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review.evervolv.com / android_kernel_htc_m7 / 1e3d31172fce4905d8aff867d5b714a6ad3cf2ee / . / include / linux / gpio_event.h
blob: 8abef36d39031b626829c44eaa7de0dd4dbea315 [file] [log] [blame]
Nicholas Flintham1e3d3112013-04-10 10:48:38 +0100[diff] [blame^]1/* include/linux/gpio_event.h
2 *
3 * Copyright (C) 2007 Google, Inc.
4 *
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 */
15
16#ifndef _LINUX_GPIO_EVENT_H
17#define _LINUX_GPIO_EVENT_H
18
19#include <linux/input.h>
20
21#define KEY_LOGD(fmt, args...) printk(KERN_DEBUG "[KEY] "fmt, ##args)
22#define KEY_LOGI(fmt, args...) printk(KERN_INFO "[KEY] "fmt, ##args)
23#define KEY_LOGE(fmt, args...) printk(KERN_ERR "[KEY] "fmt, ##args)
24
25struct gpio_event_input_devs {
26 int count;
27 struct input_dev *dev[];
28};
29enum {
30 GPIO_EVENT_FUNC_UNINIT = 0x0,
31 GPIO_EVENT_FUNC_INIT = 0x1,
32 GPIO_EVENT_FUNC_SUSPEND = 0x2,
33 GPIO_EVENT_FUNC_RESUME = 0x3,
34};
35struct gpio_event_info {
36 int (*func)(struct gpio_event_input_devs *input_devs,
37 struct gpio_event_info *info,
38 void **data, int func);
39 int (*event)(struct gpio_event_input_devs *input_devs,
40 struct gpio_event_info *info,
41 void **data, unsigned int dev, unsigned int type,
42 unsigned int code, int value);
43 bool no_suspend;
44};
45
46struct gpio_event_platform_data {
47 const char *name;
48 struct gpio_event_info **info;
49 size_t info_count;
50 int (*power)(const struct gpio_event_platform_data *pdata, bool on);
51 const char *names[];
52
53};
54
55#define GPIO_EVENT_DEV_NAME "gpio-event"
56
57
58enum gpio_event_matrix_flags {
59
60 GPIOKPF_ACTIVE_HIGH = 1U << 0,
61 GPIOKPF_DEBOUNCE = 1U << 1,
62 GPIOKPF_REMOVE_SOME_PHANTOM_KEYS = 1U << 2,
63 GPIOKPF_REMOVE_PHANTOM_KEYS = GPIOKPF_REMOVE_SOME_PHANTOM_KEYS |
64 GPIOKPF_DEBOUNCE,
65 GPIOKPF_DRIVE_INACTIVE = 1U << 3,
66 GPIOKPF_LEVEL_TRIGGERED_IRQ = 1U << 4,
67 GPIOKPF_PRINT_UNMAPPED_KEYS = 1U << 16,
68 GPIOKPF_PRINT_MAPPED_KEYS = 1U << 17,
69 GPIOKPF_PRINT_PHANTOM_KEYS = 1U << 18,
70};
71
72#define MATRIX_CODE_BITS (10)
73#define MATRIX_KEY_MASK ((1U << MATRIX_CODE_BITS) - 1)
74#define MATRIX_KEY(dev, code) \
75 (((dev) << MATRIX_CODE_BITS) | (code & MATRIX_KEY_MASK))
76
77extern int gpio_event_matrix_func(struct gpio_event_input_devs *input_devs,
78 struct gpio_event_info *info, void **data, int func);
79struct gpio_event_matrix_info {
80
81 struct gpio_event_info info;
82
83 const unsigned short *keymap;
84 unsigned int *input_gpios;
85 unsigned int *output_gpios;
86 unsigned int ninputs;
87 unsigned int noutputs;
88
89 struct timespec settle_time;
90
91 struct timespec debounce_delay;
92 struct timespec poll_time;
93 unsigned flags;
94};
95
96
97enum gpio_event_direct_flags {
98 GPIOEDF_ACTIVE_HIGH = 1U << 0,
99 GPIOEDF_PRINT_KEYS = 1U << 8,
100 GPIOEDF_PRINT_KEY_DEBOUNCE = 1U << 9,
101 GPIOEDF_PRINT_KEY_UNSTABLE = 1U << 10,
102};
103
104struct gpio_event_direct_entry {
105 uint32_t gpio:16;
106 uint32_t code:10;
107 uint32_t dev:6;
108 bool not_wakeup_src;
109};
110
111extern int gpio_event_input_func(struct gpio_event_input_devs *input_devs,
112 struct gpio_event_info *info, void **data, int func);
113struct gpio_event_input_info {
114
115 struct gpio_event_info info;
116 ktime_t debounce_time;
117 ktime_t poll_time;
118 uint16_t flags;
119 uint16_t type;
120 const struct gpio_event_direct_entry *keymap;
121 size_t keymap_size;
122 void (*setup_input_gpio)(void);
123 void (*set_qty_irq)(uint8_t);
124 void (*clear_hw_reset)(void);
125};
126
127extern int gpio_event_output_func(struct gpio_event_input_devs *input_devs,
128 struct gpio_event_info *info, void **data, int func);
129extern int gpio_event_output_event(struct gpio_event_input_devs *input_devs,
130 struct gpio_event_info *info, void **data,
131 unsigned int dev, unsigned int type,
132 unsigned int code, int value);
133struct gpio_event_output_info {
134
135 struct gpio_event_info info;
136 uint16_t flags;
137 uint16_t type;
138 const struct gpio_event_direct_entry *keymap;
139 size_t keymap_size;
140};
141
142
143
144enum gpio_event_axis_flags {
145 GPIOEAF_PRINT_UNKNOWN_DIRECTION = 1U << 16,
146 GPIOEAF_PRINT_RAW = 1U << 17,
147 GPIOEAF_PRINT_EVENT = 1U << 18,
148};
149
150extern int gpio_event_axis_func(struct gpio_event_input_devs *input_devs,
151 struct gpio_event_info *info, void **data, int func);
152struct gpio_event_axis_info {
153
154 struct gpio_event_info info;
155 uint8_t count;
156 uint8_t dev;
157 uint8_t type;
158 uint16_t code;
159 uint16_t decoded_size;
160 uint16_t (*map)(struct gpio_event_axis_info *info, uint16_t in);
161 uint32_t *gpio;
162 uint32_t flags;
163};
164#define gpio_axis_2bit_gray_map gpio_axis_4bit_gray_map
165#define gpio_axis_3bit_gray_map gpio_axis_4bit_gray_map
166uint16_t gpio_axis_4bit_gray_map(
167 struct gpio_event_axis_info *info, uint16_t in);
168uint16_t gpio_axis_5bit_singletrack_map(
169 struct gpio_event_axis_info *info, uint16_t in);
170
171extern int gpio_event_switch_func(struct gpio_event_input_devs *input_devs,
172 struct gpio_event_info *info, void **data, int func);
173struct gpio_event_switch_info {
174
175 struct gpio_event_info info;
176 ktime_t debounce_time;
177 ktime_t poll_time;
178 uint16_t flags;
179 uint16_t type;
180 const struct gpio_event_direct_entry *keymap;
181 size_t keymap_size;
182 void (*setup_switch_gpio)(void);
183 void (*set_qty_irq)(uint8_t);
184};
185#endif