4 * Copyright (C) 2012-2013, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * ATTENTION: This is a temporary API and it shall be replaced by the generic
11 * clock API, when the latter becomes widely available.
14 #ifndef MEDIA_V4L2_CLK_H
15 #define MEDIA_V4L2_CLK_H
17 #include <linux/atomic.h>
18 #include <linux/list.h>
19 #include <linux/mutex.h>
25 struct list_head list;
26 const struct v4l2_clk_ops *ops;
30 struct mutex lock; /* Protect the enable count */
37 int (*enable)(struct v4l2_clk *clk);
38 void (*disable)(struct v4l2_clk *clk);
39 unsigned long (*get_rate)(struct v4l2_clk *clk);
40 int (*set_rate)(struct v4l2_clk *clk, unsigned long);
43 struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops,
45 const char *name, void *priv);
46 void v4l2_clk_unregister(struct v4l2_clk *clk);
47 struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id);
48 void v4l2_clk_put(struct v4l2_clk *clk);
49 int v4l2_clk_enable(struct v4l2_clk *clk);
50 void v4l2_clk_disable(struct v4l2_clk *clk);
51 unsigned long v4l2_clk_get_rate(struct v4l2_clk *clk);
52 int v4l2_clk_set_rate(struct v4l2_clk *clk, unsigned long rate);