![Antonino A. Daplas](/assets/img/avatar_default.png)
Rearrange mode database entries such that preferred timings are entered first, and less preferred timings are entered last. (Detailed, VESA, established/standard). Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1313 lines
33 KiB
C
1313 lines
33 KiB
C
/*
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* linux/drivers/video/fbmon.c
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*
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* Copyright (C) 2002 James Simmons <jsimmons@users.sf.net>
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*
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* Credits:
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*
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* The EDID Parser is a conglomeration from the following sources:
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*
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* 1. SciTech SNAP Graphics Architecture
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* Copyright (C) 1991-2002 SciTech Software, Inc. All rights reserved.
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*
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* 2. XFree86 4.3.0, interpret_edid.c
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* Copyright 1998 by Egbert Eich <Egbert.Eich@Physik.TU-Darmstadt.DE>
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*
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* 3. John Fremlin <vii@users.sourceforge.net> and
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* Ani Joshi <ajoshi@unixbox.com>
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*
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* Generalized Timing Formula is derived from:
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*
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* GTF Spreadsheet by Andy Morrish (1/5/97)
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* available at http://www.vesa.org
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*
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*/
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#include <linux/tty.h>
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#include <linux/fb.h>
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#include <linux/module.h>
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#include <video/edid.h>
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#ifdef CONFIG_PPC_OF
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#include <linux/pci.h>
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#include <asm/prom.h>
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#include <asm/pci-bridge.h>
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#endif
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#include "edid.h"
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/*
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* EDID parser
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*/
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#undef DEBUG /* define this for verbose EDID parsing output */
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#ifdef DEBUG
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#define DPRINTK(fmt, args...) printk(fmt,## args)
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#else
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#define DPRINTK(fmt, args...)
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#endif
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#define FBMON_FIX_HEADER 1
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#define FBMON_FIX_INPUT 2
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#ifdef CONFIG_FB_MODE_HELPERS
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struct broken_edid {
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u8 manufacturer[4];
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u32 model;
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u32 fix;
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};
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static struct broken_edid brokendb[] = {
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/* DEC FR-PCXAV-YZ */
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{
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.manufacturer = "DEC",
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.model = 0x073a,
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.fix = FBMON_FIX_HEADER,
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},
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/* ViewSonic PF775a */
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{
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.manufacturer = "VSC",
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.model = 0x5a44,
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.fix = FBMON_FIX_INPUT,
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},
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};
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static const unsigned char edid_v1_header[] = { 0x00, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0x00
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};
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static void copy_string(unsigned char *c, unsigned char *s)
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{
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int i;
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c = c + 5;
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for (i = 0; (i < 13 && *c != 0x0A); i++)
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*(s++) = *(c++);
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*s = 0;
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while (i-- && (*--s == 0x20)) *s = 0;
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}
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static int check_edid(unsigned char *edid)
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{
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unsigned char *block = edid + ID_MANUFACTURER_NAME, manufacturer[4];
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unsigned char *b;
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u32 model;
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int i, fix = 0, ret = 0;
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manufacturer[0] = ((block[0] & 0x7c) >> 2) + '@';
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manufacturer[1] = ((block[0] & 0x03) << 3) +
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((block[1] & 0xe0) >> 5) + '@';
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manufacturer[2] = (block[1] & 0x1f) + '@';
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manufacturer[3] = 0;
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model = block[2] + (block[3] << 8);
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for (i = 0; i < ARRAY_SIZE(brokendb); i++) {
