/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright ( C ) 2012 Samsung Electronics Co . , Ltd .
*/
#ifndef FIMC_LITE_H_
#define FIMC_LITE_H_
#include <linux/sizes.h>
#include <linux/io.h>
#include <linux/irqreturn.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/videodev2.h>
#include <media/media-entity.h>
#include <media/videobuf2-v4l2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-mediabus.h>
#include <media/drv-intf/exynos-fimc.h>
#define FIMC_LITE_DRV_NAME "exynos-fimc-lite"
#define FLITE_CLK_NAME "flite"
#define FIMC_LITE_MAX_DEVS 3
#define FLITE_REQ_BUFS_MIN 2
#define FLITE_DEFAULT_WIDTH 640
#define FLITE_DEFAULT_HEIGHT 480
/* Bit index definitions for struct fimc_lite::state */
enum {
ST_FLITE_LPM,
ST_FLITE_PENDING,
ST_FLITE_RUN,
ST_FLITE_STREAM,
ST_FLITE_SUSPENDED,
ST_FLITE_OFF,
ST_FLITE_IN_USE,
ST_FLITE_CONFIG,
ST_SENSOR_STREAM,
};
#define FLITE_SD_PAD_SINK 0
#define FLITE_SD_PAD_SOURCE_DMA 1
#define FLITE_SD_PAD_SOURCE_ISP 2
#define FLITE_SD_PADS_NUM 3
/**
* struct flite_drvdata - FIMC - LITE IP variant data structure
* @ max_width : maximum camera interface input width in pixels
* @ max_height : maximum camera interface input height in pixels
* @ out_width_align : minimum output width alignment in pixels
* @ win_hor_offs_align : minimum camera interface crop window horizontal
* offset alignment in pixels
* @ out_hor_offs_align : minimum output DMA compose rectangle horizontal
* offset alignment in pixels
* @ max_dma_bufs : number of output DMA buffer start address registers
* @ num_instances : total number of FIMC - LITE IP instances available
*/
struct flite_drvdata {
unsigned short max_width;
unsigned short max_height;
unsigned short out_width_align;
unsigned short win_hor_offs_align;
unsigned short out_hor_offs_align;
unsigned short max_dma_bufs;
unsigned short num_instances;
};
struct fimc_lite_events {
unsigned int data_overflow;
};
#define FLITE_MAX_PLANES 1
/**
* struct flite_frame - source / target frame properties
* @ f_width : full pixel width
* @ f_height : full pixel height
* @ rect : crop / composition rectangle
* @ fmt : pointer to pixel format description data structure
*/
struct flite_frame {
u16 f_width;
u16 f_height;
struct v4l2_rect rect;
const struct fimc_fmt *fmt;
};
/**
* struct flite_buffer - video buffer structure
* @ vb : vb2 buffer
* @ list : list head for the buffers queue
* @ addr : DMA buffer start address
* @ index : DMA start address register ' s index
*/
struct flite_buffer {
struct vb2_v4l2_buffer vb;
struct list_head list;
dma_addr_t addr;
unsigned short index;
};
/**
* struct fimc_lite - fimc lite structure
* @ pdev : pointer to FIMC - LITE platform device
* @ dd : SoC specific driver data structure
* @ ve : exynos video device entity structure
* @ v4l2_dev : pointer to top the level v4l2_device
* @ fh : v4l2 file handle
* @ subdev : FIMC - LITE subdev
* @ vd_pad : media ( sink ) pad for the capture video node
* @ subdev_pads : the subdev media pads
* @ sensor : sensor subdev attached to FIMC - LITE directly or through MIPI - CSIS
* @ ctrl_handler : v4l2 control handler
* @ test_pattern : test pattern controls
* @ index : FIMC - LITE platform device index
* @ slock : spinlock protecting this data structure and the hw registers
* @ lock : mutex serializing video device and the subdev operations
* @ clock : FIMC - LITE gate clock
* @ regs : memory mapped io registers
* @ irq_queue : interrupt handler waitqueue
* @ payload : image size in bytes ( w x h x bpp )
* @ inp_frame : camera input frame structure
* @ out_frame : DMA output frame structure
* @ out_path : output data path ( DMA or FIFO )
* @ source_subdev_grp_id : source subdev group id
* @ state : driver state flags
* @ pending_buf_q : pending buffers queue head
* @ active_buf_q : the queue head of buffers scheduled in hardware
* @ vb_queue : vb2 buffers queue
* @ buf_index : helps to keep track of the DMA start address register index
* @ frame_count : the captured frames counter
* @ reqbufs_count : the number of buffers requested with REQBUFS ioctl
* @ events : event info
* @ streaming : is streaming in progress ?
*/
struct fimc_lite {
struct platform_device *pdev;
struct flite_drvdata *dd;
struct exynos_video_entity ve;
struct v4l2_device *v4l2_dev;
struct v4l2_fh fh;
struct v4l2_subdev subdev;
struct media_pad vd_pad;
struct media_pad subdev_pads[FLITE_SD_PADS_NUM];
struct v4l2_subdev *sensor;
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl *test_pattern;
int index;
struct mutex lock;
spinlock_t slock;
struct clk *clock;
void __iomem *regs;
wait_queue_head_t irq_queue;
unsigned long payload[FLITE_MAX_PLANES];
struct flite_frame inp_frame;
struct flite_frame out_frame;
atomic_t out_path;
unsigned int source_subdev_grp_id;
unsigned long state;
struct list_head pending_buf_q;
struct list_head active_buf_q;
struct vb2_queue vb_queue;
unsigned short buf_index;
unsigned int frame_count;
unsigned int reqbufs_count;
struct fimc_lite_events events;
bool streaming;
};
static inline bool fimc_lite_active(struct fimc_lite *fimc)
{
unsigned long flags;
bool ret;
spin_lock_irqsave(&fimc->slock, flags);
ret = fimc->state & (1 << ST_FLITE_RUN) ||
fimc->state & (1 << ST_FLITE_PENDING);
spin_unlock_irqrestore(&fimc->slock, flags);
return ret;
}
static inline void fimc_lite_active_queue_add(struct fimc_lite *dev,
struct flite_buffer *buf)
{
list_add_tail(&buf->list, &dev->active_buf_q);
}
static inline struct flite_buffer *fimc_lite_active_queue_pop(
struct fimc_lite *dev)
{
struct flite_buffer *buf = list_entry(dev->active_buf_q.next,
struct flite_buffer, list);
list_del(&buf->list);
return buf;
}
static inline void fimc_lite_pending_queue_add(struct fimc_lite *dev,
struct flite_buffer *buf)
{
list_add_tail(&buf->list, &dev->pending_buf_q);
}
static inline struct flite_buffer *fimc_lite_pending_queue_pop(
struct fimc_lite *dev)
{
struct flite_buffer *buf = list_entry(dev->pending_buf_q.next,
struct flite_buffer, list);
list_del(&buf->list);
return buf;
}
#endif /* FIMC_LITE_H_ */
Messung V0.5 in Prozent C=94 H=91 G=92
¤ Dauer der Verarbeitung: 0.6 Sekunden
¤
*© Formatika GbR, Deutschland