]>
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 PO |
40 | |
41 | #define MIN_W 32 | |
42 | #define MIN_H 32 | |
43 | #define MAX_W 640 | |
44 | #define MAX_H 480 | |
9ce3ce4d | 45 | #define DIM_ALIGN_MASK 7 /* 8-byte alignment for line length */ |
96d8eab5 PO |
46 | |
47 | /* Flags that indicate a format can be used for capture/output */ | |
48 | #define MEM2MEM_CAPTURE (1 << 0) | |
49 | #define MEM2MEM_OUTPUT (1 << 1) | |
50 | ||
51 | #define MEM2MEM_NAME "m2m-testdev" | |
52 | ||
53 | /* Per queue */ | |
54 | #define MEM2MEM_DEF_NUM_BUFS VIDEO_MAX_FRAME | |
55 | /* In bytes, per queue */ | |
56 | #define MEM2MEM_VID_MEM_LIMIT (16 * 1024 * 1024) | |
57 | ||
58 | /* Default transaction time in msec */ | |
59 | #define MEM2MEM_DEF_TRANSTIME 1000 | |
60 | /* Default number of buffers per transaction */ | |
61 | #define MEM2MEM_DEF_TRANSLEN 1 | |
62 | #define MEM2MEM_COLOR_STEP (0xff >> 4) | |
63 | #define MEM2MEM_NUM_TILES 8 | |
64 | ||
80072871 TM |
65 | /* Flags that indicate processing mode */ |
66 | #define MEM2MEM_HFLIP (1 << 0) | |
67 | #define MEM2MEM_VFLIP (1 << 1) | |
68 | ||
96d8eab5 PO |
69 | #define dprintk(dev, fmt, arg...) \ |
70 | v4l2_dbg(1, 1, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) | |
71 | ||
72 | ||
73 | void m2mtest_dev_release(struct device *dev) | |
74 | {} | |
75 | ||
76 | static struct platform_device m2mtest_pdev = { | |
77 | .name = MEM2MEM_NAME, | |
78 | .dev.release = m2mtest_dev_release, | |
79 | }; | |
80 | ||
81 | struct m2mtest_fmt { | |
82 | char *name; | |
83 | u32 fourcc; | |
84 | int depth; | |
85 | /* Types the format can be used for */ | |
86 | u32 types; | |
87 | }; | |
88 | ||
89 | static struct m2mtest_fmt formats[] = { | |
90 | { | |
91 | .name = "RGB565 (BE)", | |
92 | .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ | |
93 | .depth = 16, | |
94 | /* Both capture and output format */ | |
95 | .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, | |
96 | }, | |
97 | { | |
98 | .name = "4:2:2, packed, YUYV", | |
99 | .fourcc = V4L2_PIX_FMT_YUYV, | |
100 | .depth = 16, | |
101 | /* Output-only format */ | |
102 | .types = MEM2MEM_OUTPUT, | |
103 | }, | |
104 | }; | |
105 | ||
d3dd59c2 HV |
106 | #define NUM_FORMATS ARRAY_SIZE(formats) |
107 | ||
96d8eab5 PO |
108 | /* Per-queue, driver-specific private data */ |
109 | struct m2mtest_q_data { | |
110 | unsigned int width; | |
111 | unsigned int height; | |
112 | unsigned int sizeimage; | |
113 | struct m2mtest_fmt *fmt; | |
114 | }; | |
115 | ||
116 | enum { | |
117 | V4L2_M2M_SRC = 0, | |
118 | V4L2_M2M_DST = 1, | |
119 | }; | |
120 | ||
d3dd59c2 HV |
121 | #define V4L2_CID_TRANS_TIME_MSEC (V4L2_CID_USER_BASE + 0x1000) |
122 | #define V4L2_CID_TRANS_NUM_BUFS (V4L2_CID_USER_BASE + 0x1001) | |
96d8eab5 PO |
123 | |
124 | static struct m2mtest_fmt *find_format(struct v4l2_format *f) | |
125 | { | |
126 | struct m2mtest_fmt *fmt; | |
127 | unsigned int k; | |
128 | ||
129 | for (k = 0; k < NUM_FORMATS; k++) { | |
130 | fmt = &formats[k]; | |
131 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
132 | break; | |
133 | } | |
134 | ||
135 | if (k == NUM_FORMATS) | |
136 | return NULL; | |
137 | ||
138 | return &formats[k]; | |
139 | } | |
140 | ||
141 | struct m2mtest_dev { | |
142 | struct v4l2_device v4l2_dev; | |
143 | struct video_device *vfd; | |
144 | ||
145 | atomic_t num_inst; | |
146 | struct mutex dev_mutex; | |
147 | spinlock_t irqlock; | |
148 | ||
149 | struct timer_list timer; | |
150 | ||
151 | struct v4l2_m2m_dev *m2m_dev; | |
152 | }; | |
153 | ||
154 | struct m2mtest_ctx { | |
d3dd59c2 | 155 | struct v4l2_fh fh; |
96d8eab5 PO |
156 | struct m2mtest_dev *dev; |
157 | ||
d3dd59c2 HV |
158 | struct v4l2_ctrl_handler hdl; |
159 | ||
96d8eab5 PO |
160 | /* Processed buffers in this transaction */ |
161 | u8 num_processed; | |
162 | ||
163 | /* Transaction length (i.e. how many buffers per transaction) */ | |
164 | u32 translen; | |
165 | /* Transaction time (i.e. simulated processing time) in milliseconds */ | |
166 | u32 transtime; | |
167 | ||
168 | /* Abort requested by m2m */ | |
169 | int aborting; | |
170 | ||
80072871 TM |
171 | /* Processing mode */ |
172 | int mode; | |
173 | ||
96d8eab5 | 174 | struct v4l2_m2m_ctx *m2m_ctx; |
9f4161a6 TM |
175 | |
176 | /* Source and destination queue data */ | |
177 | struct m2mtest_q_data q_data[2]; | |
96d8eab5 PO |
178 | }; |
179 | ||
d3dd59c2 HV |
