From 2a4de23b5f78f076551a9a2ac52d83a64646a94f Mon Sep 17 00:00:00 2001 From: Linus Nielsen Feltzing Date: Mon, 24 Jun 2002 13:48:42 +0000 Subject: First version git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1152 a1c6a512-1295-4272-9138-f99709370657 --- firmware/backlight.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++ firmware/backlight.h | 27 +++++++++++++++ 2 files changed, 123 insertions(+) create mode 100644 firmware/backlight.c create mode 100644 firmware/backlight.h (limited to 'firmware') diff --git a/firmware/backlight.c b/firmware/backlight.c new file mode 100644 index 0000000000..c597b23c0b --- /dev/null +++ b/firmware/backlight.c @@ -0,0 +1,96 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2002 by Linus Nielsen Feltzing + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#include "config.h" +#include +#include "sh7034.h" +#include "kernel.h" +#include "thread.h" +#include "i2c.h" +#include "debug.h" +#include "rtc.h" +#include "settings.h" + +#define BACKLIGHT_ON 1 +#define BACKLIGHT_OFF 2 + +static void backlight_thread(void); +static char backlight_stack[0x100]; +static struct event_queue backlight_queue; + +static int backlight_timer; + +void backlight_thread(void) +{ + struct event ev; + + while(1) + { + queue_wait(&backlight_queue, &ev); + switch(ev.id) + { + case BACKLIGHT_ON: + backlight_timer = HZ*global_settings.backlight; + if(backlight_timer) + { +#ifdef HAVE_RTC + rtc_write(0x13, 0x10); +#else + PAIOR |= 0x40; +#endif + } + break; + case BACKLIGHT_OFF: +#ifdef HAVE_RTC + rtc_write(0x13, 0x00); +#else + PAIOR &= 0xbf; +#endif + break; + } + } +} + +void backlight_on(void) +{ + queue_post(&backlight_queue, BACKLIGHT_ON, NULL); +} + +void backlight_off(void) +{ + queue_post(&backlight_queue, BACKLIGHT_OFF, NULL); +} + +void backlight_tick(void) +{ + if(backlight_timer) + { + backlight_timer--; + if(backlight_timer == 0) + { + backlight_off(); + } + } +} + +void backlight_init(void) +{ + queue_init(&backlight_queue); + create_thread(backlight_thread, backlight_stack, sizeof(backlight_stack)); + backlight_on(); +} diff --git a/firmware/backlight.h b/firmware/backlight.h new file mode 100644 index 0000000000..2a59800918 --- /dev/null +++ b/firmware/backlight.h @@ -0,0 +1,27 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2002 by Daniel Stenberg + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#ifndef BACKLIGHT_H +#define BACKLIGHT_H + +void backlight_init(void); +void backlight_on(void); +void backlight_off(void); +void backlight_tick(void); + +#endif -- cgit v1.2.3