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[media] staging/solo6x10: select the desired font
[deliverable/linux.git] / drivers / media / platform / s5p-mfc / s5p_mfc.c
CommitLineData
af935746
KD		 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>
af935746 21#include <linux/videodev2.h>
f9f715a9 22#include <media/v4l2-event.h>
af935746 23#include <linux/workqueue.h>
b27a23be 24#include <linux/of.h>
af935746 25#include <media/videobuf2-core.h>
43a1ea1f 26#include "s5p_mfc_common.h"
af935746
KD		 27#include "s5p_mfc_ctrl.h"
28#include "s5p_mfc_debug.h"
29#include "s5p_mfc_dec.h"
30#include "s5p_mfc_enc.h"
31#include "s5p_mfc_intr.h"
43a1ea1f
AK		 32#include "s5p_mfc_opr.h"
33#include "s5p_mfc_cmd.h"
af935746 34#include "s5p_mfc_pm.h"
af935746
KD		 35
36#define S5P_MFC_NAME "s5p-mfc"
37#define S5P_MFC_DEC_NAME "s5p-mfc-dec"
38#define S5P_MFC_ENC_NAME "s5p-mfc-enc"
39
40int debug;
41module_param(debug, int, S_IRUGO | S_IWUSR);
42MODULE_PARM_DESC(debug, "Debug level - higher value produces more verbose messages");
43
44/* Helper functions for interrupt processing */
7fb89eca 45
af935746 46/* Remove from hw execution round robin */
7fb89eca 47void clear_work_bit(struct s5p_mfc_ctx *ctx)
af935746
KD		 48{
49 struct s5p_mfc_dev *dev = ctx->dev;
50
51 spin_lock(&dev->condlock);
7fb89eca 52 __clear_bit(ctx->num, &dev->ctx_work_bits);
af935746
KD		 53 spin_unlock(&dev->condlock);
54}
55
7fb89eca
AH		 56/* Add to hw execution round robin */
57void set_work_bit(struct s5p_mfc_ctx *ctx)
58{
59 struct s5p_mfc_dev *dev = ctx->dev;
60
61 spin_lock(&dev->condlock);
62 __set_bit(ctx->num, &dev->ctx_work_bits);
63 spin_unlock(&dev->condlock);
64}
65
66/* Remove from hw execution round robin */
67void clear_work_bit_irqsave(struct s5p_mfc_ctx *ctx)
68{
69 struct s5p_mfc_dev *dev = ctx->dev;
70 unsigned long flags;
71
72 spin_lock_irqsave(&dev->condlock, flags);
73 __clear_bit(ctx->num, &dev->ctx_work_bits);
74 spin_unlock_irqrestore(&dev->condlock, flags);
75}
76
77/* Add to hw execution round robin */
78void set_work_bit_irqsave(struct s5p_mfc_ctx *ctx)
79{
80 struct s5p_mfc_dev *dev = ctx->dev;
81 unsigned long flags;
82
83 spin_lock_irqsave(&dev->condlock, flags);
84 __set_bit(ctx->num, &dev->ctx_work_bits);
85 spin_unlock_irqrestore(&dev->condlock, flags);
86}
87
af935746
KD		 88/* Wake up context wait_queue */
89static void wake_up_ctx(struct s5p_mfc_ctx *ctx, unsigned int reason,
90 unsigned int err)
91{
92 ctx->int_cond = 1;
93 ctx->int_type = reason;
94 ctx->int_err = err;
95 wake_up(&ctx->queue);
96}
97
98/* Wake up device wait_queue */
99static void wake_up_dev(struct s5p_mfc_dev *dev, unsigned int reason,
100 unsigned int err)
101{
102 dev->int_cond = 1;
103 dev->int_type = reason;
104 dev->int_err = err;
105 wake_up(&dev->queue);
106}
107
a13bba4f 108static void s5p_mfc_watchdog(unsigned long arg)
af935746
KD		 109{
110 struct s5p_mfc_dev *dev = (struct s5p_mfc_dev *)arg;
111
112 if (test_bit(0, &dev->hw_lock))
113 atomic_inc(&dev->watchdog_cnt);
114 if (atomic_read(&dev->watchdog_cnt) >= MFC_WATCHDOG_CNT) {
115 /* This means that hw is busy and no interrupts were
116 * generated by hw for the Nth time of running this
117 * watchdog timer. This usually means a serious hw
118 * error. Now it is time to kill all instances and
119 * reset the MFC. */
120 mfc_err("Time out during waiting for HW\n");
121 queue_work(dev->watchdog_workqueue, &dev->watchdog_work);
122 }
123 dev->watchdog_timer.expires = jiffies +
124 msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
125 add_timer(&dev->watchdog_timer);
126}
127
128static void s5p_mfc_watchdog_worker(struct work_struct *work)
129{
130 struct s5p_mfc_dev *dev;
131 struct s5p_mfc_ctx *ctx;
132 unsigned long flags;
133 int mutex_locked;
134 int i, ret;
135
136 dev = container_of(work, struct s5p_mfc_dev, watchdog_work);
137
138 mfc_err("Driver timeout error handling\n");
139 /* Lock the mutex that protects open and release.
140 * This is necessary as they may load and unload firmware. */
141 mutex_locked = mutex_trylock(&dev->mfc_mutex);
142 if (!mutex_locked)
143 mfc_err("Error: some instance may be closing/opening\n");
144 spin_lock_irqsave(&dev->irqlock, flags);
145
146 s5p_mfc_clock_off();
147
148 for (i = 0; i < MFC_NUM_CONTEXTS; i++) {
149 ctx = dev->ctx[i];
150 if (!ctx)
151 continue;
152 ctx->state = MFCINST_ERROR;
43a1ea1f
AK		 153 s5p_mfc_hw_call(dev->mfc_ops, cleanup_queue, &ctx->dst_queue,
154 &ctx->vq_dst);
155 s5p_mfc_hw_call(dev->mfc_ops, cleanup_queue, &ctx->src_queue,
156 &ctx->vq_src);
af935746 157 clear_work_bit(ctx);
43a1ea1f 158 wake_up_ctx(ctx, S5P_MFC_R2H_CMD_ERR_RET, 0);
af935746
KD		 159 }
160 clear_bit(0, &dev->hw_lock);
161 spin_unlock_irqrestore(&dev->irqlock, flags);
162 /* Double check if there is at least one instance running.