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if (!strncmp(manufacturer, brokendb[i].manufacturer, 4) &&
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brokendb[i].model == model) {
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printk("fbmon: The EDID Block of "
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"Manufacturer: %s Model: 0x%x is known to "
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"be broken,\n", manufacturer, model);
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fix = brokendb[i].fix;
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break;
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}
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}
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switch (fix) {
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case FBMON_FIX_HEADER:
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for (i = 0; i < 8; i++) {
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if (edid[i] != edid_v1_header[i])
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ret = fix;
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}
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break;
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case FBMON_FIX_INPUT:
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b = edid + EDID_STRUCT_DISPLAY;
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/* Only if display is GTF capable will
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the input type be reset to analog */
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if (b[4] & 0x01 && b[0] & 0x80)
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ret = fix;
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break;
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}
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return ret;
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}
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static void fix_edid(unsigned char *edid, int fix)
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{
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unsigned char *b;
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switch (fix) {
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case FBMON_FIX_HEADER:
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printk("fbmon: trying a header reconstruct\n");
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memcpy(edid, edid_v1_header, 8);
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break;
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case FBMON_FIX_INPUT:
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printk("fbmon: trying to fix input type\n");
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b = edid + EDID_STRUCT_DISPLAY;
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b[0] &= ~0x80;
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edid[127] += 0x80;
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}
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}
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static int edid_checksum(unsigned char *edid)
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{
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unsigned char i, csum = 0, all_null = 0;
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int err = 0, fix = check_edid(edid);
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if (fix)
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fix_edid(edid, fix);
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for (i = 0; i < EDID_LENGTH; i++) {
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csum += edid[i];
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all_null |= edid[i];
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}
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if (csum == 0x00 && all_null) {
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/* checksum passed, everything's good */
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err = 1;
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}
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return err;
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}
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static int edid_check_header(unsigned char *edid)
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{
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int i, err = 1, fix = check_edid(edid);
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if (fix)
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fix_edid(edid, fix);
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for (i = 0; i < 8; i++) {
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if (edid[i] != edid_v1_header[i])
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err = 0;
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}
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return err;
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}
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static void parse_vendor_block(unsigned char *block, struct fb_monspecs *specs)
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{
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specs->manufacturer[0] = ((block[0] & 0x7c) >> 2) + '@';
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specs->manufacturer[1] = ((block[0] & 0x03) << 3) +
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((block[1] & 0xe0) >> 5) + '@';
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specs->manufacturer[2] = (block[1] & 0x1f) + '@';
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specs->manufacturer[3] = 0;
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specs->model = block[2] + (block[3] << 8);
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specs->serial = block[4] + (block[5] << 8) +
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(block[6] << 16) + (block[7] << 24);
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specs->year = block[9] + 1990;
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specs->week = block[8];
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DPRINTK(" Manufacturer: %s\n", specs->manufacturer);
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DPRINTK(" Model: %x\n", specs->model);
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DPRINTK(" Serial#: %u\n", specs->serial);
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DPRINTK(" Year: %u Week %u\n", specs->year, specs->week);
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}
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static void get_dpms_capabilities(unsigned char flags,
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struct fb_monspecs *specs)
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{
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specs->dpms = 0;
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if (flags & DPMS_ACTIVE_OFF)
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specs->dpms |= FB_DPMS_ACTIVE_OFF;
