 825 if (ret) { 826 mfc_err("Failed to setup mfc controls\n"); 827 goto err_ctrls_setup; 828 } 829 } else { 830 ret = -ENOENT; 831 goto err_bad_node; 832 } 833 ctx->fh.ctrl_handler = &ctx->ctrl_handler; 834 ctx->inst_no = MFC_NO_INSTANCE_SET; 835 /* Load firmware if this is the first instance */ 836 if (dev->num_inst == 1) { 837 dev->watchdog_timer.expires = jiffies + 838 msecs_to_jiffies(MFC_WATCHDOG_INTERVAL); 839 add_timer(&dev->watchdog_timer); 840 ret = s5p_mfc_power_on(); 841 if (ret < 0) { 842 mfc_err("power on failed\n"); 843 goto err_pwr_enable; 844 } 845 s5p_mfc_clock_on(); 846 ret = s5p_mfc_load_firmware(dev); 847 if (ret) { 848 s5p_mfc_clock_off(); 849 goto err_load_fw; 850 } 851 /* Init the FW */ 852 ret = s5p_mfc_init_hw(dev); 853 s5p_mfc_clock_off(); 854 if (ret) 855 goto err_init_hw; 856 } 857 /* Init videobuf2 queue for CAPTURE */ 858 q = &ctx->vq_dst; 859 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; 860 q->drv_priv = &ctx->fh; 861 q->lock = &dev->mfc_mutex; 862 if (vdev == dev->vfd_dec) { 863 q->io_modes = VB2_MMAP; 864 q->ops = get_dec_queue_ops(); 865 } else if (vdev == dev->vfd_enc) { 866 q->io_modes = VB2_MMAP | VB2_USERPTR; 867 q->ops = get_enc_queue_ops(); 868 } else { 869 ret = -ENOENT; 870 goto err_queue_init; 871 } 872 /* 873 * We'll do mostly sequential access, so sacrifice TLB efficiency for 874 * faster allocation. 875 */ 876 q->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES; 877 q->mem_ops = &vb2_dma_contig_memops; 878 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 879 ret = vb2_queue_init(q); 880 if (ret) { 881 mfc_err("Failed to initialize videobuf2 queue(capture)\n"); 882 goto err_queue_init; 883 } 884 /* Init videobuf2 queue for OUTPUT */ 885 q = &ctx->vq_src; 886 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; 887 q->drv_priv = &ctx->fh; 888 q->lock = &dev->mfc_mutex; 889 if (vdev == dev->vfd_dec) { 890 q->io_modes = VB2_MMAP; 891 q->ops = get_dec_queue_ops(); 892 } else if (vdev == dev->vfd_enc) { 893 q->io_modes = VB2_MMAP | VB2_USERPTR; 894 q->ops = get_enc_queue_ops(); 895 } else { 896 ret = -ENOENT; 897 goto err_queue_init; 898 } 899 /* One way to indicate end-of-stream for MFC is to set the 900 * bytesused == 0. However by default videobuf2 handles bytesused 901 * equal to 0 as a special case and changes its value to the size 902 * of the buffer. Set the allow_zero_bytesused flag so that videobuf2 903 * will keep the value of bytesused intact. 904 */ 905 q->allow_zero_bytesused = 1; 906 907 /* 908 * We'll do mostly sequential access, so sacrifice TLB efficiency for 909 * faster allocation. 910 */ 911 q->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES; 912 q->mem_ops = &vb2_dma_contig_memops; 913 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 914 ret = vb2_queue_init(q); 915 if (ret) { 916 mfc_err("Failed to initialize videobuf2 queue(output)\n"); 917 goto err_queue_init; 918 } 919 mutex_unlock(&dev->mfc_mutex); 920 mfc_debug_leave(); 921 return ret; 922 /* Deinit when failure occurred */ 923 err_queue_init: 924 if (dev->num_inst == 1) 925 s5p_mfc_deinit_hw(dev); 926 err_init_hw: 927 err_load_fw: 928 err_pwr_enable: 929 if (dev->num_inst == 1) { 930 if (s5p_mfc_power_off() < 0) 931 mfc_err("power off failed\n"); 932 del_timer_sync(&dev->watchdog_timer); 933 } 934 err_ctrls_setup: 935 s5p_mfc_dec_ctrls_delete(ctx); 936 err_bad_node: 937 dev->ctx[ctx->num] = NULL; 