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Commit | Line | Data |
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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 | 33 | |
96d8eab5 | 34 | MODULE_DESCRIPTION("Virtual device for mem2mem framework testing"); |
95072084 | 35 | MODULE_AUTHOR("Pawel Osciak, <pawel@osciak.com>"); |
96d8eab5 | 36 | MODULE_LICENSE("GPL"); |
1990d50b | 37 | MODULE_VERSION("0.1.1"); |
1f923a42 | 38 | MODULE_ALIAS("mem2mem_testdev"); |
96d8eab5 | 39 | |
d95d7c64 HV |
40 | static unsigned debug; |
41 | module_param(debug, uint, 0644); | |
42 | MODULE_PARM_DESC(debug, "activates debug info"); | |
43 | ||
96d8eab5 PO |
44 | #define MIN_W 32 |
45 | #define MIN_H 32 | |
46 | #define MAX_W 640 | |
47 | #define MAX_H 480 | |
9ce3ce4d | 48 | #define DIM_ALIGN_MASK 7 /* 8-byte alignment for line length */ |
96d8eab5 PO |
49 | |
50 | /* Flags that indicate a format can be used for capture/output */ | |
51 | #define MEM2MEM_CAPTURE (1 << 0) | |
52 | #define MEM2MEM_OUTPUT (1 << 1) | |
53 | ||
1f923a42 | 54 | #define MEM2MEM_NAME "vim2m" |
96d8eab5 PO |
55 | |
56 | /* Per queue */ | |
57 | #define MEM2MEM_DEF_NUM_BUFS VIDEO_MAX_FRAME | |
58 | /* In bytes, per queue */ | |
59 | #define MEM2MEM_VID_MEM_LIMIT (16 * 1024 * 1024) | |
60 | ||
61 | /* Default transaction time in msec */ | |
43405831 | 62 | #define MEM2MEM_DEF_TRANSTIME 40 |
96d8eab5 PO |
63 | #define MEM2MEM_COLOR_STEP (0xff >> 4) |
64 | #define MEM2MEM_NUM_TILES 8 | |
65 | ||
80072871 TM |
66 | /* Flags that indicate processing mode */ |
67 | #define MEM2MEM_HFLIP (1 << 0) | |
68 | #define MEM2MEM_VFLIP (1 << 1) | |
69 | ||
96d8eab5 | 70 | #define dprintk(dev, fmt, arg...) \ |
d95d7c64 | 71 | v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) |
96d8eab5 PO |
72 | |
73 | ||
1f923a42 | 74 | static void vim2m_dev_release(struct device *dev) |
96d8eab5 PO |
75 | {} |
76 | ||
1f923a42 | 77 | static struct platform_device vim2m_pdev = { |
96d8eab5 | 78 | .name = MEM2MEM_NAME, |
1f923a42 | 79 | .dev.release = vim2m_dev_release, |
96d8eab5 PO |
80 | }; |
81 | ||
1f923a42 | 82 | struct vim2m_fmt { |
96d8eab5 PO |
83 | u32 fourcc; |
84 | int depth; | |
85 | /* Types the format can be used for */ | |
86 | u32 types; | |
87 | }; | |
88 | ||
1f923a42 | 89 | static struct vim2m_fmt formats[] = { |
96d8eab5 | 90 | { |
96d8eab5 PO |
91 | .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ |
92 | .depth = 16, | |
93 | /* Both capture and output format */ | |
94 | .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, | |
95 | }, | |
96 | { | |
96d8eab5 PO |
97 | .fourcc = V4L2_PIX_FMT_YUYV, |
98 | .depth = 16, | |
99 | /* Output-only format */ | |
100 | .types = MEM2MEM_OUTPUT, | |
101 | }, | |
102 | }; | |
103 | ||
d3dd59c2 HV |
104 | #define NUM_FORMATS ARRAY_SIZE(formats) |
105 | ||
96d8eab5 | 106 | /* Per-queue, driver-specific private data */ |
1f923a42 | 107 | struct vim2m_q_data { |
96d8eab5 PO |
108 | unsigned int width; |
109 | unsigned int height; | |
110 | unsigned int sizeimage; | |
ca5f5fdb | 111 | unsigned int sequence; |
1f923a42 | 112 | struct vim2m_fmt *fmt; |
96d8eab5 PO |
113 | }; |
114 | ||
115 | enum { | |
116 | V4L2_M2M_SRC = 0, | |
117 | V4L2_M2M_DST = 1, | |
118 | }; | |
119 | ||
d3dd59c2 HV |
120 | #define V4L2_CID_TRANS_TIME_MSEC (V4L2_CID_USER_BASE + 0x1000) |
121 | #define V4L2_CID_TRANS_NUM_BUFS (V4L2_CID_USER_BASE + 0x1001) | |
96d8eab5 | 122 | |
1f923a42 | 123 | static struct vim2m_fmt *find_format(struct v4l2_format *f) |
96d8eab5 | 124 | { |
1f923a42 | 125 | struct vim2m_fmt *fmt; |
96d8eab5 PO |
126 | unsigned int k; |
127 | ||
128 | for (k = 0; k < NUM_FORMATS; k++) { | |
129 | fmt = &formats[k]; | |
130 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
131 | break; | |
132 | } | |
133 | ||
134 | if (k == NUM_FORMATS) | |
135 | return NULL; | |
136 | ||
137 | return &formats[k]; | |
138 | } | |
139 | ||
1f923a42 | 140 | struct vim2m_dev { |
96d8eab5 | 141 | struct v4l2_device v4l2_dev; |
09365420 | 142 | struct video_device vfd; |
96d8eab5 PO |
143 | |
144 | atomic_t num_inst; | |
145 | struct mutex dev_mutex; | |
146 | spinlock_t irqlock; | |
147 | ||
148 | struct timer_list timer; | |
149 | ||
150 | struct v4l2_m2m_dev *m2m_dev; | |
151 | }; | |
152 | ||
1f923a42 | 153 | struct vim2m_ctx { |
d3dd59c2 | 154 | struct v4l2_fh fh; |
1f923a42 | 155 | struct vim2m_dev *dev; |
96d8eab5 | 156 | |
d3dd59c2 HV |
157 | struct v4l2_ctrl_handler hdl; |
158 | ||
96d8eab5 PO |
159 | /* Processed buffers in this transaction */ |
160 | u8 num_processed; | |
161 | ||
162 | /* Transaction length (i.e. how many buffers per transaction) */ | |
