| Heiko Stübner | 3bfd5c5 | 2011-11-29 11:04:09 -0800 | [diff] [blame] | 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 |