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 */ | |
43405831 | 63 | #define MEM2MEM_DEF_TRANSTIME 40 |
96d8eab5 PO |
64 | #define MEM2MEM_COLOR_STEP (0xff >> 4) |
65 | #define MEM2MEM_NUM_TILES 8 | |
66 | ||
80072871 TM |
67 | /* Flags that indicate processing mode */ |
68 | #define MEM2MEM_HFLIP (1 << 0) | |
69 | #define MEM2MEM_VFLIP (1 << 1) | |
70 | ||
96d8eab5 | 71 | #define dprintk(dev, fmt, arg...) \ |
d95d7c64 | 72 | v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) |
96d8eab5 PO |
73 | |
74 | ||
32872831 | 75 | static void m2mtest_dev_release(struct device *dev) |
96d8eab5 PO |
76 | {} |
77 | ||
78 | static struct platform_device m2mtest_pdev = { | |
79 | .name = MEM2MEM_NAME, | |
80 | .dev.release = m2mtest_dev_release, | |
81 | }; | |
82 | ||
83 | struct m2mtest_fmt { | |
84 | char *name; | |
85 | u32 fourcc; | |
86 | int depth; | |
87 | /* Types the format can be used for */ | |
88 | u32 types; | |
89 | }; | |
90 | ||
91 | static struct m2mtest_fmt formats[] = { | |
92 | { | |
93 | .name = "RGB565 (BE)", | |
94 | .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ | |
95 | .depth = 16, | |
96 | /* Both capture and output format */ | |
97 | .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, | |
98 | }, | |
99 | { | |
100 | .name = "4:2:2, packed, YUYV", | |
101 | .fourcc = V4L2_PIX_FMT_YUYV, | |
102 | .depth = 16, | |
103 | /* Output-only format */ | |
104 | .types = MEM2MEM_OUTPUT, | |
105 | }, | |
106 | }; | |
107 | ||
d3dd59c2 HV |
108 | #define NUM_FORMATS ARRAY_SIZE(formats) |
109 | ||
96d8eab5 PO |
110 | /* Per-queue, driver-specific private data */ |
111 | struct m2mtest_q_data { | |
112 | unsigned int width; | |
113 | unsigned int height; | |
114 | unsigned int sizeimage; | |
ca5f5fdb | 115 | unsigned int sequence; |
96d8eab5 PO |
116 | struct m2mtest_fmt *fmt; |
117 | }; | |
118 | ||
119 | enum { | |
120 | V4L2_M2M_SRC = 0, | |
121 | V4L2_M2M_DST = 1, | |
122 | }; | |
123 | ||
d3dd59c2 HV |
124 | #define V4L2_CID_TRANS_TIME_MSEC (V4L2_CID_USER_BASE + 0x1000) |
125 | #define V4L2_CID_TRANS_NUM_BUFS (V4L2_CID_USER_BASE + 0x1001) | |
96d8eab5 PO |
126 | |
127 | static struct m2mtest_fmt *find_format(struct v4l2_format *f) | |
128 | { | |
129 | struct m2mtest_fmt *fmt; | |
130 | unsigned int k; | |
131 | ||
132 | for (k = 0; k < NUM_FORMATS; k++) { | |
133 | fmt = &formats[k]; | |
134 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
135 | break; | |
136 | } | |
137 | ||
138 | if (k == NUM_FORMATS) | |
139 | return NULL; | |
140 | ||
141 | return &formats[k]; | |
142 | } | |
143 | ||
144 | struct m2mtest_dev { | |
145 | struct v4l2_device v4l2_dev; | |
146 | struct video_device *vfd; | |
147 | ||
148 | atomic_t num_inst; | |
149 | struct mutex dev_mutex; | |
150 | spinlock_t irqlock; | |
151 | ||
152 | struct timer_list timer; | |
153 | ||
154 | struct v4l2_m2m_dev *m2m_dev; | |
155 | }; | |
156 | ||
157 | struct m2mtest_ctx { | |
d3dd59c2 | 158 | struct v4l2_fh fh; |
96d8eab5 PO |
159 | struct m2mtest_dev *dev; |
160 | ||
d3dd59c2 HV |
161 | struct v4l2_ctrl_handler hdl; |
162 | ||
96d8eab5 PO |
163 | /* Processed buffers in this transaction */ |
164 | u8 num_processed; | |
165 | ||
166 | /* Transaction length (i.e. how many buffers per transaction) */ | |
167 | u32 translen; | |
168 | /* Transaction time (i.e. simulated processing time) in milliseconds */ | |
169 | u32 transtime; | |
170 | ||
171 | /* Abort requested by m2m */ | |
172 | int aborting; | |
173 | ||
80072871 TM |
174 | /* Processing mode */ |
175 | int mode; | |
176 | ||
47556ffa HV |
177 | enum v4l2_colorspace colorspace; |
178 | ||
9f4161a6 TM |
179 | /* Source and destination queue data */ |
180 | struct m2mtest_q_data q_data[2]; | |
96d8eab5 PO |
181 | }; |
182 | ||
d3dd59c2 HV |
183 | static inline struct m2mtest_ctx *file2ctx(struct file *file) |
184 | { | |
185 | return container_of(file->private_data, struct m2mtest_ctx, fh); | |
186 | } | |
187 | ||
9f4161a6 TM |
188 | static struct m2mtest_q_data *get_q_data(struct m2mtest_ctx *ctx, |
189 | enum v4l2_buf_type type) | |
190 | { | |
191 | switch (type) { | |
192 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
193 | return &ctx->q_data[V4L2_M2M_SRC]; | |
194 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
195 | return &ctx->q_data[V4L2_M2M_DST]; | |
196 | default: | |
197 | BUG(); | |
198 | } | |
199 | return NULL; | |
200 | } | |
201 | ||
202 | ||
96d8eab5 | 203 | static int device_process(struct m2mtest_ctx *ctx, |
d80ee38c MS |
204 | struct vb2_buffer *in_vb, |
