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 | ||
47556ffa HV |
174 | enum v4l2_colorspace colorspace; |
175 | ||
96d8eab5 | 176 | struct v4l2_m2m_ctx *m2m_ctx; |
9f4161a6 TM |
177 | |
178 | /* Source and destination queue data */ | |
179 | struct m2mtest_q_data q_data[2]; | |
96d8eab5 PO |
180 | }; |
181 | ||
d3dd59c2 HV |
182 | static inline struct m2mtest_ctx *file2ctx(struct file *file) |
183 | { | |
184 | return container_of(file->private_data, struct m2mtest_ctx, fh); | |
185 | } | |
186 | ||
9f4161a6 TM |
187 | static struct m2mtest_q_data *get_q_data(struct m2mtest_ctx *ctx, |
188 | enum v4l2_buf_type type) | |
189 | { | |
190 | switch (type) { | |
191 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
192 | return &ctx->q_data[V4L2_M2M_SRC]; | |
193 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
194 | return &ctx->q_data[V4L2_M2M_DST]; | |
195 | default: | |
196 | BUG(); | |
197 | } | |
198 | return NULL; | |
199 | } | |
200 | ||
201 | ||
96d8eab5 | 202 | static int device_process(struct m2mtest_ctx *ctx, |
d80ee38c MS |
203 | struct vb2_buffer *in_vb, |
204 | struct vb2_buffer *out_vb) | |
96d8eab5 PO |
205 | { |
206 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 207 | struct m2mtest_q_data *q_data; |
96d8eab5 PO |
208 | u8 *p_in, *p_out; |
209 | int x, y, t, w; | |
210 | int tile_w, bytes_left; | |
d80ee38c | 211 | int width, height, bytesperline; |
96d8eab5 | 212 | |
9f4161a6 | 213 | q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); |
d80ee38c MS |
214 | |
215 | width = q_data->width; | |
216 | height = q_data->height; | |
217 | bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
218 | ||
219 | p_in = vb2_plane_vaddr(in_vb, 0); | |
220 | p_out = vb2_plane_vaddr(out_vb, 0); | |
96d8eab5 PO |
221 | if (!p_in || !p_out) { |
222 | v4l2_err(&dev->v4l2_dev, | |
223 | "Acquiring kernel pointers to buffers failed\n"); | |
224 | return -EFAULT; | |
225 | } | |
226 | ||
d80ee38c | 227 | if (vb2_plane_size(in_vb, 0) > vb2_plane_size(out_vb, 0)) { |
96d8eab5 PO |
228 | v4l2_err(&dev->v4l2_dev, "Output buffer is too small\n"); |
229 | return -EINVAL; | |
230 | } | |
231 | ||
d80ee38c | 232 | tile_w = (width * (q_data[V4L2_M2M_DST].fmt->depth >> 3)) |
96d8eab5 | 233 | / MEM2MEM_NUM_TILES; |
d80ee38c | 234 | bytes_left = bytesperline - tile_w * MEM2MEM_NUM_TILES; |
96d8eab5 PO |
235 | w = 0; |
236 | ||
80072871 TM |
237 | switch (ctx->mode) { |
238 | case MEM2MEM_HFLIP | MEM2MEM_VFLIP: | |
239 | p_out += bytesperline * height - bytes_left; | |
240 | for (y = 0; y < height; ++y) { | |
241 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
242 | if (w & 0x1) { | |
243 | for (x = 0; x < tile_w; ++x) | |
244 | *--p_out = *p_in++ + | |
245 | MEM2MEM_COLOR_STEP; | |
246 | } else { | |
247 | for (x = 0; x < tile_w; ++x) | |
248 | *--p_out = *p_in++ - | |
249 | MEM2MEM_COLOR_STEP; | |
250 | } | |
251 | ++w; | |
96d8eab5 | 252 | } |
80072871 TM |
253 | p_in += bytes_left; |
254 | p_out -= bytes_left; | |
255 | } | |
256 | break; | |
257 | ||
258 | case MEM2MEM_HFLIP: | |
259 | for (y = 0; y < height; ++y) { | |
260 | p_out += MEM2MEM_NUM_TILES * tile_w; | |
261 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
262 | if (w & 0x01) { | |
263 | for (x = 0; x < tile_w; ++x) | |
264 | *--p_out = *p_in++ + | |
265 | MEM2MEM_COLOR_STEP; | |
266 | } else { | |
267 | for (x = 0; x < tile_w; ++x) | |
268 | *--p_out = *p_in++ - | |
269 | MEM2MEM_COLOR_STEP; | |
270 | } | |
271 | ++w; | |
272 | } | |
273 | p_in += bytes_left; | |
274 | p_out += bytesperline; | |
275 | } | |
276 | break; | |
277 | ||
278 | case MEM2MEM_VFLIP: | |
279 | p_out += bytesperline * (height - 1); | |
280 | for (y = 0; y < height; ++y) { | |
281 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
282 | if (w & 0x1) { | |
