+CC Shik and Keiichi
On Wed, Feb 20, 2019 at 4:53 PM Jerry-ch Chen
<Jerry-Ch.chen@xxxxxxxxxxxx> wrote:
>
> This patch adds the driver of Face Detection (FD) unit in
> Mediatek camera system, providing face detection function.
>
> The mtk-isp directory will contain drivers for multiple IP
> blocks found in Mediatek ISP system. It will include ISP Pass 1
> driver (CAM), sensor interface driver, DIP driver and face
> detection driver.
>
> Signed-off-by: Jerry-ch Chen <jerry-ch.chen@xxxxxxxxxxxx>
> ---
> drivers/media/platform/mtk-isp/Makefile | 16 +
> drivers/media/platform/mtk-isp/fd/Makefile | 38 +
> drivers/media/platform/mtk-isp/fd/mtk_fd-core.h | 157 +++
> drivers/media/platform/mtk-isp/fd/mtk_fd-ctx.h | 299 ++++++
> .../platform/mtk-isp/fd/mtk_fd-dev-ctx-core.c | 912 +++++++++++++++++
> drivers/media/platform/mtk-isp/fd/mtk_fd-dev.c | 355 +++++++
> drivers/media/platform/mtk-isp/fd/mtk_fd-dev.h | 198 ++++
> .../media/platform/mtk-isp/fd/mtk_fd-smem-drv.c | 452 +++++++++
> drivers/media/platform/mtk-isp/fd/mtk_fd-smem.h | 25 +
> .../media/platform/mtk-isp/fd/mtk_fd-v4l2-util.c | 1046 ++++++++++++++++++++
> drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.c | 114 +++
> drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.h | 36 +
> drivers/media/platform/mtk-isp/fd/mtk_fd.c | 730 ++++++++++++++
> drivers/media/platform/mtk-isp/fd/mtk_fd.h | 127 +++
> 14 files changed, 4505 insertions(+)
> create mode 100644 drivers/media/platform/mtk-isp/Makefile
> create mode 100644 drivers/media/platform/mtk-isp/fd/Makefile
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-core.h
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-ctx.h
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-dev-ctx-core.c
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-dev.c
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-dev.h
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-smem-drv.c
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-smem.h
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2-util.c
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.c
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.h
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd.c
> create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd.h
>
> diff --git a/drivers/media/platform/mtk-isp/Makefile b/drivers/media/platform/mtk-isp/Makefile
> new file mode 100644
> index 0000000..5e3a9aa
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/Makefile
> @@ -0,0 +1,16 @@
> +#
> +# Copyright (C) 2018 MediaTek Inc.
> +#
> +# 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.
> +#
> +
> +ifeq ($(CONFIG_VIDEO_MEDIATEK_FD_SUPPORT),y)
> +obj-y += fd/
> +endif
> diff --git a/drivers/media/platform/mtk-isp/fd/Makefile b/drivers/media/platform/mtk-isp/fd/Makefile
> new file mode 100644
> index 0000000..ac168c1
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/Makefile
> @@ -0,0 +1,38 @@
> +#
> +# Copyright (C) 2018 MediaTek Inc.
> +#
> +# This program is free software: you can redistribute it and/or modify
> +# it under the terms of the GNU General Public License version 2 as
> +# published by the Free Software Foundation.
> +#
> +# This program is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> +# GNU General Public License for more details.
> +#
> +
> +$(info "FD: makefile start srctree: $(srctree)")
> +ccflags-y += -I$(srctree)/drivers/media/platform/mtk-vpu
> +ccflags-y += -I$(srctree)/drivers/media/platform/mtk-isp/fd
> +#ccflags-y += -I$(srctree)/drivers/media/platform/mtk-isp/common
> +
> +obj-y += mtk_fd.o
> +obj-y += mtk_fd-v4l2.o
> +
> +# To provide alloc context managing memory shared
> +# between CPU and FD coprocessor
> +mtk_fd_smem-objs := \
> +mtk_fd-smem-drv.o
> +
> +obj-y += mtk_fd_smem.o
> +
> +# Utilits to provide frame-based streaming model
> +# with v4l2 user interfaces
> +mtk_fd_util-objs := \
> +mtk_fd-dev.o \
> +mtk_fd-v4l2-util.o \
> +mtk_fd-dev-ctx-core.o
> +
> +obj-y += mtk_fd_util.o
> +
> +$(info "FD: makefile end")
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd-core.h b/drivers/media/platform/mtk-isp/fd/mtk_fd-core.h
> new file mode 100644
> index 0000000..a7c1e1d
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd-core.h
> @@ -0,0 +1,157 @@
> +/* SPDX-License-Identifier: GPL-2.0
> + * Copyright (C) 2015 MediaTek Inc.
> + *
> + * 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_FD_CORE_H__
> +#define __MTK_FD_CORE_H__
> +
> +#define SIG_ERESTARTSYS 512
> +
> +#ifndef CONFIG_MTK_CLKMGR
> +#include <linux/clk.h>
> +#endif
> +
> +#ifdef CONFIG_MTK_CLKMGR
> +#include <mach/mt_clkmgr.h>
> +#endif
> +
> +#include "mtk_fd-dev.h"
> +#include "mtk_fd-ctx.h"
> +
> +#include <linux/io.h>
> +
> +#define FD_WR32(v, a) \
> +do { \
> + __raw_writel((v), (void __force __iomem *)((a))); \
> + mb(); /* ensure written */ \
> +} while (0)
> +
> +#define FD_RD32(addr) ioread32((void *)addr)
> +
> +#define FD_INT_EN (0x15c)
> +#define FD_INT (0x168)
> +#define FD_RESULT (0x178)
> +#define FD_IRQ_MASK (0x001)
> +
> +#define RS_BUF_SIZE_MAX (2288788)
> +#define VA_OFFSET (0xffff000000000000)
> +
> +enum fd_irq {
> + FD_IRQ_IDX = 0,
> + FD_IRQ_IDX_NUM
> +};
> +
> +enum fd_state {
> + FD_INI,
> + FD_ENQ,
> + FD_CBD,
> +};
> +
> +enum stream_stat {
> + STREAM_OFF,
> + STREAM_ON,
> +};
> +
> +struct ipi_fd_enq_param {
> + u8 source_img_fmt;
> + struct fd_buffer output_addr;
> + struct fd_buffer src_y;
> + struct fd_buffer src_uv;
> + struct fd_buffer config_addr;
> +} __packed;
> +
> +struct fd_manager_ctx {
> + struct fd_buffer learn_data_buf[2][LEARNDATA_NUM];
> + struct fd_buffer fd_config;
> + struct fd_buffer rs_config;
> + struct fd_buffer fd_result;
> + struct fd_buffer rs_result;
> + struct fd_buffer src_img;
> +} __packed;
> +
> +struct mtk_fd_drv_ctx {
> + struct sg_table sgtable;
> + u32 frame_id;
> + struct fd_buffer rs_result;
> + struct fd_buffer scp_mem;
> + struct platform_device *vpu_pdev;
> +
> + atomic_t fd_enque_cnt;
> + atomic_t fd_stream_cnt;
> + atomic_t fd_user_cnt;
> +};
> +
> +struct mtk_fd_drv_dev {
> + struct platform_device *pdev;
> +
> + dev_t fd_devno;
> + struct cdev fd_cdev;
> + struct class *fd_class;
> + struct mtk_fd_drv_ctx fd_ctx;
> +
> + struct device *larb_dev;
> + struct clk *fd_clk;
> + enum fd_state state;
> + enum stream_stat streaming;
> +
> + wait_queue_head_t wq;
> + u32 fd_irq_result;
> +
> + void __iomem *fd_base;
> +};
> +
> +struct mtk_isp_fd_drv_data {
> + struct mtk_fd_dev fd_dev;
> + struct mtk_fd_drv_dev fd_hw_dev;
> +} __packed;
> +
> +static inline struct mtk_fd_drv_dev *get_fd_hw_device(struct device *dev)
> +{
> + struct mtk_isp_fd_drv_data *drv_data =
> + dev_get_drvdata(dev);
> + if (drv_data)
> + return &drv_data->fd_hw_dev;
> + else
> + return NULL;
> +}
> +
> +#define mtk_fd_us_to_jiffies(us) \
> + ((((unsigned long)(us) / 1000) * HZ + 512) >> 10)
> +
> +#define mtk_fd_hw_dev_to_drv(__fd_hw_dev) \
> + container_of(__fd_hw_dev, \
> + struct mtk_isp_fd_drv_data, fd_hw_dev)
> +
> +#define mtk_fd_ctx_to_drv(__fd_ctx) \
> + container_of(__fd_ctx, \
> + struct mtk_isp_fd_drv_data, fd_hw_dev.fd_ctx)
> +
> +enum fd_scp_cmd {
> + FD_CMD_INIT,
> + FD_CMD_ENQ,
> + FD_CMD_EXIT,
> +};
> +
> +enum fd_clk {
> + clock_off = 0,
> + clock_on,
> +};
> +
> +struct ipi_message {
> + u8 cmd_id;
> + union {
> + struct fd_buffer fd_manager;
> + struct v4l2_fd_param fd_param;
> + };
> +} __packed;
> +
> +#endif/*__MTK_FD_CORE_H__*/
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd-ctx.h b/drivers/media/platform/mtk-isp/fd/mtk_fd-ctx.h
> new file mode 100644
> index 0000000..d78a3af
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd-ctx.h
> @@ -0,0 +1,299 @@
> +/* SPDX-License-Identifier: GPL-2.0
> + * Copyright (c) 2018 MediaTek Inc.
> + * Author: Frederic Chen <frederic.chen@xxxxxxxxxxxx>
> + *
> + * 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_FD_CTX_H__
> +#define __MTK_FD_CTX_H__
> +
> +#include <linux/types.h>
> +#include <linux/videodev2.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/videobuf2-core.h>
> +#include <media/v4l2-subdev.h>
> +
> +#define MTK_FD_CTX_QUEUES (16)
> +#define MTK_FD_CTX_FRAME_BUNDLE_BUFFER_MAX (MTK_FD_CTX_QUEUES)
> +#define MTK_FD_CTX_DESC_MAX (MTK_FD_CTX_QUEUES)
> +
> +#define MTK_FD_CTX_MODE_DEBUG_OFF (0)
> +#define MTK_FD_CTX_MODE_DEBUG_BYPASS_JOB_TRIGGER (1)
> +#define MTK_FD_CTX_MODE_DEBUG_BYPASS_ALL (2)
> +
> +#define MTK_FD_GET_CTX_ID_FROM_SEQUENCE(sequence) \
> + ((sequence) >> 16 & 0x0000FFFF)
> +
> +#define MTK_FD_CTX_META_BUF_DEFAULT_SIZE (1110 * 1024)
> +
> +struct mtk_fd_ctx;
> +struct mtk_fd_ctx_finish_param;
> +
> +/**
> + * Attributes setup by device context owner
> + */
> +struct mtk_fd_ctx_queue_desc {
> + int id;
> + /* id of the context queue */
> + char *name;
> + /* Will be exported to media entity name */
> + int capture;
> + /**
> + * 1 for capture queue (device to user),
> + * 0 for output queue (from user to device)
> + */
> + int image;
> + /* 1 for image, 0 for meta data */
> + unsigned int dma_port;
> + /*The dma port associated to the buffer*/
> + struct mtk_fd_ctx_format *fmts;
> + int num_fmts;
> + /* Default format of this queue */
> + int default_fmt_idx;
> +};
> +
> +/**
> + * Supported format and the information used for
> + * size calculation
> + */
> +struct mtk_fd_ctx_meta_format {
> + u32 dataformat;
> + u32 max_buffer_size;
> + u8 flags;
> +};
> +
> +/**
> + * MDP module's private format definitation
> + * (the same as struct mdp_format)
> + * It will be removed and changed to MDP's external interface
> + * after the integration with MDP module.
