Pratap Nirujogi | 6e75991 | 2018-01-17 17:51:17 +0530 | [diff] [blame^] | 1 | /* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved. |
| 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 | |
| 13 | #include <linux/vmalloc.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/regulator/consumer.h> |
| 18 | #include <linux/spinlock.h> |
| 19 | #include <linux/interrupt.h> |
| 20 | #include <linux/ion.h> |
| 21 | #include <linux/msm_ion.h> |
| 22 | #include <media/v4l2-ioctl.h> |
| 23 | #include <media/v4l2-event.h> |
| 24 | #include <media/videobuf2-v4l2.h> |
| 25 | #include <linux/clk/msm-clk.h> |
| 26 | |
| 27 | #include "msm_fd_dev.h" |
| 28 | #include "msm_fd_hw.h" |
| 29 | #include "msm_fd_regs.h" |
| 30 | |
| 31 | #define MSM_FD_DRV_NAME "msm_fd" |
| 32 | |
| 33 | #define MSM_FD_WORD_SIZE_BYTES 4 |
| 34 | |
| 35 | /* Face detection thresholds definitions */ |
| 36 | #define MSM_FD_DEF_THRESHOLD 5 |
| 37 | #define MSM_FD_MAX_THRESHOLD_VALUE 9 |
| 38 | |
| 39 | /* Face angle lookup table */ |
| 40 | #define MSM_FD_DEF_ANGLE_IDX 2 |
| 41 | static int msm_fd_angle[] = {45, 135, 359}; |
| 42 | |
| 43 | /* Face direction lookup table */ |
| 44 | #define MSM_FD_DEF_DIR_IDX 0 |
| 45 | static int msm_fd_dir[] = {0, 90, 270, 180}; |
| 46 | |
| 47 | /* Minimum face size lookup table */ |
| 48 | #define MSM_FD_DEF_MIN_SIZE_IDX 0 |
| 49 | static int msm_fd_min_size[] = {20, 25, 32, 40}; |
| 50 | |
| 51 | /* Face detection size lookup table */ |
| 52 | static struct msm_fd_size fd_size[] = { |
| 53 | { |
| 54 | .width = 320, |
| 55 | .height = 240, |
| 56 | .reg_val = MSM_FD_IMAGE_SIZE_QVGA, |
| 57 | .work_size = (13120 * MSM_FD_WORD_SIZE_BYTES), |
| 58 | }, |
| 59 | { |
| 60 | .width = 427, |
| 61 | .height = 240, |
| 62 | .reg_val = MSM_FD_IMAGE_SIZE_WQVGA, |
| 63 | .work_size = (17744 * MSM_FD_WORD_SIZE_BYTES), |
| 64 | }, |
| 65 | { |
| 66 | .width = 640, |
| 67 | .height = 480, |
| 68 | .reg_val = MSM_FD_IMAGE_SIZE_VGA, |
| 69 | .work_size = (52624 * MSM_FD_WORD_SIZE_BYTES), |
| 70 | }, |
| 71 | { |
| 72 | .width = 854, |
| 73 | .height = 480, |
| 74 | .reg_val = MSM_FD_IMAGE_SIZE_WVGA, |
| 75 | .work_size = (70560 * MSM_FD_WORD_SIZE_BYTES), |
| 76 | }, |
| 77 | }; |
| 78 | |
| 79 | /* |
| 80 | * msm_fd_ctx_from_fh - Get fd context from v4l2 fh. |
| 81 | * @fh: Pointer to v4l2 fh. |
| 82 | */ |
| 83 | static inline struct fd_ctx *msm_fd_ctx_from_fh(struct v4l2_fh *fh) |
| 84 | { |
| 85 | return container_of(fh, struct fd_ctx, fh); |
| 86 | } |
| 87 | |
| 88 | /* |
| 89 | * msm_fd_get_format_index - Get format index from v4l2 format. |
| 90 | * @f: Pointer to v4l2 format struct. |
| 91 | */ |
| 92 | static int msm_fd_get_format_index(struct v4l2_format *f) |
| 93 | { |
| 94 | int index; |
| 95 | |
| 96 | for (index = 0; index < ARRAY_SIZE(fd_size); index++) { |
| 97 | if (f->fmt.pix.width <= fd_size[index].width && |
| 98 | f->fmt.pix.height <= fd_size[index].height) |
| 99 | return index; |
| 100 | } |
| 101 | return index - 1; |
| 102 | } |
| 103 | |
| 104 | /* |
| 105 | * msm_fd_get_idx_from_value - Get array index from value. |
| 106 | * @value: Value for which index is needed. |
| 107 | * @array: Array in which index is searched for. |
| 108 | * @array_size: Array size. |
| 109 | */ |
| 110 | static int msm_fd_get_idx_from_value(int value, int *array, int array_size) |
| 111 | { |
| 112 | int index; |
| 113 | int i; |
| 114 | |
| 115 | index = 0; |
| 116 | for (i = 1; i < array_size; i++) { |
| 117 | if (value == array[i]) { |
| 118 | index = i; |
| 119 | break; |
| 120 | } |
| 121 | if (abs(value - array[i]) < abs(value - array[index])) |
| 122 | index = i; |
| 123 | } |
| 124 | return index; |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * msm_fd_fill_format_from_index - Fill v4l2 format struct from size index. |
| 129 | * @f: Pointer of v4l2 struct which will be filled. |
| 130 | * @index: Size index (Format will be filled based on this index). |
| 131 | */ |
| 132 | static int msm_fd_fill_format_from_index(struct v4l2_format *f, int index) |
| 133 | { |
| 134 | f->fmt.pix.width = fd_size[index].width; |
| 135 | f->fmt.pix.height = fd_size[index].height; |
| 136 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_GREY; |
| 137 | if (f->fmt.pix.bytesperline < f->fmt.pix.width) |
| 138 | f->fmt.pix.bytesperline = f->fmt.pix.width; |
| 139 | |
| 140 | f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.bytesperline, 16); |
| 141 | f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; |
| 142 | f->fmt.pix.field = V4L2_FIELD_NONE; |
| 143 | |
| 144 | return 0; |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | * msm_fd_fill_format_from_ctx - Fill v4l2 format struct from fd context. |
| 149 | * @f: Pointer of v4l2 struct which will be filled. |
| 150 | * @c: Pointer to fd context. |
| 151 | */ |
| 152 | static int msm_fd_fill_format_from_ctx(struct v4l2_format *f, struct fd_ctx *c) |
| 153 | { |
| 154 | if (c->format.size == NULL) |
| 155 | return -EINVAL; |
| 156 | |
| 157 | f->fmt.pix.width = c->format.size->width; |
| 158 | f->fmt.pix.height = c->format.size->height; |
| 159 | f->fmt.pix.pixelformat = c->format.pixelformat; |
| 160 | f->fmt.pix.bytesperline = c->format.bytesperline; |
| 161 | f->fmt.pix.sizeimage = c->format.sizeimage; |
| 162 | f->fmt.pix.field = V4L2_FIELD_NONE; |
| 163 | |
| 164 | return 0; |
| 165 | } |
| 166 | |
| 167 | /* |
| 168 | * msm_fd_queue_setup - vb2_ops queue_setup callback. |
| 169 | * @q: Pointer to vb2 queue struct. |
| 170 | * @fmt: Pointer to v4l2 format struct (NULL is valid argument). |
| 171 | * @num_buffers: Pointer of number of buffers requested. |
| 172 | * @num_planes: Pointer to number of planes requested. |
| 173 | * @sizes: Array containing sizes of planes. |
| 174 | * @alloc_ctxs: Array of allocated contexts for each plane. |
| 175 | */ |
| 176 | static int msm_fd_queue_setup(struct vb2_queue *q, |
| 177 | // const void *parg, |
| 178 | unsigned int *num_buffers, unsigned int *num_planes, |
| 179 | unsigned int sizes[], struct device *alloc_ctxs[]) |
| 180 | { |
| 181 | struct fd_ctx *ctx = vb2_get_drv_priv(q); |
| 182 | //const struct v4l2_format *fmt = parg; |
| 183 | const struct v4l2_format *fmt = NULL; |
| 184 | |
| 185 | *num_planes = 1; |
| 186 | |
| 187 | if (fmt == NULL) |
| 188 | sizes[0] = ctx->format.sizeimage; |
| 189 | else |
| 190 | sizes[0] = fmt->fmt.pix.sizeimage; |
| 191 | |
| 192 | alloc_ctxs[0] = (struct device *)&ctx->mem_pool; |
