tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Code specific to PKUnity SoC and UniCore ISA
4 *
5 * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
6 * Copyright (C) 2001-2011 Guan Xuetao
7 */
8#ifndef _I8042_UNICORE32_H
9#define _I8042_UNICORE32_H
10
11#include <mach/hardware.h>
12
13/*
14 * Names.
15 */
16#define I8042_KBD_PHYS_DESC "isa0060/serio0"
17#define I8042_AUX_PHYS_DESC "isa0060/serio1"
18#define I8042_MUX_PHYS_DESC "isa0060/serio%d"
19
20/*
21 * IRQs.
22 */
23#define I8042_KBD_IRQ IRQ_PS2_KBD
24#define I8042_AUX_IRQ IRQ_PS2_AUX
25
26/*
27 * Register numbers.
28 */
29#define I8042_COMMAND_REG PS2_COMMAND
30#define I8042_STATUS_REG PS2_STATUS
31#define I8042_DATA_REG PS2_DATA
32
33#define I8042_REGION_START (resource_size_t)(PS2_DATA)
34#define I8042_REGION_SIZE (resource_size_t)(16)
35
36static inline int i8042_read_data(void)
37{
38 return readb(I8042_DATA_REG);
39}
40
41static inline int i8042_read_status(void)
42{
43 return readb(I8042_STATUS_REG);
44}
45
46static inline void i8042_write_data(int val)
47{
48 writeb(val, I8042_DATA_REG);
49}
50
51static inline void i8042_write_command(int val)
52{
53 writeb(val, I8042_COMMAND_REG);
54}
55
56static inline int i8042_platform_init(void)
57{
58 if (!request_mem_region(I8042_REGION_START, I8042_REGION_SIZE, "i8042"))
59 return -EBUSY;
60
61 i8042_reset = I8042_RESET_ALWAYS;
62 return 0;
63}
64
65static inline void i8042_platform_exit(void)
66{
67 release_mem_region(I8042_REGION_START, I8042_REGION_SIZE);
68}
69
70#endif /* _I8042_UNICORE32_H */