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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
* Rick Chang <rick.chang@mediatek.com>
*/
#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_COMP_MAX 3
#define MTK_JPEG_FMT_FLAG_DEC_OUTPUT BIT(0)
#define MTK_JPEG_FMT_FLAG_DEC_CAPTURE BIT(1)
#define MTK_JPEG_MIN_WIDTH 32U
#define MTK_JPEG_MIN_HEIGHT 32U
#define MTK_JPEG_MAX_WIDTH 65535U
#define MTK_JPEG_MAX_HEIGHT 65535U
#define MTK_JPEG_DEFAULT_SIZEIMAGE (1 * 1024 * 1024)
#define MTK_JPEG_HW_TIMEOUT_MSEC 1000
/**
* enum mtk_jpeg_ctx_state - states of the context state machine
* @MTK_JPEG_INIT: current state is initialized
* @MTK_JPEG_RUNNING: current state is running
* @MTK_JPEG_SOURCE_CHANGE: current state is source resolution change
*/
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
* @job_timeout_work: IRQ timeout structure
*/
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 delayed_work job_timeout_work;
};
/**
* 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
* @pix_mp: multiplanar format
*/
struct mtk_jpeg_q_data {
struct mtk_jpeg_fmt *fmt;
struct v4l2_pix_format_mplane pix_mp;
};
/**
* 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
* @state: state of the context
*/
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;
};
#endif /* _MTK_JPEG_CORE_H */
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