163 * If no instance is in memory than no firmware should be present */
164 if (dev->num_inst > 0) {
165 ret = s5p_mfc_reload_firmware(dev);
166 if (ret) {
167 mfc_err("Failed to reload FW\n");
168 goto unlock;
169 }
170 s5p_mfc_clock_on();
171 ret = s5p_mfc_init_hw(dev);
172 if (ret)
173 mfc_err("Failed to reinit FW\n");
174 }
175unlock:
176 if (mutex_locked)
177 mutex_unlock(&dev->mfc_mutex);
178}
179
180static enum s5p_mfc_node_type s5p_mfc_get_node_type(struct file *file)
181{
182 struct video_device *vdev = video_devdata(file);
183
184 if (!vdev) {
185 mfc_err("failed to get video_device");
186 return MFCNODE_INVALID;
187 }
188 if (vdev->index == 0)
189 return MFCNODE_DECODER;
190 else if (vdev->index == 1)
191 return MFCNODE_ENCODER;
192 return MFCNODE_INVALID;
193}
194
195static void s5p_mfc_clear_int_flags(struct s5p_mfc_dev *dev)
196{
197 mfc_write(dev, 0, S5P_FIMV_RISC_HOST_INT);
198 mfc_write(dev, 0, S5P_FIMV_RISC2HOST_CMD);
199 mfc_write(dev, 0xffff, S5P_FIMV_SI_RTN_CHID);
200}
201
202static void s5p_mfc_handle_frame_all_extracted(struct s5p_mfc_ctx *ctx)
203{
204 struct s5p_mfc_buf *dst_buf;
43a1ea1f 205 struct s5p_mfc_dev *dev = ctx->dev;
af935746
KD		 206
207 ctx->state = MFCINST_FINISHED;
208 ctx->sequence++;
209 while (!list_empty(&ctx->dst_queue)) {
210 dst_buf = list_entry(ctx->dst_queue.next,
211 struct s5p_mfc_buf, list);
212 mfc_debug(2, "Cleaning up buffer: %d\n",
213 dst_buf->b->v4l2_buf.index);
214 vb2_set_plane_payload(dst_buf->b, 0, 0);
215 vb2_set_plane_payload(dst_buf->b, 1, 0);
216 list_del(&dst_buf->list);
217 ctx->dst_queue_cnt--;
218 dst_buf->b->v4l2_buf.sequence = (ctx->sequence++);
219
43a1ea1f
AK		 220 if (s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_top, ctx) ==
221 s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_bot, ctx))
af935746
KD		 222 dst_buf->b->v4l2_buf.field = V4L2_FIELD_NONE;
223 else
224 dst_buf->b->v4l2_buf.field = V4L2_FIELD_INTERLACED;
225
226 ctx->dec_dst_flag &= ~(1 << dst_buf->b->v4l2_buf.index);
227 vb2_buffer_done(dst_buf->b, VB2_BUF_STATE_DONE);
228 }
229}
230
231static void s5p_mfc_handle_frame_copy_time(struct s5p_mfc_ctx *ctx)
232{
233 struct s5p_mfc_dev *dev = ctx->dev;
234 struct s5p_mfc_buf *dst_buf, *src_buf;
43a1ea1f
AK		 235 size_t dec_y_addr;
236 unsigned int frame_type;
237
238 dec_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dec_y_adr, dev);
239 frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_dec_frame_type, dev);
af935746
KD		 240
241 /* Copy timestamp / timecode from decoded src to dst and set
242 appropraite flags */
243 src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
244 list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
ba7fcb0c 245 if (vb2_dma_contig_plane_dma_addr(dst_buf->b, 0) == dec_y_addr) {
56006017
KD		 246 dst_buf->b->v4l2_buf.timecode =
247 src_buf->b->v4l2_buf.timecode;
248 dst_buf->b->v4l2_buf.timestamp =
249 src_buf->b->v4l2_buf.timestamp;
af935746
KD		 250 switch (frame_type) {
251 case S5P_FIMV_DECODE_FRAME_I_FRAME:
252 dst_buf->b->v4l2_buf.flags |=
253 V4L2_BUF_FLAG_KEYFRAME;
254 break;
255 case S5P_FIMV_DECODE_FRAME_P_FRAME:
256 dst_buf->b->v4l2_buf.flags |=
257 V4L2_BUF_FLAG_PFRAME;
258 break;
259 case S5P_FIMV_DECODE_FRAME_B_FRAME:
260 dst_buf->b->v4l2_buf.flags |=
261 V4L2_BUF_FLAG_BFRAME;
262 break;
263 }
264 break;
265 }
266 }
267}
268
269static void s5p_mfc_handle_frame_new(struct s5p_mfc_ctx *ctx, unsigned int err)
270{
271 struct s5p_mfc_dev *dev = ctx->dev;
272 struct s5p_mfc_buf *dst_buf;
43a1ea1f
AK		 273 size_t dspl_y_addr;
274 unsigned int frame_type;
af935746 275
43a1ea1f 276 dspl_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_y_adr, dev);
90c0ae50 277 frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_disp_frame_type, ctx);
43a1ea1f 278
af935746
KD		 279 /* If frame is same as previous then skip and do not dequeue */
280 if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) {
281 if (!ctx->after_packed_pb)
282 ctx->sequence++;
283 ctx->after_packed_pb = 0;
284 return;
285 }
286 ctx->sequence++;
287 /* The MFC returns address of the buffer, now we have to
288 * check which videobuf does it correspond to */
289 list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
290 /* Check if this is the buffer we're looking for */
ba7fcb0c 291 if (vb2_dma_contig_plane_dma_addr(dst_buf->b, 0) == dspl_y_addr) {
af935746
KD		 292 list_del(&dst_buf->list);
293 ctx->dst_queue_cnt--;
294 dst_buf->b->v4l2_buf.sequence = ctx->sequence;
43a1ea1f
AK		 295 if (s5p_mfc_hw_call(dev->mfc_ops,
296 get_pic_type_top, ctx) ==
297 s5p_mfc_hw_call(dev->mfc_ops,
298 get_pic_type_bot, ctx))
af935746
KD		 299 dst_buf->b->v4l2_buf.field = V4L2_FIELD_NONE;
300 else
301 dst_buf->b->v4l2_buf.field =
302 V4L2_FIELD_INTERLACED;
303 vb2_set_plane_payload(dst_buf->b, 0, ctx->luma_size);
304 vb2_set_plane_payload(dst_buf->b, 1, ctx->chroma_size);
305 clear_bit(dst_buf->b->v4l2_buf.index,
306 &ctx->dec_dst_flag);
307
308 vb2_buffer_done(dst_buf->b,
309 err ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
310
af935746
KD		 311 break;
312 }
313 }
314}
315
316/* Handle frame decoding interrupt */
317static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx,
318 unsigned int reason, unsigned int err)
319{
320 struct s5p_mfc_dev *dev = ctx->dev;
321 unsigned int dst_frame_status;
322 struct s5p_mfc_buf *src_buf;
323 unsigned long flags;
324 unsigned int res_change;
325
43a1ea1f 326 dst_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev)
af935746 327 & S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK;
f96f3cfa
JP		 328 res_change = (s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev)
329 & S5P_FIMV_DEC_STATUS_RESOLUTION_MASK)
330 >> S5P_FIMV_DEC_STATUS_RESOLUTION_SHIFT;
af935746
KD		 331 mfc_debug(2, "Frame Status: %x\n", dst_frame_status);
332 if (ctx->state == MFCINST_RES_CHANGE_INIT)
333 ctx->state = MFCINST_RES_CHANGE_FLUSH;
f96f3cfa
JP		 334 if (res_change == S5P_FIMV_RES_INCREASE ||
335 res_change == S5P_FIMV_RES_DECREASE) {
af935746 336 ctx->state = MFCINST_RES_CHANGE_INIT;
43a1ea1f 337 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
af935746
KD		 338 wake_up_ctx(ctx, reason, err);
339 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
340 BUG();
341 s5p_mfc_clock_off();
43a1ea1f 342 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
af935746
KD		 343 return;
344 }
345 if (ctx->dpb_flush_flag)
346 ctx->dpb_flush_flag = 0;
347
348 spin_lock_irqsave(&dev->irqlock, flags);
349 /* All frames remaining in the buffer have been extracted */
350 if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_EMPTY) {
351 if (ctx->state == MFCINST_RES_CHANGE_FLUSH) {