180 | static inline struct m2mtest_ctx *file2ctx(struct file *file) |
181 | { | |
182 | return container_of(file->private_data, struct m2mtest_ctx, fh); | |
183 | } | |
184 | ||
9f4161a6 TM |
185 | static struct m2mtest_q_data *get_q_data(struct m2mtest_ctx *ctx, |
186 | enum v4l2_buf_type type) | |
187 | { | |
188 | switch (type) { | |
189 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
190 | return &ctx->q_data[V4L2_M2M_SRC]; | |
191 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
192 | return &ctx->q_data[V4L2_M2M_DST]; | |
193 | default: | |
194 | BUG(); | |
195 | } | |
196 | return NULL; | |
197 | } | |
198 | ||
199 | ||
96d8eab5 | 200 | static int device_process(struct m2mtest_ctx *ctx, |
d80ee38c MS |
201 | struct vb2_buffer *in_vb, |
202 | struct vb2_buffer *out_vb) | |
96d8eab5 PO |
203 | { |
204 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 205 | struct m2mtest_q_data *q_data; |
96d8eab5 PO |
206 | u8 *p_in, *p_out; |
207 | int x, y, t, w; | |
208 | int tile_w, bytes_left; | |
d80ee38c | 209 | int width, height, bytesperline; |
96d8eab5 | 210 | |
9f4161a6 | 211 | q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); |
d80ee38c MS |
212 | |
213 | width = q_data->width; | |
214 | height = q_data->height; | |
215 | bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
216 | ||
217 | p_in = vb2_plane_vaddr(in_vb, 0); | |
218 | p_out = vb2_plane_vaddr(out_vb, 0); | |
96d8eab5 PO |
219 | if (!p_in || !p_out) { |
220 | v4l2_err(&dev->v4l2_dev, | |
221 | "Acquiring kernel pointers to buffers failed\n"); | |
222 | return -EFAULT; | |
223 | } | |
224 | ||
d80ee38c | 225 | if (vb2_plane_size(in_vb, 0) > vb2_plane_size(out_vb, 0)) { |
96d8eab5 PO |
226 | v4l2_err(&dev->v4l2_dev, "Output buffer is too small\n"); |
227 | return -EINVAL; | |
228 | } | |
229 | ||
d80ee38c | 230 | tile_w = (width * (q_data[V4L2_M2M_DST].fmt->depth >> 3)) |
96d8eab5 | 231 | / MEM2MEM_NUM_TILES; |
d80ee38c | 232 | bytes_left = bytesperline - tile_w * MEM2MEM_NUM_TILES; |
96d8eab5 PO |
233 | w = 0; |
234 | ||
80072871 TM |
235 | switch (ctx->mode) { |
236 | case MEM2MEM_HFLIP | MEM2MEM_VFLIP: | |
237 | p_out += bytesperline * height - bytes_left; | |
238 | for (y = 0; y < height; ++y) { | |
239 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
240 | if (w & 0x1) { | |
241 | for (x = 0; x < tile_w; ++x) | |
242 | *--p_out = *p_in++ + | |
243 | MEM2MEM_COLOR_STEP; | |
244 | } else { | |
245 | for (x = 0; x < tile_w; ++x) | |
246 | *--p_out = *p_in++ - | |
247 | MEM2MEM_COLOR_STEP; | |
248 | } | |
249 | ++w; | |
96d8eab5 | 250 | } |
80072871 TM |
251 | p_in += bytes_left; |
252 | p_out -= bytes_left; | |
253 | } | |
254 | break; | |
255 | ||
256 | case MEM2MEM_HFLIP: | |
257 | for (y = 0; y < height; ++y) { | |
258 | p_out += MEM2MEM_NUM_TILES * tile_w; | |
259 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
260 | if (w & 0x01) { | |
261 | for (x = 0; x < tile_w; ++x) | |
262 | *--p_out = *p_in++ + | |
263 | MEM2MEM_COLOR_STEP; | |
264 | } else { | |
265 | for (x = 0; x < tile_w; ++x) | |
266 | *--p_out = *p_in++ - | |
267 | MEM2MEM_COLOR_STEP; | |
268 | } | |
269 | ++w; | |
270 | } | |
271 | p_in += bytes_left; | |
272 | p_out += bytesperline; | |
273 | } | |
274 | break; | |
275 | ||
276 | case MEM2MEM_VFLIP: | |
277 | p_out += bytesperline * (height - 1); | |
278 | for (y = 0; y < height; ++y) { | |
279 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
280 | if (w & 0x1) { | |
281 | for (x = 0; x < tile_w; ++x) | |
282 | *p_out++ = *p_in++ + | |
283 | MEM2MEM_COLOR_STEP; | |
284 | } else { | |
285 | for (x = 0; x < tile_w; ++x) | |
286 | *p_out++ = *p_in++ - | |
287 | MEM2MEM_COLOR_STEP; | |
288 | } | |
289 | ++w; | |
290 | } | |
291 | p_in += bytes_left; | |
292 | p_out += bytes_left - 2 * bytesperline; | |
293 | } | |
294 | break; | |
295 | ||
296 | default: | |
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; | |
96d8eab5 | 312 | } |
96d8eab5 PO |
313 | } |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | static void schedule_irq(struct m2mtest_dev *dev, int msec_timeout) | |
319 | { | |
320 | dprintk(dev, "Scheduling a simulated irq\n"); | |
321 | mod_timer(&dev->timer, jiffies + msecs_to_jiffies(msec_timeout)); | |
322 | } | |
323 | ||
324 | /* | |
325 | * mem2mem callbacks | |
326 | */ | |
327 | ||
328 | /** | |
329 | * job_ready() - check whether an instance is ready to be scheduled to run | |
330 | */ | |
331 | static int job_ready(void *priv) | |
