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1 /*
2  * TI OMAP4 ISS V4L2 Driver - ISP IPIPE module
3  *
4  * Copyright (C) 2012 Texas Instruments, Inc.
5  *
6  * Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  */
13 
14 #ifndef OMAP4_ISS_IPIPE_H
15 #define OMAP4_ISS_IPIPE_H
16 
17 #include "iss_video.h"
18 
19 enum ipipe_input_entity {
20 	IPIPE_INPUT_NONE,
21 	IPIPE_INPUT_IPIPEIF,
22 };
23 
24 #define IPIPE_OUTPUT_VP				BIT(0)
25 
26 /* Sink and source IPIPE pads */
27 #define IPIPE_PAD_SINK				0
28 #define IPIPE_PAD_SOURCE_VP			1
29 #define IPIPE_PADS_NUM				2
30 
31 /*
32  * struct iss_ipipe_device - Structure for the IPIPE module to store its own
33  *			    information
34  * @subdev: V4L2 subdevice
35  * @pads: Sink and source media entity pads
36  * @formats: Active video formats
37  * @input: Active input
38  * @output: Active outputs
39  * @error: A hardware error occurred during capture
40  * @state: Streaming state
41  * @wait: Wait queue used to stop the module
42  * @stopping: Stopping state
43  */
44 struct iss_ipipe_device {
45 	struct v4l2_subdev subdev;
46 	struct media_pad pads[IPIPE_PADS_NUM];
47 	struct v4l2_mbus_framefmt formats[IPIPE_PADS_NUM];
48 
49 	enum ipipe_input_entity input;
50 	unsigned int output;
51 	unsigned int error;
52 
53 	enum iss_pipeline_stream_state state;
54 	wait_queue_head_t wait;
55 	atomic_t stopping;
56 };
57 
58 struct iss_device;
59 
60 int omap4iss_ipipe_register_entities(struct iss_ipipe_device *ipipe,
61 				     struct v4l2_device *vdev);
62 void omap4iss_ipipe_unregister_entities(struct iss_ipipe_device *ipipe);
63 
64 int omap4iss_ipipe_init(struct iss_device *iss);
65 void omap4iss_ipipe_cleanup(struct iss_device *iss);
66 
67 #endif	/* OMAP4_ISS_IPIPE_H */
68