1/* 2 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation version 2. 7 * 8 * This program is distributed WITHOUT ANY WARRANTY of any 9 * kind, whether express or implied; without even the implied warranty 10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 */ 13#include <linux/kernel.h> 14#include <linux/init.h> 15#include <linux/module.h> 16#include <linux/errno.h> 17#include <linux/interrupt.h> 18#include <linux/string.h> 19#include <linux/wait.h> 20#include <linux/time.h> 21#include <linux/platform_device.h> 22#include <linux/irq.h> 23#include <linux/mm.h> 24#include <linux/mutex.h> 25#include <linux/videodev2.h> 26#include <linux/slab.h> 27 28#include <asm/pgtable.h> 29#include <mach/cputype.h> 30 31#include <media/v4l2-dev.h> 32#include <media/v4l2-common.h> 33#include <media/v4l2-ioctl.h> 34#include <media/v4l2-device.h> 35#include <media/davinci/vpbe_display.h> 36#include <media/davinci/vpbe_types.h> 37#include <media/davinci/vpbe.h> 38#include <media/davinci/vpbe_venc.h> 39#include <media/davinci/vpbe_osd.h> 40#include "vpbe_venc_regs.h" 41 42#define VPBE_DISPLAY_DRIVER "vpbe-v4l2" 43 44static int debug; 45 46#define VPBE_DEFAULT_NUM_BUFS 3 47 48module_param(debug, int, 0644); 49 50static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev, 51 struct vpbe_layer *layer); 52 53static int venc_is_second_field(struct vpbe_display *disp_dev) 54{ 55 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 56 int ret; 57 int val; 58 59 ret = v4l2_subdev_call(vpbe_dev->venc, 60 core, 61 ioctl, 62 VENC_GET_FLD, 63 &val); 64 if (ret < 0) { 65 v4l2_err(&vpbe_dev->v4l2_dev, 66 "Error in getting Field ID 0\n"); 67 } 68 return val; 69} 70 71static void vpbe_isr_even_field(struct vpbe_display *disp_obj, 72 struct vpbe_layer *layer) 73{ 74 struct timespec timevalue; 75 76 if (layer->cur_frm == layer->next_frm) 77 return; 78 ktime_get_ts(&timevalue); 79 layer->cur_frm->vb.v4l2_buf.timestamp.tv_sec = 80 timevalue.tv_sec; 81 layer->cur_frm->vb.v4l2_buf.timestamp.tv_usec = 82 timevalue.tv_nsec / NSEC_PER_USEC; 83 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_DONE); 84 /* Make cur_frm pointing to next_frm */ 85 layer->cur_frm = layer->next_frm; 86} 87 88static void vpbe_isr_odd_field(struct vpbe_display *disp_obj, 89 struct vpbe_layer *layer) 90{ 91 struct osd_state *osd_device = disp_obj->osd_device; 92 unsigned long addr; 93 94 spin_lock(&disp_obj->dma_queue_lock); 95 if (list_empty(&layer->dma_queue) || 96 (layer->cur_frm != layer->next_frm)) { 97 spin_unlock(&disp_obj->dma_queue_lock); 98 return; 99 } 100 /* 101 * one field is displayed configure 102 * the next frame if it is available 103 * otherwise hold on current frame 104 * Get next from the buffer queue 105 */ 106 layer->next_frm = list_entry(layer->dma_queue.next, 107 struct vpbe_disp_buffer, list); 108 /* Remove that from the buffer queue */ 109 list_del(&layer->next_frm->list); 110 spin_unlock(&disp_obj->dma_queue_lock); 111 /* Mark state of the frame to active */ 112 layer->next_frm->vb.state = VB2_BUF_STATE_ACTIVE; 113 addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb, 0); 114 osd_device->ops.start_layer(osd_device, 115 layer->layer_info.id, 116 addr, 117 disp_obj->cbcr_ofst); 118} 119 120/* interrupt service routine */ 121static irqreturn_t venc_isr(int irq, void *arg) 122{ 123 struct vpbe_display *disp_dev = (struct vpbe_display *)arg; 124 struct vpbe_layer *layer; 125 static unsigned last_event; 126 unsigned event = 0; 127 int fid; 128 int i; 129 130 if ((NULL == arg) || (NULL == disp_dev->dev[0])) 131 return IRQ_HANDLED; 132 133 if (venc_is_second_field(disp_dev)) 134 event |= VENC_SECOND_FIELD; 135 else 136 event |= VENC_FIRST_FIELD; 137 138 if (event == (last_event & ~VENC_END_OF_FRAME)) { 139 /* 140 * If the display is non-interlaced, then we need to flag the 141 * end-of-frame event at every interrupt regardless of the 142 * value of the FIDST bit. We can conclude that the display is 143 * non-interlaced if the value of the FIDST bit is unchanged 144 * from the previous interrupt. 145 */ 146 event |= VENC_END_OF_FRAME; 147 } else if (event == VENC_SECOND_FIELD) { 148 /* end-of-frame for interlaced display */ 149 event |= VENC_END_OF_FRAME; 150 } 151 last_event = event; 152 153 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { 154 layer = disp_dev->dev[i]; 155 156 if (!vb2_start_streaming_called(&layer->buffer_queue)) 157 continue; 158 159 if (layer->layer_first_int) { 160 layer->layer_first_int = 0; 161 continue; 162 } 163 /* Check the field format */ 164 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) && 165 (event & VENC_END_OF_FRAME)) { 166 /* Progressive mode */ 167 168 vpbe_isr_even_field(disp_dev, layer); 169 vpbe_isr_odd_field(disp_dev, layer); 170 } else { 171 /* Interlaced mode */ 172 173 layer->field_id ^= 1; 174 if (event & VENC_FIRST_FIELD) 175 fid = 0; 176 else 177 fid = 1; 178 179 /* 180 * If field id does not match with store 181 * field id 182 */ 183 if (fid != layer->field_id) { 184 /* Make them in sync */ 185 layer->field_id = fid; 186 continue; 187 } 188 /* 189 * device field id and local field id are 190 * in sync. If this is even field 191 */ 192 if (0 == fid) 193 vpbe_isr_even_field(disp_dev, layer); 194 else /* odd field */ 195 vpbe_isr_odd_field(disp_dev, layer); 196 } 197 } 198 199 return IRQ_HANDLED; 200} 201 202/* 203 * vpbe_buffer_prepare() 204 * This is the callback function called from vb2_qbuf() function 205 * the buffer is prepared and user space virtual address is converted into 206 * physical address 207 */ 208static int vpbe_buffer_prepare(struct vb2_buffer *vb) 209{ 210 struct vb2_queue *q = vb->vb2_queue; 211 struct vpbe_layer *layer = vb2_get_drv_priv(q); 212 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 213 unsigned long addr; 214 215 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 216 "vpbe_buffer_prepare\n"); 