1/* 2 * SuperH Video Output Unit (VOU) driver 3 * 4 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11#include <linux/dma-mapping.h> 12#include <linux/delay.h> 13#include <linux/errno.h> 14#include <linux/fs.h> 15#include <linux/i2c.h> 16#include <linux/init.h> 17#include <linux/interrupt.h> 18#include <linux/kernel.h> 19#include <linux/platform_device.h> 20#include <linux/pm_runtime.h> 21#include <linux/slab.h> 22#include <linux/videodev2.h> 23#include <linux/module.h> 24 25#include <media/sh_vou.h> 26#include <media/v4l2-common.h> 27#include <media/v4l2-device.h> 28#include <media/v4l2-ioctl.h> 29#include <media/v4l2-mediabus.h> 30#include <media/videobuf-dma-contig.h> 31 32/* Mirror addresses are not available for all registers */ 33#define VOUER 0 34#define VOUCR 4 35#define VOUSTR 8 36#define VOUVCR 0xc 37#define VOUISR 0x10 38#define VOUBCR 0x14 39#define VOUDPR 0x18 40#define VOUDSR 0x1c 41#define VOUVPR 0x20 42#define VOUIR 0x24 43#define VOUSRR 0x28 44#define VOUMSR 0x2c 45#define VOUHIR 0x30 46#define VOUDFR 0x34 47#define VOUAD1R 0x38 48#define VOUAD2R 0x3c 49#define VOUAIR 0x40 50#define VOUSWR 0x44 51#define VOURCR 0x48 52#define VOURPR 0x50 53 54enum sh_vou_status { 55 SH_VOU_IDLE, 56 SH_VOU_INITIALISING, 57 SH_VOU_RUNNING, 58}; 59 60#define VOU_MAX_IMAGE_WIDTH 720 61#define VOU_MAX_IMAGE_HEIGHT 576 62 63struct sh_vou_device { 64 struct v4l2_device v4l2_dev; 65 struct video_device *vdev; 66 atomic_t use_count; 67 struct sh_vou_pdata *pdata; 68 spinlock_t lock; 69 void __iomem *base; 70 /* State information */ 71 struct v4l2_pix_format pix; 72 struct v4l2_rect rect; 73 struct list_head queue; 74 v4l2_std_id std; 75 int pix_idx; 76 struct videobuf_buffer *active; 77 enum sh_vou_status status; 78 struct mutex fop_lock; 79}; 80 81struct sh_vou_file { 82 struct videobuf_queue vbq; 83}; 84 85/* Register access routines for sides A, B and mirror addresses */ 86static void sh_vou_reg_a_write(struct sh_vou_device *vou_dev, unsigned int reg, 87 u32 value) 88{ 89 __raw_writel(value, vou_dev->base + reg); 90} 91 92static void sh_vou_reg_ab_write(struct sh_vou_device *vou_dev, unsigned int reg, 93 u32 value) 94{ 95 __raw_writel(value, vou_dev->base + reg); 96 __raw_writel(value, vou_dev->base + reg + 0x1000); 97} 98 99static void sh_vou_reg_m_write(struct sh_vou_device *vou_dev, unsigned int reg, 100 u32 value) 101{ 102 __raw_writel(value, vou_dev->base + reg + 0x2000); 103} 104 105static u32 sh_vou_reg_a_read(struct sh_vou_device *vou_dev, unsigned int reg) 106{ 107 return __raw_readl(vou_dev->base + reg); 108} 109 110static void sh_vou_reg_a_set(struct sh_vou_device *vou_dev, unsigned int reg, 111 u32 value, u32 mask) 112{ 113 u32 old = __raw_readl(vou_dev->base + reg); 114 115 value = (value & mask) | (old & ~mask); 116 __raw_writel(value, vou_dev->base + reg); 117} 118 119static void sh_vou_reg_b_set(struct sh_vou_device *vou_dev, unsigned int reg, 120 u32 value, u32 mask) 121{ 122 sh_vou_reg_a_set(vou_dev, reg + 0x1000, value, mask); 123} 124 125static void sh_vou_reg_ab_set(struct sh_vou_device *vou_dev, unsigned int reg, 126 u32 value, u32 mask) 127{ 128 sh_vou_reg_a_set(vou_dev, reg, value, mask); 129 sh_vou_reg_b_set(vou_dev, reg, value, mask); 130} 131 132struct sh_vou_fmt { 133 u32 pfmt; 134 char *desc; 135 unsigned char bpp; 136 unsigned char rgb; 137 unsigned char yf; 138 unsigned char pkf; 139}; 140 141/* Further pixel formats can be added */ 142static struct sh_vou_fmt vou_fmt[] = { 143 { 144 .pfmt = V4L2_PIX_FMT_NV12, 145 .bpp = 12, 146 .desc = "YVU420 planar", 147 .yf = 0, 148 .rgb = 0, 149 }, 150 { 151 .pfmt = V4L2_PIX_FMT_NV16, 152 .bpp = 16, 153 .desc = "YVYU planar", 154 .yf = 1, 155 .rgb = 0, 156 }, 157 { 158 .pfmt = V4L2_PIX_FMT_RGB24, 159 .bpp = 24, 160 .desc = "RGB24", 161 .pkf = 2, 162 .rgb = 1, 163 }, 164 { 165 .pfmt = V4L2_PIX_FMT_RGB565, 166 .bpp = 16, 167 .desc = "RGB565", 168 .pkf = 3, 169 .rgb = 1, 170 }, 171 { 172 .pfmt = V4L2_PIX_FMT_RGB565X, 173 .bpp = 16, 174 .desc = "RGB565 byteswapped", 175 .pkf = 3, 176 .rgb = 1, 177 }, 178}; 179 180static void sh_vou_schedule_next(struct sh_vou_device *vou_dev, 181 struct videobuf_buffer *vb) 182{ 183 dma_addr_t addr1, addr2; 184 185 addr1 = videobuf_to_dma_contig(vb); 186 switch (vou_dev->pix.pixelformat) { 187 case V4L2_PIX_FMT_NV12: 188 case V4L2_PIX_FMT_NV16: 189 addr2 = addr1 + vou_dev->pix.width * vou_dev->pix.height; 190 break; 191 default: 192 addr2 = 0; 193 } 194 195 sh_vou_reg_m_write(vou_dev, VOUAD1R, addr1); 196 sh_vou_reg_m_write(vou_dev, VOUAD2R, addr2); 197} 198 199static void sh_vou_stream_start(struct sh_vou_device *vou_dev, 200 struct videobuf_buffer *vb) 201{ 202 unsigned int row_coeff; 203#ifdef __LITTLE_ENDIAN 204 u32 dataswap = 7; 205#else 206 u32 dataswap = 0; 207#endif 208 209 switch (vou_dev->pix.pixelformat) { 210 case V4L2_PIX_FMT_NV12: 211 case V4L2_PIX_FMT_NV16: 212 row_coeff = 1; 213 break; 214 case V4L2_PIX_FMT_RGB565: 215 dataswap ^= 1; 216 case V4L2_PIX_FMT_RGB565X: 217 row_coeff = 2; 218 break; 219 case V4L2_PIX_FMT_RGB24: 220 row_coeff = 3; 221 break; 222 } 223 224 sh_vou_reg_a_write(vou_dev, VOUSWR, dataswap); 225 sh_vou_reg_ab_write(vou_dev, VOUAIR, vou_dev->pix.width * row_coeff); 226 sh_vou_schedule_next(vou_dev, vb); 227} 228 229static void free_buffer(struct videobuf_queue *vq, struct videobuf_buffer *vb) 230{ 231 BUG_ON(in_interrupt()); 232 233 /* Wait until this buffer is no longer in STATE_QUEUED or STATE_ACTIVE */ 234 videobuf_waiton(vq, vb, 0, 0); 235 videobuf_dma_contig_free(vq, vb); 