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/*
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <pc.chen@mediatek.com>
* Tiffany Lin <tiffany.lin@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _MTK_VCODEC_DRV_H_
#define _MTK_VCODEC_DRV_H_
#include <linux/platform_device.h>
#include <linux/videodev2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-core.h>
#define MTK_VCODEC_DRV_NAME "mtk_vcodec_drv"
#define MTK_VCODEC_ENC_NAME "mtk-vcodec-enc"
#define MTK_PLATFORM_STR "platform:mt8173"
#define MTK_VCODEC_MAX_PLANES 3
#define MTK_V4L2_BENCHMARK 0
#define WAIT_INTR_TIMEOUT_MS 1000
/**
* enum mtk_hw_reg_idx - MTK hw register base index
*/
enum mtk_hw_reg_idx {
VDEC_SYS,
VDEC_MISC,
VDEC_LD,
VDEC_TOP,
VDEC_CM,
VDEC_AD,
VDEC_AV,
VDEC_PP,
VDEC_HWD,
VDEC_HWQ,
VDEC_HWB,
VDEC_HWG,
NUM_MAX_VDEC_REG_BASE,
/* h264 encoder */
VENC_SYS = NUM_MAX_VDEC_REG_BASE,
/* vp8 encoder */
VENC_LT_SYS,
NUM_MAX_VCODEC_REG_BASE
};
/**
* enum mtk_instance_type - The type of an MTK Vcodec instance.
*/
enum mtk_instance_type {
MTK_INST_DECODER = 0,
MTK_INST_ENCODER = 1,
};
/**
* enum mtk_instance_state - The state of an MTK Vcodec instance.
* @MTK_STATE_FREE - default state when instance is created
* @MTK_STATE_INIT - vcodec instance is initialized
* @MTK_STATE_HEADER - vdec had sps/pps header parsed or venc
* had sps/pps header encoded
* @MTK_STATE_FLUSH - vdec is flushing. Only used by decoder
* @MTK_STATE_ABORT - vcodec should be aborted
*/
enum mtk_instance_state {
MTK_STATE_FREE = 0,
MTK_STATE_INIT = 1,
MTK_STATE_HEADER = 2,
MTK_STATE_FLUSH = 3,
MTK_STATE_ABORT = 4,
};
/**
* struct mtk_encode_param - General encoding parameters type
*/
enum mtk_encode_param {
MTK_ENCODE_PARAM_NONE = 0,
MTK_ENCODE_PARAM_BITRATE = (1 << 0),
MTK_ENCODE_PARAM_FRAMERATE = (1 << 1),
MTK_ENCODE_PARAM_INTRA_PERIOD = (1 << 2),
MTK_ENCODE_PARAM_FORCE_INTRA = (1 << 3),
MTK_ENCODE_PARAM_GOP_SIZE = (1 << 4),
};
enum mtk_fmt_type {
MTK_FMT_DEC = 0,
MTK_FMT_ENC = 1,
MTK_FMT_FRAME = 2,
};
/**
* struct mtk_video_fmt - Structure used to store information about pixelformats
*/
struct mtk_video_fmt {
u32 fourcc;
enum mtk_fmt_type type;
u32 num_planes;
};
/**
* struct mtk_codec_framesizes - Structure used to store information about
* framesizes
*/
struct mtk_codec_framesizes {
u32 fourcc;
struct v4l2_frmsize_stepwise stepwise;
};
/**
* struct mtk_q_type - Type of queue
*/
enum mtk_q_type {
MTK_Q_DATA_SRC = 0,
MTK_Q_DATA_DST = 1,
};
/**
* struct mtk_q_data - Structure used to store information about queue
*/
struct mtk_q_data {
unsigned int visible_width;
unsigned int visible_height;
unsigned int coded_width;
unsigned int coded_height;
enum v4l2_field field;
unsigned int bytesperline[MTK_VCODEC_MAX_PLANES];
unsigned int sizeimage[MTK_VCODEC_MAX_PLANES];
struct mtk_video_fmt *fmt;
};
/**
* struct mtk_enc_params - General encoding parameters
* @bitrate: target bitrate in bits per second
* @num_b_frame: number of b frames between p-frame
* @rc_frame: frame based rate control
* @rc_mb: macroblock based rate control
* @seq_hdr_mode: H.264 sequence header is encoded separately or joined
* with the first frame
* @intra_period: I frame period
* @gop_size: group of picture size, it's used as the intra frame period
* @framerate_num: frame rate numerator. ex: framerate_num=30 and
* framerate_denom=1 menas FPS is 30
* @framerate_denom: frame rate denominator. ex: framerate_num=30 and
* framerate_denom=1 menas FPS is 30
* @h264_max_qp: Max value for H.264 quantization parameter
* @h264_profile: V4L2 defined H.264 profile
* @h264_level: V4L2 defined H.264 level
* @force_intra: force/insert intra frame
*/
struct mtk_enc_params {
unsigned int bitrate;
unsigned int num_b_frame;
unsigned int rc_frame;
unsigned int rc_mb;
unsigned int seq_hdr_mode;
unsigned int intra_period;
unsigned int gop_size;
unsigned int framerate_num;
unsigned int framerate_denom;
unsigned int h264_max_qp;
unsigned int h264_profile;
unsigned int h264_level;
unsigned int force_intra;
};
/**
* struct mtk_vcodec_pm - Power management data structure
*/
struct mtk_vcodec_pm {
struct clk *vcodecpll;
struct clk *univpll_d2;
struct clk *clk_cci400_sel;
struct clk *vdecpll;
struct clk *vdec_sel;
struct clk *vencpll_d2;
struct clk *venc_sel;
struct clk *univpll1_d2;
struct clk *venc_lt_sel;
struct device *larbvdec;
struct device *larbvenc;
struct device *larbvenclt;
struct device *dev;
struct mtk_vcodec_dev *mtkdev;
};
/**
* struct mtk_vcodec_ctx - Context (instance) private data.
