diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/x86/boot/video-mode.c')
-rw-r--r-- | ANDROID_3.4.5/arch/x86/boot/video-mode.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/ANDROID_3.4.5/arch/x86/boot/video-mode.c b/ANDROID_3.4.5/arch/x86/boot/video-mode.c deleted file mode 100644 index 748e8d06..00000000 --- a/ANDROID_3.4.5/arch/x86/boot/video-mode.c +++ /dev/null @@ -1,173 +0,0 @@ -/* -*- linux-c -*- ------------------------------------------------------- * - * - * Copyright (C) 1991, 1992 Linus Torvalds - * Copyright 2007-2008 rPath, Inc. - All Rights Reserved - * - * This file is part of the Linux kernel, and is made available under - * the terms of the GNU General Public License version 2. - * - * ----------------------------------------------------------------------- */ - -/* - * arch/i386/boot/video-mode.c - * - * Set the video mode. This is separated out into a different - * file in order to be shared with the ACPI wakeup code. - */ - -#include "boot.h" -#include "video.h" -#include "vesa.h" - -/* - * Common variables - */ -int adapter; /* 0=CGA/MDA/HGC, 1=EGA, 2=VGA+ */ -u16 video_segment; -int force_x, force_y; /* Don't query the BIOS for cols/rows */ - -int do_restore; /* Screen contents changed during mode flip */ -int graphic_mode; /* Graphic mode with linear frame buffer */ - -/* Probe the video drivers and have them generate their mode lists. */ -void probe_cards(int unsafe) -{ - struct card_info *card; - static u8 probed[2]; - - if (probed[unsafe]) - return; - - probed[unsafe] = 1; - - for (card = video_cards; card < video_cards_end; card++) { - if (card->unsafe == unsafe) { - if (card->probe) - card->nmodes = card->probe(); - else - card->nmodes = 0; - } - } -} - -/* Test if a mode is defined */ -int mode_defined(u16 mode) -{ - struct card_info *card; - struct mode_info *mi; - int i; - - for (card = video_cards; card < video_cards_end; card++) { - mi = card->modes; - for (i = 0; i < card->nmodes; i++, mi++) { - if (mi->mode == mode) - return 1; - } - } - - return 0; -} - -/* Set mode (without recalc) */ -static int raw_set_mode(u16 mode, u16 *real_mode) -{ - int nmode, i; - struct card_info *card; - struct mode_info *mi; - - /* Drop the recalc bit if set */ - mode &= ~VIDEO_RECALC; - - /* Scan for mode based on fixed ID, position, or resolution */ - nmode = 0; - for (card = video_cards; card < video_cards_end; card++) { - mi = card->modes; - for (i = 0; i < card->nmodes; i++, mi++) { - int visible = mi->x || mi->y; - - if ((mode == nmode && visible) || - mode == mi->mode || - mode == (mi->y << 8)+mi->x) { - *real_mode = mi->mode; - return card->set_mode(mi); - } - - if (visible) - nmode++; - } - } - - /* Nothing found? Is it an "exceptional" (unprobed) mode? */ - for (card = video_cards; card < video_cards_end; card++) { - if (mode >= card->xmode_first && - mode < card->xmode_first+card->xmode_n) { - struct mode_info mix; - *real_mode = mix.mode = mode; - mix.x = mix.y = 0; - return card->set_mode(&mix); - } - } - - /* Otherwise, failure... */ - return -1; -} - -/* - * Recalculate the vertical video cutoff (hack!) - */ -static void vga_recalc_vertical(void) -{ - unsigned int font_size, rows; - u16 crtc; - u8 pt, ov; - - set_fs(0); - font_size = rdfs8(0x485); /* BIOS: font size (pixels) */ - rows = force_y ? force_y : rdfs8(0x484)+1; /* Text rows */ - - rows *= font_size; /* Visible scan lines */ - rows--; /* ... minus one */ - - crtc = vga_crtc(); - - pt = in_idx(crtc, 0x11); - pt &= ~0x80; /* Unlock CR0-7 */ - out_idx(pt, crtc, 0x11); - - out_idx((u8)rows, crtc, 0x12); /* Lower height register */ - - ov = in_idx(crtc, 0x07); /* Overflow register */ - ov &= 0xbd; - ov |= (rows >> (8-1)) & 0x02; - ov |= (rows >> (9-6)) & 0x40; - out_idx(ov, crtc, 0x07); -} - -/* Set mode (with recalc if specified) */ -int set_mode(u16 mode) -{ - int rv; - u16 real_mode; - - /* Very special mode numbers... */ - if (mode == VIDEO_CURRENT_MODE) - return 0; /* Nothing to do... */ - else if (mode == NORMAL_VGA) - mode = VIDEO_80x25; - else if (mode == EXTENDED_VGA) - mode = VIDEO_8POINT; - - rv = raw_set_mode(mode, &real_mode); - if (rv) - return rv; - - if (mode & VIDEO_RECALC) - vga_recalc_vertical(); - - /* Save the canonical mode number for the kernel, not - an alias, size specification or menu position */ -#ifndef _WAKEUP - boot_params.hdr.vid_mode = real_mode; -#endif - return 0; -} |