From: Gabe Black <gabeblack@chromium.org>
Date: Thu, 25 Oct 2012 16:31:04 +0000 (+0000)
Subject: fdt: Add function to read boolean property
X-Git-Tag: v2013.01-rc2~118^2^2~8
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=79289c0b5ff4a8c7869d7ca629cddc660dd06095;p=oweals%2Fu-boot.git

fdt: Add function to read boolean property

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Commit-Ready: Gabe Black <gabeblack@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
---

diff --git a/include/fdtdec.h b/include/fdtdec.h
index f8a4e94186..a37cf54a93 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -398,6 +398,16 @@ int fdtdec_setup_gpio(struct fdt_gpio_state *gpio);
 int fdtdec_get_config_int(const void *blob, const char *prop_name,
 		int default_val);
 
+/**
+ * Look in the FDT for a config item with the given name
+ * and return whether it exists.
+ *
+ * @param blob		FDT blob
+ * @param prop_name	property name to look up
+ * @return 1, if it exists, or 0 if not
+ */
+int fdtdec_get_config_bool(const void *blob, const char *prop_name);
+
 /**
  * Look in the FDT for a config item with the given name and return its value
  * as a string.
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 96f3e7bccf..da12df209c 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -524,6 +524,20 @@ int fdtdec_get_config_int(const void *blob, const char *prop_name,
 	return fdtdec_get_int(blob, config_node, prop_name, default_val);
 }
 
+int fdtdec_get_config_bool(const void *blob, const char *prop_name)
+{
+	int config_node;
+	const void *prop;
+
+	debug("%s: %s\n", __func__, prop_name);
+	config_node = fdt_path_offset(blob, "/config");
+	if (config_node < 0)
+		return 0;
+	prop = fdt_get_property(blob, config_node, prop_name, NULL);
+
+	return prop != NULL;
+}
+
 char *fdtdec_get_config_string(const void *blob, const char *prop_name)
 {
 	const char *nodep;