205 | struct vb2_buffer *out_vb) | |
96d8eab5 PO |
206 | { |
207 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 208 | struct m2mtest_q_data *q_data; |
96d8eab5 PO |
209 | u8 *p_in, *p_out; |
210 | int x, y, t, w; | |
211 | int tile_w, bytes_left; | |
d80ee38c | 212 | int width, height, bytesperline; |
96d8eab5 | 213 | |
9f4161a6 | 214 | q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); |
d80ee38c MS |
215 | |
216 | width = q_data->width; | |
217 | height = q_data->height; | |
218 | bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
219 | ||
220 | p_in = vb2_plane_vaddr(in_vb, 0); | |
221 | p_out = vb2_plane_vaddr(out_vb, 0); | |
96d8eab5 PO |
222 | if (!p_in || !p_out) { |
223 | v4l2_err(&dev->v4l2_dev, | |
224 | "Acquiring kernel pointers to buffers failed\n"); | |
225 | return -EFAULT; | |
226 | } | |
227 | ||
d80ee38c | 228 | if (vb2_plane_size(in_vb, 0) > vb2_plane_size(out_vb, 0)) { |
96d8eab5 PO |
229 | v4l2_err(&dev->v4l2_dev, "Output buffer is too small\n"); |
230 | return -EINVAL; | |
231 | } | |
232 | ||
d80ee38c | 233 | tile_w = (width * (q_data[V4L2_M2M_DST].fmt->depth >> 3)) |
96d8eab5 | 234 | / MEM2MEM_NUM_TILES; |
d80ee38c | 235 | bytes_left = bytesperline - tile_w * MEM2MEM_NUM_TILES; |
96d8eab5 PO |
236 | w = 0; |
237 | ||
ca5f5fdb HV |
238 | out_vb->v4l2_buf.sequence = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE)->sequence++; |
239 | in_vb->v4l2_buf.sequence = q_data->sequence++; | |
d95d7c64 HV |
240 | memcpy(&out_vb->v4l2_buf.timestamp, |
241 | &in_vb->v4l2_buf.timestamp, | |
242 | sizeof(struct timeval)); | |
ca5f5fdb HV |
243 | if (in_vb->v4l2_buf.flags & V4L2_BUF_FLAG_TIMECODE) |
244 | memcpy(&out_vb->v4l2_buf.timecode, &in_vb->v4l2_buf.timecode, | |
245 | sizeof(struct v4l2_timecode)); | |
246 | out_vb->v4l2_buf.field = in_vb->v4l2_buf.field; | |
247 | out_vb->v4l2_buf.flags = in_vb->v4l2_buf.flags & | |
248 | (V4L2_BUF_FLAG_TIMECODE | | |
249 | V4L2_BUF_FLAG_KEYFRAME | | |
250 | V4L2_BUF_FLAG_PFRAME | | |
251 | V4L2_BUF_FLAG_BFRAME | | |
252 | V4L2_BUF_FLAG_TSTAMP_SRC_MASK); | |
d95d7c64 | 253 | |
80072871 TM |
254 | switch (ctx->mode) { |
255 | case MEM2MEM_HFLIP | MEM2MEM_VFLIP: | |
256 | p_out += bytesperline * height - bytes_left; | |
257 | for (y = 0; y < height; ++y) { | |
258 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
259 | if (w & 0x1) { | |
260 | for (x = 0; x < tile_w; ++x) | |
261 | *--p_out = *p_in++ + | |
262 | MEM2MEM_COLOR_STEP; | |
263 | } else { | |
264 | for (x = 0; x < tile_w; ++x) | |
265 | *--p_out = *p_in++ - | |
266 | MEM2MEM_COLOR_STEP; | |
267 | } | |
268 | ++w; | |
96d8eab5 | 269 | } |
80072871 TM |
270 | p_in += bytes_left; |
271 | p_out -= bytes_left; | |
272 | } | |
273 | break; | |
274 | ||
275 | case MEM2MEM_HFLIP: | |
276 | for (y = 0; y < height; ++y) { | |
277 | p_out += MEM2MEM_NUM_TILES * tile_w; | |
278 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
279 | if (w & 0x01) { | |
280 | for (x = 0; x < tile_w; ++x) | |
281 | *--p_out = *p_in++ + | |
282 | MEM2MEM_COLOR_STEP; | |
283 | } else { | |
284 | for (x = 0; x < tile_w; ++x) | |
285 | *--p_out = *p_in++ - | |
286 | MEM2MEM_COLOR_STEP; | |
287 | } | |
288 | ++w; | |
289 | } | |
290 | p_in += bytes_left; | |
291 | p_out += bytesperline; | |
292 | } | |
293 | break; | |
294 | ||
295 | case MEM2MEM_VFLIP: | |
296 | p_out += bytesperline * (height - 1); | |
297 | for (y = 0; y < height; ++y) { | |
298 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
299 | if (w & 0x1) { | |
300 | for (x = 0; x < tile_w; ++x) | |
301 | *p_out++ = *p_in++ + | |
302 | MEM2MEM_COLOR_STEP; | |
303 | } else { | |
304 | for (x = 0; x < tile_w; ++x) | |
305 | *p_out++ = *p_in++ - | |
306 | MEM2MEM_COLOR_STEP; | |
307 | } | |
308 | ++w; | |
309 | } | |
310 | p_in += bytes_left; | |
311 | p_out += bytes_left - 2 * bytesperline; | |
312 | } | |
313 | break; | |
314 | ||
315 | default: | |
316 | for (y = 0; y < height; ++y) { | |
317 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
318 | if (w & 0x1) { | |
319 | for (x = 0; x < tile_w; ++x) | |
320 | *p_out++ = *p_in++ + | |
321 | MEM2MEM_COLOR_STEP; | |
322 | } else { | |
323 | for (x = 0; x < tile_w; ++x) | |
324 | *p_out++ = *p_in++ - | |
325 | MEM2MEM_COLOR_STEP; | |
326 | } | |
327 | ++w; | |
328 | } | |
329 | p_in += bytes_left; | |
330 | p_out += bytes_left; | |
96d8eab5 | 331 | } |
96d8eab5 PO |
332 | } |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | static void schedule_irq(struct m2mtest_dev *dev, int msec_timeout) | |
338 | { | |
339 | dprintk(dev, "Scheduling a simulated irq\n"); | |