> + */
> +struct mtk_fd_ctx_mdp_format {
> + u32 pixelformat;
> + u32 mdp_color;
> + u8 depth[VIDEO_MAX_PLANES];
> + u8 row_depth[VIDEO_MAX_PLANES];
> + u8 num_planes;
> + u8 walign;
> + u8 halign;
> + u8 salign;
> + u32 flags;
> +};
> +
> +struct mtk_fd_ctx_format {
> + union {
> + struct mtk_fd_ctx_meta_format meta;
> + struct mtk_fd_ctx_mdp_format img;
> + } fmt;
> +};
> +
> +union mtk_v4l2_fmt {
> + struct v4l2_pix_format_mplane pix_mp;
> + struct v4l2_meta_format meta;
> +};
> +
> +/* Attributes setup by device context owner */
> +struct mtk_fd_ctx_queues_setting {
> + int master;
> + /* The master input node to trigger the frame data enqueue */
> + struct mtk_fd_ctx_queue_desc *output_queue_descs;
> + int total_output_queues;
> + struct mtk_fd_ctx_queue_desc *capture_queue_descs;
> + int total_capture_queues;
> +};
> +
> +struct mtk_fd_ctx_queue_attr {
> + int master;
> + int input_offset;
> + int total_num;
> +};
> +
> +/**
> + * Video node context. Since we use
> + * mtk_fd_ctx_frame_bundle to manage enqueued
> + * buffers by frame now, we don't use bufs filed of
> + * mtk_fd_ctx_queue now
> + */
> +struct mtk_fd_ctx_queue {
> + union mtk_v4l2_fmt fmt;
> + struct mtk_fd_ctx_format *ctx_fmt;
> +
> + unsigned int width_pad;
> + /* bytesperline, reserved */
> + struct mtk_fd_ctx_queue_desc desc;
> + unsigned int buffer_usage;
> + /* Current buffer usage of the queue */
> + int rotation;
> + struct list_head bufs;
> + /* Reserved, not used now */
> +};
> +
> +enum mtk_fd_ctx_frame_bundle_state {
> + MTK_FD_CTX_FRAME_NEW,
> + /* Not allocated */
> + MTK_FD_CTX_FRAME_PREPARED,
> + /* Allocated but has not be processed */
> + MTK_FD_CTX_FRAME_PROCESSING,
> + /* Queued, waiting to be filled */
> +};
> +
> +/**
> + * The definiation is compatible with FD driver's state definiation
> + * currently and will be decoupled after further integration
> + */
> +enum mtk_fd_ctx_frame_data_state {
> + MTK_FD_CTX_FRAME_DATA_EMPTY = 0, /* FRAME_STATE_INIT */
> + MTK_FD_CTX_FRAME_DATA_DONE = 3, /* FRAME_STATE_DONE */
> + MTK_FD_CTX_FRAME_DATA_STREAMOFF_DONE = 4, /*FRAME_STATE_STREAMOFF*/
> + MTK_FD_CTX_FRAME_DATA_ERROR = 5, /*FRAME_STATE_ERROR*/
> +};
> +
> +struct mtk_fd_ctx_frame_bundle {
> + struct mtk_fd_ctx_buffer*
> + buffers[MTK_FD_CTX_FRAME_BUNDLE_BUFFER_MAX];
> + int id;
> + int num_img_capture_bufs;
> + int num_img_output_bufs;
> + int num_meta_capture_bufs;
> + int num_meta_output_bufs;
> + int last_index;
> + int state;
> + struct list_head list;
> +};
> +
> +struct mtk_fd_ctx_frame_bundle_list {
> + struct list_head list;
> +};
> +
> +struct mtk_fd_ctx {
> + struct platform_device *pdev;
> + struct platform_device *smem_device;
> + unsigned short ctx_id;
> + char device_name[12];
> + const struct mtk_fd_ctx_ops *ops;
> + struct mtk_fd_dev_node_mapping *mtk_fd_dev_node_map;
> + unsigned int dev_node_num;
> + struct mtk_fd_ctx_queue queue[MTK_FD_CTX_QUEUES];
> + struct mtk_fd_ctx_queue_attr queues_attr;
> + atomic_t frame_param_sequence;
> + int streaming;
> + void *img_vb2_alloc_ctx;
> + void *smem_vb2_alloc_ctx;
> + struct v4l2_subdev_fh *fh;
> + struct mtk_fd_ctx_frame_bundle frame_bundles[VB2_MAX_FRAME];
> + struct mtk_fd_ctx_frame_bundle_list processing_frames;
> + struct mtk_fd_ctx_frame_bundle_list free_frames;
> + int enabled_dma_ports;
> + int num_frame_bundle;
> + int mode; /* Reserved for debug */
> + spinlock_t qlock;
> +};
> +
> +enum mtk_fd_ctx_buffer_state {
> + MTK_FD_CTX_BUFFER_NEW,
> + MTK_FD_CTX_BUFFER_PROCESSING,
> + MTK_FD_CTX_BUFFER_DONE,
> + MTK_FD_CTX_BUFFER_FAILED,
> +};
> +
> +struct mtk_fd_ctx_buffer {
> + union mtk_v4l2_fmt fmt;
> + struct mtk_fd_ctx_format *ctx_fmt;
> + int capture;
> + int image;
> + int frame_id;
> + int user_sequence; /* Sequence number assigned by user */
> + dma_addr_t daddr;
> + void *vaddr;
> + phys_addr_t paddr;
> + unsigned int queue;
> + unsigned int buffer_usage;
> + enum mtk_fd_ctx_buffer_state state;
> + int rotation;
> + struct list_head list;
> +};
> +
> +struct mtk_fd_ctx_desc {
> + char *proc_dev_phandle;
> + /* The context device's compatble string name in device tree*/
> + int (*init)(struct mtk_fd_ctx *ctx);
> + /* configure the core functions of the device context */
> +};
> +
> +struct mtk_fd_ctx_init_table {
> + int total_dev_ctx;
> + struct mtk_fd_ctx_desc *ctx_desc_tbl;
> +};
> +
> +struct mtk_fd_ctx_finish_param {
> + unsigned int frame_id;
> + u64 timestamp;
> + unsigned int state;
> +};
> +
> +bool mtk_fd_ctx_is_streaming(struct mtk_fd_ctx *ctx);
> +
> +int mtk_fd_ctx_core_job_finish(struct mtk_fd_ctx *ctx,
> + struct mtk_fd_ctx_finish_param *param);
> +
> +int mtk_fd_ctx_core_init(struct mtk_fd_ctx *ctx,
> + struct platform_device *pdev, int ctx_id,
> + struct mtk_fd_ctx_desc *ctx_desc,
> + struct platform_device *proc_pdev,
> + struct platform_device *smem_pdev);
> +
> +int mtk_fd_ctx_core_exit(struct mtk_fd_ctx *ctx);
> +
> +void mtk_fd_ctx_buf_init(struct mtk_fd_ctx_buffer *b, unsigned int queue,
> + dma_addr_t daddr);
> +
> +enum mtk_fd_ctx_buffer_state
> + mtk_fd_ctx_get_buffer_state(struct mtk_fd_ctx_buffer *b);
> +
> +int mtk_fd_ctx_next_global_frame_sequence(struct mtk_fd_ctx *ctx, int locked);
> +
> +int mtk_fd_ctx_core_queue_setup
> + (struct mtk_fd_ctx *ctx,
> + struct mtk_fd_ctx_queues_setting *queues_setting);
> +
> +int mtk_fd_ctx_core_finish_param_init(void *param, int frame_id, int state);
> +
> +int mtk_fd_ctx_finish_frame(struct mtk_fd_ctx *dev_ctx,
> + struct mtk_fd_ctx_frame_bundle *frame_bundle,
> + int done);
> +
> +int mtk_fd_ctx_frame_bundle_init(struct mtk_fd_ctx_frame_bundle *frame_bundle);
> +
> +void mtk_fd_ctx_frame_bundle_add(struct mtk_fd_ctx *ctx,
> + struct mtk_fd_ctx_frame_bundle *bundle,
> + struct mtk_fd_ctx_buffer *ctx_buf);
> +
> +int mtk_fd_ctx_trigger_job(struct mtk_fd_ctx *dev_ctx,
> + struct mtk_fd_ctx_frame_bundle *bundle_data);
> +
> +int mtk_fd_ctx_fmt_set_img(struct mtk_fd_ctx *dev_ctx, int queue_id,
> + struct v4l2_pix_format_mplane *user_fmt,
> + struct v4l2_pix_format_mplane *node_fmt);
> +
> +int mtk_fd_ctx_fmt_set_meta(struct mtk_fd_ctx *dev_ctx, int queue_id,
> + struct v4l2_meta_format *user_fmt,
> + struct v4l2_meta_format *node_fmt);
> +
> +int mtk_fd_ctx_format_load_default_fmt(struct mtk_fd_ctx_queue *queue,
> + struct v4l2_format *fmt_to_fill);
> +
> +int mtk_fd_ctx_streamon(struct mtk_fd_ctx *dev_ctx);
> +int mtk_fd_ctx_streamoff(struct mtk_fd_ctx *dev_ctx);
> +int mtk_fd_ctx_release(struct mtk_fd_ctx *dev_ctx);
> +int mtk_fd_ctx_open(struct mtk_fd_ctx *dev_ctx);
> +int mtk_fd_ctx_fd_init(struct mtk_fd_ctx *ctx);
> +
> +#endif /*__MTK_FD_CTX_H__*/
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd-dev-ctx-core.c b/drivers/media/platform/mtk-isp/fd/mtk_fd-dev-ctx-core.c
> new file mode 100644
> index 0000000..7314436
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd-dev-ctx-core.c
> @@ -0,0 +1,912 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2018 MediaTek Inc.
> + * Author: Frederic Chen <frederic.chen@xxxxxxxxxxxx>
> + *
> + * 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.
> + */
> +
> +#include <linux/device.h>
> +#include <linux/platform_device.h>
> +#include <media/videobuf2-dma-contig.h>
> +#include <linux/dma-mapping.h>
> +
> +#include "mtk_fd.h"
> +#include "mtk_fd-dev.h"
> +#include "mtk_fd-smem.h"
> +#include "mtk_fd-v4l2.h"
> +
> +#if KERNEL_VERSION(4, 8, 0) >= MTK_FD_KERNEL_BASE_VERSION
> +#include <linux/dma-attrs.h>
> +#endif
> +
> +struct vb2_v4l2_buffer *mtk_fd_ctx_buffer_get_vb2_v4l2_buffer
> +(struct mtk_fd_ctx_buffer *ctx_buf)
> +{
> + struct mtk_fd_dev_buffer *dev_buf = NULL;
> +
> + if (!ctx_buf) {
> + pr_err("Failed to convert ctx_buf to dev_buf: Null pointer\n");
> + return NULL;
> + }
> +
> + dev_buf = mtk_fd_ctx_buf_to_dev_buf(ctx_buf);
> +
> + return &dev_buf->m2m2_buf.vbb;
> +}
> +
> +int mtk_fd_ctx_core_queue_setup(struct mtk_fd_ctx *ctx,
> + struct mtk_fd_ctx_queues_setting *
> + queues_setting)
> +{
> + int queue_idx = 0;
> + int i = 0;
> +
> + for (i = 0; i < queues_setting->total_output_queues; i++) {
> + struct mtk_fd_ctx_queue_desc *queue_desc =
> + &queues_setting->output_queue_descs[i];
> + ctx->queue[queue_idx].desc = *queue_desc;
> + queue_idx++;
> + }
> +
> + /* Setup the capture queue */
> + for (i = 0; i < queues_setting->total_capture_queues; i++) {
> + struct mtk_fd_ctx_queue_desc *queue_desc =
> + &queues_setting->capture_queue_descs[i];
> + ctx->queue[queue_idx].desc = *queue_desc;
> + queue_idx++;
> + }
> +
> + ctx->queues_attr.master = queues_setting->master;
> + ctx->queues_attr.total_num = queue_idx;
> + ctx->dev_node_num = ctx->queues_attr.total_num;
> + strcpy(ctx->device_name, MTK_FD_DEV_NAME);
> + return 0;
> +}
> +
> +/* Mediatek FD context core initialization */
> +int mtk_fd_ctx_core_init(struct mtk_fd_ctx *ctx,
> + struct platform_device *pdev, int ctx_id,
> + struct mtk_fd_ctx_desc *ctx_desc,
> + struct platform_device *proc_pdev,
> + struct platform_device *smem_pdev)
> +{
> + /* Initialize main data structure */
> + int r = 0;
> +
> +#if KERNEL_VERSION(4, 8, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + ctx->smem_vb2_alloc_ctx =
> + vb2_dma_contig_init_ctx(&smem_pdev->dev);
> + ctx->img_vb2_alloc_ctx =
> + vb2_dma_contig_init_ctx(&pdev->dev);
> +#else
> + ctx->smem_vb2_alloc_ctx = &smem_pdev->dev;
> + ctx->img_vb2_alloc_ctx = &pdev->dev;
> +#endif
> + if (IS_ERR((__force void *)ctx->smem_vb2_alloc_ctx))
> + pr_err("Failed to alloc vb2 dma context: smem_vb2_alloc_ctx");
> +
> + if (IS_ERR((__force void *)ctx->img_vb2_alloc_ctx))
> + pr_err("Failed to alloc vb2 dma context: img_vb2_alloc_ctx");
> +
> + ctx->pdev = pdev;
> + ctx->ctx_id = ctx_id;
> + /* keep th smem pdev to use related iommu functions */
> + ctx->smem_device = smem_pdev;
> +
> + /* Will set default enabled after passing the unit test */
> + ctx->mode = MTK_FD_CTX_MODE_DEBUG_OFF;
> +
> + /* initialized the global frame index of the device context */
> + atomic_set(&ctx->frame_param_sequence, 0);
> + spin_lock_init(&ctx->qlock);
> +
> + /* setup the core operation of the device context */
> + if (ctx_desc && ctx_desc->init)
> + r = ctx_desc->init(ctx);
> +
