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,
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 delayed_work 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
135void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work,
136 unsigned long delay);
137int psmouse_reset(struct psmouse *psmouse);
138void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state);
139void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution);
140psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse);
141int psmouse_activate(struct psmouse *psmouse);
142int psmouse_deactivate(struct psmouse *psmouse);
143bool psmouse_matches_pnp_id(struct psmouse *psmouse, const char * const ids[]);
144
145void psmouse_report_standard_buttons(struct input_dev *, u8 buttons);
146void psmouse_report_standard_motion(struct input_dev *, u8 *packet);
147void psmouse_report_standard_packet(struct input_dev *, u8 *packet);
148
149struct psmouse_attribute {
150 struct device_attribute dattr;
151 void *data;
152 ssize_t (*show)(struct psmouse *psmouse, void *data, char *buf);
153 ssize_t (*set)(struct psmouse *psmouse, void *data,
154 const char *buf, size_t count);
155 bool protect;
156};
157#define to_psmouse_attr(a) container_of((a), struct psmouse_attribute, dattr)
158
159ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *attr,
160 char *buf);
161ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *attr,
162 const char *buf, size_t count);
163
164#define __PSMOUSE_DEFINE_ATTR_VAR(_name, _mode, _data, _show, _set, _protect) \
165static struct psmouse_attribute psmouse_attr_##_name = { \
166 .dattr = { \
167 .attr = { \
168 .name = __stringify(_name), \
169 .mode = _mode, \
170 }, \
171 .show = psmouse_attr_show_helper, \
172 .store = psmouse_attr_set_helper, \
173 }, \
174 .data = _data, \
175 .show = _show, \
176 .set = _set, \
177 .protect = _protect, \
178}
179
180#define __PSMOUSE_DEFINE_ATTR(_name, _mode, _data, _show, _set, _protect) \
181 static ssize_t _show(struct psmouse *, void *, char *); \
182 static ssize_t _set(struct psmouse *, void *, const char *, size_t); \
183 __PSMOUSE_DEFINE_ATTR_VAR(_name, _mode, _data, _show, _set, _protect)
184
185#define PSMOUSE_DEFINE_ATTR(_name, _mode, _data, _show, _set) \
186 __PSMOUSE_DEFINE_ATTR(_name, _mode, _data, _show, _set, true)
187
188#define PSMOUSE_DEFINE_RO_ATTR(_name, _mode, _data, _show) \
189 static ssize_t _show(struct psmouse *, void *, char *); \
190 __PSMOUSE_DEFINE_ATTR_VAR(_name, _mode, _data, _show, NULL, true)
191
192#define PSMOUSE_DEFINE_WO_ATTR(_name, _mode, _data, _set) \
193 static ssize_t _set(struct psmouse *, void *, const char *, size_t); \
194 __PSMOUSE_DEFINE_ATTR_VAR(_name, _mode, _data, NULL, _set, true)
195
196#ifndef psmouse_fmt
197#define psmouse_fmt(fmt) KBUILD_BASENAME ": " fmt
198#endif
199
200#define psmouse_dbg(psmouse, format, ...) \
201 dev_dbg(&(psmouse)->ps2dev.serio->dev, \
202 psmouse_fmt(format), ##__VA_ARGS__)
203#define psmouse_info(psmouse, format, ...) \
204 dev_info(&(psmouse)->ps2dev.serio->dev, \
205 psmouse_fmt(format), ##__VA_ARGS__)
206#define psmouse_warn(psmouse, format, ...) \
207 dev_warn(&(psmouse)->ps2dev.serio->dev, \
208 psmouse_fmt(format), ##__VA_ARGS__)
209#define psmouse_err(psmouse, format, ...) \
210 dev_err(&(psmouse)->ps2dev.serio->dev, \
211 psmouse_fmt(format), ##__VA_ARGS__)
212#define psmouse_notice(psmouse, format, ...) \
213 dev_notice(&(psmouse)->ps2dev.serio->dev, \
214 psmouse_fmt(format), ##__VA_ARGS__)
215#define psmouse_printk(level, psmouse, format, ...) \
216 dev_printk(level, \
217 &(psmouse)->ps2dev.serio->dev, \
218 psmouse_fmt(format), ##__VA_ARGS__)
219
220#ifdef CONFIG_MOUSE_PS2_SMBUS
221
222int psmouse_smbus_module_init(void);
223void psmouse_smbus_module_exit(void);
224
225struct i2c_board_info;
226
227int psmouse_smbus_init(struct psmouse *psmouse,
228 const struct i2c_board_info *board,
229 const void *pdata, size_t pdata_size,
230 bool need_deactivate,
231 bool leave_breadcrumbs);
232void psmouse_smbus_cleanup(struct psmouse *psmouse);
233
234#else /* !CONFIG_MOUSE_PS2_SMBUS */
235
236static inline int psmouse_smbus_module_init(void)
237{
238 return 0;
239}
240
241static inline void psmouse_smbus_module_exit(void)
242{
243}
244
245static inline void psmouse_smbus_cleanup(struct psmouse *psmouse)
246{
247}
248
249#endif /* CONFIG_MOUSE_PS2_SMBUS */
250
251#endif /* _PSMOUSE_H */
252