938 err_no_ctx: 939 v4l2_fh_del(&ctx->fh); 940 v4l2_fh_exit(&ctx->fh); 941 kfree(ctx); 942 err_alloc: 943 dev->num_inst--; 944 mutex_unlock(&dev->mfc_mutex); 945 mfc_debug_leave(); 946 return ret; 947 } 948 949 /* Release MFC context */ 950 static int s5p_mfc_release(struct file *file) 951 { 952 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data); 953 struct s5p_mfc_dev *dev = ctx->dev; 954 955 /* if dev is null, do cleanup that doesn't need dev */ 956 mfc_debug_enter(); 957 if (dev) 958 mutex_lock(&dev->mfc_mutex); 959 vb2_queue_release(&ctx->vq_src); 960 vb2_queue_release(&ctx->vq_dst); 961 if (dev) { 962 s5p_mfc_clock_on(); 963 964 /* Mark context as idle */ 965 clear_work_bit_irqsave(ctx); 966 /* 967 * If instance was initialised and not yet freed, 968 * return instance and free resources 969 */ 970 if (ctx->state != MFCINST_FREE && ctx->state != MFCINST_INIT) { 971 mfc_debug(2, "Has to free instance\n"); 972 s5p_mfc_close_mfc_inst(dev, ctx); 973 } 974 /* hardware locking scheme */ 975 if (dev->curr_ctx == ctx->num) 976 clear_bit(0, &dev->hw_lock); 977 dev->num_inst--; 978 if (dev->num_inst == 0) { 979 mfc_debug(2, "Last instance\n"); 980 s5p_mfc_deinit_hw(dev); 981 del_timer_sync(&dev->watchdog_timer); 982 s5p_mfc_clock_off(); 983 if (s5p_mfc_power_off() < 0) 984 mfc_err("Power off failed\n"); 985 } else { 986 mfc_debug(2, "Shutting down clock\n"); 987 s5p_mfc_clock_off(); 988 } 989 } 990 if (dev) 991 dev->ctx[ctx->num] = NULL; 992 s5p_mfc_dec_ctrls_delete(ctx); 993 v4l2_fh_del(&ctx->fh); 994 /* vdev is gone if dev is null */ 995 if (dev) 996 v4l2_fh_exit(&ctx->fh); 997 kfree(ctx); 998 mfc_debug_leave(); 999 if (dev) 1000 mutex_unlock(&dev->mfc_mutex); 1001 1002 return 0; 1003 } 1004 1005 /* Poll */ 1006 static __poll_t s5p_mfc_poll(struct file *file, 1007 struct poll_table_struct *wait) 1008 { 1009 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data); 1010 struct s5p_mfc_dev *dev = ctx->dev; 1011 struct vb2_queue *src_q, *dst_q; 1012 struct vb2_buffer *src_vb = NULL, *dst_vb = NULL; 1013 __poll_t rc = 0; 1014 unsigned long flags; 1015 1016 mutex_lock(&dev->mfc_mutex); 1017 src_q = &ctx->vq_src; 1018 dst_q = &ctx->vq_dst; 1019 /* 1020 * There has to be at least one buffer queued on each queued_list, which 1021 * means either in driver already or waiting for driver to claim it 1022 * and start processing. 1023 */ 1024 if ((!vb2_is_streaming(src_q) || list_empty(&src_q->queued_list)) && 1025 (!vb2_is_streaming(dst_q) || list_empty(&dst_q->queued_list))) { 1026 rc = EPOLLERR; 1027 goto end; 1028 } 1029 mutex_unlock(&dev->mfc_mutex); 1030 poll_wait(file, &ctx->fh.wait, wait); 1031 poll_wait(file, &src_q->done_wq, wait); 1032 poll_wait(file, &dst_q->done_wq, wait); 1033 mutex_lock(&dev->mfc_mutex); 1034 if (v4l2_event_pending(&ctx->fh)) 1035 rc |= EPOLLPRI; 1036 spin_lock_irqsave(&src_q->done_lock, flags); 1037 if (!list_empty(&src_q->done_list)) 1038 src_vb = list_first_entry(&src_q->done_list, struct vb2_buffer, 1039 done_entry); 1040 if (src_vb && (src_vb->state == VB2_BUF_STATE_DONE 1041 || src_vb->state == VB2_BUF_STATE_ERROR)) 1042 rc |= EPOLLOUT | EPOLLWRNORM; 1043 spin_unlock_irqrestore(&src_q->done_lock, flags); 1044 spin_lock_irqsave(&dst_q->done_lock, flags); 1045 if (!list_empty(&dst_q->done_list)) 1046 dst_vb = list_first_entry(&dst_q->done_list, struct vb2_buffer, 1047 done_entry); 1048 if (dst_vb && (dst_vb->state == VB2_BUF_STATE_DONE 1049 || dst_vb->state == VB2_BUF_STATE_ERROR)) 1050 rc |= EPOLLIN | EPOLLRDNORM; 1051 spin_unlock_irqrestore(&dst_q->done_lock, flags); 1052 end: 1053 mutex_unlock(&dev->mfc_mutex); 1054 return rc; 1055 } 1056 1057 /* Mmap */ 1058 static int s5p_mfc_mmap(struct file *file, struct vm_area_struct *vma) 1059 { 1060 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data); 1061 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; 1062 int ret; 1063 1064 if (offset < DST_QUEUE_OFF_BASE) { 1065 mfc_debug(2, "mmapping source\n"); 1066 ret = vb2_mmap(&ctx->vq_src, vma); 1067 } else { /* capture */ 1068 mfc_debug(2, "mmapping destination\n"); 1069 vma->vm_pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT); 1070 ret = vb2_mmap(&ctx->vq_dst, vma); 1071 } 1072 return ret; 1073 } 1074 1075 /* v4l2 ops */ 1076 static const struct v4l2_file_operations s5p_mfc_fops = { 1077 .owner = THIS_MODULE, 1078 .open = s5p_mfc_open, 1079 .release = s5p_mfc_release, 1080 .poll = s5p_mfc_poll, 1081 .unlocked_ioctl = video_ioctl2, 1082 .mmap = s5p_mfc_mmap, 1083 }; 1084 1085 /* DMA memory related helper functions */ 1086 static void s5p_mfc_memdev_release(struct device *dev) 1087 { 1088 of_reserved_mem_device_release(dev); 1089 } 1090 1091 static struct device *s5p_mfc_alloc_memdev(struct device *dev, 1092 const char *name, unsigned int idx) 1093 { 1094 struct device *child; 1095 int ret; 1096 1097 child = devm_kzalloc(dev, sizeof(*child), GFP_KERNEL); 1098 if (!child) 1099 return NULL; 1100 1101 device_initialize(child); 1102 dev_set_name(child, "%s:%s", dev_name(dev), name); 1103 child->parent = dev; 1104 child->coherent_dma_mask = dev->coherent_dma_mask; 1105 child->dma_mask = dev->dma_mask; 1106 child->release = s5p_mfc_memdev_release; 1107 child->dma_parms = devm_kzalloc(dev, sizeof(*child->dma_parms), 1108 GFP_KERNEL); 1109 if (!child->dma_parms) 1110 goto err; 1111 1112 /* 1113 * The memdevs are not proper OF platform devices, so in order for them 1114 * to be treated as valid DMA masters we need a bit of a hack to force 1115 * them to inherit the MFC node's DMA configuration. 1116 */ 1117 of_dma_configure(child, dev->of_node, true); 1118 1119 if (device_add(child) == 0) { 1120 ret = of_reserved_mem_device_init_by_idx(child, dev->of_node, 1121 idx); 1122 if (ret == 0) 1123 return child; 1124 device_del(child); 1125 } 1126 err: 1127 put_device(child); 1128 return NULL; 1129 } 1130 1131 static int s5p_mfc_configure_2port_memory(struct s5p_mfc_dev *mfc_dev) 1132 { 1133 struct device *dev = &mfc_dev->plat_dev->dev; 1134 void *bank2_virt; 1135 dma_addr_t bank2_dma_addr; 1136 unsigned long align_size = 1 << MFC_BASE_ALIGN_ORDER; 1137 int ret; 1138 1139 /* 1140 * Create and initialize virtual devices for accessing 1141 * reserved memory regions. 1142 */ 1143 mfc_dev->mem_dev[BANK_L_CTX] = s5p_mfc_alloc_memdev(dev, "left", 1144 BANK_L_CTX); 1145 if (!mfc_dev->mem_dev[BANK_L_CTX]) 1146 return -ENODEV; 1147 mfc_dev->mem_dev[BANK_R_CTX] = s5p_mfc_alloc_memdev(dev, "right", 1148 BANK_R_CTX); 1149 if (!mfc_dev->mem_dev[BANK_R_CTX]) { 1150 device_unregister(mfc_dev->mem_dev[BANK_L_CTX]); 1151 return -ENODEV; 1152 } 1153 1154 /* Allocate memory for firmware and initialize both banks addresses */ 1155 ret = s5p_mfc_alloc_firmware(mfc_dev); 1156 if (ret) { 1157 device_unregister(mfc_dev->mem_dev[BANK_R_CTX]); 1158 device_unregister(mfc_dev->mem_dev[BANK_L_CTX]); 