> + return r;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_core_init);
> +
> +int mtk_fd_ctx_core_exit(struct mtk_fd_ctx *ctx)
> +{
> +#if KERNEL_VERSION(4, 8, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + vb2_dma_contig_cleanup_ctx(ctx->smem_vb2_alloc_ctx);
> + vb2_dma_contig_cleanup_ctx(ctx->img_vb2_alloc_ctx);
> +#else
> + ctx->smem_vb2_alloc_ctx = NULL;
> + ctx->img_vb2_alloc_ctx = NULL;
> +#endif
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_core_exit);
> +
> +int mtk_fd_ctx_next_global_frame_sequence(struct mtk_fd_ctx *ctx, int locked)
> +{
> + int global_frame_sequence =
> + atomic_inc_return(&ctx->frame_param_sequence);
> +
> + if (!locked)
> + spin_lock(&ctx->qlock);
> +
> + global_frame_sequence =
> + (global_frame_sequence & 0x0000FFFF) | (ctx->ctx_id << 16);
> +
> + if (!locked)
> + spin_unlock(&ctx->qlock);
> +
> + return global_frame_sequence;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_next_global_frame_sequence);
> +
> +static void mtk_fd_ctx_buffer_done
> + (struct mtk_fd_ctx_buffer *ctx_buf, int state)
> +{
> + if (!ctx_buf || state != MTK_FD_CTX_BUFFER_DONE ||
> + state != MTK_FD_CTX_BUFFER_FAILED)
> + return;
> +
> + ctx_buf->state = state;
> +}
> +
> +struct mtk_fd_ctx_frame_bundle *mtk_fd_ctx_get_processing_frame
> +(struct mtk_fd_ctx *dev_ctx, int frame_id)
> +{
> + struct mtk_fd_ctx_frame_bundle *frame_bundle = NULL;
> +
> + spin_lock(&dev_ctx->qlock);
> +
> + list_for_each_entry(frame_bundle,
> + &dev_ctx->processing_frames.list, list) {
> + if (frame_bundle->id == frame_id) {
> + spin_unlock(&dev_ctx->qlock);
> + return frame_bundle;
> + }
> + }
> +
> + spin_unlock(&dev_ctx->qlock);
> +
> + return NULL;
> +}
> +
> +/**
> + * structure mtk_fd_ctx_finish_param must be the first elemt of param
> + * So that the buffer can be return to vb2 queue successfully
> + */
> +int mtk_fd_ctx_core_finish_param_init(void *param, int frame_id, int state)
> +{
> + struct mtk_fd_ctx_finish_param *fram_param =
> + (struct mtk_fd_ctx_finish_param *)param;
> + fram_param->frame_id = frame_id;
> + fram_param->state = state;
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_core_finish_param_init);
> +
> +void mtk_fd_ctx_frame_bundle_add(struct mtk_fd_ctx *ctx,
> + struct mtk_fd_ctx_frame_bundle *bundle,
> + struct mtk_fd_ctx_buffer *ctx_buf)
> +{
> + int queue_id = 0;
> + struct mtk_fd_ctx_queue *ctx_queue = NULL;
> +
> + if (!bundle || !ctx_buf) {
> + pr_warn("Add buffer to frame bundle failed, bundle(%llx),buf(%llx)\n",
> + (long long)bundle, (long long)ctx_buf);
> + return;
> + }
> +
> + queue_id = ctx_buf->queue;
> +
> + if (bundle->buffers[queue_id])
> + pr_warn("Queue(%d) buffer has alreay in this bundle, overwrite happen\n",
> + queue_id);
> +
> + pr_debug("Add queue(%d) buffer%llx\n",
> + queue_id, (unsigned long long)ctx_buf);
> + bundle->buffers[queue_id] = ctx_buf;
> +
> + /* Fill context queue related information */
> + ctx_queue = &ctx->queue[queue_id];
> +
> + if (!ctx_queue) {
> + pr_err("Can't find ctx queue (%d)\n", queue_id);
> + return;
> + }
> +
> + if (ctx->queue[ctx_buf->queue].desc.image) {
> + if (ctx->queue[ctx_buf->queue].desc.capture)
> + bundle->num_img_capture_bufs++;
> + else
> + bundle->num_img_output_bufs++;
> + } else {
> + if (ctx->queue[ctx_buf->queue].desc.capture)
> + bundle->num_meta_capture_bufs++;
> + else
> + bundle->num_meta_output_bufs++;
> + }
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_frame_bundle_add);
> +
> +void mtk_fd_ctx_buf_init(struct mtk_fd_ctx_buffer *b,
> + unsigned int queue, dma_addr_t daddr)
> +{
> + b->state = MTK_FD_CTX_BUFFER_NEW;
> + b->queue = queue;
> + b->daddr = daddr;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_buf_init);
> +
> +enum mtk_fd_ctx_buffer_state
> + mtk_fd_ctx_get_buffer_state(struct mtk_fd_ctx_buffer *b)
> +{
> + return b->state;
> +}
> +
> +bool mtk_fd_ctx_is_streaming(struct mtk_fd_ctx *ctx)
> +{
> + return ctx->streaming;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_is_streaming);
> +
> +static int mtk_fd_ctx_free_frame(struct mtk_fd_ctx *dev_ctx,
> + struct mtk_fd_ctx_frame_bundle *frame_bundle)
> +{
> + spin_lock(&dev_ctx->qlock);
> +
> + frame_bundle->state = MTK_FD_CTX_FRAME_NEW;
> + list_del(&frame_bundle->list);
> + list_add_tail(&frame_bundle->list, &dev_ctx->free_frames.list);
> +
> + spin_unlock(&dev_ctx->qlock);
> +
> + return 0;
> +}
> +
> +int mtk_fd_ctx_core_job_finish(struct mtk_fd_ctx *dev_ctx,
> + struct mtk_fd_ctx_finish_param *param)
> +{
> + int i = 0;
> + struct platform_device *pdev = dev_ctx->pdev;
> + struct mtk_fd_ctx_finish_param *fram_param =
> + (struct mtk_fd_ctx_finish_param *)param;
> + struct mtk_fd_dev *fd_dev = NULL;
> + struct mtk_fd_ctx_frame_bundle *frame = NULL;
> + enum vb2_buffer_state vbf_state = VB2_BUF_STATE_DONE;
> + enum mtk_fd_ctx_buffer_state ctxf_state =
> + MTK_FD_CTX_BUFFER_DONE;
> + int user_sequence = 0;
> +
> + const int ctx_id =
> + MTK_FD_GET_CTX_ID_FROM_SEQUENCE(fram_param->frame_id);
> + u64 timestamp = 0;
> +
> + pr_debug("mtk_fd_ctx_core_job_finish_cb: param (%llx), platform_device(%llx)\n",
> + (unsigned long long)param, (unsigned long long)pdev);
> +
> + if (!dev_ctx)
> + pr_err("dev_ctx can't be null, can't release the frame\n");
> +
> + fd_dev = mtk_fd_ctx_to_dev(dev_ctx);
> +
> + if (fram_param) {
> + dev_info(&fd_dev->pdev->dev,
> + "CB recvied from ctx(%d), frame(%d), state(%d), fd_dev(%llx)\n",
> + ctx_id, fram_param->frame_id,
> + fram_param->state, (long long)fd_dev);
> + } else {
> + dev_err(&fd_dev->pdev->dev,
> + "CB recvied from ctx(%d), frame param is NULL\n",
> + ctx_id);
> + return -EINVAL;
> + }
> +
> + /* Get the buffers of the processed frame */
> + frame = mtk_fd_ctx_get_processing_frame(&fd_dev->ctx,
> + fram_param->frame_id);
> +
> + if (!frame) {
> + pr_err("Can't find the frame boundle, Frame(%d)\n",
> + fram_param->frame_id);
> + return -EINVAL;
> + }
> +
> + if (fram_param->state == MTK_FD_CTX_FRAME_DATA_ERROR) {
> + vbf_state = VB2_BUF_STATE_ERROR;
> + ctxf_state = MTK_FD_CTX_BUFFER_FAILED;
> + }
> +
> + /**
> + * Set the buffer's VB2 status so that
> + * the user can dequeue the buffer
> + */
> + timestamp = ktime_get_ns();
> + for (i = 0; i <= frame->last_index; i++) {
> + struct mtk_fd_ctx_buffer *ctx_buf = frame->buffers[i];
> +
> + if (!ctx_buf) {
> + dev_dbg(&fd_dev->pdev->dev,
> + "ctx_buf(queue id= %d) of frame(%d)is NULL\n",
> + i, fram_param->frame_id);
> + continue;
> + } else {
> + struct vb2_v4l2_buffer *b =
> + mtk_fd_ctx_buffer_get_vb2_v4l2_buffer(ctx_buf);
> + b->vb2_buf.timestamp = ktime_get_ns();
> + user_sequence = ctx_buf->user_sequence;
> + mtk_fd_ctx_buffer_done(ctx_buf, ctxf_state);
> + mtk_fd_v4l2_buffer_done(&b->vb2_buf, vbf_state);
> + }
> + }
> +
> + mtk_fd_ctx_free_frame(&fd_dev->ctx, frame);
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_core_job_finish);
> +
> +int mtk_fd_ctx_finish_frame(struct mtk_fd_ctx *dev_ctx,
> + struct mtk_fd_ctx_frame_bundle *frame_bundle,
> + int done)
> +{
> + spin_lock(&dev_ctx->qlock);
> + frame_bundle->state = MTK_FD_CTX_FRAME_PROCESSING;
> + list_add_tail(&frame_bundle->list, &dev_ctx->processing_frames.list);
> + spin_unlock(&dev_ctx->qlock);
> + return 0;
> +}
> +
> +static void set_img_fmt(struct v4l2_pix_format_mplane *mfmt_to_fill,
> + struct mtk_fd_ctx_format *ctx_fmt)
> +{
> + int i = 0;
> +
> + mfmt_to_fill->pixelformat = ctx_fmt->fmt.img.pixelformat;
> + mfmt_to_fill->num_planes = ctx_fmt->fmt.img.num_planes;
> +
> + pr_info("%s: Fmt(%d),w(%d),h(%d)\n",
> + __func__,
> + mfmt_to_fill->pixelformat,
> + mfmt_to_fill->width,
> + mfmt_to_fill->height);
> +
> + /**
> + * The implementation wil be adjust after integrating MDP module
> + * since it provides the common format suppporting function
> + */
> + for (i = 0 ; i < mfmt_to_fill->num_planes; ++i) {
> + int bpl = (mfmt_to_fill->width *
> + ctx_fmt->fmt.img.row_depth[i]) / 8;
> + int sizeimage = (mfmt_to_fill->width * mfmt_to_fill->height *
> + ctx_fmt->fmt.img.depth[i]) / 8;
> +
> + mfmt_to_fill->plane_fmt[i].bytesperline = bpl;
> + mfmt_to_fill->plane_fmt[i].sizeimage = sizeimage;
> + pr_info("plane(%d):bpl(%d),sizeimage(%u)\n",
> + i, bpl, mfmt_to_fill->plane_fmt[i].sizeimage);
> + }
> +}
> +
> +static void set_meta_fmt(struct v4l2_meta_format *metafmt_to_fill,
> + struct mtk_fd_ctx_format *ctx_fmt)
> +{
> + metafmt_to_fill->dataformat = ctx_fmt->fmt.meta.dataformat;
> +
> + if (ctx_fmt->fmt.meta.max_buffer_size <= 0 ||
> + ctx_fmt->fmt.meta.max_buffer_size >
> + MTK_FD_CTX_META_BUF_DEFAULT_SIZE) {
> + pr_warn("buf size of meta(%u) can't be 0, use default %u\n",
> + ctx_fmt->fmt.meta.dataformat,
> + MTK_FD_CTX_META_BUF_DEFAULT_SIZE);
> + metafmt_to_fill->buffersize = MTK_FD_CTX_META_BUF_DEFAULT_SIZE;
> + } else {
> + pr_info("Load the meta size setting %u\n",
> + ctx_fmt->fmt.meta.max_buffer_size);
> + metafmt_to_fill->buffersize = ctx_fmt->fmt.meta.max_buffer_size;
> + }
> +}
> +
> +/* Get the default format setting */
> +int mtk_fd_ctx_format_load_default_fmt(struct mtk_fd_ctx_queue *queue,
> + struct v4l2_format *fmt_to_fill)
> +{
> + struct mtk_fd_ctx_format *ctx_fmt = NULL;
> +
> + if (queue->desc.num_fmts == 0)
> + return 0; /* no format support list associated to this queue */
> +
> + if (queue->desc.default_fmt_idx >= queue->desc.num_fmts) {
> + pr_warn("Queue(%s) err: default idx(%d) must < num_fmts(%d)\n",
> + queue->desc.name, queue->desc.default_fmt_idx,
> + queue->desc.num_fmts);
> + queue->desc.default_fmt_idx = 0;
> + pr_warn("Queue(%s) : reset default idx(%d)\n",
> + queue->desc.name, queue->desc.default_fmt_idx);
> + }
> +
> + ctx_fmt = &queue->desc.fmts[queue->desc.default_fmt_idx];
> +
> + /* Check the type of the buffer */
> + if (queue->desc.image) {
> + struct v4l2_pix_format_mplane *node_fmt =
> + &fmt_to_fill->fmt.pix_mp;
> +
> + if (queue->desc.capture) {
> + fmt_to_fill->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> + node_fmt->width = MTK_FD_OUTPUT_MAX_WIDTH;
> + node_fmt->height = MTK_FD_OUTPUT_MAX_HEIGHT;
> + } else {
> + fmt_to_fill->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
> + node_fmt->width = MTK_FD_INPUT_MAX_WIDTH;
