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 | ||
9f4161a6 TM |
180 | /* Source and destination queue data */ |
181 | struct m2mtest_q_data q_data[2]; | |
96d8eab5 PO |
182 | }; |
183 | ||
d3dd59c2 HV |
184 | static inline struct m2mtest_ctx *file2ctx(struct file *file) |
185 | { | |
186 | return container_of(file->private_data, struct m2mtest_ctx, fh); | |
187 | } | |
188 | ||
9f4161a6 TM |
189 | static struct m2mtest_q_data *get_q_data(struct m2mtest_ctx *ctx, |
190 | enum v4l2_buf_type type) | |
191 | { | |
192 | switch (type) { | |
193 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
194 | return &ctx->q_data[V4L2_M2M_SRC]; | |
195 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
196 | return &ctx->q_data[V4L2_M2M_DST]; | |
197 | default: | |
198 | BUG(); | |
199 | } | |
200 | return NULL; | |
201 | } | |
202 | ||
203 | ||
96d8eab5 | 204 | static int device_process(struct m2mtest_ctx *ctx, |
d80ee38c MS |
205 | struct vb2_buffer *in_vb, |
206 | struct vb2_buffer *out_vb) | |
96d8eab5 PO |
207 | { |
208 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 209 | struct m2mtest_q_data *q_data; |
96d8eab5 PO |
210 | u8 *p_in, *p_out; |
211 | int x, y, t, w; | |
212 | int tile_w, bytes_left; | |
d80ee38c | 213 | int width, height, bytesperline; |
96d8eab5 | 214 | |
9f4161a6 | 215 | q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); |
d80ee38c MS |
216 | |
217 | width = q_data->width; | |
218 | height = q_data->height; | |
219 | bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
220 | ||
221 | p_in = vb2_plane_vaddr(in_vb, 0); | |
222 | p_out = vb2_plane_vaddr(out_vb, 0); | |
96d8eab5 PO |
223 | if (!p_in || !p_out) { |
224 | v4l2_err(&dev->v4l2_dev, | |
225 | "Acquiring kernel pointers to buffers failed\n"); | |
226 | return -EFAULT; | |
227 | } | |
228 | ||
d80ee38c | 229 | if (vb2_plane_size(in_vb, 0) > vb2_plane_size(out_vb, 0)) { |
96d8eab5 PO |
230 | v4l2_err(&dev->v4l2_dev, "Output buffer is too small\n"); |
231 | return -EINVAL; | |
232 | } | |
233 | ||
d80ee38c | 234 | tile_w = (width * (q_data[V4L2_M2M_DST].fmt->depth >> 3)) |
96d8eab5 | 235 | / MEM2MEM_NUM_TILES; |
d80ee38c | 236 | bytes_left = bytesperline - tile_w * MEM2MEM_NUM_TILES; |
96d8eab5 PO |
237 | w = 0; |
238 | ||
d95d7c64 HV |
239 | memcpy(&out_vb->v4l2_buf.timestamp, |
240 | &in_vb->v4l2_buf.timestamp, | |
241 | sizeof(struct timeval)); | |
242 | ||
80072871 TM |
243 | switch (ctx->mode) { |
244 | case MEM2MEM_HFLIP | MEM2MEM_VFLIP: | |
245 | p_out += bytesperline * height - bytes_left; | |
246 | for (y = 0; y < height; ++y) { | |
247 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
248 | if (w & 0x1) { | |
249 | for (x = 0; x < tile_w; ++x) | |
250 | *--p_out = *p_in++ + | |
251 | MEM2MEM_COLOR_STEP; | |
252 | } else { | |
253 | for (x = 0; x < tile_w; ++x) | |
254 | *--p_out = *p_in++ - | |
255 | MEM2MEM_COLOR_STEP; | |
256 | } | |
257 | ++w; | |
96d8eab5 | 258 | } |
80072871 TM |
259 | p_in += bytes_left; |
260 | p_out -= bytes_left; | |
261 | } | |
262 | break; | |
263 | ||
264 | case MEM2MEM_HFLIP: | |
265 | for (y = 0; y < height; ++y) { | |
266 | p_out += MEM2MEM_NUM_TILES * tile_w; | |
267 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
268 | if (w & 0x01) { | |
269 | for (x = 0; x < tile_w; ++x) | |
270 | *--p_out = *p_in++ + | |
271 | MEM2MEM_COLOR_STEP; | |
272 | } else { | |
273 | for (x = 0; x < tile_w; ++x) | |
274 | *--p_out = *p_in++ - | |
275 | MEM2MEM_COLOR_STEP; | |
276 | } | |
277 | ++w; | |
278 | } | |
279 | p_in += bytes_left; | |
280 | p_out += bytesperline; | |
281 | } | |
282 | break; | |
283 | ||
284 | case MEM2MEM_VFLIP: | |
285 | p_out += bytesperline * (height - 1); | |
286 | for (y = 0; y < height; ++y) { | |
287 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
