| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 30 | void nvidia_create_i2c_busses(struct nvidia_par *par) {} |
| 31 | void nvidia_delete_i2c_busses(struct nvidia_par *par) {} |
| 32 | |
| 33 | int 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 | } |