> + node_fmt->height = MTK_FD_INPUT_MAX_HEIGHT;
> + }
> + set_img_fmt(node_fmt, ctx_fmt);
> + } else {
> + /* meta buffer type */
> + struct v4l2_meta_format *node_fmt = &fmt_to_fill->fmt.meta;
> +
> + if (queue->desc.capture)
> + fmt_to_fill->type = V4L2_BUF_TYPE_META_CAPTURE;
> + else
> + fmt_to_fill->type = V4L2_BUF_TYPE_META_OUTPUT;
> +
> + set_meta_fmt(node_fmt, ctx_fmt);
> + }
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_format_load_default_fmt);
> +
> +static struct mtk_fd_ctx_format *mtk_fd_ctx_find_fmt
> + (struct mtk_fd_ctx_queue *queue, u32 format)
> +{
> + int i;
> + struct mtk_fd_ctx_format *ctx_fmt;
> +
> + for (i = 0; i < queue->desc.num_fmts; i++) {
> + ctx_fmt = &queue->desc.fmts[i];
> + if (queue->desc.image) {
> + pr_debug("idx(%d), pixelformat(%x), fmt(%x)\n",
> + i, ctx_fmt->fmt.img.pixelformat, format);
> + if (ctx_fmt->fmt.img.pixelformat == format)
> + return ctx_fmt;
> + } else {
> + if (ctx_fmt->fmt.meta.dataformat == format)
> + return ctx_fmt;
> + }
> + }
> + return NULL;
> +}
> +
> +int mtk_fd_ctx_fmt_set_meta(struct mtk_fd_ctx *dev_ctx, int queue_id,
> + struct v4l2_meta_format *user_fmt,
> + struct v4l2_meta_format *node_fmt)
> +{
> + struct mtk_fd_ctx_queue *queue = NULL;
> + struct mtk_fd_ctx_format *ctx_fmt;
> +
> + if (queue_id >= dev_ctx->queues_attr.total_num) {
> + pr_err("Invalid queue id:%d\n", queue_id);
> + return -EINVAL;
> + }
> +
> + queue = &dev_ctx->queue[queue_id];
> + if (!user_fmt || !node_fmt)
> + return -EINVAL;
> +
> + ctx_fmt = mtk_fd_ctx_find_fmt(queue, user_fmt->dataformat);
> + if (!ctx_fmt)
> + return -EINVAL;
> +
> + queue->ctx_fmt = ctx_fmt;
> + set_meta_fmt(node_fmt, ctx_fmt);
> + *user_fmt = *node_fmt;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_fmt_set_meta);
> +
> +int mtk_fd_ctx_fmt_set_img(struct mtk_fd_ctx *dev_ctx, int queue_id,
> + struct v4l2_pix_format_mplane *user_fmt,
> + struct v4l2_pix_format_mplane *node_fmt)
> +{
> + struct mtk_fd_ctx_queue *queue = NULL;
> + struct mtk_fd_ctx_format *ctx_fmt;
> +
> + if (queue_id >= dev_ctx->queues_attr.total_num) {
> + pr_err("Invalid queue id:%d\n", queue_id);
> + return -EINVAL;
> + }
> +
> + queue = &dev_ctx->queue[queue_id];
> + if (!user_fmt || !node_fmt)
> + return -EINVAL;
> +
> + ctx_fmt = mtk_fd_ctx_find_fmt(queue, user_fmt->pixelformat);
> + if (!ctx_fmt)
> + return -EINVAL;
> +
> + queue->ctx_fmt = ctx_fmt;
> + node_fmt->width = user_fmt->width;
> + node_fmt->height = user_fmt->height;
> +
> + set_img_fmt(node_fmt, ctx_fmt);
> +
> + *user_fmt = *node_fmt;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_fmt_set_img);
> +
> +int mtk_fd_ctx_streamon(struct mtk_fd_ctx *dev_ctx)
> +{
> + int ret = 0;
> +
> + if (dev_ctx->streaming) {
> + pr_warn("stream on failed, pdev(%llx), ctx(%d) already stream on\n",
> + (long long)dev_ctx->pdev, dev_ctx->ctx_id);
> + return -EBUSY;
> + }
> +
> + ret = mtk_fd_streamon(dev_ctx->pdev, dev_ctx->ctx_id);
> + if (ret) {
> + pr_err("streamon: ctx(%d) failed, notified by context\n",
> + dev_ctx->ctx_id);
> + return -EBUSY;
> + }
> +
> + dev_ctx->streaming = true;
> + ret = mtk_fd_dev_queue_buffers(mtk_fd_ctx_to_dev(dev_ctx), true);
> + if (ret)
> + pr_err("failed to queue initial buffers (%d)", ret);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_streamon);
> +
> +int mtk_fd_ctx_streamoff(struct mtk_fd_ctx *dev_ctx)
> +{
> + int ret = 0;
> +
> + if (!dev_ctx->streaming) {
> + pr_warn("Do nothing, pdev(%llx), ctx(%d) is already stream off\n",
> + (long long)dev_ctx->pdev, dev_ctx->ctx_id);
> + return -EBUSY;
> + }
> +
> + ret = mtk_fd_streamoff(dev_ctx->pdev, dev_ctx->ctx_id);
> + if (ret) {
> + pr_warn("streamoff: ctx(%d) failed, notified by context\n",
> + dev_ctx->ctx_id);
> + return -EBUSY;
> + }
> +
> + dev_ctx->streaming = false;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_streamoff);
> +
> +int mtk_fd_ctx_init_frame_bundles(struct mtk_fd_ctx *dev_ctx)
> +{
> + int i = 0;
> +
> + dev_ctx->num_frame_bundle = VB2_MAX_FRAME;
> +
> + spin_lock(&dev_ctx->qlock);
> +
> + /* Reset the queue*/
> + INIT_LIST_HEAD(&dev_ctx->processing_frames.list);
> + INIT_LIST_HEAD(&dev_ctx->free_frames.list);
> +
> + for (i = 0; i < dev_ctx->num_frame_bundle; i++) {
> + struct mtk_fd_ctx_frame_bundle *frame_bundle =
> + &dev_ctx->frame_bundles[i];
> + frame_bundle->state = MTK_FD_CTX_FRAME_NEW;
> + list_add_tail(&frame_bundle->list, &dev_ctx->free_frames.list);
> + }
> +
> + spin_unlock(&dev_ctx->qlock);
> +
> + return 0;
> +}
> +
> +int mtk_fd_ctx_open(struct mtk_fd_ctx *dev_ctx)
> +{
> + struct mtk_fd_dev *fd_dev = mtk_fd_ctx_to_dev(dev_ctx);
> + unsigned int enabled_dma_ports = 0;
> + int i = 0;
> +
> + if (!dev_ctx)
> + return -EINVAL;
> +
> + /* Get the enabled DMA ports */
> + for (i = 0; i < fd_dev->mem2mem2.num_nodes; i++) {
> + if (fd_dev->mem2mem2.nodes[i].enabled)
> + enabled_dma_ports |= dev_ctx->queue[i].desc.dma_port;
> + }
> +
> + dev_ctx->enabled_dma_ports = enabled_dma_ports;
> +
> + dev_dbg(&fd_dev->pdev->dev, "open device: (%llx)\n",
> + (long long)&fd_dev->pdev->dev);
> +
> + /* Workaround for SCP EMI access */
> + mtk_fd_smem_enable_mpu(&dev_ctx->smem_device->dev);
> +
> + /* Init the frame bundle pool */
> + mtk_fd_ctx_init_frame_bundles(dev_ctx);
> +
> + return mtk_fd_open(dev_ctx->pdev);
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_open);
> +
> +int mtk_fd_ctx_release(struct mtk_fd_ctx *dev_ctx)
> +{
> + return mtk_fd_release(dev_ctx->pdev);
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_release);
> +
> +static int mtk_fd_ctx_core_job_start(struct mtk_fd_ctx *dev_ctx,
> + struct mtk_fd_ctx_frame_bundle *bundle)
> +{
> + struct platform_device *pdev = dev_ctx->pdev;
> + int ret = 0;
> + struct v4l2_fd_param fd_param;
> + struct mtk_fd_ctx_buffer *ctx_buf_yuv_in = NULL;
> + struct mtk_fd_ctx_buffer *ctx_buf_meta_in = NULL;
> + struct mtk_fd_ctx_buffer *ctx_buf_meta_out = NULL;
> +
> + if (!pdev || !bundle) {
> + dev_err(&pdev->dev,
> + "pdev(%llx) and param(%llx) in start can't be NULL\n",
> + (long long)pdev, (long long)bundle);
> + return -EINVAL;
> + }
> + memset(&fd_param, 0, sizeof(struct v4l2_fd_param));
> + fd_param.frame_id = bundle->id;
> +
> + /* Img-in buffer */
> + ctx_buf_yuv_in = bundle->buffers[MTK_FD_CTX_FD_YUV_IN];
> + if (ctx_buf_yuv_in) {
> + fd_param.src_img.iova = (uint32_t)ctx_buf_yuv_in->daddr;
> + fd_param.src_img.va = (uint64_t)ctx_buf_yuv_in->vaddr;
> + fd_param.src_img_h =
> + (uint16_t)ctx_buf_yuv_in->fmt.pix_mp.height;
> + fd_param.src_img_w =
> + (uint16_t)ctx_buf_yuv_in->fmt.pix_mp.width;
> + }
> +
> + /* Meta-in buffer */
> + ctx_buf_meta_in = bundle->buffers[MTK_FD_CTX_FD_CONFIG_IN];
> + if (ctx_buf_meta_in) {
> + fd_param.fd_user_param.va = (uint64_t)ctx_buf_meta_in->vaddr;
> + fd_param.fd_user_param.pa = (uint32_t)ctx_buf_meta_in->paddr;
> + fd_param.fd_user_param.iova = (uint32_t)ctx_buf_meta_in->daddr;
> + } else {
> + dev_err(&pdev->dev, "meta in is null!\n");
> + fd_param.fd_user_param.pa = 0;
> + fd_param.fd_user_param.va = 0;
> + fd_param.fd_user_param.iova = 0;
> + }
> +
> + /* Meta-out buffer */
> + ctx_buf_meta_out = bundle->buffers[MTK_FD_CTX_FD_OUT];
> + if (ctx_buf_meta_out) {
> + fd_param.fd_user_result.va = (uint64_t)ctx_buf_meta_out->vaddr;
> + fd_param.fd_user_result.pa = (uint32_t)ctx_buf_meta_out->paddr;
> + fd_param.fd_user_result.iova =
> + (uint32_t)ctx_buf_meta_out->daddr;
> + } else {
> + dev_err(&pdev->dev, "meta out is null!\n");
> + fd_param.fd_user_result.pa = 0;
> + fd_param.fd_user_result.va = 0;
> + fd_param.fd_user_result.iova = 0;
> + }
> +
> + dev_info(&pdev->dev,
> + "Delegate job to mtk_fd_enqueue: pdev(0x%llx), frame(%d)\n",
> + (long long)pdev, bundle->id);
> + ret = mtk_fd_enqueue(pdev, &fd_param);
> +
> + if (ret) {
> + dev_warn(&pdev->dev, "mtk_fd_enqueue failed: %d\n", ret);
> + return -EBUSY;
> + }
> +
> + return 0;
> +}
> +
> +static void debug_bundle(struct mtk_fd_ctx_frame_bundle *bundle_data)
> +{
> + int i = 0;
> +
> + if (!bundle_data) {
> + pr_warn("bundle_data is NULL\n");
> + return;
> + }
> +
> + pr_debug("bundle buf nums (%d, %d,%d,%d)\n",
> + bundle_data->num_img_capture_bufs,
> + bundle_data->num_img_output_bufs,
> + bundle_data->num_meta_capture_bufs,
> + bundle_data->num_meta_output_bufs);
> +
> + for (i = 0; i < 16 ; i++) {
> + pr_debug("Bundle, buf[%d] = %llx\n",
> + i,
> + (unsigned long long)bundle_data->buffers[i]);
> + }
> +
> + pr_debug("Bundle last idx: %d\n", bundle_data->last_index);
> +}
> +
> +static struct mtk_fd_ctx_frame_bundle *mtk_fd_ctx_get_free_frame
> + (struct mtk_fd_ctx *dev_ctx)
> +{
> + struct mtk_fd_ctx_frame_bundle *frame_bundle = NULL;
> +
> + spin_lock(&dev_ctx->qlock);
> + list_for_each_entry(frame_bundle,
> + &dev_ctx->free_frames.list, list){
> + pr_debug("Check frame: state %d, new should be %d\n",
> + frame_bundle->state, MTK_FD_CTX_FRAME_NEW);
> + if (frame_bundle->state == MTK_FD_CTX_FRAME_NEW) {
> + frame_bundle->state = MTK_FD_CTX_FRAME_PREPARED;
> + pr_debug("Found free frame\n");
> + spin_unlock(&dev_ctx->qlock);
> + return frame_bundle;
> + }
> + }
> + spin_unlock(&dev_ctx->qlock);
> + pr_err("Can't found any bundle is MTK_FD_CTX_FRAME_NEW\n");
> + return NULL;
> +}
> +
> +static int mtk_fd_ctx_process_frame
> + (struct mtk_fd_ctx *dev_ctx,
> + struct mtk_fd_ctx_frame_bundle *frame_bundle)
> +{
> + spin_lock(&dev_ctx->qlock);
> +
> + frame_bundle->state = MTK_FD_CTX_FRAME_PROCESSING;
> + list_del(&frame_bundle->list);
> + list_add_tail(&frame_bundle->list, &dev_ctx->processing_frames.list);
> +
> + spin_unlock(&dev_ctx->qlock);
> + return 0;
> +}
> +
> +int mtk_fd_ctx_trigger_job(struct mtk_fd_ctx *dev_ctx,
> + struct mtk_fd_ctx_frame_bundle *bundle_data)
> +{
> + /* Scan all buffers and filled the ipi frame data*/
> + int i = 0;
> + struct mtk_fd_ctx_finish_param fram_param;
> +
> + struct mtk_fd_ctx_frame_bundle *bundle =
> + mtk_fd_ctx_get_free_frame(dev_ctx);
> +
> + pr_debug("Bundle data: , ctx id:%d\n",
> + dev_ctx->ctx_id);
> +
> + debug_bundle(bundle_data);
> +
> + if (!bundle) {
> + pr_err("bundle can't be NULL\n");
> + goto FAILE_JOB_NOT_TRIGGER;
> + }
> + if (!bundle_data) {
> + pr_err("bundle_data can't be NULL\n");