283 | for (x = 0; x < tile_w; ++x) | |
284 | *p_out++ = *p_in++ + | |
285 | MEM2MEM_COLOR_STEP; | |
286 | } else { | |
287 | for (x = 0; x < tile_w; ++x) | |
288 | *p_out++ = *p_in++ - | |
289 | MEM2MEM_COLOR_STEP; | |
290 | } | |
291 | ++w; | |
292 | } | |
293 | p_in += bytes_left; | |
294 | p_out += bytes_left - 2 * bytesperline; | |
295 | } | |
296 | break; | |
297 | ||
298 | default: | |
299 | for (y = 0; y < height; ++y) { | |
300 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
301 | if (w & 0x1) { | |
302 | for (x = 0; x < tile_w; ++x) | |
303 | *p_out++ = *p_in++ + | |
304 | MEM2MEM_COLOR_STEP; | |
305 | } else { | |
306 | for (x = 0; x < tile_w; ++x) | |
307 | *p_out++ = *p_in++ - | |
308 | MEM2MEM_COLOR_STEP; | |
309 | } | |
310 | ++w; | |
311 | } | |
312 | p_in += bytes_left; | |
313 | p_out += bytes_left; | |
96d8eab5 | 314 | } |
96d8eab5 PO |
315 | } |
316 | ||
317 | return 0; | |
318 | } | |
319 | ||
320 | static void schedule_irq(struct m2mtest_dev *dev, int msec_timeout) | |
321 | { | |
322 | dprintk(dev, "Scheduling a simulated irq\n"); | |
323 | mod_timer(&dev->timer, jiffies + msecs_to_jiffies(msec_timeout)); | |
324 | } | |
325 | ||
326 | /* | |
327 | * mem2mem callbacks | |
328 | */ | |
329 | ||
330 | /** | |
331 | * job_ready() - check whether an instance is ready to be scheduled to run | |
332 | */ | |
333 | static int job_ready(void *priv) | |
334 | { | |
335 | struct m2mtest_ctx *ctx = priv; | |
336 | ||
337 | if (v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) < ctx->translen | |
338 | || v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx) < ctx->translen) { | |
339 | dprintk(ctx->dev, "Not enough buffers available\n"); | |
340 | return 0; | |
341 | } | |
342 | ||
343 | return 1; | |
344 | } | |
345 | ||
346 | static void job_abort(void *priv) | |
347 | { | |
348 | struct m2mtest_ctx *ctx = priv; | |
349 | ||
350 | /* Will cancel the transaction in the next interrupt handler */ | |
351 | ctx->aborting = 1; | |
352 | } | |
353 | ||
d80ee38c MS |
354 | static void m2mtest_lock(void *priv) |
355 | { | |
356 | struct m2mtest_ctx *ctx = priv; | |
357 | struct m2mtest_dev *dev = ctx->dev; | |
358 | mutex_lock(&dev->dev_mutex); | |
359 | } | |
360 | ||
361 | static void m2mtest_unlock(void *priv) | |
362 | { | |
363 | struct m2mtest_ctx *ctx = priv; | |
364 | struct m2mtest_dev *dev = ctx->dev; | |
365 | mutex_unlock(&dev->dev_mutex); | |
366 | } | |
367 | ||
368 | ||
96d8eab5 PO |
369 | /* device_run() - prepares and starts the device |
370 | * | |
371 | * This simulates all the immediate preparations required before starting | |
372 | * a device. This will be called by the framework when it decides to schedule | |
373 | * a particular instance. | |
374 | */ | |
375 | static void device_run(void *priv) | |
376 | { | |
377 | struct m2mtest_ctx *ctx = priv; | |
378 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 379 | struct vb2_buffer *src_buf, *dst_buf; |
96d8eab5 PO |
380 | |
381 | src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); | |
382 | dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); | |
383 | ||
384 | device_process(ctx, src_buf, dst_buf); | |
385 | ||
386 | /* Run a timer, which simulates a hardware irq */ | |
387 | schedule_irq(dev, ctx->transtime); | |
388 | } | |
389 | ||
96d8eab5 PO |
390 | static void device_isr(unsigned long priv) |
391 | { | |
392 | struct m2mtest_dev *m2mtest_dev = (struct m2mtest_dev *)priv; | |
393 | struct m2mtest_ctx *curr_ctx; | |
d80ee38c | 394 | struct vb2_buffer *src_vb, *dst_vb; |
96d8eab5 PO |
395 | unsigned long flags; |
396 | ||
397 | curr_ctx = v4l2_m2m_get_curr_priv(m2mtest_dev->m2m_dev); | |
398 | ||
399 | if (NULL == curr_ctx) { | |
400 | printk(KERN_ERR | |
401 | "Instance released before the end of transaction\n"); | |
402 | return; | |
