Venkat Chinta | 686c9e5 | 2018-01-20 14:33:25 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 13 | #include <linux/module.h> |
| 14 | #include <linux/slab.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <media/v4l2-fh.h> |
| 17 | #include <media/v4l2-device.h> |
| 18 | #include <media/v4l2-event.h> |
| 19 | #include <media/v4l2-ioctl.h> |
| 20 | #include <media/cam_req_mgr.h> |
Lakshmi Narayana Kalavala | c2fac45 | 2017-06-12 12:38:07 -0700 | [diff] [blame] | 21 | #include <media/cam_defs.h> |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 22 | #include "cam_req_mgr_dev.h" |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 23 | #include "cam_req_mgr_util.h" |
| 24 | #include "cam_req_mgr_core.h" |
Jing Zhou | 076a309 | 2017-02-27 02:43:03 -0800 | [diff] [blame] | 25 | #include "cam_subdev.h" |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 26 | #include "cam_mem_mgr.h" |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 27 | #include "cam_debug_util.h" |
Venkat Chinta | 686c9e5 | 2018-01-20 14:33:25 -0800 | [diff] [blame] | 28 | #include <linux/slub_def.h> |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 29 | |
| 30 | #define CAM_REQ_MGR_EVENT_MAX 30 |
| 31 | |
| 32 | static struct cam_req_mgr_device g_dev; |
Venkat Chinta | 686c9e5 | 2018-01-20 14:33:25 -0800 | [diff] [blame] | 33 | struct kmem_cache *g_cam_req_mgr_timer_cachep; |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 34 | |
| 35 | static int cam_media_device_setup(struct device *dev) |
| 36 | { |
| 37 | int rc; |
| 38 | |
| 39 | g_dev.v4l2_dev->mdev = kzalloc(sizeof(*g_dev.v4l2_dev->mdev), |
| 40 | GFP_KERNEL); |
| 41 | if (!g_dev.v4l2_dev->mdev) { |
| 42 | rc = -ENOMEM; |
| 43 | goto mdev_fail; |
| 44 | } |
| 45 | |
| 46 | media_device_init(g_dev.v4l2_dev->mdev); |
| 47 | g_dev.v4l2_dev->mdev->dev = dev; |
| 48 | strlcpy(g_dev.v4l2_dev->mdev->model, CAM_REQ_MGR_VNODE_NAME, |
| 49 | sizeof(g_dev.v4l2_dev->mdev->model)); |
| 50 | |
| 51 | rc = media_device_register(g_dev.v4l2_dev->mdev); |
| 52 | if (rc) |
| 53 | goto media_fail; |
| 54 | |
| 55 | return rc; |
| 56 | |
| 57 | media_fail: |
| 58 | kfree(g_dev.v4l2_dev->mdev); |
| 59 | g_dev.v4l2_dev->mdev = NULL; |
| 60 | mdev_fail: |
| 61 | return rc; |
| 62 | } |
| 63 | |
| 64 | static void cam_media_device_cleanup(void) |
| 65 | { |
| 66 | media_entity_cleanup(&g_dev.video->entity); |
| 67 | media_device_unregister(g_dev.v4l2_dev->mdev); |
| 68 | kfree(g_dev.v4l2_dev->mdev); |
| 69 | g_dev.v4l2_dev->mdev = NULL; |
| 70 | } |
| 71 | |
| 72 | static int cam_v4l2_device_setup(struct device *dev) |
| 73 | { |
| 74 | int rc; |
| 75 | |
| 76 | g_dev.v4l2_dev = kzalloc(sizeof(*g_dev.v4l2_dev), |
| 77 | GFP_KERNEL); |
| 78 | if (!g_dev.v4l2_dev) |
| 79 | return -ENOMEM; |
| 80 | |
| 81 | rc = v4l2_device_register(dev, g_dev.v4l2_dev); |
| 82 | if (rc) |
| 83 | goto reg_fail; |
| 84 | |
| 85 | return rc; |
| 86 | |
| 87 | reg_fail: |
| 88 | kfree(g_dev.v4l2_dev); |
| 89 | g_dev.v4l2_dev = NULL; |
| 90 | return rc; |
| 91 | } |
| 92 | |
| 93 | static void cam_v4l2_device_cleanup(void) |
| 94 | { |
| 95 | v4l2_device_unregister(g_dev.v4l2_dev); |
| 96 | kfree(g_dev.v4l2_dev); |
| 97 | g_dev.v4l2_dev = NULL; |
| 98 | } |
| 99 | |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 100 | static int cam_req_mgr_open(struct file *filep) |