| 193 | |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | /* |
| 198 | * msm_fd_buf_init - vb2_ops buf_init callback. |
| 199 | * @vb: Pointer to vb2 buffer struct. |
| 200 | */ |
| 201 | static int msm_fd_buf_init(struct vb2_buffer *vb) |
| 202 | { |
| 203 | struct msm_fd_buffer *fd_buffer = |
| 204 | (struct msm_fd_buffer *)vb; |
| 205 | |
| 206 | INIT_LIST_HEAD(&fd_buffer->list); |
| 207 | atomic_set(&fd_buffer->active, 0); |
| 208 | |
| 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | /* |
| 213 | * msm_fd_buf_queue - vb2_ops buf_queue callback. |
| 214 | * @vb: Pointer to vb2 buffer struct. |
| 215 | */ |
| 216 | static void msm_fd_buf_queue(struct vb2_buffer *vb) |
| 217 | { |
| 218 | struct fd_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
| 219 | struct msm_fd_buffer *fd_buffer = |
| 220 | (struct msm_fd_buffer *)vb; |
| 221 | |
| 222 | fd_buffer->format = ctx->format; |
| 223 | fd_buffer->settings = ctx->settings; |
| 224 | fd_buffer->work_addr = ctx->work_buf.addr; |
| 225 | msm_fd_hw_add_buffer(ctx->fd_device, fd_buffer); |
| 226 | |
| 227 | if (vb->vb2_queue->streaming) |
| 228 | msm_fd_hw_schedule_and_start(ctx->fd_device); |
| 229 | |
| 230 | } |
| 231 | |
| 232 | /* |
| 233 | * msm_fd_start_streaming - vb2_ops start_streaming callback. |
| 234 | * @q: Pointer to vb2 queue struct. |
| 235 | * @count: Number of buffer queued before stream on call. |
| 236 | */ |
| 237 | static int msm_fd_start_streaming(struct vb2_queue *q, unsigned int count) |
| 238 | { |
| 239 | struct fd_ctx *ctx = vb2_get_drv_priv(q); |
| 240 | int ret; |
| 241 | |
| 242 | if (ctx->work_buf.fd == -1) { |
| 243 | dev_err(ctx->fd_device->dev, "Missing working buffer\n"); |
| 244 | return -EINVAL; |
| 245 | } |
| 246 | |
| 247 | ret = msm_fd_hw_get(ctx->fd_device, ctx->settings.speed); |
| 248 | if (ret < 0) { |
| 249 | dev_err(ctx->fd_device->dev, "Can not acquire fd hw\n"); |
| 250 | goto out; |
| 251 | } |
| 252 | |
| 253 | ret = msm_fd_hw_schedule_and_start(ctx->fd_device); |
| 254 | if (ret < 0) |
| 255 | dev_err(ctx->fd_device->dev, "Can not start fd hw\n"); |
| 256 | |
| 257 | out: |
| 258 | return ret; |
| 259 | } |
| 260 | |
| 261 | /* |
| 262 | * msm_fd_stop_streaming - vb2_ops stop_streaming callback. |
| 263 | * @q: Pointer to vb2 queue struct. |
| 264 | */ |
| 265 | static void msm_fd_stop_streaming(struct vb2_queue *q) |
| 266 | { |
| 267 | struct fd_ctx *ctx = vb2_get_drv_priv(q); |
| 268 | |
| 269 | mutex_lock(&ctx->fd_device->recovery_lock); |
| 270 | msm_fd_hw_remove_buffers_from_queue(ctx->fd_device, q); |
| 271 | msm_fd_hw_put(ctx->fd_device); |
| 272 | mutex_unlock(&ctx->fd_device->recovery_lock); |
| 273 | } |
| 274 | |
| 275 | /* Videobuf2 queue callbacks. */ |
| 276 | static struct vb2_ops msm_fd_vb2_q_ops = { |
| 277 | .queue_setup = msm_fd_queue_setup, |
| 278 | .buf_init = msm_fd_buf_init, |
| 279 | .buf_queue = msm_fd_buf_queue, |
| 280 | .start_streaming = msm_fd_start_streaming, |
| 281 | .stop_streaming = msm_fd_stop_streaming, |
| 282 | }; |
| 283 | |
| 284 | /* |
| 285 | * msm_fd_get_userptr - Map and get buffer handler for user pointer buffer. |
| 286 | * @alloc_ctx: Contexts allocated in buf_setup. |
| 287 | * @vaddr: Virtual addr passed from userpsace (in our case ion fd) |
| 288 | * @size: Size of the buffer |
| 289 | * @write: True if buffer will be used for writing the data. |
| 290 | */ |
| 291 | static void *msm_fd_get_userptr(struct device *alloc_ctx, |
| 292 | unsigned long vaddr, unsigned long size, |
| 293 | enum dma_data_direction dma_dir) |
| 294 | { |
| 295 | struct msm_fd_mem_pool *pool = (void *)alloc_ctx; |
| 296 | struct msm_fd_buf_handle *buf; |
| 297 | int ret; |
| 298 | |
| 299 | buf = kzalloc(sizeof(*buf), GFP_KERNEL); |
| 300 | if (!buf) |
| 301 | return ERR_PTR(-ENOMEM); |
| 302 | |
| 303 | ret = msm_fd_hw_map_buffer(pool, vaddr, buf); |
| 304 | if (ret < 0 || buf->size < size) |
| 305 | goto error; |
| 306 | |
| 307 | return buf; |
| 308 | error: |
| 309 | kzfree(buf); |
| 310 | return ERR_PTR(-ENOMEM); |
| 311 | } |
| 312 | |
| 313 | /* |
| 314 | * msm_fd_put_userptr - Unmap and free buffer handler. |
| 315 | * @buf_priv: Buffer handler allocated get_userptr callback. |
| 316 | */ |
| 317 | static void msm_fd_put_userptr(void *buf_priv) |
| 318 | { |
| 319 | if (IS_ERR_OR_NULL(buf_priv)) |
| 320 | return; |
| 321 | |
| 322 | msm_fd_hw_unmap_buffer(buf_priv); |
| 323 | |
| 324 | kzfree(buf_priv); |
| 325 | } |
| 326 | |
| 327 | /* Videobuf2 memory callbacks. */ |
| 328 | static struct vb2_mem_ops msm_fd_vb2_mem_ops = { |
| 329 | .get_userptr = msm_fd_get_userptr, |
| 330 | .put_userptr = msm_fd_put_userptr, |
| 331 | }; |
| 332 | |
| 333 | /* |
| 334 | * msm_fd_vbif_error_handler - FD VBIF Error handler |
| 335 | * @handle: FD Device handle |
| 336 | * @error: CPP-VBIF Error code |
| 337 | */ |
| 338 | static int msm_fd_vbif_error_handler(void *handle, uint32_t error) |
| 339 | { |
| 340 | struct fd_ctx *ctx; |
| 341 | struct msm_fd_device *fd; |
| 342 | struct msm_fd_buffer *active_buf; |
| 343 | int ret; |
| 344 | |
| 345 | if (handle == NULL) |
| 346 | return 0; |
| 347 | |
| 348 | ctx = (struct fd_ctx *)handle; |
| 349 | fd = (struct msm_fd_device *)ctx->fd_device; |
| 350 | |
| 351 | if (error == CPP_VBIF_ERROR_HANG) { |
| 352 | mutex_lock(&fd->recovery_lock); |
| 353 | dev_err(fd->dev, "Handling FD VBIF Hang\n"); |
| 354 | if (fd->state != MSM_FD_DEVICE_RUNNING) { |
| 355 | dev_err(fd->dev, "FD is not FD_DEVICE_RUNNING, %d\n", |
| 356 | fd->state); |
| 357 | mutex_unlock(&fd->recovery_lock); |
| 358 | return 0; |
| 359 | } |
| 360 | fd->recovery_mode = 1; |
| 361 | |
| 362 | /* Halt and reset */ |
| 363 | msm_fd_hw_put(fd); |
| 364 | msm_fd_hw_get(fd, ctx->settings.speed); |
| 365 | |
| 366 | /* Get active buffer */ |
| 367 | MSM_FD_SPIN_LOCK(fd->slock, 1); |
| 368 | active_buf = msm_fd_hw_get_active_buffer(fd, 1); |
| 369 | MSM_FD_SPIN_UNLOCK(fd->slock, 1); |
| 370 | |
| 371 | if (active_buf == NULL) { |
| 372 | dev_dbg(fd->dev, "no active buffer, return\n"); |
| 373 | fd->recovery_mode = 0; |
| 374 | mutex_unlock(&fd->recovery_lock); |
| 375 | return 0; |
| 376 | } |
| 377 | |
| 378 | dev_dbg(fd->dev, "Active Buffer present.. Start re-schedule\n"); |
| 379 | |
| 380 | /* Queue the buffer again */ |
| 381 | msm_fd_hw_add_buffer(fd, active_buf); |
| 382 | |
| 383 | /* Schedule and restart */ |
| 384 | ret = msm_fd_hw_schedule_next_buffer(fd, 1); |
| 385 | if (ret) { |