217 218 vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage); 219 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) 220 return -EINVAL; 221 222 addr = vb2_dma_contig_plane_dma_addr(vb, 0); 223 if (!IS_ALIGNED(addr, 8)) { 224 v4l2_err(&vpbe_dev->v4l2_dev, 225 "buffer_prepare:offset is not aligned to 32 bytes\n"); 226 return -EINVAL; 227 } 228 return 0; 229} 230 231/* 232 * vpbe_buffer_setup() 233 * This function allocates memory for the buffers 234 */ 235static int 236vpbe_buffer_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, 237 unsigned int *nbuffers, unsigned int *nplanes, 238 unsigned int sizes[], void *alloc_ctxs[]) 239 240{ 241 /* Get the file handle object and layer object */ 242 struct vpbe_layer *layer = vb2_get_drv_priv(vq); 243 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 244 245 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n"); 246 247 if (fmt && fmt->fmt.pix.sizeimage < layer->pix_fmt.sizeimage) 248 return -EINVAL; 249 250 /* Store number of buffers allocated in numbuffer member */ 251 if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS) 252 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers; 253 254 *nplanes = 1; 255 sizes[0] = fmt ? fmt->fmt.pix.sizeimage : layer->pix_fmt.sizeimage; 256 alloc_ctxs[0] = layer->alloc_ctx; 257 258 return 0; 259} 260 261/* 262 * vpbe_buffer_queue() 263 * This function adds the buffer to DMA queue 264 */ 265static void vpbe_buffer_queue(struct vb2_buffer *vb) 266{ 267 /* Get the file handle object and layer object */ 268 struct vpbe_disp_buffer *buf = container_of(vb, 269 struct vpbe_disp_buffer, vb); 270 struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue); 271 struct vpbe_display *disp = layer->disp_dev; 272 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 273 unsigned long flags; 274 275 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 276 "vpbe_buffer_queue\n"); 277 278 /* add the buffer to the DMA queue */ 279 spin_lock_irqsave(&disp->dma_queue_lock, flags); 280 list_add_tail(&buf->list, &layer->dma_queue); 281 spin_unlock_irqrestore(&disp->dma_queue_lock, flags); 282} 283 284static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count) 285{ 286 struct vpbe_layer *layer = vb2_get_drv_priv(vq); 287 struct osd_state *osd_device = layer->disp_dev->osd_device; 288 int ret; 289 290 osd_device->ops.disable_layer(osd_device, layer->layer_info.id); 291 292 /* Get the next frame from the buffer queue */ 293 layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next, 294 struct vpbe_disp_buffer, list); 295 /* Remove buffer from the buffer queue */ 296 list_del(&layer->cur_frm->list); 297 /* Mark state of the current frame to active */ 298 layer->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE; 299 /* Initialize field_id and started member */ 300 layer->field_id = 0; 301 302 /* Set parameters in OSD and VENC */ 303 ret = vpbe_set_osd_display_params(layer->disp_dev, layer); 304 if (ret < 0) { 305 struct vpbe_disp_buffer *buf, *tmp; 306 307 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_QUEUED); 308 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) { 309 list_del(&buf->list); 310 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED); 311 } 312 313 return ret; 314 } 315 316 /* 317 * if request format is yuv420 semiplanar, need to 318 * enable both video windows 319 */ 320 layer->layer_first_int = 1; 321 322 return ret; 323} 324 325static void vpbe_stop_streaming(struct vb2_queue *vq) 326{ 327 struct vpbe_layer *layer = vb2_get_drv_priv(vq); 328 struct osd_state *osd_device = layer->disp_dev->osd_device; 329 struct vpbe_display *disp = layer->disp_dev; 330 unsigned long flags; 331 332 if (!vb2_is_streaming(vq)) 333 return; 334 335 osd_device->ops.disable_layer(osd_device, layer->layer_info.id); 336 337 /* release all active buffers */ 338 spin_lock_irqsave(&disp->dma_queue_lock, flags); 339 if (layer->cur_frm == layer->next_frm) { 340 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_ERROR); 341 } else { 342 if (layer->cur_frm != NULL) 343 vb2_buffer_done(&layer->cur_frm->vb, 344 VB2_BUF_STATE_ERROR); 345 if (layer->next_frm != NULL) 346 vb2_buffer_done(&layer->next_frm->vb, 347 VB2_BUF_STATE_ERROR); 348 } 349 350 while (!list_empty(&layer->dma_queue)) { 351 layer->next_frm = list_entry(layer->dma_queue.next, 352 struct vpbe_disp_buffer, list); 353 list_del(&layer->next_frm->list); 354 vb2_buffer_done(&layer->next_frm->vb, VB2_BUF_STATE_ERROR); 355 } 356 spin_unlock_irqrestore(&disp->dma_queue_lock, flags); 357} 358 359static struct vb2_ops video_qops = { 360 .queue_setup = vpbe_buffer_queue_setup, 361 .wait_prepare = vb2_ops_wait_prepare, 362 .wait_finish = vb2_ops_wait_finish, 363 .buf_prepare = vpbe_buffer_prepare, 364 .start_streaming = vpbe_start_streaming, 365 .stop_streaming = vpbe_stop_streaming, 366 .buf_queue = vpbe_buffer_queue, 367}; 368 369static 370struct vpbe_layer* 371_vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev, 372 struct vpbe_layer *layer) 373{ 374 enum vpbe_display_device_id thiswin, otherwin; 375 thiswin = layer->device_id; 376 377 otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ? 