288 | if (w & 0x1) { | |
289 | for (x = 0; x < tile_w; ++x) | |
290 | *p_out++ = *p_in++ + | |
291 | MEM2MEM_COLOR_STEP; | |
292 | } else { | |
293 | for (x = 0; x < tile_w; ++x) | |
294 | *p_out++ = *p_in++ - | |
295 | MEM2MEM_COLOR_STEP; | |
296 | } | |
297 | ++w; | |
298 | } | |
299 | p_in += bytes_left; | |
300 | p_out += bytes_left - 2 * bytesperline; | |
301 | } | |
302 | break; | |
303 | ||
304 | default: | |
305 | for (y = 0; y < height; ++y) { | |
306 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
307 | if (w & 0x1) { | |
308 | for (x = 0; x < tile_w; ++x) | |
309 | *p_out++ = *p_in++ + | |
310 | MEM2MEM_COLOR_STEP; | |
311 | } else { | |
312 | for (x = 0; x < tile_w; ++x) | |
313 | *p_out++ = *p_in++ - | |
314 | MEM2MEM_COLOR_STEP; | |
315 | } | |
316 | ++w; | |
317 | } | |
318 | p_in += bytes_left; | |
319 | p_out += bytes_left; | |
96d8eab5 | 320 | } |
96d8eab5 PO |
321 | } |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
326 | static void schedule_irq(struct m2mtest_dev *dev, int msec_timeout) | |
327 | { | |
328 | dprintk(dev, "Scheduling a simulated irq\n"); | |
329 | mod_timer(&dev->timer, jiffies + msecs_to_jiffies(msec_timeout)); | |
330 | } | |
331 | ||
332 | /* | |
333 | * mem2mem callbacks | |
334 | */ | |
335 | ||
336 | /** | |
337 | * job_ready() - check whether an instance is ready to be scheduled to run | |
338 | */ | |
339 | static int job_ready(void *priv) | |
340 | { | |
341 | struct m2mtest_ctx *ctx = priv; | |
342 | ||
20702ebc SN |
343 | if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) < ctx->translen |
344 | || v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx) < ctx->translen) { | |
96d8eab5 PO |
345 | dprintk(ctx->dev, "Not enough buffers available\n"); |
346 | return 0; | |
347 | } | |
348 | ||
349 | return 1; | |
350 | } | |
351 | ||
352 | static void job_abort(void *priv) | |
353 | { | |
354 | struct m2mtest_ctx *ctx = priv; | |
355 | ||
356 | /* Will cancel the transaction in the next interrupt handler */ | |
357 | ctx->aborting = 1; | |
358 | } | |
359 | ||
360 | /* device_run() - prepares and starts the device | |
361 | * | |
362 | * This simulates all the immediate preparations required before starting | |
363 | * a device. This will be called by the framework when it decides to schedule | |
364 | * a particular instance. | |
365 | */ | |
366 | static void device_run(void *priv) | |
367 | { | |
368 | struct m2mtest_ctx *ctx = priv; | |
369 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 370 | struct vb2_buffer *src_buf, *dst_buf; |
96d8eab5 | 371 | |
20702ebc SN |
372 | src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); |
373 | dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); | |
96d8eab5 PO |
374 | |
375 | device_process(ctx, src_buf, dst_buf); | |
376 | ||
377 | /* Run a timer, which simulates a hardware irq */ | |
378 | schedule_irq(dev, ctx->transtime); | |
379 | } | |
380 | ||
96d8eab5 PO |
381 | static void device_isr(unsigned long priv) |
382 | { | |
383 | struct m2mtest_dev *m2mtest_dev = (struct m2mtest_dev *)priv; | |
384 | struct m2mtest_ctx *curr_ctx; | |
d80ee38c | 385 | struct vb2_buffer *src_vb, *dst_vb; |
96d8eab5 PO |
386 | unsigned long flags; |
387 | ||
388 | curr_ctx = v4l2_m2m_get_curr_priv(m2mtest_dev->m2m_dev); | |
389 | ||
390 | if (NULL == curr_ctx) { | |
26fdcf09 | 391 | pr_err("Instance released before the end of transaction\n"); |
96d8eab5 PO |
392 | return; |
393 | } | |
394 | ||
20702ebc SN |
395 | src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx); |
396 | dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx); | |
d80ee38c | 397 | |
96d8eab5 PO |
398 | curr_ctx->num_processed++; |
399 | ||
d80ee38c MS |
400 | spin_lock_irqsave(&m2mtest_dev->irqlock, flags); |
