powerpc/qe: update risc allocation for QE

[pandora-kernel.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 01bce37..2533677 100644 (file)
--- a/arch/powerpc/sysdev/qe_lib/qe.c
+++ b/arch/powerpc/sysdev/qe_lib/qe.c
@@ -575,3 +575,31 @@ struct qe_firmware_info *qe_get_firmware_info(void)
 }
 EXPORT_SYMBOL(qe_get_firmware_info);
 
+unsigned int qe_get_num_of_risc(void)
+{
+       struct device_node *qe;
+       int size;
+       unsigned int num_of_risc = 0;
+       const u32 *prop;
+
+       qe = of_find_compatible_node(NULL, NULL, "fsl,qe");
+       if (!qe) {
+               /* Older devices trees did not have an "fsl,qe"
+                * compatible property, so we need to look for
+                * the QE node by name.
+                */
+               qe = of_find_node_by_type(NULL, "qe");
+               if (!qe)
+                       return num_of_risc;
+       }
+
+       prop = of_get_property(qe, "fsl,qe-num-riscs", &size);
+       if (prop && size == sizeof(*prop))
+               num_of_risc = *prop;
+
+       of_node_put(qe);
+
+       return num_of_risc;
+}
+EXPORT_SYMBOL(qe_get_num_of_risc);
+