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60 lines
1.4 KiB
60 lines
1.4 KiB
20 years ago
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/*
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* linux/drivers/video/nvidia/nv_of.c
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*
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* Copyright 2004 Antonino A. Daplas <adaplas @pol.net>
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*
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* Based on rivafb-i2c.c
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/pci.h>
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#include <linux/fb.h>
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#include <asm/io.h>
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#include <asm/prom.h>
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#include <asm/pci-bridge.h>
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#include "nv_type.h"
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#include "nv_local.h"
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#include "nv_proto.h"
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void nvidia_create_i2c_busses(struct nvidia_par *par) {}
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void nvidia_delete_i2c_busses(struct nvidia_par *par) {}
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int nvidia_probe_i2c_connector(struct nvidia_par *par, int conn, u8 **out_edid)
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{
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struct device_node *dp;
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unsigned char *pedid = NULL;
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unsigned char *disptype = NULL;
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static char *propnames[] = {
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"DFP,EDID", "LCD,EDID", "EDID", "EDID1", "EDID,B", "EDID,A", NULL };
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int i;
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dp = pci_device_to_OF_node(par->pci_dev);
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for (; dp != NULL; dp = dp->child) {
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disptype = (unsigned char *)get_property(dp, "display-type", NULL);
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if (disptype == NULL)
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continue;
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if (strncmp(disptype, "LCD", 3) != 0)
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continue;
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for (i = 0; propnames[i] != NULL; ++i) {
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pedid = (unsigned char *)
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get_property(dp, propnames[i], NULL);
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if (pedid != NULL) {
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*out_edid = pedid;
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return 0;
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}
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}
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}
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return 1;
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}
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