--- /dev/null
+/*
+ * 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-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mediabus.h>
+#include <media/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
+ * @paddr: DMA buffer start address
+ * @index: DMA start address register's index
+ */
+struct flite_buffer {
+ struct vb2_buffer vb;
+ struct list_head list;
+ dma_addr_t paddr;
+ 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
+ * @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
+ * @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
+ * @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
+ */
+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 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;
+ 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_ */
Code Review / kvmfornfv.git / blobdiff