Merge tag 'tegra-for-3.10-dtc-cpp-chroot-std-headers' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into for-next

Pull DT C pre-processor changes from Stephen Warren:

dt: run C pre-processor on *.dts, create some standard headers

This branch enhances the support for running dtc on device tree files.

A dedicated directory is created for header files that provide constants
for device-tree bindings.

The kbuild dependency script processor is enhanced to support processing
the dependency outputs from multiple separate commands at once.

The kbuild dtc rule is modified so that the C pre-processor is always
applied when compiling any device tree.

Some standard headers are created which define common constants for GPIO,
IRQ, and ARM GIC device tree bindings.

1 files changed, 7 insertions, 10 deletions

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 07125e697d7a..3e73dfd838cd 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -156,9 +156,9 @@ cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 
 ld_flags       = $(LDFLAGS) $(ldflags-y)
 
-dtc_cpp_flags  = -Wp,-MD,$(depfile) -nostdinc                            \
+dtc_cpp_flags  = -Wp,-MD,$(depfile).pre -nostdinc                        \
                  -I$(srctree)/arch/$(SRCARCH)/boot/dts                   \
-                 -I$(srctree)/arch/$(SRCARCH)/include/dts                \
+                 -I$(srctree)/arch/$(SRCARCH)/boot/dts/include           \
                  -undef -D__DTS__
 
 # Finds the multi-part object the current object will be linked into
@@ -269,20 +269,17 @@ $(obj)/%.dtb.S: $(obj)/%.dtb
         $(call cmd,dt_S_dtb)
 
 quiet_cmd_dtc = DTC     $@
-cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile) $<
+cmd_dtc = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+        $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 \
+                -i $(srctree)/arch/$(SRCARCH)/boot/dts $(DTC_FLAGS) \
+                -d $(depfile).dtc $(dtc-tmp) ; \
+        cat $(depfile).pre $(depfile).dtc > $(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)
-
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