1/* 2 On Screen Display cx23415 Framebuffer driver 3 4 This module presents the cx23415 OSD (onscreen display) framebuffer memory 5 as a standard Linux /dev/fb style framebuffer device. The framebuffer has 6 support for 8, 16 & 32 bpp packed pixel formats with alpha channel. In 16bpp 7 mode, there is a choice of a three color depths (12, 15 or 16 bits), but no 8 local alpha. The colorspace is selectable between rgb & yuv. 9 Depending on the TV standard configured in the ivtv module at load time, 10 the initial resolution is either 640x400 (NTSC) or 640x480 (PAL) at 8bpp. 11 Video timings are locked to ensure a vertical refresh rate of 50Hz (PAL) 12 or 59.94 (NTSC) 13 14 Copyright (c) 2003 Matt T. Yourst <yourst@yourst.com> 15 16 Derived from drivers/video/vesafb.c 17 Portions (c) 1998 Gerd Knorr <kraxel@goldbach.in-berlin.de> 18 19 2.6 kernel port: 20 Copyright (C) 2004 Matthias Badaire 21 22 Copyright (C) 2004 Chris Kennedy <c@groovy.org> 23 24 Copyright (C) 2006 Ian Armstrong <ian@iarmst.demon.co.uk> 25 26 This program is free software; you can redistribute it and/or modify 27 it under the terms of the GNU General Public License as published by 28 the Free Software Foundation; either version 2 of the License, or 29 (at your option) any later version. 30 31 This program is distributed in the hope that it will be useful, 32 but WITHOUT ANY WARRANTY; without even the implied warranty of 33 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 34 GNU General Public License for more details. 35 36 You should have received a copy of the GNU General Public License 37 along with this program; if not, write to the Free Software 38 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 39 */ 40 41#include <linux/module.h> 42#include <linux/kernel.h> 43#include <linux/fb.h> 44#include <linux/ivtvfb.h> 45#include <linux/slab.h> 46 47#ifdef CONFIG_MTRR 48#include <asm/mtrr.h> 49#endif 50 51#include "ivtv-driver.h" 52#include "ivtv-cards.h" 53#include "ivtv-i2c.h" 54#include "ivtv-udma.h" 55#include "ivtv-mailbox.h" 56#include "ivtv-firmware.h" 57 58/* card parameters */ 59static int ivtvfb_card_id = -1; 60static int ivtvfb_debug = 0; 61static bool osd_laced; 62static int osd_depth; 63static int osd_upper; 64static int osd_left; 65static int osd_yres; 66static int osd_xres; 67 68module_param(ivtvfb_card_id, int, 0444); 69module_param_named(debug,ivtvfb_debug, int, 0644); 70module_param(osd_laced, bool, 0444); 71module_param(osd_depth, int, 0444); 72module_param(osd_upper, int, 0444); 73module_param(osd_left, int, 0444); 74module_param(osd_yres, int, 0444); 75module_param(osd_xres, int, 0444); 76 77MODULE_PARM_DESC(ivtvfb_card_id, 78 "Only use framebuffer of the specified ivtv card (0-31)\n" 79 "\t\t\tdefault -1: initialize all available framebuffers"); 80 81MODULE_PARM_DESC(debug, 82 "Debug level (bitmask). Default: errors only\n" 83 "\t\t\t(debug = 3 gives full debugging)"); 84 85/* Why upper, left, xres, yres, depth, laced ? To match terminology used 86 by fbset. 87 Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */ 88 89MODULE_PARM_DESC(osd_laced, 90 "Interlaced mode\n" 91 "\t\t\t0=off\n" 92 "\t\t\t1=on\n" 93 "\t\t\tdefault off"); 94 95MODULE_PARM_DESC(osd_depth, 96 "Bits per pixel - 8, 16, 32\n" 97 "\t\t\tdefault 8"); 98 99MODULE_PARM_DESC(osd_upper, 100 "Vertical start position\n" 101 "\t\t\tdefault 0 (Centered)"); 102 103MODULE_PARM_DESC(osd_left, 104 "Horizontal start position\n" 105 "\t\t\tdefault 0 (Centered)"); 106 107MODULE_PARM_DESC(osd_yres, 108 "Display height\n" 109 "\t\t\tdefault 480 (PAL)\n" 110 "\t\t\t 400 (NTSC)"); 111 112MODULE_PARM_DESC(osd_xres, 113 "Display width\n" 114 "\t\t\tdefault 640"); 115 116MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong"); 117MODULE_LICENSE("GPL"); 118 119/* --------------------------------------------------------------------- */ 120 121#define IVTVFB_DBGFLG_WARN (1 << 0) 122#define IVTVFB_DBGFLG_INFO (1 << 1) 123 124#define IVTVFB_DEBUG(x, type, fmt, args...) \ 125 do { \ 126 if ((x) & ivtvfb_debug) \ 127 printk(KERN_INFO "ivtvfb%d " type ": " fmt, itv->instance , ## args); \ 128 } while (0) 129#define IVTVFB_DEBUG_WARN(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_WARN, "warning", fmt , ## args) 130#define IVTVFB_DEBUG_INFO(fmt, args...) IVTVFB_DEBUG(IVTVFB_DBGFLG_INFO, "info", fmt , ## args) 131 132/* Standard kernel messages */ 133#define IVTVFB_ERR(fmt, args...) printk(KERN_ERR "ivtvfb%d: " fmt, itv->instance , ## args) 134#define IVTVFB_WARN(fmt, args...) printk(KERN_WARNING "ivtvfb%d: " fmt, itv->instance , ## args) 135#define IVTVFB_INFO(fmt, args...) printk(KERN_INFO "ivtvfb%d: " fmt, itv->instance , ## args) 136 137/* --------------------------------------------------------------------- */ 138 139#define IVTV_OSD_MAX_WIDTH 720 140#define IVTV_OSD_MAX_HEIGHT 576 141 142#define IVTV_OSD_BPP_8 0x00 143#define IVTV_OSD_BPP_16_444 0x03 144#define IVTV_OSD_BPP_16_555 0x02 145#define IVTV_OSD_BPP_16_565 0x01 146#define IVTV_OSD_BPP_32 0x04 147 148struct osd_info { 