352 s5p_mfc_handle_frame_all_extracted(ctx);
353 ctx->state = MFCINST_RES_CHANGE_END;
354 goto leave_handle_frame;
355 } else {
356 s5p_mfc_handle_frame_all_extracted(ctx);
357 }
358 }
359
360 if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY ||
361 dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_ONLY)
362 s5p_mfc_handle_frame_copy_time(ctx);
363
364 /* A frame has been decoded and is in the buffer */
365 if (dst_frame_status == S5P_FIMV_DEC_STATUS_DISPLAY_ONLY ||
366 dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY) {
367 s5p_mfc_handle_frame_new(ctx, err);
368 } else {
369 mfc_debug(2, "No frame decode\n");
370 }
371 /* Mark source buffer as complete */
372 if (dst_frame_status != S5P_FIMV_DEC_STATUS_DISPLAY_ONLY
373 && !list_empty(&ctx->src_queue)) {
374 src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf,
375 list);
43a1ea1f
AK		 376 ctx->consumed_stream += s5p_mfc_hw_call(dev->mfc_ops,
377 get_consumed_stream, dev);
378 if (ctx->codec_mode != S5P_MFC_CODEC_H264_DEC &&
d2a0db1e
AK		 379 ctx->consumed_stream + STUFF_BYTE <
380 src_buf->b->v4l2_planes[0].bytesused) {
af935746
KD		 381 /* Run MFC again on the same buffer */
382 mfc_debug(2, "Running again the same buffer\n");
383 ctx->after_packed_pb = 1;
384 } else {
af935746
KD		 385 mfc_debug(2, "MFC needs next buffer\n");
386 ctx->consumed_stream = 0;
a34026e7
KD		 387 if (src_buf->flags & MFC_BUF_FLAG_EOS)
388 ctx->state = MFCINST_FINISHING;
af935746
KD		 389 list_del(&src_buf->list);
390 ctx->src_queue_cnt--;
43a1ea1f 391 if (s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) > 0)
af935746
KD		 392 vb2_buffer_done(src_buf->b, VB2_BUF_STATE_ERROR);
393 else
394 vb2_buffer_done(src_buf->b, VB2_BUF_STATE_DONE);
395 }
396 }
397leave_handle_frame:
398 spin_unlock_irqrestore(&dev->irqlock, flags);
399 if ((ctx->src_queue_cnt == 0 && ctx->state != MFCINST_FINISHING)
400 || ctx->dst_queue_cnt < ctx->dpb_count)
401 clear_work_bit(ctx);
43a1ea1f 402 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
af935746
KD		 403 wake_up_ctx(ctx, reason, err);
404 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
405 BUG();
406 s5p_mfc_clock_off();
43a1ea1f 407 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
af935746
KD		 408}
409
410/* Error handling for interrupt */
7296e25f
KD		 411static void s5p_mfc_handle_error(struct s5p_mfc_dev *dev,
412 struct s5p_mfc_ctx *ctx, unsigned int reason, unsigned int err)
af935746 413{
af935746
KD		 414 unsigned long flags;
415
af935746 416 mfc_err("Interrupt Error: %08x\n", err);
af935746 417
7296e25f
KD		 418 if (ctx != NULL) {
419 /* Error recovery is dependent on the state of context */
420 switch (ctx->state) {
421 case MFCINST_RES_CHANGE_INIT:
422 case MFCINST_RES_CHANGE_FLUSH:
423 case MFCINST_RES_CHANGE_END:
424 case MFCINST_FINISHING:
425 case MFCINST_FINISHED:
426 case MFCINST_RUNNING:
427 /* It is higly probable that an error occured
428 * while decoding a frame */
429 clear_work_bit(ctx);
430 ctx->state = MFCINST_ERROR;
431 /* Mark all dst buffers as having an error */
432 spin_lock_irqsave(&dev->irqlock, flags);
433 s5p_mfc_hw_call(dev->mfc_ops, cleanup_queue,
434 &ctx->dst_queue, &ctx->vq_dst);
435 /* Mark all src buffers as having an error */
436 s5p_mfc_hw_call(dev->mfc_ops, cleanup_queue,
437 &ctx->src_queue, &ctx->vq_src);
438 spin_unlock_irqrestore(&dev->irqlock, flags);
439 wake_up_ctx(ctx, reason, err);
440 break;
441 default:
442 clear_work_bit(ctx);
443 ctx->state = MFCINST_ERROR;
444 wake_up_ctx(ctx, reason, err);
445 break;
446 }
af935746 447 }
7296e25f
KD		 448 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
449 BUG();
450 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
451 s5p_mfc_clock_off();
452 wake_up_dev(dev, reason, err);
af935746
KD		 453 return;
454}
455
456/* Header parsing interrupt handling */
457static void s5p_mfc_handle_seq_done(struct s5p_mfc_ctx *ctx,
458 unsigned int reason, unsigned int err)
459{
460 struct s5p_mfc_dev *dev;
af935746 461
1259762f 462 if (ctx == NULL)
af935746
KD		 463 return;
464 dev = ctx->dev;
465 if (ctx->c_ops->post_seq_start) {
466 if (ctx->c_ops->post_seq_start(ctx))
467 mfc_err("post_seq_start() failed\n");
468 } else {
43a1ea1f
AK		 469 ctx->img_width = s5p_mfc_hw_call(dev->mfc_ops, get_img_width,
470 dev);
471 ctx->img_height = s5p_mfc_hw_call(dev->mfc_ops, get_img_height,
472 dev);
af935746 473
8f532a7f
AK		 474 s5p_mfc_hw_call(dev->mfc_ops, dec_calc_dpb_size, ctx);
475
43a1ea1f
AK		 476 ctx->dpb_count = s5p_mfc_hw_call(dev->mfc_ops, get_dpb_count,
477 dev);
f96f3cfa
JP		 478 ctx->mv_count = s5p_mfc_hw_call(dev->mfc_ops, get_mv_count,
479 dev);
bb869368 480 if (ctx->img_width == 0 || ctx->img_height == 0)
af935746
KD		 481 ctx->state = MFCINST_ERROR;
482 else
483 ctx->state = MFCINST_HEAD_PARSED;
f96f3cfa
JP		 484
485 if ((ctx->codec_mode == S5P_MFC_CODEC_H264_DEC ||
486 ctx->codec_mode == S5P_MFC_CODEC_H264_MVC_DEC) &&
487 !list_empty(&ctx->src_queue)) {
488 struct s5p_mfc_buf *src_buf;
489 src_buf = list_entry(ctx->src_queue.next,
490 struct s5p_mfc_buf, list);
491 if (s5p_mfc_hw_call(dev->mfc_ops, get_consumed_stream,
492 dev) <
493 src_buf->b->v4l2_planes[0].bytesused)
494 ctx->head_processed = 0;
495 else
496 ctx->head_processed = 1;
497 } else {
498 ctx->head_processed = 1;
499 }
af935746 500 }
43a1ea1f 501 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
af935746
KD		 502 clear_work_bit(ctx);
503 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
504 BUG();
505 s5p_mfc_clock_off();
43a1ea1f 506 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
af935746
KD		 507 wake_up_ctx(ctx, reason, err);
508}
509
510/* Header parsing interrupt handling */
511static void s5p_mfc_handle_init_buffers(struct s5p_mfc_ctx *ctx,
512 unsigned int reason, unsigned int err)
513{
514 struct s5p_mfc_buf *src_buf;
515 struct s5p_mfc_dev *dev;
516 unsigned long flags;
517
1259762f 518 if (ctx == NULL)
af935746
KD		 519 return;
520 dev = ctx->dev;
43a1ea1f 521 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
af935746
KD		 522 ctx->int_type = reason;
523 ctx->int_err = err;
524 ctx->int_cond = 1;
7fb89eca 525 clear_work_bit(ctx);
af935746
KD		 526 if (err == 0) {
527 ctx->state = MFCINST_RUNNING;
f96f3cfa 528 if (!ctx->dpb_flush_flag && ctx->head_processed) {
af935746
KD		 529 spin_lock_irqsave(&dev->irqlock, flags);
530 if (!list_empty(&ctx->src_queue)) {
531 src_buf = list_entry(ctx->src_queue.next,
532 struct s5p_mfc_buf, list);
533 list_del(&src_buf->list);
534 ctx->src_queue_cnt--;
535 vb2_buffer_done(src_buf->b,
536 VB2_BUF_STATE_DONE);
537 }
538 spin_unlock_irqrestore(&dev->irqlock, flags);