340 | mod_timer(&dev->timer, jiffies + msecs_to_jiffies(msec_timeout)); | |
341 | } | |
342 | ||
343 | /* | |
344 | * mem2mem callbacks | |
345 | */ | |
346 | ||
347 | /** | |
348 | * job_ready() - check whether an instance is ready to be scheduled to run | |
349 | */ | |
350 | static int job_ready(void *priv) | |
351 | { | |
352 | struct m2mtest_ctx *ctx = priv; | |
353 | ||
20702ebc SN |
354 | if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) < ctx->translen |
355 | || v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx) < ctx->translen) { | |
96d8eab5 PO |
356 | dprintk(ctx->dev, "Not enough buffers available\n"); |
357 | return 0; | |
358 | } | |
359 | ||
360 | return 1; | |
361 | } | |
362 | ||
363 | static void job_abort(void *priv) | |
364 | { | |
365 | struct m2mtest_ctx *ctx = priv; | |
366 | ||
367 | /* Will cancel the transaction in the next interrupt handler */ | |
368 | ctx->aborting = 1; | |
369 | } | |
370 | ||
371 | /* device_run() - prepares and starts the device | |
372 | * | |
373 | * This simulates all the immediate preparations required before starting | |
374 | * a device. This will be called by the framework when it decides to schedule | |
375 | * a particular instance. | |
376 | */ | |
377 | static void device_run(void *priv) | |
378 | { | |
379 | struct m2mtest_ctx *ctx = priv; | |
380 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 381 | struct vb2_buffer *src_buf, *dst_buf; |
96d8eab5 | 382 | |
20702ebc SN |
383 | src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); |
384 | dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); | |
96d8eab5 PO |
385 | |
386 | device_process(ctx, src_buf, dst_buf); | |
387 | ||
388 | /* Run a timer, which simulates a hardware irq */ | |
389 | schedule_irq(dev, ctx->transtime); | |
390 | } | |
391 | ||
96d8eab5 PO |
392 | static void device_isr(unsigned long priv) |
393 | { | |
394 | struct m2mtest_dev *m2mtest_dev = (struct m2mtest_dev *)priv; | |
395 | struct m2mtest_ctx *curr_ctx; | |
d80ee38c | 396 | struct vb2_buffer *src_vb, *dst_vb; |
96d8eab5 PO |
397 | unsigned long flags; |
398 | ||
399 | curr_ctx = v4l2_m2m_get_curr_priv(m2mtest_dev->m2m_dev); | |
400 | ||
401 | if (NULL == curr_ctx) { | |
26fdcf09 | 402 | pr_err("Instance released before the end of transaction\n"); |
96d8eab5 PO |
403 | return; |
404 | } | |
405 | ||
20702ebc SN |
406 | src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx); |
407 | dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx); | |
d80ee38c | 408 | |
96d8eab5 PO |
409 | curr_ctx->num_processed++; |
410 | ||
d80ee38c MS |
411 | spin_lock_irqsave(&m2mtest_dev->irqlock, flags); |
412 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); | |
413 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); | |
414 | spin_unlock_irqrestore(&m2mtest_dev->irqlock, flags); | |
415 | ||
96d8eab5 PO |
416 | if (curr_ctx->num_processed == curr_ctx->translen |
417 | || curr_ctx->aborting) { | |
418 | dprintk(curr_ctx->dev, "Finishing transaction\n"); | |
419 | curr_ctx->num_processed = 0; | |
20702ebc | 420 | v4l2_m2m_job_finish(m2mtest_dev->m2m_dev, curr_ctx->fh.m2m_ctx); |
96d8eab5 | 421 | } else { |
96d8eab5 PO |
422 | device_run(curr_ctx); |
423 | } | |
424 | } | |
425 | ||
96d8eab5 PO |
426 | /* |
427 | * video ioctls | |
428 | */ | |
429 | static int vidioc_querycap(struct file *file, void *priv, | |
430 | struct v4l2_capability *cap) | |
431 | { | |
432 | strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1); | |
433 | strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1); | |
72c2af6e HV |
434 | snprintf(cap->bus_info, sizeof(cap->bus_info), |
435 | "platform:%s", MEM2MEM_NAME); | |
00424c7e | 436 | cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; |
b0d14996 | 437 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
96d8eab5 PO |
438 | return 0; |
439 | } | |
440 | ||
441 | static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) | |
442 | { | |
443 | int i, num; | |
444 | struct m2mtest_fmt *fmt; | |
445 | ||
446 | num = 0; | |
447 | ||
448 | for (i = 0; i < NUM_FORMATS; ++i) { | |
449 | if (formats[i].types & type) { | |
450 | /* index-th format of type type found ? */ | |
451 | if (num == f->index) | |
452 | break; | |
453 | /* Correct type but haven't reached our index yet, | |
454 | * just increment per-type index */ | |
455 | ++num; | |
456 | } | |
457 | } | |
458 | ||
459 | if (i < NUM_FORMATS) { | |
460 | /* Format found */ | |
461 | fmt = &formats[i]; | |
