126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/* $NetBSD: abtn.c,v 1.1 1999/07/12 17:48:26 tsubai Exp $ */
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/*-
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* Copyright (C) 1999 Tsubai Masanari. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <macppc/dev/adbvar.h>
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#define NVRAM_BRIGHTNESS 0x140e
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#define ABTN_HANDLER_ID 31
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struct abtn_softc {
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struct device sc_dev;
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int origaddr; /* ADB device type */
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int adbaddr; /* current ADB address */
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int handler_id;
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int brightness; /* backlight brightness */
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int volume; /* speaker volume (not yet) */
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};
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static int abtn_match __P((struct device *, struct cfdata *, void *));
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static void abtn_attach __P((struct device *, struct device *, void *));
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static void abtn_adbcomplete __P((caddr_t, caddr_t, int));
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struct cfattach abtn_ca = {
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sizeof(struct abtn_softc), abtn_match, abtn_attach
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};
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int
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abtn_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct adb_attach_args *aa = aux;
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if (aa->origaddr == ADBADDR_MISC &&
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aa->handler_id == ABTN_HANDLER_ID)
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return 1;
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return 0;
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}
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void
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abtn_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct abtn_softc *sc = (struct abtn_softc *)self;
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struct adb_attach_args *aa = aux;
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ADBSetInfoBlock adbinfo;
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int bright;
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printf("brightness/volume button\n");
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bright = pm_read_nvram(NVRAM_BRIGHTNESS);
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pm_set_brightness(bright);
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sc->brightness = bright;
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sc->origaddr = aa->origaddr;
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sc->adbaddr = aa->adbaddr;
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sc->handler_id = aa->handler_id;
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adbinfo.siServiceRtPtr = (Ptr)abtn_adbcomplete;
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adbinfo.siDataAreaAddr = (caddr_t)sc;
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SetADBInfo(&adbinfo, sc->adbaddr);
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}
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void
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abtn_adbcomplete(buffer, data, adb_command)
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caddr_t buffer, data;
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int adb_command;
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{
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struct abtn_softc *sc = (struct abtn_softc *)data;
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u_int cmd;
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cmd = buffer[1];
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switch (cmd) {
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case 0x0a:
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sc->brightness -= 8;
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if (sc->brightness < 8)
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sc->brightness = 8;
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pm_set_brightness(sc->brightness);
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pm_write_nvram(NVRAM_BRIGHTNESS, sc->brightness);
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break;
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case 0x09:
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sc->brightness += 8;
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if (sc->brightness > 0x78)
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sc->brightness = 0x78;
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pm_set_brightness(sc->brightness);
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pm_write_nvram(NVRAM_BRIGHTNESS, sc->brightness);
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break;
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}
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}
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