Stefan Reinauer (stefan.reinauer@coreboot.org) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/3943
-gerrit
commit e7a59d4671ca5d9b74069647cb7193e344d7f323 Author: Gabe Black gabeblack@chromium.org Date: Tue Sep 24 01:40:07 2013 -0700
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 gabeblack@chromium.org --- 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(+)
diff --git a/src/mainboard/ti/beaglebone/Makefile.inc b/src/mainboard/ti/beaglebone/Makefile.inc index f6e09a2..6c137d2 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 0000000..405661f --- /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 <assert.h> +#include <console/console.h> +#include <cpu/ti/am335x/gpio.h> +#include <stdlib.h> + +#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 0000000..a4a6001 --- /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__ */