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authorGabe Black <gabeblack@chromium.org>2013-09-24 01:40:07 -0700
committerMartin Roth <martinroth@google.com>2016-04-10 18:21:58 +0200
commitedff1655fe4f3dd27645a9acd846576e75e4ad72 (patch)
tree297d1da111fb9c2611f5ea2098ec8c36a9983717 /src/mainboard/ti
parenteee6a7fa28566e1745319d608fcf4667bae57206 (diff)
downloadcoreboot-edff1655fe4f3dd27645a9acd846576e75e4ad72.tar.xz
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.inc1
-rw-r--r--src/mainboard/ti/beaglebone/leds.c44
-rw-r--r--src/mainboard/ti/beaglebone/leds.h29
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__ */