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if (flags & DPMS_SUSPEND)
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specs->dpms |= FB_DPMS_SUSPEND;
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if (flags & DPMS_STANDBY)
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specs->dpms |= FB_DPMS_STANDBY;
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DPRINTK(" DPMS: Active %s, Suspend %s, Standby %s\n",
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(flags & DPMS_ACTIVE_OFF) ? "yes" : "no",
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(flags & DPMS_SUSPEND) ? "yes" : "no",
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(flags & DPMS_STANDBY) ? "yes" : "no");
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}
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static void get_chroma(unsigned char *block, struct fb_monspecs *specs)
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{
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int tmp;
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DPRINTK(" Chroma\n");
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/* Chromaticity data */
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tmp = ((block[5] & (3 << 6)) >> 6) | (block[0x7] << 2);
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tmp *= 1000;
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tmp += 512;
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specs->chroma.redx = tmp/1024;
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DPRINTK(" RedX: 0.%03d ", specs->chroma.redx);
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tmp = ((block[5] & (3 << 4)) >> 4) | (block[0x8] << 2);
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tmp *= 1000;
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tmp += 512;
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specs->chroma.redy = tmp/1024;
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DPRINTK("RedY: 0.%03d\n", specs->chroma.redy);
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tmp = ((block[5] & (3 << 2)) >> 2) | (block[0x9] << 2);
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tmp *= 1000;
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tmp += 512;
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specs->chroma.greenx = tmp/1024;
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DPRINTK(" GreenX: 0.%03d ", specs->chroma.greenx);
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tmp = (block[5] & 3) | (block[0xa] << 2);
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tmp *= 1000;
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tmp += 512;
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specs->chroma.greeny = tmp/1024;
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DPRINTK("GreenY: 0.%03d\n", specs->chroma.greeny);
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tmp = ((block[6] & (3 << 6)) >> 6) | (block[0xb] << 2);
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tmp *= 1000;
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tmp += 512;
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specs->chroma.bluex = tmp/1024;
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DPRINTK(" BlueX: 0.%03d ", specs->chroma.bluex);
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tmp = ((block[6] & (3 << 4)) >> 4) | (block[0xc] << 2);
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tmp *= 1000;
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tmp += 512;
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specs->chroma.bluey = tmp/1024;
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DPRINTK("BlueY: 0.%03d\n", specs->chroma.bluey);
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tmp = ((block[6] & (3 << 2)) >> 2) | (block[0xd] << 2);
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tmp *= 1000;
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tmp += 512;
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specs->chroma.whitex = tmp/1024;
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DPRINTK(" WhiteX: 0.%03d ", specs->chroma.whitex);
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tmp = (block[6] & 3) | (block[0xe] << 2);
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tmp *= 1000;
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tmp += 512;
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specs->chroma.whitey = tmp/1024;
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DPRINTK("WhiteY: 0.%03d\n", specs->chroma.whitey);
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}
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static int edid_is_serial_block(unsigned char *block)
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{
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if ((block[0] == 0x00) && (block[1] == 0x00) &&
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(block[2] == 0x00) && (block[3] == 0xff) &&
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(block[4] == 0x00))
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return 1;
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else
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return 0;
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}
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static int edid_is_ascii_block(unsigned char *block)
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{
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if ((block[0] == 0x00) && (block[1] == 0x00) &&
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(block[2] == 0x00) && (block[3] == 0xfe) &&
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(block[4] == 0x00))
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return 1;
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else
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return 0;
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}
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static int edid_is_limits_block(unsigned char *block)
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{
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if ((block[0] == 0x00) && (block[1] == 0x00) &&
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(block[2] == 0x00) && (block[3] == 0xfd) &&
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(block[4] == 0x00))
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return 1;
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else
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return 0;
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}
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static int edid_is_monitor_block(unsigned char *block)
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{
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if ((block[0] == 0x00) && (block[1] == 0x00) &&
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(block[2] == 0x00) && (block[3] == 0xfc) &&
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(block[4] == 0x00))
