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Diffstat (limited to 'arch/powerpc/platforms/52xx/lite5200.c')
-rw-r--r--arch/powerpc/platforms/52xx/lite5200.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/52xx/lite5200.c b/arch/powerpc/platforms/52xx/lite5200.c
index 8e2646ac417..1cfc00dfb99 100644
--- a/arch/powerpc/platforms/52xx/lite5200.c
+++ b/arch/powerpc/platforms/52xx/lite5200.c
@@ -85,6 +85,28 @@ error:
iounmap(gpio);
}
+#ifdef CONFIG_PM
+static u32 descr_a;
+static void lite5200_suspend_prepare(void __iomem *mbar)
+{
+ u8 pin = 1; /* GPIO_WKUP_1 (GPIO_PSC2_4) */
+ u8 level = 0; /* wakeup on low level */
+ mpc52xx_set_wakeup_gpio(pin, level);
+
+ /*
+ * power down usb port
+ * this needs to be called before of-ohci suspend code
+ */
+ descr_a = in_be32(mbar + 0x1048);
+ out_be32(mbar + 0x1048, (descr_a & ~0x200) | 0x100);
+}
+
+static void lite5200_resume_finish(void __iomem *mbar)
+{
+ out_be32(mbar + 0x1048, descr_a);
+}
+#endif
+
static void __init lite5200_setup_arch(void)
{
struct device_node *np;
@@ -107,6 +129,12 @@ static void __init lite5200_setup_arch(void)
mpc52xx_setup_cpu(); /* Generic */
lite5200_setup_cpu(); /* Platorm specific */
+#ifdef CONFIG_PM
+ mpc52xx_suspend.board_suspend_prepare = lite5200_suspend_prepare;
+ mpc52xx_suspend.board_resume_finish = lite5200_resume_finish;
+ mpc52xx_pm_init();
+#endif
+
#ifdef CONFIG_PCI
np = of_find_node_by_type(NULL, "pci");
if (np) {