| 101 | { |
| 102 | int rc; |
| 103 | |
| 104 | mutex_lock(&g_dev.cam_lock); |
| 105 | if (g_dev.open_cnt >= 1) { |
| 106 | rc = -EALREADY; |
| 107 | goto end; |
| 108 | } |
| 109 | |
| 110 | rc = v4l2_fh_open(filep); |
| 111 | if (rc) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 112 | CAM_ERR(CAM_CRM, "v4l2_fh_open failed: %d", rc); |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 113 | goto end; |
| 114 | } |
| 115 | |
| 116 | spin_lock_bh(&g_dev.cam_eventq_lock); |
| 117 | g_dev.cam_eventq = filep->private_data; |
| 118 | spin_unlock_bh(&g_dev.cam_eventq_lock); |
| 119 | |
| 120 | g_dev.open_cnt++; |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 121 | rc = cam_mem_mgr_init(); |
| 122 | if (rc) { |
| 123 | g_dev.open_cnt--; |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 124 | CAM_ERR(CAM_CRM, "mem mgr init failed"); |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 125 | goto mem_mgr_init_fail; |
| 126 | } |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 127 | |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 128 | mutex_unlock(&g_dev.cam_lock); |
| 129 | return rc; |
| 130 | |
| 131 | mem_mgr_init_fail: |
| 132 | v4l2_fh_release(filep); |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 133 | end: |
| 134 | mutex_unlock(&g_dev.cam_lock); |
| 135 | return rc; |
| 136 | } |
| 137 | |
| 138 | static unsigned int cam_req_mgr_poll(struct file *f, |
| 139 | struct poll_table_struct *pll_table) |
| 140 | { |
| 141 | int rc = 0; |
| 142 | struct v4l2_fh *eventq = f->private_data; |
| 143 | |
| 144 | if (!eventq) |
| 145 | return -EINVAL; |
| 146 | |
| 147 | poll_wait(f, &eventq->wait, pll_table); |
| 148 | if (v4l2_event_pending(eventq)) |
| 149 | rc = POLLPRI; |
| 150 | |
| 151 | return rc; |
| 152 | } |
| 153 | |
| 154 | static int cam_req_mgr_close(struct file *filep) |
| 155 | { |
| 156 | mutex_lock(&g_dev.cam_lock); |
| 157 | |
| 158 | if (g_dev.open_cnt <= 0) { |
| 159 | mutex_unlock(&g_dev.cam_lock); |
| 160 | return -EINVAL; |
| 161 | } |
| 162 | |
Soundrapandian Jeyaprakash | 8d16e27 | 2017-10-12 11:05:37 -0700 | [diff] [blame] | 163 | cam_req_mgr_handle_core_shutdown(); |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 164 | g_dev.open_cnt--; |
| 165 | v4l2_fh_release(filep); |
| 166 | |
| 167 | spin_lock_bh(&g_dev.cam_eventq_lock); |
| 168 | g_dev.cam_eventq = NULL; |
| 169 | spin_unlock_bh(&g_dev.cam_eventq_lock); |
| 170 | |
| 171 | cam_req_mgr_util_free_hdls(); |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 172 | cam_mem_mgr_deinit(); |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 173 | mutex_unlock(&g_dev.cam_lock); |
| 174 | |
| 175 | return 0; |
| 176 | } |
| 177 | |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 178 | static struct v4l2_file_operations g_cam_fops = { |
| 179 | .owner = THIS_MODULE, |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 180 | .open = cam_req_mgr_open, |
| 181 | .poll = cam_req_mgr_poll, |
| 182 | .release = cam_req_mgr_close, |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 183 | .unlocked_ioctl = video_ioctl2, |
| 184 | #ifdef CONFIG_COMPAT |
| 185 | .compat_ioctl32 = video_ioctl2, |
| 186 | #endif |
| 187 | }; |
| 188 | |