163 | u32 translen; | |
164 | /* Transaction time (i.e. simulated processing time) in milliseconds */ | |
165 | u32 transtime; | |
166 | ||
167 | /* Abort requested by m2m */ | |
168 | int aborting; | |
169 | ||
80072871 TM |
170 | /* Processing mode */ |
171 | int mode; | |
172 | ||
47556ffa | 173 | enum v4l2_colorspace colorspace; |
9f8b3333 HV |
174 | enum v4l2_ycbcr_encoding ycbcr_enc; |
175 | enum v4l2_xfer_func xfer_func; | |
176 | enum v4l2_quantization quant; | |
47556ffa | 177 | |
9f4161a6 | 178 | /* Source and destination queue data */ |
1f923a42 | 179 | struct vim2m_q_data q_data[2]; |
96d8eab5 PO |
180 | }; |
181 | ||
1f923a42 | 182 | static inline struct vim2m_ctx *file2ctx(struct file *file) |
d3dd59c2 | 183 | { |
1f923a42 | 184 | return container_of(file->private_data, struct vim2m_ctx, fh); |
d3dd59c2 HV |
185 | } |
186 | ||
1f923a42 | 187 | static struct vim2m_q_data *get_q_data(struct vim2m_ctx *ctx, |
9f4161a6 TM |
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 | ||
1f923a42 | 202 | static int device_process(struct vim2m_ctx *ctx, |
2d700715 JS |
203 | struct vb2_v4l2_buffer *in_vb, |
204 | struct vb2_v4l2_buffer *out_vb) | |
96d8eab5 | 205 | { |
1f923a42 HV |
206 | struct vim2m_dev *dev = ctx->dev; |
207 | struct vim2m_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 | ||
2d700715 JS |
219 | p_in = vb2_plane_vaddr(&in_vb->vb2_buf, 0); |
220 | p_out = vb2_plane_vaddr(&out_vb->vb2_buf, 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 | ||
2d700715 JS |
227 | if (vb2_plane_size(&in_vb->vb2_buf, 0) > |
228 | vb2_plane_size(&out_vb->vb2_buf, 0)) { | |
96d8eab5 PO |
229 | v4l2_err(&dev->v4l2_dev, "Output buffer is too small\n"); |
230 | return -EINVAL; | |
231 | } | |
232 | ||
d80ee38c | 233 | tile_w = (width * (q_data[V4L2_M2M_DST].fmt->depth >> 3)) |
96d8eab5 | 234 | / MEM2MEM_NUM_TILES; |
d80ee38c | 235 | bytes_left = bytesperline - tile_w * MEM2MEM_NUM_TILES; |
96d8eab5 PO |
236 | w = 0; |
237 | ||
2d700715 JS |
238 | out_vb->sequence = |
239 | get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE)->sequence++; | |
240 | in_vb->sequence = q_data->sequence++; | |
d6dd645e | 241 | out_vb->vb2_buf.timestamp = in_vb->vb2_buf.timestamp; |
2d700715 JS |
242 | |
243 | if (in_vb->flags & V4L2_BUF_FLAG_TIMECODE) | |
244 | out_vb->timecode = in_vb->timecode; | |
245 | out_vb->field = in_vb->field; | |
246 | out_vb->flags = in_vb->flags & | |
ca5f5fdb HV |
247 | (V4L2_BUF_FLAG_TIMECODE | |
248 | V4L2_BUF_FLAG_KEYFRAME | | |
249 | V4L2_BUF_FLAG_PFRAME | | |
250 | V4L2_BUF_FLAG_BFRAME | | |
251 | V4L2_BUF_FLAG_TSTAMP_SRC_MASK); | |
d95d7c64 | 252 | |
80072871 TM |
253 | switch (ctx->mode) { |
254 | case MEM2MEM_HFLIP | MEM2MEM_VFLIP: | |
255 | p_out += bytesperline * height - bytes_left; | |
256 | for (y = 0; y < height; ++y) { | |
257 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
258 | if (w & 0x1) { | |
259 | for (x = 0; x < tile_w; ++x) | |
260 | *--p_out = *p_in++ + | |
261 | MEM2MEM_COLOR_STEP; | |
262 | } else { | |
263 | for (x = 0; x < tile_w; ++x) | |
264 | *--p_out = *p_in++ - | |
265 | MEM2MEM_COLOR_STEP; | |
266 | } | |
267 | ++w; | |
96d8eab5 | 268 | } |
80072871 TM |
269 | p_in += bytes_left; |
270 | p_out -= bytes_left; | |
271 | } | |
272 | break; | |
273 | ||
274 | case MEM2MEM_HFLIP: | |
275 | for (y = 0; y < height; ++y) { | |
276 | p_out += MEM2MEM_NUM_TILES * tile_w; | |
277 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
278 | if (w & 0x01) { | |
279 | for (x = 0; x < tile_w; ++x) | |
280 | *--p_out = *p_in++ + | |
281 | MEM2MEM_COLOR_STEP; | |
282 | } else { | |
283 | for (x = 0; x < tile_w; ++x) | |
284 | *--p_out = *p_in++ - | |
285 | MEM2MEM_COLOR_STEP; | |
286 | } | |
287 | ++w; | |
288 | } | |
289 | p_in += bytes_left; | |
290 | p_out += bytesperline; | |
291 | } | |
292 | break; | |
293 | ||
294 | case MEM2MEM_VFLIP: | |
295 | p_out += bytesperline * (height - 1); | |
296 | for (y = 0; y < height; ++y) { | |
297 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
298 | if (w & 0x1) { | |
299 | for (x = 0; x < tile_w; ++x) | |
300 | *p_out++ = *p_in++ + | |
301 | MEM2MEM_COLOR_STEP; | |
302 | } else { | |
303 | for (x = 0; x < tile_w; ++x) | |
304 | *p_out++ = *p_in++ - | |
305 | MEM2MEM_COLOR_STEP; | |
306 | } | |
307 | ++w; | |
308 | } | |
309 | p_in += bytes_left; | |
310 | p_out += bytes_left - 2 * bytesperline; | |
311 | } | |
312 | break; | |
313 | ||
314 | default: | |
315 | for (y = 0; y < height; ++y) { | |
316 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
317 | if (w & 0x1) { | |
318 | for (x = 0; x < tile_w; ++x) | |
