]>
git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/media/v4l2-clk.h
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/export.h>
19 #include <linux/list.h>
20 #include <linux/mutex.h>
27 struct list_head list
;
28 const struct v4l2_clk_ops
*ops
;
31 struct mutex lock
; /* Protect the enable count */
39 int (*enable
)(struct v4l2_clk
*clk
);
40 void (*disable
)(struct v4l2_clk
*clk
);
41 unsigned long (*get_rate
)(struct v4l2_clk
*clk
);
42 int (*set_rate
)(struct v4l2_clk
*clk
, unsigned long);
45 struct v4l2_clk
*v4l2_clk_register(const struct v4l2_clk_ops
*ops
,
48 void v4l2_clk_unregister(struct v4l2_clk
*clk
);
49 struct v4l2_clk
*v4l2_clk_get(struct device
*dev
, const char *id
);
50 void v4l2_clk_put(struct v4l2_clk
*clk
);
51 int v4l2_clk_enable(struct v4l2_clk
*clk
);
52 void v4l2_clk_disable(struct v4l2_clk
*clk
);
53 unsigned long v4l2_clk_get_rate(struct v4l2_clk
*clk
);
54 int v4l2_clk_set_rate(struct v4l2_clk
*clk
, unsigned long rate
);
58 struct v4l2_clk
*__v4l2_clk_register_fixed(const char *dev_id
,
59 unsigned long rate
, struct module
*owner
);
60 void v4l2_clk_unregister_fixed(struct v4l2_clk
*clk
);
62 static inline struct v4l2_clk
*v4l2_clk_register_fixed(const char *dev_id
,
65 return __v4l2_clk_register_fixed(dev_id
, rate
, THIS_MODULE
);
68 #define V4L2_CLK_NAME_SIZE 64
70 #define v4l2_clk_name_i2c(name, size, adap, client) snprintf(name, size, \
71 "%d-%04x", adap, client)
73 #define v4l2_clk_name_of(name, size, of_full_name) snprintf(name, size, \
74 "of-%s", of_full_name)