| 386 | dev_err(fd->dev, "Cannot reschedule buffer, recovery failed\n"); |
| 387 | fd->recovery_mode = 0; |
| 388 | mutex_unlock(&fd->recovery_lock); |
| 389 | return ret; |
| 390 | } |
| 391 | dev_dbg(fd->dev, "Restarted FD after VBIF HAng\n"); |
| 392 | mutex_unlock(&fd->recovery_lock); |
| 393 | } |
| 394 | return 0; |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * msm_fd_open - Fd device open method. |
| 399 | * @file: Pointer to file struct. |
| 400 | */ |
| 401 | static int msm_fd_open(struct file *file) |
| 402 | { |
| 403 | struct msm_fd_device *device = video_drvdata(file); |
| 404 | struct video_device *video = video_devdata(file); |
| 405 | struct fd_ctx *ctx; |
| 406 | int ret; |
| 407 | |
| 408 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
| 409 | if (!ctx) |
| 410 | return -ENOMEM; |
| 411 | |
| 412 | ctx->fd_device = device; |
| 413 | |
| 414 | /* Initialize work buffer handler */ |
| 415 | ctx->work_buf.pool = NULL; |
| 416 | ctx->work_buf.fd = -1; |
| 417 | |
| 418 | /* Set ctx defaults */ |
| 419 | ctx->settings.speed = ctx->fd_device->clk_rates_num - 1; |
| 420 | ctx->settings.angle_index = MSM_FD_DEF_ANGLE_IDX; |
| 421 | ctx->settings.direction_index = MSM_FD_DEF_DIR_IDX; |
| 422 | ctx->settings.min_size_index = MSM_FD_DEF_MIN_SIZE_IDX; |
| 423 | ctx->settings.threshold = MSM_FD_DEF_THRESHOLD; |
| 424 | |
| 425 | atomic_set(&ctx->subscribed_for_event, 0); |
| 426 | |
| 427 | v4l2_fh_init(&ctx->fh, video); |
| 428 | |
| 429 | file->private_data = &ctx->fh; |
| 430 | v4l2_fh_add(&ctx->fh); |
| 431 | |
| 432 | ctx->vb2_q.drv_priv = ctx; |
| 433 | ctx->vb2_q.mem_ops = &msm_fd_vb2_mem_ops; |
| 434 | ctx->vb2_q.ops = &msm_fd_vb2_q_ops; |
| 435 | ctx->vb2_q.buf_struct_size = sizeof(struct msm_fd_buffer); |
| 436 | ctx->vb2_q.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| 437 | ctx->vb2_q.io_modes = VB2_USERPTR; |
| 438 | ctx->vb2_q.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
| 439 | mutex_init(&ctx->lock); |
| 440 | ret = vb2_queue_init(&ctx->vb2_q); |
| 441 | if (ret < 0) { |
| 442 | dev_err(device->dev, "Error queue init\n"); |
| 443 | goto error_vb2_queue_init; |
| 444 | } |
| 445 | |
| 446 | ctx->mem_pool.fd_device = ctx->fd_device; |
| 447 | ctx->stats = vmalloc(sizeof(*ctx->stats) * MSM_FD_MAX_RESULT_BUFS); |
| 448 | if (!ctx->stats) { |
| 449 | dev_err(device->dev, "No memory for face statistics\n"); |
| 450 | ret = -ENOMEM; |
| 451 | goto error_stats_vmalloc; |
| 452 | } |
| 453 | |
| 454 | ret = cam_config_ahb_clk(NULL, 0, CAM_AHB_CLIENT_FD, |
| 455 | CAM_AHB_SVS_VOTE); |
| 456 | if (ret < 0) { |
| 457 | pr_err("%s: failed to vote for AHB\n", __func__); |
| 458 | goto error_ahb_config; |
| 459 | } |
| 460 | |
| 461 | /* Register with CPP VBIF error handler */ |
| 462 | msm_cpp_vbif_register_error_handler((void *)ctx, |
| 463 | VBIF_CLIENT_FD, msm_fd_vbif_error_handler); |
| 464 | |
| 465 | return 0; |
| 466 | |
| 467 | error_ahb_config: |
| 468 | vfree(ctx->stats); |
| 469 | error_stats_vmalloc: |
| 470 | vb2_queue_release(&ctx->vb2_q); |
| 471 | error_vb2_queue_init: |
| 472 | v4l2_fh_del(&ctx->fh); |
| 473 | v4l2_fh_exit(&ctx->fh); |
| 474 | kfree(ctx); |
| 475 | return ret; |
| 476 | } |
| 477 | |
| 478 | /* |
| 479 | * msm_fd_release - Fd device release method. |
| 480 | * @file: Pointer to file struct. |
| 481 | */ |
| 482 | static int msm_fd_release(struct file *file) |
| 483 | { |
| 484 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(file->private_data); |
| 485 | |
| 486 | /* Un-register with CPP VBIF error handler */ |
| 487 | msm_cpp_vbif_register_error_handler((void *)ctx, |
| 488 | VBIF_CLIENT_FD, NULL); |
| 489 | |
| 490 | mutex_lock(&ctx->lock); |
| 491 | vb2_queue_release(&ctx->vb2_q); |
| 492 | mutex_unlock(&ctx->lock); |
| 493 | |
| 494 | vfree(ctx->stats); |
| 495 | |
| 496 | if (ctx->work_buf.fd != -1) |
| 497 | msm_fd_hw_unmap_buffer(&ctx->work_buf); |
| 498 | |
| 499 | v4l2_fh_del(&ctx->fh); |
| 500 | v4l2_fh_exit(&ctx->fh); |
| 501 | |
| 502 | kfree(ctx); |
| 503 | |
| 504 | if (cam_config_ahb_clk(NULL, 0, CAM_AHB_CLIENT_FD, |
| 505 | CAM_AHB_SUSPEND_VOTE) < 0) |
| 506 | pr_err("%s: failed to remove vote for AHB\n", __func__); |
| 507 | |
| 508 | return 0; |
| 509 | } |
| 510 | |
| 511 | /* |
| 512 | * msm_fd_poll - Fd device pool method. |
| 513 | * @file: Pointer to file struct. |
| 514 | * @wait: Pointer to pool table struct. |
| 515 | */ |
| 516 | static unsigned int msm_fd_poll(struct file *file, |
| 517 | struct poll_table_struct *wait) |
| 518 | { |
| 519 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(file->private_data); |
| 520 | unsigned int ret; |
| 521 | |
| 522 | mutex_lock(&ctx->lock); |
| 523 | ret = vb2_poll(&ctx->vb2_q, file, wait); |
| 524 | mutex_unlock(&ctx->lock); |
| 525 | |
| 526 | if (atomic_read(&ctx->subscribed_for_event)) { |
| 527 | poll_wait(file, &ctx->fh.wait, wait); |
| 528 | if (v4l2_event_pending(&ctx->fh)) |
| 529 | ret |= POLLPRI; |
| 530 | } |
| 531 | |
| 532 | return ret; |
| 533 | } |
| 534 | |
| 535 | /* |
| 536 | * msm_fd_private_ioctl - V4l2 private ioctl handler. |
| 537 | * @file: Pointer to file struct. |
| 538 | * @fd: V4l2 device file handle. |
| 539 | * @valid_prio: Priority ioctl valid flag. |
| 540 | * @cmd: Ioctl command. |
| 541 | * @arg: Ioctl argument. |
| 542 | */ |
| 543 | static long msm_fd_private_ioctl(struct file *file, void *fh, |
| 544 | bool valid_prio, unsigned int cmd, void *arg) |
| 545 | { |
| 546 | struct msm_fd_result *req_result = arg; |
| 547 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 548 | struct msm_fd_stats *stats; |
| 549 | int stats_idx; |
| 550 | int ret = 0; |
| 551 | int i; |
| 552 | |
| 553 | switch (cmd) { |
| 554 | case VIDIOC_MSM_FD_GET_RESULT: |
| 555 | if (req_result->frame_id == 0) { |
| 556 | dev_err(ctx->fd_device->dev, "Invalid frame id\n"); |
| 557 | return -EINVAL; |
| 558 | } |
| 559 | |
| 560 | stats_idx = req_result->frame_id % MSM_FD_MAX_RESULT_BUFS; |
| 561 | stats = &ctx->stats[stats_idx]; |
| 562 | if (req_result->frame_id != atomic_read(&stats->frame_id)) { |
| 563 | dev_err(ctx->fd_device->dev, "Stats not available\n"); |
| 564 | return -EINVAL; |
| 565 | } |
| 566 | |
| 567 | if (req_result->face_cnt > stats->face_cnt) |
| 568 | req_result->face_cnt = stats->face_cnt; |
| 569 | |
| 570 | for (i = 0; i < req_result->face_cnt; i++) { |
| 571 | ret = copy_to_user((void __user *) |
| 572 | &req_result->face_data[i], |
| 573 | &stats->face_data[i], |
