From mboxrd@z Thu Jan 1 00:00:00 1970 From: robherring2@gmail.com (Rob Herring) Date: Tue, 3 Dec 2013 12:58:23 -0600 Subject: [PATCH] ARM: highbank: add soft power and reset key event handling Message-ID: <1386097103-26025-1-git-send-email-robherring2@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Rob Herring Power and reset keys come from management processor via ipc messages. Passing them to userspace does not work in a non-desktop environment as acpid is used in that case. So we handle the keys directly. Signed-off-by: Rob Herring --- Olof, Kevin, This is something that has been in some distro kernels for some time and fell thru the cracks to upstream being dependent on pl320 driver. I would like this to be tagged for stable, so it gets picked up by distros where it has been inadvertently dropped. Rob arch/arm/mach-highbank/highbank.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c index b3d7e56..bd3bf66 100644 --- a/arch/arm/mach-highbank/highbank.c +++ b/arch/arm/mach-highbank/highbank.c @@ -17,12 +17,15 @@ #include #include #include +#include #include #include +#include #include #include #include #include +#include #include #include @@ -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) -- 1.8.3.2