Commit | Line | Data |
---|---|---|
ad614acb LP |
1 | /* |
2 | * ispvideo.c | |
3 | * | |
4 | * TI OMAP3 ISP - Generic video node | |
5 | * | |
6 | * Copyright (C) 2009-2010 Nokia Corporation | |
7 | * | |
8 | * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> | |
9 | * Sakari Ailus <sakari.ailus@iki.fi> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
ad614acb LP |
14 | */ |
15 | ||
16 | #include <asm/cacheflush.h> | |
17 | #include <linux/clk.h> | |
18 | #include <linux/mm.h> | |
025521f9 | 19 | #include <linux/module.h> |
ad614acb LP |
20 | #include <linux/pagemap.h> |
21 | #include <linux/scatterlist.h> | |
22 | #include <linux/sched.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/vmalloc.h> | |
506a47eb | 25 | |
ad614acb LP |
26 | #include <media/v4l2-dev.h> |
27 | #include <media/v4l2-ioctl.h> | |
506a47eb | 28 | #include <media/v4l2-mc.h> |
fbac1400 | 29 | #include <media/videobuf2-dma-contig.h> |
ad614acb LP |
30 | |
31 | #include "ispvideo.h" | |
32 | #include "isp.h" | |
33 | ||
34 | ||
35 | /* ----------------------------------------------------------------------------- | |
36 | * Helper functions | |
37 | */ | |
38 | ||
8f4f298e SA |
39 | /* |
40 | * NOTE: When adding new media bus codes, always remember to add | |
41 | * corresponding in-memory formats to the table below!!! | |
42 | */ | |
ad614acb | 43 | static struct isp_format_info formats[] = { |
27ffaeb0 BB |
44 | { MEDIA_BUS_FMT_Y8_1X8, MEDIA_BUS_FMT_Y8_1X8, |
45 | MEDIA_BUS_FMT_Y8_1X8, MEDIA_BUS_FMT_Y8_1X8, | |
1697e49a | 46 | V4L2_PIX_FMT_GREY, 8, 1, }, |
27ffaeb0 BB |
47 | { MEDIA_BUS_FMT_Y10_1X10, MEDIA_BUS_FMT_Y10_1X10, |
48 | MEDIA_BUS_FMT_Y10_1X10, MEDIA_BUS_FMT_Y8_1X8, | |
1697e49a | 49 | V4L2_PIX_FMT_Y10, 10, 2, }, |
27ffaeb0 BB |
50 | { MEDIA_BUS_FMT_Y12_1X12, MEDIA_BUS_FMT_Y10_1X10, |
51 | MEDIA_BUS_FMT_Y12_1X12, MEDIA_BUS_FMT_Y8_1X8, | |
1697e49a | 52 | V4L2_PIX_FMT_Y12, 12, 2, }, |
27ffaeb0 BB |
53 | { MEDIA_BUS_FMT_SBGGR8_1X8, MEDIA_BUS_FMT_SBGGR8_1X8, |
54 | MEDIA_BUS_FMT_SBGGR8_1X8, MEDIA_BUS_FMT_SBGGR8_1X8, | |
1697e49a | 55 | V4L2_PIX_FMT_SBGGR8, 8, 1, }, |
27ffaeb0 BB |
56 | { MEDIA_BUS_FMT_SGBRG8_1X8, MEDIA_BUS_FMT_SGBRG8_1X8, |
57 | MEDIA_BUS_FMT_SGBRG8_1X8, MEDIA_BUS_FMT_SGBRG8_1X8, | |
1697e49a | 58 | V4L2_PIX_FMT_SGBRG8, 8, 1, }, |
27ffaeb0 BB |
59 | { MEDIA_BUS_FMT_SGRBG8_1X8, MEDIA_BUS_FMT_SGRBG8_1X8, |
60 | MEDIA_BUS_FMT_SGRBG8_1X8, MEDIA_BUS_FMT_SGRBG8_1X8, | |
1697e49a | 61 | V4L2_PIX_FMT_SGRBG8, 8, 1, }, |
27ffaeb0 BB |
62 | { MEDIA_BUS_FMT_SRGGB8_1X8, MEDIA_BUS_FMT_SRGGB8_1X8, |
63 | MEDIA_BUS_FMT_SRGGB8_1X8, MEDIA_BUS_FMT_SRGGB8_1X8, | |
1697e49a | 64 | V4L2_PIX_FMT_SRGGB8, 8, 1, }, |
27ffaeb0 BB |
65 | { MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, |
66 | MEDIA_BUS_FMT_SBGGR10_1X10, 0, | |
1697e49a | 67 | V4L2_PIX_FMT_SBGGR10DPCM8, 8, 1, }, |
27ffaeb0 BB |
68 | { MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, |
69 | MEDIA_BUS_FMT_SGBRG10_1X10, 0, | |
1697e49a | 70 | V4L2_PIX_FMT_SGBRG10DPCM8, 8, 1, }, |
27ffaeb0 BB |
71 | { MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, |
72 | MEDIA_BUS_FMT_SGRBG10_1X10, 0, | |
1697e49a | 73 | V4L2_PIX_FMT_SGRBG10DPCM8, 8, 1, }, |
27ffaeb0 BB |
74 | { MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, |
75 | MEDIA_BUS_FMT_SRGGB10_1X10, 0, | |
1697e49a | 76 | V4L2_PIX_FMT_SRGGB10DPCM8, 8, 1, }, |
27ffaeb0 BB |
77 | { MEDIA_BUS_FMT_SBGGR10_1X10, MEDIA_BUS_FMT_SBGGR10_1X10, |
78 | MEDIA_BUS_FMT_SBGGR10_1X10, MEDIA_BUS_FMT_SBGGR8_1X8, | |
1697e49a | 79 | V4L2_PIX_FMT_SBGGR10, 10, 2, }, |
27ffaeb0 BB |
80 | { MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SGBRG10_1X10, |
81 | MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SGBRG8_1X8, | |
1697e49a | 82 | V4L2_PIX_FMT_SGBRG10, 10, 2, }, |
27ffaeb0 BB |
83 | { MEDIA_BUS_FMT_SGRBG10_1X10, MEDIA_BUS_FMT_SGRBG10_1X10, |
84 | MEDIA_BUS_FMT_SGRBG10_1X10, MEDIA_BUS_FMT_SGRBG8_1X8, | |
1697e49a | 85 | V4L2_PIX_FMT_SGRBG10, 10, 2, }, |
27ffaeb0 BB |
86 | { MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SRGGB10_1X10, |
87 | MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SRGGB8_1X8, | |
1697e49a | 88 | V4L2_PIX_FMT_SRGGB10, 10, 2, }, |
27ffaeb0 BB |
89 | { MEDIA_BUS_FMT_SBGGR12_1X12, MEDIA_BUS_FMT_SBGGR10_1X10, |
90 | MEDIA_BUS_FMT_SBGGR12_1X12, MEDIA_BUS_FMT_SBGGR8_1X8, | |
1697e49a | 91 | V4L2_PIX_FMT_SBGGR12, 12, 2, }, |
27ffaeb0 BB |
92 | { MEDIA_BUS_FMT_SGBRG12_1X12, MEDIA_BUS_FMT_SGBRG10_1X10, |
93 | MEDIA_BUS_FMT_SGBRG12_1X12, MEDIA_BUS_FMT_SGBRG8_1X8, | |
1697e49a | 94 | V4L2_PIX_FMT_SGBRG12, 12, 2, }, |
27ffaeb0 BB |
95 | { MEDIA_BUS_FMT_SGRBG12_1X12, MEDIA_BUS_FMT_SGRBG10_1X10, |
96 | MEDIA_BUS_FMT_SGRBG12_1X12, MEDIA_BUS_FMT_SGRBG8_1X8, | |
1697e49a | 97 | V4L2_PIX_FMT_SGRBG12, 12, 2, }, |
27ffaeb0 BB |
98 | { MEDIA_BUS_FMT_SRGGB12_1X12, MEDIA_BUS_FMT_SRGGB10_1X10, |
99 | MEDIA_BUS_FMT_SRGGB12_1X12, MEDIA_BUS_FMT_SRGGB8_1X8, | |
1697e49a | 100 | V4L2_PIX_FMT_SRGGB12, 12, 2, }, |
27ffaeb0 BB |
101 | { MEDIA_BUS_FMT_UYVY8_1X16, MEDIA_BUS_FMT_UYVY8_1X16, |
102 | MEDIA_BUS_FMT_UYVY8_1X16, 0, | |
1697e49a | 103 | V4L2_PIX_FMT_UYVY, 16, 2, }, |
27ffaeb0 BB |
104 | { MEDIA_BUS_FMT_YUYV8_1X16, MEDIA_BUS_FMT_YUYV8_1X16, |
105 | MEDIA_BUS_FMT_YUYV8_1X16, 0, | |
1697e49a | 106 | V4L2_PIX_FMT_YUYV, 16, 2, }, |
27ffaeb0 BB |
107 | { MEDIA_BUS_FMT_UYVY8_2X8, MEDIA_BUS_FMT_UYVY8_2X8, |
108 | MEDIA_BUS_FMT_UYVY8_2X8, 0, | |
0810fd9c | 109 | V4L2_PIX_FMT_UYVY, 8, 2, }, |
27ffaeb0 BB |
110 | { MEDIA_BUS_FMT_YUYV8_2X8, MEDIA_BUS_FMT_YUYV8_2X8, |
111 | MEDIA_BUS_FMT_YUYV8_2X8, 0, | |
0810fd9c | 112 | V4L2_PIX_FMT_YUYV, 8, 2, }, |
c51364ca LP |
113 | /* Empty entry to catch the unsupported pixel code (0) used by the CCDC |
114 | * module and avoid NULL pointer dereferences. | |
115 | */ | |
116 | { 0, } | |
ad614acb LP |
117 | }; |
118 | ||
27ffaeb0 | 119 | const struct isp_format_info *omap3isp_video_format_info(u32 code) |
ad614acb LP |
120 | { |
121 | unsigned int i; | |
122 | ||
123 | for (i = 0; i < ARRAY_SIZE(formats); ++i) { | |
124 | if (formats[i].code == code) | |
125 | return &formats[i]; | |
126 | } | |
127 | ||
128 | return NULL; | |
129 | } | |
130 | ||
131 | /* | |
132 | * isp_video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format | |
133 | * @video: ISP video instance | |
134 | * @mbus: v4l2_mbus_framefmt format (input) | |
135 | * @pix: v4l2_pix_format format (output) | |
136 | * | |
137 | * Fill the output pix structure with information from the input mbus format. | |
138 | * The bytesperline and sizeimage fields are computed from the requested bytes | |
139 | * per line value in the pix format and information from the video instance. | |
140 | * | |
141 | * Return the number of padding bytes at end of line. | |
142 | */ | |
143 | static unsigned int isp_video_mbus_to_pix(const struct isp_video *video, | |
144 | const struct v4l2_mbus_framefmt *mbus, | |
145 | struct v4l2_pix_format *pix) | |
146 | { | |
147 | unsigned int bpl = pix->bytesperline; | |
148 | unsigned int min_bpl; | |
149 | unsigned int i; | |
150 | ||
151 | memset(pix, 0, sizeof(*pix)); | |
152 | pix->width = mbus->width; | |
153 | pix->height = mbus->height; | |
154 | ||
155 | for (i = 0; i < ARRAY_SIZE(formats); ++i) { | |
156 | if (formats[i].code == mbus->code) | |
157 | break; | |
158 | } | |
159 | ||
160 | if (WARN_ON(i == ARRAY_SIZE(formats))) | |
161 | return 0; | |
162 | ||
1697e49a | 163 | min_bpl = pix->width * formats[i].bpp; |
ad614acb LP |
