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authorRobert Jarzmik <robert.jarzmik@free.fr>2014-01-18 12:48:09 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2014-01-20 16:38:08 +0100
commitb34140af5b7a7e4b30ae9462aa977f4a92316f6d (patch)
tree3e573c4a7c654607f28c63cb61f4b80a190f4542
parent24b22cf0e865860ba2423a019c071346fdbb42f2 (diff)
downloadbarebox-b34140af5b7a7e4b30ae9462aa977f4a92316f6d.tar.gz
barebox-b34140af5b7a7e4b30ae9462aa977f4a92316f6d.tar.xz
ARM: mioa701: poweroff the board on long power press
When the board is on console, a way is added to manually power off the board, on a long power key press (4s). This enables to be able to poweroff the board whatever the state, and is the only manual way (no mechanical possibility). Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--arch/arm/boards/mioa701/Makefile2
-rw-r--r--arch/arm/boards/mioa701/gpio0_poweroff.c81
2 files changed, 82 insertions, 1 deletions
diff --git a/arch/arm/boards/mioa701/Makefile b/arch/arm/boards/mioa701/Makefile
index 01c7a259e9..3072706237 100644
--- a/arch/arm/boards/mioa701/Makefile
+++ b/arch/arm/boards/mioa701/Makefile
@@ -1,2 +1,2 @@
-obj-y += board.o
+obj-y += board.o gpio0_poweroff.o
lwl-y += lowlevel.o
diff --git a/arch/arm/boards/mioa701/gpio0_poweroff.c b/arch/arm/boards/mioa701/gpio0_poweroff.c
new file mode 100644
index 0000000000..2054548aa6
--- /dev/null
+++ b/arch/arm/boards/mioa701/gpio0_poweroff.c
@@ -0,0 +1,81 @@
+/*
+ * (C) 2011 Robert Jarzmik <robert.jarzmik@free.fr>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 <clock.h>
+#include <common.h>
+#include <init.h>
+#include <gpio.h>
+#include <poller.h>
+
+#include "mioa701.h"
+
+#define POWEROFF_SECS (4 * SECOND)
+
+static void blink_led_keyboard(void)
+{
+ gpio_set_value(GPIO115_LED_nKeyboard, 0);
+ mdelay(400);
+ gpio_set_value(GPIO115_LED_nKeyboard, 1);
+ mdelay(400);
+}
+
+static void try_poweroff(void)
+{
+ int poweroff_released = 0;
+
+ blink_led_keyboard();
+ poweroff_released |= !gpio_get_value(GPIO0_KEY_POWER);
+ if (poweroff_released)
+ return;
+
+ gpio_set_value(GPIO115_LED_nKeyboard, 0);
+ mdelay(2000);
+ poweroff();
+}
+
+static void gpio0_poller_fn(struct poller_struct *poller)
+{
+ static uint64_t gpio0_start;
+ static bool gpio0_activated;
+
+ if (!gpio_get_value(GPIO0_KEY_POWER)) {
+ gpio0_activated = false;
+ return;
+ }
+
+ if (gpio0_activated) {
+ if (is_timeout_non_interruptible(gpio0_start, POWEROFF_SECS)) {
+ try_poweroff();
+ gpio0_activated = false;
+ }
+ } else {
+ gpio0_activated = true;
+ gpio0_start = get_time_ns();
+ }
+}
+
+static struct poller_struct gpio0_poller = {
+ .func = gpio0_poller_fn,
+};
+
+static int gpio0_poweroff_probe(void)
+{
+ return poller_register(&gpio0_poller);
+}
+
+device_initcall(gpio0_poweroff_probe);