1/*
2 * ispresizer.h
3 *
4 * TI OMAP3 ISP - Resizer module
5 *
6 * Copyright (C) 2010 Nokia Corporation
7 * Copyright (C) 2009 Texas Instruments, Inc
8 *
9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
10 *	     Sakari Ailus <sakari.ailus@iki.fi>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 */
16
17#ifndef OMAP3_ISP_RESIZER_H
18#define OMAP3_ISP_RESIZER_H
19
20#include <linux/spinlock.h>
21#include <linux/types.h>
22
23/*
24 * Constants for filter coefficients count
25 */
26#define COEFF_CNT		32
27
28/*
29 * struct isprsz_coef - Structure for resizer filter coefficients.
30 * @h_filter_coef_4tap: Horizontal filter coefficients for 8-phase/4-tap
31 *			mode (.5x-4x)
32 * @v_filter_coef_4tap: Vertical filter coefficients for 8-phase/4-tap
33 *			mode (.5x-4x)
34 * @h_filter_coef_7tap: Horizontal filter coefficients for 4-phase/7-tap
35 *			mode (.25x-.5x)
36 * @v_filter_coef_7tap: Vertical filter coefficients for 4-phase/7-tap
37 *			mode (.25x-.5x)
38 */
39struct isprsz_coef {
40	u16 h_filter_coef_4tap[32];
41	u16 v_filter_coef_4tap[32];
42	/* Every 8th value is a dummy value in the following arrays: */
43	u16 h_filter_coef_7tap[32];
44	u16 v_filter_coef_7tap[32];
45};
46
47/* Chrominance horizontal algorithm */
48enum resizer_chroma_algo {
49	RSZ_THE_SAME = 0,	/* Chrominance the same as Luminance */
50	RSZ_BILINEAR = 1,	/* Chrominance uses bilinear interpolation */
51};
52
53/* Resizer input type select */
54enum resizer_colors_type {
55	RSZ_YUV422 = 0,		/* YUV422 color is interleaved */
56	RSZ_COLOR8 = 1,		/* Color separate data on 8 bits */
57};
58
59/*
60 * Structure for horizontal and vertical resizing value
61 */
62struct resizer_ratio {
63	u32 horz;
64	u32 vert;
65};
66
67/*
68 * Structure for luminance enhancer parameters.
69 */
70struct resizer_luma_yenh {
71	u8 algo;		/* algorithm select. */
72	u8 gain;		/* maximum gain. */
73	u8 slope;		/* slope. */
74	u8 core;		/* core offset. */
75};
76
77enum resizer_input_entity {
78	RESIZER_INPUT_NONE,
79	RESIZER_INPUT_VP,	/* input video port - prev or ccdc */
80	RESIZER_INPUT_MEMORY,
81};
82
83/* Sink and source resizer pads */
84#define RESZ_PAD_SINK			0
85#define RESZ_PAD_SOURCE			1
86#define RESZ_PADS_NUM			2
87
88/*
89 * struct isp_res_device - OMAP3 ISP resizer module
90 * @lock: Protects formats and crop rectangles between set_selection and IRQ
91 * @crop.request: Crop rectangle requested by the user
92 * @crop.active: Active crop rectangle (based on hardware requirements)
93 */
94struct isp_res_device {
95	struct v4l2_subdev subdev;
96	struct media_pad pads[RESZ_PADS_NUM];
97	struct v4l2_mbus_framefmt formats[RESZ_PADS_NUM];
98
99	enum resizer_input_entity input;
100	struct isp_video video_in;
101	struct isp_video video_out;
102
103	u32 addr_base;   /* stored source buffer address in memory mode */
104	u32 crop_offset; /* additional offset for crop in memory mode */
105	struct resizer_ratio ratio;
106	int pm_state;
107	unsigned int applycrop:1;
108	enum isp_pipeline_stream_state state;
109	wait_queue_head_t wait;
110	atomic_t stopping;
111	spinlock_t lock;
112
113	struct {
114		struct v4l2_rect request;
115		struct v4l2_rect active;
116	} crop;
117};
118
119struct isp_device;
120
121int omap3isp_resizer_init(struct isp_device *isp);
122void omap3isp_resizer_cleanup(struct isp_device *isp);
123
124int omap3isp_resizer_register_entities(struct isp_res_device *res,
125				       struct v4l2_device *vdev);
126void omap3isp_resizer_unregister_entities(struct isp_res_device *res);
127void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res);
128void omap3isp_resizer_isr(struct isp_res_device *isp_res);
129
130void omap3isp_resizer_max_rate(struct isp_res_device *res,
131			       unsigned int *max_rate);
132
133void omap3isp_resizer_suspend(struct isp_res_device *isp_res);
134
135void omap3isp_resizer_resume(struct isp_res_device *isp_res);
136
137int omap3isp_resizer_busy(struct isp_res_device *isp_res);
138
139#endif	/* OMAP3_ISP_RESIZER_H */
140