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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / drivers / media / video / s5p-mfc / s5p_mfc.c
blob7dc7eab58b387e1bd4c2711ed32f9d1259913bfc
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/version.h>
22 #include <linux/videodev2.h>
23 #include <linux/workqueue.h>
24 #include <media/videobuf2-core.h>
25 #include "regs-mfc.h"
26 #include "s5p_mfc_ctrl.h"
27 #include "s5p_mfc_debug.h"
28 #include "s5p_mfc_dec.h"
29 #include "s5p_mfc_enc.h"
30 #include "s5p_mfc_intr.h"
31 #include "s5p_mfc_opr.h"
32 #include "s5p_mfc_pm.h"
33 #include "s5p_mfc_shm.h"
34
35 #define S5P_MFC_NAME "s5p-mfc"
36 #define S5P_MFC_DEC_NAME "s5p-mfc-dec"
37 #define S5P_MFC_ENC_NAME "s5p-mfc-enc"
38
39 int debug;
40 module_param(debug, int, S_IRUGO | S_IWUSR);
41 MODULE_PARM_DESC(debug, "Debug level - higher value produces more verbose messages");
42
43 /* Helper functions for interrupt processing */
44 /* Remove from hw execution round robin */
45 static void clear_work_bit(struct s5p_mfc_ctx *ctx)
46 {
47 struct s5p_mfc_dev *dev = ctx->dev;
48
49 spin_lock(&dev->condlock);
50 clear_bit(ctx->num, &dev->ctx_work_bits);
51 spin_unlock(&dev->condlock);
52 }
53
54 /* Wake up context wait_queue */
55 static void wake_up_ctx(struct s5p_mfc_ctx *ctx, unsigned int reason,
56 unsigned int err)
57 {
58 ctx->int_cond = 1;
59 ctx->int_type = reason;
60 ctx->int_err = err;
61 wake_up(&ctx->queue);
62 }
63
64 /* Wake up device wait_queue */
65 static void wake_up_dev(struct s5p_mfc_dev *dev, unsigned int reason,
66 unsigned int err)
67 {
68 dev->int_cond = 1;
69 dev->int_type = reason;
70 dev->int_err = err;
71 wake_up(&dev->queue);
72 }
73
74 void s5p_mfc_watchdog(unsigned long arg)
75 {
76 struct s5p_mfc_dev *dev = (struct s5p_mfc_dev *)arg;
77
78 if (test_bit(0, &dev->hw_lock))
79 atomic_inc(&dev->watchdog_cnt);
80 if (atomic_read(&dev->watchdog_cnt) >= MFC_WATCHDOG_CNT) {
81 /* This means that hw is busy and no interrupts were
82 * generated by hw for the Nth time of running this
83 * watchdog timer. This usually means a serious hw
84 * error. Now it is time to kill all instances and
85 * reset the MFC. */
86 mfc_err("Time out during waiting for HW\n");
87 queue_work(dev->watchdog_workqueue, &dev->watchdog_work);
88 }
89 dev->watchdog_timer.expires = jiffies +
90 msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
91 add_timer(&dev->watchdog_timer);
92 }
93
94 static void s5p_mfc_watchdog_worker(struct work_struct *work)
95 {
96 struct s5p_mfc_dev *dev;
97 struct s5p_mfc_ctx *ctx;
98 unsigned long flags;
99 int mutex_locked;
100 int i, ret;
101
102 dev = container_of(work, struct s5p_mfc_dev, watchdog_work);
103
104 mfc_err("Driver timeout error handling\n");
105 /* Lock the mutex that protects open and release.
106 * This is necessary as they may load and unload firmware. */
107 mutex_locked = mutex_trylock(&dev->mfc_mutex);
108 if (!mutex_locked)
109 mfc_err("Error: some instance may be closing/opening\n");
110 spin_lock_irqsave(&dev->irqlock, flags);
111
112 s5p_mfc_clock_off();
113
114 for (i = 0; i < MFC_NUM_CONTEXTS; i++) {
115 ctx = dev->ctx[i];
116 if (!ctx)
117 continue;
118 ctx->state = MFCINST_ERROR;
119 s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst);
120 s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src);
121 clear_work_bit(ctx);
122 wake_up_ctx(ctx, S5P_FIMV_R2H_CMD_ERR_RET, 0);
123 }
124 clear_bit(0, &dev->hw_lock);
125 spin_unlock_irqrestore(&dev->irqlock, flags);
126 /* Double check if there is at least one instance running.
127 * If no instance is in memory than no firmware should be present */
128 if (dev->num_inst > 0) {
129 ret = s5p_mfc_reload_firmware(dev);
130 if (ret) {
131 mfc_err("Failed to reload FW\n");
132 goto unlock;
133 }
134 s5p_mfc_clock_on();
135 ret = s5p_mfc_init_hw(dev);
136 if (ret)
137 mfc_err("Failed to reinit FW\n");
138 }
139 unlock:
140 if (mutex_locked)
141 mutex_unlock(&dev->mfc_mutex);
142 }
143
144 static enum s5p_mfc_node_type s5p_mfc_get_node_type(struct file *file)
145 {
146 struct video_device *vdev = video_devdata(file);
147
148 if (!vdev) {
149 mfc_err("failed to get video_device");
150 return MFCNODE_INVALID;
151 }
152 if (vdev->index == 0)
153 return MFCNODE_DECODER;
154 else if (vdev->index == 1)
155 return MFCNODE_ENCODER;
156 return MFCNODE_INVALID;
157 }
158
159 static void s5p_mfc_clear_int_flags(struct s5p_mfc_dev *dev)
160 {
161 mfc_write(dev, 0, S5P_FIMV_RISC_HOST_INT);
162 mfc_write(dev, 0, S5P_FIMV_RISC2HOST_CMD);
163 mfc_write(dev, 0xffff, S5P_FIMV_SI_RTN_CHID);
164 }
165
166 static void s5p_mfc_handle_frame_all_extracted(struct s5p_mfc_ctx *ctx)
167 {
168 struct s5p_mfc_buf *dst_buf;
169
170 ctx->state = MFCINST_FINISHED;
171 ctx->sequence++;
172 while (!list_empty(&ctx->dst_queue)) {
173 dst_buf = list_entry(ctx->dst_queue.next,
174 struct s5p_mfc_buf, list);
