of: add dtc annotations functionality to dtx_diff

Add -T and --annotations command line arguments to dtx_diff.  These
arguments will be passed through to dtc.  dtc will then add source
location annotations to its output.

Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/scripts/dtc/dtx_diff b/scripts/dtc/dtx_diff
index 8c4fbad..0d85720 100755 (executable)
--- a/scripts/dtc/dtx_diff
+++ b/scripts/dtc/dtx_diff
@@ -21,6 +21,7 @@ Usage:
         diff DTx_1 and DTx_2
 
 
+      --annotate    synonym for -T
        -f           print full dts in diff (--unified=99999)
        -h           synonym for --help
        -help        synonym for --help
@@ -28,6 +29,7 @@ Usage:
        -s SRCTREE   linux kernel source tree is at path SRCTREE
                         (default is current directory)
        -S           linux kernel source tree is at root of current git repo
+       -T           Annotate output .dts with input source file and line (-T -T for more details)
        -u           unsorted, do not sort DTx
 
 
@@ -174,6 +176,7 @@ compile_to_dts() {
 
 # -----  start of script
 
+annotate=""
 cmd_diff=0
 diff_flags="-u"
 dtx_file_1=""
@@ -208,6 +211,14 @@ while [ $# -gt 0 ] ; do
                shift
                ;;
 
+       -T | --annotate )
+               if [ "${annotate}"  = "" ] ; then
+                       annotate="-T"
+               elif [ "${annotate}"  = "-T" ] ; then
+                       annotate="-T -T"
+               fi
+               shift
+               ;;
        -u )
                dtc_sort=""
                shift
@@ -327,7 +338,7 @@ cpp_flags="\
 DTC="\
        ${DTC}                                     \
        -i ${srctree}/scripts/dtc/include-prefixes \
-       -O dts -qq -f ${dtc_sort} -o -"
+       -O dts -qq -f ${dtc_sort} ${annotate} -o -"
 
 
 # -----  do the diff or decompile