462 | strncpy(f->description, fmt->name, sizeof(f->description) - 1); | |
463 | f->pixelformat = fmt->fourcc; | |
464 | return 0; | |
465 | } | |
466 | ||
467 | /* Format not found */ | |
468 | return -EINVAL; | |
469 | } | |
470 | ||
471 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
472 | struct v4l2_fmtdesc *f) | |
473 | { | |
474 | return enum_fmt(f, MEM2MEM_CAPTURE); | |
475 | } | |
476 | ||
477 | static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, | |
478 | struct v4l2_fmtdesc *f) | |
479 | { | |
480 | return enum_fmt(f, MEM2MEM_OUTPUT); | |
481 | } | |
482 | ||
483 | static int vidioc_g_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
484 | { | |
d80ee38c | 485 | struct vb2_queue *vq; |
96d8eab5 PO |
486 | struct m2mtest_q_data *q_data; |
487 | ||
20702ebc | 488 | vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); |
96d8eab5 PO |
489 | if (!vq) |
490 | return -EINVAL; | |
491 | ||
9f4161a6 | 492 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
493 | |
494 | f->fmt.pix.width = q_data->width; | |
495 | f->fmt.pix.height = q_data->height; | |
d80ee38c | 496 | f->fmt.pix.field = V4L2_FIELD_NONE; |
96d8eab5 PO |
497 | f->fmt.pix.pixelformat = q_data->fmt->fourcc; |
498 | f->fmt.pix.bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
499 | f->fmt.pix.sizeimage = q_data->sizeimage; | |
47556ffa | 500 | f->fmt.pix.colorspace = ctx->colorspace; |
96d8eab5 PO |
501 | |
502 | return 0; | |
503 | } | |
504 | ||
505 | static int vidioc_g_fmt_vid_out(struct file *file, void *priv, | |
506 | struct v4l2_format *f) | |
507 | { | |
d3dd59c2 | 508 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
509 | } |
510 | ||
511 | static int vidioc_g_fmt_vid_cap(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_try_fmt(struct v4l2_format *f, struct m2mtest_fmt *fmt) | |
518 | { | |
96d8eab5 PO |
519 | /* V4L2 specification suggests the driver corrects the format struct |
520 | * if any of the dimensions is unsupported */ | |
96d8eab5 PO |
521 | if (f->fmt.pix.height < MIN_H) |
522 | f->fmt.pix.height = MIN_H; | |
523 | else if (f->fmt.pix.height > MAX_H) | |
524 | f->fmt.pix.height = MAX_H; | |
525 | ||
526 | if (f->fmt.pix.width < MIN_W) | |
527 | f->fmt.pix.width = MIN_W; | |
528 | else if (f->fmt.pix.width > MAX_W) | |
529 | f->fmt.pix.width = MAX_W; | |
530 | ||
531 | f->fmt.pix.width &= ~DIM_ALIGN_MASK; | |
532 | f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; | |
533 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
5c3112b5 | 534 | f->fmt.pix.field = V4L2_FIELD_NONE; |
96d8eab5 PO |
535 | |
536 | return 0; | |
537 | } | |
538 | ||
539 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
540 | struct v4l2_format *f) | |
541 | { | |
542 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 543 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
544 | |
545 | fmt = find_format(f); | |
4e8ec0a4 HV |
546 | if (!fmt) { |
547 | f->fmt.pix.pixelformat = formats[0].fourcc; | |
548 | fmt = find_format(f); | |
549 | } | |
550 | if (!(fmt->types & MEM2MEM_CAPTURE)) { | |
96d8eab5 PO |
551 | v4l2_err(&ctx->dev->v4l2_dev, |
552 | "Fourcc format (0x%08x) invalid.\n", | |
553 | f->fmt.pix.pixelformat); | |
554 | return -EINVAL; | |
555 | } | |
47556ffa | 556 | f->fmt.pix.colorspace = ctx->colorspace; |
96d8eab5 PO |
557 | |
558 | return vidioc_try_fmt(f, fmt); | |
559 | } | |
560 | ||
561 | static int vidioc_try_fmt_vid_out(struct file *file, void *priv, | |
562 | struct v4l2_format *f) | |
563 | { | |
564 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 565 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
566 | |
567 | fmt = find_format(f); | |
4e8ec0a4 HV |
568 | if (!fmt) { |
569 | f->fmt.pix.pixelformat = formats[0].fourcc; | |
570 | fmt = find_format(f); | |
571 | } | |
572 | if (!(fmt->types & MEM2MEM_OUTPUT)) { | |
96d8eab5 PO |
573 | v4l2_err(&ctx->dev->v4l2_dev, |
574 | "Fourcc format (0x%08x) invalid.\n", | |
575 | f->fmt.pix.pixelformat); | |
576 | return -EINVAL; | |
577 | } | |
47556ffa HV |
578 | if (!f->fmt.pix.colorspace) |
579 | f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; | |
96d8eab5 PO |
580 | |
581 | return vidioc_try_fmt(f, fmt); | |
582 | } | |
583 | ||
584 | static int vidioc_s_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
585 | { | |
586 | struct m2mtest_q_data *q_data; | |
d80ee38c | 587 | struct vb2_queue *vq; |
96d8eab5 | 588 | |
20702ebc | 589 | vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); |
96d8eab5 PO |
590 | if (!vq) |
591 | return -EINVAL; | |
592 | ||