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return 1;
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else
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return 0;
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}
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static void calc_mode_timings(int xres, int yres, int refresh,
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struct fb_videomode *mode)
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{
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struct fb_var_screeninfo var;
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struct fb_info info;
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memset(&var, 0, sizeof(struct fb_var_screeninfo));
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var.xres = xres;
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var.yres = yres;
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fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON,
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refresh, &var, &info);
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mode->xres = xres;
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mode->yres = yres;
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mode->pixclock = var.pixclock;
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mode->refresh = refresh;
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mode->left_margin = var.left_margin;
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mode->right_margin = var.right_margin;
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mode->upper_margin = var.upper_margin;
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mode->lower_margin = var.lower_margin;
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mode->hsync_len = var.hsync_len;
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mode->vsync_len = var.vsync_len;
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mode->vmode = 0;
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mode->sync = 0;
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}
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static int get_est_timing(unsigned char *block, struct fb_videomode *mode)
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{
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int num = 0;
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unsigned char c;
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c = block[0];
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if (c&0x80) {
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calc_mode_timings(720, 400, 70, &mode[num]);
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mode[num++].flag = FB_MODE_IS_CALCULATED;
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DPRINTK(" 720x400@70Hz\n");
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}
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if (c&0x40) {
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calc_mode_timings(720, 400, 88, &mode[num]);
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mode[num++].flag = FB_MODE_IS_CALCULATED;
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DPRINTK(" 720x400@88Hz\n");
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}
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if (c&0x20) {
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mode[num++] = vesa_modes[3];
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DPRINTK(" 640x480@60Hz\n");
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}
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if (c&0x10) {
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calc_mode_timings(640, 480, 67, &mode[num]);
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mode[num++].flag = FB_MODE_IS_CALCULATED;
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DPRINTK(" 640x480@67Hz\n");
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}
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if (c&0x08) {
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mode[num++] = vesa_modes[4];
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DPRINTK(" 640x480@72Hz\n");
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}
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if (c&0x04) {
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mode[num++] = vesa_modes[5];
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DPRINTK(" 640x480@75Hz\n");
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}
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if (c&0x02) {
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mode[num++] = vesa_modes[7];
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DPRINTK(" 800x600@56Hz\n");
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}
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if (c&0x01) {
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mode[num++] = vesa_modes[8];
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DPRINTK(" 800x600@60Hz\n");
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}
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c = block[1];
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if (c&0x80) {
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mode[num++] = vesa_modes[9];
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DPRINTK(" 800x600@72Hz\n");
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}
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if (c&0x40) {
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mode[num++] = vesa_modes[10];
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DPRINTK(" 800x600@75Hz\n");
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}
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if (c&0x20) {
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calc_mode_timings(832, 624, 75, &mode[num]);
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mode[num++].flag = FB_MODE_IS_CALCULATED;
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DPRINTK(" 832x624@75Hz\n");
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}
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if (c&0x10) {
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mode[num++] = vesa_modes[12];
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DPRINTK(" 1024x768@87Hz Interlaced\n");
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}
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if (c&0x08) {
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mode[num++] = vesa_modes[13];
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DPRINTK(" 1024x768@60Hz\n");
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}
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if (c&0x04) {
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mode[num++] = vesa_modes[14];
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DPRINTK(" 1024x768@70Hz\n");
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}
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if (c&0x02) {
