1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * ispresizer.h
4 *
5 * TI OMAP3 ISP - Resizer module
6 *
7 * Copyright (C) 2010 Nokia Corporation
8 * Copyright (C) 2009 Texas Instruments, Inc
9 *
10 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
11 * Sakari Ailus <sakari.ailus@iki.fi>
12 */
13
14 #ifndef OMAP3_ISP_RESIZER_H
15 #define OMAP3_ISP_RESIZER_H
16
17 #include <linux/spinlock.h>
18 #include <linux/types.h>
19
20 /*
21 * Constants for filter coefficients count
22 */
23 #define COEFF_CNT 32
24
25 /*
26 * struct isprsz_coef - Structure for resizer filter coefficients.
27 * @h_filter_coef_4tap: Horizontal filter coefficients for 8-phase/4-tap
28 * mode (.5x-4x)
29 * @v_filter_coef_4tap: Vertical filter coefficients for 8-phase/4-tap
30 * mode (.5x-4x)
31 * @h_filter_coef_7tap: Horizontal filter coefficients for 4-phase/7-tap
32 * mode (.25x-.5x)
33 * @v_filter_coef_7tap: Vertical filter coefficients for 4-phase/7-tap
34 * mode (.25x-.5x)
35 */
36 struct isprsz_coef {
37 u16 h_filter_coef_4tap[32];
38 u16 v_filter_coef_4tap[32];
39 /* Every 8th value is a dummy value in the following arrays: */
40 u16 h_filter_coef_7tap[32];
41 u16 v_filter_coef_7tap[32];
42 };
43
44 /* Chrominance horizontal algorithm */
45 enum resizer_chroma_algo {
46 RSZ_THE_SAME = 0, /* Chrominance the same as Luminance */
47 RSZ_BILINEAR = 1, /* Chrominance uses bilinear interpolation */
48 };
49
50 /* Resizer input type select */
51 enum resizer_colors_type {
52 RSZ_YUV422 = 0, /* YUV422 color is interleaved */
53 RSZ_COLOR8 = 1, /* Color separate data on 8 bits */
54 };
55
56 /*
57 * Structure for horizontal and vertical resizing value
58 */
59 struct resizer_ratio {
60 u32 horz;
61 u32 vert;
62 };
63
64 /*
65 * Structure for luminance enhancer parameters.
66 */
67 struct resizer_luma_yenh {
68 u8 algo; /* algorithm select. */
69 u8 gain; /* maximum gain. */
70 u8 slope; /* slope. */
71 u8 core; /* core offset. */
72 };
73
74 enum resizer_input_entity {
75 RESIZER_INPUT_NONE,
76 RESIZER_INPUT_VP, /* input video port - prev or ccdc */
77 RESIZER_INPUT_MEMORY,
78 };
79
80 /* Sink and source resizer pads */
81 #define RESZ_PAD_SINK 0
82 #define RESZ_PAD_SOURCE 1
83 #define RESZ_PADS_NUM 2
84
85 /*
86 * struct isp_res_device - OMAP3 ISP resizer module
87 * @lock: Protects formats and crop rectangles between set_selection and IRQ
88 * @crop.request: Crop rectangle requested by the user
89 * @crop.active: Active crop rectangle (based on hardware requirements)
90 */
91 struct isp_res_device {
92 struct v4l2_subdev subdev;
93 struct media_pad pads[RESZ_PADS_NUM];
94 struct v4l2_mbus_framefmt formats[RESZ_PADS_NUM];
95
96 enum resizer_input_entity input;
97 struct isp_video video_in;
98 struct isp_video video_out;
99
100 u32 addr_base; /* stored source buffer address in memory mode */
101 u32 crop_offset; /* additional offset for crop in memory mode */
102 struct resizer_ratio ratio;
103 int pm_state;
104 unsigned int applycrop:1;
105 enum isp_pipeline_stream_state state;
106 wait_queue_head_t wait;
107 atomic_t stopping;
108 spinlock_t lock;
109
110 struct {
111 struct v4l2_rect request;
112 struct v4l2_rect active;
113 } crop;
114 };
115
116 struct isp_device;
117
118 int omap3isp_resizer_init(struct isp_device *isp);
119 void omap3isp_resizer_cleanup(struct isp_device *isp);
120
121 int omap3isp_resizer_register_entities(struct isp_res_device *res,
122 struct v4l2_device *vdev);
123 void omap3isp_resizer_unregister_entities(struct isp_res_device *res);
124 void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res);
125 void omap3isp_resizer_isr(struct isp_res_device *isp_res);
126
127 void omap3isp_resizer_max_rate(struct isp_res_device *res,
128 unsigned int *max_rate);
129
130 void omap3isp_resizer_suspend(struct isp_res_device *isp_res);
131
132 void omap3isp_resizer_resume(struct isp_res_device *isp_res);
133
134 int omap3isp_resizer_busy(struct isp_res_device *isp_res);
135
136 #endif /* OMAP3_ISP_RESIZER_H */