149 /* Physical base address */ 150 unsigned long video_pbase; 151 /* Relative base address (relative to start of decoder memory) */ 152 u32 video_rbase; 153 /* Mapped base address */ 154 volatile char __iomem *video_vbase; 155 /* Buffer size */ 156 u32 video_buffer_size; 157 158#ifdef CONFIG_MTRR 159 /* video_base rounded down as required by hardware MTRRs */ 160 unsigned long fb_start_aligned_physaddr; 161 /* video_base rounded up as required by hardware MTRRs */ 162 unsigned long fb_end_aligned_physaddr; 163#endif 164 165 /* Store the buffer offset */ 166 int set_osd_coords_x; 167 int set_osd_coords_y; 168 169 /* Current dimensions (NOT VISIBLE SIZE!) */ 170 int display_width; 171 int display_height; 172 int display_byte_stride; 173 174 /* Current bits per pixel */ 175 int bits_per_pixel; 176 int bytes_per_pixel; 177 178 /* Frame buffer stuff */ 179 struct fb_info ivtvfb_info; 180 struct fb_var_screeninfo ivtvfb_defined; 181 struct fb_fix_screeninfo ivtvfb_fix; 182 183 /* Used for a warm start */ 184 struct fb_var_screeninfo fbvar_cur; 185 int blank_cur; 186 u32 palette_cur[256]; 187 u32 pan_cur; 188}; 189 190struct ivtv_osd_coords { 191 unsigned long offset; 192 unsigned long max_offset; 193 int pixel_stride; 194 int lines; 195 int x; 196 int y; 197}; 198 199/* --------------------------------------------------------------------- */ 200 201/* ivtv API calls for framebuffer related support */ 202 203static int ivtvfb_get_framebuffer(struct ivtv *itv, u32 *fbbase, 204 u32 *fblength) 205{ 206 u32 data[CX2341X_MBOX_MAX_DATA]; 207 int rc; 208 209 ivtv_firmware_check(itv, "ivtvfb_get_framebuffer"); 210 rc = ivtv_vapi_result(itv, data, CX2341X_OSD_GET_FRAMEBUFFER, 0); 211 *fbbase = data[0]; 212 *fblength = data[1]; 213 return rc; 214} 215 216static int ivtvfb_get_osd_coords(struct ivtv *itv, 217 struct ivtv_osd_coords *osd) 218{ 219 struct osd_info *oi = itv->osd_info; 220 u32 data[CX2341X_MBOX_MAX_DATA]; 221 222 ivtv_vapi_result(itv, data, CX2341X_OSD_GET_OSD_COORDS, 0); 223 224 osd->offset = data[0] - oi->video_rbase; 225 osd->max_offset = oi->display_width * oi->display_height * 4; 226 osd->pixel_stride = data[1]; 227 osd->lines = data[2]; 228 osd->x = data[3]; 229 osd->y = data[4]; 230 return 0; 231} 232 233static int ivtvfb_set_osd_coords(struct ivtv *itv, const struct ivtv_osd_coords *osd) 234{ 235 struct osd_info *oi = itv->osd_info; 236 237 oi->display_width = osd->pixel_stride; 238 oi->display_byte_stride = osd->pixel_stride * oi->bytes_per_pixel; 239 oi->set_osd_coords_x += osd->x; 240 oi->set_osd_coords_y = osd->y; 241 242 return ivtv_vapi(itv, CX2341X_OSD_SET_OSD_COORDS, 5, 243 osd->offset + oi->video_rbase, 244 osd->pixel_stride, 245 osd->lines, osd->x, osd->y); 246} 247 248static int ivtvfb_set_display_window(struct ivtv *itv, struct v4l2_rect *ivtv_window) 249{ 250 int osd_height_limit = itv->is_out_50hz ? 576 : 480; 251 252 /* Only fail if resolution too high, otherwise fudge the start coords. */ 253 if ((ivtv_window->height > osd_height_limit) || (ivtv_window->width > IVTV_OSD_MAX_WIDTH)) 254 return -EINVAL; 255 256 /* Ensure we don't exceed display limits */ 257 if (ivtv_window->top + ivtv_window->height > osd_height_limit) { 258 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid height setting (%d, %d)\n", 259 ivtv_window->top, ivtv_window->height); 260 ivtv_window->top = osd_height_limit - ivtv_window->height; 261 } 262 263 if (ivtv_window->left + ivtv_window->width > IVTV_OSD_MAX_WIDTH) { 264 IVTVFB_DEBUG_WARN("ivtv_ioctl_fb_set_display_window - Invalid width setting (%d, %d)\n", 265 ivtv_window->left, ivtv_window->width); 266 ivtv_window->left = IVTV_OSD_MAX_WIDTH - ivtv_window->width; 267 } 268 269 /* Set the OSD origin */ 270 write_reg((ivtv_window->top << 16) | ivtv_window->left, 0x02a04); 271 272 /* How much to display */ 273 write_reg(((ivtv_window->top+ivtv_window->height) << 16) | (ivtv_window->left+ivtv_window->width), 0x02a08); 274 275 /* Pass this info back the yuv handler */ 276 itv->yuv_info.osd_vis_w = ivtv_window->width; 277 itv->yuv_info.osd_vis_h = ivtv_window->height; 278 itv->yuv_info.osd_x_offset = ivtv_window->left; 279 itv->yuv_info.osd_y_offset = ivtv_window->top; 280 281 return 0; 282} 283 284static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv, 285 unsigned long ivtv_dest_addr, void __user *userbuf, 286 int size_in_bytes) 287{ 288 DEFINE_WAIT(wait); 289 int got_sig = 0; 290 291 mutex_lock(&itv->udma.lock); 292 /* Map User DMA */ 293 if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) { 294 mutex_unlock(&itv->udma.lock); 295 IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, " 296 "Error with get_user_pages: %d bytes, %d pages returned\n", 297 size_in_bytes, itv->udma.page_count); 298 299 /* get_user_pages must have failed completely */ 300 return -EIO; 301 } 302 303 IVTVFB_DEBUG_INFO("ivtvfb_prep_dec_dma_to_device, %d bytes, %d pages\n", 304 size_in_bytes, itv->udma.page_count); 305 306 ivtv_udma_prepare(itv); 307 prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE); 