Muralidharan Karicheri | 6ffefff | 2009-09-16 14:31:10 -0300 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2009 Texas Instruments Inc |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 | * |
| 18 | * TODO : add support for VBI & HBI data service |
| 19 | * add static buffer allocation |
| 20 | */ |
| 21 | #include <linux/kernel.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/errno.h> |
| 25 | #include <linux/fs.h> |
| 26 | #include <linux/mm.h> |
| 27 | #include <linux/interrupt.h> |
| 28 | #include <linux/workqueue.h> |
| 29 | #include <linux/string.h> |
| 30 | #include <linux/videodev2.h> |
| 31 | #include <linux/wait.h> |
| 32 | #include <linux/time.h> |
| 33 | #include <linux/i2c.h> |
| 34 | #include <linux/platform_device.h> |
| 35 | #include <linux/io.h> |
| 36 | #include <linux/version.h> |
| 37 | #include <media/v4l2-device.h> |
| 38 | #include <media/v4l2-ioctl.h> |
| 39 | |
| 40 | #include "vpif_capture.h" |
| 41 | #include "vpif.h" |
| 42 | |
| 43 | MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver"); |
| 44 | MODULE_LICENSE("GPL"); |
| 45 | |
| 46 | #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg) |
| 47 | #define vpif_dbg(level, debug, fmt, arg...) \ |
| 48 | v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg) |
| 49 | |
| 50 | static int debug = 1; |
| 51 | static u32 ch0_numbuffers = 3; |
| 52 | static u32 ch1_numbuffers = 3; |
| 53 | static u32 ch0_bufsize = 1920 * 1080 * 2; |
| 54 | static u32 ch1_bufsize = 720 * 576 * 2; |
| 55 | |
| 56 | module_param(debug, int, 0644); |
| 57 | module_param(ch0_numbuffers, uint, S_IRUGO); |
| 58 | module_param(ch1_numbuffers, uint, S_IRUGO); |
| 59 | module_param(ch0_bufsize, uint, S_IRUGO); |
| 60 | module_param(ch1_bufsize, uint, S_IRUGO); |
| 61 | |
| 62 | MODULE_PARM_DESC(debug, "Debug level 0-1"); |
| 63 | MODULE_PARM_DESC(ch2_numbuffers, "Channel0 buffer count (default:3)"); |
| 64 | MODULE_PARM_DESC(ch3_numbuffers, "Channel1 buffer count (default:3)"); |
| 65 | MODULE_PARM_DESC(ch2_bufsize, "Channel0 buffer size (default:1920 x 1080 x 2)"); |
| 66 | MODULE_PARM_DESC(ch3_bufsize, "Channel1 buffer size (default:720 x 576 x 2)"); |
| 67 | |
| 68 | static struct vpif_config_params config_params = { |
| 69 | .min_numbuffers = 3, |
| 70 | .numbuffers[0] = 3, |
| 71 | .numbuffers[1] = 3, |
| 72 | .min_bufsize[0] = 720 * 480 * 2, |
| 73 | .min_bufsize[1] = 720 * 480 * 2, |
| 74 | .channel_bufsize[0] = 1920 * 1080 * 2, |
| 75 | .channel_bufsize[1] = 720 * 576 * 2, |
| 76 | }; |
| 77 | |
| 78 | /* global variables */ |
| 79 | static struct vpif_device vpif_obj = { {NULL} }; |
| 80 | static struct device *vpif_dev; |
| 81 | |
| 82 | /** |
| 83 | * ch_params: video standard configuration parameters for vpif |
| 84 | */ |
| 85 | static const struct vpif_channel_config_params ch_params[] = { |
| 86 | { |
| 87 | "NTSC_M", 720, 480, 30, 0, 1, 268, 1440, 1, 23, 263, 266, |
| 88 | 286, 525, 525, 0, 1, 0, V4L2_STD_525_60, |
| 89 | }, |
| 90 | { |
| 91 | "PAL_BDGHIK", 720, 576, 25, 0, 1, 280, 1440, 1, 23, 311, 313, |
| 92 | 336, 624, 625, 0, 1, 0, V4L2_STD_625_50, |
| 93 | }, |
| 94 | }; |
| 95 | |
| 96 | /** |
| 97 | * vpif_uservirt_to_phys : translate user/virtual address to phy address |
| 98 | * @virtp: user/virtual address |
| 99 | * |
| 100 | * This inline function is used to convert user space virtual address to |
| 101 | * physical address. |
| 102 | */ |
| 103 | static inline u32 vpif_uservirt_to_phys(u32 virtp) |
| 104 | { |
| 105 | unsigned long physp = 0; |
| 106 | struct mm_struct *mm = current->mm; |
| 107 | struct vm_area_struct *vma; |
| 108 | |
| 109 | vma = find_vma(mm, virtp); |
| 110 | |
| 111 | /* For kernel direct-mapped memory, take the easy way */ |
| 112 | if (virtp >= PAGE_OFFSET) |
| 113 | physp = virt_to_phys((void *)virtp); |
| 114 | else if (vma && (vma->vm_flags & VM_IO) && (vma->vm_pgoff)) |
| 115 | /** |
| 116 | * this will catch, kernel-allocated, mmaped-to-usermode |
| 117 | * addresses |
| 118 | */ |
| 119 | physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start); |
| 120 | else { |
| 121 | /* otherwise, use get_user_pages() for general userland pages */ |
| 122 | int res, nr_pages = 1; |
| 123 | struct page *pages; |
| 124 | |
| 125 | down_read(¤t->mm->mmap_sem); |
| 126 | |
| 127 | res = get_user_pages(current, current->mm, |
| 128 | virtp, nr_pages, 1, 0, &pages, NULL); |
| 129 | up_read(¤t->mm->mmap_sem); |
| 130 | |
| 131 | if (res == nr_pages) |
| 132 | physp = __pa(page_address(&pages[0]) + |
| 133 | (virtp & ~PAGE_MASK)); |
| 134 | else { |
| 135 | vpif_err("get_user_pages failed\n"); |
| 136 | return 0; |
| 137 | } |
| 138 | } |
| 139 | return physp; |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * buffer_prepare : callback function for buffer prepare |
| 144 | * @q : buffer queue ptr |
| 145 | * @vb: ptr to video buffer |
| 146 | * @field: field info |
| 147 | * |
| 148 | * This is the callback function for buffer prepare when videobuf_qbuf() |
| 149 | * function is called. The buffer is prepared and user space virtual address |
| 150 | * or user address is converted into physical address |
| 151 | */ |
| 152 | static int vpif_buffer_prepare(struct videobuf_queue *q, |
| 153 | struct videobuf_buffer *vb, |
| 154 | enum v4l2_field field) |
| 155 | { |
| 156 | /* Get the file handle object and channel object */ |
| 157 | struct vpif_fh *fh = q->priv_data; |
| 158 | struct channel_obj *ch = fh->channel; |
| 159 | struct common_obj *common; |
| 160 | unsigned long addr; |
| 161 | |
| 162 | |
| 163 | vpif_dbg(2, debug, "vpif_buffer_prepare\n"); |
| 164 | |
| 165 | common = &ch->common[VPIF_VIDEO_INDEX]; |
| 166 | |
| 167 | /* If buffer is not initialized, initialize it */ |
| 168 | if (VIDEOBUF_NEEDS_INIT == vb->state) { |
| 169 | vb->width = common->width; |
| 170 | vb->height = common->height; |
| 171 | vb->size = vb->width * vb->height; |
| 172 | vb->field = field; |
| 173 | } |
| 174 | vb->state = VIDEOBUF_PREPARED; |
| 175 | /** |
| 176 | * if user pointer memory mechanism is used, get the physical |
| 177 | * address of the buffer |
| 178 | */ |
| 179 | if (V4L2_MEMORY_USERPTR == common->memory) { |
| 180 | if (0 == vb->baddr) { |
| 181 | vpif_dbg(1, debug, "buffer address is 0\n"); |
| 182 | return -EINVAL; |
| 183 | |
| 184 | } |
| 185 | vb->boff = vpif_uservirt_to_phys(vb->baddr); |
| 186 | if (!IS_ALIGNED(vb->boff, 8)) |
| 187 | goto exit; |
| 188 | } |
| 189 | |
| 190 | addr = vb->boff; |
| 191 | if (q->streaming) { |
| 192 | if (!IS_ALIGNED((addr + common->ytop_off), 8) || |
| 193 | !IS_ALIGNED((addr + common->ybtm_off), 8) || |
| 194 | !IS_ALIGNED((addr + common->ctop_off), 8) || |
| 195 | !IS_ALIGNED((addr + common->cbtm_off), 8)) |
| 196 | goto exit; |
| 197 | } |
| 198 | return 0; |
| 199 | exit: |
| 200 | vpif_dbg(1, debug, "buffer_prepare:offset is not aligned to 8 bytes\n"); |
| 201 | return -EINVAL; |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * vpif_buffer_setup : Callback function for buffer setup. |
| 206 | * @q: buffer queue ptr |
| 207 | * @count: number of buffers |
| 208 | * @size: size of the buffer |
| 209 | * |
| 210 | * This callback function is called when reqbuf() is called to adjust |
| 211 | * the buffer count and buffer size |
| 212 | */ |
| 213 | static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count, |
| 214 | unsigned int *size) |
| 215 | { |
| 216 | /* Get the file handle object and channel object */ |
| 217 | struct vpif_fh *fh = q->priv_data; |
| 218 | struct channel_obj *ch = fh->channel; |
| 219 | struct common_obj *common; |
| 220 | |
| 221 | common = &ch->common[VPIF_VIDEO_INDEX]; |
| 222 | |
| 223 | vpif_dbg(2, debug, "vpif_buffer_setup\n"); |
| 224 | |
| 225 | /* If memory type is not mmap, return */ |
| 226 | if (V4L2_MEMORY_MMAP != common->memory) |
| 227 | return 0; |
| 228 | |
| 229 | /* Calculate the size of the buffer */ |
| 230 | *size = config_params.channel_bufsize[ch->channel_id]; |
| 231 | |
| 232 | if (*count < config_params.min_numbuffers) |
| 233 | *count = config_params.min_numbuffers; |
| 234 | return 0; |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * vpif_buffer_queue : Callback function to add buffer to DMA queue |
| 239 | * @q: ptr to videobuf_queue |
| 240 | * @vb: ptr to videobuf_buffer |
| 241 | */ |
| 242 | static void vpif_buffer_queue(struct videobuf_queue *q, |
| 243 | struct videobuf_buffer *vb) |
| 244 | { |
| 245 | /* Get the file handle object and channel object */ |
| 246 | struct vpif_fh *fh = q->priv_data; |
| 247 | struct channel_obj *ch = fh->channel; |
| 248 | struct common_obj *common; |
| 249 | |
| 250 | common = &ch->common[VPIF_VIDEO_INDEX]; |
| 251 | |
| 252 | vpif_dbg(2, debug, "vpif_buffer_queue\n"); |
| 253 | |
| 254 | /* add the buffer to the DMA queue */ |
| 255 | list_add_tail(&vb->queue, &common->dma_queue); |
| 256 | /* Change state of the buffer */ |
| 257 | vb->state = VIDEOBUF_QUEUED; |
| 258 | } |
| 259 | |
| 260 | /** |
| 261 | * vpif_buffer_release : Callback function to free buffer |
| 262 | * @q: buffer queue ptr |
| 263 | * @vb: ptr to video buffer |
| 264 | * |
| 265 | * This function is called from the videobuf layer to free memory |
| 266 | * allocated to the buffers |
| 267 | */ |
| 268 | static void vpif_buffer_release(struct videobuf_queue *q, |
| 269 | struct videobuf_buffer *vb) |
| 270 | { |
| 271 | /* Get the file handle object and channel object */ |
| 272 | struct vpif_fh *fh = q->priv_data; |