378 VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0; 379 return disp_dev->dev[otherwin]; 380} 381 382static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev, 383 struct vpbe_layer *layer) 384{ 385 struct osd_layer_config *cfg = &layer->layer_info.config; 386 struct osd_state *osd_device = disp_dev->osd_device; 387 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 388 unsigned long addr; 389 int ret; 390 391 addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb, 0); 392 /* Set address in the display registers */ 393 osd_device->ops.start_layer(osd_device, 394 layer->layer_info.id, 395 addr, 396 disp_dev->cbcr_ofst); 397 398 ret = osd_device->ops.enable_layer(osd_device, 399 layer->layer_info.id, 0); 400 if (ret < 0) { 401 v4l2_err(&vpbe_dev->v4l2_dev, 402 "Error in enabling osd window layer 0\n"); 403 return -1; 404 } 405 406 /* Enable the window */ 407 layer->layer_info.enable = 1; 408 if (cfg->pixfmt == PIXFMT_NV12) { 409 struct vpbe_layer *otherlayer = 410 _vpbe_display_get_other_win_layer(disp_dev, layer); 411 412 ret = osd_device->ops.enable_layer(osd_device, 413 otherlayer->layer_info.id, 1); 414 if (ret < 0) { 415 v4l2_err(&vpbe_dev->v4l2_dev, 416 "Error in enabling osd window layer 1\n"); 417 return -1; 418 } 419 otherlayer->layer_info.enable = 1; 420 } 421 return 0; 422} 423 424static void 425vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev, 426 struct vpbe_layer *layer, 427 int expected_xsize, int expected_ysize) 428{ 429 struct display_layer_info *layer_info = &layer->layer_info; 430 struct v4l2_pix_format *pixfmt = &layer->pix_fmt; 431 struct osd_layer_config *cfg = &layer->layer_info.config; 432 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 433 int calculated_xsize; 434 int h_exp = 0; 435 int v_exp = 0; 436 int h_scale; 437 int v_scale; 438 439 v4l2_std_id standard_id = vpbe_dev->current_timings.std_id; 440 441 /* 442 * Application initially set the image format. Current display 443 * size is obtained from the vpbe display controller. expected_xsize 444 * and expected_ysize are set through S_CROP ioctl. Based on this, 445 * driver will calculate the scale factors for vertical and 446 * horizontal direction so that the image is displayed scaled 447 * and expanded. Application uses expansion to display the image 448 * in a square pixel. Otherwise it is displayed using displays 449 * pixel aspect ratio.It is expected that application chooses 450 * the crop coordinates for cropped or scaled display. if crop 451 * size is less than the image size, it is displayed cropped or 452 * it is displayed scaled and/or expanded. 453 * 454 * to begin with, set the crop window same as expected. Later we 455 * will override with scaled window size 456 */ 457 458 cfg->xsize = pixfmt->width; 459 cfg->ysize = pixfmt->height; 460 layer_info->h_zoom = ZOOM_X1; /* no horizontal zoom */ 461 layer_info->v_zoom = ZOOM_X1; /* no horizontal zoom */ 462 layer_info->h_exp = H_EXP_OFF; /* no horizontal zoom */ 463 layer_info->v_exp = V_EXP_OFF; /* no horizontal zoom */ 464 465 if (pixfmt->width < expected_xsize) { 466 h_scale = vpbe_dev->current_timings.xres / pixfmt->width; 467 if (h_scale < 2) 468 h_scale = 1; 469 else if (h_scale >= 4) 470 h_scale = 4; 471 else 472 h_scale = 2; 473 cfg->xsize *= h_scale; 474 if (cfg->xsize < expected_xsize) { 475 if ((standard_id & V4L2_STD_525_60) || 476 (standard_id & V4L2_STD_625_50)) { 477 calculated_xsize = (cfg->xsize * 478 VPBE_DISPLAY_H_EXP_RATIO_N) / 479 VPBE_DISPLAY_H_EXP_RATIO_D; 480 if (calculated_xsize <= expected_xsize) { 481 h_exp = 1; 482 cfg->xsize = calculated_xsize; 483 } 484 } 485 } 486 if (h_scale == 2) 487 layer_info->h_zoom = ZOOM_X2; 488 else if (h_scale == 4) 489 layer_info->h_zoom = ZOOM_X4; 490 if (h_exp) 491 layer_info->h_exp = H_EXP_9_OVER_8; 492 } else { 493 /* no scaling, only cropping. Set display area to crop area */ 494 cfg->xsize = expected_xsize; 495 } 496 497 if (pixfmt->height < expected_ysize) { 498 v_scale = expected_ysize / pixfmt->height; 499 if (v_scale < 2) 500 v_scale = 1; 501 else if (v_scale >= 4) 502 v_scale = 4; 503 else 504 v_scale = 2; 505 cfg->ysize *= v_scale; 506 if (cfg->ysize < expected_ysize) { 507 if ((standard_id & V4L2_STD_625_50)) { 508 calculated_xsize = (cfg->ysize * 509 VPBE_DISPLAY_V_EXP_RATIO_N) / 510 VPBE_DISPLAY_V_EXP_RATIO_D; 511 if (calculated_xsize <= expected_ysize) { 512 v_exp = 1; 513 cfg->ysize = calculated_xsize; 514 } 515 } 516 } 517 if (v_scale == 2) 518 layer_info->v_zoom = ZOOM_X2; 519 else if (v_scale == 4) 520 layer_info->v_zoom = ZOOM_X4; 521 if (v_exp) 522 layer_info->h_exp = V_EXP_6_OVER_5; 523 } else { 524 /* no scaling, only cropping. Set display area to crop area */ 525 cfg->ysize = expected_ysize; 526 } 527 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 528 "crop display xsize = %d, ysize = %d\n", 529 cfg->xsize, cfg->ysize); 530} 531 532static void vpbe_disp_adj_position(struct vpbe_display *disp_dev, 533 struct vpbe_layer *layer, 534 int top, int left) 535{ 536 struct osd_layer_config *cfg = &layer->layer_info.config; 537 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 538 539 cfg->xpos = min((unsigned int)left, 540 vpbe_dev->current_timings.xres - cfg->xsize); 541 cfg->ypos = min((unsigned int)top, 542 vpbe_dev->current_timings.yres - cfg->ysize); 543 544 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 545 "new xpos = %d, ypos = %d\n", 546 cfg->xpos, cfg->ypos); 547} 548 549static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev, 550 struct v4l2_rect *c) 551{ 552 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 553 554 if ((c->width == 0) || 555 ((c->width + c->left) > vpbe_dev->current_timings.xres)) 556 c->width = vpbe_dev->current_timings.xres - c->left; 557 558 if ((c->height == 0) || ((c->height + c->top) > 559 vpbe_dev->current_timings.yres)) 560 c->height = vpbe_dev->current_timings.yres - c->top; 561 562 /* window height must be even for interlaced display */ 563 if (vpbe_dev->current_timings.interlaced) 564 c->height &= (~0x01); 565 566} 567 568/** 569 * vpbe_try_format() 570 * If user application provides width and height, and have bytesperline set 571 * to zero, driver calculates bytesperline and sizeimage based on hardware 572 * limits. 