path: root/arch/arm/mach-highbank/highbank.c
diff options
authorRob Herring <rob.herring@calxeda.com>2013-12-04 11:05:17 -0600
committerOlof Johansson <olof@lixom.net>2013-12-04 09:28:50 -0800
commit3843114856728075d0a80e7151197c19fb3a9e08 (patch)
tree83cb155afa72b41bbeddf7002d9236f2575a249a /arch/arm/mach-highbank/highbank.c
parentarm: dts: socfpga: Change some clocks of gate-clk type to perip-clk (diff)
ARM: highbank: handle soft poweroff and reset key events
Graceful reboot and poweroff via IPMI commands to the management processor don't work. Power and reset keys are events from the management processor which are generated via IPC messages. Passing the keys to userspace does not work as neither acpid nor a desktop environment are present. This adds a notifier handler for the IPC messages so the kernel can handle the key events directly and IPMI graceful shutdown will work. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: stable@vger.kernel.org Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-highbank/highbank.c')
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
index b3d7e5634b83..bd3bf66ce344 100644
--- a/arch/arm/mach-highbank/highbank.c
+++ b/arch/arm/mach-highbank/highbank.c
@@ -17,12 +17,15 @@
#include <linux/clkdev.h>
#include <linux/clocksource.h>
#include <linux/dma-mapping.h>
+#include <linux/input.h>
#include <linux/io.h>
#include <linux/irqchip.h>
+#include <linux/mailbox.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
+#include <linux/reboot.h>
#include <linux/amba/bus.h>
#include <linux/platform_device.h>
@@ -130,6 +133,24 @@ static struct platform_device highbank_cpuidle_device = {
.name = "cpuidle-calxeda",
+static int hb_keys_notifier(struct notifier_block *nb, unsigned long event, void *data)
+ u32 key = *(u32 *)data;
+ if (event != 0x1000)
+ return 0;
+ if (key == KEY_POWER)
+ orderly_poweroff(false);
+ else if (key == 0xffff)
+ ctrl_alt_del();
+ return 0;
+static struct notifier_block hb_keys_nb = {
+ .notifier_call = hb_keys_notifier,
static void __init highbank_init(void)
struct device_node *np;
@@ -145,6 +166,8 @@ static void __init highbank_init(void)
bus_register_notifier(&platform_bus_type, &highbank_platform_nb);
bus_register_notifier(&amba_bustype, &highbank_amba_nb);
+ pl320_ipc_register_notifier(&hb_keys_nb);
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
if (psci_ops.cpu_suspend)