| 273 | struct channel_obj *ch = fh->channel; |
| 274 | struct common_obj *common; |
| 275 | |
| 276 | common = &ch->common[VPIF_VIDEO_INDEX]; |
| 277 | |
| 278 | videobuf_dma_contig_free(q, vb); |
| 279 | vb->state = VIDEOBUF_NEEDS_INIT; |
| 280 | } |
| 281 | |
| 282 | static struct videobuf_queue_ops video_qops = { |
| 283 | .buf_setup = vpif_buffer_setup, |
| 284 | .buf_prepare = vpif_buffer_prepare, |
| 285 | .buf_queue = vpif_buffer_queue, |
| 286 | .buf_release = vpif_buffer_release, |
| 287 | }; |
| 288 | |
| 289 | static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = |
| 290 | { {1, 1} }; |
| 291 | |
| 292 | /** |
| 293 | * vpif_process_buffer_complete: process a completed buffer |
| 294 | * @common: ptr to common channel object |
| 295 | * |
| 296 | * This function time stamp the buffer and mark it as DONE. It also |
| 297 | * wake up any process waiting on the QUEUE and set the next buffer |
| 298 | * as current |
| 299 | */ |
| 300 | static void vpif_process_buffer_complete(struct common_obj *common) |
| 301 | { |
| 302 | do_gettimeofday(&common->cur_frm->ts); |
| 303 | common->cur_frm->state = VIDEOBUF_DONE; |
| 304 | wake_up_interruptible(&common->cur_frm->done); |
| 305 | /* Make curFrm pointing to nextFrm */ |
| 306 | common->cur_frm = common->next_frm; |
| 307 | } |
| 308 | |
| 309 | /** |
| 310 | * vpif_schedule_next_buffer: set next buffer address for capture |
| 311 | * @common : ptr to common channel object |
| 312 | * |
| 313 | * This function will get next buffer from the dma queue and |
| 314 | * set the buffer address in the vpif register for capture. |
| 315 | * the buffer is marked active |
| 316 | */ |
| 317 | static void vpif_schedule_next_buffer(struct common_obj *common) |
| 318 | { |
| 319 | unsigned long addr = 0; |
| 320 | |
| 321 | common->next_frm = list_entry(common->dma_queue.next, |
| 322 | struct videobuf_buffer, queue); |
| 323 | /* Remove that buffer from the buffer queue */ |
| 324 | list_del(&common->next_frm->queue); |
| 325 | common->next_frm->state = VIDEOBUF_ACTIVE; |
| 326 | if (V4L2_MEMORY_USERPTR == common->memory) |
| 327 | addr = common->next_frm->boff; |
| 328 | else |
| 329 | addr = videobuf_to_dma_contig(common->next_frm); |
| 330 | |
| 331 | /* Set top and bottom field addresses in VPIF registers */ |
| 332 | common->set_addr(addr + common->ytop_off, |
| 333 | addr + common->ybtm_off, |
| 334 | addr + common->ctop_off, |
| 335 | addr + common->cbtm_off); |
| 336 | } |
| 337 | |
| 338 | /** |
| 339 | * vpif_channel_isr : ISR handler for vpif capture |
| 340 | * @irq: irq number |
| 341 | * @dev_id: dev_id ptr |
| 342 | * |
| 343 | * It changes status of the captured buffer, takes next buffer from the queue |
| 344 | * and sets its address in VPIF registers |
| 345 | */ |
| 346 | static irqreturn_t vpif_channel_isr(int irq, void *dev_id) |
| 347 | { |
| 348 | struct vpif_device *dev = &vpif_obj; |
| 349 | struct common_obj *common; |
| 350 | struct channel_obj *ch; |
| 351 | enum v4l2_field field; |
| 352 | int channel_id = 0; |
| 353 | int fid = -1, i; |
| 354 | |
| 355 | channel_id = *(int *)(dev_id); |
| 356 | ch = dev->dev[channel_id]; |
| 357 | |
| 358 | field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field; |
| 359 | |
| 360 | for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) { |
| 361 | common = &ch->common[i]; |
| 362 | /* skip If streaming is not started in this channel */ |
| 363 | if (0 == common->started) |
| 364 | continue; |
| 365 | |
| 366 | /* Check the field format */ |
| 367 | if (1 == ch->vpifparams.std_info.frm_fmt) { |
| 368 | /* Progressive mode */ |
| 369 | if (list_empty(&common->dma_queue)) |
| 370 | continue; |
| 371 | |
| 372 | if (!channel_first_int[i][channel_id]) |
| 373 | vpif_process_buffer_complete(common); |
| 374 | |
| 375 | channel_first_int[i][channel_id] = 0; |
| 376 | |
| 377 | vpif_schedule_next_buffer(common); |
| 378 | |
| 379 | |
| 380 | channel_first_int[i][channel_id] = 0; |
| 381 | } else { |
| 382 | /** |
| 383 | * Interlaced mode. If it is first interrupt, ignore |
| 384 | * it |
| 385 | */ |
| 386 | if (channel_first_int[i][channel_id]) { |
| 387 | channel_first_int[i][channel_id] = 0; |
| 388 | continue; |
| 389 | } |
| 390 | if (0 == i) { |
| 391 | ch->field_id ^= 1; |
| 392 | /* Get field id from VPIF registers */ |
| 393 | fid = vpif_channel_getfid(ch->channel_id); |
| 394 | if (fid != ch->field_id) { |
| 395 | /** |
| 396 | * If field id does not match stored |
| 397 | * field id, make them in sync |
| 398 | */ |
| 399 | if (0 == fid) |
| 400 | ch->field_id = fid; |
| 401 | return IRQ_HANDLED; |
| 402 | } |
| 403 | } |
| 404 | /* device field id and local field id are in sync */ |
| 405 | if (0 == fid) { |
| 406 | /* this is even field */ |
| 407 | if (common->cur_frm == common->next_frm) |
| 408 | continue; |
| 409 | |
| 410 | /* mark the current buffer as done */ |
| 411 | vpif_process_buffer_complete(common); |
| 412 | } else if (1 == fid) { |
| 413 | /* odd field */ |
| 414 | if (list_empty(&common->dma_queue) || |
| 415 | (common->cur_frm != common->next_frm)) |
| 416 | continue; |
| 417 | |
| 418 | vpif_schedule_next_buffer(common); |
| 419 | } |
| 420 | } |
| 421 | } |
| 422 | return IRQ_HANDLED; |
| 423 | } |
| 424 | |
| 425 | /** |
| 426 | * vpif_update_std_info() - update standard related info |
| 427 | * @ch: ptr to channel object |
| 428 | * |
| 429 | * For a given standard selected by application, update values |
| 430 | * in the device data structures |
| 431 | */ |
| 432 | static int vpif_update_std_info(struct channel_obj *ch) |
| 433 | { |
| 434 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 435 | struct vpif_params *vpifparams = &ch->vpifparams; |
| 436 | const struct vpif_channel_config_params *config; |
| 437 | struct vpif_channel_config_params *std_info; |
| 438 | struct video_obj *vid_ch = &ch->video; |
| 439 | int index; |
| 440 | |
| 441 | vpif_dbg(2, debug, "vpif_update_std_info\n"); |
| 442 | |
| 443 | std_info = &vpifparams->std_info; |
| 444 | |
| 445 | for (index = 0; index < ARRAY_SIZE(ch_params); index++) { |
| 446 | config = &ch_params[index]; |
| 447 | if (config->stdid & vid_ch->stdid) { |
| 448 | memcpy(std_info, config, sizeof(*config)); |
| 449 | break; |
| 450 | } |
| 451 | } |
| 452 | |
| 453 | /* standard not found */ |
| 454 | if (index == ARRAY_SIZE(ch_params)) |
| 455 | return -EINVAL; |
| 456 | |
| 457 | common->fmt.fmt.pix.width = std_info->width; |
| 458 | common->width = std_info->width; |
| 459 | common->fmt.fmt.pix.height = std_info->height; |
| 460 | common->height = std_info->height; |
| 461 | common->fmt.fmt.pix.bytesperline = std_info->width; |
| 462 | vpifparams->video_params.hpitch = std_info->width; |
| 463 | vpifparams->video_params.storage_mode = std_info->frm_fmt; |
| 464 | return 0; |
| 465 | } |
| 466 | |
| 467 | /** |
| 468 | * vpif_calculate_offsets : This function calculates buffers offsets |
| 469 | * @ch : ptr to channel object |
| 470 | * |
| 471 | * This function calculates buffer offsets for Y and C in the top and |
| 472 | * bottom field |
| 473 | */ |
| 474 | static void vpif_calculate_offsets(struct channel_obj *ch) |
| 475 | { |
| 476 | unsigned int hpitch, vpitch, sizeimage; |
| 477 | struct video_obj *vid_ch = &(ch->video); |
| 478 | struct vpif_params *vpifparams = &ch->vpifparams; |
| 479 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 480 | enum v4l2_field field = common->fmt.fmt.pix.field; |
| 481 | |
| 482 | vpif_dbg(2, debug, "vpif_calculate_offsets\n"); |
| 483 | |
| 484 | if (V4L2_FIELD_ANY == field) { |
| 485 | if (vpifparams->std_info.frm_fmt) |
| 486 | vid_ch->buf_field = V4L2_FIELD_NONE; |
| 487 | else |
| 488 | vid_ch->buf_field = V4L2_FIELD_INTERLACED; |
| 489 | } else |
| 490 | vid_ch->buf_field = common->fmt.fmt.pix.field; |
| 491 | |
| 492 | if (V4L2_MEMORY_USERPTR == common->memory) |
| 493 | sizeimage = common->fmt.fmt.pix.sizeimage; |
| 494 | else |
| 495 | sizeimage = config_params.channel_bufsize[ch->channel_id]; |
| 496 | |
| 497 | hpitch = common->fmt.fmt.pix.bytesperline; |
| 498 | vpitch = sizeimage / (hpitch * 2); |
| 499 | |
| 500 | if ((V4L2_FIELD_NONE == vid_ch->buf_field) || |
| 501 | (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) { |
| 502 | /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ |
| 503 | common->ytop_off = 0; |
| 504 | common->ybtm_off = hpitch; |
| 505 | common->ctop_off = sizeimage / 2; |
| 506 | common->cbtm_off = sizeimage / 2 + hpitch; |
| 507 | } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) { |
| 508 | /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ |
| 509 | common->ytop_off = 0; |
| 510 | common->ybtm_off = sizeimage / 4; |
| 511 | common->ctop_off = sizeimage / 2; |
| 512 | common->cbtm_off = common->ctop_off + sizeimage / 4; |
| 513 | } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) { |
| 514 | /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ |
| 515 | common->ybtm_off = 0; |
| 516 | common->ytop_off = sizeimage / 4; |
| 517 | common->cbtm_off = sizeimage / 2; |
| 518 | common->ctop_off = common->cbtm_off + sizeimage / 4; |
| 519 | } |
| 520 | if ((V4L2_FIELD_NONE == vid_ch->buf_field) || |
| 521 | (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) |
| 522 | vpifparams->video_params.storage_mode = 1; |
| 523 | else |
| 524 | vpifparams->video_params.storage_mode = 0; |
| 525 | |
| 526 | if (1 == vpifparams->std_info.frm_fmt) |
| 527 | vpifparams->video_params.hpitch = |