| 189 | static int cam_subscribe_event(struct v4l2_fh *fh, |
| 190 | const struct v4l2_event_subscription *sub) |
| 191 | { |
| 192 | return v4l2_event_subscribe(fh, sub, CAM_REQ_MGR_EVENT_MAX, NULL); |
| 193 | } |
| 194 | |
| 195 | static int cam_unsubscribe_event(struct v4l2_fh *fh, |
| 196 | const struct v4l2_event_subscription *sub) |
| 197 | { |
| 198 | return v4l2_event_unsubscribe(fh, sub); |
| 199 | } |
| 200 | |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 201 | static long cam_private_ioctl(struct file *file, void *fh, |
| 202 | bool valid_prio, unsigned int cmd, void *arg) |
| 203 | { |
| 204 | int rc; |
| 205 | struct cam_control *k_ioctl; |
| 206 | |
| 207 | if ((!arg) || (cmd != VIDIOC_CAM_CONTROL)) |
| 208 | return -EINVAL; |
| 209 | |
| 210 | k_ioctl = (struct cam_control *)arg; |
| 211 | |
| 212 | if (!k_ioctl->handle) |
| 213 | return -EINVAL; |
| 214 | |
| 215 | switch (k_ioctl->op_code) { |
| 216 | case CAM_REQ_MGR_CREATE_SESSION: { |
| 217 | struct cam_req_mgr_session_info ses_info; |
| 218 | |
| 219 | if (k_ioctl->size != sizeof(ses_info)) |
| 220 | return -EINVAL; |
| 221 | |
| 222 | if (copy_from_user(&ses_info, |
| 223 | (void *)k_ioctl->handle, |
| 224 | k_ioctl->size)) { |
| 225 | return -EFAULT; |
| 226 | } |
| 227 | |
| 228 | rc = cam_req_mgr_create_session(&ses_info); |
| 229 | if (!rc) |
| 230 | if (copy_to_user((void *)k_ioctl->handle, |
| 231 | &ses_info, k_ioctl->size)) |
| 232 | rc = -EFAULT; |
| 233 | } |
| 234 | break; |
| 235 | |
| 236 | case CAM_REQ_MGR_DESTROY_SESSION: { |
| 237 | struct cam_req_mgr_session_info ses_info; |
| 238 | |
| 239 | if (k_ioctl->size != sizeof(ses_info)) |
| 240 | return -EINVAL; |
| 241 | |
| 242 | if (copy_from_user(&ses_info, |
| 243 | (void *)k_ioctl->handle, |
| 244 | k_ioctl->size)) { |
| 245 | return -EFAULT; |
| 246 | } |
| 247 | |
| 248 | rc = cam_req_mgr_destroy_session(&ses_info); |
| 249 | } |
| 250 | break; |
| 251 | |
| 252 | case CAM_REQ_MGR_LINK: { |
| 253 | struct cam_req_mgr_link_info link_info; |
| 254 | |
| 255 | if (k_ioctl->size != sizeof(link_info)) |
| 256 | return -EINVAL; |
| 257 | |
| 258 | if (copy_from_user(&link_info, |
| 259 | (void *)k_ioctl->handle, |
| 260 | k_ioctl->size)) { |
| 261 | return -EFAULT; |
| 262 | } |
| 263 | |
| 264 | rc = cam_req_mgr_link(&link_info); |
| 265 | if (!rc) |
| 266 | if (copy_to_user((void *)k_ioctl->handle, |
| 267 | &link_info, k_ioctl->size)) |
| 268 | rc = -EFAULT; |
| 269 | } |
| 270 | break; |
| 271 | |
| 272 | case CAM_REQ_MGR_UNLINK: { |
| 273 | struct cam_req_mgr_unlink_info unlink_info; |
| 274 | |
| 275 | if (k_ioctl->size != sizeof(unlink_info)) |
| 276 | return -EINVAL; |
| 277 | |
| 278 | if (copy_from_user(&unlink_info, |
| 279 | (void *)k_ioctl->handle, |
| 280 | k_ioctl->size)) { |
| 281 | return -EFAULT; |
| 282 | } |
| 283 | |
| 284 | rc = cam_req_mgr_unlink(&unlink_info); |
| 285 | } |
| 286 | break; |
| 287 | |
| 288 | case CAM_REQ_MGR_SCHED_REQ: { |
| 289 | struct cam_req_mgr_sched_request sched_req; |
| 290 | |
| 291 | if (k_ioctl->size != sizeof(sched_req)) |
| 292 | return -EINVAL; |
| 293 | |
| 294 | if (copy_from_user(&sched_req, |
| 295 | (void *)k_ioctl->handle, |
| 296 | k_ioctl->size)) { |
| 297 | return -EFAULT; |
| 298 | } |
| 299 | |
| 300 | rc = cam_req_mgr_schedule_request(&sched_req); |
