1 #ifndef __KEYBOARD_H 2 #define __KEYBOARD_H 3 4 #include <input.h> 5 #include <stdio_dev.h> 6 7 /** 8 * struct keyboard_priv - information about a keyboard, for the uclass 9 * 10 * @sdev: stdio device 11 * @input: input configuration (the driver may use this if desired) 12 */ 13 struct keyboard_priv { 14 struct stdio_dev sdev; 15 16 /* 17 * This is set up by the uclass but will only be used if the driver 18 * sets input.dev to its device pointer (it is initially NULL). 19 */ 20 struct input_config input; 21 }; 22 23 /** 24 * struct keyboard_ops - keyboard device operations 25 */ 26 struct keyboard_ops { 27 /** 28 * start() - enable the keyboard ready for use 29 * 30 * @dev: Device to enable 31 * @return 0 if OK, -ve on error 32 */ 33 int (*start)(struct udevice *dev); 34 35 /** 36 * stop() - disable the keyboard when no-longer needed 37 * 38 * @dev: Device to disable 39 * @return 0 if OK, -ve on error 40 */ 41 int (*stop)(struct udevice *dev); 42 43 /** 44 * tstc() - check if a key is available 45 * 46 * @dev: Device to check 47 * @return 0 if no key is available, 1 if a key is available, -ve on 48 * error 49 */ 50 int (*tstc)(struct udevice *dev); 51 52 /** 53 * getc() - get a key 54 * 55 * TODO(sjg (at) chromium.org): At present this method may wait if it calls 56 * input_getc(). 57 * 58 * @dev: Device to read from 59 * @return -EAGAIN if no key is available, otherwise key value read 60 * (as ASCII). 61 */ 62 int (*getc)(struct udevice *dev); 63 64 /** 65 * update_leds() - update keyboard LEDs 66 * 67 * This is called when the LEDs have changed and need to be updated. 68 * For example, if 'caps lock' is pressed then this method will be 69 * called with the new LED value. 70 * 71 * @dev: Device to update 72 * @leds: New LED mask (see INPUT_LED_... in input.h) 73 */ 74 int (*update_leds)(struct udevice *dev, int leds); 75 }; 76 77 #define keyboard_get_ops(dev) ((struct keyboard_ops *)(dev)->driver->ops) 78 79 #endif /* __KEYBOARD_H */ 80
