gp_ev_feedback.h

// SPDX-License-Identifier: LGPL-2.1-or-later
/*
 * Copyright (C) 2009-2022 Cyril Hrubis <metan@ucw.cz>
 */
 
/*
 
  Implements input device feedback, mostly keyboard leds but can include force
  feedback in joysticks as well.
 
 */
 
#ifndef INPUT_GP_EV_FEEDBACK_H
#define INPUT_GP_EV_FEEDBACK_H
 
#include <stdint.h>
#include <input/gp_types.h>
 
enum gp_ev_feedback_val_leds {
        GP_KBD_LED_NUM_LOCK = 0x01,
        GP_KBD_LED_CAPS_LOCK = 0x02,
        GP_KBD_LED_SCROLL_LOCK = 0x04,
        GP_KBD_LED_COMPOSE = 0x08,
        GP_KBD_LED_KANA = 0x10,
};
 
enum gp_ev_feedback_op_type {
        GP_EV_LEDS_ON,  /* Turns on leds in the val mask */
        GP_EV_LEDS_OFF, /* Turns off leds in the val mask */
        GP_EV_LEDS_GET, /* Returns leds status in the val field */
};
 
struct gp_ev_feedback_op {
        uint8_t op;
        uint8_t val;
};
 
struct gp_ev_feedback {
        int (*set_get)(gp_ev_feedback *self, gp_ev_feedback_op *op);
        gp_ev_feedback *next;
};
 
void gp_ev_feedback_set_all(gp_ev_feedback *root, gp_ev_feedback_op *op);
 
void gp_ev_feedback_register(gp_ev_feedback **root, gp_ev_feedback *self);
 
void gp_ev_feedback_unregister(gp_ev_feedback **root, gp_ev_feedback *self);
 
#endif /* INPUT_GP_EV_FEEDBACK_H */