| 574 | sizeof(struct msm_fd_face_data)); |
| 575 | if (ret) { |
| 576 | dev_err(ctx->fd_device->dev, "Copy to user\n"); |
| 577 | return -EFAULT; |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | if (req_result->frame_id != atomic_read(&stats->frame_id)) { |
| 582 | dev_err(ctx->fd_device->dev, "Erroneous buffer\n"); |
| 583 | return -EINVAL; |
| 584 | } |
| 585 | break; |
| 586 | default: |
| 587 | dev_err(ctx->fd_device->dev, "Wrong ioctl type %x\n", cmd); |
| 588 | ret = -ENOTTY; |
| 589 | break; |
| 590 | } |
| 591 | |
| 592 | return ret; |
| 593 | } |
| 594 | |
| 595 | #ifdef CONFIG_COMPAT |
| 596 | /* |
| 597 | * msm_fd_compat_ioctl32 - Compat ioctl handler function. |
| 598 | * @file: Pointer to file struct. |
| 599 | * @cmd: Ioctl command. |
| 600 | * @arg: Ioctl argument. |
| 601 | */ |
| 602 | static long msm_fd_compat_ioctl32(struct file *file, |
| 603 | unsigned int cmd, unsigned long arg) |
| 604 | { |
| 605 | long ret; |
| 606 | |
| 607 | switch (cmd) { |
| 608 | case VIDIOC_MSM_FD_GET_RESULT32: |
| 609 | { |
| 610 | struct msm_fd_result32 result32; |
| 611 | struct msm_fd_result result; |
| 612 | |
| 613 | if (copy_from_user(&result32, (void __user *)arg, |
| 614 | sizeof(result32))) |
| 615 | return -EFAULT; |
| 616 | |
| 617 | result.frame_id = result32.frame_id; |
| 618 | result.face_cnt = result32.face_cnt; |
| 619 | result.face_data = compat_ptr(result32.face_data); |
| 620 | |
| 621 | ret = msm_fd_private_ioctl(file, file->private_data, |
| 622 | 0, VIDIOC_MSM_FD_GET_RESULT, (void *)&result); |
| 623 | |
| 624 | result32.frame_id = result.frame_id; |
| 625 | result32.face_cnt = result.face_cnt; |
| 626 | |
| 627 | if (copy_to_user((void __user *)arg, &result32, |
| 628 | sizeof(result32))) |
| 629 | return -EFAULT; |
| 630 | |
| 631 | break; |
| 632 | } |
| 633 | default: |
| 634 | ret = -ENOIOCTLCMD; |
| 635 | break; |
| 636 | |
| 637 | } |
| 638 | |
| 639 | return ret; |
| 640 | } |
| 641 | #endif |
| 642 | |
| 643 | /* Fd device file operations callbacks */ |
| 644 | static const struct v4l2_file_operations fd_fops = { |
| 645 | .owner = THIS_MODULE, |
| 646 | .open = msm_fd_open, |
| 647 | .release = msm_fd_release, |
| 648 | .poll = msm_fd_poll, |
| 649 | .unlocked_ioctl = video_ioctl2, |
| 650 | #ifdef CONFIG_COMPAT |
| 651 | .compat_ioctl32 = msm_fd_compat_ioctl32, |
| 652 | #endif |
| 653 | }; |
| 654 | |
| 655 | /* |
| 656 | * msm_fd_querycap - V4l2 ioctl query capability handler. |
| 657 | * @file: Pointer to file struct. |
| 658 | * @fh: V4l2 File handle. |
| 659 | * @cap: Pointer to v4l2_capability struct need to be filled. |
| 660 | */ |
| 661 | static int msm_fd_querycap(struct file *file, |
| 662 | void *fh, struct v4l2_capability *cap) |
| 663 | { |
| 664 | cap->bus_info[0] = 0; |
| 665 | strlcpy(cap->driver, MSM_FD_DRV_NAME, sizeof(cap->driver)); |
| 666 | strlcpy(cap->card, MSM_FD_DRV_NAME, sizeof(cap->card)); |
| 667 | cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT; |
| 668 | |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | /* |
| 673 | * msm_fd_enum_fmt_vid_out - V4l2 ioctl enumerate format handler. |
| 674 | * @file: Pointer to file struct. |
| 675 | * @fh: V4l2 File handle. |
| 676 | * @f: Pointer to v4l2_fmtdesc struct need to be filled. |
| 677 | */ |
| 678 | static int msm_fd_enum_fmt_vid_out(struct file *file, |
| 679 | void *fh, struct v4l2_fmtdesc *f) |
| 680 | { |
| 681 | if (f->index > 0) |
| 682 | return -EINVAL; |
| 683 | |
| 684 | f->pixelformat = V4L2_PIX_FMT_GREY; |
| 685 | strlcpy(f->description, "8 Greyscale", |
| 686 | sizeof(f->description)); |
| 687 | |
| 688 | return 0; |
| 689 | } |
| 690 | |
| 691 | /* |
| 692 | * msm_fd_g_fmt - V4l2 ioctl get format handler. |
| 693 | * @file: Pointer to file struct. |
| 694 | * @fh: V4l2 File handle. |
| 695 | * @f: Pointer to v4l2_format struct need to be filled. |
| 696 | */ |
| 697 | static int msm_fd_g_fmt(struct file *file, void *fh, struct v4l2_format *f) |
| 698 | { |
| 699 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 700 | |
| 701 | return msm_fd_fill_format_from_ctx(f, ctx); |
| 702 | } |
| 703 | |
| 704 | /* |
| 705 | * msm_fd_try_fmt_vid_out - V4l2 ioctl try format handler. |
| 706 | * @file: Pointer to file struct. |
| 707 | * @fh: V4l2 File handle. |
| 708 | * @f: Pointer to v4l2_format struct. |
| 709 | */ |
| 710 | static int msm_fd_try_fmt_vid_out(struct file *file, |
| 711 | void *fh, struct v4l2_format *f) |
| 712 | { |
| 713 | int index; |
| 714 | |
| 715 | index = msm_fd_get_format_index(f); |
| 716 | |
| 717 | return msm_fd_fill_format_from_index(f, index); |
| 718 | } |
| 719 | |
| 720 | /* |
| 721 | * msm_fd_s_fmt_vid_out - V4l2 ioctl set format handler. |
| 722 | * @file: Pointer to file struct. |
| 723 | * @fh: V4l2 File handle. |
| 724 | * @f: Pointer to v4l2_format struct. |
| 725 | */ |
| 726 | static int msm_fd_s_fmt_vid_out(struct file *file, |
| 727 | void *fh, struct v4l2_format *f) |
| 728 | { |
| 729 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 730 | int index; |
| 731 | |
| 732 | index = msm_fd_get_format_index(f); |
| 733 | |
| 734 | msm_fd_fill_format_from_index(f, index); |
| 735 | |
| 736 | ctx->format.size = &fd_size[index]; |
| 737 | ctx->format.pixelformat = f->fmt.pix.pixelformat; |
| 738 | ctx->format.bytesperline = f->fmt.pix.bytesperline; |
| 739 | ctx->format.sizeimage = f->fmt.pix.sizeimage; |
| 740 | |
| 741 | /* Initialize crop */ |
| 742 | ctx->format.crop.top = 0; |
| 743 | ctx->format.crop.left = 0; |
| 744 | ctx->format.crop.width = fd_size[index].width; |
| 745 | ctx->format.crop.height = fd_size[index].height; |
| 746 | |
| 747 | return 0; |
| 748 | } |
| 749 | |
| 750 | /* |
| 751 | * msm_fd_reqbufs - V4l2 ioctl request buffers handler. |
| 752 | * @file: Pointer to file struct. |
| 753 | * @fh: V4l2 File handle. |
| 754 | * @req: Pointer to v4l2_requestbuffer struct. |
| 755 | */ |
| 756 | static int msm_fd_reqbufs(struct file *file, |
| 757 | void *fh, struct v4l2_requestbuffers *req) |
| 758 | { |
| 759 | int ret; |
| 760 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 761 | |
| 762 | mutex_lock(&ctx->lock); |
| 763 | ret = vb2_reqbufs(&ctx->vb2_q, req); |
| 764 | mutex_unlock(&ctx->lock); |
| 765 | return ret; |
| 766 | } |
| 767 | |
| 768 | /* |
| 769 | * msm_fd_qbuf - V4l2 ioctl queue buffer handler. |
| 770 | * @file: Pointer to file struct. |
| 771 | * @fh: V4l2 File handle. |
| 772 | * @pb: Pointer to v4l2_buffer struct. |
