b3c1be1b78
Many motherboards utilize a LPC to ISA bridge in order to decode ISA-style port-mapped I/O addresses. This is particularly true for embedded motherboards supporting the PC/104 bus (a bus specification derived from ISA). These motherboards are now commonly running 64-bit x86 processors. The X86_32 dependency should be removed from the ISA bus configuration option in order to support these newer motherboards. A new config option, CONFIG_ISA_BUS, is introduced to allow for the compilation of the ISA bus driver independent of the CONFIG_ISA option. Devices which communicate via ISA-compatible buses can now be supported independent of the dependencies of the CONFIG_ISA option. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
40 lines
898 B
C
40 lines
898 B
C
/*
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* ISA bus.
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*/
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#ifndef __LINUX_ISA_H
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#define __LINUX_ISA_H
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#include <linux/device.h>
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#include <linux/kernel.h>
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struct isa_driver {
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int (*match)(struct device *, unsigned int);
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int (*probe)(struct device *, unsigned int);
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int (*remove)(struct device *, unsigned int);
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void (*shutdown)(struct device *, unsigned int);
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int (*suspend)(struct device *, unsigned int, pm_message_t);
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int (*resume)(struct device *, unsigned int);
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struct device_driver driver;
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struct device *devices;
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};
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#define to_isa_driver(x) container_of((x), struct isa_driver, driver)
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#ifdef CONFIG_ISA_BUS
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int isa_register_driver(struct isa_driver *, unsigned int);
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void isa_unregister_driver(struct isa_driver *);
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#else
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static inline int isa_register_driver(struct isa_driver *d, unsigned int i)
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{
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return 0;
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}
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static inline void isa_unregister_driver(struct isa_driver *d)
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{
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}
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#endif
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#endif /* __LINUX_ISA_H */
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