> + goto FAILE_JOB_NOT_TRIGGER;
> + }
> +
> + pr_debug("Copy bundle_data->buffers to bundle->buffers\n");
> + memcpy(bundle->buffers, bundle_data->buffers,
> + sizeof(struct mtk_fd_ctx_buffer *) *
> + MTK_FD_CTX_FRAME_BUNDLE_BUFFER_MAX);
> +
> + pr_debug("bundle setup (%d, %d,%d,%d)\n",
> + bundle_data->num_img_capture_bufs,
> + bundle_data->num_img_output_bufs,
> + bundle_data->num_meta_capture_bufs,
> + bundle_data->num_meta_output_bufs);
> +
> + bundle->num_img_capture_bufs = bundle_data->num_img_capture_bufs;
> + bundle->num_img_output_bufs = bundle_data->num_img_output_bufs;
> + bundle->num_meta_capture_bufs = bundle_data->num_meta_capture_bufs;
> + bundle->num_meta_output_bufs = bundle_data->num_meta_output_bufs;
> + bundle->id = mtk_fd_ctx_next_global_frame_sequence(dev_ctx,
> + dev_ctx->ctx_id);
> + bundle->last_index = dev_ctx->queues_attr.total_num - 1;
> +
> + debug_bundle(bundle);
> +
> + pr_debug("Fill Address data\n");
> + for (i = 0; i <= bundle->last_index; i++) {
> + struct mtk_fd_ctx_buffer *ctx_buf = bundle->buffers[i];
> + struct vb2_v4l2_buffer *b = NULL;
> +
> + pr_debug("Process queue[%d], ctx_buf:(%llx)\n",
> + i, (unsigned long long)ctx_buf);
> +
> + if (!ctx_buf) {
> + pr_warn("queue[%d], ctx_buf is NULL!!\n", i);
> + continue;
> + }
> +
> + pr_debug("Get VB2 V4L2 buffer\n");
> + b = mtk_fd_ctx_buffer_get_vb2_v4l2_buffer(ctx_buf);
> +
> + ctx_buf->image = dev_ctx->queue[ctx_buf->queue].desc.image;
> + ctx_buf->capture = dev_ctx->queue[ctx_buf->queue].desc.capture;
> + /* copy the fmt setting for queue's fmt*/
> + ctx_buf->fmt = dev_ctx->queue[ctx_buf->queue].fmt;
> + ctx_buf->ctx_fmt = dev_ctx->queue[ctx_buf->queue].ctx_fmt;
> + ctx_buf->frame_id = bundle->id;
> + ctx_buf->daddr =
> + vb2_dma_contig_plane_dma_addr(&b->vb2_buf, 0);
> + pr_debug("%s:vb2_buf: type(%d),idx(%d),mem(%d)\n",
> + __func__,
> + b->vb2_buf.type,
> + b->vb2_buf.index,
> + b->vb2_buf.memory);
> + ctx_buf->vaddr = vb2_plane_vaddr(&b->vb2_buf, 0);
> + ctx_buf->buffer_usage = dev_ctx->queue[i].buffer_usage;
> + ctx_buf->rotation = dev_ctx->queue[i].rotation;
> + pr_debug("Buf: queue(%d), vaddr(%llx), daddr(%llx)",
> + ctx_buf->queue, (unsigned long long)ctx_buf->vaddr,
> + (unsigned long long)ctx_buf->daddr);
> +
> + if (!ctx_buf->image) {
> + ctx_buf->paddr =
> + mtk_fd_smem_iova_to_phys
> + (&dev_ctx->smem_device->dev,
> + ctx_buf->daddr);
> + } else {
> + pr_debug("No pa: it is a image buffer\n");
> + ctx_buf->paddr = 0;
> + }
> + ctx_buf->state = MTK_FD_CTX_BUFFER_PROCESSING;
> + }
> +
> + if (mtk_fd_ctx_process_frame(dev_ctx, bundle)) {
> + pr_err("mtk_fd_ctx_process_frame failed: frame(%d)\n",
> + bundle->id);
> + goto FAILE_JOB_NOT_TRIGGER;
> + }
> +
> + if (dev_ctx->mode == MTK_FD_CTX_MODE_DEBUG_BYPASS_JOB_TRIGGER) {
> + memset(&fram_param, 0, sizeof(struct mtk_fd_ctx_finish_param));
> + fram_param.frame_id = bundle->id;
> + fram_param.state = MTK_FD_CTX_FRAME_DATA_DONE;
> + pr_debug("Ctx(%d) in HW bypass mode, will not trigger hw\n",
> + dev_ctx->ctx_id);
> +
> + mtk_fd_ctx_core_job_finish(dev_ctx, (void *)&fram_param);
> + return 0;
> + }
> +
> + if (mtk_fd_ctx_core_job_start(dev_ctx, bundle))
> + goto FAILE_JOB_NOT_TRIGGER;
> + return 0;
> +
> +FAILE_JOB_NOT_TRIGGER:
> + pr_debug("FAILE_JOB_NOT_TRIGGER: init fram_param: %llx\n",
> + (unsigned long long)&fram_param);
> + memset(&fram_param, 0, sizeof(struct mtk_fd_ctx_finish_param));
> + fram_param.frame_id = bundle->id;
> + fram_param.state = MTK_FD_CTX_FRAME_DATA_ERROR;
> + pr_debug("Call mtk_fd_ctx_core_job_finish_cb: fram_param: %llx",
> + (unsigned long long)&fram_param);
> + mtk_fd_ctx_core_job_finish(dev_ctx, (void *)&fram_param);
> +
> + return -EINVAL;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_trigger_job);
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd-dev.c b/drivers/media/platform/mtk-isp/fd/mtk_fd-dev.c
> new file mode 100644
> index 0000000..7e3acf7
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd-dev.c
> @@ -0,0 +1,355 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2018 Mediatek Corporation.
> + * Copyright (c) 2017 Intel Corporation.
> + * Copyright (C) 2017 Google, Inc.
> + *
> + * 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.
> + *
> + * MTK_FD-dev is highly based on Intel IPU 3 chrome driver
> + *
> + */
> +
> +#include <linux/module.h>
> +#include <linux/device.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/of.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <media/videobuf2-dma-contig.h>
> +#include "mtk_fd-dev.h"
> +
> +static struct platform_device *mtk_fd_dev_of_find_smem_dev
> + (struct platform_device *pdev);
> +
> +/* Initliaze a mtk_fd_dev representing a completed HW FD */
> +/* device */
> +int mtk_fd_dev_init(struct mtk_fd_dev *fd_dev,
> + struct platform_device *pdev,
> + struct media_device *media_dev,
> + struct v4l2_device *v4l2_dev)
> +{
> + int r = 0;
> +
> + fd_dev->pdev = pdev;
> +
> + mutex_init(&fd_dev->lock);
> + atomic_set(&fd_dev->qbuf_barrier, 0);
> + init_waitqueue_head(&fd_dev->buf_drain_wq);
> +
> + /* v4l2 sub-device registration */
> + r = mtk_fd_dev_mem2mem2_init(fd_dev, media_dev, v4l2_dev);
> +
> + if (r) {
> + dev_err(&fd_dev->pdev->dev,
> + "failed to create V4L2 devices (%d)\n", r);
> + goto failed_mem2mem2;
> + }
> +
> + return 0;
> +
> +failed_mem2mem2:
> + mutex_destroy(&fd_dev->lock);
> + return r;
> +}
> +
> +int mtk_fd_dev_get_total_node(struct mtk_fd_dev *mtk_fd_dev)
> +{
> + return mtk_fd_dev->ctx.queues_attr.total_num;
> +}
> +
> +int mtk_fd_dev_mem2mem2_init(struct mtk_fd_dev *fd_dev,
> + struct media_device *media_dev,
> + struct v4l2_device *v4l2_dev)
> +{
> + int r, i;
> + const int queue_master = fd_dev->ctx.queues_attr.master;
> +
> + pr_info("mem2mem2.name: %s\n", fd_dev->ctx.device_name);
> + fd_dev->mem2mem2.name = fd_dev->ctx.device_name;
> + fd_dev->mem2mem2.model = fd_dev->ctx.device_name;
> + fd_dev->mem2mem2.num_nodes =
> + mtk_fd_dev_get_total_node(fd_dev);
> + fd_dev->mem2mem2.vb2_mem_ops = &vb2_dma_contig_memops;
> + fd_dev->mem2mem2.buf_struct_size =
> + sizeof(struct mtk_fd_dev_buffer);
> +
> + fd_dev->mem2mem2.nodes = fd_dev->mem2mem2_nodes;
> + fd_dev->mem2mem2.dev = &fd_dev->pdev->dev;
> +
> + for (i = 0; i < fd_dev->ctx.dev_node_num; i++) {
> + fd_dev->mem2mem2.nodes[i].name =
> + mtk_fd_dev_get_node_name(fd_dev, i);
> + fd_dev->mem2mem2.nodes[i].output =
> + (!fd_dev->ctx.queue[i].desc.capture);
> + fd_dev->mem2mem2.nodes[i].immutable = false;
> + fd_dev->mem2mem2.nodes[i].enabled = false;
> + atomic_set(&fd_dev->mem2mem2.nodes[i].sequence, 0);
> + }
> +
> + /* Master queue is always enabled */
> + fd_dev->mem2mem2.nodes[queue_master].immutable = true;
> + fd_dev->mem2mem2.nodes[queue_master].enabled = true;
> +
> + pr_info("register v4l2 for %llx\n",
> + (unsigned long long)fd_dev);
> + r = mtk_fd_mem2mem2_v4l2_register(fd_dev, media_dev, v4l2_dev);
> +
> + if (r) {
> + pr_err("v4l2 init failed, dev(ctx:%d)\n", fd_dev->ctx.ctx_id);
> + return r;
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_dev_mem2mem2_init);
> +
> +void mtk_fd_dev_mem2mem2_exit(struct mtk_fd_dev *fd_dev)
> +{
> + mtk_fd_v4l2_unregister(fd_dev);
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_dev_mem2mem2_exit);
> +
> +char *mtk_fd_dev_get_node_name
> + (struct mtk_fd_dev *fd_dev, int node)
> +{
> + struct mtk_fd_ctx_queue_desc *mapped_queue_desc =
> + &fd_dev->ctx.queue[node].desc;
> +
> + return mapped_queue_desc->name;
> +}
> +
> +/* Get a free buffer from a video node */
> +static struct mtk_fd_ctx_buffer __maybe_unused *mtk_fd_dev_queue_getbuf
> + (struct mtk_fd_dev *fd_dev, int node)
> +{
> + struct mtk_fd_dev_buffer *buf;
> + int queue = -1;
> +
> + if (node > fd_dev->ctx.dev_node_num || node < 0) {
> + dev_err(&fd_dev->pdev->dev, "Invalid mtk_fd_dev node.\n");
> + return NULL;
> + }
> +
> + /* Get the corrosponding queue id of the video node */
> + /* Currently the queue id is the same as the node number */
> + queue = node;
> +
> + if (queue < 0) {
> + dev_err(&fd_dev->pdev->dev, "Invalid mtk_fd_dev node.\n");
> + return NULL;
> + }
> +
> + /* Find first free buffer from the node */
> + list_for_each_entry(buf, &fd_dev->mem2mem2.nodes[node].buffers,
> + m2m2_buf.list) {
> + if (mtk_fd_ctx_get_buffer_state(&buf->ctx_buf)
> + == MTK_FD_CTX_BUFFER_NEW)
> + return &buf->ctx_buf;
> + }
> +
> + /* There were no free buffers*/
> + return NULL;
> +}
> +
> +int mtk_fd_dev_get_queue_id_of_dev_node(struct mtk_fd_dev *fd_dev,
> + struct mtk_fd_dev_video_device *node)
> +{
> + return (node - fd_dev->mem2mem2.nodes);
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_dev_get_queue_id_of_dev_node);
> +
> +int mtk_fd_dev_queue_buffers(struct mtk_fd_dev *fd_dev,
> + bool initial)
> +{
> + unsigned int node;
> + int r = 0;
> + struct mtk_fd_dev_buffer *ibuf;
> + struct mtk_fd_ctx_frame_bundle bundle;
> + const int mtk_fd_dev_node_num = mtk_fd_dev_get_total_node(fd_dev);
> + const int queue_master = fd_dev->ctx.queues_attr.master;
> +
> + memset(&bundle, 0, sizeof(struct mtk_fd_ctx_frame_bundle));
> +
> + pr_info("%s, init(%d)\n", __func__, initial);
> +
> + if (!mtk_fd_ctx_is_streaming(&fd_dev->ctx)) {
> + pr_info("%s: stream off, no hw enqueue triggered\n", __func__);
> + return 0;
> + }
> +
> + mutex_lock(&fd_dev->lock);
> +
> + /* Buffer set is queued to background driver (e.g. DIP, FD, and P1) */
> + /* only when master input buffer is ready */
> + if (!mtk_fd_dev_queue_getbuf(fd_dev, queue_master)) {
> + mutex_unlock(&fd_dev->lock);
> + return 0;
> + }
> +
> + /* Check all node from the node after the master node */
> + for (node = (queue_master + 1) % mtk_fd_dev_node_num;
> + 1; node = (node + 1) % mtk_fd_dev_node_num) {
> + pr_info("Check node(%d), queue enabled(%d), node enabled(%d)\n",
> + node, fd_dev->queue_enabled[node],
> + fd_dev->mem2mem2.nodes[node].enabled);
> +
> + /* May skip some node according the scenario in the future */
> + if (fd_dev->queue_enabled[node] ||
> + fd_dev->mem2mem2.nodes[node].enabled) {
> + struct mtk_fd_ctx_buffer *buf =
> + mtk_fd_dev_queue_getbuf(fd_dev, node);
> + char *node_name =
> + mtk_fd_dev_get_node_name(fd_dev, node);