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mode[num++] = vesa_modes[15];
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DPRINTK(" 1024x768@75Hz\n");
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}
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if (c&0x01) {
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mode[num++] = vesa_modes[21];
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DPRINTK(" 1280x1024@75Hz\n");
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}
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c = block[2];
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if (c&0x80) {
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mode[num++] = vesa_modes[17];
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DPRINTK(" 1152x870@75Hz\n");
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}
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DPRINTK(" Manufacturer's mask: %x\n",c&0x7F);
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return num;
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}
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static int get_std_timing(unsigned char *block, struct fb_videomode *mode)
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{
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int xres, yres = 0, refresh, ratio, i;
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xres = (block[0] + 31) * 8;
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if (xres <= 256)
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return 0;
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ratio = (block[1] & 0xc0) >> 6;
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switch (ratio) {
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case 0:
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yres = xres;
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break;
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case 1:
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yres = (xres * 3)/4;
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break;
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case 2:
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yres = (xres * 4)/5;
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break;
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case 3:
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yres = (xres * 9)/16;
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break;
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}
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refresh = (block[1] & 0x3f) + 60;
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DPRINTK(" %dx%d@%dHz\n", xres, yres, refresh);
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for (i = 0; i < VESA_MODEDB_SIZE; i++) {
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if (vesa_modes[i].xres == xres &&
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vesa_modes[i].yres == yres &&
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vesa_modes[i].refresh == refresh) {
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*mode = vesa_modes[i];
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mode->flag |= FB_MODE_IS_STANDARD;
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return 1;
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}
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}
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calc_mode_timings(xres, yres, refresh, mode);
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return 1;
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}
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static int get_dst_timing(unsigned char *block,
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struct fb_videomode *mode)
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{
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int j, num = 0;
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for (j = 0; j < 6; j++, block+= STD_TIMING_DESCRIPTION_SIZE)
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num += get_std_timing(block, &mode[num]);
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return num;
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}
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static void get_detailed_timing(unsigned char *block,
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struct fb_videomode *mode)
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{
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mode->xres = H_ACTIVE;
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mode->yres = V_ACTIVE;
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mode->pixclock = PIXEL_CLOCK;
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mode->pixclock /= 1000;
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mode->pixclock = KHZ2PICOS(mode->pixclock);
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mode->right_margin = H_SYNC_OFFSET;
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mode->left_margin = (H_ACTIVE + H_BLANKING) -
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(H_ACTIVE + H_SYNC_OFFSET + H_SYNC_WIDTH);
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mode->upper_margin = V_BLANKING - V_SYNC_OFFSET -
|
|
V_SYNC_WIDTH;
|
|
mode->lower_margin = V_SYNC_OFFSET;
|
|
mode->hsync_len = H_SYNC_WIDTH;
|
|
mode->vsync_len = V_SYNC_WIDTH;
|
|
if (HSYNC_POSITIVE)
|
|
mode->sync |= FB_SYNC_HOR_HIGH_ACT;
|
|
if (VSYNC_POSITIVE)
|
|
mode->sync |= FB_SYNC_VERT_HIGH_ACT;
|
|
mode->refresh = PIXEL_CLOCK/((H_ACTIVE + H_BLANKING) *
|
|
(V_ACTIVE + V_BLANKING));
|
|
mode->vmode = 0;
|
|
mode->flag = FB_MODE_IS_DETAILED;
|
|
|
|
DPRINTK(" %d MHz ", PIXEL_CLOCK/1000000);
|
|
DPRINTK("%d %d %d %d ", H_ACTIVE, H_ACTIVE + H_SYNC_OFFSET,
|
|
H_ACTIVE + H_SYNC_OFFSET + H_SYNC_WIDTH, H_ACTIVE + H_BLANKING);
|
|
DPRINTK("%d %d %d %d ", V_ACTIVE, V_ACTIVE + V_SYNC_OFFSET,
|
|
V_ACTIVE + V_SYNC_OFFSET + V_SYNC_WIDTH, V_ACTIVE + V_BLANKING);
|
|
DPRINTK("%sHSync %sVSync\n\n", (HSYNC_POSITIVE) ? "+" : "-",
|
|
(VSYNC_POSITIVE) ? "+" : "-");
|
|
}
|
|
|
|
/**
|
|
* fb_create_modedb - create video mode database
|
|
* @edid: EDID data
|
|
* @dbsize: database size
|
|
*
|
|
* RETURNS: struct fb_videomode, @dbsize contains length of database
|
|
*
|
|
* DESCRIPTION:
|
|
* This function builds a mode database using the contents of the EDID
|
|
* data
|
|
*/
|
|
static struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize)
|
|
{
|
|
struct fb_videomode *mode, *m;
|
|
unsigned char *block;
|
|
int num = 0, i;
|
|
|
|
mode = kmalloc(50 * sizeof(struct fb_videomode), GFP_KERNEL);
|
|
if (mode == NULL)
|
|
return NULL;
|
|
memset(mode, 0, 50 * sizeof(struct fb_videomode));
|
|
|
|
if (edid == NULL || !edid_checksum(edid) ||
|
|
!edid_check_header(edid)) {
|
|
kfree(mode);
|
|
return NULL;
|
|
}
|
|
|
|
*dbsize = 0;
|
|
|
|
DPRINTK(" Detailed Timings\n");
|
|
block = edid + DETAILED_TIMING_DESCRIPTIONS_START;
|
|
for (i = 0; i < 4; i++, block+= DETAILED_TIMING_DESCRIPTION_SIZE) {
|
|
int first = 1;
|
|
|
|
