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Diffstat (limited to 'firmware/target/arm/imx233/led-imx233.c')
-rw-r--r--firmware/target/arm/imx233/led-imx233.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/led-imx233.c b/firmware/target/arm/imx233/led-imx233.c
new file mode 100644
index 0000000000..88c2b7e054
--- /dev/null
+++ b/firmware/target/arm/imx233/led-imx233.c
@@ -0,0 +1,100 @@
+/***************************************************************************
+ * __________ __ ___.
+ * 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);
+}