Commit | Line | Data |
---|---|---|
96d8eab5 PO |
1 | /* |
2 | * A virtual v4l2-mem2mem example device. | |
3 | * | |
4 | * This is a virtual device driver for testing mem-to-mem videobuf framework. | |
5 | * It simulates a device that uses memory buffers for both source and | |
6 | * destination, processes the data and issues an "irq" (simulated by a timer). | |
7 | * The device is capable of multi-instance, multi-buffer-per-transaction | |
8 | * operation (via the mem2mem framework). | |
9 | * | |
10 | * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. | |
95072084 | 11 | * Pawel Osciak, <pawel@osciak.com> |
96d8eab5 PO |
12 | * Marek Szyprowski, <m.szyprowski@samsung.com> |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by the | |
16 | * Free Software Foundation; either version 2 of the | |
17 | * License, or (at your option) any later version | |
18 | */ | |
19 | #include <linux/module.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/fs.h> | |
96d8eab5 PO |
22 | #include <linux/timer.h> |
23 | #include <linux/sched.h> | |
6b46c397 | 24 | #include <linux/slab.h> |
96d8eab5 PO |
25 | |
26 | #include <linux/platform_device.h> | |
27 | #include <media/v4l2-mem2mem.h> | |
28 | #include <media/v4l2-device.h> | |
29 | #include <media/v4l2-ioctl.h> | |
d3dd59c2 | 30 | #include <media/v4l2-ctrls.h> |
97a3c902 | 31 | #include <media/v4l2-event.h> |
d80ee38c | 32 | #include <media/videobuf2-vmalloc.h> |
96d8eab5 PO |
33 | |
34 | #define MEM2MEM_TEST_MODULE_NAME "mem2mem-testdev" | |
35 | ||
36 | MODULE_DESCRIPTION("Virtual device for mem2mem framework testing"); | |
95072084 | 37 | MODULE_AUTHOR("Pawel Osciak, <pawel@osciak.com>"); |
96d8eab5 | 38 | MODULE_LICENSE("GPL"); |
1990d50b | 39 | MODULE_VERSION("0.1.1"); |
96d8eab5 | 40 | |
d95d7c64 HV |
41 | static unsigned debug; |
42 | module_param(debug, uint, 0644); | |
43 | MODULE_PARM_DESC(debug, "activates debug info"); | |
44 | ||
96d8eab5 PO |
45 | #define MIN_W 32 |
46 | #define MIN_H 32 | |
47 | #define MAX_W 640 | |
48 | #define MAX_H 480 | |
9ce3ce4d | 49 | #define DIM_ALIGN_MASK 7 /* 8-byte alignment for line length */ |
96d8eab5 PO |
50 | |
51 | /* Flags that indicate a format can be used for capture/output */ | |
52 | #define MEM2MEM_CAPTURE (1 << 0) | |
53 | #define MEM2MEM_OUTPUT (1 << 1) | |
54 | ||
55 | #define MEM2MEM_NAME "m2m-testdev" | |
56 | ||
57 | /* Per queue */ | |
58 | #define MEM2MEM_DEF_NUM_BUFS VIDEO_MAX_FRAME | |
59 | /* In bytes, per queue */ | |
60 | #define MEM2MEM_VID_MEM_LIMIT (16 * 1024 * 1024) | |
61 | ||
62 | /* Default transaction time in msec */ | |
63 | #define MEM2MEM_DEF_TRANSTIME 1000 | |
64 | /* Default number of buffers per transaction */ | |
65 | #define MEM2MEM_DEF_TRANSLEN 1 | |
66 | #define MEM2MEM_COLOR_STEP (0xff >> 4) | |
67 | #define MEM2MEM_NUM_TILES 8 | |
68 | ||
80072871 TM |
69 | /* Flags that indicate processing mode */ |
70 | #define MEM2MEM_HFLIP (1 << 0) | |
71 | #define MEM2MEM_VFLIP (1 << 1) | |
72 | ||
96d8eab5 | 73 | #define dprintk(dev, fmt, arg...) \ |
d95d7c64 | 74 | v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) |
96d8eab5 PO |
75 | |
76 | ||
32872831 | 77 | static void m2mtest_dev_release(struct device *dev) |
96d8eab5 PO |
78 | {} |
79 | ||
80 | static struct platform_device m2mtest_pdev = { | |
81 | .name = MEM2MEM_NAME, | |
82 | .dev.release = m2mtest_dev_release, | |
83 | }; | |
84 | ||
85 | struct m2mtest_fmt { | |
86 | char *name; | |
87 | u32 fourcc; | |
88 | int depth; | |
89 | /* Types the format can be used for */ | |
90 | u32 types; | |
91 | }; | |
92 | ||
93 | static struct m2mtest_fmt formats[] = { | |
94 | { | |
95 | .name = "RGB565 (BE)", | |
96 | .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ | |
97 | .depth = 16, | |
98 | /* Both capture and output format */ | |
99 | .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, | |
100 | }, | |
101 | { | |
102 | .name = "4:2:2, packed, YUYV", | |
103 | .fourcc = V4L2_PIX_FMT_YUYV, | |
104 | .depth = 16, | |
105 | /* Output-only format */ | |
106 | .types = MEM2MEM_OUTPUT, | |
107 | }, | |
108 | }; | |
109 | ||
d3dd59c2 HV |
110 | #define NUM_FORMATS ARRAY_SIZE(formats) |
111 | ||
96d8eab5 PO |
112 | /* Per-queue, driver-specific private data */ |
113 | struct m2mtest_q_data { | |
114 | unsigned int width; | |
115 | unsigned int height; | |
116 | unsigned int sizeimage; | |
117 | struct m2mtest_fmt *fmt; | |
118 | }; | |
119 | ||
120 | enum { | |
121 | V4L2_M2M_SRC = 0, | |
122 | V4L2_M2M_DST = 1, | |
123 | }; | |
124 | ||
d3dd59c2 HV |
125 | #define V4L2_CID_TRANS_TIME_MSEC (V4L2_CID_USER_BASE + 0x1000) |
126 | #define V4L2_CID_TRANS_NUM_BUFS (V4L2_CID_USER_BASE + 0x1001) | |
96d8eab5 PO |
127 | |
128 | static struct m2mtest_fmt *find_format(struct v4l2_format *f) | |
129 | { | |
130 | struct m2mtest_fmt *fmt; | |
131 | unsigned int k; | |
132 | ||
133 | for (k = 0; k < NUM_FORMATS; k++) { | |
134 | fmt = &formats[k]; | |
