Commit | Line | Data |
---|---|---|
8f0755c0 JM |
1 | /* |
2 | * V4L2 deinterlacing support. | |
3 | * | |
4 | * Copyright (c) 2012 Vista Silicon S.L. | |
5 | * Javier Martin <javier.martin@vista-silicon.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the | |
10 | * License, or (at your option) any later version | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/dmaengine.h> | |
17 | #include <linux/platform_device.h> | |
18 | ||
19 | #include <media/v4l2-mem2mem.h> | |
20 | #include <media/v4l2-device.h> | |
21 | #include <media/v4l2-ioctl.h> | |
22 | #include <media/videobuf2-dma-contig.h> | |
23 | ||
24 | #define MEM2MEM_TEST_MODULE_NAME "mem2mem-deinterlace" | |
25 | ||
26 | MODULE_DESCRIPTION("mem2mem device which supports deinterlacing using dmaengine"); | |
27 | MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com"); | |
28 | MODULE_LICENSE("GPL"); | |
29 | MODULE_VERSION("0.0.1"); | |
30 | ||
20272409 | 31 | static bool debug; |
8f0755c0 JM |
32 | module_param(debug, bool, 0644); |
33 | ||
34 | /* Flags that indicate a format can be used for capture/output */ | |
35 | #define MEM2MEM_CAPTURE (1 << 0) | |
36 | #define MEM2MEM_OUTPUT (1 << 1) | |
37 | ||
38 | #define MEM2MEM_NAME "m2m-deinterlace" | |
39 | ||
40 | #define dprintk(dev, fmt, arg...) \ | |
41 | v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) | |
42 | ||
43 | struct deinterlace_fmt { | |
44 | char *name; | |
45 | u32 fourcc; | |
46 | /* Types the format can be used for */ | |
47 | u32 types; | |
48 | }; | |
49 | ||
50 | static struct deinterlace_fmt formats[] = { | |
51 | { | |
52 | .name = "YUV 4:2:0 Planar", | |
53 | .fourcc = V4L2_PIX_FMT_YUV420, | |
54 | .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, | |
55 | }, | |
56 | { | |
57 | .name = "YUYV 4:2:2", | |
58 | .fourcc = V4L2_PIX_FMT_YUYV, | |
59 | .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, | |
60 | }, | |
61 | }; | |
62 | ||
63 | #define NUM_FORMATS ARRAY_SIZE(formats) | |
64 | ||
65 | /* Per-queue, driver-specific private data */ | |
66 | struct deinterlace_q_data { | |
67 | unsigned int width; | |
68 | unsigned int height; | |
69 | unsigned int sizeimage; | |
70 | struct deinterlace_fmt *fmt; | |
71 | enum v4l2_field field; | |
72 | }; | |
73 | ||
74 | enum { | |
75 | V4L2_M2M_SRC = 0, | |
76 | V4L2_M2M_DST = 1, | |
77 | }; | |
78 | ||
79 | enum { | |
80 | YUV420_DMA_Y_ODD, | |
81 | YUV420_DMA_Y_EVEN, | |
82 | YUV420_DMA_U_ODD, | |
83 | YUV420_DMA_U_EVEN, | |
84 | YUV420_DMA_V_ODD, | |
85 | YUV420_DMA_V_EVEN, | |
86 | YUV420_DMA_Y_ODD_DOUBLING, | |
87 | YUV420_DMA_U_ODD_DOUBLING, | |
88 | YUV420_DMA_V_ODD_DOUBLING, | |
89 | YUYV_DMA_ODD, | |
90 | YUYV_DMA_EVEN, | |
91 | YUYV_DMA_EVEN_DOUBLING, | |
92 | }; | |
93 | ||
94 | /* Source and destination queue data */ | |
95 | static struct deinterlace_q_data q_data[2]; | |
96 | ||
97 | static struct deinterlace_q_data *get_q_data(enum v4l2_buf_type type) | |
98 | { | |
99 | switch (type) { | |
100 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
101 | return &q_data[V4L2_M2M_SRC]; | |
102 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
103 | return &q_data[V4L2_M2M_DST]; | |
104 | default: | |
105 | BUG(); | |
106 | } | |
107 | return NULL; | |
108 | } | |
109 | ||
110 | static struct deinterlace_fmt *find_format(struct v4l2_format *f) | |
111 | { | |
112 | struct deinterlace_fmt *fmt; | |
113 | unsigned int k; | |
114 | ||
115 | for (k = 0; k < NUM_FORMATS; k++) { | |
116 | fmt = &formats[k]; | |
117 | if ((fmt->types & f->type) && | |
118 | (fmt->fourcc == f->fmt.pix.pixelformat)) | |
119 | break; | |
120 | } | |
121 | ||
122 | if (k == NUM_FORMATS) | |
123 | return NULL; | |
124 | ||
125 | return &formats[k]; | |
126 | } | |
127 | ||
128 | struct deinterlace_dev { | |
129 | struct v4l2_device v4l2_dev; | |
130 | struct video_device *vfd; | |
131 | ||
132 | atomic_t busy; | |
133 | struct mutex dev_mutex; | |
134 | spinlock_t irqlock; | |
135 | ||
136 | struct dma_chan *dma_chan; | |
137 | ||
138 | struct v4l2_m2m_dev *m2m_dev; | |
139 | struct vb2_alloc_ctx *alloc_ctx; | |
140 | }; | |
141 | ||
142 | struct deinterlace_ctx { | |
143 | struct deinterlace_dev *dev; | |
144 | ||
145 | /* Abort requested by m2m */ | |
146 | int aborting; | |
147 | enum v4l2_colorspace colorspace; | |
148 | dma_cookie_t cookie; | |
149 | struct v4l2_m2m_ctx *m2m_ctx; | |
150 | struct dma_interleaved_template *xt; | |
151 | }; | |
152 | ||
153 | /* | |
154 | * mem2mem callbacks | |
155 | */ | |
156 | static int deinterlace_job_ready(void *priv) | |
157 | { | |
158 | struct deinterlace_ctx *ctx = priv; | |
159 | struct deinterlace_dev *pcdev = ctx->dev; | |
160 | ||
161 | if ((v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) > 0) | |