539 } else {
540 ctx->dpb_flush_flag = 0;
541 }
542 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
543 BUG();
544
545 s5p_mfc_clock_off();
546
547 wake_up(&ctx->queue);
43a1ea1f 548 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
af935746
KD		 549 } else {
550 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
551 BUG();
552
553 s5p_mfc_clock_off();
554
555 wake_up(&ctx->queue);
556 }
557}
558
f9f715a9
AH		 559static void s5p_mfc_handle_stream_complete(struct s5p_mfc_ctx *ctx,
560 unsigned int reason, unsigned int err)
561{
562 struct s5p_mfc_dev *dev = ctx->dev;
563 struct s5p_mfc_buf *mb_entry;
564
565 mfc_debug(2, "Stream completed");
566
567 s5p_mfc_clear_int_flags(dev);
568 ctx->int_type = reason;
569 ctx->int_err = err;
570 ctx->state = MFCINST_FINISHED;
571
572 spin_lock(&dev->irqlock);
573 if (!list_empty(&ctx->dst_queue)) {
574 mb_entry = list_entry(ctx->dst_queue.next, struct s5p_mfc_buf,
575 list);
576 list_del(&mb_entry->list);
577 ctx->dst_queue_cnt--;
578 vb2_set_plane_payload(mb_entry->b, 0, 0);
579 vb2_buffer_done(mb_entry->b, VB2_BUF_STATE_DONE);
580 }
581 spin_unlock(&dev->irqlock);
582
583 clear_work_bit(ctx);
584
e8256447 585 WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
f9f715a9
AH		 586
587 s5p_mfc_clock_off();
588 wake_up(&ctx->queue);
43a1ea1f 589 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
f9f715a9
AH		 590}
591
af935746
KD		 592/* Interrupt processing */
593static irqreturn_t s5p_mfc_irq(int irq, void *priv)
594{
595 struct s5p_mfc_dev *dev = priv;
596 struct s5p_mfc_ctx *ctx;
597 unsigned int reason;
598 unsigned int err;
599
600 mfc_debug_enter();
601 /* Reset the timeout watchdog */
602 atomic_set(&dev->watchdog_cnt, 0);
603 ctx = dev->ctx[dev->curr_ctx];
604 /* Get the reason of interrupt and the error code */
43a1ea1f
AK		 605 reason = s5p_mfc_hw_call(dev->mfc_ops, get_int_reason, dev);
606 err = s5p_mfc_hw_call(dev->mfc_ops, get_int_err, dev);
af935746
KD		 607 mfc_debug(1, "Int reason: %d (err: %08x)\n", reason, err);
608 switch (reason) {
43a1ea1f 609 case S5P_MFC_R2H_CMD_ERR_RET:
af935746
KD		 610 /* An error has occured */
611 if (ctx->state == MFCINST_RUNNING &&
43a1ea1f
AK		 612 s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) >=
613 dev->warn_start)
af935746
KD		 614 s5p_mfc_handle_frame(ctx, reason, err);
615 else
7296e25f 616 s5p_mfc_handle_error(dev, ctx, reason, err);
af935746
KD		 617 clear_bit(0, &dev->enter_suspend);
618 break;
619
43a1ea1f
AK		 620 case S5P_MFC_R2H_CMD_SLICE_DONE_RET:
621 case S5P_MFC_R2H_CMD_FIELD_DONE_RET:
622 case S5P_MFC_R2H_CMD_FRAME_DONE_RET:
af935746
KD		 623 if (ctx->c_ops->post_frame_start) {
624 if (ctx->c_ops->post_frame_start(ctx))
625 mfc_err("post_frame_start() failed\n");
43a1ea1f 626 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
af935746
KD		 627 wake_up_ctx(ctx, reason, err);
628 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
629 BUG();
630 s5p_mfc_clock_off();
43a1ea1f 631 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
af935746
KD		 632 } else {
633 s5p_mfc_handle_frame(ctx, reason, err);
634 }
635 break;
636
43a1ea1f 637 case S5P_MFC_R2H_CMD_SEQ_DONE_RET:
af935746
KD		 638 s5p_mfc_handle_seq_done(ctx, reason, err);
639 break;
640
43a1ea1f
AK		 641 case S5P_MFC_R2H_CMD_OPEN_INSTANCE_RET:
642 ctx->inst_no = s5p_mfc_hw_call(dev->mfc_ops, get_inst_no, dev);
af935746
KD		 643 ctx->state = MFCINST_GOT_INST;
644 clear_work_bit(ctx);
645 wake_up(&ctx->queue);
646 goto irq_cleanup_hw;
647
43a1ea1f 648 case S5P_MFC_R2H_CMD_CLOSE_INSTANCE_RET:
af935746
KD		 649 clear_work_bit(ctx);
650 ctx->state = MFCINST_FREE;
651 wake_up(&ctx->queue);
652 goto irq_cleanup_hw;
653
43a1ea1f
AK		 654 case S5P_MFC_R2H_CMD_SYS_INIT_RET:
655 case S5P_MFC_R2H_CMD_FW_STATUS_RET:
656 case S5P_MFC_R2H_CMD_SLEEP_RET:
657 case S5P_MFC_R2H_CMD_WAKEUP_RET:
af935746
KD		 658 if (ctx)
659 clear_work_bit(ctx);
43a1ea1f 660 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
af935746
KD		 661 wake_up_dev(dev, reason, err);
662 clear_bit(0, &dev->hw_lock);
663 clear_bit(0, &dev->enter_suspend);
664 break;
665
43a1ea1f 666 case S5P_MFC_R2H_CMD_INIT_BUFFERS_RET:
af935746
KD		 667 s5p_mfc_handle_init_buffers(ctx, reason, err);
668 break;
f9f715a9 669
43a1ea1f 670 case S5P_MFC_R2H_CMD_COMPLETE_SEQ_RET:
f9f715a9
AH		 671 s5p_mfc_handle_stream_complete(ctx, reason, err);
672 break;
673
8f23cc02
AK		 674 case S5P_MFC_R2H_CMD_DPB_FLUSH_RET:
675 clear_work_bit(ctx);
676 ctx->state = MFCINST_RUNNING;
677 wake_up(&ctx->queue);
678 goto irq_cleanup_hw;
679
af935746
KD		 680 default:
681 mfc_debug(2, "Unknown int reason\n");
43a1ea1f 682 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
af935746
KD		 683 }
684 mfc_debug_leave();
685 return IRQ_HANDLED;
686irq_cleanup_hw:
43a1ea1f 687 s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
af935746
KD		 688 ctx->int_type = reason;
689 ctx->int_err = err;
690 ctx->int_cond = 1;
691 if (test_and_clear_bit(0, &dev->hw_lock) == 0)
692 mfc_err("Failed to unlock hw\n");
693
694 s5p_mfc_clock_off();
695
43a1ea1f 696 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
af935746
KD		 697 mfc_debug(2, "Exit via irq_cleanup_hw\n");
698 return IRQ_HANDLED;
699}
700
701/* Open an MFC node */
702static int s5p_mfc_open(struct file *file)
703{
704 struct s5p_mfc_dev *dev = video_drvdata(file);
705 struct s5p_mfc_ctx *ctx = NULL;
706 struct vb2_queue *q;
af935746
KD		 707 int ret = 0;
708
709 mfc_debug_enter();
bc738301
HV		 710 if (mutex_lock_interruptible(&dev->mfc_mutex))
711 return -ERESTARTSYS;
af935746
KD		 712 dev->num_inst++; /* It is guarded by mfc_mutex in vfd */
713 /* Allocate memory for context */
bae061b4 714 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
af935746
KD		 715 if (!ctx) {
716 mfc_err("Not enough memory\n");
717 ret = -ENOMEM;
718 goto err_alloc;
719 }
720 v4l2_fh_init(&ctx->fh, video_devdata(file));
721 file->private_data = &ctx->fh;
722 v4l2_fh_add(&ctx->fh);
723 ctx->dev = dev;
724 INIT_LIST_HEAD(&ctx->src_queue);
725 INIT_LIST_HEAD(&ctx->dst_queue);
726 ctx->src_queue_cnt = 0;
727 ctx->dst_queue_cnt = 0;
728 /* Get context number */
729 ctx->num = 0;
730 while (dev->ctx[ctx->num]) {
731 ctx->num++;
732 if (ctx->num >= MFC_NUM_CONTEXTS) {
733 mfc_err("Too many open contexts\n");
734 ret = -EBUSY;
735 goto err_no_ctx;
736 }
737 }
738 /* Mark context as idle */
7fb89eca 739 clear_work_bit_irqsave(ctx);
af935746
KD		 740 dev->ctx[ctx->num] = ctx;
741 if (s5p_mfc_get_node_type(file) == MFCNODE_DECODER) {
742 ctx->type = MFCINST_DECODER;
743 ctx->c_ops = get_dec_codec_ops();
43a1ea1f 744 s5p_mfc_dec_init(ctx);
af935746