135 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
136 | break; | |
137 | } | |
138 | ||
139 | if (k == NUM_FORMATS) | |
140 | return NULL; | |
141 | ||
142 | return &formats[k]; | |
143 | } | |
144 | ||
145 | struct m2mtest_dev { | |
146 | struct v4l2_device v4l2_dev; | |
147 | struct video_device *vfd; | |
148 | ||
149 | atomic_t num_inst; | |
150 | struct mutex dev_mutex; | |
151 | spinlock_t irqlock; | |
152 | ||
153 | struct timer_list timer; | |
154 | ||
155 | struct v4l2_m2m_dev *m2m_dev; | |
156 | }; | |
157 | ||
158 | struct m2mtest_ctx { | |
d3dd59c2 | 159 | struct v4l2_fh fh; |
96d8eab5 PO |
160 | struct m2mtest_dev *dev; |
161 | ||
d3dd59c2 HV |
162 | struct v4l2_ctrl_handler hdl; |
163 | ||
96d8eab5 PO |
164 | /* Processed buffers in this transaction */ |
165 | u8 num_processed; | |
166 | ||
167 | /* Transaction length (i.e. how many buffers per transaction) */ | |
168 | u32 translen; | |
169 | /* Transaction time (i.e. simulated processing time) in milliseconds */ | |
170 | u32 transtime; | |
171 | ||
172 | /* Abort requested by m2m */ | |
173 | int aborting; | |
174 | ||
80072871 TM |
175 | /* Processing mode */ |
176 | int mode; | |
177 | ||
47556ffa HV |
178 | enum v4l2_colorspace colorspace; |
179 | ||
96d8eab5 | 180 | struct v4l2_m2m_ctx *m2m_ctx; |
9f4161a6 TM |
181 | |
182 | /* Source and destination queue data */ | |
183 | struct m2mtest_q_data q_data[2]; | |
96d8eab5 PO |
184 | }; |
185 | ||
d3dd59c2 HV |
186 | static inline struct m2mtest_ctx *file2ctx(struct file *file) |
187 | { | |
188 | return container_of(file->private_data, struct m2mtest_ctx, fh); | |
189 | } | |
190 | ||
9f4161a6 TM |
191 | static struct m2mtest_q_data *get_q_data(struct m2mtest_ctx *ctx, |
192 | enum v4l2_buf_type type) | |
193 | { | |
194 | switch (type) { | |
195 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
196 | return &ctx->q_data[V4L2_M2M_SRC]; | |
197 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
198 | return &ctx->q_data[V4L2_M2M_DST]; | |
199 | default: | |
200 | BUG(); | |
201 | } | |
202 | return NULL; | |
203 | } | |
204 | ||
205 | ||
96d8eab5 | 206 | static int device_process(struct m2mtest_ctx *ctx, |
d80ee38c MS |
207 | struct vb2_buffer *in_vb, |
208 | struct vb2_buffer *out_vb) | |
96d8eab5 PO |
209 | { |
210 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 211 | struct m2mtest_q_data *q_data; |
96d8eab5 PO |
212 | u8 *p_in, *p_out; |
213 | int x, y, t, w; | |
214 | int tile_w, bytes_left; | |
d80ee38c | 215 | int width, height, bytesperline; |
96d8eab5 | 216 | |
9f4161a6 | 217 | q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); |
d80ee38c MS |
218 | |
219 | width = q_data->width; | |
220 | height = q_data->height; | |
221 | bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
222 | ||
223 | p_in = vb2_plane_vaddr(in_vb, 0); | |
224 | p_out = vb2_plane_vaddr(out_vb, 0); | |
96d8eab5 PO |
225 | if (!p_in || !p_out) { |
226 | v4l2_err(&dev->v4l2_dev, | |
227 | "Acquiring kernel pointers to buffers failed\n"); | |
228 | return -EFAULT; | |
229 | } | |
230 | ||
d80ee38c | 231 | if (vb2_plane_size(in_vb, 0) > vb2_plane_size(out_vb, 0)) { |
96d8eab5 PO |
232 | v4l2_err(&dev->v4l2_dev, "Output buffer is too small\n"); |
233 | return -EINVAL; | |
234 | } | |
235 | ||
d80ee38c | 236 | tile_w = (width * (q_data[V4L2_M2M_DST].fmt->depth >> 3)) |
96d8eab5 | 237 | / MEM2MEM_NUM_TILES; |
d80ee38c | 238 | bytes_left = bytesperline - tile_w * MEM2MEM_NUM_TILES; |
96d8eab5 PO |
239 | w = 0; |
240 | ||
d95d7c64 HV |
241 | memcpy(&out_vb->v4l2_buf.timestamp, |
242 | &in_vb->v4l2_buf.timestamp, | |
243 | sizeof(struct timeval)); | |
244 | ||
80072871 TM |
245 | switch (ctx->mode) { |
246 | case MEM2MEM_HFLIP | MEM2MEM_VFLIP: | |
247 | p_out += bytesperline * height - bytes_left; | |
248 | for (y = 0; y < height; ++y) { | |
249 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
250 | if (w & 0x1) { | |
251 | for (x = 0; x < tile_w; ++x) | |
252 | *--p_out = *p_in++ + | |
253 | MEM2MEM_COLOR_STEP; | |
254 | } else { | |
255 | for (x = 0; x < tile_w; ++x) | |
256 | *--p_out = *p_in++ - | |
257 | MEM2MEM_COLOR_STEP; | |
258 | } | |
259 | ++w; | |
96d8eab5 | 260 | } |
80072871 TM |
261 | p_in += bytes_left; |
262 | p_out -= bytes_left; | |
263 | } | |
264 | break; | |
265 | ||
266 | case MEM2MEM_HFLIP: | |
267 | for (y = 0; y < height; ++y) { | |
268 | p_out += MEM2MEM_NUM_TILES * tile_w; | |
269 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
270 | if (w & 0x01) { | |
271 | for (x = 0; x < tile_w; ++x) | |
272 | *--p_out = *p_in++ + | |
273 | MEM2MEM_COLOR_STEP; | |
274 | } else { | |
275 | for (x = 0; x < tile_w; ++x) | |
276 | *--p_out = *p_in++ - | |
277 | MEM2MEM_COLOR_STEP; | |
278 | } | |
279 | ++w; | |
280 | } | |
281 | p_in += bytes_left; | |
282 | p_out += bytesperline; | |
283 | } | |
284 | break; | |
285 | ||
286 | case MEM2MEM_VFLIP: | |
287 | p_out += bytesperline * (height - 1); | |
288 | for (y = 0; y < height; ++y) { | |