1159 return ret; 1160 } 1161 1162 mfc_dev->dma_base[BANK_L_CTX] = mfc_dev->fw_buf.dma; 1163 1164 bank2_virt = dma_alloc_coherent(mfc_dev->mem_dev[BANK_R_CTX], 1165 align_size, &bank2_dma_addr, GFP_KERNEL); 1166 if (!bank2_virt) { 1167 s5p_mfc_release_firmware(mfc_dev); 1168 device_unregister(mfc_dev->mem_dev[BANK_R_CTX]); 1169 device_unregister(mfc_dev->mem_dev[BANK_L_CTX]); 1170 return -ENOMEM; 1171 } 1172 1173 /* Valid buffers passed to MFC encoder with LAST_FRAME command 1174 * should not have address of bank2 - MFC will treat it as a null frame. 1175 * To avoid such situation we set bank2 address below the pool address. 1176 */ 1177 mfc_dev->dma_base[BANK_R_CTX] = bank2_dma_addr - align_size; 1178 1179 dma_free_coherent(mfc_dev->mem_dev[BANK_R_CTX], align_size, bank2_virt, 1180 bank2_dma_addr); 1181 1182 vb2_dma_contig_set_max_seg_size(mfc_dev->mem_dev[BANK_L_CTX], 1183 DMA_BIT_MASK(32)); 1184 vb2_dma_contig_set_max_seg_size(mfc_dev->mem_dev[BANK_R_CTX], 1185 DMA_BIT_MASK(32)); 1186 1187 return 0; 1188 } 1189 1190 static void s5p_mfc_unconfigure_2port_memory(struct s5p_mfc_dev *mfc_dev) 1191 { 1192 device_unregister(mfc_dev->mem_dev[BANK_L_CTX]); 1193 device_unregister(mfc_dev->mem_dev[BANK_R_CTX]); 1194 vb2_dma_contig_clear_max_seg_size(mfc_dev->mem_dev[BANK_L_CTX]); 1195 vb2_dma_contig_clear_max_seg_size(mfc_dev->mem_dev[BANK_R_CTX]); 1196 } 1197 1198 static int s5p_mfc_configure_common_memory(struct s5p_mfc_dev *mfc_dev) 1199 { 1200 struct device *dev = &mfc_dev->plat_dev->dev; 1201 unsigned long mem_size = SZ_4M; 1202 1203 if (IS_ENABLED(CONFIG_DMA_CMA) || exynos_is_iommu_available(dev)) 1204 mem_size = SZ_8M; 1205 1206 if (mfc_mem_size) 1207 mem_size = memparse(mfc_mem_size, NULL); 1208 1209 mfc_dev->mem_bitmap = bitmap_zalloc(mem_size >> PAGE_SHIFT, GFP_KERNEL); 1210 if (!mfc_dev->mem_bitmap) 1211 return -ENOMEM; 1212 1213 mfc_dev->mem_virt = dma_alloc_coherent(dev, mem_size, 1214 &mfc_dev->mem_base, GFP_KERNEL); 1215 if (!mfc_dev->mem_virt) { 1216 bitmap_free(mfc_dev->mem_bitmap); 1217 dev_err(dev, "failed to preallocate %ld MiB for the firmware and context buffers\n", 1218 (mem_size / SZ_1M)); 1219 return -ENOMEM; 1220 } 1221 mfc_dev->mem_size = mem_size; 1222 mfc_dev->dma_base[BANK_L_CTX] = mfc_dev->mem_base; 1223 mfc_dev->dma_base[BANK_R_CTX] = mfc_dev->mem_base; 1224 1225 /* 1226 * MFC hardware cannot handle 0 as a base address, so mark first 128K 1227 * as used (to keep required base alignment) and adjust base address 1228 */ 1229 if (mfc_dev->mem_base == (dma_addr_t)0) { 1230 unsigned int offset = 1 << MFC_BASE_ALIGN_ORDER; 1231 1232 bitmap_set(mfc_dev->mem_bitmap, 0, offset >> PAGE_SHIFT); 1233 mfc_dev->dma_base[BANK_L_CTX] += offset; 1234 mfc_dev->dma_base[BANK_R_CTX] += offset; 1235 } 1236 1237 /* Firmware allocation cannot fail in this case */ 1238 s5p_mfc_alloc_firmware(mfc_dev); 1239 1240 mfc_dev->mem_dev[BANK_L_CTX] = mfc_dev->mem_dev[BANK_R_CTX] = dev; 1241 vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32)); 1242 1243 dev_info(dev, "preallocated %ld MiB buffer for the firmware and context buffers\n", 1244 (mem_size / SZ_1M)); 1245 1246 return 0; 1247 } 1248 1249 static void s5p_mfc_unconfigure_common_memory(struct s5p_mfc_dev *mfc_dev) 1250 { 1251 struct device *dev = &mfc_dev->plat_dev->dev; 1252 1253 dma_free_coherent(dev, mfc_dev->mem_size, mfc_dev->mem_virt, 1254 mfc_dev->mem_base); 1255 