162 | && (v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx) > 0) | |
163 | && (atomic_read(&ctx->dev->busy) == 0)) { | |
164 | dprintk(pcdev, "Task ready\n"); | |
165 | return 1; | |
166 | } | |
167 | ||
168 | dprintk(pcdev, "Task not ready to run\n"); | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
173 | static void deinterlace_job_abort(void *priv) | |
174 | { | |
175 | struct deinterlace_ctx *ctx = priv; | |
176 | struct deinterlace_dev *pcdev = ctx->dev; | |
177 | ||
178 | ctx->aborting = 1; | |
179 | ||
180 | dprintk(pcdev, "Aborting task\n"); | |
181 | ||
182 | v4l2_m2m_job_finish(pcdev->m2m_dev, ctx->m2m_ctx); | |
183 | } | |
184 | ||
185 | static void deinterlace_lock(void *priv) | |
186 | { | |
187 | struct deinterlace_ctx *ctx = priv; | |
188 | struct deinterlace_dev *pcdev = ctx->dev; | |
189 | mutex_lock(&pcdev->dev_mutex); | |
190 | } | |
191 | ||
192 | static void deinterlace_unlock(void *priv) | |
193 | { | |
194 | struct deinterlace_ctx *ctx = priv; | |
195 | struct deinterlace_dev *pcdev = ctx->dev; | |
196 | mutex_unlock(&pcdev->dev_mutex); | |
197 | } | |
198 | ||
199 | static void dma_callback(void *data) | |
200 | { | |
201 | struct deinterlace_ctx *curr_ctx = data; | |
202 | struct deinterlace_dev *pcdev = curr_ctx->dev; | |
203 | struct vb2_buffer *src_vb, *dst_vb; | |
204 | ||
205 | atomic_set(&pcdev->busy, 0); | |
206 | ||
207 | src_vb = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx); | |
208 | dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx); | |
209 | ||
7f1e8f19 KD |
210 | src_vb->v4l2_buf.timestamp = dst_vb->v4l2_buf.timestamp; |
211 | src_vb->v4l2_buf.timecode = dst_vb->v4l2_buf.timecode; | |
212 | ||
8f0755c0 JM |
213 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); |
214 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); | |
215 | ||
216 | v4l2_m2m_job_finish(pcdev->m2m_dev, curr_ctx->m2m_ctx); | |
217 | ||
218 | dprintk(pcdev, "dma transfers completed.\n"); | |
219 | } | |
220 | ||
221 | static void deinterlace_issue_dma(struct deinterlace_ctx *ctx, int op, | |
222 | int do_callback) | |
223 | { | |
2869a318 | 224 | struct deinterlace_q_data *s_q_data; |
8f0755c0 JM |
225 | struct vb2_buffer *src_buf, *dst_buf; |
226 | struct deinterlace_dev *pcdev = ctx->dev; | |
227 | struct dma_chan *chan = pcdev->dma_chan; | |
228 | struct dma_device *dmadev = chan->device; | |
229 | struct dma_async_tx_descriptor *tx; | |
230 | unsigned int s_width, s_height; | |
2869a318 | 231 | unsigned int s_size; |
8f0755c0 JM |
232 | dma_addr_t p_in, p_out; |
233 | enum dma_ctrl_flags flags; | |
234 | ||
235 | src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); | |
236 | dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); | |
237 | ||
238 | s_q_data = get_q_data(V4L2_BUF_TYPE_VIDEO_OUTPUT); | |
239 | s_width = s_q_data->width; | |
240 | s_height = s_q_data->height; | |
241 | s_size = s_width * s_height; | |
242 | ||
8f0755c0 JM |
243 | p_in = (dma_addr_t)vb2_dma_contig_plane_dma_addr(src_buf, 0); |
244 | p_out = (dma_addr_t)vb2_dma_contig_plane_dma_addr(dst_buf, 0); | |
245 | if (!p_in || !p_out) { | |
246 | v4l2_err(&pcdev->v4l2_dev, | |
247 | "Acquiring kernel pointers to buffers failed\n"); | |
248 | return; | |
249 | } | |
250 | ||
251 | switch (op) { | |
252 | case YUV420_DMA_Y_ODD: | |
253 | ctx->xt->numf = s_height / 2; | |
254 | ctx->xt->sgl[0].size = s_width; | |
255 | ctx->xt->sgl[0].icg = s_width; | |
256 | ctx->xt->src_start = p_in; | |
257 | ctx->xt->dst_start = p_out; | |
258 | break; | |
259 | case YUV420_DMA_Y_EVEN: | |
260 | ctx->xt->numf = s_height / 2; | |
261 | ctx->xt->sgl[0].size = s_width; | |
262 | ctx->xt->sgl[0].icg = s_width; | |
263 | ctx->xt->src_start = p_in + s_size / 2; | |
264 | ctx->xt->dst_start = p_out + s_width; | |
265 | break; | |
266 | case YUV420_DMA_U_ODD: | |
267 | ctx->xt->numf = s_height / 4; | |
268 | ctx->xt->sgl[0].size = s_width / 2; | |
269 | ctx->xt->sgl[0].icg = s_width / 2; | |
270 | ctx->xt->src_start = p_in + s_size; | |
271 | ctx->xt->dst_start = p_out + s_size; | |
272 | break; | |
273 | case YUV420_DMA_U_EVEN: | |
274 | ctx->xt->numf = s_height / 4; | |
275 | ctx->xt->sgl[0].size = s_width / 2; | |
276 | ctx->xt->sgl[0].icg = s_width / 2; | |
277 | ctx->xt->src_start = p_in + (9 * s_size) / 8; | |
278 | ctx->xt->dst_start = p_out + s_size + s_width / 2; | |
279 | break; | |
280 | case YUV420_DMA_V_ODD: | |
281 | ctx->xt->numf = s_height / 4; | |
282 | ctx->xt->sgl[0].size = s_width / 2; | |
283 | ctx->xt->sgl[0].icg = s_width / 2; | |
284 | ctx->xt->src_start = p_in + (5 * s_size) / 4; | |
285 | ctx->xt->dst_start = p_out + (5 * s_size) / 4; | |
286 | break; | |
287 | case YUV420_DMA_V_EVEN: | |
288 | ctx->xt->numf = s_height / 4; | |
289 | ctx->xt->sgl[0].size = s_width / 2; | |