401 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); | |
402 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); | |
403 | spin_unlock_irqrestore(&m2mtest_dev->irqlock, flags); | |
404 | ||
96d8eab5 PO |
405 | if (curr_ctx->num_processed == curr_ctx->translen |
406 | || curr_ctx->aborting) { | |
407 | dprintk(curr_ctx->dev, "Finishing transaction\n"); | |
408 | curr_ctx->num_processed = 0; | |
20702ebc | 409 | v4l2_m2m_job_finish(m2mtest_dev->m2m_dev, curr_ctx->fh.m2m_ctx); |
96d8eab5 | 410 | } else { |
96d8eab5 PO |
411 | device_run(curr_ctx); |
412 | } | |
413 | } | |
414 | ||
96d8eab5 PO |
415 | /* |
416 | * video ioctls | |
417 | */ | |
418 | static int vidioc_querycap(struct file *file, void *priv, | |
419 | struct v4l2_capability *cap) | |
420 | { | |
421 | strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1); | |
422 | strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1); | |
72c2af6e HV |
423 | snprintf(cap->bus_info, sizeof(cap->bus_info), |
424 | "platform:%s", MEM2MEM_NAME); | |
00424c7e | 425 | cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; |
b0d14996 | 426 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
96d8eab5 PO |
427 | return 0; |
428 | } | |
429 | ||
430 | static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) | |
431 | { | |
432 | int i, num; | |
433 | struct m2mtest_fmt *fmt; | |
434 | ||
435 | num = 0; | |
436 | ||
437 | for (i = 0; i < NUM_FORMATS; ++i) { | |
438 | if (formats[i].types & type) { | |
439 | /* index-th format of type type found ? */ | |
440 | if (num == f->index) | |
441 | break; | |
442 | /* Correct type but haven't reached our index yet, | |
443 | * just increment per-type index */ | |
444 | ++num; | |
445 | } | |
446 | } | |
447 | ||
448 | if (i < NUM_FORMATS) { | |
449 | /* Format found */ | |
450 | fmt = &formats[i]; | |
451 | strncpy(f->description, fmt->name, sizeof(f->description) - 1); | |
452 | f->pixelformat = fmt->fourcc; | |
453 | return 0; | |
454 | } | |
455 | ||
456 | /* Format not found */ | |
457 | return -EINVAL; | |
458 | } | |
459 | ||
460 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
461 | struct v4l2_fmtdesc *f) | |
462 | { | |
463 | return enum_fmt(f, MEM2MEM_CAPTURE); | |
464 | } | |
465 | ||
466 | static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, | |
467 | struct v4l2_fmtdesc *f) | |
468 | { | |
469 | return enum_fmt(f, MEM2MEM_OUTPUT); | |
470 | } | |
471 | ||
472 | static int vidioc_g_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
473 | { | |
d80ee38c | 474 | struct vb2_queue *vq; |
96d8eab5 PO |
475 | struct m2mtest_q_data *q_data; |
476 | ||
20702ebc | 477 | vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); |
96d8eab5 PO |
478 | if (!vq) |
479 | return -EINVAL; | |
480 | ||
9f4161a6 | 481 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
482 | |
483 | f->fmt.pix.width = q_data->width; | |
484 | f->fmt.pix.height = q_data->height; | |
d80ee38c | 485 | f->fmt.pix.field = V4L2_FIELD_NONE; |
96d8eab5 PO |
486 | f->fmt.pix.pixelformat = q_data->fmt->fourcc; |
487 | f->fmt.pix.bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
488 | f->fmt.pix.sizeimage = q_data->sizeimage; | |
47556ffa | 489 | f->fmt.pix.colorspace = ctx->colorspace; |
96d8eab5 PO |
490 | |
491 | return 0; | |
492 | } | |
493 | ||
494 | static int vidioc_g_fmt_vid_out(struct file *file, void *priv, | |
495 | struct v4l2_format *f) | |
496 | { | |
d3dd59c2 | 497 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
498 | } |
499 | ||
500 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
501 | struct v4l2_format *f) | |
502 | { | |
d3dd59c2 | 503 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
504 | } |
505 | ||