573 */ 574static int vpbe_try_format(struct vpbe_display *disp_dev, 575 struct v4l2_pix_format *pixfmt, int check) 576{ 577 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 578 int min_height = 1; 579 int min_width = 32; 580 int max_height; 581 int max_width; 582 int bpp; 583 584 if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) && 585 (pixfmt->pixelformat != V4L2_PIX_FMT_NV12)) 586 /* choose default as V4L2_PIX_FMT_UYVY */ 587 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY; 588 589 /* Check the field format */ 590 if ((pixfmt->field != V4L2_FIELD_INTERLACED) && 591 (pixfmt->field != V4L2_FIELD_NONE)) { 592 if (vpbe_dev->current_timings.interlaced) 593 pixfmt->field = V4L2_FIELD_INTERLACED; 594 else 595 pixfmt->field = V4L2_FIELD_NONE; 596 } 597 598 if (pixfmt->field == V4L2_FIELD_INTERLACED) 599 min_height = 2; 600 601 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) 602 bpp = 1; 603 else 604 bpp = 2; 605 606 max_width = vpbe_dev->current_timings.xres; 607 max_height = vpbe_dev->current_timings.yres; 608 609 min_width /= bpp; 610 611 if (!pixfmt->width || (pixfmt->width < min_width) || 612 (pixfmt->width > max_width)) { 613 pixfmt->width = vpbe_dev->current_timings.xres; 614 } 615 616 if (!pixfmt->height || (pixfmt->height < min_height) || 617 (pixfmt->height > max_height)) { 618 pixfmt->height = vpbe_dev->current_timings.yres; 619 } 620 621 if (pixfmt->bytesperline < (pixfmt->width * bpp)) 622 pixfmt->bytesperline = pixfmt->width * bpp; 623 624 /* Make the bytesperline 32 byte aligned */ 625 pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31); 626 627 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) 628 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height + 629 (pixfmt->bytesperline * pixfmt->height >> 1); 630 else 631 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height; 632 633 return 0; 634} 635 636static int vpbe_display_querycap(struct file *file, void *priv, 637 struct v4l2_capability *cap) 638{ 639 struct vpbe_layer *layer = video_drvdata(file); 640 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 641 642 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; 643 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 644 snprintf(cap->driver, sizeof(cap->driver), "%s", 645 dev_name(vpbe_dev->pdev)); 646 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", 647 dev_name(vpbe_dev->pdev)); 648 strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card)); 649 650 return 0; 651} 652 653static int vpbe_display_s_crop(struct file *file, void *priv, 654 const struct v4l2_crop *crop) 655{ 656 struct vpbe_layer *layer = video_drvdata(file); 657 struct vpbe_display *disp_dev = layer->disp_dev; 658 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 659 struct osd_layer_config *cfg = &layer->layer_info.config; 660 struct osd_state *osd_device = disp_dev->osd_device; 661 struct v4l2_rect rect = crop->c; 662 int ret; 663 664 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 665 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id); 666 667 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { 668 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n"); 669 return -EINVAL; 670 } 671 672 if (rect.top < 0) 673 rect.top = 0; 674 if (rect.left < 0) 675 rect.left = 0; 676 677 vpbe_disp_check_window_params(disp_dev, &rect); 678 679 osd_device->ops.get_layer_config(osd_device, 680 layer->layer_info.id, cfg); 681 682 vpbe_disp_calculate_scale_factor(disp_dev, layer, 683 rect.width, 684 rect.height); 685 vpbe_disp_adj_position(disp_dev, layer, rect.top, 686 rect.left); 687 ret = osd_device->ops.set_layer_config(osd_device, 688 layer->layer_info.id, cfg); 689 if (ret < 0) { 690 v4l2_err(&vpbe_dev->v4l2_dev, 691 "Error in set layer config:\n"); 692 return -EINVAL; 693 } 694 695 /* apply zooming and h or v expansion */ 696 osd_device->ops.set_zoom(osd_device, 697 layer->layer_info.id, 698 layer->layer_info.h_zoom, 699 layer->layer_info.v_zoom); 700 ret = osd_device->ops.set_vid_expansion(osd_device, 701 layer->layer_info.h_exp, 702 layer->layer_info.v_exp); 703 if (ret < 0) { 704 v4l2_err(&vpbe_dev->v4l2_dev, 705 "Error in set vid expansion:\n"); 706 return -EINVAL; 707 } 708 709 if ((layer->layer_info.h_zoom != ZOOM_X1) || 710 (layer->layer_info.v_zoom != ZOOM_X1) || 711 (layer->layer_info.h_exp != H_EXP_OFF) || 712 (layer->layer_info.v_exp != V_EXP_OFF)) 713 /* Enable expansion filter */ 714 osd_device->ops.set_interpolation_filter(osd_device, 1); 715 else 716 osd_device->ops.set_interpolation_filter(osd_device, 0); 717 718 return 0; 719} 720 721static int vpbe_display_g_crop(struct file *file, void *priv, 722 struct v4l2_crop *crop) 723{ 724 struct vpbe_layer *layer = video_drvdata(file); 725 struct osd_layer_config *cfg = &layer->layer_info.config; 726 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 727 struct osd_state *osd_device = layer->disp_dev->osd_device; 728 struct v4l2_rect *rect = &crop->c; 729 730 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 731 "VIDIOC_G_CROP, layer id = %d\n", 732 layer->device_id); 733 734 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { 735 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n"); 736 return -EINVAL; 737 } 738 osd_device->ops.get_layer_config(osd_device, 739 layer->layer_info.id, cfg); 740 rect->top = cfg->ypos; 741 rect->left = cfg->xpos; 742 rect->width = cfg->xsize; 743 rect->height = cfg->ysize; 744 745 return 0; 746} 747 748static int vpbe_display_cropcap(struct file *file, void *priv, 749 struct v4l2_cropcap *cropcap) 750{ 751 struct vpbe_layer *layer = video_drvdata(file); 752 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 753 754 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n"); 755 756 cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 757 cropcap->bounds.left = 0; 758 cropcap->bounds.top = 0; 759 cropcap->bounds.width = vpbe_dev->current_timings.xres; 760 cropcap->bounds.height = vpbe_dev->current_timings.yres; 761 cropcap->pixelaspect = vpbe_dev->current_timings.aspect; 762 cropcap->defrect = cropcap->bounds; 763 return 0; 764} 765 766static int vpbe_display_g_fmt(struct file *file, void *priv, 767 struct v4l2_format *fmt) 768{ 769 struct vpbe_layer *layer = video_drvdata(file); 770 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 771 772 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 773 "VIDIOC_G_FMT, layer id = %d\n", 774 layer->device_id); 775 776 /* If buffer type is video output */ 777 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) { 778 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n"); 779 return -EINVAL; 780 } 781 /* Fill in the information about format */ 782 fmt->fmt.pix = layer->pix_fmt; 783 784 return 0; 785} 786 787static int vpbe_display_enum_fmt(struct file *file, void *priv, 788 struct v4l2_fmtdesc *fmt) 789{ 790 struct vpbe_layer *layer = video_drvdata(file); 791 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 792 unsigned int index = 0; 793 794 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 795 "VIDIOC_ENUM_FMT, layer id = %d\n", 796 layer->device_id); 797 if (fmt->index > 1) { 798 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n"); 799 return -EINVAL; 800 } 801 802 /* Fill in the information about format */ 803 index = fmt->index; 804 memset(fmt, 0, sizeof(*fmt)); 805 fmt->index = index; 806 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 807 if (index == 0) { 808 strcpy(fmt->description, "YUV 4:2:2 - UYVY"); 809 fmt->pixelformat = V4L2_PIX_FMT_UYVY; 810 } else { 811 strcpy(fmt->description, "Y/CbCr 4:2:0"); 812 fmt->pixelformat = V4L2_PIX_FMT_NV12; 813 } 814 815 return 0; 816} 817 818static int vpbe_display_s_fmt(struct file *file, void *priv, 819 struct v4l2_format *fmt) 820{ 821 struct vpbe_layer *layer = video_drvdata(file); 822 struct vpbe_display *disp_dev = layer->disp_dev; 823 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 824 struct osd_layer_config *cfg = &layer->layer_info.config; 825 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; 826 struct osd_state *osd_device = disp_dev->osd_device; 827 int ret; 828 829 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 830 "VIDIOC_S_FMT, layer id = %d\n", 831 layer->device_id); 832 833 if (vb2_is_busy(&layer->buffer_queue)) 834 return -EBUSY; 835 836 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) { 837 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n"); 838 return -EINVAL; 839 } 840 /* Check for valid pixel format */ 841 ret = vpbe_try_format(disp_dev, pixfmt, 1); 842 if (ret) 843 return ret; 844 845 /* YUV420 is requested, check availability of the 846 other video window */ 847 848 layer->pix_fmt = *pixfmt; 849 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) { 850 struct vpbe_layer *otherlayer; 851 852 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer); 853 /* if other layer is available, only 854 * claim it, do not configure it 855 */ 856 ret = osd_device->ops.request_layer(osd_device, 857 otherlayer->layer_info.id); 858 if (ret < 0) { 859 v4l2_err(&vpbe_dev->v4l2_dev, 860 "Display Manager failed to allocate layer\n"); 861 return -EBUSY; 862 } 863 } 864 865 /* Get osd layer config */ 866 osd_device->ops.get_layer_config(osd_device, 867 layer->layer_info.id, cfg); 868 /* Store the pixel format in the layer object */ 869 cfg->xsize = pixfmt->width; 870 cfg->ysize = pixfmt->height; 871 cfg->line_length = pixfmt->bytesperline; 872 cfg->ypos = 0; 873 cfg->xpos = 0; 874 cfg->interlaced = vpbe_dev->current_timings.interlaced; 875 876 if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat) 877 cfg->pixfmt = PIXFMT_YCBCRI; 878 879 /* Change of the default pixel format for both video windows */ 880 if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) { 881 struct vpbe_layer *otherlayer; 882 cfg->pixfmt = PIXFMT_NV12; 883 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, 884 layer); 885 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12; 886 } 887 888 /* Set the layer config in the osd window */ 889 ret = osd_device->ops.set_layer_config(osd_device, 890 layer->layer_info.id, cfg); 891 if (ret < 0) { 892 v4l2_err(&vpbe_dev->v4l2_dev, 893 "Error in S_FMT params:\n"); 894 return -EINVAL; 895 } 896 897 /* Readback and fill the local copy of current pix format */ 898 osd_device->ops.get_layer_config(osd_device, 899 layer->layer_info.id, cfg); 900 901 return 0; 902} 903 904static int vpbe_display_try_fmt(struct file *file, void *priv, 905 struct v4l2_format *fmt) 906{ 907 struct vpbe_layer *layer = video_drvdata(file); 908 struct vpbe_display *disp_dev = layer->disp_dev; 909 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 910 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; 911 912 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n"); 913 914 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) { 915 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n"); 916 return -EINVAL; 917 } 918 919 /* Check for valid field format */ 920 return vpbe_try_format(disp_dev, pixfmt, 0); 921 922} 923 924/** 925 * vpbe_display_s_std - Set the given standard in the encoder 926 * 927 * Sets the standard if supported by the current encoder. Return the status. 928 * 0 - success & -EINVAL on error 929 */ 930static int vpbe_display_s_std(struct file *file, void *priv, 931 v4l2_std_id std_id) 932{ 933 struct vpbe_layer *layer = video_drvdata(file); 934 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 935 int ret; 936 937 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n"); 938 939 if (vb2_is_busy(&layer->buffer_queue)) 940 return -EBUSY; 941 942 if (NULL != vpbe_dev->ops.s_std) { 943 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id); 944 if (ret) { 945 v4l2_err(&vpbe_dev->v4l2_dev, 946 "Failed to set standard for sub devices\n"); 947 return -EINVAL; 948 } 949 } else { 950 return -EINVAL; 951 } 952 953 return 0; 954} 955 956/** 957 * vpbe_display_g_std - Get the standard in the current encoder 958 * 959 * Get the standard in the current encoder. Return the status. 