332 | { | |
333 | struct m2mtest_ctx *ctx = priv; | |
334 | ||
335 | if (v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) < ctx->translen | |
336 | || v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx) < ctx->translen) { | |
337 | dprintk(ctx->dev, "Not enough buffers available\n"); | |
338 | return 0; | |
339 | } | |
340 | ||
341 | return 1; | |
342 | } | |
343 | ||
344 | static void job_abort(void *priv) | |
345 | { | |
346 | struct m2mtest_ctx *ctx = priv; | |
347 | ||
348 | /* Will cancel the transaction in the next interrupt handler */ | |
349 | ctx->aborting = 1; | |
350 | } | |
351 | ||
d80ee38c MS |
352 | static void m2mtest_lock(void *priv) |
353 | { | |
354 | struct m2mtest_ctx *ctx = priv; | |
355 | struct m2mtest_dev *dev = ctx->dev; | |
356 | mutex_lock(&dev->dev_mutex); | |
357 | } | |
358 | ||
359 | static void m2mtest_unlock(void *priv) | |
360 | { | |
361 | struct m2mtest_ctx *ctx = priv; | |
362 | struct m2mtest_dev *dev = ctx->dev; | |
363 | mutex_unlock(&dev->dev_mutex); | |
364 | } | |
365 | ||
366 | ||
96d8eab5 PO |
367 | /* device_run() - prepares and starts the device |
368 | * | |
369 | * This simulates all the immediate preparations required before starting | |
370 | * a device. This will be called by the framework when it decides to schedule | |
371 | * a particular instance. | |
372 | */ | |
373 | static void device_run(void *priv) | |
374 | { | |
375 | struct m2mtest_ctx *ctx = priv; | |
376 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 377 | struct vb2_buffer *src_buf, *dst_buf; |
96d8eab5 PO |
378 | |
379 | src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); | |
380 | dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); | |
381 | ||
382 | device_process(ctx, src_buf, dst_buf); | |
383 | ||
384 | /* Run a timer, which simulates a hardware irq */ | |
385 | schedule_irq(dev, ctx->transtime); | |
386 | } | |
387 | ||
96d8eab5 PO |
388 | static void device_isr(unsigned long priv) |
389 | { | |
390 | struct m2mtest_dev *m2mtest_dev = (struct m2mtest_dev *)priv; | |
391 | struct m2mtest_ctx *curr_ctx; | |
d80ee38c | 392 | struct vb2_buffer *src_vb, *dst_vb; |
96d8eab5 PO |
393 | unsigned long flags; |
394 | ||
395 | curr_ctx = v4l2_m2m_get_curr_priv(m2mtest_dev->m2m_dev); | |
396 | ||
397 | if (NULL == curr_ctx) { | |
398 | printk(KERN_ERR | |
399 | "Instance released before the end of transaction\n"); | |
400 | return; | |
401 | } | |
402 | ||
d80ee38c MS |
403 | src_vb = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx); |
404 | dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx); | |
405 | ||
96d8eab5 PO |
406 | curr_ctx->num_processed++; |
407 | ||
d80ee38c MS |
408 | spin_lock_irqsave(&m2mtest_dev->irqlock, flags); |
409 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); | |
410 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); | |
411 | spin_unlock_irqrestore(&m2mtest_dev->irqlock, flags); | |
412 | ||
96d8eab5 PO |
413 | if (curr_ctx->num_processed == curr_ctx->translen |
414 | || curr_ctx->aborting) { | |
415 | dprintk(curr_ctx->dev, "Finishing transaction\n"); | |
416 | curr_ctx->num_processed = 0; | |
96d8eab5 PO |
417 | v4l2_m2m_job_finish(m2mtest_dev->m2m_dev, curr_ctx->m2m_ctx); |
418 | } else { | |
96d8eab5 PO |
419 | device_run(curr_ctx); |
420 | } | |
421 | } | |
422 | ||
96d8eab5 PO |
423 | /* |
424 | * video ioctls | |
425 | */ | |
426 | static int vidioc_querycap(struct file *file, void *priv, | |
427 | struct v4l2_capability *cap) | |
428 | { | |
429 | strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1); | |
430 | strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1); | |
b0d14996 HV |
431 | strlcpy(cap->bus_info, MEM2MEM_NAME, sizeof(cap->bus_info)); |
432 | cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT | |
96d8eab5 | 433 | | V4L2_CAP_STREAMING; |
b0d14996 | 434 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
96d8eab5 PO |
435 | return 0; |
436 | } | |
437 | ||
438 | static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) | |
439 | { | |
440 | int i, num; | |
441 | struct m2mtest_fmt *fmt; | |
442 | ||
443 | num = 0; | |
444 | ||
445 | for (i = 0; i < NUM_FORMATS; ++i) { | |
446 | if (formats[i].types & type) { | |
447 | /* index-th format of type type found ? */ | |
448 | if (num == f->index) | |
449 | break; | |
450 | /* Correct type but haven't reached our index yet, | |
451 | * just increment per-type index */ | |