403 | } | |
404 | ||
d80ee38c MS |
405 | src_vb = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx); |
406 | dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx); | |
407 | ||
96d8eab5 PO |
408 | curr_ctx->num_processed++; |
409 | ||
d80ee38c MS |
410 | spin_lock_irqsave(&m2mtest_dev->irqlock, flags); |
411 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); | |
412 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); | |
413 | spin_unlock_irqrestore(&m2mtest_dev->irqlock, flags); | |
414 | ||
96d8eab5 PO |
415 | if (curr_ctx->num_processed == curr_ctx->translen |
416 | || curr_ctx->aborting) { | |
417 | dprintk(curr_ctx->dev, "Finishing transaction\n"); | |
418 | curr_ctx->num_processed = 0; | |
96d8eab5 PO |
419 | v4l2_m2m_job_finish(m2mtest_dev->m2m_dev, curr_ctx->m2m_ctx); |
420 | } else { | |
96d8eab5 PO |
421 | device_run(curr_ctx); |
422 | } | |
423 | } | |
424 | ||
96d8eab5 PO |
425 | /* |
426 | * video ioctls | |
427 | */ | |
428 | static int vidioc_querycap(struct file *file, void *priv, | |
429 | struct v4l2_capability *cap) | |
430 | { | |
431 | strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1); | |
432 | strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1); | |
b0d14996 | 433 | strlcpy(cap->bus_info, MEM2MEM_NAME, sizeof(cap->bus_info)); |
f0476a83 | 434 | cap->capabilities = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; |
b0d14996 | 435 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
96d8eab5 PO |
436 | return 0; |
437 | } | |
438 | ||
439 | static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) | |
440 | { | |
441 | int i, num; | |
442 | struct m2mtest_fmt *fmt; | |
443 | ||
444 | num = 0; | |
445 | ||
446 | for (i = 0; i < NUM_FORMATS; ++i) { | |
447 | if (formats[i].types & type) { | |
448 | /* index-th format of type type found ? */ | |
449 | if (num == f->index) | |
450 | break; | |
451 | /* Correct type but haven't reached our index yet, | |
452 | * just increment per-type index */ | |
453 | ++num; | |
454 | } | |
455 | } | |
456 | ||
457 | if (i < NUM_FORMATS) { | |
458 | /* Format found */ | |
459 | fmt = &formats[i]; | |
460 | strncpy(f->description, fmt->name, sizeof(f->description) - 1); | |
461 | f->pixelformat = fmt->fourcc; | |
462 | return 0; | |
463 | } | |
464 | ||
465 | /* Format not found */ | |
466 | return -EINVAL; | |
467 | } | |
468 | ||
469 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
470 | struct v4l2_fmtdesc *f) | |
471 | { | |
472 | return enum_fmt(f, MEM2MEM_CAPTURE); | |
473 | } | |
474 | ||
475 | static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, | |
476 | struct v4l2_fmtdesc *f) | |
477 | { | |
478 | return enum_fmt(f, MEM2MEM_OUTPUT); | |
479 | } | |
480 | ||
481 | static int vidioc_g_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
482 | { | |
d80ee38c | 483 | struct vb2_queue *vq; |
96d8eab5 PO |
484 | struct m2mtest_q_data *q_data; |
485 | ||
486 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
487 | if (!vq) | |
488 | return -EINVAL; | |
489 | ||
9f4161a6 | 490 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
491 | |
492 | f->fmt.pix.width = q_data->width; | |
493 | f->fmt.pix.height = q_data->height; | |
d80ee38c | 494 | f->fmt.pix.field = V4L2_FIELD_NONE; |
96d8eab5 PO |
495 | f->fmt.pix.pixelformat = q_data->fmt->fourcc; |
496 | f->fmt.pix.bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
497 | f->fmt.pix.sizeimage = q_data->sizeimage; | |
47556ffa | 498 | f->fmt.pix.colorspace = ctx->colorspace; |
96d8eab5 PO |
499 | |
500 | return 0; | |
501 | } | |
502 | ||
503 | static int vidioc_g_fmt_vid_out(struct file *file, void *priv, | |
504 | struct v4l2_format *f) | |
505 | { | |
d3dd59c2 | 506 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
507 | } |
508 | ||
509 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
