47 lines
960 B
C
47 lines
960 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _VBUTIL_
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#define _VBUTIL_
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static inline void xgifb_reg_set(unsigned long port, u8 index, u8 data)
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{
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outb(index, port);
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outb(data, port + 1);
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}
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static inline u8 xgifb_reg_get(unsigned long port, u8 index)
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{
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outb(index, port);
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return inb(port + 1);
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}
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static inline void xgifb_reg_and_or(unsigned long port, u8 index,
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unsigned int data_and, unsigned int data_or)
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{
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u8 temp;
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temp = xgifb_reg_get(port, index);
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temp = (u8)((temp & data_and) | data_or);
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xgifb_reg_set(port, index, temp);
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}
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static inline void xgifb_reg_and(unsigned long port, u8 index,
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unsigned int data_and)
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{
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u8 temp;
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temp = xgifb_reg_get(port, index);
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temp = (u8)(temp & data_and);
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xgifb_reg_set(port, index, temp);
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}
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static inline void xgifb_reg_or(unsigned long port, u8 index,
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unsigned int data_or)
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{
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u8 temp;
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temp = xgifb_reg_get(port, index);
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temp |= data_or;
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xgifb_reg_set(port, index, temp);
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}
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#endif
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