164 | |
165 | /* Clamp the requested bytes per line value. If the maximum bytes per | |
166 | * line value is zero, the module doesn't support user configurable line | |
167 | * sizes. Override the requested value with the minimum in that case. | |
168 | */ | |
169 | if (video->bpl_max) | |
170 | bpl = clamp(bpl, min_bpl, video->bpl_max); | |
171 | else | |
172 | bpl = min_bpl; | |
173 | ||
174 | if (!video->bpl_zero_padding || bpl != min_bpl) | |
175 | bpl = ALIGN(bpl, video->bpl_alignment); | |
176 | ||
177 | pix->pixelformat = formats[i].pixelformat; | |
178 | pix->bytesperline = bpl; | |
179 | pix->sizeimage = pix->bytesperline * pix->height; | |
180 | pix->colorspace = mbus->colorspace; | |
181 | pix->field = mbus->field; | |
182 | ||
183 | return bpl - min_bpl; | |
184 | } | |
185 | ||
186 | static void isp_video_pix_to_mbus(const struct v4l2_pix_format *pix, | |
187 | struct v4l2_mbus_framefmt *mbus) | |
188 | { | |
189 | unsigned int i; | |
190 | ||
191 | memset(mbus, 0, sizeof(*mbus)); | |
192 | mbus->width = pix->width; | |
193 | mbus->height = pix->height; | |
194 | ||
c3cd2574 LP |
195 | /* Skip the last format in the loop so that it will be selected if no |
196 | * match is found. | |
197 | */ | |
198 | for (i = 0; i < ARRAY_SIZE(formats) - 1; ++i) { | |
ad614acb LP |
199 | if (formats[i].pixelformat == pix->pixelformat) |
200 | break; | |
201 | } | |
202 | ||
ad614acb LP |
203 | mbus->code = formats[i].code; |
204 | mbus->colorspace = pix->colorspace; | |
205 | mbus->field = pix->field; | |
206 | } | |
207 | ||
208 | static struct v4l2_subdev * | |
209 | isp_video_remote_subdev(struct isp_video *video, u32 *pad) | |
210 | { | |
211 | struct media_pad *remote; | |
212 | ||
1bddf1b3 | 213 | remote = media_entity_remote_pad(&video->pad); |
ad614acb | 214 | |
3efdf62c | 215 | if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) |
ad614acb LP |
216 | return NULL; |
217 | ||
218 | if (pad) | |
219 | *pad = remote->index; | |
220 | ||
221 | return media_entity_to_v4l2_subdev(remote->entity); | |
222 | } | |
223 | ||
224 | /* Return a pointer to the ISP video instance at the far end of the pipeline. */ | |
ae5df813 SA |
225 | static int isp_video_get_graph_data(struct isp_video *video, |
226 | struct isp_pipeline *pipe) | |
ad614acb LP |
227 | { |
228 | struct media_entity_graph graph; | |
229 | struct media_entity *entity = &video->video.entity; | |
d10c9894 | 230 | struct media_device *mdev = entity->graph_obj.mdev; |
ad614acb | 231 | struct isp_video *far_end = NULL; |
28461451 | 232 | int ret; |
ad614acb LP |
233 | |
234 | mutex_lock(&mdev->graph_mutex); | |
28461451 SA |
235 | ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev); |
236 | if (ret) { | |
237 | mutex_unlock(&mdev->graph_mutex); | |
238 | return ret; | |
239 | } | |
240 | ||
ad614acb LP |
241 | media_entity_graph_walk_start(&graph, entity); |
242 | ||
243 | while ((entity = media_entity_graph_walk_next(&graph))) { | |
ae5df813 SA |
244 | struct isp_video *__video; |
245 | ||
17d3d405 | 246 | media_entity_enum_set(&pipe->ent_enum, entity); |
ae5df813 SA |
247 | |
248 | if (far_end != NULL) | |
249 | continue; | |
250 | ||
ad614acb LP |
251 | if (entity == &video->video.entity) |
252 | continue; | |
253 | ||
45b46879 | 254 | if (!is_media_entity_v4l2_video_device(entity)) |
ad614acb LP |
255 | continue; |
256 | ||
ae5df813 SA |
257 | __video = to_isp_video(media_entity_to_video_device(entity)); |
258 | if (__video->type != video->type) | |
259 | far_end = __video; | |
ad614acb LP |
260 | } |
261 | ||
262 | mutex_unlock(&mdev->graph_mutex); | |
ae5df813 | 263 | |
28461451 SA |
264 | media_entity_graph_walk_cleanup(&graph); |
265 | ||
ae5df813 SA |
266 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
267 | pipe->input = far_end; | |
268 | pipe->output = video; | |
269 | } else { | |
270 | if (far_end == NULL) | |
271 | return -EPIPE; | |
272 | ||
273 | pipe->input = video; | |
274 | pipe->output = far_end; | |
275 | } | |
276 | ||
277 | return 0; | |
ad614acb LP |
278 | } |
279 | ||
ad614acb LP |
280 | static int |
281 | __isp_video_get_format(struct isp_video *video, struct v4l2_format *format) | |
282 | { | |
283 | struct v4l2_subdev_format fmt; | |
284 | struct v4l2_subdev *subdev; | |
285 | u32 pad; | |
286 | int ret; | |
287 | ||
288 | subdev = isp_video_remote_subdev(video, &pad); | |
289 | if (subdev == NULL) | |
290 | return -EINVAL; | |
291 | ||
ad614acb LP |
292 | fmt.pad = pad; |
293 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
ad614acb | 294 | |
5264682a LP |
295 | mutex_lock(&video->mutex); |
296 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); | |
ad614acb LP |
297 | mutex_unlock(&video->mutex); |
298 | ||
299 | if (ret) | |
300 | return ret; | |
301 | ||
302 | format->type = video->type; | |
303 | return isp_video_mbus_to_pix(video, &fmt.format, &format->fmt.pix); | |
304 | } | |
305 | ||
306 | static int | |
307 | isp_video_check_format(struct isp_video *video, struct isp_video_fh *vfh) | |
308 | { | |
309 | struct v4l2_format format; | |
310 | int ret; | |
311 | ||
312 | memcpy(&format, &vfh->format, sizeof(format)); | |
313 | ret = __isp_video_get_format(video, &format); | |
314 | if (ret < 0) | |
315 | return ret; | |
316 | ||
317 | if (vfh->format.fmt.pix.pixelformat != format.fmt.pix.pixelformat || | |
318 | vfh->format.fmt.pix.height != format.fmt.pix.height || | |
319 | vfh->format.fmt.pix.width != format.fmt.pix.width || | |
320 | vfh->format.fmt.pix.bytesperline != format.fmt.pix.bytesperline || | |
f7abbe98 LP |
321 | vfh->format.fmt.pix.sizeimage != format.fmt.pix.sizeimage || |
322 | vfh->format.fmt.pix.field != format.fmt.pix.field) | |
ad614acb LP |
323 | return -EINVAL; |
324 | ||
f7abbe98 | 325 | return 0; |
ad614acb LP |
326 | } |
327 | ||
ad614acb LP |
328 | /* ----------------------------------------------------------------------------- |
329 | * Video queue operations | |
330 | */ | |
331 | ||
fbac1400 | 332 | static int isp_video_queue_setup(struct vb2_queue *queue, |
fbac1400 | 333 | unsigned int *count, unsigned int *num_planes, |
36c0f8b3 | 334 | unsigned int sizes[], struct device *alloc_devs[]) |
ad614acb | 335 | { |
fbac1400 | 336 | struct isp_video_fh *vfh = vb2_get_drv_priv(queue); |
ad614acb LP |
337 | struct isp_video *video = vfh->video; |
338 | ||
fbac1400 LP |
339 | *num_planes = 1; |
340 | ||
341 | sizes[0] = vfh->format.fmt.pix.sizeimage; | |
342 | if (sizes[0] == 0) | |
343 | return -EINVAL; | |
344 | ||
fbac1400 | 345 | *count = min(*count, video->capture_mem / PAGE_ALIGN(sizes[0])); |
ad614acb | 346 | |
fbac1400 | 347 | return 0; |
ad614acb LP |
348 | } |
349 | ||
fbac1400 | 350 | static int isp_video_buffer_prepare(struct vb2_buffer *buf) |
ad614acb | 351 | { |
2d700715 | 352 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(buf); |
fbac1400 | 353 | struct isp_video_fh *vfh = vb2_get_drv_priv(buf->vb2_queue); |
2d700715 | 354 | struct isp_buffer *buffer = to_isp_buffer(vbuf); |
ad614acb | 355 | struct isp_video *video = vfh->video; |
fbac1400 | 356 | dma_addr_t addr; |
ad614acb | 357 | |
661112cb LP |
358 | /* Refuse to prepare the buffer is the video node has registered an |
359 | * error. We don't need to take any lock here as the operation is | |
360 | * inherently racy. The authoritative check will be performed in the | |
361 | * queue handler, which can't return an error, this check is just a best | |