510 | struct v4l2_format *f) | |
511 | { | |
d3dd59c2 | 512 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
513 | } |
514 | ||
515 | static int vidioc_try_fmt(struct v4l2_format *f, struct m2mtest_fmt *fmt) | |
516 | { | |
517 | enum v4l2_field field; | |
518 | ||
519 | field = f->fmt.pix.field; | |
520 | ||
521 | if (field == V4L2_FIELD_ANY) | |
522 | field = V4L2_FIELD_NONE; | |
523 | else if (V4L2_FIELD_NONE != field) | |
524 | return -EINVAL; | |
525 | ||
526 | /* V4L2 specification suggests the driver corrects the format struct | |
527 | * if any of the dimensions is unsupported */ | |
528 | f->fmt.pix.field = field; | |
529 | ||
530 | if (f->fmt.pix.height < MIN_H) | |
531 | f->fmt.pix.height = MIN_H; | |
532 | else if (f->fmt.pix.height > MAX_H) | |
533 | f->fmt.pix.height = MAX_H; | |
534 | ||
535 | if (f->fmt.pix.width < MIN_W) | |
536 | f->fmt.pix.width = MIN_W; | |
537 | else if (f->fmt.pix.width > MAX_W) | |
538 | f->fmt.pix.width = MAX_W; | |
539 | ||
540 | f->fmt.pix.width &= ~DIM_ALIGN_MASK; | |
541 | f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; | |
542 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
548 | struct v4l2_format *f) | |
549 | { | |
550 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 551 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
552 | |
553 | fmt = find_format(f); | |
554 | if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) { | |
555 | v4l2_err(&ctx->dev->v4l2_dev, | |
556 | "Fourcc format (0x%08x) invalid.\n", | |
557 | f->fmt.pix.pixelformat); | |
558 | return -EINVAL; | |
559 | } | |
47556ffa | 560 | f->fmt.pix.colorspace = ctx->colorspace; |
96d8eab5 PO |
561 | |
562 | return vidioc_try_fmt(f, fmt); | |
563 | } | |
564 | ||
565 | static int vidioc_try_fmt_vid_out(struct file *file, void *priv, | |
566 | struct v4l2_format *f) | |
567 | { | |
568 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 569 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
570 | |
571 | fmt = find_format(f); | |
572 | if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) { | |
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 PO |
588 | |
589 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
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 | ||
643 | static int vidioc_reqbufs(struct file *file, void *priv, | |
644 | struct v4l2_requestbuffers *reqbufs) | |
645 | { | |
d3dd59c2 | 646 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
647 | |
648 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); | |
649 | } | |
650 | ||
651 | static int vidioc_querybuf(struct file *file, void *priv, | |
652 | struct v4l2_buffer *buf) | |
653 | { | |
d3dd59c2 | 654 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
655 | |
656 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); | |
657 | } | |
658 | ||
659 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
660 | { | |
d3dd59c2 | 661 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
662 | |
663 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); | |
664 | } | |
665 | ||
666 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
667 | { | |
d3dd59c2 | 668 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
669 | |
670 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); | |
671 | } | |
672 | ||
673 | static int vidioc_streamon(struct file *file, void *priv, | |
674 | enum v4l2_buf_type type) | |
675 | { | |
d3dd59c2 | 676 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
677 | |
678 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); | |
679 | } | |
680 | ||
681 | static int vidioc_streamoff(struct file *file, void *priv, | |
682 | enum v4l2_buf_type type) | |
683 | { | |
d3dd59c2 | 684 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
685 | |