| 301 | } |
| 302 | break; |
| 303 | |
| 304 | case CAM_REQ_MGR_FLUSH_REQ: { |
| 305 | struct cam_req_mgr_flush_info flush_info; |
| 306 | |
| 307 | if (k_ioctl->size != sizeof(flush_info)) |
| 308 | return -EINVAL; |
| 309 | |
| 310 | if (copy_from_user(&flush_info, |
| 311 | (void *)k_ioctl->handle, |
| 312 | k_ioctl->size)) { |
| 313 | return -EFAULT; |
| 314 | } |
| 315 | |
| 316 | rc = cam_req_mgr_flush_requests(&flush_info); |
| 317 | } |
| 318 | break; |
| 319 | |
| 320 | case CAM_REQ_MGR_SYNC_MODE: { |
Pavan Kumar Chilamkurthi | 1fd0344 | 2017-11-07 17:07:21 -0800 | [diff] [blame] | 321 | struct cam_req_mgr_sync_mode sync_info; |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 322 | |
Pavan Kumar Chilamkurthi | 1fd0344 | 2017-11-07 17:07:21 -0800 | [diff] [blame] | 323 | if (k_ioctl->size != sizeof(sync_info)) |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 324 | return -EINVAL; |
| 325 | |
Pavan Kumar Chilamkurthi | 1fd0344 | 2017-11-07 17:07:21 -0800 | [diff] [blame] | 326 | if (copy_from_user(&sync_info, |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 327 | (void *)k_ioctl->handle, |
| 328 | k_ioctl->size)) { |
| 329 | return -EFAULT; |
| 330 | } |
| 331 | |
Pavan Kumar Chilamkurthi | 1fd0344 | 2017-11-07 17:07:21 -0800 | [diff] [blame] | 332 | rc = cam_req_mgr_sync_config(&sync_info); |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 333 | } |
| 334 | break; |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 335 | case CAM_REQ_MGR_ALLOC_BUF: { |
| 336 | struct cam_mem_mgr_alloc_cmd cmd; |
| 337 | |
| 338 | if (k_ioctl->size != sizeof(cmd)) |
| 339 | return -EINVAL; |
| 340 | |
| 341 | if (copy_from_user(&cmd, |
| 342 | (void *)k_ioctl->handle, |
| 343 | k_ioctl->size)) { |
| 344 | rc = -EFAULT; |
| 345 | break; |
| 346 | } |
| 347 | |
| 348 | rc = cam_mem_mgr_alloc_and_map(&cmd); |
| 349 | if (!rc) |
| 350 | if (copy_to_user((void *)k_ioctl->handle, |
| 351 | &cmd, k_ioctl->size)) { |
| 352 | rc = -EFAULT; |
| 353 | break; |
| 354 | } |
| 355 | } |
| 356 | break; |
| 357 | case CAM_REQ_MGR_MAP_BUF: { |
| 358 | struct cam_mem_mgr_map_cmd cmd; |
| 359 | |
| 360 | if (k_ioctl->size != sizeof(cmd)) |
| 361 | return -EINVAL; |
| 362 | |
| 363 | if (copy_from_user(&cmd, |
| 364 | (void *)k_ioctl->handle, |
| 365 | k_ioctl->size)) { |
| 366 | rc = -EFAULT; |
| 367 | break; |
| 368 | } |
| 369 | |
| 370 | rc = cam_mem_mgr_map(&cmd); |
| 371 | if (!rc) |
| 372 | if (copy_to_user((void *)k_ioctl->handle, |
| 373 | &cmd, k_ioctl->size)) { |
| 374 | rc = -EFAULT; |
| 375 | break; |
| 376 | } |
| 377 | } |
| 378 | break; |
| 379 | case CAM_REQ_MGR_RELEASE_BUF: { |
| 380 | struct cam_mem_mgr_release_cmd cmd; |
| 381 | |
| 382 | if (k_ioctl->size != sizeof(cmd)) |
| 383 | return -EINVAL; |
| 384 | |
| 385 | if (copy_from_user(&cmd, |
| 386 | (void *)k_ioctl->handle, |
| 387 | k_ioctl->size)) { |
| 388 | rc = -EFAULT; |
| 389 | break; |
| 390 | } |
| 391 | |
| 392 | rc = cam_mem_mgr_release(&cmd); |
| 393 | } |
| 394 | break; |
| 395 | case CAM_REQ_MGR_CACHE_OPS: { |
| 396 | struct cam_mem_cache_ops_cmd cmd; |
| 397 | |
| 398 | if (k_ioctl->size != sizeof(cmd)) |
| 399 | return -EINVAL; |
| 400 | |
| 401 | if (copy_from_user(&cmd, |
| 402 | (void *)k_ioctl->handle, |
| 403 | k_ioctl->size)) { |
