1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _VBUTIL_
3 #define _VBUTIL_
xgifb_reg_set(unsigned long port,u8 index,u8 data)4 static inline void xgifb_reg_set(unsigned long port, u8 index, u8 data)
5 {
6 outb(index, port);
7 outb(data, port + 1);
8 }
9
xgifb_reg_get(unsigned long port,u8 index)10 static inline u8 xgifb_reg_get(unsigned long port, u8 index)
11 {
12 outb(index, port);
13 return inb(port + 1);
14 }
15
xgifb_reg_and_or(unsigned long port,u8 index,unsigned int data_and,unsigned int data_or)16 static inline void xgifb_reg_and_or(unsigned long port, u8 index,
17 unsigned int data_and, unsigned int data_or)
18 {
19 u8 temp;
20
21 temp = xgifb_reg_get(port, index);
22 temp = (u8)((temp & data_and) | data_or);
23 xgifb_reg_set(port, index, temp);
24 }
25
xgifb_reg_and(unsigned long port,u8 index,unsigned int data_and)26 static inline void xgifb_reg_and(unsigned long port, u8 index,
27 unsigned int data_and)
28 {
29 u8 temp;
30
31 temp = xgifb_reg_get(port, index);
32 temp = (u8)(temp & data_and);
33 xgifb_reg_set(port, index, temp);
34 }
35
xgifb_reg_or(unsigned long port,u8 index,unsigned int data_or)36 static inline void xgifb_reg_or(unsigned long port, u8 index,
37 unsigned int data_or)
38 {
39 u8 temp;
40
41 temp = xgifb_reg_get(port, index);
42 temp |= data_or;
43 xgifb_reg_set(port, index, temp);
44 }
45 #endif
46
47
