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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Synaptics TouchPad PS/2 mouse driver
4 */
5
6#ifndef _SYNAPTICS_H
7#define _SYNAPTICS_H
8
9/* synaptics queries */
10#define SYN_QUE_IDENTIFY 0x00
11#define SYN_QUE_MODES 0x01
12#define SYN_QUE_CAPABILITIES 0x02
13#define SYN_QUE_MODEL 0x03
14#define SYN_QUE_SERIAL_NUMBER_PREFIX 0x06
15#define SYN_QUE_SERIAL_NUMBER_SUFFIX 0x07
16#define SYN_QUE_RESOLUTION 0x08
17#define SYN_QUE_EXT_CAPAB 0x09
18#define SYN_QUE_FIRMWARE_ID 0x0a
19#define SYN_QUE_EXT_CAPAB_0C 0x0c
20#define SYN_QUE_EXT_MAX_COORDS 0x0d
21#define SYN_QUE_EXT_MIN_COORDS 0x0f
22#define SYN_QUE_MEXT_CAPAB_10 0x10
23
24/* synaptics modes */
25#define SYN_BIT_ABSOLUTE_MODE BIT(7)
26#define SYN_BIT_HIGH_RATE BIT(6)
27#define SYN_BIT_SLEEP_MODE BIT(3)
28#define SYN_BIT_DISABLE_GESTURE BIT(2)
29#define SYN_BIT_FOUR_BYTE_CLIENT BIT(1)
30#define SYN_BIT_W_MODE BIT(0)
31
32/* synaptics model ID bits */
33#define SYN_MODEL_ROT180(m) ((m) & BIT(23))
34#define SYN_MODEL_PORTRAIT(m) ((m) & BIT(22))
35#define SYN_MODEL_SENSOR(m) (((m) & GENMASK(21, 16)) >> 16)
36#define SYN_MODEL_HARDWARE(m) (((m) & GENMASK(15, 9)) >> 9)
37#define SYN_MODEL_NEWABS(m) ((m) & BIT(7))
38#define SYN_MODEL_PEN(m) ((m) & BIT(6))
39#define SYN_MODEL_SIMPLIC(m) ((m) & BIT(5))
40#define SYN_MODEL_GEOMETRY(m) ((m) & GENMASK(3, 0))
41
42/* synaptics capability bits */
43#define SYN_CAP_EXTENDED(c) ((c) & BIT(23))
44#define SYN_CAP_MIDDLE_BUTTON(c) ((c) & BIT(18))
45#define SYN_CAP_PASS_THROUGH(c) ((c) & BIT(7))
46#define SYN_CAP_SLEEP(c) ((c) & BIT(4))
47#define SYN_CAP_FOUR_BUTTON(c) ((c) & BIT(3))
48#define SYN_CAP_MULTIFINGER(c) ((c) & BIT(1))
49#define SYN_CAP_PALMDETECT(c) ((c) & BIT(0))
50#define SYN_CAP_SUBMODEL_ID(c) (((c) & GENMASK(15, 8)) >> 8)
51#define SYN_EXT_CAP_REQUESTS(c) (((c) & GENMASK(22, 20)) >> 20)
52#define SYN_CAP_MB_MASK GENMASK(15, 12)
53#define SYN_CAP_MULTI_BUTTON_NO(ec) (((ec) & SYN_CAP_MB_MASK) >> 12)
54#define SYN_CAP_PRODUCT_ID(ec) (((ec) & GENMASK(23, 16)) >> 16)
55#define SYN_MEXT_CAP_BIT(m) ((m) & BIT(1))
56
57/*
58 * The following describes response for the 0x0c query.
59 *
60 * byte mask name meaning
61 * ---- ---- ------- ------------
62 * 1 0x01 adjustable threshold capacitive button sensitivity
63 * can be adjusted
64 * 1 0x02 report max query 0x0d gives max coord reported
65 * 1 0x04 clearpad sensor is ClearPad product
66 * 1 0x08 advanced gesture not particularly meaningful
67 * 1 0x10 clickpad bit 0 1-button ClickPad
68 * 1 0x60 multifinger mode identifies firmware finger counting
69 * (not reporting!) algorithm.
70 * Not particularly meaningful
71 * 1 0x80 covered pad W clipped to 14, 15 == pad mostly covered
72 * 2 0x01 clickpad bit 1 2-button ClickPad
73 * 2 0x02 deluxe LED controls touchpad support LED commands
74 * ala multimedia control bar
75 * 2 0x04 reduced filtering firmware does less filtering on
76 * position data, driver should watch
77 * for noise.
78 * 2 0x08 image sensor image sensor tracks 5 fingers, but only
79 * reports 2.
80 * 2 0x01 uniform clickpad whole clickpad moves instead of being
81 * hinged at the top.
82 * 2 0x20 report min query 0x0f gives min coord reported
83 */
84#define SYN_CAP_CLICKPAD(ex0c) ((ex0c) & BIT(20)) /* 1-button ClickPad */
85#define SYN_CAP_CLICKPAD2BTN(ex0c) ((ex0c) & BIT(8)) /* 2-button ClickPad */
86#define SYN_CAP_MAX_DIMENSIONS(ex0c) ((ex0c) & BIT(17))
87#define SYN_CAP_MIN_DIMENSIONS(ex0c) ((ex0c) & BIT(13))
88#define SYN_CAP_ADV_GESTURE(ex0c) ((ex0c) & BIT(19))
89#define SYN_CAP_REDUCED_FILTERING(ex0c) ((ex0c) & BIT(10))
90#define SYN_CAP_IMAGE_SENSOR(ex0c) ((ex0c) & BIT(11))
91#define SYN_CAP_INTERTOUCH(ex0c) ((ex0c) & BIT(14))
92
93/*
94 * The following descibes response for the 0x10 query.