362 | * effort to notify userspace as early as possible. | |
363 | */ | |
364 | if (unlikely(video->error)) | |
365 | return -EIO; | |
366 | ||
fbac1400 LP |
367 | addr = vb2_dma_contig_plane_dma_addr(buf, 0); |
368 | if (!IS_ALIGNED(addr, 32)) { | |
369 | dev_dbg(video->isp->dev, | |
370 | "Buffer address must be aligned to 32 bytes boundary.\n"); | |
371 | return -EINVAL; | |
372 | } | |
373 | ||
2d700715 JS |
374 | vb2_set_plane_payload(&buffer->vb.vb2_buf, 0, |
375 | vfh->format.fmt.pix.sizeimage); | |
21d8582d | 376 | buffer->dma = addr; |
fbac1400 | 377 | |
ad614acb LP |
378 | return 0; |
379 | } | |
380 | ||
381 | /* | |
382 | * isp_video_buffer_queue - Add buffer to streaming queue | |
383 | * @buf: Video buffer | |
384 | * | |
385 | * In memory-to-memory mode, start streaming on the pipeline if buffers are | |
386 | * queued on both the input and the output, if the pipeline isn't already busy. | |
387 | * If the pipeline is busy, it will be restarted in the output module interrupt | |
388 | * handler. | |
389 | */ | |
fbac1400 | 390 | static void isp_video_buffer_queue(struct vb2_buffer *buf) |
ad614acb | 391 | { |
2d700715 | 392 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(buf); |
fbac1400 | 393 | struct isp_video_fh *vfh = vb2_get_drv_priv(buf->vb2_queue); |
2d700715 | 394 | struct isp_buffer *buffer = to_isp_buffer(vbuf); |
ad614acb LP |
395 | struct isp_video *video = vfh->video; |
396 | struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); | |
397 | enum isp_pipeline_state state; | |
398 | unsigned long flags; | |
399 | unsigned int empty; | |
400 | unsigned int start; | |
401 | ||
e8feb876 LP |
402 | spin_lock_irqsave(&video->irqlock, flags); |
403 | ||
661112cb | 404 | if (unlikely(video->error)) { |
2d700715 | 405 | vb2_buffer_done(&buffer->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
e8feb876 | 406 | spin_unlock_irqrestore(&video->irqlock, flags); |
661112cb LP |
407 | return; |
408 | } | |
409 | ||
ad614acb | 410 | empty = list_empty(&video->dmaqueue); |
eb2c00d2 | 411 | list_add_tail(&buffer->irqlist, &video->dmaqueue); |
ad614acb | 412 | |
e8feb876 LP |
413 | spin_unlock_irqrestore(&video->irqlock, flags); |
414 | ||
ad614acb LP |
415 | if (empty) { |
416 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
417 | state = ISP_PIPELINE_QUEUE_OUTPUT; | |
418 | else | |
419 | state = ISP_PIPELINE_QUEUE_INPUT; | |
420 | ||
421 | spin_lock_irqsave(&pipe->lock, flags); | |
422 | pipe->state |= state; | |
423 | video->ops->queue(video, buffer); | |
424 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_QUEUED; | |
425 | ||
426 | start = isp_pipeline_ready(pipe); | |
427 | if (start) | |
428 | pipe->state |= ISP_PIPELINE_STREAM; | |
429 | spin_unlock_irqrestore(&pipe->lock, flags); | |
430 | ||
431 | if (start) | |
432 | omap3isp_pipeline_set_stream(pipe, | |
433 | ISP_PIPELINE_STREAM_SINGLESHOT); | |
434 | } | |
435 | } | |
436 | ||
87e062d4 SA |
437 | /* |
438 | * omap3isp_video_return_buffers - Return all queued buffers to videobuf2 | |
439 | * @video: ISP video object | |
440 | * @state: new state for the returned buffers | |
441 | * | |
442 | * Return all buffers queued on the video node to videobuf2 in the given state. | |
443 | * The buffer state should be VB2_BUF_STATE_QUEUED if called due to an error | |
444 | * when starting the stream, or VB2_BUF_STATE_ERROR otherwise. | |
445 | * | |
446 | * The function must be called with the video irqlock held. | |
447 | */ | |
448 | static void omap3isp_video_return_buffers(struct isp_video *video, | |
449 | enum vb2_buffer_state state) | |
450 | { | |
451 | while (!list_empty(&video->dmaqueue)) { | |
452 | struct isp_buffer *buf; | |
453 | ||
454 | buf = list_first_entry(&video->dmaqueue, | |
455 | struct isp_buffer, irqlist); | |
456 | list_del(&buf->irqlist); | |
457 | vb2_buffer_done(&buf->vb.vb2_buf, state); | |
458 | } | |
459 | } | |
460 | ||
35c5f637 SA |
461 | static int isp_video_start_streaming(struct vb2_queue *queue, |
462 | unsigned int count) | |
463 | { | |
464 | struct isp_video_fh *vfh = vb2_get_drv_priv(queue); | |
465 | struct isp_video *video = vfh->video; | |
466 | struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); | |
467 | unsigned long flags; | |
468 | int ret; | |
469 | ||
470 | /* In sensor-to-memory mode, the stream can be started synchronously | |
471 | * to the stream on command. In memory-to-memory mode, it will be | |
472 | * started when buffers are queued on both the input and output. | |
473 | */ | |
474 | if (pipe->input) | |
475 | return 0; | |
476 | ||
477 | ret = omap3isp_pipeline_set_stream(pipe, | |
478 | ISP_PIPELINE_STREAM_CONTINUOUS); | |
87e062d4 SA |
479 | if (ret < 0) { |
480 | spin_lock_irqsave(&video->irqlock, flags); | |
481 | omap3isp_video_return_buffers(video, VB2_BUF_STATE_QUEUED); | |
482 | spin_unlock_irqrestore(&video->irqlock, flags); | |
35c5f637 | 483 | return ret; |
87e062d4 | 484 | } |
35c5f637 SA |
485 | |
486 | spin_lock_irqsave(&video->irqlock, flags); | |
487 | if (list_empty(&video->dmaqueue)) | |
488 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN; | |
489 | spin_unlock_irqrestore(&video->irqlock, flags); | |
490 | ||
491 | return 0; | |
492 | } | |
493 | ||
fbac1400 LP |
494 | static const struct vb2_ops isp_video_queue_ops = { |
495 | .queue_setup = isp_video_queue_setup, | |
496 | .buf_prepare = isp_video_buffer_prepare, | |
497 | .buf_queue = isp_video_buffer_queue, | |
35c5f637 | 498 | .start_streaming = isp_video_start_streaming, |
ad614acb LP |
499 | }; |
500 | ||
501 | /* | |
502 | * omap3isp_video_buffer_next - Complete the current buffer and return the next | |
503 | * @video: ISP video object | |
ad614acb | 504 | * |
fbac1400 LP |
505 | * Remove the current video buffer from the DMA queue and fill its timestamp and |
506 | * field count before handing it back to videobuf2. | |
ad614acb | 507 | * |
fbac1400 LP |
508 | * For capture video nodes the buffer state is set to VB2_BUF_STATE_DONE if no |
509 | * error has been flagged in the pipeline, or to VB2_BUF_STATE_ERROR otherwise. | |
510 | * For video output nodes the buffer state is always set to VB2_BUF_STATE_DONE. | |
ad614acb LP |
511 | * |
512 | * The DMA queue is expected to contain at least one buffer. | |
513 | * | |
514 | * Return a pointer to the next buffer in the DMA queue, or NULL if the queue is | |
515 | * empty. | |
516 | */ | |
875e2e3e | 517 | struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video) |
ad614acb LP |
518 | { |
519 | struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); | |
18ba53f5 | 520 | enum vb2_buffer_state vb_state; |
eb2c00d2 | 521 | struct isp_buffer *buf; |
ad614acb | 522 | unsigned long flags; |
ad614acb | 523 | |
e8feb876 | 524 | spin_lock_irqsave(&video->irqlock, flags); |
ad614acb | 525 | if (WARN_ON(list_empty(&video->dmaqueue))) { |
e8feb876 | 526 | spin_unlock_irqrestore(&video->irqlock, flags); |
ad614acb LP |
527 | return NULL; |
528 | } | |
529 | ||
eb2c00d2 | 530 | buf = list_first_entry(&video->dmaqueue, struct isp_buffer, |
ad614acb LP |
531 | irqlist); |
532 | list_del(&buf->irqlist); | |
e8feb876 | 533 | spin_unlock_irqrestore(&video->irqlock, flags); |
ad614acb | 534 | |
d6dd645e | 535 | buf->vb.vb2_buf.timestamp = ktime_get_ns(); |
ad614acb LP |
536 | |
537 | /* Do frame number propagation only if this is the output video node. | |
538 | * Frame number either comes from the CSI receivers or it gets | |
