diff options
Diffstat (limited to 'drivers/media/platform/renesas/vsp1/vsp1_pipe.h')
| -rw-r--r-- | drivers/media/platform/renesas/vsp1/vsp1_pipe.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_pipe.h b/drivers/media/platform/renesas/vsp1/vsp1_pipe.h new file mode 100644 index 000000000000..7f623b8cbe5c --- /dev/null +++ b/drivers/media/platform/renesas/vsp1/vsp1_pipe.h @@ -0,0 +1,189 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * vsp1_pipe.h -- R-Car VSP1 Pipeline + * + * Copyright (C) 2013-2015 Renesas Electronics Corporation + * + * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) + */ +#ifndef __VSP1_PIPE_H__ +#define __VSP1_PIPE_H__ + +#include <linux/dynamic_debug.h> +#include <linux/kref.h> +#include <linux/list.h> +#include <linux/spinlock.h> +#include <linux/wait.h> + +#include <media/media-entity.h> + +struct vsp1_dl_list; +struct vsp1_rwpf; + +/* + * struct vsp1_format_info - VSP1 video format description + * @fourcc: V4L2 pixel format FCC identifier + * @mbus: media bus format code + * @hwfmt: VSP1 hardware format + * @swap: swap register control + * @planes: number of planes + * @bpp: bits per pixel + * @swap_yc: the Y and C components are swapped (Y comes before C) + * @swap_uv: the U and V components are swapped (V comes before U) + * @hsub: horizontal subsampling factor + * @vsub: vertical subsampling factor + * @alpha: has an alpha channel + */ +struct vsp1_format_info { + u32 fourcc; + unsigned int mbus; + unsigned int hwfmt; + unsigned int swap; + unsigned int planes; + unsigned int bpp[3]; + bool swap_yc; + bool swap_uv; + unsigned int hsub; + unsigned int vsub; + bool alpha; +}; + +enum vsp1_pipeline_state { + VSP1_PIPELINE_STOPPED, + VSP1_PIPELINE_RUNNING, + VSP1_PIPELINE_STOPPING, +}; + +/* + * struct vsp1_partition - A description of a slice for the partition algorithm + * @rpf: The RPF partition window configuration + * @uds_sink: The UDS input partition window configuration + * @uds_source: The UDS output partition window configuration + * @sru: The SRU partition window configuration + * @wpf: The WPF partition window configuration + */ +struct vsp1_partition { + struct v4l2_rect rpf[VSP1_MAX_RPF]; + struct v4l2_rect uds_sink; + struct v4l2_rect uds_source; + struct v4l2_rect sru; + struct v4l2_rect wpf; +}; + +/* + * struct vsp1_pipeline - A VSP1 hardware pipeline + * @pipe: the media pipeline + * @irqlock: protects the pipeline state + * @state: current state + * @wq: wait queue to wait for state change completion + * @frame_end: frame end interrupt handler + * @lock: protects the pipeline use count and stream count + * @kref: pipeline reference count + * @stream_count: number of streaming video nodes + * @buffers_ready: bitmask of RPFs and WPFs with at least one buffer available + * @sequence: frame sequence number + * @num_inputs: number of RPFs + * @inputs: array of RPFs in the pipeline (indexed by RPF index) + * @output: WPF at the output of the pipeline + * @brx: BRx entity, if present + * @hgo: HGO entity, if present + * @hgt: HGT entity, if present + * @lif: LIF entity, if present + * @uds: UDS entity, if present + * @uds_input: entity at the input of the UDS, if the UDS is present + * @entities: list of entities in the pipeline + * @stream_config: cached stream configuration for video pipelines + * @configured: when false the @stream_config shall be written to the hardware + * @interlaced: True when the pipeline is configured in interlaced mode + * @partitions: The number of partitions used to process one frame + * @part_table: The pre-calculated partitions used by the pipeline + */ +struct vsp1_pipeline { + struct media_pipeline pipe; + + spinlock_t irqlock; + enum vsp1_pipeline_state state; + wait_queue_head_t wq; + + void (*frame_end)(struct vsp1_pipeline *pipe, unsigned int completion); + + struct mutex lock; + struct kref kref; + unsigned int stream_count; + unsigned int buffers_ready; + unsigned int sequence; + + unsigned int num_inputs; + struct vsp1_rwpf *inputs[VSP1_MAX_RPF]; + struct vsp1_rwpf *output; + struct vsp1_entity *brx; + struct vsp1_entity *hgo; + struct vsp1_entity *hgt; + struct vsp1_entity *iif; + struct vsp1_entity *lif; + struct vsp1_entity *uds; + struct vsp1_entity *uds_input; + + /* + * The order of this list must be identical to the order of the entities + * in the pipeline, as it is assumed by the partition algorithm that we + * can walk this list in sequence. + */ + struct list_head entities; + + struct vsp1_dl_body *stream_config; + bool configured; + bool interlaced; + + unsigned int partitions; + struct vsp1_partition *part_table; + + u32 underrun_count; +}; + +void vsp1_pipeline_reset(struct vsp1_pipeline *pipe); +void vsp1_pipeline_init(struct vsp1_pipeline *pipe); + +void __vsp1_pipeline_dump(struct _ddebug *, struct vsp1_pipeline *pipe, + const char *msg); + +#if defined(CONFIG_DYNAMIC_DEBUG) || \ + (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) +#define vsp1_pipeline_dump(pipe, msg) \ + _dynamic_func_call("vsp1_pipeline_dump()", __vsp1_pipeline_dump, pipe, msg) +#elif defined(DEBUG) +#define vsp1_pipeline_dump(pipe, msg) \ + __vsp1_pipeline_dump(NULL, pipe, msg) +#else +#define vsp1_pipeline_dump(pipe, msg) \ +({ \ + if (0) \ + __vsp1_pipeline_dump(NULL, pipe, msg); \ +}) +#endif + +void vsp1_pipeline_run(struct vsp1_pipeline *pipe); +bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe); +int vsp1_pipeline_stop(struct vsp1_pipeline *pipe); +bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe); + +void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe); + +void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe, + struct vsp1_dl_body *dlb, + unsigned int alpha); + +void vsp1_pipeline_calculate_partition(struct vsp1_pipeline *pipe, + struct vsp1_partition *partition, + unsigned int div_size, + unsigned int index); + +const struct vsp1_format_info *vsp1_get_format_info(struct vsp1_device *vsp1, + u32 fourcc); +const struct vsp1_format_info * +vsp1_get_format_info_by_index(struct vsp1_device *vsp1, unsigned int index, + u32 code); +void vsp1_adjust_color_space(u32 code, u32 *colorspace, u8 *xfer_func, + u8 *encoding, u8 *quantization); + +#endif /* __VSP1_PIPE_H__ */ |