319 | *p_out++ = *p_in++ + | |
320 | MEM2MEM_COLOR_STEP; | |
321 | } else { | |
322 | for (x = 0; x < tile_w; ++x) | |
323 | *p_out++ = *p_in++ - | |
324 | MEM2MEM_COLOR_STEP; | |
325 | } | |
326 | ++w; | |
327 | } | |
328 | p_in += bytes_left; | |
329 | p_out += bytes_left; | |
96d8eab5 | 330 | } |
96d8eab5 PO |
331 | } |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
1f923a42 | 336 | static void schedule_irq(struct vim2m_dev *dev, int msec_timeout) |
96d8eab5 PO |
337 | { |
338 | dprintk(dev, "Scheduling a simulated irq\n"); | |
339 | mod_timer(&dev->timer, jiffies + msecs_to_jiffies(msec_timeout)); | |
340 | } | |
341 | ||
342 | /* | |
343 | * mem2mem callbacks | |
344 | */ | |
345 | ||
346 | /** | |
347 | * job_ready() - check whether an instance is ready to be scheduled to run | |
348 | */ | |
349 | static int job_ready(void *priv) | |
350 | { | |
1f923a42 | 351 | struct vim2m_ctx *ctx = priv; |
96d8eab5 | 352 | |
20702ebc SN |
353 | if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) < ctx->translen |
354 | || v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx) < ctx->translen) { | |
96d8eab5 PO |
355 | dprintk(ctx->dev, "Not enough buffers available\n"); |
356 | return 0; | |
357 | } | |
358 | ||
359 | return 1; | |
360 | } | |
361 | ||
362 | static void job_abort(void *priv) | |
363 | { | |
1f923a42 | 364 | struct vim2m_ctx *ctx = priv; |
96d8eab5 PO |
365 | |
366 | /* Will cancel the transaction in the next interrupt handler */ | |
367 | ctx->aborting = 1; | |
368 | } | |
369 | ||
370 | /* device_run() - prepares and starts the device | |
371 | * | |
372 | * This simulates all the immediate preparations required before starting | |
373 | * a device. This will be called by the framework when it decides to schedule | |
374 | * a particular instance. | |
375 | */ | |
376 | static void device_run(void *priv) | |
377 | { | |
1f923a42 HV |
378 | struct vim2m_ctx *ctx = priv; |
379 | struct vim2m_dev *dev = ctx->dev; | |
2d700715 | 380 | struct vb2_v4l2_buffer *src_buf, *dst_buf; |
96d8eab5 | 381 | |
20702ebc SN |
382 | src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); |
383 | dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); | |
96d8eab5 PO |
384 | |
385 | device_process(ctx, src_buf, dst_buf); | |
386 | ||
387 | /* Run a timer, which simulates a hardware irq */ | |
388 | schedule_irq(dev, ctx->transtime); | |
389 | } | |
390 | ||
96d8eab5 PO |
391 | static void device_isr(unsigned long priv) |
392 | { | |
1f923a42 HV |
393 | struct vim2m_dev *vim2m_dev = (struct vim2m_dev *)priv; |
394 | struct vim2m_ctx *curr_ctx; | |
2d700715 | 395 | struct vb2_v4l2_buffer *src_vb, *dst_vb; |
96d8eab5 PO |
396 | unsigned long flags; |
397 | ||
1f923a42 | 398 | curr_ctx = v4l2_m2m_get_curr_priv(vim2m_dev->m2m_dev); |
96d8eab5 PO |
399 | |
400 | if (NULL == curr_ctx) { | |
26fdcf09 | 401 | pr_err("Instance released before the end of transaction\n"); |
96d8eab5 PO |
402 | return; |
403 | } | |
404 | ||
20702ebc SN |
405 | src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx); |
406 | dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx); | |
d80ee38c | 407 | |
96d8eab5 PO |
408 | curr_ctx->num_processed++; |
409 | ||
1f923a42 | 410 | spin_lock_irqsave(&vim2m_dev->irqlock, flags); |
d80ee38c MS |
411 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); |
412 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); | |
1f923a42 | 413 | spin_unlock_irqrestore(&vim2m_dev->irqlock, flags); |
d80ee38c | 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; | |
1f923a42 | 419 | v4l2_m2m_job_finish(vim2m_dev->m2m_dev, curr_ctx->fh.m2m_ctx); |
96d8eab5 | 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); | |
72c2af6e HV |
433 | snprintf(cap->bus_info, sizeof(cap->bus_info), |
434 | "platform:%s", MEM2MEM_NAME); | |
00424c7e | 435 | cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; |
b0d14996 | 436 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
96d8eab5 PO |
437 | return 0; |
438 | } | |
439 | ||
440 | static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) | |
441 | { | |
442 | int i, num; | |
1f923a42 | 443 | struct vim2m_fmt *fmt; |
96d8eab5 PO |
444 | |
445 | num = 0; | |
446 | ||
447 | for (i = 0; i < NUM_FORMATS; ++i) { | |
448 | if (formats[i].types & type) { | |
449 | /* index-th format of type type found ? */ | |
450 | if (num == f->index) | |
451 | break; | |
452 | /* Correct type but haven't reached our index yet, | |
453 | * just increment per-type index */ | |
454 | ++num; | |
455 | } | |
456 | } | |
457 | ||
458 | if (i < NUM_FORMATS) { | |
459 | /* Format found */ | |