> +
> + if (!buf) {
> + dev_dbg(&fd_dev->pdev->dev,
> + "No free buffer of enabled node %s\n",
> + node_name);
> + break;
> + }
> +
> + /* To show the debug message */
> + ibuf = container_of(buf,
> + struct mtk_fd_dev_buffer, ctx_buf);
> + dev_dbg(&fd_dev->pdev->dev,
> + "may queue user %s buffer idx(%d) to ctx\n",
> + node_name,
> + ibuf->m2m2_buf.vbb.vb2_buf.index);
> + mtk_fd_ctx_frame_bundle_add(&fd_dev->ctx,
> + &bundle, buf);
> + }
> +
> + /* Stop if there is no free buffer in master input node */
> + if (node == queue_master) {
> + if (mtk_fd_dev_queue_getbuf(fd_dev, queue_master)) {
> + /* Has collected all buffer required */
> + mtk_fd_ctx_trigger_job(&fd_dev->ctx, &bundle);
> + } else {
> + pr_debug("no new buffer found in master node, not trigger job\n");
> + break;
> + }
> + }
> + }
> + mutex_unlock(&fd_dev->lock);
> +
> + if (r && r != -EBUSY)
> + goto failed;
> +
> + return 0;
> +
> +failed:
> + /*
> + * On error, mark all buffers as failed which are not
> + * yet queued to CSS
> + */
> + dev_err(&fd_dev->pdev->dev,
> + "failed to queue buffer to ctx on queue %i (%d)\n",
> + node, r);
> +
> + if (initial)
> + /* If we were called from streamon(), no need to finish bufs */
> + return r;
> +
> + for (node = 0; node < mtk_fd_dev_node_num; node++) {
> + struct mtk_fd_dev_buffer *buf, *buf0;
> +
> + if (!fd_dev->queue_enabled[node])
> + continue; /* Skip disabled queues */
> +
> + mutex_lock(&fd_dev->lock);
> + list_for_each_entry_safe
> + (buf, buf0,
> + &fd_dev->mem2mem2.nodes[node].buffers,
> + m2m2_buf.list) {
> + if (mtk_fd_ctx_get_buffer_state(&buf->ctx_buf) ==
> + MTK_FD_CTX_BUFFER_PROCESSING)
> + continue; /* Was already queued, skip */
> +
> + mtk_fd_v4l2_buffer_done(&buf->m2m2_buf.vbb.vb2_buf,
> + VB2_BUF_STATE_ERROR);
> + }
> + mutex_unlock(&fd_dev->lock);
> + }
> +
> + return r;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_dev_queue_buffers);
> +
> +int mtk_fd_dev_core_init(struct platform_device *pdev,
> + struct mtk_fd_dev *fd_dev,
> + struct mtk_fd_ctx_desc *ctx_desc)
> +{
> + return mtk_fd_dev_core_init_ext(pdev,
> + fd_dev, ctx_desc, NULL, NULL);
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_dev_core_init);
> +
> +int mtk_fd_dev_core_init_ext(struct platform_device *pdev,
> + struct mtk_fd_dev *fd_dev,
> + struct mtk_fd_ctx_desc *ctx_desc,
> + struct media_device *media_dev,
> + struct v4l2_device *v4l2_dev)
> +{
> + int r;
> + struct platform_device *smem_dev = NULL;
> +
> + smem_dev = mtk_fd_dev_of_find_smem_dev(pdev);
> +
> + if (!smem_dev)
> + dev_err(&pdev->dev, "failed to find smem_dev\n");
> +
> + /* Device context must be initialized before device instance */
> + r = mtk_fd_ctx_core_init(&fd_dev->ctx, pdev,
> + 0, ctx_desc, pdev, smem_dev);
> +
> + dev_info(&pdev->dev, "init fd_dev: %llx\n",
> + (unsigned long long)fd_dev);
> + /* init other device level members */
> + mtk_fd_dev_init(fd_dev, pdev, media_dev, v4l2_dev);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_dev_core_init_ext);
> +
> +int mtk_fd_dev_core_release(struct platform_device *pdev,
> + struct mtk_fd_dev *fd_dev)
> +{
> + mtk_fd_dev_mem2mem2_exit(fd_dev);
> + mtk_fd_ctx_core_exit(&fd_dev->ctx);
> + mutex_destroy(&fd_dev->lock);
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_dev_core_release);
> +
> +static struct platform_device *mtk_fd_dev_of_find_smem_dev
> + (struct platform_device *pdev)
> +{
> + struct device_node *smem_dev_node = NULL;
> +
> + if (!pdev) {
> + pr_err("Find_smem_dev failed, pdev can't be NULL\n");
> + return NULL;
> + }
> +
> + smem_dev_node = of_parse_phandle(pdev->dev.of_node,
> + "smem_device", 0);
> +
> + if (!smem_dev_node) {
> + dev_err(&pdev->dev,
> + "failed to find isp smem device for (%s)\n",
> + pdev->name);
> + return NULL;
> + }
> +
> + dev_dbg(&pdev->dev, "smem of node found, try to discovery device\n");
> + return of_find_device_by_node(smem_dev_node);
> +}
> +
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd-dev.h b/drivers/media/platform/mtk-isp/fd/mtk_fd-dev.h
> new file mode 100644
> index 0000000..d2b7d77
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd-dev.h
> @@ -0,0 +1,198 @@
> +/* SPDX-License-Identifier: GPL-2.0
> + * Copyright (c) 2018 Mediatek Corporation.
> + * Copyright (c) 2017 Intel Corporation.
> + *
> + * 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.
> + *
> + * MTK_FD-dev is highly based on Intel IPU 3 chrome driver
> + *
> + */
> +
> +#ifndef __MTK_FD_DEV_H__
> +#define __MTK_FD_DEV_H__
> +
> +#include <linux/platform_device.h>
> +#include <linux/version.h>
> +#include <media/v4l2-device.h>
> +#include <media/videobuf2-v4l2.h>
> +#include "mtk_fd-ctx.h"
> +
> +/* Added the macro for early stage verification */
> +/* based on kernel 4.4 environment. */
> +/* I will remove the version check after getting */
> +/* the devlopment platform based on 4.14 */
> +#define MTK_FD_KERNEL_BASE_VERSION KERNEL_VERSION(4, 14, 0)
> +
> +#define MTK_FD_DEV_NODE_MAX (MTK_FD_CTX_QUEUES)
> +
> +#define MTK_FD_INPUT_MIN_WIDTH 0U
> +#define MTK_FD_INPUT_MIN_HEIGHT 0U
> +#define MTK_FD_INPUT_MAX_WIDTH 480U
> +#define MTK_FD_INPUT_MAX_HEIGHT 640U
> +#define MTK_FD_OUTPUT_MIN_WIDTH 2U
> +#define MTK_FD_OUTPUT_MIN_HEIGHT 2U
> +#define MTK_FD_OUTPUT_MAX_WIDTH 480U
> +#define MTK_FD_OUTPUT_MAX_HEIGHT 640U
> +
> +#define file_to_mtk_fd_node(__file) \
> + container_of(video_devdata(__file),\
> + struct mtk_fd_dev_video_device, vdev)
> +
> +#define mtk_fd_ctx_to_dev(__ctx) \
> + container_of(__ctx,\
> + struct mtk_fd_dev, ctx)
> +
> +#define mtk_fd_m2m_to_dev(__m2m) \
> + container_of(__m2m,\
> + struct mtk_fd_dev, mem2mem2)
> +
> +#define mtk_fd_subdev_to_dev(__sd) \
> + container_of(__sd, \
> + struct mtk_fd_dev, mem2mem2.subdev)
> +
> +#define mtk_fd_vbq_to_isp_node(__vq) \
> + container_of(__vq, \
> + struct mtk_fd_dev_video_device, vbq)
> +
> +#define mtk_fd_ctx_buf_to_dev_buf(__ctx_buf) \
> + container_of(__ctx_buf, \
> + struct mtk_fd_dev_buffer, ctx_buf)
> +
> +#define mtk_fd_vb2_buf_to_dev_buf(__vb) \
> + container_of(vb, \
> + struct mtk_fd_dev_buffer, \
> + m2m2_buf.vbb.vb2_buf)
> +
> +#define mtk_fd_vb2_buf_to_m2m_buf(__vb) \
> + container_of(__vb, \
> + struct mtk_fd_mem2mem2_buffer, \
> + vbb.vb2_buf)
> +
> +#define mtk_fd_subdev_to_m2m(__sd) \
> + container_of(__sd, \
> + struct mtk_fd_mem2mem2_device, subdev)
> +
> +struct mtk_fd_mem2mem2_device;
> +
> +struct mtk_fd_mem2mem2_buffer {
> + struct vb2_v4l2_buffer vbb;
> + struct list_head list;
> +};
> +
> +struct mtk_fd_dev_buffer {
> + struct mtk_fd_mem2mem2_buffer m2m2_buf;
> + /* Intenal part */
> + struct mtk_fd_ctx_buffer ctx_buf;
> +};
> +
> +struct mtk_fd_dev_video_device {
> + const char *name;
> + int output;
> + int immutable;
> + int enabled;
> + int queued;
> + struct v4l2_format vdev_fmt;
> + struct video_device vdev;
> + struct media_pad vdev_pad;
> + struct v4l2_mbus_framefmt pad_fmt;
> + struct vb2_queue vbq;
> + struct list_head buffers;
> + struct mutex lock; /* Protect node data */
> + atomic_t sequence;
> +};
> +
> +struct mtk_fd_mem2mem2_device {
> + const char *name;
> + const char *model;
> + struct device *dev;
> + int num_nodes;
> + struct mtk_fd_dev_video_device *nodes;
> + const struct vb2_mem_ops *vb2_mem_ops;
> + unsigned int buf_struct_size;
> + int streaming;
> + struct v4l2_device *v4l2_dev;
> + struct media_device *media_dev;
> + struct media_pipeline pipeline;
> + struct v4l2_subdev subdev;
> + struct media_pad *subdev_pads;
> + struct v4l2_file_operations v4l2_file_ops;
> + const struct file_operations fops;
> +};
> +
> +struct mtk_fd_dev {
> + struct platform_device *pdev;
> + struct mtk_fd_dev_video_device mem2mem2_nodes[MTK_FD_DEV_NODE_MAX];
> + int queue_enabled[MTK_FD_DEV_NODE_MAX];
> + struct mtk_fd_mem2mem2_device mem2mem2;
> + struct v4l2_device v4l2_dev;
> + struct media_device media_dev;
> + struct mtk_fd_ctx ctx;
> + struct mutex lock; /* queue protection */
> + atomic_t qbuf_barrier;
> + struct {
> + struct v4l2_rect eff;
> + struct v4l2_rect bds;
> + struct v4l2_rect gdc;
> + } rect;
> + int suspend_in_stream;
> + wait_queue_head_t buf_drain_wq;
> +};
> +
> +int mtk_fd_media_register(struct device *dev,
> + struct media_device *media_dev,
> + const char *model);
> +
> +int mtk_fd_v4l2_register(struct device *dev,
> + struct media_device *media_dev,
> + struct v4l2_device *v4l2_dev);
> +
> +int mtk_fd_v4l2_unregister(struct mtk_fd_dev *dev);
> +
> +int mtk_fd_mem2mem2_v4l2_register(struct mtk_fd_dev *dev,
> + struct media_device *media_dev,
> + struct v4l2_device *v4l2_dev);
> +
> +void mtk_fd_v4l2_buffer_done(struct vb2_buffer *vb,
> + enum vb2_buffer_state state);
> +
> +int mtk_fd_dev_queue_buffers(struct mtk_fd_dev *dev, bool initial);
> +
> +int mtk_fd_dev_get_total_node(struct mtk_fd_dev *mtk_fd_dev);
> +
> +char *mtk_fd_dev_get_node_name(struct mtk_fd_dev *mtk_fd_dev_obj, int node);
> +
> +int mtk_fd_dev_init(struct mtk_fd_dev *fd_dev,
> + struct platform_device *pdev,
> + struct media_device *media_dev,
> + struct v4l2_device *v4l2_dev);
> +
> +void mtk_fd_dev_mem2mem2_exit(struct mtk_fd_dev *mtk_fd_dev_obj);
> +
> +int mtk_fd_dev_mem2mem2_init(struct mtk_fd_dev *fd_dev,
> + struct media_device *media_dev,
> + struct v4l2_device *v4l2_dev);
> +
> +int mtk_fd_dev_get_queue_id_of_dev_node(struct mtk_fd_dev *mtk_fd_dev_obj,
> + struct mtk_fd_dev_video_device *node);
> +
> +int mtk_fd_dev_core_init(struct platform_device *pdev,
> + struct mtk_fd_dev *fd_dev,
> + struct mtk_fd_ctx_desc *ctx_desc);
> +
> +int mtk_fd_dev_core_init_ext(struct platform_device *pdev,
> + struct mtk_fd_dev *fd_dev,
> + struct mtk_fd_ctx_desc *ctx_desc,
> + struct media_device *media_dev,
> + struct v4l2_device *v4l2_dev);
> +
> +int mtk_fd_dev_core_release(struct platform_device *pdev,
> + struct mtk_fd_dev *fd_dev);
> +
> +#endif /* __MTK_FD_DEV_H__ */
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd-smem-drv.c b/drivers/media/platform/mtk-isp/fd/mtk_fd-smem-drv.c
> new file mode 100644
> index 0000000..99a852d
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd-smem-drv.c
> @@ -0,0 +1,452 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2018 MediaTek Inc.
