mirror of
https://github.com/Rockbox/rockbox.git
synced 2025-12-09 13:15:18 -05:00
70ab3fca0d
* Fix warnings * Add fake battery level information to make sure Rockbox doesn't shutdown * Enable switching between touch modes by pressing (VOL_DOWN|VOL_UP) git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20269 a1c6a512-1295-4272-9138-f99709370657
156 lines
3.3 KiB
C
156 lines
3.3 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2008 by Maurus Cuelenaere
|
|
*
|
|
* 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 "jz4740.h"
|
|
#include "backlight-target.h"
|
|
|
|
/* PWM_CHN7 == GPIO(32*3 + 31) */
|
|
#define BACKLIGHT_GPIO (32*3+31)
|
|
#define BACKLIGHT_PWM 7
|
|
|
|
/* TODO: use HW PWM */
|
|
#define SW_PWM 1
|
|
#if SW_PWM
|
|
|
|
static bool backlight_on;
|
|
static void set_backlight(int val)
|
|
{
|
|
(void)val;
|
|
}
|
|
|
|
bool _backlight_init(void)
|
|
{
|
|
__gpio_as_output(BACKLIGHT_GPIO);
|
|
__gpio_set_pin(BACKLIGHT_GPIO);
|
|
|
|
backlight_on = true;
|
|
|
|
return true;
|
|
}
|
|
|
|
void _backlight_on(void)
|
|
{
|
|
if(!backlight_on)
|
|
__gpio_set_pin(BACKLIGHT_GPIO);
|
|
|
|
backlight_on = true;
|
|
}
|
|
|
|
void _backlight_off(void)
|
|
{
|
|
if(backlight_on)
|
|
__gpio_clear_pin(BACKLIGHT_GPIO);
|
|
|
|
backlight_on = false;
|
|
}
|
|
|
|
#else
|
|
|
|
static int old_val;
|
|
static void set_backlight(int val)
|
|
{
|
|
if(val == old_val)
|
|
return;
|
|
|
|
/* Taken from the OF */
|
|
int tmp;
|
|
tmp = (val/2 + __cpm_get_rtcclk()) / val;
|
|
if(tmp > 0xFFFF)
|
|
tmp = 0xFFFF;
|
|
|
|
__tcu_set_half_data(BACKLIGHT_PWM, (tmp * val * 1374389535) >> 5);
|
|
__tcu_set_full_data(BACKLIGHT_PWM, tmp);
|
|
|
|
old_val = val;
|
|
}
|
|
|
|
static void set_backlight_on(void)
|
|
{
|
|
if(old_val == MAX_BRIGHTNESS_SETTING)
|
|
return;
|
|
|
|
__tcu_start_timer_clock(BACKLIGHT_PWM);
|
|
|
|
set_backlight(MAX_BRIGHTNESS_SETTING);
|
|
|
|
__tcu_set_count(BACKLIGHT_PWM, 0);
|
|
__tcu_start_counter(BACKLIGHT_PWM);
|
|
|
|
__tcu_enable_pwm_output(BACKLIGHT_PWM);
|
|
}
|
|
|
|
static void set_backlight_off(void)
|
|
{
|
|
__tcu_stop_counter(BACKLIGHT_PWM);
|
|
__tcu_disable_pwm_output(BACKLIGHT_PWM);
|
|
__tcu_stop_timer_clock(BACKLIGHT_PWM);
|
|
|
|
old_val = -1;
|
|
}
|
|
|
|
bool _backlight_init(void)
|
|
{
|
|
__gpio_as_pwm(BACKLIGHT_PWM);
|
|
__tcu_start_timer_clock(BACKLIGHT_PWM);
|
|
|
|
__tcu_stop_counter(BACKLIGHT_PWM);
|
|
__tcu_disable_pwm_output(BACKLIGHT_PWM);
|
|
|
|
__tcu_init_pwm_output_low(BACKLIGHT_PWM);
|
|
__tcu_select_rtcclk(BACKLIGHT_PWM);
|
|
__tcu_select_clk_div1(BACKLIGHT_PWM);
|
|
|
|
__tcu_mask_half_match_irq(BACKLIGHT_PWM);
|
|
__tcu_mask_full_match_irq(BACKLIGHT_PWM);
|
|
|
|
old_val = -1;
|
|
|
|
set_backlight_on();
|
|
|
|
return true;
|
|
}
|
|
|
|
void _backlight_on(void)
|
|
{
|
|
set_backlight_on();
|
|
}
|
|
|
|
void _backlight_off(void)
|
|
{
|
|
set_backlight_off();
|
|
}
|
|
#endif /* !SW_PWM */
|
|
|
|
#ifdef HAVE_BACKLIGHT_BRIGHTNESS
|
|
void _backlight_set_brightness(int brightness)
|
|
{
|
|
set_backlight(brightness);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_LCD_SLEEP
|
|
/* Turn off LED supply */
|
|
void _backlight_lcd_sleep(void)
|
|
{
|
|
set_backlight_off();
|
|
}
|
|
#endif
|