Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Texas Instruments Inc |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License as |
| 6 | * published by the Free Software Foundation version 2. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program; if not, write to the Free Software |
| 15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 16 | * |
| 17 | * Contributors: |
| 18 | * Manjunath Hadli <manjunath.hadli@ti.com> |
| 19 | * Prabhakar Lad <prabhakar.lad@ti.com> |
| 20 | */ |
| 21 | |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/slab.h> |
| 24 | |
| 25 | #include <media/v4l2-ioctl.h> |
| 26 | |
| 27 | #include "vpfe.h" |
| 28 | #include "vpfe_mc_capture.h" |
| 29 | |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 30 | static int debug; |
| 31 | |
| 32 | /* get v4l2 subdev pointer to external subdev which is active */ |
| 33 | static struct media_entity *vpfe_get_input_entity |
| 34 | (struct vpfe_video_device *video) |
| 35 | { |
| 36 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 37 | struct media_pad *remote; |
| 38 | |
Andrzej Hajda | 1bddf1b | 2013-06-03 05:16:13 -0300 | [diff] [blame] | 39 | remote = media_entity_remote_pad(&vpfe_dev->vpfe_isif.pads[0]); |
sayli karnik | a0db9c0 | 2016-09-16 23:29:30 +0530 | [diff] [blame] | 40 | if (!remote) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 41 | pr_err("Invalid media connection to isif/ccdc\n"); |
| 42 | return NULL; |
| 43 | } |
| 44 | return remote->entity; |
| 45 | } |
| 46 | |
| 47 | /* updates external subdev(sensor/decoder) which is active */ |
| 48 | static int vpfe_update_current_ext_subdev(struct vpfe_video_device *video) |
| 49 | { |
| 50 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 51 | struct vpfe_config *vpfe_cfg; |
| 52 | struct v4l2_subdev *subdev; |
| 53 | struct media_pad *remote; |
| 54 | int i; |
| 55 | |
Andrzej Hajda | 1bddf1b | 2013-06-03 05:16:13 -0300 | [diff] [blame] | 56 | remote = media_entity_remote_pad(&vpfe_dev->vpfe_isif.pads[0]); |
sayli karnik | a0db9c0 | 2016-09-16 23:29:30 +0530 | [diff] [blame] | 57 | if (!remote) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 58 | pr_err("Invalid media connection to isif/ccdc\n"); |
| 59 | return -EINVAL; |
| 60 | } |
| 61 | |
| 62 | subdev = media_entity_to_v4l2_subdev(remote->entity); |
| 63 | vpfe_cfg = vpfe_dev->pdev->platform_data; |
| 64 | for (i = 0; i < vpfe_cfg->num_subdevs; i++) { |
| 65 | if (!strcmp(vpfe_cfg->sub_devs[i].module_name, subdev->name)) { |
| 66 | video->current_ext_subdev = &vpfe_cfg->sub_devs[i]; |
| 67 | break; |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | /* if user not linked decoder/sensor to isif/ccdc */ |
| 72 | if (i == vpfe_cfg->num_subdevs) { |
| 73 | pr_err("Invalid media chain connection to isif/ccdc\n"); |
| 74 | return -EINVAL; |
| 75 | } |
| 76 | /* find the v4l2 subdev pointer */ |
| 77 | for (i = 0; i < vpfe_dev->num_ext_subdevs; i++) { |
| 78 | if (!strcmp(video->current_ext_subdev->module_name, |
| 79 | vpfe_dev->sd[i]->name)) |
| 80 | video->current_ext_subdev->subdev = vpfe_dev->sd[i]; |
| 81 | } |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | /* get the subdev which is connected to the output video node */ |
| 86 | static struct v4l2_subdev * |
| 87 | vpfe_video_remote_subdev(struct vpfe_video_device *video, u32 *pad) |
| 88 | { |
Andrzej Hajda | 1bddf1b | 2013-06-03 05:16:13 -0300 | [diff] [blame] | 89 | struct media_pad *remote = media_entity_remote_pad(&video->pad); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 90 | |
Mauro Carvalho Chehab | 14fae6f | 2015-05-07 22:12:36 -0300 | [diff] [blame] | 91 | if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 92 | return NULL; |
| 93 | if (pad) |
| 94 | *pad = remote->index; |
| 95 | return media_entity_to_v4l2_subdev(remote->entity); |
| 96 | } |
| 97 | |
| 98 | /* get the format set at output pad of the adjacent subdev */ |
| 99 | static int |
| 100 | __vpfe_video_get_format(struct vpfe_video_device *video, |
| 101 | struct v4l2_format *format) |
| 102 | { |
| 103 | struct v4l2_subdev_format fmt; |
| 104 | struct v4l2_subdev *subdev; |
| 105 | struct media_pad *remote; |
| 106 | u32 pad; |
| 107 | int ret; |
| 108 | |
| 109 | subdev = vpfe_video_remote_subdev(video, &pad); |
sayli karnik | a0db9c0 | 2016-09-16 23:29:30 +0530 | [diff] [blame] | 110 | if (!subdev) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 111 | return -EINVAL; |
| 112 | |
| 113 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
Andrzej Hajda | 1bddf1b | 2013-06-03 05:16:13 -0300 | [diff] [blame] | 114 | remote = media_entity_remote_pad(&video->pad); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 115 | fmt.pad = remote->index; |
| 116 | |
| 117 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); |
| 118 | if (ret == -ENOIOCTLCMD) |
| 119 | return -EINVAL; |
| 120 | |
| 121 | format->type = video->type; |
| 122 | /* convert mbus_format to v4l2_format */ |
| 123 | v4l2_fill_pix_format(&format->fmt.pix, &fmt.format); |
| 124 | mbus_to_pix(&fmt.format, &format->fmt.pix); |
| 125 | |
| 126 | return 0; |
| 127 | } |
| 128 | |
| 129 | /* make a note of pipeline details */ |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 130 | static int vpfe_prepare_pipeline(struct vpfe_video_device *video) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 131 | { |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 132 | struct media_entity_graph graph; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 133 | struct media_entity *entity = &video->video_dev.entity; |
Javier Martinez Canillas | d10c989 | 2015-08-19 12:35:21 -0300 | [diff] [blame] | 134 | struct media_device *mdev = entity->graph_obj.mdev; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 135 | struct vpfe_pipeline *pipe = &video->pipe; |
| 136 | struct vpfe_video_device *far_end = NULL; |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 137 | int ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 138 | |
| 139 | pipe->input_num = 0; |
| 140 | pipe->output_num = 0; |
| 141 | |
| 142 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
| 143 | pipe->inputs[pipe->input_num++] = video; |
| 144 | else |
| 145 | pipe->outputs[pipe->output_num++] = video; |
| 146 | |
| 147 | mutex_lock(&mdev->graph_mutex); |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 148 | ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev); |
| 149 | if (ret) { |
Wei Yongjun | 4f388a9 | 2016-02-05 11:52:00 -0200 | [diff] [blame] | 150 | mutex_unlock(&mdev->graph_mutex); |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 151 | return -ENOMEM; |
| 152 | } |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 153 | media_entity_graph_walk_start(&graph, entity); |
| 154 | while ((entity = media_entity_graph_walk_next(&graph))) { |
| 155 | if (entity == &video->video_dev.entity) |
| 156 | continue; |
Laurent Pinchart | 45b4687 | 2016-02-29 08:45:45 -0300 | [diff] [blame] | 157 | if (!is_media_entity_v4l2_video_device(entity)) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 158 | continue; |
| 159 | far_end = to_vpfe_video(media_entity_to_video_device(entity)); |
| 160 | if (far_end->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
| 161 | pipe->inputs[pipe->input_num++] = far_end; |
| 162 | else |
| 163 | pipe->outputs[pipe->output_num++] = far_end; |
| 164 | } |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 165 | media_entity_graph_walk_cleanup(&graph); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 166 | mutex_unlock(&mdev->graph_mutex); |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 167 | |
| 168 | return 0; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | /* update pipe state selected by user */ |
| 172 | static int vpfe_update_pipe_state(struct vpfe_video_device *video) |
| 173 | { |
| 174 | struct vpfe_pipeline *pipe = &video->pipe; |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 175 | int ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 176 | |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 177 | ret = vpfe_prepare_pipeline(video); |
| 178 | if (ret) |
| 179 | return ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 180 | |
Thaissa Falbo | 9c5d893 | 2016-02-15 02:07:41 -0200 | [diff] [blame] | 181 | /* |
| 182 | * Find out if there is any input video |
| 183 | * if yes, it is single shot. |
| 184 | */ |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 185 | if (pipe->input_num == 0) { |
| 186 | pipe->state = VPFE_PIPELINE_STREAM_CONTINUOUS; |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 187 | ret = vpfe_update_current_ext_subdev(video); |
| 188 | if (ret) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 189 | pr_err("Invalid external subdev\n"); |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 190 | return ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 191 | } |
| 192 | } else { |
| 193 | pipe->state = VPFE_PIPELINE_STREAM_SINGLESHOT; |
| 194 | } |
| 195 | video->initialized = 1; |
| 196 | video->skip_frame_count = 1; |
| 197 | video->skip_frame_count_init = 1; |
| 198 | return 0; |
| 199 | } |
| 200 | |
| 201 | /* checks wether pipeline is ready for enabling */ |
