Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linux

Pull device tree changes from Grant Likely:
 "All around device tree changes destined for v3.8.  Aside from the
  documentation updates the highlights in this branch include:

   - Kbuild changes for using CPP with .dts files
   - locking fix from preempt_rt patchset
   - include DT alias names in device uevent
   - Selftest bugfixes and improvements
   - New function for counting phandles stanzas in a property
   - constify argument to of_node_full_name()
   - Various bug fixes

  This tree did also contain a commit to use platform_device_add instead
  of open-coding the device add code, but it caused problems with amba
  devices and needed to be reverted."

* tag 'dt-for-linus' of git://git.secretlab.ca/git/linux: (23 commits)
  Revert "of: use platform_device_add"
  kbuild: limit dtc+cpp include path
  gpio: Make of_count_named_gpios() use new of_count_phandle_with_args()
  of: Create function for counting number of phandles in a property
  of/base: Clean up exit paths for of_parse_phandle_with_args()
  of/selftest: Use selftest() macro throughout
  of/selftest: Fix GPIOs selftest to cover the 7th case
  of: fix recursive locking in of_get_next_available_child()
  documentation/devicetree: Fix a typo in exynos-dw-mshc.txt
  OF: convert devtree lock from rw_lock to raw spinlock
  of/exynos_g2d: Add Bindings for exynos G2D driver
  kbuild: create a rule to run the pre-processor on *.dts files
  input: Extend matrix-keypad device tree binding
  devicetree: Move NS2 LEDs binding into LEDs directory
  of: use platform_device_add
  powerpc/5200: Fix size to request_mem_region() call
  documentation/devicetree: Fix typos
  of: add 'const' to of_node_full_name parameter
  of: Output devicetree alias names in uevent
  DT: add vendor prefixes for Renesas and Toshiba
  ...

1 files changed, 14 insertions, 0 deletions

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index bdf42fdf64c9..07125e697d7a 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -156,6 +156,11 @@ cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 
 ld_flags       = $(LDFLAGS) $(ldflags-y)
 
+dtc_cpp_flags  = -Wp,-MD,$(depfile) -nostdinc                            \
+		 -I$(srctree)/arch/$(SRCARCH)/boot/dts                   \
+		 -I$(srctree)/arch/$(SRCARCH)/include/dts                \
+		 -undef -D__DTS__
+
 # Finds the multi-part object the current object will be linked into
 modname-multi = $(sort $(foreach m,$(multi-used),\
 		$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
@@ -269,6 +274,15 @@ cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile
 $(obj)/%.dtb: $(src)/%.dts FORCE
 	$(call if_changed_dep,dtc)
 
+dtc-tmp = $(subst $(comma),_,$(dot-target).dts)
+
+quiet_cmd_dtc_cpp = DTC+CPP $@
+cmd_dtc_cpp = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+	$(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) $(dtc-tmp)
+
+$(obj)/%.dtb: $(src)/%.dtsp FORCE
+	$(call if_changed_dep,dtc_cpp)
+
 # Bzip2
 # ---------------------------------------------------------------------------