linux - drivers/hid/hid-haptic.h

129 lines · 3.5 KiB

1	/* SPDX-License-Identifier: GPL-2.0-or-later */
2	/*
3	* HID Haptic support for Linux
4	*
5	* Copyright (c) 2021 Angela Czubak <[email protected]>
6	*/
7
8	#include <linux/hid.h>
9
10	#define HID_HAPTIC_ORDINAL_WAVEFORMNONE 1
11	#define HID_HAPTIC_ORDINAL_WAVEFORMSTOP 2
12
13	#define HID_HAPTIC_MODE_DEVICE 0
14	#define HID_HAPTIC_MODE_HOST 1
15
16	struct hid_haptic_effect {
17	u8 *report_buf;
18	struct input_dev *input_dev;
19	struct work_struct work;
20	struct list_head control;
21	struct mutex control_mutex;
22	};
23
24	struct hid_haptic_effect_node {
25	struct list_head node;
26	struct file *file;
27	};
28
29	struct hid_haptic_device {
30	struct input_dev *input_dev;
31	struct hid_device *hdev;
32	struct hid_report *auto_trigger_report;
33	struct mutex auto_trigger_mutex;
34	struct workqueue_struct *wq;
35	struct hid_report *manual_trigger_report;
36	struct mutex manual_trigger_mutex;
37	size_t manual_trigger_report_len;
38	int pressed_state;
39	s32 pressure_sum;
40	s32 force_logical_minimum;
41	s32 force_physical_minimum;
42	s32 force_resolution;
43	u32 mode;
44	u32 default_auto_trigger;
45	u32 vendor_page;
46	u32 vendor_id;
47	u32 max_waveform_id;
48	u32 max_duration_id;
49	u16 *hid_usage_map;
50	u32 *duration_map;
51	u16 press_ordinal;
52	u16 release_ordinal;
53	struct hid_haptic_effect *effect;
54	struct hid_haptic_effect stop_effect;
55	};
56
57	#if IS_ENABLED(CONFIG_HID_HAPTIC)
58	void hid_haptic_feature_mapping(struct hid_device *hdev,
59	struct hid_haptic_device *haptic,
60	struct hid_field *field, struct hid_usage
61	*usage);
62	bool hid_haptic_check_pressure_unit(struct hid_haptic_device *haptic,
63	struct hid_input hi, struct hid_field field);
64	int hid_haptic_input_mapping(struct hid_device *hdev,
65	struct hid_haptic_device *haptic,
66	struct hid_input *hi,
67	struct hid_field field, struct hid_usage usage,
68	unsigned long *bit, int max);
69	int hid_haptic_input_configured(struct hid_device *hdev,
70	struct hid_haptic_device *haptic,
71	struct hid_input *hi);
72	int hid_haptic_init(struct hid_device hdev, struct hid_haptic_device haptic,
73	struct input_dev *dev);
74	void hid_haptic_handle_press_release(struct hid_haptic_device *haptic);
75	void hid_haptic_pressure_reset(struct hid_haptic_device *haptic);
76	void hid_haptic_pressure_increase(struct hid_haptic_device *haptic,
77	__s32 pressure);
78	#else
79	static inline
80	void hid_haptic_feature_mapping(struct hid_device *hdev,
81	struct hid_haptic_device *haptic,
82	struct hid_field *field, struct hid_usage
83	*usage)
84	{}
85	static inline
86	bool hid_haptic_check_pressure_unit(struct hid_haptic_device *haptic,
87	struct hid_input hi, struct hid_field field)
88	{
89	return false;
90	}
91	static inline
92	int hid_haptic_input_mapping(struct hid_device *hdev,
93	struct hid_haptic_device *haptic,
94	struct hid_input *hi,
95	struct hid_field field, struct hid_usage usage,
96	unsigned long *bit, int max)
97	{
98	return 0;
99	}
100	static inline
101	int hid_haptic_input_configured(struct hid_device *hdev,
102	struct hid_haptic_device *haptic,
103	struct hid_input *hi)
104	{
105	return 0;
106	}
107	static inline
108	void hid_haptic_reset(struct hid_device hdev, struct hid_haptic_device haptic)
109	{}
110	static inline
111	int hid_haptic_init(struct hid_device hdev, struct hid_haptic_device haptic,
112	struct input_dev *dev)
113	{
114	return 0;
115	}
116	static inline
117	void hid_haptic_handle_press_release(struct hid_haptic_device *haptic) {}
118	static inline
119	bool hid_haptic_handle_input(struct hid_haptic_device *haptic)
120	{
121	return false;
122	}
123	static inline
124	void hid_haptic_pressure_reset(struct hid_haptic_device *haptic) {}
125	static inline
126	void hid_haptic_pressure_increase(struct hid_haptic_device *haptic,
127	__s32 pressure)
128	{}
129	#endif