289 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
290 | if (w & 0x1) { | |
291 | for (x = 0; x < tile_w; ++x) | |
292 | *p_out++ = *p_in++ + | |
293 | MEM2MEM_COLOR_STEP; | |
294 | } else { | |
295 | for (x = 0; x < tile_w; ++x) | |
296 | *p_out++ = *p_in++ - | |
297 | MEM2MEM_COLOR_STEP; | |
298 | } | |
299 | ++w; | |
300 | } | |
301 | p_in += bytes_left; | |
302 | p_out += bytes_left - 2 * bytesperline; | |
303 | } | |
304 | break; | |
305 | ||
306 | default: | |
307 | for (y = 0; y < height; ++y) { | |
308 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
309 | if (w & 0x1) { | |
310 | for (x = 0; x < tile_w; ++x) | |
311 | *p_out++ = *p_in++ + | |
312 | MEM2MEM_COLOR_STEP; | |
313 | } else { | |
314 | for (x = 0; x < tile_w; ++x) | |
315 | *p_out++ = *p_in++ - | |
316 | MEM2MEM_COLOR_STEP; | |
317 | } | |
318 | ++w; | |
319 | } | |
320 | p_in += bytes_left; | |
321 | p_out += bytes_left; | |
96d8eab5 | 322 | } |
96d8eab5 PO |
323 | } |
324 | ||
325 | return 0; | |
326 | } | |
327 | ||
328 | static void schedule_irq(struct m2mtest_dev *dev, int msec_timeout) | |
329 | { | |
330 | dprintk(dev, "Scheduling a simulated irq\n"); | |
331 | mod_timer(&dev->timer, jiffies + msecs_to_jiffies(msec_timeout)); | |
332 | } | |
333 | ||
334 | /* | |
335 | * mem2mem callbacks | |
336 | */ | |
337 | ||
338 | /** | |
339 | * job_ready() - check whether an instance is ready to be scheduled to run | |
340 | */ | |
341 | static int job_ready(void *priv) | |
342 | { | |
343 | struct m2mtest_ctx *ctx = priv; | |
344 | ||
345 | if (v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) < ctx->translen | |
346 | || v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx) < ctx->translen) { | |
347 | dprintk(ctx->dev, "Not enough buffers available\n"); | |
348 | return 0; | |
349 | } | |
350 | ||
351 | return 1; | |
352 | } | |
353 | ||
354 | static void job_abort(void *priv) | |
355 | { | |
356 | struct m2mtest_ctx *ctx = priv; | |
357 | ||
358 | /* Will cancel the transaction in the next interrupt handler */ | |
359 | ctx->aborting = 1; | |
360 | } | |
361 | ||
d80ee38c MS |
362 | static void m2mtest_lock(void *priv) |
363 | { | |
364 | struct m2mtest_ctx *ctx = priv; | |
365 | struct m2mtest_dev *dev = ctx->dev; | |
366 | mutex_lock(&dev->dev_mutex); | |
367 | } | |
368 | ||
369 | static void m2mtest_unlock(void *priv) | |
370 | { | |
371 | struct m2mtest_ctx *ctx = priv; | |
372 | struct m2mtest_dev *dev = ctx->dev; | |
373 | mutex_unlock(&dev->dev_mutex); | |
374 | } | |
375 | ||
376 | ||
96d8eab5 PO |
377 | /* device_run() - prepares and starts the device |
378 | * | |
379 | * This simulates all the immediate preparations required before starting | |
380 | * a device. This will be called by the framework when it decides to schedule | |
381 | * a particular instance. | |
382 | */ | |
383 | static void device_run(void *priv) | |
384 | { | |
385 | struct m2mtest_ctx *ctx = priv; | |
386 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 387 | struct vb2_buffer *src_buf, *dst_buf; |
96d8eab5 PO |
388 | |
389 | src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); | |
390 | dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); | |
391 | ||
392 | device_process(ctx, src_buf, dst_buf); | |
393 | ||
394 | /* Run a timer, which simulates a hardware irq */ | |
395 | schedule_irq(dev, ctx->transtime); | |
396 | } | |
397 | ||
96d8eab5 PO |
398 | static void device_isr(unsigned long priv) |
399 | { | |
400 | struct m2mtest_dev *m2mtest_dev = (struct m2mtest_dev *)priv; | |
401 | struct m2mtest_ctx *curr_ctx; | |
d80ee38c | 402 | struct vb2_buffer *src_vb, *dst_vb; |
96d8eab5 PO |
403 | unsigned long flags; |
404 | ||
405 | curr_ctx = v4l2_m2m_get_curr_priv(m2mtest_dev->m2m_dev); | |
406 | ||
407 | if (NULL == curr_ctx) { | |
26fdcf09 | 408 | pr_err("Instance released before the end of transaction\n"); |
96d8eab5 PO |
409 | return; |
410 | } | |
411 | ||
d80ee38c MS |
412 | src_vb = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx); |
413 | dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx); | |
414 | ||
96d8eab5 PO |
415 | curr_ctx->num_processed++; |
416 | ||
d80ee38c MS |
417 | spin_lock_irqsave(&m2mtest_dev->irqlock, flags); |
418 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); | |
419 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); | |
420 | spin_unlock_irqrestore(&m2mtest_dev->irqlock, flags); | |
421 | ||
96d8eab5 PO |
422 | if (curr_ctx->num_processed == curr_ctx->translen |
423 | || curr_ctx->aborting) { | |
424 | dprintk(curr_ctx->dev, "Finishing transaction\n"); | |
425 | curr_ctx->num_processed = 0; | |
96d8eab5 PO |
426 | v4l2_m2m_job_finish(m2mtest_dev->m2m_dev, curr_ctx->m2m_ctx); |
427 | } else { | |
96d8eab5 PO |
428 | device_run(curr_ctx); |
429 | } | |
430 | } | |
431 | ||
96d8eab5 PO |
432 | /* |
433 | * video ioctls | |
434 | */ | |
435 | static int vidioc_querycap(struct file *file, void *priv, | |
