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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / media / platform / s5p-mfc / s5p_mfc.c
blobd5b94fc0040e4f8081cf99de46367504780ed3d4
1 /*
2 * Samsung S5P Multi Format Codec v 5.1
3 *
4 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
5 * Kamil Debski, <k.debski@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 */
12
13 #include <linux/clk.h>
14 #include <linux/delay.h>
15 #include <linux/interrupt.h>
16 #include <linux/io.h>
17 #include <linux/module.h>
18 #include <linux/platform_device.h>
19 #include <linux/sched.h>
20 #include <linux/slab.h>
21 #include <linux/videodev2.h>
22 #include <media/v4l2-event.h>
23 #include <linux/workqueue.h>
24 #include <linux/of.h>
25 #include <linux/of_device.h>
26 #include <linux/of_reserved_mem.h>
27 #include <media/videobuf2-v4l2.h>
28 #include "s5p_mfc_common.h"
29 #include "s5p_mfc_ctrl.h"
30 #include "s5p_mfc_debug.h"
31 #include "s5p_mfc_dec.h"
32 #include "s5p_mfc_enc.h"
33 #include "s5p_mfc_intr.h"
34 #include "s5p_mfc_iommu.h"
35 #include "s5p_mfc_opr.h"
36 #include "s5p_mfc_cmd.h"
37 #include "s5p_mfc_pm.h"
38
39 #define S5P_MFC_DEC_NAME "s5p-mfc-dec"
40 #define S5P_MFC_ENC_NAME "s5p-mfc-enc"
41
42 int mfc_debug_level;
43 module_param_named(debug, mfc_debug_level, int, S_IRUGO | S_IWUSR);
44 MODULE_PARM_DESC(debug, "Debug level - higher value produces more verbose messages");
45
46 static char *mfc_mem_size;
47 module_param_named(mem, mfc_mem_size, charp, 0644);
48 MODULE_PARM_DESC(mem, "Preallocated memory size for the firmware and context buffers");
49
50 /* Helper functions for interrupt processing */
51
52 /* Remove from hw execution round robin */
53 void clear_work_bit(struct s5p_mfc_ctx *ctx)
54 {
55 struct s5p_mfc_dev *dev = ctx->dev;
56
57 spin_lock(&dev->condlock);
58 __clear_bit(ctx->num, &dev->ctx_work_bits);
59 spin_unlock(&dev->condlock);
60 }
61
62 /* Add to hw execution round robin */
63 void set_work_bit(struct s5p_mfc_ctx *ctx)
64 {
65 struct s5p_mfc_dev *dev = ctx->dev;
66
67 spin_lock(&dev->condlock);
68 __set_bit(ctx->num, &dev->ctx_work_bits);
69 spin_unlock(&dev->condlock);
70 }
71
72 /* Remove from hw execution round robin */
73 void clear_work_bit_irqsave(struct s5p_mfc_ctx *ctx)
74 {
75 struct s5p_mfc_dev *dev = ctx->dev;
76 unsigned long flags;
77
78 spin_lock_irqsave(&dev->condlock, flags);
79 __clear_bit(ctx->num, &dev->ctx_work_bits);
80 spin_unlock_irqrestore(&dev->condlock, flags);
81 }
82
83 /* Add to hw execution round robin */
84 void set_work_bit_irqsave(struct s5p_mfc_ctx *ctx)
85 {
86 struct s5p_mfc_dev *dev = ctx->dev;
87 unsigned long flags;
88
89 spin_lock_irqsave(&dev->condlock, flags);
90 __set_bit(ctx->num, &dev->ctx_work_bits);
91 spin_unlock_irqrestore(&dev->condlock, flags);
92 }
93
94 int s5p_mfc_get_new_ctx(struct s5p_mfc_dev *dev)
95 {
96 unsigned long flags;
97 int ctx;
98
99 spin_lock_irqsave(&dev->condlock, flags);
100 ctx = dev->curr_ctx;
101 do {
102 ctx = (ctx + 1) % MFC_NUM_CONTEXTS;
103 if (ctx == dev->curr_ctx) {
104 if (!test_bit(ctx, &dev->ctx_work_bits))
105 ctx = -EAGAIN;
106 break;
107 }
108 } while (!test_bit(ctx, &dev->ctx_work_bits));
109 spin_unlock_irqrestore(&dev->condlock, flags);
110
111 return ctx;
112 }
113
114 /* Wake up context wait_queue */
115 static void wake_up_ctx(struct s5p_mfc_ctx *ctx, unsigned int reason,
116 unsigned int err)
117 {
118 ctx->int_cond = 1;
119 ctx->int_type = reason;
120 ctx->int_err = err;
121 wake_up(&ctx->queue);
122 }
123
124 /* Wake up device wait_queue */
125 static void wake_up_dev(struct s5p_mfc_dev *dev, unsigned int reason,
126 unsigned int err)
127 {
128 dev->int_cond = 1;
129 dev->int_type = reason;
130 dev->int_err = err;
131 wake_up(&dev->queue);
132 }
133
134 void s5p_mfc_cleanup_queue(struct list_head *lh, struct vb2_queue *vq)
135 {
136 struct s5p_mfc_buf *b;
137 int i;
138
139 while (!list_empty(lh)) {
140 b = list_entry(lh->next, struct s5p_mfc_buf, list);
141 for (i = 0; i < b->b->vb2_buf.num_planes; i++)
142 vb2_set_plane_payload(&b->b->vb2_buf, i, 0);
143 vb2_buffer_done(&b->b->vb2_buf, VB2_BUF_STATE_ERROR);
144 list_del(&b->list);
145 }
146 }
147
148 static void s5p_mfc_watchdog(struct timer_list *t)
149 {
150 struct s5p_mfc_dev *dev = from_timer(dev, t, watchdog_timer);
151
152 if (test_bit(0, &dev->hw_lock))
153 atomic_inc(&dev->watchdog_cnt);
154 if (atomic_read(&dev->watchdog_cnt) >= MFC_WATCHDOG_CNT) {
155 /* This means that hw is busy and no interrupts were
156 * generated by hw for the Nth time of running this
157 * watchdog timer. This usually means a serious hw
158 * error. Now it is time to kill all instances and
159 * reset the MFC. */
160 mfc_err("Time out during waiting for HW\n");
161 schedule_work(&dev->watchdog_work);
162 }
163 dev->watchdog_timer.expires = jiffies +
164 msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
165 add_timer(&dev->watchdog_timer);
166 }
167
168 static void s5p_mfc_watchdog_worker(struct work_struct *work)
169 {
170 struct s5p_mfc_dev *dev;
171 struct s5p_mfc_ctx *ctx;
172 unsigned long flags;
173 int mutex_locked;
174 int i, ret;
175
176 dev = container_of(work, struct s5p_mfc_dev, watchdog_work);
177
178 mfc_err("Driver timeout error handling\n");
179 /* Lock the mutex that protects open and release.
180 * This is necessary as they may load and unload firmware. */
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 /* Double check if there is at least one instance running.
