1 /*
2  * Code specific to PKUnity SoC and UniCore ISA
3  *
4  *	Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
5  *	Copyright (C) 2001-2011 Guan Xuetao
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 #ifndef _I8042_UNICORE32_H
12 #define _I8042_UNICORE32_H
13 
14 #include <mach/hardware.h>
15 
16 /*
17  * Names.
18  */
19 #define I8042_KBD_PHYS_DESC "isa0060/serio0"
20 #define I8042_AUX_PHYS_DESC "isa0060/serio1"
21 #define I8042_MUX_PHYS_DESC "isa0060/serio%d"
22 
23 /*
24  * IRQs.
25  */
26 #define I8042_KBD_IRQ           IRQ_PS2_KBD
27 #define I8042_AUX_IRQ           IRQ_PS2_AUX
28 
29 /*
30  * Register numbers.
31  */
32 #define I8042_COMMAND_REG	PS2_COMMAND
33 #define I8042_STATUS_REG	PS2_STATUS
34 #define I8042_DATA_REG		PS2_DATA
35 
36 #define I8042_REGION_START	(resource_size_t)(PS2_DATA)
37 #define I8042_REGION_SIZE	(resource_size_t)(16)
38 
i8042_read_data(void)39 static inline int i8042_read_data(void)
40 {
41 	return readb(I8042_DATA_REG);
42 }
43 
i8042_read_status(void)44 static inline int i8042_read_status(void)
45 {
46 	return readb(I8042_STATUS_REG);
47 }
48 
i8042_write_data(int val)49 static inline void i8042_write_data(int val)
50 {
51 	writeb(val, I8042_DATA_REG);
52 }
53 
i8042_write_command(int val)54 static inline void i8042_write_command(int val)
55 {
56 	writeb(val, I8042_COMMAND_REG);
57 }
58 
i8042_platform_init(void)59 static inline int i8042_platform_init(void)
60 {
61 	if (!request_mem_region(I8042_REGION_START, I8042_REGION_SIZE, "i8042"))
62 		return -EBUSY;
63 
64 	i8042_reset = I8042_RESET_ALWAYS;
65 	return 0;
66 }
67 
i8042_platform_exit(void)68 static inline void i8042_platform_exit(void)
69 {
70 	release_mem_region(I8042_REGION_START, I8042_REGION_SIZE);
71 }
72 
73 #endif /* _I8042_UNICORE32_H */
74