1/* linux/drivers/media/platform/s5p-jpeg/jpeg-core.h 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 <linux/interrupt.h> 17#include <media/v4l2-device.h> 18#include <media/v4l2-fh.h> 19#include <media/v4l2-ctrls.h> 20 21#define S5P_JPEG_M2M_NAME "s5p-jpeg" 22 23/* JPEG compression quality setting */ 24#define S5P_JPEG_COMPR_QUAL_BEST 0 25#define S5P_JPEG_COMPR_QUAL_WORST 3 26 27/* JPEG RGB to YCbCr conversion matrix coefficients */ 28#define S5P_JPEG_COEF11 0x4d 29#define S5P_JPEG_COEF12 0x97 30#define S5P_JPEG_COEF13 0x1e 31#define S5P_JPEG_COEF21 0x2c 32#define S5P_JPEG_COEF22 0x57 33#define S5P_JPEG_COEF23 0x83 34#define S5P_JPEG_COEF31 0x83 35#define S5P_JPEG_COEF32 0x6e 36#define S5P_JPEG_COEF33 0x13 37 38#define EXYNOS3250_IRQ_TIMEOUT 0x10000000 39 40/* a selection of JPEG markers */ 41#define TEM 0x01 42#define SOF0 0xc0 43#define RST 0xd0 44#define SOI 0xd8 45#define EOI 0xd9 46#define DHP 0xde 47 48/* Flags that indicate a format can be used for capture/output */ 49#define SJPEG_FMT_FLAG_ENC_CAPTURE (1 << 0) 50#define SJPEG_FMT_FLAG_ENC_OUTPUT (1 << 1) 51#define SJPEG_FMT_FLAG_DEC_CAPTURE (1 << 2) 52#define SJPEG_FMT_FLAG_DEC_OUTPUT (1 << 3) 53#define SJPEG_FMT_FLAG_S5P (1 << 4) 54#define SJPEG_FMT_FLAG_EXYNOS3250 (1 << 5) 55#define SJPEG_FMT_FLAG_EXYNOS4 (1 << 6) 56#define SJPEG_FMT_RGB (1 << 7) 57#define SJPEG_FMT_NON_RGB (1 << 8) 58 59#define S5P_JPEG_ENCODE 0 60#define S5P_JPEG_DECODE 1 61 62#define FMT_TYPE_OUTPUT 0 63#define FMT_TYPE_CAPTURE 1 64 65#define SJPEG_SUBSAMPLING_444 0x11 66#define SJPEG_SUBSAMPLING_422 0x21 67#define SJPEG_SUBSAMPLING_420 0x22 68 69/* Version numbers */ 70 71#define SJPEG_S5P 1 72#define SJPEG_EXYNOS3250 2 73#define SJPEG_EXYNOS4 3 74 75enum exynos4_jpeg_result { 76 OK_ENC_OR_DEC, 77 ERR_PROT, 78 ERR_DEC_INVALID_FORMAT, 79 ERR_MULTI_SCAN, 80 ERR_FRAME, 81 ERR_UNKNOWN, 82}; 83 84enum exynos4_jpeg_img_quality_level { 85 QUALITY_LEVEL_1 = 0, /* high */ 86 QUALITY_LEVEL_2, 87 QUALITY_LEVEL_3, 88 QUALITY_LEVEL_4, /* low */ 89}; 90 91/** 92 * struct s5p_jpeg - JPEG IP abstraction 93 * @lock: the mutex protecting this structure 94 * @slock: spinlock protecting the device contexts 95 * @v4l2_dev: v4l2 device for mem2mem mode 96 * @vfd_encoder: video device node for encoder mem2mem mode 97 * @vfd_decoder: video device node for decoder mem2mem mode 98 * @m2m_dev: v4l2 mem2mem device data 99 * @regs: JPEG IP registers mapping 100 * @irq: JPEG IP irq 101 * @clk: JPEG IP clock 102 * @sclk: Exynos3250 JPEG IP special clock 103 * @dev: JPEG IP struct device 104 * @alloc_ctx: videobuf2 memory allocator's context 105 * @variant: driver variant to be used 106 * @irq_status interrupt flags set during single encode/decode 107 operation 108 109 */ 110struct s5p_jpeg { 111 struct mutex lock; 112 spinlock_t slock; 113 114 struct v4l2_device v4l2_dev; 115 struct video_device *vfd_encoder; 116 struct video_device *vfd_decoder; 117 struct v4l2_m2m_dev *m2m_dev; 118 119 void __iomem *regs; 120 unsigned int irq; 121 enum exynos4_jpeg_result irq_ret; 122 struct clk *clk; 123 struct clk *sclk; 124 