686 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); | |
687 | } | |
688 | ||
d3dd59c2 | 689 | static int m2mtest_s_ctrl(struct v4l2_ctrl *ctrl) |
96d8eab5 | 690 | { |
d3dd59c2 HV |
691 | struct m2mtest_ctx *ctx = |
692 | container_of(ctrl->handler, struct m2mtest_ctx, hdl); | |
96d8eab5 PO |
693 | |
694 | switch (ctrl->id) { | |
80072871 | 695 | case V4L2_CID_HFLIP: |
d3dd59c2 | 696 | if (ctrl->val) |
80072871 TM |
697 | ctx->mode |= MEM2MEM_HFLIP; |
698 | else | |
699 | ctx->mode &= ~MEM2MEM_HFLIP; | |
700 | break; | |
701 | ||
702 | case V4L2_CID_VFLIP: | |
d3dd59c2 | 703 | if (ctrl->val) |
80072871 TM |
704 | ctx->mode |= MEM2MEM_VFLIP; |
705 | else | |
706 | ctx->mode &= ~MEM2MEM_VFLIP; | |
707 | break; | |
708 | ||
96d8eab5 | 709 | case V4L2_CID_TRANS_TIME_MSEC: |
d3dd59c2 | 710 | ctx->transtime = ctrl->val; |
96d8eab5 PO |
711 | break; |
712 | ||
713 | case V4L2_CID_TRANS_NUM_BUFS: | |
d3dd59c2 | 714 | ctx->translen = ctrl->val; |
96d8eab5 PO |
715 | break; |
716 | ||
717 | default: | |
718 | v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n"); | |
719 | return -EINVAL; | |
720 | } | |
721 | ||
722 | return 0; | |
723 | } | |
724 | ||
d3dd59c2 HV |
725 | static const struct v4l2_ctrl_ops m2mtest_ctrl_ops = { |
726 | .s_ctrl = m2mtest_s_ctrl, | |
727 | }; | |
728 | ||
96d8eab5 PO |
729 | |
730 | static const struct v4l2_ioctl_ops m2mtest_ioctl_ops = { | |
731 | .vidioc_querycap = vidioc_querycap, | |
732 | ||
733 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
734 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
735 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
736 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
737 | ||
738 | .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, | |
739 | .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, | |
740 | .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, | |
741 | .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, | |
742 | ||
743 | .vidioc_reqbufs = vidioc_reqbufs, | |
744 | .vidioc_querybuf = vidioc_querybuf, | |
745 | ||
746 | .vidioc_qbuf = vidioc_qbuf, | |
747 | .vidioc_dqbuf = vidioc_dqbuf, | |
748 | ||
749 | .vidioc_streamon = vidioc_streamon, | |
750 | .vidioc_streamoff = vidioc_streamoff, | |
97a3c902 HV |
751 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
752 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
96d8eab5 PO |
753 | }; |
754 | ||
755 | ||
756 | /* | |
757 | * Queue operations | |
758 | */ | |
759 | ||
fc714e70 GL |
760 | static int m2mtest_queue_setup(struct vb2_queue *vq, |
761 | const struct v4l2_format *fmt, | |
762 | unsigned int *nbuffers, unsigned int *nplanes, | |
763 | unsigned int sizes[], void *alloc_ctxs[]) | |
96d8eab5 | 764 | { |
d80ee38c | 765 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vq); |
96d8eab5 | 766 | struct m2mtest_q_data *q_data; |
d80ee38c | 767 | unsigned int size, count = *nbuffers; |
96d8eab5 | 768 | |
9f4161a6 | 769 | q_data = get_q_data(ctx, vq->type); |
96d8eab5 | 770 | |
d80ee38c MS |
771 | size = q_data->width * q_data->height * q_data->fmt->depth >> 3; |
772 | ||
773 | while (size * count > MEM2MEM_VID_MEM_LIMIT) | |
774 | (count)--; | |
96d8eab5 | 775 | |
d80ee38c MS |
776 | *nplanes = 1; |
777 | *nbuffers = count; | |
778 | sizes[0] = size; | |
96d8eab5 | 779 | |
d80ee38c MS |
780 | /* |
781 | * videobuf2-vmalloc allocator is context-less so no need to set | |
782 | * alloc_ctxs array. | |
783 | */ | |
96d8eab5 | 784 | |
d80ee38c | 785 | dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); |
96d8eab5 PO |
786 | |
787 | return 0; | |
788 | } | |
789 | ||
d80ee38c | 790 | static int m2mtest_buf_prepare(struct vb2_buffer *vb) |
96d8eab5 | 791 | { |
d80ee38c | 792 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
96d8eab5 | 793 | struct m2mtest_q_data *q_data; |