if (!(block[0] == 0x00 && block[1] == 0x00)) {
|
|
get_detailed_timing(block, &mode[num]);
|
|
if (first) {
|
|
mode[num].flag |= FB_MODE_IS_FIRST;
|
|
first = 0;
|
|
}
|
|
num++;
|
|
}
|
|
}
|
|
|
|
DPRINTK(" Supported VESA Modes\n");
|
|
block = edid + ESTABLISHED_TIMING_1;
|
|
num += get_est_timing(block, &mode[num]);
|
|
|
|
DPRINTK(" Standard Timings\n");
|
|
block = edid + STD_TIMING_DESCRIPTIONS_START;
|
|
for (i = 0; i < STD_TIMING; i++, block += STD_TIMING_DESCRIPTION_SIZE)
|
|
num += get_std_timing(block, &mode[num]);
|
|
|
|
block = edid + DETAILED_TIMING_DESCRIPTIONS_START;
|
|
for (i = 0; i < 4; i++, block+= DETAILED_TIMING_DESCRIPTION_SIZE) {
|
|
if (block[0] == 0x00 && block[1] == 0x00 && block[3] == 0xfa)
|
|
num += get_dst_timing(block + 5, &mode[num]);
|
|
}
|
|
|
|
/* Yikes, EDID data is totally useless */
|
|
if (!num) {
|
|
kfree(mode);
|
|
return NULL;
|
|
}
|
|
|
|
*dbsize = num;
|
|
m = kmalloc(num * sizeof(struct fb_videomode), GFP_KERNEL);
|
|
if (!m)
|
|
return mode;
|
|
memmove(m, mode, num * sizeof(struct fb_videomode));
|
|
kfree(mode);
|
|
return m;
|
|
}
|
|
|
|
/**
|
|
* fb_destroy_modedb - destroys mode database
|
|
* @modedb: mode database to destroy
|
|
*
|
|
* DESCRIPTION:
|
|
* Destroy mode database created by fb_create_modedb
|
|
*/
|
|
void fb_destroy_modedb(struct fb_videomode *modedb)
|
|
{
|
|
kfree(modedb);
|
|
}
|
|
|
|
static int fb_get_monitor_limits(unsigned char *edid, struct fb_monspecs *specs)
|
|
{
|
|
int i, retval = 1;
|
|
unsigned char *block;
|
|
|
|
block = edid + DETAILED_TIMING_DESCRIPTIONS_START;
|
|
|
|
DPRINTK(" Monitor Operating Limits: ");
|
|
for (i = 0; i < 4; i++, block += DETAILED_TIMING_DESCRIPTION_SIZE) {
|
|
if (edid_is_limits_block(block)) {
|
|
specs->hfmin = H_MIN_RATE * 1000;
|
|
specs->hfmax = H_MAX_RATE * 1000;
|
|
specs->vfmin = V_MIN_RATE;
|
|
specs->vfmax = V_MAX_RATE;
|
|
specs->dclkmax = MAX_PIXEL_CLOCK * 1000000;
|
|
specs->gtf = (GTF_SUPPORT) ? 1 : 0;
|
|
retval = 0;
|
|
DPRINTK("From EDID\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* estimate monitor limits based on modes supported */
|
|
if (retval) {
|
|
struct fb_videomode *modes;
|
|
int num_modes, i, hz, hscan, pixclock;
|
|
|
|
modes = fb_create_modedb(edid, &num_modes);
|
|
if (!modes) {
|
|
DPRINTK("None Available\n");
|
|
return 1;
|
|
}
|
|
|
|
retval = 0;
|
|
for (i = 0; i < num_modes; i++) {
|
|
hz = modes[i].refresh;
|
|
pixclock = PICOS2KHZ(modes[i].pixclock) * 1000;
|
|
hscan = (modes[i].yres * 105 * hz + 5000)/100;
|
|
|
|
if (specs->dclkmax == 0 || specs->dclkmax < pixclock)
|
|
specs->dclkmax = pixclock;
|
|
if (specs->dclkmin == 0 || specs->dclkmin > pixclock)
|
|
specs->dclkmin = pixclock;
|
|
if (specs->hfmax == 0 || specs->hfmax < hscan)
|
|
specs->hfmax = hscan;
|
|
if (specs->hfmin == 0 || specs->hfmin > hscan)
|
|
specs->hfmin = hscan;
|
|
if (specs->vfmax == 0 || specs->vfmax < hz)
|
|
specs->vfmax = hz;
|
|
if (specs->vfmin == 0 || specs->vfmin > hz)
|
|
specs->vfmin = hz;
|
|
}
|
|
DPRINTK("Extrapolated\n");
|
|
fb_destroy_modedb(modes);
|
|
}
|
|
DPRINTK(" H: %d-%dKHz V: %d-%dHz DCLK: %dMHz\n",
|
|
specs->hfmin/1000, specs->hfmax/1000, specs->vfmin,
|
|
specs->vfmax, specs->dclkmax/1000000);
|
|
return retval;
|
|
}
|
|
|
|
static void get_monspecs(unsigned char *edid, struct fb_monspecs *specs)
|
|
{
|
|
unsigned char c, *block;
|
|
|
|
block = edid + EDID_STRUCT_DISPLAY;
|
|
|
|
fb_get_monitor_limits(edid, specs);
|
|
|
|
c = block[0] & 0x80;
|
|
specs->input = 0;
|
|
if (c) {
|
|
specs->input |= FB_DISP_DDI;
|
|
DPRINTK(" Digital Display Input");
|
|
} else {
|
|
DPRINTK(" Analog Display Input: Input Voltage - ");
|
|
switch ((block[0] & 0x60) >> 5) {
|
|
case 0:
|
|
DPRINTK("0.700V/0.300V");
|
|
specs->input |= FB_DISP_ANA_700_300;
|
|
break;
|
|
case 1:
|
|
DPRINTK("0.714V/0.286V");
|
|
specs->input |= FB_DISP_ANA_714_286;
|
|
break;
|
|
case 2:
|
|
DPRINTK("1.000V/0.400V");
|
|
specs->input |= FB_DISP_ANA_1000_400;
|
|
break;
|
|
case 3:
|
|
DPRINTK("0.700V/0.000V");
|
|
specs->input |= FB_DISP_ANA_700_000;
|
|
break;
|
|
}
|
|
}
|
|
DPRINTK("\n Sync: ");
|
|
c = block[0] & 0x10;
|
|
if (c)
|
|
DPRINTK(" Configurable signal level\n");
|
|
c = block[0] & 0x0f;
|
|
specs->signal = 0;
|
|
if (c & 0x10) {
|
|
DPRINTK("Blank to Blank ");
|
|
specs->signal |= FB_SIGNAL_BLANK_BLANK;
|
|
}
|
|
if (c & 0x08) {
|
|
DPRINTK("Separate ");
|
|
specs->signal |= FB_SIGNAL_SEPARATE;
|
|
}
|
|
if (c & 0x04) {
|
|
DPRINTK("Composite ");
|
|
specs->signal |= FB_SIGNAL_COMPOSITE;
|
|
}
|
|
if (c & 0x02) {
|
|
DPRINTK("Sync on Green ");
|
|
specs->signal |= FB_SIGNAL_SYNC_ON_GREEN;
|
|
}
|
|
if (c & 0x01) {
|
|
DPRINTK("Serration on ");
|
|
specs->signal |= FB_SIGNAL_SERRATION_ON;
|
|
}
|
|
DPRINTK("\n");
|
|
specs->max_x = block[1];
|
|
specs->max_y = block[2];
|
|
DPRINTK(" Max H-size in cm: ");
|
|
if (specs->max_x)
|
|
DPRINTK("%d\n", specs->max_x);
|
|
else
|
|
DPRINTK("variable\n");
|
|
DPRINTK(" Max V-size in cm: ");
|
|
if (specs->max_y)
|
|
DPRINTK("%d\n", specs->max_y);
|
|
else
|
|
DPRINTK("variable\n");
|
|
|
|
c = block[3];
|
|
specs->gamma = c+100;
|
|
DPRINTK(" Gamma: ");
|
|
DPRINTK("%d.%d\n", specs->gamma/100, specs->gamma % 100);
|
|
|
|
get_dpms_capabilities(block[4], specs);
|
|
|
|
switch ((block[4] & 0x18) >> 3) {
|
|
case 0:
|
|
DPRINTK(" Monochrome/Grayscale\n");
|
|
specs->input |= FB_DISP_MONO;
|
|
break;
|
|
case 1:
|
|
DPRINTK(" RGB Color Display\n");
|
|
specs->input |= FB_DISP_RGB;
|
|
break;
|
|
case 2:
|
|
DPRINTK(" Non-RGB Multicolor Display\n");
|
|
specs->input |= FB_DISP_MULTI;
|
|
break;
|
|
default:
|
|
DPRINTK(" Unknown\n");
|
|
specs->input |= FB_DISP_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
get_chroma(block, specs);
|
|
|
|
specs->misc = 0;
|
|
c = block[4] & 0x7;
|
|
if (c & 0x04) {
|
|
DPRINTK(" Default color format is primary\n");
|
|
specs->misc |= FB_MISC_PRIM_COLOR;
|
|
}
|
|
if (c & 0x02) {
|
|
DPRINTK(" First DETAILED Timing is preferred\n");
|
|
specs->misc |= FB_MISC_1ST_DETAIL;
|
|
}
|
|
if (c & 0x01) {
|
|
printk(" Display is GTF capable\n");
|
|
specs->gtf = 1;
|
|
}
|
|
}
|
|
|
|
static int edid_is_timing_block(unsigned char *block)
|
|
{
|
|
if ((block[0] != 0x00) || (block[1] != 0x00) ||
|
|
(block[2] != 0x00) || (block[4] != 0x00))
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var)
|
|
{
|
|
int i;
|
|
unsigned char *block;
|
|
|
|
if (edid == NULL || var == NULL)
|
|
return 1;
|
|
|
|
if (!(edid_checksum(edid)))
|
|
return 1;
|
|
|
|
if (!(edid_check_header(edid)))
|
|
return 1;
|
|
|
|
block = edid + DETAILED_TIMING_DESCRIPTIONS_START;
|
|
|
|
for (i = 0; i < 4; i++, block += DETAILED_TIMING_DESCRIPTION_SIZE) {
|
|
if (edid_is_timing_block(block)) {
|
|
var->xres = var->xres_virtual = H_ACTIVE;
|
|
var->yres = var->yres_virtual = V_ACTIVE;
|
|
var->height = var->width = -1;
|
|
var->right_margin = H_SYNC_OFFSET;
|
|
var->left_margin = (H_ACTIVE + H_BLANKING) -
|
|
(H_ACTIVE + H_SYNC_OFFSET + H_SYNC_WIDTH);
|
|
var->upper_margin = V_BLANKING - V_SYNC_OFFSET -
|
|
V_SYNC_WIDTH;
|
|
var->lower_margin = V_SYNC_OFFSET;
|
|
