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/*
* Copyright (c) 2016 MediaTek Inc.
* Author: Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
* Rick Chang <rick.chang@mediatek.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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _MTK_JPEG_CORE_H
#define _MTK_JPEG_CORE_H
#include <linux/interrupt.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fh.h>
#define MTK_JPEG_NAME "mtk-jpeg"
#define MTK_JPEG_FMT_FLAG_DEC_OUTPUT BIT(0)
#define MTK_JPEG_FMT_FLAG_DEC_CAPTURE BIT(1)
#define MTK_JPEG_FMT_TYPE_OUTPUT 1
#define MTK_JPEG_FMT_TYPE_CAPTURE 2
#define MTK_JPEG_MIN_WIDTH 32
#define MTK_JPEG_MIN_HEIGHT 32
#define MTK_JPEG_MAX_WIDTH 8192
#define MTK_JPEG_MAX_HEIGHT 8192
#define MTK_JPEG_DEFAULT_SIZEIMAGE (1 * 1024 * 1024)
enum mtk_jpeg_ctx_state {
MTK_JPEG_INIT = 0,
MTK_JPEG_RUNNING,
MTK_JPEG_SOURCE_CHANGE,
};
/**
* struct mt_jpeg - JPEG IP abstraction
* @lock: the mutex protecting this structure
* @hw_lock: spinlock protecting the hw device resource
* @workqueue: decode work queue
* @dev: JPEG device
* @v4l2_dev: v4l2 device for mem2mem mode
* @m2m_dev: v4l2 mem2mem device data
* @alloc_ctx: videobuf2 memory allocator's context
* @dec_vdev: video device node for decoder mem2mem mode
* @dec_reg_base: JPEG registers mapping
* @clk_jdec: JPEG hw working clock
* @clk_jdec_smi: JPEG SMI bus clock
* @larb: SMI device
*/
struct mtk_jpeg_dev {
struct mutex lock;
spinlock_t hw_lock;
struct workqueue_struct *workqueue;
struct device *dev;
struct v4l2_device v4l2_dev;
struct v4l2_m2m_dev *m2m_dev;
void *alloc_ctx;
struct video_device *dec_vdev;
void __iomem *dec_reg_base;
struct clk *clk_jdec;
struct clk *clk_jdec_smi;
struct device *larb;
};
/**
* struct jpeg_fmt - driver's internal color format data
* @fourcc: the fourcc code, 0 if not applicable
* @h_sample: horizontal sample count of plane in 4 * 4 pixel image
* @v_sample: vertical sample count of plane in 4 * 4 pixel image
* @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 mtk_jpeg_fmt {
u32 fourcc;
int h_sample[VIDEO_MAX_PLANES];
int v_sample[VIDEO_MAX_PLANES];
int colplanes;
int h_align;
int v_align;
u32 flags;
};
/**
* mtk_jpeg_q_data - parameters of one queue
* @fmt: driver-specific format of this queue
* @w: image width
* @h: image height
* @bytesperline: distance in bytes between the leftmost pixels in two adjacent
* lines
* @sizeimage: image buffer size in bytes
*/
struct mtk_jpeg_q_data {
struct mtk_jpeg_fmt *fmt;
u32 w;
u32 h;
u32 bytesperline[VIDEO_MAX_PLANES];
u32 sizeimage[VIDEO_MAX_PLANES];
};
/**
* mtk_jpeg_ctx - the device context data
* @jpeg: JPEG IP device for this context
* @out_q: source (output) queue information
* @cap_q: destination (capture) queue queue information
* @fh: V4L2 file handle
* @dec_param parameters for HW decoding
* @state: state of the context
* @header_valid: set if header has been parsed and valid
* @colorspace: enum v4l2_colorspace; supplemental to pixelformat
* @ycbcr_enc: enum v4l2_ycbcr_encoding, Y'CbCr encoding
* @quantization: enum v4l2_quantization, colorspace quantization
* @xfer_func: enum v4l2_xfer_func, colorspace transfer function
*/
struct mtk_jpeg_ctx {
struct mtk_jpeg_dev *jpeg;
struct mtk_jpeg_q_data out_q;
struct mtk_jpeg_q_data cap_q;
struct v4l2_fh fh;
enum mtk_jpeg_ctx_state state;
enum v4l2_colorspace colorspace;
enum v4l2_ycbcr_encoding ycbcr_enc;
enum v4l2_quantization quantization;
enum v4l2_xfer_func xfer_func;
};
#endif /* _MTK_JPEG_CORE_H */
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