1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/*
* 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/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/fb.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#include "nv_type.h"
#include "nv_local.h"
#include "nv_proto.h"
void nvidia_create_i2c_busses(struct nvidia_par *par) {}
int nvidia_probe_i2c_connector(struct nvidia_par *par, int conn, u8 **out_edid)
{
struct device_node *dp;
unsigned char *pedid = NULL;
unsigned char *disptype = NULL;
static char *propnames[] = {
"DFP,EDID", "LCD,EDID", "EDID", "EDID1", "EDID,B", "EDID,A", NULL };
int i;
dp = pci_device_to_OF_node(par->pci_dev);
for (; dp != NULL; dp = dp->child) {
disptype = (unsigned char *)get_property(dp, "display-type", NULL);
if (disptype == NULL)
continue;
if (strncmp(disptype, "LCD", 3) != 0)
continue;
for (i = 0; propnames[i] != NULL; ++i) {
pedid = (unsigned char *)
get_property(dp, propnames[i], NULL);
if (pedid != NULL) {
*out_edid = pedid;
return 0;
}
}
}
return 1;
}
|