9f4161a6 | 593 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
594 | if (!q_data) |
595 | return -EINVAL; | |
596 | ||
d80ee38c | 597 | if (vb2_is_busy(vq)) { |
96d8eab5 | 598 | v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); |
07e80305 | 599 | return -EBUSY; |
96d8eab5 PO |
600 | } |
601 | ||
602 | q_data->fmt = find_format(f); | |
603 | q_data->width = f->fmt.pix.width; | |
604 | q_data->height = f->fmt.pix.height; | |
605 | q_data->sizeimage = q_data->width * q_data->height | |
606 | * q_data->fmt->depth >> 3; | |
96d8eab5 PO |
607 | |
608 | dprintk(ctx->dev, | |
609 | "Setting format for type %d, wxh: %dx%d, fmt: %d\n", | |
610 | f->type, q_data->width, q_data->height, q_data->fmt->fourcc); | |
611 | ||
07e80305 | 612 | return 0; |
96d8eab5 PO |
613 | } |
614 | ||
615 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
616 | struct v4l2_format *f) | |
617 | { | |
618 | int ret; | |
619 | ||
620 | ret = vidioc_try_fmt_vid_cap(file, priv, f); | |
621 | if (ret) | |
622 | return ret; | |
623 | ||
d3dd59c2 | 624 | return vidioc_s_fmt(file2ctx(file), f); |
96d8eab5 PO |
625 | } |
626 | ||
627 | static int vidioc_s_fmt_vid_out(struct file *file, void *priv, | |
628 | struct v4l2_format *f) | |
629 | { | |
47556ffa | 630 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
631 | int ret; |
632 | ||
633 | ret = vidioc_try_fmt_vid_out(file, priv, f); | |
634 | if (ret) | |
635 | return ret; | |
636 | ||
47556ffa HV |
637 | ret = vidioc_s_fmt(file2ctx(file), f); |
638 | if (!ret) | |
639 | ctx->colorspace = f->fmt.pix.colorspace; | |
640 | return ret; | |
96d8eab5 PO |
641 | } |
642 | ||
d3dd59c2 | 643 | static int m2mtest_s_ctrl(struct v4l2_ctrl *ctrl) |
96d8eab5 | 644 | { |
d3dd59c2 HV |
645 | struct m2mtest_ctx *ctx = |
646 | container_of(ctrl->handler, struct m2mtest_ctx, hdl); | |
96d8eab5 PO |
647 | |
648 | switch (ctrl->id) { | |
80072871 | 649 | case V4L2_CID_HFLIP: |
d3dd59c2 | 650 | if (ctrl->val) |
80072871 TM |
651 | ctx->mode |= MEM2MEM_HFLIP; |
652 | else | |
653 | ctx->mode &= ~MEM2MEM_HFLIP; | |
654 | break; | |
655 | ||
656 | case V4L2_CID_VFLIP: | |
d3dd59c2 | 657 | if (ctrl->val) |
80072871 TM |
658 | ctx->mode |= MEM2MEM_VFLIP; |
659 | else | |
660 | ctx->mode &= ~MEM2MEM_VFLIP; | |
661 | break; | |
662 | ||
96d8eab5 | 663 | case V4L2_CID_TRANS_TIME_MSEC: |
d3dd59c2 | 664 | ctx->transtime = ctrl->val; |
96d8eab5 PO |
665 | break; |
666 | ||
667 | case V4L2_CID_TRANS_NUM_BUFS: | |
d3dd59c2 | 668 | ctx->translen = ctrl->val; |
96d8eab5 PO |
669 | break; |
670 | ||
671 | default: | |
672 | v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n"); | |
673 | return -EINVAL; | |
674 | } | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
d3dd59c2 HV |
679 | static const struct v4l2_ctrl_ops m2mtest_ctrl_ops = { |
680 | .s_ctrl = m2mtest_s_ctrl, | |
681 | }; | |
682 | ||
96d8eab5 PO |
683 | |
684 | static const struct v4l2_ioctl_ops m2mtest_ioctl_ops = { | |
685 | .vidioc_querycap = vidioc_querycap, | |
686 | ||
687 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
688 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
689 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
690 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
691 | ||
692 | .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, | |
693 | .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, | |
694 | .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, | |
695 | .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, | |
696 | ||
20702ebc SN |
697 | .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, |
698 | .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, | |
699 | .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, | |
700 | .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, | |
96d8eab5 | 701 | |
20702ebc SN |
702 | .vidioc_streamon = v4l2_m2m_ioctl_streamon, |
703 | .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, | |
96d8eab5 | 704 | |
97a3c902 HV |
705 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
706 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
96d8eab5 PO |
707 | }; |
708 | ||
709 | ||
710 | /* | |
711 | * Queue operations | |
712 | */ | |
713 | ||
fc714e70 GL |
714 | static int m2mtest_queue_setup(struct vb2_queue *vq, |
715 | const struct v4l2_format *fmt, | |
716 | unsigned int *nbuffers, unsigned int *nplanes, | |
717 | unsigned int sizes[], void *alloc_ctxs[]) | |
96d8eab5 | 718 | { |
d80ee38c | 719 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vq); |
96d8eab5 | 720 | struct m2mtest_q_data *q_data; |