290 | ctx->xt->sgl[0].icg = s_width / 2; | |
291 | ctx->xt->src_start = p_in + (11 * s_size) / 8; | |
292 | ctx->xt->dst_start = p_out + (5 * s_size) / 4 + s_width / 2; | |
293 | break; | |
294 | case YUV420_DMA_Y_ODD_DOUBLING: | |
295 | ctx->xt->numf = s_height / 2; | |
296 | ctx->xt->sgl[0].size = s_width; | |
297 | ctx->xt->sgl[0].icg = s_width; | |
298 | ctx->xt->src_start = p_in; | |
299 | ctx->xt->dst_start = p_out + s_width; | |
300 | break; | |
301 | case YUV420_DMA_U_ODD_DOUBLING: | |
302 | ctx->xt->numf = s_height / 4; | |
303 | ctx->xt->sgl[0].size = s_width / 2; | |
304 | ctx->xt->sgl[0].icg = s_width / 2; | |
305 | ctx->xt->src_start = p_in + s_size; | |
306 | ctx->xt->dst_start = p_out + s_size + s_width / 2; | |
307 | break; | |
308 | case YUV420_DMA_V_ODD_DOUBLING: | |
309 | ctx->xt->numf = s_height / 4; | |
310 | ctx->xt->sgl[0].size = s_width / 2; | |
311 | ctx->xt->sgl[0].icg = s_width / 2; | |
312 | ctx->xt->src_start = p_in + (5 * s_size) / 4; | |
313 | ctx->xt->dst_start = p_out + (5 * s_size) / 4 + s_width / 2; | |
314 | break; | |
315 | case YUYV_DMA_ODD: | |
316 | ctx->xt->numf = s_height / 2; | |
317 | ctx->xt->sgl[0].size = s_width * 2; | |
318 | ctx->xt->sgl[0].icg = s_width * 2; | |
319 | ctx->xt->src_start = p_in; | |
320 | ctx->xt->dst_start = p_out; | |
321 | break; | |
322 | case YUYV_DMA_EVEN: | |
323 | ctx->xt->numf = s_height / 2; | |
324 | ctx->xt->sgl[0].size = s_width * 2; | |
325 | ctx->xt->sgl[0].icg = s_width * 2; | |
326 | ctx->xt->src_start = p_in + s_size; | |
327 | ctx->xt->dst_start = p_out + s_width * 2; | |
328 | break; | |
329 | case YUYV_DMA_EVEN_DOUBLING: | |
330 | default: | |
331 | ctx->xt->numf = s_height / 2; | |
332 | ctx->xt->sgl[0].size = s_width * 2; | |
333 | ctx->xt->sgl[0].icg = s_width * 2; | |
334 | ctx->xt->src_start = p_in; | |
335 | ctx->xt->dst_start = p_out + s_width * 2; | |
336 | break; | |
337 | } | |
338 | ||
339 | /* Common parameters for al transfers */ | |
340 | ctx->xt->frame_size = 1; | |
341 | ctx->xt->dir = DMA_MEM_TO_MEM; | |
342 | ctx->xt->src_sgl = false; | |
343 | ctx->xt->dst_sgl = true; | |
344 | flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT | | |
345 | DMA_COMPL_SKIP_DEST_UNMAP | DMA_COMPL_SKIP_SRC_UNMAP; | |
346 | ||
347 | tx = dmadev->device_prep_interleaved_dma(chan, ctx->xt, flags); | |
348 | if (tx == NULL) { | |
349 | v4l2_warn(&pcdev->v4l2_dev, "DMA interleaved prep error\n"); | |
350 | return; | |
351 | } | |
352 | ||
353 | if (do_callback) { | |
354 | tx->callback = dma_callback; | |
355 | tx->callback_param = ctx; | |
356 | } | |
357 | ||
358 | ctx->cookie = dmaengine_submit(tx); | |
359 | if (dma_submit_error(ctx->cookie)) { | |
360 | v4l2_warn(&pcdev->v4l2_dev, | |
361 | "DMA submit error %d with src=0x%x dst=0x%x len=0x%x\n", | |
84b3bd46 MCC |
362 | ctx->cookie, (unsigned)p_in, (unsigned)p_out, |
363 | s_size * 3/2); | |
8f0755c0 JM |
364 | return; |
365 | } | |
366 | ||
367 | dma_async_issue_pending(chan); | |
368 | } | |
369 | ||
370 | static void deinterlace_device_run(void *priv) | |
371 | { | |
372 | struct deinterlace_ctx *ctx = priv; | |
373 | struct deinterlace_q_data *dst_q_data; | |
374 | ||
375 | atomic_set(&ctx->dev->busy, 1); | |
376 | ||
377 | dprintk(ctx->dev, "%s: DMA try issue.\n", __func__); | |
378 | ||
379 | dst_q_data = get_q_data(V4L2_BUF_TYPE_VIDEO_CAPTURE); | |
380 | ||
381 | /* | |
382 | * 4 possible field conversions are possible at the moment: | |
383 | * V4L2_FIELD_SEQ_TB --> V4L2_FIELD_INTERLACED_TB: | |
384 | * two separate fields in the same input buffer are interlaced | |
385 | * in the output buffer using weaving. Top field comes first. | |
386 | * V4L2_FIELD_SEQ_TB --> V4L2_FIELD_NONE: | |
387 | * top field from the input buffer is copied to the output buffer | |
388 | * using line doubling. Bottom field from the input buffer is discarded. | |
389 | * V4L2_FIELD_SEQ_BT --> V4L2_FIELD_INTERLACED_BT: | |
390 | * two separate fields in the same input buffer are interlaced | |
391 | * in the output buffer using weaving. Bottom field comes first. | |
392 | * V4L2_FIELD_SEQ_BT --> V4L2_FIELD_NONE: | |
393 | * bottom field from the input buffer is copied to the output buffer | |
394 | * using line doubling. Top field from the input buffer is discarded. | |
395 | */ | |
396 | switch (dst_q_data->fmt->fourcc) { | |
397 | case V4L2_PIX_FMT_YUV420: | |
398 | switch (dst_q_data->field) { | |
399 | case V4L2_FIELD_INTERLACED_TB: | |
400 | case V4L2_FIELD_INTERLACED_BT: | |
401 | dprintk(ctx->dev, "%s: yuv420 interlaced tb.\n", | |
402 | __func__); | |
403 | deinterlace_issue_dma(ctx, YUV420_DMA_Y_ODD, 0); | |
404 | deinterlace_issue_dma(ctx, YUV420_DMA_Y_EVEN, 0); | |
405 | deinterlace_issue_dma(ctx, YUV420_DMA_U_ODD, 0); | |
406 | deinterlace_issue_dma(ctx, YUV420_DMA_U_EVEN, 0); | |