| 202 | int vpfe_video_is_pipe_ready(struct vpfe_pipeline *pipe) |
| 203 | { |
| 204 | int i; |
| 205 | |
| 206 | for (i = 0; i < pipe->input_num; i++) |
| 207 | if (!pipe->inputs[i]->started || |
| 208 | pipe->inputs[i]->state != VPFE_VIDEO_BUFFER_QUEUED) |
| 209 | return 0; |
| 210 | for (i = 0; i < pipe->output_num; i++) |
| 211 | if (!pipe->outputs[i]->started || |
| 212 | pipe->outputs[i]->state != VPFE_VIDEO_BUFFER_QUEUED) |
| 213 | return 0; |
| 214 | return 1; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Validate a pipeline by checking both ends of all links for format |
| 219 | * discrepancies. |
| 220 | * |
| 221 | * Return 0 if all formats match, or -EPIPE if at least one link is found with |
| 222 | * different formats on its two ends. |
| 223 | */ |
| 224 | static int vpfe_video_validate_pipeline(struct vpfe_pipeline *pipe) |
| 225 | { |
| 226 | struct v4l2_subdev_format fmt_source; |
| 227 | struct v4l2_subdev_format fmt_sink; |
| 228 | struct v4l2_subdev *subdev; |
| 229 | struct media_pad *pad; |
| 230 | int ret; |
| 231 | |
| 232 | /* |
| 233 | * Should not matter if it is output[0] or 1 as |
| 234 | * the general ideas is to traverse backwards and |
| 235 | * the fact that the out video node always has the |
| 236 | * format of the connected pad. |
| 237 | */ |
| 238 | subdev = vpfe_video_remote_subdev(pipe->outputs[0], NULL); |
sayli karnik | a0db9c0 | 2016-09-16 23:29:30 +0530 | [diff] [blame] | 239 | if (!subdev) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 240 | return -EPIPE; |
| 241 | |
| 242 | while (1) { |
| 243 | /* Retrieve the sink format */ |
| 244 | pad = &subdev->entity.pads[0]; |
| 245 | if (!(pad->flags & MEDIA_PAD_FL_SINK)) |
| 246 | break; |
| 247 | |
| 248 | fmt_sink.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 249 | fmt_sink.pad = pad->index; |
| 250 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, |
| 251 | &fmt_sink); |
| 252 | |
| 253 | if (ret < 0 && ret != -ENOIOCTLCMD) |
| 254 | return -EPIPE; |
| 255 | |
| 256 | /* Retrieve the source format */ |
Andrzej Hajda | 1bddf1b | 2013-06-03 05:16:13 -0300 | [diff] [blame] | 257 | pad = media_entity_remote_pad(pad); |
Mauro Carvalho Chehab | 14fae6f | 2015-05-07 22:12:36 -0300 | [diff] [blame] | 258 | if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 259 | break; |
| 260 | |
| 261 | subdev = media_entity_to_v4l2_subdev(pad->entity); |
| 262 | |
| 263 | fmt_source.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 264 | fmt_source.pad = pad->index; |
| 265 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt_source); |
| 266 | if (ret < 0 && ret != -ENOIOCTLCMD) |
| 267 | return -EPIPE; |
| 268 | |
| 269 | /* Check if the two ends match */ |
| 270 | if (fmt_source.format.code != fmt_sink.format.code || |
| 271 | fmt_source.format.width != fmt_sink.format.width || |
| 272 | fmt_source.format.height != fmt_sink.format.height) |
| 273 | return -EPIPE; |
| 274 | } |
| 275 | return 0; |
| 276 | } |
| 277 | |
| 278 | /* |
| 279 | * vpfe_pipeline_enable() - Enable streaming on a pipeline |
| 280 | * @vpfe_dev: vpfe device |
| 281 | * @pipe: vpfe pipeline |
| 282 | * |
| 283 | * Walk the entities chain starting at the pipeline output video node and start |
| 284 | * all modules in the chain in the given mode. |
| 285 | * |
| 286 | * Return 0 if successful, or the return value of the failed video::s_stream |
| 287 | * operation otherwise. |
| 288 | */ |
| 289 | static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe) |
| 290 | { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 291 | struct media_entity *entity; |
| 292 | struct v4l2_subdev *subdev; |
| 293 | struct media_device *mdev; |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 294 | int ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 295 | |
| 296 | if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) |
| 297 | entity = vpfe_get_input_entity(pipe->outputs[0]); |
| 298 | else |
| 299 | entity = &pipe->inputs[0]->video_dev.entity; |
| 300 | |
Javier Martinez Canillas | d10c989 | 2015-08-19 12:35:21 -0300 | [diff] [blame] | 301 | mdev = entity->graph_obj.mdev; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 302 | mutex_lock(&mdev->graph_mutex); |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 303 | ret = media_entity_graph_walk_init(&pipe->graph, |
| 304 | entity->graph_obj.mdev); |
| 305 | if (ret) |
| 306 | goto out; |
| 307 | media_entity_graph_walk_start(&pipe->graph, entity); |
| 308 | while ((entity = media_entity_graph_walk_next(&pipe->graph))) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 309 | |
Mauro Carvalho Chehab | 59ecd59 | 2015-05-07 22:12:33 -0300 | [diff] [blame] | 310 | if (!is_media_entity_v4l2_subdev(entity)) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 311 | continue; |
| 312 | subdev = media_entity_to_v4l2_subdev(entity); |
| 313 | ret = v4l2_subdev_call(subdev, video, s_stream, 1); |
| 314 | if (ret < 0 && ret != -ENOIOCTLCMD) |
| 315 | break; |
| 316 | } |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 317 | out: |
| 318 | if (ret) |
| 319 | media_entity_graph_walk_cleanup(&pipe->graph); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 320 | mutex_unlock(&mdev->graph_mutex); |
| 321 | return ret; |
| 322 | } |
| 323 | |
| 324 | /* |
| 325 | * vpfe_pipeline_disable() - Disable streaming on a pipeline |
| 326 | * @vpfe_dev: vpfe device |
| 327 | * @pipe: VPFE pipeline |
| 328 | * |
| 329 | * Walk the entities chain starting at the pipeline output video node and stop |
| 330 | * all modules in the chain. |
| 331 | * |
| 332 | * Return 0 if all modules have been properly stopped, or -ETIMEDOUT if a module |
| 333 | * can't be stopped. |
| 334 | */ |
| 335 | static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe) |
| 336 | { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 337 | struct media_entity *entity; |
| 338 | struct v4l2_subdev *subdev; |
| 339 | struct media_device *mdev; |
| 340 | int ret = 0; |
| 341 | |
| 342 | if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) |
| 343 | entity = vpfe_get_input_entity(pipe->outputs[0]); |
| 344 | else |
| 345 | entity = &pipe->inputs[0]->video_dev.entity; |
| 346 | |
Javier Martinez Canillas | d10c989 | 2015-08-19 12:35:21 -0300 | [diff] [blame] | 347 | mdev = entity->graph_obj.mdev; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 348 | mutex_lock(&mdev->graph_mutex); |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 349 | media_entity_graph_walk_start(&pipe->graph, entity); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 350 | |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 351 | while ((entity = media_entity_graph_walk_next(&pipe->graph))) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 352 | |
Mauro Carvalho Chehab | 3efdf62 | 2015-05-07 22:12:32 -0300 | [diff] [blame] | 353 | if (!is_media_entity_v4l2_subdev(entity)) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 354 | continue; |
| 355 | subdev = media_entity_to_v4l2_subdev(entity); |
| 356 | ret = v4l2_subdev_call(subdev, video, s_stream, 0); |
| 357 | if (ret < 0 && ret != -ENOIOCTLCMD) |
| 358 | break; |
| 359 | } |
| 360 | mutex_unlock(&mdev->graph_mutex); |
| 361 | |
Sakari Ailus | bb0faeb | 2015-12-16 11:32:35 -0200 | [diff] [blame] | 362 | media_entity_graph_walk_cleanup(&pipe->graph); |
Lisa Nguyen | 3e6e3b3 | 2013-12-11 03:09:22 -0300 | [diff] [blame] | 363 | return ret ? -ETIMEDOUT : 0; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | /* |
| 367 | * vpfe_pipeline_set_stream() - Enable/disable streaming on a pipeline |
| 368 | * @vpfe_dev: VPFE device |
| 369 | * @pipe: VPFE pipeline |
| 370 | * @state: Stream state (stopped or active) |
| 371 | * |
| 372 | * Set the pipeline to the given stream state. |
| 373 | * |
Masanari Iida | 2f9e96c | 2013-03-26 11:23:28 -0300 | [diff] [blame] | 374 | * Return 0 if successful, or the return value of the failed video::s_stream |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 375 | * operation otherwise. |
| 376 | */ |
| 377 | static int vpfe_pipeline_set_stream(struct vpfe_pipeline *pipe, |
| 378 | enum vpfe_pipeline_stream_state state) |
| 379 | { |
| 380 | if (state == VPFE_PIPELINE_STREAM_STOPPED) |
| 381 | return vpfe_pipeline_disable(pipe); |
| 382 | |
| 383 | return vpfe_pipeline_enable(pipe); |
| 384 | } |
| 385 | |
| 386 | static int all_videos_stopped(struct vpfe_video_device *video) |
| 387 | { |
| 388 | struct vpfe_pipeline *pipe = &video->pipe; |
| 389 | int i; |
| 390 | |
| 391 | for (i = 0; i < pipe->input_num; i++) |
| 392 | if (pipe->inputs[i]->started) |
| 393 | return 0; |
| 394 | for (i = 0; i < pipe->output_num; i++) |
| 395 | if (pipe->outputs[i]->started) |
| 396 | return 0; |
| 397 | return 1; |
| 398 | } |
| 399 | |
| 400 | /* |
| 401 | * vpfe_open() - open video device |
| 402 | * @file: file pointer |
| 403 | * |
| 404 | * initialize media pipeline state, allocate memory for file handle |
| 405 | * |
| 406 | * Return 0 if successful, or the return -ENODEV otherwise. |
| 407 | */ |
| 408 | static int vpfe_open(struct file *file) |
| 409 | { |