205 * If no instance is in memory than no firmware should be present */
206 if (dev->num_inst > 0) {
207 ret = s5p_mfc_load_firmware(dev);
208 if (ret) {
209 mfc_err("Failed to reload FW\n");
210 goto unlock;
211 }
212 s5p_mfc_clock_on();
213 ret = s5p_mfc_init_hw(dev);
214 s5p_mfc_clock_off();
215 if (ret)
216 mfc_err("Failed to reinit FW\n");
217 }
218 unlock:
219 if (mutex_locked)
220 mutex_unlock(&dev->mfc_mutex);
221 }
222
223 static void s5p_mfc_handle_frame_all_extracted(struct s5p_mfc_ctx *ctx)
224 {
225 struct s5p_mfc_buf *dst_buf;
226 struct s5p_mfc_dev *dev = ctx->dev;
227
228 ctx->state = MFCINST_FINISHED;
229 ctx->sequence++;
230 while (!list_empty(&ctx->dst_queue)) {
231 dst_buf = list_entry(ctx->dst_queue.next,
232 struct s5p_mfc_buf, list);
233 mfc_debug(2, "Cleaning up buffer: %d\n",
234 dst_buf->b->vb2_buf.index);
235 vb2_set_plane_payload(&dst_buf->b->vb2_buf, 0, 0);
236 vb2_set_plane_payload(&dst_buf->b->vb2_buf, 1, 0);
237 list_del(&dst_buf->list);
238 dst_buf->flags |= MFC_BUF_FLAG_EOS;
239 ctx->dst_queue_cnt--;
240 dst_buf->b->sequence = (ctx->sequence++);
241
242 if (s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_top, ctx) ==
243 s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_bot, ctx))
244 dst_buf->b->field = V4L2_FIELD_NONE;
245 else
246 dst_buf->b->field = V4L2_FIELD_INTERLACED;
247 dst_buf->b->flags |= V4L2_BUF_FLAG_LAST;
248
249 ctx->dec_dst_flag &= ~(1 << dst_buf->b->vb2_buf.index);
250 vb2_buffer_done(&dst_buf->b->vb2_buf, VB2_BUF_STATE_DONE);
251 }
252 }
253
254 static void s5p_mfc_handle_frame_copy_time(struct s5p_mfc_ctx *ctx)
255 {
256 struct s5p_mfc_dev *dev = ctx->dev;
257 struct s5p_mfc_buf *dst_buf, *src_buf;
258 size_t dec_y_addr;
259 unsigned int frame_type;
260
261 /* Make sure we actually have a new frame before continuing. */
262 frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_dec_frame_type, dev);
263 if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED)
264 return;
265 dec_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dec_y_adr, dev);
266
267 /* Copy timestamp / timecode from decoded src to dst and set
268 appropriate flags. */
269 src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
270 list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
271 if (vb2_dma_contig_plane_dma_addr(&dst_buf->b->vb2_buf, 0)
272 == dec_y_addr) {
273 dst_buf->b->timecode =
274 src_buf->b->timecode;
275 dst_buf->b->vb2_buf.timestamp =
276 src_buf->b->vb2_buf.timestamp;
277 dst_buf->b->flags &=
278 ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
279 dst_buf->b->flags |=
280 src_buf->b->flags
281 & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
282 switch (frame_type) {
283 case S5P_FIMV_DECODE_FRAME_I_FRAME:
284 dst_buf->b->flags |=
285 V4L2_BUF_FLAG_KEYFRAME;
286 break;
287 case S5P_FIMV_DECODE_FRAME_P_FRAME:
288 dst_buf->b->flags |=
289 V4L2_BUF_FLAG_PFRAME;
290 break;
291 case S5P_FIMV_DECODE_FRAME_B_FRAME:
292 dst_buf->b->flags |=
293 V4L2_BUF_FLAG_BFRAME;
294 break;
295 default:
296 /* Don't know how to handle
297 S5P_FIMV_DECODE_FRAME_OTHER_FRAME. */
298 mfc_debug(2, "Unexpected frame type: %d\n",
299 frame_type);
300 }
301 break;
302 }
303 }
304 }
305
306 static void s5p_mfc_handle_frame_new(struct s5p_mfc_ctx *ctx, unsigned int err)
307 {
308 struct s5p_mfc_dev *dev = ctx->dev;
309 struct s5p_mfc_buf *dst_buf;
310 size_t dspl_y_addr;
311 unsigned int frame_type;
312
313 dspl_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_y_adr, dev);
314 if (IS_MFCV6_PLUS(dev))
315 frame_type = s5p_mfc_hw_call(dev->mfc_ops,
316 get_disp_frame_type, ctx);
317 else
318 frame_type = s5p_mfc_hw_call(dev->mfc_ops,
319 get_dec_frame_type, dev);
320
321 /* If frame is same as previous then skip and do not dequeue */
322 if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) {
323 if (!ctx->after_packed_pb)
324 ctx->sequence++;
325 ctx->after_packed_pb = 0;
326 return;
327 }
328 ctx->sequence++;
329 /* The MFC returns address of the buffer, now we have to
330 * check which videobuf does it correspond to */
331 list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
332 /* Check if this is the buffer we're looking for */
333 if (vb2_dma_contig_plane_dma_addr(&dst_buf->b->vb2_buf, 0)
334 == dspl_y_addr) {
335 list_del(&dst_buf->list);
336 ctx->dst_queue_cnt--;
337 dst_buf->b->sequence = ctx->sequence;
338 if (s5p_mfc_hw_call(dev->mfc_ops,
339 get_pic_type_top, ctx) ==
340 s5p_mfc_hw_call(dev->mfc_ops,
341 get_pic_type_bot, ctx))
342 dst_buf->b->field = V4L2_FIELD_NONE;
343 else
344 dst_buf->b->field =
345 V4L2_FIELD_INTERLACED;
346 vb2_set_plane_payload(&dst_buf->b->vb2_buf, 0,
347 ctx->luma_size);
348 vb2_set_plane_payload(&dst_buf->b->vb2_buf, 1,
349 ctx->chroma_size);
350 clear_bit(dst_buf->b->vb2_buf.index,
351 &ctx->dec_dst_flag);
352
353 vb2_buffer_done(&dst_buf->b->vb2_buf, err ?
354 VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
355
356 break;
357 }
358 }
359 }
360
361 /* Handle frame decoding interrupt */
362 static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx,
363 unsigned int reason, unsigned int err)
364 {
365 struct s5p_mfc_dev *dev = ctx->dev;
366 unsigned int dst_frame_status;
367 unsigned int dec_frame_status;
368 struct s5p_mfc_buf *src_buf;
369 unsigned int res_change;
370
371 dst_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev)
372 & S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK;
373 dec_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dec_status, dev)
374 & S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK;
375 res_change = (s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev)
376 & S5P_FIMV_DEC_STATUS_RESOLUTION_MASK)
377 >> S5P_FIMV_DEC_STATUS_RESOLUTION_SHIFT;
378 mfc_debug(2, "Frame Status: %x\n", dst_frame_status);
379 if (ctx->state == MFCINST_RES_CHANGE_INIT)
380 ctx->state = MFCINST_RES_CHANGE_FLUSH;
381 if (res_change == S5P_FIMV_RES_INCREASE ||
382 res_change == S5P_FIMV_RES_DECREASE) {
383 ctx->state = MFCINST_RES_CHANGE_INIT;
384 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
385 wake_up_ctx(ctx, reason, err);
386 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
387 s5p_mfc_clock_off();
388 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
389 return;
390 }
391 if (ctx->dpb_flush_flag)
392 ctx->dpb_flush_flag = 0;
393
394 /* All frames remaining in the buffer have been extracted */
395 if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_EMPTY) {
396 if (ctx->state == MFCINST_RES_CHANGE_FLUSH) {
397 static const struct v4l2_event ev_src_ch = {
398 .type = V4L2_EVENT_SOURCE_CHANGE,
399 .u.src_change.changes =
400 V4L2_EVENT_SRC_CH_RESOLUTION,
401 };
402
403 s5p_mfc_handle_frame_all_extracted(ctx);
404 ctx->state = MFCINST_RES_CHANGE_END;
405 v4l2_event_queue_fh(&ctx->fh, &ev_src_ch);
406
407 goto leave_handle_frame;
408 } else {
409 s5p_mfc_handle_frame_all_extracted(ctx);
410 }
411 }
412
