--- /dev/null
+/* linux/drivers/media/platform/s5p-jpeg/jpeg-core.h
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef JPEG_CORE_H_
+#define JPEG_CORE_H_
+
+#include <linux/interrupt.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ctrls.h>
+
+#define S5P_JPEG_M2M_NAME "s5p-jpeg"
+
+/* JPEG compression quality setting */
+#define S5P_JPEG_COMPR_QUAL_BEST 0
+#define S5P_JPEG_COMPR_QUAL_WORST 3
+
+/* JPEG RGB to YCbCr conversion matrix coefficients */
+#define S5P_JPEG_COEF11 0x4d
+#define S5P_JPEG_COEF12 0x97
+#define S5P_JPEG_COEF13 0x1e
+#define S5P_JPEG_COEF21 0x2c
+#define S5P_JPEG_COEF22 0x57
+#define S5P_JPEG_COEF23 0x83
+#define S5P_JPEG_COEF31 0x83
+#define S5P_JPEG_COEF32 0x6e
+#define S5P_JPEG_COEF33 0x13
+
+#define EXYNOS3250_IRQ_TIMEOUT 0x10000000
+
+/* a selection of JPEG markers */
+#define TEM 0x01
+#define SOF0 0xc0
+#define RST 0xd0
+#define SOI 0xd8
+#define EOI 0xd9
+#define DHP 0xde
+
+/* Flags that indicate a format can be used for capture/output */
+#define SJPEG_FMT_FLAG_ENC_CAPTURE (1 << 0)
+#define SJPEG_FMT_FLAG_ENC_OUTPUT (1 << 1)
+#define SJPEG_FMT_FLAG_DEC_CAPTURE (1 << 2)
+#define SJPEG_FMT_FLAG_DEC_OUTPUT (1 << 3)
+#define SJPEG_FMT_FLAG_S5P (1 << 4)
+#define SJPEG_FMT_FLAG_EXYNOS3250 (1 << 5)
+#define SJPEG_FMT_FLAG_EXYNOS4 (1 << 6)
+#define SJPEG_FMT_RGB (1 << 7)
+#define SJPEG_FMT_NON_RGB (1 << 8)
+
+#define S5P_JPEG_ENCODE 0
+#define S5P_JPEG_DECODE 1
+
+#define FMT_TYPE_OUTPUT 0
+#define FMT_TYPE_CAPTURE 1
+
+#define SJPEG_SUBSAMPLING_444 0x11
+#define SJPEG_SUBSAMPLING_422 0x21
+#define SJPEG_SUBSAMPLING_420 0x22
+
+/* Version numbers */
+enum sjpeg_version {
+ SJPEG_S5P,
+ SJPEG_EXYNOS3250,
+ SJPEG_EXYNOS4,
+ SJPEG_EXYNOS5420,
+};
+
+enum exynos4_jpeg_result {
+ OK_ENC_OR_DEC,
+ ERR_PROT,
+ ERR_DEC_INVALID_FORMAT,
+ ERR_MULTI_SCAN,
+ ERR_FRAME,
+ ERR_UNKNOWN,
+};
+
+enum exynos4_jpeg_img_quality_level {
+ QUALITY_LEVEL_1 = 0, /* high */
+ QUALITY_LEVEL_2,
+ QUALITY_LEVEL_3,
+ QUALITY_LEVEL_4, /* low */
+};
+
+/**
+ * struct s5p_jpeg - JPEG IP abstraction
+ * @lock: the mutex protecting this structure
+ * @slock: spinlock protecting the device contexts
+ * @v4l2_dev: v4l2 device for mem2mem mode
+ * @vfd_encoder: video device node for encoder mem2mem mode
+ * @vfd_decoder: video device node for decoder mem2mem mode
+ * @m2m_dev: v4l2 mem2mem device data
+ * @regs: JPEG IP registers mapping
+ * @irq: JPEG IP irq
+ * @clk: JPEG IP clock
+ * @sclk: Exynos3250 JPEG IP special clock
+ * @dev: JPEG IP struct device
+ * @alloc_ctx: videobuf2 memory allocator's context
+ * @variant: driver variant to be used
+ * @irq_status interrupt flags set during single encode/decode
+ operation
+
+ */
+struct s5p_jpeg {
+ struct mutex lock;
+ spinlock_t slock;
+
+ struct v4l2_device v4l2_dev;
+ struct video_device *vfd_encoder;
+ struct video_device *vfd_decoder;
+ struct v4l2_m2m_dev *m2m_dev;
+
+ void __iomem *regs;
+ unsigned int irq;
+ enum exynos4_jpeg_result irq_ret;
+ struct clk *clk;