| 410 | struct vpfe_video_device *video = video_drvdata(file); |
| 411 | struct vpfe_fh *handle; |
| 412 | |
| 413 | /* Allocate memory for the file handle object */ |
| 414 | handle = kzalloc(sizeof(struct vpfe_fh), GFP_KERNEL); |
| 415 | |
sayli karnik | a0db9c0 | 2016-09-16 23:29:30 +0530 | [diff] [blame] | 416 | if (!handle) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 417 | return -ENOMEM; |
| 418 | |
| 419 | v4l2_fh_init(&handle->vfh, &video->video_dev); |
| 420 | v4l2_fh_add(&handle->vfh); |
| 421 | |
| 422 | mutex_lock(&video->lock); |
| 423 | /* If decoder is not initialized. initialize it */ |
| 424 | if (!video->initialized && vpfe_update_pipe_state(video)) { |
| 425 | mutex_unlock(&video->lock); |
Shailendra Verma | 209085e | 2016-11-24 23:57:34 -0500 | [diff] [blame] | 426 | v4l2_fh_del(&handle->vfh); |
| 427 | v4l2_fh_exit(&handle->vfh); |
| 428 | kfree(handle); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 429 | return -ENODEV; |
| 430 | } |
| 431 | /* Increment device users counter */ |
| 432 | video->usrs++; |
| 433 | /* Set io_allowed member to false */ |
| 434 | handle->io_allowed = 0; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 435 | handle->video = video; |
| 436 | file->private_data = &handle->vfh; |
| 437 | mutex_unlock(&video->lock); |
| 438 | |
| 439 | return 0; |
| 440 | } |
| 441 | |
| 442 | /* get the next buffer available from dma queue */ |
| 443 | static unsigned long |
| 444 | vpfe_video_get_next_buffer(struct vpfe_video_device *video) |
| 445 | { |
| 446 | video->cur_frm = video->next_frm = |
| 447 | list_entry(video->dma_queue.next, |
| 448 | struct vpfe_cap_buffer, list); |
| 449 | |
| 450 | list_del(&video->next_frm->list); |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 451 | video->next_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE; |
| 452 | return vb2_dma_contig_plane_dma_addr(&video->next_frm->vb.vb2_buf, 0); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | /* schedule the next buffer which is available on dma queue */ |
| 456 | void vpfe_video_schedule_next_buffer(struct vpfe_video_device *video) |
| 457 | { |
| 458 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 459 | unsigned long addr; |
| 460 | |
| 461 | if (list_empty(&video->dma_queue)) |
| 462 | return; |
| 463 | |
| 464 | video->next_frm = list_entry(video->dma_queue.next, |
| 465 | struct vpfe_cap_buffer, list); |
| 466 | |
Thaissa Falbo | b369a87 | 2016-02-15 02:52:49 -0200 | [diff] [blame] | 467 | if (video->pipe.state == VPFE_PIPELINE_STREAM_SINGLESHOT) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 468 | video->cur_frm = video->next_frm; |
| 469 | |
| 470 | list_del(&video->next_frm->list); |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 471 | video->next_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE; |
| 472 | addr = vb2_dma_contig_plane_dma_addr(&video->next_frm->vb.vb2_buf, 0); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 473 | video->ops->queue(vpfe_dev, addr); |
| 474 | video->state = VPFE_VIDEO_BUFFER_QUEUED; |
| 475 | } |
| 476 | |
| 477 | /* schedule the buffer for capturing bottom field */ |
| 478 | void vpfe_video_schedule_bottom_field(struct vpfe_video_device *video) |
| 479 | { |
| 480 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 481 | unsigned long addr; |
| 482 | |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 483 | addr = vb2_dma_contig_plane_dma_addr(&video->cur_frm->vb.vb2_buf, 0); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 484 | addr += video->field_off; |
| 485 | video->ops->queue(vpfe_dev, addr); |
| 486 | } |
| 487 | |
| 488 | /* make buffer available for dequeue */ |
| 489 | void vpfe_video_process_buffer_complete(struct vpfe_video_device *video) |
| 490 | { |
| 491 | struct vpfe_pipeline *pipe = &video->pipe; |
| 492 | |
Junghak Sung | d6dd645 | 2015-11-03 08:16:37 -0200 | [diff] [blame] | 493 | video->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns(); |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 494 | vb2_buffer_done(&video->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 495 | if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) |
| 496 | video->cur_frm = video->next_frm; |
| 497 | } |
| 498 | |
| 499 | /* vpfe_stop_capture() - stop streaming */ |
| 500 | static void vpfe_stop_capture(struct vpfe_video_device *video) |
| 501 | { |
| 502 | struct vpfe_pipeline *pipe = &video->pipe; |
| 503 | |
| 504 | video->started = 0; |
| 505 | |
| 506 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
| 507 | return; |
| 508 | if (all_videos_stopped(video)) |
| 509 | vpfe_pipeline_set_stream(pipe, |
| 510 | VPFE_PIPELINE_STREAM_STOPPED); |
| 511 | } |
| 512 | |
| 513 | /* |
| 514 | * vpfe_release() - release video device |
| 515 | * @file: file pointer |
| 516 | * |
| 517 | * deletes buffer queue, frees the buffers and the vpfe file handle |
| 518 | * |
| 519 | * Return 0 |
| 520 | */ |
| 521 | static int vpfe_release(struct file *file) |
| 522 | { |
| 523 | struct vpfe_video_device *video = video_drvdata(file); |
| 524 | struct v4l2_fh *vfh = file->private_data; |
| 525 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 526 | struct vpfe_fh *fh = container_of(vfh, struct vpfe_fh, vfh); |
| 527 | |
| 528 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n"); |
| 529 | |
| 530 | /* Get the device lock */ |
| 531 | mutex_lock(&video->lock); |
| 532 | /* if this instance is doing IO */ |
| 533 | if (fh->io_allowed) { |
| 534 | if (video->started) { |
| 535 | vpfe_stop_capture(video); |
Thaissa Falbo | 9c5d893 | 2016-02-15 02:07:41 -0200 | [diff] [blame] | 536 | /* |
| 537 | * mark pipe state as stopped in vpfe_release(), |
| 538 | * as app might call streamon() after streamoff() |
| 539 | * in which case driver has to start streaming. |
| 540 | */ |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 541 | video->pipe.state = VPFE_PIPELINE_STREAM_STOPPED; |
| 542 | vb2_streamoff(&video->buffer_queue, |
| 543 | video->buffer_queue.type); |
| 544 | } |
| 545 | video->io_usrs = 0; |
| 546 | /* Free buffers allocated */ |
| 547 | vb2_queue_release(&video->buffer_queue); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 548 | } |
| 549 | /* Decrement device users counter */ |
| 550 | video->usrs--; |
Lad, Prabhakar | 933fd6e | 2014-03-23 03:37:24 -0300 | [diff] [blame] | 551 | v4l2_fh_del(&fh->vfh); |
| 552 | v4l2_fh_exit(&fh->vfh); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 553 | /* If this is the last file handle */ |
| 554 | if (!video->usrs) |
| 555 | video->initialized = 0; |
| 556 | mutex_unlock(&video->lock); |
| 557 | file->private_data = NULL; |
| 558 | /* Free memory allocated to file handle object */ |
| 559 | v4l2_fh_del(vfh); |
| 560 | kzfree(fh); |
| 561 | return 0; |
| 562 | } |
| 563 | |
| 564 | /* |
| 565 | * vpfe_mmap() - It is used to map kernel space buffers |
| 566 | * into user spaces |
| 567 | */ |
| 568 | static int vpfe_mmap(struct file *file, struct vm_area_struct *vma) |
| 569 | { |
| 570 | struct vpfe_video_device *video = video_drvdata(file); |
| 571 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 572 | |
| 573 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n"); |
| 574 | return vb2_mmap(&video->buffer_queue, vma); |
| 575 | } |
| 576 | |
| 577 | /* |
| 578 | * vpfe_poll() - It is used for select/poll system call |
| 579 | */ |
| 580 | static unsigned int vpfe_poll(struct file *file, poll_table *wait) |
| 581 | { |
| 582 | struct vpfe_video_device *video = video_drvdata(file); |
| 583 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 584 | |
| 585 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n"); |
| 586 | if (video->started) |
| 587 | return vb2_poll(&video->buffer_queue, file, wait); |
| 588 | return 0; |
| 589 | } |
| 590 | |
| 591 | /* vpfe capture driver file operations */ |
| 592 | static const struct v4l2_file_operations vpfe_fops = { |
| 593 | .owner = THIS_MODULE, |
| 594 | .open = vpfe_open, |
| 595 | .release = vpfe_release, |
| 596 | .unlocked_ioctl = video_ioctl2, |
| 597 | .mmap = vpfe_mmap, |
| 598 | .poll = vpfe_poll |
| 599 | }; |
| 600 | |
| 601 | /* |
| 602 | * vpfe_querycap() - query capabilities of video device |
| 603 | * @file: file pointer |
| 604 | * @priv: void pointer |
| 605 | * @cap: pointer to v4l2_capability structure |
| 606 | * |
| 607 | * fills v4l2 capabilities structure |
| 608 | * |
| 609 | * Return 0 |
| 610 | */ |
| 611 | static int vpfe_querycap(struct file *file, void *priv, |
| 612 | struct v4l2_capability *cap) |
| 613 | { |
| 614 | struct vpfe_video_device *video = video_drvdata(file); |
| 615 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 616 | |
| 617 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n"); |
| 618 | |
| 619 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
Hans Verkuil | 57e774c | 2014-11-24 06:37:22 -0300 | [diff] [blame] | 620 | cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 621 | else |
Hans Verkuil | 57e774c | 2014-11-24 06:37:22 -0300 | [diff] [blame] | 622 | cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; |
| 623 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT | |
