1 #ifndef _INPUT_GPIO_TILT_H
2 #define _INPUT_GPIO_TILT_H
3 
4 /**
5  * struct gpio_tilt_axis - Axis used by the tilt switch
6  * @axis:		Constant describing the axis, e.g. ABS_X
7  * @min:		minimum value for abs_param
8  * @max:		maximum value for abs_param
9  * @fuzz:		fuzz value for abs_param
10  * @flat:		flat value for abs_param
11  */
12 struct gpio_tilt_axis {
13 	int axis;
14 	int min;
15 	int max;
16 	int fuzz;
17 	int flat;
18 };
19 
20 /**
21  * struct gpio_tilt_state - state description
22  * @gpios:		bitfield of gpio target-states for the value
23  * @axes:		array containing the axes settings for the gpio state
24  *			The array indizes must correspond to the axes defined
25  *			in platform_data
26  *
27  * This structure describes a supported axis settings
28  * and the necessary gpio-state which represent it.
29  *
30  * The n-th bit in the bitfield describes the state of the n-th GPIO
31  * from the gpios-array defined in gpio_regulator_config below.
32  */
33 struct gpio_tilt_state {
34 	int gpios;
35 	int *axes;
36 };
37 
38 /**
39  * struct gpio_tilt_platform_data
40  * @gpios:		Array containing the gpios determining the tilt state
41  * @nr_gpios:		Number of gpios
42  * @axes:		Array of gpio_tilt_axis descriptions
43  * @nr_axes:		Number of axes
44  * @states:		Array of gpio_tilt_state entries describing
45  *			the gpio state for specific tilts
46  * @nr_states:		Number of states available
47  * @debounce_interval:	debounce ticks interval in msecs
48  * @poll_interval:	polling interval in msecs - for polling driver only
49  * @enable:		callback to enable the tilt switch
50  * @disable:		callback to disable the tilt switch
51  *
52  * This structure contains gpio-tilt-switch configuration
53  * information that must be passed by platform code to the
54  * gpio-tilt input driver.
55  */
56 struct gpio_tilt_platform_data {
57 	struct gpio *gpios;
58 	int nr_gpios;
59 
60 	struct gpio_tilt_axis *axes;
61 	int nr_axes;
62 
63 	struct gpio_tilt_state *states;
64 	int nr_states;
65 
66 	int debounce_interval;
67 
68 	unsigned int poll_interval;
69 	int (*enable)(struct device *dev);
70 	void (*disable)(struct device *dev);
71 };
72 
73 #endif
74