| 528 | common->fmt.fmt.pix.bytesperline; |
| 529 | else { |
| 530 | if ((field == V4L2_FIELD_ANY) |
| 531 | || (field == V4L2_FIELD_INTERLACED)) |
| 532 | vpifparams->video_params.hpitch = |
| 533 | common->fmt.fmt.pix.bytesperline * 2; |
| 534 | else |
| 535 | vpifparams->video_params.hpitch = |
| 536 | common->fmt.fmt.pix.bytesperline; |
| 537 | } |
| 538 | |
| 539 | ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid; |
| 540 | } |
| 541 | |
| 542 | /** |
| 543 | * vpif_config_format: configure default frame format in the device |
| 544 | * ch : ptr to channel object |
| 545 | */ |
| 546 | static void vpif_config_format(struct channel_obj *ch) |
| 547 | { |
| 548 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 549 | |
| 550 | vpif_dbg(2, debug, "vpif_config_format\n"); |
| 551 | |
| 552 | common->fmt.fmt.pix.field = V4L2_FIELD_ANY; |
| 553 | if (config_params.numbuffers[ch->channel_id] == 0) |
| 554 | common->memory = V4L2_MEMORY_USERPTR; |
| 555 | else |
| 556 | common->memory = V4L2_MEMORY_MMAP; |
| 557 | |
| 558 | common->fmt.fmt.pix.sizeimage |
| 559 | = config_params.channel_bufsize[ch->channel_id]; |
| 560 | |
| 561 | if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) |
| 562 | common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8; |
| 563 | else |
| 564 | common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P; |
| 565 | common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 566 | } |
| 567 | |
| 568 | /** |
| 569 | * vpif_get_default_field() - Get default field type based on interface |
| 570 | * @vpif_params - ptr to vpif params |
| 571 | */ |
| 572 | static inline enum v4l2_field vpif_get_default_field( |
| 573 | struct vpif_interface *iface) |
| 574 | { |
| 575 | return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE : |
| 576 | V4L2_FIELD_INTERLACED; |
| 577 | } |
| 578 | |
| 579 | /** |
| 580 | * vpif_check_format() - check given pixel format for compatibility |
| 581 | * @ch - channel ptr |
| 582 | * @pixfmt - Given pixel format |
| 583 | * @update - update the values as per hardware requirement |
| 584 | * |
| 585 | * Check the application pixel format for S_FMT and update the input |
| 586 | * values as per hardware limits for TRY_FMT. The default pixel and |
| 587 | * field format is selected based on interface type. |
| 588 | */ |
| 589 | static int vpif_check_format(struct channel_obj *ch, |
| 590 | struct v4l2_pix_format *pixfmt, |
| 591 | int update) |
| 592 | { |
| 593 | struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); |
| 594 | struct vpif_params *vpif_params = &ch->vpifparams; |
| 595 | enum v4l2_field field = pixfmt->field; |
| 596 | u32 sizeimage, hpitch, vpitch; |
| 597 | int ret = -EINVAL; |
| 598 | |
| 599 | vpif_dbg(2, debug, "vpif_check_format\n"); |
| 600 | /** |
| 601 | * first check for the pixel format. If if_type is Raw bayer, |
| 602 | * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only |
| 603 | * V4L2_PIX_FMT_YUV422P is supported |
| 604 | */ |
| 605 | if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) { |
| 606 | if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) { |
| 607 | if (!update) { |
| 608 | vpif_dbg(2, debug, "invalid pix format\n"); |
| 609 | goto exit; |
| 610 | } |
| 611 | pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8; |
| 612 | } |
| 613 | } else { |
| 614 | if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) { |
| 615 | if (!update) { |
| 616 | vpif_dbg(2, debug, "invalid pixel format\n"); |
| 617 | goto exit; |
| 618 | } |
| 619 | pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P; |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | if (!(VPIF_VALID_FIELD(field))) { |
| 624 | if (!update) { |
| 625 | vpif_dbg(2, debug, "invalid field format\n"); |
| 626 | goto exit; |
| 627 | } |
| 628 | /** |
| 629 | * By default use FIELD_NONE for RAW Bayer capture |
| 630 | * and FIELD_INTERLACED for other interfaces |
| 631 | */ |
| 632 | field = vpif_get_default_field(&vpif_params->iface); |
| 633 | } else if (field == V4L2_FIELD_ANY) |
| 634 | /* unsupported field. Use default */ |
| 635 | field = vpif_get_default_field(&vpif_params->iface); |
| 636 | |
| 637 | /* validate the hpitch */ |
| 638 | hpitch = pixfmt->bytesperline; |
| 639 | if (hpitch < vpif_params->std_info.width) { |
| 640 | if (!update) { |
| 641 | vpif_dbg(2, debug, "invalid hpitch\n"); |
| 642 | goto exit; |
| 643 | } |
| 644 | hpitch = vpif_params->std_info.width; |
| 645 | } |
| 646 | |
| 647 | if (V4L2_MEMORY_USERPTR == common->memory) |
| 648 | sizeimage = pixfmt->sizeimage; |
| 649 | else |
| 650 | sizeimage = config_params.channel_bufsize[ch->channel_id]; |
| 651 | |
| 652 | vpitch = sizeimage / (hpitch * 2); |
| 653 | |
| 654 | /* validate the vpitch */ |
| 655 | if (vpitch < vpif_params->std_info.height) { |
| 656 | if (!update) { |
| 657 | vpif_dbg(2, debug, "Invalid vpitch\n"); |
| 658 | goto exit; |
| 659 | } |
| 660 | vpitch = vpif_params->std_info.height; |
| 661 | } |
| 662 | |
| 663 | /* Check for 8 byte alignment */ |
| 664 | if (!ALIGN(hpitch, 8)) { |
| 665 | if (!update) { |
| 666 | vpif_dbg(2, debug, "invalid pitch alignment\n"); |
| 667 | goto exit; |
| 668 | } |
| 669 | /* adjust to next 8 byte boundary */ |
| 670 | hpitch = (((hpitch + 7) / 8) * 8); |
| 671 | } |
| 672 | /* if update is set, modify the bytesperline and sizeimage */ |
| 673 | if (update) { |
| 674 | pixfmt->bytesperline = hpitch; |
| 675 | pixfmt->sizeimage = hpitch * vpitch * 2; |
| 676 | } |
| 677 | /** |
| 678 | * Image width and height is always based on current standard width and |
| 679 | * height |
| 680 | */ |
| 681 | pixfmt->width = common->fmt.fmt.pix.width; |
| 682 | pixfmt->height = common->fmt.fmt.pix.height; |
| 683 | return 0; |
| 684 | exit: |
| 685 | return ret; |
| 686 | } |
| 687 | |
| 688 | /** |
| 689 | * vpif_config_addr() - function to configure buffer address in vpif |
| 690 | * @ch - channel ptr |
| 691 | * @muxmode - channel mux mode |
| 692 | */ |
| 693 | static void vpif_config_addr(struct channel_obj *ch, int muxmode) |
| 694 | { |
| 695 | struct common_obj *common; |
| 696 | |
| 697 | vpif_dbg(2, debug, "vpif_config_addr\n"); |
| 698 | |
| 699 | common = &(ch->common[VPIF_VIDEO_INDEX]); |
| 700 | |
| 701 | if (VPIF_CHANNEL1_VIDEO == ch->channel_id) |
| 702 | common->set_addr = ch1_set_videobuf_addr; |
| 703 | else if (2 == muxmode) |
| 704 | common->set_addr = ch0_set_videobuf_addr_yc_nmux; |
| 705 | else |
| 706 | common->set_addr = ch0_set_videobuf_addr; |
| 707 | } |
| 708 | |
| 709 | /** |
| 710 | * vpfe_mmap : It is used to map kernel space buffers into user spaces |
| 711 | * @filep: file pointer |
| 712 | * @vma: ptr to vm_area_struct |
| 713 | */ |
| 714 | static int vpif_mmap(struct file *filep, struct vm_area_struct *vma) |
| 715 | { |
| 716 | /* Get the channel object and file handle object */ |
| 717 | struct vpif_fh *fh = filep->private_data; |
| 718 | struct channel_obj *ch = fh->channel; |
| 719 | struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); |
| 720 | |
| 721 | vpif_dbg(2, debug, "vpif_mmap\n"); |
| 722 | |
| 723 | return videobuf_mmap_mapper(&common->buffer_queue, vma); |
| 724 | } |
| 725 | |
| 726 | /** |
| 727 | * vpif_poll: It is used for select/poll system call |
| 728 | * @filep: file pointer |
| 729 | * @wait: poll table to wait |
| 730 | */ |
| 731 | static unsigned int vpif_poll(struct file *filep, poll_table * wait) |
| 732 | { |
| 733 | int err = 0; |
| 734 | struct vpif_fh *fh = filep->private_data; |
| 735 | struct channel_obj *channel = fh->channel; |
| 736 | struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); |
| 737 | |
| 738 | vpif_dbg(2, debug, "vpif_poll\n"); |
| 739 | |
| 740 | if (common->started) |
| 741 | err = videobuf_poll_stream(filep, &common->buffer_queue, wait); |
| 742 | |
| 743 | return 0; |
| 744 | } |
| 745 | |
| 746 | /** |
| 747 | * vpif_open : vpif open handler |
| 748 | * @filep: file ptr |
| 749 | * |
| 750 | * It creates object of file handle structure and stores it in private_data |
| 751 | * member of filepointer |
| 752 | */ |
| 753 | static int vpif_open(struct file *filep) |
| 754 | { |
| 755 | struct vpif_capture_config *config = vpif_dev->platform_data; |
| 756 | struct video_device *vdev = video_devdata(filep); |
| 757 | struct common_obj *common; |
| 758 | struct video_obj *vid_ch; |
| 759 | struct channel_obj *ch; |
| 760 | struct vpif_fh *fh; |
| 761 | int i, ret = 0; |
| 762 | |
| 763 | vpif_dbg(2, debug, "vpif_open\n"); |
| 764 | |
| 765 | ch = video_get_drvdata(vdev); |
| 766 | |
| 767 | vid_ch = &ch->video; |
| 768 | common = &ch->common[VPIF_VIDEO_INDEX]; |
| 769 | |
| 770 | if (mutex_lock_interruptible(&common->lock)) |
| 771 | return -ERESTARTSYS; |
| 772 | |
| 773 | if (NULL == ch->curr_subdev_info) { |
| 774 | /** |
| 775 | * search through the sub device to see a registered |
| 776 | * sub device and make it as current sub device |
| 777 | */ |
| 778 | for (i = 0; i < config->subdev_count; i++) { |
| 779 | if (vpif_obj.sd[i]) { |
| 780 | /* the sub device is registered */ |
| 781 | ch->curr_subdev_info = &config->subdev_info[i]; |
| 782 | /* make first input as the current input */ |
| 783 | vid_ch->input_idx = 0; |
| 784 | break; |
| 785 | } |
| 786 | } |
| 787 | if (i == config->subdev_count) { |
| 788 | vpif_err("No sub device registered\n"); |
| 789 | ret = -ENOENT; |
| 790 | goto exit; |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | /* Allocate memory for the file handle object */ |
