diff options
Diffstat (limited to 'drivers/staging/media/meson/vdec/vdec.h')
| -rw-r--r-- | drivers/staging/media/meson/vdec/vdec.h | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/drivers/staging/media/meson/vdec/vdec.h b/drivers/staging/media/meson/vdec/vdec.h new file mode 100644 index 000000000000..d811e7976519 --- /dev/null +++ b/drivers/staging/media/meson/vdec/vdec.h @@ -0,0 +1,267 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2018 BayLibre, SAS + * Author: Maxime Jourdan <mjourdan@baylibre.com> + */ + +#ifndef __MESON_VDEC_CORE_H_ +#define __MESON_VDEC_CORE_H_ + +#include <linux/irqreturn.h> +#include <linux/regmap.h> +#include <linux/list.h> +#include <media/videobuf2-v4l2.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <linux/soc/amlogic/meson-canvas.h> + +#include "vdec_platform.h" + +/* 32 buffers in 3-plane YUV420 */ +#define MAX_CANVAS (32 * 3) + +struct amvdec_buffer { + struct list_head list; + struct vb2_buffer *vb; +}; + +/** + * struct amvdec_timestamp - stores a src timestamp along with a VIFIFO offset + * + * @list: used to make lists out of this struct + * @ts: timestamp + * @offset: offset in the VIFIFO where the associated packet was written + */ +struct amvdec_timestamp { + struct list_head list; + u64 ts; + u32 offset; +}; + +struct amvdec_session; + +/** + * struct amvdec_core - device parameters, singleton + * + * @dos_base: DOS memory base address + * @esparser_base: PARSER memory base address + * @regmap_ao: regmap for the AO bus + * @dev: core device + * @dev_dec: decoder device + * @platform: platform-specific data + * @canvas: canvas provider reference + * @dos_parser_clk: DOS_PARSER clock + * @dos_clk: DOS clock + * @vdec_1_clk: VDEC_1 clock + * @vdec_hevc_clk: VDEC_HEVC clock + * @esparser_reset: RESET for the PARSER + * @vdec_dec: video device for the decoder + * @v4l2_dev: v4l2 device + * @cur_sess: current decoding session + */ +struct amvdec_core { + void __iomem *dos_base; + void __iomem *esparser_base; + struct regmap *regmap_ao; + + struct device *dev; + struct device *dev_dec; + const struct vdec_platform *platform; + + struct meson_canvas *canvas; + + struct clk *dos_parser_clk; + struct clk *dos_clk; + struct clk *vdec_1_clk; + struct clk *vdec_hevc_clk; + + struct reset_control *esparser_reset; + + struct video_device *vdev_dec; + struct v4l2_device v4l2_dev; + + struct amvdec_session *cur_sess; + struct mutex lock; /* video device lock */ +}; + +/** + * struct amvdec_ops - vdec operations + * + * @start: mandatory call when the vdec needs to initialize + * @stop: mandatory call when the vdec needs to stop + * @conf_esparser: mandatory call to let the vdec configure the ESPARSER + * @vififo_level: mandatory call to get the current amount of data + * in the VIFIFO + * @use_offsets: mandatory call. Returns 1 if the VDEC supports vififo offsets + */ +struct amvdec_ops { + int (*start)(struct amvdec_session *sess); + int (*stop)(struct amvdec_session *sess); + void (*conf_esparser)(struct amvdec_session *sess); + u32 (*vififo_level)(struct amvdec_session *sess); +}; + +/** + * struct amvdec_codec_ops - codec operations + * + * @start: mandatory call when the codec needs to initialize + * @stop: mandatory call when the codec needs to stop + * @load_extended_firmware: optional call to load additional firmware bits + * @num_pending_bufs: optional call to get the number of dst buffers on hold + * @can_recycle: optional call to know if the codec is ready to recycle + * a dst buffer + * @recycle: optional call to tell the codec to recycle a dst buffer. Must go + * in pair with @can_recycle + * @drain: optional call if the codec has a custom way of draining + * @eos_sequence: optional call to get an end sequence to send to esparser + * for flush. Mutually exclusive with @drain. + * @isr: mandatory call when the ISR triggers + * @threaded_isr: mandatory call for the threaded ISR + */ +struct amvdec_codec_ops { + int (*start)(struct amvdec_session *sess); + int (*stop)(struct amvdec_session *sess); + int (*load_extended_firmware)(struct amvdec_session *sess, + const u8 *data, u32 len); + u32 (*num_pending_bufs)(struct amvdec_session *sess); + int (*can_recycle)(struct amvdec_core *core); + void (*recycle)(struct amvdec_core *core, u32 buf_idx); + void (*drain)(struct