308 /* if no UDMA is pending and no UDMA is in progress, then the DMA 309 is finished */ 310 while (test_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags) || 311 test_bit(IVTV_F_I_UDMA, &itv->i_flags)) { 312 /* don't interrupt if the DMA is in progress but break off 313 a still pending DMA. */ 314 got_sig = signal_pending(current); 315 if (got_sig && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags)) 316 break; 317 got_sig = 0; 318 schedule(); 319 } 320 finish_wait(&itv->dma_waitq, &wait); 321 322 /* Unmap Last DMA Xfer */ 323 ivtv_udma_unmap(itv); 324 mutex_unlock(&itv->udma.lock); 325 if (got_sig) { 326 IVTV_DEBUG_INFO("User stopped OSD\n"); 327 return -EINTR; 328 } 329 330 return 0; 331} 332 333static int ivtvfb_prep_frame(struct ivtv *itv, int cmd, void __user *source, 334 unsigned long dest_offset, int count) 335{ 336 DEFINE_WAIT(wait); 337 struct osd_info *oi = itv->osd_info; 338 339 /* Nothing to do */ 340 if (count == 0) { 341 IVTVFB_DEBUG_WARN("ivtvfb_prep_frame: Nothing to do. count = 0\n"); 342 return -EINVAL; 343 } 344 345 /* Check Total FB Size */ 346 if ((dest_offset + count) > oi->video_buffer_size) { 347 IVTVFB_WARN("ivtvfb_prep_frame: Overflowing the framebuffer %ld, only %d available\n", 348 dest_offset + count, oi->video_buffer_size); 349 return -E2BIG; 350 } 351 352 /* Not fatal, but will have undesirable results */ 353 if ((unsigned long)source & 3) 354 IVTVFB_WARN("ivtvfb_prep_frame: Source address not 32 bit aligned (0x%08lx)\n", 355 (unsigned long)source); 356 357 if (dest_offset & 3) 358 IVTVFB_WARN("ivtvfb_prep_frame: Dest offset not 32 bit aligned (%ld)\n", dest_offset); 359 360 if (count & 3) 361 IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count); 362 363 /* Check Source */ 364 if (!access_ok(VERIFY_READ, source + dest_offset, count)) { 365 IVTVFB_WARN("Invalid userspace pointer 0x%08lx\n", 366 (unsigned long)source); 367 368 IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source 0x%08lx count %d\n", 369 dest_offset, (unsigned long)source, 370 count); 371 return -EINVAL; 372 } 373 374 /* OSD Address to send DMA to */ 375 dest_offset += IVTV_DECODER_OFFSET + oi->video_rbase; 376 377 /* Fill Buffers */ 378 return ivtvfb_prep_dec_dma_to_device(itv, dest_offset, source, count); 379} 380 381static ssize_t ivtvfb_write(struct fb_info *info, const char __user *buf, 382 size_t count, loff_t *ppos) 383{ 384 unsigned long p = *ppos; 385 void *dst; 386 int err = 0; 387 int dma_err; 388 unsigned long total_size; 389 struct ivtv *itv = (struct ivtv *) info->par; 390 unsigned long dma_offset = 391 IVTV_DECODER_OFFSET + itv->osd_info->video_rbase; 392 unsigned long dma_size; 393 u16 lead = 0, tail = 0; 394 395 if (info->state != FBINFO_STATE_RUNNING) 396 return -EPERM; 397 398 total_size = info->screen_size; 399 400 if (total_size == 0) 401 total_size = info->fix.smem_len; 402 403 if (p > total_size) 404 return -EFBIG; 405 406 if (count > total_size) { 407 err = -EFBIG; 408 count = total_size; 409 } 410 411 if (count + p > total_size) { 412 if (!err) 413 err = -ENOSPC; 414 count = total_size - p; 415 } 416 417 dst = (void __force *) (info->screen_base + p); 418 419 if (info->fbops->fb_sync) 420 info->fbops->fb_sync(info); 421 422 /* If transfer size > threshold and both src/dst 423 addresses are aligned, use DMA */ 424 if (count >= 4096 && 425 ((unsigned long)buf & 3) == ((unsigned long)dst & 3)) { 426 /* Odd address = can't DMA. Align */ 427 if ((unsigned long)dst & 3) { 428 lead = 4 - ((unsigned long)dst & 3); 429 if (copy_from_user(dst, buf, lead)) 430 return -EFAULT; 431 buf += lead; 432 dst += lead; 433 } 434 /* DMA resolution is 32 bits */ 435 if ((count - lead) & 3) 436 tail = (count - lead) & 3; 437 /* DMA the data */ 438 dma_size = count - lead - tail; 439 dma_err = ivtvfb_prep_dec_dma_to_device(itv, 440 p + lead + dma_offset, (void __user *)buf, dma_size); 441 if (dma_err) 442 return dma_err; 443 dst += dma_size; 444 buf += dma_size; 445 /* Copy any leftover data */ 446 if (tail && copy_from_user(dst, buf, tail)) 447 return -EFAULT; 448 } else if (copy_from_user(dst, buf, count)) { 449 return -EFAULT; 450 } 451 452 if (!err) 453 *ppos += count; 454 455 return (err) ? err : count; 456} 457 458static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) 459{ 460 DEFINE_WAIT(wait); 461 struct ivtv *itv = (struct ivtv *)info->par; 462 int rc = 0; 463 464 switch (cmd) { 465 case FBIOGET_VBLANK: { 466 struct fb_vblank vblank; 467 u32 trace; 468 469 memset(&vblank, 0, sizeof(struct fb_vblank)); 470 471 vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT | 472 FB_VBLANK_HAVE_VSYNC; 473 trace = read_reg(IVTV_REG_DEC_LINE_FIELD) >> 16; 474 if (itv->is_out_50hz && trace > 312) 475 trace -= 312; 476 else if (itv->is_out_60hz && trace > 262) 477 trace -= 262; 478 if (trace == 1) 479 vblank.flags |= FB_VBLANK_VSYNCING; 480 vblank.count = itv->last_vsync_field; 481 vblank.vcount = trace; 482 vblank.hcount = 0; 483 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank))) 