539 | * incremented here if H3A is not active. | |
540 | * Note: There is no guarantee that the output buffer will finish | |
541 | * first, so the input number might lag behind by 1 in some cases. | |
542 | */ | |
543 | if (video == pipe->output && !pipe->do_propagation) | |
2d700715 | 544 | buf->vb.sequence = |
eb2c00d2 | 545 | atomic_inc_return(&pipe->frame_number); |
ad614acb | 546 | else |
2d700715 | 547 | buf->vb.sequence = atomic_read(&pipe->frame_number); |
ad614acb | 548 | |
9a36d8ed | 549 | if (pipe->field != V4L2_FIELD_NONE) |
2d700715 | 550 | buf->vb.sequence /= 2; |
9a36d8ed | 551 | |
2d700715 | 552 | buf->vb.field = pipe->field; |
9a36d8ed | 553 | |
875e2e3e | 554 | /* Report pipeline errors to userspace on the capture device side. */ |
fbac1400 | 555 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->error) { |
18ba53f5 | 556 | vb_state = VB2_BUF_STATE_ERROR; |
875e2e3e LP |
557 | pipe->error = false; |
558 | } else { | |
18ba53f5 | 559 | vb_state = VB2_BUF_STATE_DONE; |
875e2e3e | 560 | } |
ad614acb | 561 | |
18ba53f5 | 562 | vb2_buffer_done(&buf->vb.vb2_buf, vb_state); |
fbac1400 LP |
563 | |
564 | spin_lock_irqsave(&video->irqlock, flags); | |
ad614acb LP |
565 | |
566 | if (list_empty(&video->dmaqueue)) { | |
18ba53f5 LP |
567 | enum isp_pipeline_state state; |
568 | ||
fbac1400 LP |
569 | spin_unlock_irqrestore(&video->irqlock, flags); |
570 | ||
571 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
ad614acb LP |
572 | state = ISP_PIPELINE_QUEUE_OUTPUT |
573 | | ISP_PIPELINE_STREAM; | |
574 | else | |
575 | state = ISP_PIPELINE_QUEUE_INPUT | |
576 | | ISP_PIPELINE_STREAM; | |
577 | ||
578 | spin_lock_irqsave(&pipe->lock, flags); | |
579 | pipe->state &= ~state; | |
580 | if (video->pipe.stream_state == ISP_PIPELINE_STREAM_CONTINUOUS) | |
581 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN; | |
582 | spin_unlock_irqrestore(&pipe->lock, flags); | |
583 | return NULL; | |
584 | } | |
585 | ||
fbac1400 LP |
586 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->input != NULL) { |
587 | spin_lock(&pipe->lock); | |
ad614acb | 588 | pipe->state &= ~ISP_PIPELINE_STREAM; |
fbac1400 | 589 | spin_unlock(&pipe->lock); |
ad614acb LP |
590 | } |
591 | ||
eb2c00d2 | 592 | buf = list_first_entry(&video->dmaqueue, struct isp_buffer, |
ad614acb | 593 | irqlist); |
fbac1400 LP |
594 | |
595 | spin_unlock_irqrestore(&video->irqlock, flags); | |
596 | ||
eb2c00d2 | 597 | return buf; |
ad614acb LP |
598 | } |
599 | ||
661112cb LP |
600 | /* |
601 | * omap3isp_video_cancel_stream - Cancel stream on a video node | |
602 | * @video: ISP video object | |
603 | * | |
87e062d4 SA |
604 | * Cancelling a stream returns all buffers queued on the video node to videobuf2 |
605 | * in the erroneous state and makes sure no new buffer can be queued. | |
661112cb LP |
606 | */ |
607 | void omap3isp_video_cancel_stream(struct isp_video *video) | |
608 | { | |
661112cb LP |
609 | unsigned long flags; |
610 | ||
e8feb876 | 611 | spin_lock_irqsave(&video->irqlock, flags); |
87e062d4 | 612 | omap3isp_video_return_buffers(video, VB2_BUF_STATE_ERROR); |
661112cb | 613 | video->error = true; |
e8feb876 | 614 | spin_unlock_irqrestore(&video->irqlock, flags); |
661112cb LP |
615 | } |
616 | ||
ad614acb LP |
617 | /* |
618 | * omap3isp_video_resume - Perform resume operation on the buffers | |
619 | * @video: ISP video object | |
25985edc | 620 | * @continuous: Pipeline is in single shot mode if 0 or continuous mode otherwise |
ad614acb LP |
621 | * |
622 | * This function is intended to be used on suspend/resume scenario. It | |
623 | * requests video queue layer to discard buffers marked as DONE if it's in | |
624 | * continuous mode and requests ISP modules to queue again the ACTIVE buffer | |
625 | * if there's any. | |
626 | */ | |
627 | void omap3isp_video_resume(struct isp_video *video, int continuous) | |
628 | { | |
629 | struct isp_buffer *buf = NULL; | |
630 | ||
988d54c4 LP |
631 | if (continuous && video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
632 | mutex_lock(&video->queue_lock); | |
fbac1400 | 633 | vb2_discard_done(video->queue); |
988d54c4 LP |
634 | mutex_unlock(&video->queue_lock); |
635 | } | |
ad614acb LP |
636 | |
637 | if (!list_empty(&video->dmaqueue)) { | |
638 | buf = list_first_entry(&video->dmaqueue, | |
eb2c00d2 | 639 | struct isp_buffer, irqlist); |
ad614acb LP |
640 | video->ops->queue(video, buf); |
641 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_QUEUED; | |
642 | } else { | |
643 | if (continuous) | |
644 | video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN; | |
645 | } | |
646 | } | |
647 | ||
648 | /* ----------------------------------------------------------------------------- | |
649 | * V4L2 ioctls | |
650 | */ | |
651 | ||
652 | static int | |
653 | isp_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap) | |
654 | { | |
655 | struct isp_video *video = video_drvdata(file); | |
656 | ||
657 | strlcpy(cap->driver, ISP_VIDEO_DRIVER_NAME, sizeof(cap->driver)); | |
658 | strlcpy(cap->card, video->video.name, sizeof(cap->card)); | |
659 | strlcpy(cap->bus_info, "media", sizeof(cap->bus_info)); | |
ad614acb | 660 | |
2c0108e1 SA |
661 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
662 | | V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS; | |
663 | ||
ad614acb | 664 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
2c0108e1 | 665 | cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
ad614acb | 666 | else |
2c0108e1 | 667 | cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; |
ad614acb LP |
668 | |
669 | return 0; | |
670 | } | |
671 | ||
672 | static int | |
673 | isp_video_get_format(struct file *file, void *fh, struct v4l2_format *format) | |
674 | { | |
675 | struct isp_video_fh *vfh = to_isp_video_fh(fh); | |
676 | struct isp_video *video = video_drvdata(file); | |
677 | ||
678 | if (format->type != video->type) | |
679 | return -EINVAL; | |
680 | ||
681 | mutex_lock(&video->mutex); | |
682 | *format = vfh->format; | |
683 | mutex_unlock(&video->mutex); | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
688 | static int | |
689 | isp_video_set_format(struct file *file, void *fh, struct v4l2_format *format) | |
690 | { | |
691 | struct isp_video_fh *vfh = to_isp_video_fh(fh); | |
692 | struct isp_video *video = video_drvdata(file); | |
693 | struct v4l2_mbus_framefmt fmt; | |
694 | ||
695 | if (format->type != video->type) | |
696 | return -EINVAL; | |
697 | ||
bcb4e0ef LP |
698 | /* Replace unsupported field orders with sane defaults. */ |
699 | switch (format->fmt.pix.field) { | |
700 | case V4L2_FIELD_NONE: | |
701 | /* Progressive is supported everywhere. */ | |
702 | break; | |
703 | case V4L2_FIELD_ALTERNATE: | |
704 | /* ALTERNATE is not supported on output nodes. */ | |
705 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
706 | format->fmt.pix.field = V4L2_FIELD_NONE; | |
707 | break; | |
708 | case V4L2_FIELD_INTERLACED: | |
709 | /* The ISP has no concept of video standard, select the | |
710 | * top-bottom order when the unqualified interlaced order is | |
711 | * requested. | |
712 | */ | |
713 | format->fmt.pix.field = V4L2_FIELD_INTERLACED_TB; | |
714 | /* Fall-through */ | |
715 | case V4L2_FIELD_INTERLACED_TB: | |
716 | case V4L2_FIELD_INTERLACED_BT: | |
717 | /* Interlaced orders are only supported at the CCDC output. */ | |