407 | deinterlace_issue_dma(ctx, YUV420_DMA_V_ODD, 0); | |
408 | deinterlace_issue_dma(ctx, YUV420_DMA_V_EVEN, 1); | |
409 | break; | |
410 | case V4L2_FIELD_NONE: | |
411 | default: | |
412 | dprintk(ctx->dev, "%s: yuv420 interlaced line doubling.\n", | |
413 | __func__); | |
414 | deinterlace_issue_dma(ctx, YUV420_DMA_Y_ODD, 0); | |
415 | deinterlace_issue_dma(ctx, YUV420_DMA_Y_ODD_DOUBLING, 0); | |
416 | deinterlace_issue_dma(ctx, YUV420_DMA_U_ODD, 0); | |
417 | deinterlace_issue_dma(ctx, YUV420_DMA_U_ODD_DOUBLING, 0); | |
418 | deinterlace_issue_dma(ctx, YUV420_DMA_V_ODD, 0); | |
419 | deinterlace_issue_dma(ctx, YUV420_DMA_V_ODD_DOUBLING, 1); | |
420 | break; | |
421 | } | |
422 | break; | |
423 | case V4L2_PIX_FMT_YUYV: | |
424 | default: | |
425 | switch (dst_q_data->field) { | |
426 | case V4L2_FIELD_INTERLACED_TB: | |
427 | case V4L2_FIELD_INTERLACED_BT: | |
428 | dprintk(ctx->dev, "%s: yuyv interlaced_tb.\n", | |
429 | __func__); | |
430 | deinterlace_issue_dma(ctx, YUYV_DMA_ODD, 0); | |
431 | deinterlace_issue_dma(ctx, YUYV_DMA_EVEN, 1); | |
432 | break; | |
433 | case V4L2_FIELD_NONE: | |
434 | default: | |
435 | dprintk(ctx->dev, "%s: yuyv interlaced line doubling.\n", | |
436 | __func__); | |
437 | deinterlace_issue_dma(ctx, YUYV_DMA_ODD, 0); | |
438 | deinterlace_issue_dma(ctx, YUYV_DMA_EVEN_DOUBLING, 1); | |
439 | break; | |
440 | } | |
441 | break; | |
442 | } | |
443 | ||
444 | dprintk(ctx->dev, "%s: DMA issue done.\n", __func__); | |
445 | } | |
446 | ||
447 | /* | |
448 | * video ioctls | |
449 | */ | |
450 | static int vidioc_querycap(struct file *file, void *priv, | |
451 | struct v4l2_capability *cap) | |
452 | { | |
453 | strlcpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver)); | |
454 | strlcpy(cap->card, MEM2MEM_NAME, sizeof(cap->card)); | |
455 | strlcpy(cap->bus_info, MEM2MEM_NAME, sizeof(cap->card)); | |
4703d356 SN |
456 | /* |
457 | * This is only a mem-to-mem video device. The capture and output | |
458 | * device capability flags are left only for backward compatibility | |
459 | * and are scheduled for removal. | |
460 | */ | |
461 | cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT | | |
462 | V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; | |
8f0755c0 JM |
463 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) | |
469 | { | |
470 | int i, num; | |
471 | struct deinterlace_fmt *fmt; | |
472 | ||
473 | num = 0; | |
474 | ||
475 | for (i = 0; i < NUM_FORMATS; ++i) { | |
476 | if (formats[i].types & type) { | |
477 | /* index-th format of type type found ? */ | |
478 | if (num == f->index) | |
479 | break; | |
480 | /* Correct type but haven't reached our index yet, | |
481 | * just increment per-type index */ | |
482 | ++num; | |
483 | } | |
484 | } | |
485 | ||
486 | if (i < NUM_FORMATS) { | |
487 | /* Format found */ | |
488 | fmt = &formats[i]; | |
489 | strlcpy(f->description, fmt->name, sizeof(f->description)); | |
490 | f->pixelformat = fmt->fourcc; | |
491 | return 0; | |
492 | } | |
493 | ||
494 | /* Format not found */ | |
495 | return -EINVAL; | |
496 | } | |
497 | ||
498 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
499 | struct v4l2_fmtdesc *f) | |
500 | { | |
501 | return enum_fmt(f, MEM2MEM_CAPTURE); | |
502 | } | |
503 | ||
504 | static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, | |
505 | struct v4l2_fmtdesc *f) | |
506 | { | |
507 | return enum_fmt(f, MEM2MEM_OUTPUT); | |
508 | } | |
509 | ||
510 | static int vidioc_g_fmt(struct deinterlace_ctx *ctx, struct v4l2_format *f) | |
511 | { | |
512 | struct vb2_queue *vq; | |
513 | struct deinterlace_q_data *q_data; | |
514 | ||
515 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
516 | if (!vq) | |
517 | return -EINVAL; | |
518 | ||
519 | q_data = get_q_data(f->type); | |
520 | ||
521 | f->fmt.pix.width = q_data->width; | |
522 | f->fmt.pix.height = q_data->height; | |
523 | f->fmt.pix.field = q_data->field; | |
524 | f->fmt.pix.pixelformat = q_data->fmt->fourcc; | |
525 | ||
526 | switch (q_data->fmt->fourcc) { | |
527 | case V4L2_PIX_FMT_YUV420: | |
528 | f->fmt.pix.bytesperline = q_data->width * 3 / 2; | |
529 | break; | |
530 | case V4L2_PIX_FMT_YUYV: | |
531 | default: | |
532 | f->fmt.pix.bytesperline = q_data->width * 2; | |
533 | } | |
534 | ||
535 | f->fmt.pix.sizeimage = q_data->sizeimage; | |
536 | f->fmt.pix.colorspace = ctx->colorspace; | |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
541 | static int vidioc_g_fmt_vid_out(struct file *file, void *priv, | |
542 | struct v4l2_format *f) | |
543 | { | |
544 | return vidioc_g_fmt(priv, f); | |
545 | } | |
546 | ||
547 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
548 | struct v4l2_format *f) | |
549 | { | |
550 | return vidioc_g_fmt(priv, f); | |