96d8eab5 | 794 | |
d80ee38c | 795 | dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); |
96d8eab5 | 796 | |
9f4161a6 | 797 | q_data = get_q_data(ctx, vb->vb2_queue->type); |
96d8eab5 | 798 | |
d80ee38c MS |
799 | if (vb2_plane_size(vb, 0) < q_data->sizeimage) { |
800 | dprintk(ctx->dev, "%s data will not fit into plane (%lu < %lu)\n", | |
801 | __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); | |
96d8eab5 PO |
802 | return -EINVAL; |
803 | } | |
804 | ||
d80ee38c | 805 | vb2_set_plane_payload(vb, 0, q_data->sizeimage); |
96d8eab5 PO |
806 | |
807 | return 0; | |
96d8eab5 PO |
808 | } |
809 | ||
d80ee38c | 810 | static void m2mtest_buf_queue(struct vb2_buffer *vb) |
96d8eab5 | 811 | { |
d80ee38c MS |
812 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
813 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); | |
96d8eab5 PO |
814 | } |
815 | ||
0f910bf0 MO |
816 | static void m2mtest_wait_prepare(struct vb2_queue *q) |
817 | { | |
818 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
819 | m2mtest_unlock(ctx); | |
820 | } | |
821 | ||
822 | static void m2mtest_wait_finish(struct vb2_queue *q) | |
823 | { | |
824 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
825 | m2mtest_lock(ctx); | |
826 | } | |
827 | ||
d80ee38c MS |
828 | static struct vb2_ops m2mtest_qops = { |
829 | .queue_setup = m2mtest_queue_setup, | |
830 | .buf_prepare = m2mtest_buf_prepare, | |
831 | .buf_queue = m2mtest_buf_queue, | |
0f910bf0 MO |
832 | .wait_prepare = m2mtest_wait_prepare, |
833 | .wait_finish = m2mtest_wait_finish, | |
96d8eab5 PO |
834 | }; |
835 | ||
d80ee38c | 836 | static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) |
96d8eab5 PO |
837 | { |
838 | struct m2mtest_ctx *ctx = priv; | |
d80ee38c | 839 | int ret; |
96d8eab5 | 840 | |
d80ee38c MS |
841 | memset(src_vq, 0, sizeof(*src_vq)); |
842 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
843 | src_vq->io_modes = VB2_MMAP; | |
844 | src_vq->drv_priv = ctx; | |
845 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
846 | src_vq->ops = &m2mtest_qops; | |
847 | src_vq->mem_ops = &vb2_vmalloc_memops; | |
848 | ||
849 | ret = vb2_queue_init(src_vq); | |
850 | if (ret) | |
851 | return ret; | |
96d8eab5 | 852 | |
d80ee38c MS |
853 | memset(dst_vq, 0, sizeof(*dst_vq)); |
854 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
855 | dst_vq->io_modes = VB2_MMAP; | |
856 | dst_vq->drv_priv = ctx; | |
857 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
858 | dst_vq->ops = &m2mtest_qops; | |
859 | dst_vq->mem_ops = &vb2_vmalloc_memops; | |
860 | ||
861 | return vb2_queue_init(dst_vq); | |
862 | } | |
96d8eab5 | 863 | |
d3dd59c2 HV |
864 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_time_msec = { |
865 | .ops = &m2mtest_ctrl_ops, | |
866 | .id = V4L2_CID_TRANS_TIME_MSEC, | |
867 | .name = "Transaction Time (msec)", | |
868 | .type = V4L2_CTRL_TYPE_INTEGER, | |
869 | .def = 1001, | |
870 | .min = 1, | |
871 | .max = 10001, | |
872 | .step = 100, | |
873 | }; | |
874 | ||
875 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_num_bufs = { | |
876 | .ops = &m2mtest_ctrl_ops, | |
877 | .id = V4L2_CID_TRANS_NUM_BUFS, | |
878 | .name = "Buffers Per Transaction", | |
879 | .type = V4L2_CTRL_TYPE_INTEGER, | |
880 | .def = 1, | |
881 | .min = 1, | |
882 | .max = MEM2MEM_DEF_NUM_BUFS, | |
883 | .step = 1, | |
884 | }; | |
885 | ||
96d8eab5 PO |
886 | /* |
887 | * File operations | |
888 | */ | |
889 | static int m2mtest_open(struct file *file) | |
890 | { | |
891 | struct m2mtest_dev *dev = video_drvdata(file); | |
892 | struct m2mtest_ctx *ctx = NULL; | |
d3dd59c2 | 893 | struct v4l2_ctrl_handler *hdl; |
96d8eab5 PO |
894 | |
895 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); | |
896 | if (!ctx) | |
897 | return -ENOMEM; | |
898 | ||
d3dd59c2 HV |