KD		 745 /* Setup ctrl handler */
746 ret = s5p_mfc_dec_ctrls_setup(ctx);
747 if (ret) {
748 mfc_err("Failed to setup mfc controls\n");
749 goto err_ctrls_setup;
750 }
751 } else if (s5p_mfc_get_node_type(file) == MFCNODE_ENCODER) {
752 ctx->type = MFCINST_ENCODER;
753 ctx->c_ops = get_enc_codec_ops();
754 /* only for encoder */
755 INIT_LIST_HEAD(&ctx->ref_queue);
756 ctx->ref_queue_cnt = 0;
43a1ea1f 757 s5p_mfc_enc_init(ctx);
af935746
KD		 758 /* Setup ctrl handler */
759 ret = s5p_mfc_enc_ctrls_setup(ctx);
760 if (ret) {
761 mfc_err("Failed to setup mfc controls\n");
762 goto err_ctrls_setup;
763 }
764 } else {
765 ret = -ENOENT;
766 goto err_bad_node;
767 }
768 ctx->fh.ctrl_handler = &ctx->ctrl_handler;
769 ctx->inst_no = -1;
770 /* Load firmware if this is the first instance */
771 if (dev->num_inst == 1) {
772 dev->watchdog_timer.expires = jiffies +
773 msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
774 add_timer(&dev->watchdog_timer);
775 ret = s5p_mfc_power_on();
776 if (ret < 0) {
777 mfc_err("power on failed\n");
778 goto err_pwr_enable;
779 }
780 s5p_mfc_clock_on();
2e731e44
KD		 781 ret = s5p_mfc_load_firmware(dev);
782 if (ret) {
783 s5p_mfc_clock_off();
784 goto err_load_fw;
785 }
af935746
KD		 786 /* Init the FW */
787 ret = s5p_mfc_init_hw(dev);
2e731e44 788 s5p_mfc_clock_off();
af935746
KD		 789 if (ret)
790 goto err_init_hw;
af935746
KD		 791 }
792 /* Init videobuf2 queue for CAPTURE */
793 q = &ctx->vq_dst;
794 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
795 q->drv_priv = &ctx->fh;
796 if (s5p_mfc_get_node_type(file) == MFCNODE_DECODER) {
797 q->io_modes = VB2_MMAP;
798 q->ops = get_dec_queue_ops();
799 } else if (s5p_mfc_get_node_type(file) == MFCNODE_ENCODER) {
800 q->io_modes = VB2_MMAP | VB2_USERPTR;
801 q->ops = get_enc_queue_ops();
802 } else {
803 ret = -ENOENT;
804 goto err_queue_init;
805 }
806 q->mem_ops = (struct vb2_mem_ops *)&vb2_dma_contig_memops;
6aa69f99 807 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
af935746
KD		 808 ret = vb2_queue_init(q);
809 if (ret) {
810 mfc_err("Failed to initialize videobuf2 queue(capture)\n");
811 goto err_queue_init;
812 }
813 /* Init videobuf2 queue for OUTPUT */
814 q = &ctx->vq_src;
815 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
816 q->io_modes = VB2_MMAP;
817 q->drv_priv = &ctx->fh;
818 if (s5p_mfc_get_node_type(file) == MFCNODE_DECODER) {
819 q->io_modes = VB2_MMAP;
820 q->ops = get_dec_queue_ops();
821 } else if (s5p_mfc_get_node_type(file) == MFCNODE_ENCODER) {
822 q->io_modes = VB2_MMAP | VB2_USERPTR;
823 q->ops = get_enc_queue_ops();
824 } else {
825 ret = -ENOENT;
826 goto err_queue_init;
827 }
828 q->mem_ops = (struct vb2_mem_ops *)&vb2_dma_contig_memops;
6aa69f99 829 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
af935746
KD		 830 ret = vb2_queue_init(q);
831 if (ret) {
832 mfc_err("Failed to initialize videobuf2 queue(output)\n");
833 goto err_queue_init;
834 }
835 init_waitqueue_head(&ctx->queue);
bc738301 836 mutex_unlock(&dev->mfc_mutex);
af935746
KD		 837 mfc_debug_leave();
838 return ret;
839 /* Deinit when failure occured */
840err_queue_init:
2e731e44
KD		 841 if (dev->num_inst == 1)
842 s5p_mfc_deinit_hw(dev);
af935746 843err_init_hw:
2e731e44 844err_load_fw:
af935746
KD		 845err_pwr_enable:
846 if (dev->num_inst == 1) {
847 if (s5p_mfc_power_off() < 0)
848 mfc_err("power off failed\n");
1b73ba0b 849 del_timer_sync(&dev->watchdog_timer);
af935746
KD		 850 }
851err_ctrls_setup:
852 s5p_mfc_dec_ctrls_delete(ctx);
853err_bad_node:
1b73ba0b 854 dev->ctx[ctx->num] = NULL;
af935746
KD		 855err_no_ctx:
856 v4l2_fh_del(&ctx->fh);
857 v4l2_fh_exit(&ctx->fh);
858 kfree(ctx);
859err_alloc:
860 dev->num_inst--;
bc738301 861 mutex_unlock(&dev->mfc_mutex);
af935746
KD		 862 mfc_debug_leave();
863 return ret;
864}
865
866/* Release MFC context */
867static int s5p_mfc_release(struct file *file)
868{
869 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
870 struct s5p_mfc_dev *dev = ctx->dev;
af935746
KD		 871
872 mfc_debug_enter();
bc738301 873 mutex_lock(&dev->mfc_mutex);
af935746
KD		 874 s5p_mfc_clock_on();
875 vb2_queue_release(&ctx->vq_src);
876 vb2_queue_release(&ctx->vq_dst);
877 /* Mark context as idle */
7fb89eca 878 clear_work_bit_irqsave(ctx);
af935746
KD		 879 /* If instance was initialised then
880 * return instance and free reosurces */
881 if (ctx->inst_no != MFC_NO_INSTANCE_SET) {
882 mfc_debug(2, "Has to free instance\n");
883 ctx->state = MFCINST_RETURN_INST;
7fb89eca 884 set_work_bit_irqsave(ctx);
af935746 885 s5p_mfc_clean_ctx_int_flags(ctx);
43a1ea1f 886 s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
af935746
KD		 887 /* Wait until instance is returned or timeout occured */
888 if (s5p_mfc_wait_for_done_ctx
43a1ea1f 889 (ctx, S5P_MFC_R2H_CMD_CLOSE_INSTANCE_RET, 0)) {
af935746
KD		 890 s5p_mfc_clock_off();
891 mfc_err("Err returning instance\n");
892 }
893 mfc_debug(2, "After free instance\n");
894 /* Free resources */
43a1ea1f
AK		 895 s5p_mfc_hw_call(dev->mfc_ops, release_codec_buffers, ctx);
896 s5p_mfc_hw_call(dev->mfc_ops, release_instance_buffer, ctx);
af935746 897 if (ctx->type == MFCINST_DECODER)
43a1ea1f
AK		 898 s5p_mfc_hw_call(dev->mfc_ops, release_dec_desc_buffer,
899 ctx);
af935746
KD		 900
901 ctx->inst_no = MFC_NO_INSTANCE_SET;
902 }
903 /* hardware locking scheme */
904 if (dev->curr_ctx == ctx->num)
905 clear_bit(0, &dev->hw_lock);
906 dev->num_inst--;
907 if (dev->num_inst == 0) {
2e731e44 908 mfc_debug(2, "Last instance\n");
43a1ea1f 909 s5p_mfc_deinit_hw(dev);
af935746
KD		 910 del_timer_sync(&dev->watchdog_timer);
911 if (s5p_mfc_power_off() < 0)
912 mfc_err("Power off failed\n");
913 }
914 mfc_debug(2, "Shutting down clock\n");
915 s5p_mfc_clock_off();
1259762f 916 dev->ctx[ctx->num] = NULL;
af935746
KD		 917 s5p_mfc_dec_ctrls_delete(ctx);
918 v4l2_fh_del(&ctx->fh);
919 v4l2_fh_exit(&ctx->fh);
920 kfree(ctx);
921 mfc_debug_leave();
bc738301 922 mutex_unlock(&dev->mfc_mutex);
af935746
KD		 923 return 0;
924}
925
926/* Poll */
927static unsigned int s5p_mfc_poll(struct file *file,
928 struct poll_table_struct *wait)
929{
930 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
931 struct s5p_mfc_dev *dev = ctx->dev;
932 struct vb2_queue *src_q, *dst_q;
933 struct vb2_buffer *src_vb = NULL, *dst_vb = NULL;
934 unsigned int rc = 0;
935 unsigned long flags;
936
bc738301 937 mutex_lock(&dev->mfc_mutex);
af935746
KD		 938 src_q = &ctx->vq_src;
939 dst_q = &ctx->vq_dst;
940 /*
941 * There has to be at least one buffer queued on each queued_list, which
942 * means either in driver already or waiting for driver to claim it
943 * and start processing.