| 404 | rc = -EFAULT; |
| 405 | break; |
| 406 | } |
| 407 | |
| 408 | rc = cam_mem_mgr_cache_ops(&cmd); |
| 409 | if (rc) |
| 410 | rc = -EINVAL; |
| 411 | } |
| 412 | break; |
Jing Zhou | 0f64533 | 2017-11-17 12:16:40 -0800 | [diff] [blame] | 413 | case CAM_REQ_MGR_LINK_CONTROL: { |
| 414 | struct cam_req_mgr_link_control cmd; |
| 415 | |
| 416 | if (k_ioctl->size != sizeof(cmd)) |
| 417 | return -EINVAL; |
| 418 | |
| 419 | if (copy_from_user(&cmd, |
| 420 | (void __user *)k_ioctl->handle, |
| 421 | k_ioctl->size)) { |
| 422 | rc = -EFAULT; |
| 423 | break; |
| 424 | } |
| 425 | |
| 426 | rc = cam_req_mgr_link_control(&cmd); |
| 427 | if (rc) |
| 428 | rc = -EINVAL; |
| 429 | } |
| 430 | break; |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 431 | default: |
| 432 | return -ENOIOCTLCMD; |
| 433 | } |
| 434 | |
| 435 | return rc; |
| 436 | } |
| 437 | |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 438 | static const struct v4l2_ioctl_ops g_cam_ioctl_ops = { |
| 439 | .vidioc_subscribe_event = cam_subscribe_event, |
| 440 | .vidioc_unsubscribe_event = cam_unsubscribe_event, |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 441 | .vidioc_default = cam_private_ioctl, |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 442 | }; |
| 443 | |
| 444 | static int cam_video_device_setup(void) |
| 445 | { |
| 446 | int rc; |
| 447 | |
| 448 | g_dev.video = video_device_alloc(); |
| 449 | if (!g_dev.video) { |
| 450 | rc = -ENOMEM; |
| 451 | goto video_fail; |
| 452 | } |
| 453 | |
| 454 | g_dev.video->v4l2_dev = g_dev.v4l2_dev; |
| 455 | |
| 456 | strlcpy(g_dev.video->name, "cam-req-mgr", |
| 457 | sizeof(g_dev.video->name)); |
| 458 | g_dev.video->release = video_device_release; |
| 459 | g_dev.video->fops = &g_cam_fops; |
| 460 | g_dev.video->ioctl_ops = &g_cam_ioctl_ops; |
| 461 | g_dev.video->minor = -1; |
| 462 | g_dev.video->vfl_type = VFL_TYPE_GRABBER; |
| 463 | rc = video_register_device(g_dev.video, VFL_TYPE_GRABBER, -1); |
| 464 | if (rc) |
| 465 | goto v4l2_fail; |
| 466 | |
| 467 | rc = media_entity_pads_init(&g_dev.video->entity, 0, NULL); |
| 468 | if (rc) |
| 469 | goto entity_fail; |
| 470 | |
| 471 | g_dev.video->entity.function = CAM_VNODE_DEVICE_TYPE; |
| 472 | g_dev.video->entity.name = video_device_node_name(g_dev.video); |
| 473 | |
| 474 | return rc; |
| 475 | |
| 476 | entity_fail: |
| 477 | video_unregister_device(g_dev.video); |
| 478 | v4l2_fail: |
| 479 | video_device_release(g_dev.video); |
| 480 | g_dev.video = NULL; |
| 481 | video_fail: |
| 482 | return rc; |
| 483 | } |
| 484 | |
Harsh Shah | 67fa231 | 2017-10-30 04:03:07 -0700 | [diff] [blame] | 485 | int cam_req_mgr_notify_message(struct cam_req_mgr_message *msg, |
Seemanta Dutta | 85afac7 | 2017-05-05 11:45:57 -0700 | [diff] [blame] | 486 | uint32_t id, |
| 487 | uint32_t type) |
| 488 | { |
| 489 | struct v4l2_event event; |
| 490 | struct cam_req_mgr_message *ev_header; |
| 491 | |
| 492 | if (!msg) |
| 493 | return -EINVAL; |
| 494 | |
| 495 | event.id = id; |
| 496 | event.type = type; |
| 497 | ev_header = CAM_REQ_MGR_GET_PAYLOAD_PTR(event, |
| 498 | struct cam_req_mgr_message); |
| 499 | memcpy(ev_header, msg, sizeof(struct cam_req_mgr_message)); |
| 500 | v4l2_event_queue(g_dev.video, &event); |
| 501 | |
| 502 | return 0; |
