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adb_bt.c revision 1.9 
      1 /*	$NetBSD: adb_bt.c,v 1.9 2025/06/16 07:38:33 macallan Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2006 Michael Lorenz
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: adb_bt.c,v 1.9 2025/06/16 07:38:33 macallan Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/systm.h>
     34 #include <sys/kernel.h>
     35 #include <sys/device.h>
     36 #include <sys/proc.h>
     37 
     38 #include <machine/autoconf.h>
     39 #include <machine/keyboard.h>
     40 
     41 #include <dev/adb/adbvar.h>
     42 
     43 #include "ioconf.h"
     44 
     45 #include "opt_wsdisplay_compat.h"
     46 #include "adbdebug.h"
     47 
     48 #ifdef ADBBT_DEBUG
     49 #define DPRINTF printf
     50 #else
     51 #define DPRINTF while (0) printf
     52 #endif
     53 
     54 #define BT_VOL_UP	0x06
     55 #define BT_VOL_DOWN	0x07
     56 #define BT_VOL_MUTE	0x08
     57 #define BT_BRT_UP	0x09
     58 #define BT_BRT_DOWN	0x0a
     59 #define BT_EJECT	0x0b
     60 #define BT_F7		0x0c
     61 #define BT_NUMLOCK	0x7f
     62 
     63 static int adbbt_match(device_t, cfdata_t, void *);
     64 static void adbbt_attach(device_t, device_t, void *);
     65 
     66 struct adbbt_softc {
     67 	device_t sc_dev;
     68 	struct adb_device *sc_adbdev;
     69 	struct adb_bus_accessops *sc_ops;
     70 	uint8_t sc_us;
     71 };
     72 
     73 /* Driver definition. */
     74 CFATTACH_DECL_NEW(adbbt, sizeof(struct adbbt_softc),
     75     adbbt_match, adbbt_attach, NULL, NULL);
     76 
     77 static void adbbt_handler(void *, int, uint8_t *);
     78 
     79 static int
     80 adbbt_match(device_t parent, cfdata_t cf, void *aux)
     81 {
     82 	struct adb_attach_args *aaa = aux;
     83 
     84 	if ((aaa->dev->original_addr == ADBADDR_MISC) &&
     85 	    (aaa->dev->handler_id == 0x1f))
     86 		return 100;
     87 	else
     88 		return 0;
     89 }
     90 
     91 static void
     92 adbbt_attach(device_t parent, device_t self, void *aux)
     93 {
     94 	struct adbbt_softc *sc = device_private(self);
     95 	struct adb_attach_args *aaa = aux;
     96 
     97 	sc->sc_dev = self;
     98 	sc->sc_ops = aaa->ops;
     99 	sc->sc_adbdev = aaa->dev;
    100 	sc->sc_adbdev->cookie = sc;
    101 	sc->sc_adbdev->handler = adbbt_handler;
    102 	sc->sc_us = ADBTALK(sc->sc_adbdev->current_addr, 0);
    103 
    104 	printf(" addr %d: button device\n", sc->sc_adbdev->current_addr);
    105 }
    106 
    107 static void
    108 adbbt_handler(void *cookie, int len, uint8_t *data)
    109 {
    110 	/* struct adbbt_softc *sc = cookie; */
    111 	uint8_t k, scancode;
    112 
    113 #ifdef ADBBT_DEBUG
    114 	struct adbbt_softc *sc = cookie;
    115 	int i;
    116 	printf("%s: %02x - ", device_xname(sc->sc_dev), sc->sc_us);
    117 	for (i = 0; i < len; i++) {
    118 		printf(" %02x", data[i]);
    119 	}
    120 	printf("\n");
    121 #endif
    122 	k = data[2];
    123 	scancode = ADBK_KEYVAL(k);
    124 	if ((scancode < 6) || (scancode > 0x0c))
    125 		return;
    126 
    127 	if (ADBK_PRESS(k)) {
    128 
    129 		switch (scancode) {
    130 			case BT_VOL_UP:
    131 				pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP);
    132 				break;
    133 			case BT_VOL_DOWN:
    134 				pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN);
    135 				break;
    136 			case BT_VOL_MUTE:
    137 				pmf_event_inject(NULL,
    138 				    PMFE_AUDIO_VOLUME_TOGGLE);
    139 				break;
    140 			case BT_BRT_UP:
    141 				pmf_event_inject(NULL,
    142 				    PMFE_DISPLAY_BRIGHTNESS_UP);
    143 				break;
    144 			case BT_BRT_DOWN:
    145 				pmf_event_inject(NULL,
    146 				    PMFE_DISPLAY_BRIGHTNESS_DOWN);
    147 				break;
    148 		}
    149 	}
    150 }
    151