944 */
945 if ((!src_q->streaming || list_empty(&src_q->queued_list))
946 && (!dst_q->streaming || list_empty(&dst_q->queued_list))) {
947 rc = POLLERR;
948 goto end;
949 }
950 mutex_unlock(&dev->mfc_mutex);
f9f715a9 951 poll_wait(file, &ctx->fh.wait, wait);
af935746
KD		 952 poll_wait(file, &src_q->done_wq, wait);
953 poll_wait(file, &dst_q->done_wq, wait);
954 mutex_lock(&dev->mfc_mutex);
f9f715a9
AH		 955 if (v4l2_event_pending(&ctx->fh))
956 rc |= POLLPRI;
af935746
KD		 957 spin_lock_irqsave(&src_q->done_lock, flags);
958 if (!list_empty(&src_q->done_list))
959 src_vb = list_first_entry(&src_q->done_list, struct vb2_buffer,
960 done_entry);
961 if (src_vb && (src_vb->state == VB2_BUF_STATE_DONE
962 || src_vb->state == VB2_BUF_STATE_ERROR))
963 rc |= POLLOUT | POLLWRNORM;
964 spin_unlock_irqrestore(&src_q->done_lock, flags);
965 spin_lock_irqsave(&dst_q->done_lock, flags);
966 if (!list_empty(&dst_q->done_list))
967 dst_vb = list_first_entry(&dst_q->done_list, struct vb2_buffer,
968 done_entry);
969 if (dst_vb && (dst_vb->state == VB2_BUF_STATE_DONE
970 || dst_vb->state == VB2_BUF_STATE_ERROR))
971 rc |= POLLIN | POLLRDNORM;
972 spin_unlock_irqrestore(&dst_q->done_lock, flags);
973end:
bc738301 974 mutex_unlock(&dev->mfc_mutex);
af935746
KD		 975 return rc;
976}
977
978/* Mmap */
979static int s5p_mfc_mmap(struct file *file, struct vm_area_struct *vma)
980{
981 struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
bc738301 982 struct s5p_mfc_dev *dev = ctx->dev;
af935746
KD		 983 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
984 int ret;
bc738301
HV		 985
986 if (mutex_lock_interruptible(&dev->mfc_mutex))
987 return -ERESTARTSYS;
af935746
KD		 988 if (offset < DST_QUEUE_OFF_BASE) {
989 mfc_debug(2, "mmaping source\n");
990 ret = vb2_mmap(&ctx->vq_src, vma);
991 } else { /* capture */
992 mfc_debug(2, "mmaping destination\n");
993 vma->vm_pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT);
994 ret = vb2_mmap(&ctx->vq_dst, vma);
995 }
bc738301 996 mutex_unlock(&dev->mfc_mutex);
af935746
KD		 997 return ret;
998}
999
1000/* v4l2 ops */
1001static const struct v4l2_file_operations s5p_mfc_fops = {
1002 .owner = THIS_MODULE,
1003 .open = s5p_mfc_open,
1004 .release = s5p_mfc_release,
1005 .poll = s5p_mfc_poll,
1006 .unlocked_ioctl = video_ioctl2,
1007 .mmap = s5p_mfc_mmap,
1008};
1009
1010static int match_child(struct device *dev, void *data)
1011{
1012 if (!dev_name(dev))
1013 return 0;
1014 return !strcmp(dev_name(dev), (char *)data);
1015}
1016
b27a23be
AK		 1017static void *mfc_get_drv_data(struct platform_device *pdev);
1018
6e83e6e2
AK		 1019static int s5p_mfc_alloc_memdevs(struct s5p_mfc_dev *dev)
1020{
65fccab5 1021 unsigned int mem_info[2] = { };
6e83e6e2
AK		 1022
1023 dev->mem_dev_l = devm_kzalloc(&dev->plat_dev->dev,
1024 sizeof(struct device), GFP_KERNEL);
1025 if (!dev->mem_dev_l) {
1026 mfc_err("Not enough memory\n");
1027 return -ENOMEM;
1028 }
1029 device_initialize(dev->mem_dev_l);
1030 of_property_read_u32_array(dev->plat_dev->dev.of_node,
1031 "samsung,mfc-l", mem_info, 2);
1032 if (dma_declare_coherent_memory(dev->mem_dev_l, mem_info[0],
1033 mem_info[0], mem_info[1],
1034 DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0) {
1035 mfc_err("Failed to declare coherent memory for\n"
1036 "MFC device\n");
1037 return -ENOMEM;
1038 }
1039
1040 dev->mem_dev_r = devm_kzalloc(&dev->plat_dev->dev,
1041 sizeof(struct device), GFP_KERNEL);
1042 if (!dev->mem_dev_r) {
1043 mfc_err("Not enough memory\n");
1044 return -ENOMEM;
1045 }
1046 device_initialize(dev->mem_dev_r);
1047 of_property_read_u32_array(dev->plat_dev->dev.of_node,
1048 "samsung,mfc-r", mem_info, 2);
1049 if (dma_declare_coherent_memory(dev->mem_dev_r, mem_info[0],
1050 mem_info[0], mem_info[1],
1051 DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0) {
1052 pr_err("Failed to declare coherent memory for\n"
1053 "MFC device\n");
1054 return -ENOMEM;
1055 }
1056 return 0;
1057}
1058
af935746 1059/* MFC probe function */
1e393e90 1060static int s5p_mfc_probe(struct platform_device *pdev)
af935746
KD		 1061{
1062 struct s5p_mfc_dev *dev;
1063 struct video_device *vfd;
1064 struct resource *res;
1065 int ret;
1066
1067 pr_debug("%s++\n", __func__);
bae061b4 1068 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
af935746
KD		 1069 if (!dev) {
1070 dev_err(&pdev->dev, "Not enough memory for MFC device\n");
1071 return -ENOMEM;
1072 }
1073
1074 spin_lock_init(&dev->irqlock);
1075 spin_lock_init(&dev->condlock);
1076 dev->plat_dev = pdev;
1077 if (!dev->plat_dev) {
1078 dev_err(&pdev->dev, "No platform data specified\n");
d310f478 1079 return -ENODEV;
af935746
KD		 1080 }
1081
b27a23be 1082 dev->variant = mfc_get_drv_data(pdev);
8f532a7f 1083
af935746
KD		 1084 ret = s5p_mfc_init_pm(dev);
1085 if (ret < 0) {
1086 dev_err(&pdev->dev, "failed to get mfc clock source\n");
d310f478 1087 return ret;
af935746
KD		 1088 }
1089
1090 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
af935746 1091
f23999ec
TR		 1092 dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
1093 if (IS_ERR(dev->regs_base))
1094 return PTR_ERR(dev->regs_base);
af935746
KD		 1095
1096 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1097 if (res == NULL) {
1098 dev_err(&pdev->dev, "failed to get irq resource\n");
1099 ret = -ENOENT;
d310f478 1100 goto err_res;
af935746
KD		 1101 }
1102 dev->irq = res->start;
d310f478
SK		 1103 ret = devm_request_irq(&pdev->dev, dev->irq, s5p_mfc_irq,
1104 IRQF_DISABLED, pdev->name, dev);
af935746
KD		 1105 if (ret) {
