/*
* linux/drivers/video/nvidia/nv_of.c
*
* Copyright 2004 Antonino A. Daplas <adaplas @pol.net>
*
* Based on rivafb-i2c.c
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/gfp.h>
#include <linux/pci.h>
#include <linux/fb.h>
#include <asm /io.h>
#include "nv_type.h"
#include "nv_local.h"
#include "nv_proto.h"
#include "../edid.h"
int nvidia_probe_of_connector(struct fb_info *info, int conn, u8 **out_edid)
{
struct nvidia_par *par = info->par;
struct device_node *parent, *dp;
const unsigned char *pedid = NULL;
static char *propnames[] = {
"DFP,EDID" , "LCD,EDID" , "EDID" , "EDID1" ,
"EDID,B" , "EDID,A" , NULL };
int i;
parent = pci_device_to_OF_node(par->pci_dev);
if (parent == NULL)
return -1 ;
if (par->twoHeads) {
const char *pname;
int len;
for_each_child_of_node(parent, dp) {
pname = of_get_property(dp, "name" , NULL);
if (!pname)
continue ;
len = strlen(pname);
if ((pname[len-1 ] == 'A' && conn == 1 ) ||
(pname[len-1 ] == 'B' && conn == 2 )) {
for (i = 0 ; propnames[i] != NULL; ++i) {
pedid = of_get_property(dp,
propnames[i], NULL);
if (pedid != NULL)
break ;
}
of_node_put(dp);
break ;
}
}
}
if (pedid == NULL) {
for (i = 0 ; propnames[i] != NULL; ++i) {
pedid = of_get_property(parent, propnames[i], NULL);
if (pedid != NULL)
break ;
}
}
if (pedid) {
*out_edid = kmemdup(pedid, EDID_LENGTH, GFP_KERNEL);
if (*out_edid == NULL)
return -1 ;
printk(KERN_DEBUG "nvidiafb: Found OF EDID for head %d\n" , conn);
return 0 ;
}
return -1 ;
}
Messung V0.5 in Prozent C=95 H=93 G=93
¤ Dauer der Verarbeitung: 0.14 Sekunden
(vorverarbeitet am 2026-06-07)
¤
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