| 624 | V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 625 | strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver)); |
| 626 | strlcpy(cap->bus_info, "VPFE", sizeof(cap->bus_info)); |
| 627 | strlcpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card)); |
| 628 | |
| 629 | return 0; |
| 630 | } |
| 631 | |
| 632 | /* |
| 633 | * vpfe_g_fmt() - get the format which is active on video device |
| 634 | * @file: file pointer |
| 635 | * @priv: void pointer |
| 636 | * @fmt: pointer to v4l2_format structure |
| 637 | * |
| 638 | * fills v4l2 format structure with active format |
| 639 | * |
| 640 | * Return 0 |
| 641 | */ |
| 642 | static int vpfe_g_fmt(struct file *file, void *priv, |
| 643 | struct v4l2_format *fmt) |
| 644 | { |
| 645 | struct vpfe_video_device *video = video_drvdata(file); |
| 646 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 647 | |
| 648 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt\n"); |
| 649 | /* Fill in the information about format */ |
| 650 | *fmt = video->fmt; |
| 651 | return 0; |
| 652 | } |
| 653 | |
| 654 | /* |
| 655 | * vpfe_enum_fmt() - enum formats supported on media chain |
| 656 | * @file: file pointer |
| 657 | * @priv: void pointer |
| 658 | * @fmt: pointer to v4l2_fmtdesc structure |
| 659 | * |
| 660 | * fills v4l2_fmtdesc structure with output format set on adjacent subdev, |
| 661 | * only one format is enumearted as subdevs are already configured |
| 662 | * |
Masanari Iida | 2f9e96c | 2013-03-26 11:23:28 -0300 | [diff] [blame] | 663 | * Return 0 if successful, error code otherwise |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 664 | */ |
| 665 | static int vpfe_enum_fmt(struct file *file, void *priv, |
| 666 | struct v4l2_fmtdesc *fmt) |
| 667 | { |
| 668 | struct vpfe_video_device *video = video_drvdata(file); |
| 669 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 670 | struct v4l2_subdev_format sd_fmt; |
| 671 | struct v4l2_mbus_framefmt mbus; |
| 672 | struct v4l2_subdev *subdev; |
| 673 | struct v4l2_format format; |
| 674 | struct media_pad *remote; |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 675 | int ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 676 | |
| 677 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt\n"); |
| 678 | |
Thaissa Falbo | 9c5d893 | 2016-02-15 02:07:41 -0200 | [diff] [blame] | 679 | /* |
| 680 | * since already subdev pad format is set, |
| 681 | * only one pixel format is available |
| 682 | */ |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 683 | if (fmt->index > 0) { |
| 684 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid index\n"); |
| 685 | return -EINVAL; |
| 686 | } |
| 687 | /* get the remote pad */ |
Andrzej Hajda | 1bddf1b | 2013-06-03 05:16:13 -0300 | [diff] [blame] | 688 | remote = media_entity_remote_pad(&video->pad); |
sayli karnik | a0db9c0 | 2016-09-16 23:29:30 +0530 | [diff] [blame] | 689 | if (!remote) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 690 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 691 | "invalid remote pad for video node\n"); |
| 692 | return -EINVAL; |
| 693 | } |
| 694 | /* get the remote subdev */ |
| 695 | subdev = vpfe_video_remote_subdev(video, NULL); |
sayli karnik | a0db9c0 | 2016-09-16 23:29:30 +0530 | [diff] [blame] | 696 | if (!subdev) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 697 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 698 | "invalid remote subdev for video node\n"); |
| 699 | return -EINVAL; |
| 700 | } |
| 701 | sd_fmt.pad = remote->index; |
| 702 | sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 703 | /* get output format of remote subdev */ |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 704 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &sd_fmt); |
| 705 | if (ret) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 706 | v4l2_err(&vpfe_dev->v4l2_dev, |
| 707 | "invalid remote subdev for video node\n"); |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 708 | return ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 709 | } |
| 710 | /* convert to pix format */ |
| 711 | mbus.code = sd_fmt.format.code; |
| 712 | mbus_to_pix(&mbus, &format.fmt.pix); |
| 713 | /* copy the result */ |
| 714 | fmt->pixelformat = format.fmt.pix.pixelformat; |
| 715 | |
| 716 | return 0; |
| 717 | } |
| 718 | |
| 719 | /* |
| 720 | * vpfe_s_fmt() - set the format on video device |
| 721 | * @file: file pointer |
| 722 | * @priv: void pointer |
| 723 | * @fmt: pointer to v4l2_format structure |
| 724 | * |
| 725 | * validate and set the format on video device |
| 726 | * |
| 727 | * Return 0 on success, error code otherwise |
| 728 | */ |
| 729 | static int vpfe_s_fmt(struct file *file, void *priv, |
| 730 | struct v4l2_format *fmt) |
| 731 | { |
| 732 | struct vpfe_video_device *video = video_drvdata(file); |
| 733 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 734 | struct v4l2_format format; |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 735 | int ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 736 | |
| 737 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt\n"); |
| 738 | /* If streaming is started, return error */ |
| 739 | if (video->started) { |
| 740 | v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n"); |
| 741 | return -EBUSY; |
| 742 | } |
| 743 | /* get adjacent subdev's output pad format */ |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 744 | ret = __vpfe_video_get_format(video, &format); |
| 745 | if (ret) |
| 746 | return ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 747 | *fmt = format; |
| 748 | video->fmt = *fmt; |
| 749 | return 0; |
| 750 | } |
| 751 | |
| 752 | /* |
| 753 | * vpfe_try_fmt() - try the format on video device |
| 754 | * @file: file pointer |
| 755 | * @priv: void pointer |
| 756 | * @fmt: pointer to v4l2_format structure |
| 757 | * |
| 758 | * validate the format, update with correct format |
| 759 | * based on output format set on adjacent subdev |
| 760 | * |
| 761 | * Return 0 on success, error code otherwise |
| 762 | */ |
| 763 | static int vpfe_try_fmt(struct file *file, void *priv, |
| 764 | struct v4l2_format *fmt) |
| 765 | { |
| 766 | struct vpfe_video_device *video = video_drvdata(file); |
| 767 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 768 | struct v4l2_format format; |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 769 | int ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 770 | |
| 771 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt\n"); |
| 772 | /* get adjacent subdev's output pad format */ |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 773 | ret = __vpfe_video_get_format(video, &format); |
| 774 | if (ret) |
| 775 | return ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 776 | |
| 777 | *fmt = format; |
| 778 | return 0; |
| 779 | } |
| 780 | |
| 781 | /* |
| 782 | * vpfe_enum_input() - enum inputs supported on media chain |
| 783 | * @file: file pointer |
| 784 | * @priv: void pointer |
| 785 | * @fmt: pointer to v4l2_fmtdesc structure |
| 786 | * |
| 787 | * fills v4l2_input structure with input available on media chain, |
| 788 | * only one input is enumearted as media chain is setup by this time |
| 789 | * |
Masanari Iida | 2f9e96c | 2013-03-26 11:23:28 -0300 | [diff] [blame] | 790 | * Return 0 if successful, -EINVAL is media chain is invalid |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 791 | */ |
| 792 | static int vpfe_enum_input(struct file *file, void *priv, |
| 793 | struct v4l2_input *inp) |
| 794 | { |
| 795 | struct vpfe_video_device *video = video_drvdata(file); |
| 796 | struct vpfe_ext_subdev_info *sdinfo = video->current_ext_subdev; |
| 797 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 798 | |
| 799 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n"); |
Masanari Iida | 2f9e96c | 2013-03-26 11:23:28 -0300 | [diff] [blame] | 800 | /* enumerate from the subdev user has chosen through mc */ |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 801 | if (inp->index < sdinfo->num_inputs) { |
| 802 | memcpy(inp, &sdinfo->inputs[inp->index], |
| 803 | sizeof(struct v4l2_input)); |
| 804 | return 0; |
| 805 | } |
| 806 | return -EINVAL; |
| 807 | } |
| 808 | |
| 809 | /* |
| 810 | * vpfe_g_input() - get index of the input which is active |
| 811 | * @file: file pointer |
| 812 | * @priv: void pointer |
| 813 | * @index: pointer to unsigned int |
| 814 | * |
| 815 | * set index with input index which is active |
| 816 | */ |
| 817 | static int vpfe_g_input(struct file *file, void *priv, unsigned int *index) |
| 818 | { |
| 819 | struct vpfe_video_device *video = video_drvdata(file); |
| 820 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 821 | |
| 822 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n"); |
| 823 | |
| 824 | *index = video->current_input; |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | /* |
| 829 | * vpfe_s_input() - set input which is pointed by input index |
| 830 | * @file: file pointer |
| 831 | * @priv: void pointer |
| 832 | * @index: pointer to unsigned int |
| 833 | * |
| 834 | * set input on external subdev |
