diff options
Diffstat (limited to 'drivers/staging/media/rockchip/vpu/rockchip_vpu.h')
| -rw-r--r-- | drivers/staging/media/rockchip/vpu/rockchip_vpu.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/drivers/staging/media/rockchip/vpu/rockchip_vpu.h b/drivers/staging/media/rockchip/vpu/rockchip_vpu.h new file mode 100644 index 000000000000..1ec2be483e27 --- /dev/null +++ b/drivers/staging/media/rockchip/vpu/rockchip_vpu.h @@ -0,0 +1,232 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Rockchip VPU codec driver + * + * Copyright 2018 Google LLC. + * Tomasz Figa <tfiga@chromium.org> + * + * Based on s5p-mfc driver by Samsung Electronics Co., Ltd. + * Copyright (C) 2011 Samsung Electronics Co., Ltd. + */ + +#ifndef ROCKCHIP_VPU_H_ +#define ROCKCHIP_VPU_H_ + +#include <linux/platform_device.h> +#include <linux/videodev2.h> +#include <linux/wait.h> +#include <linux/clk.h> + +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/videobuf2-core.h> +#include <media/videobuf2-dma-contig.h> + +#include "rockchip_vpu_hw.h" + +#define ROCKCHIP_VPU_MAX_CLOCKS 4 + +#define JPEG_MB_DIM 16 +#define JPEG_MB_WIDTH(w) DIV_ROUND_UP(w, JPEG_MB_DIM) +#define JPEG_MB_HEIGHT(h) DIV_ROUND_UP(h, JPEG_MB_DIM) + +struct rockchip_vpu_ctx; +struct rockchip_vpu_codec_ops; + +#define RK_VPU_CODEC_JPEG BIT(0) + +/** + * struct rockchip_vpu_variant - information about VPU hardware variant + * + * @enc_offset: Offset from VPU base to encoder registers. + * @enc_fmts: Encoder formats. + * @num_enc_fmts: Number of encoder formats. + * @codec: Supported codecs + * @codec_ops: Codec ops. + * @init: Initialize hardware. + * @vepu_irq: encoder interrupt handler + * @clk_names: array of clock names + * @num_clocks: number of clocks in the array + */ +struct rockchip_vpu_variant { + unsigned int enc_offset; + const struct rockchip_vpu_fmt *enc_fmts; + unsigned int num_enc_fmts; + unsigned int codec; + const struct rockchip_vpu_codec_ops *codec_ops; + int (*init)(struct rockchip_vpu_dev *vpu); + irqreturn_t (*vepu_irq)(int irq, void *priv); + const char *clk_names[ROCKCHIP_VPU_MAX_CLOCKS]; + int num_clocks; +}; + +/** + * enum rockchip_vpu_codec_mode - codec operating mode. + * @RK_VPU_MODE_NONE: No operating mode. Used for RAW video formats. + * @RK_VPU_MODE_JPEG_ENC: JPEG encoder. + */ +enum rockchip_vpu_codec_mode { + RK_VPU_MODE_NONE = -1, + RK_VPU_MODE_JPEG_ENC, +}; + +/** + * struct rockchip_vpu_dev - driver data + * @v4l2_dev: V4L2 device to register video devices for. + * @m2m_dev: mem2mem device associated to this device. + * @mdev: media device associated to this device. + * @vfd_enc: Video device for encoder. + * @pdev: Pointer to VPU platform device. + * @dev: Pointer to device for convenient logging using + * dev_ macros. + * @clocks: Array of clock handles. + * @base: Mapped address of VPU registers. + * @enc_base: Mapped address of VPU encoder register for convenience. + * @vpu_mutex: Mutex to synchronize V4L2 calls. + * @irqlock: Spinlock to synchronize access to data structures + * shared with interrupt handlers. + * @variant: Hardware variant-specific parameters. + * @watchdog_work: Delayed work for hardware timeout handling. + */ +struct rockchip_vpu_dev { + struct v4l2_device v4l2_dev; + struct v4l2_m2m_dev *m2m_dev; + struct media_device mdev; + struct video_device *vfd_enc; + struct platform_device *pdev; + struct device *dev; + struct clk_bulk_data clocks[ROCKCHIP_VPU_MAX_CLOCKS]; + void __iomem *base; + void __iomem *enc_base; + + struct mutex vpu_mutex; /* video_device lock */ + spinlock_t irqlock; + const struct rockchip_vpu_variant *variant; + struct delayed_work watchdog_work; +}; + +/** + * struct rockchip_vpu_ctx - Context (instance) private