> + * Author: Frederic Chen <frederic.chen@xxxxxxxxxxxx>
> + *
> + * 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.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/device.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/of.h>
> +#include <linux/of_fdt.h>
> +#include <linux/of_reserved_mem.h>
> +#include <linux/dma-contiguous.h>
> +#include <linux/dma-mapping.h>
> +#include <linux/slab.h>
> +#include <linux/err.h>
> +#include <linux/iommu.h>
> +#include <asm/cacheflush.h>
> +
> +#define MTK_FD_SMEM_DEV_NAME "MTK-FD-SMEM"
> +
> +struct mtk_fd_smem_drv {
> + struct platform_device *pdev;
> + struct sg_table sgt;
> + struct page **smem_pages;
> + int num_smem_pages;
> + phys_addr_t smem_base;
> + dma_addr_t smem_dma_base;
> + int smem_size;
> +};
> +
> +static struct reserved_mem *isp_reserved_smem;
> +
> +static int mtk_fd_smem_setup_dma_ops(struct device *smem_dev,
> + const struct dma_map_ops *smem_ops);
> +
> +static int mtk_fd_smem_get_sgtable(struct device *dev,
> + struct sg_table *sgt,
> + void *cpu_addr, dma_addr_t dma_addr,
> + size_t size, unsigned long attrs);
> +
> +static const struct dma_map_ops smem_dma_ops = {
> + .get_sgtable = mtk_fd_smem_get_sgtable,
> +};
> +
> +static int mtk_fd_smem_init(struct mtk_fd_smem_drv **mtk_fd_smem_drv_out,
> + struct platform_device *pdev)
> +{
> + struct mtk_fd_smem_drv *isp_sys = NULL;
> + struct device *dev = &pdev->dev;
> +
> + isp_sys = devm_kzalloc(dev,
> + sizeof(*isp_sys), GFP_KERNEL);
> +
> + isp_sys->pdev = pdev;
> +
> + *mtk_fd_smem_drv_out = isp_sys;
> +
> + return 0;
> +}
> +
> +static int mtk_fd_smem_drv_probe(struct platform_device *pdev)
> +{
> + struct mtk_fd_smem_drv *smem_drv = NULL;
> + int r = 0;
> + struct device *dev = &pdev->dev;
> +
> + dev_dbg(dev, "probe mtk_fd_smem_drv\n");
> +
> + r = mtk_fd_smem_init(&smem_drv, pdev);
> +
> + if (!smem_drv)
> + return -ENOMEM;
> +
> + dev_set_drvdata(dev, smem_drv);
> +
> + if (isp_reserved_smem) {
> + dma_addr_t dma_addr;
> + phys_addr_t addr;
> + struct iommu_domain *smem_dom;
> + int i = 0;
> + int size_align = 0;
> + struct page **pages = NULL;
> + int n_pages = 0;
> + struct sg_table *sgt = &smem_drv->sgt;
> +
> + size_align = round_down(isp_reserved_smem->size,
> + PAGE_SIZE);
> + n_pages = size_align >> PAGE_SHIFT;
> +
> + pages = kmalloc_array(n_pages, sizeof(struct page *),
> + GFP_KERNEL);
> +
> + if (!pages)
> + return -ENOMEM;
> +
> + for (i = 0; i < n_pages; i++)
> + pages[i] = phys_to_page(isp_reserved_smem->base
> + + i * PAGE_SIZE);
> +
> + r = sg_alloc_table_from_pages(sgt, pages, n_pages, 0,
> + size_align, GFP_KERNEL);
> +
> + if (r) {
> + dev_err(dev, "failed to get alloca sg table\n");
> + return -ENOMEM;
> + }
> +
> + dma_map_sg_attrs(dev, sgt->sgl, sgt->nents,
> + DMA_BIDIRECTIONAL,
> + DMA_ATTR_SKIP_CPU_SYNC);
> +
> + dma_addr = sg_dma_address(sgt->sgl);
> + smem_dom = iommu_get_domain_for_dev(dev);
> + addr = iommu_iova_to_phys(smem_dom, dma_addr);
> +
> + if (addr != isp_reserved_smem->base)
> + dev_err(dev,
> + "incorrect pa(%llx) from iommu_iova_to_phys, should be %llx\n",
> + (unsigned long long)addr,
> + (unsigned long long)isp_reserved_smem->base);
> +
> + r = dma_declare_coherent_memory(dev,
> + isp_reserved_smem->base,
> + dma_addr, size_align, DMA_MEMORY_EXCLUSIVE);
> +
> + dev_dbg(dev,
> + "Coherent mem base(%llx,%llx),size(%lx),ret(%d)\n",
> + isp_reserved_smem->base,
> + dma_addr, size_align, r);
> +
> + smem_drv->smem_base = isp_reserved_smem->base;
> + smem_drv->smem_size = size_align;
> + smem_drv->smem_pages = pages;
> + smem_drv->num_smem_pages = n_pages;
> + smem_drv->smem_dma_base = dma_addr;
> +
> + dev_dbg(dev, "smem_drv setting (%llx,%lx,%llx,%d)\n",
> + smem_drv->smem_base, smem_drv->smem_size,
> + (unsigned long long)smem_drv->smem_pages,
> + smem_drv->num_smem_pages);
> + }
> +
> + r = mtk_fd_smem_setup_dma_ops(dev, &smem_dma_ops);
> +
> + return r;
> +}
> +
> +phys_addr_t mtk_fd_smem_iova_to_phys(struct device *dev,
> + dma_addr_t iova)
> +{
> + struct iommu_domain *smem_dom;
> + phys_addr_t addr;
> + phys_addr_t limit;
> + struct mtk_fd_smem_drv *smem_dev =
> + dev_get_drvdata(dev);
> +
> + if (!smem_dev)
> + return 0;
> +
> + smem_dom = iommu_get_domain_for_dev(dev);
> +
> + if (!smem_dom)
> + return 0;
> +
> + addr = iommu_iova_to_phys(smem_dom, iova);
> +
> + limit = smem_dev->smem_base + smem_dev->smem_size;
> +
> + if (addr < smem_dev->smem_base || addr >= limit) {
> + dev_err(dev,
> + "Unexpected paddr %pa (must >= %pa and <%pa)\n",
> + &addr, &smem_dev->smem_base, &limit);
> + return 0;
> + }
> + dev_dbg(dev, "Pa verifcation pass: %pa(>=%pa, <%pa)\n",
> + &addr, &smem_dev->smem_base, &limit);
> + return addr;
> +}
> +
> +static int mtk_fd_smem_drv_remove(struct platform_device *pdev)
> +{
> + struct mtk_fd_smem_drv *smem_drv =
> + dev_get_drvdata(&pdev->dev);
> +
> + kfree(smem_drv->smem_pages);
> + return 0;
> +}
> +
> +static int mtk_fd_smem_drv_suspend(struct device *dev)
> +{
> + return 0;
> +}
> +
> +static int mtk_fd_smem_drv_resume(struct device *dev)
> +{
> + return 0;
> +}
> +
> +static int mtk_fd_smem_drv_dummy_cb(struct device *dev)
> +{
> + return 0;
> +}
> +
> +static const struct dev_pm_ops mtk_fd_smem_drv_pm_ops = {
> + SET_RUNTIME_PM_OPS(&mtk_fd_smem_drv_dummy_cb,
> + &mtk_fd_smem_drv_dummy_cb, NULL)
> + SET_SYSTEM_SLEEP_PM_OPS
> + (&mtk_fd_smem_drv_suspend, &mtk_fd_smem_drv_resume)
> +};
> +
> +static const struct of_device_id mtk_fd_smem_drv_of_match[] = {
> + {
> + .compatible = "mediatek,fd_smem",
> + },
> + {},
> +};
> +
> +MODULE_DEVICE_TABLE(of, mtk_fd_smem_drv_of_match);
> +
> +static struct platform_driver mtk_fd_smem_driver = {
> + .probe = mtk_fd_smem_drv_probe,
> + .remove = mtk_fd_smem_drv_remove,
> + .driver = {
> + .name = MTK_FD_SMEM_DEV_NAME,
> + .of_match_table =
> + of_match_ptr(mtk_fd_smem_drv_of_match),
> + .pm = &mtk_fd_smem_drv_pm_ops,
> + },
> +};
> +
> +static int __init mtk_fd_smem_dma_setup(struct reserved_mem
> + *rmem)
> +{
> + unsigned long node = rmem->fdt_node;
> +
> + if (of_get_flat_dt_prop(node, "reusable", NULL))
> + return -EINVAL;
> +
> + if (!of_get_flat_dt_prop(node, "no-map", NULL)) {
> + pr_err("Reserved memory: regions without no-map are not yet supported\n");
> + return -EINVAL;
> + }
> +
> + isp_reserved_smem = rmem;
> +
> + pr_debug("Reserved memory: created DMA memory pool at %pa, size %ld MiB\n",
> + &rmem->base, (unsigned long)rmem->size / SZ_1M);
> + return 0;
> +}
> +
> +RESERVEDMEM_OF_DECLARE(mtk_fd_smem,
> + "mediatek,reserve-memory-fd_smem",
> + mtk_fd_smem_dma_setup);
> +
> +int __init mtk_fd_smem_drv_init(void)
> +{
> + int ret = 0;
> +
> + pr_debug("platform_driver_register: mtk_fd_smem_driver\n");
> + ret = platform_driver_register(&mtk_fd_smem_driver);
> +
> + if (ret)
> + pr_warn("fd smem drv init failed, driver didn't probe\n");
> +
> + return ret;
> +}
> +subsys_initcall(mtk_fd_smem_drv_init);
> +
> +void __exit mtk_fd_smem_drv_ext(void)
> +{
> + platform_driver_unregister(&mtk_fd_smem_driver);
> +}
> +module_exit(mtk_fd_smem_drv_ext);
> +
> +/********************************************
> + * MTK FD SMEM DMA ops *
> + ********************************************/
> +
> +struct dma_coherent_mem {
> + void *virt_base;
> + dma_addr_t device_base;
> + unsigned long pfn_base;
> + int size;
> + int flags;
> + unsigned long *bitmap;
> + spinlock_t spinlock; /* protect the members in dma_coherent_mem */
> + bool use_dev_dma_pfn_offset;
> +};
> +
> +static struct dma_coherent_mem *dev_get_coherent_memory(struct device *dev)
> +{
> + if (dev && dev->dma_mem)
> + return dev->dma_mem;
> + return NULL;
> +}
> +
> +static int mtk_fd_smem_get_sgtable(struct device *dev,
> + struct sg_table *sgt,
> + void *cpu_addr, dma_addr_t dma_addr,
> + size_t size, unsigned long attrs)
> +{
> + struct mtk_fd_smem_drv *smem_dev = dev_get_drvdata(dev);
> + int n_pages_align = 0;
> + int size_align = 0;
> + int page_start = 0;
> + unsigned long long offset_p = 0;
> + unsigned long long offset_d = 0;
> +
> + phys_addr_t paddr = mtk_fd_smem_iova_to_phys(dev, dma_addr);
> +
> + offset_d = (unsigned long long)dma_addr -
> + (unsigned long long)smem_dev->smem_dma_base;
> +
> + offset_p = (unsigned long long)paddr -
> + (unsigned long long)smem_dev->smem_base;
> +
> + dev_dbg(dev, "%s:dma_addr:%llx,cpu_addr:%llx,pa:%llx,size:%d\n",
> + __func__,
> + (unsigned long long)dma_addr,
> + (unsigned long long)cpu_addr,
> + (unsigned long long)paddr,
> + size
> + );
> +
> + dev_dbg(dev, "%s:offset p:%llx,offset d:%llx\n",
> + __func__,
> + (unsigned long long)offset_p,
> + (unsigned long long)offset_d
> + );
> +
> + size_align = round_up(size, PAGE_SIZE);
> + n_pages_align = size_align >> PAGE_SHIFT;
> + page_start = offset_p >> PAGE_SHIFT;
> +
> + dev_dbg(dev,
> + "%s:page idx:%d,page pa:%llx,pa:%llx, aligned size:%d\n",
> + __func__,
> + page_start,
> + (unsigned long long)page_to_phys(*(smem_dev->smem_pages
> + + page_start)),
> + (unsigned long long)paddr,
> + size_align
> + );
> +
> + if (!smem_dev) {
