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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/video/nvidia/nv_of.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/video/nvidia/nv_of.c')
-rw-r--r--drivers/video/nvidia/nv_of.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/video/nvidia/nv_of.c b/drivers/video/nvidia/nv_of.c
new file mode 100644
index 000000000000..7d12eb85310d
--- /dev/null
+++ b/drivers/video/nvidia/nv_of.c
@@ -0,0 +1,59 @@
1/*
2 * linux/drivers/video/nvidia/nv_of.c
3 *
4 * Copyright 2004 Antonino A. Daplas <adaplas @pol.net>
5 *
6 * Based on rivafb-i2c.c
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file COPYING in the main directory of this archive
10 * for more details.
11 */
12
13#include <linux/config.h>
14#include <linux/module.h>
15#include <linux/kernel.h>
16#include <linux/sched.h>
17#include <linux/delay.h>
18#include <linux/pci.h>
19#include <linux/fb.h>
20
21#include <asm/io.h>
22
23#include <asm/prom.h>
24#include <asm/pci-bridge.h>
25
26#include "nv_type.h"
27#include "nv_local.h"
28#include "nv_proto.h"
29
30void nvidia_create_i2c_busses(struct nvidia_par *par) {}
31void nvidia_delete_i2c_busses(struct nvidia_par *par) {}
32
33int nvidia_probe_i2c_connector(struct nvidia_par *par, int conn, u8 **out_edid)
34{
35 struct device_node *dp;
36 unsigned char *pedid = NULL;
37 unsigned char *disptype = NULL;
38 static char *propnames[] = {
39 "DFP,EDID", "LCD,EDID", "EDID", "EDID1", "EDID,B", "EDID,A", NULL };
40 int i;
41
42 dp = pci_device_to_OF_node(par->pci_dev);
43 for (; dp != NULL; dp = dp->child) {
44 disptype = (unsigned char *)get_property(dp, "display-type", NULL);
45 if (disptype == NULL)
46 continue;
47 if (strncmp(disptype, "LCD", 3) != 0)
48 continue;
49 for (i = 0; propnames[i] != NULL; ++i) {
50 pedid = (unsigned char *)
51 get_property(dp, propnames[i], NULL);
52 if (pedid != NULL) {
53 *out_edid = pedid;
54 return 0;
55 }
56 }
57 }
58 return 1;
59}