X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Freset.h;h=cde2c4b4a8c1a458ab43350f6e8ab18614949648;hb=f9a48654ee70fbad29f487d074fd36a1548b4209;hp=57bbc0b49de09f48bf2070c6ce35c9da7cc8738d;hpb=ea9dc35aab9fd9e87cbb73a3a63fcbea4d6378c3;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/reset.h b/include/reset.h
index 57bbc0b..cde2c4b 100644
--- a/include/reset.h
+++ b/include/reset.h
@@ -7,7 +7,7 @@
 #define _RESET_H
 
 #include <dm/ofnode.h>
-#include <linux/errno.h>
+#include <linux/err.h>
 
 /**
  * A reset is a hardware signal indicating that a HW module (or IP block, or
@@ -44,6 +44,8 @@ struct udevice;
  * @data: An optional data field for scenarios where a single integer ID is not
  *	  sufficient. If used, it can be populated through an .of_xlate op and
  *	  processed during the various reset ops.
+ * @polarity: An optional polarity field for drivers that support
+ *	  different reset polarities.
  *
  * Should additional information to identify and configure any reset signal
  * for any provider be required in the future, the struct could be expanded to
@@ -60,6 +62,7 @@ struct reset_ctl {
 	 */
 	unsigned long id;
 	unsigned long data;
+	unsigned long polarity;
 };
 
 /**
@@ -81,6 +84,98 @@ struct reset_ctl_bulk {
 };
 
 #if CONFIG_IS_ENABLED(DM_RESET)
+
+/**
+ * devm_reset_control_get - resource managed reset_get_by_name()
+ * @dev: device to be reset by the controller
+ * @id: reset line name
+ *
+ * Managed reset_get_by_name(). For reset controllers returned
+ * from this function, reset_free() is called automatically on driver
+ * detach.
+ *
+ * Returns a struct reset_ctl or IS_ERR() condition containing errno.
+ */
+struct reset_ctl *devm_reset_control_get(struct udevice *dev, const char *id);
+
+/**
+ * devm_reset_control_get_optional - resource managed reset_get_by_name() that
+ *                                   can fail
+ * @dev:	The client device.
+ * @id:		reset line name
+ *
+ * Managed reset_get_by_name(). For reset controllers returned
+ * from this function, reset_free() is called automatically on driver
+ * detach.
+ *
+ * Returns a struct reset_ctl or a dummy reset controller if it failed.
+ */
+struct reset_ctl *devm_reset_control_get_optional(struct udevice *dev,
+						  const char *id);
+
+/**
+ * devm_reset_control_get - resource managed reset_get_by_index()
+ * @dev:	The client device.
+ * @index:	The index of the reset signal to request, within the client's
+ *		list of reset signals.
+ *
+ * Managed reset_get_by_index(). For reset controllers returned
+ * from this function, reset_free() is called automatically on driver
+ * detach.
+ *
+ * Returns a struct reset_ctl or IS_ERR() condition containing errno.
+ */
+struct reset_ctl *devm_reset_control_get_by_index(struct udevice *dev,
+						  int index);
+
+/**
+ * devm_reset_bulk_get - resource managed reset_get_bulk()
+ * @dev: device to be reset by the controller
+ *
+ * Managed reset_get_bulk(). For reset controllers returned
+ * from this function, reset_free() is called automatically on driver
+ * detach.
+ *
+ * Returns a struct reset_ctl or IS_ERR() condition containing errno.
+ */
+struct reset_ctl_bulk *devm_reset_bulk_get(struct udevice *dev);
+
+/**
+ * devm_reset_bulk_get_optional - resource managed reset_get_bulk() that
+ *                                can fail
+ * @dev:	The client device.
+ *
+ * Managed reset_get_bulk(). For reset controllers returned
+ * from this function, reset_free() is called automatically on driver
+ * detach.
+ *
+ * Returns a struct reset_ctl or NULL if it failed.
+ */
+struct reset_ctl_bulk *devm_reset_bulk_get_optional(struct udevice *dev);
+
+/**
+ * devm_reset_bulk_get_by_node - resource managed reset_get_bulk()
+ * @dev: device to be reset by the controller
+ * @node: ofnode where the "resets" property is. Usually a sub-node of
+ *        the dev's node.
+ *
+ * see devm_reset_bulk_get()
+ */
+struct reset_ctl_bulk *devm_reset_bulk_get_by_node(struct udevice *dev,
+						   ofnode node);
+
+/**
+ * devm_reset_bulk_get_optional_by_node - resource managed reset_get_bulk()
+ *                                        that can fail
+ * @dev: device to be reset by the controller
+ * @node: ofnode where the "resets" property is. Usually a sub-node of
+ *        the dev's node.
+ *
+ * see devm_reset_bulk_get_optional()
+ */
+struct reset_ctl_bulk *devm_reset_bulk_get_optional_by_node(struct udevice *dev,
+							    ofnode node);
+
 /**
  * reset_get_by_index - Get/request a reset signal by integer index.
  *
@@ -262,7 +357,48 @@ static inline int reset_release_bulk(struct reset_ctl_bulk *bulk)
 {
 	return reset_release_all(bulk->resets, bulk->count);
 }
+
 #else
+static inline struct reset_ctl *devm_reset_control_get(struct udevice *dev,
+						       const char *id)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline struct reset_ctl *devm_reset_control_get_optional(struct udevice *dev,
+								const char *id)
+{
+	return NULL;
+}
+
+static inline struct reset_ctl *devm_reset_control_get_by_index(struct udevice *dev,
+								int index)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline struct reset_ctl_bulk *devm_reset_bulk_get(struct udevice *dev)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline struct reset_ctl_bulk *devm_reset_bulk_get_optional(struct udevice *dev)
+{
+	return NULL;
+}
+
+static inline struct reset_ctl_bulk *devm_reset_bulk_get_by_node(struct udevice *dev,
+								 ofnode node)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline struct reset_ctl_bulk *devm_reset_bulk_get_optional_by_node(struct udevice *dev,
+									  ofnode node)
+{
+	return NULL;
+}
+
 static inline int reset_get_by_index(struct udevice *dev, int index,
 				     struct reset_ctl *reset_ctl)
 {