1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * OLPC HGPK (XO-1) touchpad PS/2 mouse driver
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #ifndef _HGPK_H
7*4882a593Smuzhiyun #define _HGPK_H
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #define HGPK_GS 0xff /* The GlideSensor */
10*4882a593Smuzhiyun #define HGPK_PT 0xcf /* The PenTablet */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun enum hgpk_model_t {
13*4882a593Smuzhiyun HGPK_MODEL_PREA = 0x0a, /* pre-B1s */
14*4882a593Smuzhiyun HGPK_MODEL_A = 0x14, /* found on B1s, PT disabled in hardware */
15*4882a593Smuzhiyun HGPK_MODEL_B = 0x28, /* B2s, has capacitance issues */
16*4882a593Smuzhiyun HGPK_MODEL_C = 0x3c,
17*4882a593Smuzhiyun HGPK_MODEL_D = 0x50, /* C1, mass production */
18*4882a593Smuzhiyun };
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun enum hgpk_spew_flag {
21*4882a593Smuzhiyun NO_SPEW,
22*4882a593Smuzhiyun MAYBE_SPEWING,
23*4882a593Smuzhiyun SPEW_DETECTED,
24*4882a593Smuzhiyun RECALIBRATING,
25*4882a593Smuzhiyun };
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun #define SPEW_WATCH_COUNT 42 /* at 12ms/packet, this is 1/2 second */
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun enum hgpk_mode {
30*4882a593Smuzhiyun HGPK_MODE_MOUSE,
31*4882a593Smuzhiyun HGPK_MODE_GLIDESENSOR,
32*4882a593Smuzhiyun HGPK_MODE_PENTABLET,
33*4882a593Smuzhiyun HGPK_MODE_INVALID
34*4882a593Smuzhiyun };
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun struct hgpk_data {
37*4882a593Smuzhiyun struct psmouse *psmouse;
38*4882a593Smuzhiyun enum hgpk_mode mode;
39*4882a593Smuzhiyun bool powered;
40*4882a593Smuzhiyun enum hgpk_spew_flag spew_flag;
41*4882a593Smuzhiyun int spew_count, x_tally, y_tally; /* spew detection */
42*4882a593Smuzhiyun unsigned long recalib_window;
43*4882a593Smuzhiyun struct delayed_work recalib_wq;
44*4882a593Smuzhiyun int abs_x, abs_y;
45*4882a593Smuzhiyun int dupe_count;
46*4882a593Smuzhiyun int xbigj, ybigj, xlast, ylast; /* jumpiness detection */
47*4882a593Smuzhiyun int xsaw_secondary, ysaw_secondary; /* jumpiness detection */
48*4882a593Smuzhiyun };
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun int hgpk_detect(struct psmouse *psmouse, bool set_properties);
51*4882a593Smuzhiyun int hgpk_init(struct psmouse *psmouse);
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun #ifdef CONFIG_MOUSE_PS2_OLPC
54*4882a593Smuzhiyun void hgpk_module_init(void);
55*4882a593Smuzhiyun #else
hgpk_module_init(void)56*4882a593Smuzhiyun static inline void hgpk_module_init(void)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun #endif
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun #endif
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