460 | fmt = &formats[i]; | |
96d8eab5 PO |
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 | ||
1f923a42 | 481 | static int vidioc_g_fmt(struct vim2m_ctx *ctx, struct v4l2_format *f) |
96d8eab5 | 482 | { |
d80ee38c | 483 | struct vb2_queue *vq; |
1f923a42 | 484 | struct vim2m_q_data *q_data; |
96d8eab5 | 485 | |
20702ebc | 486 | vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); |
96d8eab5 PO |
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; |
9f8b3333 HV |
499 | f->fmt.pix.xfer_func = ctx->xfer_func; |
500 | f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc; | |
501 | f->fmt.pix.quantization = ctx->quant; | |
96d8eab5 PO |
502 | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static int vidioc_g_fmt_vid_out(struct file *file, void *priv, | |
507 | struct v4l2_format *f) | |
508 | { | |
d3dd59c2 | 509 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
510 | } |
511 | ||
512 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
513 | struct v4l2_format *f) | |
514 | { | |
d3dd59c2 | 515 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
516 | } |
517 | ||
1f923a42 | 518 | static int vidioc_try_fmt(struct v4l2_format *f, struct vim2m_fmt *fmt) |
96d8eab5 | 519 | { |
96d8eab5 PO |
520 | /* V4L2 specification suggests the driver corrects the format struct |
521 | * if any of the dimensions is unsupported */ | |
96d8eab5 PO |
522 | if (f->fmt.pix.height < MIN_H) |
523 | f->fmt.pix.height = MIN_H; | |
524 | else if (f->fmt.pix.height > MAX_H) | |
525 | f->fmt.pix.height = MAX_H; | |
526 | ||
527 | if (f->fmt.pix.width < MIN_W) | |
528 | f->fmt.pix.width = MIN_W; | |
529 | else if (f->fmt.pix.width > MAX_W) | |
530 | f->fmt.pix.width = MAX_W; | |
531 | ||
532 | f->fmt.pix.width &= ~DIM_ALIGN_MASK; | |
533 | f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; | |
534 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
5c3112b5 | 535 | f->fmt.pix.field = V4L2_FIELD_NONE; |
96d8eab5 PO |
536 | |
537 | return 0; | |
538 | } | |
539 | ||
540 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
541 | struct v4l2_format *f) | |
542 | { | |
1f923a42 HV |
543 | struct vim2m_fmt *fmt; |
544 | struct vim2m_ctx *ctx = file2ctx(file); | |
96d8eab5 PO |
545 | |
546 | fmt = find_format(f); | |
4e8ec0a4 HV |
547 | if (!fmt) { |
548 | f->fmt.pix.pixelformat = formats[0].fourcc; | |
549 | fmt = find_format(f); | |
550 | } | |
551 | if (!(fmt->types & MEM2MEM_CAPTURE)) { | |
96d8eab5 PO |
552 | v4l2_err(&ctx->dev->v4l2_dev, |
553 | "Fourcc format (0x%08x) invalid.\n", | |
554 | f->fmt.pix.pixelformat); | |
555 | return -EINVAL; | |
556 | } | |
47556ffa | 557 | f->fmt.pix.colorspace = ctx->colorspace; |
9f8b3333 HV |
558 | f->fmt.pix.xfer_func = ctx->xfer_func; |
559 | f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc; | |
560 | f->fmt.pix.quantization = ctx->quant; | |
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 | { | |
1f923a42 HV |
568 | struct vim2m_fmt *fmt; |
569 | struct vim2m_ctx *ctx = file2ctx(file); | |
96d8eab5 PO |
570 | |
571 | fmt = find_format(f); | |
4e8ec0a4 HV |
572 | if (!fmt) { |
573 | f->fmt.pix.pixelformat = formats[0].fourcc; | |
574 | fmt = find_format(f); | |
575 | } | |
576 | if (!(fmt->types & MEM2MEM_OUTPUT)) { | |
96d8eab5 PO |
577 | v4l2_err(&ctx->dev->v4l2_dev, |
578 | "Fourcc format (0x%08x) invalid.\n", | |
579 | f->fmt.pix.pixelformat); | |
580 | return -EINVAL; | |
581 | } | |
47556ffa HV |
582 | if (!f->fmt.pix.colorspace) |
583 | f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; | |
96d8eab5 PO |
584 | |
585 | return vidioc_try_fmt(f, fmt); | |
586 | } | |
587 | ||
1f923a42 | 588 | static int vidioc_s_fmt(struct vim2m_ctx *ctx, struct v4l2_format *f) |
96d8eab5 | 589 | { |
1f923a42 | 590 | struct vim2m_q_data *q_data; |
d80ee38c | 591 | struct vb2_queue *vq; |
96d8eab5 | 592 | |
20702ebc | 593 | vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); |
96d8eab5 PO |
594 | if (!vq) |
595 | return -EINVAL; | |
596 | ||
9f4161a6 | 597 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
598 | if (!q_data) |
599 | return -EINVAL; | |
600 | ||
d80ee38c | 601 | if (vb2_is_busy(vq)) { |
96d8eab5 | 602 | v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); |
07e80305 | 603 | return -EBUSY; |
96d8eab5 PO |
604 | } |
605 | ||
606 | q_data->fmt = find_format(f); | |
607 | q_data->width = f->fmt.pix.width; | |
608 | q_data->height = f->fmt.pix.height; | |
609 | q_data->sizeimage = q_data->width * q_data->height | |
610 | * q_data->fmt->depth >> 3; | |
96d8eab5 PO |
611 | |
612 | dprintk(ctx->dev, | |
613 | "Setting format for type %d, wxh: %dx%d, fmt: %d\n", | |
