80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
#ifndef __KEYBOARD_H
|
|
#define __KEYBOARD_H
|
|
|
|
#include <input.h>
|
|
#include <stdio_dev.h>
|
|
|
|
/**
|
|
* struct keyboard_priv - information about a keyboard, for the uclass
|
|
*
|
|
* @sdev: stdio device
|
|
* @input: input configuration (the driver may use this if desired)
|
|
*/
|
|
struct keyboard_priv {
|
|
struct stdio_dev sdev;
|
|
|
|
/*
|
|
* This is set up by the uclass but will only be used if the driver
|
|
* sets input.dev to its device pointer (it is initially NULL).
|
|
*/
|
|
struct input_config input;
|
|
};
|
|
|
|
/**
|
|
* struct keyboard_ops - keyboard device operations
|
|
*/
|
|
struct keyboard_ops {
|
|
/**
|
|
* start() - enable the keyboard ready for use
|
|
*
|
|
* @dev: Device to enable
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int (*start)(struct udevice *dev);
|
|
|
|
/**
|
|
* stop() - disable the keyboard when no-longer needed
|
|
*
|
|
* @dev: Device to disable
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int (*stop)(struct udevice *dev);
|
|
|
|
/**
|
|
* tstc() - check if a key is available
|
|
*
|
|
* @dev: Device to check
|
|
* @return 0 if no key is available, 1 if a key is available, -ve on
|
|
* error
|
|
*/
|
|
int (*tstc)(struct udevice *dev);
|
|
|
|
/**
|
|
* getc() - get a key
|
|
*
|
|
* TODO(sjg@chromium.org): At present this method may wait if it calls
|
|
* input_getc().
|
|
*
|
|
* @dev: Device to read from
|
|
* @return -EAGAIN if no key is available, otherwise key value read
|
|
* (as ASCII).
|
|
*/
|
|
int (*getc)(struct udevice *dev);
|
|
|
|
/**
|
|
* update_leds() - update keyboard LEDs
|
|
*
|
|
* This is called when the LEDs have changed and need to be updated.
|
|
* For example, if 'caps lock' is pressed then this method will be
|
|
* called with the new LED value.
|
|
*
|
|
* @dev: Device to update
|
|
* @leds: New LED mask (see INPUT_LED_... in input.h)
|
|
*/
|
|
int (*update_leds)(struct udevice *dev, int leds);
|
|
};
|
|
|
|
#define keyboard_get_ops(dev) ((struct keyboard_ops *)(dev)->driver->ops)
|
|
|
|
#endif /* __KEYBOARD_H */
|