0 - success 960 * -EINVAL on error 961 */ 962static int vpbe_display_g_std(struct file *file, void *priv, 963 v4l2_std_id *std_id) 964{ 965 struct vpbe_layer *layer = video_drvdata(file); 966 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 967 968 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n"); 969 970 /* Get the standard from the current encoder */ 971 if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) { 972 *std_id = vpbe_dev->current_timings.std_id; 973 return 0; 974 } 975 976 return -EINVAL; 977} 978 979/** 980 * vpbe_display_enum_output - enumerate outputs 981 * 982 * Enumerates the outputs available at the vpbe display 983 * returns the status, -EINVAL if end of output list 984 */ 985static int vpbe_display_enum_output(struct file *file, void *priv, 986 struct v4l2_output *output) 987{ 988 struct vpbe_layer *layer = video_drvdata(file); 989 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 990 int ret; 991 992 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n"); 993 994 /* Enumerate outputs */ 995 996 if (NULL == vpbe_dev->ops.enum_outputs) 997 return -EINVAL; 998 999 ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output); 1000 if (ret) { 1001 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 1002 "Failed to enumerate outputs\n"); 1003 return -EINVAL; 1004 } 1005 1006 return 0; 1007} 1008 1009/** 1010 * vpbe_display_s_output - Set output to 1011 * the output specified by the index 1012 */ 1013static int vpbe_display_s_output(struct file *file, void *priv, 1014 unsigned int i) 1015{ 1016 struct vpbe_layer *layer = video_drvdata(file); 1017 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 1018 int ret; 1019 1020 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n"); 1021 1022 if (vb2_is_busy(&layer->buffer_queue)) 1023 return -EBUSY; 1024 1025 if (NULL == vpbe_dev->ops.set_output) 1026 return -EINVAL; 1027 1028 ret = vpbe_dev->ops.set_output(vpbe_dev, i); 1029 if (ret) { 1030 v4l2_err(&vpbe_dev->v4l2_dev, 1031 "Failed to set output for sub devices\n"); 1032 return -EINVAL; 1033 } 1034 1035 return 0; 1036} 1037 1038/** 1039 * vpbe_display_g_output - Get output from subdevice 1040 * for a given by the index 1041 */ 1042static int vpbe_display_g_output(struct file *file, void *priv, 1043 unsigned int *i) 1044{ 1045 struct vpbe_layer *layer = video_drvdata(file); 1046 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 1047 1048 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n"); 1049 /* Get the standard from the current encoder */ 1050 *i = vpbe_dev->current_out_index; 1051 1052 return 0; 1053} 1054 1055/** 1056 * vpbe_display_enum_dv_timings - Enumerate the dv timings 1057 * 1058 * enum the timings in the current encoder. Return the status. 0 - success 1059 * -EINVAL on error 1060 */ 1061static int 1062vpbe_display_enum_dv_timings(struct file *file, void *priv, 1063 struct v4l2_enum_dv_timings *timings) 1064{ 1065 struct vpbe_layer *layer = video_drvdata(file); 1066 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 1067 int ret; 1068 1069 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n"); 1070 1071 /* Enumerate outputs */ 1072 if (NULL == vpbe_dev->ops.enum_dv_timings) 1073 return -EINVAL; 1074 1075 ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings); 1076 if (ret) { 1077 v4l2_err(&vpbe_dev->v4l2_dev, 1078 "Failed to enumerate dv timings info\n"); 1079 return -EINVAL; 1080 } 1081 1082 return 0; 1083} 1084 1085/** 1086 * vpbe_display_s_dv_timings - Set the dv timings 1087 * 1088 * Set the timings in the current encoder. Return the status. 0 - success 1089 * -EINVAL on error 1090 */ 1091static int 1092vpbe_display_s_dv_timings(struct file *file, void *priv, 1093 struct v4l2_dv_timings *timings) 1094{ 1095 struct vpbe_layer *layer = video_drvdata(file); 1096 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 1097 int ret; 1098 1099 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n"); 1100 1101 if (vb2_is_busy(&layer->buffer_queue)) 1102 return -EBUSY; 1103 1104 /* Set the given standard in the encoder */ 1105 if (!vpbe_dev->ops.s_dv_timings) 1106 return -EINVAL; 1107 1108 ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings); 1109 if (ret) { 1110 v4l2_err(&vpbe_dev->v4l2_dev, 1111 "Failed to set the dv timings info\n"); 1112 return -EINVAL; 1113 } 1114 1115 return 0; 1116} 1117 1118/** 1119 * vpbe_display_g_dv_timings - Set the dv timings 1120 * 1121 * Get the timings in the current encoder. Return the status. 0 - success 1122 * -EINVAL on error 1123 */ 1124static int 1125vpbe_display_g_dv_timings(struct file *file, void *priv, 1126 struct v4l2_dv_timings *dv_timings) 1127{ 1128 struct vpbe_layer *layer = video_drvdata(file); 1129 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; 1130 1131 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n"); 1132 1133 /* Get the given standard in the encoder */ 1134 1135 if (vpbe_dev->current_timings.timings_type & 1136 VPBE_ENC_DV_TIMINGS) { 1137 *dv_timings = vpbe_dev->current_timings.dv_timings; 1138 } else { 1139 return -EINVAL; 1140 } 1141 1142 return 0; 1143} 1144 1145/* 1146 * vpbe_display_open() 1147 * It creates object of file handle structure and stores it in private_data 1148 * member of filepointer 1149 */ 1150static int vpbe_display_open(struct file *file) 1151{ 1152 struct vpbe_layer *layer = video_drvdata(file); 1153 struct vpbe_display *disp_dev = layer->disp_dev; 1154 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 1155 struct osd_state *osd_device = disp_dev->osd_device; 1156 int err; 1157 1158 /* creating context for file descriptor */ 1159 err = v4l2_fh_open(file); 1160 if (err) { 1161 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n"); 1162 return err; 1163 } 1164 1165 /* leaving if layer is already initialized */ 1166 if (!v4l2_fh_is_singular_file(file)) 1167 return err; 1168 1169 if (!layer->usrs) { 1170 if (mutex_lock_interruptible(&layer->opslock)) 1171 