506 | static int vidioc_try_fmt(struct v4l2_format *f, struct m2mtest_fmt *fmt) | |
507 | { | |
508 | enum v4l2_field field; | |
509 | ||
510 | field = f->fmt.pix.field; | |
511 | ||
512 | if (field == V4L2_FIELD_ANY) | |
513 | field = V4L2_FIELD_NONE; | |
514 | else if (V4L2_FIELD_NONE != field) | |
515 | return -EINVAL; | |
516 | ||
517 | /* V4L2 specification suggests the driver corrects the format struct | |
518 | * if any of the dimensions is unsupported */ | |
519 | f->fmt.pix.field = field; | |
520 | ||
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; | |
534 | ||
535 | return 0; | |
536 | } | |
537 | ||
538 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
539 | struct v4l2_format *f) | |
540 | { | |
541 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 542 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
543 | |
544 | fmt = find_format(f); | |
545 | if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) { | |
546 | v4l2_err(&ctx->dev->v4l2_dev, | |
547 | "Fourcc format (0x%08x) invalid.\n", | |
548 | f->fmt.pix.pixelformat); | |
549 | return -EINVAL; | |
550 | } | |
47556ffa | 551 | f->fmt.pix.colorspace = ctx->colorspace; |
96d8eab5 PO |
552 | |
553 | return vidioc_try_fmt(f, fmt); | |
554 | } | |
555 | ||
556 | static int vidioc_try_fmt_vid_out(struct file *file, void *priv, | |
557 | struct v4l2_format *f) | |
558 | { | |
559 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 560 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
561 | |
562 | fmt = find_format(f); | |
563 | if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) { | |
564 | v4l2_err(&ctx->dev->v4l2_dev, | |
565 | "Fourcc format (0x%08x) invalid.\n", | |
566 | f->fmt.pix.pixelformat); | |
567 | return -EINVAL; | |
568 | } | |
47556ffa HV |
569 | if (!f->fmt.pix.colorspace) |
570 | f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; | |
96d8eab5 PO |
571 | |
572 | return vidioc_try_fmt(f, fmt); | |
573 | } | |
574 | ||
575 | static int vidioc_s_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
576 | { | |
577 | struct m2mtest_q_data *q_data; | |
d80ee38c | 578 | struct vb2_queue *vq; |
96d8eab5 | 579 | |
20702ebc | 580 | vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); |
96d8eab5 PO |
581 | if (!vq) |
582 | return -EINVAL; | |
583 | ||
9f4161a6 | 584 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
585 | if (!q_data) |
586 | return -EINVAL; | |
587 | ||
d80ee38c | 588 | if (vb2_is_busy(vq)) { |
96d8eab5 | 589 | v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); |
07e80305 | 590 | return -EBUSY; |
96d8eab5 PO |
591 | } |
592 | ||
593 | q_data->fmt = find_format(f); | |
594 | q_data->width = f->fmt.pix.width; | |
595 | q_data->height = f->fmt.pix.height; | |
596 | q_data->sizeimage = q_data->width * q_data->height | |
597 | * q_data->fmt->depth >> 3; | |
96d8eab5 PO |
598 | |
599 | dprintk(ctx->dev, | |
600 | "Setting format for type %d, wxh: %dx%d, fmt: %d\n", | |
601 | f->type, q_data->width, q_data->height, q_data->fmt->fourcc); | |
602 | ||
07e80305 | 603 | return 0; |
96d8eab5 PO |
604 | } |
605 | ||
606 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
607 | struct v4l2_format *f) | |
608 | { | |
609 | int ret; | |
610 | ||
611 | ret = vidioc_try_fmt_vid_cap(file, priv, f); | |
612 | if (ret) | |
613 | return ret; | |
614 | ||
d3dd59c2 | 615 | return vidioc_s_fmt(file2ctx(file), f); |
96d8eab5 PO |
616 | } |
617 | ||
618 | static int vidioc_s_fmt_vid_out(struct file *file, void *priv, | |
619 | struct v4l2_format *f) | |
620 | { | |
47556ffa | 621 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
622 | int ret; |
623 | ||
624 | ret = vidioc_try_fmt_vid_out(file, priv, f); | |
625 | if (ret) | |
626 | return ret; | |
627 | ||
47556ffa HV |
628 | ret = vidioc_s_fmt(file2ctx(file), f); |