452 | ++num; | |
453 | } | |
454 | } | |
455 | ||
456 | if (i < NUM_FORMATS) { | |
457 | /* Format found */ | |
458 | fmt = &formats[i]; | |
459 | strncpy(f->description, fmt->name, sizeof(f->description) - 1); | |
460 | f->pixelformat = fmt->fourcc; | |
461 | return 0; | |
462 | } | |
463 | ||
464 | /* Format not found */ | |
465 | return -EINVAL; | |
466 | } | |
467 | ||
468 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
469 | struct v4l2_fmtdesc *f) | |
470 | { | |
471 | return enum_fmt(f, MEM2MEM_CAPTURE); | |
472 | } | |
473 | ||
474 | static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, | |
475 | struct v4l2_fmtdesc *f) | |
476 | { | |
477 | return enum_fmt(f, MEM2MEM_OUTPUT); | |
478 | } | |
479 | ||
480 | static int vidioc_g_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
481 | { | |
d80ee38c | 482 | struct vb2_queue *vq; |
96d8eab5 PO |
483 | struct m2mtest_q_data *q_data; |
484 | ||
485 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
486 | if (!vq) | |
487 | return -EINVAL; | |
488 | ||
9f4161a6 | 489 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
490 | |
491 | f->fmt.pix.width = q_data->width; | |
492 | f->fmt.pix.height = q_data->height; | |
d80ee38c | 493 | f->fmt.pix.field = V4L2_FIELD_NONE; |
96d8eab5 PO |
494 | f->fmt.pix.pixelformat = q_data->fmt->fourcc; |
495 | f->fmt.pix.bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
496 | f->fmt.pix.sizeimage = q_data->sizeimage; | |
497 | ||
498 | return 0; | |
499 | } | |
500 | ||
501 | static int vidioc_g_fmt_vid_out(struct file *file, void *priv, | |
502 | struct v4l2_format *f) | |
503 | { | |
d3dd59c2 | 504 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
505 | } |
506 | ||
507 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
508 | struct v4l2_format *f) | |
509 | { | |
d3dd59c2 | 510 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
511 | } |
512 | ||
513 | static int vidioc_try_fmt(struct v4l2_format *f, struct m2mtest_fmt *fmt) | |
514 | { | |
515 | enum v4l2_field field; | |
516 | ||
517 | field = f->fmt.pix.field; | |
518 | ||
519 | if (field == V4L2_FIELD_ANY) | |
520 | field = V4L2_FIELD_NONE; | |
521 | else if (V4L2_FIELD_NONE != field) | |
522 | return -EINVAL; | |
523 | ||
524 | /* V4L2 specification suggests the driver corrects the format struct | |
525 | * if any of the dimensions is unsupported */ | |
526 | f->fmt.pix.field = field; | |
527 | ||
528 | if (f->fmt.pix.height < MIN_H) | |
529 | f->fmt.pix.height = MIN_H; | |
530 | else if (f->fmt.pix.height > MAX_H) | |
531 | f->fmt.pix.height = MAX_H; | |
532 | ||
533 | if (f->fmt.pix.width < MIN_W) | |
534 | f->fmt.pix.width = MIN_W; | |
535 | else if (f->fmt.pix.width > MAX_W) | |
536 | f->fmt.pix.width = MAX_W; | |
537 | ||
538 | f->fmt.pix.width &= ~DIM_ALIGN_MASK; | |
539 | f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; | |
540 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
545 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
546 | struct v4l2_format *f) | |
547 | { | |
548 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 549 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
550 | |
551 | fmt = find_format(f); | |
552 | if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) { | |
553 | v4l2_err(&ctx->dev->v4l2_dev, | |
554 | "Fourcc format (0x%08x) invalid.\n", | |
555 | f->fmt.pix.pixelformat); | |
556 | return -EINVAL; | |
557 | } | |
558 | ||
559 | return vidioc_try_fmt(f, fmt); | |
560 | } | |
561 | ||
562 | static int vidioc_try_fmt_vid_out(struct file *file, void *priv, | |
563 | struct v4l2_format *f) | |
564 | { | |
565 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 566 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
567 | |
568 | fmt = find_format(f); | |
569 | if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) { | |
570 | v4l2_err(&ctx->dev->v4l2_dev, | |
571 | "Fourcc format (0x%08x) invalid.\n", | |
572 | f->fmt.pix.pixelformat); | |
573 | return -EINVAL; | |
574 | } | |
575 | ||
576 | return vidioc_try_fmt(f, fmt); | |
577 | } | |
578 | ||
579 | static int vidioc_s_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
580 | { | |
581 | struct m2mtest_q_data *q_data; | |
d80ee38c | 582 | struct vb2_queue *vq; |
96d8eab5 PO |
583 | |
584 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
585 | if (!vq) | |
586 | return -EINVAL; | |
587 | ||
9f4161a6 | 588 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