413 if (dec_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY)
414 s5p_mfc_handle_frame_copy_time(ctx);
415
416 /* A frame has been decoded and is in the buffer */
417 if (dst_frame_status == S5P_FIMV_DEC_STATUS_DISPLAY_ONLY ||
418 dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY) {
419 s5p_mfc_handle_frame_new(ctx, err);
420 } else {
421 mfc_debug(2, "No frame decode\n");
422 }
423 /* Mark source buffer as complete */
424 if (dst_frame_status != S5P_FIMV_DEC_STATUS_DISPLAY_ONLY
425 && !list_empty(&ctx->src_queue)) {
426 src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf,
427 list);
428 ctx->consumed_stream += s5p_mfc_hw_call(dev->mfc_ops,
429 get_consumed_stream, dev);
430 if (ctx->codec_mode != S5P_MFC_CODEC_H264_DEC &&
431 ctx->codec_mode != S5P_MFC_CODEC_VP8_DEC &&
432 ctx->consumed_stream + STUFF_BYTE <
433 src_buf->b->vb2_buf.planes[0].bytesused) {
434 /* Run MFC again on the same buffer */
435 mfc_debug(2, "Running again the same buffer\n");
436 ctx->after_packed_pb = 1;
437 } else {
438 mfc_debug(2, "MFC needs next buffer\n");
439 ctx->consumed_stream = 0;
440 if (src_buf->flags & MFC_BUF_FLAG_EOS)
441 ctx->state = MFCINST_FINISHING;
442 list_del(&src_buf->list);
443 ctx->src_queue_cnt--;
444 if (s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) > 0)
445 vb2_buffer_done(&src_buf->b->vb2_buf,
446 VB2_BUF_STATE_ERROR);
447 else
448 vb2_buffer_done(&src_buf->b->vb2_buf,
449 VB2_BUF_STATE_DONE);
450 }
451 }
452 leave_handle_frame:
453 if ((ctx->src_queue_cnt == 0 && ctx->state != MFCINST_FINISHING)
454 || ctx->dst_queue_cnt < ctx->pb_count)
455 clear_work_bit(ctx);
456 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
457 wake_up_ctx(ctx, reason, err);
458 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
459 s5p_mfc_clock_off();
460 /* if suspending, wake up device and do not try_run again*/
461 if (test_bit(0, &dev->enter_suspend))
462 wake_up_dev(dev, reason, err);
463 else
464 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
465 }
466
467 /* Error handling for interrupt */
468 static void s5p_mfc_handle_error(struct s5p_mfc_dev *dev,
469 struct s5p_mfc_ctx *ctx, unsigned int reason, unsigned int err)
470 {
471 mfc_err("Interrupt Error: %08x\n", err);
472
473 if (ctx) {
474 /* Error recovery is dependent on the state of context */
475 switch (ctx->state) {
476 case MFCINST_RES_CHANGE_INIT:
477 case MFCINST_RES_CHANGE_FLUSH:
478 case MFCINST_RES_CHANGE_END:
479 case MFCINST_FINISHING:
480 case MFCINST_FINISHED:
481 case MFCINST_RUNNING:
482 /* It is highly probable that an error occurred
483 * while decoding a frame */
484 clear_work_bit(ctx);
485 ctx->state = MFCINST_ERROR;
486 /* Mark all dst buffers as having an error */
487 s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst);
488 /* Mark all src buffers as having an error */
489 s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src);
490 wake_up_ctx(ctx, reason, err);
491 break;
492 default:
493 clear_work_bit(ctx);
494 ctx->state = MFCINST_ERROR;
495 wake_up_ctx(ctx, reason, err);
496 break;
497 }
498 }
499 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
500 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
501 s5p_mfc_clock_off();
502 wake_up_dev(dev, reason, err);
503 }
504
505 /* Header parsing interrupt handling */
506 static void s5p_mfc_handle_seq_done(struct s5p_mfc_ctx *ctx,
507 unsigned int reason, unsigned int err)
508 {
509 struct s5p_mfc_dev *dev;
510
511 if (!ctx)
512 return;
513 dev = ctx->dev;
514 if (ctx->c_ops->post_seq_start) {
515 if (ctx->c_ops->post_seq_start(ctx))
516 mfc_err("post_seq_start() failed\n");
517 } else {
518 ctx->img_width = s5p_mfc_hw_call(dev->mfc_ops, get_img_width,
519 dev);
520 ctx->img_height = s5p_mfc_hw_call(dev->mfc_ops, get_img_height,
521 dev);
522
523 s5p_mfc_hw_call(dev->mfc_ops, dec_calc_dpb_size, ctx);
524
525 ctx->pb_count = s5p_mfc_hw_call(dev->mfc_ops, get_dpb_count,
526 dev);
527 ctx->mv_count = s5p_mfc_hw_call(dev->mfc_ops, get_mv_count,
528 dev);
529 if (ctx->img_width == 0 || ctx->img_height == 0)
530 ctx->state = MFCINST_ERROR;
531 else
532 ctx->state = MFCINST_HEAD_PARSED;
533
534 if ((ctx->codec_mode == S5P_MFC_CODEC_H264_DEC ||
535 ctx->codec_mode == S5P_MFC_CODEC_H264_MVC_DEC) &&
536 !list_empty(&ctx->src_queue)) {
537 struct s5p_mfc_buf *src_buf;
538 src_buf = list_entry(ctx->src_queue.next,
539 struct s5p_mfc_buf, list);
540 if (s5p_mfc_hw_call(dev->mfc_ops, get_consumed_stream,
541 dev) <
542 src_buf->b->vb2_buf.planes[0].bytesused)
543 ctx->head_processed = 0;
544 else
545 ctx->head_processed = 1;
546 } else {
547 ctx->head_processed = 1;
548 }
549 }
550 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
551 clear_work_bit(ctx);
552 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
553 s5p_mfc_clock_off();
554 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
555 wake_up_ctx(ctx, reason, err);
556 }
557
558 /* Header parsing interrupt handling */
559 static void s5p_mfc_handle_init_buffers(struct s5p_mfc_ctx *ctx,
560 unsigned int reason, unsigned int err)
561 {
562 struct s5p_mfc_buf *src_buf;
563 struct s5p_mfc_dev *dev;
564
565 if (!ctx)
566 return;
567 dev = ctx->dev;
568 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
569 ctx->int_type = reason;
570 ctx->int_err = err;
571 ctx->int_cond = 1;
572 clear_work_bit(ctx);
573 if (err == 0) {
574 ctx->state = MFCINST_RUNNING;
575 if (!ctx->dpb_flush_flag && ctx->head_processed) {
576 if (!list_empty(&ctx->src_queue)) {
577 src_buf = list_entry(ctx->src_queue.next,
578 struct s5p_mfc_buf, list);
579 list_del(&src_buf->list);
580 ctx->src_queue_cnt--;
581 vb2_buffer_done(&src_buf->b->vb2_buf,
582 VB2_BUF_STATE_DONE);
583 }
584 } else {
585 ctx->dpb_flush_flag = 0;
586 }
587 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
588
589 s5p_mfc_clock_off();
590
591 wake_up(&ctx->queue);
592 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
593 } else {
594 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
595
596 s5p_mfc_clock_off();
597
598 wake_up(&ctx->queue);
599 }
600 }
601
602 static void s5p_mfc_handle_stream_complete(struct s5p_mfc_ctx *ctx)
603 {
604 struct s5p_mfc_dev *dev = ctx->dev;
605 struct s5p_mfc_buf *mb_entry;
606
607 mfc_debug(2, "Stream completed\n");
608
609 ctx->state = MFCINST_FINISHED;
610
611 if (!list_empty(&ctx->dst_queue)) {
612 mb_entry = list_entry(ctx->dst_queue.next, struct s5p_mfc_buf,
613 list);
614 list_del(&mb_entry->list);
615 ctx->dst_queue_cnt--;
616 vb2_set_plane_payload(&mb_entry->b->vb2_buf, 0, 0);
617 vb2_buffer_done(&mb_entry->b->vb2_buf, VB2_BUF_STATE_DONE);
618 }
619
620 clear_work_bit(ctx);
621
622 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
623
624 s5p_mfc_clock_off();
625 wake_up(&ctx->queue);
626 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
627 }
628
629 /* Interrupt processing */
630 static irqreturn_t s5p_mfc_irq(int irq, void *priv)