614 | f->type, q_data->width, q_data->height, q_data->fmt->fourcc); | |
615 | ||
07e80305 | 616 | return 0; |
96d8eab5 PO |
617 | } |
618 | ||
619 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
620 | struct v4l2_format *f) | |
621 | { | |
622 | int ret; | |
623 | ||
624 | ret = vidioc_try_fmt_vid_cap(file, priv, f); | |
625 | if (ret) | |
626 | return ret; | |
627 | ||
d3dd59c2 | 628 | return vidioc_s_fmt(file2ctx(file), f); |
96d8eab5 PO |
629 | } |
630 | ||
631 | static int vidioc_s_fmt_vid_out(struct file *file, void *priv, | |
632 | struct v4l2_format *f) | |
633 | { | |
1f923a42 | 634 | struct vim2m_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
635 | int ret; |
636 | ||
637 | ret = vidioc_try_fmt_vid_out(file, priv, f); | |
638 | if (ret) | |
639 | return ret; | |
640 | ||
47556ffa | 641 | ret = vidioc_s_fmt(file2ctx(file), f); |
9f8b3333 | 642 | if (!ret) { |
47556ffa | 643 | ctx->colorspace = f->fmt.pix.colorspace; |
9f8b3333 HV |
644 | ctx->xfer_func = f->fmt.pix.xfer_func; |
645 | ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc; | |
646 | ctx->quant = f->fmt.pix.quantization; | |
647 | } | |
47556ffa | 648 | return ret; |
96d8eab5 PO |
649 | } |
650 | ||
1f923a42 | 651 | static int vim2m_s_ctrl(struct v4l2_ctrl *ctrl) |
96d8eab5 | 652 | { |
1f923a42 HV |
653 | struct vim2m_ctx *ctx = |
654 | container_of(ctrl->handler, struct vim2m_ctx, hdl); | |
96d8eab5 PO |
655 | |
656 | switch (ctrl->id) { | |
80072871 | 657 | case V4L2_CID_HFLIP: |
d3dd59c2 | 658 | if (ctrl->val) |
80072871 TM |
659 | ctx->mode |= MEM2MEM_HFLIP; |
660 | else | |
661 | ctx->mode &= ~MEM2MEM_HFLIP; | |
662 | break; | |
663 | ||
664 | case V4L2_CID_VFLIP: | |
d3dd59c2 | 665 | if (ctrl->val) |
80072871 TM |
666 | ctx->mode |= MEM2MEM_VFLIP; |
667 | else | |
668 | ctx->mode &= ~MEM2MEM_VFLIP; | |
669 | break; | |
670 | ||
96d8eab5 | 671 | case V4L2_CID_TRANS_TIME_MSEC: |
d3dd59c2 | 672 | ctx->transtime = ctrl->val; |
96d8eab5 PO |
673 | break; |
674 | ||
675 | case V4L2_CID_TRANS_NUM_BUFS: | |
d3dd59c2 | 676 | ctx->translen = ctrl->val; |
96d8eab5 PO |
677 | break; |
678 | ||
679 | default: | |
680 | v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n"); | |
681 | return -EINVAL; | |
682 | } | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
1f923a42 HV |
687 | static const struct v4l2_ctrl_ops vim2m_ctrl_ops = { |
688 | .s_ctrl = vim2m_s_ctrl, | |
d3dd59c2 HV |
689 | }; |
690 | ||
96d8eab5 | 691 | |
1f923a42 | 692 | static const struct v4l2_ioctl_ops vim2m_ioctl_ops = { |
96d8eab5 PO |
693 | .vidioc_querycap = vidioc_querycap, |
694 | ||
695 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
696 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
697 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
698 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
699 | ||
700 | .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, | |
701 | .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, | |
702 | .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, | |
703 | .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, | |
704 | ||
20702ebc SN |
705 | .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, |
706 | .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, | |
707 | .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, | |
708 | .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, | |
7bcff1c2 HV |
709 | .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf, |
710 | .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, | |
f5294f45 | 711 | .vidioc_expbuf = v4l2_m2m_ioctl_expbuf, |
96d8eab5 | 712 | |
20702ebc SN |
713 | .vidioc_streamon = v4l2_m2m_ioctl_streamon, |
714 | .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, | |
96d8eab5 | 715 | |
97a3c902 HV |
716 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
717 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
96d8eab5 PO |
718 | }; |
719 | ||
720 | ||
721 | /* | |
722 | * Queue operations | |
723 | */ | |
724 | ||
1f923a42 | 725 | static int vim2m_queue_setup(struct vb2_queue *vq, |
fc714e70 | 726 | unsigned int *nbuffers, unsigned int *nplanes, |
36c0f8b3 | 727 | unsigned int sizes[], struct device *alloc_devs[]) |
96d8eab5 | 728 | { |
1f923a42 HV |
729 | struct vim2m_ctx *ctx = vb2_get_drv_priv(vq); |
730 | struct vim2m_q_data *q_data; | |
d80ee38c | 731 | unsigned int size, count = *nbuffers; |
96d8eab5 | 732 | |
9f4161a6 | 733 | q_data = get_q_data(ctx, vq->type); |
96d8eab5 | 734 | |
d80ee38c MS |
735 | size = q_data->width * q_data->height * q_data->fmt->depth >> 3; |
736 | ||
737 | while (size * count > MEM2MEM_VID_MEM_LIMIT) | |