484 return -EFAULT; 485 return 0; 486 } 487 488 case FBIO_WAITFORVSYNC: 489 prepare_to_wait(&itv->vsync_waitq, &wait, TASK_INTERRUPTIBLE); 490 if (!schedule_timeout(msecs_to_jiffies(50))) 491 rc = -ETIMEDOUT; 492 finish_wait(&itv->vsync_waitq, &wait); 493 return rc; 494 495 case IVTVFB_IOC_DMA_FRAME: { 496 struct ivtvfb_dma_frame args; 497 498 IVTVFB_DEBUG_INFO("IVTVFB_IOC_DMA_FRAME\n"); 499 if (copy_from_user(&args, (void __user *)arg, sizeof(args))) 500 return -EFAULT; 501 502 return ivtvfb_prep_frame(itv, cmd, args.source, args.dest_offset, args.count); 503 } 504 505 default: 506 IVTVFB_DEBUG_INFO("Unknown ioctl %08x\n", cmd); 507 return -EINVAL; 508 } 509 return 0; 510} 511 512/* Framebuffer device handling */ 513 514static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var) 515{ 516 struct osd_info *oi = itv->osd_info; 517 struct ivtv_osd_coords ivtv_osd; 518 struct v4l2_rect ivtv_window; 519 int osd_mode = -1; 520 521 IVTVFB_DEBUG_INFO("ivtvfb_set_var\n"); 522 523 /* Select color space */ 524 if (var->nonstd) /* YUV */ 525 write_reg(read_reg(0x02a00) | 0x0002000, 0x02a00); 526 else /* RGB */ 527 write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00); 528 529 /* Set the color mode */ 530 switch (var->bits_per_pixel) { 531 case 8: 532 osd_mode = IVTV_OSD_BPP_8; 533 break; 534 case 32: 535 osd_mode = IVTV_OSD_BPP_32; 536 break; 537 case 16: 538 switch (var->green.length) { 539 case 4: 540 osd_mode = IVTV_OSD_BPP_16_444; 541 break; 542 case 5: 543 osd_mode = IVTV_OSD_BPP_16_555; 544 break; 545 case 6: 546 osd_mode = IVTV_OSD_BPP_16_565; 547 break; 548 default: 549 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n"); 550 } 551 break; 552 default: 553 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n"); 554 } 555 556 /* Set video mode. Although rare, the display can become scrambled even 557 if we don't change mode. Always 'bounce' to osd_mode via mode 0 */ 558 if (osd_mode != -1) { 559 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0); 560 ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode); 561 } 562 563 oi->bits_per_pixel = var->bits_per_pixel; 564 oi->bytes_per_pixel = var->bits_per_pixel / 8; 565 566 /* Set the flicker filter */ 567 switch (var->vmode & FB_VMODE_MASK) { 568 case FB_VMODE_NONINTERLACED: /* Filter on */ 569 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 1); 570 break; 571 case FB_VMODE_INTERLACED: /* Filter off */ 572 ivtv_vapi(itv, CX2341X_OSD_SET_FLICKER_STATE, 1, 0); 573 break; 574 default: 575 IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid video mode\n"); 576 } 577 578 /* Read the current osd info */ 579 ivtvfb_get_osd_coords(itv, &ivtv_osd); 580 581 /* Now set the OSD to the size we want */ 582 ivtv_osd.pixel_stride = var->xres_virtual; 583 ivtv_osd.lines = var->yres_virtual; 584 ivtv_osd.x = 0; 585 ivtv_osd.y = 0; 586 ivtvfb_set_osd_coords(itv, &ivtv_osd); 587 588 /* Can't seem to find the right API combo for this. 589 Use another function which does what we need through direct register access. */ 590 ivtv_window.width = var->xres; 591 ivtv_window.height = var->yres; 592 593 /* Minimum margin cannot be 0, as X won't allow such a mode */ 594 if (!var->upper_margin) 595 var->upper_margin++; 596 if (!var->left_margin) 597 var->left_margin++; 598 ivtv_window.top = var->upper_margin - 1; 599 ivtv_window.left = var->left_margin - 1; 600 601 ivtvfb_set_display_window(itv, &ivtv_window); 602 603 /* Pass screen size back to yuv handler */ 604 itv->yuv_info.osd_full_w = ivtv_osd.pixel_stride; 605 itv->yuv_info.osd_full_h = ivtv_osd.lines; 606 607 /* Force update of yuv registers */ 608 itv->yuv_info.yuv_forced_update = 1; 609 610 /* Keep a copy of these settings */ 611 memcpy(&oi->fbvar_cur, var, sizeof(oi->fbvar_cur)); 612 613 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n", 614 var->xres, var->yres, 615 var->xres_virtual, var->yres_virtual, 616 var->bits_per_pixel); 617 618 IVTVFB_DEBUG_INFO("Display position: %d, %d\n", 619 var->left_margin, var->upper_margin); 620 621 IVTVFB_DEBUG_INFO("Display filter: %s\n", 622 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off"); 623 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB"); 624 625 return 0; 626} 627 628static int ivtvfb_get_fix(struct ivtv *itv, struct fb_fix_screeninfo *fix) 629{ 630 struct osd_info *oi = itv->osd_info; 631 632 IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n"); 633 memset(fix, 0, sizeof(struct fb_fix_screeninfo)); 634 strlcpy(fix->id, "cx23415 TV out", sizeof(fix->id)); 635 fix->smem_start = oi->video_pbase; 636 fix->smem_len = oi->video_buffer_size; 637 fix->type = FB_TYPE_PACKED_PIXELS; 638 fix->visual = (oi->bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; 639 fix->xpanstep = 1; 640 fix->ypanstep = 1; 641 fix->ywrapstep = 0; 642 fix->line_length = oi->display_byte_stride; 643 fix->accel = FB_ACCEL_NONE; 644 return 0; 645} 646 647/* Check the requested display mode, returning -EINVAL if we can't 648 handle it. */ 649 650static int _ivtvfb_check_var(struct