631 {
632 struct s5p_mfc_dev *dev = priv;
633 struct s5p_mfc_ctx *ctx;
634 unsigned int reason;
635 unsigned int err;
636
637 mfc_debug_enter();
638 /* Reset the timeout watchdog */
639 atomic_set(&dev->watchdog_cnt, 0);
640 spin_lock(&dev->irqlock);
641 ctx = dev->ctx[dev->curr_ctx];
642 /* Get the reason of interrupt and the error code */
643 reason = s5p_mfc_hw_call(dev->mfc_ops, get_int_reason, dev);
644 err = s5p_mfc_hw_call(dev->mfc_ops, get_int_err, dev);
645 mfc_debug(1, "Int reason: %d (err: %08x)\n", reason, err);
646 switch (reason) {
647 case S5P_MFC_R2H_CMD_ERR_RET:
648 /* An error has occurred */
649 if (ctx->state == MFCINST_RUNNING &&
650 (s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) >=
651 dev->warn_start ||
652 err == S5P_FIMV_ERR_NO_VALID_SEQ_HDR ||
653 err == S5P_FIMV_ERR_INCOMPLETE_FRAME ||
654 err == S5P_FIMV_ERR_TIMEOUT))
655 s5p_mfc_handle_frame(ctx, reason, err);
656 else
657 s5p_mfc_handle_error(dev, ctx, reason, err);
658 clear_bit(0, &dev->enter_suspend);
659 break;
660
661 case S5P_MFC_R2H_CMD_SLICE_DONE_RET:
662 case S5P_MFC_R2H_CMD_FIELD_DONE_RET:
663 case S5P_MFC_R2H_CMD_FRAME_DONE_RET:
664 if (ctx->c_ops->post_frame_start) {
665 if (ctx->c_ops->post_frame_start(ctx))
666 mfc_err("post_frame_start() failed\n");
667
668 if (ctx->state == MFCINST_FINISHING &&
669 list_empty(&ctx->ref_queue)) {
670 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
671 s5p_mfc_handle_stream_complete(ctx);
672 break;
673 }
674 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
675 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
676 s5p_mfc_clock_off();
677 wake_up_ctx(ctx, reason, err);
678 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
679 } else {
680 s5p_mfc_handle_frame(ctx, reason, err);
681 }
682 break;
683
684 case S5P_MFC_R2H_CMD_SEQ_DONE_RET:
685 s5p_mfc_handle_seq_done(ctx, reason, err);
686 break;
687
688 case S5P_MFC_R2H_CMD_OPEN_INSTANCE_RET:
689 ctx->inst_no = s5p_mfc_hw_call(dev->mfc_ops, get_inst_no, dev);
690 ctx->state = MFCINST_GOT_INST;
691 goto irq_cleanup_hw;
692
693 case S5P_MFC_R2H_CMD_CLOSE_INSTANCE_RET:
694 ctx->inst_no = MFC_NO_INSTANCE_SET;
695 ctx->state = MFCINST_FREE;
696 goto irq_cleanup_hw;
697
698 case S5P_MFC_R2H_CMD_SYS_INIT_RET:
699 case S5P_MFC_R2H_CMD_FW_STATUS_RET:
700 case S5P_MFC_R2H_CMD_SLEEP_RET:
701 case S5P_MFC_R2H_CMD_WAKEUP_RET:
702 if (ctx)
703 clear_work_bit(ctx);
704 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
705 clear_bit(0, &dev->hw_lock);
706 clear_bit(0, &dev->enter_suspend);
707 wake_up_dev(dev, reason, err);
708 break;
709
710 case S5P_MFC_R2H_CMD_INIT_BUFFERS_RET:
711 s5p_mfc_handle_init_buffers(ctx, reason, err);
712 break;
713
714 case S5P_MFC_R2H_CMD_COMPLETE_SEQ_RET:
715 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
716 ctx->int_type = reason;
717 ctx->int_err = err;
718 s5p_mfc_handle_stream_complete(ctx);
719 break;
720
721 case S5P_MFC_R2H_CMD_DPB_FLUSH_RET:
722 ctx->state = MFCINST_RUNNING;
723 goto irq_cleanup_hw;
724
725 default:
726 mfc_debug(2, "Unknown int reason\n");
727 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
728 }
729 spin_unlock(&dev->irqlock);
730 mfc_debug_leave();
731 return IRQ_HANDLED;
732 irq_cleanup_hw:
733 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
734 ctx->int_type = reason;
735 ctx->int_err = err;
736 ctx->int_cond = 1;
737 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
738 mfc_err("Failed to unlock hw\n");
739
740 s5p_mfc_clock_off();
741 clear_work_bit(ctx);
742 wake_up(&ctx->queue);
743
744 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
745 spin_unlock(&dev->irqlock);
746 mfc_debug(2, "Exit via irq_cleanup_hw\n");
747 return IRQ_HANDLED;
748 }
749
750 /* Open an MFC node */
751 static int s5p_mfc_open(struct file *file)
752 {
753 struct video_device *vdev = video_devdata(file);
754 struct s5p_mfc_dev *dev = video_drvdata(file);
755 struct s5p_mfc_ctx *ctx = NULL;
756 struct vb2_queue *q;
757 int ret = 0;
758
759 mfc_debug_enter();
760 if (mutex_lock_interruptible(&dev->mfc_mutex))
761 return -ERESTARTSYS;
762 dev->num_inst++; /* It is guarded by mfc_mutex in vfd */
763 /* Allocate memory for context */
764 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
765 if (!ctx) {
766 ret = -ENOMEM;
767 goto err_alloc;
768 }
769 init_waitqueue_head(&ctx->queue);
770 v4l2_fh_init(&ctx->fh, vdev);
771 file->private_data = &ctx->fh;
772 v4l2_fh_add(&ctx->fh);
773 ctx->dev = dev;
774 INIT_LIST_HEAD(&ctx->src_queue);
775 INIT_LIST_HEAD(&ctx->dst_queue);
776 ctx->src_queue_cnt = 0;
777 ctx->dst_queue_cnt = 0;
778 /* Get context number */
779 ctx->num = 0;
780 while (dev->ctx[ctx->num]) {
781 ctx->num++;
782 if (ctx->num >= MFC_NUM_CONTEXTS) {
783 mfc_debug(2, "Too many open contexts\n");
784 ret = -EBUSY;
785 goto err_no_ctx;
786 }
787 }
788 /* Mark context as idle */
789 clear_work_bit_irqsave(ctx);
790 dev->ctx[ctx->num] = ctx;
791 if (vdev == dev->vfd_dec) {
792 ctx->type = MFCINST_DECODER;
793 ctx->c_ops = get_dec_codec_ops();
794 s5p_mfc_dec_init(ctx);
795 /* Setup ctrl handler */
796 ret = s5p_mfc_dec_ctrls_setup(ctx);
797 if (ret) {
798 mfc_err("Failed to setup mfc controls\n");
799 goto err_ctrls_setup;
800 }
801 } else if (vdev == dev->vfd_enc) {
802 ctx->type = MFCINST_ENCODER;
803 ctx->c_ops = get_enc_codec_ops();
804 /* only for encoder */
805 INIT_LIST_HEAD(&ctx->ref_queue);
806 ctx->ref_queue_cnt = 0;
807 s5p_mfc_enc_init(ctx);
808 /* Setup ctrl handler */
809 ret = s5p_mfc_enc_ctrls_setup(ctx);
810 if (ret) {
811 mfc_err("Failed to setup mfc controls\n");
812 goto err_ctrls_setup;
813 }
814 } else {
815 ret = -ENOENT;
816 goto err_bad_node;
817 }
818 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
819 ctx->inst_no = MFC_NO_INSTANCE_SET;
820 /* Load firmware if this is the first instance */
821 if (dev->num_inst == 1) {
822 dev->watchdog_timer.expires = jiffies +
823 msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
824 add_timer(&dev->watchdog_timer);
825 ret = s5p_mfc_power_on();
826 if (ret < 0) {
827 mfc_err("power on failed\n");
828 goto err_pwr_enable;
829 }
830 s5p_mfc_clock_on();
831 ret = s5p_mfc_load_firmware(dev);
832 if (ret) {
833 s5p_mfc_clock_off();
834 goto err_load_fw;
835 }
836 /* Init the FW */
837 ret = s5p_mfc_init_hw(dev);
838 s5p_mfc_clock_off();
839 if (ret)
840 goto err_init_hw;
841 }
842 /* Init videobuf2 queue for CAPTURE */
843 q = &ctx->vq_dst;
844 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
845 q->drv_priv = &ctx->fh;
846 q->lock = &dev->mfc_mutex;
847 if (vdev == dev->vfd_dec) {
848 q->io_modes = VB2_MMAP;
849 q->ops = get_dec_queue_ops();
850 } else if (vdev == dev->vfd_enc) {
851 q->io_modes = VB2_MMAP | VB2_USERPTR;
852 q->ops = get_enc_queue_ops();
853 } else {
854 ret = -ENOENT;
855 goto err_queue_init;
856 }
857 /*
858 * We'll do mostly sequential access, so sacrifice TLB efficiency for
859 * faster allocation.