*
* @type: type of the instance - decoder or encoder
* @dev: pointer to the mtk_vcodec_dev of the device
* @list: link to ctx_list of mtk_vcodec_dev
* @fh: struct v4l2_fh
* @m2m_ctx: pointer to the v4l2_m2m_ctx of the context
* @q_data: store information of input and output queue
* of the context
* @id: index of the context that this structure describes
* @state: state of the context
* @param_change: indicate encode parameter type
* @enc_params: encoding parameters
* @enc_if: hoooked encoder driver interface
* @drv_handle: driver handle for specific decode/encode instance
*
* @int_cond: variable used by the waitqueue
* @int_type: type of the last interrupt
* @queue: waitqueue that can be used to wait for this context to
* finish
* @irq_status: irq status
*
* @ctrl_hdl: handler for v4l2 framework
* @encode_work: worker for the encoding
*
* @colorspace: enum v4l2_colorspace; supplemental to pixelformat
* @ycbcr_enc: enum v4l2_ycbcr_encoding, Y'CbCr encoding
* @quantization: enum v4l2_quantization, colorspace quantization
* @xfer_func: enum v4l2_xfer_func, colorspace transfer function
*/
struct mtk_vcodec_ctx {
enum mtk_instance_type type;
struct mtk_vcodec_dev *dev;
struct list_head list;
struct v4l2_fh fh;
struct v4l2_m2m_ctx *m2m_ctx;
struct mtk_q_data q_data[2];
int id;
enum mtk_instance_state state;
enum mtk_encode_param param_change;
struct mtk_enc_params enc_params;
const struct venc_common_if *enc_if;
unsigned long drv_handle;
int int_cond;
int int_type;
wait_queue_head_t queue;
unsigned int irq_status;
struct v4l2_ctrl_handler ctrl_hdl;
struct work_struct encode_work;
enum v4l2_colorspace colorspace;
enum v4l2_ycbcr_encoding ycbcr_enc;
enum v4l2_quantization quantization;
enum v4l2_xfer_func xfer_func;
};
/**
* struct mtk_vcodec_dev - driver data
* @v4l2_dev: V4L2 device to register video devices for.
* @vfd_enc: Video device for encoder.
*
* @m2m_dev_enc: m2m device for encoder.
* @plat_dev: platform device
* @vpu_plat_dev: mtk vpu platform device
* @ctx_list: list of struct mtk_vcodec_ctx
* @irqlock: protect data access by irq handler and work thread
* @curr_ctx: The context that is waiting for codec hardware
*
* @reg_base: Mapped address of MTK Vcodec registers.
*
* @id_counter: used to identify current opened instance
* @num_instances: counter of active MTK Vcodec instances
*
* @encode_workqueue: encode work queue
*
* @int_cond: used to identify interrupt condition happen
* @int_type: used to identify what kind of interrupt condition happen
* @dev_mutex: video_device lock
* @queue: waitqueue for waiting for completion of device commands
*
* @enc_irq: h264 encoder irq resource
* @enc_lt_irq: vp8 encoder irq resource
*
* @enc_mutex: encoder hardware lock.
*
* @pm: power management control
* @dec_capability: used to identify decode capability, ex: 4k
* @enc_capability: used to identify encode capability
*/
struct mtk_vcodec_dev {
struct v4l2_device v4l2_dev;
struct video_device *vfd_enc;
struct v4l2_m2m_dev *m2m_dev_enc;
struct platform_device *plat_dev;
struct platform_device *vpu_plat_dev;
struct list_head ctx_list;
spinlock_t irqlock;
struct mtk_vcodec_ctx *curr_ctx;
void __iomem *reg_base[NUM_MAX_VCODEC_REG_BASE];
unsigned long id_counter;
int num_instances;
struct workqueue_struct *encode_workqueue;
int int_cond;
int int_type;
struct mutex dev_mutex;
wait_queue_head_t queue;
int enc_irq;
int enc_lt_irq;
struct mutex enc_mutex;
struct mtk_vcodec_pm pm;
unsigned int dec_capability;
unsigned int enc_capability;
};
static inline struct mtk_vcodec_ctx *fh_to_ctx(struct v4l2_fh *fh)
{
return container_of(fh, struct mtk_vcodec_ctx, fh);
}
static inline struct mtk_vcodec_ctx *ctrl_to_ctx(struct v4l2_ctrl *ctrl)
{
return container_of(ctrl->handler, struct mtk_vcodec_ctx, ctrl_hdl);
}
#endif /* _MTK_VCODEC_DRV_H_ */