kconfig: Add dt_chosen_enabled function

Add function that will return 'y' or 'n' if a node pointed to by a chosen property exists and is enabled. Signed-off-by: Kumar Gala <[email protected]>
bseazeng · Nov 5, 2019 · 07e5d89 · 07e5d89
1 parent 9111803
commit 07e5d89
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diff --git a/doc/guides/kconfig/index.rst b/doc/guides/kconfig/index.rst
@@ -852,6 +852,7 @@ value starting with ``0x``.
   dt_node_reg_size_int(kconf, _, path, index=0, unit=None):
   dt_node_reg_size_hex(kconf, _, path, index=0, unit=None):
   dt_compat_enabled(kconf, _, compat):
+  dt_chosen_enabled(kconf, _, chosen):
   dt_node_has_bool_prop(kconf, _, path, prop):
 
 Example Usage

diff --git a/scripts/kconfig/kconfigfunctions.py b/scripts/kconfig/kconfigfunctions.py
@@ -138,6 +138,17 @@ def dt_chosen_label(kconf, _, chosen):
     return node.props["label"].val
 
 
+def dt_chosen_enabled(kconf, _, chosen):
+    """
+    This function returns "y" if /chosen contains a property named 'chosen'
+    that points to an enabled node, and "n" otherwise
+    """
+    if doc_mode or edt is None:
+        return "n"
+
+    node = edt.chosen_node(chosen)
+    return "y" if node and node.enabled else "n"
+
 def _node_reg_addr(node, index, unit):
     if not node:
         return 0
@@ -330,6 +341,7 @@ def dt_compat_enabled(kconf, _, compat):
         "dt_str_val": (dt_str_val, 1, 1),
         "dt_compat_enabled": (dt_compat_enabled, 1, 1),
         "dt_chosen_label": (dt_chosen_label, 1, 1),
+        "dt_chosen_enabled": (dt_chosen_enabled, 1, 1),
         "dt_chosen_reg_addr_int": (dt_chosen_reg, 1, 4),
         "dt_chosen_reg_addr_hex": (dt_chosen_reg, 1, 4),
         "dt_chosen_reg_size_int": (dt_chosen_reg, 1, 4),