From 60592165ca998875e4bc46c4396c5a123a7e9dbb Mon Sep 17 00:00:00 2001 From: Lorenzo Miori Date: Sat, 23 Feb 2013 16:59:49 +0100 Subject: Samsung YP-R0 hosted target code refactoring As per title this patch aims at splitting common target code and specific target code in a better way to support future ports within the same environment (e.g. Samsung YP-R1 where the Linux and the SoC are the same, with differences in hardware devices handling) Change-Id: I67b4918c46403b184d3d8f42ab5aae7d01037fd0 Reviewed-on: http://gerrit.rockbox.org/409 Reviewed-by: Thomas Martitz Tested-by: Thomas Martitz --- .../target/hosted/samsungypr/ypr0/backlight-ypr0.c | 88 ++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 firmware/target/hosted/samsungypr/ypr0/backlight-ypr0.c (limited to 'firmware/target/hosted/samsungypr/ypr0/backlight-ypr0.c') diff --git a/firmware/target/hosted/samsungypr/ypr0/backlight-ypr0.c b/firmware/target/hosted/samsungypr/ypr0/backlight-ypr0.c new file mode 100644 index 0000000000..551b386f19 --- /dev/null +++ b/firmware/target/hosted/samsungypr/ypr0/backlight-ypr0.c @@ -0,0 +1,88 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * + * Copyright (C) 2011 by Lorenzo Miori + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#include "config.h" +#include "system.h" +#include "backlight.h" +#include "backlight-target.h" +#include "lcd.h" +#include "as3514.h" +#include "ascodec.h" +#include +#include "unistd.h" + +static bool backlight_on_status = true; /* Is on or off? */ + +/*TODO: see if LCD sleep could be implemented in a better way -> ie using a rockbox feature */ +/* Turn off LCD power supply */ +static void _backlight_lcd_sleep(void) +{ + int fp = open("/sys/class/graphics/fb0/blank", O_RDWR); + write(fp, "1", 1); + close(fp); +} +/* Turn on LCD screen */ +static void _backlight_lcd_power(void) +{ + int fp = open("/sys/class/graphics/fb0/blank", O_RDWR); + write(fp, "0", 1); + close(fp); +} + +bool _backlight_init(void) +{ + /* We have nothing to do */ + return true; +} + +void _backlight_on(void) +{ + if (!backlight_on_status) + { + /* Turn on lcd power before backlight */ + _backlight_lcd_power(); + /* Original app sets this to 0xb1 when backlight is on... */ + ascodec_write_pmu(AS3543_BACKLIGHT, 0x1, 0xb1); + } + + backlight_on_status = true; + +} + +void _backlight_off(void) +{ + if (backlight_on_status) { + /* Disabling the DCDC15 completely, keeps brightness register value */ + ascodec_write_pmu(AS3543_BACKLIGHT, 0x1, 0x00); + /* Turn off lcd power then */ + _backlight_lcd_sleep(); + } + + backlight_on_status = false; +} + +void _backlight_set_brightness(int brightness) +{ + /* Just another check... */ + if (brightness > MAX_BRIGHTNESS_SETTING) + brightness = MAX_BRIGHTNESS_SETTING; + if (brightness < MIN_BRIGHTNESS_SETTING) + brightness = MIN_BRIGHTNESS_SETTING; + ascodec_write_pmu(AS3543_BACKLIGHT, 0x3, brightness << 3 & 0xf8); +} -- cgit v1.2.3