[src/trunk]: src/sys/dev/ofw add of_getprop_bool and of_getprop_uint32 helpers

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c5f84c746fb8
branches:  trunk
changeset: 342327:c5f84c746fb8
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Wed Dec 16 19:33:39 2015 +0000

description:
add of_getprop_bool and of_getprop_uint32 helpers

diffstat:

 sys/dev/ofw/ofw_subr.c |  32 ++++++++++++++++++++++++++++++--
 sys/dev/ofw/openfirm.h |   5 ++++-
 2 files changed, 34 insertions(+), 3 deletions(-)

diffs (67 lines):

diff -r 5407a4925a35 -r c5f84c746fb8 sys/dev/ofw/ofw_subr.c
--- a/sys/dev/ofw/ofw_subr.c    Wed Dec 16 19:33:16 2015 +0000
+++ b/sys/dev/ofw/ofw_subr.c    Wed Dec 16 19:33:39 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ofw_subr.c,v 1.26 2015/12/13 11:51:13 jmcneill Exp $   */
+/*     $NetBSD: ofw_subr.c,v 1.27 2015/12/16 19:33:39 jmcneill Exp $   */
 
 /*
  * Copyright 1998
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ofw_subr.c,v 1.26 2015/12/13 11:51:13 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ofw_subr.c,v 1.27 2015/12/16 19:33:39 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -443,3 +443,31 @@
 
        prop_dictionary_set_bool(props, "i2c-indirect-config", false);
 }
+
+/*
+ * Get the value of a boolean property. If the property is present,
+ * return true. Otherwise, return false.
+ */
+bool
+of_getprop_bool(int node, const char *prop)
+{
+       return OF_getproplen(node, prop) >= 0;
+}
+
+/*
+ * Get the value of a uint32 property, compensating for host byte order.
+ * Returns 0 on success, non-zero on failure.
+ */
+int
+of_getprop_uint32(int node, const char *prop, uint32_t *val)
+{
+       uint32_t v;
+       int len;
+
+       len = OF_getprop(node, prop, &v, sizeof(v));
+       if (len != sizeof(v))
+               return -1;
+
+       *val = be32toh(v);
+       return 0;
+}
diff -r 5407a4925a35 -r c5f84c746fb8 sys/dev/ofw/openfirm.h
--- a/sys/dev/ofw/openfirm.h    Wed Dec 16 19:33:16 2015 +0000
+++ b/sys/dev/ofw/openfirm.h    Wed Dec 16 19:33:39 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: openfirm.h,v 1.32 2015/12/13 11:51:13 jmcneill Exp $   */
+/*     $NetBSD: openfirm.h,v 1.33 2015/12/16 19:33:39 jmcneill Exp $   */
 
 /*
  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@@ -120,4 +120,7 @@
 
 void   of_enter_i2c_devs(prop_dictionary_t, int, size_t, int);
 
+bool   of_getprop_bool(int, const char *);
+int    of_getprop_uint32(int, const char *, uint32_t *);
+
 #endif /*_OPENFIRM_H_*/