899 | v4l2_fh_init(&ctx->fh, video_devdata(file)); |
900 | file->private_data = &ctx->fh; | |
96d8eab5 | 901 | ctx->dev = dev; |
d3dd59c2 HV |
902 | hdl = &ctx->hdl; |
903 | v4l2_ctrl_handler_init(hdl, 4); | |
904 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); | |
905 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); | |
906 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_time_msec, NULL); | |
907 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_num_bufs, NULL); | |
908 | if (hdl->error) { | |
909 | int err = hdl->error; | |
910 | ||
911 | v4l2_ctrl_handler_free(hdl); | |
912 | return err; | |
913 | } | |
914 | ctx->fh.ctrl_handler = hdl; | |
915 | v4l2_ctrl_handler_setup(hdl); | |
96d8eab5 | 916 | |
9f4161a6 | 917 | ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0]; |
47556ffa HV |
918 | ctx->q_data[V4L2_M2M_SRC].width = 640; |
919 | ctx->q_data[V4L2_M2M_SRC].height = 480; | |
920 | ctx->q_data[V4L2_M2M_SRC].sizeimage = | |
921 | ctx->q_data[V4L2_M2M_SRC].width * | |
922 | ctx->q_data[V4L2_M2M_SRC].height * | |
923 | (ctx->q_data[V4L2_M2M_SRC].fmt->depth >> 3); | |
924 | ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC]; | |
925 | ctx->colorspace = V4L2_COLORSPACE_REC709; | |
9f4161a6 | 926 | |
d80ee38c MS |
927 | ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); |
928 | ||
96d8eab5 | 929 | if (IS_ERR(ctx->m2m_ctx)) { |
16ee9bb1 DC |
930 | int ret = PTR_ERR(ctx->m2m_ctx); |
931 | ||
d3dd59c2 | 932 | v4l2_ctrl_handler_free(hdl); |
96d8eab5 | 933 | kfree(ctx); |
16ee9bb1 | 934 | return ret; |
96d8eab5 PO |
935 | } |
936 | ||
d3dd59c2 | 937 | v4l2_fh_add(&ctx->fh); |
96d8eab5 PO |
938 | atomic_inc(&dev->num_inst); |
939 | ||
940 | dprintk(dev, "Created instance %p, m2m_ctx: %p\n", ctx, ctx->m2m_ctx); | |
941 | ||
942 | return 0; | |
943 | } | |
944 | ||
945 | static int m2mtest_release(struct file *file) | |
946 | { | |
947 | struct m2mtest_dev *dev = video_drvdata(file); | |
d3dd59c2 | 948 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
949 | |
950 | dprintk(dev, "Releasing instance %p\n", ctx); | |
951 | ||
d3dd59c2 HV |
952 | v4l2_fh_del(&ctx->fh); |
953 | v4l2_fh_exit(&ctx->fh); | |
954 | v4l2_ctrl_handler_free(&ctx->hdl); | |
96d8eab5 PO |
955 | v4l2_m2m_ctx_release(ctx->m2m_ctx); |
956 | kfree(ctx); | |
957 | ||
958 | atomic_dec(&dev->num_inst); | |
959 | ||
960 | return 0; | |
961 | } | |
962 | ||
963 | static unsigned int m2mtest_poll(struct file *file, | |
964 | struct poll_table_struct *wait) | |
965 | { | |
d3dd59c2 | 966 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
967 | |
968 | return v4l2_m2m_poll(file, ctx->m2m_ctx, wait); | |
969 | } | |
970 | ||
971 | static int m2mtest_mmap(struct file *file, struct vm_area_struct *vma) | |
972 | { | |
d3dd59c2 | 973 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
974 | |
975 | return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); | |
976 | } | |
977 | ||
978 | static const struct v4l2_file_operations m2mtest_fops = { | |
979 | .owner = THIS_MODULE, | |
980 | .open = m2mtest_open, | |
981 | .release = m2mtest_release, | |
982 | .poll = m2mtest_poll, | |
07e80305 | 983 | .unlocked_ioctl = video_ioctl2, |
96d8eab5 PO |
984 | .mmap = m2mtest_mmap, |
985 | }; | |
986 | ||
987 | static struct video_device m2mtest_videodev = { | |
988 | .name = MEM2MEM_NAME, | |
989 | .fops = &m2mtest_fops, | |
990 | .ioctl_ops = &m2mtest_ioctl_ops, | |
991 | .minor = -1, | |
992 | .release = video_device_release, | |
993 | }; | |
994 | ||
995 | static struct v4l2_m2m_ops m2m_ops = { | |
996 | .device_run = device_run, | |
997 | .job_ready = job_ready, | |
998 | .job_abort = job_abort, | |
d80ee38c MS |
999 | .lock = m2mtest_lock, |
1000 | .unlock = m2mtest_unlock, | |
96d8eab5 PO |
1001 | }; |
1002 | ||
1003 | static int m2mtest_probe(struct platform_device *pdev) | |