629 | if (!ret) | |
630 | ctx->colorspace = f->fmt.pix.colorspace; | |
631 | return ret; | |
96d8eab5 PO |
632 | } |
633 | ||
d3dd59c2 | 634 | static int m2mtest_s_ctrl(struct v4l2_ctrl *ctrl) |
96d8eab5 | 635 | { |
d3dd59c2 HV |
636 | struct m2mtest_ctx *ctx = |
637 | container_of(ctrl->handler, struct m2mtest_ctx, hdl); | |
96d8eab5 PO |
638 | |
639 | switch (ctrl->id) { | |
80072871 | 640 | case V4L2_CID_HFLIP: |
d3dd59c2 | 641 | if (ctrl->val) |
80072871 TM |
642 | ctx->mode |= MEM2MEM_HFLIP; |
643 | else | |
644 | ctx->mode &= ~MEM2MEM_HFLIP; | |
645 | break; | |
646 | ||
647 | case V4L2_CID_VFLIP: | |
d3dd59c2 | 648 | if (ctrl->val) |
80072871 TM |
649 | ctx->mode |= MEM2MEM_VFLIP; |
650 | else | |
651 | ctx->mode &= ~MEM2MEM_VFLIP; | |
652 | break; | |
653 | ||
96d8eab5 | 654 | case V4L2_CID_TRANS_TIME_MSEC: |
d3dd59c2 | 655 | ctx->transtime = ctrl->val; |
96d8eab5 PO |
656 | break; |
657 | ||
658 | case V4L2_CID_TRANS_NUM_BUFS: | |
d3dd59c2 | 659 | ctx->translen = ctrl->val; |
96d8eab5 PO |
660 | break; |
661 | ||
662 | default: | |
663 | v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n"); | |
664 | return -EINVAL; | |
665 | } | |
666 | ||
667 | return 0; | |
668 | } | |
669 | ||
d3dd59c2 HV |
670 | static const struct v4l2_ctrl_ops m2mtest_ctrl_ops = { |
671 | .s_ctrl = m2mtest_s_ctrl, | |
672 | }; | |
673 | ||
96d8eab5 PO |
674 | |
675 | static const struct v4l2_ioctl_ops m2mtest_ioctl_ops = { | |
676 | .vidioc_querycap = vidioc_querycap, | |
677 | ||
678 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
679 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
680 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
681 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
682 | ||
683 | .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, | |
684 | .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, | |
685 | .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, | |
686 | .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, | |
687 | ||
20702ebc SN |
688 | .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, |
689 | .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, | |
690 | .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, | |
691 | .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, | |
96d8eab5 | 692 | |
20702ebc SN |
693 | .vidioc_streamon = v4l2_m2m_ioctl_streamon, |
694 | .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, | |
96d8eab5 | 695 | |
97a3c902 HV |
696 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
697 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
96d8eab5 PO |
698 | }; |
699 | ||
700 | ||
701 | /* | |
702 | * Queue operations | |
703 | */ | |
704 | ||
fc714e70 GL |
705 | static int m2mtest_queue_setup(struct vb2_queue *vq, |
706 | const struct v4l2_format *fmt, | |
707 | unsigned int *nbuffers, unsigned int *nplanes, | |
708 | unsigned int sizes[], void *alloc_ctxs[]) | |
96d8eab5 | 709 | { |
d80ee38c | 710 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vq); |
96d8eab5 | 711 | struct m2mtest_q_data *q_data; |
d80ee38c | 712 | unsigned int size, count = *nbuffers; |
96d8eab5 | 713 | |
9f4161a6 | 714 | q_data = get_q_data(ctx, vq->type); |
96d8eab5 | 715 | |
d80ee38c MS |
716 | size = q_data->width * q_data->height * q_data->fmt->depth >> 3; |
717 | ||
718 | while (size * count > MEM2MEM_VID_MEM_LIMIT) | |
719 | (count)--; | |
96d8eab5 | 720 | |
d80ee38c MS |
721 | *nplanes = 1; |
722 | *nbuffers = count; | |
723 | sizes[0] = size; | |
96d8eab5 | 724 | |
d80ee38c MS |
725 | /* |
726 | * videobuf2-vmalloc allocator is context-less so no need to set | |
727 | * alloc_ctxs array. | |
728 | */ | |
96d8eab5 | 729 | |
d80ee38c | 730 | dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); |
