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/drivers/input/mouse/hgpk.h

http://github.com/mirrors/linux
C Header | 61 lines | 47 code | 10 blank | 4 comment | 0 complexity | a61bdbec659ed9185398363eb9615f78 MD5 | raw file
 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
12enum 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
20enum 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
29enum hgpk_mode {
30	HGPK_MODE_MOUSE,
31	HGPK_MODE_GLIDESENSOR,
32	HGPK_MODE_PENTABLET,
33	HGPK_MODE_INVALID
34};
35
36struct 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
50int hgpk_detect(struct psmouse *psmouse, bool set_properties);
51int hgpk_init(struct psmouse *psmouse);
52
53#ifdef CONFIG_MOUSE_PS2_OLPC
54void hgpk_module_init(void);
55#else
56static inline void hgpk_module_init(void)
57{
58}
59#endif
60
61#endif