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 #define JPEG_MAX_CLOCKS 4
25 /* JPEG compression quality setting */
26 #define S5P_JPEG_COMPR_QUAL_BEST 0
27 #define S5P_JPEG_COMPR_QUAL_WORST 3
29 /* JPEG RGB to YCbCr conversion matrix coefficients */
30 #define S5P_JPEG_COEF11 0x4d
31 #define S5P_JPEG_COEF12 0x97
32 #define S5P_JPEG_COEF13 0x1e
33 #define S5P_JPEG_COEF21 0x2c
34 #define S5P_JPEG_COEF22 0x57
35 #define S5P_JPEG_COEF23 0x83
36 #define S5P_JPEG_COEF31 0x83
37 #define S5P_JPEG_COEF32 0x6e
38 #define S5P_JPEG_COEF33 0x13
40 #define EXYNOS3250_IRQ_TIMEOUT 0x10000000
42 /* a selection of JPEG markers */
53 /* Flags that indicate a format can be used for capture/output */
54 #define SJPEG_FMT_FLAG_ENC_CAPTURE (1 << 0)
55 #define SJPEG_FMT_FLAG_ENC_OUTPUT (1 << 1)
56 #define SJPEG_FMT_FLAG_DEC_CAPTURE (1 << 2)
57 #define SJPEG_FMT_FLAG_DEC_OUTPUT (1 << 3)
58 #define SJPEG_FMT_FLAG_S5P (1 << 4)
59 #define SJPEG_FMT_FLAG_EXYNOS3250 (1 << 5)
60 #define SJPEG_FMT_FLAG_EXYNOS4 (1 << 6)
61 #define SJPEG_FMT_RGB (1 << 7)
62 #define SJPEG_FMT_NON_RGB (1 << 8)
64 #define S5P_JPEG_ENCODE 0
65 #define S5P_JPEG_DECODE 1
67 #define FMT_TYPE_OUTPUT 0
68 #define FMT_TYPE_CAPTURE 1
70 #define SJPEG_SUBSAMPLING_444 0x11
71 #define SJPEG_SUBSAMPLING_422 0x21
72 #define SJPEG_SUBSAMPLING_420 0x22
74 #define S5P_JPEG_MAX_MARKER 4
85 enum exynos4_jpeg_result {
88 ERR_DEC_INVALID_FORMAT,
94 enum exynos4_jpeg_img_quality_level {
95 QUALITY_LEVEL_1 = 0, /* high */
98 QUALITY_LEVEL_4, /* low */
101 enum s5p_jpeg_ctx_state {
103 JPEGCTX_RESOLUTION_CHANGE,
107 * struct s5p_jpeg - JPEG IP abstraction
108 * @lock: the mutex protecting this structure
109 * @slock: spinlock protecting the device contexts
110 * @v4l2_dev: v4l2 device for mem2mem mode
111 * @vfd_encoder: video device node for encoder mem2mem mode
112 * @vfd_decoder: video device node for decoder mem2mem mode
113 * @m2m_dev: v4l2 mem2mem device data
114 * @regs: JPEG IP registers mapping
116 * @clocks: JPEG IP clock(s)
117 * @dev: JPEG IP struct device
118 * @variant: driver variant to be used
119 * @irq_status interrupt flags set during single encode/decode
127 struct v4l2_device v4l2_dev;
128 struct video_device *vfd_encoder;
129 struct video_device *vfd_decoder;
130 struct v4l2_m2m_dev *m2m_dev;
134 enum exynos4_jpeg_result irq_ret;
135 struct clk *clocks[JPEG_MAX_CLOCKS];
137 struct s5p_jpeg_variant *variant;
141 struct s5p_jpeg_variant {
142 unsigned int version;
143 unsigned int fmt_ver_flag;
144 unsigned int hw3250_compat:1;
145 unsigned int htbl_reinit:1;
146 unsigned int hw_ex4_compat:1;
147 struct v4l2_m2m_ops *m2m_ops;
148 irqreturn_t (*jpeg_irq)(int irq, void *priv);
149 const char *clk_names[JPEG_MAX_CLOCKS];
154 * struct jpeg_fmt - driver's internal color format data
155 * @name: format descritpion
156 * @fourcc: the fourcc code, 0 if not applicable
157 * @depth: number of bits per pixel
158 * @colplanes: number of color planes (1 for packed formats)
159 * @h_align: horizontal alignment order (align to 2^h_align)
160 * @v_align: vertical alignment order (align to 2^v_align)
161 * @flags: flags describing format applicability
163 struct s5p_jpeg_fmt {
176 * s5p_jpeg_marker - collection of markers from jpeg header
177 * @marker: markers' positions relative to the buffer beginning
178 * @len: markers' payload lengths (without length field)
179 * @n: number of markers in collection
181 struct s5p_jpeg_marker {
182 u32 marker[S5P_JPEG_MAX_MARKER];
183 u32 len[S5P_JPEG_MAX_MARKER];
188 * s5p_jpeg_q_data - parameters of one queue
189 * @fmt: driver-specific format of this queue
192 * @sos: SOS marker's position relative to the buffer beginning
193 * @dht: DHT markers' positions relative to the buffer beginning
194 * @dqt: DQT markers' positions relative to the buffer beginning
195 * @sof: SOF0 marker's postition relative to the buffer beginning
196 * @sof_len: SOF0 marker's payload length (without length field itself)
197 * @components: number of image components
198 * @size: image buffer size in bytes
200 struct s5p_jpeg_q_data {
201 struct s5p_jpeg_fmt *fmt;
205 struct s5p_jpeg_marker dht;
206 struct s5p_jpeg_marker dqt;
214 * s5p_jpeg_ctx - the device context data
215 * @jpeg: JPEG IP device for this context
216 * @mode: compression (encode) operation or decompression (decode)
217 * @compr_quality: destination image quality in compression (encode) mode
218 * @restart_interval: JPEG restart interval for JPEG encoding
219 * @subsampling: subsampling of a raw format or a JPEG
220 * @out_q: source (output) queue information
221 * @cap_q: destination (capture) queue queue information
222 * @scale_factor: scale factor for JPEG decoding
223 * @crop_rect: a rectangle representing crop area of the output buffer
224 * @fh: V4L2 file handle
225 * @hdr_parsed: set if header has been parsed during decompression
226 * @crop_altered: set if crop rectangle has been altered by the user space
227 * @ctrl_handler: controls handler
228 * @state: state of the context
230 struct s5p_jpeg_ctx {
231 struct s5p_jpeg *jpeg;
233 unsigned short compr_quality;
234 unsigned short restart_interval;
235 unsigned short subsampling;
236 struct s5p_jpeg_q_data out_q;
237 struct s5p_jpeg_q_data cap_q;
238 unsigned int scale_factor;
239 struct v4l2_rect crop_rect;
243 struct v4l2_ctrl_handler ctrl_handler;
244 enum s5p_jpeg_ctx_state state;
248 * s5p_jpeg_buffer - description of memory containing input JPEG data
250 * @curr: current position in the buffer
251 * @data: pointer to the data
253 struct s5p_jpeg_buffer {
260 * struct s5p_jpeg_addr - JPEG converter physical address set for DMA
261 * @y: luminance plane physical address
262 * @cb: Cb plane physical address
263 * @cr: Cr plane physical address
265 struct s5p_jpeg_addr {
271 #endif /* JPEG_CORE_H */