1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * OLPC HGPK (XO-1) touchpad PS/2 mouse driver |
4 | */ |
5 | |
6 | #ifndef _HGPK_H |
7 | #define _HGPK_H |
8 | |
9 | #define HGPK_GS 0xff /* The GlideSensor */ |
10 | #define HGPK_PT 0xcf /* The PenTablet */ |
11 | |
12 | enum hgpk_model_t { |
13 | HGPK_MODEL_PREA = 0x0a, /* pre-B1s */ |
14 | HGPK_MODEL_A = 0x14, /* found on B1s, PT disabled in hardware */ |
15 | HGPK_MODEL_B = 0x28, /* B2s, has capacitance issues */ |
16 | HGPK_MODEL_C = 0x3c, |
17 | HGPK_MODEL_D = 0x50, /* C1, mass production */ |
18 | }; |
19 | |
20 | enum hgpk_spew_flag { |
21 | NO_SPEW, |
22 | MAYBE_SPEWING, |
23 | SPEW_DETECTED, |
24 | RECALIBRATING, |
25 | }; |
26 | |
27 | #define SPEW_WATCH_COUNT 42 /* at 12ms/packet, this is 1/2 second */ |
28 | |
29 | enum hgpk_mode { |
30 | HGPK_MODE_MOUSE, |
31 | HGPK_MODE_GLIDESENSOR, |
32 | HGPK_MODE_PENTABLET, |
33 | HGPK_MODE_INVALID |
34 | }; |
35 | |
36 | struct hgpk_data { |
37 | struct psmouse *psmouse; |
38 | enum hgpk_mode mode; |
39 | bool powered; |
40 | enum hgpk_spew_flag spew_flag; |
41 | int spew_count, x_tally, y_tally; /* spew detection */ |
42 | unsigned long recalib_window; |
43 | struct delayed_work recalib_wq; |
44 | int abs_x, abs_y; |
45 | int dupe_count; |
46 | int xbigj, ybigj, xlast, ylast; /* jumpiness detection */ |
47 | int xsaw_secondary, ysaw_secondary; /* jumpiness detection */ |
48 | }; |
49 | |
50 | int hgpk_detect(struct psmouse *psmouse, bool set_properties); |
51 | int hgpk_init(struct psmouse *psmouse); |
52 | |
53 | #ifdef CONFIG_MOUSE_PS2_OLPC |
54 | void hgpk_module_init(void); |
55 | #else |
56 | static inline void hgpk_module_init(void) |
57 | { |
58 | } |
59 | #endif |
60 | |
61 | #endif |
62 | |