| 835 | * |
| 836 | * Return 0 on success, error code otherwise |
| 837 | */ |
| 838 | static int vpfe_s_input(struct file *file, void *priv, unsigned int index) |
| 839 | { |
| 840 | struct vpfe_video_device *video = video_drvdata(file); |
| 841 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 842 | struct vpfe_ext_subdev_info *sdinfo; |
| 843 | struct vpfe_route *route; |
| 844 | struct v4l2_input *inps; |
| 845 | u32 output; |
| 846 | u32 input; |
| 847 | int ret; |
| 848 | int i; |
| 849 | |
| 850 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n"); |
| 851 | |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 852 | ret = mutex_lock_interruptible(&video->lock); |
| 853 | if (ret) |
| 854 | return ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 855 | /* |
| 856 | * If streaming is started return device busy |
| 857 | * error |
| 858 | */ |
| 859 | if (video->started) { |
| 860 | v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n"); |
| 861 | ret = -EBUSY; |
| 862 | goto unlock_out; |
| 863 | } |
| 864 | |
| 865 | sdinfo = video->current_ext_subdev; |
| 866 | if (!sdinfo->registered) { |
| 867 | ret = -EINVAL; |
| 868 | goto unlock_out; |
| 869 | } |
| 870 | if (vpfe_dev->cfg->setup_input && |
| 871 | vpfe_dev->cfg->setup_input(sdinfo->grp_id) < 0) { |
| 872 | ret = -EFAULT; |
| 873 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, |
| 874 | "couldn't setup input for %s\n", |
| 875 | sdinfo->module_name); |
| 876 | goto unlock_out; |
| 877 | } |
| 878 | route = &sdinfo->routes[index]; |
| 879 | if (route && sdinfo->can_route) { |
| 880 | input = route->input; |
| 881 | output = route->output; |
| 882 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, |
| 883 | sdinfo->grp_id, video, |
| 884 | s_routing, input, output, 0); |
| 885 | if (ret) { |
| 886 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, |
| 887 | "s_input:error in setting input in decoder\n"); |
| 888 | ret = -EINVAL; |
| 889 | goto unlock_out; |
| 890 | } |
| 891 | } |
| 892 | /* set standards set by subdev in video device */ |
| 893 | for (i = 0; i < sdinfo->num_inputs; i++) { |
| 894 | inps = &sdinfo->inputs[i]; |
| 895 | video->video_dev.tvnorms |= inps->std; |
| 896 | } |
| 897 | video->current_input = index; |
| 898 | unlock_out: |
| 899 | mutex_unlock(&video->lock); |
| 900 | return ret; |
| 901 | } |
| 902 | |
| 903 | /* |
| 904 | * vpfe_querystd() - query std which is being input on external subdev |
| 905 | * @file: file pointer |
| 906 | * @priv: void pointer |
| 907 | * @std_id: pointer to v4l2_std_id structure |
| 908 | * |
| 909 | * call external subdev through v4l2_device_call_until_err to |
| 910 | * get the std that is being active. |
| 911 | * |
| 912 | * Return 0 on success, error code otherwise |
| 913 | */ |
| 914 | static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id) |
| 915 | { |
| 916 | struct vpfe_video_device *video = video_drvdata(file); |
| 917 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 918 | struct vpfe_ext_subdev_info *sdinfo; |
| 919 | int ret; |
| 920 | |
| 921 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n"); |
| 922 | |
| 923 | ret = mutex_lock_interruptible(&video->lock); |
| 924 | sdinfo = video->current_ext_subdev; |
| 925 | if (ret) |
| 926 | return ret; |
| 927 | /* Call querystd function of decoder device */ |
| 928 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, |
| 929 | video, querystd, std_id); |
| 930 | mutex_unlock(&video->lock); |
| 931 | return ret; |
| 932 | } |
| 933 | |
| 934 | /* |
| 935 | * vpfe_s_std() - set std on external subdev |
| 936 | * @file: file pointer |
| 937 | * @priv: void pointer |
| 938 | * @std_id: pointer to v4l2_std_id structure |
| 939 | * |
| 940 | * set std pointed by std_id on external subdev by calling it using |
| 941 | * v4l2_device_call_until_err |
| 942 | * |
| 943 | * Return 0 on success, error code otherwise |
| 944 | */ |
Hans Verkuil | 314527a | 2013-03-15 06:10:40 -0300 | [diff] [blame] | 945 | static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 946 | { |
| 947 | struct vpfe_video_device *video = video_drvdata(file); |
| 948 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 949 | struct vpfe_ext_subdev_info *sdinfo; |
| 950 | int ret; |
| 951 | |
| 952 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n"); |
| 953 | |
| 954 | /* Call decoder driver function to set the standard */ |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 955 | ret = mutex_lock_interruptible(&video->lock); |
| 956 | if (ret) |
| 957 | return ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 958 | sdinfo = video->current_ext_subdev; |
| 959 | /* If streaming is started, return device busy error */ |
| 960 | if (video->started) { |
| 961 | v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n"); |
| 962 | ret = -EBUSY; |
| 963 | goto unlock_out; |
| 964 | } |
| 965 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, |
Laurent Pinchart | 8774bed | 2014-04-28 16:53:01 -0300 | [diff] [blame] | 966 | video, s_std, std_id); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 967 | if (ret < 0) { |
| 968 | v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n"); |
| 969 | video->stdid = V4L2_STD_UNKNOWN; |
| 970 | goto unlock_out; |
| 971 | } |
Hans Verkuil | 314527a | 2013-03-15 06:10:40 -0300 | [diff] [blame] | 972 | video->stdid = std_id; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 973 | unlock_out: |
| 974 | mutex_unlock(&video->lock); |
| 975 | return ret; |
| 976 | } |
| 977 | |
| 978 | static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *tvnorm) |
| 979 | { |
| 980 | struct vpfe_video_device *video = video_drvdata(file); |
| 981 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 982 | |
| 983 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_std\n"); |
| 984 | *tvnorm = video->stdid; |
| 985 | return 0; |
| 986 | } |
| 987 | |
| 988 | /* |
| 989 | * vpfe_enum_dv_timings() - enumerate dv_timings which are supported by |
| 990 | * to external subdev |
| 991 | * @file: file pointer |
| 992 | * @priv: void pointer |
| 993 | * @timings: pointer to v4l2_enum_dv_timings structure |
| 994 | * |
| 995 | * enum dv_timings's which are supported by external subdev through |
| 996 | * v4l2_subdev_call |
| 997 | * |
| 998 | * Return 0 on success, error code otherwise |
| 999 | */ |
| 1000 | static int |
| 1001 | vpfe_enum_dv_timings(struct file *file, void *fh, |
| 1002 | struct v4l2_enum_dv_timings *timings) |
| 1003 | { |
| 1004 | struct vpfe_video_device *video = video_drvdata(file); |
| 1005 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1006 | struct v4l2_subdev *subdev = video->current_ext_subdev->subdev; |
| 1007 | |
Laurent Pinchart | 0eda185 | 2014-01-31 09:04:19 -0300 | [diff] [blame] | 1008 | timings->pad = 0; |
| 1009 | |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1010 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_dv_timings\n"); |
Laurent Pinchart | 0eda185 | 2014-01-31 09:04:19 -0300 | [diff] [blame] | 1011 | return v4l2_subdev_call(subdev, pad, enum_dv_timings, timings); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1012 | } |
| 1013 | |
| 1014 | /* |
| 1015 | * vpfe_query_dv_timings() - query the dv_timings which is being input |
| 1016 | * to external subdev |
| 1017 | * @file: file pointer |
| 1018 | * @priv: void pointer |
| 1019 | * @timings: pointer to v4l2_dv_timings structure |
| 1020 | * |
| 1021 | * get dv_timings which is being input on external subdev through |
| 1022 | * v4l2_subdev_call |
| 1023 | * |
| 1024 | * Return 0 on success, error code otherwise |
| 1025 | */ |
| 1026 | static int |
| 1027 | vpfe_query_dv_timings(struct file *file, void *fh, |
| 1028 | struct v4l2_dv_timings *timings) |
| 1029 | { |
| 1030 | struct vpfe_video_device *video = video_drvdata(file); |
| 1031 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1032 | struct v4l2_subdev *subdev = video->current_ext_subdev->subdev; |
| 1033 | |
| 1034 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_query_dv_timings\n"); |
| 1035 | return v4l2_subdev_call(subdev, video, query_dv_timings, timings); |
| 1036 | } |
| 1037 | |
| 1038 | /* |
Hans Verkuil | 4bd3bb7 | 2013-02-15 14:51:23 -0300 | [diff] [blame] | 1039 | * vpfe_s_dv_timings() - set dv_timings on external subdev |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1040 | * @file: file pointer |
| 1041 | * @priv: void pointer |
| 1042 | * @timings: pointer to v4l2_dv_timings structure |
| 1043 | * |
Hans Verkuil | 4bd3bb7 | 2013-02-15 14:51:23 -0300 | [diff] [blame] | 1044 | * set dv_timings pointed by timings on external subdev through |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1045 | * v4l2_device_call_until_err, this configures amplifier also |
| 1046 | * |
| 1047 | * Return 0 on success, error code otherwise |
| 1048 | */ |
| 1049 | static int |
| 1050 | vpfe_s_dv_timings(struct file *file, void *fh, |
| 1051 | struct v4l2_dv_timings *timings) |
| 1052 | { |
| 1053 | struct vpfe_video_device *video = video_drvdata(file); |
| 1054 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1055 | |
| 1056 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_dv_timings\n"); |
