195 lines
5.4 KiB
C
195 lines
5.4 KiB
C
/*
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* Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
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*
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* Copyright (C) 2013 Samsung Electronics Co., Ltd.
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*
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* Authors: Sylwester Nawrocki <s.nawrocki@samsung.com>
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* Younghwan Joo <yhwan.joo@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef FIMC_ISP_H_
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#define FIMC_ISP_H_
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/sched.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#include <linux/videodev2.h>
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#include <media/media-entity.h>
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#include <media/videobuf2-core.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-mediabus.h>
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#include <media/exynos-fimc.h>
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extern int fimc_isp_debug;
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#define isp_dbg(level, dev, fmt, arg...) \
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v4l2_dbg(level, fimc_isp_debug, dev, fmt, ## arg)
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/* FIXME: revisit these constraints */
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#define FIMC_ISP_SINK_WIDTH_MIN (16 + 8)
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#define FIMC_ISP_SINK_HEIGHT_MIN (12 + 8)
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#define FIMC_ISP_SOURCE_WIDTH_MIN 8
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#define FIMC_ISP_SOURCE_HEIGHT_MIN 8
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#define FIMC_ISP_CAC_MARGIN_WIDTH 16
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#define FIMC_ISP_CAC_MARGIN_HEIGHT 12
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#define FIMC_ISP_SINK_WIDTH_MAX (4000 - 16)
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#define FIMC_ISP_SINK_HEIGHT_MAX (4000 + 12)
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#define FIMC_ISP_SOURCE_WIDTH_MAX 4000
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#define FIMC_ISP_SOURCE_HEIGHT_MAX 4000
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#define FIMC_ISP_NUM_FORMATS 3
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#define FIMC_ISP_REQ_BUFS_MIN 2
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#define FIMC_ISP_REQ_BUFS_MAX 32
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#define FIMC_ISP_SD_PAD_SINK 0
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#define FIMC_ISP_SD_PAD_SRC_FIFO 1
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#define FIMC_ISP_SD_PAD_SRC_DMA 2
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#define FIMC_ISP_SD_PADS_NUM 3
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#define FIMC_ISP_MAX_PLANES 1
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/**
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* struct fimc_isp_frame - source/target frame properties
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* @width: full image width
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* @height: full image height
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* @rect: crop/composition rectangle
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*/
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struct fimc_isp_frame {
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u16 width;
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u16 height;
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struct v4l2_rect rect;
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};
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struct fimc_isp_ctrls {
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struct v4l2_ctrl_handler handler;
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/* Auto white balance */
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struct v4l2_ctrl *auto_wb;
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/* Auto ISO control cluster */
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struct {
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struct v4l2_ctrl *auto_iso;
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struct v4l2_ctrl *iso;
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};
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/* Adjust - contrast */
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struct v4l2_ctrl *contrast;
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/* Adjust - saturation */
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struct v4l2_ctrl *saturation;
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/* Adjust - sharpness */
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struct v4l2_ctrl *sharpness;
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/* Adjust - brightness */
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struct v4l2_ctrl *brightness;
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/* Adjust - hue */
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struct v4l2_ctrl *hue;
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/* Auto/manual exposure */
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struct v4l2_ctrl *auto_exp;
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/* Manual exposure value */
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struct v4l2_ctrl *exposure;
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/* AE/AWB lock/unlock */
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struct v4l2_ctrl *aewb_lock;
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/* Exposure metering mode */
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struct v4l2_ctrl *exp_metering;
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/* AFC */
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struct v4l2_ctrl *afc;
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/* ISP image effect */
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struct v4l2_ctrl *colorfx;
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};
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struct isp_video_buf {
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struct vb2_buffer vb;
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dma_addr_t dma_addr[FIMC_ISP_MAX_PLANES];
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unsigned int index;
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};
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#define to_isp_video_buf(_b) container_of(_b, struct isp_video_buf, vb)
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#define FIMC_ISP_MAX_BUFS 4
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/**
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* struct fimc_is_video - fimc-is video device structure
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* @vdev: video_device structure
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* @type: video device type (CAPTURE/OUTPUT)
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* @pad: video device media (sink) pad
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* @pending_buf_q: pending buffers queue head
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* @active_buf_q: a queue head of buffers scheduled in hardware
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* @vb_queue: vb2 buffer queue
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* @active_buf_count: number of video buffers scheduled in hardware
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* @frame_count: counter of frames dequeued to user space
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* @reqbufs_count: number of buffers requested with REQBUFS ioctl
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* @format: current pixel format
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*/
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struct fimc_is_video {
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struct exynos_video_entity ve;
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enum v4l2_buf_type type;
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struct media_pad pad;
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struct list_head pending_buf_q;
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struct list_head active_buf_q;
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struct vb2_queue vb_queue;
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unsigned int reqbufs_count;
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unsigned int buf_count;
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unsigned int buf_mask;
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unsigned int frame_count;
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int streaming;
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struct isp_video_buf *buffers[FIMC_ISP_MAX_BUFS];
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const struct fimc_fmt *format;
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struct v4l2_pix_format_mplane pixfmt;
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};
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/* struct fimc_isp:state bit definitions */
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#define ST_ISP_VID_CAP_BUF_PREP 0
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#define ST_ISP_VID_CAP_STREAMING 1
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/**
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* struct fimc_isp - FIMC-IS ISP data structure
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* @pdev: pointer to FIMC-IS platform device
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* @alloc_ctx: videobuf2 memory allocator context
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* @subdev: ISP v4l2_subdev
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* @subdev_pads: the ISP subdev media pads
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* @test_pattern: test pattern controls
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* @ctrls: v4l2 controls structure
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* @video_lock: mutex serializing video device and the subdev operations
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* @cac_margin_x: horizontal CAC margin in pixels
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* @cac_margin_y: vertical CAC margin in pixels
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* @state: driver state flags
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* @video_capture: the ISP block video capture device
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*/
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struct fimc_isp {
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struct platform_device *pdev;
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struct vb2_alloc_ctx *alloc_ctx;
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struct v4l2_subdev subdev;
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struct media_pad subdev_pads[FIMC_ISP_SD_PADS_NUM];
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struct v4l2_mbus_framefmt src_fmt;
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struct v4l2_mbus_framefmt sink_fmt;
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struct v4l2_ctrl *test_pattern;
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struct fimc_isp_ctrls ctrls;
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struct mutex video_lock;
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struct mutex subdev_lock;
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unsigned int cac_margin_x;
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unsigned int cac_margin_y;
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unsigned long state;
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struct fimc_is_video video_capture;
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};
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#define ctrl_to_fimc_isp(_ctrl) \
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container_of(ctrl->handler, struct fimc_isp, ctrls.handler)
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struct fimc_is;
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int fimc_isp_subdev_create(struct fimc_isp *isp);
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void fimc_isp_subdev_destroy(struct fimc_isp *isp);
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void fimc_isp_irq_handler(struct fimc_is *is);
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int fimc_is_create_controls(struct fimc_isp *isp);
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int fimc_is_delete_controls(struct fimc_isp *isp);
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const struct fimc_fmt *fimc_isp_find_format(const u32 *pixelformat,
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const u32 *mbus_code, int index);
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#endif /* FIMC_ISP_H_ */
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