436 | struct v4l2_capability *cap) | |
437 | { | |
438 | strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1); | |
439 | strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1); | |
72c2af6e HV |
440 | snprintf(cap->bus_info, sizeof(cap->bus_info), |
441 | "platform:%s", MEM2MEM_NAME); | |
00424c7e | 442 | cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; |
b0d14996 | 443 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
96d8eab5 PO |
444 | return 0; |
445 | } | |
446 | ||
447 | static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) | |
448 | { | |
449 | int i, num; | |
450 | struct m2mtest_fmt *fmt; | |
451 | ||
452 | num = 0; | |
453 | ||
454 | for (i = 0; i < NUM_FORMATS; ++i) { | |
455 | if (formats[i].types & type) { | |
456 | /* index-th format of type type found ? */ | |
457 | if (num == f->index) | |
458 | break; | |
459 | /* Correct type but haven't reached our index yet, | |
460 | * just increment per-type index */ | |
461 | ++num; | |
462 | } | |
463 | } | |
464 | ||
465 | if (i < NUM_FORMATS) { | |
466 | /* Format found */ | |
467 | fmt = &formats[i]; | |
468 | strncpy(f->description, fmt->name, sizeof(f->description) - 1); | |
469 | f->pixelformat = fmt->fourcc; | |
470 | return 0; | |
471 | } | |
472 | ||
473 | /* Format not found */ | |
474 | return -EINVAL; | |
475 | } | |
476 | ||
477 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
478 | struct v4l2_fmtdesc *f) | |
479 | { | |
480 | return enum_fmt(f, MEM2MEM_CAPTURE); | |
481 | } | |
482 | ||
483 | static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, | |
484 | struct v4l2_fmtdesc *f) | |
485 | { | |
486 | return enum_fmt(f, MEM2MEM_OUTPUT); | |
487 | } | |
488 | ||
489 | static int vidioc_g_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
490 | { | |
d80ee38c | 491 | struct vb2_queue *vq; |
96d8eab5 PO |
492 | struct m2mtest_q_data *q_data; |
493 | ||
494 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
495 | if (!vq) | |
496 | return -EINVAL; | |
497 | ||
9f4161a6 | 498 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
499 | |
500 | f->fmt.pix.width = q_data->width; | |
501 | f->fmt.pix.height = q_data->height; | |
d80ee38c | 502 | f->fmt.pix.field = V4L2_FIELD_NONE; |
96d8eab5 PO |
503 | f->fmt.pix.pixelformat = q_data->fmt->fourcc; |
504 | f->fmt.pix.bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
505 | f->fmt.pix.sizeimage = q_data->sizeimage; | |
47556ffa | 506 | f->fmt.pix.colorspace = ctx->colorspace; |
96d8eab5 PO |
507 | |
508 | return 0; | |
509 | } | |
510 | ||
511 | static int vidioc_g_fmt_vid_out(struct file *file, void *priv, | |
512 | struct v4l2_format *f) | |
513 | { | |
d3dd59c2 | 514 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
515 | } |
516 | ||
517 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
518 | struct v4l2_format *f) | |
519 | { | |
d3dd59c2 | 520 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
521 | } |
522 | ||
523 | static int vidioc_try_fmt(struct v4l2_format *f, struct m2mtest_fmt *fmt) | |
524 | { | |
525 | enum v4l2_field field; | |
526 | ||
527 | field = f->fmt.pix.field; | |
528 | ||
529 | if (field == V4L2_FIELD_ANY) | |
530 | field = V4L2_FIELD_NONE; | |
531 | else if (V4L2_FIELD_NONE != field) | |
532 | return -EINVAL; | |
533 | ||
534 | /* V4L2 specification suggests the driver corrects the format struct | |
535 | * if any of the dimensions is unsupported */ | |
536 | f->fmt.pix.field = field; | |
537 | ||
538 | if (f->fmt.pix.height < MIN_H) | |
539 | f->fmt.pix.height = MIN_H; | |
540 | else if (f->fmt.pix.height > MAX_H) | |
541 | f->fmt.pix.height = MAX_H; | |
542 | ||
543 | if (f->fmt.pix.width < MIN_W) | |
544 | f->fmt.pix.width = MIN_W; | |
545 | else if (f->fmt.pix.width > MAX_W) | |
546 | f->fmt.pix.width = MAX_W; | |
547 | ||
548 | f->fmt.pix.width &= ~DIM_ALIGN_MASK; | |
549 | f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; | |
550 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
551 | ||
552 | return 0; | |
553 | } | |
554 | ||
555 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
556 | struct v4l2_format *f) | |
557 | { | |
558 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 559 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
560 | |
561 | fmt = find_format(f); | |
562 | if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) { | |
563 | v4l2_err(&ctx->dev->v4l2_dev, | |
564 | "Fourcc format (0x%08x) invalid.\n", | |
565 | f->fmt.pix.pixelformat); | |
566 | return -EINVAL; | |
567 | } | |
47556ffa | 568 | f->fmt.pix.colorspace = ctx->colorspace; |
96d8eab5 PO |
569 | |
570 | return vidioc_try_fmt(f, fmt); | |
571 | } | |
572 | ||
573 | static int vidioc_try_fmt_vid_out(struct file *file, void *priv, | |
574 | struct v4l2_format *f) | |
575 | { | |
576 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 577 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
578 | |
579 | fmt = find_format(f); | |