96d8eab5 PO |
731 | |
732 | return 0; | |
733 | } | |
734 | ||
d80ee38c | 735 | static int m2mtest_buf_prepare(struct vb2_buffer *vb) |
96d8eab5 | 736 | { |
d80ee38c | 737 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
96d8eab5 | 738 | struct m2mtest_q_data *q_data; |
96d8eab5 | 739 | |
d80ee38c | 740 | dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); |
96d8eab5 | 741 | |
9f4161a6 | 742 | q_data = get_q_data(ctx, vb->vb2_queue->type); |
96d8eab5 | 743 | |
d80ee38c MS |
744 | if (vb2_plane_size(vb, 0) < q_data->sizeimage) { |
745 | dprintk(ctx->dev, "%s data will not fit into plane (%lu < %lu)\n", | |
746 | __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); | |
96d8eab5 PO |
747 | return -EINVAL; |
748 | } | |
749 | ||
d80ee38c | 750 | vb2_set_plane_payload(vb, 0, q_data->sizeimage); |
96d8eab5 PO |
751 | |
752 | return 0; | |
96d8eab5 PO |
753 | } |
754 | ||
d80ee38c | 755 | static void m2mtest_buf_queue(struct vb2_buffer *vb) |
96d8eab5 | 756 | { |
d80ee38c | 757 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
20702ebc | 758 | v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb); |
0f910bf0 MO |
759 | } |
760 | ||
d80ee38c MS |
761 | static struct vb2_ops m2mtest_qops = { |
762 | .queue_setup = m2mtest_queue_setup, | |
763 | .buf_prepare = m2mtest_buf_prepare, | |
764 | .buf_queue = m2mtest_buf_queue, | |
20702ebc SN |
765 | .wait_prepare = vb2_ops_wait_prepare, |
766 | .wait_finish = vb2_ops_wait_finish, | |
96d8eab5 PO |
767 | }; |
768 | ||
d80ee38c | 769 | static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) |
96d8eab5 PO |
770 | { |
771 | struct m2mtest_ctx *ctx = priv; | |
d80ee38c | 772 | int ret; |
96d8eab5 | 773 | |
d80ee38c | 774 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
b0a55033 | 775 | src_vq->io_modes = VB2_MMAP | VB2_DMABUF; |
d80ee38c MS |
776 | src_vq->drv_priv = ctx; |
777 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
778 | src_vq->ops = &m2mtest_qops; | |
779 | src_vq->mem_ops = &vb2_vmalloc_memops; | |
d95d7c64 | 780 | src_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
20702ebc | 781 | src_vq->lock = &ctx->dev->dev_mutex; |
d80ee38c MS |
782 | |
783 | ret = vb2_queue_init(src_vq); | |
784 | if (ret) | |
785 | return ret; | |
96d8eab5 | 786 | |
d80ee38c | 787 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
b0a55033 | 788 | dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; |
d80ee38c MS |
789 | dst_vq->drv_priv = ctx; |
790 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
791 | dst_vq->ops = &m2mtest_qops; | |
792 | dst_vq->mem_ops = &vb2_vmalloc_memops; | |
d95d7c64 | 793 | dst_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
20702ebc | 794 | dst_vq->lock = &ctx->dev->dev_mutex; |
d80ee38c MS |
795 | |
796 | return vb2_queue_init(dst_vq); | |
797 | } | |
96d8eab5 | 798 | |
d3dd59c2 HV |
799 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_time_msec = { |
800 | .ops = &m2mtest_ctrl_ops, | |
801 | .id = V4L2_CID_TRANS_TIME_MSEC, | |
802 | .name = "Transaction Time (msec)", | |
803 | .type = V4L2_CTRL_TYPE_INTEGER, | |
804 | .def = 1001, | |
805 | .min = 1, | |
806 | .max = 10001, | |
807 | .step = 100, | |
808 | }; | |
809 | ||
810 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_num_bufs = { | |
811 | .ops = &m2mtest_ctrl_ops, | |
812 | .id = V4L2_CID_TRANS_NUM_BUFS, | |
813 | .name = "Buffers Per Transaction", | |
814 | .type = V4L2_CTRL_TYPE_INTEGER, | |
815 | .def = 1, | |
816 | .min = 1, | |
817 | .max = MEM2MEM_DEF_NUM_BUFS, | |
818 | .step = 1, | |
819 | }; | |
820 | ||
96d8eab5 PO |
821 | /* |
822 | * File operations | |
823 | */ | |
824 | static int m2mtest_open(struct file *file) | |
825 | { | |
826 | struct m2mtest_dev *dev = video_drvdata(file); | |
