16cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas/* 26cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas * linux/drivers/video/console/fbcon_rotate.h -- Software Display Rotation 36cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas * 46cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas * Copyright (C) 2005 Antonino Daplas <adaplas@pol.net> 56cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas * 66cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas * This file is subject to the terms and conditions of the GNU General Public 76cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas * License. See the file COPYING in the main directory of this archive 86cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas * for more details. 96cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas */ 106cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 116cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas#ifndef _FBCON_ROTATE_H 126cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas#define _FBCON_ROTATE_H 136cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 146cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas#define GETVYRES(s,i) ({ \ 156cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas (s == SCROLL_REDRAW || s == SCROLL_MOVE) ? \ 166cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas (i)->var.yres : (i)->var.yres_virtual; }) 176cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 186cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas#define GETVXRES(s,i) ({ \ 196cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas (s == SCROLL_REDRAW || s == SCROLL_MOVE || !(i)->fix.xpanstep) ? \ 206cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas (i)->var.xres : (i)->var.xres_virtual; }) 216cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 226cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 236cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplasstatic inline int pattern_test_bit(u32 x, u32 y, u32 pitch, const char *pat) 246cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas{ 256cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas u32 tmp = (y * pitch) + x, index = tmp / 8, bit = tmp % 8; 266cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 276cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas pat +=index; 281a9c3f78a32ddc4ec50f5da2cf2db5db6f442986Benjamin Herrenschmidt return (*pat) & (0x80 >> bit); 296cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas} 306cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 316cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplasstatic inline void pattern_set_bit(u32 x, u32 y, u32 pitch, char *pat) 326cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas{ 336cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas u32 tmp = (y * pitch) + x, index = tmp / 8, bit = tmp % 8; 346cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 356cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas pat += index; 361a9c3f78a32ddc4ec50f5da2cf2db5db6f442986Benjamin Herrenschmidt 371a9c3f78a32ddc4ec50f5da2cf2db5db6f442986Benjamin Herrenschmidt (*pat) |= 0x80 >> bit; 386cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas} 396cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 406cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplasstatic inline void rotate_ud(const char *in, char *out, u32 width, u32 height) 416cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas{ 426cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas int i, j; 43b4627dea032ab1f6e472fcf030e28f22ea971f9bAntonino A. Daplas int shift = (8 - (width % 8)) & 7; 446cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 456cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas width = (width + 7) & ~7; 466cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 476cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas for (i = 0; i < height; i++) { 4893274e4d4e9416ad1fa47e2f26011e2c483fe5feStefani Seibold for (j = 0; j < width - shift; j++) { 496cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas if (pattern_test_bit(j, i, width, in)) 506cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas pattern_set_bit(width - (1 + j + shift), 516cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas height - (1 + i), 526cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas width, out); 536cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas } 546cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 556cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas } 566cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas} 576cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 586cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplasstatic inline void rotate_cw(const char *in, char *out, u32 width, u32 height) 596cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas{ 606cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas int i, j, h = height, w = width; 616cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas int shift = (8 - (height % 8)) & 7; 626cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 636cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas width = (width + 7) & ~7; 646cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas height = (height + 7) & ~7; 656cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 666cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas for (i = 0; i < h; i++) { 676cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas for (j = 0; j < w; j++) { 686cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas if (pattern_test_bit(j, i, width, in)) 696cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas pattern_set_bit(height - 1 - i - shift, j, 706cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas height, out); 716cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 726cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas } 736cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas } 746cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas} 756cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 766cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplasstatic inline void rotate_ccw(const char *in, char *out, u32 width, u32 height) 776cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas{ 786cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas int i, j, h = height, w = width; 79b4627dea032ab1f6e472fcf030e28f22ea971f9bAntonino A. Daplas int shift = (8 - (width % 8)) & 7; 806cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 816cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas width = (width + 7) & ~7; 826cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas height = (height + 7) & ~7; 836cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 846cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas for (i = 0; i < h; i++) { 856cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas for (j = 0; j < w; j++) { 866cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas if (pattern_test_bit(j, i, width, in)) 876cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas pattern_set_bit(i, width - 1 - j - shift, 886cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas height, out); 896cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas } 906cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas } 916cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas} 926cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas 93dbcbfe1ea41e404d960a06fa2faf7da568909f33Antonino A. Daplasextern void fbcon_rotate_cw(struct fbcon_ops *ops); 9433ee82978c4ecf7cbd56064391c9385264185de2Antonino A. Daplasextern void fbcon_rotate_ud(struct fbcon_ops *ops); 95ed8c0e99f27451a9b980adf0de318d60e6de811fAntonino A. Daplasextern void fbcon_rotate_ccw(struct fbcon_ops *ops); 966cc50e1c5b57180fd37a31282000f43859b0fe73Antonino A. Daplas#endif 97