aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-ux500
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-ux500')
-rwxr-xr-xarch/arm/mach-ux500/pm.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/pm.c b/arch/arm/mach-ux500/pm.c
index 509c2c59c02..96f040a8eda 100755
--- a/arch/arm/mach-ux500/pm.c
+++ b/arch/arm/mach-ux500/pm.c
@@ -32,6 +32,29 @@ static int u8500_pm_prepare(void)
return 0;
}
+/* poweroff support */
+#include <linux/signal.h>
+#include <mach/ab8500.h>
+/*
+ * This function is used from pm.h to shut down the u8500 system by
+ * turning off the ab8500
+ */
+void u8500_pm_poweroff(void)
+{
+ sigset_t old, all;
+ int val;
+
+ sigfillset(&all);
+ if (!sigprocmask(SIG_BLOCK, &all, &old)) {
+ val = ab8500_read(AB8500_SYS_CTRL1_BLOCK, AB8500_CTRL1_REG);
+ val |= 0x1;
+ ab8500_write(AB8500_SYS_CTRL1_BLOCK, AB8500_CTRL1_REG, val);
+ (void) sigprocmask(SIG_SETMASK, &old, NULL);
+ }
+ return;
+}
+
+
/* GPIO context */
static struct ux500_gpio_regs gpio_context[UX500_NR_GPIO_BANKS];
@@ -827,6 +850,9 @@ static int __init u8500_pm_init(void)
return -ENOMEM;
}
+ /* register the global power off hook */
+ pm_power_off = u8500_pm_poweroff;
+
suspend_set_ops(&u8500_pm_ops);
return 0;