551 | } | |
552 | ||
553 | static int vidioc_try_fmt(struct v4l2_format *f, struct deinterlace_fmt *fmt) | |
554 | { | |
555 | switch (f->fmt.pix.pixelformat) { | |
556 | case V4L2_PIX_FMT_YUV420: | |
557 | f->fmt.pix.bytesperline = f->fmt.pix.width * 3 / 2; | |
558 | break; | |
559 | case V4L2_PIX_FMT_YUYV: | |
560 | default: | |
561 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; | |
562 | } | |
563 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
569 | struct v4l2_format *f) | |
570 | { | |
571 | struct deinterlace_fmt *fmt; | |
572 | struct deinterlace_ctx *ctx = priv; | |
573 | ||
574 | fmt = find_format(f); | |
575 | if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) | |
576 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420; | |
577 | ||
578 | f->fmt.pix.colorspace = ctx->colorspace; | |
579 | ||
580 | if (f->fmt.pix.field != V4L2_FIELD_INTERLACED_TB && | |
581 | f->fmt.pix.field != V4L2_FIELD_INTERLACED_BT && | |
582 | f->fmt.pix.field != V4L2_FIELD_NONE) | |
583 | f->fmt.pix.field = V4L2_FIELD_INTERLACED_TB; | |
584 | ||
585 | return vidioc_try_fmt(f, fmt); | |
586 | } | |
587 | ||
588 | static int vidioc_try_fmt_vid_out(struct file *file, void *priv, | |
589 | struct v4l2_format *f) | |
590 | { | |
591 | struct deinterlace_fmt *fmt; | |
592 | ||
593 | fmt = find_format(f); | |
594 | if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) | |
595 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420; | |
596 | ||
597 | if (!f->fmt.pix.colorspace) | |
598 | f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; | |
599 | ||
600 | if (f->fmt.pix.field != V4L2_FIELD_SEQ_TB && | |
601 | f->fmt.pix.field != V4L2_FIELD_SEQ_BT) | |
602 | f->fmt.pix.field = V4L2_FIELD_SEQ_TB; | |
603 | ||
604 | return vidioc_try_fmt(f, fmt); | |
605 | } | |
606 | ||
607 | static int vidioc_s_fmt(struct deinterlace_ctx *ctx, struct v4l2_format *f) | |
608 | { | |
609 | struct deinterlace_q_data *q_data; | |
610 | struct vb2_queue *vq; | |
611 | ||
612 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
613 | if (!vq) | |
614 | return -EINVAL; | |
615 | ||
616 | q_data = get_q_data(f->type); | |
617 | if (!q_data) | |
618 | return -EINVAL; | |
619 | ||
620 | if (vb2_is_busy(vq)) { | |
621 | v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); | |
622 | return -EBUSY; | |
623 | } | |
624 | ||
625 | q_data->fmt = find_format(f); | |
626 | if (!q_data->fmt) { | |
627 | v4l2_err(&ctx->dev->v4l2_dev, | |
628 | "Couldn't set format type %d, wxh: %dx%d. fmt: %d, field: %d\n", | |
629 | f->type, f->fmt.pix.width, f->fmt.pix.height, | |
630 | f->fmt.pix.pixelformat, f->fmt.pix.field); | |
631 | return -EINVAL; | |
632 | } | |
633 | ||
634 | q_data->width = f->fmt.pix.width; | |
635 | q_data->height = f->fmt.pix.height; | |
636 | q_data->field = f->fmt.pix.field; | |
637 | ||
638 | switch (f->fmt.pix.pixelformat) { | |
639 | case V4L2_PIX_FMT_YUV420: | |
640 | f->fmt.pix.bytesperline = f->fmt.pix.width * 3 / 2; | |
641 | q_data->sizeimage = (q_data->width * q_data->height * 3) / 2; | |
642 | break; | |
643 | case V4L2_PIX_FMT_YUYV: | |
644 | default: | |
645 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; | |
646 | q_data->sizeimage = q_data->width * q_data->height * 2; | |
647 | } | |
648 | ||
649 | dprintk(ctx->dev, | |
650 | "Setting format for type %d, wxh: %dx%d, fmt: %d, field: %d\n", | |
651 | f->type, q_data->width, q_data->height, q_data->fmt->fourcc, | |
652 | q_data->field); | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
658 | struct v4l2_format *f) | |
659 | { | |
660 | int ret; | |
661 | ||
662 | ret = vidioc_try_fmt_vid_cap(file, priv, f); | |
663 | if (ret) | |
664 | return ret; | |
665 | return vidioc_s_fmt(priv, f); | |
666 | } | |
667 | ||
668 | static int vidioc_s_fmt_vid_out(struct file *file, void *priv, | |
669 | struct v4l2_format *f) | |
670 | { | |
671 | struct deinterlace_ctx *ctx = priv; | |
672 | int ret; | |
673 | ||
674 | ret = vidioc_try_fmt_vid_out(file, priv, f); | |
675 | if (ret) | |
676 | return ret; | |
677 | ||
678 | ret = vidioc_s_fmt(priv, f); | |
679 | if (!ret) | |
680 | ctx->colorspace = f->fmt.pix.colorspace; | |
681 | ||
682 | return ret; | |
683 | } | |
684 | ||
685 | static int vidioc_reqbufs(struct file *file, void *priv, | |
686 | struct v4l2_requestbuffers *reqbufs) | |
687 | { | |
688 | struct deinterlace_ctx *ctx = priv; | |
689 | ||
690 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); | |
691 | } | |
692 | ||
693 | static int vidioc_querybuf(struct file *file, void *priv, | |
694 | struct v4l2_buffer *buf) | |
695 | { | |
696 | struct deinterlace_ctx *ctx = priv; | |
697 | ||
698 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); | |
699 | } | |
700 | ||