175 mfc_debug(2, "Cleaning up buffer: %d\n",
176 dst_buf->b->v4l2_buf.index);
177 vb2_set_plane_payload(dst_buf->b, 0, 0);
178 vb2_set_plane_payload(dst_buf->b, 1, 0);
179 list_del(&dst_buf->list);
180 ctx->dst_queue_cnt--;
181 dst_buf->b->v4l2_buf.sequence = (ctx->sequence++);
182
183 if (s5p_mfc_read_shm(ctx, PIC_TIME_TOP) ==
184 s5p_mfc_read_shm(ctx, PIC_TIME_BOT))
185 dst_buf->b->v4l2_buf.field = V4L2_FIELD_NONE;
186 else
187 dst_buf->b->v4l2_buf.field = V4L2_FIELD_INTERLACED;
188
189 ctx->dec_dst_flag &= ~(1 << dst_buf->b->v4l2_buf.index);
190 vb2_buffer_done(dst_buf->b, VB2_BUF_STATE_DONE);
191 }
192 }
193
194 static void s5p_mfc_handle_frame_copy_time(struct s5p_mfc_ctx *ctx)
195 {
196 struct s5p_mfc_dev *dev = ctx->dev;
197 struct s5p_mfc_buf *dst_buf, *src_buf;
198 size_t dec_y_addr = s5p_mfc_get_dec_y_adr();
199 unsigned int frame_type = s5p_mfc_get_frame_type();
200
201 /* Copy timestamp / timecode from decoded src to dst and set
202 appropraite flags */
203 src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
204 list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
205 if (vb2_dma_contig_plane_paddr(dst_buf->b, 0) == dec_y_addr) {
206 memcpy(&dst_buf->b->v4l2_buf.timecode,
207 &src_buf->b->v4l2_buf.timecode,
208 sizeof(struct v4l2_timecode));
209 memcpy(&dst_buf->b->v4l2_buf.timestamp,
210 &src_buf->b->v4l2_buf.timestamp,
211 sizeof(struct timeval));
212 switch (frame_type) {
213 case S5P_FIMV_DECODE_FRAME_I_FRAME:
214 dst_buf->b->v4l2_buf.flags |=
215 V4L2_BUF_FLAG_KEYFRAME;
216 break;
217 case S5P_FIMV_DECODE_FRAME_P_FRAME:
218 dst_buf->b->v4l2_buf.flags |=
219 V4L2_BUF_FLAG_PFRAME;
220 break;
221 case S5P_FIMV_DECODE_FRAME_B_FRAME:
222 dst_buf->b->v4l2_buf.flags |=
223 V4L2_BUF_FLAG_BFRAME;
224 break;
225 }
226 break;
227 }
228 }
229 }
230
231 static void s5p_mfc_handle_frame_new(struct s5p_mfc_ctx *ctx, unsigned int err)
232 {
233 struct s5p_mfc_dev *dev = ctx->dev;
234 struct s5p_mfc_buf *dst_buf;
235 size_t dspl_y_addr = s5p_mfc_get_dspl_y_adr();
236 unsigned int frame_type = s5p_mfc_get_frame_type();
237 unsigned int index;
238
239 /* If frame is same as previous then skip and do not dequeue */
240 if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) {
241 if (!ctx->after_packed_pb)
242 ctx->sequence++;
243 ctx->after_packed_pb = 0;
244 return;
245 }
246 ctx->sequence++;
247 /* The MFC returns address of the buffer, now we have to
248 * check which videobuf does it correspond to */
249 list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
250 /* Check if this is the buffer we're looking for */
251 if (vb2_dma_contig_plane_paddr(dst_buf->b, 0) == dspl_y_addr) {
252 list_del(&dst_buf->list);
253 ctx->dst_queue_cnt--;
254 dst_buf->b->v4l2_buf.sequence = ctx->sequence;
255 if (s5p_mfc_read_shm(ctx, PIC_TIME_TOP) ==
256 s5p_mfc_read_shm(ctx, PIC_TIME_BOT))
257 dst_buf->b->v4l2_buf.field = V4L2_FIELD_NONE;
258 else
259 dst_buf->b->v4l2_buf.field =
260 V4L2_FIELD_INTERLACED;
261 vb2_set_plane_payload(dst_buf->b, 0, ctx->luma_size);
262 vb2_set_plane_payload(dst_buf->b, 1, ctx->chroma_size);
263 clear_bit(dst_buf->b->v4l2_buf.index,
264 &ctx->dec_dst_flag);
265
266 vb2_buffer_done(dst_buf->b,
267 err ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
268
269 index = dst_buf->b->v4l2_buf.index;
270 break;
271 }
272 }
273 }
274
275 /* Handle frame decoding interrupt */
276 static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx,
277 unsigned int reason, unsigned int err)
278 {
279 struct s5p_mfc_dev *dev = ctx->dev;
280 unsigned int dst_frame_status;
281 struct s5p_mfc_buf *src_buf;
282 unsigned long flags;
283 unsigned int res_change;
284
285 unsigned int index;
286
287 dst_frame_status = s5p_mfc_get_dspl_status()
288 & S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK;
289 res_change = s5p_mfc_get_dspl_status()
290 & S5P_FIMV_DEC_STATUS_RESOLUTION_MASK;
291 mfc_debug(2, "Frame Status: %x\n", dst_frame_status);
292 if (ctx->state == MFCINST_RES_CHANGE_INIT)
293 ctx->state = MFCINST_RES_CHANGE_FLUSH;
294 if (res_change) {
295 ctx->state = MFCINST_RES_CHANGE_INIT;
296 s5p_mfc_clear_int_flags(dev);
297 wake_up_ctx(ctx, reason, err);
298 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
299 BUG();
300 s5p_mfc_clock_off();
301 s5p_mfc_try_run(dev);
302 return;
303 }
304 if (ctx->dpb_flush_flag)
305 ctx->dpb_flush_flag = 0;
306
307 spin_lock_irqsave(&dev->irqlock, flags);
308 /* All frames remaining in the buffer have been extracted */
309 if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_EMPTY) {
310 if (ctx->state == MFCINST_RES_CHANGE_FLUSH) {
311 s5p_mfc_handle_frame_all_extracted(ctx);
312 ctx->state = MFCINST_RES_CHANGE_END;
313 goto leave_handle_frame;
314 } else {
315 s5p_mfc_handle_frame_all_extracted(ctx);
316 }
317 }
318
319 if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY ||