fb_var_screeninfo *var, struct ivtv *itv) 651{ 652 struct osd_info *oi = itv->osd_info; 653 int osd_height_limit; 654 u32 pixclock, hlimit, vlimit; 655 656 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n"); 657 658 /* Set base references for mode calcs. */ 659 if (itv->is_out_50hz) { 660 pixclock = 84316; 661 hlimit = 776; 662 vlimit = 591; 663 osd_height_limit = 576; 664 } 665 else { 666 pixclock = 83926; 667 hlimit = 776; 668 vlimit = 495; 669 osd_height_limit = 480; 670 } 671 672 if (var->bits_per_pixel == 8 || var->bits_per_pixel == 32) { 673 var->transp.offset = 24; 674 var->transp.length = 8; 675 var->red.offset = 16; 676 var->red.length = 8; 677 var->green.offset = 8; 678 var->green.length = 8; 679 var->blue.offset = 0; 680 var->blue.length = 8; 681 } 682 else if (var->bits_per_pixel == 16) { 683 /* To find out the true mode, check green length */ 684 switch (var->green.length) { 685 case 4: 686 var->red.offset = 8; 687 var->red.length = 4; 688 var->green.offset = 4; 689 var->green.length = 4; 690 var->blue.offset = 0; 691 var->blue.length = 4; 692 var->transp.offset = 12; 693 var->transp.length = 1; 694 break; 695 case 5: 696 var->red.offset = 10; 697 var->red.length = 5; 698 var->green.offset = 5; 699 var->green.length = 5; 700 var->blue.offset = 0; 701 var->blue.length = 5; 702 var->transp.offset = 15; 703 var->transp.length = 1; 704 break; 705 default: 706 var->red.offset = 11; 707 var->red.length = 5; 708 var->green.offset = 5; 709 var->green.length = 6; 710 var->blue.offset = 0; 711 var->blue.length = 5; 712 var->transp.offset = 0; 713 var->transp.length = 0; 714 break; 715 } 716 } 717 else { 718 IVTVFB_DEBUG_WARN("Invalid colour mode: %d\n", var->bits_per_pixel); 719 return -EINVAL; 720 } 721 722 /* Check the resolution */ 723 if (var->xres > IVTV_OSD_MAX_WIDTH || var->yres > osd_height_limit) { 724 IVTVFB_DEBUG_WARN("Invalid resolution: %dx%d\n", 725 var->xres, var->yres); 726 return -EINVAL; 727 } 728 729 /* Max horizontal size is 1023 @ 32bpp, 2046 & 16bpp, 4092 @ 8bpp */ 730 if (var->xres_virtual > 4095 / (var->bits_per_pixel / 8) || 731 var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8) > oi->video_buffer_size || 732 var->xres_virtual < var->xres || 733 var->yres_virtual < var->yres) { 734 IVTVFB_DEBUG_WARN("Invalid virtual resolution: %dx%d\n", 735 var->xres_virtual, var->yres_virtual); 736 return -EINVAL; 737 } 738 739 /* Some extra checks if in 8 bit mode */ 740 if (var->bits_per_pixel == 8) { 741 /* Width must be a multiple of 4 */ 742 if (var->xres & 3) { 743 IVTVFB_DEBUG_WARN("Invalid resolution for 8bpp: %d\n", var->xres); 744 return -EINVAL; 745 } 746 if (var->xres_virtual & 3) { 747 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 8bpp: %d)\n", var->xres_virtual); 748 return -EINVAL; 749 } 750 } 751 else if (var->bits_per_pixel == 16) { 752 /* Width must be a multiple of 2 */ 753 if (var->xres & 1) { 754 IVTVFB_DEBUG_WARN("Invalid resolution for 16bpp: %d\n", var->xres); 755 return -EINVAL; 756 } 757 if (var->xres_virtual & 1) { 758 IVTVFB_DEBUG_WARN("Invalid virtual resolution for 16bpp: %d)\n", var->xres_virtual); 759 return -EINVAL; 760 } 761 } 762 763 /* Now check the offsets */ 764 if (var->xoffset >= var->xres_virtual || var->yoffset >= var->yres_virtual) { 765 IVTVFB_DEBUG_WARN("Invalid offset: %d (%d) %d (%d)\n", 766 var->xoffset, var->xres_virtual, var->yoffset, var->yres_virtual); 767 return -EINVAL; 768 } 769 770 /* Check pixel format */ 771 if (var->nonstd > 1) { 772 IVTVFB_DEBUG_WARN("Invalid nonstd % d\n", var->nonstd); 773 return -EINVAL; 774 } 775 776 /* Check video mode */ 777 if (((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) && 778 ((var->vmode & FB_VMODE_MASK) != FB_VMODE_INTERLACED)) { 779 IVTVFB_DEBUG_WARN("Invalid video mode: %d\n", var->vmode & FB_VMODE_MASK); 780 return -EINVAL; 781 } 782 783 /* Check the left & upper margins 784 If the margins are too large, just center the screen 785 (enforcing margins causes too many problems) */ 786 787 if (var->left_margin + var->xres > IVTV_OSD_MAX_WIDTH + 1) 788 var->left_margin = 1 + ((IVTV_OSD_MAX_WIDTH - var->xres) / 2); 789 790 if (var->upper_margin + var->yres > (itv->is_out_50hz ? 577 : 481)) 791 var->upper_margin = 1 + (((itv->is_out_50hz ? 576 : 480) - 792 var->yres) / 2); 793 794 /* Maintain overall 'size' for a constant refresh rate */ 795 var->right_margin = hlimit - var->left_margin - var->xres; 796 var->lower_margin = vlimit - var->upper_margin - var->yres; 797 798 /* Fixed sync times */ 799 var->hsync_len = 24; 800 var->vsync_len = 2; 801 802 /* Non-interlaced / interlaced mode is used to switch the OSD filter 803 on or off. Adjust the clock timings to maintain a constant 804 vertical refresh rate. */ 805 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED) 806 var->pixclock = pixclock / 2; 807 else 808 var->pixclock = pixclock; 809 810 itv->osd_rect.width = var->xres; 811 itv->osd_rect.height = var->yres; 812 813 IVTVFB_DEBUG_INFO("Display size: %dx%d (virtual %dx%d) @ %dbpp\n", 814 