| 795 | fh = kmalloc(sizeof(struct vpif_fh), GFP_KERNEL); |
| 796 | if (NULL == fh) { |
| 797 | vpif_err("unable to allocate memory for file handle object\n"); |
| 798 | ret = -ENOMEM; |
| 799 | goto exit; |
| 800 | } |
| 801 | |
| 802 | /* store pointer to fh in private_data member of filep */ |
| 803 | filep->private_data = fh; |
| 804 | fh->channel = ch; |
| 805 | fh->initialized = 0; |
| 806 | /* If decoder is not initialized. initialize it */ |
| 807 | if (!ch->initialized) { |
| 808 | fh->initialized = 1; |
| 809 | ch->initialized = 1; |
| 810 | memset(&(ch->vpifparams), 0, sizeof(struct vpif_params)); |
| 811 | } |
| 812 | /* Increment channel usrs counter */ |
| 813 | ch->usrs++; |
| 814 | /* Set io_allowed member to false */ |
| 815 | fh->io_allowed[VPIF_VIDEO_INDEX] = 0; |
| 816 | /* Initialize priority of this instance to default priority */ |
| 817 | fh->prio = V4L2_PRIORITY_UNSET; |
| 818 | v4l2_prio_open(&ch->prio, &fh->prio); |
| 819 | exit: |
| 820 | mutex_unlock(&common->lock); |
| 821 | return ret; |
| 822 | } |
| 823 | |
| 824 | /** |
| 825 | * vpif_release : function to clean up file close |
| 826 | * @filep: file pointer |
| 827 | * |
| 828 | * This function deletes buffer queue, frees the buffers and the vpfe file |
| 829 | * handle |
| 830 | */ |
| 831 | static int vpif_release(struct file *filep) |
| 832 | { |
| 833 | struct vpif_fh *fh = filep->private_data; |
| 834 | struct channel_obj *ch = fh->channel; |
| 835 | struct common_obj *common; |
| 836 | |
| 837 | vpif_dbg(2, debug, "vpif_release\n"); |
| 838 | |
| 839 | common = &ch->common[VPIF_VIDEO_INDEX]; |
| 840 | |
| 841 | if (mutex_lock_interruptible(&common->lock)) |
| 842 | return -ERESTARTSYS; |
| 843 | |
| 844 | /* if this instance is doing IO */ |
| 845 | if (fh->io_allowed[VPIF_VIDEO_INDEX]) { |
| 846 | /* Reset io_usrs member of channel object */ |
| 847 | common->io_usrs = 0; |
| 848 | /* Disable channel as per its device type and channel id */ |
| 849 | if (VPIF_CHANNEL0_VIDEO == ch->channel_id) { |
| 850 | enable_channel0(0); |
| 851 | channel0_intr_enable(0); |
| 852 | } |
| 853 | if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) || |
| 854 | (2 == common->started)) { |
| 855 | enable_channel1(0); |
| 856 | channel1_intr_enable(0); |
| 857 | } |
| 858 | common->started = 0; |
| 859 | /* Free buffers allocated */ |
| 860 | videobuf_queue_cancel(&common->buffer_queue); |
| 861 | videobuf_mmap_free(&common->buffer_queue); |
| 862 | } |
| 863 | |
| 864 | /* Decrement channel usrs counter */ |
| 865 | ch->usrs--; |
| 866 | |
| 867 | /* unlock mutex on channel object */ |
| 868 | mutex_unlock(&common->lock); |
| 869 | |
| 870 | /* Close the priority */ |
| 871 | v4l2_prio_close(&ch->prio, &fh->prio); |
| 872 | |
| 873 | if (fh->initialized) |
| 874 | ch->initialized = 0; |
| 875 | |
| 876 | filep->private_data = NULL; |
| 877 | kfree(fh); |
| 878 | return 0; |
| 879 | } |
| 880 | |
| 881 | /** |
| 882 | * vpif_reqbufs() - request buffer handler |
| 883 | * @file: file ptr |
| 884 | * @priv: file handle |
| 885 | * @reqbuf: request buffer structure ptr |
| 886 | */ |
| 887 | static int vpif_reqbufs(struct file *file, void *priv, |
| 888 | struct v4l2_requestbuffers *reqbuf) |
| 889 | { |
| 890 | struct vpif_fh *fh = priv; |
| 891 | struct channel_obj *ch = fh->channel; |
| 892 | struct common_obj *common; |
| 893 | u8 index = 0; |
| 894 | int ret = 0; |
| 895 | |
| 896 | vpif_dbg(2, debug, "vpif_reqbufs\n"); |
| 897 | |
| 898 | /** |
| 899 | * This file handle has not initialized the channel, |
| 900 | * It is not allowed to do settings |
| 901 | */ |
| 902 | if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) |
| 903 | || (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { |
| 904 | if (!fh->initialized) { |
| 905 | vpif_dbg(1, debug, "Channel Busy\n"); |
| 906 | return -EBUSY; |
| 907 | } |
| 908 | } |
| 909 | |
| 910 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type) |
| 911 | return -EINVAL; |
| 912 | |
| 913 | index = VPIF_VIDEO_INDEX; |
| 914 | |
| 915 | common = &ch->common[index]; |
| 916 | |
| 917 | if (mutex_lock_interruptible(&common->lock)) |
| 918 | return -ERESTARTSYS; |
| 919 | |
| 920 | if (0 != common->io_usrs) { |
| 921 | ret = -EBUSY; |
| 922 | goto reqbuf_exit; |
| 923 | } |
| 924 | |
| 925 | /* Initialize videobuf queue as per the buffer type */ |
| 926 | videobuf_queue_dma_contig_init(&common->buffer_queue, |
| 927 | &video_qops, NULL, |
| 928 | &common->irqlock, |
| 929 | reqbuf->type, |
| 930 | common->fmt.fmt.pix.field, |
| 931 | sizeof(struct videobuf_buffer), fh); |
| 932 | |
| 933 | /* Set io allowed member of file handle to TRUE */ |
| 934 | fh->io_allowed[index] = 1; |
| 935 | /* Increment io usrs member of channel object to 1 */ |
| 936 | common->io_usrs = 1; |
| 937 | /* Store type of memory requested in channel object */ |
| 938 | common->memory = reqbuf->memory; |
| 939 | INIT_LIST_HEAD(&common->dma_queue); |
| 940 | |
| 941 | /* Allocate buffers */ |
| 942 | ret = videobuf_reqbufs(&common->buffer_queue, reqbuf); |
| 943 | |
| 944 | reqbuf_exit: |
| 945 | mutex_unlock(&common->lock); |
| 946 | return ret; |
| 947 | } |
| 948 | |
| 949 | /** |
| 950 | * vpif_querybuf() - query buffer handler |
| 951 | * @file: file ptr |
| 952 | * @priv: file handle |
| 953 | * @buf: v4l2 buffer structure ptr |
| 954 | */ |
| 955 | static int vpif_querybuf(struct file *file, void *priv, |
| 956 | struct v4l2_buffer *buf) |
| 957 | { |
| 958 | struct vpif_fh *fh = priv; |
| 959 | struct channel_obj *ch = fh->channel; |
| 960 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 961 | |
| 962 | vpif_dbg(2, debug, "vpif_querybuf\n"); |
| 963 | |
| 964 | if (common->fmt.type != buf->type) |
| 965 | return -EINVAL; |
| 966 | |
| 967 | if (common->memory != V4L2_MEMORY_MMAP) { |
| 968 | vpif_dbg(1, debug, "Invalid memory\n"); |
| 969 | return -EINVAL; |
| 970 | } |
| 971 | |
| 972 | return videobuf_querybuf(&common->buffer_queue, buf); |
| 973 | } |
| 974 | |
| 975 | /** |
| 976 | * vpif_qbuf() - query buffer handler |
| 977 | * @file: file ptr |
| 978 | * @priv: file handle |
| 979 | * @buf: v4l2 buffer structure ptr |
| 980 | */ |
| 981 | static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) |
| 982 | { |
| 983 | |
| 984 | struct vpif_fh *fh = priv; |
| 985 | struct channel_obj *ch = fh->channel; |
| 986 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 987 | struct v4l2_buffer tbuf = *buf; |
| 988 | struct videobuf_buffer *buf1; |
| 989 | unsigned long addr = 0; |
| 990 | unsigned long flags; |
| 991 | int ret = 0; |
| 992 | |
| 993 | vpif_dbg(2, debug, "vpif_qbuf\n"); |
| 994 | |
| 995 | if (common->fmt.type != tbuf.type) { |
| 996 | vpif_err("invalid buffer type\n"); |
| 997 | return -EINVAL; |
| 998 | } |
| 999 | |
| 1000 | if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { |
| 1001 | vpif_err("fh io not allowed \n"); |
| 1002 | return -EACCES; |
| 1003 | } |
| 1004 | |
| 1005 | if (!(list_empty(&common->dma_queue)) || |
| 1006 | (common->cur_frm != common->next_frm) || |
| 1007 | !common->started || |
| 1008 | (common->started && (0 == ch->field_id))) |
| 1009 | return videobuf_qbuf(&common->buffer_queue, buf); |
| 1010 | |
| 1011 | /* bufferqueue is empty store buffer address in VPIF registers */ |
| 1012 | mutex_lock(&common->buffer_queue.vb_lock); |
| 1013 | buf1 = common->buffer_queue.bufs[tbuf.index]; |
| 1014 | |
| 1015 | if ((buf1->state == VIDEOBUF_QUEUED) || |
| 1016 | (buf1->state == VIDEOBUF_ACTIVE)) { |
| 1017 | vpif_err("invalid state\n"); |
| 1018 | goto qbuf_exit; |
| 1019 | } |
| 1020 | |
| 1021 | switch (buf1->memory) { |
| 1022 | case V4L2_MEMORY_MMAP: |
| 1023 | if (buf1->baddr == 0) |
| 1024 | goto qbuf_exit; |
| 1025 | break; |
| 1026 | |
| 1027 | case V4L2_MEMORY_USERPTR: |
| 1028 | if (tbuf.length < buf1->bsize) |
| 1029 | goto qbuf_exit; |
| 1030 | |
| 1031 | if ((VIDEOBUF_NEEDS_INIT != buf1->state) |
| 1032 | && (buf1->baddr != tbuf.m.userptr)) |
| 1033 | vpif_buffer_release(&common->buffer_queue, buf1); |
| 1034 | buf1->baddr = tbuf.m.userptr; |
| 1035 | break; |
| 1036 | |
| 1037 | default: |
| 1038 | goto qbuf_exit; |
| 1039 | } |
| 1040 | |
| 1041 | local_irq_save(flags); |
| 1042 | ret = vpif_buffer_prepare(&common->buffer_queue, buf1, |
| 1043 | common->buffer_queue.field); |
| 1044 | if (ret < 0) { |
| 1045 | local_irq_restore(flags); |
| 1046 | goto qbuf_exit; |
| 1047 | } |
| 1048 | |
| 1049 | buf1->state = VIDEOBUF_ACTIVE; |
| 1050 | |
| 1051 | if (V4L2_MEMORY_USERPTR == common->memory) |
| 1052 | addr = buf1->boff; |
| 1053 | else |
| 1054 | addr = videobuf_to_dma_contig(buf1); |
| 1055 | |
| 1056 | common->next_frm = buf1; |
| 1057 | common->set_addr(addr + common->ytop_off, |
| 1058 | addr + common->ybtm_off, |
| 1059 | addr + common->ctop_off, |
| 1060 | addr + common->cbtm_off); |
| 1061 | |
| 1062 | local_irq_restore(flags); |
| 1063 | list_add_tail(&buf1->stream, &common->buffer_queue.stream); |
| 1064 | mutex_unlock(&common->buffer_queue.vb_lock); |
| 1065 | return 0; |
| 1066 | |
| 1067 | qbuf_exit: |
| 1068 | mutex_unlock(&common->buffer_queue.vb_lock); |
| 1069 | return -EINVAL; |
| 1070 | } |
| 1071 | |
| 1072 | /** |
| 1073 | * vpif_dqbuf() - query buffer handler |
| 1074 | * @file: file ptr |
| 1075 | * @priv: file handle |
| 1076 | * @buf: v4l2 buffer structure ptr |
| 1077 | */ |
| 1078 | static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) |