var->hsync_len = H_SYNC_WIDTH;
|
|
var->vsync_len = V_SYNC_WIDTH;
|
|
var->pixclock = PIXEL_CLOCK;
|
|
var->pixclock /= 1000;
|
|
var->pixclock = KHZ2PICOS(var->pixclock);
|
|
|
|
if (HSYNC_POSITIVE)
|
|
var->sync |= FB_SYNC_HOR_HIGH_ACT;
|
|
if (VSYNC_POSITIVE)
|
|
var->sync |= FB_SYNC_VERT_HIGH_ACT;
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs)
|
|
{
|
|
unsigned char *block;
|
|
int i, found = 0;
|
|
|
|
if (edid == NULL)
|
|
return;
|
|
|
|
if (!(edid_checksum(edid)))
|
|
return;
|
|
|
|
if (!(edid_check_header(edid)))
|
|
return;
|
|
|
|
memset(specs, 0, sizeof(struct fb_monspecs));
|
|
|
|
specs->version = edid[EDID_STRUCT_VERSION];
|
|
specs->revision = edid[EDID_STRUCT_REVISION];
|
|
|
|
DPRINTK("========================================\n");
|
|
DPRINTK("Display Information (EDID)\n");
|
|
DPRINTK("========================================\n");
|
|
DPRINTK(" EDID Version %d.%d\n", (int) specs->version,
|
|
(int) specs->revision);
|
|
|
|
parse_vendor_block(edid + ID_MANUFACTURER_NAME, specs);
|
|
|
|
block = edid + DETAILED_TIMING_DESCRIPTIONS_START;
|
|
for (i = 0; i < 4; i++, block += DETAILED_TIMING_DESCRIPTION_SIZE) {
|
|
if (edid_is_serial_block(block)) {
|
|
copy_string(block, specs->serial_no);
|
|
DPRINTK(" Serial Number: %s\n", specs->serial_no);
|
|
} else if (edid_is_ascii_block(block)) {
|
|
copy_string(block, specs->ascii);
|
|
DPRINTK(" ASCII Block: %s\n", specs->ascii);
|
|
} else if (edid_is_monitor_block(block)) {
|
|
copy_string(block, specs->monitor);
|
|
DPRINTK(" Monitor Name: %s\n", specs->monitor);
|
|
}
|
|
}
|
|
|
|
DPRINTK(" Display Characteristics:\n");
|
|
get_monspecs(edid, specs);
|
|
|
|
specs->modedb = fb_create_modedb(edid, &specs->modedb_len);
|
|
|
|
/*
|
|
* Workaround for buggy EDIDs that sets that the first
|
|
* detailed timing is preferred but has not detailed
|
|
* timing specified
|
|
*/
|
|
for (i = 0; i < specs->modedb_len; i++) {
|
|
if (specs->modedb[i].flag & FB_MODE_IS_DETAILED) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found)
|
|
specs->misc &= ~FB_MISC_1ST_DETAIL;
|
|
|
|
DPRINTK("========================================\n");
|
|
}
|
|
|
|
/*
|
|
* VESA Generalized Timing Formula (GTF)
|
|
*/
|
|
|
|
#define FLYBACK 550
|
|
#define V_FRONTPORCH 1
|
|
#define H_OFFSET 40
|
|
#define H_SCALEFACTOR 20
|
|
#define H_BLANKSCALE 128
|
|
#define H_GRADIENT 600
|
|
#define C_VAL 30
|
|
#define M_VAL 300
|
|
|
|
struct __fb_timings {
|
|
u32 dclk;
|
|
u32 hfreq;
|
|
u32 vfreq;
|
|
u32 hactive;
|
|
u32 vactive;
|
|
u32 hblank;
|
|
u32 vblank;
|
|
u32 htotal;
|
|
u32 vtotal;
|
|
};
|
|
|
|
/**
|
|
* fb_get_vblank - get vertical blank time
|
|
* @hfreq: horizontal freq
|
|
*
|
|
* DESCRIPTION:
|
|
* vblank = right_margin + vsync_len + left_margin
|
|
*
|
|
* given: right_margin = 1 (V_FRONTPORCH)
|
|
* vsync_len = 3
|
|
* flyback = 550
|
|
*
|
|
* flyback * hfreq
|
|
* left_margin = --------------- - vsync_len
|
|
* 1000000
|
|
*/
|
|
static u32 fb_get_vblank(u32 hfreq)
|
|
{
|
|
u32 vblank;
|
|
|
|
vblank = (hfreq * FLYBACK)/1000;
|
|
vblank = (vblank + 500)/1000;
|
|
return (vblank + V_FRONTPORCH);
|
|
}
|
|
|
|
/**
|
|
* fb_get_hblank_by_freq - get horizontal blank time given hfreq
|
|
* @hfreq: horizontal freq
|
|
* @xres: horizontal resolution in pixels
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* xres * duty_cycle
|
|
* hblank = ------------------
|
|
* 100 - duty_cycle
|
|
*
|
|
* duty cycle = percent of htotal assigned to inactive display
|
|
* duty cycle = C - (M/Hfreq)
|
|
*
|
|
* where: C = ((offset - scale factor) * blank_scale)
|
|
* -------------------------------------- + scale factor
|
|
* 256
|
|
* M = blank_scale * gradient
|
|
*
|
|
*/
|
|
static u32 fb_get_hblank_by_hfreq(u32 hfreq, u32 xres)
|
|
{
|
|
u32 c_val, m_val, duty_cycle, hblank;
|
|
|
|
c_val = (((H_OFFSET - H_SCALEFACTOR) * H_BLANKSCALE)/256 +
|
|
H_SCALEFACTOR) * 1000;
|
|
m_val = (H_BLANKSCALE * H_GRADIENT)/256;
|
|
m_val = (m_val * 1000000)/hfreq;
|
|
duty_cycle = c_val - m_val;
|
|
hblank = (xres * duty_cycle)/(100000 - duty_cycle);
|
|
return (hblank);
|
|
}
|
|
|
|
/**
|
|
* fb_get_hblank_by_dclk - get horizontal blank time given pixelclock
|
|
* @dclk: pixelclock in Hz
|
|
* @xres: horizontal resolution in pixels
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* xres * duty_cycle
|
|
* hblank = ------------------
|
|
* 100 - duty_cycle
|
|
*
|
|
* duty cycle = percent of htotal assigned to inactive display
|
|
* duty cycle = C - (M * h_period)
|
|
*
|
|
* where: h_period = SQRT(100 - C + (0.4 * xres * M)/dclk) + C - 100
|
|
* -----------------------------------------------
|
|
* 2 * M
|
|
* M = 300;
|
|
* C = 30;
|
|
|
|
*/
|
|
static u32 fb_get_hblank_by_dclk(u32 dclk, u32 xres)
|
|
{
|
|
u32 duty_cycle, h_period, hblank;
|
|
|
|
dclk /= 1000;
|
|
h_period = 100 - C_VAL;
|
|
h_period *= h_period;
|
|
h_period += (M_VAL * xres * 2 * 1000)/(5 * dclk);
|
|
h_period *=10000;
|
|
|
|
h_period = int_sqrt(h_period);
|
|
h_period -= (100 - C_VAL) * 100;
|
|
h_period *= 1000;
|
|
h_period /= 2 * M_VAL;
|
|
|
|
duty_cycle = C_VAL * 1000 - (M_VAL * h_period)/100;
|
|
hblank = (xres * duty_cycle)/(100000 - duty_cycle) + 8;
|
|
hblank &= ~15;
|
|
return (hblank);
|
|
}
|
|
|
|
/**
|
|
* fb_get_hfreq - estimate hsync
|
|
* @vfreq: vertical refresh rate
|
|
* @yres: vertical resolution
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* (yres + front_port) * vfreq * 1000000
|
|
* hfreq = -------------------------------------
|
|
* (1000000 - (vfreq * FLYBACK)
|
|
*
|
|
*/
|
|
|
|
static u32 fb_get_hfreq(u32 vfreq, u32 yres)
|
|
{
|
|
u32 divisor, hfreq;
|
|
|
|
divisor = (1000000 - (vfreq * FLYBACK))/1000;
|
|
hfreq = (yres + V_FRONTPORCH) * vfreq * 1000;
|
|
return (hfreq/divisor);
|
|
}
|
|
|
|
static void fb_timings_vfreq(struct __fb_timings *timings)
|
|
{
|
|
timings->hfreq = fb_get_hfreq(timings->vfreq, timings->vactive);
|
|
timings->vblank = fb_get_vblank(timings->hfreq);
|
|
timings->vtotal = timings->vactive + timings->vblank;
|
|
timings->hblank = fb_get_hblank_by_hfreq(timings->hfreq,
|
|
timings->hactive);
|
|
timings->htotal = timings->hactive + timings->hblank;
|
|
timings->dclk = timings->htotal * timings->hfreq;
|
|
}
|
|
|
|
static void fb_timings_hfreq(struct __fb_timings *timings)
|
|
{
|
|
timings->vblank = fb_get_vblank(timings->hfreq);
|
|
timings->vtotal = timings->vactive + timings->vblank;
|
|
timings->vfreq = timings->hfreq/timings->vtotal;
|
|
timings->hblank = fb_get_hblank_by_hfreq(timings->hfreq,
|
|
timings->hactive);
|
|
timings->htotal = timings->hactive + timings->hblank;
|
|
timings->dclk = timings->htotal * timings->hfreq;
|
|
}
|
|
|
|
static void fb_timings_dclk(struct __fb_timings *timings)
|
|
{
|
|
timings->hblank = fb_get_hblank_by_dclk(timings->dclk,
|
|
timings->hactive);
|
|
timings->htotal = timings->hactive + timings->hblank;
|
|
timings->hfreq = timings->dclk/timings->htotal;
|
|
timings->vblank = fb_get_vblank(timings->hfreq);
|
|
timings->vtotal = timings->vactive + timings->vblank;
|
|
timings->vfreq = timings->hfreq/timings->vtotal;
|
|
}
|
|
|
|
/*
|
|