bitmap_free(mfc_dev->mem_bitmap); 1256 vb2_dma_contig_clear_max_seg_size(dev); 1257 } 1258 1259 static int s5p_mfc_configure_dma_memory(struct s5p_mfc_dev *mfc_dev) 1260 { 1261 struct device *dev = &mfc_dev->plat_dev->dev; 1262 1263 if (exynos_is_iommu_available(dev) || !IS_TWOPORT(mfc_dev)) 1264 return s5p_mfc_configure_common_memory(mfc_dev); 1265 else 1266 return s5p_mfc_configure_2port_memory(mfc_dev); 1267 } 1268 1269 static void s5p_mfc_unconfigure_dma_memory(struct s5p_mfc_dev *mfc_dev) 1270 { 1271 struct device *dev = &mfc_dev->plat_dev->dev; 1272 1273 s5p_mfc_release_firmware(mfc_dev); 1274 if (exynos_is_iommu_available(dev) || !IS_TWOPORT(mfc_dev)) 1275 s5p_mfc_unconfigure_common_memory(mfc_dev); 1276 else 1277 s5p_mfc_unconfigure_2port_memory(mfc_dev); 1278 } 1279 1280 /* MFC probe function */ 1281 static int s5p_mfc_probe(struct platform_device *pdev) 1282 { 1283 struct s5p_mfc_dev *dev; 1284 struct video_device *vfd; 1285 int ret; 1286 1287 pr_debug("%s++\n", __func__); 1288 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); 1289 if (!dev) 1290 return -ENOMEM; 1291 1292 spin_lock_init(&dev->irqlock); 1293 spin_lock_init(&dev->condlock); 1294 dev->plat_dev = pdev; 1295 if (!dev->plat_dev) { 1296 mfc_err("No platform data specified\n"); 1297 return -ENODEV; 1298 } 1299 1300 dev->variant = of_device_get_match_data(&pdev->dev); 1301 if (!dev->variant) { 1302 dev_err(&pdev->dev, "Failed to get device MFC hardware variant information\n"); 1303 return -ENOENT; 1304 } 1305 1306 dev->regs_base = devm_platform_ioremap_resource(pdev, 0); 1307 if (IS_ERR(dev->regs_base)) 1308 return PTR_ERR(dev->regs_base); 1309 1310 ret = platform_get_irq(pdev, 0); 1311 if (ret < 0) 1312 return ret; 1313 dev->irq = ret; 1314 ret = devm_request_irq(&pdev->dev, dev->irq, s5p_mfc_irq, 1315 0, pdev->name, dev); 1316 if (ret) { 1317 dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret); 1318 return ret; 1319 } 1320 1321 ret = s5p_mfc_configure_dma_memory(dev); 1322 if (ret < 0) { 1323 dev_err(&pdev->dev, "failed to configure DMA memory\n"); 1324 return ret; 1325 } 1326 1327 ret = s5p_mfc_init_pm(dev); 1328 if (ret < 0) { 1329 dev_err(&pdev->dev, "failed to get mfc clock source\n"); 1330 goto err_dma; 1331 } 1332 1333 /* 1334 * Load fails if fs isn't mounted. Try loading anyway. 1335 * _open() will load it, it fails now. Ignore failure. 1336 */ 1337 s5p_mfc_load_firmware(dev); 1338 1339 mutex_init(&dev->mfc_mutex); 1340 init_waitqueue_head(&dev->queue); 1341 dev->hw_lock = 0; 1342 INIT_WORK(&dev->watchdog_work, s5p_mfc_watchdog_worker); 1343 atomic_set(&dev->watchdog_cnt, 0); 1344 timer_setup(&dev->watchdog_timer, s5p_mfc_watchdog, 0); 1345 1346 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); 1347 if (ret) 1348 goto err_v4l2_dev_reg; 1349 1350 /* decoder */ 1351 vfd = video_device_alloc(); 1352 if (!vfd) { 1353 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); 1354 ret = -ENOMEM; 1355 goto err_dec_alloc; 1356 } 1357 vfd->fops = &s5p_mfc_fops; 1358 vfd->ioctl_ops = get_dec_v4l2_ioctl_ops(); 1359 vfd->release = video_device_release; 1360 vfd->lock = &dev->mfc_mutex; 1361 vfd->v4l2_dev = &dev->v4l2_dev; 1362 vfd->vfl_dir = VFL_DIR_M2M; 1363 vfd->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING; 1364 set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags); 1365 snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_DEC_NAME); 1366 dev->vfd_dec = vfd; 1367 video_set_drvdata(vfd, dev); 1368 1369 /* encoder */ 1370 vfd = video_device_alloc(); 1371 if (!vfd) { 1372 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); 1373 ret = -ENOMEM; 1374 goto err_enc_alloc; 1375 } 1376 vfd->fops = &s5p_mfc_fops; 1377 vfd->ioctl_ops = get_enc_v4l2_ioctl_ops(); 1378 vfd->release = video_device_release; 1379 vfd->lock = &dev->mfc_mutex; 1380 vfd->v4l2_dev = &dev->v4l2_dev; 1381 vfd->vfl_dir = VFL_DIR_M2M; 1382 vfd->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING; 1383 snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_ENC_NAME); 1384 dev->vfd_enc = vfd; 1385 video_set_drvdata(vfd, dev); 1386 platform_set_drvdata(pdev, dev); 1387 1388 /* Initialize HW ops and commands based on MFC version */ 1389 s5p_mfc_init_hw_ops(dev); 1390 s5p_mfc_init_hw_cmds(dev); 1391 s5p_mfc_init_regs(dev); 1392 1393 /* Register decoder and encoder */ 1394 ret = video_register_device(dev->vfd_dec, VFL_TYPE_VIDEO, 0); 1395 if (ret) { 1396 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); 1397 goto err_dec_reg; 1398 } 1399 v4l2_info(&dev->v4l2_dev, 1400 "decoder registered as /dev/video%d\n", dev->vfd_dec->num); 1401 1402 ret = video_register_device(dev->vfd_enc, VFL_TYPE_VIDEO, 0); 1403 if (ret) { 1404 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); 1405 goto err_enc_reg; 1406 } 1407 v4l2_info(&dev->v4l2_dev, 1408 "encoder registered as /dev/video%d\n", dev->vfd_enc->num); 1409 1410 pr_debug("%s--\n", __func__); 1411 return 0; 1412 1413 /* Deinit MFC if probe had failed */ 1414 err_enc_reg: 1415 video_unregister_device(dev->vfd_dec); 1416 dev->vfd_dec = NULL; 1417 err_dec_reg: 1418 video_device_release(dev->vfd_enc); 1419 err_enc_alloc: 1420 video_device_release(dev->vfd_dec); 1421 err_dec_alloc: 1422 v4l2_device_unregister(&dev->v4l2_dev); 1423 err_v4l2_dev_reg: 1424 s5p_mfc_final_pm(dev); 1425 err_dma: 1426 s5p_mfc_unconfigure_dma_memory(dev); 1427 1428 pr_debug("%s-- with error\n", __func__); 1429 return ret; 1430 1431 } 1432 1433 /* Remove the driver */ 1434 static int s5p_mfc_remove(struct platform_device *pdev) 1435 { 1436 struct s5p_mfc_dev *dev = platform_get_drvdata(pdev); 1437 struct s5p_mfc_ctx *ctx; 1438 int i; 1439 1440 v4l2_info(&dev->v4l2_dev, "Removing %s\n", pdev->name); 1441 1442 /* 1443 * Clear ctx dev pointer to avoid races between s5p_mfc_remove() 1444 * and s5p_mfc_release() and s5p_mfc_release() accessing ctx->dev 1445 * after s5p_mfc_remove() is run during unbind. 1446 */ 1447 mutex_lock(&dev->mfc_mutex); 1448 for (i = 0; i < MFC_NUM_CONTEXTS; i++) { 1449 ctx = dev->ctx[i]; 1450 if (!ctx) 1451 continue; 1452 /* clear ctx->dev */ 1453 ctx->dev = NULL; 1454 } 1455 mutex_unlock(&dev->mfc_mutex); 1456 1457 del_timer_sync(&dev->watchdog_timer); 1458 flush_work(&dev->watchdog_work); 1459 1460 video_unregister_device(dev->vfd_enc); 1461 video_unregister_device(dev->vfd_dec); 1462 v4l2_device_unregister(&dev->v4l2_dev); 1463 s5p_mfc_unconfigure_dma_memory(dev); 1464 1465 s5p_mfc_final_pm(dev); 1466 return 0; 1467 } 1468 1469 #ifdef CONFIG_PM_SLEEP 1470 1471 static int s5p_mfc_suspend(struct device *dev) 1472 { 1473 struct s5p_mfc_dev *m_dev = dev_get_drvdata(dev); 1474 int ret; 1475 1476 if (m_dev->num_inst == 0) 1477 return 0; 1478 1479 if (test_and_set_bit(0, &m_dev->enter_suspend) != 0) { 1480 mfc_err("Error: going to suspend for a second time\n"); 1481 return -EIO; 1482 } 