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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/drivers/input/mouse/hgpk.h
15111 views
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/*

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 * OLPC HGPK (XO-1) touchpad PS/2 mouse driver

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 */

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#ifndef _HGPK_H

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#define _HGPK_H

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#define HGPK_GS		0xff       /* The GlideSensor */

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#define HGPK_PT		0xcf       /* The PenTablet */

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enum hgpk_model_t {

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	HGPK_MODEL_PREA = 0x0a,	/* pre-B1s */

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	HGPK_MODEL_A = 0x14,	/* found on B1s, PT disabled in hardware */

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	HGPK_MODEL_B = 0x28,	/* B2s, has capacitance issues */

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	HGPK_MODEL_C = 0x3c,

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	HGPK_MODEL_D = 0x50,	/* C1, mass production */

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};

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enum hgpk_spew_flag {

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	NO_SPEW,

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	MAYBE_SPEWING,

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	SPEW_DETECTED,

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	RECALIBRATING,

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};

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#define SPEW_WATCH_COUNT 42  /* at 12ms/packet, this is 1/2 second */

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enum hgpk_mode {

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	HGPK_MODE_MOUSE,

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	HGPK_MODE_GLIDESENSOR,

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	HGPK_MODE_PENTABLET,

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	HGPK_MODE_INVALID

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};

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struct hgpk_data {

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	struct psmouse *psmouse;

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	enum hgpk_mode mode;

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	bool powered;

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	enum hgpk_spew_flag spew_flag;

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	int spew_count, x_tally, y_tally;	/* spew detection */

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	unsigned long recalib_window;

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	struct delayed_work recalib_wq;

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	int abs_x, abs_y;

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	int dupe_count;

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	int xbigj, ybigj, xlast, ylast; /* jumpiness detection */

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	int xsaw_secondary, ysaw_secondary; /* jumpiness detection */

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};

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#define hgpk_dbg(psmouse, format, arg...)		\

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	dev_dbg(&(psmouse)->ps2dev.serio->dev, format, ## arg)

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#define hgpk_err(psmouse, format, arg...)		\

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	dev_err(&(psmouse)->ps2dev.serio->dev, format, ## arg)

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#define hgpk_info(psmouse, format, arg...)		\

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	dev_info(&(psmouse)->ps2dev.serio->dev, format, ## arg)

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#define hgpk_warn(psmouse, format, arg...)		\

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	dev_warn(&(psmouse)->ps2dev.serio->dev, format, ## arg)

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#define hgpk_notice(psmouse, format, arg...)		\

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	dev_notice(&(psmouse)->ps2dev.serio->dev, format, ## arg)

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#ifdef CONFIG_MOUSE_PS2_OLPC

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void hgpk_module_init(void);

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int hgpk_detect(struct psmouse *psmouse, bool set_properties);

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int hgpk_init(struct psmouse *psmouse);

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#else

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static inline void hgpk_module_init(void)

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{

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}

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static inline int hgpk_detect(struct psmouse *psmouse, bool set_properties)

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{

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	return -ENODEV;

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}

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static inline int hgpk_init(struct psmouse *psmouse)

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{

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	return -ENODEV;

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}

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#endif

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#endif

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