11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds btcx-risc.c 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bt848/bt878/cx2388x risc code generator. 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (c) 2000-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds This program is free software; you can redistribute it and/or modify 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds it under the terms of the GNU General Public License as published by 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the Free Software Foundation; either version 2 of the License, or 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (at your option) any later version. 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds This program is distributed in the hope that it will be useful, 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds but WITHOUT ANY WARRANTY; without even the implied warranty of 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds GNU General Public License for more details. 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds You should have received a copy of the GNU General Public License 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds along with this program; if not, write to the Free Software 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pci.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/videodev2.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/page.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/pgtable.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "btcx-risc.h" 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("some code shared by bttv and cx88xx drivers"); 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("Gerd Knorr"); 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39a5ed425cd30c0c2abac4039ae11b38520aa130c2Mauro Carvalho Chehabstatic unsigned int debug; 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(debug, int, 0644); 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_PARM_DESC(debug,"debug messages, default is 0 (no)"); 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ---------------------------------------------------------- */ 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* allocate/free risc memory */ 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int memcnt; 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid btcx_riscmem_free(struct pci_dev *pci, 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct btcx_riscmem *risc) 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NULL == risc->cpu) 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug) { 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcnt--; 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("btcx: riscmem free [%d] dma=%lx\n", 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcnt, (unsigned long)risc->dma); 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pci_free_consistent(pci, risc->size, risc->cpu, risc->dma); 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(risc,0,sizeof(*risc)); 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint btcx_riscmem_alloc(struct pci_dev *pci, 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct btcx_riscmem *risc, 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int size) 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 66d8eaa58b06e8779453410d88d2d86e700a0432c6Al Viro __le32 *cpu; 67614b147b4f8f38a090f88ac02f67b01225bb5d54Hans Verkuil dma_addr_t dma = 0; 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NULL != risc->cpu && risc->size < size) 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds btcx_riscmem_free(pci,risc); 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NULL == risc->cpu) { 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cpu = pci_alloc_consistent(pci, size, &dma); 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NULL == cpu) 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds risc->cpu = cpu; 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds risc->dma = dma; 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds risc->size = size; 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug) { 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcnt++; 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("btcx: riscmem alloc [%d] dma=%lx cpu=%p size=%d\n", 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcnt, (unsigned long)dma, cpu, size); 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(risc->cpu,0,risc->size); 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ---------------------------------------------------------- */ 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* screen overlay helpers */ 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsbtcx_screen_clips(int swidth, int sheight, struct v4l2_rect *win, 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct v4l2_clip *clips, unsigned int n) 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (win->left < 0) { 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* left */ 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.left = 0; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.top = 0; 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.width = -win->left; 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.height = win->height; 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds n++; 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (win->left + win->width > swidth) { 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* right */ 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.left = swidth - win->left; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.top = 0; 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.width = win->width - clips[n].c.left; 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.height = win->height; 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds n++; 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (win->top < 0) { 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* top */ 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.left = 0; 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.top = 0; 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.width = win->width; 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.height = -win->top; 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds n++; 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (win->top + win->height > sheight) { 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* bottom */ 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.left = 0; 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.top = sheight - win->top; 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.width = win->width; 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[n].c.height = win->height - clips[n].c.top; 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds n++; 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return n; 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsbtcx_align(struct v4l2_rect *win, struct v4l2_clip *clips, unsigned int n, int mask) 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s32 nx,nw,dx; 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int i; 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* fixup window */ 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nx = (win->left + mask) & ~mask; 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nw = (win->width) & ~mask; 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (nx + nw > win->left + win->width) 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nw -= mask+1; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dx = nx - win->left; 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds win->left = nx; 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds win->width = nw; 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug) 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_DEBUG "btcx: window align %dx%d+%d+%d [dx=%d]\n", 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds win->width, win->height, win->left, win->top, dx); 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* fixup clips */ 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < n; i++) { 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nx = (clips[i].c.left-dx) & ~mask; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nw = (clips[i].c.width) & ~mask; 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (nx + nw < clips[i].c.left-dx + clips[i].c.width) 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nw += mask+1; 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[i].c.left = nx; 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[i].c.width = nw; 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug) 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_DEBUG "btcx: clip align %dx%d+%d+%d\n", 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[i].c.width, clips[i].c.height, 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[i].c.left, clips[i].c.top); 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsbtcx_sort_clips(struct v4l2_clip *clips, unsigned int nclips) 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct v4l2_clip swap; 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i,j,n; 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (nclips < 2) 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = nclips-2; i >= 0; i--) { 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (n = 0, j = 0; j <= i; j++) { 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clips[j].c.left > clips[j+1].c.left) { 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds swap = clips[j]; 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[j] = clips[j+1]; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clips[j+1] = swap; 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds n++; 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (0 == n) 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid 187c6eb8eafdba4ad18b4520a0d28a38bc9e61883eaHans Verkuilbtcx_calc_skips(int line, int width, int *maxy, 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct btcx_skiplist *skips, unsigned int *nskips, 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct v4l2_clip *clips, unsigned int nclips) 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int clip,skip; 192c6eb8eafdba4ad18b4520a0d28a38bc9e61883eaHans Verkuil int end, maxline; 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skip=0; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maxline = 9999; 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (clip = 0; clip < nclips; clip++) { 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sanity checks */ 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clips[clip].c.left + clips[clip].c.width <= 0) 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clips[clip].c.left > (signed)width) 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* vertical range */ 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (line > clips[clip].c.top+clips[clip].c.height-1) 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (line < clips[clip].c.top) { 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maxline > clips[clip].c.top-1) 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maxline = clips[clip].c.top-1; 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maxline > clips[clip].c.top+clips[clip].c.height-1) 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maxline = clips[clip].c.top+clips[clip].c.height-1; 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* horizontal range */ 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (0 == skip || clips[clip].c.left > skips[skip-1].end) { 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* new one */ 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skips[skip].start = clips[clip].c.left; 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (skips[skip].start < 0) 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skips[skip].start = 0; 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skips[skip].end = clips[clip].c.left + clips[clip].c.width; 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (skips[skip].end > width) 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skips[skip].end = width; 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skip++; 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* overlaps -- expand last one */ 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds end = clips[clip].c.left + clips[clip].c.width; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (skips[skip-1].end < end) 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skips[skip-1].end = end; 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (skips[skip-1].end > width) 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skips[skip-1].end = width; 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *nskips = skip; 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *maxy = maxline; 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug) { 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_DEBUG "btcx: skips line %d-%d:",line,maxline); 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (skip = 0; skip < *nskips; skip++) { 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" %d-%d",skips[skip].start,skips[skip].end); 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ---------------------------------------------------------- */ 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(btcx_riscmem_alloc); 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(btcx_riscmem_free); 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(btcx_screen_clips); 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(btcx_align); 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(btcx_sort_clips); 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(btcx_calc_skips); 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Local variables: 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * c-basic-offset: 8 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * End: 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 261