[PATCH] gpio: cosmetics: remove needless newlines
[linux-2.6] / drivers / video / nvidia / nv_of.c
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/module.h>
14 #include <linux/kernel.h>
15 #include <linux/sched.h>
16 #include <linux/delay.h>
17 #include <linux/pci.h>
18 #include <linux/fb.h>
19
20 #include <asm/io.h>
21
22 #include <asm/prom.h>
23 #include <asm/pci-bridge.h>
24
25 #include "nv_type.h"
26 #include "nv_local.h"
27 #include "nv_proto.h"
28
29 #include "../edid.h"
30
31 int nvidia_probe_of_connector(struct fb_info *info, int conn, u8 **out_edid)
32 {
33         struct nvidia_par *par = info->par;
34         struct device_node *parent, *dp;
35         unsigned char *pedid = NULL;
36         static char *propnames[] = {
37                 "DFP,EDID", "LCD,EDID", "EDID", "EDID1",
38                 "EDID,B", "EDID,A", NULL };
39         int i;
40
41         parent = pci_device_to_OF_node(par->pci_dev);
42         if (parent == NULL)
43                 return -1;
44         if (par->twoHeads) {
45                 char *pname;
46                 int len;
47
48                 for (dp = NULL;
49                      (dp = of_get_next_child(parent, dp)) != NULL;) {
50                         pname = (char *)get_property(dp, "name", NULL);
51                         if (!pname)
52                                 continue;
53                         len = strlen(pname);
54                         if ((pname[len-1] == 'A' && conn == 1) ||
55                             (pname[len-1] == 'B' && conn == 2)) {
56                                 for (i = 0; propnames[i] != NULL; ++i) {
57                                         pedid = (unsigned char *)
58                                                 get_property(dp, propnames[i],
59                                                              NULL);
60                                         if (pedid != NULL)
61                                                 break;
62                                 }
63                                 of_node_put(dp);
64                                 break;
65                         }
66                 }
67         }
68         if (pedid == NULL) {
69                 for (i = 0; propnames[i] != NULL; ++i) {
70                         pedid = (unsigned char *)
71                                 get_property(parent, propnames[i], NULL);
72                         if (pedid != NULL)
73                                 break;
74                 }
75         }
76         if (pedid) {
77                 *out_edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
78                 if (*out_edid == NULL)
79                         return -1;
80                 memcpy(*out_edid, pedid, EDID_LENGTH);
81                 printk(KERN_DEBUG "nvidiafb: Found OF EDID for head %d\n", conn);
82                 return 0;
83         }
84         return -1;
85 }