LXR linux/include/linux/input/gpio

   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 */
  12struct 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 */
  33struct 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 */
  56struct 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