return -ERESTARTSYS; 1172 /* First claim the layer for this device */ 1173 err = osd_device->ops.request_layer(osd_device, 1174 layer->layer_info.id); 1175 mutex_unlock(&layer->opslock); 1176 if (err < 0) { 1177 /* Couldn't get layer */ 1178 v4l2_err(&vpbe_dev->v4l2_dev, 1179 "Display Manager failed to allocate layer\n"); 1180 v4l2_fh_release(file); 1181 return -EINVAL; 1182 } 1183 } 1184 /* Increment layer usrs counter */ 1185 layer->usrs++; 1186 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, 1187 "vpbe display device opened successfully\n"); 1188 return 0; 1189} 1190 1191/* 1192 * vpbe_display_release() 1193 * This function deletes buffer queue, frees the buffers and the davinci 1194 * display file * handle 1195 */ 1196static int vpbe_display_release(struct file *file) 1197{ 1198 struct vpbe_layer *layer = video_drvdata(file); 1199 struct osd_layer_config *cfg = &layer->layer_info.config; 1200 struct vpbe_display *disp_dev = layer->disp_dev; 1201 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 1202 struct osd_state *osd_device = disp_dev->osd_device; 1203 1204 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n"); 1205 1206 mutex_lock(&layer->opslock); 1207 1208 osd_device->ops.disable_layer(osd_device, 1209 layer->layer_info.id); 1210 /* Decrement layer usrs counter */ 1211 layer->usrs--; 1212 /* If this file handle has initialize encoder device, reset it */ 1213 if (!layer->usrs) { 1214 if (cfg->pixfmt == PIXFMT_NV12) { 1215 struct vpbe_layer *otherlayer; 1216 otherlayer = 1217 _vpbe_display_get_other_win_layer(disp_dev, layer); 1218 osd_device->ops.disable_layer(osd_device, 1219 otherlayer->layer_info.id); 1220 osd_device->ops.release_layer(osd_device, 1221 otherlayer->layer_info.id); 1222 } 1223 osd_device->ops.disable_layer(osd_device, 1224 layer->layer_info.id); 1225 osd_device->ops.release_layer(osd_device, 1226 layer->layer_info.id); 1227 } 1228 1229 _vb2_fop_release(file, NULL); 1230 mutex_unlock(&layer->opslock); 1231 1232 disp_dev->cbcr_ofst = 0; 1233 1234 return 0; 1235} 1236 1237/* vpbe capture ioctl operations */ 1238static const struct v4l2_ioctl_ops vpbe_ioctl_ops = { 1239 .vidioc_querycap = vpbe_display_querycap, 1240 .vidioc_g_fmt_vid_out = vpbe_display_g_fmt, 1241 .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt, 1242 .vidioc_s_fmt_vid_out = vpbe_display_s_fmt, 1243 .vidioc_try_fmt_vid_out = vpbe_display_try_fmt, 1244 1245 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1246 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1247 .vidioc_querybuf = vb2_ioctl_querybuf, 1248 .vidioc_qbuf = vb2_ioctl_qbuf, 1249 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1250 .vidioc_streamon = vb2_ioctl_streamon, 1251 .vidioc_streamoff = vb2_ioctl_streamoff, 1252 .vidioc_expbuf = vb2_ioctl_expbuf, 1253 1254 .vidioc_cropcap = vpbe_display_cropcap, 1255 .vidioc_g_crop = vpbe_display_g_crop, 1256 .vidioc_s_crop = vpbe_display_s_crop, 1257 1258 .vidioc_s_std = vpbe_display_s_std, 1259 .vidioc_g_std = vpbe_display_g_std, 1260 1261 .vidioc_enum_output = vpbe_display_enum_output, 1262 .vidioc_s_output = vpbe_display_s_output, 1263 .vidioc_g_output = vpbe_display_g_output, 1264 1265 .vidioc_s_dv_timings = vpbe_display_s_dv_timings, 1266 .vidioc_g_dv_timings = vpbe_display_g_dv_timings, 1267 .vidioc_enum_dv_timings = vpbe_display_enum_dv_timings, 1268}; 1269 1270static struct v4l2_file_operations vpbe_fops = { 1271 .owner = THIS_MODULE, 1272 .open = vpbe_display_open, 1273 .release = vpbe_display_release, 1274 .unlocked_ioctl = video_ioctl2, 1275 .mmap = vb2_fop_mmap, 1276 .poll = vb2_fop_poll, 1277}; 1278 1279static int vpbe_device_get(struct device *dev, void *data) 1280{ 1281 struct platform_device *pdev = to_platform_device(dev); 1282 struct vpbe_display *vpbe_disp = data; 1283 1284 if (strcmp("vpbe_controller", pdev->name) == 0) 1285 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev); 1286 1287 if (strstr(pdev->name, "vpbe-osd") != NULL) 1288 vpbe_disp->osd_device = platform_get_drvdata(pdev); 1289 1290 return 0; 1291} 1292 1293static int init_vpbe_layer(int i, struct vpbe_display *disp_dev, 1294 struct platform_device *pdev) 1295{ 1296 struct vpbe_layer *vpbe_display_layer = NULL; 1297 struct video_device *vbd = NULL; 1298 1299 /* Allocate memory for four plane display objects */ 1300 1301 disp_dev->dev[i] = 1302 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL); 1303 1304 /* If memory allocation fails, return error */ 1305 if (!disp_dev->dev[i]) { 1306 printk(KERN_ERR "ran out of memory\n"); 1307 return -ENOMEM; 1308 } 1309 spin_lock_init(&disp_dev->dev[i]->irqlock); 1310 mutex_init(&disp_dev->dev[i]->opslock); 1311 1312 /* Get the pointer to the layer object */ 1313 vpbe_display_layer = disp_dev->dev[i]; 1314 vbd = &vpbe_display_layer->video_dev; 1315 /* Initialize field of video device */ 1316 vbd->release = video_device_release_empty; 1317 vbd->fops = &vpbe_fops; 1318 vbd->ioctl_ops = &vpbe_ioctl_ops; 1319 vbd->minor = -1; 1320 vbd->v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev; 1321 vbd->lock = &vpbe_display_layer->opslock; 1322 vbd->vfl_dir = VFL_DIR_TX; 1323 1324 if (disp_dev->vpbe_dev->current_timings.timings_type & 1325 VPBE_ENC_STD) 1326 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50); 1327 1328 snprintf(vbd->name, sizeof(vbd->name), 1329 "DaVinci_VPBE Display_DRIVER_V%d.%d.%d", 1330 (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff, 1331 (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff, 1332 (VPBE_DISPLAY_VERSION_CODE) & 0xff); 1333 1334 vpbe_display_layer->device_id = i; 1335 1336 vpbe_display_layer->layer_info.id = 1337 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1); 1338 1339 1340 return 0; 1341} 1342 1343static int register_device(struct vpbe_layer *vpbe_display_layer, 1344 struct vpbe_display *disp_dev, 1345 struct platform_device *pdev) 1346{ 1347 int err; 1348 1349 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev, 1350 "Trying to register VPBE display device.