860 */
861 q->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES;
862 q->mem_ops = &vb2_dma_contig_memops;
863 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
864 ret = vb2_queue_init(q);
865 if (ret) {
866 mfc_err("Failed to initialize videobuf2 queue(capture)\n");
867 goto err_queue_init;
868 }
869 /* Init videobuf2 queue for OUTPUT */
870 q = &ctx->vq_src;
871 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
872 q->drv_priv = &ctx->fh;
873 q->lock = &dev->mfc_mutex;
874 if (vdev == dev->vfd_dec) {
875 q->io_modes = VB2_MMAP;
876 q->ops = get_dec_queue_ops();
877 } else if (vdev == dev->vfd_enc) {
878 q->io_modes = VB2_MMAP | VB2_USERPTR;
879 q->ops = get_enc_queue_ops();
880 } else {
881 ret = -ENOENT;
882 goto err_queue_init;
883 }
884 /* One way to indicate end-of-stream for MFC is to set the
885 * bytesused == 0. However by default videobuf2 handles bytesused
886 * equal to 0 as a special case and changes its value to the size
887 * of the buffer. Set the allow_zero_bytesused flag so that videobuf2
888 * will keep the value of bytesused intact.
889 */
890 q->allow_zero_bytesused = 1;
891
892 /*
893 * We'll do mostly sequential access, so sacrifice TLB efficiency for
894 * faster allocation.
895 */
896 q->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES;
897 q->mem_ops = &vb2_dma_contig_memops;
898 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
899 ret = vb2_queue_init(q);
900 if (ret) {
901 mfc_err("Failed to initialize videobuf2 queue(output)\n");
902 goto err_queue_init;
903 }
904 mutex_unlock(&dev->mfc_mutex);
905 mfc_debug_leave();
906 return ret;
907 /* Deinit when failure occurred */
908 err_queue_init:
909 if (dev->num_inst == 1)
910 s5p_mfc_deinit_hw(dev);
911 err_init_hw:
912 err_load_fw:
913 err_pwr_enable:
914 if (dev->num_inst == 1) {
915 if (s5p_mfc_power_off() < 0)
916 mfc_err("power off failed\n");
917 del_timer_sync(&dev->watchdog_timer);
918 }
919 err_ctrls_setup:
920 s5p_mfc_dec_ctrls_delete(ctx);
921 err_bad_node:
922 dev->ctx[ctx->num] = NULL;
923 err_no_ctx:
924 v4l2_fh_del(&ctx->fh);
925 v4l2_fh_exit(&ctx->fh);
926 kfree(ctx);
927 err_alloc:
928 dev->num_inst--;
929 mutex_unlock(&dev->mfc_mutex);
930 mfc_debug_leave();
931 return ret;
932 }
933
934 /* Release MFC context */
935 static int s5p_mfc_release(struct file *file)
936 {
937 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
938 struct s5p_mfc_dev *dev = ctx->dev;
939
940 /* if dev is null, do cleanup that doesn't need dev */
941 mfc_debug_enter();
942 if (dev)
943 mutex_lock(&dev->mfc_mutex);
944 vb2_queue_release(&ctx->vq_src);
945 vb2_queue_release(&ctx->vq_dst);
946 if (dev) {
947 s5p_mfc_clock_on();
948
949 /* Mark context as idle */
950 clear_work_bit_irqsave(ctx);
951 /*
952 * If instance was initialised and not yet freed,
953 * return instance and free resources
954 */
955 if (ctx->state != MFCINST_FREE && ctx->state != MFCINST_INIT) {
956 mfc_debug(2, "Has to free instance\n");
957 s5p_mfc_close_mfc_inst(dev, ctx);
958 }
959 /* hardware locking scheme */
960 if (dev->curr_ctx == ctx->num)
961 clear_bit(0, &dev->hw_lock);
962 dev->num_inst--;
963 if (dev->num_inst == 0) {
964 mfc_debug(2, "Last instance\n");
965 s5p_mfc_deinit_hw(dev);
966 del_timer_sync(&dev->watchdog_timer);
967 s5p_mfc_clock_off();
968 if (s5p_mfc_power_off() < 0)
969 mfc_err("Power off failed\n");
970 } else {
971 mfc_debug(2, "Shutting down clock\n");
972 s5p_mfc_clock_off();
973 }
974 }
975 if (dev)
976 dev->ctx[ctx->num] = NULL;
977 s5p_mfc_dec_ctrls_delete(ctx);
978 v4l2_fh_del(&ctx->fh);
979 /* vdev is gone if dev is null */
980 if (dev)
981 v4l2_fh_exit(&ctx->fh);
982 kfree(ctx);
983 mfc_debug_leave();
984 if (dev)
985 mutex_unlock(&dev->mfc_mutex);
986
987 return 0;
988 }
989
990 /* Poll */
991 static __poll_t s5p_mfc_poll(struct file *file,
992 struct poll_table_struct *wait)
993 {
994 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
995 struct s5p_mfc_dev *dev = ctx->dev;
996 struct vb2_queue *src_q, *dst_q;
997 struct vb2_buffer *src_vb = NULL, *dst_vb = NULL;
998 __poll_t rc = 0;
999 unsigned long flags;
1000
1001 mutex_lock(&dev->mfc_mutex);
1002 src_q = &ctx->vq_src;
1003 dst_q = &ctx->vq_dst;
1004 /*
1005 * There has to be at least one buffer queued on each queued_list, which
1006 * means either in driver already or waiting for driver to claim it
1007 * and start processing.
1008 */
1009 if ((!src_q->streaming || list_empty(&src_q->queued_list))
1010 && (!dst_q->streaming || list_empty(&dst_q->queued_list))) {
1011 rc = EPOLLERR;
1012 goto end;
1013 }
1014 mutex_unlock(&dev->mfc_mutex);
1015 poll_wait(file, &ctx->fh.wait, wait);
1016 poll_wait(file, &src_q->done_wq, wait);
1017 poll_wait(file, &dst_q->done_wq, wait);
1018 mutex_lock(&dev->mfc_mutex);
1019 if (v4l2_event_pending(&ctx->fh))
1020 rc |= EPOLLPRI;
1021 spin_lock_irqsave(&src_q->done_lock, flags);
1022 if (!list_empty(&src_q->done_list))
1023 src_vb = list_first_entry(&src_q->done_list, struct vb2_buffer,
1024 done_entry);
1025 if (src_vb && (src_vb->state == VB2_BUF_STATE_DONE
1026 || src_vb->state == VB2_BUF_STATE_ERROR))
1027 rc |= EPOLLOUT | EPOLLWRNORM;
1028 spin_unlock_irqrestore(&src_q->done_lock, flags);
1029 spin_lock_irqsave(&dst_q->done_lock, flags);
1030 if (!list_empty(&dst_q->done_list))
1031 dst_vb = list_first_entry(&dst_q->done_list, struct vb2_buffer,
1032 done_entry);
1033 if (dst_vb && (dst_vb->state == VB2_BUF_STATE_DONE
1034 || dst_vb->state == VB2_BUF_STATE_ERROR))
1035 rc |= EPOLLIN | EPOLLRDNORM;
1036 spin_unlock_irqrestore(&dst_q->done_lock, flags);
1037 end:
1038 mutex_unlock(&dev->mfc_mutex);
1039 return rc;
1040 }
1041
1042 /* Mmap */
1043 static int s5p_mfc_mmap(struct file *file, struct vm_area_struct *vma)
1044 {
1045 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
1046 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
1047 int ret;
1048
1049 if (offset < DST_QUEUE_OFF_BASE) {
1050 mfc_debug(2, "mmaping source\n");
1051 ret = vb2_mmap(&ctx->vq_src, vma);
1052 } else { /* capture */
1053 mfc_debug(2, "mmaping destination\n");
1054 vma->vm_pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT);
1055 ret = vb2_mmap(&ctx->vq_dst, vma);
1056 }
1057 return ret;
1058 }
1059
1060 /* v4l2 ops */
1061 static const struct v4l2_file_operations s5p_mfc_fops = {
1062 .owner = THIS_MODULE,
1063 .open = s5p_mfc_open,
1064 .release = s5p_mfc_release,
1065 .poll = s5p_mfc_poll,
1066 .unlocked_ioctl = video_ioctl2,
1067 .mmap = s5p_mfc_mmap,
1068 };
1069
1070 /* DMA memory related helper functions */
1071 static void s5p_mfc_memdev_release(struct device *dev)
1072 {
1073 of_reserved_mem_device_release(dev);
1074 }
1075
1076 static struct device *s5p_mfc_alloc_memdev(struct device *dev,
1077 const char *name, unsigned int idx)
1078 {
1079 struct device *child;
1080 int ret;
1081
1082 child = devm_kzalloc(dev, sizeof(*child), GFP_KERNEL);
1083 if (!child)
1084 return NULL;
1085
1086 device_initialize(child);
1087 dev_set_name(child, "%s:%s", dev_name(dev), name);
1088 child->parent = dev;
1089 child->bus = dev->bus;
1090 child->coherent_dma_mask = dev->coherent_dma_mask;
1091 child->dma_mask = dev->dma_mask;
1092 child->release = s5p_mfc_memdev_release;
1093
1094 if (device_add(child) == 0) {
1095 ret = of_reserved_mem_device_init_by_idx(child, dev->of_node,
1096 idx);
1097 if (ret == 0)
1098 return child;
1099 device_del(child);
1100 }
1101
1102 put_device(child);
1103 return NULL;
1104 }
1105
1106 static int s5p_mfc_configure_2port_memory(struct s5p_mfc_dev *mfc_dev)
1107 {
1108 struct device *dev = &mfc_dev->plat_dev->dev;
1109 void *bank2_virt;
1110 dma_addr_t bank2_dma_addr;
1111 unsigned long align_size = 1 << MFC_BASE_ALIGN_ORDER;
1112 int ret;
1113
1114 /*
1115 * Create and initialize virtual devices for accessing
1116 * reserved memory regions.