var->xres, var->yres, 815 var->xres_virtual, var->yres_virtual, 816 var->bits_per_pixel); 817 818 IVTVFB_DEBUG_INFO("Display position: %d, %d\n", 819 var->left_margin, var->upper_margin); 820 821 IVTVFB_DEBUG_INFO("Display filter: %s\n", 822 (var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED ? "on" : "off"); 823 IVTVFB_DEBUG_INFO("Color space: %s\n", var->nonstd ? "YUV" : "RGB"); 824 return 0; 825} 826 827static int ivtvfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) 828{ 829 struct ivtv *itv = (struct ivtv *) info->par; 830 IVTVFB_DEBUG_INFO("ivtvfb_check_var\n"); 831 return _ivtvfb_check_var(var, itv); 832} 833 834static int ivtvfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) 835{ 836 u32 osd_pan_index; 837 struct ivtv *itv = (struct ivtv *) info->par; 838 839 if (var->yoffset + info->var.yres > info->var.yres_virtual || 840 var->xoffset + info->var.xres > info->var.xres_virtual) 841 return -EINVAL; 842 843 osd_pan_index = var->yoffset * info->fix.line_length 844 + var->xoffset * info->var.bits_per_pixel / 8; 845 write_reg(osd_pan_index, 0x02A0C); 846 847 /* Pass this info back the yuv handler */ 848 itv->yuv_info.osd_x_pan = var->xoffset; 849 itv->yuv_info.osd_y_pan = var->yoffset; 850 /* Force update of yuv registers */ 851 itv->yuv_info.yuv_forced_update = 1; 852 /* Remember this value */ 853 itv->osd_info->pan_cur = osd_pan_index; 854 return 0; 855} 856 857static int ivtvfb_set_par(struct fb_info *info) 858{ 859 int rc = 0; 860 struct ivtv *itv = (struct ivtv *) info->par; 861 862 IVTVFB_DEBUG_INFO("ivtvfb_set_par\n"); 863 864 rc = ivtvfb_set_var(itv, &info->var); 865 ivtvfb_pan_display(&info->var, info); 866 ivtvfb_get_fix(itv, &info->fix); 867 ivtv_firmware_check(itv, "ivtvfb_set_par"); 868 return rc; 869} 870 871static int ivtvfb_setcolreg(unsigned regno, unsigned red, unsigned green, 872 unsigned blue, unsigned transp, 873 struct fb_info *info) 874{ 875 u32 color, *palette; 876 struct ivtv *itv = (struct ivtv *)info->par; 877 878 if (regno >= info->cmap.len) 879 return -EINVAL; 880 881 color = ((transp & 0xFF00) << 16) |((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8); 882 if (info->var.bits_per_pixel <= 8) { 883 write_reg(regno, 0x02a30); 884 write_reg(color, 0x02a34); 885 itv->osd_info->palette_cur[regno] = color; 886 return 0; 887 } 888 if (regno >= 16) 889 return -EINVAL; 890 891 palette = info->pseudo_palette; 892 if (info->var.bits_per_pixel == 16) { 893 switch (info->var.green.length) { 894 case 4: 895 color = ((red & 0xf000) >> 4) | 896 ((green & 0xf000) >> 8) | 897 ((blue & 0xf000) >> 12); 898 break; 899 case 5: 900 color = ((red & 0xf800) >> 1) | 901 ((green & 0xf800) >> 6) | 902 ((blue & 0xf800) >> 11); 903 break; 904 case 6: 905 color = (red & 0xf800 ) | 906 ((green & 0xfc00) >> 5) | 907 ((blue & 0xf800) >> 11); 908 break; 909 } 910 } 911 palette[regno] = color; 912 return 0; 913} 914 915/* We don't really support blanking. All this does is enable or 916 disable the OSD. */ 917static int ivtvfb_blank(int blank_mode, struct fb_info *info) 918{ 919 struct ivtv *itv = (struct ivtv *)info->par; 920 921 IVTVFB_DEBUG_INFO("Set blanking mode : %d\n", blank_mode); 922 switch (blank_mode) { 923 case FB_BLANK_UNBLANK: 924 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1); 925 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1); 926 break; 927 case FB_BLANK_NORMAL: 928 case FB_BLANK_HSYNC_SUSPEND: 929 case FB_BLANK_VSYNC_SUSPEND: 930 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0); 931 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 1); 932 break; 933 case FB_BLANK_POWERDOWN: 934 ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_stream, 0); 935 ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0); 936 break; 937 } 938 itv->osd_info->blank_cur = blank_mode; 939 return 0; 940} 941 942static struct fb_ops ivtvfb_ops = { 943 .owner = THIS_MODULE, 944 .fb_write = ivtvfb_write, 945 .fb_check_var = ivtvfb_check_var, 946 .fb_set_par = ivtvfb_set_par, 947 .fb_setcolreg = ivtvfb_setcolreg, 948 .fb_fillrect = cfb_fillrect, 949 .fb_copyarea = cfb_copyarea, 950 .fb_imageblit = cfb_imageblit, 951 .fb_cursor = NULL, 952 .fb_ioctl = ivtvfb_ioctl, 953 .fb_pan_display = ivtvfb_pan_display, 954 .fb_blank = ivtvfb_blank, 955}; 956 957/* Restore hardware after firmware restart */ 958static void ivtvfb_restore(struct ivtv *itv) 959{ 960 struct osd_info *oi = itv->osd_info; 961 int i; 962 963 ivtvfb_set_var(itv, &oi->fbvar_cur); 964 ivtvfb_blank(oi->blank_cur, &oi->ivtvfb_info); 965 for (i = 0; i < 256; i++) { 966 write_reg(i, 0x02a30); 967 write_reg(oi->palette_cur[i], 0x02a34); 968 } 969 write_reg(oi->pan_cur, 0x02a0c); 970} 971 972/* Initialization */ 973 974 975/* Setup our initial video mode */ 976static int ivtvfb_init_vidmode(struct ivtv *itv) 977{ 978 struct osd_info *oi = itv->osd_info; 979 struct v4l2_rect start_window; 980 int max_height; 981 982 /* Color mode */ 983 984 if (osd_depth != 8 && osd_depth != 16 && osd_depth != 32) 985 osd_depth = 8; 986 oi->bits_per_pixel = osd_depth; 987 oi->bytes_per_pixel = oi->bits_per_pixel / 8; 988 989 /* Horizontal size & position */ 990 991 if (osd_xres > 720) 992 osd_xres = 720; 993 994 /* Must be a multiple of 4 for 8bpp & 2 for 16bpp */ 995 if (osd_depth == 8) 996 osd_xres &= ~3; 997 else if (osd_depth == 16) 998 osd_xres &= ~1; 999 1000 start_window.width = osd_xres ? osd_xres : 640; 1001 1002 /* Check horizontal start (osd_left). */ 1003 if (osd_left && osd_left + start_window.width > 721) { 1004 IVTVFB_ERR("Invalid osd_left - assuming default\n"); 1005 osd_left = 0; 1006 } 1007 1008 /* Hardware coords start at 0, user coords start at 1. */ 1009 osd_left--; 1010 1011 start_window.left = osd_left >= 0 ? 