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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
/* File taken from the Linux xgifb driver (v3.18.5) */
#include "xgi_coreboot.h"
#include "vgatypes.h"
#include "vb_util.h"
void xgifb_reg_set(unsigned long port, u8 index, u8 data)
{
outb(index, port);
outb(data, port + 1);
}
u8 xgifb_reg_get(unsigned long port, u8 index)
{
u8 data;
outb(index, port);
data = inb(port + 1);
return data;
}
void xgifb_reg_and_or(unsigned long port, u8 index,
unsigned int data_and, unsigned int data_or)
{
u8 temp;
temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
temp = (temp & data_and) | data_or;
xgifb_reg_set(port, index, temp);
}
void xgifb_reg_and(unsigned long port, u8 index, unsigned int data_and)
{
u8 temp;
temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
temp &= data_and;
xgifb_reg_set(port, index, temp);
}
void xgifb_reg_or(unsigned long port, u8 index, unsigned int data_or)
{
u8 temp;
temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
temp |= data_or;
xgifb_reg_set(port, index, temp);
}
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