| 1079 | { |
| 1080 | struct vpif_fh *fh = priv; |
| 1081 | struct channel_obj *ch = fh->channel; |
| 1082 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 1083 | |
| 1084 | vpif_dbg(2, debug, "vpif_dqbuf\n"); |
| 1085 | |
| 1086 | return videobuf_dqbuf(&common->buffer_queue, buf, |
| 1087 | file->f_flags & O_NONBLOCK); |
| 1088 | } |
| 1089 | |
| 1090 | /** |
| 1091 | * vpif_streamon() - streamon handler |
| 1092 | * @file: file ptr |
| 1093 | * @priv: file handle |
| 1094 | * @buftype: v4l2 buffer type |
| 1095 | */ |
| 1096 | static int vpif_streamon(struct file *file, void *priv, |
| 1097 | enum v4l2_buf_type buftype) |
| 1098 | { |
| 1099 | |
| 1100 | struct vpif_capture_config *config = vpif_dev->platform_data; |
| 1101 | struct vpif_fh *fh = priv; |
| 1102 | struct channel_obj *ch = fh->channel; |
| 1103 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 1104 | struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id]; |
| 1105 | struct vpif_params *vpif; |
| 1106 | unsigned long addr = 0; |
| 1107 | int ret = 0; |
| 1108 | |
| 1109 | vpif_dbg(2, debug, "vpif_streamon\n"); |
| 1110 | |
| 1111 | vpif = &ch->vpifparams; |
| 1112 | |
| 1113 | if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
| 1114 | vpif_dbg(1, debug, "buffer type not supported\n"); |
| 1115 | return -EINVAL; |
| 1116 | } |
| 1117 | |
| 1118 | /* If file handle is not allowed IO, return error */ |
| 1119 | if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { |
| 1120 | vpif_dbg(1, debug, "io not allowed\n"); |
| 1121 | return -EACCES; |
| 1122 | } |
| 1123 | |
| 1124 | /* If Streaming is already started, return error */ |
| 1125 | if (common->started) { |
| 1126 | vpif_dbg(1, debug, "channel->started\n"); |
| 1127 | return -EBUSY; |
| 1128 | } |
| 1129 | |
| 1130 | if ((ch->channel_id == VPIF_CHANNEL0_VIDEO && |
| 1131 | oth_ch->common[VPIF_VIDEO_INDEX].started && |
| 1132 | vpif->std_info.ycmux_mode == 0) || |
| 1133 | ((ch->channel_id == VPIF_CHANNEL1_VIDEO) && |
| 1134 | (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) { |
| 1135 | vpif_dbg(1, debug, "other channel is being used\n"); |
| 1136 | return -EBUSY; |
| 1137 | } |
| 1138 | |
| 1139 | ret = vpif_check_format(ch, &common->fmt.fmt.pix, 0); |
| 1140 | if (ret) |
| 1141 | return ret; |
| 1142 | |
| 1143 | /* Enable streamon on the sub device */ |
| 1144 | ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video, |
| 1145 | s_stream, 1); |
| 1146 | |
| 1147 | if (ret && (ret != -ENOIOCTLCMD)) { |
| 1148 | vpif_dbg(1, debug, "stream on failed in subdev\n"); |
| 1149 | return ret; |
| 1150 | } |
| 1151 | |
| 1152 | /* Call videobuf_streamon to start streaming in videobuf */ |
| 1153 | ret = videobuf_streamon(&common->buffer_queue); |
| 1154 | if (ret) { |
| 1155 | vpif_dbg(1, debug, "videobuf_streamon\n"); |
| 1156 | return ret; |
| 1157 | } |
| 1158 | |
| 1159 | if (mutex_lock_interruptible(&common->lock)) { |
| 1160 | ret = -ERESTARTSYS; |
| 1161 | goto streamoff_exit; |
| 1162 | } |
| 1163 | |
| 1164 | /* If buffer queue is empty, return error */ |
| 1165 | if (list_empty(&common->dma_queue)) { |
| 1166 | vpif_dbg(1, debug, "buffer queue is empty\n"); |
| 1167 | ret = -EIO; |
| 1168 | goto exit; |
| 1169 | } |
| 1170 | |
| 1171 | /* Get the next frame from the buffer queue */ |
| 1172 | common->cur_frm = list_entry(common->dma_queue.next, |
| 1173 | struct videobuf_buffer, queue); |
| 1174 | common->next_frm = common->cur_frm; |
| 1175 | |
| 1176 | /* Remove buffer from the buffer queue */ |
| 1177 | list_del(&common->cur_frm->queue); |
| 1178 | /* Mark state of the current frame to active */ |
| 1179 | common->cur_frm->state = VIDEOBUF_ACTIVE; |
| 1180 | /* Initialize field_id and started member */ |
| 1181 | ch->field_id = 0; |
| 1182 | common->started = 1; |
| 1183 | |
| 1184 | if (V4L2_MEMORY_USERPTR == common->memory) |
| 1185 | addr = common->cur_frm->boff; |
| 1186 | else |
| 1187 | addr = videobuf_to_dma_contig(common->cur_frm); |
| 1188 | |
| 1189 | /* Calculate the offset for Y and C data in the buffer */ |
| 1190 | vpif_calculate_offsets(ch); |
| 1191 | |
| 1192 | if ((vpif->std_info.frm_fmt && |
| 1193 | ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) && |
| 1194 | (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) || |
| 1195 | (!vpif->std_info.frm_fmt && |
| 1196 | (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) { |
| 1197 | vpif_dbg(1, debug, "conflict in field format and std format\n"); |
| 1198 | ret = -EINVAL; |
| 1199 | goto exit; |
| 1200 | } |
| 1201 | |
| 1202 | /* configure 1 or 2 channel mode */ |
| 1203 | ret = config->setup_input_channel_mode(vpif->std_info.ycmux_mode); |
| 1204 | |
| 1205 | if (ret < 0) { |
| 1206 | vpif_dbg(1, debug, "can't set vpif channel mode\n"); |
| 1207 | goto exit; |
| 1208 | } |
| 1209 | |
| 1210 | /* Call vpif_set_params function to set the parameters and addresses */ |
| 1211 | ret = vpif_set_video_params(vpif, ch->channel_id); |
| 1212 | |
| 1213 | if (ret < 0) { |
| 1214 | vpif_dbg(1, debug, "can't set video params\n"); |
| 1215 | goto exit; |
| 1216 | } |
| 1217 | |
| 1218 | common->started = ret; |
| 1219 | vpif_config_addr(ch, ret); |
| 1220 | |
| 1221 | common->set_addr(addr + common->ytop_off, |
| 1222 | addr + common->ybtm_off, |
| 1223 | addr + common->ctop_off, |
| 1224 | addr + common->cbtm_off); |
| 1225 | |
| 1226 | /** |
| 1227 | * Set interrupt for both the fields in VPIF Register enable channel in |
| 1228 | * VPIF register |
| 1229 | */ |
| 1230 | if ((VPIF_CHANNEL0_VIDEO == ch->channel_id)) { |
| 1231 | channel0_intr_assert(); |
| 1232 | channel0_intr_enable(1); |
| 1233 | enable_channel0(1); |
| 1234 | } |
| 1235 | if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) || |
| 1236 | (common->started == 2)) { |
| 1237 | channel1_intr_assert(); |
| 1238 | channel1_intr_enable(1); |
| 1239 | enable_channel1(1); |
| 1240 | } |
| 1241 | channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1; |
| 1242 | mutex_unlock(&common->lock); |
| 1243 | return ret; |
| 1244 | |
| 1245 | exit: |
| 1246 | mutex_unlock(&common->lock); |
| 1247 | streamoff_exit: |
| 1248 | ret = videobuf_streamoff(&common->buffer_queue); |
| 1249 | return ret; |
| 1250 | } |
| 1251 | |
| 1252 | /** |
| 1253 | * vpif_streamoff() - streamoff handler |
| 1254 | * @file: file ptr |
| 1255 | * @priv: file handle |
| 1256 | * @buftype: v4l2 buffer type |
| 1257 | */ |
| 1258 | static int vpif_streamoff(struct file *file, void *priv, |
| 1259 | enum v4l2_buf_type buftype) |
| 1260 | { |
| 1261 | |
| 1262 | struct vpif_fh *fh = priv; |
| 1263 | struct channel_obj *ch = fh->channel; |
| 1264 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 1265 | int ret; |
| 1266 | |
| 1267 | vpif_dbg(2, debug, "vpif_streamoff\n"); |
| 1268 | |
| 1269 | if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
| 1270 | vpif_dbg(1, debug, "buffer type not supported\n"); |
| 1271 | return -EINVAL; |
| 1272 | } |
| 1273 | |
| 1274 | /* If io is allowed for this file handle, return error */ |
| 1275 | if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { |
| 1276 | vpif_dbg(1, debug, "io not allowed\n"); |
| 1277 | return -EACCES; |
| 1278 | } |
| 1279 | |
| 1280 | /* If streaming is not started, return error */ |
| 1281 | if (!common->started) { |
| 1282 | vpif_dbg(1, debug, "channel->started\n"); |
| 1283 | return -EINVAL; |
| 1284 | } |
| 1285 | |
| 1286 | if (mutex_lock_interruptible(&common->lock)) |
| 1287 | return -ERESTARTSYS; |
| 1288 | |
| 1289 | /* disable channel */ |
| 1290 | if (VPIF_CHANNEL0_VIDEO == ch->channel_id) { |
| 1291 | enable_channel0(0); |
| 1292 | channel0_intr_enable(0); |
| 1293 | } else { |
| 1294 | enable_channel1(0); |
| 1295 | channel1_intr_enable(0); |
| 1296 | } |
| 1297 | |
| 1298 | common->started = 0; |
| 1299 | |
| 1300 | ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video, |
| 1301 | s_stream, 0); |
| 1302 | |
| 1303 | if (ret && (ret != -ENOIOCTLCMD)) |
| 1304 | vpif_dbg(1, debug, "stream off failed in subdev\n"); |
| 1305 | |
| 1306 | mutex_unlock(&common->lock); |
| 1307 | |
| 1308 | return videobuf_streamoff(&common->buffer_queue); |
| 1309 | } |
| 1310 | |
| 1311 | /** |
| 1312 | * vpif_map_sub_device_to_input() - Maps sub device to input |
| 1313 | * @ch - ptr to channel |
| 1314 | * @config - ptr to capture configuration |
| 1315 | * @input_index - Given input index from application |
| 1316 | * @sub_device_index - index into sd table |
| 1317 | * |
| 1318 | * lookup the sub device information for a given input index. |
| 1319 | * we report all the inputs to application. inputs table also |
| 1320 | * has sub device name for the each input |
| 1321 | */ |
| 1322 | static struct vpif_subdev_info *vpif_map_sub_device_to_input( |
| 1323 | struct channel_obj *ch, |
| 1324 | struct vpif_capture_config *vpif_cfg, |
| 1325 | int input_index, |
| 1326 | int *sub_device_index) |
| 1327 | { |
| 1328 | struct vpif_capture_chan_config *chan_cfg; |
| 1329 | struct vpif_subdev_info *subdev_info = NULL; |
| 1330 | const char *subdev_name = NULL; |
| 1331 | int i; |
| 1332 | |
| 1333 | vpif_dbg(2, debug, "vpif_map_sub_device_to_input\n"); |
| 1334 | |
| 1335 | chan_cfg = &vpif_cfg->chan_config[ch->channel_id]; |
| 1336 | |
| 1337 | /** |
| 1338 | * search through the inputs to find the sub device supporting |
| 1339 | * the input |
| 1340 | */ |
| 1341 | for (i = 0; i < chan_cfg->input_count; i++) { |
| 1342 | /* For each sub device, loop through input */ |