718 | if (video != &video->isp->isp_ccdc.video_out) | |
719 | format->fmt.pix.field = V4L2_FIELD_NONE; | |
720 | break; | |
721 | case V4L2_FIELD_TOP: | |
722 | case V4L2_FIELD_BOTTOM: | |
723 | case V4L2_FIELD_SEQ_TB: | |
724 | case V4L2_FIELD_SEQ_BT: | |
725 | default: | |
726 | /* All other field orders are currently unsupported, default to | |
727 | * progressive. | |
728 | */ | |
48a8a0cb | 729 | format->fmt.pix.field = V4L2_FIELD_NONE; |
bcb4e0ef LP |
730 | break; |
731 | } | |
48a8a0cb | 732 | |
ad614acb LP |
733 | /* Fill the bytesperline and sizeimage fields by converting to media bus |
734 | * format and back to pixel format. | |
735 | */ | |
736 | isp_video_pix_to_mbus(&format->fmt.pix, &fmt); | |
737 | isp_video_mbus_to_pix(video, &fmt, &format->fmt.pix); | |
738 | ||
25c5cc91 | 739 | mutex_lock(&video->mutex); |
ad614acb | 740 | vfh->format = *format; |
ad614acb | 741 | mutex_unlock(&video->mutex); |
25c5cc91 | 742 | |
ad614acb LP |
743 | return 0; |
744 | } | |
745 | ||
746 | static int | |
747 | isp_video_try_format(struct file *file, void *fh, struct v4l2_format *format) | |
748 | { | |
749 | struct isp_video *video = video_drvdata(file); | |
750 | struct v4l2_subdev_format fmt; | |
751 | struct v4l2_subdev *subdev; | |
752 | u32 pad; | |
753 | int ret; | |
754 | ||
755 | if (format->type != video->type) | |
756 | return -EINVAL; | |
757 | ||
758 | subdev = isp_video_remote_subdev(video, &pad); | |
759 | if (subdev == NULL) | |
760 | return -EINVAL; | |
761 | ||
762 | isp_video_pix_to_mbus(&format->fmt.pix, &fmt.format); | |
763 | ||
764 | fmt.pad = pad; | |
765 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
766 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); | |
767 | if (ret) | |
a694f1b2 | 768 | return ret == -ENOIOCTLCMD ? -ENOTTY : ret; |
ad614acb LP |
769 | |
770 | isp_video_mbus_to_pix(video, &fmt.format, &format->fmt.pix); | |
771 | return 0; | |
772 | } | |
773 | ||
774 | static int | |
10d5509c | 775 | isp_video_get_selection(struct file *file, void *fh, struct v4l2_selection *sel) |
ad614acb LP |
776 | { |
777 | struct isp_video *video = video_drvdata(file); | |
778 | struct v4l2_subdev_format format; | |
779 | struct v4l2_subdev *subdev; | |
10d5509c HV |
780 | struct v4l2_subdev_selection sdsel = { |
781 | .which = V4L2_SUBDEV_FORMAT_ACTIVE, | |
782 | .target = sel->target, | |
783 | }; | |
ad614acb LP |
784 | u32 pad; |
785 | int ret; | |
786 | ||
10d5509c HV |
787 | switch (sel->target) { |
788 | case V4L2_SEL_TGT_CROP: | |
789 | case V4L2_SEL_TGT_CROP_BOUNDS: | |
790 | case V4L2_SEL_TGT_CROP_DEFAULT: | |
791 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
792 | return -EINVAL; | |
793 | break; | |
794 | case V4L2_SEL_TGT_COMPOSE: | |
795 | case V4L2_SEL_TGT_COMPOSE_BOUNDS: | |
796 | case V4L2_SEL_TGT_COMPOSE_DEFAULT: | |
797 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
798 | return -EINVAL; | |
799 | break; | |
800 | default: | |
801 | return -EINVAL; | |
802 | } | |
ad614acb LP |
803 | subdev = isp_video_remote_subdev(video, &pad); |
804 | if (subdev == NULL) | |
805 | return -EINVAL; | |
806 | ||
10d5509c | 807 | /* Try the get selection operation first and fallback to get format if not |
ad614acb LP |
808 | * implemented. |
809 | */ | |
10d5509c HV |
810 | sdsel.pad = pad; |
811 | ret = v4l2_subdev_call(subdev, pad, get_selection, NULL, &sdsel); | |
812 | if (!ret) | |
813 | sel->r = sdsel.r; | |
ad614acb LP |
814 | if (ret != -ENOIOCTLCMD) |
815 | return ret; | |
816 | ||
817 | format.pad = pad; | |
818 | format.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
819 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &format); | |
820 | if (ret < 0) | |
a694f1b2 | 821 | return ret == -ENOIOCTLCMD ? -ENOTTY : ret; |
ad614acb | 822 | |
10d5509c HV |
823 | sel->r.left = 0; |
824 | sel->r.top = 0; | |
825 | sel->r.width = format.format.width; | |
826 | sel->r.height = format.format.height; | |
ad614acb LP |
827 | |
828 | return 0; | |
829 | } | |
830 | ||
831 | static int | |
10d5509c | 832 | isp_video_set_selection(struct file *file, void *fh, struct v4l2_selection *sel) |
ad614acb LP |
833 | { |
834 | struct isp_video *video = video_drvdata(file); | |
835 | struct v4l2_subdev *subdev; | |
10d5509c HV |
836 | struct v4l2_subdev_selection sdsel = { |
837 | .which = V4L2_SUBDEV_FORMAT_ACTIVE, | |
838 | .target = sel->target, | |
839 | .flags = sel->flags, | |
840 | .r = sel->r, | |
841 | }; | |
842 | u32 pad; | |
ad614acb LP |
843 | int ret; |
844 | ||
10d5509c HV |
845 | switch (sel->target) { |
846 | case V4L2_SEL_TGT_CROP: | |
847 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
848 | return -EINVAL; | |
849 | break; | |
850 | case V4L2_SEL_TGT_COMPOSE: | |
851 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
852 | return -EINVAL; | |
853 | break; | |
854 | default: | |
855 | return -EINVAL; | |
856 | } | |
857 | subdev = isp_video_remote_subdev(video, &pad); | |
ad614acb LP |
858 | if (subdev == NULL) |
859 | return -EINVAL; | |
860 | ||
10d5509c | 861 | sdsel.pad = pad; |
ad614acb | 862 | mutex_lock(&video->mutex); |
10d5509c | 863 | ret = v4l2_subdev_call(subdev, pad, set_selection, NULL, &sdsel); |
ad614acb | 864 | mutex_unlock(&video->mutex); |
10d5509c HV |
865 | if (!ret) |
866 | sel->r = sdsel.r; | |
ad614acb | 867 | |
a694f1b2 | 868 | return ret == -ENOIOCTLCMD ? -ENOTTY : ret; |
ad614acb LP |
869 | } |
870 | ||
871 | static int | |
872 | isp_video_get_param(struct file *file, void *fh, struct v4l2_streamparm *a) | |
873 | { | |
874 | struct isp_video_fh *vfh = to_isp_video_fh(fh); | |
875 | struct isp_video *video = video_drvdata(file); | |
876 | ||
877 | if (video->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || | |
878 | video->type != a->type) | |
879 | return -EINVAL; | |
880 | ||
881 | memset(a, 0, sizeof(*a)); | |
882 | a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
883 | a->parm.output.capability = V4L2_CAP_TIMEPERFRAME; | |
884 | a->parm.output.timeperframe = vfh->timeperframe; | |
885 | ||
886 | return 0; | |
887 | } | |
888 | ||
889 | static int | |
890 | isp_video_set_param(struct file *file, void *fh, struct v4l2_streamparm *a) | |
891 | { | |
892 | struct isp_video_fh *vfh = to_isp_video_fh(fh); | |
893 | struct isp_video *video = video_drvdata(file); | |
894 | ||
895 | if (video->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || | |
896 | video->type != a->type) | |
897 | return -EINVAL; | |
898 | ||
899 | if (a->parm.output.timeperframe.denominator == 0) | |
900 | a->parm.output.timeperframe.denominator = 1; | |
901 | ||
902 | vfh->timeperframe = a->parm.output.timeperframe; | |
903 | ||
904 | return 0; | |
905 | } | |
906 | ||
907 | static int | |
908 | isp_video_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *rb) | |
909 | { | |
910 | struct isp_video_fh *vfh = to_isp_video_fh(fh); | |
988d54c4 LP |
911 | struct isp_video *video = video_drvdata(file); |
912 | int ret; | |
913 | ||
914 | mutex_lock(&video->queue_lock); | |
fbac1400 | 915 | ret = vb2_reqbufs(&vfh->queue, rb); |
988d54c4 | 916 | mutex_unlock(&video->queue_lock); |
ad614acb | 917 | |
988d54c4 | 918 | return ret; |
ad614acb LP |
919 | } |
920 | ||
921 | static int | |
922 | isp_video_querybuf(struct file *file, void *fh, struct v4l2_buffer *b) | |
923 | { | |
924 | struct isp_video_fh *vfh = to_isp_video_fh(fh); | |
988d54c4 LP |
925 | struct isp_video *video = video_drvdata(file); |
926 | int ret; | |