580 | if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) { | |
581 | v4l2_err(&ctx->dev->v4l2_dev, | |
582 | "Fourcc format (0x%08x) invalid.\n", | |
583 | f->fmt.pix.pixelformat); | |
584 | return -EINVAL; | |
585 | } | |
47556ffa HV |
586 | if (!f->fmt.pix.colorspace) |
587 | f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; | |
96d8eab5 PO |
588 | |
589 | return vidioc_try_fmt(f, fmt); | |
590 | } | |
591 | ||
592 | static int vidioc_s_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
593 | { | |
594 | struct m2mtest_q_data *q_data; | |
d80ee38c | 595 | struct vb2_queue *vq; |
96d8eab5 PO |
596 | |
597 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
598 | if (!vq) | |
599 | return -EINVAL; | |
600 | ||
9f4161a6 | 601 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
602 | if (!q_data) |
603 | return -EINVAL; | |
604 | ||
d80ee38c | 605 | if (vb2_is_busy(vq)) { |
96d8eab5 | 606 | v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); |
07e80305 | 607 | return -EBUSY; |
96d8eab5 PO |
608 | } |
609 | ||
610 | q_data->fmt = find_format(f); | |
611 | q_data->width = f->fmt.pix.width; | |
612 | q_data->height = f->fmt.pix.height; | |
613 | q_data->sizeimage = q_data->width * q_data->height | |
614 | * q_data->fmt->depth >> 3; | |
96d8eab5 PO |
615 | |
616 | dprintk(ctx->dev, | |
617 | "Setting format for type %d, wxh: %dx%d, fmt: %d\n", | |
618 | f->type, q_data->width, q_data->height, q_data->fmt->fourcc); | |
619 | ||
07e80305 | 620 | return 0; |
96d8eab5 PO |
621 | } |
622 | ||
623 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
624 | struct v4l2_format *f) | |
625 | { | |
626 | int ret; | |
627 | ||
628 | ret = vidioc_try_fmt_vid_cap(file, priv, f); | |
629 | if (ret) | |
630 | return ret; | |
631 | ||
d3dd59c2 | 632 | return vidioc_s_fmt(file2ctx(file), f); |
96d8eab5 PO |
633 | } |
634 | ||
635 | static int vidioc_s_fmt_vid_out(struct file *file, void *priv, | |
636 | struct v4l2_format *f) | |
637 | { | |
47556ffa | 638 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
639 | int ret; |
640 | ||
641 | ret = vidioc_try_fmt_vid_out(file, priv, f); | |
642 | if (ret) | |
643 | return ret; | |
644 | ||
47556ffa HV |
645 | ret = vidioc_s_fmt(file2ctx(file), f); |
646 | if (!ret) | |
647 | ctx->colorspace = f->fmt.pix.colorspace; | |
648 | return ret; | |
96d8eab5 PO |
649 | } |
650 | ||
651 | static int vidioc_reqbufs(struct file *file, void *priv, | |
652 | struct v4l2_requestbuffers *reqbufs) | |
653 | { | |
d3dd59c2 | 654 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
655 | |
656 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); | |
657 | } | |
658 | ||
659 | static int vidioc_querybuf(struct file *file, void *priv, | |
660 | struct v4l2_buffer *buf) | |
661 | { | |
d3dd59c2 | 662 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
663 | |
664 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); | |
665 | } | |
666 | ||
667 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
668 | { | |
d3dd59c2 | 669 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
670 | |
671 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); | |
672 | } | |
673 | ||
674 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
675 | { | |
d3dd59c2 | 676 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
677 | |
678 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); | |
679 | } | |
680 | ||
681 | static int vidioc_streamon(struct file *file, void *priv, | |
682 | enum v4l2_buf_type type) | |
683 | { | |
d3dd59c2 | 684 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
685 | |
686 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); | |
687 | } | |
688 | ||
689 | static int vidioc_streamoff(struct file *file, void *priv, | |
690 | enum v4l2_buf_type type) | |
691 | { | |
d3dd59c2 | 692 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
693 | |
694 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); | |
695 | } | |
696 | ||
d3dd59c2 | 697 | static int m2mtest_s_ctrl(struct v4l2_ctrl *ctrl) |
96d8eab5 | 698 | { |
d3dd59c2 HV |
699 | struct m2mtest_ctx *ctx = |
700 | container_of(ctrl->handler, struct m2mtest_ctx, hdl); | |
96d8eab5 PO |
701 | |
702 | switch (ctrl->id) { | |
80072871 | 703 | case V4L2_CID_HFLIP: |
d3dd59c2 | 704 | if (ctrl->val) |
80072871 TM |
705 | ctx->mode |= MEM2MEM_HFLIP; |
706 | else | |
707 | ctx->mode &= ~MEM2MEM_HFLIP; | |
708 | break; | |
709 | ||
710 | case V4L2_CID_VFLIP: | |
d3dd59c2 | 711 | if (ctrl->val) |
80072871 TM |
712 | ctx->mode |= MEM2MEM_VFLIP; |
713 | else | |
714 | ctx->mode &= ~MEM2MEM_VFLIP; | |
715 | break; | |
716 | ||
96d8eab5 | 717 | case V4L2_CID_TRANS_TIME_MSEC: |
d3dd59c2 | 718 | ctx->transtime = ctrl->val; |
96d8eab5 PO |
719 | break; |
720 | ||
721 | case V4L2_CID_TRANS_NUM_BUFS: | |
d3dd59c2 | 722 | ctx->translen = ctrl->val; |
96d8eab5 PO |
723 | break; |
724 | ||
725 | default: | |
726 | v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n"); | |
727 | return -EINVAL; | |
