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- /*
- * Copyright (C) 2012 Samsung Electronics Co., Ltd.
- *
- * 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 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-core.h>
- #include <media/v4l2-device.h>
- #include <media/v4l2-mediabus.h>
- #include <media/s5p_fimc.h>
- #include "fimc-core.h"
- #define FIMC_LITE_DRV_NAME "exynos-fimc-lite"
- #define FLITE_CLK_NAME "flite"
- #define FIMC_LITE_MAX_DEVS 2
- #define FLITE_REQ_BUFS_MIN 2
- /* 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_variant {
- 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;
- };
- struct flite_drvdata {
- struct flite_variant *variant[FIMC_LITE_MAX_DEVS];
- };
- #define fimc_lite_get_drvdata(_pdev) \
- ((struct flite_drvdata *) platform_get_device_id(_pdev)->driver_data)
- 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
- */
- struct flite_frame {
- u16 f_width;
- u16 f_height;
- struct v4l2_rect rect;
- };
- /**
- * struct flite_buffer - video buffer structure
- * @vb: vb2 buffer
- * @list: list head for the buffers queue
- * @paddr: precalculated physical address
- */
- struct flite_buffer {
- struct vb2_buffer vb;
- struct list_head list;
- dma_addr_t paddr;
- };
- /**
- * struct fimc_lite - fimc lite structure
- * @pdev: pointer to FIMC-LITE platform device
- * @variant: variant information for this IP
- * @v4l2_dev: pointer to top the level v4l2_device
- * @vfd: video device node
- * @fh: v4l2 file handle
- * @alloc_ctx: videobuf2 memory allocator context
- * @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
- * @pipeline: video capture pipeline data structure
- * @pipeline_ops: media pipeline ops for the video node driver
- * @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
- * @fmt: pointer to color format description structure
- * @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
- * @active_buf_count: number of video buffers scheduled in hardware
- * @frame_count: the captured frames counter
- * @reqbufs_count: the number of buffers requested with REQBUFS ioctl
- * @ref_count: driver's private reference counter
- */
- struct fimc_lite {
- struct platform_device *pdev;
- struct flite_variant *variant;
- struct v4l2_device *v4l2_dev;
- struct video_device vfd;
- struct v4l2_fh fh;
- struct vb2_alloc_ctx *alloc_ctx;
- 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;
- u32 index;
- struct fimc_pipeline pipeline;
- const struct fimc_pipeline_ops *pipeline_ops;
- struct mutex lock;
- spinlock_t slock;
- struct clk *clock;
- void __iomem *regs;
- wait_queue_head_t irq_queue;
- const struct fimc_fmt *fmt;
- 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 int frame_count;
- unsigned int reqbufs_count;
- int ref_count;
- struct fimc_lite_events events;
- };
- 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_ */
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