Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm-4.9 / 2c3fb08b3f74b8792004095a1f6881a3296ff643 / . / drivers / media / platform / s5p-jpeg / jpeg-core.h
blob: 022b9b9baff933c9303b7b1be42226137ab5cb64 [file] [log] [blame]
Mauro Carvalho Chehab2c3fb082012-08-14 17:31:16 -0300[diff] [blame^]1/* linux/drivers/media/platform/s5p-jpeg/jpeg-core.h
Andrzej Pietrasiewiczbb677f32011-11-24 11:15:23 -0300[diff] [blame]2 *
3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com
5 *
6 * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.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 version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#ifndef JPEG_CORE_H_
14#define JPEG_CORE_H_
15
16#include <media/v4l2-device.h>
Sylwester Nawrocki275de242012-02-17 11:38:09 -0300[diff] [blame]17#include <media/v4l2-fh.h>
Sylwester Nawrocki15f4bc32012-02-17 11:39:36 -0300[diff] [blame]18#include <media/v4l2-ctrls.h>
Andrzej Pietrasiewiczbb677f32011-11-24 11:15:23 -0300[diff] [blame]19
20#define S5P_JPEG_M2M_NAME "s5p-jpeg"
21
22/* JPEG compression quality setting */
23#define S5P_JPEG_COMPR_QUAL_BEST 0
24#define S5P_JPEG_COMPR_QUAL_WORST 3
25
26/* JPEG RGB to YCbCr conversion matrix coefficients */
27#define S5P_JPEG_COEF11 0x4d
28#define S5P_JPEG_COEF12 0x97
29#define S5P_JPEG_COEF13 0x1e
30#define S5P_JPEG_COEF21 0x2c
31#define S5P_JPEG_COEF22 0x57
32#define S5P_JPEG_COEF23 0x83
33#define S5P_JPEG_COEF31 0x83
34#define S5P_JPEG_COEF32 0x6e
35#define S5P_JPEG_COEF33 0x13
36
37/* a selection of JPEG markers */
38#define TEM 0x01
39#define SOF0 0xc0
40#define RST 0xd0
41#define SOI 0xd8
42#define EOI 0xd9
43#define DHP 0xde
44
45/* Flags that indicate a format can be used for capture/output */
46#define MEM2MEM_CAPTURE (1 << 0)
47#define MEM2MEM_OUTPUT (1 << 1)
48
49/**
50 * struct s5p_jpeg - JPEG IP abstraction
51 * @lock: the mutex protecting this structure
Sylwester Nawrocki15f4bc32012-02-17 11:39:36 -0300[diff] [blame]52 * @slock: spinlock protecting the device contexts
Andrzej Pietrasiewiczbb677f32011-11-24 11:15:23 -0300[diff] [blame]53 * @v4l2_dev: v4l2 device for mem2mem mode
54 * @vfd_encoder: video device node for encoder mem2mem mode
55 * @vfd_decoder: video device node for decoder mem2mem mode
56 * @m2m_dev: v4l2 mem2mem device data
Andrzej Pietrasiewiczbb677f32011-11-24 11:15:23 -0300[diff] [blame]57 * @regs: JPEG IP registers mapping
58 * @irq: JPEG IP irq
59 * @clk: JPEG IP clock
60 * @dev: JPEG IP struct device
61 * @alloc_ctx: videobuf2 memory allocator's context
62 */
63struct s5p_jpeg {
64 struct mutex lock;
Sylwester Nawrocki15f4bc32012-02-17 11:39:36 -0300[diff] [blame]65 struct spinlock slock;
Andrzej Pietrasiewiczbb677f32011-11-24 11:15:23 -0300[diff] [blame]66
67 struct v4l2_device v4l2_dev;
68 struct video_device *vfd_encoder;
69 struct video_device *vfd_decoder;
70 struct v4l2_m2m_dev *m2m_dev;
71
Andrzej Pietrasiewiczbb677f32011-11-24 11:15:23 -0300[diff] [blame]72 void __iomem *regs;
73 unsigned int irq;
74 struct clk *clk;
75 struct device *dev;
76 void *alloc_ctx;
77};
78
79/**
80 * struct jpeg_fmt - driver's internal color format data
81 * @name: format descritpion
82 * @fourcc: the fourcc code, 0 if not applicable
83 * @depth: number of bits per pixel
84 * @colplanes: number of color planes (1 for packed formats)
85 * @h_align: horizontal alignment order (align to 2^h_align)
86 * @v_align: vertical alignment order (align to 2^v_align)
87 * @types: types of queue this format is applicable to
88 */
89struct s5p_jpeg_fmt {
90 char *name;
91 u32 fourcc;
92 int depth;
93 int colplanes;
94 int h_align;
95 int v_align;
96 u32 types;
97};
98
99/**
100 * s5p_jpeg_q_data - parameters of one queue
101 * @fmt: driver-specific format of this queue
102 * @w: image width
103 * @h: image height
104 * @size: image buffer size in bytes
105 */
106struct s5p_jpeg_q_data {
107 struct s5p_jpeg_fmt *fmt;
108 u32 w;
109 u32 h;
110 u32 size;
111};
112
113/**
114 * s5p_jpeg_ctx - the device context data
115 * @jpeg: JPEG IP device for this context
116 * @mode: compression (encode) operation or decompression (decode)
117 * @compr_quality: destination image quality in compression (encode) mode
118 * @m2m_ctx: mem2mem device context
119 * @out_q: source (output) queue information
120 * @cap_fmt: destination (capture) queue queue information
121 * @hdr_parsed: set if header has been parsed during decompression
Sylwester Nawrocki15f4bc32012-02-17 11:39:36 -0300[diff] [blame]122 * @ctrl_handler: controls handler
Andrzej Pietrasiewiczbb677f32011-11-24 11:15:23 -0300[diff] [blame]123 */
124struct s5p_jpeg_ctx {
125 struct s5p_jpeg *jpeg;
126 unsigned int mode;
Sylwester Nawrocki15f4bc32012-02-17 11:39:36 -0300[diff] [blame]127 unsigned short compr_quality;
128 unsigned short restart_interval;
129 unsigned short subsampling;
Andrzej Pietrasiewiczbb677f32011-11-24 11:15:23 -0300[diff] [blame]130 struct v4l2_m2m_ctx *m2m_ctx;
131 struct s5p_jpeg_q_data out_q;
132 struct s5p_jpeg_q_data cap_q;
Sylwester Nawrocki275de242012-02-17 11:38:09 -0300[diff] [blame]133 struct v4l2_fh fh;
Andrzej Pietrasiewiczbb677f32011-11-24 11:15:23 -0300[diff] [blame]134 bool hdr_parsed;
Sylwester Nawrocki15f4bc32012-02-17 11:39:36 -0300[diff] [blame]135 struct v4l2_ctrl_handler ctrl_handler;
Andrzej Pietrasiewiczbb677f32011-11-24 11:15:23 -0300[diff] [blame]136};
137
138/**
139 * s5p_jpeg_buffer - description of memory containing input JPEG data
140 * @size: buffer size
141 * @curr: current position in the buffer
142 * @data: pointer to the data
143 */
144struct s5p_jpeg_buffer {
145 unsigned long size;
146 unsigned long curr;
147 unsigned long data;
148};
149
150#endif /* JPEG_CORE_H */