| 1057 | |
| 1058 | video->stdid = V4L2_STD_UNKNOWN; |
| 1059 | return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, |
| 1060 | video->current_ext_subdev->grp_id, |
| 1061 | video, s_dv_timings, timings); |
| 1062 | } |
| 1063 | |
| 1064 | /* |
Hans Verkuil | 4bd3bb7 | 2013-02-15 14:51:23 -0300 | [diff] [blame] | 1065 | * vpfe_g_dv_timings() - get dv_timings which is set on external subdev |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1066 | * @file: file pointer |
| 1067 | * @priv: void pointer |
| 1068 | * @timings: pointer to v4l2_dv_timings structure |
| 1069 | * |
Hans Verkuil | 4bd3bb7 | 2013-02-15 14:51:23 -0300 | [diff] [blame] | 1070 | * get dv_timings which is set on external subdev through |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1071 | * v4l2_subdev_call |
| 1072 | * |
| 1073 | * Return 0 on success, error code otherwise |
| 1074 | */ |
| 1075 | static int |
| 1076 | vpfe_g_dv_timings(struct file *file, void *fh, |
| 1077 | struct v4l2_dv_timings *timings) |
| 1078 | { |
| 1079 | struct vpfe_video_device *video = video_drvdata(file); |
| 1080 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1081 | struct v4l2_subdev *subdev = video->current_ext_subdev->subdev; |
| 1082 | |
| 1083 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_dv_timings\n"); |
| 1084 | return v4l2_subdev_call(subdev, video, g_dv_timings, timings); |
| 1085 | } |
| 1086 | |
| 1087 | /* |
| 1088 | * Videobuf operations |
| 1089 | */ |
| 1090 | /* |
| 1091 | * vpfe_buffer_queue_setup : Callback function for buffer setup. |
| 1092 | * @vq: vb2_queue ptr |
| 1093 | * @fmt: v4l2 format |
| 1094 | * @nbuffers: ptr to number of buffers requested by application |
| 1095 | * @nplanes:: contains number of distinct video planes needed to hold a frame |
| 1096 | * @sizes[]: contains the size (in bytes) of each plane. |
Hans Verkuil | 36c0f8b | 2016-04-15 09:15:05 -0300 | [diff] [blame] | 1097 | * @alloc_devs: ptr to allocation context |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1098 | * |
| 1099 | * This callback function is called when reqbuf() is called to adjust |
| 1100 | * the buffer nbuffers and buffer size |
| 1101 | */ |
| 1102 | static int |
Hans Verkuil | df9ecb0 | 2015-10-28 00:50:37 -0200 | [diff] [blame] | 1103 | vpfe_buffer_queue_setup(struct vb2_queue *vq, |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1104 | unsigned int *nbuffers, unsigned int *nplanes, |
Hans Verkuil | 36c0f8b | 2016-04-15 09:15:05 -0300 | [diff] [blame] | 1105 | unsigned int sizes[], struct device *alloc_devs[]) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1106 | { |
| 1107 | struct vpfe_fh *fh = vb2_get_drv_priv(vq); |
| 1108 | struct vpfe_video_device *video = fh->video; |
| 1109 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1110 | unsigned long size; |
| 1111 | |
| 1112 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_queue_setup\n"); |
| 1113 | size = video->fmt.fmt.pix.sizeimage; |
| 1114 | |
Lad, Prabhakar | 171fe6d | 2015-05-25 12:34:28 -0300 | [diff] [blame] | 1115 | if (vq->num_buffers + *nbuffers < 3) |
| 1116 | *nbuffers = 3 - vq->num_buffers; |
| 1117 | |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1118 | *nplanes = 1; |
| 1119 | sizes[0] = size; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1120 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, |
| 1121 | "nbuffers=%d, size=%lu\n", *nbuffers, size); |
| 1122 | return 0; |
| 1123 | } |
| 1124 | |
| 1125 | /* |
| 1126 | * vpfe_buffer_prepare : callback function for buffer prepare |
| 1127 | * @vb: ptr to vb2_buffer |
| 1128 | * |
| 1129 | * This is the callback function for buffer prepare when vb2_qbuf() |
| 1130 | * function is called. The buffer is prepared and user space virtual address |
| 1131 | * or user address is converted into physical address |
| 1132 | */ |
| 1133 | static int vpfe_buffer_prepare(struct vb2_buffer *vb) |
| 1134 | { |
| 1135 | struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); |
| 1136 | struct vpfe_video_device *video = fh->video; |
| 1137 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1138 | unsigned long addr; |
| 1139 | |
| 1140 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n"); |
| 1141 | |
| 1142 | if (vb->state != VB2_BUF_STATE_ACTIVE && |
| 1143 | vb->state != VB2_BUF_STATE_PREPARED) |
| 1144 | return 0; |
| 1145 | |
| 1146 | /* Initialize buffer */ |
| 1147 | vb2_set_plane_payload(vb, 0, video->fmt.fmt.pix.sizeimage); |
| 1148 | if (vb2_plane_vaddr(vb, 0) && |
| 1149 | vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) |
| 1150 | return -EINVAL; |
| 1151 | |
| 1152 | addr = vb2_dma_contig_plane_dma_addr(vb, 0); |
| 1153 | /* Make sure user addresses are aligned to 32 bytes */ |
| 1154 | if (!ALIGN(addr, 32)) |
| 1155 | return -EINVAL; |
| 1156 | |
| 1157 | return 0; |
| 1158 | } |
| 1159 | |
| 1160 | static void vpfe_buffer_queue(struct vb2_buffer *vb) |
| 1161 | { |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1162 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1163 | /* Get the file handle object and device object */ |
| 1164 | struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); |
| 1165 | struct vpfe_video_device *video = fh->video; |
| 1166 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1167 | struct vpfe_pipeline *pipe = &video->pipe; |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1168 | struct vpfe_cap_buffer *buf = container_of(vbuf, |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1169 | struct vpfe_cap_buffer, vb); |
| 1170 | unsigned long flags; |
| 1171 | unsigned long empty; |
| 1172 | unsigned long addr; |
| 1173 | |
| 1174 | spin_lock_irqsave(&video->dma_queue_lock, flags); |
| 1175 | empty = list_empty(&video->dma_queue); |
| 1176 | /* add the buffer to the DMA queue */ |
| 1177 | list_add_tail(&buf->list, &video->dma_queue); |
| 1178 | spin_unlock_irqrestore(&video->dma_queue_lock, flags); |
| 1179 | /* this case happens in case of single shot */ |
| 1180 | if (empty && video->started && pipe->state == |
| 1181 | VPFE_PIPELINE_STREAM_SINGLESHOT && |
| 1182 | video->state == VPFE_VIDEO_BUFFER_NOT_QUEUED) { |
| 1183 | spin_lock(&video->dma_queue_lock); |
| 1184 | addr = vpfe_video_get_next_buffer(video); |
| 1185 | video->ops->queue(vpfe_dev, addr); |
| 1186 | |
| 1187 | video->state = VPFE_VIDEO_BUFFER_QUEUED; |
| 1188 | spin_unlock(&video->dma_queue_lock); |
| 1189 | |
| 1190 | /* enable h/w each time in single shot */ |
| 1191 | if (vpfe_video_is_pipe_ready(pipe)) |
| 1192 | vpfe_pipeline_set_stream(pipe, |
| 1193 | VPFE_PIPELINE_STREAM_SINGLESHOT); |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | /* vpfe_start_capture() - start streaming on all the subdevs */ |
| 1198 | static int vpfe_start_capture(struct vpfe_video_device *video) |
| 1199 | { |
| 1200 | struct vpfe_pipeline *pipe = &video->pipe; |
| 1201 | int ret = 0; |
| 1202 | |
| 1203 | video->started = 1; |
| 1204 | if (vpfe_video_is_pipe_ready(pipe)) |
| 1205 | ret = vpfe_pipeline_set_stream(pipe, pipe->state); |
| 1206 | |
| 1207 | return ret; |
| 1208 | } |
| 1209 | |
| 1210 | static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) |
| 1211 | { |
| 1212 | struct vpfe_fh *fh = vb2_get_drv_priv(vq); |
| 1213 | struct vpfe_video_device *video = fh->video; |
| 1214 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1215 | unsigned long addr; |
| 1216 | int ret; |
| 1217 | |
| 1218 | ret = mutex_lock_interruptible(&video->lock); |
| 1219 | if (ret) |
| 1220 | goto streamoff; |
| 1221 | |
| 1222 | /* Get the next frame from the buffer queue */ |
| 1223 | video->cur_frm = video->next_frm = |
| 1224 | list_entry(video->dma_queue.next, struct vpfe_cap_buffer, list); |
| 1225 | /* Remove buffer from the buffer queue */ |
| 1226 | list_del(&video->cur_frm->list); |
| 1227 | /* Mark state of the current frame to active */ |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1228 | video->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1229 | /* Initialize field_id and started member */ |
| 1230 | video->field_id = 0; |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1231 | addr = vb2_dma_contig_plane_dma_addr(&video->cur_frm->vb.vb2_buf, 0); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1232 | video->ops->queue(vpfe_dev, addr); |
| 1233 | video->state = VPFE_VIDEO_BUFFER_QUEUED; |
| 1234 | |
| 1235 | ret = vpfe_start_capture(video); |
Lad, Prabhakar | 8f7402a | 2014-03-23 03:37:25 -0300 | [diff] [blame] | 1236 | if (ret) { |
| 1237 | struct vpfe_cap_buffer *buf, *tmp; |
| 1238 | |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1239 | vb2_buffer_done(&video->cur_frm->vb.vb2_buf, |
| 1240 | VB2_BUF_STATE_QUEUED); |
Lad, Prabhakar | 8f7402a | 2014-03-23 03:37:25 -0300 | [diff] [blame] | 1241 | list_for_each_entry_safe(buf, tmp, &video->dma_queue, list) { |
| 1242 | list_del(&buf->list); |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1243 | vb2_buffer_done(&buf->vb.vb2_buf, |
| 1244 | VB2_BUF_STATE_QUEUED); |
Lad, Prabhakar | 8f7402a | 2014-03-23 03:37:25 -0300 | [diff] [blame] | 1245 | } |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1246 | goto unlock_out; |