| 503 | } |
Harsh Shah | 67fa231 | 2017-10-30 04:03:07 -0700 | [diff] [blame] | 504 | EXPORT_SYMBOL(cam_req_mgr_notify_message); |
Seemanta Dutta | 85afac7 | 2017-05-05 11:45:57 -0700 | [diff] [blame] | 505 | |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 506 | void cam_video_device_cleanup(void) |
| 507 | { |
| 508 | video_unregister_device(g_dev.video); |
| 509 | video_device_release(g_dev.video); |
| 510 | g_dev.video = NULL; |
| 511 | } |
| 512 | |
Viswanadha Raju Thotakura | 08b5081 | 2017-08-25 14:52:32 -0700 | [diff] [blame] | 513 | void cam_register_subdev_fops(struct v4l2_file_operations *fops) |
| 514 | { |
| 515 | *fops = v4l2_subdev_fops; |
| 516 | } |
| 517 | EXPORT_SYMBOL(cam_register_subdev_fops); |
| 518 | |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 519 | int cam_register_subdev(struct cam_subdev *csd) |
| 520 | { |
| 521 | struct v4l2_subdev *sd; |
| 522 | int rc; |
| 523 | |
| 524 | if (g_dev.state != true) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 525 | CAM_ERR(CAM_CRM, "camera root device not ready yet"); |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 526 | return -ENODEV; |
| 527 | } |
| 528 | |
| 529 | if (!csd || !csd->name) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 530 | CAM_ERR(CAM_CRM, "invalid arguments"); |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 531 | return -EINVAL; |
| 532 | } |
| 533 | |
| 534 | mutex_lock(&g_dev.dev_lock); |
| 535 | if ((g_dev.subdev_nodes_created) && |
| 536 | (csd->sd_flags & V4L2_SUBDEV_FL_HAS_DEVNODE)) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 537 | CAM_ERR(CAM_CRM, |
| 538 | "dynamic node is not allowed, name: %s, type :%d", |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 539 | csd->name, csd->ent_function); |
| 540 | rc = -EINVAL; |
| 541 | goto reg_fail; |
| 542 | } |
| 543 | |
| 544 | sd = &csd->sd; |
| 545 | v4l2_subdev_init(sd, csd->ops); |
| 546 | sd->internal_ops = csd->internal_ops; |
| 547 | snprintf(sd->name, ARRAY_SIZE(sd->name), csd->name); |
| 548 | v4l2_set_subdevdata(sd, csd->token); |
| 549 | |
| 550 | sd->flags = csd->sd_flags; |
| 551 | sd->entity.num_pads = 0; |
| 552 | sd->entity.pads = NULL; |
| 553 | sd->entity.function = csd->ent_function; |
| 554 | |
| 555 | rc = v4l2_device_register_subdev(g_dev.v4l2_dev, sd); |
| 556 | if (rc) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 557 | CAM_ERR(CAM_CRM, "register subdev failed"); |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 558 | goto reg_fail; |
| 559 | } |
| 560 | g_dev.count++; |
| 561 | |
| 562 | reg_fail: |
| 563 | mutex_unlock(&g_dev.dev_lock); |
| 564 | return rc; |
| 565 | } |
| 566 | EXPORT_SYMBOL(cam_register_subdev); |
| 567 | |
| 568 | int cam_unregister_subdev(struct cam_subdev *csd) |
| 569 | { |
| 570 | if (g_dev.state != true) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 571 | CAM_ERR(CAM_CRM, "camera root device not ready yet"); |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 572 | return -ENODEV; |
| 573 | } |
| 574 | |
| 575 | mutex_lock(&g_dev.dev_lock); |
| 576 | v4l2_device_unregister_subdev(&csd->sd); |
| 577 | g_dev.count--; |
| 578 | mutex_unlock(&g_dev.dev_lock); |
| 579 | |
| 580 | return 0; |
| 581 | } |
| 582 | EXPORT_SYMBOL(cam_unregister_subdev); |
| 583 | |