320 dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_ONLY)
321 s5p_mfc_handle_frame_copy_time(ctx);
322
323 /* A frame has been decoded and is in the buffer */
324 if (dst_frame_status == S5P_FIMV_DEC_STATUS_DISPLAY_ONLY ||
325 dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY) {
326 s5p_mfc_handle_frame_new(ctx, err);
327 } else {
328 mfc_debug(2, "No frame decode\n");
329 }
330 /* Mark source buffer as complete */
331 if (dst_frame_status != S5P_FIMV_DEC_STATUS_DISPLAY_ONLY
332 && !list_empty(&ctx->src_queue)) {
333 src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf,
334 list);
335 ctx->consumed_stream += s5p_mfc_get_consumed_stream();
336 if (ctx->codec_mode != S5P_FIMV_CODEC_H264_DEC &&
337 s5p_mfc_get_frame_type() == S5P_FIMV_DECODE_FRAME_P_FRAME
338 && ctx->consumed_stream + STUFF_BYTE <
339 src_buf->b->v4l2_planes[0].bytesused) {
340 /* Run MFC again on the same buffer */
341 mfc_debug(2, "Running again the same buffer\n");
342 ctx->after_packed_pb = 1;
343 } else {
344 index = src_buf->b->v4l2_buf.index;
345 mfc_debug(2, "MFC needs next buffer\n");
346 ctx->consumed_stream = 0;
347 list_del(&src_buf->list);
348 ctx->src_queue_cnt--;
349 if (s5p_mfc_err_dec(err) > 0)
350 vb2_buffer_done(src_buf->b, VB2_BUF_STATE_ERROR);
351 else
352 vb2_buffer_done(src_buf->b, VB2_BUF_STATE_DONE);
353 }
354 }
355 leave_handle_frame:
356 spin_unlock_irqrestore(&dev->irqlock, flags);
357 if ((ctx->src_queue_cnt == 0 && ctx->state != MFCINST_FINISHING)
358 || ctx->dst_queue_cnt < ctx->dpb_count)
359 clear_work_bit(ctx);
360 s5p_mfc_clear_int_flags(dev);
361 wake_up_ctx(ctx, reason, err);
362 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
363 BUG();
364 s5p_mfc_clock_off();
365 s5p_mfc_try_run(dev);
366 }
367
368 /* Error handling for interrupt */
369 static void s5p_mfc_handle_error(struct s5p_mfc_ctx *ctx,
370 unsigned int reason, unsigned int err)
371 {
372 struct s5p_mfc_dev *dev;
373 unsigned long flags;
374
375 /* If no context is available then all necessary
376 * processing has been done. */
377 if (ctx == 0)
378 return;
379
380 dev = ctx->dev;
381 mfc_err("Interrupt Error: %08x\n", err);
382 s5p_mfc_clear_int_flags(dev);
383 wake_up_dev(dev, reason, err);
384
385 /* Error recovery is dependent on the state of context */
386 switch (ctx->state) {
387 case MFCINST_INIT:
388 /* This error had to happen while acquireing instance */
389 case MFCINST_GOT_INST:
390 /* This error had to happen while parsing the header */
391 case MFCINST_HEAD_PARSED:
392 /* This error had to happen while setting dst buffers */
393 case MFCINST_RETURN_INST:
394 /* This error had to happen while releasing instance */
395 clear_work_bit(ctx);
396 wake_up_ctx(ctx, reason, err);
397 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
398 BUG();
399 s5p_mfc_clock_off();
400 ctx->state = MFCINST_ERROR;
401 break;
402 case MFCINST_FINISHING:
403 case MFCINST_FINISHED:
404 case MFCINST_RUNNING:
405 /* It is higly probable that an error occured
406 * while decoding a frame */
407 clear_work_bit(ctx);
408 ctx->state = MFCINST_ERROR;
409 /* Mark all dst buffers as having an error */
410 spin_lock_irqsave(&dev->irqlock, flags);
411 s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst);
412 /* Mark all src buffers as having an error */
413 s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src);
414 spin_unlock_irqrestore(&dev->irqlock, flags);
415 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
416 BUG();
417 s5p_mfc_clock_off();
418 break;
419 default:
420 mfc_err("Encountered an error interrupt which had not been handled\n");
421 break;
422 }
423 return;
424 }
425
426 /* Header parsing interrupt handling */
427 static void s5p_mfc_handle_seq_done(struct s5p_mfc_ctx *ctx,
428 unsigned int reason, unsigned int err)
429 {
430 struct s5p_mfc_dev *dev;
431 unsigned int guard_width, guard_height;
432
433 if (ctx == 0)
434 return;
435 dev = ctx->dev;
436 if (ctx->c_ops->post_seq_start) {
437 if (ctx->c_ops->post_seq_start(ctx))
438 mfc_err("post_seq_start() failed\n");
439 } else {
440 ctx->img_width = s5p_mfc_get_img_width();
441 ctx->img_height = s5p_mfc_get_img_height();
442
443 ctx->buf_width = ALIGN(ctx->img_width,
444 S5P_FIMV_NV12MT_HALIGN);
445 ctx->buf_height = ALIGN(ctx->img_height,
446 S5P_FIMV_NV12MT_VALIGN);
447 mfc_debug(2, "SEQ Done: Movie dimensions %dx%d, "
448 "buffer dimensions: %dx%d\n", ctx->img_width,
449 ctx->img_height, ctx->buf_width,
450 ctx->buf_height);
451 if (ctx->codec_mode == S5P_FIMV_CODEC_H264_DEC) {
452 ctx->luma_size = ALIGN(ctx->buf_width *
453 ctx->buf_height, S5P_FIMV_DEC_BUF_ALIGN);
454 ctx->chroma_size = ALIGN(ctx->buf_width *
455 ALIGN((ctx->img_height >> 1),
456 S5P_FIMV_NV12MT_VALIGN),
457 S5P_FIMV_DEC_BUF_ALIGN);
458 ctx->mv_size = ALIGN(ctx->buf_width *
459 ALIGN((ctx->buf_height >> 2),
460 S5P_FIMV_NV12MT_VALIGN),
461 S5P_FIMV_DEC_BUF_ALIGN);