701 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
702 | { | |
703 | struct deinterlace_ctx *ctx = priv; | |
704 | ||
705 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); | |
706 | } | |
707 | ||
708 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
709 | { | |
710 | struct deinterlace_ctx *ctx = priv; | |
711 | ||
712 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); | |
713 | } | |
714 | ||
715 | static int vidioc_streamon(struct file *file, void *priv, | |
716 | enum v4l2_buf_type type) | |
717 | { | |
718 | struct deinterlace_q_data *s_q_data, *d_q_data; | |
719 | struct deinterlace_ctx *ctx = priv; | |
720 | ||
721 | s_q_data = get_q_data(V4L2_BUF_TYPE_VIDEO_OUTPUT); | |
722 | d_q_data = get_q_data(V4L2_BUF_TYPE_VIDEO_CAPTURE); | |
723 | ||
724 | /* Check that src and dst queues have the same pix format */ | |
725 | if (s_q_data->fmt->fourcc != d_q_data->fmt->fourcc) { | |
726 | v4l2_err(&ctx->dev->v4l2_dev, | |
727 | "src and dst formats don't match.\n"); | |
728 | return -EINVAL; | |
729 | } | |
730 | ||
731 | /* Check that input and output deinterlacing types are compatible */ | |
732 | switch (s_q_data->field) { | |
733 | case V4L2_FIELD_SEQ_BT: | |
734 | if (d_q_data->field != V4L2_FIELD_NONE && | |
735 | d_q_data->field != V4L2_FIELD_INTERLACED_BT) { | |
736 | v4l2_err(&ctx->dev->v4l2_dev, | |
737 | "src and dst field conversion [(%d)->(%d)] not supported.\n", | |
738 | s_q_data->field, d_q_data->field); | |
739 | return -EINVAL; | |
740 | } | |
741 | break; | |
742 | case V4L2_FIELD_SEQ_TB: | |
743 | if (d_q_data->field != V4L2_FIELD_NONE && | |
744 | d_q_data->field != V4L2_FIELD_INTERLACED_TB) { | |
745 | v4l2_err(&ctx->dev->v4l2_dev, | |
746 | "src and dst field conversion [(%d)->(%d)] not supported.\n", | |
747 | s_q_data->field, d_q_data->field); | |
748 | return -EINVAL; | |
749 | } | |
750 | break; | |
751 | default: | |
752 | return -EINVAL; | |
753 | } | |
754 | ||
755 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); | |
756 | } | |
757 | ||
758 | static int vidioc_streamoff(struct file *file, void *priv, | |
759 | enum v4l2_buf_type type) | |
760 | { | |
761 | struct deinterlace_ctx *ctx = priv; | |
762 | ||
763 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); | |
764 | } | |
765 | ||
766 | static const struct v4l2_ioctl_ops deinterlace_ioctl_ops = { | |
767 | .vidioc_querycap = vidioc_querycap, | |
768 | ||
769 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
770 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
771 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
772 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
773 | ||
774 | .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, | |
775 | .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, | |
776 | .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, | |
777 | .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, | |
778 | ||
779 | .vidioc_reqbufs = vidioc_reqbufs, | |
780 | .vidioc_querybuf = vidioc_querybuf, | |
781 | ||
782 | .vidioc_qbuf = vidioc_qbuf, | |
783 | .vidioc_dqbuf = vidioc_dqbuf, | |
784 | ||
785 | .vidioc_streamon = vidioc_streamon, | |
786 | .vidioc_streamoff = vidioc_streamoff, | |
787 | }; | |
788 | ||
789 | ||
790 | /* | |
791 | * Queue operations | |
792 | */ | |
793 | struct vb2_dc_conf { | |
794 | struct device *dev; | |
795 | }; | |
796 | ||
797 | static int deinterlace_queue_setup(struct vb2_queue *vq, | |
798 | const struct v4l2_format *fmt, | |
799 | unsigned int *nbuffers, unsigned int *nplanes, | |
800 | unsigned int sizes[], void *alloc_ctxs[]) | |
801 | { | |
802 | struct deinterlace_ctx *ctx = vb2_get_drv_priv(vq); | |
803 | struct deinterlace_q_data *q_data; | |
804 | unsigned int size, count = *nbuffers; | |
805 | ||
806 | q_data = get_q_data(vq->type); | |
807 | ||
808 | switch (q_data->fmt->fourcc) { | |
809 | case V4L2_PIX_FMT_YUV420: | |
810 | size = q_data->width * q_data->height * 3 / 2; | |
811 | break; | |
812 | case V4L2_PIX_FMT_YUYV: | |
813 | default: | |
814 | size = q_data->width * q_data->height * 2; | |
815 | } | |
816 | ||
817 | *nplanes = 1; | |
818 | *nbuffers = count; | |
819 | sizes[0] = size; | |
820 | ||
821 | alloc_ctxs[0] = ctx->dev->alloc_ctx; | |
822 | ||
823 | dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); | |
824 | ||
825 | return 0; | |
826 | } | |
827 | ||
828 | static int deinterlace_buf_prepare(struct vb2_buffer *vb) | |
829 | { | |
830 | struct deinterlace_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); | |
831 | struct deinterlace_q_data *q_data; | |
832 | ||
833 | dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); | |
834 | ||
835 | q_data = get_q_data(vb->vb2_queue->type); | |
836 | ||
837 | if (vb2_plane_size(vb, 0) < q_data->sizeimage) { | |