d80ee38c | 721 | unsigned int size, count = *nbuffers; |
96d8eab5 | 722 | |
9f4161a6 | 723 | q_data = get_q_data(ctx, vq->type); |
96d8eab5 | 724 | |
d80ee38c MS |
725 | size = q_data->width * q_data->height * q_data->fmt->depth >> 3; |
726 | ||
727 | while (size * count > MEM2MEM_VID_MEM_LIMIT) | |
728 | (count)--; | |
96d8eab5 | 729 | |
d80ee38c MS |
730 | *nplanes = 1; |
731 | *nbuffers = count; | |
732 | sizes[0] = size; | |
96d8eab5 | 733 | |
d80ee38c MS |
734 | /* |
735 | * videobuf2-vmalloc allocator is context-less so no need to set | |
736 | * alloc_ctxs array. | |
737 | */ | |
96d8eab5 | 738 | |
d80ee38c | 739 | dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); |
96d8eab5 PO |
740 | |
741 | return 0; | |
742 | } | |
743 | ||
d80ee38c | 744 | static int m2mtest_buf_prepare(struct vb2_buffer *vb) |
96d8eab5 | 745 | { |
d80ee38c | 746 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
96d8eab5 | 747 | struct m2mtest_q_data *q_data; |
96d8eab5 | 748 | |
d80ee38c | 749 | dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); |
96d8eab5 | 750 | |
9f4161a6 | 751 | q_data = get_q_data(ctx, vb->vb2_queue->type); |
5c3112b5 HV |
752 | if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) { |
753 | if (vb->v4l2_buf.field == V4L2_FIELD_ANY) | |
754 | vb->v4l2_buf.field = V4L2_FIELD_NONE; | |
755 | if (vb->v4l2_buf.field != V4L2_FIELD_NONE) { | |
756 | dprintk(ctx->dev, "%s field isn't supported\n", | |
757 | __func__); | |
758 | return -EINVAL; | |
759 | } | |
760 | } | |
96d8eab5 | 761 | |
d80ee38c MS |
762 | if (vb2_plane_size(vb, 0) < q_data->sizeimage) { |
763 | dprintk(ctx->dev, "%s data will not fit into plane (%lu < %lu)\n", | |
764 | __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); | |
96d8eab5 PO |
765 | return -EINVAL; |
766 | } | |
767 | ||
d80ee38c | 768 | vb2_set_plane_payload(vb, 0, q_data->sizeimage); |
96d8eab5 PO |
769 | |
770 | return 0; | |
96d8eab5 PO |
771 | } |
772 | ||
d80ee38c | 773 | static void m2mtest_buf_queue(struct vb2_buffer *vb) |
96d8eab5 | 774 | { |
d80ee38c | 775 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
ca5f5fdb | 776 | |
20702ebc | 777 | v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb); |
0f910bf0 MO |
778 | } |
779 | ||
ca5f5fdb HV |
780 | static int m2mtest_start_streaming(struct vb2_queue *q, unsigned count) |
781 | { | |
782 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
783 | struct m2mtest_q_data *q_data = get_q_data(ctx, q->type); | |
784 | ||
785 | q_data->sequence = 0; | |
786 | return 0; | |
787 | } | |
788 | ||
e37559b2 | 789 | static void m2mtest_stop_streaming(struct vb2_queue *q) |
a773632c HV |
790 | { |
791 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
792 | struct vb2_buffer *vb; | |
793 | unsigned long flags; | |
794 | ||
795 | for (;;) { | |
796 | if (V4L2_TYPE_IS_OUTPUT(q->type)) | |
797 | vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); | |
798 | else | |
799 | vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); | |
800 | if (vb == NULL) | |
e37559b2 | 801 | return; |
a773632c HV |
802 | spin_lock_irqsave(&ctx->dev->irqlock, flags); |
803 | v4l2_m2m_buf_done(vb, VB2_BUF_STATE_ERROR); | |
804 | spin_unlock_irqrestore(&ctx->dev->irqlock, flags); | |
805 | } | |
a773632c HV |
806 | } |
807 | ||
d80ee38c MS |
808 | static struct vb2_ops m2mtest_qops = { |
809 | .queue_setup = m2mtest_queue_setup, | |
810 | .buf_prepare = m2mtest_buf_prepare, | |
811 | .buf_queue = m2mtest_buf_queue, | |
ca5f5fdb | 812 | .start_streaming = m2mtest_start_streaming, |
a773632c | 813 | .stop_streaming = m2mtest_stop_streaming, |
20702ebc SN |
814 | .wait_prepare = vb2_ops_wait_prepare, |
815 | .wait_finish = vb2_ops_wait_finish, | |
96d8eab5 PO |
816 | }; |
817 | ||
d80ee38c | 818 | static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) |
96d8eab5 PO |
819 | { |
820 | struct m2mtest_ctx *ctx = priv; | |
d80ee38c | 821 | int ret; |
96d8eab5 | 822 | |
d80ee38c | 823 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
782f36ca | 824 | src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; |
d80ee38c MS |
825 | src_vq->drv_priv = ctx; |
826 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
827 | src_vq->ops = &m2mtest_qops; | |
828 | src_vq->mem_ops = &vb2_vmalloc_memops; | |
ade48681 | 829 | src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
20702ebc | 830 | src_vq->lock = &ctx->dev->dev_mutex; |
d80ee38c MS |
831 | |
832 | ret = vb2_queue_init(src_vq); | |
833 | if (ret) | |
834 | return ret; | |
96d8eab5 | 835 | |