1117 */
1118 mfc_dev->mem_dev[BANK_L_CTX] = s5p_mfc_alloc_memdev(dev, "left",
1119 BANK_L_CTX);
1120 if (!mfc_dev->mem_dev[BANK_L_CTX])
1121 return -ENODEV;
1122 mfc_dev->mem_dev[BANK_R_CTX] = s5p_mfc_alloc_memdev(dev, "right",
1123 BANK_R_CTX);
1124 if (!mfc_dev->mem_dev[BANK_R_CTX]) {
1125 device_unregister(mfc_dev->mem_dev[BANK_L_CTX]);
1126 return -ENODEV;
1127 }
1128
1129 /* Allocate memory for firmware and initialize both banks addresses */
1130 ret = s5p_mfc_alloc_firmware(mfc_dev);
1131 if (ret) {
1132 device_unregister(mfc_dev->mem_dev[BANK_R_CTX]);
1133 device_unregister(mfc_dev->mem_dev[BANK_L_CTX]);
1134 return ret;
1135 }
1136
1137 mfc_dev->dma_base[BANK_L_CTX] = mfc_dev->fw_buf.dma;
1138
1139 bank2_virt = dma_alloc_coherent(mfc_dev->mem_dev[BANK_R_CTX],
1140 align_size, &bank2_dma_addr, GFP_KERNEL);
1141 if (!bank2_virt) {
1142 mfc_err("Allocating bank2 base failed\n");
1143 s5p_mfc_release_firmware(mfc_dev);
1144 device_unregister(mfc_dev->mem_dev[BANK_R_CTX]);
1145 device_unregister(mfc_dev->mem_dev[BANK_L_CTX]);
1146 return -ENOMEM;
1147 }
1148
1149 /* Valid buffers passed to MFC encoder with LAST_FRAME command
1150 * should not have address of bank2 - MFC will treat it as a null frame.
1151 * To avoid such situation we set bank2 address below the pool address.
1152 */
1153 mfc_dev->dma_base[BANK_R_CTX] = bank2_dma_addr - align_size;
1154
1155 dma_free_coherent(mfc_dev->mem_dev[BANK_R_CTX], align_size, bank2_virt,
1156 bank2_dma_addr);
1157
1158 vb2_dma_contig_set_max_seg_size(mfc_dev->mem_dev[BANK_L_CTX],
1159 DMA_BIT_MASK(32));
1160 vb2_dma_contig_set_max_seg_size(mfc_dev->mem_dev[BANK_R_CTX],
1161 DMA_BIT_MASK(32));
1162
1163 return 0;
1164 }
1165
1166 static void s5p_mfc_unconfigure_2port_memory(struct s5p_mfc_dev *mfc_dev)
1167 {
1168 device_unregister(mfc_dev->mem_dev[BANK_L_CTX]);
1169 device_unregister(mfc_dev->mem_dev[BANK_R_CTX]);
1170 vb2_dma_contig_clear_max_seg_size(mfc_dev->mem_dev[BANK_L_CTX]);
1171 vb2_dma_contig_clear_max_seg_size(mfc_dev->mem_dev[BANK_R_CTX]);
1172 }
1173
1174 static int s5p_mfc_configure_common_memory(struct s5p_mfc_dev *mfc_dev)
1175 {
1176 struct device *dev = &mfc_dev->plat_dev->dev;
1177 unsigned long mem_size = SZ_4M;
1178 unsigned int bitmap_size;
1179
1180 if (IS_ENABLED(CONFIG_DMA_CMA) || exynos_is_iommu_available(dev))
1181 mem_size = SZ_8M;
1182
1183 if (mfc_mem_size)
1184 mem_size = memparse(mfc_mem_size, NULL);
1185
1186 bitmap_size = BITS_TO_LONGS(mem_size >> PAGE_SHIFT) * sizeof(long);
1187
1188 mfc_dev->mem_bitmap = kzalloc(bitmap_size, GFP_KERNEL);
1189 if (!mfc_dev->mem_bitmap)
1190 return -ENOMEM;
1191
1192 mfc_dev->mem_virt = dma_alloc_coherent(dev, mem_size,
1193 &mfc_dev->mem_base, GFP_KERNEL);
1194 if (!mfc_dev->mem_virt) {
1195 kfree(mfc_dev->mem_bitmap);
1196 dev_err(dev, "failed to preallocate %ld MiB for the firmware and context buffers\n",
1197 (mem_size / SZ_1M));
1198 return -ENOMEM;
1199 }
1200 mfc_dev->mem_size = mem_size;
1201 mfc_dev->dma_base[BANK_L_CTX] = mfc_dev->mem_base;
1202 mfc_dev->dma_base[BANK_R_CTX] = mfc_dev->mem_base;
1203
1204 /*
1205 * MFC hardware cannot handle 0 as a base address, so mark first 128K
1206 * as used (to keep required base alignment) and adjust base address
1207 */
1208 if (mfc_dev->mem_base == (dma_addr_t)0) {
1209 unsigned int offset = 1 << MFC_BASE_ALIGN_ORDER;
1210
1211 bitmap_set(mfc_dev->mem_bitmap, 0, offset >> PAGE_SHIFT);
1212 mfc_dev->dma_base[BANK_L_CTX] += offset;
1213 mfc_dev->dma_base[BANK_R_CTX] += offset;
1214 }
1215
1216 /* Firmware allocation cannot fail in this case */
1217 s5p_mfc_alloc_firmware(mfc_dev);
1218
1219 mfc_dev->mem_dev[BANK_L_CTX] = mfc_dev->mem_dev[BANK_R_CTX] = dev;
1220 vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
1221
1222 dev_info(dev, "preallocated %ld MiB buffer for the firmware and context buffers\n",
1223 (mem_size / SZ_1M));
1224
1225 return 0;
1226 }
1227
1228 static void s5p_mfc_unconfigure_common_memory(struct s5p_mfc_dev *mfc_dev)
1229 {
1230 struct device *dev = &mfc_dev->plat_dev->dev;
1231
1232 dma_free_coherent(dev, mfc_dev->mem_size, mfc_dev->mem_virt,
1233 mfc_dev->mem_base);
1234 kfree(mfc_dev->mem_bitmap);
1235 vb2_dma_contig_clear_max_seg_size(dev);
1236 }
1237
1238 static int s5p_mfc_configure_dma_memory(struct s5p_mfc_dev *mfc_dev)
1239 {
1240 struct device *dev = &mfc_dev->plat_dev->dev;
1241
1242 if (exynos_is_iommu_available(dev) || !IS_TWOPORT(mfc_dev))
1243 return s5p_mfc_configure_common_memory(mfc_dev);
1244 else
1245 return s5p_mfc_configure_2port_memory(mfc_dev);
1246 }
1247
1248 static void s5p_mfc_unconfigure_dma_memory(struct s5p_mfc_dev *mfc_dev)
1249 {
1250 struct device *dev = &mfc_dev->plat_dev->dev;
1251
1252 s5p_mfc_release_firmware(mfc_dev);
1253 if (exynos_is_iommu_available(dev) || !IS_TWOPORT(mfc_dev))
1254 s5p_mfc_unconfigure_common_memory(mfc_dev);
1255 else
1256 s5p_mfc_unconfigure_2port_memory(mfc_dev);
1257 }
1258