838 | dprintk(ctx->dev, "%s data will not fit into plane (%lu < %lu)\n", | |
839 | __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); | |
840 | return -EINVAL; | |
841 | } | |
842 | ||
843 | vb2_set_plane_payload(vb, 0, q_data->sizeimage); | |
844 | ||
845 | return 0; | |
846 | } | |
847 | ||
848 | static void deinterlace_buf_queue(struct vb2_buffer *vb) | |
849 | { | |
850 | struct deinterlace_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); | |
851 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); | |
852 | } | |
853 | ||
854 | static struct vb2_ops deinterlace_qops = { | |
855 | .queue_setup = deinterlace_queue_setup, | |
856 | .buf_prepare = deinterlace_buf_prepare, | |
857 | .buf_queue = deinterlace_buf_queue, | |
858 | }; | |
859 | ||
860 | static int queue_init(void *priv, struct vb2_queue *src_vq, | |
861 | struct vb2_queue *dst_vq) | |
862 | { | |
863 | struct deinterlace_ctx *ctx = priv; | |
864 | int ret; | |
865 | ||
8f0755c0 JM |
866 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
867 | src_vq->io_modes = VB2_MMAP | VB2_USERPTR; | |
868 | src_vq->drv_priv = ctx; | |
869 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
870 | src_vq->ops = &deinterlace_qops; | |
871 | src_vq->mem_ops = &vb2_dma_contig_memops; | |
7f1e8f19 | 872 | src_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
8f0755c0 JM |
873 | q_data[V4L2_M2M_SRC].fmt = &formats[0]; |
874 | q_data[V4L2_M2M_SRC].width = 640; | |
875 | q_data[V4L2_M2M_SRC].height = 480; | |
876 | q_data[V4L2_M2M_SRC].sizeimage = (640 * 480 * 3) / 2; | |
877 | q_data[V4L2_M2M_SRC].field = V4L2_FIELD_SEQ_TB; | |
878 | ||
879 | ret = vb2_queue_init(src_vq); | |
880 | if (ret) | |
881 | return ret; | |
882 | ||
8f0755c0 JM |
883 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
884 | dst_vq->io_modes = VB2_MMAP | VB2_USERPTR; | |
885 | dst_vq->drv_priv = ctx; | |
886 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
887 | dst_vq->ops = &deinterlace_qops; | |
888 | dst_vq->mem_ops = &vb2_dma_contig_memops; | |
7f1e8f19 | 889 | dst_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
8f0755c0 JM |
890 | q_data[V4L2_M2M_DST].fmt = &formats[0]; |
891 | q_data[V4L2_M2M_DST].width = 640; | |
892 | q_data[V4L2_M2M_DST].height = 480; | |
893 | q_data[V4L2_M2M_DST].sizeimage = (640 * 480 * 3) / 2; | |
894 | q_data[V4L2_M2M_SRC].field = V4L2_FIELD_INTERLACED_TB; | |
895 | ||
896 | return vb2_queue_init(dst_vq); | |
897 | } | |
898 | ||
899 | /* | |
900 | * File operations | |
901 | */ | |
902 | static int deinterlace_open(struct file *file) | |
903 | { | |
904 | struct deinterlace_dev *pcdev = video_drvdata(file); | |
905 | struct deinterlace_ctx *ctx = NULL; | |
906 | ||
907 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); | |
908 | if (!ctx) | |
909 | return -ENOMEM; | |
910 | ||
911 | file->private_data = ctx; | |
912 | ctx->dev = pcdev; | |
913 | ||
914 | ctx->m2m_ctx = v4l2_m2m_ctx_init(pcdev->m2m_dev, ctx, &queue_init); | |
915 | if (IS_ERR(ctx->m2m_ctx)) { | |
916 | int ret = PTR_ERR(ctx->m2m_ctx); | |
917 | ||
918 | kfree(ctx); | |
919 | return ret; | |
920 | } | |
921 | ||
922 | ctx->xt = kzalloc(sizeof(struct dma_async_tx_descriptor) + | |
923 | sizeof(struct data_chunk), GFP_KERNEL); | |
924 | if (!ctx->xt) { | |
8f0755c0 | 925 | kfree(ctx); |
9a3323ae | 926 | return -ENOMEM; |
8f0755c0 JM |
927 | } |
928 | ||
929 | ctx->colorspace = V4L2_COLORSPACE_REC709; | |
930 | ||
931 | dprintk(pcdev, "Created instance %p, m2m_ctx: %p\n", ctx, ctx->m2m_ctx); | |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
936 | static int deinterlace_release(struct file *file) | |
937 | { | |
938 | struct deinterlace_dev *pcdev = video_drvdata(file); | |
939 | struct deinterlace_ctx *ctx = file->private_data; | |
940 | ||
941 | dprintk(pcdev, "Releasing instance %p\n", ctx); | |
942 | ||
943 | v4l2_m2m_ctx_release(ctx->m2m_ctx); | |
944 | kfree(ctx->xt); | |
945 | kfree(ctx); | |
946 | ||
947 | return 0; | |
948 | } | |
949 | ||
950 | static unsigned int deinterlace_poll(struct file *file, | |
951 | struct poll_table_struct *wait) | |
952 | { | |
953 | struct deinterlace_ctx *ctx = file->private_data; | |
954 | int ret; | |
955 | ||
956 | deinterlace_lock(ctx); | |
957 | ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait); | |
958 | deinterlace_unlock(ctx); | |
959 | ||
960 | return ret; | |
961 | } | |
962 | ||
963 | static int deinterlace_mmap(struct file *file, struct vm_area_struct *vma) | |
964 | { | |
965 | struct deinterlace_ctx *ctx = file->private_data; | |
966 | ||
967 | return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); | |
968 | } | |
969 | ||
970 | static const struct v4l2_file_operations deinterlace_fops = { | |
971 | .owner = THIS_MODULE, | |
972 | .open = deinterlace_open, | |