| 584 | static int cam_req_mgr_remove(struct platform_device *pdev) |
| 585 | { |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 586 | cam_req_mgr_core_device_deinit(); |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 587 | cam_mem_mgr_deinit(); |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 588 | cam_req_mgr_util_deinit(); |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 589 | cam_media_device_cleanup(); |
| 590 | cam_video_device_cleanup(); |
| 591 | cam_v4l2_device_cleanup(); |
| 592 | mutex_destroy(&g_dev.dev_lock); |
| 593 | g_dev.state = false; |
| 594 | |
| 595 | return 0; |
| 596 | } |
| 597 | |
| 598 | static int cam_req_mgr_probe(struct platform_device *pdev) |
| 599 | { |
| 600 | int rc; |
| 601 | |
| 602 | rc = cam_v4l2_device_setup(&pdev->dev); |
| 603 | if (rc) |
| 604 | return rc; |
| 605 | |
| 606 | rc = cam_media_device_setup(&pdev->dev); |
| 607 | if (rc) |
| 608 | goto media_setup_fail; |
| 609 | |
| 610 | rc = cam_video_device_setup(); |
| 611 | if (rc) |
| 612 | goto video_setup_fail; |
| 613 | |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 614 | g_dev.open_cnt = 0; |
| 615 | mutex_init(&g_dev.cam_lock); |
| 616 | spin_lock_init(&g_dev.cam_eventq_lock); |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 617 | g_dev.subdev_nodes_created = false; |
| 618 | mutex_init(&g_dev.dev_lock); |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 619 | |
| 620 | rc = cam_req_mgr_util_init(); |
| 621 | if (rc) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 622 | CAM_ERR(CAM_CRM, "cam req mgr util init is failed"); |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 623 | goto req_mgr_util_fail; |
| 624 | } |
| 625 | |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 626 | rc = cam_mem_mgr_init(); |
| 627 | if (rc) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 628 | CAM_ERR(CAM_CRM, "mem mgr init failed"); |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 629 | goto mem_mgr_init_fail; |
| 630 | } |
| 631 | |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 632 | rc = cam_req_mgr_core_device_init(); |
| 633 | if (rc) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 634 | CAM_ERR(CAM_CRM, "core device setup failed"); |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 635 | goto req_mgr_core_fail; |
| 636 | } |
| 637 | |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 638 | g_dev.state = true; |
| 639 | |
Venkat Chinta | 686c9e5 | 2018-01-20 14:33:25 -0800 | [diff] [blame] | 640 | if (g_cam_req_mgr_timer_cachep == NULL) { |
| 641 | g_cam_req_mgr_timer_cachep = kmem_cache_create("crm_timer", |
| 642 | sizeof(struct cam_req_mgr_timer), 64, |
| 643 | SLAB_CONSISTENCY_CHECKS | SLAB_RED_ZONE | |
| 644 | SLAB_POISON | SLAB_STORE_USER, NULL); |
| 645 | if (!g_cam_req_mgr_timer_cachep) |
| 646 | CAM_ERR(CAM_CRM, |
| 647 | "Failed to create kmem_cache for crm_timer"); |
| 648 | else |
| 649 | CAM_DBG(CAM_CRM, "Name : %s", |
| 650 | g_cam_req_mgr_timer_cachep->name); |
| 651 | } |
| 652 | |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 653 | return rc; |
| 654 | |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 655 | req_mgr_core_fail: |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 656 | cam_mem_mgr_deinit(); |
