lib, fdt: Adding fdtdec_get_uint function

Adding fdtdec_get_uint function which is the unsigned version for fdtdec_get_int Signed-off-by: Chin Liang See <clsee@altera.com> Cc: Dinh Nguyen <dinguyen@opensource.altera.com> Cc: Dinh Nguyen <dinh.linux@gmail.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefan Roese <sr@denx.de> Cc: Vikas Manocha <vikas.manocha@st.com> Cc: Jagannadh Teki <jteki@openedev.com> Cc: Pavel Machek <pavel@denx.de> Cc: Heiko Schocher <hs@denx.de>

lib, fdt: Adding fdtdec_get_uint function
Adding fdtdec_get_uint function which is the unsigned version for fdtdec_get_int Signed-off-by: Chin Liang See <clsee@altera.com> Cc: Dinh Nguyen <dinguyen@opensource.altera.com> Cc: Dinh Nguyen <dinh.linux@gmail.com> Cc: Marek Vasut <marex@denx.de> Cc: Stefan Roese <sr@denx.de> Cc: Vikas Manocha <vikas.manocha@st.com> Cc: Jagannadh Teki <jteki@openedev.com> Cc: Pavel Machek <pavel@denx.de> Cc: Heiko Schocher <hs@denx.de>
Chin Liang See · Marek Vasut
1 parent c624d07f3f
Showing 2 changed files with 31 additions and 0 deletions Side-by-side Diff
include/fdtdec.h
lib/fdtdec_common.c
@@ -490,6 +490,19 @@
 		s32 default_val);
  
 /**
+ * Unsigned version of fdtdec_get_int. The property must have at least
+ * 4 bytes of data. The value of the first cell is returned.
+ *
+ * @param blob	FDT blob
+ * @param node	node to examine
+ * @param prop_name	name of property to find
+ * @param default_val	default value to return if the property is not found
+ * @return unsigned integer value, if found, or default_val if not
+ */
+unsigned int fdtdec_get_uint(const void *blob, int node, const char *prop_name,
+			unsigned int default_val);
+
+/**
  * Get a variable-sized number from a property
  *
  * This reads a number from one or more cells.
@@ -36,4 +36,22 @@
 	debug("(not found)\n");
 	return default_val;
 }
+
+unsigned int fdtdec_get_uint(const void *blob, int node, const char *prop_name,
+			unsigned int default_val)
+{
+	const int *cell;
+	int len;
+
+	debug("%s: %s: ", __func__, prop_name);
+	cell = fdt_getprop(blob, node, prop_name, &len);
+	if (cell && len >= sizeof(unsigned int)) {
+		unsigned int val = fdt32_to_cpu(cell[0]);
+
+		debug("%#x (%d)\n", val, val);
+		return val;
+	}
+	debug("(not found)\n");
+	return default_val;
+}
...	...	@@ -490,6 +490,19 @@
490	490	s32 default_val);
491	491
492	492	/**
	493	+ * Unsigned version of fdtdec_get_int. The property must have at least
	494	+ * 4 bytes of data. The value of the first cell is returned.
	495	+ *
	496	+ * @param blob FDT blob
	497	+ * @param node node to examine
	498	+ * @param prop_name name of property to find
	499	+ * @param default_val default value to return if the property is not found
	500	+ * @return unsigned integer value, if found, or default_val if not
	501	+ */
	502	+unsigned int fdtdec_get_uint(const void blob, int node, const char prop_name,
	503	+ unsigned int default_val);
	504	+
	505	+/**
493	506	* Get a variable-sized number from a property
494	507	*
495	508	* This reads a number from one or more cells.
...	...	@@ -36,4 +36,22 @@
36	36	debug("(not found)\n");
37	37	return default_val;
38	38	}
	39	+
	40	+unsigned int fdtdec_get_uint(const void blob, int node, const char prop_name,
	41	+ unsigned int default_val)
	42	+{
	43	+ const int *cell;
	44	+ int len;
	45	+
	46	+ debug("%s: %s: ", __func__, prop_name);
	47	+ cell = fdt_getprop(blob, node, prop_name, &len);
	48	+ if (cell && len >= sizeof(unsigned int)) {
	49	+ unsigned int val = fdt32_to_cpu(cell[0]);
	50	+
	51	+ debug("%#x (%d)\n", val, val);
	52	+ return val;
	53	+ }
	54	+ debug("(not found)\n");
	55	+ return default_val;
	56	+}