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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2013-07-02 09:01:31 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2013-07-02 09:01:31 -0700
commit27eb2c4b3d3e13f376a359e293c212a2e9407af5 (patch)
tree556aa7b5cd6eeb4214dec129c789515157187010 /include/linux/reset-controller.h
parent5705b8aca5a80141de5637ff0e23b31b26f2c5bf (diff)
parent67bf12ca50d524f9e225347fe63533562e2004de (diff)
Merge branch 'next' into for-linus
Prepare first set of updates for 3.11 merge window.
Diffstat (limited to 'include/linux/reset-controller.h')
-rw-r--r--include/linux/reset-controller.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/include/linux/reset-controller.h b/include/linux/reset-controller.h
new file mode 100644
index 000000000000..2f61311ae3e0
--- /dev/null
+++ b/include/linux/reset-controller.h
@@ -0,0 +1,51 @@
+#ifndef _LINUX_RESET_CONTROLLER_H_
+#define _LINUX_RESET_CONTROLLER_H_
+
+#include <linux/list.h>
+
+struct reset_controller_dev;
+
+/**
+ * struct reset_control_ops
+ *
+ * @reset: for self-deasserting resets, does all necessary
+ * things to reset the device
+ * @assert: manually assert the reset line, if supported
+ * @deassert: manually deassert the reset line, if supported
+ */
+struct reset_control_ops {
+ int (*reset)(struct reset_controller_dev *rcdev, unsigned long id);
+ int (*assert)(struct reset_controller_dev *rcdev, unsigned long id);
+ int (*deassert)(struct reset_controller_dev *rcdev, unsigned long id);
+};
+
+struct module;
+struct device_node;
+
+/**
+ * struct reset_controller_dev - reset controller entity that might
+ * provide multiple reset controls
+ * @ops: a pointer to device specific struct reset_control_ops
+ * @owner: kernel module of the reset controller driver
+ * @list: internal list of reset controller devices
+ * @of_node: corresponding device tree node as phandle target
+ * @of_reset_n_cells: number of cells in reset line specifiers
+ * @of_xlate: translation function to translate from specifier as found in the
+ * device tree to id as given to the reset control ops
+ * @nr_resets: number of reset controls in this reset controller device
+ */
+struct reset_controller_dev {
+ struct reset_control_ops *ops;
+ struct module *owner;
+ struct list_head list;
+ struct device_node *of_node;
+ int of_reset_n_cells;
+ int (*of_xlate)(struct reset_controller_dev *rcdev,
+ const struct of_phandle_args *reset_spec);
+ unsigned int nr_resets;
+};
+
+int reset_controller_register(struct reset_controller_dev *rcdev);
+void reset_controller_unregister(struct reset_controller_dev *rcdev);
+
+#endif