1106 dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret);
d310f478 1107 goto err_res;
af935746
KD		 1108 }
1109
b27a23be 1110 if (pdev->dev.of_node) {
d68b44e0
WY		 1111 ret = s5p_mfc_alloc_memdevs(dev);
1112 if (ret < 0)
b27a23be 1113 goto err_res;
b27a23be
AK		 1114 } else {
1115 dev->mem_dev_l = device_find_child(&dev->plat_dev->dev,
1116 "s5p-mfc-l", match_child);
1117 if (!dev->mem_dev_l) {
1118 mfc_err("Mem child (L) device get failed\n");
1119 ret = -ENODEV;
1120 goto err_res;
1121 }
1122 dev->mem_dev_r = device_find_child(&dev->plat_dev->dev,
1123 "s5p-mfc-r", match_child);
1124 if (!dev->mem_dev_r) {
1125 mfc_err("Mem child (R) device get failed\n");
1126 ret = -ENODEV;
1127 goto err_res;
1128 }
af935746
KD		 1129 }
1130
1131 dev->alloc_ctx[0] = vb2_dma_contig_init_ctx(dev->mem_dev_l);
ef89fff8 1132 if (IS_ERR(dev->alloc_ctx[0])) {
af935746 1133 ret = PTR_ERR(dev->alloc_ctx[0]);
d310f478 1134 goto err_res;
af935746
KD		 1135 }
1136 dev->alloc_ctx[1] = vb2_dma_contig_init_ctx(dev->mem_dev_r);
ef89fff8 1137 if (IS_ERR(dev->alloc_ctx[1])) {
af935746
KD		 1138 ret = PTR_ERR(dev->alloc_ctx[1]);
1139 goto err_mem_init_ctx_1;
1140 }
1141
1142 mutex_init(&dev->mfc_mutex);
1143
2e731e44
KD		 1144 ret = s5p_mfc_alloc_firmware(dev);
1145 if (ret)
1146 goto err_alloc_fw;
1147
af935746
KD		 1148 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
1149 if (ret)
1150 goto err_v4l2_dev_reg;
1151 init_waitqueue_head(&dev->queue);
1152
1153 /* decoder */
1154 vfd = video_device_alloc();
1155 if (!vfd) {
1156 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
1157 ret = -ENOMEM;
1158 goto err_dec_alloc;
1159 }
1160 vfd->fops = &s5p_mfc_fops,
1161 vfd->ioctl_ops = get_dec_v4l2_ioctl_ops();
1162 vfd->release = video_device_release,
1163 vfd->lock = &dev->mfc_mutex;
1164 vfd->v4l2_dev = &dev->v4l2_dev;
954f340f 1165 vfd->vfl_dir = VFL_DIR_M2M;
af935746
KD		 1166 snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_DEC_NAME);
1167 dev->vfd_dec = vfd;
1168 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
1169 if (ret) {
1170 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1171 video_device_release(vfd);
1172 goto err_dec_reg;
1173 }
1174 v4l2_info(&dev->v4l2_dev,
1175 "decoder registered as /dev/video%d\n", vfd->num);
1176 video_set_drvdata(vfd, dev);
1177
1178 /* encoder */
1179 vfd = video_device_alloc();
1180 if (!vfd) {
1181 v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
1182 ret = -ENOMEM;
1183 goto err_enc_alloc;
1184 }
1185 vfd->fops = &s5p_mfc_fops,
1186 vfd->ioctl_ops = get_enc_v4l2_ioctl_ops();
1187 vfd->release = video_device_release,
1188 vfd->lock = &dev->mfc_mutex;
1189 vfd->v4l2_dev = &dev->v4l2_dev;
cdcf45e7 1190 vfd->vfl_dir = VFL_DIR_M2M;
af935746
KD		 1191 snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_ENC_NAME);
1192 dev->vfd_enc = vfd;
1193 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
1194 if (ret) {
1195 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1196 video_device_release(vfd);
1197 goto err_enc_reg;
1198 }
1199 v4l2_info(&dev->v4l2_dev,
1200 "encoder registered as /dev/video%d\n", vfd->num);
1201 video_set_drvdata(vfd, dev);
1202 platform_set_drvdata(pdev, dev);
1203
1204 dev->hw_lock = 0;
1205 dev->watchdog_workqueue = create_singlethread_workqueue(S5P_MFC_NAME);
1206 INIT_WORK(&dev->watchdog_work, s5p_mfc_watchdog_worker);
1207 atomic_set(&dev->watchdog_cnt, 0);
1208 init_timer(&dev->watchdog_timer);
1209 dev->watchdog_timer.data = (unsigned long)dev;
1210 dev->watchdog_timer.function = s5p_mfc_watchdog;
1211
43a1ea1f
AK		 1212 /* Initialize HW ops and commands based on MFC version */
1213 s5p_mfc_init_hw_ops(dev);
1214 s5p_mfc_init_hw_cmds(dev);
1215
af935746
KD		 1216 pr_debug("%s--\n", __func__);
1217 return 0;
1218
1219/* Deinit MFC if probe had failed */
1220err_enc_reg:
1221 video_device_release(dev->vfd_enc);
1222err_enc_alloc:
1223 video_unregister_device(dev->vfd_dec);
1224err_dec_reg:
1225 video_device_release(dev->vfd_dec);
1226err_dec_alloc:
1227 v4l2_device_unregister(&dev->v4l2_dev);
1228err_v4l2_dev_reg:
2e731e44
KD		 1229 s5p_mfc_release_firmware(dev);
1230err_alloc_fw:
af935746
KD		 1231 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]);
1232err_mem_init_ctx_1:
1233 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);
af935746
KD		 1234err_res:
1235 s5p_mfc_final_pm(dev);
d310f478 1236
af935746
KD		 1237 pr_debug("%s-- with error\n", __func__);
1238 return ret;
1239
1240}
1241
1242/* Remove the driver */
4c62e976 1243static int s5p_mfc_remove(struct platform_device *pdev)
af935746
KD		 1244{
1245 struct s5p_mfc_dev *dev = platform_get_drvdata(pdev);
1246
1247 v4l2_info(&dev->v4l2_dev, "Removing %s\n", pdev->name);
1248
1249 del_timer_sync(&dev->watchdog_timer);
1250 flush_workqueue(dev->watchdog_workqueue);
1251 destroy_workqueue(dev->watchdog_workqueue);
1252
1253 video_unregister_device(dev->vfd_enc);
1254 video_unregister_device(dev->vfd_dec);
1255 v4l2_device_unregister(&dev->v4l2_dev);
2e731e44 1256 s5p_mfc_release_firmware(dev);
af935746
KD		 1257 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);
1258 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]);
6e83e6e2
AK		 1259 if (pdev->dev.of_node) {
1260 put_device(dev->mem_dev_l);
1261 put_device(dev->mem_dev_r);
1262 }
af935746 1263
af935746 1264 s5p_mfc_final_pm(dev);
af935746
KD		 1265 return 0;
1266}
1267
1268#ifdef CONFIG_PM_SLEEP
1269
1270static int s5p_mfc_suspend(struct device *dev)
1271{
1272 struct platform_device *pdev = to_platform_device(dev);