728 | } | |
729 | ||
730 | return 0; | |
731 | } | |
732 | ||
d3dd59c2 HV |
733 | static const struct v4l2_ctrl_ops m2mtest_ctrl_ops = { |
734 | .s_ctrl = m2mtest_s_ctrl, | |
735 | }; | |
736 | ||
96d8eab5 PO |
737 | |
738 | static const struct v4l2_ioctl_ops m2mtest_ioctl_ops = { | |
739 | .vidioc_querycap = vidioc_querycap, | |
740 | ||
741 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
742 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
743 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
744 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
745 | ||
746 | .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, | |
747 | .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, | |
748 | .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, | |
749 | .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, | |
750 | ||
751 | .vidioc_reqbufs = vidioc_reqbufs, | |
752 | .vidioc_querybuf = vidioc_querybuf, | |
753 | ||
754 | .vidioc_qbuf = vidioc_qbuf, | |
755 | .vidioc_dqbuf = vidioc_dqbuf, | |
756 | ||
757 | .vidioc_streamon = vidioc_streamon, | |
758 | .vidioc_streamoff = vidioc_streamoff, | |
97a3c902 HV |
759 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
760 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
96d8eab5 PO |
761 | }; |
762 | ||
763 | ||
764 | /* | |
765 | * Queue operations | |
766 | */ | |
767 | ||
fc714e70 GL |
768 | static int m2mtest_queue_setup(struct vb2_queue *vq, |
769 | const struct v4l2_format *fmt, | |
770 | unsigned int *nbuffers, unsigned int *nplanes, | |
771 | unsigned int sizes[], void *alloc_ctxs[]) | |
96d8eab5 | 772 | { |
d80ee38c | 773 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vq); |
96d8eab5 | 774 | struct m2mtest_q_data *q_data; |
d80ee38c | 775 | unsigned int size, count = *nbuffers; |
96d8eab5 | 776 | |
9f4161a6 | 777 | q_data = get_q_data(ctx, vq->type); |
96d8eab5 | 778 | |
d80ee38c MS |
779 | size = q_data->width * q_data->height * q_data->fmt->depth >> 3; |
780 | ||
781 | while (size * count > MEM2MEM_VID_MEM_LIMIT) | |
782 | (count)--; | |
96d8eab5 | 783 | |
d80ee38c MS |
784 | *nplanes = 1; |
785 | *nbuffers = count; | |
786 | sizes[0] = size; | |
96d8eab5 | 787 | |
d80ee38c MS |
788 | /* |
789 | * videobuf2-vmalloc allocator is context-less so no need to set | |
790 | * alloc_ctxs array. | |
791 | */ | |
96d8eab5 | 792 | |
d80ee38c | 793 | dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); |
96d8eab5 PO |
794 | |
795 | return 0; | |
796 | } | |
797 | ||
d80ee38c | 798 | static int m2mtest_buf_prepare(struct vb2_buffer *vb) |
96d8eab5 | 799 | { |
d80ee38c | 800 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
96d8eab5 | 801 | struct m2mtest_q_data *q_data; |
96d8eab5 | 802 | |
d80ee38c | 803 | dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); |
96d8eab5 | 804 | |
9f4161a6 | 805 | q_data = get_q_data(ctx, vb->vb2_queue->type); |
96d8eab5 | 806 | |
d80ee38c MS |
807 | if (vb2_plane_size(vb, 0) < q_data->sizeimage) { |
808 | dprintk(ctx->dev, "%s data will not fit into plane (%lu < %lu)\n", | |
809 | __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); | |
96d8eab5 PO |
810 | return -EINVAL; |
811 | } | |
812 | ||
d80ee38c | 813 | vb2_set_plane_payload(vb, 0, q_data->sizeimage); |
96d8eab5 PO |
814 | |
815 | return 0; | |
96d8eab5 PO |
816 | } |
817 | ||
d80ee38c | 818 | static void m2mtest_buf_queue(struct vb2_buffer *vb) |
96d8eab5 | 819 | { |
d80ee38c MS |
820 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
821 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); | |
96d8eab5 PO |
822 | } |
823 | ||
0f910bf0 MO |
824 | static void m2mtest_wait_prepare(struct vb2_queue *q) |
825 | { | |
826 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
827 | m2mtest_unlock(ctx); | |
828 | } | |
829 | ||
830 | static void m2mtest_wait_finish(struct vb2_queue *q) | |
831 | { | |
832 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
833 | m2mtest_lock(ctx); | |
834 | } | |
835 | ||
d80ee38c MS |
836 | static struct vb2_ops m2mtest_qops = { |
837 | .queue_setup = m2mtest_queue_setup, | |
838 | .buf_prepare = m2mtest_buf_prepare, | |
839 | .buf_queue = m2mtest_buf_queue, | |
0f910bf0 MO |
840 | .wait_prepare = m2mtest_wait_prepare, |
841 | .wait_finish = m2mtest_wait_finish, | |
96d8eab5 PO |
842 | }; |
843 | ||
d80ee38c | 844 | static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) |
96d8eab5 PO |
845 | { |
846 | struct m2mtest_ctx *ctx = priv; | |
d80ee38c | 847 | int ret; |
96d8eab5 | 848 | |
d80ee38c | 849 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
b0a55033 | 850 | src_vq->io_modes = VB2_MMAP | VB2_DMABUF; |
d80ee38c MS |
851 | src_vq->drv_priv = ctx; |
852 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
853 | src_vq->ops = &m2mtest_qops; | |
854 | src_vq->mem_ops = &vb2_vmalloc_memops; | |
d95d7c64 | 855 | src_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
d80ee38c MS |
856 | |