| 657 | mem_mgr_init_fail: |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 658 | cam_req_mgr_util_deinit(); |
| 659 | req_mgr_util_fail: |
Seemanta Dutta | 1c827da | 2017-04-05 17:34:05 -0700 | [diff] [blame] | 660 | mutex_destroy(&g_dev.dev_lock); |
| 661 | mutex_destroy(&g_dev.cam_lock); |
Sagar Gore | 8d91a62 | 2017-02-23 14:57:18 -0800 | [diff] [blame] | 662 | cam_video_device_cleanup(); |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 663 | video_setup_fail: |
| 664 | cam_media_device_cleanup(); |
| 665 | media_setup_fail: |
| 666 | cam_v4l2_device_cleanup(); |
| 667 | return rc; |
| 668 | } |
| 669 | |
| 670 | static const struct of_device_id cam_req_mgr_dt_match[] = { |
| 671 | {.compatible = "qcom,cam-req-mgr"}, |
| 672 | {} |
| 673 | }; |
| 674 | MODULE_DEVICE_TABLE(of, cam_dt_match); |
| 675 | |
| 676 | static struct platform_driver cam_req_mgr_driver = { |
| 677 | .probe = cam_req_mgr_probe, |
| 678 | .remove = cam_req_mgr_remove, |
| 679 | .driver = { |
| 680 | .name = "cam_req_mgr", |
| 681 | .owner = THIS_MODULE, |
| 682 | .of_match_table = cam_req_mgr_dt_match, |
| 683 | }, |
| 684 | }; |
| 685 | |
| 686 | int cam_dev_mgr_create_subdev_nodes(void) |
| 687 | { |
| 688 | int rc; |
| 689 | struct v4l2_subdev *sd; |
| 690 | |
| 691 | if (!g_dev.v4l2_dev) |
| 692 | return -EINVAL; |
| 693 | |
| 694 | if (g_dev.state != true) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 695 | CAM_ERR(CAM_CRM, "camera root device not ready yet"); |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 696 | return -ENODEV; |
| 697 | } |
| 698 | |
| 699 | mutex_lock(&g_dev.dev_lock); |
| 700 | if (g_dev.subdev_nodes_created) { |
| 701 | rc = -EEXIST; |
| 702 | goto create_fail; |
| 703 | } |
| 704 | |
| 705 | rc = v4l2_device_register_subdev_nodes(g_dev.v4l2_dev); |
| 706 | if (rc) { |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 707 | CAM_ERR(CAM_CRM, "failed to register the sub devices"); |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 708 | goto create_fail; |
| 709 | } |
| 710 | |
| 711 | list_for_each_entry(sd, &g_dev.v4l2_dev->subdevs, list) { |
| 712 | if (!(sd->flags & V4L2_SUBDEV_FL_HAS_DEVNODE)) |
| 713 | continue; |
| 714 | sd->entity.name = video_device_node_name(sd->devnode); |
Jigarkumar Zala | 36ad717 | 2017-07-18 19:52:14 -0700 | [diff] [blame] | 715 | CAM_DBG(CAM_CRM, "created node :%s", sd->entity.name); |
Lakshmi Narayana Kalavala | bda14e2 | 2017-02-06 19:07:52 -0800 | [diff] [blame] | 716 | } |
| 717 | |
| 718 | g_dev.subdev_nodes_created = true; |
| 719 | |
| 720 | create_fail: |
| 721 | mutex_unlock(&g_dev.dev_lock); |
| 722 | return rc; |
| 723 | } |
| 724 | |
| 725 | static int __init cam_req_mgr_init(void) |
| 726 | { |
| 727 | return platform_driver_register(&cam_req_mgr_driver); |
| 728 | } |
| 729 | |
| 730 | static int __init cam_req_mgr_late_init(void) |
| 731 | { |
| 732 | return cam_dev_mgr_create_subdev_nodes(); |
| 733 | } |
| 734 | |
| 735 | static void __exit cam_req_mgr_exit(void) |
| 736 | { |
| 737 | platform_driver_unregister(&cam_req_mgr_driver); |
| 738 | } |
| 739 | |
| 740 | module_init(cam_req_mgr_init); |
| 741 | late_initcall(cam_req_mgr_late_init); |
| 742 | module_exit(cam_req_mgr_exit); |
| 743 | MODULE_DESCRIPTION("Camera Request Manager"); |
| 744 | MODULE_LICENSE("GPL v2"); |