589 | if (!q_data) |
590 | return -EINVAL; | |
591 | ||
d80ee38c | 592 | if (vb2_is_busy(vq)) { |
96d8eab5 | 593 | v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); |
07e80305 | 594 | return -EBUSY; |
96d8eab5 PO |
595 | } |
596 | ||
597 | q_data->fmt = find_format(f); | |
598 | q_data->width = f->fmt.pix.width; | |
599 | q_data->height = f->fmt.pix.height; | |
600 | q_data->sizeimage = q_data->width * q_data->height | |
601 | * q_data->fmt->depth >> 3; | |
96d8eab5 PO |
602 | |
603 | dprintk(ctx->dev, | |
604 | "Setting format for type %d, wxh: %dx%d, fmt: %d\n", | |
605 | f->type, q_data->width, q_data->height, q_data->fmt->fourcc); | |
606 | ||
07e80305 | 607 | return 0; |
96d8eab5 PO |
608 | } |
609 | ||
610 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
611 | struct v4l2_format *f) | |
612 | { | |
613 | int ret; | |
614 | ||
615 | ret = vidioc_try_fmt_vid_cap(file, priv, f); | |
616 | if (ret) | |
617 | return ret; | |
618 | ||
d3dd59c2 | 619 | return vidioc_s_fmt(file2ctx(file), f); |
96d8eab5 PO |
620 | } |
621 | ||
622 | static int vidioc_s_fmt_vid_out(struct file *file, void *priv, | |
623 | struct v4l2_format *f) | |
624 | { | |
625 | int ret; | |
626 | ||
627 | ret = vidioc_try_fmt_vid_out(file, priv, f); | |
628 | if (ret) | |
629 | return ret; | |
630 | ||
d3dd59c2 | 631 | return vidioc_s_fmt(file2ctx(file), f); |
96d8eab5 PO |
632 | } |
633 | ||
634 | static int vidioc_reqbufs(struct file *file, void *priv, | |
635 | struct v4l2_requestbuffers *reqbufs) | |
636 | { | |
d3dd59c2 | 637 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
638 | |
639 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); | |
640 | } | |
641 | ||
642 | static int vidioc_querybuf(struct file *file, void *priv, | |
643 | struct v4l2_buffer *buf) | |
644 | { | |
d3dd59c2 | 645 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
646 | |
647 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); | |
648 | } | |
649 | ||
650 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
651 | { | |
d3dd59c2 | 652 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
653 | |
654 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); | |
655 | } | |
656 | ||
657 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
658 | { | |
d3dd59c2 | 659 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
660 | |
661 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); | |
662 | } | |
663 | ||
664 | static int vidioc_streamon(struct file *file, void *priv, | |
665 | enum v4l2_buf_type type) | |
666 | { | |
d3dd59c2 | 667 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
668 | |
669 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); | |
670 | } | |
671 | ||
672 | static int vidioc_streamoff(struct file *file, void *priv, | |
673 | enum v4l2_buf_type type) | |
674 | { | |
d3dd59c2 | 675 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
676 | |
677 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); | |
678 | } | |
679 | ||
d3dd59c2 | 680 | static int m2mtest_s_ctrl(struct v4l2_ctrl *ctrl) |
96d8eab5 | 681 | { |
d3dd59c2 HV |
682 | struct m2mtest_ctx *ctx = |
683 | container_of(ctrl->handler, struct m2mtest_ctx, hdl); | |
96d8eab5 PO |
684 | |
685 | switch (ctrl->id) { | |
80072871 | 686 | case V4L2_CID_HFLIP: |
d3dd59c2 | 687 | if (ctrl->val) |
80072871 TM |
688 | ctx->mode |= MEM2MEM_HFLIP; |
689 | else | |
690 | ctx->mode &= ~MEM2MEM_HFLIP; | |
691 | break; | |
692 | ||
693 | case V4L2_CID_VFLIP: | |
d3dd59c2 | 694 | if (ctrl->val) |
80072871 TM |
695 | ctx->mode |= MEM2MEM_VFLIP; |
696 | else | |
697 | ctx->mode &= ~MEM2MEM_VFLIP; | |
698 | break; | |
699 | ||
96d8eab5 | 700 | case V4L2_CID_TRANS_TIME_MSEC: |
d3dd59c2 | 701 | ctx->transtime = ctrl->val; |
96d8eab5 PO |
702 | break; |
703 | ||
704 | case V4L2_CID_TRANS_NUM_BUFS: | |
d3dd59c2 | 705 | ctx->translen = ctrl->val; |
96d8eab5 PO |
706 | break; |
707 | ||
708 | default: | |
709 | v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n"); | |
710 | return -EINVAL; | |
711 | } | |
712 | ||
713 | return 0; | |
714 | } | |
715 | ||
d3dd59c2 HV |
716 | static const struct v4l2_ctrl_ops m2mtest_ctrl_ops = { |
717 | .s_ctrl = m2mtest_s_ctrl, | |
718 | }; | |
719 | ||
96d8eab5 PO |
720 | |
721 | static const struct v4l2_ioctl_ops m2mtest_ioctl_ops = { | |
722 | .vidioc_querycap = vidioc_querycap, | |
723 | ||
724 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
725 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