236 vb->state = VIDEOBUF_NEEDS_INIT; 237} 238 239/* Locking: caller holds fop_lock mutex */ 240static int sh_vou_buf_setup(struct videobuf_queue *vq, unsigned int *count, 241 unsigned int *size) 242{ 243 struct video_device *vdev = vq->priv_data; 244 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 245 246 *size = vou_fmt[vou_dev->pix_idx].bpp * vou_dev->pix.width * 247 vou_dev->pix.height / 8; 248 249 if (*count < 2) 250 *count = 2; 251 252 /* Taking into account maximum frame size, *count will stay >= 2 */ 253 if (PAGE_ALIGN(*size) * *count > 4 * 1024 * 1024) 254 *count = 4 * 1024 * 1024 / PAGE_ALIGN(*size); 255 256 dev_dbg(vq->dev, "%s(): count=%d, size=%d\n", __func__, *count, *size); 257 258 return 0; 259} 260 261/* Locking: caller holds fop_lock mutex */ 262static int sh_vou_buf_prepare(struct videobuf_queue *vq, 263 struct videobuf_buffer *vb, 264 enum v4l2_field field) 265{ 266 struct video_device *vdev = vq->priv_data; 267 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 268 struct v4l2_pix_format *pix = &vou_dev->pix; 269 int bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8; 270 int ret; 271 272 dev_dbg(vq->dev, "%s()\n", __func__); 273 274 if (vb->width != pix->width || 275 vb->height != pix->height || 276 vb->field != pix->field) { 277 vb->width = pix->width; 278 vb->height = pix->height; 279 vb->field = field; 280 if (vb->state != VIDEOBUF_NEEDS_INIT) 281 free_buffer(vq, vb); 282 } 283 284 vb->size = vb->height * bytes_per_line; 285 if (vb->baddr && vb->bsize < vb->size) { 286 /* User buffer too small */ 287 dev_warn(vq->dev, "User buffer too small: [%u] @ %lx\n", 288 vb->bsize, vb->baddr); 289 return -EINVAL; 290 } 291 292 if (vb->state == VIDEOBUF_NEEDS_INIT) { 293 ret = videobuf_iolock(vq, vb, NULL); 294 if (ret < 0) { 295 dev_warn(vq->dev, "IOLOCK buf-type %d: %d\n", 296 vb->memory, ret); 297 return ret; 298 } 299 vb->state = VIDEOBUF_PREPARED; 300 } 301 302 dev_dbg(vq->dev, 303 "%s(): fmt #%d, %u bytes per line, phys 0x%x, type %d, state %d\n", 304 __func__, vou_dev->pix_idx, bytes_per_line, 305 videobuf_to_dma_contig(vb), vb->memory, vb->state); 306 307 return 0; 308} 309 310/* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */ 311static void sh_vou_buf_queue(struct videobuf_queue *vq, 312 struct videobuf_buffer *vb) 313{ 314 struct video_device *vdev = vq->priv_data; 315 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 316 317 dev_dbg(vq->dev, "%s()\n", __func__); 318 319 vb->state = VIDEOBUF_QUEUED; 320 list_add_tail(&vb->queue, &vou_dev->queue); 321 322 if (vou_dev->status == SH_VOU_RUNNING) { 323 return; 324 } else if (!vou_dev->active) { 325 vou_dev->active = vb; 326 /* Start from side A: we use mirror addresses, so, set B */ 327 sh_vou_reg_a_write(vou_dev, VOURPR, 1); 328 dev_dbg(vq->dev, "%s: first buffer status 0x%x\n", __func__, 329 sh_vou_reg_a_read(vou_dev, VOUSTR)); 330 sh_vou_schedule_next(vou_dev, vb); 331 /* Only activate VOU after the second buffer */ 332 } else if (vou_dev->active->queue.next == &vb->queue) { 333 /* Second buffer - initialise register side B */ 334 sh_vou_reg_a_write(vou_dev, VOURPR, 0); 335 sh_vou_stream_start(vou_dev, vb); 336 337 /* Register side switching with frame VSYNC */ 338 sh_vou_reg_a_write(vou_dev, VOURCR, 5); 339 dev_dbg(vq->dev, "%s: second buffer status 0x%x\n", __func__, 340 sh_vou_reg_a_read(vou_dev, VOUSTR)); 341 342 /* Enable End-of-Frame (VSYNC) interrupts */ 343 sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004); 344 /* Two buffers on the queue - activate the hardware */ 345 346 vou_dev->status = SH_VOU_RUNNING; 347 sh_vou_reg_a_write(vou_dev, VOUER, 0x107); 348 } 349} 350 351static void sh_vou_buf_release(struct videobuf_queue *vq, 352 struct videobuf_buffer *vb) 353{ 354 struct video_device *vdev = vq->priv_data; 355 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 356 unsigned long flags; 357 358 dev_dbg(vq->dev, "%s()\n", __func__); 359 360 spin_lock_irqsave(&vou_dev->lock, flags); 361 362 if (vou_dev->active == vb) { 363 /* disable output */ 364 sh_vou_reg_a_set(vou_dev, VOUER, 0, 1); 365 /* ...but the current frame will complete */ 366 sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000); 367 vou_dev->active = NULL; 368 } 369 370 if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED)) { 371 vb->state = VIDEOBUF_ERROR; 372 list_del(&vb->queue); 373 } 374 375 spin_unlock_irqrestore(&vou_dev->lock, flags); 376 377 free_buffer(vq, vb); 378} 379 380static struct videobuf_queue_ops sh_vou_video_qops = { 381 .buf_setup = sh_vou_buf_setup, 382 .buf_prepare = sh_vou_buf_prepare, 383 .buf_queue = sh_vou_buf_queue, 384 .buf_release = sh_vou_buf_release, 385}; 386 387/* Video IOCTLs */ 388static int sh_vou_querycap(struct file *file, void *priv, 389 struct v4l2_capability *cap) 390{ 391 struct sh_vou_file *vou_file = priv; 392 393 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 394 395 strlcpy(cap->card, "SuperH VOU", sizeof(cap->card)); 396 cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; 397 return 0; 398} 399 400/* Enumerate formats, that the device can accept from the user */ 401static int sh_vou_enum_fmt_vid_out(struct file *file, void *priv, 402 struct v4l2_fmtdesc *fmt) 403{ 404 struct sh_vou_file *vou_file = priv; 405 406 if (fmt->index >= ARRAY_SIZE(vou_fmt)) 407 return -EINVAL; 408 409 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 410 411 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 412 strlcpy(fmt->description, vou_fmt[fmt->index].desc, 