95 *
96 * byte mask name meaning
97 * ---- ---- ------- ------------
98 * 1 0x01 ext buttons are stick buttons exported in the extended
99 * capability are actually meant to be used
100 * by the tracktick (pass-through).
101 * 1 0x02 SecurePad the touchpad is a SecurePad, so it
102 * contains a built-in fingerprint reader.
103 * 1 0xe0 more ext count how many more extented queries are
104 * available after this one.
105 * 2 0xff SecurePad width the width of the SecurePad fingerprint
106 * reader.
107 * 3 0xff SecurePad height the height of the SecurePad fingerprint
108 * reader.
109 */
110#define SYN_CAP_EXT_BUTTONS_STICK(ex10) ((ex10) & BIT(16))
111#define SYN_CAP_SECUREPAD(ex10) ((ex10) & BIT(17))
112
113#define SYN_EXT_BUTTON_STICK_L(eb) (((eb) & BIT(0)) >> 0)
114#define SYN_EXT_BUTTON_STICK_M(eb) (((eb) & BIT(1)) >> 1)
115#define SYN_EXT_BUTTON_STICK_R(eb) (((eb) & BIT(2)) >> 2)
116
117/* synaptics modes query bits */
118#define SYN_MODE_ABSOLUTE(m) ((m) & BIT(7))
119#define SYN_MODE_RATE(m) ((m) & BIT(6))
120#define SYN_MODE_BAUD_SLEEP(m) ((m) & BIT(3))
121#define SYN_MODE_DISABLE_GESTURE(m) ((m) & BIT(2))
122#define SYN_MODE_PACKSIZE(m) ((m) & BIT(1))
123#define SYN_MODE_WMODE(m) ((m) & BIT(0))
124
125/* synaptics identify query bits */
126#define SYN_ID_MODEL(i) (((i) & GENMASK(7, 4)) >> 4)
127#define SYN_ID_MAJOR(i) (((i) & GENMASK(3, 0)) >> 0)
128#define SYN_ID_MINOR(i) (((i) & GENMASK(23, 16)) >> 16)
129#define SYN_ID_FULL(i) ((SYN_ID_MAJOR(i) << 8) | SYN_ID_MINOR(i))
130#define SYN_ID_IS_SYNAPTICS(i) (((i) & GENMASK(15, 8)) == 0x004700U)
131#define SYN_ID_DISGEST_SUPPORTED(i) (SYN_ID_MAJOR(i) >= 4)
132
133/* synaptics special commands */
134#define SYN_PS_SET_MODE2 0x14
135#define SYN_PS_CLIENT_CMD 0x28
136
137/* amount to fuzz position data when touchpad reports reduced filtering */
138#define SYN_REDUCED_FILTER_FUZZ 8
139
140/* synaptics packet types */
141enum synaptics_pkt_type {
142 SYN_NEWABS,
143 SYN_NEWABS_STRICT,
144 SYN_NEWABS_RELAXED,
145 SYN_OLDABS,
146};
147
148/*
149 * A structure to describe the state of the touchpad hardware (buttons and pad)
150 */
151struct synaptics_hw_state {
152 int x;
153 int y;
154 int z;
155 int w;
156 unsigned int left:1;
157 unsigned int right:1;
158 unsigned int middle:1;
159 unsigned int up:1;
160 unsigned int down:1;
161 u8 ext_buttons;
162 s8 scroll;
163};
164
165/* Data read from the touchpad */
166struct synaptics_device_info {
167 u32 model_id; /* Model-ID */
168 u32 firmware_id; /* Firmware-ID */
169 u32 board_id; /* Board-ID */
170 u32 capabilities; /* Capabilities */
171 u32 ext_cap; /* Extended Capabilities */
172 u32 ext_cap_0c; /* Ext Caps from 0x0c query */
173 u32 ext_cap_10; /* Ext Caps from 0x10 query */
174 u32 identity; /* Identification */
175 u32 x_res, y_res; /* X/Y resolution in units/mm */
176 u32 x_max, y_max; /* Max coordinates (from FW) */
177 u32 x_min, y_min; /* Min coordinates (from FW) */
178};
179
180struct synaptics_data {
181 struct synaptics_device_info info;
182
183 enum synaptics_pkt_type pkt_type; /* packet type - old, new, etc */
184 u8 mode; /* current mode byte */
185 int scroll;
186
187 bool absolute_mode; /* run in Absolute mode */
188 bool disable_gesture; /* disable gestures */
189
190 struct serio *pt_port; /* Pass-through serio port */
191 bool pt_port_open;
192
193 /*
194 * Last received Advanced Gesture Mode (AGM) packet. An AGM packet
195 * contains position data for a second contact, at half resolution.
196 */
197 struct synaptics_hw_state agm;
198 unsigned int agm_count; /* finger count reported by agm */
199
200 /* ForcePad handling */
201 unsigned long press_start;
202 bool press;
203 bool report_press;
204 bool is_forcepad;
205};
206
207void synaptics_module_init(void);
208int synaptics_detect(struct psmouse *psmouse, bool set_properties);
209int synaptics_init_absolute(struct psmouse *psmouse);
210int synaptics_init_relative(struct psmouse *psmouse);
211int synaptics_init_smbus(struct psmouse *psmouse);
212int synaptics_init(struct psmouse *psmouse);
213void synaptics_reset(struct psmouse *psmouse);
214
215#endif /* _SYNAPTICS_H */