1012 osd_left : ((IVTV_OSD_MAX_WIDTH - start_window.width) / 2); 1013 1014 oi->display_byte_stride = 1015 start_window.width * oi->bytes_per_pixel; 1016 1017 /* Vertical size & position */ 1018 1019 max_height = itv->is_out_50hz ? 576 : 480; 1020 1021 if (osd_yres > max_height) 1022 osd_yres = max_height; 1023 1024 start_window.height = osd_yres ? 1025 osd_yres : itv->is_out_50hz ? 480 : 400; 1026 1027 /* Check vertical start (osd_upper). */ 1028 if (osd_upper + start_window.height > max_height + 1) { 1029 IVTVFB_ERR("Invalid osd_upper - assuming default\n"); 1030 osd_upper = 0; 1031 } 1032 1033 /* Hardware coords start at 0, user coords start at 1. */ 1034 osd_upper--; 1035 1036 start_window.top = osd_upper >= 0 ? osd_upper : ((max_height - start_window.height) / 2); 1037 1038 oi->display_width = start_window.width; 1039 oi->display_height = start_window.height; 1040 1041 /* Generate a valid fb_var_screeninfo */ 1042 1043 oi->ivtvfb_defined.xres = oi->display_width; 1044 oi->ivtvfb_defined.yres = oi->display_height; 1045 oi->ivtvfb_defined.xres_virtual = oi->display_width; 1046 oi->ivtvfb_defined.yres_virtual = oi->display_height; 1047 oi->ivtvfb_defined.bits_per_pixel = oi->bits_per_pixel; 1048 oi->ivtvfb_defined.vmode = (osd_laced ? FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED); 1049 oi->ivtvfb_defined.left_margin = start_window.left + 1; 1050 oi->ivtvfb_defined.upper_margin = start_window.top + 1; 1051 oi->ivtvfb_defined.accel_flags = FB_ACCEL_NONE; 1052 oi->ivtvfb_defined.nonstd = 0; 1053 1054 /* We've filled in the most data, let the usual mode check 1055 routine fill in the rest. */ 1056 _ivtvfb_check_var(&oi->ivtvfb_defined, itv); 1057 1058 /* Generate valid fb_fix_screeninfo */ 1059 1060 ivtvfb_get_fix(itv, &oi->ivtvfb_fix); 1061 1062 /* Generate valid fb_info */ 1063 1064 oi->ivtvfb_info.node = -1; 1065 oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT; 1066 oi->ivtvfb_info.fbops = &ivtvfb_ops; 1067 oi->ivtvfb_info.par = itv; 1068 oi->ivtvfb_info.var = oi->ivtvfb_defined; 1069 oi->ivtvfb_info.fix = oi->ivtvfb_fix; 1070 oi->ivtvfb_info.screen_base = (u8 __iomem *)oi->video_vbase; 1071 oi->ivtvfb_info.fbops = &ivtvfb_ops; 1072 1073 /* Supply some monitor specs. Bogus values will do for now */ 1074 oi->ivtvfb_info.monspecs.hfmin = 8000; 1075 oi->ivtvfb_info.monspecs.hfmax = 70000; 1076 oi->ivtvfb_info.monspecs.vfmin = 10; 1077 oi->ivtvfb_info.monspecs.vfmax = 100; 1078 1079 /* Allocate color map */ 1080 if (fb_alloc_cmap(&oi->ivtvfb_info.cmap, 256, 1)) { 1081 IVTVFB_ERR("abort, unable to alloc cmap\n"); 1082 return -ENOMEM; 1083 } 1084 1085 /* Allocate the pseudo palette */ 1086 oi->ivtvfb_info.pseudo_palette = 1087 kmalloc(sizeof(u32) * 16, GFP_KERNEL|__GFP_NOWARN); 1088 1089 if (!oi->ivtvfb_info.pseudo_palette) { 1090 IVTVFB_ERR("abort, unable to alloc pseudo palette\n"); 1091 return -ENOMEM; 1092 } 1093 1094 return 0; 1095} 1096 1097/* Find OSD buffer base & size. Add to mtrr. Zero osd buffer. */ 1098 1099static int ivtvfb_init_io(struct ivtv *itv) 1100{ 1101 struct osd_info *oi = itv->osd_info; 1102 1103 mutex_lock(&itv->serialize_lock); 1104 if (ivtv_init_on_first_open(itv)) { 1105 mutex_unlock(&itv->serialize_lock); 1106 IVTVFB_ERR("Failed to initialize ivtv\n"); 1107 return -ENXIO; 1108 } 1109 mutex_unlock(&itv->serialize_lock); 1110 1111 if (ivtvfb_get_framebuffer(itv, &oi->video_rbase, 1112 &oi->video_buffer_size) < 0) { 1113 IVTVFB_ERR("Firmware failed to respond\n"); 1114 return -EIO; 1115 } 1116 1117 /* The osd buffer size depends on the number of video buffers allocated 1118 on the PVR350 itself. For now we'll hardcode the smallest osd buffer 1119 size to prevent any overlap. */ 1120 oi->video_buffer_size = 1704960; 1121 1122 oi->video_pbase = itv->base_addr + IVTV_DECODER_OFFSET + oi->video_rbase; 1123 oi->video_vbase = itv->dec_mem + oi->video_rbase; 1124 1125 if (!oi->video_vbase) { 1126 IVTVFB_ERR("abort, video memory 0x%x @ 0x%lx isn't mapped!\n", 1127 oi->video_buffer_size, oi->video_pbase); 1128 return -EIO; 1129 } 1130 1131 IVTVFB_INFO("Framebuffer at 0x%lx, mapped to 0x%p, size %dk\n", 1132 oi->video_pbase, oi->video_vbase, 1133 oi->video_buffer_size / 1024); 1134 1135#ifdef CONFIG_MTRR 1136 { 1137 /* Find the largest power of two that maps the whole buffer */ 1138 int size_shift = 31; 1139 1140 while (!