hgpk.h
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/*
* OLPC HGPK (XO-1) touchpad PS/2 mouse driver
*/
#ifndef _HGPK_H
#define _HGPK_H
#define HGPK_GS 0xff /* The GlideSensor */
#define HGPK_PT 0xcf /* The PenTablet */
enum hgpk_model_t {
HGPK_MODEL_PREA = 0x0a, /* pre-B1s */
HGPK_MODEL_A = 0x14, /* found on B1s, PT disabled in hardware */
HGPK_MODEL_B = 0x28, /* B2s, has capacitance issues */
HGPK_MODEL_C = 0x3c,
HGPK_MODEL_D = 0x50, /* C1, mass production */
};
enum hgpk_spew_flag {
NO_SPEW,
MAYBE_SPEWING,
SPEW_DETECTED,
RECALIBRATING,
};
#define SPEW_WATCH_COUNT 42 /* at 12ms/packet, this is 1/2 second */
enum hgpk_mode {
HGPK_MODE_MOUSE,
HGPK_MODE_GLIDESENSOR,
HGPK_MODE_PENTABLET,
HGPK_MODE_INVALID
};
struct hgpk_data {
struct psmouse *psmouse;
enum hgpk_mode mode;
bool powered;
enum hgpk_spew_flag spew_flag;
int spew_count, x_tally, y_tally; /* spew detection */
unsigned long recalib_window;
struct delayed_work recalib_wq;
int abs_x, abs_y;
int dupe_count;
int xbigj, ybigj, xlast, ylast; /* jumpiness detection */
int xsaw_secondary, ysaw_secondary; /* jumpiness detection */
};
#ifdef CONFIG_MOUSE_PS2_OLPC
void hgpk_module_init(void);
int hgpk_detect(struct psmouse *psmouse, bool set_properties);
int hgpk_init(struct psmouse *psmouse);
#else
static inline void hgpk_module_init(void)
{
}
static inline int hgpk_detect(struct psmouse *psmouse, bool set_properties)
{
return -ENODEV;
}
static inline int hgpk_init(struct psmouse *psmouse)
{
return -ENODEV;
}
#endif
#endif