413 sizeof(fmt->description)); 414 fmt->pixelformat = vou_fmt[fmt->index].pfmt; 415 416 return 0; 417} 418 419static int sh_vou_g_fmt_vid_out(struct file *file, void *priv, 420 struct v4l2_format *fmt) 421{ 422 struct video_device *vdev = video_devdata(file); 423 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 424 425 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); 426 427 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 428 fmt->fmt.pix = vou_dev->pix; 429 430 return 0; 431} 432 433static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4}; 434static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1}; 435static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3}; 436static const unsigned char vou_scale_v_num[] = {1, 2, 4}; 437static const unsigned char vou_scale_v_den[] = {1, 1, 1}; 438static const unsigned char vou_scale_v_fld[] = {0, 1}; 439 440static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev, 441 int pix_idx, int w_idx, int h_idx) 442{ 443 struct sh_vou_fmt *fmt = vou_fmt + pix_idx; 444 unsigned int black_left, black_top, width_max, height_max, 445 frame_in_height, frame_out_height, frame_out_top; 446 struct v4l2_rect *rect = &vou_dev->rect; 447 struct v4l2_pix_format *pix = &vou_dev->pix; 448 u32 vouvcr = 0, dsr_h, dsr_v; 449 450 if (vou_dev->std & V4L2_STD_525_60) { 451 width_max = 858; 452 height_max = 262; 453 } else { 454 width_max = 864; 455 height_max = 312; 456 } 457 458 frame_in_height = pix->height / 2; 459 frame_out_height = rect->height / 2; 460 frame_out_top = rect->top / 2; 461 462 /* 463 * Cropping scheme: max useful image is 720x480, and the total video 464 * area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts 465 * sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock, 466 * of which the first 33 / 25 clocks HSYNC must be held active. This 467 * has to be configured in CR[HW]. 1 pixel equals 2 clock periods. 468 * This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives 469 * exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area, 470 * beyond DSR, specified on the left and top by the VPR register "black 471 * pixels" and out-of-image area (DPR) "background pixels." We fix VPR 472 * at 138 / 144 : 20, because that's the HSYNC timing, that our first 473 * client requires, and that's exactly what leaves us 720 pixels for the 474 * image; we leave VPR[VVP] at default 20 for now, because the client 475 * doesn't seem to have any special requirements for it. Otherwise we 476 * could also set it to max - 240 = 22 / 72. Thus VPR depends only on 477 * the selected standard, and DPR and DSR are selected according to 478 * cropping. Q: how does the client detect the first valid line? Does 479 * HSYNC stay inactive during invalid (black) lines? 480 */ 481 black_left = width_max - VOU_MAX_IMAGE_WIDTH; 482 black_top = 20; 483 484 dsr_h = rect->width + rect->left; 485 dsr_v = frame_out_height + frame_out_top; 486 487 dev_dbg(vou_dev->v4l2_dev.dev, 488 "image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n", 489 pix->width, frame_in_height, black_left, black_top, 490 rect->left, frame_out_top, dsr_h, dsr_v); 491 492 /* VOUISR height - half of a frame height in frame mode */ 493 sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height); 494 sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top); 495 sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top); 496 sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v); 497 498 /* 499 * if necessary, we could set VOUHIR to 500 * max(black_left + dsr_h, width_max) here 501 */ 502 503 if (w_idx) 504 vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4); 505 if (h_idx) 506 vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1]; 507 508 dev_dbg(vou_dev->v4l2_dev.dev, "%s: scaling 0x%x\n", fmt->desc, vouvcr); 509 510 /* To produce a colour bar for testing set bit 23 of VOUVCR */ 511 sh_vou_reg_ab_write(vou_dev, VOUVCR, vouvcr); 512 sh_vou_reg_ab_write(vou_dev, VOUDFR, 513 fmt->pkf | (fmt->yf << 8) | (fmt->rgb << 16)); 514} 515 516struct sh_vou_geometry { 517 struct v4l2_rect output; 518 unsigned int in_width; 519 unsigned int in_height; 520 int scale_idx_h; 521 int scale_idx_v; 522}; 523 524/* 525 * Find input geometry, that we can use to produce output, closest to the 526 * requested rectangle, using VOU scaling 527 */ 528static void vou_adjust_input(struct sh_vou_geometry *geo, v4l2_std_id std) 529{ 530 /* The compiler cannot know, that best and idx will indeed be set */ 531 unsigned int best_err = UINT_MAX, best = 0, img_height_max; 532 int i, idx = 0; 533 534 if (std & V4L2_STD_525_60) 535 img_height_max = 480; 536 else 537 img_height_max = 576; 538 539 /* Image width must be a multiple of 4 */ 540 v4l_bound_align_image(&geo->in_width, 0, VOU_MAX_IMAGE_WIDTH, 2, 541 &geo->in_height, 0, img_height_max, 1, 0); 542 543 /* Select scales to come as close as possible to the output image */ 544 for (i = ARRAY_SIZE(vou_scale_h_num) - 1; i >= 0; i--) { 545 unsigned int err; 546 unsigned int found = geo->output.width * vou_scale_h_den[i] / 547 vou_scale_h_num[i]; 548 549 if (found > VOU_MAX_IMAGE_WIDTH) 550 /* scales increase */ 551 break; 552 553 err = abs(found - geo->in_width); 554 if (err < best_err) { 555 best_err = err; 556 idx = i; 557 best = found; 558 } 559 if (!err) 560 break; 561 } 562 563 geo->in_width = best; 564 geo->scale_idx_h = idx; 565 566 best_err = UINT_MAX; 567 568 /* This loop can be replaced with one division */ 569 for (i = ARRAY_SIZE(vou_scale_v_num) - 1; i >= 0; i--) { 570 unsigned int err; 571 unsigned int found = geo->output.height * vou_scale_v_den[i] / 572 vou_scale_v_num[i]; 573 574 if (found > img_height_max) 575 /* scales increase */ 576 break; 577 578 err = abs(found - geo->in_height); 579 if (err < best_err) { 580 best_err = err; 581 idx = i; 582 best = found; 583 } 584 if (!err) 585 break; 586 } 587 588 geo->in_height = best; 589 geo->scale_idx_v = idx; 590} 591 592/* 593 * Find output geometry, that we can produce, using VOU scaling, closest to 594 * the requested rectangle 595 */ 596static void vou_adjust_output(struct sh_vou_geometry *geo, v4l2_std_id std) 597{ 598 unsigned int best_err = UINT_MAX, best, width_max, height_max, 599 img_height_max; 600 int i, idx; 601 602 if (std & V4L2_STD_525_60) { 603 width_max = 858; 604 height_max = 262 * 2; 605 img_height_max = 480; 606 } else { 607 width_max = 864; 608 height_max = 312 * 2; 609 img_height_max = 576; 610 } 611 612 /* Select scales to come as close as possible to the output image */ 613 for (i = 0; i < ARRAY_SIZE(vou_scale_h_num); i++) { 614 unsigned int err; 615 unsigned int found = geo->in_width * vou_scale_h_num[i] / 616 vou_scale_h_den[i]; 617 618 if (found > VOU_MAX_IMAGE_WIDTH) 619 /* scales increase */ 620 break; 621 622 err = abs(found - geo->output.width); 623 if (err < best_err) { 624 best_err = err; 625 idx = i; 626 best = found; 627 } 628 if (!err) 629 break; 630 } 631 632 geo->output.width = best; 633 geo->scale_idx_h = idx; 634 if (geo->output.left + best > width_max) 635 geo->output.left = width_max - best; 636 637 pr_debug("%s(): W %u * %u/%u = %u\n", __func__, geo->in_width, 638 vou_scale_h_num[idx], vou_scale_h_den[idx], best); 639 640 best_err = UINT_MAX; 641 642 /* This loop can be replaced with one division */ 643 for (i = 0; i < ARRAY_SIZE(vou_scale_v_num); i++) { 644 unsigned int err; 645 unsigned int found = geo->in_height * vou_scale_v_num[i] / 646 vou_scale_v_den[i]; 647 648 if (found > img_height_max) 649 /* scales increase */ 650 break; 651 652 err = abs(found - geo->output.height); 653 if (err < best_err) { 654 best_err = err; 655 idx = i; 656 best = found; 657 } 658 if (!err) 659 break; 660 } 661 662 geo->output.height = best; 663 geo->scale_idx_v = idx; 664 if (geo->output.top + best > height_max) 665 geo->output.top = height_max - best; 666 667 pr_debug("%s(): H %u * %u/%u = %u\n", __func__, geo->in_height, 668 vou_scale_v_num[idx], vou_scale_v_den[idx], best); 669} 670 671static int sh_vou_s_fmt_vid_out(struct file *file, void *priv, 672 struct v4l2_format *fmt) 673{ 674 struct video_device *vdev = video_devdata(file); 675 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 676 struct v4l2_pix_format *pix = &fmt->fmt.pix; 677 unsigned int img_height_max; 678 int pix_idx; 679 struct sh_vou_geometry geo; 680 struct v4l2_mbus_framefmt mbfmt = { 681 /* Revisit: is this the correct code? */ 682 .code = V4L2_MBUS_FMT_YUYV8_2X8, 683 .field = V4L2_FIELD_INTERLACED, 684 .colorspace = V4L2_COLORSPACE_SMPTE170M, 685 }; 686 int ret; 687 688 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__, 689 vou_dev->rect.width, vou_dev->rect.height, 690 pix->width, pix->height); 691 692 if (pix->field == V4L2_FIELD_ANY) 693 pix->field = V4L2_FIELD_NONE; 694 695 if (fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT || 696 pix->field != V4L2_FIELD_NONE) 697 return -EINVAL; 698 699 for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++) 700 if (vou_fmt[pix_idx].pfmt == pix->pixelformat) 701 break; 702 703 if (pix_idx == ARRAY_SIZE(vou_fmt)) 704 return -EINVAL; 705 706 if (vou_dev->std & V4L2_STD_525_60) 707 img_height_max = 480; 708 else 709 img_height_max = 576; 710 711 /* Image width must be a multiple of 4 */ 712 v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 2, 713 &pix->height, 0, img_height_max, 1, 0); 714 715 geo.in_width = pix->width; 716 geo.in_height = pix->height; 717 geo.output = vou_dev->rect; 718 719 vou_adjust_output(&geo, vou_dev->std); 720 721 mbfmt.width = geo.output.width; 722 mbfmt.height = geo.output.height; 723 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, 724 s_mbus_fmt, &mbfmt); 725 /* Must be implemented, so, don't check for -ENOIOCTLCMD */ 726 if (ret < 0) 727 return ret; 728 729 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__, 730 geo.output.width, geo.output.height, mbfmt.width, mbfmt.height); 731 732 /* Sanity checks */ 733 if ((unsigned)mbfmt.width > VOU_MAX_IMAGE_WIDTH || 734 (unsigned)mbfmt.height > img_height_max || 735 mbfmt.code != V4L2_MBUS_FMT_YUYV8_2X8) 736 return -EIO; 737 738 if (mbfmt.width != geo.output.width || 739 mbfmt.height != geo.output.height) { 740 geo.output.width = mbfmt.width; 741 geo.output.height = mbfmt.height; 742 743 vou_adjust_input(&geo, vou_dev->std); 744 } 745 746 /* We tried to preserve output rectangle, but it could have changed */ 747 vou_dev->rect = geo.output; 748 pix->width = geo.in_width; 749 pix->height = geo.in_height; 750 751 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u\n", __func__, 752 pix->width, pix->height); 753 754 vou_dev->pix_idx = pix_idx; 755 756 vou_dev->pix = *pix; 757 758 sh_vou_configure_geometry(vou_dev, pix_idx, 759 geo.scale_idx_h, geo.scale_idx_v); 760 761 return 0; 762} 763 764static int sh_vou_try_fmt_vid_out(struct file *file, void *priv, 765 struct v4l2_format *fmt) 766{ 767 struct sh_vou_file *vou_file = priv; 768 struct v4l2_pix_format *pix = &fmt->fmt.pix; 769 int i; 770 771 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 