1259 /* MFC probe function */
1260 static int s5p_mfc_probe(struct platform_device *pdev)
1261 {
1262 struct s5p_mfc_dev *dev;
1263 struct video_device *vfd;
1264 struct resource *res;
1265 int ret;
1266
1267 pr_debug("%s++\n", __func__);
1268 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
1269 if (!dev)
1270 return -ENOMEM;
1271
1272 spin_lock_init(&dev->irqlock);
1273 spin_lock_init(&dev->condlock);
1274 dev->plat_dev = pdev;
1275 if (!dev->plat_dev) {
1276 dev_err(&pdev->dev, "No platform data specified\n");
1277 return -ENODEV;
1278 }
1279
1280 dev->variant = of_device_get_match_data(&pdev->dev);
1281
1282 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1283 dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
1284 if (IS_ERR(dev->regs_base))
1285 return PTR_ERR(dev->regs_base);
1286
1287 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1288 if (!res) {
1289 dev_err(&pdev->dev, "failed to get irq resource\n");
1290 return -ENOENT;
1291 }
1292 dev->irq = res->start;
1293 ret = devm_request_irq(&pdev->dev, dev->irq, s5p_mfc_irq,
1294 0, pdev->name, dev);
1295 if (ret) {
1296 dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret);
1297 return ret;
1298 }
1299
1300 ret = s5p_mfc_configure_dma_memory(dev);
1301 if (ret < 0) {
1302 dev_err(&pdev->dev, "failed to configure DMA memory\n");
1303 return ret;
1304 }
1305
1306 ret = s5p_mfc_init_pm(dev);
1307 if (ret < 0) {
1308 dev_err(&pdev->dev, "failed to get mfc clock source\n");
1309 goto err_dma;
1310 }
1311
1312 /*
1313 * Load fails if fs isn't mounted. Try loading anyway.
1314 * _open() will load it, it it fails now. Ignore failure.
1315 */
1316 s5p_mfc_load_firmware(dev);
1317
1318 mutex_init(&dev->mfc_mutex);
1319 init_waitqueue_head(&dev->queue);
1320 dev->hw_lock = 0;
1321 INIT_WORK(&dev->watchdog_work, s5p_mfc_watchdog_worker);
1322 atomic_set(&dev->watchdog_cnt, 0);
1323 timer_setup(&dev->watchdog_timer, s5p_mfc_watchdog, 0);
1324
1325 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
1326 if (ret)
1327 goto err_v4l2_dev_reg;
1328
1329 /* decoder */
1330 vfd = video_device_alloc();
1331 if (!vfd) {
1332 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
1333 ret = -ENOMEM;
1334 goto err_dec_alloc;
1335 }
1336 vfd->fops = &s5p_mfc_fops;
1337 vfd->ioctl_ops = get_dec_v4l2_ioctl_ops();
1338 vfd->release = video_device_release;
1339 vfd->lock = &dev->mfc_mutex;
1340 vfd->v4l2_dev = &dev->v4l2_dev;
1341 vfd->vfl_dir = VFL_DIR_M2M;
1342 snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_DEC_NAME);
1343 dev->vfd_dec = vfd;
1344 video_set_drvdata(vfd, dev);
1345
1346 /* encoder */
1347 vfd = video_device_alloc();
1348 if (!vfd) {
1349 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
1350 ret = -ENOMEM;
1351 goto err_enc_alloc;
1352 }
1353 vfd->fops = &s5p_mfc_fops;
1354 vfd->ioctl_ops = get_enc_v4l2_ioctl_ops();
1355 vfd->release = video_device_release;
1356 vfd->lock = &dev->mfc_mutex;
1357 vfd->v4l2_dev = &dev->v4l2_dev;
1358 vfd->vfl_dir = VFL_DIR_M2M;
1359 snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_ENC_NAME);
1360 dev->vfd_enc = vfd;
1361 video_set_drvdata(vfd, dev);
1362 platform_set_drvdata(pdev, dev);
1363
1364 /* Initialize HW ops and commands based on MFC version */
1365 s5p_mfc_init_hw_ops(dev);
1366 s5p_mfc_init_hw_cmds(dev);
1367 s5p_mfc_init_regs(dev);
1368
1369 /* Register decoder and encoder */
1370 ret = video_register_device(dev->vfd_dec, VFL_TYPE_GRABBER, 0);
1371 if (ret) {
1372 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1373 goto err_dec_reg;
1374 }
1375 v4l2_info(&dev->v4l2_dev,
1376 "decoder registered as /dev/video%d\n", dev->vfd_dec->num);
1377
1378 ret = video_register_device(dev->vfd_enc, VFL_TYPE_GRABBER, 0);
1379 if (ret) {
1380 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1381 goto err_enc_reg;
1382 }
1383 v4l2_info(&dev->v4l2_dev,
1384 "encoder registered as /dev/video%d\n", dev->vfd_enc->num);
1385
1386 pr_debug("%s--\n", __func__);
1387 return 0;
1388
1389 /* Deinit MFC if probe had failed */
1390 err_enc_reg:
1391 video_unregister_device(dev->vfd_dec);
1392 err_dec_reg:
1393 video_device_release(dev->vfd_enc);
1394 err_enc_alloc:
1395 video_device_release(dev->vfd_dec);
1396 err_dec_alloc:
1397 v4l2_device_unregister(&dev->v4l2_dev);
1398 err_v4l2_dev_reg:
1399 s5p_mfc_final_pm(dev);
1400 err_dma:
1401 s5p_mfc_unconfigure_dma_memory(dev);
1402
1403 pr_debug("%s-- with error\n", __func__);
1404 return ret;
1405
1406 }
1407
1408 /* Remove the driver */
1409 static int s5p_mfc_remove(struct platform_device *pdev)
1410 {
1411 struct s5p_mfc_dev *dev = platform_get_drvdata(pdev);
1412 struct s5p_mfc_ctx *ctx;
1413 int i;
1414
1415 v4l2_info(&dev->v4l2_dev, "Removing %s\n", pdev->name);
1416
1417 /*
1418 * Clear ctx dev pointer to avoid races between s5p_mfc_remove()
1419 * and s5p_mfc_release() and s5p_mfc_release() accessing ctx->dev
1420 * after s5p_mfc_remove() is run during unbind.