726 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
727 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
728 | ||
729 | .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, | |
730 | .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, | |
731 | .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, | |
732 | .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, | |
733 | ||
734 | .vidioc_reqbufs = vidioc_reqbufs, | |
735 | .vidioc_querybuf = vidioc_querybuf, | |
736 | ||
737 | .vidioc_qbuf = vidioc_qbuf, | |
738 | .vidioc_dqbuf = vidioc_dqbuf, | |
739 | ||
740 | .vidioc_streamon = vidioc_streamon, | |
741 | .vidioc_streamoff = vidioc_streamoff, | |
97a3c902 HV |
742 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
743 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
96d8eab5 PO |
744 | }; |
745 | ||
746 | ||
747 | /* | |
748 | * Queue operations | |
749 | */ | |
750 | ||
fc714e70 GL |
751 | static int m2mtest_queue_setup(struct vb2_queue *vq, |
752 | const struct v4l2_format *fmt, | |
753 | unsigned int *nbuffers, unsigned int *nplanes, | |
754 | unsigned int sizes[], void *alloc_ctxs[]) | |
96d8eab5 | 755 | { |
d80ee38c | 756 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vq); |
96d8eab5 | 757 | struct m2mtest_q_data *q_data; |
d80ee38c | 758 | unsigned int size, count = *nbuffers; |
96d8eab5 | 759 | |
9f4161a6 | 760 | q_data = get_q_data(ctx, vq->type); |
96d8eab5 | 761 | |
d80ee38c MS |
762 | size = q_data->width * q_data->height * q_data->fmt->depth >> 3; |
763 | ||
764 | while (size * count > MEM2MEM_VID_MEM_LIMIT) | |
765 | (count)--; | |
96d8eab5 | 766 | |
d80ee38c MS |
767 | *nplanes = 1; |
768 | *nbuffers = count; | |
769 | sizes[0] = size; | |
96d8eab5 | 770 | |
d80ee38c MS |
771 | /* |
772 | * videobuf2-vmalloc allocator is context-less so no need to set | |
773 | * alloc_ctxs array. | |
774 | */ | |
96d8eab5 | 775 | |
d80ee38c | 776 | dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); |
96d8eab5 PO |
777 | |
778 | return 0; | |
779 | } | |
780 | ||
d80ee38c | 781 | static int m2mtest_buf_prepare(struct vb2_buffer *vb) |
96d8eab5 | 782 | { |
d80ee38c | 783 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
96d8eab5 | 784 | struct m2mtest_q_data *q_data; |
96d8eab5 | 785 | |
d80ee38c | 786 | dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); |
96d8eab5 | 787 | |
9f4161a6 | 788 | q_data = get_q_data(ctx, vb->vb2_queue->type); |
96d8eab5 | 789 | |
d80ee38c MS |
790 | if (vb2_plane_size(vb, 0) < q_data->sizeimage) { |
791 | dprintk(ctx->dev, "%s data will not fit into plane (%lu < %lu)\n", | |
792 | __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); | |
96d8eab5 PO |
793 | return -EINVAL; |
794 | } | |
795 | ||
d80ee38c | 796 | vb2_set_plane_payload(vb, 0, q_data->sizeimage); |
96d8eab5 PO |
797 | |
798 | return 0; | |
96d8eab5 PO |
799 | } |
800 | ||
d80ee38c | 801 | static void m2mtest_buf_queue(struct vb2_buffer *vb) |
96d8eab5 | 802 | { |
d80ee38c MS |
803 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
804 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); | |
96d8eab5 PO |
805 | } |
806 | ||
0f910bf0 MO |
807 | static void m2mtest_wait_prepare(struct vb2_queue *q) |
808 | { | |
809 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
810 | m2mtest_unlock(ctx); | |
811 | } | |
812 | ||
813 | static void m2mtest_wait_finish(struct vb2_queue *q) | |
814 | { | |
815 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
816 | m2mtest_lock(ctx); | |
817 | } | |
818 | ||
d80ee38c MS |
819 | static struct vb2_ops m2mtest_qops = { |
820 | .queue_setup = m2mtest_queue_setup, | |
821 | .buf_prepare = m2mtest_buf_prepare, | |
822 | .buf_queue = m2mtest_buf_queue, | |
0f910bf0 MO |
823 | .wait_prepare = m2mtest_wait_prepare, |
824 | .wait_finish = m2mtest_wait_finish, | |
96d8eab5 PO |
825 | }; |
826 | ||
d80ee38c | 827 | static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) |
96d8eab5 PO |
828 | { |
829 | struct m2mtest_ctx *ctx = priv; | |
d80ee38c | 830 | int ret; |
96d8eab5 | 831 | |
d80ee38c MS |
832 | memset(src_vq, 0, sizeof(*src_vq)); |
833 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
834 | src_vq->io_modes = VB2_MMAP; | |
835 | src_vq->drv_priv = ctx; | |
836 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
837 | src_vq->ops = &m2mtest_qops; | |
838 | src_vq->mem_ops = &vb2_vmalloc_memops; | |
839 | ||
840 | ret = vb2_queue_init(src_vq); | |