462 } else {
463 guard_width = ALIGN(ctx->img_width + 24,
464 S5P_FIMV_NV12MT_HALIGN);
465 guard_height = ALIGN(ctx->img_height + 16,
466 S5P_FIMV_NV12MT_VALIGN);
467 ctx->luma_size = ALIGN(guard_width *
468 guard_height, S5P_FIMV_DEC_BUF_ALIGN);
469 guard_width = ALIGN(ctx->img_width + 16,
470 S5P_FIMV_NV12MT_HALIGN);
471 guard_height = ALIGN((ctx->img_height >> 1) + 4,
472 S5P_FIMV_NV12MT_VALIGN);
473 ctx->chroma_size = ALIGN(guard_width *
474 guard_height, S5P_FIMV_DEC_BUF_ALIGN);
475 ctx->mv_size = 0;
476 }
477 ctx->dpb_count = s5p_mfc_get_dpb_count();
478 if (ctx->img_width == 0 || ctx->img_width == 0)
479 ctx->state = MFCINST_ERROR;
480 else
481 ctx->state = MFCINST_HEAD_PARSED;
482 }
483 s5p_mfc_clear_int_flags(dev);
484 clear_work_bit(ctx);
485 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
486 BUG();
487 s5p_mfc_clock_off();
488 s5p_mfc_try_run(dev);
489 wake_up_ctx(ctx, reason, err);
490 }
491
492 /* Header parsing interrupt handling */
493 static void s5p_mfc_handle_init_buffers(struct s5p_mfc_ctx *ctx,
494 unsigned int reason, unsigned int err)
495 {
496 struct s5p_mfc_buf *src_buf;
497 struct s5p_mfc_dev *dev;
498 unsigned long flags;
499
500 if (ctx == 0)
501 return;
502 dev = ctx->dev;
503 s5p_mfc_clear_int_flags(dev);
504 ctx->int_type = reason;
505 ctx->int_err = err;
506 ctx->int_cond = 1;
507 spin_lock(&dev->condlock);
508 clear_bit(ctx->num, &dev->ctx_work_bits);
509 spin_unlock(&dev->condlock);
510 if (err == 0) {
511 ctx->state = MFCINST_RUNNING;
512 if (!ctx->dpb_flush_flag) {
513 spin_lock_irqsave(&dev->irqlock, flags);
514 if (!list_empty(&ctx->src_queue)) {
515 src_buf = list_entry(ctx->src_queue.next,
516 struct s5p_mfc_buf, list);
517 list_del(&src_buf->list);
518 ctx->src_queue_cnt--;
519 vb2_buffer_done(src_buf->b,
520 VB2_BUF_STATE_DONE);
521 }
522 spin_unlock_irqrestore(&dev->irqlock, flags);
523 } else {
524 ctx->dpb_flush_flag = 0;
525 }
526 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
527 BUG();
528
529 s5p_mfc_clock_off();
530
531 wake_up(&ctx->queue);
532 s5p_mfc_try_run(dev);
533 } else {
534 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
535 BUG();
536
537 s5p_mfc_clock_off();
538
539 wake_up(&ctx->queue);
540 }
541 }
542
543 /* Interrupt processing */
544 static irqreturn_t s5p_mfc_irq(int irq, void *priv)
545 {
546 struct s5p_mfc_dev *dev = priv;
547 struct s5p_mfc_ctx *ctx;
548 unsigned int reason;
549 unsigned int err;
550
551 mfc_debug_enter();
552 /* Reset the timeout watchdog */
553 atomic_set(&dev->watchdog_cnt, 0);
554 ctx = dev->ctx[dev->curr_ctx];
555 /* Get the reason of interrupt and the error code */
556 reason = s5p_mfc_get_int_reason();
557 err = s5p_mfc_get_int_err();
558 mfc_debug(1, "Int reason: %d (err: %08x)\n", reason, err);
559 switch (reason) {
560 case S5P_FIMV_R2H_CMD_ERR_RET:
561 /* An error has occured */
562 if (ctx->state == MFCINST_RUNNING &&
563 s5p_mfc_err_dec(err) >= S5P_FIMV_ERR_WARNINGS_START)
564 s5p_mfc_handle_frame(ctx, reason, err);
565 else
566 s5p_mfc_handle_error(ctx, reason, err);
567 clear_bit(0, &dev->enter_suspend);
568 break;
569
570 case S5P_FIMV_R2H_CMD_SLICE_DONE_RET:
571 case S5P_FIMV_R2H_CMD_FRAME_DONE_RET:
572 if (ctx->c_ops->post_frame_start) {
573 if (ctx->c_ops->post_frame_start(ctx))
574 mfc_err("post_frame_start() failed\n");
575 s5p_mfc_clear_int_flags(dev);
576 wake_up_ctx(ctx, reason, err);
577 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
578 BUG();
579 s5p_mfc_clock_off();
580 s5p_mfc_try_run(dev);
581 } else {
582 s5p_mfc_handle_frame(ctx, reason, err);
583 }
584 break;
585
586 case S5P_FIMV_R2H_CMD_SEQ_DONE_RET:
587 s5p_mfc_handle_seq_done(ctx, reason, err);
588 break;
589
590 case S5P_FIMV_R2H_CMD_OPEN_INSTANCE_RET:
591 ctx->inst_no = s5p_mfc_get_inst_no();
592 ctx->state = MFCINST_GOT_INST;
593 clear_work_bit(ctx);
594 wake_up(&ctx->queue);
595 goto irq_cleanup_hw;
596
597 case S5P_FIMV_R2H_CMD_CLOSE_INSTANCE_RET:
598 clear_work_bit(ctx);
599 ctx->state = MFCINST_FREE;
600 wake_up(&ctx->queue);
601 goto irq_cleanup_hw;
602
603 case S5P_FIMV_R2H_CMD_SYS_INIT_RET:
604 case S5P_FIMV_R2H_CMD_FW_STATUS_RET:
605 case S5P_FIMV_R2H_CMD_SLEEP_RET:
606 case S5P_FIMV_R2H_CMD_WAKEUP_RET:
607 if (ctx)
608 clear_work_bit(ctx);
609 s5p_mfc_clear_int_flags(dev);
610 wake_up_dev(dev, reason, err);
611 clear_bit(0, &dev->hw_lock);
612 clear_bit(0, &dev->enter_suspend);
613 break;
614
615 case S5P_FIMV_R2H_CMD_INIT_BUFFERS_RET:
616 s5p_mfc_handle_init_buffers(ctx, reason, err);
617 break;
618 default:
619 mfc_debug(2, "Unknown int reason\n");
620 s5p_mfc_clear_int_flags(dev);
621 }
622 mfc_debug_leave();
623 return IRQ_HANDLED;
624 irq_cleanup_hw:
625 s5p_mfc_clear_int_flags(dev);
626 ctx->int_type = reason;
627 ctx->int_err = err;
628 ctx->int_cond = 1;
629 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
630 mfc_err("Failed to unlock hw\n");
