powerpc/qe: Implement qe_alive_during_sleep() helper function

[deliverable/linux.git] / arch / powerpc / sysdev / qe_lib / qe.c

diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c
index 237e3654f48ca6b1059c7d2017ccd31544b215e2..464271bea6c95852e9640d7c6c573269259d2333 100644 (file)
--- a/arch/powerpc/sysdev/qe_lib/qe.c
+++ b/arch/powerpc/sysdev/qe_lib/qe.c
@@ -65,6 +65,19 @@ static unsigned int qe_num_of_snum;
 
 static phys_addr_t qebase = -1;
 
+int qe_alive_during_sleep(void)
+{
+       static int ret = -1;
+
+       if (ret != -1)
+               return ret;
+
+       ret = !of_find_compatible_node(NULL, NULL, "fsl,mpc8569-pmc");
+
+       return ret;
+}
+EXPORT_SYMBOL(qe_alive_during_sleep);
+
 phys_addr_t get_qe_base(void)
 {
        struct device_node *qe;