diff options
Diffstat (limited to 'drivers/staging/media/ipu3/ipu3.h')
| -rw-r--r-- | drivers/staging/media/ipu3/ipu3.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/drivers/staging/media/ipu3/ipu3.h b/drivers/staging/media/ipu3/ipu3.h new file mode 100644 index 000000000000..04fc99f47ebb --- /dev/null +++ b/drivers/staging/media/ipu3/ipu3.h @@ -0,0 +1,168 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2018 Intel Corporation */ + +#ifndef __IPU3_H +#define __IPU3_H + +#include <linux/iova.h> +#include <linux/pci.h> + +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/videobuf2-dma-sg.h> + +#include "ipu3-css.h" + +#define IMGU_NAME "ipu3-imgu" + +/* + * The semantics of the driver is that whenever there is a buffer available in + * master queue, the driver queues a buffer also to all other active nodes. + * If user space hasn't provided a buffer to all other video nodes first, + * the driver gets an internal dummy buffer and queues it. + */ +#define IMGU_QUEUE_MASTER IPU3_CSS_QUEUE_IN +#define IMGU_QUEUE_FIRST_INPUT IPU3_CSS_QUEUE_OUT +#define IMGU_MAX_QUEUE_DEPTH (2 + 2) + +#define IMGU_NODE_IN 0 /* Input RAW image */ +#define IMGU_NODE_PARAMS 1 /* Input parameters */ +#define IMGU_NODE_OUT 2 /* Main output for still or video */ +#define IMGU_NODE_VF 3 /* Preview */ +#define IMGU_NODE_STAT_3A 4 /* 3A statistics */ +#define IMGU_NODE_NUM 5 + +#define file_to_intel_ipu3_node(__file) \ + container_of(video_devdata(__file), struct imgu_video_device, vdev) + +#define IPU3_INPUT_MIN_WIDTH 0U +#define IPU3_INPUT_MIN_HEIGHT 0U +#define IPU3_INPUT_MAX_WIDTH 5120U +#define IPU3_INPUT_MAX_HEIGHT 38404U +#define IPU3_OUTPUT_MIN_WIDTH 2U +#define IPU3_OUTPUT_MIN_HEIGHT 2U +#define IPU3_OUTPUT_MAX_WIDTH 4480U +#define IPU3_OUTPUT_MAX_HEIGHT 34004U + +struct ipu3_vb2_buffer { + /* Public fields */ + struct vb2_v4l2_buffer vbb; /* Must be the first field */ + + /* Private fields */ + struct list_head list; +}; + +struct imgu_buffer { + struct ipu3_vb2_buffer vid_buf; /* Must be the first field */ + struct ipu3_css_buffer css_buf; + struct ipu3_css_map map; +}; + +struct imgu_node_mapping { + unsigned int css_queue; + const char *name; +}; + +/** + * struct imgu_video_device + * each node registers as video device and maintains its + * own vb2_queue. + */ +struct imgu_video_device { + const char *name; + bool output; + bool enabled; + struct v4l2_format vdev_fmt; /* Currently set format */ + + /* Private fields */ + struct video_device vdev; + struct media_pad vdev_pad; + struct v4l2_mbus_framefmt pad_fmt; + struct vb2_queue vbq; + struct list_head buffers; + /* Protect vb2_queue and vdev structs*/ + struct mutex lock; + atomic_t sequence; + unsigned int id; + unsigned int pipe; +}; + +struct imgu_v4l2_subdev { + unsigned int pipe; + struct v4l2_subdev subdev; + struct media_pad subdev_pads[IMGU_NODE_NUM]; + struct { + struct v4l2_rect eff; /* effective resolution */ + struct v4l2_rect bds; /* bayer-domain scaled resolution*/ + struct v4l2_rect gdc; /* gdc output resolution */ + } rect; + struct v4l2_ctrl_handler ctrl_handler; + struct v4l2_ctrl *ctrl; + atomic_t running_mode; + bool active; +}; + +struct imgu_media_pipe { + unsigned int pipe; + + /* Internally enabled queues */ + struct { + struct ipu3_css_map dmap; + struct ipu3_css_buffer dummybufs[IMGU_MAX_QUEUE_DEPTH]; + } queues[IPU3_CSS_QUEUES]; + struct imgu_video_device nodes[IMGU_NODE_NUM]; + bool queue_enabled[IMGU_NODE_NUM]; + struct media_pipeline pipeline; + struct imgu_v4l2_subdev imgu_sd; +}; + +/* + * imgu_device -- ImgU (Imaging Unit) driver + */ +struct imgu_device { + struct pci_dev *pci_dev; + void __iomem *base; + + /* Public fields, fill before registering */ + unsigned int buf_struct_size; + bool streaming; /* Public read only */ + + struct imgu_media_pipe imgu_pipe[IMGU_MAX_PIPE_NUM]; + + /* Private fields */ + struct v4l2_device v4l2_dev; + struct media_device media_dev; + struct v4l2_file_operations v4l2_file_ops; + + /* MMU driver for css */ + struct ipu3_mmu_info *mmu; + struct iova_domain iova_domain; + + /* css - Camera Sub-System */ + struct ipu3_css css; + + /* + * Coarse-grained lock to protect + * vid_buf.list and css->queue + */ + struct mutex lock; + /* Forbit streaming and buffer queuing during system suspend. */ + atomic_t qbuf_barrier; + /* Indicate if system suspend take place while imgu is streaming. */ + bool suspend_in_stream; + /* Used to wait for FW buffer queue drain. */ + wait_queue_head_t buf_drain_wq; +}; + +unsigned int imgu_node_to_queue(unsigned int node); +unsigned int imgu_map_node(struct imgu_device *imgu, unsigned int css_queue); +int imgu_queue_buffers(struct imgu_device *imgu, bool initial, + unsigned int pipe); + +int imgu_v4l2_register(struct imgu_device *dev); +int imgu_v4l2_unregister(struct imgu_device *dev); +void imgu_v4l2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state); + +int imgu_s_stream(struct imgu_device *imgu, int enable); + +#endif |