/* SPDX-License-Identifier: GPL-2.0 */
/*
* i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
*
* Copyright 2018-2019 NXP
*/
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fh.h>
#ifndef _MXC_JPEG_CORE_H
#define _MXC_JPEG_CORE_H
#define MXC_JPEG_NAME "mxc-jpeg"
#define MXC_JPEG_FMT_TYPE_ENC 0
#define MXC_JPEG_FMT_TYPE_RAW 1
#define MXC_JPEG_DEFAULT_WIDTH 1280
#define MXC_JPEG_DEFAULT_HEIGHT 720
#define MXC_JPEG_DEFAULT_PFMT V4L2_PIX_FMT_BGR24
#define MXC_JPEG_MIN_WIDTH 64
#define MXC_JPEG_MIN_HEIGHT 64
#define MXC_JPEG_MAX_WIDTH 0x2000
#define MXC_JPEG_MAX_HEIGHT 0x2000
#define MXC_JPEG_MAX_LINE 0x8000
#define MXC_JPEG_MAX_CFG_STREAM 0x1000
#define MXC_JPEG_H_ALIGN 3
#define MXC_JPEG_W_ALIGN 3
#define MXC_JPEG_MAX_SIZEIMAGE 0xFFFFFC00
#define MXC_JPEG_MAX_PLANES 2
enum mxc_jpeg_enc_state {
MXC_JPEG_ENCODING = 0, /* jpeg encode phase */
MXC_JPEG_ENC_CONF = 1, /* jpeg encoder config phase */
};
enum mxc_jpeg_mode {
MXC_JPEG_DECODE = 0, /* jpeg decode mode */
MXC_JPEG_ENCODE = 1, /* jpeg encode mode */
};
/**
* struct mxc_jpeg_fmt - driver's internal color format data
* @name: format description
* @fourcc: fourcc code, 0 if not applicable
* @subsampling: subsampling of jpeg components
* @nc: number of color components
* @depth: number of bits per pixel
* @mem_planes: number of memory planes (1 for packed formats)
* @comp_planes:number of component planes, which includes the alpha plane (1 to 4).
* @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
* @precision: jpeg sample precision
* @is_rgb: is an RGB pixel format
*/
struct mxc_jpeg_fmt {
const char *name;
u32 fourcc;
enum v4l2_jpeg_chroma_subsampling subsampling;
int nc;
int depth;
int mem_planes;
int comp_planes;
int h_align;
int v_align;
u32 flags;
u8 precision;
u8 is_rgb;
};
struct mxc_jpeg_desc {
u32 next_descpt_ptr;
u32 buf_base0;
u32 buf_base1;
u32 line_pitch;
u32 stm_bufbase;
u32 stm_bufsize;
u32 imgsize;
u32 stm_ctrl;
} __packed;
struct mxc_jpeg_q_data {
const struct mxc_jpeg_fmt *fmt;
u32 sizeimage[MXC_JPEG_MAX_PLANES];
u32 bytesperline[MXC_JPEG_MAX_PLANES];
int w;
int w_adjusted;
int h;
int h_adjusted;
unsigned int sequence;
struct v4l2_rect crop;
};
struct mxc_jpeg_ctx {
struct mxc_jpeg_dev *mxc_jpeg;
struct mxc_jpeg_q_data out_q;
struct mxc_jpeg_q_data cap_q;
struct v4l2_fh fh;
enum mxc_jpeg_enc_state enc_state;
int slot;
unsigned int source_change;
bool need_initial_source_change_evt;
bool header_parsed;
struct v4l2_ctrl_handler ctrl_handler;
u8 jpeg_quality;
struct delayed_work task_timer;
};
struct mxc_jpeg_slot_data {
int slot;
bool used;
struct mxc_jpeg_desc *desc; // enc/dec descriptor
struct mxc_jpeg_desc *cfg_desc; // configuration descriptor
void *cfg_stream_vaddr; // configuration bitstream virtual address
unsigned int cfg_stream_size;
dma_addr_t desc_handle;
dma_addr_t cfg_desc_handle; // configuration descriptor dma address
dma_addr_t cfg_stream_handle; // configuration bitstream dma address
};
struct mxc_jpeg_dev {
spinlock_t hw_lock; /* hardware access lock */
unsigned int mode;
struct mutex lock; /* v4l2 ioctls serialization */
struct clk_bulk_data *clks;
int num_clks;
struct platform_device *pdev;
struct device *dev;
void __iomem *base_reg;
struct v4l2_device v4l2_dev;
struct v4l2_m2m_dev *m2m_dev;
struct video_device *dec_vdev;
struct mxc_jpeg_slot_data slot_data;
int num_domains;
struct device **pd_dev;
struct device_link **pd_link;
};
/**
* struct mxc_jpeg_sof_comp - JPEG Start Of Frame component fields
* @id: component id
* @v: vertical sampling
* @h: horizontal sampling
* @quantization_table_no: id of quantization table
*/
struct mxc_jpeg_sof_comp {
u8 id;
u8 v :4;
u8 h :4;
u8 quantization_table_no;
} __packed;
#define MXC_JPEG_MAX_COMPONENTS 4
/**
* struct mxc_jpeg_sof - JPEG Start Of Frame marker fields
* @length: Start of Frame length
* @precision: precision (bits per pixel per color component)
* @height: image height
* @width: image width
* @components_no: number of color components
* @comp: component fields for each color component
*/
struct mxc_jpeg_sof {
u16 length;
u8 precision;
u16 height, width;
u8 components_no;
struct mxc_jpeg_sof_comp comp[MXC_JPEG_MAX_COMPONENTS];
} __packed;
/**
* struct mxc_jpeg_sos_comp - JPEG Start Of Scan component fields
* @id: component id
* @huffman_table_no: id of the Huffman table
*/
struct mxc_jpeg_sos_comp {
u8 id; /*component id*/
u8 huffman_table_no;
} __packed;
/**
* struct mxc_jpeg_sos - JPEG Start Of Scan marker fields
* @length: Start of Frame length
* @components_no: number of color components
* @comp: SOS component fields for each color component
* @ignorable_bytes: ignorable bytes
*/
struct mxc_jpeg_sos {
u16 length;
u8 components_no;
struct mxc_jpeg_sos_comp comp[MXC_JPEG_MAX_COMPONENTS];
u8 ignorable_bytes[3];
} __packed;
#endif
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