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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _PSMOUSE_H
3#define _PSMOUSE_H
4
5#define PSMOUSE_OOB_NONE 0x00
6#define PSMOUSE_OOB_EXTRA_BTNS 0x01
7
8#define PSMOUSE_CMD_SETSCALE11 0x00e6
9#define PSMOUSE_CMD_SETSCALE21 0x00e7
10#define PSMOUSE_CMD_SETRES 0x10e8
11#define PSMOUSE_CMD_GETINFO 0x03e9
12#define PSMOUSE_CMD_SETSTREAM 0x00ea
13#define PSMOUSE_CMD_SETPOLL 0x00f0
14#define PSMOUSE_CMD_POLL 0x00eb /* caller sets number of bytes to receive */
15#define PSMOUSE_CMD_RESET_WRAP 0x00ec
16#define PSMOUSE_CMD_GETID 0x02f2
17#define PSMOUSE_CMD_SETRATE 0x10f3
18#define PSMOUSE_CMD_ENABLE 0x00f4
19#define PSMOUSE_CMD_DISABLE 0x00f5
20#define PSMOUSE_CMD_RESET_DIS 0x00f6
21#define PSMOUSE_CMD_RESET_BAT 0x02ff
22
23#define PSMOUSE_RET_BAT 0xaa
24#define PSMOUSE_RET_ID 0x00
25#define PSMOUSE_RET_ACK 0xfa
26#define PSMOUSE_RET_NAK 0xfe
27
28enum psmouse_state {
29 PSMOUSE_IGNORE,
30 PSMOUSE_INITIALIZING,
31 PSMOUSE_RESYNCING,
32 PSMOUSE_CMD_MODE,
33 PSMOUSE_ACTIVATED,
34};
35
36/* psmouse protocol handler return codes */
37typedef enum {
38 PSMOUSE_BAD_DATA,
39 PSMOUSE_GOOD_DATA,
40 PSMOUSE_FULL_PACKET
41} psmouse_ret_t;
42
43enum psmouse_scale {
44 PSMOUSE_SCALE11,
45 PSMOUSE_SCALE21
46};
47
48enum psmouse_type {
49 PSMOUSE_NONE,
50 PSMOUSE_PS2,
51 PSMOUSE_PS2PP,
52 PSMOUSE_THINKPS,
53 PSMOUSE_GENPS,
54 PSMOUSE_IMPS,
55 PSMOUSE_IMEX,
56 PSMOUSE_SYNAPTICS,
57 PSMOUSE_ALPS,
58 PSMOUSE_LIFEBOOK,
59 PSMOUSE_TRACKPOINT,
60 PSMOUSE_TOUCHKIT_PS2,
61 PSMOUSE_CORTRON,
62 PSMOUSE_HGPK, /* No longer used */
63 PSMOUSE_ELANTECH,
64 PSMOUSE_FSP,
65 PSMOUSE_SYNAPTICS_RELATIVE,
66 PSMOUSE_CYPRESS,
67 PSMOUSE_FOCALTECH,
68 PSMOUSE_VMMOUSE,
69 PSMOUSE_BYD,
70 PSMOUSE_SYNAPTICS_SMBUS,
71 PSMOUSE_ELANTECH_SMBUS,
72 PSMOUSE_AUTO /* This one should always be last */
73};
74
75struct psmouse;
76
77struct psmouse_protocol {
78 enum psmouse_type type;
79 bool maxproto;
80 bool ignore_parity; /* Protocol should ignore parity errors from KBC */
81 bool try_passthru; /* Try protocol also on passthrough ports */
82 bool smbus_companion; /* "Protocol" is a stub, device is on SMBus */
83 const char *name;
84 const char *alias;
85 int (*detect)(struct psmouse *, bool);
86 int (*init)(struct psmouse *);
87};
88
89struct psmouse {
90 void *private;
91 struct input_dev *dev;
92 struct ps2dev ps2dev;
93 struct work_struct resync_work;
94 const char *vendor;
95 const char *name;
96 const struct psmouse_protocol *protocol;
97 unsigned char packet[8];
98 unsigned char badbyte;
99 unsigned char pktcnt;
100 unsigned char pktsize;
101 unsigned char oob_data_type;
102 unsigned char extra_buttons;
103 bool acks_disable_command;
104 unsigned int model;
105 unsigned long last;
106 unsigned long out_of_sync_cnt;
107 unsigned long num_resyncs;
108 enum psmouse_state state;
109 char devname[64];
110 char phys[32];
111
112 unsigned int rate;
113 unsigned int resolution;
114 unsigned int resetafter;
115 unsigned int resync_time;
116 bool smartscroll; /* Logitech only */
117
118 psmouse_ret_t (*protocol_handler)(struct psmouse *psmouse);
119 void (*set_rate)(struct psmouse *psmouse, unsigned int rate);
120 void (*set_resolution)(struct psmouse *psmouse, unsigned int resolution);
121 void (*set_scale)(struct psmouse *psmouse, enum psmouse_scale scale);
122
123 int (*reconnect)(struct psmouse *psmouse);
124 int (*fast_reconnect)(struct psmouse *psmouse);
125 void (*disconnect)(struct psmouse *psmouse);
126 void (*cleanup)(struct psmouse *psmouse);
127 int (*poll)(struct psmouse *psmouse);
128
129 void (*pt_activate)(struct psmouse *psmouse);
130 void (*pt_deactivate)(struct psmouse *psmouse);
131};
132
133struct psmouse *psmouse_from_serio(struct serio *serio);
134
135int psmouse_reset(struct psmouse *psmouse);
136void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state);
137void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution);
138psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse);
139int psmouse_activate(struct psmouse *psmouse);
140int psmouse_deactivate(struct psmouse *psmouse);
141bool psmouse_matches_pnp_id(struct psmouse *psmouse, const char * const ids[]);
142
143void psmouse_report_standard_buttons(struct input_dev *, u8 buttons);
144void psmouse_report_standard_motion(struct input_dev *, u8 *packet);
145void psmouse_report_standard_packet(struct input_dev *, u8 *packet);
146
147struct psmouse_attribute {
148 struct device_attribute dattr;
149 void *data;
150 ssize_t (*show)(struct psmouse *psmouse, void *data, char *buf);
151 ssize_t (*set)(struct psmouse *psmouse, void *data,
152 const char *buf, size_t count);
153 bool protect;
154};
155#define to_psmouse_attr(a) container_of((a), struct psmouse_attribute, dattr)
156
157ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *attr,
158 char *buf);
159ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *attr,
160 const char *buf, size_t count);
161
162#define __PSMOUSE_DEFINE_ATTR_VAR(_name, _mode, _data, _show, _set, _protect) \
163static struct psmouse_attribute psmouse_attr_##_name = { \
164 .dattr = { \
165 .attr = { \
166 .name = __stringify(_name), \
167 .mode = _mode, \
168 }, \
169 .show = psmouse_attr_show_helper, \
170 .store = psmouse_attr_set_helper, \
171 }, \
172 .data = _data, \
173 .show = _show, \
174 .set = _set, \
175 .protect = _protect, \
176}
177
178#define __PSMOUSE_DEFINE_ATTR(_name, _mode, _data, _show, _set, _protect) \
179 static ssize_t _show(struct psmouse *, void *, char *); \
180 static ssize_t _set(struct psmouse *, void *, const char *, size_t); \
181 __PSMOUSE_DEFINE_ATTR_VAR(_name, _mode, _data, _show, _set, _protect)
182
183#define PSMOUSE_DEFINE_ATTR(_name, _mode, _data, _show, _set) \
184 __PSMOUSE_DEFINE_ATTR(_name, _mode, _data, _show, _set, true)
185
186#define PSMOUSE_DEFINE_RO_ATTR(_name, _mode, _data, _show) \
187 static ssize_t _show(struct psmouse *, void *, char *); \
188 __PSMOUSE_DEFINE_ATTR_VAR(_name, _mode, _data, _show, NULL, true)
189
190#define PSMOUSE_DEFINE_WO_ATTR(_name, _mode, _data, _set) \
191 static ssize_t _set(struct psmouse *, void *, const char *, size_t); \
192 __PSMOUSE_DEFINE_ATTR_VAR(_name, _mode, _data, NULL, _set, true)
193
194#ifndef psmouse_fmt
195#define psmouse_fmt(fmt) KBUILD_BASENAME ": " fmt
196#endif
197
198#define psmouse_dbg(psmouse, format, ...) \
199 dev_dbg(&(psmouse)->ps2dev.serio->dev, \
200 psmouse_fmt(format), ##__VA_ARGS__)
201#define psmouse_info(psmouse, format, ...) \
202 dev_info(&(psmouse)->ps2dev.serio->dev, \
203 psmouse_fmt(format), ##__VA_ARGS__)
204#define psmouse_warn(psmouse, format, ...) \
205 dev_warn(&(psmouse)->ps2dev.serio->dev, \
206 psmouse_fmt(format), ##__VA_ARGS__)
207#define psmouse_err(psmouse, format, ...) \
208 dev_err(&(psmouse)->ps2dev.serio->dev, \
209 psmouse_fmt(format), ##__VA_ARGS__)
210#define psmouse_notice(psmouse, format, ...) \
211 dev_notice(&(psmouse)->ps2dev.serio->dev, \
212 psmouse_fmt(format), ##__VA_ARGS__)
213#define psmouse_printk(level, psmouse, format, ...) \
214 dev_printk(level, \
215 &(psmouse)->ps2dev.serio->dev, \
216 psmouse_fmt(format), ##__VA_ARGS__)
217
218#ifdef CONFIG_MOUSE_PS2_SMBUS
219
220int psmouse_smbus_module_init(void);
221void psmouse_smbus_module_exit(void);
222
223struct i2c_board_info;
224
225int psmouse_smbus_init(struct psmouse *psmouse,
226 const struct i2c_board_info *board,
227 const void *pdata, size_t pdata_size,
228 bool need_deactivate,
229 bool leave_breadcrumbs);
230void psmouse_smbus_cleanup(struct psmouse *psmouse);
231
232#else /* !CONFIG_MOUSE_PS2_SMBUS */
233
234static inline int psmouse_smbus_module_init(void)
235{
236 return 0;
237}
238
239static inline void psmouse_smbus_module_exit(void)
240{
241}
242
243static inline void psmouse_smbus_cleanup(struct psmouse *psmouse)
244{
245}
246
247#endif /* CONFIG_MOUSE_PS2_SMBUS */
248
249#endif /* _PSMOUSE_H */