--- /dev/null
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Authors: Fabien Dessenne <fabien.dessenne@st.com> for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/clk.h>
+#include <linux/ktime.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mem2mem.h>
+
+#include <media/videobuf2-dma-contig.h>
+
+#define BDISP_NAME "bdisp"
+
+/*
+ * Max nb of nodes in node-list:
+ * - 2 nodes to handle wide 4K pictures
+ * - 2 nodes to handle two planes (Y & CbCr) */
+#define MAX_OUTPUT_PLANES 2
+#define MAX_VERTICAL_STRIDES 2
+#define MAX_NB_NODE (MAX_OUTPUT_PLANES * MAX_VERTICAL_STRIDES)
+
+/* struct bdisp_ctrls - bdisp control set
+ * @hflip: horizontal flip
+ * @vflip: vertical flip
+ */
+struct bdisp_ctrls {
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *vflip;
+};
+
+/**
+ * struct bdisp_fmt - driver's internal color format data
+ * @pixelformat:fourcc code for this format
+ * @nb_planes: number of planes (ex: [0]=RGB/Y - [1]=Cb/Cr, ...)
+ * @bpp: bits per pixel (general)
+ * @bpp_plane0: byte per pixel for the 1st plane
+ * @w_align: width alignment in pixel (multiple of)
+ * @h_align: height alignment in pixel (multiple of)
+ */
+struct bdisp_fmt {
+ u32 pixelformat;
+ u8 nb_planes;
+ u8 bpp;
+ u8 bpp_plane0;
+ u8 w_align;
+ u8 h_align;
+};
+
+/**
+ * struct bdisp_frame - frame properties
+ *
+ * @width: frame width (including padding)
+ * @height: frame height (including padding)
+ * @fmt: pointer to frame format descriptor
+ * @field: frame / field type
+ * @bytesperline: stride of the 1st plane
+ * @sizeimage: image size in bytes
+ * @colorspace: colorspace
+ * @crop: crop area
+ * @paddr: image physical addresses per plane ([0]=RGB/Y - [1]=Cb/Cr, ...)
+ */
+struct bdisp_frame {
+ u32 width;
+ u32 height;
+ const struct bdisp_fmt *fmt;
+ enum v4l2_field field;
+ u32 bytesperline;
+ u32 sizeimage;
+ enum v4l2_colorspace colorspace;
+ struct v4l2_rect crop;
+ dma_addr_t paddr[4];
+};
+
+/**
+ * struct bdisp_request - bdisp request
+ *
+ * @src: source frame properties
+ * @dst: destination frame properties
+ * @hflip: horizontal flip
+ * @vflip: vertical flip
+ * @nb_req: number of run request
+ */
+struct bdisp_request {
+ struct bdisp_frame src;
+ struct bdisp_frame dst;
+ unsigned int hflip:1;
+ unsigned int vflip:1;
+ int nb_req;
+};
+
+/**
+ * struct bdisp_ctx - device context data
+ *
+ * @src: source frame properties
+ * @dst: destination frame properties
+ * @state: flags to keep track of user configuration
+ * @hflip: horizontal flip
+ * @vflip: vertical flip
+ * @bdisp_dev: the device this context applies to
+ * @node: node array
+ * @node_paddr: node physical address array
+ * @fh: v4l2 file handle
+ * @ctrl_handler: v4l2 controls handler
+ * @bdisp_ctrls: bdisp control set
+ * @ctrls_rdy: true if the control handler is initialized
+ */
+struct bdisp_ctx {
+ struct bdisp_frame src;
+ struct bdisp_frame dst;
+ u32 state;
+ unsigned int hflip:1;
+ unsigned int vflip:1;
+ struct bdisp_dev *bdisp_dev;
+ struct bdisp_node *node[MAX_NB_NODE];
+ dma_addr_t node_paddr[MAX_NB_NODE];
+ struct v4l2_fh fh;
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct bdisp_ctrls bdisp_ctrls;
+ bool ctrls_rdy;
+};
+
+/**
+ * struct bdisp_m2m_device - v4l2 memory-to-memory device data
+ *
+ * @vdev: video device node for v4l2 m2m mode
+ * @m2m_dev: v4l2 m2m device data
+ * @ctx: hardware context data
+ * @refcnt: reference counter
+ */
+struct bdisp_m2m_device {
+ struct video_device *vdev;
+ struct v4l2_m2m_dev *m2m_dev;
+ struct bdisp_ctx *ctx;
+ int refcnt;
+};
+
+/**
+ * struct bdisp_dbg - debug info
+ *
+ * @debugfs_entry: debugfs
+ * @copy_node: array of last used nodes
+ * @copy_request: last bdisp request
+ * @hw_start: start time of last HW request
+ * @last_duration: last HW processing duration in microsecs
+ * @min_duration: min HW processing duration in microsecs
+ * @max_duration: max HW processing duration in microsecs
+ * @tot_duration: total HW processing duration in microsecs
+ */
+struct bdisp_dbg {
+ struct dentry *debugfs_entry;
+ struct bdisp_node *copy_node[MAX_NB_NODE];
+ struct bdisp_request copy_request;
+ ktime_t hw_start;
+ s64 last_duration;
+ s64 min_duration;
+ s64 max_duration;
+ s64 tot_duration;
+};
+
+/**
+ * struct bdisp_dev - abstraction for bdisp entity
+ *
+ * @v4l2_dev: v4l2 device
+ * @vdev: video device
+ * @pdev: platform device
+ * @dev: device
+ * @lock: mutex protecting this data structure
+ * @slock: spinlock protecting this data structure
+ * @id: device index
+ * @m2m: memory-to-memory V4L2 device information
+ * @state: flags used to synchronize m2m and capture mode operation
+ * @alloc_ctx: videobuf2 memory allocator context
+ * @clock: IP clock
+ * @regs: registers
+ * @irq_queue: interrupt handler waitqueue
+ * @work_queue: workqueue to handle timeouts
+ * @timeout_work: IRQ timeout structure
+ * @dbg: debug info
+ */
+struct bdisp_dev {
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ struct platform_device *pdev;
+ struct device *dev;
+ spinlock_t slock;
+ struct mutex lock;
+ u16 id;
+ struct bdisp_m2m_device m2m;
+ unsigned long state;
+ struct vb2_alloc_ctx *alloc_ctx;
+ struct clk *clock;
+ void __iomem *regs;
+ wait_queue_head_t irq_queue;
+ struct workqueue_struct *work_queue;
+ struct delayed_work timeout_work;
+ struct bdisp_dbg dbg;
+};
+
+void bdisp_hw_free_nodes(struct bdisp_ctx *ctx);
+int bdisp_hw_alloc_nodes(struct bdisp_ctx *ctx);
+void bdisp_hw_free_filters(struct device *dev);
+int bdisp_hw_alloc_filters(struct device *dev);
+int bdisp_hw_reset(struct bdisp_dev *bdisp);
+int bdisp_hw_get_and_clear_irq(struct bdisp_dev *bdisp);
+int bdisp_hw_update(struct bdisp_ctx *ctx);
+
+void bdisp_debugfs_remove(struct bdisp_dev *bdisp);
+int bdisp_debugfs_create(struct bdisp_dev *bdisp);
+void bdisp_dbg_perf_begin(struct bdisp_dev *bdisp);
+void bdisp_dbg_perf_end(struct bdisp_dev *bdisp);
Code Review / kvmfornfv.git / blobdiff