631
632 s5p_mfc_clock_off();
633
634 s5p_mfc_try_run(dev);
635 mfc_debug(2, "Exit via irq_cleanup_hw\n");
636 return IRQ_HANDLED;
637 }
638
639 /* Open an MFC node */
640 static int s5p_mfc_open(struct file *file)
641 {
642 struct s5p_mfc_dev *dev = video_drvdata(file);
643 struct s5p_mfc_ctx *ctx = NULL;
644 struct vb2_queue *q;
645 unsigned long flags;
646 int ret = 0;
647
648 mfc_debug_enter();
649 dev->num_inst++; /* It is guarded by mfc_mutex in vfd */
650 /* Allocate memory for context */
651 ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
652 if (!ctx) {
653 mfc_err("Not enough memory\n");
654 ret = -ENOMEM;
655 goto err_alloc;
656 }
657 v4l2_fh_init(&ctx->fh, video_devdata(file));
658 file->private_data = &ctx->fh;
659 v4l2_fh_add(&ctx->fh);
660 ctx->dev = dev;
661 INIT_LIST_HEAD(&ctx->src_queue);
662 INIT_LIST_HEAD(&ctx->dst_queue);
663 ctx->src_queue_cnt = 0;
664 ctx->dst_queue_cnt = 0;
665 /* Get context number */
666 ctx->num = 0;
667 while (dev->ctx[ctx->num]) {
668 ctx->num++;
669 if (ctx->num >= MFC_NUM_CONTEXTS) {
670 mfc_err("Too many open contexts\n");
671 ret = -EBUSY;
672 goto err_no_ctx;
673 }
674 }
675 /* Mark context as idle */
676 spin_lock_irqsave(&dev->condlock, flags);
677 clear_bit(ctx->num, &dev->ctx_work_bits);
678 spin_unlock_irqrestore(&dev->condlock, flags);
679 dev->ctx[ctx->num] = ctx;
680 if (s5p_mfc_get_node_type(file) == MFCNODE_DECODER) {
681 ctx->type = MFCINST_DECODER;
682 ctx->c_ops = get_dec_codec_ops();
683 /* Setup ctrl handler */
684 ret = s5p_mfc_dec_ctrls_setup(ctx);
685 if (ret) {
686 mfc_err("Failed to setup mfc controls\n");
687 goto err_ctrls_setup;
688 }
689 } else if (s5p_mfc_get_node_type(file) == MFCNODE_ENCODER) {
690 ctx->type = MFCINST_ENCODER;
691 ctx->c_ops = get_enc_codec_ops();
692 /* only for encoder */
693 INIT_LIST_HEAD(&ctx->ref_queue);
694 ctx->ref_queue_cnt = 0;
695 /* Setup ctrl handler */
696 ret = s5p_mfc_enc_ctrls_setup(ctx);
697 if (ret) {
698 mfc_err("Failed to setup mfc controls\n");
699 goto err_ctrls_setup;
700 }
701 } else {
702 ret = -ENOENT;
703 goto err_bad_node;
704 }
705 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
706 ctx->inst_no = -1;
707 /* Load firmware if this is the first instance */
708 if (dev->num_inst == 1) {
709 dev->watchdog_timer.expires = jiffies +
710 msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
711 add_timer(&dev->watchdog_timer);
712 ret = s5p_mfc_power_on();
713 if (ret < 0) {
714 mfc_err("power on failed\n");
715 goto err_pwr_enable;
716 }
717 s5p_mfc_clock_on();
718 ret = s5p_mfc_alloc_and_load_firmware(dev);
719 if (ret)
720 goto err_alloc_fw;
721 /* Init the FW */
722 ret = s5p_mfc_init_hw(dev);
723 if (ret)
724 goto err_init_hw;
725 s5p_mfc_clock_off();
726 }
727 /* Init videobuf2 queue for CAPTURE */
728 q = &ctx->vq_dst;
729 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
730 q->drv_priv = &ctx->fh;
731 if (s5p_mfc_get_node_type(file) == MFCNODE_DECODER) {
732 q->io_modes = VB2_MMAP;
733 q->ops = get_dec_queue_ops();
734 } else if (s5p_mfc_get_node_type(file) == MFCNODE_ENCODER) {
735 q->io_modes = VB2_MMAP | VB2_USERPTR;
736 q->ops = get_enc_queue_ops();
737 } else {
738 ret = -ENOENT;
739 goto err_queue_init;
740 }
741 q->mem_ops = (struct vb2_mem_ops *)&vb2_dma_contig_memops;
742 ret = vb2_queue_init(q);
743 if (ret) {
744 mfc_err("Failed to initialize videobuf2 queue(capture)\n");
745 goto err_queue_init;
746 }
747 /* Init videobuf2 queue for OUTPUT */
748 q = &ctx->vq_src;
749 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
750 q->io_modes = VB2_MMAP;
751 q->drv_priv = &ctx->fh;
752 if (s5p_mfc_get_node_type(file) == MFCNODE_DECODER) {
753 q->io_modes = VB2_MMAP;
754 q->ops = get_dec_queue_ops();
755 } else if (s5p_mfc_get_node_type(file) == MFCNODE_ENCODER) {
756 q->io_modes = VB2_MMAP | VB2_USERPTR;
757 q->ops = get_enc_queue_ops();
758 } else {
759 ret = -ENOENT;
760 goto err_queue_init;
761 }
762 q->mem_ops = (struct vb2_mem_ops *)&vb2_dma_contig_memops;
763 ret = vb2_queue_init(q);
764 if (ret) {
765 mfc_err("Failed to initialize videobuf2 queue(output)\n");
766 goto err_queue_init;
767 }
768 init_waitqueue_head(&ctx->queue);
769 mfc_debug_leave();
770 return ret;
771 /* Deinit when failure occured */
772 err_queue_init:
773 err_init_hw:
774 s5p_mfc_release_firmware(dev);
775 err_alloc_fw:
776 dev->ctx[ctx->num] = 0;
777 del_timer_sync(&dev->watchdog_timer);
778 s5p_mfc_clock_off();
779 err_pwr_enable:
780 if (dev->num_inst == 1) {
781 if (s5p_mfc_power_off() < 0)
782 mfc_err("power off failed\n");
783 s5p_mfc_release_firmware(dev);
784 }
785 err_ctrls_setup:
786 s5p_mfc_dec_ctrls_delete(ctx);
787 err_bad_node:
788 err_no_ctx:
789 v4l2_fh_del(&ctx->fh);
790 v4l2_fh_exit(&ctx->fh);
791 kfree(ctx);
792 err_alloc:
793 dev->num_inst--;
794 mfc_debug_leave();
795 return ret;
796 }
797
798 /* Release MFC context */
