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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (c) 2017 by Amaury Pouly
*
* 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 "led-imx233.h"
#include "pwm-imx233.h"
#include "pinctrl-imx233.h"
/** Target specific tables */
#if defined(CREATIVE_ZENXFI) || defined(CREATIVE_ZENMOZAIC)
/* ZEN X-Fi/Mozaic have a Red-Green LED */
static struct imx233_led_chan_t zenxfi_led_chans[] =
{
{ true, LED_RED, 2, 2, 2 }, /* red channel on B20P2 (pwm 2) */
{ true, LED_GREEN, 2, 4, 4 }, /* green channel on B20P4 (pwm 4) */
};
static struct imx233_led_t leds[] = {{2, zenxfi_led_chans}};
#elif defined(CREATIVE_ZEN)
/* ZEN has a blue LED */
static struct imx233_led_chan_t zen_led_chans[] =
{
{ true, LED_BLUE, 2, 3, 3 }, /* blue channel on B20P3 (pwm 3) */
};
static struct imx233_led_t leds[] = {{1, zen_led_chans}};
#else
#define NO_LEDS
#endif
#ifndef NO_LEDS
int imx233_led_get_count(void)
{
return sizeof(leds) / sizeof(leds[0]);
}
struct imx233_led_t *imx233_led_get_info(void)
{
return leds;
}
#else
int imx233_led_get_count(void)
{
return 0;
}
struct imx233_led_t * imx233_led_get_info(void)
{
return NULL;
}
#endif
void imx233_led_init(void)
{
struct imx233_led_t *leds = imx233_led_get_info();
/* turn off all channels */
for(int led = 0; led < imx233_led_get_count(); led++)
for(int chan = 0; chan < leds[led].nr_chan; chan++)
imx233_led_set(led, chan, false);
}
void imx233_led_set(int led, int chan, bool on)
{
struct imx233_led_chan_t *c = &imx233_led_get_info()[led].chan[chan];
/* if LED has a PWM, handle it using the PWM */
if(c->has_pwm)
{
/* toogle at 1KHz */
return imx233_led_set_pwm(led, chan, 1000, on ? 100 : 0);
}
/* make sure pin is configured as a GPIO */
imx233_pinctrl_setup_vpin(
VPIN_PACK(c->gpio_bank, c->gpio_pin, GPIO), "led",
PINCTRL_DRIVE_4mA, false);
imx233_pinctrl_enable_gpio(c->gpio_bank, c->gpio_pin, true);
imx233_pinctrl_set_gpio(c->gpio_bank, c->gpio_pin, on);
}
void imx233_led_set_pwm(int led, int chan, int freq, int duty)
{
struct imx233_led_chan_t *c = &imx233_led_get_info()[led].chan[chan];
if(!c->has_pwm)
panicf("led %d chan %d cannot do pwm", led, chan);
imx233_pwm_setup_simple(c->pwm_chan, freq, duty);
imx233_pwm_enable(c->pwm_chan, true);
}
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