1 /* linux/drivers/media/platform/s5p-jpeg/jpeg-core.h
3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com
6 * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
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.
16 #include <linux/interrupt.h>
17 #include <media/v4l2-device.h>
18 #include <media/v4l2-fh.h>
19 #include <media/v4l2-ctrls.h>
21 #define S5P_JPEG_M2M_NAME "s5p-jpeg"
23 /* JPEG compression quality setting */
24 #define S5P_JPEG_COMPR_QUAL_BEST 0
25 #define S5P_JPEG_COMPR_QUAL_WORST 3
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
38 #define EXYNOS3250_IRQ_TIMEOUT 0x10000000
40 /* a selection of JPEG markers */
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)
59 #define S5P_JPEG_ENCODE 0
60 #define S5P_JPEG_DECODE 1
62 #define FMT_TYPE_OUTPUT 0
63 #define FMT_TYPE_CAPTURE 1
65 #define SJPEG_SUBSAMPLING_444 0x11
66 #define SJPEG_SUBSAMPLING_422 0x21
67 #define SJPEG_SUBSAMPLING_420 0x22
72 #define SJPEG_EXYNOS3250 2
73 #define SJPEG_EXYNOS4 3
75 enum exynos4_jpeg_result {
78 ERR_DEC_INVALID_FORMAT,
84 enum exynos4_jpeg_img_quality_level {
85 QUALITY_LEVEL_1 = 0, /* high */
88 QUALITY_LEVEL_4, /* low */
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
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
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;
121 enum exynos4_jpeg_result irq_ret;
126 struct s5p_jpeg_variant *variant;
130 struct 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);
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
147 struct s5p_jpeg_fmt {
160 * s5p_jpeg_q_data - parameters of one queue
161 * @fmt: driver-specific format of this queue
164 * @size: image buffer size in bytes
166 struct s5p_jpeg_q_data {
167 struct s5p_jpeg_fmt *fmt;
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
189 struct s5p_jpeg_ctx {
190 struct s5p_jpeg *jpeg;
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;
202 struct v4l2_ctrl_handler ctrl_handler;
206 * s5p_jpeg_buffer - description of memory containing input JPEG data
208 * @curr: current position in the buffer
209 * @data: pointer to the data
211 struct s5p_jpeg_buffer {
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
223 struct s5p_jpeg_addr {
229 #endif /* JPEG_CORE_H */