LXR linux/include/linux/input/gpio

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _INPUT_GPIO_TILT_H
   3#define _INPUT_GPIO_TILT_H
   4
   5/**
   6 * struct gpio_tilt_axis - Axis used by the tilt switch
   7 * @axis:               Constant describing the axis, e.g. ABS_X
   8 * @min:                minimum value for abs_param
   9 * @max:                maximum value for abs_param
  10 * @fuzz:               fuzz value for abs_param
  11 * @flat:               flat value for abs_param
  12 */
  13struct gpio_tilt_axis {
  14        int axis;
  15        int min;
  16        int max;
  17        int fuzz;
  18        int flat;
  19};
  20
  21/**
  22 * struct gpio_tilt_state - state description
  23 * @gpios:              bitfield of gpio target-states for the value
  24 * @axes:               array containing the axes settings for the gpio state
  25 *                      The array indizes must correspond to the axes defined
  26 *                      in platform_data
  27 *
  28 * This structure describes a supported axis settings
  29 * and the necessary gpio-state which represent it.
  30 *
  31 * The n-th bit in the bitfield describes the state of the n-th GPIO
  32 * from the gpios-array defined in gpio_regulator_config below.
  33 */
  34struct gpio_tilt_state {
  35        int gpios;
  36        int *axes;
  37};
  38
  39/**
  40 * struct gpio_tilt_platform_data
  41 * @gpios:              Array containing the gpios determining the tilt state
  42 * @nr_gpios:           Number of gpios
  43 * @axes:               Array of gpio_tilt_axis descriptions
  44 * @nr_axes:            Number of axes
  45 * @states:             Array of gpio_tilt_state entries describing
  46 *                      the gpio state for specific tilts
  47 * @nr_states:          Number of states available
  48 * @debounce_interval:  debounce ticks interval in msecs
  49 * @poll_interval:      polling interval in msecs - for polling driver only
  50 * @enable:             callback to enable the tilt switch
  51 * @disable:            callback to disable the tilt switch
  52 *
  53 * This structure contains gpio-tilt-switch configuration
  54 * information that must be passed by platform code to the
  55 * gpio-tilt input driver.
  56 */
  57struct gpio_tilt_platform_data {
  58        struct gpio *gpios;
  59        int nr_gpios;
  60
  61        struct gpio_tilt_axis *axes;
  62        int nr_axes;
  63
  64        struct gpio_tilt_state *states;
  65        int nr_states;
  66
  67        int debounce_interval;
  68
  69        unsigned int poll_interval;
  70        int (*enable)(struct device *dev);
  71        void (*disable)(struct device *dev);
  72};
  73
  74#endif
  75