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t/include/input.h  view on Meta::CPAN

#define LED_SUSPEND		0x06
#define LED_MUTE		0x07
#define LED_MISC		0x08
#define LED_MAIL		0x09
#define LED_CHARGING		0x0a
#define LED_MAX			0x0f

/*
 * Autorepeat values
 */

#define REP_DELAY		0x00
#define REP_PERIOD		0x01
#define REP_MAX			0x01

/*
 * Sounds
 */

#define SND_CLICK		0x00
#define SND_BELL		0x01
#define SND_TONE		0x02
#define SND_MAX			0x07

/*
 * IDs.
 */

#define ID_BUS			0
#define ID_VENDOR		1
#define ID_PRODUCT		2
#define ID_VERSION		3

#define BUS_PCI			0x01
#define BUS_ISAPNP		0x02
#define BUS_USB			0x03
#define BUS_HIL			0x04
#define BUS_BLUETOOTH		0x05
#define BUS_VIRTUAL		0x06

#define BUS_ISA			0x10
#define BUS_I8042		0x11
#define BUS_XTKBD		0x12
#define BUS_RS232		0x13
#define BUS_GAMEPORT		0x14
#define BUS_PARPORT		0x15
#define BUS_AMIGA		0x16
#define BUS_ADB			0x17
#define BUS_I2C			0x18
#define BUS_HOST		0x19
#define BUS_GSC			0x1A

/*
 * Values describing the status of a force-feedback effect
 */
#define FF_STATUS_STOPPED	0x00
#define FF_STATUS_PLAYING	0x01
#define FF_STATUS_MAX		0x01

/*
 * Structures used in ioctls to upload effects to a device
 * They are pieces of a bigger structure (called ff_effect)
 */

/*
 * All duration values are expressed in ms. Values above 32767 ms (0x7fff)
 * should not be used and have unspecified results.
 */

/**
 * struct ff_replay - defines scheduling of the force-feedback effect
 * @length: duration of the effect
 * @delay: delay before effect should start playing
 */
struct ff_replay {
	__u16 length;
	__u16 delay;
};

/**
 * struct ff_trigger - defines what triggers the force-feedback effect
 * @button: number of the button triggering the effect
 * @interval: controls how soon the effect can be re-triggered
 */
struct ff_trigger {
	__u16 button;
	__u16 interval;
};

/**
 * struct ff_envelope - generic force-feedback effect envelope
 * @attack_length: duration of the attack (ms)
 * @attack_level: level at the beginning of the attack
 * @fade_length: duration of fade (ms)
 * @fade_level: level at the end of fade
 *
 * The @attack_level and @fade_level are absolute values; when applying
 * envelope force-feedback core will convert to positive/negative
 * value based on polarity of the default level of the effect.
 * Valid range for the attack and fade levels is 0x0000 - 0x7fff
 */
struct ff_envelope {
	__u16 attack_length;
	__u16 attack_level;
	__u16 fade_length;
	__u16 fade_level;
};

/**
 * struct ff_constant_effect - defines parameters of a constant force-feedback effect
 * @level: strength of the effect; may be negative
 * @envelope: envelope data
 */
struct ff_constant_effect {
	__s16 level;
	struct ff_envelope envelope;
};

/**
 * struct ff_ramp_effect - defines parameters of a ramp force-feedback effect
 * @start_level: beginning strength of the effect; may be negative
 * @end_level: final strength of the effect; may be negative
 * @envelope: envelope data
 */
struct ff_ramp_effect {
	__s16 start_level;
	__s16 end_level;
	struct ff_envelope envelope;
};

/**
 * struct ff_condition_effect - defines a spring or friction force-feedback effect
 * @right_saturation: maximum level when joystick moved all way to the right
 * @left_saturation: same for the left side
 * @right_coeff: controls how fast the force grows when the joystick moves
 *	to the right
 * @left_coeff: same for the left side
 * @deadband: size of the dead zone, where no force is produced
 * @center: position of the dead zone
 */
struct ff_condition_effect {
	__u16 right_saturation;
	__u16 left_saturation;

	__s16 right_coeff;
	__s16 left_coeff;

	__u16 deadband;
	__s16 center;
};

/**
 * struct ff_periodic_effect - defines parameters of a periodic force-feedback effect
 * @waveform: kind of the effect (wave)
 * @period: period of the wave (ms)
 * @magnitude: peak value
 * @offset: mean value of the wave (roughly)
 * @phase: 'horizontal' shift
 * @envelope: envelope data
 * @custom_len: number of samples (FF_CUSTOM only)
 * @custom_data: buffer of samples (FF_CUSTOM only)
 *
 * Known waveforms - FF_SQUARE, FF_TRIANGLE, FF_SINE, FF_SAW_UP,
 * FF_SAW_DOWN, FF_CUSTOM. The exact syntax FF_CUSTOM is undefined
 * for the time being as no driver supports it yet.
 *
 * Note: the data pointed by custom_data is copied by the driver.
 * You can therefore dispose of the memory after the upload/update.
 */
struct ff_periodic_effect {
	__u16 waveform;
	__u16 period;
	__s16 magnitude;
	__s16 offset;
	__u16 phase;

	struct ff_envelope envelope;

	__u32 custom_len;
	__s16 *custom_data;
};

/**
 * struct ff_rumble_effect - defines parameters of a periodic force-feedback effect
 * @strong_magnitude: magnitude of the heavy motor
 * @weak_magnitude: magnitude of the light one
 *
 * Some rumble pads have two motors of different weight. Strong_magnitude
 * represents the magnitude of the vibration generated by the heavy one.
 */
struct ff_rumble_effect {
	__u16 strong_magnitude;
	__u16 weak_magnitude;
};