| 773 | */ |
| 774 | static int msm_fd_qbuf(struct file *file, void *fh, |
| 775 | struct v4l2_buffer *pb) |
| 776 | { |
| 777 | int ret; |
| 778 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 779 | |
| 780 | mutex_lock(&ctx->lock); |
| 781 | ret = vb2_qbuf(&ctx->vb2_q, pb); |
| 782 | mutex_unlock(&ctx->lock); |
| 783 | return ret; |
| 784 | |
| 785 | } |
| 786 | |
| 787 | /* |
| 788 | * msm_fd_dqbuf - V4l2 ioctl dequeue buffer handler. |
| 789 | * @file: Pointer to file struct. |
| 790 | * @fh: V4l2 File handle. |
| 791 | * @pb: Pointer to v4l2_buffer struct. |
| 792 | */ |
| 793 | static int msm_fd_dqbuf(struct file *file, |
| 794 | void *fh, struct v4l2_buffer *pb) |
| 795 | { |
| 796 | int ret; |
| 797 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 798 | |
| 799 | mutex_lock(&ctx->lock); |
| 800 | ret = vb2_dqbuf(&ctx->vb2_q, pb, file->f_flags & O_NONBLOCK); |
| 801 | mutex_unlock(&ctx->lock); |
| 802 | return ret; |
| 803 | } |
| 804 | |
| 805 | /* |
| 806 | * msm_fd_streamon - V4l2 ioctl stream on handler. |
| 807 | * @file: Pointer to file struct. |
| 808 | * @fh: V4l2 File handle. |
| 809 | * @buf_type: V4l2 buffer type. |
| 810 | */ |
| 811 | static int msm_fd_streamon(struct file *file, |
| 812 | void *fh, enum v4l2_buf_type buf_type) |
| 813 | { |
| 814 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 815 | int ret; |
| 816 | |
| 817 | mutex_lock(&ctx->lock); |
| 818 | ret = vb2_streamon(&ctx->vb2_q, buf_type); |
| 819 | mutex_unlock(&ctx->lock); |
| 820 | if (ret < 0) |
| 821 | dev_err(ctx->fd_device->dev, "Stream on fails\n"); |
| 822 | |
| 823 | return ret; |
| 824 | } |
| 825 | |
| 826 | /* |
| 827 | * msm_fd_streamoff - V4l2 ioctl stream off handler. |
| 828 | * @file: Pointer to file struct. |
| 829 | * @fh: V4l2 File handle. |
| 830 | * @buf_type: V4l2 buffer type. |
| 831 | */ |
| 832 | static int msm_fd_streamoff(struct file *file, |
| 833 | void *fh, enum v4l2_buf_type buf_type) |
| 834 | { |
| 835 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 836 | int ret; |
| 837 | |
| 838 | mutex_lock(&ctx->lock); |
| 839 | ret = vb2_streamoff(&ctx->vb2_q, buf_type); |
| 840 | mutex_unlock(&ctx->lock); |
| 841 | if (ret < 0) |
| 842 | dev_err(ctx->fd_device->dev, "Stream off fails\n"); |
| 843 | |
| 844 | return ret; |
| 845 | } |
| 846 | |
| 847 | /* |
| 848 | * msm_fd_subscribe_event - V4l2 ioctl subscribe for event handler. |
| 849 | * @fh: V4l2 File handle. |
| 850 | * @sub: Pointer to v4l2_event_subscription containing event information. |
| 851 | */ |
| 852 | static int msm_fd_subscribe_event(struct v4l2_fh *fh, |
| 853 | const struct v4l2_event_subscription *sub) |
| 854 | { |
| 855 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 856 | int ret; |
| 857 | |
| 858 | if (sub->type != MSM_EVENT_FD) |
| 859 | return -EINVAL; |
| 860 | |
| 861 | ret = v4l2_event_subscribe(fh, sub, MSM_FD_MAX_RESULT_BUFS, NULL); |
| 862 | if (!ret) |
| 863 | atomic_set(&ctx->subscribed_for_event, 1); |
| 864 | |
| 865 | return ret; |
| 866 | } |
| 867 | |
| 868 | /* |
| 869 | * msm_fd_unsubscribe_event - V4l2 ioctl unsubscribe from event handler. |
| 870 | * @fh: V4l2 File handle. |
| 871 | * @sub: Pointer to v4l2_event_subscription containing event information. |
| 872 | */ |
| 873 | static int msm_fd_unsubscribe_event(struct v4l2_fh *fh, |
| 874 | const struct v4l2_event_subscription *sub) |
| 875 | { |
| 876 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 877 | int ret; |
| 878 | |
| 879 | ret = v4l2_event_unsubscribe(fh, sub); |
| 880 | if (!ret) |
| 881 | atomic_set(&ctx->subscribed_for_event, 0); |
| 882 | |
| 883 | return ret; |
| 884 | } |
| 885 | |
| 886 | /* |
| 887 | * msm_fd_guery_ctrl - V4l2 ioctl query control. |
| 888 | * @file: Pointer to file struct. |
| 889 | * @fh: V4l2 File handle. |
| 890 | * @sub: Pointer to v4l2_queryctrl struct info need to be filled based on id. |
| 891 | */ |
| 892 | static int msm_fd_guery_ctrl(struct file *file, void *fh, |
| 893 | struct v4l2_queryctrl *a) |
| 894 | { |
| 895 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 896 | |
| 897 | switch (a->id) { |
| 898 | case V4L2_CID_FD_SPEED: |
| 899 | a->type = V4L2_CTRL_TYPE_INTEGER; |
| 900 | a->default_value = ctx->fd_device->clk_rates_num; |
| 901 | a->minimum = 0; |
| 902 | a->maximum = ctx->fd_device->clk_rates_num; |
| 903 | a->step = 1; |
| 904 | strlcpy(a->name, "msm fd face speed idx", |
| 905 | sizeof(a->name)); |
| 906 | break; |
| 907 | case V4L2_CID_FD_FACE_ANGLE: |
| 908 | a->type = V4L2_CTRL_TYPE_INTEGER; |
| 909 | a->default_value = msm_fd_angle[MSM_FD_DEF_ANGLE_IDX]; |
| 910 | a->minimum = msm_fd_angle[0]; |
| 911 | a->maximum = msm_fd_angle[ARRAY_SIZE(msm_fd_angle) - 1]; |
| 912 | a->step = 1; |
| 913 | strlcpy(a->name, "msm fd face angle ctrl", |
| 914 | sizeof(a->name)); |
| 915 | break; |
| 916 | case V4L2_CID_FD_FACE_DIRECTION: |
| 917 | a->type = V4L2_CTRL_TYPE_INTEGER; |
| 918 | a->default_value = msm_fd_dir[MSM_FD_DEF_DIR_IDX]; |
| 919 | a->minimum = msm_fd_dir[0]; |
| 920 | a->maximum = msm_fd_dir[ARRAY_SIZE(msm_fd_dir) - 1]; |
| 921 | a->step = 1; |
| 922 | strlcpy(a->name, "msm fd face direction ctrl", |
| 923 | sizeof(a->name)); |
| 924 | break; |
| 925 | case V4L2_CID_FD_MIN_FACE_SIZE: |
| 926 | a->type = V4L2_CTRL_TYPE_INTEGER; |
| 927 | a->default_value = msm_fd_min_size[MSM_FD_DEF_MIN_SIZE_IDX]; |
| 928 | a->minimum = msm_fd_min_size[0]; |
| 929 | a->maximum = msm_fd_min_size[ARRAY_SIZE(msm_fd_min_size) - 1]; |
| 930 | a->step = 1; |
| 931 | strlcpy(a->name, "msm fd minimum face size (pixels)", |
| 932 | sizeof(a->name)); |
| 933 | break; |
| 934 | case V4L2_CID_FD_DETECTION_THRESHOLD: |
| 935 | a->type = V4L2_CTRL_TYPE_INTEGER; |
| 936 | a->default_value = MSM_FD_DEF_THRESHOLD; |
| 937 | a->minimum = 0; |
| 938 | a->maximum = MSM_FD_MAX_THRESHOLD_VALUE; |
| 939 | a->step = 1; |
| 940 | strlcpy(a->name, "msm fd detection threshold", |
| 941 | sizeof(a->name)); |
| 942 | break; |
| 943 | case V4L2_CID_FD_WORK_MEMORY_SIZE: |
| 944 | a->type = V4L2_CTRL_TYPE_INTEGER; |
| 945 | a->default_value = fd_size[0].work_size; |
| 946 | a->minimum = fd_size[(ARRAY_SIZE(fd_size) - 1)].work_size; |
| 947 | a->maximum = fd_size[0].work_size; |
| 948 | a->step = 1; |
| 949 | strlcpy(a->name, "msm fd working memory size", |
| 950 | sizeof(a->name)); |
| 951 | break; |
| 952 | case V4L2_CID_FD_WORK_MEMORY_FD: |
| 953 | a->type = V4L2_CTRL_TYPE_INTEGER; |
| 954 | a->default_value = -1; |