\n"); 1351 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev, 1352 "layer=%x,layer->video_dev=%x\n", 1353 (int)vpbe_display_layer, 1354 (int)&vpbe_display_layer->video_dev); 1355 1356 vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue; 1357 err = video_register_device(&vpbe_display_layer->video_dev, 1358 VFL_TYPE_GRABBER, 1359 -1); 1360 if (err) 1361 return -ENODEV; 1362 1363 vpbe_display_layer->disp_dev = disp_dev; 1364 /* set the driver data in platform device */ 1365 platform_set_drvdata(pdev, disp_dev); 1366 video_set_drvdata(&vpbe_display_layer->video_dev, 1367 vpbe_display_layer); 1368 1369 return 0; 1370} 1371 1372 1373 1374/* 1375 * vpbe_display_probe() 1376 * This function creates device entries by register itself to the V4L2 driver 1377 * and initializes fields of each layer objects 1378 */ 1379static int vpbe_display_probe(struct platform_device *pdev) 1380{ 1381 struct vpbe_display *disp_dev; 1382 struct v4l2_device *v4l2_dev; 1383 struct resource *res = NULL; 1384 struct vb2_queue *q; 1385 int k; 1386 int i; 1387 int err; 1388 int irq; 1389 1390 printk(KERN_DEBUG "vpbe_display_probe\n"); 1391 /* Allocate memory for vpbe_display */ 1392 disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display), 1393 GFP_KERNEL); 1394 if (!disp_dev) 1395 return -ENOMEM; 1396 1397 spin_lock_init(&disp_dev->dma_queue_lock); 1398 /* 1399 * Scan all the platform devices to find the vpbe 1400 * controller device and get the vpbe_dev object 1401 */ 1402 err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev, 1403 vpbe_device_get); 1404 if (err < 0) 1405 return err; 1406 1407 v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev; 1408 /* Initialize the vpbe display controller */ 1409 if (NULL != disp_dev->vpbe_dev->ops.initialize) { 1410 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev, 1411 disp_dev->vpbe_dev); 1412 if (err) { 1413 v4l2_err(v4l2_dev, "Error initing vpbe\n"); 1414 err = -ENOMEM; 1415 goto probe_out; 1416 } 1417 } 1418 1419 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { 1420 if (init_vpbe_layer(i, disp_dev, pdev)) { 1421 err = -ENODEV; 1422 goto probe_out; 1423 } 1424 } 1425 1426 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 1427 if (!res) { 1428 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n"); 1429 err = -ENODEV; 1430 goto probe_out; 1431 } 1432 1433 irq = res->start; 1434 err = devm_request_irq(&pdev->dev, irq, venc_isr, 0, 1435 VPBE_DISPLAY_DRIVER, disp_dev); 1436 if (err) { 1437 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n"); 1438 goto probe_out; 1439 } 1440 1441 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { 1442 /* initialize vb2 queue */ 1443 q = &disp_dev->dev[i]->buffer_queue; 1444 memset(q, 0, sizeof(*q)); 1445 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 1446 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 1447 q->drv_priv = disp_dev->dev[i]; 1448 q->ops = &video_qops; 1449 q->mem_ops = &vb2_dma_contig_memops; 1450 q->buf_struct_size = sizeof(struct vpbe_disp_buffer); 1451 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1452 q->min_buffers_needed = 1; 1453 q->lock = &disp_dev->dev[i]->opslock; 1454 err = vb2_queue_init(q); 1455 if (err) { 1456 v4l2_err(v4l2_dev, "vb2_queue_init() failed\n"); 1457 goto probe_out; 1458 } 1459 1460 disp_dev->dev[i]->alloc_ctx = 1461 vb2_dma_contig_init_ctx(disp_dev->vpbe_dev->pdev); 1462 if (IS_ERR(disp_dev->dev[i]->alloc_ctx)) { 1463 v4l2_err(v4l2_dev, "Failed to get the context\n"); 1464 err = PTR_ERR(disp_dev->dev[i]->alloc_ctx); 1465 goto probe_out; 1466 } 1467 1468 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue); 1469 1470 if (register_device(disp_dev->dev[i], disp_dev, pdev)) { 1471 err = -ENODEV; 1472 goto probe_out; 1473 } 1474 } 1475 1476 v4l2_dbg(1, debug, v4l2_dev, 1477 "Successfully completed the probing of vpbe v4l2 device\n"); 1478 1479 return 0; 1480 1481probe_out: 1482 for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) { 1483 /* Unregister video device */ 1484 if (disp_dev->dev[k] != NULL) { 1485 vb2_dma_contig_cleanup_ctx(disp_dev->dev[k]->alloc_ctx); 1486 video_unregister_device(&disp_dev->dev[k]->video_dev); 1487 kfree(disp_dev->dev[k]); 1488 } 1489 } 1490 return err; 1491} 1492 1493/* 1494 * vpbe_display_remove() 1495 * It un-register hardware layer from V4L2 driver 1496 */ 1497static int vpbe_display_remove(struct platform_device *pdev) 1498{ 1499 struct vpbe_layer *vpbe_display_layer; 1500 struct vpbe_display *disp_dev = platform_get_drvdata(pdev); 1501 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; 1502 int i; 1503 1504 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n"); 1505 1506 /* deinitialize the vpbe display controller */ 1507 if (NULL != vpbe_dev->ops.deinitialize) 1508 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev); 1509 /* un-register device */ 1510 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { 1511 /* Get the pointer to the layer object */ 1512 vpbe_display_layer = disp_dev->dev[i]; 1513 vb2_dma_contig_cleanup_ctx(vpbe_display_layer->alloc_ctx); 1514 /* Unregister video device */ 1515 video_unregister_device(&vpbe_display_layer->video_dev); 1516 1517 } 1518 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { 1519 kfree(disp_dev->dev[i]); 1520 disp_dev->dev[i] = NULL; 1521 } 1522 1523 return 0; 1524} 1525 1526static struct platform_driver vpbe_display_driver = { 1527 .driver = { 1528 .name = VPBE_DISPLAY_DRIVER, 1529 .bus = &platform_bus_type, 1530 }, 1531 .probe = vpbe_display_probe, 1532 .remove = vpbe_display_remove, 1533}; 1534 1535module_platform_driver(vpbe_display_driver); 1536 1537MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller"); 1538MODULE_LICENSE("GPL"); 1539MODULE_AUTHOR("Texas Instruments"); 1540