973 | .release = deinterlace_release, | |
974 | .poll = deinterlace_poll, | |
975 | .unlocked_ioctl = video_ioctl2, | |
976 | .mmap = deinterlace_mmap, | |
977 | }; | |
978 | ||
979 | static struct video_device deinterlace_videodev = { | |
980 | .name = MEM2MEM_NAME, | |
981 | .fops = &deinterlace_fops, | |
982 | .ioctl_ops = &deinterlace_ioctl_ops, | |
983 | .minor = -1, | |
984 | .release = video_device_release, | |
954f340f | 985 | .vfl_dir = VFL_DIR_M2M, |
8f0755c0 JM |
986 | }; |
987 | ||
988 | static struct v4l2_m2m_ops m2m_ops = { | |
989 | .device_run = deinterlace_device_run, | |
990 | .job_ready = deinterlace_job_ready, | |
991 | .job_abort = deinterlace_job_abort, | |
992 | .lock = deinterlace_lock, | |
993 | .unlock = deinterlace_unlock, | |
994 | }; | |
995 | ||
996 | static int deinterlace_probe(struct platform_device *pdev) | |
997 | { | |
998 | struct deinterlace_dev *pcdev; | |
999 | struct video_device *vfd; | |
1000 | dma_cap_mask_t mask; | |
1001 | int ret = 0; | |
1002 | ||
1003 | pcdev = kzalloc(sizeof *pcdev, GFP_KERNEL); | |
1004 | if (!pcdev) | |
1005 | return -ENOMEM; | |
1006 | ||
1007 | spin_lock_init(&pcdev->irqlock); | |
1008 | ||
1009 | dma_cap_zero(mask); | |
1010 | dma_cap_set(DMA_INTERLEAVE, mask); | |
1011 | pcdev->dma_chan = dma_request_channel(mask, NULL, pcdev); | |
1012 | if (!pcdev->dma_chan) | |
1013 | goto free_dev; | |
1014 | ||
1015 | if (!dma_has_cap(DMA_INTERLEAVE, pcdev->dma_chan->device->cap_mask)) { | |
1016 | v4l2_err(&pcdev->v4l2_dev, "DMA does not support INTERLEAVE\n"); | |
1017 | goto rel_dma; | |
1018 | } | |
1019 | ||
1020 | ret = v4l2_device_register(&pdev->dev, &pcdev->v4l2_dev); | |
1021 | if (ret) | |
1022 | goto rel_dma; | |
1023 | ||
1024 | atomic_set(&pcdev->busy, 0); | |
1025 | mutex_init(&pcdev->dev_mutex); | |
1026 | ||
1027 | vfd = video_device_alloc(); | |
1028 | if (!vfd) { | |
1029 | v4l2_err(&pcdev->v4l2_dev, "Failed to allocate video device\n"); | |
1030 | ret = -ENOMEM; | |
1031 | goto unreg_dev; | |
1032 | } | |
1033 | ||
1034 | *vfd = deinterlace_videodev; | |
1035 | vfd->lock = &pcdev->dev_mutex; | |
8f484d87 | 1036 | vfd->v4l2_dev = &pcdev->v4l2_dev; |
8f0755c0 JM |
1037 | |
1038 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); | |
1039 | if (ret) { | |
1040 | v4l2_err(&pcdev->v4l2_dev, "Failed to register video device\n"); | |
1041 | goto rel_vdev; | |
1042 | } | |
1043 | ||
1044 | video_set_drvdata(vfd, pcdev); | |
1045 | snprintf(vfd->name, sizeof(vfd->name), "%s", deinterlace_videodev.name); | |
1046 | pcdev->vfd = vfd; | |
1047 | v4l2_info(&pcdev->v4l2_dev, MEM2MEM_TEST_MODULE_NAME | |
1048 | " Device registered as /dev/video%d\n", vfd->num); | |
1049 | ||
1050 | platform_set_drvdata(pdev, pcdev); | |
1051 | ||
1052 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); | |
1053 | if (IS_ERR(pcdev->alloc_ctx)) { | |
1054 | v4l2_err(&pcdev->v4l2_dev, "Failed to alloc vb2 context\n"); | |
1055 | ret = PTR_ERR(pcdev->alloc_ctx); | |
1056 | goto err_ctx; | |
1057 | } | |
1058 | ||
1059 | pcdev->m2m_dev = v4l2_m2m_init(&m2m_ops); | |
1060 | if (IS_ERR(pcdev->m2m_dev)) { | |
1061 | v4l2_err(&pcdev->v4l2_dev, "Failed to init mem2mem device\n"); | |
1062 | ret = PTR_ERR(pcdev->m2m_dev); | |
1063 | goto err_m2m; | |
1064 | } | |
1065 | ||
1066 | return 0; | |
1067 | ||
1068 | v4l2_m2m_release(pcdev->m2m_dev); | |
1069 | err_m2m: | |
1070 | video_unregister_device(pcdev->vfd); | |
1071 | err_ctx: | |
1072 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); | |
1073 | rel_vdev: | |
1074 | video_device_release(vfd); | |
1075 | unreg_dev: | |
1076 | v4l2_device_unregister(&pcdev->v4l2_dev); | |
1077 | rel_dma: | |
1078 | dma_release_channel(pcdev->dma_chan); | |
1079 | free_dev: | |
1080 | kfree(pcdev); | |
1081 | ||
1082 | return ret; | |
1083 | } | |
1084 | ||
1085 | static int deinterlace_remove(struct platform_device *pdev) | |
1086 | { | |
1087 | struct deinterlace_dev *pcdev = | |
1088 | (struct deinterlace_dev *)platform_get_drvdata(pdev); | |
1089 | ||
1090 | v4l2_info(&pcdev->v4l2_dev, "Removing " MEM2MEM_TEST_MODULE_NAME); | |
1091 | v4l2_m2m_release(pcdev->m2m_dev); | |
1092 | video_unregister_device(pcdev->vfd); | |
1093 | v4l2_device_unregister(&pcdev->v4l2_dev); | |
1094 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); | |
1095 | dma_release_channel(pcdev->dma_chan); | |
1096 | kfree(pcdev); | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | ||
1101 | static struct platform_driver deinterlace_pdrv = { | |
1102 | .probe = deinterlace_probe, | |
1103 | .remove = deinterlace_remove, | |
1104 | .driver = { | |
1105 | .name = MEM2MEM_NAME, | |
1106 | .owner = THIS_MODULE, | |
1107 | }, | |
1108 | }; | |
50509e5c | 1109 | module_platform_driver(deinterlace_pdrv); |
8f0755c0 | 1110 |