Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (152 commits)
  powerpc: Fix hard CPU IDs detection
  powerpc/pmac: Update via-pmu to new syscore_ops
  powerpc/kvm: Fix the build for 32-bit Book 3S (classic) processors
  powerpc/kvm: Fix kvmppc_core_pending_dec
  powerpc: Remove last piece of GEMINI
  powerpc: Fix for Pegasos keyboard and mouse
  powerpc: Make early memory scan more resilient to out of order nodes
  powerpc/pseries/iommu: Cleanup ddw naming
  powerpc/pseries/iommu: Find windows after kexec during boot
  powerpc/pseries/iommu: Remove ddw property when destroying window
  powerpc/pseries/iommu: Add additional checks when changing iommu mask
  powerpc/pseries/iommu: Use correct return type in dupe_ddw_if_already_created
  powerpc: Remove unused/obsolete CONFIG_XICS
  misc: Add CARMA DATA-FPGA Programmer support
  misc: Add CARMA DATA-FPGA Access Driver
  powerpc: Make IRQ_NOREQUEST last to clear, first to set
  powerpc: Integrated Flash controller device tree bindings
  powerpc/85xx: Create dts of each core in CAMP mode for P1020RDB
  powerpc/85xx: Fix PCIe IDSEL for Px020RDB
  powerpc/85xx: P2020 DTS: re-organize dts files
  ...

1 files changed, 36 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/wsp/setup.c b/arch/powerpc/platforms/wsp/setup.c
new file mode 100644
index 000000000000..11ac2f05e01c
--- /dev/null
+++ b/arch/powerpc/platforms/wsp/setup.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2010 Michael Ellerman, IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/of_platform.h>
+
+#include "wsp.h"
+
+/*
+ * Find chip-id by walking up device tree looking for ibm,wsp-chip-id property.
+ * Won't work for nodes that are not a descendant of a wsp node.
+ */
+int wsp_get_chip_id(struct device_node *dn)
+{
+	const u32 *p;
+	int rc;
+
+	/* Start looking at the specified node, not its parent */
+	dn = of_node_get(dn);
+	while (dn && !(p = of_get_property(dn, "ibm,wsp-chip-id", NULL)))
+		dn = of_get_next_parent(dn);
+
+	if (!dn)
+		return -1;
+
+	rc = *p;
+	of_node_put(dn);
+
+	return rc;
+}