1483 1484 /* Check if we're processing then wait if it necessary. */ 1485 while (test_and_set_bit(0, &m_dev->hw_lock) != 0) { 1486 /* Try and lock the HW */ 1487 /* Wait on the interrupt waitqueue */ 1488 ret = wait_event_interruptible_timeout(m_dev->queue, 1489 m_dev->int_cond, msecs_to_jiffies(MFC_INT_TIMEOUT)); 1490 if (ret == 0) { 1491 mfc_err("Waiting for hardware to finish timed out\n"); 1492 clear_bit(0, &m_dev->enter_suspend); 1493 return -EIO; 1494 } 1495 } 1496 1497 ret = s5p_mfc_sleep(m_dev); 1498 if (ret) { 1499 clear_bit(0, &m_dev->enter_suspend); 1500 clear_bit(0, &m_dev->hw_lock); 1501 } 1502 return ret; 1503 } 1504 1505 static int s5p_mfc_resume(struct device *dev) 1506 { 1507 struct s5p_mfc_dev *m_dev = dev_get_drvdata(dev); 1508 1509 if (m_dev->num_inst == 0) 1510 return 0; 1511 return s5p_mfc_wakeup(m_dev); 1512 } 1513 #endif 1514 1515 /* Power management */ 1516 static const struct dev_pm_ops s5p_mfc_pm_ops = { 1517 SET_SYSTEM_SLEEP_PM_OPS(s5p_mfc_suspend, s5p_mfc_resume) 1518 }; 1519 1520 static struct s5p_mfc_buf_size_v5 mfc_buf_size_v5 = { 1521 .h264_ctx = MFC_H264_CTX_BUF_SIZE, 1522 .non_h264_ctx = MFC_CTX_BUF_SIZE, 1523 .dsc = DESC_BUF_SIZE, 1524 .shm = SHARED_BUF_SIZE, 1525 }; 1526 1527 static struct s5p_mfc_buf_size buf_size_v5 = { 1528 .fw = MAX_FW_SIZE, 1529 .cpb = MAX_CPB_SIZE, 1530 .priv = &mfc_buf_size_v5, 1531 }; 1532 1533 static struct s5p_mfc_variant mfc_drvdata_v5 = { 1534 .version = MFC_VERSION, 1535 .version_bit = MFC_V5_BIT, 1536 .port_num = MFC_NUM_PORTS, 1537 .buf_size = &buf_size_v5, 1538 .fw_name[0] = "s5p-mfc.fw", 1539 .clk_names = {"mfc", "sclk_mfc"}, 1540 .num_clocks = 2, 1541 .use_clock_gating = true, 1542 }; 1543 1544 static struct s5p_mfc_buf_size_v6 mfc_buf_size_v6 = { 1545 .dev_ctx = MFC_CTX_BUF_SIZE_V6, 1546 .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V6, 1547 .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V6, 1548 .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V6, 1549 .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V6, 1550 }; 1551 1552 static struct s5p_mfc_buf_size buf_size_v6 = { 1553 .fw = MAX_FW_SIZE_V6, 1554 .cpb = MAX_CPB_SIZE_V6, 1555 .priv = &mfc_buf_size_v6, 1556 }; 1557 1558 static struct s5p_mfc_variant mfc_drvdata_v6 = { 1559 .version = MFC_VERSION_V6, 1560 .version_bit = MFC_V6_BIT, 1561 .port_num = MFC_NUM_PORTS_V6, 1562 .buf_size = &buf_size_v6, 1563 .fw_name[0] = "s5p-mfc-v6.fw", 1564 /* 1565 * v6-v2 firmware contains bug fixes and interface change 1566 * for init buffer command 1567 */ 1568 .fw_name[1] = "s5p-mfc-v6-v2.fw", 1569 .clk_names = {"mfc"}, 1570 .num_clocks = 1, 1571 }; 1572 1573 static struct s5p_mfc_buf_size_v6 mfc_buf_size_v7 = { 1574 .dev_ctx = MFC_CTX_BUF_SIZE_V7, 1575 .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V7, 1576 .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V7, 1577 .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V7, 1578 .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V7, 1579 }; 1580 1581 static struct s5p_mfc_buf_size buf_size_v7 = { 1582 .fw = MAX_FW_SIZE_V7, 1583 .cpb = MAX_CPB_SIZE_V7, 1584 .priv = &mfc_buf_size_v7, 1585 }; 1586 1587 static struct s5p_mfc_variant mfc_drvdata_v7 = { 1588 .version = MFC_VERSION_V7, 1589 .version_bit = MFC_V7_BIT, 1590 .port_num = MFC_NUM_PORTS_V7, 1591 .buf_size = &buf_size_v7, 1592 .fw_name[0] = "s5p-mfc-v7.fw", 1593 .clk_names = {"mfc"}, 1594 .num_clocks = 1, 1595 }; 1596 1597 static struct s5p_mfc_variant mfc_drvdata_v7_3250 = { 1598 .version = MFC_VERSION_V7, 1599 .version_bit = MFC_V7_BIT, 1600 .port_num = MFC_NUM_PORTS_V7, 1601 .buf_size = &buf_size_v7, 1602 .fw_name[0] = "s5p-mfc-v7.fw", 1603 .clk_names = {"mfc", "sclk_mfc"}, 1604 .num_clocks = 2, 1605 }; 1606 1607 static struct s5p_mfc_buf_size_v6 mfc_buf_size_v8 = { 1608 .dev_ctx = MFC_CTX_BUF_SIZE_V8, 1609 .