| 955 | a->minimum = 0; |
| 956 | a->maximum = INT_MAX; |
| 957 | a->step = 1; |
| 958 | strlcpy(a->name, "msm fd ion fd of working memory", |
| 959 | sizeof(a->name)); |
| 960 | break; |
| 961 | default: |
| 962 | return -EINVAL; |
| 963 | } |
| 964 | |
| 965 | return 0; |
| 966 | } |
| 967 | |
| 968 | /* |
| 969 | * msm_fd_g_ctrl - V4l2 ioctl get control. |
| 970 | * @file: Pointer to file struct. |
| 971 | * @fh: V4l2 File handle. |
| 972 | * @sub: Pointer to v4l2_queryctrl struct need to be filled. |
| 973 | */ |
| 974 | static int msm_fd_g_ctrl(struct file *file, void *fh, struct v4l2_control *a) |
| 975 | { |
| 976 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 977 | |
| 978 | switch (a->id) { |
| 979 | case V4L2_CID_FD_SPEED: |
| 980 | a->value = ctx->settings.speed; |
| 981 | break; |
| 982 | case V4L2_CID_FD_FACE_ANGLE: |
| 983 | a->value = msm_fd_angle[ctx->settings.angle_index]; |
| 984 | break; |
| 985 | case V4L2_CID_FD_FACE_DIRECTION: |
| 986 | a->value = msm_fd_dir[ctx->settings.direction_index]; |
| 987 | break; |
| 988 | case V4L2_CID_FD_MIN_FACE_SIZE: |
| 989 | a->value = msm_fd_min_size[ctx->settings.min_size_index]; |
| 990 | break; |
| 991 | case V4L2_CID_FD_DETECTION_THRESHOLD: |
| 992 | a->value = ctx->settings.threshold; |
| 993 | break; |
| 994 | case V4L2_CID_FD_WORK_MEMORY_SIZE: |
| 995 | if (!ctx->format.size) |
| 996 | return -EINVAL; |
| 997 | |
| 998 | a->value = ctx->format.size->work_size; |
| 999 | break; |
| 1000 | case V4L2_CID_FD_WORK_MEMORY_FD: |
| 1001 | if (ctx->work_buf.fd == -1) |
| 1002 | return -EINVAL; |
| 1003 | |
| 1004 | a->value = ctx->work_buf.fd; |
| 1005 | break; |
| 1006 | default: |
| 1007 | return -EINVAL; |
| 1008 | } |
| 1009 | |
| 1010 | return 0; |
| 1011 | } |
| 1012 | |
| 1013 | /* |
| 1014 | * msm_fd_s_ctrl - V4l2 ioctl set control. |
| 1015 | * @file: Pointer to file struct. |
| 1016 | * @fh: V4l2 File handle. |
| 1017 | * @sub: Pointer to v4l2_queryctrl struct need to be set. |
| 1018 | */ |
| 1019 | static int msm_fd_s_ctrl(struct file *file, void *fh, struct v4l2_control *a) |
| 1020 | { |
| 1021 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 1022 | int idx; |
| 1023 | int ret; |
| 1024 | |
| 1025 | switch (a->id) { |
| 1026 | case V4L2_CID_FD_SPEED: |
| 1027 | if (a->value > ctx->fd_device->clk_rates_num - 1) |
| 1028 | a->value = ctx->fd_device->clk_rates_num - 1; |
| 1029 | else if (a->value < 0) |
| 1030 | a->value = 0; |
| 1031 | |
| 1032 | ctx->settings.speed = a->value; |
| 1033 | break; |
| 1034 | case V4L2_CID_FD_FACE_ANGLE: |
| 1035 | idx = msm_fd_get_idx_from_value(a->value, msm_fd_angle, |
| 1036 | ARRAY_SIZE(msm_fd_angle)); |
| 1037 | |
| 1038 | ctx->settings.angle_index = idx; |
| 1039 | a->value = msm_fd_angle[ctx->settings.angle_index]; |
| 1040 | break; |
| 1041 | case V4L2_CID_FD_FACE_DIRECTION: |
| 1042 | idx = msm_fd_get_idx_from_value(a->value, msm_fd_dir, |
| 1043 | ARRAY_SIZE(msm_fd_dir)); |
| 1044 | |
| 1045 | ctx->settings.direction_index = idx; |
| 1046 | a->value = msm_fd_dir[ctx->settings.direction_index]; |
| 1047 | break; |
| 1048 | case V4L2_CID_FD_MIN_FACE_SIZE: |
| 1049 | idx = msm_fd_get_idx_from_value(a->value, msm_fd_min_size, |
| 1050 | ARRAY_SIZE(msm_fd_min_size)); |
| 1051 | |
| 1052 | ctx->settings.min_size_index = idx; |
| 1053 | a->value = msm_fd_min_size[ctx->settings.min_size_index]; |
| 1054 | break; |
| 1055 | case V4L2_CID_FD_DETECTION_THRESHOLD: |
| 1056 | if (a->value > MSM_FD_MAX_THRESHOLD_VALUE) |
| 1057 | a->value = MSM_FD_MAX_THRESHOLD_VALUE; |
| 1058 | else if (a->value < 0) |
| 1059 | a->value = 0; |
| 1060 | |
| 1061 | ctx->settings.threshold = a->value; |
| 1062 | break; |
| 1063 | case V4L2_CID_FD_WORK_MEMORY_SIZE: |
| 1064 | if (!ctx->format.size) |
| 1065 | return -EINVAL; |
| 1066 | |
| 1067 | if (a->value < ctx->format.size->work_size) |
| 1068 | a->value = ctx->format.size->work_size; |
| 1069 | break; |
| 1070 | case V4L2_CID_FD_WORK_MEMORY_FD: |
| 1071 | mutex_lock(&ctx->fd_device->recovery_lock); |
| 1072 | if (ctx->work_buf.fd != -1) |
| 1073 | msm_fd_hw_unmap_buffer(&ctx->work_buf); |
| 1074 | if (a->value >= 0) { |
| 1075 | ret = msm_fd_hw_map_buffer(&ctx->mem_pool, |
| 1076 | a->value, &ctx->work_buf); |
| 1077 | if (ret < 0) { |
| 1078 | mutex_unlock(&ctx->fd_device->recovery_lock); |
| 1079 | return ret; |
| 1080 | } |
| 1081 | } |
| 1082 | mutex_unlock(&ctx->fd_device->recovery_lock); |
| 1083 | break; |
| 1084 | default: |
| 1085 | return -EINVAL; |
| 1086 | } |
| 1087 | |
| 1088 | return 0; |
| 1089 | } |
| 1090 | |
| 1091 | /* |
| 1092 | * msm_fd_cropcap - V4l2 ioctl crop capabilities. |
| 1093 | * @file: Pointer to file struct. |
| 1094 | * @fh: V4l2 File handle. |
| 1095 | * @sub: Pointer to v4l2_cropcap struct need to be set. |
| 1096 | */ |
| 1097 | static int msm_fd_cropcap(struct file *file, void *fh, struct v4l2_cropcap *a) |
| 1098 | { |
| 1099 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 1100 | |
| 1101 | if (!ctx->format.size) { |
| 1102 | dev_err(ctx->fd_device->dev, "Cropcap fails format missing\n"); |
| 1103 | return -EINVAL; |
| 1104 | } |
| 1105 | |
| 1106 | a->bounds.top = 0; |
| 1107 | a->bounds.left = 0; |
| 1108 | a->bounds.width = ctx->format.size->width; |
| 1109 | a->bounds.height = ctx->format.size->height; |
| 1110 | |
| 1111 | a->defrect = ctx->format.crop; |
| 1112 | |
| 1113 | a->pixelaspect.numerator = 1; |
| 1114 | a->pixelaspect.denominator = 1; |
| 1115 | |
| 1116 | return 0; |
| 1117 | } |
| 1118 | |
| 1119 | /* |
| 1120 | * msm_fd_g_crop - V4l2 ioctl get crop. |
| 1121 | * @file: Pointer to file struct. |
| 1122 | * @fh: V4l2 File handle. |
| 1123 | * @sub: Pointer to v4l2_crop struct need to be set. |
| 1124 | */ |
| 1125 | static int msm_fd_g_crop(struct file *file, void *fh, struct v4l2_crop *crop) |
| 1126 | { |
| 1127 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 1128 | |
| 1129 | if (!ctx->format.size) { |
| 1130 | dev_err(ctx->fd_device->dev, "Get crop, format missing!\n"); |
| 1131 | return -EINVAL; |
| 1132 | } |
| 1133 | |
| 1134 | crop->c = ctx->format.crop; |
| 1135 | |
| 1136 | return 0; |
| 1137 | } |
| 1138 | |
| 1139 | /* |
| 1140 | * msm_fd_s_crop - V4l2 ioctl set crop. |
| 1141 | * @file: Pointer to file struct. |
| 1142 | * @fh: V4l2 File handle. |
| 1143 | * @sub: Pointer to v4l2_crop struct need to be set. |
| 1144 | */ |
| 1145 | static int msm_fd_s_crop(struct file *file, void *fh, |
| 1146 | const struct v4l2_crop *crop) |