| 1343 | if (i == input_index) { |
| 1344 | subdev_name = chan_cfg->inputs[i].subdev_name; |
| 1345 | break; |
| 1346 | } |
| 1347 | } |
| 1348 | |
| 1349 | /* if reached maximum. return null */ |
| 1350 | if (i == chan_cfg->input_count || (NULL == subdev_name)) |
| 1351 | return subdev_info; |
| 1352 | |
| 1353 | /* loop through the sub device list to get the sub device info */ |
| 1354 | for (i = 0; i < vpif_cfg->subdev_count; i++) { |
| 1355 | subdev_info = &vpif_cfg->subdev_info[i]; |
| 1356 | if (!strcmp(subdev_info->name, subdev_name)) |
| 1357 | break; |
| 1358 | } |
| 1359 | |
| 1360 | if (i == vpif_cfg->subdev_count) |
| 1361 | return subdev_info; |
| 1362 | |
| 1363 | /* check if the sub device is registered */ |
| 1364 | if (NULL == vpif_obj.sd[i]) |
| 1365 | return NULL; |
| 1366 | |
| 1367 | *sub_device_index = i; |
| 1368 | return subdev_info; |
| 1369 | } |
| 1370 | |
| 1371 | /** |
| 1372 | * vpif_querystd() - querystd handler |
| 1373 | * @file: file ptr |
| 1374 | * @priv: file handle |
| 1375 | * @std_id: ptr to std id |
| 1376 | * |
| 1377 | * This function is called to detect standard at the selected input |
| 1378 | */ |
| 1379 | static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id) |
| 1380 | { |
| 1381 | struct vpif_fh *fh = priv; |
| 1382 | struct channel_obj *ch = fh->channel; |
| 1383 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 1384 | int ret = 0; |
| 1385 | |
| 1386 | vpif_dbg(2, debug, "vpif_querystd\n"); |
| 1387 | |
| 1388 | if (mutex_lock_interruptible(&common->lock)) |
| 1389 | return -ERESTARTSYS; |
| 1390 | |
| 1391 | /* Call querystd function of decoder device */ |
| 1392 | ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video, |
| 1393 | querystd, std_id); |
| 1394 | if (ret < 0) |
| 1395 | vpif_dbg(1, debug, "Failed to set standard for sub devices\n"); |
| 1396 | |
| 1397 | mutex_unlock(&common->lock); |
| 1398 | return ret; |
| 1399 | } |
| 1400 | |
| 1401 | /** |
| 1402 | * vpif_g_std() - get STD handler |
| 1403 | * @file: file ptr |
| 1404 | * @priv: file handle |
| 1405 | * @std_id: ptr to std id |
| 1406 | */ |
| 1407 | static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std) |
| 1408 | { |
| 1409 | struct vpif_fh *fh = priv; |
| 1410 | struct channel_obj *ch = fh->channel; |
| 1411 | |
| 1412 | vpif_dbg(2, debug, "vpif_g_std\n"); |
| 1413 | |
| 1414 | *std = ch->video.stdid; |
| 1415 | return 0; |
| 1416 | } |
| 1417 | |
| 1418 | /** |
| 1419 | * vpif_s_std() - set STD handler |
| 1420 | * @file: file ptr |
| 1421 | * @priv: file handle |
| 1422 | * @std_id: ptr to std id |
| 1423 | */ |
| 1424 | static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id) |
| 1425 | { |
| 1426 | struct vpif_fh *fh = priv; |
| 1427 | struct channel_obj *ch = fh->channel; |
| 1428 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 1429 | int ret = 0; |
| 1430 | |
| 1431 | vpif_dbg(2, debug, "vpif_s_std\n"); |
| 1432 | |
| 1433 | if (common->started) { |
| 1434 | vpif_err("streaming in progress\n"); |
| 1435 | return -EBUSY; |
| 1436 | } |
| 1437 | |
| 1438 | if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || |
| 1439 | (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { |
| 1440 | if (!fh->initialized) { |
| 1441 | vpif_dbg(1, debug, "Channel Busy\n"); |
| 1442 | return -EBUSY; |
| 1443 | } |
| 1444 | } |
| 1445 | |
| 1446 | ret = v4l2_prio_check(&ch->prio, &fh->prio); |
| 1447 | if (0 != ret) |
| 1448 | return ret; |
| 1449 | |
| 1450 | fh->initialized = 1; |
| 1451 | |
| 1452 | /* Call encoder subdevice function to set the standard */ |
| 1453 | if (mutex_lock_interruptible(&common->lock)) |
| 1454 | return -ERESTARTSYS; |
| 1455 | |
| 1456 | ch->video.stdid = *std_id; |
| 1457 | |
| 1458 | /* Get the information about the standard */ |
| 1459 | if (vpif_update_std_info(ch)) { |
| 1460 | ret = -EINVAL; |
| 1461 | vpif_err("Error getting the standard info\n"); |
| 1462 | goto s_std_exit; |
| 1463 | } |
| 1464 | |
| 1465 | /* Configure the default format information */ |
| 1466 | vpif_config_format(ch); |
| 1467 | |
| 1468 | /* set standard in the sub device */ |
| 1469 | ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core, |
| 1470 | s_std, *std_id); |
| 1471 | if (ret < 0) |
| 1472 | vpif_dbg(1, debug, "Failed to set standard for sub devices\n"); |
| 1473 | |
| 1474 | s_std_exit: |
| 1475 | mutex_unlock(&common->lock); |
| 1476 | return ret; |
| 1477 | } |
| 1478 | |
| 1479 | /** |
| 1480 | * vpif_enum_input() - ENUMINPUT handler |
| 1481 | * @file: file ptr |
| 1482 | * @priv: file handle |
| 1483 | * @input: ptr to input structure |
| 1484 | */ |
| 1485 | static int vpif_enum_input(struct file *file, void *priv, |
| 1486 | struct v4l2_input *input) |
| 1487 | { |
| 1488 | |
| 1489 | struct vpif_capture_config *config = vpif_dev->platform_data; |
| 1490 | struct vpif_capture_chan_config *chan_cfg; |
| 1491 | struct vpif_fh *fh = priv; |
| 1492 | struct channel_obj *ch = fh->channel; |
| 1493 | |
| 1494 | chan_cfg = &config->chan_config[ch->channel_id]; |
| 1495 | |
| 1496 | if (input->index >= chan_cfg->input_count) { |
| 1497 | vpif_dbg(1, debug, "Invalid input index\n"); |
| 1498 | return -EINVAL; |
| 1499 | } |
| 1500 | |
| 1501 | memcpy(input, &chan_cfg->inputs[input->index].input, |
| 1502 | sizeof(*input)); |
| 1503 | return 0; |
| 1504 | } |
| 1505 | |
| 1506 | /** |
| 1507 | * vpif_g_input() - Get INPUT handler |
| 1508 | * @file: file ptr |
| 1509 | * @priv: file handle |
| 1510 | * @index: ptr to input index |
| 1511 | */ |
| 1512 | static int vpif_g_input(struct file *file, void *priv, unsigned int *index) |
| 1513 | { |
| 1514 | struct vpif_fh *fh = priv; |
| 1515 | struct channel_obj *ch = fh->channel; |
| 1516 | struct video_obj *vid_ch = &ch->video; |
| 1517 | |
| 1518 | *index = vid_ch->input_idx; |
| 1519 | |
| 1520 | return 0; |
| 1521 | } |
| 1522 | |
| 1523 | /** |
| 1524 | * vpif_s_input() - Set INPUT handler |
| 1525 | * @file: file ptr |
| 1526 | * @priv: file handle |
| 1527 | * @index: input index |
| 1528 | */ |
| 1529 | static int vpif_s_input(struct file *file, void *priv, unsigned int index) |
| 1530 | { |
| 1531 | struct vpif_capture_config *config = vpif_dev->platform_data; |
| 1532 | struct vpif_capture_chan_config *chan_cfg; |
| 1533 | struct vpif_fh *fh = priv; |
| 1534 | struct channel_obj *ch = fh->channel; |
| 1535 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 1536 | struct video_obj *vid_ch = &ch->video; |
| 1537 | struct vpif_subdev_info *subdev_info; |
| 1538 | int ret = 0, sd_index = 0; |
| 1539 | u32 input = 0, output = 0; |
| 1540 | |
| 1541 | chan_cfg = &config->chan_config[ch->channel_id]; |
| 1542 | |
| 1543 | if (common->started) { |
| 1544 | vpif_err("Streaming in progress\n"); |
| 1545 | return -EBUSY; |
| 1546 | } |
| 1547 | |
| 1548 | if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || |
| 1549 | (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { |
| 1550 | if (!fh->initialized) { |
| 1551 | vpif_dbg(1, debug, "Channel Busy\n"); |
| 1552 | return -EBUSY; |
| 1553 | } |
| 1554 | } |
| 1555 | |
| 1556 | ret = v4l2_prio_check(&ch->prio, &fh->prio); |
| 1557 | if (0 != ret) |
| 1558 | return ret; |
| 1559 | |
| 1560 | fh->initialized = 1; |
| 1561 | subdev_info = vpif_map_sub_device_to_input(ch, config, index, |
| 1562 | &sd_index); |
| 1563 | if (NULL == subdev_info) { |
| 1564 | vpif_dbg(1, debug, |
| 1565 | "couldn't lookup sub device for the input index\n"); |
| 1566 | return -EINVAL; |
| 1567 | } |
| 1568 | |
| 1569 | if (mutex_lock_interruptible(&common->lock)) |
| 1570 | return -ERESTARTSYS; |
| 1571 | |
| 1572 | /* first setup input path from sub device to vpif */ |
| 1573 | if (config->setup_input_path) { |
| 1574 | ret = config->setup_input_path(ch->channel_id, |
| 1575 | subdev_info->name); |
| 1576 | if (ret < 0) { |
| 1577 | vpif_dbg(1, debug, "couldn't setup input path for the" |
| 1578 | " sub device %s, for input index %d\n", |
| 1579 | subdev_info->name, index); |
| 1580 | goto exit; |
| 1581 | } |
| 1582 | } |
| 1583 | |
| 1584 | if (subdev_info->can_route) { |
| 1585 | input = subdev_info->input; |
| 1586 | output = subdev_info->output; |
| 1587 | ret = v4l2_subdev_call(vpif_obj.sd[sd_index], video, s_routing, |
| 1588 | input, output, 0); |
| 1589 | if (ret < 0) { |
| 1590 | vpif_dbg(1, debug, "Failed to set input\n"); |
| 1591 | goto exit; |
| 1592 | } |
| 1593 | } |
| 1594 | vid_ch->input_idx = index; |
| 1595 | ch->curr_subdev_info = subdev_info; |
| 1596 | ch->curr_sd_index = sd_index; |
| 1597 | /* copy interface parameters to vpif */ |
| 1598 | ch->vpifparams.iface = subdev_info->vpif_if; |
| 1599 | |
| 1600 | /* update tvnorms from the sub device input info */ |
| 1601 | ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std; |
| 1602 | |
| 1603 | exit: |
| 1604 | mutex_unlock(&common->lock); |
| 1605 | return ret; |
| 1606 | } |
| 1607 | |
| 1608 | /** |
| 1609 | * vpif_enum_fmt_vid_cap() - ENUM_FMT handler |
| 1610 | * @file: file ptr |
| 1611 | * @priv: file handle |
| 1612 | * @index: input index |
| 1613 | */ |
| 1614 | static int vpif_enum_fmt_vid_cap(struct file *file, void *priv, |
| 1615 | struct v4l2_fmtdesc *fmt) |
| 1616 | { |
| 1617 | struct vpif_fh *fh = priv; |
| 1618 | struct channel_obj *ch = fh->channel; |
| 1619 | |
| 1620 | if (fmt->index != 0) { |
| 1621 | vpif_dbg(1, debug, "Invalid format index\n"); |
| 1622 | return -EINVAL; |
| 1623 | } |
| 1624 | |