772 773 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 774 pix->field = V4L2_FIELD_NONE; 775 776 v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 1, 777 &pix->height, 0, VOU_MAX_IMAGE_HEIGHT, 1, 0); 778 779 for (i = 0; ARRAY_SIZE(vou_fmt); i++) 780 if (vou_fmt[i].pfmt == pix->pixelformat) 781 return 0; 782 783 pix->pixelformat = vou_fmt[0].pfmt; 784 785 return 0; 786} 787 788static int sh_vou_reqbufs(struct file *file, void *priv, 789 struct v4l2_requestbuffers *req) 790{ 791 struct sh_vou_file *vou_file = priv; 792 793 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 794 795 if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 796 return -EINVAL; 797 798 return videobuf_reqbufs(&vou_file->vbq, req); 799} 800 801static int sh_vou_querybuf(struct file *file, void *priv, 802 struct v4l2_buffer *b) 803{ 804 struct sh_vou_file *vou_file = priv; 805 806 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 807 808 return videobuf_querybuf(&vou_file->vbq, b); 809} 810 811static int sh_vou_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) 812{ 813 struct sh_vou_file *vou_file = priv; 814 815 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 816 817 return videobuf_qbuf(&vou_file->vbq, b); 818} 819 820static int sh_vou_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) 821{ 822 struct sh_vou_file *vou_file = priv; 823 824 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 825 826 return videobuf_dqbuf(&vou_file->vbq, b, file->f_flags & O_NONBLOCK); 827} 828 829static int sh_vou_streamon(struct file *file, void *priv, 830 enum v4l2_buf_type buftype) 831{ 832 struct video_device *vdev = video_devdata(file); 833 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 834 struct sh_vou_file *vou_file = priv; 835 int ret; 836 837 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 838 839 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, 840 video, s_stream, 1); 841 if (ret < 0 && ret != -ENOIOCTLCMD) 842 return ret; 843 844 /* This calls our .buf_queue() (== sh_vou_buf_queue) */ 845 return videobuf_streamon(&vou_file->vbq); 846} 847 848static int sh_vou_streamoff(struct file *file, void *priv, 849 enum v4l2_buf_type buftype) 850{ 851 struct video_device *vdev = video_devdata(file); 852 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 853 struct sh_vou_file *vou_file = priv; 854 855 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 856 857 /* 858 * This calls buf_release from host driver's videobuf_queue_ops for all 859 * remaining buffers. When the last buffer is freed, stop streaming 860 */ 861 videobuf_streamoff(&vou_file->vbq); 862 v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, s_stream, 0); 863 864 return 0; 865} 866 867static u32 sh_vou_ntsc_mode(enum sh_vou_bus_fmt bus_fmt) 868{ 869 switch (bus_fmt) { 870 default: 871 pr_warning("%s(): Invalid bus-format code %d, using default 8-bit\n", 872 __func__, bus_fmt); 873 case SH_VOU_BUS_8BIT: 874 return 1; 875 case SH_VOU_BUS_16BIT: 876 return 0; 877 case SH_VOU_BUS_BT656: 878 return 3; 879 } 880} 881 882static int sh_vou_s_std(struct file *file, void *priv, v4l2_std_id *std_id) 883{ 884 struct video_device *vdev = video_devdata(file); 885 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 886 int ret; 887 888 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): 0x%llx\n", __func__, *std_id); 889 890 if (*std_id & ~vdev->tvnorms) 891 return -EINVAL; 892 893 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, 894 s_std_output, *std_id); 895 /* Shall we continue, if the subdev doesn't support .s_std_output()? */ 896 if (ret < 0 && ret != -ENOIOCTLCMD) 897 return ret; 898 899 if (*std_id & V4L2_STD_525_60) 900 sh_vou_reg_ab_set(vou_dev, VOUCR, 901 sh_vou_ntsc_mode(vou_dev->pdata->bus_fmt) << 29, 7 << 29); 902 else 903 sh_vou_reg_ab_set(vou_dev, VOUCR, 5 << 29, 7 << 29); 904 905 vou_dev->std = *std_id; 906 907 return 0; 908} 909 910static int sh_vou_g_std(struct file *file, void *priv, v4l2_std_id *std) 911{ 912 struct video_device *vdev = video_devdata(file); 913 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 914 915 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); 916 917 *std = vou_dev->std; 918 919 return 0; 920} 921 922static int sh_vou_g_crop(struct file *file, void *fh, struct v4l2_crop *a) 923{ 924 struct video_device *vdev = video_devdata(file); 925 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 926 927 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); 928 929 a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 930 a->c = vou_dev->rect; 931 932 return 0; 933} 934 935/* Assume a dull encoder, do all the work ourselves. */ 936static int sh_vou_s_crop(struct file *file, void *fh, struct v4l2_crop *a) 937{ 938 struct video_device *vdev = video_devdata(file); 939 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 940 struct v4l2_rect *rect = &a->c; 941 struct v4l2_crop sd_crop = {.type = V4L2_BUF_TYPE_VIDEO_OUTPUT}; 942 struct v4l2_pix_format *pix = &vou_dev->pix; 943 struct sh_vou_geometry geo; 944 struct v4l2_mbus_framefmt mbfmt = { 945 /* Revisit: is this the correct code? */ 946 .code = V4L2_MBUS_FMT_YUYV8_2X8, 947 .field = V4L2_FIELD_INTERLACED, 948 .colorspace = V4L2_COLORSPACE_SMPTE170M, 949 }; 950 unsigned int img_height_max; 951 int ret; 952 953 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u@%u:%u\n", __func__, 954 rect->width, rect->height, rect->left, rect->top); 955 956 if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 