| 1147 | { |
| 1148 | struct fd_ctx *ctx = msm_fd_ctx_from_fh(fh); |
| 1149 | int min_face_size; |
| 1150 | |
| 1151 | if (!ctx->format.size) { |
| 1152 | dev_err(ctx->fd_device->dev, "Get crop, format missing!\n"); |
| 1153 | return -EINVAL; |
| 1154 | } |
| 1155 | |
| 1156 | /* First check that crop is valid */ |
| 1157 | min_face_size = msm_fd_min_size[ctx->settings.min_size_index]; |
| 1158 | |
| 1159 | if (crop->c.width < min_face_size || crop->c.height < min_face_size) |
| 1160 | return -EINVAL; |
| 1161 | |
| 1162 | if (crop->c.width + crop->c.left > ctx->format.size->width) |
| 1163 | return -EINVAL; |
| 1164 | |
| 1165 | if (crop->c.height + crop->c.top > ctx->format.size->height) |
| 1166 | return -EINVAL; |
| 1167 | |
| 1168 | ctx->format.crop = crop->c; |
| 1169 | |
| 1170 | return 0; |
| 1171 | } |
| 1172 | |
| 1173 | /* V4l2 ioctl handlers */ |
| 1174 | static const struct v4l2_ioctl_ops fd_ioctl_ops = { |
| 1175 | .vidioc_querycap = msm_fd_querycap, |
| 1176 | .vidioc_enum_fmt_vid_out = msm_fd_enum_fmt_vid_out, |
| 1177 | .vidioc_g_fmt_vid_out = msm_fd_g_fmt, |
| 1178 | .vidioc_try_fmt_vid_out = msm_fd_try_fmt_vid_out, |
| 1179 | .vidioc_s_fmt_vid_out = msm_fd_s_fmt_vid_out, |
| 1180 | .vidioc_reqbufs = msm_fd_reqbufs, |
| 1181 | .vidioc_qbuf = msm_fd_qbuf, |
| 1182 | .vidioc_dqbuf = msm_fd_dqbuf, |
| 1183 | .vidioc_streamon = msm_fd_streamon, |
| 1184 | .vidioc_streamoff = msm_fd_streamoff, |
| 1185 | .vidioc_queryctrl = msm_fd_guery_ctrl, |
| 1186 | .vidioc_s_ctrl = msm_fd_s_ctrl, |
| 1187 | .vidioc_g_ctrl = msm_fd_g_ctrl, |
| 1188 | .vidioc_cropcap = msm_fd_cropcap, |
| 1189 | .vidioc_g_crop = msm_fd_g_crop, |
| 1190 | .vidioc_s_crop = msm_fd_s_crop, |
| 1191 | .vidioc_subscribe_event = msm_fd_subscribe_event, |
| 1192 | .vidioc_unsubscribe_event = msm_fd_unsubscribe_event, |
| 1193 | .vidioc_default = msm_fd_private_ioctl, |
| 1194 | }; |
| 1195 | |
| 1196 | /* |
| 1197 | * msm_fd_fill_results - Read and fill face detection result. |
| 1198 | * @fd: Pointer to fd device. |
| 1199 | * @face: Pointer of face data which information need to be stored. |
| 1200 | * @idx: Face number index need to be filled. |
| 1201 | */ |
| 1202 | static void msm_fd_fill_results(struct msm_fd_device *fd, |
| 1203 | struct msm_fd_face_data *face, int idx) |
| 1204 | { |
| 1205 | int half_face_size; |
| 1206 | |
| 1207 | msm_fd_hw_get_result_angle_pose(fd, idx, &face->angle, &face->pose); |
| 1208 | |
| 1209 | msm_fd_hw_get_result_conf_size(fd, idx, &face->confidence, |
| 1210 | &face->face.width); |
| 1211 | face->face.height = face->face.width; |
| 1212 | |
| 1213 | face->face.left = msm_fd_hw_get_result_x(fd, idx); |
| 1214 | face->face.top = msm_fd_hw_get_result_y(fd, idx); |
| 1215 | |
| 1216 | half_face_size = (face->face.width >> 1); |
| 1217 | if (face->face.left > half_face_size) |
| 1218 | face->face.left -= half_face_size; |
| 1219 | else |
| 1220 | face->face.left = 0; |
| 1221 | |
| 1222 | half_face_size = (face->face.height >> 1); |
| 1223 | if (face->face.top > half_face_size) |
| 1224 | face->face.top -= half_face_size; |
| 1225 | else |
| 1226 | face->face.top = 0; |
| 1227 | } |
| 1228 | |
| 1229 | /* |
| 1230 | * msm_fd_wq_handler - Fd device workqueue handler. |
| 1231 | * @work: Pointer to work struct. |
| 1232 | * |
| 1233 | * This function is bottom half of fd irq what it does: |
| 1234 | * |
| 1235 | * - Stop the fd engine. |
| 1236 | * - Getter fd result and store in stats buffer. |
| 1237 | * - If available schedule next buffer for processing. |
| 1238 | * - Sent event to v4l2. |
| 1239 | * - Release buffer from v4l2 queue. |
| 1240 | */ |
| 1241 | static void msm_fd_wq_handler(struct work_struct *work) |
| 1242 | { |
| 1243 | struct msm_fd_buffer *active_buf; |
| 1244 | struct msm_fd_stats *stats; |
| 1245 | struct msm_fd_event *fd_event; |
| 1246 | struct msm_fd_device *fd; |
| 1247 | struct fd_ctx *ctx; |
| 1248 | struct v4l2_event event; |
| 1249 | int i; |
| 1250 | |
| 1251 | fd = container_of(work, struct msm_fd_device, work); |
| 1252 | MSM_FD_SPIN_LOCK(fd->slock, 1); |
| 1253 | active_buf = msm_fd_hw_get_active_buffer(fd, 0); |
| 1254 | if (!active_buf) { |
| 1255 | /* This should never happen, something completely wrong */ |
| 1256 | dev_err(fd->dev, "Oops no active buffer empty queue\n"); |
| 1257 | MSM_FD_SPIN_UNLOCK(fd->slock, 1); |
| 1258 | return; |
| 1259 | } |
| 1260 | ctx = vb2_get_drv_priv(active_buf->vb_v4l2_buf.vb2_buf.vb2_queue); |
| 1261 | |
| 1262 | /* Increment sequence number, 0 means sequence is not valid */ |
| 1263 | ctx->sequence++; |
| 1264 | if (unlikely(!ctx->sequence)) |
| 1265 | ctx->sequence = 1; |
| 1266 | |
| 1267 | /* Fill face detection statistics */ |
| 1268 | stats = &ctx->stats[ctx->sequence % MSM_FD_MAX_RESULT_BUFS]; |
| 1269 | |
| 1270 | /* First mark stats as invalid */ |
| 1271 | atomic_set(&stats->frame_id, 0); |
| 1272 | |
| 1273 | stats->face_cnt = msm_fd_hw_get_face_count(fd); |
| 1274 | for (i = 0; i < stats->face_cnt; i++) |
| 1275 | msm_fd_fill_results(fd, &stats->face_data[i], i); |
| 1276 | |
| 1277 | /* Stats are ready, set correct frame id */ |
| 1278 | atomic_set(&stats->frame_id, ctx->sequence); |
| 1279 | |
| 1280 | /* If Recovery mode is on, we got IRQ after recovery, reset it */ |
| 1281 | if (fd->recovery_mode) { |
| 1282 | fd->recovery_mode = 0; |
| 1283 | dev_dbg(fd->dev, "Got IRQ after Recovery\n"); |
| 1284 | } |
| 1285 | |
| 1286 | if (fd->state == MSM_FD_DEVICE_RUNNING) { |
| 1287 | /* We have the data from fd hw, we can start next processing */ |
| 1288 | msm_fd_hw_schedule_next_buffer(fd, 0); |
| 1289 | } |
| 1290 | |
| 1291 | /* Return buffer to vb queue */ |
| 1292 | active_buf->vb_v4l2_buf.sequence = ctx->fh.sequence; |
| 1293 | vb2_buffer_done(&active_buf->vb_v4l2_buf.vb2_buf, VB2_BUF_STATE_DONE); |
| 1294 | |
| 1295 | /* Sent event */ |
| 1296 | memset(&event, 0x00, sizeof(event)); |
| 1297 | event.type = MSM_EVENT_FD; |
| 1298 | fd_event = (struct msm_fd_event *)event.u.data; |
| 1299 | fd_event->face_cnt = stats->face_cnt; |
| 1300 | fd_event->buf_index = active_buf->vb_v4l2_buf.vb2_buf.index; |
| 1301 | fd_event->frame_id = ctx->sequence; |
| 1302 | v4l2_event_queue_fh(&ctx->fh, &event); |
| 1303 | |
| 1304 | /* Release buffer from the device */ |
| 1305 | msm_fd_hw_buffer_done(fd, active_buf, 0); |
| 1306 | |
| 1307 | MSM_FD_SPIN_UNLOCK(fd->slock, 1); |
| 1308 | } |
| 1309 | |
| 1310 | /* |
