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-rw-r--r--drivers/media/platform/rcar-vin/rcar-vin.h163
1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h
new file mode 100644
index 0000000..31ad39a
--- /dev/null
+++ b/drivers/media/platform/rcar-vin/rcar-vin.h
@@ -0,0 +1,163 @@
+/*
+ * Driver for Renesas R-Car VIN
+ *
+ * Copyright (C) 2016 Renesas Electronics Corp.
+ * Copyright (C) 2011-2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
+ * Copyright (C) 2008 Magnus Damm
+ *
+ * Based on the soc-camera rcar_vin driver
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __RCAR_VIN__
+#define __RCAR_VIN__
+
+#include <media/v4l2-async.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-device.h>
+#include <media/videobuf2-v4l2.h>
+
+/* Number of HW buffers */
+#define HW_BUFFER_NUM 3
+
+/* Address alignment mask for HW buffers */
+#define HW_BUFFER_MASK 0x7f
+
+enum chip_id {
+ RCAR_GEN2,
+ RCAR_H1,
+ RCAR_M1,
+};
+
+/**
+ * STOPPED - No operation in progress
+ * RUNNING - Operation in progress have buffers
+ * STALLED - No operation in progress have no buffers
+ * STOPPING - Stopping operation
+ */
+enum rvin_dma_state {
+ STOPPED = 0,
+ RUNNING,
+ STALLED,
+ STOPPING,
+};
+
+/**
+ * struct rvin_source_fmt - Source information
+ * @code: Media bus format from source
+ * @width: Width from source
+ * @height: Height from source
+ */
+struct rvin_source_fmt {
+ u32 code;
+ u32 width;
+ u32 height;
+};
+
+/**
+ * struct rvin_video_format - Data format stored in memory
+ * @fourcc: Pixelformat
+ * @bpp: Bytes per pixel
+ */
+struct rvin_video_format {
+ u32 fourcc;
+ u8 bpp;
+};
+
+struct rvin_graph_entity {
+ struct device_node *node;
+ struct media_entity *entity;
+
+ struct v4l2_async_subdev asd;
+ struct v4l2_subdev *subdev;
+};
+
+/**
+ * struct rvin_dev - Renesas VIN device structure
+ * @dev: (OF) device
+ * @base: device I/O register space remapped to virtual memory
+ * @chip: type of VIN chip
+ * @mbus_cfg media bus configuration
+ *
+ * @vdev: V4L2 video device associated with VIN
+ * @v4l2_dev: V4L2 device
+ * @src_pad_idx: source pad index for media controller drivers
+ * @ctrl_handler: V4L2 control handler
+ * @notifier: V4L2 asynchronous subdevs notifier
+ * @entity: entity in the DT for subdevice
+ *
+ * @lock: protects @queue
+ * @queue: vb2 buffers queue
+ *
+ * @qlock: protects @queue_buf, @buf_list, @continuous, @sequence
+ * @state
+ * @queue_buf: Keeps track of buffers given to HW slot
+ * @buf_list: list of queued buffers
+ * @continuous: tracks if active operation is continuous or single mode
+ * @sequence: V4L2 buffers sequence number
+ * @state: keeps track of operation state
+ *
+ * @source: active format from the video source
+ * @format: active V4L2 pixel format
+ *
+ * @crop: active cropping
+ * @compose: active composing
+ */
+struct rvin_dev {
+ struct device *dev;
+ void __iomem *base;
+ enum chip_id chip;
+ struct v4l2_mbus_config mbus_cfg;
+
+ struct video_device vdev;
+ struct v4l2_device v4l2_dev;
+ int src_pad_idx;
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct v4l2_async_notifier notifier;
+ struct rvin_graph_entity entity;
+
+ struct mutex lock;
+ struct vb2_queue queue;
+
+ spinlock_t qlock;
+ struct vb2_v4l2_buffer *queue_buf[HW_BUFFER_NUM];
+ struct list_head buf_list;
+ bool continuous;
+ unsigned int sequence;
+ enum rvin_dma_state state;
+
+ struct rvin_source_fmt source;
+ struct v4l2_pix_format format;
+
+ struct v4l2_rect crop;
+ struct v4l2_rect compose;
+};
+
+#define vin_to_source(vin) vin->entity.subdev
+
+/* Debug */
+#define vin_dbg(d, fmt, arg...) dev_dbg(d->dev, fmt, ##arg)
+#define vin_info(d, fmt, arg...) dev_info(d->dev, fmt, ##arg)
+#define vin_warn(d, fmt, arg...) dev_warn(d->dev, fmt, ##arg)
+#define vin_err(d, fmt, arg...) dev_err(d->dev, fmt, ##arg)
+
+int rvin_dma_probe(struct rvin_dev *vin, int irq);
+void rvin_dma_remove(struct rvin_dev *vin);
+
+int rvin_v4l2_probe(struct rvin_dev *vin);
+void rvin_v4l2_remove(struct rvin_dev *vin);
+
+const struct rvin_video_format *rvin_format_from_pixel(u32 pixelformat);
+
+/* Cropping, composing and scaling */
+void rvin_scale_try(struct rvin_dev *vin, struct v4l2_pix_format *pix,
+ u32 width, u32 height);
+void rvin_crop_scale_comp(struct rvin_dev *vin);
+
+#endif
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