+ struct clk *sclk;
+ struct device *dev;
+ void *alloc_ctx;
+ struct s5p_jpeg_variant *variant;
+ u32 irq_status;
+};
+
+struct s5p_jpeg_variant {
+ unsigned int version;
+ unsigned int fmt_ver_flag;
+ unsigned int hw3250_compat:1;
+ unsigned int htbl_reinit:1;
+ struct v4l2_m2m_ops *m2m_ops;
+ irqreturn_t (*jpeg_irq)(int irq, void *priv);
+};
+
+/**
+ * struct jpeg_fmt - driver's internal color format data
+ * @name: format descritpion
+ * @fourcc: the fourcc code, 0 if not applicable
+ * @depth: number of bits per pixel
+ * @colplanes: number of color planes (1 for packed formats)
+ * @h_align: horizontal alignment order (align to 2^h_align)
+ * @v_align: vertical alignment order (align to 2^v_align)
+ * @flags: flags describing format applicability
+ */
+struct s5p_jpeg_fmt {
+ char *name;
+ u32 fourcc;
+ int depth;
+ int colplanes;
+ int memplanes;
+ int h_align;
+ int v_align;
+ int subsampling;
+ u32 flags;
+};
+
+/**
+ * s5p_jpeg_q_data - parameters of one queue
+ * @fmt: driver-specific format of this queue
+ * @w: image width
+ * @h: image height
+ * @size: image buffer size in bytes
+ */
+struct s5p_jpeg_q_data {
+ struct s5p_jpeg_fmt *fmt;
+ u32 w;
+ u32 h;
+ u32 size;
+};
+
+/**
+ * s5p_jpeg_ctx - the device context data
+ * @jpeg: JPEG IP device for this context
+ * @mode: compression (encode) operation or decompression (decode)
+ * @compr_quality: destination image quality in compression (encode) mode
+ * @restart_interval: JPEG restart interval for JPEG encoding
+ * @subsampling: subsampling of a raw format or a JPEG
+ * @out_q: source (output) queue information
+ * @cap_q: destination (capture) queue queue information
+ * @scale_factor: scale factor for JPEG decoding
+ * @crop_rect: a rectangle representing crop area of the output buffer
+ * @fh: V4L2 file handle
+ * @hdr_parsed: set if header has been parsed during decompression
+ * @crop_altered: set if crop rectangle has been altered by the user space
+ * @ctrl_handler: controls handler
+ */
+struct s5p_jpeg_ctx {
+ struct s5p_jpeg *jpeg;
+ unsigned int mode;
+ unsigned short compr_quality;
+ unsigned short restart_interval;
+ unsigned short subsampling;
+ struct s5p_jpeg_q_data out_q;
+ struct s5p_jpeg_q_data cap_q;
+ unsigned int scale_factor;
+ struct v4l2_rect crop_rect;
+ struct v4l2_fh fh;
+ bool hdr_parsed;
+ bool crop_altered;
+ struct v4l2_ctrl_handler ctrl_handler;
+};
+
+/**
+ * s5p_jpeg_buffer - description of memory containing input JPEG data
+ * @size: buffer size
+ * @curr: current position in the buffer
+ * @data: pointer to the data
+ */
+struct s5p_jpeg_buffer {
+ unsigned long size;
+ unsigned long curr;
+ unsigned long data;
+};
+
+/**
+ * struct s5p_jpeg_addr - JPEG converter physical address set for DMA
+ * @y: luminance plane physical address
+ * @cb: Cb plane physical address
+ * @cr: Cr plane physical address
+ */
+struct s5p_jpeg_addr {
+ u32 y;
+ u32 cb;
+ u32 cr;
+};
+
+#endif /* JPEG_CORE_H */
Code Review / kvmfornfv.git / blobdiff