struct device *dev; 125 void *alloc_ctx; 126 struct s5p_jpeg_variant *variant; 127 u32 irq_status; 128}; 129 130struct s5p_jpeg_variant { 131 unsigned int version; 132 unsigned int fmt_ver_flag; 133 struct v4l2_m2m_ops *m2m_ops; 134 irqreturn_t (*jpeg_irq)(int irq, void *priv); 135}; 136 137/** 138 * struct jpeg_fmt - driver's internal color format data 139 * @name: format descritpion 140 * @fourcc: the fourcc code, 0 if not applicable 141 * @depth: number of bits per pixel 142 * @colplanes: number of color planes (1 for packed formats) 143 * @h_align: horizontal alignment order (align to 2^h_align) 144 * @v_align: vertical alignment order (align to 2^v_align) 145 * @flags: flags describing format applicability 146 */ 147struct s5p_jpeg_fmt { 148 char *name; 149 u32 fourcc; 150 int depth; 151 int colplanes; 152 int memplanes; 153 int h_align; 154 int v_align; 155 int subsampling; 156 u32 flags; 157}; 158 159/** 160 * s5p_jpeg_q_data - parameters of one queue 161 * @fmt: driver-specific format of this queue 162 * @w: image width 163 * @h: image height 164 * @size: image buffer size in bytes 165 */ 166struct s5p_jpeg_q_data { 167 struct s5p_jpeg_fmt *fmt; 168 u32 w; 169 u32 h; 170 u32 size; 171}; 172 173/** 174 * s5p_jpeg_ctx - the device context data 175 * @jpeg: JPEG IP device for this context 176 * @mode: compression (encode) operation or decompression (decode) 177 * @compr_quality: destination image quality in compression (encode) mode 178 * @restart_interval: JPEG restart interval for JPEG encoding 179 * @subsampling: subsampling of a raw format or a JPEG 180 * @out_q: source (output) queue information 181 * @cap_q: destination (capture) queue queue information 182 * @scale_factor: scale factor for JPEG decoding 183 * @crop_rect: a rectangle representing crop area of the output buffer 184 * @fh: V4L2 file handle 185 * @hdr_parsed: set if header has been parsed during decompression 186 * @crop_altered: set if crop rectangle has been altered by the user space 187 * @ctrl_handler: controls handler 188 */ 189struct s5p_jpeg_ctx { 190 struct s5p_jpeg *jpeg; 191 unsigned int mode; 192 unsigned short compr_quality; 193 unsigned short restart_interval; 194 unsigned short subsampling; 195 struct s5p_jpeg_q_data out_q; 196 struct s5p_jpeg_q_data cap_q; 197 unsigned int scale_factor; 198 struct v4l2_rect crop_rect; 199 struct v4l2_fh fh; 200 bool hdr_parsed; 201 bool crop_altered; 202 struct v4l2_ctrl_handler ctrl_handler; 203}; 204 205/** 206 * s5p_jpeg_buffer - description of memory containing input JPEG data 207 * @size: buffer size 208 * @curr: current position in the buffer 209 * @data: pointer to the data 210 */ 211struct s5p_jpeg_buffer { 212 unsigned long size; 213 unsigned long curr; 214 unsigned long data; 215}; 216 217/** 218 * struct s5p_jpeg_addr - JPEG converter physical address set for DMA 219 * @y: luminance plane physical address 220 * @cb: Cb plane physical address 221 * @cr: Cr plane physical address 222 */ 223struct s5p_jpeg_addr { 224 u32 y; 225 u32 cb; 226 u32 cr; 227}; 228 229#endif /* JPEG_CORE_H */ 230