ad614acb | 927 | |
988d54c4 | 928 | mutex_lock(&video->queue_lock); |
fbac1400 | 929 | ret = vb2_querybuf(&vfh->queue, b); |
988d54c4 LP |
930 | mutex_unlock(&video->queue_lock); |
931 | ||
932 | return ret; | |
ad614acb LP |
933 | } |
934 | ||
935 | static int | |
936 | isp_video_qbuf(struct file *file, void *fh, struct v4l2_buffer *b) | |
937 | { | |
938 | struct isp_video_fh *vfh = to_isp_video_fh(fh); | |
988d54c4 LP |
939 | struct isp_video *video = video_drvdata(file); |
940 | int ret; | |
941 | ||
942 | mutex_lock(&video->queue_lock); | |
fbac1400 | 943 | ret = vb2_qbuf(&vfh->queue, b); |
988d54c4 | 944 | mutex_unlock(&video->queue_lock); |
ad614acb | 945 | |
988d54c4 | 946 | return ret; |
ad614acb LP |
947 | } |
948 | ||
949 | static int | |
950 | isp_video_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b) | |
951 | { | |
952 | struct isp_video_fh *vfh = to_isp_video_fh(fh); | |
988d54c4 LP |
953 | struct isp_video *video = video_drvdata(file); |
954 | int ret; | |
955 | ||
956 | mutex_lock(&video->queue_lock); | |
fbac1400 | 957 | ret = vb2_dqbuf(&vfh->queue, b, file->f_flags & O_NONBLOCK); |
988d54c4 | 958 | mutex_unlock(&video->queue_lock); |
ad614acb | 959 | |
988d54c4 | 960 | return ret; |
ad614acb LP |
961 | } |
962 | ||
ccddd916 SA |
963 | static int isp_video_check_external_subdevs(struct isp_video *video, |
964 | struct isp_pipeline *pipe) | |
965 | { | |
966 | struct isp_device *isp = video->isp; | |
967 | struct media_entity *ents[] = { | |
968 | &isp->isp_csi2a.subdev.entity, | |
969 | &isp->isp_csi2c.subdev.entity, | |
970 | &isp->isp_ccp2.subdev.entity, | |
971 | &isp->isp_ccdc.subdev.entity | |
972 | }; | |
973 | struct media_pad *source_pad; | |
974 | struct media_entity *source = NULL; | |
975 | struct media_entity *sink; | |
976 | struct v4l2_subdev_format fmt; | |
977 | struct v4l2_ext_controls ctrls; | |
978 | struct v4l2_ext_control ctrl; | |
979 | unsigned int i; | |
7c486c0f | 980 | int ret; |
ccddd916 | 981 | |
4b2f1ed1 LP |
982 | /* Memory-to-memory pipelines have no external subdev. */ |
983 | if (pipe->input != NULL) | |
984 | return 0; | |
985 | ||
ccddd916 SA |
986 | for (i = 0; i < ARRAY_SIZE(ents); i++) { |
987 | /* Is the entity part of the pipeline? */ | |
17d3d405 | 988 | if (!media_entity_enum_test(&pipe->ent_enum, ents[i])) |
ccddd916 SA |
989 | continue; |
990 | ||
991 | /* ISP entities have always sink pad == 0. Find source. */ | |
1bddf1b3 | 992 | source_pad = media_entity_remote_pad(&ents[i]->pads[0]); |
ccddd916 SA |
993 | if (source_pad == NULL) |
994 | continue; | |
995 | ||
996 | source = source_pad->entity; | |
997 | sink = ents[i]; | |
998 | break; | |
999 | } | |
1000 | ||
1001 | if (!source) { | |
1002 | dev_warn(isp->dev, "can't find source, failing now\n"); | |
7c486c0f | 1003 | return -EINVAL; |
ccddd916 SA |
1004 | } |
1005 | ||
3efdf62c | 1006 | if (!is_media_entity_v4l2_subdev(source)) |
ccddd916 SA |
1007 | return 0; |
1008 | ||
1009 | pipe->external = media_entity_to_v4l2_subdev(source); | |
1010 | ||
1011 | fmt.pad = source_pad->index; | |
1012 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
1013 | ret = v4l2_subdev_call(media_entity_to_v4l2_subdev(sink), | |
1014 | pad, get_fmt, NULL, &fmt); | |
1015 | if (unlikely(ret < 0)) { | |
1016 | dev_warn(isp->dev, "get_fmt returned null!\n"); | |
1017 | return ret; | |
1018 | } | |
1019 | ||
1697e49a LP |
1020 | pipe->external_width = |
1021 | omap3isp_video_format_info(fmt.format.code)->width; | |
ccddd916 SA |
1022 | |
1023 | memset(&ctrls, 0, sizeof(ctrls)); | |
1024 | memset(&ctrl, 0, sizeof(ctrl)); | |
1025 | ||
1026 | ctrl.id = V4L2_CID_PIXEL_RATE; | |
1027 | ||
1028 | ctrls.count = 1; | |
1029 | ctrls.controls = &ctrl; | |
1030 | ||
1031 | ret = v4l2_g_ext_ctrls(pipe->external->ctrl_handler, &ctrls); | |
1032 | if (ret < 0) { | |
1033 | dev_warn(isp->dev, "no pixel rate control in subdev %s\n", | |
1034 | pipe->external->name); | |
1035 | return ret; | |
1036 | } | |
1037 | ||
1038 | pipe->external_rate = ctrl.value64; | |
1039 | ||
17d3d405 SA |
1040 | if (media_entity_enum_test(&pipe->ent_enum, |
1041 | &isp->isp_ccdc.subdev.entity)) { | |
a6d7a62d SA |
1042 | unsigned int rate = UINT_MAX; |
1043 | /* | |
1044 | * Check that maximum allowed CCDC pixel rate isn't | |
1045 | * exceeded by the pixel rate. | |
1046 | */ | |
1047 | omap3isp_ccdc_max_rate(&isp->isp_ccdc, &rate); | |
1048 | if (pipe->external_rate > rate) | |
1049 | return -ENOSPC; | |
1050 | } | |
1051 | ||
ccddd916 SA |
1052 | return 0; |
1053 | } | |
1054 | ||
ad614acb LP |
1055 | /* |
1056 | * Stream management | |
1057 | * | |
1058 | * Every ISP pipeline has a single input and a single output. The input can be | |
1059 | * either a sensor or a video node. The output is always a video node. | |
1060 | * | |
1061 | * As every pipeline has an output video node, the ISP video objects at the | |
1062 | * pipeline output stores the pipeline state. It tracks the streaming state of | |
1063 | * both the input and output, as well as the availability of buffers. | |
1064 | * | |
1065 | * In sensor-to-memory mode, frames are always available at the pipeline input. | |
1066 | * Starting the sensor usually requires I2C transfers and must be done in | |
1067 | * interruptible context. The pipeline is started and stopped synchronously | |
1068 | * to the stream on/off commands. All modules in the pipeline will get their | |
1069 | * subdev set stream handler called. The module at the end of the pipeline must | |
1070 | * delay starting the hardware until buffers are available at its output. | |
1071 | * | |
1072 | * In memory-to-memory mode, starting/stopping the stream requires | |
1073 | * synchronization between the input and output. ISP modules can't be stopped | |
1074 | * in the middle of a frame, and at least some of the modules seem to become | |
1075 | * busy as soon as they're started, even if they don't receive a frame start | |
1076 | * event. For that reason frames need to be processed in single-shot mode. The | |
1077 | * driver needs to wait until a frame is completely processed and written to | |
1078 | * memory before restarting the pipeline for the next frame. Pipelined | |
1079 | * processing might be possible but requires more testing. | |
1080 | * | |
1081 | * Stream start must be delayed until buffers are available at both the input | |
1082 | * and output. The pipeline must be started in the videobuf queue callback with | |
1083 | * the buffers queue spinlock held. The modules subdev set stream operation must | |
1084 | * not sleep. | |
1085 | */ | |
1086 | static int | |
1087 | isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) | |
1088 | { | |
1089 | struct isp_video_fh *vfh = to_isp_video_fh(fh); | |
1090 | struct isp_video *video = video_drvdata(file); | |
1091 | enum isp_pipeline_state state; | |
1092 | struct isp_pipeline *pipe; | |
ad614acb LP |
1093 | unsigned long flags; |
1094 | int ret; | |
1095 | ||
1096 | if (type != video->type) | |
1097 | return -EINVAL; | |
1098 | ||
1099 | mutex_lock(&video->stream_lock); | |
1100 | ||
ad614acb LP |
1101 | /* Start streaming on the pipeline. No link touching an entity in the |
1102 | * pipeline can be activated or deactivated once streaming is started. | |
1103 | */ | |
1104 | pipe = video->video.entity.pipe | |
1105 | ? to_isp_pipeline(&video->video.entity) : &video->pipe; | |
b0cd79ed | 1106 | |
17d3d405 SA |