841 | if (ret) | |
842 | return ret; | |
96d8eab5 | 843 | |
d80ee38c MS |
844 | memset(dst_vq, 0, sizeof(*dst_vq)); |
845 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
846 | dst_vq->io_modes = VB2_MMAP; | |
847 | dst_vq->drv_priv = ctx; | |
848 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
849 | dst_vq->ops = &m2mtest_qops; | |
850 | dst_vq->mem_ops = &vb2_vmalloc_memops; | |
851 | ||
852 | return vb2_queue_init(dst_vq); | |
853 | } | |
96d8eab5 | 854 | |
d3dd59c2 HV |
855 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_time_msec = { |
856 | .ops = &m2mtest_ctrl_ops, | |
857 | .id = V4L2_CID_TRANS_TIME_MSEC, | |
858 | .name = "Transaction Time (msec)", | |
859 | .type = V4L2_CTRL_TYPE_INTEGER, | |
860 | .def = 1001, | |
861 | .min = 1, | |
862 | .max = 10001, | |
863 | .step = 100, | |
864 | }; | |
865 | ||
866 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_num_bufs = { | |
867 | .ops = &m2mtest_ctrl_ops, | |
868 | .id = V4L2_CID_TRANS_NUM_BUFS, | |
869 | .name = "Buffers Per Transaction", | |
870 | .type = V4L2_CTRL_TYPE_INTEGER, | |
871 | .def = 1, | |
872 | .min = 1, | |
873 | .max = MEM2MEM_DEF_NUM_BUFS, | |
874 | .step = 1, | |
875 | }; | |
876 | ||
96d8eab5 PO |
877 | /* |
878 | * File operations | |
879 | */ | |
880 | static int m2mtest_open(struct file *file) | |
881 | { | |
882 | struct m2mtest_dev *dev = video_drvdata(file); | |
883 | struct m2mtest_ctx *ctx = NULL; | |
d3dd59c2 | 884 | struct v4l2_ctrl_handler *hdl; |
96d8eab5 PO |
885 | |
886 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); | |
887 | if (!ctx) | |
888 | return -ENOMEM; | |
889 | ||
d3dd59c2 HV |
890 | v4l2_fh_init(&ctx->fh, video_devdata(file)); |
891 | file->private_data = &ctx->fh; | |
96d8eab5 | 892 | ctx->dev = dev; |
d3dd59c2 HV |
893 | hdl = &ctx->hdl; |
894 | v4l2_ctrl_handler_init(hdl, 4); | |
895 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); | |
896 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); | |
897 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_time_msec, NULL); | |
898 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_num_bufs, NULL); | |
899 | if (hdl->error) { | |
900 | int err = hdl->error; | |
901 | ||
902 | v4l2_ctrl_handler_free(hdl); | |
903 | return err; | |
904 | } | |
905 | ctx->fh.ctrl_handler = hdl; | |
906 | v4l2_ctrl_handler_setup(hdl); | |
96d8eab5 | 907 | |
9f4161a6 TM |
908 | ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0]; |
909 | ctx->q_data[V4L2_M2M_DST].fmt = &formats[0]; | |
910 | ||
d80ee38c MS |
911 | ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); |
912 | ||
96d8eab5 | 913 | if (IS_ERR(ctx->m2m_ctx)) { |
16ee9bb1 DC |
914 | int ret = PTR_ERR(ctx->m2m_ctx); |
915 | ||
d3dd59c2 | 916 | v4l2_ctrl_handler_free(hdl); |
96d8eab5 | 917 | kfree(ctx); |
16ee9bb1 | 918 | return ret; |
96d8eab5 PO |
919 | } |
920 | ||
d3dd59c2 | 921 | v4l2_fh_add(&ctx->fh); |
96d8eab5 PO |
922 | atomic_inc(&dev->num_inst); |
923 | ||
924 | dprintk(dev, "Created instance %p, m2m_ctx: %p\n", ctx, ctx->m2m_ctx); | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
929 | static int m2mtest_release(struct file *file) | |
930 | { | |
931 | struct m2mtest_dev *dev = video_drvdata(file); | |
d3dd59c2 | 932 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
933 | |
934 | dprintk(dev, "Releasing instance %p\n", ctx); | |
935 | ||
d3dd59c2 HV |
936 | v4l2_fh_del(&ctx->fh); |
937 | v4l2_fh_exit(&ctx->fh); | |
938 | v4l2_ctrl_handler_free(&ctx->hdl); | |
96d8eab5 PO |
939 | v4l2_m2m_ctx_release(ctx->m2m_ctx); |
940 | kfree(ctx); | |
941 | ||
942 | atomic_dec(&dev->num_inst); | |
943 | ||
944 | return 0; | |
945 | } | |
946 | ||
947 | static unsigned int m2mtest_poll(struct file *file, | |
948 | struct poll_table_struct *wait) | |
949 | { | |
d3dd59c2 | 950 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
951 | |
952 | return v4l2_m2m_poll(file, ctx->m2m_ctx, wait); | |
953 | } | |
954 | ||
955 | static int m2mtest_mmap(struct file *file, struct vm_area_struct *vma) | |
956 | { | |
d3dd59c2 | 957 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
958 | |
959 | return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); | |
960 | } | |
961 | ||
962 | static const struct v4l2_file_operations m2mtest_fops = { | |
963 | .owner = THIS_MODULE, | |
964 | .open = m2mtest_open, | |
965 | .release = m2mtest_release, | |
966 | .poll = m2mtest_poll, | |
07e80305 | 967 | .unlocked_ioctl = video_ioctl2, |