(oi->video_buffer_size & (1 << size_shift))) { 1141 size_shift--; 1142 } 1143 size_shift++; 1144 oi->fb_start_aligned_physaddr = oi->video_pbase & ~((1 << size_shift) - 1); 1145 oi->fb_end_aligned_physaddr = oi->video_pbase + oi->video_buffer_size; 1146 oi->fb_end_aligned_physaddr += (1 << size_shift) - 1; 1147 oi->fb_end_aligned_physaddr &= ~((1 << size_shift) - 1); 1148 if (mtrr_add(oi->fb_start_aligned_physaddr, 1149 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr, 1150 MTRR_TYPE_WRCOMB, 1) < 0) { 1151 IVTVFB_INFO("disabled mttr\n"); 1152 oi->fb_start_aligned_physaddr = 0; 1153 oi->fb_end_aligned_physaddr = 0; 1154 } 1155 } 1156#endif 1157 1158 /* Blank the entire osd. */ 1159 memset_io(oi->video_vbase, 0, oi->video_buffer_size); 1160 1161 return 0; 1162} 1163 1164/* Release any memory we've grabbed & remove mtrr entry */ 1165static void ivtvfb_release_buffers (struct ivtv *itv) 1166{ 1167 struct osd_info *oi = itv->osd_info; 1168 1169 /* Release cmap */ 1170 if (oi->ivtvfb_info.cmap.len) 1171 fb_dealloc_cmap(&oi->ivtvfb_info.cmap); 1172 1173 /* Release pseudo palette */ 1174 if (oi->ivtvfb_info.pseudo_palette) 1175 kfree(oi->ivtvfb_info.pseudo_palette); 1176 1177#ifdef CONFIG_MTRR 1178 if (oi->fb_end_aligned_physaddr) { 1179 mtrr_del(-1, oi->fb_start_aligned_physaddr, 1180 oi->fb_end_aligned_physaddr - oi->fb_start_aligned_physaddr); 1181 } 1182#endif 1183 1184 kfree(oi); 1185 itv->osd_info = NULL; 1186} 1187 1188/* Initialize the specified card */ 1189 1190static int ivtvfb_init_card(struct ivtv *itv) 1191{ 1192 int rc; 1193 1194 if (itv->osd_info) { 1195 IVTVFB_ERR("Card %d already initialised\n", ivtvfb_card_id); 1196 return -EBUSY; 1197 } 1198 1199 itv->osd_info = kzalloc(sizeof(struct osd_info), 1200 GFP_ATOMIC|__GFP_NOWARN); 1201 if (itv->osd_info == NULL) { 1202 IVTVFB_ERR("Failed to allocate memory for osd_info\n"); 1203 return -ENOMEM; 1204 } 1205 1206 /* Find & setup the OSD buffer */ 1207 rc = ivtvfb_init_io(itv); 1208 if (rc) { 1209 ivtvfb_release_buffers(itv); 1210 return rc; 1211 } 1212 1213 /* Set the startup video mode information */ 1214 if ((rc = ivtvfb_init_vidmode(itv))) { 1215 ivtvfb_release_buffers(itv); 1216 return rc; 1217 } 1218 1219 /* Register the framebuffer */ 1220 if (register_framebuffer(&itv->osd_info->ivtvfb_info) < 0) { 1221 ivtvfb_release_buffers(itv); 1222 return -EINVAL; 1223 } 1224 1225 itv->osd_video_pbase = itv->osd_info->video_pbase; 1226 1227 /* Set the card to the requested mode */ 1228 ivtvfb_set_par(&itv->osd_info->ivtvfb_info); 1229 1230 /* Set color 0 to black */ 1231 write_reg(0, 0x02a30); 1232 write_reg(0, 0x02a34); 1233 1234 /* Enable the osd */ 1235 ivtvfb_blank(FB_BLANK_UNBLANK, &itv->osd_info->ivtvfb_info); 1236 1237 /* Enable restart */ 1238 itv->ivtvfb_restore = ivtvfb_restore; 1239 1240 /* Allocate DMA */ 1241 ivtv_udma_alloc(itv); 1242 return 0; 1243 1244} 1245 1246static int __init ivtvfb_callback_init(struct device *dev, void *p) 1247{ 1248 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev); 1249 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev); 1250 1251 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) { 1252 if (ivtvfb_init_card(itv) == 0) { 1253 IVTVFB_INFO("Framebuffer registered on %s\n", 1254 itv->v4l2_dev.name); 1255 (*(int *)p)++; 1256 } 1257 } 1258 return 0; 1259} 1260 1261static int ivtvfb_callback_cleanup(struct device *dev, void *p) 1262{ 1263 struct v4l2_device *v4l2_dev = dev_get_drvdata(dev); 1264 struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev); 1265 struct osd_info *oi = itv->osd_info; 1266 1267 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) { 1268 if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) { 1269 IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n", 1270 itv->instance); 1271 return 0; 1272 } 1273 IVTVFB_INFO("Unregister framebuffer %d\n", itv->instance); 1274 itv->ivtvfb_restore = NULL; 1275 ivtvfb_blank(FB_BLANK_VSYNC_SUSPEND, &oi->ivtvfb_info); 1276 ivtvfb_release_buffers(itv); 1277 itv->osd_video_pbase = 0; 1278 } 1279 return 0; 1280} 1281 1282static int __init ivtvfb_init(void) 1283{ 1284 struct device_driver *drv; 1285 int registered = 0; 1286 int err; 1287 1288 if (ivtvfb_card_id < -1 || ivtvfb_card_id >= IVTV_MAX_CARDS) { 1289 printk(KERN_ERR "ivtvfb: ivtvfb_card_id parameter is out of range (valid range: -1 - %d)\n", 1290 IVTV_MAX_CARDS - 1); 1291 return -EINVAL; 1292 } 1293 1294 drv = driver_find("ivtv", &pci_bus_type); 1295 err = driver_for_each_device(drv, NULL, ®istered, ivtvfb_callback_init); 1296 if (!registered) { 1297 printk(KERN_ERR "ivtvfb: no cards found\n"); 1298 return -ENODEV; 1299 } 1300 return 0; 1301} 1302 1303static void ivtvfb_cleanup(void) 1304{ 1305 struct device_driver *drv; 1306 int err; 1307 1308 printk(KERN_INFO "ivtvfb: Unloading framebuffer module\n"); 1309 1310 drv = driver_find("ivtv", &pci_bus_type); 1311 err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup); 1312} 1313 1314module_init(ivtvfb_init); 1315module_exit(ivtvfb_cleanup); 1316