data. + * + * @dev: VPU driver data to which the context belongs. + * @fh: V4L2 file handler. + * + * @sequence_cap: Sequence counter for capture queue + * @sequence_out: Sequence counter for output queue + * + * @vpu_src_fmt: Descriptor of active source format. + * @src_fmt: V4L2 pixel format of active source format. + * @vpu_dst_fmt: Descriptor of active destination format. + * @dst_fmt: V4L2 pixel format of active destination format. + * + * @ctrl_handler: Control handler used to register controls. + * @jpeg_quality: User-specified JPEG compression quality. + * + * @codec_ops: Set of operations related to codec mode. + * + * @bounce_dma_addr: Bounce buffer bus address. + * @bounce_buf: Bounce buffer pointer. + * @bounce_size: Bounce buffer size. + */ +struct rockchip_vpu_ctx { + struct rockchip_vpu_dev *dev; + struct v4l2_fh fh; + + u32 sequence_cap; + u32 sequence_out; + + const struct rockchip_vpu_fmt *vpu_src_fmt; + struct v4l2_pix_format_mplane src_fmt; + const struct rockchip_vpu_fmt *vpu_dst_fmt; + struct v4l2_pix_format_mplane dst_fmt; + + struct v4l2_ctrl_handler ctrl_handler; + int jpeg_quality; + + const struct rockchip_vpu_codec_ops *codec_ops; + + dma_addr_t bounce_dma_addr; + void *bounce_buf; + size_t bounce_size; +}; + +/** + * struct rockchip_vpu_fmt - information about supported video formats. + * @name: Human readable name of the format. + * @fourcc: FourCC code of the format. See V4L2_PIX_FMT_*. + * @codec_mode: Codec mode related to this format. See + * enum rockchip_vpu_codec_mode. + * @header_size: Optional header size. Currently used by JPEG encoder. + * @max_depth: Maximum depth, for bitstream formats + * @enc_fmt: Format identifier for encoder registers. + * @frmsize: Supported range of frame sizes (only for bitstream formats). + */ +struct rockchip_vpu_fmt { + char *name; + u32 fourcc; + enum rockchip_vpu_codec_mode codec_mode; + int header_size; + int max_depth; + enum rockchip_vpu_enc_fmt enc_fmt; + struct v4l2_frmsize_stepwise frmsize; +}; + +/* Logging helpers */ + +/** + * debug - Module parameter to control level of debugging messages. + * + * Level of debugging messages can be controlled by bits of + * module parameter called "debug". Meaning of particular + * bits is as follows: + * + * bit 0 - global information: mode, size, init, release + * bit 1 - each run start/result information + * bit 2 - contents of small controls from userspace + * bit 3 - contents of big controls from userspace + * bit 4 - detail fmt, ctrl, buffer q/dq information + * bit 5 - detail function enter/leave trace information + * bit 6 - register write/read information + */ +extern int rockchip_vpu_debug; + +#define vpu_debug(level, fmt, args...) \ + do { \ + if (rockchip_vpu_debug & BIT(level)) \ + pr_info("%s:%d: " fmt, \ + __func__, __LINE__, ##args); \ + } while (0) + +#define vpu_err(fmt, args...) \ + pr_err("%s:%d: " fmt, __func__, __LINE__, ##args) + +/* Structure access helpers. */ +static inline struct rockchip_vpu_ctx *fh_to_ctx(struct v4l2_fh *fh) +{ + return container_of(fh, struct rockchip_vpu_ctx, fh); +} + +/* Register accessors. */ +static inline void vepu_write_relaxed(struct rockchip_vpu_dev *vpu, + u32 val, u32 reg) +{ + vpu_debug(6, "0x%04x = 0x%08x\n", reg / 4, val); + writel_relaxed(val, vpu->enc_base + reg); +} + +static inline void vepu_write(struct rockchip_vpu_dev *vpu, u32 val, u32 reg) +{ + vpu_debug(6, "0x%04x = 0x%08x\n", reg / 4, val); + writel(val, vpu->enc_base + reg); +} + +static inline u32 vepu_read(struct rockchip_vpu_dev *vpu, u32 reg) +{ + u32 val = readl(vpu->enc_base + reg); + + vpu_debug(6, "0x%04x = 0x%08x\n", reg / 4, val); + return val; +} + +#endif /* ROCKCHIP_VPU_H_ */ |