1004 | { | |
1005 | struct m2mtest_dev *dev; | |
1006 | struct video_device *vfd; | |
1007 | int ret; | |
1008 | ||
1009 | dev = kzalloc(sizeof *dev, GFP_KERNEL); | |
1010 | if (!dev) | |
1011 | return -ENOMEM; | |
1012 | ||
1013 | spin_lock_init(&dev->irqlock); | |
1014 | ||
1015 | ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); | |
1016 | if (ret) | |
1017 | goto free_dev; | |
1018 | ||
1019 | atomic_set(&dev->num_inst, 0); | |
1020 | mutex_init(&dev->dev_mutex); | |
1021 | ||
1022 | vfd = video_device_alloc(); | |
1023 | if (!vfd) { | |
1024 | v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); | |
1025 | ret = -ENOMEM; | |
1026 | goto unreg_dev; | |
1027 | } | |
1028 | ||
1029 | *vfd = m2mtest_videodev; | |
5126f259 HV |
1030 | /* Locking in file operations other than ioctl should be done |
1031 | by the driver, not the V4L2 core. | |
1032 | This driver needs auditing so that this flag can be removed. */ | |
1033 | set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags); | |
07e80305 | 1034 | vfd->lock = &dev->dev_mutex; |
96d8eab5 PO |
1035 | |
1036 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); | |
1037 | if (ret) { | |
1038 | v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); | |
1039 | goto rel_vdev; | |
1040 | } | |
1041 | ||
1042 | video_set_drvdata(vfd, dev); | |
1043 | snprintf(vfd->name, sizeof(vfd->name), "%s", m2mtest_videodev.name); | |
1044 | dev->vfd = vfd; | |
1045 | v4l2_info(&dev->v4l2_dev, MEM2MEM_TEST_MODULE_NAME | |
1046 | "Device registered as /dev/video%d\n", vfd->num); | |
1047 | ||
1048 | setup_timer(&dev->timer, device_isr, (long)dev); | |
1049 | platform_set_drvdata(pdev, dev); | |
1050 | ||
1051 | dev->m2m_dev = v4l2_m2m_init(&m2m_ops); | |
1052 | if (IS_ERR(dev->m2m_dev)) { | |
1053 | v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); | |
1054 | ret = PTR_ERR(dev->m2m_dev); | |
1055 | goto err_m2m; | |
1056 | } | |
1057 | ||
1058 | return 0; | |
1059 | ||
d80ee38c | 1060 | v4l2_m2m_release(dev->m2m_dev); |
96d8eab5 PO |
1061 | err_m2m: |
1062 | video_unregister_device(dev->vfd); | |
1063 | rel_vdev: | |
1064 | video_device_release(vfd); | |
1065 | unreg_dev: | |
1066 | v4l2_device_unregister(&dev->v4l2_dev); | |
1067 | free_dev: | |
1068 | kfree(dev); | |
1069 | ||
1070 | return ret; | |
1071 | } | |
1072 | ||
1073 | static int m2mtest_remove(struct platform_device *pdev) | |
1074 | { | |
1075 | struct m2mtest_dev *dev = | |
1076 | (struct m2mtest_dev *)platform_get_drvdata(pdev); | |
1077 | ||
1078 | v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_TEST_MODULE_NAME); | |
1079 | v4l2_m2m_release(dev->m2m_dev); | |
1080 | del_timer_sync(&dev->timer); | |
1081 | video_unregister_device(dev->vfd); | |
1082 | v4l2_device_unregister(&dev->v4l2_dev); | |
1083 | kfree(dev); | |
1084 | ||
1085 | return 0; | |
1086 | } | |
1087 | ||
1088 | static struct platform_driver m2mtest_pdrv = { | |
1089 | .probe = m2mtest_probe, | |
1090 | .remove = m2mtest_remove, | |
1091 | .driver = { | |
1092 | .name = MEM2MEM_NAME, | |
1093 | .owner = THIS_MODULE, | |
1094 | }, | |
1095 | }; | |
1096 | ||
1097 | static void __exit m2mtest_exit(void) | |
1098 | { | |
1099 | platform_driver_unregister(&m2mtest_pdrv); | |
1100 | platform_device_unregister(&m2mtest_pdev); | |
1101 | } | |
1102 | ||
1103 | static int __init m2mtest_init(void) | |
1104 | { | |
1105 | int ret; | |
1106 | ||
1107 | ret = platform_device_register(&m2mtest_pdev); | |
1108 | if (ret) | |
1109 | return ret; | |
1110 | ||
1111 | ret = platform_driver_register(&m2mtest_pdrv); | |
1112 | if (ret) | |
1113 | platform_device_unregister(&m2mtest_pdev); | |
1114 | ||
1115 | return 0; | |
1116 | } | |
1117 | ||
1118 | module_init(m2mtest_init); | |
1119 | module_exit(m2mtest_exit); | |
1120 |