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https://github.com/torvalds/linux
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54 lines
858 B
C
54 lines
858 B
C
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#ifndef W83977AF_H
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#define W83977AF_H
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#define W977_EFIO_BASE 0x370
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#define W977_EFIO2_BASE 0x3f0
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#define W977_DEVICE_IR 0x06
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/*
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* Enter extended function mode
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*/
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static inline void w977_efm_enter(unsigned int efio)
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{
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outb(0x87, efio);
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outb(0x87, efio);
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}
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/*
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* Select a device to configure
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*/
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static inline void w977_select_device(__u8 devnum, unsigned int efio)
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{
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outb(0x07, efio);
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outb(devnum, efio+1);
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}
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/*
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* Write a byte to a register
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*/
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static inline void w977_write_reg(__u8 reg, __u8 value, unsigned int efio)
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{
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outb(reg, efio);
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outb(value, efio+1);
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}
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/*
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* read a byte from a register
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*/
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static inline __u8 w977_read_reg(__u8 reg, unsigned int efio)
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{
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outb(reg, efio);
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return inb(efio+1);
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}
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/*
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* Exit extended function mode
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*/
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static inline void w977_efm_exit(unsigned int efio)
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{
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outb(0xAA, efio);
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}
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#endif
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