1273 struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
1274 int ret;
1275
1276 if (m_dev->num_inst == 0)
1277 return 0;
81c9bcfb 1278
af935746
KD		 1279 if (test_and_set_bit(0, &m_dev->enter_suspend) != 0) {
1280 mfc_err("Error: going to suspend for a second time\n");
1281 return -EIO;
1282 }
1283
1284 /* Check if we're processing then wait if it necessary. */
1285 while (test_and_set_bit(0, &m_dev->hw_lock) != 0) {
1286 /* Try and lock the HW */
1287 /* Wait on the interrupt waitqueue */
1288 ret = wait_event_interruptible_timeout(m_dev->queue,
1289 m_dev->int_cond || m_dev->ctx[m_dev->curr_ctx]->int_cond,
1290 msecs_to_jiffies(MFC_INT_TIMEOUT));
1291
1292 if (ret == 0) {
1293 mfc_err("Waiting for hardware to finish timed out\n");
1294 return -EIO;
1295 }
1296 }
81c9bcfb
SK		 1297
1298 return s5p_mfc_sleep(m_dev);
af935746
KD		 1299}
1300
1301static int s5p_mfc_resume(struct device *dev)
1302{
1303 struct platform_device *pdev = to_platform_device(dev);
1304 struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
1305
1306 if (m_dev->num_inst == 0)
1307 return 0;
1308 return s5p_mfc_wakeup(m_dev);
1309}
1310#endif
1311
1312#ifdef CONFIG_PM_RUNTIME
1313static int s5p_mfc_runtime_suspend(struct device *dev)
1314{
1315 struct platform_device *pdev = to_platform_device(dev);
1316 struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
1317
1318 atomic_set(&m_dev->pm.power, 0);
1319 return 0;
1320}
1321
1322static int s5p_mfc_runtime_resume(struct device *dev)
1323{
1324 struct platform_device *pdev = to_platform_device(dev);
1325 struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
1326 int pre_power;
1327
1328 if (!m_dev->alloc_ctx)
1329 return 0;
1330 pre_power = atomic_read(&m_dev->pm.power);
1331 atomic_set(&m_dev->pm.power, 1);
1332 return 0;
1333}
1334#endif
1335
1336/* Power management */
1337static const struct dev_pm_ops s5p_mfc_pm_ops = {
1338 SET_SYSTEM_SLEEP_PM_OPS(s5p_mfc_suspend, s5p_mfc_resume)
1339 SET_RUNTIME_PM_OPS(s5p_mfc_runtime_suspend, s5p_mfc_runtime_resume,
1340 NULL)
1341};
1342
8f532a7f
AK		 1343struct s5p_mfc_buf_size_v5 mfc_buf_size_v5 = {
1344 .h264_ctx = MFC_H264_CTX_BUF_SIZE,
1345 .non_h264_ctx = MFC_CTX_BUF_SIZE,
1346 .dsc = DESC_BUF_SIZE,
1347 .shm = SHARED_BUF_SIZE,
1348};
1349
1350struct s5p_mfc_buf_size buf_size_v5 = {
1351 .fw = MAX_FW_SIZE,
1352 .cpb = MAX_CPB_SIZE,
1353 .priv = &mfc_buf_size_v5,
1354};
1355
1356struct s5p_mfc_buf_align mfc_buf_align_v5 = {
1357 .base = MFC_BASE_ALIGN_ORDER,
1358};
1359
1360static struct s5p_mfc_variant mfc_drvdata_v5 = {
1361 .version = MFC_VERSION,
1362 .port_num = MFC_NUM_PORTS,
1363 .buf_size = &buf_size_v5,
1364 .buf_align = &mfc_buf_align_v5,
f96f3cfa
JP		 1365 .mclk_name = "sclk_mfc",
1366 .fw_name = "s5p-mfc.fw",
1367};
1368
1369struct s5p_mfc_buf_size_v6 mfc_buf_size_v6 = {
1370 .dev_ctx = MFC_CTX_BUF_SIZE_V6,
1371 .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V6,
1372 .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V6,
1373 .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V6,
1374 .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V6,
1375};
1376
1377struct s5p_mfc_buf_size buf_size_v6 = {
1378 .fw = MAX_FW_SIZE_V6,
1379 .cpb = MAX_CPB_SIZE_V6,
1380 .priv = &mfc_buf_size_v6,
1381};
1382
1383struct s5p_mfc_buf_align mfc_buf_align_v6 = {
1384 .base = 0,
1385};
1386
1387static struct s5p_mfc_variant mfc_drvdata_v6 = {
1388 .version = MFC_VERSION_V6,
1389 .port_num = MFC_NUM_PORTS_V6,
1390 .buf_size = &buf_size_v6,
1391 .buf_align = &mfc_buf_align_v6,
1392 .mclk_name = "aclk_333",
1393 .fw_name = "s5p-mfc-v6.fw",
8f532a7f
AK		 1394};
1395
1396static struct platform_device_id mfc_driver_ids[] = {
1397 {
1398 .name = "s5p-mfc",
1399 .driver_data = (unsigned long)&mfc_drvdata_v5,
f96f3cfa
JP		 1400 }, {
1401 .name = "s5p-mfc-v5",
1402 .driver_data = (unsigned long)&mfc_drvdata_v5,
1403 }, {
1404 .name = "s5p-mfc-v6",
1405 .driver_data = (unsigned long)&mfc_drvdata_v6,
8f532a7f
AK		 1406 },
1407 {},
1408};
1409MODULE_DEVICE_TABLE(platform, mfc_driver_ids);
1410
b27a23be
AK		 1411static const struct of_device_id exynos_mfc_match[] = {
1412 {
1413 .compatible = "samsung,mfc-v5",
1414 .data = &mfc_drvdata_v5,
1415 }, {
1416 .compatible = "samsung,mfc-v6",
1417 .data = &mfc_drvdata_v6,
1418 },
1419 {},
1420};
1421MODULE_DEVICE_TABLE(of, exynos_mfc_match);
1422
1423static void *mfc_get_drv_data(struct platform_device *pdev)
1424{
1425 struct s5p_mfc_variant *driver_data = NULL;
1426
1427 if (pdev->dev.of_node) {
1428 const struct of_device_id *match;
1429 match = of_match_node(of_match_ptr(exynos_mfc_match),
1430 pdev->dev.of_node);
1431 if (match)
1432 driver_data = (struct s5p_mfc_variant *)match->data;
1433 } else {
1434 driver_data = (struct s5p_mfc_variant *)
1435 platform_get_device_id(pdev)->driver_data;
1436 }
1437 return driver_data;
1438}
1439
1e393e90 1440static struct platform_driver s5p_mfc_driver = {
8f532a7f 1441 .probe = s5p_mfc_probe,
4c62e976 1442 .remove = s5p_mfc_remove,
8f532a7f 1443 .id_table = mfc_driver_ids,
af935746
KD		 1444 .driver = {
1445 .name = S5P_MFC_NAME,
1446 .owner = THIS_MODULE,
b27a23be
AK		 1447 .pm = &s5p_mfc_pm_ops,
1448 .of_match_table = exynos_mfc_match,
af935746
KD		 1449 },
1450};
1451
1d6629b1 1452module_platform_driver(s5p_mfc_driver);
af935746
KD		 1453
1454MODULE_LICENSE("GPL");
1455MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
1456MODULE_DESCRIPTION("Samsung S5P Multi Format Codec V4L2 driver");
1457
Linux kernel - Deliverables
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