/**
 * struct ff_effect - defines force feedback effect
 * @type: type of the effect (FF_CONSTANT, FF_PERIODIC, FF_RAMP, FF_SPRING,
 *	FF_FRICTION, FF_DAMPER, FF_RUMBLE, FF_INERTIA, or FF_CUSTOM)
 * @id: an unique id assigned to an effect
 * @direction: direction of the effect
 * @trigger: trigger conditions (struct ff_trigger)
 * @replay: scheduling of the effect (struct ff_replay)
 * @u: effect-specific structure (one of ff_constant_effect, ff_ramp_effect,
 *	ff_periodic_effect, ff_condition_effect, ff_rumble_effect) further
 *	defining effect parameters
 *
 * This structure is sent through ioctl from the application to the driver.
 * To create a new effect aplication should set its @id to -1; the kernel
 * will return assigned @id which can later be used to update or delete
 * this effect.
 *
 * Direction of the effect is encoded as follows:
 *	0 deg -> 0x0000 (down)
 *	90 deg -> 0x4000 (left)
 *	180 deg -> 0x8000 (up)
 *	270 deg -> 0xC000 (right)
 */
struct ff_effect {
	__u16 type;
	__s16 id;
	__u16 direction;
	struct ff_trigger trigger;
	struct ff_replay replay;

	union {
		struct ff_constant_effect constant;
		struct ff_ramp_effect ramp;

t/include/input.h  view on Meta::CPAN

void input_unregister_device(struct input_dev *);

int input_register_handler(struct input_handler *);
void input_unregister_handler(struct input_handler *);

int input_grab_device(struct input_handle *);
void input_release_device(struct input_handle *);

int input_open_device(struct input_handle *);
void input_close_device(struct input_handle *);

int input_flush_device(struct input_handle* handle, struct file* file);

void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value);
void input_inject_event(struct input_handle *handle, unsigned int type, unsigned int code, int value);

static inline void input_report_key(struct input_dev *dev, unsigned int code, int value)
{
	input_event(dev, EV_KEY, code, !!value);
}

static inline void input_report_rel(struct input_dev *dev, unsigned int code, int value)
{
	input_event(dev, EV_REL, code, value);
}

static inline void input_report_abs(struct input_dev *dev, unsigned int code, int value)
{
	input_event(dev, EV_ABS, code, value);
}

static inline void input_report_ff_status(struct input_dev *dev, unsigned int code, int value)
{
	input_event(dev, EV_FF_STATUS, code, value);
}

static inline void input_report_switch(struct input_dev *dev, unsigned int code, int value)
{
	input_event(dev, EV_SW, code, !!value);
}

static inline void input_sync(struct input_dev *dev)
{
	input_event(dev, EV_SYN, SYN_REPORT, 0);
}

static inline void input_set_abs_params(struct input_dev *dev, int axis, int min, int max, int fuzz, int flat)
{
	dev->absmin[axis] = min;
	dev->absmax[axis] = max;
	dev->absfuzz[axis] = fuzz;
	dev->absflat[axis] = flat;

	dev->absbit[LONG(axis)] |= BIT(axis);
}

extern struct class input_class;

/**
 * struct ff_device - force-feedback part of an input device
 * @upload: Called to upload an new effect into device
 * @erase: Called to erase an effect from device
 * @playback: Called to request device to start playing specified effect
 * @set_gain: Called to set specified gain
 * @set_autocenter: Called to auto-center device
 * @destroy: called by input core when parent input device is being
 *	destroyed
 * @private: driver-specific data, will be freed automatically
 * @ffbit: bitmap of force feedback capabilities truly supported by
 *	device (not emulated like ones in input_dev->ffbit)
 * @mutex: mutex for serializing access to the device
 * @max_effects: maximum number of effects supported by device
 * @effects: pointer to an array of effects currently loaded into device
 * @effect_owners: array of effect owners; when file handle owning
 *	an effect gets closed the effcet is automatically erased
 *
 * Every force-feedback device must implement upload() and playback()
 * methods; erase() is optional. set_gain() and set_autocenter() need
 * only be implemented if driver sets up FF_GAIN and FF_AUTOCENTER
 * bits.
 */
struct ff_device {
	int (*upload)(struct input_dev *dev, struct ff_effect *effect,
		      struct ff_effect *old);
	int (*erase)(struct input_dev *dev, int effect_id);

	int (*playback)(struct input_dev *dev, int effect_id, int value);
	void (*set_gain)(struct input_dev *dev, u16 gain);
	void (*set_autocenter)(struct input_dev *dev, u16 magnitude);

	void (*destroy)(struct ff_device *);

	void *private;

	unsigned long ffbit[NBITS(FF_MAX)];

	struct mutex mutex;

	int max_effects;
	struct ff_effect *effects;
	struct file *effect_owners[];
};

int input_ff_create(struct input_dev *dev, int max_effects);
void input_ff_destroy(struct input_dev *dev);

int input_ff_event(struct input_dev *dev, unsigned int type, unsigned int code, int value);

int input_ff_upload(struct input_dev *dev, struct ff_effect *effect, struct file *file);
int input_ff_erase(struct input_dev *dev, int effect_id, struct file *file);

int input_ff_create_memless(struct input_dev *dev, void *data,
		int (*play_effect)(struct input_dev *, void *, struct ff_effect *));

#endif
#endif