738 | (count)--; | |
df9ecb0c HV |
739 | *nbuffers = count; |
740 | ||
741 | if (*nplanes) | |
742 | return sizes[0] < size ? -EINVAL : 0; | |
96d8eab5 | 743 | |
d80ee38c | 744 | *nplanes = 1; |
d80ee38c | 745 | sizes[0] = size; |
96d8eab5 | 746 | |
d80ee38c | 747 | dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); |
96d8eab5 PO |
748 | |
749 | return 0; | |
750 | } | |
751 | ||
1f923a42 | 752 | static int vim2m_buf_prepare(struct vb2_buffer *vb) |
96d8eab5 | 753 | { |
2d700715 | 754 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
1f923a42 HV |
755 | struct vim2m_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
756 | struct vim2m_q_data *q_data; | |
96d8eab5 | 757 | |
d80ee38c | 758 | dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); |
96d8eab5 | 759 | |
9f4161a6 | 760 | q_data = get_q_data(ctx, vb->vb2_queue->type); |
5c3112b5 | 761 | if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) { |
2d700715 JS |
762 | if (vbuf->field == V4L2_FIELD_ANY) |
763 | vbuf->field = V4L2_FIELD_NONE; | |
764 | if (vbuf->field != V4L2_FIELD_NONE) { | |
5c3112b5 HV |
765 | dprintk(ctx->dev, "%s field isn't supported\n", |
766 | __func__); | |
767 | return -EINVAL; | |
768 | } | |
769 | } | |
96d8eab5 | 770 | |
d80ee38c MS |
771 | if (vb2_plane_size(vb, 0) < q_data->sizeimage) { |
772 | dprintk(ctx->dev, "%s data will not fit into plane (%lu < %lu)\n", | |
773 | __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); | |
96d8eab5 PO |
774 | return -EINVAL; |
775 | } | |
776 | ||
d80ee38c | 777 | vb2_set_plane_payload(vb, 0, q_data->sizeimage); |
96d8eab5 PO |
778 | |
779 | return 0; | |
96d8eab5 PO |
780 | } |
781 | ||
1f923a42 | 782 | static void vim2m_buf_queue(struct vb2_buffer *vb) |
96d8eab5 | 783 | { |
2d700715 | 784 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
1f923a42 | 785 | struct vim2m_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
ca5f5fdb | 786 | |
2d700715 | 787 | v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); |
0f910bf0 MO |
788 | } |
789 | ||
1f923a42 | 790 | static int vim2m_start_streaming(struct vb2_queue *q, unsigned count) |
ca5f5fdb | 791 | { |
1f923a42 HV |
792 | struct vim2m_ctx *ctx = vb2_get_drv_priv(q); |
793 | struct vim2m_q_data *q_data = get_q_data(ctx, q->type); | |
ca5f5fdb HV |
794 | |
795 | q_data->sequence = 0; | |
796 | return 0; | |
797 | } | |
798 | ||
1f923a42 | 799 | static void vim2m_stop_streaming(struct vb2_queue *q) |
a773632c | 800 | { |
1f923a42 | 801 | struct vim2m_ctx *ctx = vb2_get_drv_priv(q); |
2d700715 | 802 | struct vb2_v4l2_buffer *vbuf; |
a773632c HV |
803 | unsigned long flags; |
804 | ||
805 | for (;;) { | |
806 | if (V4L2_TYPE_IS_OUTPUT(q->type)) | |
2d700715 | 807 | vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); |
a773632c | 808 | else |
2d700715 JS |
809 | vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); |
810 | if (vbuf == NULL) | |
e37559b2 | 811 | return; |
a773632c | 812 | spin_lock_irqsave(&ctx->dev->irqlock, flags); |
2d700715 | 813 | v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR); |
a773632c HV |
814 | spin_unlock_irqrestore(&ctx->dev->irqlock, flags); |
815 | } | |
a773632c HV |
816 | } |
817 | ||
b7b361f0 | 818 | static const struct vb2_ops vim2m_qops = { |
1f923a42 HV |
819 | .queue_setup = vim2m_queue_setup, |
820 | .buf_prepare = vim2m_buf_prepare, | |
821 | .buf_queue = vim2m_buf_queue, | |
822 | .start_streaming = vim2m_start_streaming, | |
823 | .stop_streaming = vim2m_stop_streaming, | |
20702ebc SN |
824 | .wait_prepare = vb2_ops_wait_prepare, |
825 | .wait_finish = vb2_ops_wait_finish, | |
96d8eab5 PO |
826 | }; |
827 | ||
d80ee38c | 828 | static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) |
96d8eab5 | 829 | { |
1f923a42 | 830 | struct vim2m_ctx *ctx = priv; |
d80ee38c | 831 | int ret; |
96d8eab5 | 832 | |
d80ee38c | 833 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
782f36ca | 834 | src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; |
d80ee38c MS |
835 | src_vq->drv_priv = ctx; |
836 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
1f923a42 | 837 | src_vq->ops = &vim2m_qops; |
d80ee38c | 838 | src_vq->mem_ops = &vb2_vmalloc_memops; |
ade48681 | 839 | src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
20702ebc | 840 | src_vq->lock = &ctx->dev->dev_mutex; |
d80ee38c MS |
841 | |
842 | ret = vb2_queue_init(src_vq); | |
843 | if (ret) | |
844 | return ret; | |
96d8eab5 | 845 | |
d80ee38c | 846 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
782f36ca | 847 | dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; |
d80ee38c MS |
848 | dst_vq->drv_priv = ctx; |