| 1311 | * fd_probe - Fd device probe method. |
| 1312 | * @pdev: Pointer fd platform device. |
| 1313 | */ |
| 1314 | static int fd_probe(struct platform_device *pdev) |
| 1315 | { |
| 1316 | struct msm_fd_device *fd; |
| 1317 | int ret; |
| 1318 | int i; |
| 1319 | |
| 1320 | /* Face detection device struct */ |
| 1321 | fd = kzalloc(sizeof(struct msm_fd_device), GFP_KERNEL); |
| 1322 | if (!fd) |
| 1323 | return -ENOMEM; |
| 1324 | |
| 1325 | mutex_init(&fd->lock); |
| 1326 | spin_lock_init(&fd->slock); |
| 1327 | mutex_init(&fd->recovery_lock); |
| 1328 | init_completion(&fd->hw_halt_completion); |
| 1329 | INIT_LIST_HEAD(&fd->buf_queue); |
| 1330 | fd->pdev = pdev; |
| 1331 | fd->dev = &pdev->dev; |
| 1332 | |
| 1333 | /* Get resources */ |
| 1334 | ret = msm_fd_hw_get_mem_resources(pdev, fd); |
| 1335 | if (ret < 0) { |
| 1336 | dev_err(&pdev->dev, "Fail get resources\n"); |
| 1337 | ret = -ENODEV; |
| 1338 | goto error_mem_resources; |
| 1339 | } |
| 1340 | |
| 1341 | ret = msm_camera_get_regulator_info(pdev, &fd->vdd_info, |
| 1342 | &fd->num_reg); |
| 1343 | if (ret < 0) { |
| 1344 | dev_err(&pdev->dev, "Fail to get regulators\n"); |
| 1345 | goto error_get_regulator; |
| 1346 | } |
| 1347 | ret = msm_camera_get_clk_info_and_rates(pdev, &fd->clk_info, |
| 1348 | &fd->clk, &fd->clk_rates, &fd->clk_rates_num, &fd->clk_num); |
| 1349 | if (ret < 0) { |
| 1350 | dev_err(&pdev->dev, "Fail to get clocks\n"); |
| 1351 | goto error_get_clocks; |
| 1352 | } |
| 1353 | |
| 1354 | /*set memcore and mem periphery logic flags to 0*/ |
| 1355 | for (i = 0; i < fd->clk_num; i++) { |
| 1356 | if ((strcmp(fd->clk_info[i].clk_name, |
| 1357 | "mmss_fd_core_clk") == 0) || |
| 1358 | (strcmp(fd->clk_info[i].clk_name, |
| 1359 | "mmss_fd_core_uar_clk") == 0)) { |
| 1360 | msm_camera_set_clk_flags(fd->clk[i], |
| 1361 | CLKFLAG_NORETAIN_MEM); |
| 1362 | msm_camera_set_clk_flags(fd->clk[i], |
| 1363 | CLKFLAG_NORETAIN_PERIPH); |
| 1364 | } |
| 1365 | } |
| 1366 | |
| 1367 | ret = msm_camera_register_bus_client(pdev, CAM_BUS_CLIENT_FD); |
| 1368 | if (ret < 0) { |
| 1369 | dev_err(&pdev->dev, "Fail to get bus\n"); |
| 1370 | goto error_get_bus; |
| 1371 | } |
| 1372 | |
| 1373 | /* Get face detect hw before read engine revision */ |
| 1374 | ret = msm_fd_hw_get(fd, 0); |
| 1375 | if (ret < 0) { |
| 1376 | dev_err(&pdev->dev, "Fail to get hw\n"); |
| 1377 | goto error_hw_get_request_irq; |
| 1378 | } |
| 1379 | fd->hw_revision = msm_fd_hw_get_revision(fd); |
| 1380 | |
| 1381 | msm_fd_hw_put(fd); |
| 1382 | |
| 1383 | ret = msm_fd_hw_request_irq(pdev, fd, msm_fd_wq_handler); |
| 1384 | if (ret < 0) { |
| 1385 | dev_err(&pdev->dev, "Fail request irq\n"); |
| 1386 | goto error_hw_get_request_irq; |
| 1387 | } |
| 1388 | |
| 1389 | /* v4l2 device */ |
| 1390 | ret = v4l2_device_register(&pdev->dev, &fd->v4l2_dev); |
| 1391 | if (ret < 0) { |
| 1392 | dev_err(&pdev->dev, "Failed to register v4l2 device\n"); |
| 1393 | ret = -ENOENT; |
| 1394 | goto error_v4l2_register; |
| 1395 | } |
| 1396 | |
| 1397 | fd->video.fops = &fd_fops; |
| 1398 | fd->video.ioctl_ops = &fd_ioctl_ops; |
| 1399 | fd->video.minor = -1; |
| 1400 | fd->video.release = video_device_release; |
| 1401 | fd->video.v4l2_dev = &fd->v4l2_dev; |
| 1402 | fd->video.vfl_dir = VFL_DIR_TX; |
| 1403 | fd->video.vfl_type = VFL_TYPE_GRABBER; |
| 1404 | strlcpy(fd->video.name, MSM_FD_DRV_NAME, sizeof(fd->video.name)); |
| 1405 | |
| 1406 | ret = video_register_device(&fd->video, VFL_TYPE_GRABBER, -1); |
| 1407 | if (ret < 0) { |
| 1408 | v4l2_err(&fd->v4l2_dev, "Failed to register video device\n"); |
| 1409 | goto error_video_register; |
| 1410 | } |
| 1411 | |
| 1412 | video_set_drvdata(&fd->video, fd); |
| 1413 | |
| 1414 | platform_set_drvdata(pdev, fd); |
| 1415 | |
| 1416 | return 0; |
| 1417 | |
| 1418 | error_video_register: |
| 1419 | v4l2_device_unregister(&fd->v4l2_dev); |
| 1420 | error_v4l2_register: |
| 1421 | msm_fd_hw_release_irq(fd); |
| 1422 | error_hw_get_request_irq: |
| 1423 | msm_camera_unregister_bus_client(CAM_BUS_CLIENT_FD); |
| 1424 | error_get_bus: |
| 1425 | msm_camera_put_clk_info_and_rates(pdev, &fd->clk_info, |
| 1426 | &fd->clk, &fd->clk_rates, fd->clk_rates_num, fd->clk_num); |
| 1427 | error_get_clocks: |
| 1428 | msm_camera_put_regulators(pdev, &fd->vdd_info, fd->num_reg); |
| 1429 | error_get_regulator: |
| 1430 | msm_fd_hw_release_mem_resources(fd); |
| 1431 | error_mem_resources: |
| 1432 | kfree(fd); |
| 1433 | return ret; |
| 1434 | } |
| 1435 | |
| 1436 | /* |
| 1437 | * fd_device_remove - Fd device remove method. |
| 1438 | * @pdev: Pointer fd platform device. |
| 1439 | */ |
| 1440 | static int fd_device_remove(struct platform_device *pdev) |
| 1441 | { |
| 1442 | struct msm_fd_device *fd; |
| 1443 | |
| 1444 | fd = platform_get_drvdata(pdev); |
| 1445 | if (fd == NULL) { |
| 1446 | dev_err(&pdev->dev, "Can not get fd drvdata\n"); |
| 1447 | return 0; |
| 1448 | } |
| 1449 | video_unregister_device(&fd->video); |
| 1450 | v4l2_device_unregister(&fd->v4l2_dev); |
| 1451 | msm_fd_hw_release_irq(fd); |
| 1452 | msm_camera_unregister_bus_client(CAM_BUS_CLIENT_FD); |
| 1453 | msm_camera_put_clk_info_and_rates(pdev, &fd->clk_info, |
| 1454 | &fd->clk, &fd->clk_rates, fd->clk_rates_num, fd->clk_num); |
| 1455 | msm_camera_put_regulators(pdev, &fd->vdd_info, fd->num_reg); |
| 1456 | msm_fd_hw_release_mem_resources(fd); |
| 1457 | kfree(fd); |
| 1458 | |
| 1459 | return 0; |
| 1460 | } |
| 1461 | |
| 1462 | /* Device tree match struct */ |
| 1463 | static const struct of_device_id msm_fd_dt_match[] = { |
| 1464 | {.compatible = "qcom,face-detection"}, |
| 1465 | {} |
| 1466 | }; |
| 1467 | |
| 1468 | /* Fd platform driver definition */ |
| 1469 | static struct platform_driver fd_driver = { |
| 1470 | .probe = fd_probe, |
| 1471 | .remove = fd_device_remove, |
| 1472 | .driver = { |
| 1473 | .name = MSM_FD_DRV_NAME, |
| 1474 | .owner = THIS_MODULE, |
| 1475 | .of_match_table = msm_fd_dt_match, |
| 1476 | }, |
| 1477 | }; |
| 1478 | |
| 1479 | static int __init msm_fd_init_module(void) |
| 1480 | { |
| 1481 | return platform_driver_register(&fd_driver); |
| 1482 | } |
| 1483 | |
| 1484 | static void __exit msm_fd_exit_module(void) |
| 1485 | { |
| 1486 | platform_driver_unregister(&fd_driver); |
| 1487 | } |
| 1488 | |
| 1489 | module_init(msm_fd_init_module); |
| 1490 | module_exit(msm_fd_exit_module); |
| 1491 | MODULE_DESCRIPTION("MSM FD driver"); |
| 1492 | MODULE_LICENSE("GPL v2"); |