827 | struct m2mtest_ctx *ctx = NULL; | |
d3dd59c2 | 828 | struct v4l2_ctrl_handler *hdl; |
f4694039 | 829 | int rc = 0; |
96d8eab5 | 830 | |
f4694039 HV |
831 | if (mutex_lock_interruptible(&dev->dev_mutex)) |
832 | return -ERESTARTSYS; | |
56ed221f | 833 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
f4694039 HV |
834 | if (!ctx) { |
835 | rc = -ENOMEM; | |
836 | goto open_unlock; | |
837 | } | |
96d8eab5 | 838 | |
d3dd59c2 HV |
839 | v4l2_fh_init(&ctx->fh, video_devdata(file)); |
840 | file->private_data = &ctx->fh; | |
96d8eab5 | 841 | ctx->dev = dev; |
d3dd59c2 HV |
842 | hdl = &ctx->hdl; |
843 | v4l2_ctrl_handler_init(hdl, 4); | |
844 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); | |
845 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); | |
846 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_time_msec, NULL); | |
847 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_num_bufs, NULL); | |
848 | if (hdl->error) { | |
a7bd7756 | 849 | rc = hdl->error; |
d3dd59c2 | 850 | v4l2_ctrl_handler_free(hdl); |
a7bd7756 | 851 | goto open_unlock; |
d3dd59c2 HV |
852 | } |
853 | ctx->fh.ctrl_handler = hdl; | |
854 | v4l2_ctrl_handler_setup(hdl); | |
96d8eab5 | 855 | |
9f4161a6 | 856 | ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0]; |
47556ffa HV |
857 | ctx->q_data[V4L2_M2M_SRC].width = 640; |
858 | ctx->q_data[V4L2_M2M_SRC].height = 480; | |
859 | ctx->q_data[V4L2_M2M_SRC].sizeimage = | |
860 | ctx->q_data[V4L2_M2M_SRC].width * | |
861 | ctx->q_data[V4L2_M2M_SRC].height * | |
862 | (ctx->q_data[V4L2_M2M_SRC].fmt->depth >> 3); | |
863 | ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC]; | |
864 | ctx->colorspace = V4L2_COLORSPACE_REC709; | |
9f4161a6 | 865 | |
20702ebc | 866 | ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); |
d80ee38c | 867 | |
20702ebc SN |
868 | if (IS_ERR(ctx->fh.m2m_ctx)) { |
869 | rc = PTR_ERR(ctx->fh.m2m_ctx); | |
16ee9bb1 | 870 | |
d3dd59c2 | 871 | v4l2_ctrl_handler_free(hdl); |
96d8eab5 | 872 | kfree(ctx); |
f4694039 | 873 | goto open_unlock; |
96d8eab5 PO |
874 | } |
875 | ||
d3dd59c2 | 876 | v4l2_fh_add(&ctx->fh); |
96d8eab5 PO |
877 | atomic_inc(&dev->num_inst); |
878 | ||
20702ebc SN |
879 | dprintk(dev, "Created instance: %p, m2m_ctx: %p\n", |
880 | ctx, ctx->fh.m2m_ctx); | |
96d8eab5 | 881 | |
f4694039 HV |
882 | open_unlock: |
883 | mutex_unlock(&dev->dev_mutex); | |
a7bd7756 | 884 | return rc; |
96d8eab5 PO |
885 | } |
886 | ||
887 | static int m2mtest_release(struct file *file) | |
888 | { | |
889 | struct m2mtest_dev *dev = video_drvdata(file); | |
d3dd59c2 | 890 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
891 | |
892 | dprintk(dev, "Releasing instance %p\n", ctx); | |
893 | ||
d3dd59c2 HV |
894 | v4l2_fh_del(&ctx->fh); |
895 | v4l2_fh_exit(&ctx->fh); | |
896 | v4l2_ctrl_handler_free(&ctx->hdl); | |
f4694039 | 897 | mutex_lock(&dev->dev_mutex); |
20702ebc | 898 | v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); |
f4694039 | 899 | mutex_unlock(&dev->dev_mutex); |
96d8eab5 PO |
900 | kfree(ctx); |
901 | ||
902 | atomic_dec(&dev->num_inst); | |
903 | ||
904 | return 0; | |
905 | } | |
906 | ||
96d8eab5 PO |
907 | static const struct v4l2_file_operations m2mtest_fops = { |
908 | .owner = THIS_MODULE, | |
909 | .open = m2mtest_open, | |
910 | .release = m2mtest_release, | |
20702ebc | 911 | .poll = v4l2_m2m_fop_poll, |
07e80305 | 912 | .unlocked_ioctl = video_ioctl2, |
20702ebc | 913 | .mmap = v4l2_m2m_fop_mmap, |
96d8eab5 PO |
914 | }; |
915 | ||
916 | static struct video_device m2mtest_videodev = { | |
917 | .name = MEM2MEM_NAME, | |
954f340f | 918 | .vfl_dir = VFL_DIR_M2M, |
96d8eab5 PO |
919 | .fops = &m2mtest_fops, |
920 | .ioctl_ops = &m2mtest_ioctl_ops, | |
921 | .minor = -1, | |
922 | .release = video_device_release, | |
