101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (c) 2017 by Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "led-imx233.h"
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#include "pwm-imx233.h"
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#include "pinctrl-imx233.h"
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/** Target specific tables */
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#if defined(CREATIVE_ZENXFI) || defined(CREATIVE_ZENMOZAIC)
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/* ZEN X-Fi/Mozaic have a Red-Green LED */
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static struct imx233_led_chan_t zenxfi_led_chans[] =
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{
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{ true, LED_RED, 2, 2, 2 }, /* red channel on B20P2 (pwm 2) */
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{ true, LED_GREEN, 2, 4, 4 }, /* green channel on B20P4 (pwm 4) */
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};
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static struct imx233_led_t leds[] = {{2, zenxfi_led_chans}};
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#elif defined(CREATIVE_ZEN)
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/* ZEN has a blue LED */
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static struct imx233_led_chan_t zen_led_chans[] =
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{
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{ true, LED_BLUE, 2, 3, 3 }, /* blue channel on B20P3 (pwm 3) */
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};
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static struct imx233_led_t leds[] = {{1, zen_led_chans}};
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#else
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#define NO_LEDS
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#endif
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#ifndef NO_LEDS
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int imx233_led_get_count(void)
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{
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return sizeof(leds) / sizeof(leds[0]);
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}
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struct imx233_led_t *imx233_led_get_info(void)
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{
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return leds;
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}
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#else
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int imx233_led_get_count(void)
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{
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return 0;
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}
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struct imx233_led_t * imx233_led_get_info(void)
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{
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return NULL;
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}
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#endif
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void imx233_led_init(void)
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{
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struct imx233_led_t *leds = imx233_led_get_info();
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/* turn off all channels */
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for(int led = 0; led < imx233_led_get_count(); led++)
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for(int chan = 0; chan < leds[led].nr_chan; chan++)
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imx233_led_set(led, chan, false);
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}
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void imx233_led_set(int led, int chan, bool on)
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{
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struct imx233_led_chan_t *c = &imx233_led_get_info()[led].chan[chan];
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/* if LED has a PWM, handle it using the PWM */
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if(c->has_pwm)
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{
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/* toogle at 1KHz */
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return imx233_led_set_pwm(led, chan, 1000, on ? 100 : 0);
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}
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/* make sure pin is configured as a GPIO */
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imx233_pinctrl_setup_vpin(
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VPIN_PACK(c->gpio_bank, c->gpio_pin, GPIO), "led",
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PINCTRL_DRIVE_4mA, false);
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imx233_pinctrl_enable_gpio(c->gpio_bank, c->gpio_pin, true);
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imx233_pinctrl_set_gpio(c->gpio_bank, c->gpio_pin, on);
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}
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void imx233_led_set_pwm(int led, int chan, int freq, int duty)
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{
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struct imx233_led_chan_t *c = &imx233_led_get_info()[led].chan[chan];
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if(!c->has_pwm)
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panicf("led %d chan %d cannot do pwm", led, chan);
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imx233_pwm_setup_simple(c->pwm_chan, freq, duty);
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imx233_pwm_enable(c->pwm_chan, true);
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}
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