d80ee38c | 836 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
782f36ca | 837 | dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; |
d80ee38c MS |
838 | dst_vq->drv_priv = ctx; |
839 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
840 | dst_vq->ops = &m2mtest_qops; | |
841 | dst_vq->mem_ops = &vb2_vmalloc_memops; | |
ade48681 | 842 | dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
20702ebc | 843 | dst_vq->lock = &ctx->dev->dev_mutex; |
d80ee38c MS |
844 | |
845 | return vb2_queue_init(dst_vq); | |
846 | } | |
96d8eab5 | 847 | |
d3dd59c2 HV |
848 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_time_msec = { |
849 | .ops = &m2mtest_ctrl_ops, | |
850 | .id = V4L2_CID_TRANS_TIME_MSEC, | |
851 | .name = "Transaction Time (msec)", | |
852 | .type = V4L2_CTRL_TYPE_INTEGER, | |
43405831 | 853 | .def = MEM2MEM_DEF_TRANSTIME, |
d3dd59c2 HV |
854 | .min = 1, |
855 | .max = 10001, | |
43405831 | 856 | .step = 1, |
d3dd59c2 HV |
857 | }; |
858 | ||
859 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_num_bufs = { | |
860 | .ops = &m2mtest_ctrl_ops, | |
861 | .id = V4L2_CID_TRANS_NUM_BUFS, | |
862 | .name = "Buffers Per Transaction", | |
863 | .type = V4L2_CTRL_TYPE_INTEGER, | |
864 | .def = 1, | |
865 | .min = 1, | |
866 | .max = MEM2MEM_DEF_NUM_BUFS, | |
867 | .step = 1, | |
868 | }; | |
869 | ||
96d8eab5 PO |
870 | /* |
871 | * File operations | |
872 | */ | |
873 | static int m2mtest_open(struct file *file) | |
874 | { | |
875 | struct m2mtest_dev *dev = video_drvdata(file); | |
876 | struct m2mtest_ctx *ctx = NULL; | |
d3dd59c2 | 877 | struct v4l2_ctrl_handler *hdl; |
f4694039 | 878 | int rc = 0; |
96d8eab5 | 879 | |
f4694039 HV |
880 | if (mutex_lock_interruptible(&dev->dev_mutex)) |
881 | return -ERESTARTSYS; | |
56ed221f | 882 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
f4694039 HV |
883 | if (!ctx) { |
884 | rc = -ENOMEM; | |
885 | goto open_unlock; | |
886 | } | |
96d8eab5 | 887 | |
d3dd59c2 HV |
888 | v4l2_fh_init(&ctx->fh, video_devdata(file)); |
889 | file->private_data = &ctx->fh; | |
96d8eab5 | 890 | ctx->dev = dev; |
d3dd59c2 HV |
891 | hdl = &ctx->hdl; |
892 | v4l2_ctrl_handler_init(hdl, 4); | |
893 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); | |
894 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); | |
895 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_time_msec, NULL); | |
896 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_num_bufs, NULL); | |
897 | if (hdl->error) { | |
a7bd7756 | 898 | rc = hdl->error; |
d3dd59c2 | 899 | v4l2_ctrl_handler_free(hdl); |
a7bd7756 | 900 | goto open_unlock; |
d3dd59c2 HV |
901 | } |
902 | ctx->fh.ctrl_handler = hdl; | |
903 | v4l2_ctrl_handler_setup(hdl); | |
96d8eab5 | 904 | |
9f4161a6 | 905 | ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0]; |
47556ffa HV |
906 | ctx->q_data[V4L2_M2M_SRC].width = 640; |
907 | ctx->q_data[V4L2_M2M_SRC].height = 480; | |
908 | ctx->q_data[V4L2_M2M_SRC].sizeimage = | |
909 | ctx->q_data[V4L2_M2M_SRC].width * | |
910 | ctx->q_data[V4L2_M2M_SRC].height * | |
911 | (ctx->q_data[V4L2_M2M_SRC].fmt->depth >> 3); | |
912 | ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC]; | |
913 | ctx->colorspace = V4L2_COLORSPACE_REC709; | |
9f4161a6 | 914 | |
20702ebc | 915 | ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); |
d80ee38c | 916 | |
20702ebc SN |
917 | if (IS_ERR(ctx->fh.m2m_ctx)) { |
918 | rc = PTR_ERR(ctx->fh.m2m_ctx); | |
16ee9bb1 | 919 | |
d3dd59c2 | 920 | v4l2_ctrl_handler_free(hdl); |
96d8eab5 | 921 | kfree(ctx); |
f4694039 | 922 | goto open_unlock; |
96d8eab5 PO |
923 | } |
924 | ||
d3dd59c2 | 925 | v4l2_fh_add(&ctx->fh); |
96d8eab5 PO |
926 | atomic_inc(&dev->num_inst); |
927 | ||
20702ebc SN |
928 | dprintk(dev, "Created instance: %p, m2m_ctx: %p\n", |
929 | ctx, ctx->fh.m2m_ctx); | |
96d8eab5 | 930 | |
f4694039 HV |
931 | open_unlock: |
932 | mutex_unlock(&dev->dev_mutex); | |
a7bd7756 | 933 | return rc; |
96d8eab5 PO |
934 | } |
935 | ||
936 | static int m2mtest_release(struct file *file) | |
937 | { | |
938 | struct m2mtest_dev *dev = video_drvdata(file); | |
d3dd59c2 | 939 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
940 | |
941 | dprintk(dev, "Releasing instance %p\n", ctx); | |
942 | ||
d3dd59c2 HV |
943 | v4l2_fh_del(&ctx->fh); |
944 | v4l2_fh_exit(&ctx->fh); | |
945 | v4l2_ctrl_handler_free(&ctx->hdl); | |
f4694039 | 946 | mutex_lock(&dev->dev_mutex); |
20702ebc | 947 | v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); |
f4694039 | 948 | mutex_unlock(&dev->dev_mutex); |
96d8eab5 PO |