799 static int s5p_mfc_release(struct file *file)
800 {
801 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
802 struct s5p_mfc_dev *dev = ctx->dev;
803 unsigned long flags;
804
805 mfc_debug_enter();
806 s5p_mfc_clock_on();
807 vb2_queue_release(&ctx->vq_src);
808 vb2_queue_release(&ctx->vq_dst);
809 /* Mark context as idle */
810 spin_lock_irqsave(&dev->condlock, flags);
811 clear_bit(ctx->num, &dev->ctx_work_bits);
812 spin_unlock_irqrestore(&dev->condlock, flags);
813 /* If instance was initialised then
814 * return instance and free reosurces */
815 if (ctx->inst_no != MFC_NO_INSTANCE_SET) {
816 mfc_debug(2, "Has to free instance\n");
817 ctx->state = MFCINST_RETURN_INST;
818 spin_lock_irqsave(&dev->condlock, flags);
819 set_bit(ctx->num, &dev->ctx_work_bits);
820 spin_unlock_irqrestore(&dev->condlock, flags);
821 s5p_mfc_clean_ctx_int_flags(ctx);
822 s5p_mfc_try_run(dev);
823 /* Wait until instance is returned or timeout occured */
824 if (s5p_mfc_wait_for_done_ctx
825 (ctx, S5P_FIMV_R2H_CMD_CLOSE_INSTANCE_RET, 0)) {
826 s5p_mfc_clock_off();
827 mfc_err("Err returning instance\n");
828 }
829 mfc_debug(2, "After free instance\n");
830 /* Free resources */
831 s5p_mfc_release_codec_buffers(ctx);
832 s5p_mfc_release_instance_buffer(ctx);
833 if (ctx->type == MFCINST_DECODER)
834 s5p_mfc_release_dec_desc_buffer(ctx);
835
836 ctx->inst_no = MFC_NO_INSTANCE_SET;
837 }
838 /* hardware locking scheme */
839 if (dev->curr_ctx == ctx->num)
840 clear_bit(0, &dev->hw_lock);
841 dev->num_inst--;
842 if (dev->num_inst == 0) {
843 mfc_debug(2, "Last instance - release firmware\n");
844 /* reset <-> F/W release */
845 s5p_mfc_reset(dev);
846 s5p_mfc_release_firmware(dev);
847 del_timer_sync(&dev->watchdog_timer);
848 if (s5p_mfc_power_off() < 0)
849 mfc_err("Power off failed\n");
850 }
851 mfc_debug(2, "Shutting down clock\n");
852 s5p_mfc_clock_off();
853 dev->ctx[ctx->num] = 0;
854 s5p_mfc_dec_ctrls_delete(ctx);
855 v4l2_fh_del(&ctx->fh);
856 v4l2_fh_exit(&ctx->fh);
857 kfree(ctx);
858 mfc_debug_leave();
859 return 0;
860 }
861
862 /* Poll */
863 static unsigned int s5p_mfc_poll(struct file *file,
864 struct poll_table_struct *wait)
865 {
866 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
867 struct s5p_mfc_dev *dev = ctx->dev;
868 struct vb2_queue *src_q, *dst_q;
869 struct vb2_buffer *src_vb = NULL, *dst_vb = NULL;
870 unsigned int rc = 0;
871 unsigned long flags;
872
873 src_q = &ctx->vq_src;
874 dst_q = &ctx->vq_dst;
875 /*
876 * There has to be at least one buffer queued on each queued_list, which
877 * means either in driver already or waiting for driver to claim it
878 * and start processing.
879 */
880 if ((!src_q->streaming || list_empty(&src_q->queued_list))
881 && (!dst_q->streaming || list_empty(&dst_q->queued_list))) {
882 rc = POLLERR;
883 goto end;
884 }
885 mutex_unlock(&dev->mfc_mutex);
886 poll_wait(file, &src_q->done_wq, wait);
887 poll_wait(file, &dst_q->done_wq, wait);
888 mutex_lock(&dev->mfc_mutex);
889 spin_lock_irqsave(&src_q->done_lock, flags);
890 if (!list_empty(&src_q->done_list))
891 src_vb = list_first_entry(&src_q->done_list, struct vb2_buffer,
892 done_entry);
893 if (src_vb && (src_vb->state == VB2_BUF_STATE_DONE
894 || src_vb->state == VB2_BUF_STATE_ERROR))
895 rc |= POLLOUT | POLLWRNORM;
896 spin_unlock_irqrestore(&src_q->done_lock, flags);
897 spin_lock_irqsave(&dst_q->done_lock, flags);
898 if (!list_empty(&dst_q->done_list))
899 dst_vb = list_first_entry(&dst_q->done_list, struct vb2_buffer,
900 done_entry);
901 if (dst_vb && (dst_vb->state == VB2_BUF_STATE_DONE
902 || dst_vb->state == VB2_BUF_STATE_ERROR))
903 rc |= POLLIN | POLLRDNORM;
904 spin_unlock_irqrestore(&dst_q->done_lock, flags);
905 end:
906 return rc;
907 }
908
909 /* Mmap */
910 static int s5p_mfc_mmap(struct file *file, struct vm_area_struct *vma)
911 {
912 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
913 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
914 int ret;
915 if (offset < DST_QUEUE_OFF_BASE) {
916 mfc_debug(2, "mmaping source\n");
917 ret = vb2_mmap(&ctx->vq_src, vma);
918 } else { /* capture */
919 mfc_debug(2, "mmaping destination\n");
920 vma->vm_pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT);
921 ret = vb2_mmap(&ctx->vq_dst, vma);
922 }
923 return ret;
924 }
925
926 /* v4l2 ops */
927 static const struct v4l2_file_operations s5p_mfc_fops = {
928 .owner = THIS_MODULE,
929 .open = s5p_mfc_open,
930 .release = s5p_mfc_release,
931 .poll = s5p_mfc_poll,
932 .unlocked_ioctl = video_ioctl2,
933 .mmap = s5p_mfc_mmap,
934 };
935
936 static int match_child(struct device *dev, void *data)
937 {
938 if (!dev_name(dev))
939 return 0;
940 return !strcmp(dev_name(dev), (char *)data);
941 }
942
943
944 /* MFC probe function */
945 static int __devinit s5p_mfc_probe(struct platform_device *pdev)
946 {
947 struct s5p_mfc_dev *dev;