849 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
1f923a42 | 850 | dst_vq->ops = &vim2m_qops; |
d80ee38c | 851 | dst_vq->mem_ops = &vb2_vmalloc_memops; |
ade48681 | 852 | dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
20702ebc | 853 | dst_vq->lock = &ctx->dev->dev_mutex; |
d80ee38c MS |
854 | |
855 | return vb2_queue_init(dst_vq); | |
856 | } | |
96d8eab5 | 857 | |
1f923a42 HV |
858 | static const struct v4l2_ctrl_config vim2m_ctrl_trans_time_msec = { |
859 | .ops = &vim2m_ctrl_ops, | |
d3dd59c2 HV |
860 | .id = V4L2_CID_TRANS_TIME_MSEC, |
861 | .name = "Transaction Time (msec)", | |
862 | .type = V4L2_CTRL_TYPE_INTEGER, | |
43405831 | 863 | .def = MEM2MEM_DEF_TRANSTIME, |
d3dd59c2 HV |
864 | .min = 1, |
865 | .max = 10001, | |
43405831 | 866 | .step = 1, |
d3dd59c2 HV |
867 | }; |
868 | ||
1f923a42 HV |
869 | static const struct v4l2_ctrl_config vim2m_ctrl_trans_num_bufs = { |
870 | .ops = &vim2m_ctrl_ops, | |
d3dd59c2 HV |
871 | .id = V4L2_CID_TRANS_NUM_BUFS, |
872 | .name = "Buffers Per Transaction", | |
873 | .type = V4L2_CTRL_TYPE_INTEGER, | |
874 | .def = 1, | |
875 | .min = 1, | |
876 | .max = MEM2MEM_DEF_NUM_BUFS, | |
877 | .step = 1, | |
878 | }; | |
879 | ||
96d8eab5 PO |
880 | /* |
881 | * File operations | |
882 | */ | |
1f923a42 | 883 | static int vim2m_open(struct file *file) |
96d8eab5 | 884 | { |
1f923a42 HV |
885 | struct vim2m_dev *dev = video_drvdata(file); |
886 | struct vim2m_ctx *ctx = NULL; | |
d3dd59c2 | 887 | struct v4l2_ctrl_handler *hdl; |
f4694039 | 888 | int rc = 0; |
96d8eab5 | 889 | |
f4694039 HV |
890 | if (mutex_lock_interruptible(&dev->dev_mutex)) |
891 | return -ERESTARTSYS; | |
56ed221f | 892 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
f4694039 HV |
893 | if (!ctx) { |
894 | rc = -ENOMEM; | |
895 | goto open_unlock; | |
896 | } | |
96d8eab5 | 897 | |
d3dd59c2 HV |
898 | v4l2_fh_init(&ctx->fh, video_devdata(file)); |
899 | file->private_data = &ctx->fh; | |
96d8eab5 | 900 | ctx->dev = dev; |
d3dd59c2 HV |
901 | hdl = &ctx->hdl; |
902 | v4l2_ctrl_handler_init(hdl, 4); | |
1f923a42 HV |
903 | v4l2_ctrl_new_std(hdl, &vim2m_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); |
904 | v4l2_ctrl_new_std(hdl, &vim2m_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); | |
905 | v4l2_ctrl_new_custom(hdl, &vim2m_ctrl_trans_time_msec, NULL); | |
906 | v4l2_ctrl_new_custom(hdl, &vim2m_ctrl_trans_num_bufs, NULL); | |
d3dd59c2 | 907 | if (hdl->error) { |
a7bd7756 | 908 | rc = hdl->error; |
d3dd59c2 | 909 | v4l2_ctrl_handler_free(hdl); |
7c13a4d6 | 910 | kfree(ctx); |
a7bd7756 | 911 | goto open_unlock; |
d3dd59c2 HV |
912 | } |
913 | ctx->fh.ctrl_handler = hdl; | |
914 | v4l2_ctrl_handler_setup(hdl); | |
96d8eab5 | 915 | |
9f4161a6 | 916 | ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0]; |
47556ffa HV |
917 | ctx->q_data[V4L2_M2M_SRC].width = 640; |
918 | ctx->q_data[V4L2_M2M_SRC].height = 480; | |
919 | ctx->q_data[V4L2_M2M_SRC].sizeimage = | |
920 | ctx->q_data[V4L2_M2M_SRC].width * | |
921 | ctx->q_data[V4L2_M2M_SRC].height * | |
922 | (ctx->q_data[V4L2_M2M_SRC].fmt->depth >> 3); | |
923 | ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC]; | |
924 | ctx->colorspace = V4L2_COLORSPACE_REC709; | |
9f4161a6 | 925 | |
20702ebc | 926 | ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); |
d80ee38c | 927 | |
20702ebc SN |
928 | if (IS_ERR(ctx->fh.m2m_ctx)) { |
929 | rc = PTR_ERR(ctx->fh.m2m_ctx); | |
16ee9bb1 | 930 | |
d3dd59c2 | 931 | v4l2_ctrl_handler_free(hdl); |
7c13a4d6 | 932 | v4l2_fh_exit(&ctx->fh); |
96d8eab5 | 933 | kfree(ctx); |
f4694039 | 934 | goto open_unlock; |
96d8eab5 PO |
935 | } |
936 | ||
d3dd59c2 | 937 | v4l2_fh_add(&ctx->fh); |
96d8eab5 PO |
938 | atomic_inc(&dev->num_inst); |
939 | ||
20702ebc SN |
940 | dprintk(dev, "Created instance: %p, m2m_ctx: %p\n", |
941 | ctx, ctx->fh.m2m_ctx); | |
96d8eab5 | 942 | |
f4694039 HV |
943 | open_unlock: |
944 | mutex_unlock(&dev->dev_mutex); | |
a7bd7756 | 945 | return rc; |
96d8eab5 PO |
946 | } |
947 | ||
1f923a42 | 948 | static int vim2m_release(struct file *file) |
96d8eab5 | 949 | { |
1f923a42 HV |
950 | struct vim2m_dev *dev = video_drvdata(file); |
951 | struct vim2m_ctx *ctx = file2ctx(file); | |
96d8eab5 PO |
952 | |
953 | dprintk(dev, "Releasing instance %p\n", ctx); | |
954 | ||
d3dd59c2 HV |
955 | v4l2_fh_del(&ctx->fh); |
956 | v4l2_fh_exit(&ctx->fh); | |
957 | v4l2_ctrl_handler_free(&ctx->hdl); | |
f4694039 | 958 | mutex_lock(&dev->dev_mutex); |
20702ebc | 959 | v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); |
f4694039 | 960 | mutex_unlock(&dev->dev_mutex); |
96d8eab5 PO |
