From edff1655fe4f3dd27645a9acd846576e75e4ad72 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Tue, 24 Sep 2013 01:40:07 -0700 Subject: [PATCH] beaglebone: Add code to set the value of the LEDs The LEDs on the beaglebone are connected to GPIOs called USR0-USR3. This change adds some functions to make it easy to set their value and clear what the calling code is trying to do. Change-Id: I0bb83bbc2e195ce1a0104afcd120089efaa22916 Signed-off-by: Gabe Black Reviewed-on: https://review.coreboot.org/3943 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/mainboard/ti/beaglebone/Makefile.inc | 1 + src/mainboard/ti/beaglebone/leds.c | 44 ++++++++++++++++++++++++ src/mainboard/ti/beaglebone/leds.h | 29 ++++++++++++++++ 3 files changed, 74 insertions(+) create mode 100644 src/mainboard/ti/beaglebone/leds.c create mode 100644 src/mainboard/ti/beaglebone/leds.h diff --git a/src/mainboard/ti/beaglebone/Makefile.inc b/src/mainboard/ti/beaglebone/Makefile.inc index f6e09a2941..6c137d295d 100644 --- a/src/mainboard/ti/beaglebone/Makefile.inc +++ b/src/mainboard/ti/beaglebone/Makefile.inc @@ -14,6 +14,7 @@ ## bootblock-y += bootblock.c +bootblock-y += leds.c romstage-y += romstage.c #ramstage-y += ramstage.c diff --git a/src/mainboard/ti/beaglebone/leds.c b/src/mainboard/ti/beaglebone/leds.c new file mode 100644 index 0000000000..405661f153 --- /dev/null +++ b/src/mainboard/ti/beaglebone/leds.c @@ -0,0 +1,44 @@ +/* + * Copyright 2013 Google Inc. + * + * 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 program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include + +#include "leds.h" + +static const int led_gpios[BEAGLEBONE_LED_COUNT] = { + [BEAGLEBONE_LED_USR0] = AM335X_GPIO_BITS_PER_BANK + 21, + [BEAGLEBONE_LED_USR1] = AM335X_GPIO_BITS_PER_BANK + 22, + [BEAGLEBONE_LED_USR2] = AM335X_GPIO_BITS_PER_BANK + 23, + [BEAGLEBONE_LED_USR3] = AM335X_GPIO_BITS_PER_BANK + 24 +}; + +void beaglebone_leds_init(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(led_gpios); i++) + gpio_direction_output(led_gpios[i], 0); +} + +void beaglebone_leds_set(enum beaglebone_led led, int on) +{ + int res; + + ASSERT(led < ARRAY_SIZE(led_gpios) && led_gpios[led]); + res = gpio_set_value(led_gpios[led], on); + ASSERT(res != -1); +} diff --git a/src/mainboard/ti/beaglebone/leds.h b/src/mainboard/ti/beaglebone/leds.h new file mode 100644 index 0000000000..a4a6001f40 --- /dev/null +++ b/src/mainboard/ti/beaglebone/leds.h @@ -0,0 +1,29 @@ +/* + * Copyright 2013 Google Inc. + * + * 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 program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __MAINBOARD_TI_BEAGLEBONE_LEDS_H__ +#define __MAINBOARD_TI_BEAGLEBONE_LEDS_H__ + +enum beaglebone_led { + BEAGLEBONE_LED_USR0, + BEAGLEBONE_LED_USR1, + BEAGLEBONE_LED_USR2, + BEAGLEBONE_LED_USR3, + BEAGLEBONE_LED_COUNT +}; + +void beaglebone_leds_init(void); +void beaglebone_leds_set(enum beaglebone_led led, int on); + +#endif /* __MAINBOARD_TI_BEAGLEBONE_LEDS_H__ */