| 1625 | /* Fill in the information about format */ |
| 1626 | if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) { |
| 1627 | fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1628 | strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb"); |
| 1629 | fmt->pixelformat = V4L2_PIX_FMT_SBGGR8; |
| 1630 | } else { |
| 1631 | fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1632 | strcpy(fmt->description, "YCbCr4:2:2 YC Planar"); |
| 1633 | fmt->pixelformat = V4L2_PIX_FMT_YUV422P; |
| 1634 | } |
| 1635 | return 0; |
| 1636 | } |
| 1637 | |
| 1638 | /** |
| 1639 | * vpif_try_fmt_vid_cap() - TRY_FMT handler |
| 1640 | * @file: file ptr |
| 1641 | * @priv: file handle |
| 1642 | * @fmt: ptr to v4l2 format structure |
| 1643 | */ |
| 1644 | static int vpif_try_fmt_vid_cap(struct file *file, void *priv, |
| 1645 | struct v4l2_format *fmt) |
| 1646 | { |
| 1647 | struct vpif_fh *fh = priv; |
| 1648 | struct channel_obj *ch = fh->channel; |
| 1649 | struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; |
| 1650 | |
| 1651 | return vpif_check_format(ch, pixfmt, 1); |
| 1652 | } |
| 1653 | |
| 1654 | |
| 1655 | /** |
| 1656 | * vpif_g_fmt_vid_cap() - Set INPUT handler |
| 1657 | * @file: file ptr |
| 1658 | * @priv: file handle |
| 1659 | * @fmt: ptr to v4l2 format structure |
| 1660 | */ |
| 1661 | static int vpif_g_fmt_vid_cap(struct file *file, void *priv, |
| 1662 | struct v4l2_format *fmt) |
| 1663 | { |
| 1664 | struct vpif_fh *fh = priv; |
| 1665 | struct channel_obj *ch = fh->channel; |
| 1666 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 1667 | |
| 1668 | /* Check the validity of the buffer type */ |
| 1669 | if (common->fmt.type != fmt->type) |
| 1670 | return -EINVAL; |
| 1671 | |
| 1672 | /* Fill in the information about format */ |
| 1673 | if (mutex_lock_interruptible(&common->lock)) |
| 1674 | return -ERESTARTSYS; |
| 1675 | |
| 1676 | *fmt = common->fmt; |
| 1677 | mutex_unlock(&common->lock); |
| 1678 | return 0; |
| 1679 | } |
| 1680 | |
| 1681 | /** |
| 1682 | * vpif_s_fmt_vid_cap() - Set FMT handler |
| 1683 | * @file: file ptr |
| 1684 | * @priv: file handle |
| 1685 | * @fmt: ptr to v4l2 format structure |
| 1686 | */ |
| 1687 | static int vpif_s_fmt_vid_cap(struct file *file, void *priv, |
| 1688 | struct v4l2_format *fmt) |
| 1689 | { |
| 1690 | struct vpif_fh *fh = priv; |
| 1691 | struct channel_obj *ch = fh->channel; |
| 1692 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 1693 | struct v4l2_pix_format *pixfmt; |
| 1694 | int ret = 0; |
| 1695 | |
| 1696 | vpif_dbg(2, debug, "VIDIOC_S_FMT\n"); |
| 1697 | |
| 1698 | /* If streaming is started, return error */ |
| 1699 | if (common->started) { |
| 1700 | vpif_dbg(1, debug, "Streaming is started\n"); |
| 1701 | return -EBUSY; |
| 1702 | } |
| 1703 | |
| 1704 | if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || |
| 1705 | (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { |
| 1706 | if (!fh->initialized) { |
| 1707 | vpif_dbg(1, debug, "Channel Busy\n"); |
| 1708 | return -EBUSY; |
| 1709 | } |
| 1710 | } |
| 1711 | |
| 1712 | ret = v4l2_prio_check(&ch->prio, &fh->prio); |
| 1713 | if (0 != ret) |
| 1714 | return ret; |
| 1715 | |
| 1716 | fh->initialized = 1; |
| 1717 | |
| 1718 | pixfmt = &fmt->fmt.pix; |
| 1719 | /* Check for valid field format */ |
| 1720 | ret = vpif_check_format(ch, pixfmt, 0); |
| 1721 | |
| 1722 | if (ret) |
| 1723 | return ret; |
| 1724 | /* store the format in the channel object */ |
| 1725 | if (mutex_lock_interruptible(&common->lock)) |
| 1726 | return -ERESTARTSYS; |
| 1727 | |
| 1728 | common->fmt = *fmt; |
| 1729 | mutex_unlock(&common->lock); |
| 1730 | |
| 1731 | return 0; |
| 1732 | } |
| 1733 | |
| 1734 | /** |
| 1735 | * vpif_querycap() - QUERYCAP handler |
| 1736 | * @file: file ptr |
| 1737 | * @priv: file handle |
| 1738 | * @cap: ptr to v4l2_capability structure |
| 1739 | */ |
| 1740 | static int vpif_querycap(struct file *file, void *priv, |
| 1741 | struct v4l2_capability *cap) |
| 1742 | { |
| 1743 | struct vpif_capture_config *config = vpif_dev->platform_data; |
| 1744 | |
| 1745 | cap->version = VPIF_CAPTURE_VERSION_CODE; |
| 1746 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 1747 | strlcpy(cap->driver, "vpif capture", sizeof(cap->driver)); |
| 1748 | strlcpy(cap->bus_info, "DM646x Platform", sizeof(cap->bus_info)); |
| 1749 | strlcpy(cap->card, config->card_name, sizeof(cap->card)); |
| 1750 | |
| 1751 | return 0; |
| 1752 | } |
| 1753 | |
| 1754 | /** |
| 1755 | * vpif_g_priority() - get priority handler |
| 1756 | * @file: file ptr |
| 1757 | * @priv: file handle |
| 1758 | * @prio: ptr to v4l2_priority structure |
| 1759 | */ |
| 1760 | static int vpif_g_priority(struct file *file, void *priv, |
| 1761 | enum v4l2_priority *prio) |
| 1762 | { |
| 1763 | struct vpif_fh *fh = priv; |
| 1764 | struct channel_obj *ch = fh->channel; |
| 1765 | |
| 1766 | *prio = v4l2_prio_max(&ch->prio); |
| 1767 | |
| 1768 | return 0; |
| 1769 | } |
| 1770 | |
| 1771 | /** |
| 1772 | * vpif_s_priority() - set priority handler |
| 1773 | * @file: file ptr |
| 1774 | * @priv: file handle |
| 1775 | * @prio: ptr to v4l2_priority structure |
| 1776 | */ |
| 1777 | static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p) |
| 1778 | { |
| 1779 | struct vpif_fh *fh = priv; |
| 1780 | struct channel_obj *ch = fh->channel; |
| 1781 | |
| 1782 | return v4l2_prio_change(&ch->prio, &fh->prio, p); |
| 1783 | } |
| 1784 | |
| 1785 | /** |
| 1786 | * vpif_cropcap() - cropcap handler |
| 1787 | * @file: file ptr |
| 1788 | * @priv: file handle |
| 1789 | * @crop: ptr to v4l2_cropcap structure |
| 1790 | */ |
| 1791 | static int vpif_cropcap(struct file *file, void *priv, |
| 1792 | struct v4l2_cropcap *crop) |
| 1793 | { |
| 1794 | struct vpif_fh *fh = priv; |
| 1795 | struct channel_obj *ch = fh->channel; |
| 1796 | struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| 1797 | |
| 1798 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != crop->type) |
| 1799 | return -EINVAL; |
| 1800 | |
| 1801 | crop->bounds.left = 0; |
| 1802 | crop->bounds.top = 0; |
| 1803 | crop->bounds.height = common->height; |
| 1804 | crop->bounds.width = common->width; |
| 1805 | crop->defrect = crop->bounds; |
| 1806 | return 0; |
| 1807 | } |
| 1808 | |
| 1809 | /* vpif capture ioctl operations */ |
| 1810 | static const struct v4l2_ioctl_ops vpif_ioctl_ops = { |
| 1811 | .vidioc_querycap = vpif_querycap, |
| 1812 | .vidioc_g_priority = vpif_g_priority, |
| 1813 | .vidioc_s_priority = vpif_s_priority, |
| 1814 | .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap, |
| 1815 | .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap, |
| 1816 | .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap, |
| 1817 | .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap, |
| 1818 | .vidioc_enum_input = vpif_enum_input, |
| 1819 | .vidioc_s_input = vpif_s_input, |
| 1820 | .vidioc_g_input = vpif_g_input, |
| 1821 | .vidioc_reqbufs = vpif_reqbufs, |
| 1822 | .vidioc_querybuf = vpif_querybuf, |
| 1823 | .vidioc_querystd = vpif_querystd, |
| 1824 | .vidioc_s_std = vpif_s_std, |
| 1825 | .vidioc_g_std = vpif_g_std, |
| 1826 | .vidioc_qbuf = vpif_qbuf, |
| 1827 | .vidioc_dqbuf = vpif_dqbuf, |
| 1828 | .vidioc_streamon = vpif_streamon, |
| 1829 | .vidioc_streamoff = vpif_streamoff, |
| 1830 | .vidioc_cropcap = vpif_cropcap, |
| 1831 | }; |
| 1832 | |
| 1833 | /* vpif file operations */ |
| 1834 | static struct v4l2_file_operations vpif_fops = { |
| 1835 | .owner = THIS_MODULE, |
| 1836 | .open = vpif_open, |
| 1837 | .release = vpif_release, |
| 1838 | .ioctl = video_ioctl2, |
| 1839 | .mmap = vpif_mmap, |
| 1840 | .poll = vpif_poll |
| 1841 | }; |
| 1842 | |
| 1843 | /* vpif video template */ |
| 1844 | static struct video_device vpif_video_template = { |
| 1845 | .name = "vpif", |
| 1846 | .fops = &vpif_fops, |
| 1847 | .minor = -1, |
| 1848 | .ioctl_ops = &vpif_ioctl_ops, |
| 1849 | }; |
| 1850 | |
| 1851 | /** |
| 1852 | * initialize_vpif() - Initialize vpif data structures |
| 1853 | * |
| 1854 | * Allocate memory for data structures and initialize them |
| 1855 | */ |
| 1856 | static int initialize_vpif(void) |
| 1857 | { |
| 1858 | int err = 0, i, j; |
| 1859 | int free_channel_objects_index; |
| 1860 | |
| 1861 | /* Default number of buffers should be 3 */ |
| 1862 | if ((ch0_numbuffers > 0) && |
| 1863 | (ch0_numbuffers < config_params.min_numbuffers)) |
| 1864 | ch0_numbuffers = config_params.min_numbuffers; |
| 1865 | if ((ch1_numbuffers > 0) && |
| 1866 | (ch1_numbuffers < config_params.min_numbuffers)) |
| 1867 | ch1_numbuffers = config_params.min_numbuffers; |
| 1868 | |
| 1869 | /* Set buffer size to min buffers size if it is invalid */ |
| 1870 | if (ch0_bufsize < config_params.min_bufsize[VPIF_CHANNEL0_VIDEO]) |
| 1871 | ch0_bufsize = |
| 1872 | config_params.min_bufsize[VPIF_CHANNEL0_VIDEO]; |
| 1873 | if (ch1_bufsize < config_params.min_bufsize[VPIF_CHANNEL1_VIDEO]) |
| 1874 | ch1_bufsize = |
| 1875 | config_params.min_bufsize[VPIF_CHANNEL1_VIDEO]; |
| 1876 | |
| 1877 | config_params.numbuffers[VPIF_CHANNEL0_VIDEO] = ch0_numbuffers; |
| 1878 | config_params.numbuffers[VPIF_CHANNEL1_VIDEO] = ch1_numbuffers; |
| 1879 | if (ch0_numbuffers) { |
| 1880 | config_params.channel_bufsize[VPIF_CHANNEL0_VIDEO] |
| 1881 | = ch0_bufsize; |
| 1882 | } |
| 1883 | if (ch1_numbuffers) { |
| 1884 | config_params.channel_bufsize[VPIF_CHANNEL1_VIDEO] |