961 | kfree(ctx); |
962 | ||
963 | atomic_dec(&dev->num_inst); | |
964 | ||
965 | return 0; | |
966 | } | |
967 | ||
1f923a42 | 968 | static const struct v4l2_file_operations vim2m_fops = { |
96d8eab5 | 969 | .owner = THIS_MODULE, |
1f923a42 HV |
970 | .open = vim2m_open, |
971 | .release = vim2m_release, | |
20702ebc | 972 | .poll = v4l2_m2m_fop_poll, |
07e80305 | 973 | .unlocked_ioctl = video_ioctl2, |
20702ebc | 974 | .mmap = v4l2_m2m_fop_mmap, |
96d8eab5 PO |
975 | }; |
976 | ||
1f923a42 | 977 | static struct video_device vim2m_videodev = { |
96d8eab5 | 978 | .name = MEM2MEM_NAME, |
954f340f | 979 | .vfl_dir = VFL_DIR_M2M, |
1f923a42 HV |
980 | .fops = &vim2m_fops, |
981 | .ioctl_ops = &vim2m_ioctl_ops, | |
96d8eab5 | 982 | .minor = -1, |
09365420 | 983 | .release = video_device_release_empty, |
96d8eab5 PO |
984 | }; |
985 | ||
986 | static struct v4l2_m2m_ops m2m_ops = { | |
987 | .device_run = device_run, | |
988 | .job_ready = job_ready, | |
989 | .job_abort = job_abort, | |
990 | }; | |
991 | ||
1f923a42 | 992 | static int vim2m_probe(struct platform_device *pdev) |
96d8eab5 | 993 | { |
1f923a42 | 994 | struct vim2m_dev *dev; |
96d8eab5 PO |
995 | struct video_device *vfd; |
996 | int ret; | |
997 | ||
38a7996c | 998 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); |
96d8eab5 PO |
999 | if (!dev) |
1000 | return -ENOMEM; | |
1001 | ||
1002 | spin_lock_init(&dev->irqlock); | |
1003 | ||
1004 | ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); | |
1005 | if (ret) | |
38a7996c | 1006 | return ret; |
96d8eab5 PO |
1007 | |
1008 | atomic_set(&dev->num_inst, 0); | |
1009 | mutex_init(&dev->dev_mutex); | |
1010 | ||
09365420 HV |
1011 | dev->vfd = vim2m_videodev; |
1012 | vfd = &dev->vfd; | |
07e80305 | 1013 | vfd->lock = &dev->dev_mutex; |
8f484d87 | 1014 | vfd->v4l2_dev = &dev->v4l2_dev; |
96d8eab5 PO |
1015 | |
1016 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); | |
1017 | if (ret) { | |
1018 | v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); | |
09365420 | 1019 | goto unreg_dev; |
96d8eab5 PO |
1020 | } |
1021 | ||
1022 | video_set_drvdata(vfd, dev); | |
1f923a42 | 1023 | snprintf(vfd->name, sizeof(vfd->name), "%s", vim2m_videodev.name); |
8f484d87 | 1024 | v4l2_info(&dev->v4l2_dev, |
96d8eab5 PO |
1025 | "Device registered as /dev/video%d\n", vfd->num); |
1026 | ||
1027 | setup_timer(&dev->timer, device_isr, (long)dev); | |
1028 | platform_set_drvdata(pdev, dev); | |
1029 | ||
1030 | dev->m2m_dev = v4l2_m2m_init(&m2m_ops); | |
1031 | if (IS_ERR(dev->m2m_dev)) { | |
1032 | v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); | |
1033 | ret = PTR_ERR(dev->m2m_dev); | |
1034 | goto err_m2m; | |
1035 | } | |
1036 | ||
1037 | return 0; | |
1038 | ||
1039 | err_m2m: | |
b7e13ef7 | 1040 | v4l2_m2m_release(dev->m2m_dev); |
09365420 | 1041 | video_unregister_device(&dev->vfd); |
96d8eab5 PO |
1042 | unreg_dev: |
1043 | v4l2_device_unregister(&dev->v4l2_dev); | |
96d8eab5 PO |
1044 | |
1045 | return ret; | |
1046 | } | |
1047 | ||
1f923a42 | 1048 | static int vim2m_remove(struct platform_device *pdev) |
96d8eab5 | 1049 | { |
1f923a42 | 1050 | struct vim2m_dev *dev = platform_get_drvdata(pdev); |
96d8eab5 | 1051 | |
1f923a42 | 1052 | v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME); |
96d8eab5 PO |
1053 | v4l2_m2m_release(dev->m2m_dev); |
1054 | del_timer_sync(&dev->timer); | |
09365420 | 1055 | video_unregister_device(&dev->vfd); |
96d8eab5 | 1056 | v4l2_device_unregister(&dev->v4l2_dev); |
96d8eab5 PO |
1057 | |
1058 | return 0; | |
1059 | } | |
1060 | ||
1f923a42 HV |
1061 | static struct platform_driver vim2m_pdrv = { |
1062 | .probe = vim2m_probe, | |
1063 | .remove = vim2m_remove, | |
96d8eab5 PO |
1064 | .driver = { |
1065 | .name = MEM2MEM_NAME, | |
96d8eab5 PO |
1066 | }, |
1067 | }; | |
1068 | ||
1f923a42 | 1069 | static void __exit vim2m_exit(void) |
96d8eab5 | 1070 | { |
1f923a42 HV |
1071 | platform_driver_unregister(&vim2m_pdrv); |
1072 | platform_device_unregister(&vim2m_pdev); | |
96d8eab5 PO |
1073 | } |
1074 | ||
1f923a42 | 1075 | static int __init vim2m_init(void) |
96d8eab5 PO |
1076 | { |
1077 | int ret; | |
1078 | ||
1f923a42 | 1079 | ret = platform_device_register(&vim2m_pdev); |
96d8eab5 PO |
1080 | if (ret) |
1081 | return ret; | |
1082 | ||
1f923a42 | 1083 | ret = platform_driver_register(&vim2m_pdrv); |
96d8eab5 | 1084 | if (ret) |
1f923a42 | 1085 | platform_device_unregister(&vim2m_pdev); |
96d8eab5 | 1086 | |
b20b51f0 | 1087 | return ret; |
96d8eab5 PO |
1088 | } |
1089 | ||
1f923a42 HV |
1090 | module_init(vim2m_init); |
1091 | module_exit(vim2m_exit); |