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V8, 1610 .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V8, 1611 .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V8, 1612 .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V8, 1613 }; 1614 1615 static struct s5p_mfc_buf_size buf_size_v8 = { 1616 .fw = MAX_FW_SIZE_V8, 1617 .cpb = MAX_CPB_SIZE_V8, 1618 .priv = &mfc_buf_size_v8, 1619 }; 1620 1621 static struct s5p_mfc_variant mfc_drvdata_v8 = { 1622 .version = MFC_VERSION_V8, 1623 .version_bit = MFC_V8_BIT, 1624 .port_num = MFC_NUM_PORTS_V8, 1625 .buf_size = &buf_size_v8, 1626 .fw_name[0] = "s5p-mfc-v8.fw", 1627 .clk_names = {"mfc"}, 1628 .num_clocks = 1, 1629 }; 1630 1631 static struct s5p_mfc_variant mfc_drvdata_v8_5433 = { 1632 .version = MFC_VERSION_V8, 1633 .version_bit = MFC_V8_BIT, 1634 .port_num = MFC_NUM_PORTS_V8, 1635 .buf_size = &buf_size_v8, 1636 .fw_name[0] = "s5p-mfc-v8.fw", 1637 .clk_names = {"pclk", "aclk", "aclk_xiu"}, 1638 .num_clocks = 3, 1639 }; 1640 1641 static struct s5p_mfc_buf_size_v6 mfc_buf_size_v10 = { 1642 .dev_ctx = MFC_CTX_BUF_SIZE_V10, 1643 .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V10, 1644 .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V10, 1645 .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V10, 1646 .hevc_enc_ctx = MFC_HEVC_ENC_CTX_BUF_SIZE_V10, 1647 .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V10, 1648 }; 1649 1650 static struct s5p_mfc_buf_size buf_size_v10 = { 1651 .fw = MAX_FW_SIZE_V10, 1652 .cpb = MAX_CPB_SIZE_V10, 1653 .priv = &mfc_buf_size_v10, 1654 }; 1655 1656 static struct s5p_mfc_variant mfc_drvdata_v10 = { 1657 .version = MFC_VERSION_V10, 1658 .version_bit = MFC_V10_BIT, 1659 .port_num = MFC_NUM_PORTS_V10, 1660 .buf_size = &buf_size_v10, 1661 .fw_name[0] = "s5p-mfc-v10.fw", 1662 }; 1663 1664 static const struct of_device_id exynos_mfc_match[] = { 1665 { 1666 .compatible = "samsung,mfc-v5", 1667 .data = &mfc_drvdata_v5, 1668 }, { 1669 .compatible = "samsung,mfc-v6", 1670 .data = &mfc_drvdata_v6, 1671 }, { 1672 .compatible = "samsung,mfc-v7", 1673 .data = &mfc_drvdata_v7, 1674 }, { 1675 .compatible = "samsung,exynos3250-mfc", 1676 .data = &mfc_drvdata_v7_3250, 1677 }, { 1678 .compatible = "samsung,mfc-v8", 1679 .data = &mfc_drvdata_v8, 1680 }, { 1681 .compatible = "samsung,exynos5433-mfc", 1682 .data = &mfc_drvdata_v8_5433, 1683 }, { 1684 .compatible = "samsung,mfc-v10", 1685 .data = &mfc_drvdata_v10, 1686 }, 1687 {}, 1688 }; 1689 MODULE_DEVICE_TABLE(of, exynos_mfc_match); 1690 1691 static struct platform_driver s5p_mfc_driver = { 1692 .probe = s5p_mfc_probe, 1693 .remove = s5p_mfc_remove, 1694 .driver = { 1695 .name = S5P_MFC_NAME, 1696 .pm = &s5p_mfc_pm_ops, 1697 .of_match_table = exynos_mfc_match, 1698 }, 1699 }; 1700 1701 module_platform_driver(s5p_mfc_driver); 1702 1703 MODULE_LICENSE("GPL"); 1704 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>"); 1705 MODULE_DESCRIPTION("Samsung S5P Multi Format Codec V4L2 driver"); 1706 1707