949 | kfree(ctx); |
950 | ||
951 | atomic_dec(&dev->num_inst); | |
952 | ||
953 | return 0; | |
954 | } | |
955 | ||
96d8eab5 PO |
956 | static const struct v4l2_file_operations m2mtest_fops = { |
957 | .owner = THIS_MODULE, | |
958 | .open = m2mtest_open, | |
959 | .release = m2mtest_release, | |
20702ebc | 960 | .poll = v4l2_m2m_fop_poll, |
07e80305 | 961 | .unlocked_ioctl = video_ioctl2, |
20702ebc | 962 | .mmap = v4l2_m2m_fop_mmap, |
96d8eab5 PO |
963 | }; |
964 | ||
965 | static struct video_device m2mtest_videodev = { | |
966 | .name = MEM2MEM_NAME, | |
954f340f | 967 | .vfl_dir = VFL_DIR_M2M, |
96d8eab5 PO |
968 | .fops = &m2mtest_fops, |
969 | .ioctl_ops = &m2mtest_ioctl_ops, | |
970 | .minor = -1, | |
971 | .release = video_device_release, | |
972 | }; | |
973 | ||
974 | static struct v4l2_m2m_ops m2m_ops = { | |
975 | .device_run = device_run, | |
976 | .job_ready = job_ready, | |
977 | .job_abort = job_abort, | |
978 | }; | |
979 | ||
980 | static int m2mtest_probe(struct platform_device *pdev) | |
981 | { | |
982 | struct m2mtest_dev *dev; | |
983 | struct video_device *vfd; | |
984 | int ret; | |
985 | ||
38a7996c | 986 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); |
96d8eab5 PO |
987 | if (!dev) |
988 | return -ENOMEM; | |
989 | ||
990 | spin_lock_init(&dev->irqlock); | |
991 | ||
992 | ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); | |
993 | if (ret) | |
38a7996c | 994 | return ret; |
96d8eab5 PO |
995 | |
996 | atomic_set(&dev->num_inst, 0); | |
997 | mutex_init(&dev->dev_mutex); | |
998 | ||
999 | vfd = video_device_alloc(); | |
1000 | if (!vfd) { | |
1001 | v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); | |
1002 | ret = -ENOMEM; | |
1003 | goto unreg_dev; | |
1004 | } | |
1005 | ||
1006 | *vfd = m2mtest_videodev; | |
07e80305 | 1007 | vfd->lock = &dev->dev_mutex; |
8f484d87 | 1008 | vfd->v4l2_dev = &dev->v4l2_dev; |
96d8eab5 PO |
1009 | |
1010 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); | |
1011 | if (ret) { | |
1012 | v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); | |
1013 | goto rel_vdev; | |
1014 | } | |
1015 | ||
1016 | video_set_drvdata(vfd, dev); | |
1017 | snprintf(vfd->name, sizeof(vfd->name), "%s", m2mtest_videodev.name); | |
1018 | dev->vfd = vfd; | |
8f484d87 | 1019 | v4l2_info(&dev->v4l2_dev, |
96d8eab5 PO |
1020 | "Device registered as /dev/video%d\n", vfd->num); |
1021 | ||
1022 | setup_timer(&dev->timer, device_isr, (long)dev); | |
1023 | platform_set_drvdata(pdev, dev); | |
1024 | ||
1025 | dev->m2m_dev = v4l2_m2m_init(&m2m_ops); | |
1026 | if (IS_ERR(dev->m2m_dev)) { | |
1027 | v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); | |
1028 | ret = PTR_ERR(dev->m2m_dev); | |
1029 | goto err_m2m; | |
1030 | } | |
1031 | ||
1032 | return 0; | |
1033 | ||
1034 | err_m2m: | |
b7e13ef7 | 1035 | v4l2_m2m_release(dev->m2m_dev); |
96d8eab5 PO |
1036 | video_unregister_device(dev->vfd); |
1037 | rel_vdev: | |
1038 | video_device_release(vfd); | |
1039 | unreg_dev: | |
1040 | v4l2_device_unregister(&dev->v4l2_dev); | |
96d8eab5 PO |
1041 | |
1042 | return ret; | |
1043 | } | |
1044 | ||
1045 | static int m2mtest_remove(struct platform_device *pdev) | |
1046 | { | |
ede79413 | 1047 | struct m2mtest_dev *dev = platform_get_drvdata(pdev); |
96d8eab5 PO |
1048 | |
1049 | v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_TEST_MODULE_NAME); | |
1050 | v4l2_m2m_release(dev->m2m_dev); | |
1051 | del_timer_sync(&dev->timer); | |
1052 | video_unregister_device(dev->vfd); | |
1053 | v4l2_device_unregister(&dev->v4l2_dev); | |
96d8eab5 PO |
1054 | |
1055 | return 0; | |
1056 | } | |
1057 | ||
1058 | static struct platform_driver m2mtest_pdrv = { | |
1059 | .probe = m2mtest_probe, | |
1060 | .remove = m2mtest_remove, | |
1061 | .driver = { | |
1062 | .name = MEM2MEM_NAME, | |
1063 | .owner = THIS_MODULE, | |
1064 | }, | |
1065 | }; | |
1066 | ||
1067 | static void __exit m2mtest_exit(void) | |
1068 | { | |
1069 | platform_driver_unregister(&m2mtest_pdrv); | |
1070 | platform_device_unregister(&m2mtest_pdev); | |
1071 | } | |
1072 | ||
1073 | static int __init m2mtest_init(void) | |
1074 | { | |
1075 | int ret; | |
1076 | ||
1077 | ret = platform_device_register(&m2mtest_pdev); | |
1078 | if (ret) | |
1079 | return ret; | |
1080 | ||
1081 | ret = platform_driver_register(&m2mtest_pdrv); | |
1082 | if (ret) | |
1083 | platform_device_unregister(&m2mtest_pdev); | |
1084 | ||
1085 | return 0; | |
1086 | } | |
1087 | ||
1088 | module_init(m2mtest_init); | |
1089 | module_exit(m2mtest_exit); |