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TOMOYO Linux Cross Reference
Linux/include/linux/input/gpio_tilt.h

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  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 

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