923 | }; | |
924 | ||
925 | static struct v4l2_m2m_ops m2m_ops = { | |
926 | .device_run = device_run, | |
927 | .job_ready = job_ready, | |
928 | .job_abort = job_abort, | |
929 | }; | |
930 | ||
931 | static int m2mtest_probe(struct platform_device *pdev) | |
932 | { | |
933 | struct m2mtest_dev *dev; | |
934 | struct video_device *vfd; | |
935 | int ret; | |
936 | ||
38a7996c | 937 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); |
96d8eab5 PO |
938 | if (!dev) |
939 | return -ENOMEM; | |
940 | ||
941 | spin_lock_init(&dev->irqlock); | |
942 | ||
943 | ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); | |
944 | if (ret) | |
38a7996c | 945 | return ret; |
96d8eab5 PO |
946 | |
947 | atomic_set(&dev->num_inst, 0); | |
948 | mutex_init(&dev->dev_mutex); | |
949 | ||
950 | vfd = video_device_alloc(); | |
951 | if (!vfd) { | |
952 | v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); | |
953 | ret = -ENOMEM; | |
954 | goto unreg_dev; | |
955 | } | |
956 | ||
957 | *vfd = m2mtest_videodev; | |
07e80305 | 958 | vfd->lock = &dev->dev_mutex; |
8f484d87 | 959 | vfd->v4l2_dev = &dev->v4l2_dev; |
96d8eab5 PO |
960 | |
961 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); | |
962 | if (ret) { | |
963 | v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); | |
964 | goto rel_vdev; | |
965 | } | |
966 | ||
967 | video_set_drvdata(vfd, dev); | |
968 | snprintf(vfd->name, sizeof(vfd->name), "%s", m2mtest_videodev.name); | |
969 | dev->vfd = vfd; | |
8f484d87 | 970 | v4l2_info(&dev->v4l2_dev, |
96d8eab5 PO |
971 | "Device registered as /dev/video%d\n", vfd->num); |
972 | ||
973 | setup_timer(&dev->timer, device_isr, (long)dev); | |
974 | platform_set_drvdata(pdev, dev); | |
975 | ||
976 | dev->m2m_dev = v4l2_m2m_init(&m2m_ops); | |
977 | if (IS_ERR(dev->m2m_dev)) { | |
978 | v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); | |
979 | ret = PTR_ERR(dev->m2m_dev); | |
980 | goto err_m2m; | |
981 | } | |
982 | ||
983 | return 0; | |
984 | ||
985 | err_m2m: | |
b7e13ef7 | 986 | v4l2_m2m_release(dev->m2m_dev); |
96d8eab5 PO |
987 | video_unregister_device(dev->vfd); |
988 | rel_vdev: | |
989 | video_device_release(vfd); | |
990 | unreg_dev: | |
991 | v4l2_device_unregister(&dev->v4l2_dev); | |
96d8eab5 PO |
992 | |
993 | return ret; | |
994 | } | |
995 | ||
996 | static int m2mtest_remove(struct platform_device *pdev) | |
997 | { | |
ede79413 | 998 | struct m2mtest_dev *dev = platform_get_drvdata(pdev); |
96d8eab5 PO |
999 | |
1000 | v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_TEST_MODULE_NAME); | |
1001 | v4l2_m2m_release(dev->m2m_dev); | |
1002 | del_timer_sync(&dev->timer); | |
1003 | video_unregister_device(dev->vfd); | |
1004 | v4l2_device_unregister(&dev->v4l2_dev); | |
96d8eab5 PO |
1005 | |
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | static struct platform_driver m2mtest_pdrv = { | |
1010 | .probe = m2mtest_probe, | |
1011 | .remove = m2mtest_remove, | |
1012 | .driver = { | |
1013 | .name = MEM2MEM_NAME, | |
1014 | .owner = THIS_MODULE, | |
1015 | }, | |
1016 | }; | |
1017 | ||
1018 | static void __exit m2mtest_exit(void) | |
1019 | { | |
1020 | platform_driver_unregister(&m2mtest_pdrv); | |
1021 | platform_device_unregister(&m2mtest_pdev); | |
1022 | } | |
1023 | ||
1024 | static int __init m2mtest_init(void) | |
1025 | { | |
1026 | int ret; | |
1027 | ||
1028 | ret = platform_device_register(&m2mtest_pdev); | |
1029 | if (ret) | |
1030 | return ret; | |
1031 | ||
1032 | ret = platform_driver_register(&m2mtest_pdrv); | |
1033 | if (ret) | |
1034 | platform_device_unregister(&m2mtest_pdev); | |
1035 | ||
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | module_init(m2mtest_init); | |
1040 | module_exit(m2mtest_exit); |