1421 */
1422 mutex_lock(&dev->mfc_mutex);
1423 for (i = 0; i < MFC_NUM_CONTEXTS; i++) {
1424 ctx = dev->ctx[i];
1425 if (!ctx)
1426 continue;
1427 /* clear ctx->dev */
1428 ctx->dev = NULL;
1429 }
1430 mutex_unlock(&dev->mfc_mutex);
1431
1432 del_timer_sync(&dev->watchdog_timer);
1433 flush_work(&dev->watchdog_work);
1434
1435 video_unregister_device(dev->vfd_enc);
1436 video_unregister_device(dev->vfd_dec);
1437 video_device_release(dev->vfd_enc);
1438 video_device_release(dev->vfd_dec);
1439 v4l2_device_unregister(&dev->v4l2_dev);
1440 s5p_mfc_unconfigure_dma_memory(dev);
1441
1442 s5p_mfc_final_pm(dev);
1443 return 0;
1444 }
1445
1446 #ifdef CONFIG_PM_SLEEP
1447
1448 static int s5p_mfc_suspend(struct device *dev)
1449 {
1450 struct platform_device *pdev = to_platform_device(dev);
1451 struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
1452 int ret;
1453
1454 if (m_dev->num_inst == 0)
1455 return 0;
1456
1457 if (test_and_set_bit(0, &m_dev->enter_suspend) != 0) {
1458 mfc_err("Error: going to suspend for a second time\n");
1459 return -EIO;
1460 }
1461
1462 /* Check if we're processing then wait if it necessary. */
1463 while (test_and_set_bit(0, &m_dev->hw_lock) != 0) {
1464 /* Try and lock the HW */
1465 /* Wait on the interrupt waitqueue */
1466 ret = wait_event_interruptible_timeout(m_dev->queue,
1467 m_dev->int_cond, msecs_to_jiffies(MFC_INT_TIMEOUT));
1468 if (ret == 0) {
1469 mfc_err("Waiting for hardware to finish timed out\n");
1470 clear_bit(0, &m_dev->enter_suspend);
1471 return -EIO;
1472 }
1473 }
1474
1475 ret = s5p_mfc_sleep(m_dev);
1476 if (ret) {
1477 clear_bit(0, &m_dev->enter_suspend);
1478 clear_bit(0, &m_dev->hw_lock);
1479 }
1480 return ret;
1481 }
1482
1483 static int s5p_mfc_resume(struct device *dev)
1484 {
1485 struct platform_device *pdev = to_platform_device(dev);
1486 struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
1487
1488 if (m_dev->num_inst == 0)
1489 return 0;
1490 return s5p_mfc_wakeup(m_dev);
1491 }
1492 #endif
1493
1494 /* Power management */
1495 static const struct dev_pm_ops s5p_mfc_pm_ops = {
1496 SET_SYSTEM_SLEEP_PM_OPS(s5p_mfc_suspend, s5p_mfc_resume)
1497 };
1498
1499 static struct s5p_mfc_buf_size_v5 mfc_buf_size_v5 = {
1500 .h264_ctx = MFC_H264_CTX_BUF_SIZE,
1501 .non_h264_ctx = MFC_CTX_BUF_SIZE,
1502 .dsc = DESC_BUF_SIZE,
1503 .shm = SHARED_BUF_SIZE,
1504 };
1505
1506 static struct s5p_mfc_buf_size buf_size_v5 = {
1507 .fw = MAX_FW_SIZE,
1508 .cpb = MAX_CPB_SIZE,
1509 .priv = &mfc_buf_size_v5,
1510 };
1511
1512 static struct s5p_mfc_variant mfc_drvdata_v5 = {
1513 .version = MFC_VERSION,
1514 .version_bit = MFC_V5_BIT,
1515 .port_num = MFC_NUM_PORTS,
1516 .buf_size = &buf_size_v5,
1517 .fw_name[0] = "s5p-mfc.fw",
1518 .clk_names = {"mfc", "sclk_mfc"},
1519 .num_clocks = 2,
1520 .use_clock_gating = true,
1521 };
1522
1523 static struct s5p_mfc_buf_size_v6 mfc_buf_size_v6 = {
1524 .dev_ctx = MFC_CTX_BUF_SIZE_V6,
1525 .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V6,
1526 .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V6,
1527 .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V6,
1528 .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V6,
1529 };
1530
1531 static struct s5p_mfc_buf_size buf_size_v6 = {
1532 .fw = MAX_FW_SIZE_V6,
1533 .cpb = MAX_CPB_SIZE_V6,
1534 .priv = &mfc_buf_size_v6,
1535 };
1536
1537 static struct s5p_mfc_variant mfc_drvdata_v6 = {
1538 .version = MFC_VERSION_V6,
1539 .version_bit = MFC_V6_BIT,
1540 .port_num = MFC_NUM_PORTS_V6,
1541 .buf_size = &buf_size_v6,
1542 .fw_name[0] = "s5p-mfc-v6.fw",
1543 /*
1544 * v6-v2 firmware contains bug fixes and interface change
1545 * for init buffer command
1546 */
1547 .fw_name[1] = "s5p-mfc-v6-v2.fw",
1548 .clk_names = {"mfc"},
1549 .num_clocks = 1,
1550 };
1551
1552 static struct s5p_mfc_buf_size_v6 mfc_buf_size_v7 = {
1553 .dev_ctx = MFC_CTX_BUF_SIZE_V7,
1554 .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V7,
1555 .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V7,
1556 .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V7,
1557 .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V7,
1558 };
1559
1560 static struct s5p_mfc_buf_size buf_size_v7 = {
1561 .fw = MAX_FW_SIZE_V7,
1562 .cpb = MAX_CPB_SIZE_V7,
1563 .priv = &mfc_buf_size_v7,
1564 };
1565
1566 static struct s5p_mfc_variant mfc_drvdata_v7 = {
1567 .version = MFC_VERSION_V7,
1568 .version_bit = MFC_V7_BIT,
1569 .port_num = MFC_NUM_PORTS_V7,
1570 .buf_size = &buf_size_v7,
1571 .fw_name[0] = "s5p-mfc-v7.fw",
1572 .clk_names = {"mfc", "sclk_mfc"},
1573 .num_clocks = 2,
1574 };
1575
1576 static struct s5p_mfc_buf_size_v6 mfc_buf_size_v8 = {
1577 .dev_ctx = MFC_CTX_BUF_SIZE_V8,
1578 .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V8,
1579 .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V8,
1580 .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V8,
1581 .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V8,
1582 };
1583
1584 static struct s5p_mfc_buf_size buf_size_v8 = {
1585 .fw = MAX_FW_SIZE_V8,
1586 .cpb = MAX_CPB_SIZE_V8,
1587 .priv = &mfc_buf_size_v8,
1588 };
1589
1590 static struct s5p_mfc_variant mfc_drvdata_v8 = {
1591 .version = MFC_VERSION_V8,
1592 .version_bit = MFC_V8_BIT,
1593 .port_num = MFC_NUM_PORTS_V8,
1594 .buf_size = &buf_size_v8,
1595 .fw_name[0] = "s5p-mfc-v8.fw",
1596 .clk_names = {"mfc"},
1597 .num_clocks = 1,
1598 };
1599
1600 static struct s5p_mfc_variant mfc_drvdata_v8_5433 = {
1601 .version = MFC_VERSION_V8,
1602 .version_bit = MFC_V8_BIT,
1603 .port_num = MFC_NUM_PORTS_V8,
1604 .buf_size = &buf_size_v8,
1605 .fw_name[0] = "s5p-mfc-v8.fw",
1606 .clk_names = {"pclk", "aclk", "aclk_xiu"},
1607 .num_clocks = 3,
1608 };
1609
1610 static const struct of_device_id exynos_mfc_match[] = {
1611 {
1612 .compatible = "samsung,mfc-v5",
1613 .data = &mfc_drvdata_v5,
1614 }, {
1615 .compatible = "samsung,mfc-v6",
1616 .data = &mfc_drvdata_v6,
1617 }, {
1618 .compatible = "samsung,mfc-v7",
1619 .data = &mfc_drvdata_v7,
1620 }, {
1621 .compatible = "samsung,mfc-v8",
1622 .data = &mfc_drvdata_v8,
1623 }, {
1624 .compatible = "samsung,exynos5433-mfc",
1625 .data = &mfc_drvdata_v8_5433,
1626 },
1627 {},
1628 };
1629 MODULE_DEVICE_TABLE(of, exynos_mfc_match);
1630
1631 static struct platform_driver s5p_mfc_driver = {
1632 .probe = s5p_mfc_probe,
1633 .remove = s5p_mfc_remove,
1634 .driver = {
1635 .name = S5P_MFC_NAME,
1636 .pm = &s5p_mfc_pm_ops,
1637 .of_match_table = exynos_mfc_match,
1638 },
1639 };
1640
1641 module_platform_driver(s5p_mfc_driver);
1642
1643 MODULE_LICENSE("GPL");
1644 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
1645 MODULE_DESCRIPTION("Samsung S5P Multi Format Codec V4L2 driver");
1646
CRIS linux kernel tree