1107 | ret = media_entity_enum_init(&pipe->ent_enum, &video->isp->media_dev); |
1108 | if (ret) | |
1109 | goto err_enum_init; | |
ae5df813 | 1110 | |
78c66fbc | 1111 | /* TODO: Implement PM QoS */ |
b0cd79ed SA |
1112 | pipe->l3_ick = clk_get_rate(video->isp->clock[ISP_CLK_L3_ICK]); |
1113 | pipe->max_rate = pipe->l3_ick; | |
1114 | ||
da39257f SA |
1115 | ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe); |
1116 | if (ret < 0) | |
1117 | goto err_pipeline_start; | |
ad614acb LP |
1118 | |
1119 | /* Verify that the currently configured format matches the output of | |
1120 | * the connected subdev. | |
1121 | */ | |
1122 | ret = isp_video_check_format(video, vfh); | |
1123 | if (ret < 0) | |
da39257f | 1124 | goto err_check_format; |
ad614acb LP |
1125 | |
1126 | video->bpl_padding = ret; | |
1127 | video->bpl_value = vfh->format.fmt.pix.bytesperline; | |
1128 | ||
ae5df813 SA |
1129 | ret = isp_video_get_graph_data(video, pipe); |
1130 | if (ret < 0) | |
1131 | goto err_check_format; | |
ad614acb | 1132 | |
ae5df813 | 1133 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
ad614acb | 1134 | state = ISP_PIPELINE_STREAM_OUTPUT | ISP_PIPELINE_IDLE_OUTPUT; |
ae5df813 | 1135 | else |
ad614acb | 1136 | state = ISP_PIPELINE_STREAM_INPUT | ISP_PIPELINE_IDLE_INPUT; |
ad614acb | 1137 | |
ccddd916 SA |
1138 | ret = isp_video_check_external_subdevs(video, pipe); |
1139 | if (ret < 0) | |
1140 | goto err_check_format; | |
1141 | ||
875e2e3e LP |
1142 | pipe->error = false; |
1143 | ||
ad614acb LP |
1144 | spin_lock_irqsave(&pipe->lock, flags); |
1145 | pipe->state &= ~ISP_PIPELINE_STREAM; | |
1146 | pipe->state |= state; | |
1147 | spin_unlock_irqrestore(&pipe->lock, flags); | |
1148 | ||
1149 | /* Set the maximum time per frame as the value requested by userspace. | |
1150 | * This is a soft limit that can be overridden if the hardware doesn't | |
1151 | * support the request limit. | |
1152 | */ | |
1153 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
1154 | pipe->max_timeperframe = vfh->timeperframe; | |
1155 | ||
1156 | video->queue = &vfh->queue; | |
1157 | INIT_LIST_HEAD(&video->dmaqueue); | |
1158 | atomic_set(&pipe->frame_number, -1); | |
9a36d8ed | 1159 | pipe->field = vfh->format.fmt.pix.field; |
ad614acb | 1160 | |
988d54c4 | 1161 | mutex_lock(&video->queue_lock); |
fbac1400 | 1162 | ret = vb2_streamon(&vfh->queue, type); |
988d54c4 | 1163 | mutex_unlock(&video->queue_lock); |
ad614acb | 1164 | if (ret < 0) |
da39257f | 1165 | goto err_check_format; |
ad614acb | 1166 | |
da39257f | 1167 | mutex_unlock(&video->stream_lock); |
17d3d405 | 1168 | |
da39257f SA |
1169 | return 0; |
1170 | ||
da39257f SA |
1171 | err_check_format: |
1172 | media_entity_pipeline_stop(&video->video.entity); | |
1173 | err_pipeline_start: | |
78c66fbc | 1174 | /* TODO: Implement PM QoS */ |
da39257f SA |
1175 | /* The DMA queue must be emptied here, otherwise CCDC interrupts that |
1176 | * will get triggered the next time the CCDC is powered up will try to | |
1177 | * access buffers that might have been freed but still present in the | |
1178 | * DMA queue. This can easily get triggered if the above | |
1179 | * omap3isp_pipeline_set_stream() call fails on a system with a | |
1180 | * free-running sensor. | |
1181 | */ | |
1182 | INIT_LIST_HEAD(&video->dmaqueue); | |
1183 | video->queue = NULL; | |
ad614acb | 1184 | |
17d3d405 SA |
1185 | media_entity_enum_cleanup(&pipe->ent_enum); |
1186 | ||
1187 | err_enum_init: | |
ad614acb | 1188 | mutex_unlock(&video->stream_lock); |
17d3d405 | 1189 | |
ad614acb LP |
1190 | return ret; |
1191 | } | |
1192 | ||
1193 | static int | |
1194 | isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) | |
1195 | { | |
1196 | struct isp_video_fh *vfh = to_isp_video_fh(fh); | |
1197 | struct isp_video *video = video_drvdata(file); | |
1198 | struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); | |
1199 | enum isp_pipeline_state state; | |
1200 | unsigned int streaming; | |
1201 | unsigned long flags; | |
1202 | ||
1203 | if (type != video->type) | |
1204 | return -EINVAL; | |
1205 | ||
1206 | mutex_lock(&video->stream_lock); | |
1207 | ||
1208 | /* Make sure we're not streaming yet. */ | |
988d54c4 | 1209 | mutex_lock(&video->queue_lock); |
fbac1400 | 1210 | streaming = vb2_is_streaming(&vfh->queue); |
988d54c4 | 1211 | mutex_unlock(&video->queue_lock); |
ad614acb LP |
1212 | |
1213 | if (!streaming) | |
1214 | goto done; | |
1215 | ||
1216 | /* Update the pipeline state. */ | |
1217 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1218 | state = ISP_PIPELINE_STREAM_OUTPUT | |
1219 | | ISP_PIPELINE_QUEUE_OUTPUT; | |
1220 | else | |
1221 | state = ISP_PIPELINE_STREAM_INPUT | |
1222 | | ISP_PIPELINE_QUEUE_INPUT; | |
1223 | ||
1224 | spin_lock_irqsave(&pipe->lock, flags); | |
1225 | pipe->state &= ~state; | |
1226 | spin_unlock_irqrestore(&pipe->lock, flags); | |
1227 | ||
1228 | /* Stop the stream. */ | |
1229 | omap3isp_pipeline_set_stream(pipe, ISP_PIPELINE_STREAM_STOPPED); | |
08344492 LP |
1230 | omap3isp_video_cancel_stream(video); |
1231 | ||
988d54c4 | 1232 | mutex_lock(&video->queue_lock); |
fbac1400 | 1233 | vb2_streamoff(&vfh->queue, type); |
988d54c4 | 1234 | mutex_unlock(&video->queue_lock); |
ad614acb | 1235 | video->queue = NULL; |
661112cb | 1236 | video->error = false; |
ad614acb | 1237 | |
78c66fbc | 1238 | /* TODO: Implement PM QoS */ |
ad614acb LP |
1239 | media_entity_pipeline_stop(&video->video.entity); |
1240 | ||
17d3d405 SA |
1241 | media_entity_enum_cleanup(&pipe->ent_enum); |
1242 | ||
ad614acb LP |
1243 | done: |
1244 | mutex_unlock(&video->stream_lock); | |
1245 | return 0; | |
1246 | } | |
1247 | ||
1248 | static int | |
1249 | isp_video_enum_input(struct file *file, void *fh, struct v4l2_input *input) | |
1250 | { | |
1251 | if (input->index > 0) | |
1252 | return -EINVAL; | |
1253 | ||
1254 | strlcpy(input->name, "camera", sizeof(input->name)); | |
1255 | input->type = V4L2_INPUT_TYPE_CAMERA; | |
1256 | ||
1257 | return 0; | |
1258 | } | |
1259 | ||
1260 | static int | |
1261 | isp_video_g_input(struct file *file, void *fh, unsigned int *input) | |
1262 | { | |
1263 | *input = 0; | |
1264 | ||
1265 | return 0; | |
1266 | } | |
1267 | ||
1268 | static int | |
1269 | isp_video_s_input(struct file *file, void *fh, unsigned int input) | |
1270 | { | |
1271 | return input == 0 ? 0 : -EINVAL; | |
1272 | } | |
1273 | ||
1274 | static const struct v4l2_ioctl_ops isp_video_ioctl_ops = { | |
1275 | .vidioc_querycap = isp_video_querycap, | |
1276 | .vidioc_g_fmt_vid_cap = isp_video_get_format, | |
1277 | .vidioc_s_fmt_vid_cap = isp_video_set_format, | |
1278 | .vidioc_try_fmt_vid_cap = isp_video_try_format, | |
1279 | .vidioc_g_fmt_vid_out = isp_video_get_format, | |
1280 | .vidioc_s_fmt_vid_out = isp_video_set_format, | |
1281 | .vidioc_try_fmt_vid_out = isp_video_try_format, | |
10d5509c HV |
1282 | .vidioc_g_selection = isp_video_get_selection, |
1283 | .vidioc_s_selection = isp_video_set_selection, | |
ad614acb LP |
1284 | .vidioc_g_parm = isp_video_get_param, |
1285 | .vidioc_s_parm = isp_video_set_param, | |
1286 | .vidioc_reqbufs = isp_video_reqbufs, | |
1287 | .vidioc_querybuf = isp_video_querybuf, | |
1288 | .vidioc_qbuf = isp_video_qbuf, | |
1289 | .vidioc_dqbuf = isp_video_dqbuf, | |
1290 | .vidioc_streamon = isp_video_streamon, | |
1291 | .vidioc_streamoff = isp_video_streamoff, | |
1292 | .vidioc_enum_input = isp_video_enum_input, | |