| 1885 | = ch1_bufsize; |
| 1886 | } |
| 1887 | |
| 1888 | /* Allocate memory for six channel objects */ |
| 1889 | for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { |
| 1890 | vpif_obj.dev[i] = |
| 1891 | kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL); |
| 1892 | /* If memory allocation fails, return error */ |
| 1893 | if (!vpif_obj.dev[i]) { |
| 1894 | free_channel_objects_index = i; |
| 1895 | err = -ENOMEM; |
| 1896 | goto vpif_init_free_channel_objects; |
| 1897 | } |
| 1898 | } |
| 1899 | return 0; |
| 1900 | |
| 1901 | vpif_init_free_channel_objects: |
| 1902 | for (j = 0; j < free_channel_objects_index; j++) |
| 1903 | kfree(vpif_obj.dev[j]); |
| 1904 | return err; |
| 1905 | } |
| 1906 | |
| 1907 | /** |
| 1908 | * vpif_probe : This function probes the vpif capture driver |
| 1909 | * @pdev: platform device pointer |
| 1910 | * |
| 1911 | * This creates device entries by register itself to the V4L2 driver and |
| 1912 | * initializes fields of each channel objects |
| 1913 | */ |
| 1914 | static __init int vpif_probe(struct platform_device *pdev) |
| 1915 | { |
| 1916 | struct vpif_subdev_info *subdevdata; |
| 1917 | struct vpif_capture_config *config; |
| 1918 | int i, j, k, m, q, err; |
| 1919 | struct i2c_adapter *i2c_adap; |
| 1920 | struct channel_obj *ch; |
| 1921 | struct common_obj *common; |
| 1922 | struct video_device *vfd; |
| 1923 | struct resource *res; |
| 1924 | int subdev_count; |
| 1925 | |
| 1926 | vpif_dev = &pdev->dev; |
| 1927 | |
| 1928 | err = initialize_vpif(); |
| 1929 | if (err) { |
| 1930 | v4l2_err(vpif_dev->driver, "Error initializing vpif\n"); |
| 1931 | return err; |
| 1932 | } |
| 1933 | |
| 1934 | k = 0; |
| 1935 | while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) { |
| 1936 | for (i = res->start; i <= res->end; i++) { |
| 1937 | if (request_irq(i, vpif_channel_isr, IRQF_DISABLED, |
| 1938 | "DM646x_Capture", |
| 1939 | (void *)(&vpif_obj.dev[k]->channel_id))) { |
| 1940 | err = -EBUSY; |
| 1941 | i--; |
| 1942 | goto vpif_int_err; |
| 1943 | } |
| 1944 | } |
| 1945 | k++; |
| 1946 | } |
| 1947 | |
| 1948 | for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { |
| 1949 | /* Get the pointer to the channel object */ |
| 1950 | ch = vpif_obj.dev[i]; |
| 1951 | /* Allocate memory for video device */ |
| 1952 | vfd = video_device_alloc(); |
| 1953 | if (NULL == vfd) { |
| 1954 | for (j = 0; j < i; j++) { |
| 1955 | ch = vpif_obj.dev[j]; |
| 1956 | video_device_release(ch->video_dev); |
| 1957 | } |
| 1958 | err = -ENOMEM; |
| 1959 | goto vpif_dev_alloc_err; |
| 1960 | } |
| 1961 | |
| 1962 | /* Initialize field of video device */ |
| 1963 | *vfd = vpif_video_template; |
| 1964 | vfd->v4l2_dev = &vpif_obj.v4l2_dev; |
| 1965 | vfd->release = video_device_release; |
| 1966 | snprintf(vfd->name, sizeof(vfd->name), |
| 1967 | "DM646x_VPIFCapture_DRIVER_V%d.%d.%d", |
| 1968 | (VPIF_CAPTURE_VERSION_CODE >> 16) & 0xff, |
| 1969 | (VPIF_CAPTURE_VERSION_CODE >> 8) & 0xff, |
| 1970 | (VPIF_CAPTURE_VERSION_CODE) & 0xff); |
| 1971 | /* Set video_dev to the video device */ |
| 1972 | ch->video_dev = vfd; |
| 1973 | } |
| 1974 | |
| 1975 | for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) { |
| 1976 | ch = vpif_obj.dev[j]; |
| 1977 | ch->channel_id = j; |
| 1978 | common = &(ch->common[VPIF_VIDEO_INDEX]); |
| 1979 | spin_lock_init(&common->irqlock); |
| 1980 | mutex_init(&common->lock); |
| 1981 | /* Initialize prio member of channel object */ |
| 1982 | v4l2_prio_init(&ch->prio); |
| 1983 | err = video_register_device(ch->video_dev, |
| 1984 | VFL_TYPE_GRABBER, (j ? 1 : 0)); |
| 1985 | if (err) |
| 1986 | goto probe_out; |
| 1987 | |
| 1988 | video_set_drvdata(ch->video_dev, ch); |
| 1989 | |
| 1990 | } |
| 1991 | |
| 1992 | i2c_adap = i2c_get_adapter(1); |
| 1993 | config = pdev->dev.platform_data; |
| 1994 | |
| 1995 | subdev_count = config->subdev_count; |
| 1996 | vpif_obj.sd = kmalloc(sizeof(struct v4l2_subdev *) * subdev_count, |
| 1997 | GFP_KERNEL); |
| 1998 | if (vpif_obj.sd == NULL) { |
| 1999 | vpif_err("unable to allocate memory for subdevice pointers\n"); |
| 2000 | err = -ENOMEM; |
| 2001 | goto probe_out; |
| 2002 | } |
| 2003 | |
| 2004 | err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev); |
| 2005 | if (err) { |
| 2006 | v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n"); |
| 2007 | goto probe_subdev_out; |
| 2008 | } |
| 2009 | |
| 2010 | for (i = 0; i < subdev_count; i++) { |
| 2011 | subdevdata = &config->subdev_info[i]; |
| 2012 | vpif_obj.sd[i] = |
| 2013 | v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, |
| 2014 | i2c_adap, |
| 2015 | subdevdata->name, |
| 2016 | &subdevdata->board_info, |
| 2017 | NULL); |
| 2018 | |
| 2019 | if (!vpif_obj.sd[i]) { |
| 2020 | vpif_err("Error registering v4l2 subdevice\n"); |
| 2021 | goto probe_subdev_out; |
| 2022 | } |
| 2023 | v4l2_info(&vpif_obj.v4l2_dev, "registered sub device %s\n", |
| 2024 | subdevdata->name); |
| 2025 | |
| 2026 | if (vpif_obj.sd[i]) |
| 2027 | vpif_obj.sd[i]->grp_id = 1 << i; |
| 2028 | } |
| 2029 | v4l2_info(&vpif_obj.v4l2_dev, "DM646x VPIF Capture driver" |
| 2030 | " initialized\n"); |
| 2031 | |
| 2032 | return 0; |
| 2033 | |
| 2034 | probe_subdev_out: |
| 2035 | /* free sub devices memory */ |
| 2036 | kfree(vpif_obj.sd); |
| 2037 | |
| 2038 | j = VPIF_CAPTURE_MAX_DEVICES; |
| 2039 | probe_out: |
| 2040 | v4l2_device_unregister(&vpif_obj.v4l2_dev); |
| 2041 | for (k = 0; k < j; k++) { |
| 2042 | /* Get the pointer to the channel object */ |
| 2043 | ch = vpif_obj.dev[k]; |
| 2044 | /* Unregister video device */ |
| 2045 | video_unregister_device(ch->video_dev); |
| 2046 | } |
| 2047 | |
| 2048 | vpif_dev_alloc_err: |
| 2049 | k = VPIF_CAPTURE_MAX_DEVICES-1; |
| 2050 | res = platform_get_resource(pdev, IORESOURCE_IRQ, k); |
| 2051 | i = res->end; |
| 2052 | |
| 2053 | vpif_int_err: |
| 2054 | for (q = k; q >= 0; q--) { |
| 2055 | for (m = i; m >= (int)res->start; m--) |
| 2056 | free_irq(m, (void *)(&vpif_obj.dev[q]->channel_id)); |
| 2057 | |
| 2058 | res = platform_get_resource(pdev, IORESOURCE_IRQ, q-1); |
| 2059 | if (res) |
| 2060 | i = res->end; |
| 2061 | } |
| 2062 | return err; |
| 2063 | } |
| 2064 | |
| 2065 | /** |
| 2066 | * vpif_remove() - driver remove handler |
| 2067 | * @device: ptr to platform device structure |
| 2068 | * |
| 2069 | * The vidoe device is unregistered |
| 2070 | */ |
| 2071 | static int vpif_remove(struct platform_device *device) |
| 2072 | { |
| 2073 | int i; |
| 2074 | struct channel_obj *ch; |
| 2075 | |
| 2076 | v4l2_device_unregister(&vpif_obj.v4l2_dev); |
| 2077 | |
| 2078 | /* un-register device */ |
| 2079 | for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { |
| 2080 | /* Get the pointer to the channel object */ |
| 2081 | ch = vpif_obj.dev[i]; |
| 2082 | /* Unregister video device */ |
| 2083 | video_unregister_device(ch->video_dev); |
| 2084 | } |
| 2085 | return 0; |
| 2086 | } |
| 2087 | |
| 2088 | /** |
| 2089 | * vpif_suspend: vpif device suspend |
| 2090 | * |
| 2091 | * TODO: Add suspend code here |
| 2092 | */ |
| 2093 | static int |
| 2094 | vpif_suspend(struct device *dev) |
| 2095 | { |
| 2096 | return -1; |
| 2097 | } |
| 2098 | |
| 2099 | /** |
| 2100 | * vpif_resume: vpif device suspend |
| 2101 | * |
| 2102 | * TODO: Add resume code here |
| 2103 | */ |
| 2104 | static int |
| 2105 | vpif_resume(struct device *dev) |
| 2106 | { |
| 2107 | return -1; |
| 2108 | } |
| 2109 | |
| 2110 | static struct dev_pm_ops vpif_dev_pm_ops = { |
| 2111 | .suspend = vpif_suspend, |
| 2112 | .resume = vpif_resume, |
| 2113 | }; |
| 2114 | |
| 2115 | static struct platform_driver vpif_driver = { |
| 2116 | .driver = { |
| 2117 | .name = "vpif_capture", |
| 2118 | .owner = THIS_MODULE, |
| 2119 | .pm = &vpif_dev_pm_ops, |
| 2120 | }, |
| 2121 | .probe = vpif_probe, |
| 2122 | .remove = vpif_remove, |
| 2123 | }; |
| 2124 | |
| 2125 | /** |
| 2126 | * vpif_init: initialize the vpif driver |
| 2127 | * |
| 2128 | * This function registers device and driver to the kernel, requests irq |
| 2129 | * handler and allocates memory |
| 2130 | * for channel objects |
| 2131 | */ |
| 2132 | static __init int vpif_init(void) |
| 2133 | { |
| 2134 | return platform_driver_register(&vpif_driver); |
| 2135 | } |
| 2136 | |
| 2137 | /** |
| 2138 | * vpif_cleanup : This function clean up the vpif capture resources |
| 2139 | * |
| 2140 | * This will un-registers device and driver to the kernel, frees |
| 2141 | * requested irq handler and de-allocates memory allocated for channel |
| 2142 | * objects. |
| 2143 | */ |
| 2144 | static void vpif_cleanup(void) |
| 2145 | { |
| 2146 | struct platform_device *pdev; |
| 2147 | struct resource *res; |
| 2148 | int irq_num; |
| 2149 | int i = 0; |
| 2150 | |
| 2151 | pdev = container_of(vpif_dev, struct platform_device, dev); |
| 2152 | while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) { |
| 2153 | for (irq_num = res->start; irq_num <= res->end; irq_num++) |
| 2154 | free_irq(irq_num, |
| 2155 | (void *)(&vpif_obj.dev[i]->channel_id)); |
| 2156 | i++; |
| 2157 | } |
| 2158 | |
| 2159 | platform_driver_unregister(&vpif_driver); |
| 2160 | |
| 2161 | kfree(vpif_obj.sd); |
| 2162 | for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) |
| 2163 | kfree(vpif_obj.dev[i]); |
| 2164 | } |
| 2165 | |
| 2166 | /* Function for module initialization and cleanup */ |
| 2167 | module_init(vpif_init); |
| 2168 | module_exit(vpif_cleanup); |