857 | ret = vb2_queue_init(src_vq); | |
858 | if (ret) | |
859 | return ret; | |
96d8eab5 | 860 | |
d80ee38c | 861 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
b0a55033 | 862 | dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; |
d80ee38c MS |
863 | dst_vq->drv_priv = ctx; |
864 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
865 | dst_vq->ops = &m2mtest_qops; | |
866 | dst_vq->mem_ops = &vb2_vmalloc_memops; | |
d95d7c64 | 867 | dst_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
d80ee38c MS |
868 | |
869 | return vb2_queue_init(dst_vq); | |
870 | } | |
96d8eab5 | 871 | |
d3dd59c2 HV |
872 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_time_msec = { |
873 | .ops = &m2mtest_ctrl_ops, | |
874 | .id = V4L2_CID_TRANS_TIME_MSEC, | |
875 | .name = "Transaction Time (msec)", | |
876 | .type = V4L2_CTRL_TYPE_INTEGER, | |
877 | .def = 1001, | |
878 | .min = 1, | |
879 | .max = 10001, | |
880 | .step = 100, | |
881 | }; | |
882 | ||
883 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_num_bufs = { | |
884 | .ops = &m2mtest_ctrl_ops, | |
885 | .id = V4L2_CID_TRANS_NUM_BUFS, | |
886 | .name = "Buffers Per Transaction", | |
887 | .type = V4L2_CTRL_TYPE_INTEGER, | |
888 | .def = 1, | |
889 | .min = 1, | |
890 | .max = MEM2MEM_DEF_NUM_BUFS, | |
891 | .step = 1, | |
892 | }; | |
893 | ||
96d8eab5 PO |
894 | /* |
895 | * File operations | |
896 | */ | |
897 | static int m2mtest_open(struct file *file) | |
898 | { | |
899 | struct m2mtest_dev *dev = video_drvdata(file); | |
900 | struct m2mtest_ctx *ctx = NULL; | |
d3dd59c2 | 901 | struct v4l2_ctrl_handler *hdl; |
f4694039 | 902 | int rc = 0; |
96d8eab5 | 903 | |
f4694039 HV |
904 | if (mutex_lock_interruptible(&dev->dev_mutex)) |
905 | return -ERESTARTSYS; | |
56ed221f | 906 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
f4694039 HV |
907 | if (!ctx) { |
908 | rc = -ENOMEM; | |
909 | goto open_unlock; | |
910 | } | |
96d8eab5 | 911 | |
d3dd59c2 HV |
912 | v4l2_fh_init(&ctx->fh, video_devdata(file)); |
913 | file->private_data = &ctx->fh; | |
96d8eab5 | 914 | ctx->dev = dev; |
d3dd59c2 HV |
915 | hdl = &ctx->hdl; |
916 | v4l2_ctrl_handler_init(hdl, 4); | |
917 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); | |
918 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); | |
919 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_time_msec, NULL); | |
920 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_num_bufs, NULL); | |
921 | if (hdl->error) { | |
a7bd7756 | 922 | rc = hdl->error; |
d3dd59c2 | 923 | v4l2_ctrl_handler_free(hdl); |
a7bd7756 | 924 | goto open_unlock; |
d3dd59c2 HV |
925 | } |
926 | ctx->fh.ctrl_handler = hdl; | |
927 | v4l2_ctrl_handler_setup(hdl); | |
96d8eab5 | 928 | |
9f4161a6 | 929 | ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0]; |
47556ffa HV |
930 | ctx->q_data[V4L2_M2M_SRC].width = 640; |
931 | ctx->q_data[V4L2_M2M_SRC].height = 480; | |
932 | ctx->q_data[V4L2_M2M_SRC].sizeimage = | |
933 | ctx->q_data[V4L2_M2M_SRC].width * | |
934 | ctx->q_data[V4L2_M2M_SRC].height * | |
935 | (ctx->q_data[V4L2_M2M_SRC].fmt->depth >> 3); | |
936 | ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC]; | |
937 | ctx->colorspace = V4L2_COLORSPACE_REC709; | |
9f4161a6 | 938 | |
d80ee38c MS |
939 | ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); |
940 | ||
96d8eab5 | 941 | if (IS_ERR(ctx->m2m_ctx)) { |
f4694039 | 942 | rc = PTR_ERR(ctx->m2m_ctx); |
16ee9bb1 | 943 | |
d3dd59c2 | 944 | v4l2_ctrl_handler_free(hdl); |
96d8eab5 | 945 | kfree(ctx); |
f4694039 | 946 | goto open_unlock; |
96d8eab5 PO |
947 | } |
948 | ||
d3dd59c2 | 949 | v4l2_fh_add(&ctx->fh); |
96d8eab5 PO |
950 | atomic_inc(&dev->num_inst); |
951 | ||
952 | dprintk(dev, "Created instance %p, m2m_ctx: %p\n", ctx, ctx->m2m_ctx); | |
953 | ||
f4694039 HV |
954 | open_unlock: |
955 | mutex_unlock(&dev->dev_mutex); | |
a7bd7756 | 956 | return rc; |
96d8eab5 PO |
957 | } |
958 | ||
959 | static int m2mtest_release(struct file *file) | |
960 | { | |
961 | struct m2mtest_dev *dev = video_drvdata(file); | |
d3dd59c2 | 962 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
963 | |
964 | dprintk(dev, "Releasing instance %p\n", ctx); | |
965 | ||
d3dd59c2 HV |
966 | v4l2_fh_del(&ctx->fh); |
967 | v4l2_fh_exit(&ctx->fh); | |
968 | v4l2_ctrl_handler_free(&ctx->hdl); | |
f4694039 | 969 | mutex_lock(&dev->dev_mutex); |
96d8eab5 | 970 | v4l2_m2m_ctx_release(ctx->m2m_ctx); |
f4694039 | 971 | mutex_unlock(&dev->dev_mutex); |
96d8eab5 PO |
972 | kfree(ctx); |
973 | ||
974 | atomic_dec(&dev->num_inst); | |
975 | ||
976 | return 0; | |
977 | } | |
978 | ||
979 | static unsigned int m2mtest_poll(struct file *file, | |
980 | struct poll_table_struct *wait) | |
981 | { | |
d3dd59c2 | 982 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
983 | |
984 | return v4l2_m2m_poll(file, ctx->m2m_ctx, wait); | |
985 | } | |
986 | ||
987 | static int m2mtest_mmap(struct file *file, struct vm_area_struct *vma) | |