1293 | .vidioc_g_input = isp_video_g_input, | |
1294 | .vidioc_s_input = isp_video_s_input, | |
1295 | }; | |
1296 | ||
1297 | /* ----------------------------------------------------------------------------- | |
1298 | * V4L2 file operations | |
1299 | */ | |
1300 | ||
1301 | static int isp_video_open(struct file *file) | |
1302 | { | |
1303 | struct isp_video *video = video_drvdata(file); | |
1304 | struct isp_video_fh *handle; | |
fbac1400 | 1305 | struct vb2_queue *queue; |
ad614acb LP |
1306 | int ret = 0; |
1307 | ||
1308 | handle = kzalloc(sizeof(*handle), GFP_KERNEL); | |
1309 | if (handle == NULL) | |
1310 | return -ENOMEM; | |
1311 | ||
1312 | v4l2_fh_init(&handle->vfh, &video->video); | |
1313 | v4l2_fh_add(&handle->vfh); | |
1314 | ||
1315 | /* If this is the first user, initialise the pipeline. */ | |
1316 | if (omap3isp_get(video->isp) == NULL) { | |
1317 | ret = -EBUSY; | |
1318 | goto done; | |
1319 | } | |
1320 | ||
506a47eb | 1321 | ret = v4l2_pipeline_pm_use(&video->video.entity, 1); |
ad614acb LP |
1322 | if (ret < 0) { |
1323 | omap3isp_put(video->isp); | |
1324 | goto done; | |
1325 | } | |
1326 | ||
fbac1400 LP |
1327 | queue = &handle->queue; |
1328 | queue->type = video->type; | |
1329 | queue->io_modes = VB2_MMAP | VB2_USERPTR; | |
1330 | queue->drv_priv = handle; | |
1331 | queue->ops = &isp_video_queue_ops; | |
1332 | queue->mem_ops = &vb2_dma_contig_memops; | |
1333 | queue->buf_struct_size = sizeof(struct isp_buffer); | |
1334 | queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; | |
1ad70ced | 1335 | queue->dev = video->isp->dev; |
fbac1400 LP |
1336 | |
1337 | ret = vb2_queue_init(&handle->queue); | |
1338 | if (ret < 0) { | |
1339 | omap3isp_put(video->isp); | |
1340 | goto done; | |
1341 | } | |
ad614acb LP |
1342 | |
1343 | memset(&handle->format, 0, sizeof(handle->format)); | |
1344 | handle->format.type = video->type; | |
1345 | handle->timeperframe.denominator = 1; | |
1346 | ||
1347 | handle->video = video; | |
1348 | file->private_data = &handle->vfh; | |
1349 | ||
1350 | done: | |
1351 | if (ret < 0) { | |
1352 | v4l2_fh_del(&handle->vfh); | |
1353 | kfree(handle); | |
1354 | } | |
1355 | ||
1356 | return ret; | |
1357 | } | |
1358 | ||
1359 | static int isp_video_release(struct file *file) | |
1360 | { | |
1361 | struct isp_video *video = video_drvdata(file); | |
1362 | struct v4l2_fh *vfh = file->private_data; | |
1363 | struct isp_video_fh *handle = to_isp_video_fh(vfh); | |
1364 | ||
1365 | /* Disable streaming and free the buffers queue resources. */ | |
1366 | isp_video_streamoff(file, vfh, video->type); | |
1367 | ||
988d54c4 | 1368 | mutex_lock(&video->queue_lock); |
fbac1400 | 1369 | vb2_queue_release(&handle->queue); |
988d54c4 | 1370 | mutex_unlock(&video->queue_lock); |
ad614acb | 1371 | |
506a47eb | 1372 | v4l2_pipeline_pm_use(&video->video.entity, 0); |
ad614acb LP |
1373 | |
1374 | /* Release the file handle. */ | |
1375 | v4l2_fh_del(vfh); | |
1376 | kfree(handle); | |
1377 | file->private_data = NULL; | |
1378 | ||
1379 | omap3isp_put(video->isp); | |
1380 | ||
1381 | return 0; | |
1382 | } | |
1383 | ||
1384 | static unsigned int isp_video_poll(struct file *file, poll_table *wait) | |
1385 | { | |
1386 | struct isp_video_fh *vfh = to_isp_video_fh(file->private_data); | |
988d54c4 LP |
1387 | struct isp_video *video = video_drvdata(file); |
1388 | int ret; | |
ad614acb | 1389 | |
988d54c4 | 1390 | mutex_lock(&video->queue_lock); |
fbac1400 | 1391 | ret = vb2_poll(&vfh->queue, file, wait); |
988d54c4 LP |
1392 | mutex_unlock(&video->queue_lock); |
1393 | ||
1394 | return ret; | |
ad614acb LP |
1395 | } |
1396 | ||
1397 | static int isp_video_mmap(struct file *file, struct vm_area_struct *vma) | |
1398 | { | |
1399 | struct isp_video_fh *vfh = to_isp_video_fh(file->private_data); | |
1400 | ||
9be29369 | 1401 | return vb2_mmap(&vfh->queue, vma); |
ad614acb LP |
1402 | } |
1403 | ||
1404 | static struct v4l2_file_operations isp_video_fops = { | |
1405 | .owner = THIS_MODULE, | |
1406 | .unlocked_ioctl = video_ioctl2, | |
1407 | .open = isp_video_open, | |
1408 | .release = isp_video_release, | |
1409 | .poll = isp_video_poll, | |
1410 | .mmap = isp_video_mmap, | |
1411 | }; | |
1412 | ||
1413 | /* ----------------------------------------------------------------------------- | |
1414 | * ISP video core | |
1415 | */ | |
1416 | ||
1417 | static const struct isp_video_operations isp_video_dummy_ops = { | |
1418 | }; | |
1419 | ||
1420 | int omap3isp_video_init(struct isp_video *video, const char *name) | |
1421 | { | |
1422 | const char *direction; | |
1423 | int ret; | |
1424 | ||
1425 | switch (video->type) { | |
1426 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
1427 | direction = "output"; | |
8dad936a SA |
1428 | video->pad.flags = MEDIA_PAD_FL_SINK |
1429 | | MEDIA_PAD_FL_MUST_CONNECT; | |
ad614acb LP |
1430 | break; |
1431 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
1432 | direction = "input"; | |
8dad936a SA |
1433 | video->pad.flags = MEDIA_PAD_FL_SOURCE |
1434 | | MEDIA_PAD_FL_MUST_CONNECT; | |
954f340f | 1435 | video->video.vfl_dir = VFL_DIR_TX; |
ad614acb LP |
1436 | break; |
1437 | ||
1438 | default: | |
1439 | return -EINVAL; | |
1440 | } | |
1441 | ||
ab22e77c | 1442 | ret = media_entity_pads_init(&video->video.entity, 1, &video->pad); |
1ad70ced | 1443 | if (ret < 0) |
ad614acb LP |
1444 | return ret; |
1445 | ||
1446 | mutex_init(&video->mutex); | |
1447 | atomic_set(&video->active, 0); | |
1448 | ||
1449 | spin_lock_init(&video->pipe.lock); | |
1450 | mutex_init(&video->stream_lock); | |
988d54c4 | 1451 | mutex_init(&video->queue_lock); |
e8feb876 | 1452 | spin_lock_init(&video->irqlock); |
ad614acb LP |
1453 | |
1454 | /* Initialize the video device. */ | |
1455 | if (video->ops == NULL) | |
1456 | video->ops = &isp_video_dummy_ops; | |
1457 | ||
1458 | video->video.fops = &isp_video_fops; | |
1459 | snprintf(video->video.name, sizeof(video->video.name), | |
1460 | "OMAP3 ISP %s %s", name, direction); | |
1461 | video->video.vfl_type = VFL_TYPE_GRABBER; | |
1462 | video->video.release = video_device_release_empty; | |
1463 | video->video.ioctl_ops = &isp_video_ioctl_ops; | |
1464 | video->pipe.stream_state = ISP_PIPELINE_STREAM_STOPPED; | |
1465 | ||
1466 | video_set_drvdata(&video->video, video); | |
1467 | ||
1468 | return 0; | |
1469 | } | |
1470 | ||
63b4ca23 LP |
1471 | void omap3isp_video_cleanup(struct isp_video *video) |
1472 | { | |
1473 | media_entity_cleanup(&video->video.entity); | |
988d54c4 | 1474 | mutex_destroy(&video->queue_lock); |
ed33ac8e LP |
1475 | mutex_destroy(&video->stream_lock); |
1476 | mutex_destroy(&video->mutex); | |
63b4ca23 LP |
1477 | } |
1478 | ||
ad614acb LP |
1479 | int omap3isp_video_register(struct isp_video *video, struct v4l2_device *vdev) |
1480 | { | |
1481 | int ret; | |
1482 | ||
1483 | video->video.v4l2_dev = vdev; | |
1484 | ||
1485 | ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1); | |
1486 | if (ret < 0) | |
4feca39b LP |
1487 | dev_err(video->isp->dev, |
1488 | "%s: could not register video device (%d)\n", | |
ad614acb LP |
1489 | __func__, ret); |
1490 | ||
1491 | return ret; | |
1492 | } | |
1493 | ||
1494 | void omap3isp_video_unregister(struct isp_video *video) | |
1495 | { | |
63b4ca23 | 1496 | if (video_is_registered(&video->video)) |
ad614acb | 1497 | video_unregister_device(&video->video); |
ad614acb | 1498 | } |