957 return -EINVAL; 958 959 if (vou_dev->std & V4L2_STD_525_60) 960 img_height_max = 480; 961 else 962 img_height_max = 576; 963 964 v4l_bound_align_image(&rect->width, 0, VOU_MAX_IMAGE_WIDTH, 1, 965 &rect->height, 0, img_height_max, 1, 0); 966 967 if (rect->width + rect->left > VOU_MAX_IMAGE_WIDTH) 968 rect->left = VOU_MAX_IMAGE_WIDTH - rect->width; 969 970 if (rect->height + rect->top > img_height_max) 971 rect->top = img_height_max - rect->height; 972 973 geo.output = *rect; 974 geo.in_width = pix->width; 975 geo.in_height = pix->height; 976 977 /* Configure the encoder one-to-one, position at 0, ignore errors */ 978 sd_crop.c.width = geo.output.width; 979 sd_crop.c.height = geo.output.height; 980 /* 981 * We first issue a S_CROP, so that the subsequent S_FMT delivers the 982 * final encoder configuration. 983 */ 984 v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, 985 s_crop, &sd_crop); 986 mbfmt.width = geo.output.width; 987 mbfmt.height = geo.output.height; 988 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, 989 s_mbus_fmt, &mbfmt); 990 /* Must be implemented, so, don't check for -ENOIOCTLCMD */ 991 if (ret < 0) 992 return ret; 993 994 /* Sanity checks */ 995 if ((unsigned)mbfmt.width > VOU_MAX_IMAGE_WIDTH || 996 (unsigned)mbfmt.height > img_height_max || 997 mbfmt.code != V4L2_MBUS_FMT_YUYV8_2X8) 998 return -EIO; 999 1000 geo.output.width = mbfmt.width; 1001 geo.output.height = mbfmt.height; 1002 1003 /* 1004 * No down-scaling. According to the API, current call has precedence: 1005 * http://v4l2spec.bytesex.org/spec/x1904.htm#AEN1954 paragraph two. 1006 */ 1007 vou_adjust_input(&geo, vou_dev->std); 1008 1009 /* We tried to preserve output rectangle, but it could have changed */ 1010 vou_dev->rect = geo.output; 1011 pix->width = geo.in_width; 1012 pix->height = geo.in_height; 1013 1014 sh_vou_configure_geometry(vou_dev, vou_dev->pix_idx, 1015 geo.scale_idx_h, geo.scale_idx_v); 1016 1017 return 0; 1018} 1019 1020/* 1021 * Total field: NTSC 858 x 2 * 262/263, PAL 864 x 2 * 312/313, default rectangle 1022 * is the initial register values, height takes the interlaced format into 1023 * account. The actual image can only go up to 720 x 2 * 240, So, VOUVPR can 1024 * actually only meaningfully contain values <= 720 and <= 240 respectively, and 1025 * not <= 864 and <= 312. 1026 */ 1027static int sh_vou_cropcap(struct file *file, void *priv, 1028 struct v4l2_cropcap *a) 1029{ 1030 struct sh_vou_file *vou_file = priv; 1031 1032 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 1033 1034 a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 1035 a->bounds.left = 0; 1036 a->bounds.top = 0; 1037 a->bounds.width = VOU_MAX_IMAGE_WIDTH; 1038 a->bounds.height = VOU_MAX_IMAGE_HEIGHT; 1039 /* Default = max, set VOUDPR = 0, which is not hardware default */ 1040 a->defrect.left = 0; 1041 a->defrect.top = 0; 1042 a->defrect.width = VOU_MAX_IMAGE_WIDTH; 1043 a->defrect.height = VOU_MAX_IMAGE_HEIGHT; 1044 a->pixelaspect.numerator = 1; 1045 a->pixelaspect.denominator = 1; 1046 1047 return 0; 1048} 1049 1050static irqreturn_t sh_vou_isr(int irq, void *dev_id) 1051{ 1052 struct sh_vou_device *vou_dev = dev_id; 1053 static unsigned long j; 1054 struct videobuf_buffer *vb; 1055 static int cnt; 1056 static int side; 1057 u32 irq_status = sh_vou_reg_a_read(vou_dev, VOUIR), masked; 1058 u32 vou_status = sh_vou_reg_a_read(vou_dev, VOUSTR); 1059 1060 if (!(irq_status & 0x300)) { 1061 if (printk_timed_ratelimit(&j, 500)) 1062 dev_warn(vou_dev->v4l2_dev.dev, "IRQ status 0x%x!\n", 1063 irq_status); 1064 return IRQ_NONE; 1065 } 1066 1067 spin_lock(&vou_dev->lock); 1068 if (!vou_dev->active || list_empty(&vou_dev->queue)) { 1069 if (printk_timed_ratelimit(&j, 500)) 1070 dev_warn(vou_dev->v4l2_dev.dev, 1071 "IRQ without active buffer: %x!\n", irq_status); 1072 /* Just ack: buf_release will disable further interrupts */ 1073 sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x300); 1074 spin_unlock(&vou_dev->lock); 1075 return IRQ_HANDLED; 1076 } 1077 1078 masked = ~(0x300 & irq_status) & irq_status & 0x30304; 1079 dev_dbg(vou_dev->v4l2_dev.dev, 1080 "IRQ status 0x%x -> 0x%x, VOU status 0x%x, cnt %d\n", 1081 irq_status, masked, vou_status, cnt); 1082 1083 cnt++; 1084 side = vou_status & 0x10000; 1085 1086 /* Clear only set interrupts */ 1087 sh_vou_reg_a_write(vou_dev, VOUIR, masked); 1088 1089 vb = vou_dev->active; 1090 list_del(&vb->queue); 1091 1092 vb->state = VIDEOBUF_DONE; 1093 do_gettimeofday(&vb->ts); 1094 vb->field_count++; 1095 wake_up(&vb->done); 1096 1097 if (list_empty(&vou_dev->queue)) { 1098 /* Stop VOU */ 1099 dev_dbg(vou_dev->v4l2_dev.dev, "%s: queue empty after %d\n", 1100 __func__, cnt); 1101 sh_vou_reg_a_set(vou_dev, VOUER, 0, 1); 1102 vou_dev->active = NULL; 1103 vou_dev->status = SH_VOU_INITIALISING; 1104 /* Disable End-of-Frame (VSYNC) interrupts */ 1105 sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000); 1106 spin_unlock(&vou_dev->lock); 1107 return IRQ_HANDLED; 1108 } 1109 1110 vou_dev->active = list_entry(vou_dev->queue.next, 1111 struct videobuf_buffer, queue); 1112 1113 if (vou_dev->active->queue.next != &vou_dev->queue) { 1114 struct videobuf_buffer *new = list_entry(vou_dev->active->queue.next, 1115 struct videobuf_buffer, queue); 1116 sh_vou_schedule_next(vou_dev, new); 1117 } 1118 1119 spin_unlock(&vou_dev->lock); 1120 1121 return IRQ_HANDLED; 1122} 1123 1124static int sh_vou_hw_init(struct sh_vou_device *vou_dev) 1125{ 1126 struct sh_vou_pdata *pdata = vou_dev->pdata; 1127 u32 voucr = sh_vou_ntsc_mode(pdata->bus_fmt) << 29; 1128 int i = 100; 1129 1130 /* Disable all IRQs */ 1131 sh_vou_reg_a_write(vou_dev, VOUIR, 0); 1132 1133 /* Reset VOU interfaces - registers unaffected */ 1134 sh_vou_reg_a_write(vou_dev, VOUSRR, 0x101); 1135 while (--i && (sh_vou_reg_a_read(vou_dev, VOUSRR) & 0x101)) 1136 udelay(1); 1137 1138 if (!i) 1139 return -ETIMEDOUT; 1140 1141 dev_dbg(vou_dev->v4l2_dev.dev, "Reset took %dus\n", 100 - i); 1142 1143 if (pdata->flags & SH_VOU_PCLK_FALLING) 1144 voucr |= 1 << 28; 1145 if (pdata->flags & SH_VOU_HSYNC_LOW) 1146 voucr |= 1 << 27; 1147 if (pdata->flags & SH_VOU_VSYNC_LOW) 1148 voucr |= 1 << 26; 1149 sh_vou_reg_ab_set(vou_dev, VOUCR, voucr, 0xfc000000); 1150 1151 /* Manual register side switching at first */ 1152 sh_vou_reg_a_write(vou_dev, VOURCR, 4); 1153 /* Default - fixed HSYNC length, can be made configurable is required */ 1154 sh_vou_reg_ab_write(vou_dev, VOUMSR, 0x800000); 1155 1156 return 0; 1157} 1158 1159/* File operations */ 1160static int sh_vou_open(struct file *file) 1161{ 1162 struct video_device *vdev = video_devdata(file); 1163 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 1164 struct sh_vou_file *vou_file = kzalloc(sizeof(struct sh_vou_file), 1165 GFP_KERNEL); 1166 1167 if (!vou_file) 1168 return -ENOMEM; 1169 1170 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__); 1171 1172 file->private_data = vou_file; 1173 1174 if (atomic_inc_return(&vou_dev->use_count) == 1) { 1175 int ret; 1176 /* First open */ 1177 vou_dev->status = SH_VOU_INITIALISING; 1178 pm_runtime_get_sync(vdev->v4l2_dev->dev); 1179 ret = sh_vou_hw_init(vou_dev); 1180 if (ret < 0) { 1181 atomic_dec(&vou_dev->use_count); 1182 pm_runtime_put(vdev->v4l2_dev->dev); 1183 vou_dev->status = SH_VOU_IDLE; 1184 return ret; 1185 } 1186 } 1187 1188 videobuf_queue_dma_contig_init(&vou_file->vbq, &sh_vou_video_qops, 1189 vou_dev->v4l2_dev.dev, &vou_dev->lock, 1190 V4L2_BUF_TYPE_VIDEO_OUTPUT, 1191 V4L2_FIELD_NONE, 1192 sizeof(struct videobuf_buffer), vdev, 1193 &vou_dev->fop_lock); 1194 1195 return 0; 1196} 1197 1198static int sh_vou_release(struct file *file) 1199{ 1200 struct video_device *vdev = video_devdata(file); 1201 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 1202 struct sh_vou_file *vou_file = file->private_data; 1203 1204 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 1205 1206 if (!atomic_dec_return(&vou_dev->use_count)) { 1207 /* Last close */ 1208 vou_dev->status = SH_VOU_IDLE; 1209 sh_vou_reg_a_set(vou_dev, VOUER, 0, 0x101); 1210 pm_runtime_put(vdev->v4l2_dev->dev); 1211 } 1212 1213 file->private_data = NULL; 1214 kfree(vou_file); 1215 1216 return 0; 1217} 1218 1219static int sh_vou_mmap(struct file *file, struct vm_area_struct *vma) 1220{ 1221 struct sh_vou_file *vou_file = file->private_data; 1222 1223 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 1224 1225 return videobuf_mmap_mapper(&vou_file->vbq, vma); 1226} 1227 1228static unsigned int sh_vou_poll(struct file *file, poll_table *wait) 1229{ 1230 struct sh_vou_file *vou_file = file->private_data; 1231 1232 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__); 1233 1234 return videobuf_poll_stream(file, &vou_file->vbq, wait); 1235} 1236 1237static int sh_vou_g_chip_ident(struct file *file, void *fh, 1238 struct v4l2_dbg_chip_ident *id) 1239{ 1240 struct video_device *vdev = video_devdata(file); 1241 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 1242 1243 return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, g_chip_ident, id); 1244} 1245 1246#ifdef CONFIG_VIDEO_ADV_DEBUG 1247static int sh_vou_g_register(struct file *file, void *fh, 1248 struct v4l2_dbg_register *reg) 1249{ 1250 struct video_device *vdev = video_devdata(file); 1251 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 1252 1253 return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, g_register, reg); 1254} 1255 1256static int sh_vou_s_register(struct file *file, void *fh, 1257 struct v4l2_dbg_register *reg) 1258{ 1259 struct video_device *vdev = video_devdata(file); 1260 struct sh_vou_device *vou_dev = video_get_drvdata(vdev); 1261 1262 return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, s_register, reg); 1263} 1264#endif 1265 1266/* sh_vou display ioctl operations */ 1267static const struct v4l2_ioctl_ops sh_vou_ioctl_ops = { 1268 .vidioc_querycap = sh_vou_querycap, 1269 .vidioc_enum_fmt_vid_out = sh_vou_enum_fmt_vid_out, 1270 .vidioc_g_fmt_vid_out = sh_vou_g_fmt_vid_out, 1271 .vidioc_s_fmt_vid_out = sh_vou_s_fmt_vid_out, 1272 .vidioc_try_fmt_vid_out = sh_vou_try_fmt_vid_out, 1273 .vidioc_reqbufs = sh_vou_reqbufs, 1274 .vidioc_querybuf = sh_vou_querybuf, 1275 .vidioc_qbuf = sh_vou_qbuf, 1276 .vidioc_dqbuf = sh_vou_dqbuf, 1277 .vidioc_streamon = sh_vou_streamon, 1278 .vidioc_streamoff = sh_vou_streamoff, 1279 .vidioc_s_std = sh_vou_s_std, 1280 .vidioc_g_std = sh_vou_g_std, 1281 .vidioc_cropcap = sh_vou_cropcap, 1282 .vidioc_g_crop = sh_vou_g_crop, 1283 .vidioc_s_crop = sh_vou_s_crop, 1284 .vidioc_g_chip_ident = sh_vou_g_chip_ident, 1285#ifdef CONFIG_VIDEO_ADV_DEBUG 1286 .vidioc_g_register = sh_vou_g_register, 1287 .vidioc_s_register = sh_vou_s_register, 1288#endif 1289}; 1290 1291static const struct v4l2_file_operations sh_vou_fops = { 1292 .owner = THIS_MODULE, 1293 .open = sh_vou_open, 1294 .release = sh_vou_release, 1295 .unlocked_ioctl = video_ioctl2, 1296 .mmap = sh_vou_mmap, 1297 .poll = sh_vou_poll, 1298}; 1299 1300static const struct video_device