diff options
author | Gabe Black <gabeblack@chromium.org> | 2013-09-24 01:40:07 -0700 |
---|---|---|
committer | Martin Roth <martinroth@google.com> | 2016-04-10 18:21:58 +0200 |
commit | edff1655fe4f3dd27645a9acd846576e75e4ad72 (patch) | |
tree | 297d1da111fb9c2611f5ea2098ec8c36a9983717 /src/mainboard/ti | |
parent | eee6a7fa28566e1745319d608fcf4667bae57206 (diff) |
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>
Reviewed-on: https://review.coreboot.org/3943
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/mainboard/ti')
-rw-r--r-- | src/mainboard/ti/beaglebone/Makefile.inc | 1 | ||||
-rw-r--r-- | src/mainboard/ti/beaglebone/leds.c | 44 | ||||
-rw-r--r-- | src/mainboard/ti/beaglebone/leds.h | 29 |
3 files changed, 74 insertions, 0 deletions
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 <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 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__ */ |