amvdec_session *sess); + void (*resume)(struct amvdec_session *sess); + const u8 * (*eos_sequence)(u32 *len); + irqreturn_t (*isr)(struct amvdec_session *sess); + irqreturn_t (*threaded_isr)(struct amvdec_session *sess); +}; + +/** + * struct amvdec_format - describes one of the OUTPUT (src) format supported + * + * @pixfmt: V4L2 pixel format + * @min_buffers: minimum amount of CAPTURE (dst) buffers + * @max_buffers: maximum amount of CAPTURE (dst) buffers + * @max_width: maximum picture width supported + * @max_height: maximum picture height supported + * @flags: enum flags associated with this pixfmt + * @vdec_ops: the VDEC operations that support this format + * @codec_ops: the codec operations that support this format + * @firmware_path: Path to the firmware that supports this format + * @pixfmts_cap: list of CAPTURE pixel formats available with pixfmt + */ +struct amvdec_format { + u32 pixfmt; + u32 min_buffers; + u32 max_buffers; + u32 max_width; + u32 max_height; + u32 flags; + + struct amvdec_ops *vdec_ops; + struct amvdec_codec_ops *codec_ops; + + char *firmware_path; + u32 pixfmts_cap[4]; +}; + +enum amvdec_status { + STATUS_STOPPED, + STATUS_RUNNING, + STATUS_NEEDS_RESUME, +}; + +/** + * struct amvdec_session - decoding session parameters + * + * @core: reference to the vdec core struct + * @fh: v4l2 file handle + * @m2m_dev: v4l2 m2m device + * @m2m_ctx: v4l2 m2m context + * @ctrl_handler: V4L2 control handler + * @ctrl_min_buf_capture: V4L2 control V4L2_CID_MIN_BUFFERS_FOR_CAPTURE + * @fmt_out: vdec pixel format for the OUTPUT queue + * @pixfmt_cap: V4L2 pixel format for the CAPTURE queue + * @width: current picture width + * @height: current picture height + * @colorspace: current colorspace + * @ycbcr_enc: current ycbcr_enc + * @quantization: current quantization + * @xfer_func: current transfer function + * @pixelaspect: Pixel Aspect Ratio reported by the decoder + * @esparser_queued_bufs: number of buffers currently queued into ESPARSER + * @esparser_queue_work: work struct for the ESPARSER to process src buffers + * @streamon_cap: stream on flag for capture queue + * @streamon_out: stream on flag for output queue + * @sequence_cap: capture sequence counter + * @should_stop: flag set if userspace signaled EOS via command + * or empty buffer + * @keyframe_found: flag set once a keyframe has been parsed + * @canvas_alloc: array of all the canvas IDs allocated + * @canvas_num: number of canvas IDs allocated + * @vififo_vaddr: virtual address for the VIFIFO + * @vififo_paddr: physical address for the VIFIFO + * @vififo_size: size of the VIFIFO dma alloc + * @bufs_recycle: list of buffers that need to be recycled + * @bufs_recycle_lock: lock for the bufs_recycle list + * @recycle_thread: task struct for the recycling thread + * @timestamps: chronological list of src timestamps + * @ts_spinlock: spinlock for the timestamps list + * @last_irq_jiffies: tracks last time the vdec triggered an IRQ + * @status: current decoding status + * @priv: codec private data + */ +struct amvdec_session { + struct amvdec_core *core; + + struct v4l2_fh fh; + struct v4l2_m2m_dev *m2m_dev; + struct v4l2_m2m_ctx *m2m_ctx; + struct v4l2_ctrl_handler ctrl_handler; + struct v4l2_ctrl *ctrl_min_buf_capture; + struct mutex lock; /* cap & out queues lock */ + + const struct amvdec_format *fmt_out; + u32 pixfmt_cap; + + u32 width; + u32 height; + u32 colorspace; + u8 ycbcr_enc; + u8 quantization; + u8 xfer_func; + + struct v4l2_fract pixelaspect; + + atomic_t esparser_queued_bufs; + struct work_struct esparser_queue_work; + + unsigned int streamon_cap, streamon_out; + unsigned int sequence_cap; + unsigned int should_stop; + unsigned int keyframe_found; + unsigned int num_dst_bufs; + + u8 canvas_alloc[MAX_CANVAS]; + u32 canvas_num; + + void *vififo_vaddr; + dma_addr_t vififo_paddr; + u32 vififo_size; + + struct list_head bufs_recycle; + struct mutex bufs_recycle_lock; /* bufs_recycle list lock */ + struct task_struct *recycle_thread; + + struct list_head timestamps; + spinlock_t ts_spinlock; /* timestamp list lock */ + + u64 last_irq_jiffies; + u32 last_offset; + u32 wrap_count; + u32 fw_idx_to_vb2_idx[32]; + + enum amvdec_status status; + void *priv; +}; + +u32 amvdec_get_output_size(struct amvdec_session *sess); + +#endif |