948 struct video_device *vfd;
949 struct resource *res;
950 int ret;
951
952 pr_debug("%s++\n", __func__);
953 dev = kzalloc(sizeof *dev, GFP_KERNEL);
954 if (!dev) {
955 dev_err(&pdev->dev, "Not enough memory for MFC device\n");
956 return -ENOMEM;
957 }
958
959 spin_lock_init(&dev->irqlock);
960 spin_lock_init(&dev->condlock);
961 dev->plat_dev = pdev;
962 if (!dev->plat_dev) {
963 dev_err(&pdev->dev, "No platform data specified\n");
964 ret = -ENODEV;
965 goto err_dev;
966 }
967
968 ret = s5p_mfc_init_pm(dev);
969 if (ret < 0) {
970 dev_err(&pdev->dev, "failed to get mfc clock source\n");
971 goto err_clk;
972 }
973
974 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
975 if (res == NULL) {
976 dev_err(&pdev->dev, "failed to get memory region resource\n");
977 ret = -ENOENT;
978 goto err_res;
979 }
980
981 dev->mfc_mem = request_mem_region(res->start, resource_size(res),
982 pdev->name);
983 if (dev->mfc_mem == NULL) {
984 dev_err(&pdev->dev, "failed to get memory region\n");
985 ret = -ENOENT;
986 goto err_mem_reg;
987 }
988 dev->regs_base = ioremap(dev->mfc_mem->start, resource_size(dev->mfc_mem));
989 if (dev->regs_base == NULL) {
990 dev_err(&pdev->dev, "failed to ioremap address region\n");
991 ret = -ENOENT;
992 goto err_ioremap;
993 }
994
995 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
996 if (res == NULL) {
997 dev_err(&pdev->dev, "failed to get irq resource\n");
998 ret = -ENOENT;
999 goto err_get_res;
1000 }
1001 dev->irq = res->start;
1002 ret = request_irq(dev->irq, s5p_mfc_irq, IRQF_DISABLED, pdev->name,
1003 dev);
1004 if (ret) {
1005 dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret);
1006 goto err_req_irq;
1007 }
1008
1009 dev->mem_dev_l = device_find_child(&dev->plat_dev->dev, "s5p-mfc-l",
1010 match_child);
1011 if (!dev->mem_dev_l) {
1012 mfc_err("Mem child (L) device get failed\n");
1013 ret = -ENODEV;
1014 goto err_find_child;
1015 }
1016 dev->mem_dev_r = device_find_child(&dev->plat_dev->dev, "s5p-mfc-r",
1017 match_child);
1018 if (!dev->mem_dev_r) {
1019 mfc_err("Mem child (R) device get failed\n");
1020 ret = -ENODEV;
1021 goto err_find_child;
1022 }
1023
1024 dev->alloc_ctx[0] = vb2_dma_contig_init_ctx(dev->mem_dev_l);
1025 if (IS_ERR_OR_NULL(dev->alloc_ctx[0])) {
1026 ret = PTR_ERR(dev->alloc_ctx[0]);
1027 goto err_mem_init_ctx_0;
1028 }
1029 dev->alloc_ctx[1] = vb2_dma_contig_init_ctx(dev->mem_dev_r);
1030 if (IS_ERR_OR_NULL(dev->alloc_ctx[1])) {
1031 ret = PTR_ERR(dev->alloc_ctx[1]);
1032 goto err_mem_init_ctx_1;
1033 }
1034
1035 mutex_init(&dev->mfc_mutex);
1036
1037 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
1038 if (ret)
1039 goto err_v4l2_dev_reg;
1040 init_waitqueue_head(&dev->queue);
1041
1042 /* decoder */
1043 vfd = video_device_alloc();
1044 if (!vfd) {
1045 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
1046 ret = -ENOMEM;
1047 goto err_dec_alloc;
1048 }
1049 vfd->fops = &s5p_mfc_fops,
1050 vfd->ioctl_ops = get_dec_v4l2_ioctl_ops();
1051 vfd->release = video_device_release,
1052 vfd->lock = &dev->mfc_mutex;
1053 vfd->v4l2_dev = &dev->v4l2_dev;
1054 snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_DEC_NAME);
1055 dev->vfd_dec = vfd;
1056 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
1057 if (ret) {
1058 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1059 video_device_release(vfd);
1060 goto err_dec_reg;
1061 }
1062 v4l2_info(&dev->v4l2_dev,
1063 "decoder registered as /dev/video%d\n", vfd->num);
1064 video_set_drvdata(vfd, dev);
1065
1066 /* encoder */
1067 vfd = video_device_alloc();
1068 if (!vfd) {
1069 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
1070 ret = -ENOMEM;
1071 goto err_enc_alloc;
1072 }
1073 vfd->fops = &s5p_mfc_fops,
1074 vfd->ioctl_ops = get_enc_v4l2_ioctl_ops();
1075 vfd->release = video_device_release,
1076 vfd->lock = &dev->mfc_mutex;
1077 vfd->v4l2_dev = &dev->v4l2_dev;
1078 snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_ENC_NAME);
1079 dev->vfd_enc = vfd;
1080 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
1081 if (ret) {
1082 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1083 video_device_release(vfd);
1084 goto err_enc_reg;
1085 }
1086 v4l2_info(&dev->v4l2_dev,
1087 "encoder registered as /dev/video%d\n", vfd->num);
1088 video_set_drvdata(vfd, dev);
1089 platform_set_drvdata(pdev, dev);
1090
1091 dev->hw_lock = 0;
1092 dev->watchdog_workqueue = create_singlethread_workqueue(S5P_MFC_NAME);
1093 INIT_WORK(&dev->watchdog_work, s5p_mfc_watchdog_worker);
1094 atomic_set(&dev->watchdog_cnt, 0);
1095 init_timer(&dev->watchdog_timer);
1096 dev->watchdog_timer.data = (unsigned long)dev;
1097 dev->watchdog_timer.function = s5p_mfc_watchdog;
1098
1099 pr_debug("%s--\n", __func__);
1100 return 0;
1101
1102 /* Deinit MFC if probe had failed */
1103 err_enc_reg:
1104 video_device_release(dev->vfd_enc);