* fb_get_mode - calculates video mode using VESA GTF
|
|
* @flags: if: 0 - maximize vertical refresh rate
|
|
* 1 - vrefresh-driven calculation;
|
|
* 2 - hscan-driven calculation;
|
|
* 3 - pixelclock-driven calculation;
|
|
* @val: depending on @flags, ignored, vrefresh, hsync or pixelclock
|
|
* @var: pointer to fb_var_screeninfo
|
|
* @info: pointer to fb_info
|
|
*
|
|
* DESCRIPTION:
|
|
* Calculates video mode based on monitor specs using VESA GTF.
|
|
* The GTF is best for VESA GTF compliant monitors but is
|
|
* specifically formulated to work for older monitors as well.
|
|
*
|
|
* If @flag==0, the function will attempt to maximize the
|
|
* refresh rate. Otherwise, it will calculate timings based on
|
|
* the flag and accompanying value.
|
|
*
|
|
* If FB_IGNOREMON bit is set in @flags, monitor specs will be
|
|
* ignored and @var will be filled with the calculated timings.
|
|
*
|
|
* All calculations are based on the VESA GTF Spreadsheet
|
|
* available at VESA's public ftp (http://www.vesa.org).
|
|
*
|
|
* NOTES:
|
|
* The timings generated by the GTF will be different from VESA
|
|
* DMT. It might be a good idea to keep a table of standard
|
|
* VESA modes as well. The GTF may also not work for some displays,
|
|
* such as, and especially, analog TV.
|
|
*
|
|
* REQUIRES:
|
|
* A valid info->monspecs, otherwise 'safe numbers' will be used.
|
|
*/
|
|
int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, struct fb_info *info)
|
|
{
|
|
struct __fb_timings timings;
|
|
u32 interlace = 1, dscan = 1;
|
|
u32 hfmin, hfmax, vfmin, vfmax, dclkmin, dclkmax;
|
|
|
|
/*
|
|
* If monspecs are invalid, use values that are enough
|
|
* for 640x480@60
|
|
*/
|
|
if (!info->monspecs.hfmax || !info->monspecs.vfmax ||
|
|
!info->monspecs.dclkmax ||
|
|
info->monspecs.hfmax < info->monspecs.hfmin ||
|
|
info->monspecs.vfmax < info->monspecs.vfmin ||
|
|
info->monspecs.dclkmax < info->monspecs.dclkmin) {
|
|
hfmin = 29000; hfmax = 30000;
|
|
vfmin = 60; vfmax = 60;
|
|
dclkmin = 0; dclkmax = 25000000;
|
|
} else {
|
|
hfmin = info->monspecs.hfmin;
|
|
hfmax = info->monspecs.hfmax;
|
|
vfmin = info->monspecs.vfmin;
|
|
vfmax = info->monspecs.vfmax;
|
|
dclkmin = info->monspecs.dclkmin;
|
|
dclkmax = info->monspecs.dclkmax;
|
|
}
|
|
|
|
memset(&timings, 0, sizeof(struct __fb_timings));
|
|
timings.hactive = var->xres;
|
|
timings.vactive = var->yres;
|
|
if (var->vmode & FB_VMODE_INTERLACED) {
|
|
timings.vactive /= 2;
|
|
interlace = 2;
|
|
}
|
|
if (var->vmode & FB_VMODE_DOUBLE) {
|
|
timings.vactive *= 2;
|
|
dscan = 2;
|
|
}
|
|
|
|
switch (flags & ~FB_IGNOREMON) {
|
|
case FB_MAXTIMINGS: /* maximize refresh rate */
|
|
timings.hfreq = hfmax;
|
|
fb_timings_hfreq(&timings);
|
|
if (timings.vfreq > vfmax) {
|
|
timings.vfreq = vfmax;
|
|
fb_timings_vfreq(&timings);
|
|
}
|
|
if (timings.dclk > dclkmax) {
|
|
timings.dclk = dclkmax;
|
|
fb_timings_dclk(&timings);
|
|
}
|
|
break;
|
|
case FB_VSYNCTIMINGS: /* vrefresh driven */
|
|
timings.vfreq = val;
|
|
fb_timings_vfreq(&timings);
|
|
break;
|
|
case FB_HSYNCTIMINGS: /* hsync driven */
|
|
timings.hfreq = val;
|
|
fb_timings_hfreq(&timings);
|
|
break;
|
|
case FB_DCLKTIMINGS: /* pixelclock driven */
|
|
timings.dclk = PICOS2KHZ(val) * 1000;
|
|
fb_timings_dclk(&timings);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (!(flags & FB_IGNOREMON) &&
|
|
(timings.vfreq < vfmin || timings.vfreq > vfmax ||
|
|
timings.hfreq < hfmin || timings.hfreq > hfmax ||
|
|
timings.dclk < dclkmin || timings.dclk > dclkmax))
|
|
return -EINVAL;
|
|
|
|
var->pixclock = KHZ2PICOS(timings.dclk/1000);
|
|
var->hsync_len = (timings.htotal * 8)/100;
|
|
var->right_margin = (timings.hblank/2) - var->hsync_len;
|
|
var->left_margin = timings.hblank - var->right_margin - var->hsync_len;
|
|
|
|
var->vsync_len = (3 * interlace)/dscan;
|
|
var->lower_margin = (1 * interlace)/dscan;
|
|
var->upper_margin = (timings.vblank * interlace)/dscan -
|
|
(var->vsync_len + var->lower_margin);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var)
|
|
{
|
|
return 1;
|
|
}
|
|
void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs)
|
|
{
|
|
specs = NULL;
|
|
}
|
|
void fb_destroy_modedb(struct fb_videomode *modedb)
|
|
{
|
|
}
|
|
int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
#endif /* CONFIG_FB_MODE_HELPERS */
|
|
|
|
/*
|
|
* fb_validate_mode - validates var against monitor capabilities
|
|
* @var: pointer to fb_var_screeninfo
|
|
* @info: pointer to fb_info
|
|
*
|
|
* DESCRIPTION:
|
|
* Validates video mode against monitor capabilities specified in
|
|
* info->monspecs.
|
|
*
|
|
* REQUIRES:
|
|
* A valid info->monspecs.
|
|
*/
|
|
int fb_validate_mode(const struct fb_var_screeninfo *var, struct fb_info *info)
|
|
{
|
|
u32 hfreq, vfreq, htotal, vtotal, pixclock;
|
|
u32 hfmin, hfmax, vfmin, vfmax, dclkmin, dclkmax;
|
|
|
|
/*
|
|
* If monspecs are invalid, use values that are enough
|
|
* for 640x480@60
|
|
*/
|
|
if (!info->monspecs.hfmax || !info->monspecs.vfmax ||
|
|
!info->monspecs.dclkmax ||
|
|
info->monspecs.hfmax < info->monspecs.hfmin ||
|
|
info->monspecs.vfmax < info->monspecs.vfmin ||
|
|
info->monspecs.dclkmax < info->monspecs.dclkmin) {
|
|
hfmin = 29000; hfmax = 30000;
|
|
vfmin = 60; vfmax = 60;
|
|
dclkmin = 0; dclkmax = 25000000;
|
|
} else {
|
|
hfmin = info->monspecs.hfmin;
|
|
hfmax = info->monspecs.hfmax;
|
|
vfmin = info->monspecs.vfmin;
|
|
vfmax = info->monspecs.vfmax;
|
|
dclkmin = info->monspecs.dclkmin;
|
|
dclkmax = info->monspecs.dclkmax;
|
|
}
|
|
|
|
if (!var->pixclock)
|
|
return -EINVAL;
|
|
pixclock = PICOS2KHZ(var->pixclock) * 1000;
|
|
|
|
htotal = var->xres + var->right_margin + var->hsync_len +
|
|
var->left_margin;
|
|
vtotal = var->yres + var->lower_margin + var->vsync_len +
|
|
var->upper_margin;
|
|
|
|
if (var->vmode & FB_VMODE_INTERLACED)
|
|
vtotal /= 2;
|
|
if (var->vmode & FB_VMODE_DOUBLE)
|
|
vtotal *= 2;
|
|
|
|
hfreq = pixclock/htotal;
|
|
hfreq = (hfreq + 500) / 1000 * 1000;
|
|
|
|
vfreq = hfreq/vtotal;
|
|
|
|
return (vfreq < vfmin || vfreq > vfmax ||
|
|
hfreq < hfmin || hfreq > hfmax ||
|
|
pixclock < dclkmin || pixclock > dclkmax) ?
|
|
-EINVAL : 0;
|
|
}
|
|
|
|
#if defined(__i386__)
|
|
#include <linux/pci.h>
|
|
|
|
/*
|
|
* We need to ensure that the EDID block is only returned for
|
|
* the primary graphics adapter.
|
|
*/
|
|
|
|
const unsigned char *fb_firmware_edid(struct device *device)
|
|
{
|
|
struct pci_dev *dev = NULL;
|
|
struct resource *res = NULL;
|
|
unsigned char *edid = NULL;
|
|
|
|
if (device)
|
|
dev = to_pci_dev(device);
|
|
|
|
if (dev)
|
|
res = &dev->resource[PCI_ROM_RESOURCE];
|
|
|
|
if (res && res->flags & IORESOURCE_ROM_SHADOW)
|
|
edid = edid_info.dummy;
|
|
|
|
return edid;
|
|
}
|
|
#else
|
|
const unsigned char *fb_firmware_edid(struct device *device)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif /* _i386_ */
|
|
|
|
EXPORT_SYMBOL(fb_parse_edid);
|
|
EXPORT_SYMBOL(fb_edid_to_monspecs);
|
|
EXPORT_SYMBOL(fb_firmware_edid);
|
|
EXPORT_SYMBOL(fb_get_mode);
|
|
EXPORT_SYMBOL(fb_validate_mode);
|
|
EXPORT_SYMBOL(fb_destroy_modedb);
|