sh_vou_video_template = { 1301 .name = "sh_vou", 1302 .fops = &sh_vou_fops, 1303 .ioctl_ops = &sh_vou_ioctl_ops, 1304 .tvnorms = V4L2_STD_525_60, /* PAL only supported in 8-bit non-bt656 mode */ 1305 .current_norm = V4L2_STD_NTSC_M, 1306}; 1307 1308static int __devinit sh_vou_probe(struct platform_device *pdev) 1309{ 1310 struct sh_vou_pdata *vou_pdata = pdev->dev.platform_data; 1311 struct v4l2_rect *rect; 1312 struct v4l2_pix_format *pix; 1313 struct i2c_adapter *i2c_adap; 1314 struct video_device *vdev; 1315 struct sh_vou_device *vou_dev; 1316 struct resource *reg_res, *region; 1317 struct v4l2_subdev *subdev; 1318 int irq, ret; 1319 1320 reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1321 irq = platform_get_irq(pdev, 0); 1322 1323 if (!vou_pdata || !reg_res || irq <= 0) { 1324 dev_err(&pdev->dev, "Insufficient VOU platform information.\n"); 1325 return -ENODEV; 1326 } 1327 1328 vou_dev = kzalloc(sizeof(*vou_dev), GFP_KERNEL); 1329 if (!vou_dev) 1330 return -ENOMEM; 1331 1332 INIT_LIST_HEAD(&vou_dev->queue); 1333 spin_lock_init(&vou_dev->lock); 1334 mutex_init(&vou_dev->fop_lock); 1335 atomic_set(&vou_dev->use_count, 0); 1336 vou_dev->pdata = vou_pdata; 1337 vou_dev->status = SH_VOU_IDLE; 1338 1339 rect = &vou_dev->rect; 1340 pix = &vou_dev->pix; 1341 1342 /* Fill in defaults */ 1343 vou_dev->std = sh_vou_video_template.current_norm; 1344 rect->left = 0; 1345 rect->top = 0; 1346 rect->width = VOU_MAX_IMAGE_WIDTH; 1347 rect->height = 480; 1348 pix->width = VOU_MAX_IMAGE_WIDTH; 1349 pix->height = 480; 1350 pix->pixelformat = V4L2_PIX_FMT_YVYU; 1351 pix->field = V4L2_FIELD_NONE; 1352 pix->bytesperline = VOU_MAX_IMAGE_WIDTH * 2; 1353 pix->sizeimage = VOU_MAX_IMAGE_WIDTH * 2 * 480; 1354 pix->colorspace = V4L2_COLORSPACE_SMPTE170M; 1355 1356 region = request_mem_region(reg_res->start, resource_size(reg_res), 1357 pdev->name); 1358 if (!region) { 1359 dev_err(&pdev->dev, "VOU region already claimed\n"); 1360 ret = -EBUSY; 1361 goto ereqmemreg; 1362 } 1363 1364 vou_dev->base = ioremap(reg_res->start, resource_size(reg_res)); 1365 if (!vou_dev->base) { 1366 ret = -ENOMEM; 1367 goto emap; 1368 } 1369 1370 ret = request_irq(irq, sh_vou_isr, 0, "vou", vou_dev); 1371 if (ret < 0) 1372 goto ereqirq; 1373 1374 ret = v4l2_device_register(&pdev->dev, &vou_dev->v4l2_dev); 1375 if (ret < 0) { 1376 dev_err(&pdev->dev, "Error registering v4l2 device\n"); 1377 goto ev4l2devreg; 1378 } 1379 1380 /* Allocate memory for video device */ 1381 vdev = video_device_alloc(); 1382 if (vdev == NULL) { 1383 ret = -ENOMEM; 1384 goto evdevalloc; 1385 } 1386 1387 *vdev = sh_vou_video_template; 1388 if (vou_pdata->bus_fmt == SH_VOU_BUS_8BIT) 1389 vdev->tvnorms |= V4L2_STD_PAL; 1390 vdev->v4l2_dev = &vou_dev->v4l2_dev; 1391 vdev->release = video_device_release; 1392 vdev->lock = &vou_dev->fop_lock; 1393 1394 vou_dev->vdev = vdev; 1395 video_set_drvdata(vdev, vou_dev); 1396 1397 pm_runtime_enable(&pdev->dev); 1398 pm_runtime_resume(&pdev->dev); 1399 1400 i2c_adap = i2c_get_adapter(vou_pdata->i2c_adap); 1401 if (!i2c_adap) { 1402 ret = -ENODEV; 1403 goto ei2cgadap; 1404 } 1405 1406 ret = sh_vou_hw_init(vou_dev); 1407 if (ret < 0) 1408 goto ereset; 1409 1410 subdev = v4l2_i2c_new_subdev_board(&vou_dev->v4l2_dev, i2c_adap, 1411 vou_pdata->board_info, NULL); 1412 if (!subdev) { 1413 ret = -ENOMEM; 1414 goto ei2cnd; 1415 } 1416 1417 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); 1418 if (ret < 0) 1419 goto evregdev; 1420 1421 return 0; 1422 1423evregdev: 1424ei2cnd: 1425ereset: 1426 i2c_put_adapter(i2c_adap); 1427ei2cgadap: 1428 video_device_release(vdev); 1429 pm_runtime_disable(&pdev->dev); 1430evdevalloc: 1431 v4l2_device_unregister(&vou_dev->v4l2_dev); 1432ev4l2devreg: 1433 free_irq(irq, vou_dev); 1434ereqirq: 1435 iounmap(vou_dev->base); 1436emap: 1437 release_mem_region(reg_res->start, resource_size(reg_res)); 1438ereqmemreg: 1439 kfree(vou_dev); 1440 return ret; 1441} 1442 1443static int __devexit sh_vou_remove(struct platform_device *pdev) 1444{ 1445 int irq = platform_get_irq(pdev, 0); 1446 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); 1447 struct sh_vou_device *vou_dev = container_of(v4l2_dev, 1448 struct sh_vou_device, v4l2_dev); 1449 struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next, 1450 struct v4l2_subdev, list); 1451 struct i2c_client *client = v4l2_get_subdevdata(sd); 1452 struct resource *reg_res; 1453 1454 if (irq > 0) 1455 free_irq(irq, vou_dev); 1456 pm_runtime_disable(&pdev->dev); 1457 video_unregister_device(vou_dev->vdev); 1458 i2c_put_adapter(client->adapter); 1459 v4l2_device_unregister(&vou_dev->v4l2_dev); 1460 iounmap(vou_dev->base); 1461 reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1462 if (reg_res) 1463 release_mem_region(reg_res->start, resource_size(reg_res)); 1464 kfree(vou_dev); 1465 return 0; 1466} 1467 1468static struct platform_driver __refdata sh_vou = { 1469 .remove = __devexit_p(sh_vou_remove), 1470 .driver = { 1471 .name = "sh-vou", 1472 .owner = THIS_MODULE, 1473 }, 1474}; 1475 1476static int __init sh_vou_init(void) 1477{ 1478 return platform_driver_probe(&sh_vou, sh_vou_probe); 1479} 1480 1481static void __exit sh_vou_exit(void) 1482{ 1483 platform_driver_unregister(&sh_vou); 1484} 1485 1486module_init(sh_vou_init); 1487module_exit(sh_vou_exit); 1488 1489MODULE_DESCRIPTION("SuperH VOU driver"); 1490MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); 1491MODULE_LICENSE("GPL v2"); 1492MODULE_VERSION("0.1.0"); 1493MODULE_ALIAS("platform:sh-vou"); 1494