mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 07:35:12 +07:00
5299b62097
The OF functionality has moved to a common place and be used by many archs. So we don't need to include the ppc arch specific header files and depend on PPC_OF option any more. This is a preparation for killing PPC_OF. Signed-off-by: Kevin Hao <haokexin@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
/*
|
|
* 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/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/gfp.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/fb.h>
|
|
|
|
#include <asm/io.h>
|
|
|
|
#include "nv_type.h"
|
|
#include "nv_local.h"
|
|
#include "nv_proto.h"
|
|
|
|
#include "../edid.h"
|
|
|
|
int nvidia_probe_of_connector(struct fb_info *info, int conn, u8 **out_edid)
|
|
{
|
|
struct nvidia_par *par = info->par;
|
|
struct device_node *parent, *dp;
|
|
const unsigned char *pedid = NULL;
|
|
static char *propnames[] = {
|
|
"DFP,EDID", "LCD,EDID", "EDID", "EDID1",
|
|
"EDID,B", "EDID,A", NULL };
|
|
int i;
|
|
|
|
parent = pci_device_to_OF_node(par->pci_dev);
|
|
if (parent == NULL)
|
|
return -1;
|
|
if (par->twoHeads) {
|
|
const char *pname;
|
|
int len;
|
|
|
|
for (dp = NULL;
|
|
(dp = of_get_next_child(parent, dp)) != NULL;) {
|
|
pname = of_get_property(dp, "name", NULL);
|
|
if (!pname)
|
|
continue;
|
|
len = strlen(pname);
|
|
if ((pname[len-1] == 'A' && conn == 1) ||
|
|
(pname[len-1] == 'B' && conn == 2)) {
|
|
for (i = 0; propnames[i] != NULL; ++i) {
|
|
pedid = of_get_property(dp,
|
|
propnames[i], NULL);
|
|
if (pedid != NULL)
|
|
break;
|
|
}
|
|
of_node_put(dp);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (pedid == NULL) {
|
|
for (i = 0; propnames[i] != NULL; ++i) {
|
|
pedid = of_get_property(parent, propnames[i], NULL);
|
|
if (pedid != NULL)
|
|
break;
|
|
}
|
|
}
|
|
if (pedid) {
|
|
*out_edid = kmemdup(pedid, EDID_LENGTH, GFP_KERNEL);
|
|
if (*out_edid == NULL)
|
|
return -1;
|
|
printk(KERN_DEBUG "nvidiafb: Found OF EDID for head %d\n", conn);
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|