96d8eab5 PO |
968 | .mmap = m2mtest_mmap, |
969 | }; | |
970 | ||
971 | static struct video_device m2mtest_videodev = { | |
972 | .name = MEM2MEM_NAME, | |
973 | .fops = &m2mtest_fops, | |
974 | .ioctl_ops = &m2mtest_ioctl_ops, | |
975 | .minor = -1, | |
976 | .release = video_device_release, | |
977 | }; | |
978 | ||
979 | static struct v4l2_m2m_ops m2m_ops = { | |
980 | .device_run = device_run, | |
981 | .job_ready = job_ready, | |
982 | .job_abort = job_abort, | |
d80ee38c MS |
983 | .lock = m2mtest_lock, |
984 | .unlock = m2mtest_unlock, | |
96d8eab5 PO |
985 | }; |
986 | ||
987 | static int m2mtest_probe(struct platform_device *pdev) | |
988 | { | |
989 | struct m2mtest_dev *dev; | |
990 | struct video_device *vfd; | |
991 | int ret; | |
992 | ||
993 | dev = kzalloc(sizeof *dev, GFP_KERNEL); | |
994 | if (!dev) | |
995 | return -ENOMEM; | |
996 | ||
997 | spin_lock_init(&dev->irqlock); | |
998 | ||
999 | ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); | |
1000 | if (ret) | |
1001 | goto free_dev; | |
1002 | ||
1003 | atomic_set(&dev->num_inst, 0); | |
1004 | mutex_init(&dev->dev_mutex); | |
1005 | ||
1006 | vfd = video_device_alloc(); | |
1007 | if (!vfd) { | |
1008 | v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); | |
1009 | ret = -ENOMEM; | |
1010 | goto unreg_dev; | |
1011 | } | |
1012 | ||
1013 | *vfd = m2mtest_videodev; | |
5126f259 HV |
1014 | /* Locking in file operations other than ioctl should be done |
1015 | by the driver, not the V4L2 core. | |
1016 | This driver needs auditing so that this flag can be removed. */ | |
1017 | set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags); | |
07e80305 | 1018 | vfd->lock = &dev->dev_mutex; |
96d8eab5 PO |
1019 | |
1020 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); | |
1021 | if (ret) { | |
1022 | v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); | |
1023 | goto rel_vdev; | |
1024 | } | |
1025 | ||
1026 | video_set_drvdata(vfd, dev); | |
1027 | snprintf(vfd->name, sizeof(vfd->name), "%s", m2mtest_videodev.name); | |
1028 | dev->vfd = vfd; | |
1029 | v4l2_info(&dev->v4l2_dev, MEM2MEM_TEST_MODULE_NAME | |
1030 | "Device registered as /dev/video%d\n", vfd->num); | |
1031 | ||
1032 | setup_timer(&dev->timer, device_isr, (long)dev); | |
1033 | platform_set_drvdata(pdev, dev); | |
1034 | ||
1035 | dev->m2m_dev = v4l2_m2m_init(&m2m_ops); | |
1036 | if (IS_ERR(dev->m2m_dev)) { | |
1037 | v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); | |
1038 | ret = PTR_ERR(dev->m2m_dev); | |
1039 | goto err_m2m; | |
1040 | } | |
1041 | ||
1042 | return 0; | |
1043 | ||
d80ee38c | 1044 | v4l2_m2m_release(dev->m2m_dev); |
96d8eab5 PO |
1045 | err_m2m: |
1046 | video_unregister_device(dev->vfd); | |
1047 | rel_vdev: | |
1048 | video_device_release(vfd); | |
1049 | unreg_dev: | |
1050 | v4l2_device_unregister(&dev->v4l2_dev); | |
1051 | free_dev: | |
1052 | kfree(dev); | |
1053 | ||
1054 | return ret; | |
1055 | } | |
1056 | ||
1057 | static int m2mtest_remove(struct platform_device *pdev) | |
1058 | { | |
1059 | struct m2mtest_dev *dev = | |
1060 | (struct m2mtest_dev *)platform_get_drvdata(pdev); | |
1061 | ||
1062 | v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_TEST_MODULE_NAME); | |
1063 | v4l2_m2m_release(dev->m2m_dev); | |
1064 | del_timer_sync(&dev->timer); | |
1065 | video_unregister_device(dev->vfd); | |
1066 | v4l2_device_unregister(&dev->v4l2_dev); | |
1067 | kfree(dev); | |
1068 | ||
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | static struct platform_driver m2mtest_pdrv = { | |
1073 | .probe = m2mtest_probe, | |
1074 | .remove = m2mtest_remove, | |
1075 | .driver = { | |
1076 | .name = MEM2MEM_NAME, | |
1077 | .owner = THIS_MODULE, | |
1078 | }, | |
1079 | }; | |
1080 | ||
1081 | static void __exit m2mtest_exit(void) | |
1082 | { | |
1083 | platform_driver_unregister(&m2mtest_pdrv); | |
1084 | platform_device_unregister(&m2mtest_pdev); | |
1085 | } | |
1086 | ||
1087 | static int __init m2mtest_init(void) | |
1088 | { | |
1089 | int ret; | |
1090 | ||
1091 | ret = platform_device_register(&m2mtest_pdev); | |
1092 | if (ret) | |
1093 | return ret; | |
1094 | ||
1095 | ret = platform_driver_register(&m2mtest_pdrv); | |
1096 | if (ret) | |
1097 | platform_device_unregister(&m2mtest_pdev); | |
1098 | ||
1099 | return 0; | |
1100 | } | |
1101 | ||
1102 | module_init(m2mtest_init); | |
1103 | module_exit(m2mtest_exit); | |
1104 |