diff options
Diffstat (limited to 'drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h')
| -rw-r--r-- | drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h | 388 |
1 files changed, 388 insertions, 0 deletions
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h new file mode 100644 index 000000000..3cffb381a --- /dev/null +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h @@ -0,0 +1,388 @@ +/* +* 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> +#include "mtk_vcodec_util.h" + +#define MTK_VCODEC_DRV_NAME "mtk_vcodec_drv" +#define MTK_VCODEC_DEC_NAME "mtk-vcodec-dec" +#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 *vdec_bus_clk_src; + struct clk *vencpll; + + 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 vdec_pic_info - picture size information + * @pic_w: picture width + * @pic_h: picture height + * @buf_w: picture buffer width (64 aligned up from pic_w) + * @buf_h: picture buffer heiht (64 aligned up from pic_h) + * @y_bs_sz: Y bitstream size + * @c_bs_sz: CbCr bitstream size + * @y_len_sz: additional size required to store decompress information for y + * plane + * @c_len_sz: additional size required to store decompress information for cbcr + * plane + * E.g. suppose picture size is 176x144, + * buffer size will be aligned to 176x160. + */ +struct vdec_pic_info { + unsigned int pic_w; + unsigned int pic_h; + unsigned int buf_w; + unsigned int buf_h; + unsigned int y_bs_sz; + unsigned int c_bs_sz; + unsigned int y_len_sz; + unsigned int c_len_sz; +}; + +/** + * 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 + * @dec_if: hooked decoder driver interface + * @enc_if: hoooked encoder driver interface + * @drv_handle: driver handle for specific decode/encode instance + * + * @picinfo: store picture info after header parsing + * @dpb_size: store dpb count after header parsing + * @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 + * @decode_work: worker for the decoding + * @encode_work: worker for the encoding + * @last_decoded_picinfo: pic information get from latest decode + * @empty_flush_buf: a fake size-0 capture buffer that indicates flush + * + * @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 + * @lock: protect variables accessed by V4L2 threads and worker thread such as + * mtk_video_dec_buf. + */ +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 vdec_common_if *dec_if; + const struct venc_common_if *enc_if; + unsigned long drv_handle; + + struct vdec_pic_info picinfo; + int dpb_size; + + int int_cond; + int int_type; + wait_queue_head_t queue; + unsigned int irq_status; + + struct v4l2_ctrl_handler ctrl_hdl; + struct work_struct decode_work; + struct work_struct encode_work; + struct vdec_pic_info last_decoded_picinfo; + struct mtk_video_dec_buf *empty_flush_buf; + + enum v4l2_colorspace colorspace; + enum v4l2_ycbcr_encoding ycbcr_enc; + enum v4l2_quantization quantization; + enum v4l2_xfer_func xfer_func; + + int decoded_frame_cnt; + struct mutex lock; + +}; + +/** + * struct mtk_vcodec_dev - driver data + * @v4l2_dev: V4L2 device to register video devices for. + * @vfd_dec: Video device for decoder + * @vfd_enc: Video device for encoder. + * + * @m2m_dev_dec: m2m device for decoder + * @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 + * + * @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 + * + * @dec_irq: decoder irq resource + * @enc_irq: h264 encoder irq resource + * @enc_lt_irq: vp8 encoder irq resource + * + * @dec_mutex: decoder hardware lock + * @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_dec; + struct video_device *vfd_enc; + + struct v4l2_m2m_dev *m2m_dev_dec; + 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; + + struct workqueue_struct *decode_workqueue; + struct workqueue_struct *encode_workqueue; + int int_cond; + int int_type; + struct mutex dev_mutex; + wait_queue_head_t queue; + + int dec_irq; + int enc_irq; + int enc_lt_irq; + + struct mutex dec_mutex; + 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_ */ |