diff options
Diffstat (limited to 'drivers/media/platform/rcar-vin/rcar-vin.h')
| -rw-r--r-- | drivers/media/platform/rcar-vin/rcar-vin.h | 163 |
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 000000000000..31ad39a39937 --- /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 |