1105 err_enc_alloc:
1106 video_unregister_device(dev->vfd_dec);
1107 err_dec_reg:
1108 video_device_release(dev->vfd_dec);
1109 err_dec_alloc:
1110 v4l2_device_unregister(&dev->v4l2_dev);
1111 err_v4l2_dev_reg:
1112 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]);
1113 err_mem_init_ctx_1:
1114 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);
1115 err_mem_init_ctx_0:
1116 err_find_child:
1117 free_irq(dev->irq, dev);
1118 err_req_irq:
1119 err_get_res:
1120 iounmap(dev->regs_base);
1121 dev->regs_base = NULL;
1122 err_ioremap:
1123 release_resource(dev->mfc_mem);
1124 kfree(dev->mfc_mem);
1125 err_mem_reg:
1126 err_res:
1127 s5p_mfc_final_pm(dev);
1128 err_clk:
1129 err_dev:
1130 kfree(dev);
1131 pr_debug("%s-- with error\n", __func__);
1132 return ret;
1133
1134 }
1135
1136 /* Remove the driver */
1137 static int __devexit s5p_mfc_remove(struct platform_device *pdev)
1138 {
1139 struct s5p_mfc_dev *dev = platform_get_drvdata(pdev);
1140
1141 v4l2_info(&dev->v4l2_dev, "Removing %s\n", pdev->name);
1142
1143 del_timer_sync(&dev->watchdog_timer);
1144 flush_workqueue(dev->watchdog_workqueue);
1145 destroy_workqueue(dev->watchdog_workqueue);
1146
1147 video_unregister_device(dev->vfd_enc);
1148 video_unregister_device(dev->vfd_dec);
1149 v4l2_device_unregister(&dev->v4l2_dev);
1150 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);
1151 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]);
1152
1153 free_irq(dev->irq, dev);
1154 iounmap(dev->regs_base);
1155 if (dev->mfc_mem) {
1156 release_resource(dev->mfc_mem);
1157 kfree(dev->mfc_mem);
1158 dev->mfc_mem = NULL;
1159 }
1160 s5p_mfc_final_pm(dev);
1161 kfree(dev);
1162 return 0;
1163 }
1164
1165 #ifdef CONFIG_PM_SLEEP
1166
1167 static int s5p_mfc_suspend(struct device *dev)
1168 {
1169 struct platform_device *pdev = to_platform_device(dev);
1170 struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
1171 int ret;
1172
1173 if (m_dev->num_inst == 0)
1174 return 0;
1175 return s5p_mfc_sleep(m_dev);
1176 if (test_and_set_bit(0, &m_dev->enter_suspend) != 0) {
1177 mfc_err("Error: going to suspend for a second time\n");
1178 return -EIO;
1179 }
1180
1181 /* Check if we're processing then wait if it necessary. */
1182 while (test_and_set_bit(0, &m_dev->hw_lock) != 0) {
1183 /* Try and lock the HW */
1184 /* Wait on the interrupt waitqueue */
1185 ret = wait_event_interruptible_timeout(m_dev->queue,
1186 m_dev->int_cond || m_dev->ctx[m_dev->curr_ctx]->int_cond,
1187 msecs_to_jiffies(MFC_INT_TIMEOUT));
1188
1189 if (ret == 0) {
1190 mfc_err("Waiting for hardware to finish timed out\n");
1191 return -EIO;
1192 }
1193 }
1194 return 0;
1195 }
1196
1197 static int s5p_mfc_resume(struct device *dev)
1198 {
1199 struct platform_device *pdev = to_platform_device(dev);
1200 struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
1201
1202 if (m_dev->num_inst == 0)
1203 return 0;
1204 return s5p_mfc_wakeup(m_dev);
1205 }
1206 #endif
1207
1208 #ifdef CONFIG_PM_RUNTIME
1209 static int s5p_mfc_runtime_suspend(struct device *dev)
1210 {
1211 struct platform_device *pdev = to_platform_device(dev);
1212 struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
1213
1214 atomic_set(&m_dev->pm.power, 0);
1215 return 0;
1216 }
1217
1218 static int s5p_mfc_runtime_resume(struct device *dev)
1219 {
1220 struct platform_device *pdev = to_platform_device(dev);
1221 struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
1222 int pre_power;
1223
1224 if (!m_dev->alloc_ctx)
1225 return 0;
1226 pre_power = atomic_read(&m_dev->pm.power);
1227 atomic_set(&m_dev->pm.power, 1);
1228 return 0;
1229 }
1230 #endif
1231
1232 /* Power management */
1233 static const struct dev_pm_ops s5p_mfc_pm_ops = {
1234 SET_SYSTEM_SLEEP_PM_OPS(s5p_mfc_suspend, s5p_mfc_resume)
1235 SET_RUNTIME_PM_OPS(s5p_mfc_runtime_suspend, s5p_mfc_runtime_resume,
1236 NULL)
1237 };
1238
1239 static struct platform_driver s5p_mfc_pdrv = {
1240 .probe = s5p_mfc_probe,
1241 .remove = __devexit_p(s5p_mfc_remove),
1242 .driver = {
1243 .name = S5P_MFC_NAME,
1244 .owner = THIS_MODULE,
1245 .pm = &s5p_mfc_pm_ops
1246 },
1247 };
1248
1249 static char banner[] __initdata =
1250 "S5P MFC V4L2 Driver, (C) 2011 Samsung Electronics\n";
1251
1252 static int __init s5p_mfc_init(void)
1253 {
1254 int ret;
1255
1256 pr_info("%s", banner);
1257 ret = platform_driver_register(&s5p_mfc_pdrv);
1258 if (ret)
1259 pr_err("Platform device registration failed.\n");
1260 return ret;
1261 }
1262
1263 static void __devexit s5p_mfc_exit(void)
1264 {
1265 platform_driver_unregister(&s5p_mfc_pdrv);
1266 }
1267
1268 module_init(s5p_mfc_init);
1269 module_exit(s5p_mfc_exit);
1270
1271 MODULE_LICENSE("GPL");
1272 MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
1273 MODULE_DESCRIPTION("Samsung S5P Multi Format Codec V4L2 driver");
1274
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