Linux 2.6.34-rc3
[pohmelfs.git] / drivers / input / serio / i8042-io.h
blob847f4aad7ed560f2c5d9b91f8ba34079b6c99d7c
1 #ifndef _I8042_IO_H
2 #define _I8042_IO_H
4 /*
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 */
11 * Names.
14 #define I8042_KBD_PHYS_DESC "isa0060/serio0"
15 #define I8042_AUX_PHYS_DESC "isa0060/serio1"
16 #define I8042_MUX_PHYS_DESC "isa0060/serio%d"
19 * IRQs.
22 #ifdef __alpha__
23 # define I8042_KBD_IRQ 1
24 # define I8042_AUX_IRQ (RTC_PORT(0) == 0x170 ? 9 : 12) /* Jensen is special */
25 #elif defined(__arm__)
26 /* defined in include/asm-arm/arch-xxx/irqs.h */
27 #include <asm/irq.h>
28 #elif defined(CONFIG_SH_CAYMAN)
29 #include <asm/irq.h>
30 #else
31 # define I8042_KBD_IRQ 1
32 # define I8042_AUX_IRQ 12
33 #endif
37 * Register numbers.
40 #define I8042_COMMAND_REG 0x64
41 #define I8042_STATUS_REG 0x64
42 #define I8042_DATA_REG 0x60
44 static inline int i8042_read_data(void)
46 return inb(I8042_DATA_REG);
49 static inline int i8042_read_status(void)
51 return inb(I8042_STATUS_REG);
54 static inline void i8042_write_data(int val)
56 outb(val, I8042_DATA_REG);
59 static inline void i8042_write_command(int val)
61 outb(val, I8042_COMMAND_REG);
64 static inline int i8042_platform_init(void)
67 * On some platforms touching the i8042 data register region can do really
68 * bad things. Because of this the region is always reserved on such boxes.
70 #if defined(CONFIG_PPC)
71 if (check_legacy_ioport(I8042_DATA_REG))
72 return -ENODEV;
73 #endif
74 #if !defined(__sh__) && !defined(__alpha__) && !defined(__mips__)
75 if (!request_region(I8042_DATA_REG, 16, "i8042"))
76 return -EBUSY;
77 #endif
79 i8042_reset = 1;
80 return 0;
83 static inline void i8042_platform_exit(void)
85 #if !defined(__sh__) && !defined(__alpha__)
86 release_region(I8042_DATA_REG, 16);
87 #endif
90 #endif /* _I8042_IO_H */