Lad, Prabhakar | 8f7402a | 2014-03-23 03:37:25 -0300 | [diff] [blame] | 1247 | } |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1248 | |
| 1249 | mutex_unlock(&video->lock); |
| 1250 | |
| 1251 | return ret; |
| 1252 | unlock_out: |
| 1253 | mutex_unlock(&video->lock); |
| 1254 | streamoff: |
| 1255 | ret = vb2_streamoff(&video->buffer_queue, video->buffer_queue.type); |
| 1256 | return 0; |
| 1257 | } |
| 1258 | |
| 1259 | static int vpfe_buffer_init(struct vb2_buffer *vb) |
| 1260 | { |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1261 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
| 1262 | struct vpfe_cap_buffer *buf = container_of(vbuf, |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1263 | struct vpfe_cap_buffer, vb); |
| 1264 | |
| 1265 | INIT_LIST_HEAD(&buf->list); |
| 1266 | return 0; |
| 1267 | } |
| 1268 | |
| 1269 | /* abort streaming and wait for last buffer */ |
Hans Verkuil | e37559b | 2014-04-17 02:47:21 -0300 | [diff] [blame] | 1270 | static void vpfe_stop_streaming(struct vb2_queue *vq) |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1271 | { |
| 1272 | struct vpfe_fh *fh = vb2_get_drv_priv(vq); |
| 1273 | struct vpfe_video_device *video = fh->video; |
| 1274 | |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1275 | /* release all active buffers */ |
Lad, Prabhakar | d891ae5 | 2014-03-23 02:16:46 -0300 | [diff] [blame] | 1276 | if (video->cur_frm == video->next_frm) { |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1277 | vb2_buffer_done(&video->cur_frm->vb.vb2_buf, |
| 1278 | VB2_BUF_STATE_ERROR); |
Lad, Prabhakar | d891ae5 | 2014-03-23 02:16:46 -0300 | [diff] [blame] | 1279 | } else { |
| 1280 | if (video->cur_frm != NULL) |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1281 | vb2_buffer_done(&video->cur_frm->vb.vb2_buf, |
Lad, Prabhakar | d891ae5 | 2014-03-23 02:16:46 -0300 | [diff] [blame] | 1282 | VB2_BUF_STATE_ERROR); |
| 1283 | if (video->next_frm != NULL) |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1284 | vb2_buffer_done(&video->next_frm->vb.vb2_buf, |
Lad, Prabhakar | d891ae5 | 2014-03-23 02:16:46 -0300 | [diff] [blame] | 1285 | VB2_BUF_STATE_ERROR); |
| 1286 | } |
| 1287 | |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1288 | while (!list_empty(&video->dma_queue)) { |
| 1289 | video->next_frm = list_entry(video->dma_queue.next, |
| 1290 | struct vpfe_cap_buffer, list); |
| 1291 | list_del(&video->next_frm->list); |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1292 | vb2_buffer_done(&video->next_frm->vb.vb2_buf, |
| 1293 | VB2_BUF_STATE_ERROR); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1294 | } |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1295 | } |
| 1296 | |
| 1297 | static void vpfe_buf_cleanup(struct vb2_buffer *vb) |
| 1298 | { |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1299 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1300 | struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); |
| 1301 | struct vpfe_video_device *video = fh->video; |
| 1302 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 1303 | struct vpfe_cap_buffer *buf = container_of(vbuf, |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1304 | struct vpfe_cap_buffer, vb); |
| 1305 | |
| 1306 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buf_cleanup\n"); |
| 1307 | if (vb->state == VB2_BUF_STATE_ACTIVE) |
| 1308 | list_del_init(&buf->list); |
| 1309 | } |
| 1310 | |
| 1311 | static struct vb2_ops video_qops = { |
| 1312 | .queue_setup = vpfe_buffer_queue_setup, |
| 1313 | .buf_init = vpfe_buffer_init, |
| 1314 | .buf_prepare = vpfe_buffer_prepare, |
| 1315 | .start_streaming = vpfe_start_streaming, |
| 1316 | .stop_streaming = vpfe_stop_streaming, |
| 1317 | .buf_cleanup = vpfe_buf_cleanup, |
| 1318 | .buf_queue = vpfe_buffer_queue, |
| 1319 | }; |
| 1320 | |
| 1321 | /* |
| 1322 | * vpfe_reqbufs() - supported REQBUF only once opening |
| 1323 | * the device. |
| 1324 | */ |
| 1325 | static int vpfe_reqbufs(struct file *file, void *priv, |
| 1326 | struct v4l2_requestbuffers *req_buf) |
| 1327 | { |
| 1328 | struct vpfe_video_device *video = video_drvdata(file); |
| 1329 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1330 | struct vpfe_fh *fh = file->private_data; |
| 1331 | struct vb2_queue *q; |
| 1332 | int ret; |
| 1333 | |
| 1334 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n"); |
| 1335 | |
Thaissa Falbo | b369a87 | 2016-02-15 02:52:49 -0200 | [diff] [blame] | 1336 | if (req_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && |
| 1337 | req_buf->type != V4L2_BUF_TYPE_VIDEO_OUTPUT){ |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1338 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n"); |
| 1339 | return -EINVAL; |
| 1340 | } |
| 1341 | |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 1342 | ret = mutex_lock_interruptible(&video->lock); |
| 1343 | if (ret) |
| 1344 | return ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1345 | |
| 1346 | if (video->io_usrs != 0) { |
| 1347 | v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n"); |
| 1348 | ret = -EBUSY; |
| 1349 | goto unlock_out; |
| 1350 | } |
| 1351 | video->memory = req_buf->memory; |
| 1352 | |
| 1353 | /* Initialize videobuf2 queue as per the buffer type */ |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1354 | q = &video->buffer_queue; |
| 1355 | q->type = req_buf->type; |
| 1356 | q->io_modes = VB2_MMAP | VB2_USERPTR; |
| 1357 | q->drv_priv = fh; |
Hans Verkuil | b3379c6 | 2014-02-24 13:51:03 -0300 | [diff] [blame] | 1358 | q->min_buffers_needed = 1; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1359 | q->ops = &video_qops; |
| 1360 | q->mem_ops = &vb2_dma_contig_memops; |
| 1361 | q->buf_struct_size = sizeof(struct vpfe_cap_buffer); |
Lad, Prabhakar | 4f26aa1 | 2015-05-25 12:34:29 -0300 | [diff] [blame] | 1362 | q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
Hans Verkuil | 57813da | 2016-02-15 12:58:44 -0200 | [diff] [blame] | 1363 | q->dev = vpfe_dev->pdev; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1364 | |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 1365 | ret = vb2_queue_init(q); |
| 1366 | if (ret) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1367 | v4l2_err(&vpfe_dev->v4l2_dev, "vb2_queue_init() failed\n"); |
Dan Carpenter | 257349b | 2016-11-18 09:30:24 -0200 | [diff] [blame] | 1368 | goto unlock_out; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1369 | } |
| 1370 | |
| 1371 | fh->io_allowed = 1; |
| 1372 | video->io_usrs = 1; |
| 1373 | INIT_LIST_HEAD(&video->dma_queue); |
| 1374 | ret = vb2_reqbufs(&video->buffer_queue, req_buf); |
| 1375 | |
| 1376 | unlock_out: |
| 1377 | mutex_unlock(&video->lock); |
| 1378 | return ret; |
| 1379 | } |
| 1380 | |
| 1381 | /* |
| 1382 | * vpfe_querybuf() - query buffers for exchange |
| 1383 | */ |
| 1384 | static int vpfe_querybuf(struct file *file, void *priv, |
| 1385 | struct v4l2_buffer *buf) |
| 1386 | { |
| 1387 | struct vpfe_video_device *video = video_drvdata(file); |
| 1388 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1389 | |
| 1390 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n"); |
| 1391 | |
Thaissa Falbo | b369a87 | 2016-02-15 02:52:49 -0200 | [diff] [blame] | 1392 | if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && |
| 1393 | buf->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1394 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); |
| 1395 | return -EINVAL; |
| 1396 | } |
| 1397 | |
| 1398 | if (video->memory != V4L2_MEMORY_MMAP) { |
| 1399 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n"); |
| 1400 | return -EINVAL; |
| 1401 | } |
| 1402 | |
| 1403 | /* Call vb2_querybuf to get information */ |
| 1404 | return vb2_querybuf(&video->buffer_queue, buf); |
| 1405 | } |
| 1406 | |
| 1407 | /* |
| 1408 | * vpfe_qbuf() - queue buffers for capture or processing |
| 1409 | */ |
| 1410 | static int vpfe_qbuf(struct file *file, void *priv, |
| 1411 | struct v4l2_buffer *p) |
| 1412 | { |
| 1413 | struct vpfe_video_device *video = video_drvdata(file); |
| 1414 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1415 | struct vpfe_fh *fh = file->private_data; |
| 1416 | |
| 1417 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n"); |
| 1418 | |
Thaissa Falbo | b369a87 | 2016-02-15 02:52:49 -0200 | [diff] [blame] | 1419 | if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && |
| 1420 | p->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1421 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); |
| 1422 | return -EINVAL; |
| 1423 | } |
| 1424 | /* |
| 1425 | * If this file handle is not allowed to do IO, |
| 1426 | * return error |
| 1427 | */ |
| 1428 | if (!fh->io_allowed) { |
| 1429 | v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n"); |
| 1430 | return -EACCES; |
| 1431 | } |
| 1432 | |
| 1433 | return vb2_qbuf(&video->buffer_queue, p); |
| 1434 | } |
| 1435 | |
| 1436 | /* |
| 1437 | * vpfe_dqbuf() - deque buffer which is done with processing |
| 1438 | */ |
| 1439 | static int vpfe_dqbuf(struct file *file, void *priv, |