988 | { | |
f4694039 | 989 | struct m2mtest_dev *dev = video_drvdata(file); |
d3dd59c2 | 990 | struct m2mtest_ctx *ctx = file2ctx(file); |
f4694039 | 991 | int res; |
96d8eab5 | 992 | |
f4694039 HV |
993 | if (mutex_lock_interruptible(&dev->dev_mutex)) |
994 | return -ERESTARTSYS; | |
995 | res = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); | |
996 | mutex_unlock(&dev->dev_mutex); | |
997 | return res; | |
96d8eab5 PO |
998 | } |
999 | ||
1000 | static const struct v4l2_file_operations m2mtest_fops = { | |
1001 | .owner = THIS_MODULE, | |
1002 | .open = m2mtest_open, | |
1003 | .release = m2mtest_release, | |
1004 | .poll = m2mtest_poll, | |
07e80305 | 1005 | .unlocked_ioctl = video_ioctl2, |
96d8eab5 PO |
1006 | .mmap = m2mtest_mmap, |
1007 | }; | |
1008 | ||
1009 | static struct video_device m2mtest_videodev = { | |
1010 | .name = MEM2MEM_NAME, | |
954f340f | 1011 | .vfl_dir = VFL_DIR_M2M, |
96d8eab5 PO |
1012 | .fops = &m2mtest_fops, |
1013 | .ioctl_ops = &m2mtest_ioctl_ops, | |
1014 | .minor = -1, | |
1015 | .release = video_device_release, | |
1016 | }; | |
1017 | ||
1018 | static struct v4l2_m2m_ops m2m_ops = { | |
1019 | .device_run = device_run, | |
1020 | .job_ready = job_ready, | |
1021 | .job_abort = job_abort, | |
d80ee38c MS |
1022 | .lock = m2mtest_lock, |
1023 | .unlock = m2mtest_unlock, | |
96d8eab5 PO |
1024 | }; |
1025 | ||
1026 | static int m2mtest_probe(struct platform_device *pdev) | |
1027 | { | |
1028 | struct m2mtest_dev *dev; | |
1029 | struct video_device *vfd; | |
1030 | int ret; | |
1031 | ||
38a7996c | 1032 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); |
96d8eab5 PO |
1033 | if (!dev) |
1034 | return -ENOMEM; | |
1035 | ||
1036 | spin_lock_init(&dev->irqlock); | |
1037 | ||
1038 | ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); | |
1039 | if (ret) | |
38a7996c | 1040 | return ret; |
96d8eab5 PO |
1041 | |
1042 | atomic_set(&dev->num_inst, 0); | |
1043 | mutex_init(&dev->dev_mutex); | |
1044 | ||
1045 | vfd = video_device_alloc(); | |
1046 | if (!vfd) { | |
1047 | v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); | |
1048 | ret = -ENOMEM; | |
1049 | goto unreg_dev; | |
1050 | } | |
1051 | ||
1052 | *vfd = m2mtest_videodev; | |
07e80305 | 1053 | vfd->lock = &dev->dev_mutex; |
96d8eab5 PO |
1054 | |
1055 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); | |
1056 | if (ret) { | |
1057 | v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); | |
1058 | goto rel_vdev; | |
1059 | } | |
1060 | ||
1061 | video_set_drvdata(vfd, dev); | |
1062 | snprintf(vfd->name, sizeof(vfd->name), "%s", m2mtest_videodev.name); | |
1063 | dev->vfd = vfd; | |
1064 | v4l2_info(&dev->v4l2_dev, MEM2MEM_TEST_MODULE_NAME | |
1065 | "Device registered as /dev/video%d\n", vfd->num); | |
1066 | ||
1067 | setup_timer(&dev->timer, device_isr, (long)dev); | |
1068 | platform_set_drvdata(pdev, dev); | |
1069 | ||
1070 | dev->m2m_dev = v4l2_m2m_init(&m2m_ops); | |
1071 | if (IS_ERR(dev->m2m_dev)) { | |
1072 | v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); | |
1073 | ret = PTR_ERR(dev->m2m_dev); | |
1074 | goto err_m2m; | |
1075 | } | |
1076 | ||
1077 | return 0; | |
1078 | ||
1079 | err_m2m: | |
b7e13ef7 | 1080 | v4l2_m2m_release(dev->m2m_dev); |
96d8eab5 PO |
1081 | video_unregister_device(dev->vfd); |
1082 | rel_vdev: | |
1083 | video_device_release(vfd); | |
1084 | unreg_dev: | |
1085 | v4l2_device_unregister(&dev->v4l2_dev); | |
96d8eab5 PO |
1086 | |
1087 | return ret; | |
1088 | } | |
1089 | ||
1090 | static int m2mtest_remove(struct platform_device *pdev) | |
1091 | { | |
1092 | struct m2mtest_dev *dev = | |
1093 | (struct m2mtest_dev *)platform_get_drvdata(pdev); | |
1094 | ||
1095 | v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_TEST_MODULE_NAME); | |
1096 | v4l2_m2m_release(dev->m2m_dev); | |
1097 | del_timer_sync(&dev->timer); | |
1098 | video_unregister_device(dev->vfd); | |
1099 | v4l2_device_unregister(&dev->v4l2_dev); | |
96d8eab5 PO |
1100 | |
1101 | return 0; | |
1102 | } | |
1103 | ||
1104 | static struct platform_driver m2mtest_pdrv = { | |
1105 | .probe = m2mtest_probe, | |
1106 | .remove = m2mtest_remove, | |
1107 | .driver = { | |
1108 | .name = MEM2MEM_NAME, | |
1109 | .owner = THIS_MODULE, | |
1110 | }, | |
1111 | }; | |
1112 | ||
1113 | static void __exit m2mtest_exit(void) | |
1114 | { | |
1115 | platform_driver_unregister(&m2mtest_pdrv); | |
1116 | platform_device_unregister(&m2mtest_pdev); | |
1117 | } | |
1118 | ||
1119 | static int __init m2mtest_init(void) | |
1120 | { | |
1121 | int ret; | |
1122 | ||
1123 | ret = platform_device_register(&m2mtest_pdev); | |
1124 | if (ret) | |
1125 | return ret; | |
1126 | ||
1127 | ret = platform_driver_register(&m2mtest_pdrv); | |
1128 | if (ret) | |
1129 | platform_device_unregister(&m2mtest_pdev); | |
1130 | ||
1131 | return 0; | |
1132 | } | |
1133 | ||
1134 | module_init(m2mtest_init); | |
1135 | module_exit(m2mtest_exit); | |
1136 |