1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * TI OMAP4 ISS V4L2 Driver - ISP RESIZER module
4 *
5 * Copyright (C) 2012 Texas Instruments, Inc.
6 *
7 * Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
8 */
9
10#ifndef OMAP4_ISS_RESIZER_H
11#define OMAP4_ISS_RESIZER_H
12
13#include "iss_video.h"
14
15enum resizer_input_entity {
16	RESIZER_INPUT_NONE,
17	RESIZER_INPUT_IPIPE,
18	RESIZER_INPUT_IPIPEIF
19};
20
21#define RESIZER_OUTPUT_MEMORY			BIT(0)
22
23/* Sink and source RESIZER pads */
24#define RESIZER_PAD_SINK			0
25#define RESIZER_PAD_SOURCE_MEM			1
26#define RESIZER_PADS_NUM			2
27
28/*
29 * struct iss_resizer_device - Structure for the RESIZER module to store its own
30 *			    information
31 * @subdev: V4L2 subdevice
32 * @pads: Sink and source media entity pads
33 * @formats: Active video formats
34 * @input: Active input
35 * @output: Active outputs
36 * @video_out: Output video node
37 * @error: A hardware error occurred during capture
38 * @state: Streaming state
39 * @wait: Wait queue used to stop the module
40 * @stopping: Stopping state
41 */
42struct iss_resizer_device {
43	struct v4l2_subdev subdev;
44	struct media_pad pads[RESIZER_PADS_NUM];
45	struct v4l2_mbus_framefmt formats[RESIZER_PADS_NUM];
46
47	enum resizer_input_entity input;
48	unsigned int output;
49	struct iss_video video_out;
50	unsigned int error;
51
52	enum iss_pipeline_stream_state state;
53	wait_queue_head_t wait;
54	atomic_t stopping;
55};
56
57struct iss_device;
58
59int omap4iss_resizer_init(struct iss_device *iss);
60int omap4iss_resizer_create_links(struct iss_device *iss);
61void omap4iss_resizer_cleanup(struct iss_device *iss);
62int omap4iss_resizer_register_entities(struct iss_resizer_device *resizer,
63				       struct v4l2_device *vdev);
64void omap4iss_resizer_unregister_entities(struct iss_resizer_device *resizer);
65
66int omap4iss_resizer_busy(struct iss_resizer_device *resizer);
67void omap4iss_resizer_isr(struct iss_resizer_device *resizer, u32 events);
68void omap4iss_resizer_restore_context(struct iss_device *iss);
69void omap4iss_resizer_max_rate(struct iss_resizer_device *resizer,
70			       unsigned int *max_rate);
71
72#endif	/* OMAP4_ISS_RESIZER_H */
73