| 1440 | struct v4l2_buffer *buf) |
| 1441 | { |
| 1442 | struct vpfe_video_device *video = video_drvdata(file); |
| 1443 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1444 | |
| 1445 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n"); |
| 1446 | |
Thaissa Falbo | b369a87 | 2016-02-15 02:52:49 -0200 | [diff] [blame] | 1447 | if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && |
| 1448 | buf->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1449 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); |
| 1450 | return -EINVAL; |
| 1451 | } |
| 1452 | |
| 1453 | return vb2_dqbuf(&video->buffer_queue, |
| 1454 | buf, (file->f_flags & O_NONBLOCK)); |
| 1455 | } |
| 1456 | |
| 1457 | /* |
Hans Verkuil | 4bd3bb7 | 2013-02-15 14:51:23 -0300 | [diff] [blame] | 1458 | * vpfe_streamon() - start streaming |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1459 | * @file: file pointer |
| 1460 | * @priv: void pointer |
| 1461 | * @buf_type: enum v4l2_buf_type |
| 1462 | * |
| 1463 | * queue buffer onto hardware for capture/processing and |
| 1464 | * start all the subdevs which are in media chain |
| 1465 | * |
| 1466 | * Return 0 on success, error code otherwise |
| 1467 | */ |
| 1468 | static int vpfe_streamon(struct file *file, void *priv, |
| 1469 | enum v4l2_buf_type buf_type) |
| 1470 | { |
| 1471 | struct vpfe_video_device *video = video_drvdata(file); |
| 1472 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1473 | struct vpfe_pipeline *pipe = &video->pipe; |
| 1474 | struct vpfe_fh *fh = file->private_data; |
| 1475 | struct vpfe_ext_subdev_info *sdinfo; |
| 1476 | int ret = -EINVAL; |
| 1477 | |
| 1478 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n"); |
| 1479 | |
Thaissa Falbo | b369a87 | 2016-02-15 02:52:49 -0200 | [diff] [blame] | 1480 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE && |
| 1481 | buf_type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1482 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); |
| 1483 | return ret; |
| 1484 | } |
| 1485 | /* If file handle is not allowed IO, return error */ |
| 1486 | if (!fh->io_allowed) { |
| 1487 | v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n"); |
| 1488 | return -EACCES; |
| 1489 | } |
| 1490 | sdinfo = video->current_ext_subdev; |
| 1491 | /* If buffer queue is empty, return error */ |
| 1492 | if (list_empty(&video->buffer_queue.queued_list)) { |
| 1493 | v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n"); |
| 1494 | return -EIO; |
| 1495 | } |
| 1496 | /* Validate the pipeline */ |
Thaissa Falbo | b369a87 | 2016-02-15 02:52:49 -0200 | [diff] [blame] | 1497 | if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1498 | ret = vpfe_video_validate_pipeline(pipe); |
| 1499 | if (ret < 0) |
| 1500 | return ret; |
| 1501 | } |
| 1502 | /* Call vb2_streamon to start streaming */ |
| 1503 | return vb2_streamon(&video->buffer_queue, buf_type); |
| 1504 | } |
| 1505 | |
| 1506 | /* |
Hans Verkuil | 4bd3bb7 | 2013-02-15 14:51:23 -0300 | [diff] [blame] | 1507 | * vpfe_streamoff() - stop streaming |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1508 | * @file: file pointer |
| 1509 | * @priv: void pointer |
| 1510 | * @buf_type: enum v4l2_buf_type |
| 1511 | * |
| 1512 | * stop all the subdevs which are in media chain |
| 1513 | * |
| 1514 | * Return 0 on success, error code otherwise |
| 1515 | */ |
| 1516 | static int vpfe_streamoff(struct file *file, void *priv, |
| 1517 | enum v4l2_buf_type buf_type) |
| 1518 | { |
| 1519 | struct vpfe_video_device *video = video_drvdata(file); |
| 1520 | struct vpfe_device *vpfe_dev = video->vpfe_dev; |
| 1521 | struct vpfe_fh *fh = file->private_data; |
| 1522 | int ret = 0; |
| 1523 | |
| 1524 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n"); |
| 1525 | |
| 1526 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE && |
| 1527 | buf_type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { |
| 1528 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "Invalid buf type\n"); |
| 1529 | return -EINVAL; |
| 1530 | } |
| 1531 | |
| 1532 | /* If io is allowed for this file handle, return error */ |
| 1533 | if (!fh->io_allowed) { |
| 1534 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "fh->io_allowed\n"); |
| 1535 | return -EACCES; |
| 1536 | } |
| 1537 | |
| 1538 | /* If streaming is not started, return error */ |
| 1539 | if (!video->started) { |
| 1540 | v4l2_err(&vpfe_dev->v4l2_dev, "device is not started\n"); |
| 1541 | return -EINVAL; |
| 1542 | } |
| 1543 | |
Hans Verkuil | 8bbb656 | 2016-04-15 08:58:10 -0300 | [diff] [blame] | 1544 | ret = mutex_lock_interruptible(&video->lock); |
| 1545 | if (ret) |
| 1546 | return ret; |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1547 | |
| 1548 | vpfe_stop_capture(video); |
| 1549 | ret = vb2_streamoff(&video->buffer_queue, buf_type); |
| 1550 | mutex_unlock(&video->lock); |
| 1551 | |
| 1552 | return ret; |
| 1553 | } |
| 1554 | |
| 1555 | /* vpfe capture ioctl operations */ |
| 1556 | static const struct v4l2_ioctl_ops vpfe_ioctl_ops = { |
| 1557 | .vidioc_querycap = vpfe_querycap, |
| 1558 | .vidioc_g_fmt_vid_cap = vpfe_g_fmt, |
| 1559 | .vidioc_s_fmt_vid_cap = vpfe_s_fmt, |
| 1560 | .vidioc_try_fmt_vid_cap = vpfe_try_fmt, |
| 1561 | .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt, |
| 1562 | .vidioc_g_fmt_vid_out = vpfe_g_fmt, |
| 1563 | .vidioc_s_fmt_vid_out = vpfe_s_fmt, |
| 1564 | .vidioc_try_fmt_vid_out = vpfe_try_fmt, |
| 1565 | .vidioc_enum_fmt_vid_out = vpfe_enum_fmt, |
| 1566 | .vidioc_enum_input = vpfe_enum_input, |
| 1567 | .vidioc_g_input = vpfe_g_input, |
| 1568 | .vidioc_s_input = vpfe_s_input, |
| 1569 | .vidioc_querystd = vpfe_querystd, |
| 1570 | .vidioc_s_std = vpfe_s_std, |
| 1571 | .vidioc_g_std = vpfe_g_std, |
| 1572 | .vidioc_enum_dv_timings = vpfe_enum_dv_timings, |
| 1573 | .vidioc_query_dv_timings = vpfe_query_dv_timings, |
| 1574 | .vidioc_s_dv_timings = vpfe_s_dv_timings, |
| 1575 | .vidioc_g_dv_timings = vpfe_g_dv_timings, |
| 1576 | .vidioc_reqbufs = vpfe_reqbufs, |
| 1577 | .vidioc_querybuf = vpfe_querybuf, |
| 1578 | .vidioc_qbuf = vpfe_qbuf, |
| 1579 | .vidioc_dqbuf = vpfe_dqbuf, |
| 1580 | .vidioc_streamon = vpfe_streamon, |
| 1581 | .vidioc_streamoff = vpfe_streamoff, |
| 1582 | }; |
| 1583 | |
| 1584 | /* VPFE video init function */ |
| 1585 | int vpfe_video_init(struct vpfe_video_device *video, const char *name) |
| 1586 | { |
| 1587 | const char *direction; |
| 1588 | int ret; |
| 1589 | |
| 1590 | switch (video->type) { |
| 1591 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| 1592 | direction = "output"; |
| 1593 | video->pad.flags = MEDIA_PAD_FL_SINK; |
| 1594 | video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1595 | break; |
| 1596 | |
| 1597 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| 1598 | direction = "input"; |
| 1599 | video->pad.flags = MEDIA_PAD_FL_SOURCE; |
| 1600 | video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| 1601 | break; |
| 1602 | |
| 1603 | default: |
| 1604 | return -EINVAL; |
| 1605 | } |
| 1606 | /* Initialize field of video device */ |
| 1607 | video->video_dev.release = video_device_release; |
| 1608 | video->video_dev.fops = &vpfe_fops; |
| 1609 | video->video_dev.ioctl_ops = &vpfe_ioctl_ops; |
| 1610 | video->video_dev.minor = -1; |
| 1611 | video->video_dev.tvnorms = 0; |
| 1612 | snprintf(video->video_dev.name, sizeof(video->video_dev.name), |
| 1613 | "DAVINCI VIDEO %s %s", name, direction); |
| 1614 | |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1615 | spin_lock_init(&video->irqlock); |
| 1616 | spin_lock_init(&video->dma_queue_lock); |
| 1617 | mutex_init(&video->lock); |
Mauro Carvalho Chehab | ab22e77 | 2015-12-11 07:44:40 -0200 | [diff] [blame] | 1618 | ret = media_entity_pads_init(&video->video_dev.entity, |
Mauro Carvalho Chehab | 1809510 | 2015-08-06 09:25:57 -0300 | [diff] [blame] | 1619 | 1, &video->pad); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1620 | if (ret < 0) |
| 1621 | return ret; |
| 1622 | |
| 1623 | video_set_drvdata(&video->video_dev, video); |
| 1624 | |
| 1625 | return 0; |
| 1626 | } |
| 1627 | |
| 1628 | /* vpfe video device register function */ |
| 1629 | int vpfe_video_register(struct vpfe_video_device *video, |
| 1630 | struct v4l2_device *vdev) |
| 1631 | { |
| 1632 | int ret; |
| 1633 | |
| 1634 | video->video_dev.v4l2_dev = vdev; |
| 1635 | |
| 1636 | ret = video_register_device(&video->video_dev, VFL_TYPE_GRABBER, -1); |
| 1637 | if (ret < 0) |
| 1638 | pr_err("%s: could not register video device (%d)\n", |
| 1639 | __func__, ret); |
| 1640 | return ret; |
| 1641 | } |
| 1642 | |
| 1643 | /* vpfe video device unregister function */ |
| 1644 | void vpfe_video_unregister(struct vpfe_video_device *video) |
| 1645 | { |
| 1646 | if (video_is_registered(&video->video_dev)) { |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1647 | video_unregister_device(&video->video_dev); |
Sakari Ailus | 7bb151b | 2013-06-11 06:50:49 -0300 | [diff] [blame] | 1648 | media_entity_cleanup(&video->video_dev.entity); |
Manjunath Hadli | 622897d | 2012-11-28 02:03:38 -0300 | [diff] [blame] | 1649 | } |
| 1650 | } |