> + dev_err(dev, "can't get sgtable from smem_dev\n");
> + return -EINVAL;
> + }
> +
> + dev_dbg(dev, "get sgt of the smem: %d pages\n", n_pages_align);
> +
> + return sg_alloc_table_from_pages(sgt,
> + smem_dev->smem_pages + page_start,
> + n_pages_align,
> + 0, size_align, GFP_KERNEL);
> +}
> +
> +static void *mtk_fd_smem_get_cpu_addr(struct mtk_fd_smem_drv *smem_dev,
> + struct scatterlist *sg)
> +{
> + struct device *dev = &smem_dev->pdev->dev;
> + struct dma_coherent_mem *dma_mem =
> + dev_get_coherent_memory(dev);
> +
> + phys_addr_t addr = (phys_addr_t)sg_phys(sg);
> +
> + if (addr < smem_dev->smem_base ||
> + addr > smem_dev->smem_base + smem_dev->smem_size) {
> + dev_err(dev, "Invalid paddr 0x%llx from sg\n", addr);
> + return NULL;
> + }
> +
> + return dma_mem->virt_base + (addr - smem_dev->smem_base);
> +}
> +
> +static void mtk_fd_smem_sync_sg_for_cpu(struct device *dev,
> + struct scatterlist *sgl, int nelems,
> + enum dma_data_direction dir)
> +{
> + struct mtk_fd_smem_drv *smem_dev =
> + dev_get_drvdata(dev);
> + void *cpu_addr;
> +
> + cpu_addr = mtk_fd_smem_get_cpu_addr(smem_dev, sgl);
> +
> + dev_dbg(dev,
> + "__dma_unmap_area:paddr(0x%llx),vaddr(0x%llx),size(%d)\n",
> + (unsigned long long)sg_phys(sgl),
> + (unsigned long long)cpu_addr,
> + sgl->length);
> +
> + __dma_unmap_area(cpu_addr, sgl->length, dir);
> +}
> +
> +static void mtk_fd_smem_sync_sg_for_device(struct device *dev,
> + struct scatterlist *sgl, int nelems,
> + enum dma_data_direction dir)
> +{
> + struct mtk_fd_smem_drv *smem_dev =
> + dev_get_drvdata(dev);
> + void *cpu_addr;
> +
> + cpu_addr = mtk_fd_smem_get_cpu_addr(smem_dev, sgl);
> +
> + dev_dbg(dev,
> + "__dma_map_area:paddr(0x%llx),vaddr(0x%llx),size(%d)\n",
> + (unsigned long long)sg_phys(sgl),
> + (unsigned long long)cpu_addr,
> + sgl->length);
> +
> + __dma_map_area(cpu_addr, sgl->length, dir);
> +}
> +
> +static int mtk_fd_smem_setup_dma_ops(struct device *dev,
> + const struct dma_map_ops *smem_ops)
> +{
> + if (!dev->dma_ops)
> + return -EINVAL;
> +
> + memcpy((void *)smem_ops, dev->dma_ops, sizeof(*smem_ops));
> +
> + ((struct dma_map_ops *)smem_ops)->get_sgtable =
> + mtk_fd_smem_get_sgtable;
> + ((struct dma_map_ops *)smem_ops)->sync_sg_for_device =
> + mtk_fd_smem_sync_sg_for_device;
> + ((struct dma_map_ops *)smem_ops)->sync_sg_for_cpu =
> + mtk_fd_smem_sync_sg_for_cpu;
> +
> + dev->dma_ops = smem_ops;
> +
> + return 0;
> +}
> +
> +void mtk_fd_smem_enable_mpu(struct device *dev)
> +{
> + dev_warn(dev, "MPU enabling func is not ready now\n");
> +}
> +
> +MODULE_AUTHOR("Frederic Chen <frederic.chen@xxxxxxxxxxxx>");
> +MODULE_LICENSE("GPL v2");
> +MODULE_DESCRIPTION("Mediatek FD shared memory driver");
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd-smem.h b/drivers/media/platform/mtk-isp/fd/mtk_fd-smem.h
> new file mode 100644
> index 0000000..a19fc37
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd-smem.h
> @@ -0,0 +1,25 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2018 MediaTek Inc.
> + * Author: Frederic Chen <frederic.chen@xxxxxxxxxxxx>
> + *
> + * 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_FD_SMEM_H__
> +#define __MTK_FD_SMEM_H__
> +
> +#include <linux/dma-mapping.h>
> +
> +phys_addr_t mtk_fd_smem_iova_to_phys(struct device *smem_dev,
> + dma_addr_t iova);
> +void mtk_fd_smem_enable_mpu(struct device *smem_dev);
> +
> +#endif /*__MTK_FD_SMEM_H__*/
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2-util.c b/drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2-util.c
> new file mode 100644
> index 0000000..ab85aea
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2-util.c
> @@ -0,0 +1,1046 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2018 Mediatek Corporation.
> + * Copyright (c) 2017 Intel Corporation.
> + *
> + * 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.
> + *
> + * MTK_FD-v4l2 is highly based on Intel IPU 3 chrome driver
> + *
> + */
> +
> +#include <linux/module.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/videodev2.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/videobuf2-dma-contig.h>
> +#include <media/v4l2-subdev.h>
> +#include <media/v4l2-event.h>
> +#include <linux/device.h>
> +#include <linux/platform_device.h>
> +
> +#include "mtk_fd-dev.h"
> +
> +static u32 mtk_fd_node_get_v4l2_cap
> + (struct mtk_fd_ctx_queue *node_ctx);
> +
> +static int mtk_fd_videoc_s_meta_fmt(struct file *file, void *fh,
> + struct v4l2_format *f);
> +
> +static int mtk_fd_subdev_open(struct v4l2_subdev *sd,
> + struct v4l2_subdev_fh *fh)
> +{
> + struct mtk_fd_dev *fd_dev = mtk_fd_subdev_to_dev(sd);
> +
> + fd_dev->ctx.fh = fh;
> +
> + return mtk_fd_ctx_open(&fd_dev->ctx);
> +}
> +
> +static int mtk_fd_subdev_close(struct v4l2_subdev *sd,
> + struct v4l2_subdev_fh *fh)
> +{
> + struct mtk_fd_dev *fd_dev = mtk_fd_subdev_to_dev(sd);
> +
> + return mtk_fd_ctx_release(&fd_dev->ctx);
> +}
> +
> +static int mtk_fd_subdev_s_stream(struct v4l2_subdev *sd, int enable)
> +{
> + int ret = 0;
> +
> + struct mtk_fd_dev *fd_dev = mtk_fd_subdev_to_dev(sd);
> +
> + if (enable) {
> + ret = mtk_fd_ctx_streamon(&fd_dev->ctx);
> +
> + if (!ret)
> + ret = mtk_fd_dev_queue_buffers
> + (mtk_fd_ctx_to_dev(&fd_dev->ctx), true);
> + if (ret)
> + pr_err("failed to queue initial buffers (%d)", ret);
> + } else {
> + ret = mtk_fd_ctx_streamoff(&fd_dev->ctx);
> + }
> +
> + if (!ret)
> + fd_dev->mem2mem2.streaming = enable;
> +
> + return ret;
> +}
> +
> +static int mtk_fd_link_setup(struct media_entity *entity,
> + const struct media_pad *local,
> + const struct media_pad *remote, u32 flags)
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 =
> + container_of(entity, struct mtk_fd_mem2mem2_device,
> + subdev.entity);
> + struct mtk_fd_dev *fd_dev =
> + container_of(m2m2, struct mtk_fd_dev, mem2mem2);
> +
> + u32 pad = local->index;
> +
> + pr_info("link setup: %d --> %d\n", pad, remote->index);
> +
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + WARN_ON(entity->type != MEDIA_ENT_T_V4L2_SUBDEV);
> +#else
> + WARN_ON(entity->obj_type != MEDIA_ENTITY_TYPE_V4L2_SUBDEV);
> +#endif
> +
> + WARN_ON(pad >= m2m2->num_nodes);
> +
> + m2m2->nodes[pad].enabled = !!(flags & MEDIA_LNK_FL_ENABLED);
> +
> + /**
> + * queue_enable can be phase out in the future since
> + * we don't have internal queue of each node in
> + * v4l2 common module
> + */
> + fd_dev->queue_enabled[pad] = m2m2->nodes[pad].enabled;
> +
> + return 0;
> +}
> +
> +static void mtk_fd_vb2_buf_queue(struct vb2_buffer *vb)
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 = vb2_get_drv_priv(vb->vb2_queue);
> + struct mtk_fd_dev *mtk_fd_dev = mtk_fd_m2m_to_dev(m2m2);
> + struct device *dev = &mtk_fd_dev->pdev->dev;
> + struct mtk_fd_dev_buffer *buf = NULL;
> + struct vb2_v4l2_buffer *v4l2_buf = NULL;
> + struct mtk_fd_dev_video_device *node =
> + mtk_fd_vbq_to_isp_node(vb->vb2_queue);
> + int queue = mtk_fd_dev_get_queue_id_of_dev_node(mtk_fd_dev, node);
> +
> + dev_dbg(dev,
> + "queue vb2_buf: Node(%s) queue id(%d)\n",
> + node->name,
> + queue);
> +
> + if (queue < 0) {
> + dev_err(m2m2->dev, "Invalid mtk_fd_dev node.\n");
> + return;
> + }
> +
> + if (mtk_fd_dev->ctx.mode == MTK_FD_CTX_MODE_DEBUG_BYPASS_ALL) {
> + dev_dbg(m2m2->dev, "By pass mode, just loop back the buffer\n");
> + vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
> + return;
> + }
> +
> + if (!vb)
> + pr_err("VB can't be null\n");
> +
> + buf = mtk_fd_vb2_buf_to_dev_buf(vb);
> +
> + if (!buf)
> + pr_err("buf can't be null\n");
> +
> + v4l2_buf = to_vb2_v4l2_buffer(vb);
> +
> + if (!v4l2_buf)
> + pr_err("v4l2_buf can't be null\n");
> +
> + mutex_lock(&mtk_fd_dev->lock);
> +
> + pr_err("init mtk_fd_ctx_buf_init, sequence(%d)\n", v4l2_buf->sequence);
> +
> + /* the dma address will be filled in later frame buffer handling*/
> + mtk_fd_ctx_buf_init(&buf->ctx_buf, queue, (dma_addr_t)0);
> + pr_info("set mtk_fd_ctx_buf_init: user seq=%d\n",
> + buf->ctx_buf.user_sequence);
> +
> + /* Added the buffer into the tracking list */
> + list_add_tail(&buf->m2m2_buf.list,
> + &m2m2->nodes[node - m2m2->nodes].buffers);
> + mutex_unlock(&mtk_fd_dev->lock);
> +
> + /* Enqueue the buffer */
> + if (mtk_fd_dev->mem2mem2.streaming) {
> + pr_info("%s: mtk_fd_dev_queue_buffers\n", node->name);
> + mtk_fd_dev_queue_buffers(mtk_fd_dev, false);
> + }
> +}
> +
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> +static int mtk_fd_vb2_queue_setup(struct vb2_queue *vq,
> + const void *parg,
> + unsigned int *num_buffers,
> + unsigned int *num_planes,
> + unsigned int sizes[], void *alloc_ctxs[])
> +#else
> +static int mtk_fd_vb2_queue_setup(struct vb2_queue *vq,
> + unsigned int *num_buffers,
> + unsigned int *num_planes,
> + unsigned int sizes[],
> + struct device *alloc_devs[])
> +#endif
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 = vb2_get_drv_priv(vq);
> + struct mtk_fd_dev_video_device *node = mtk_fd_vbq_to_isp_node(vq);
> + struct mtk_fd_dev *fd_dev = mtk_fd_m2m_to_dev(m2m2);
> + void *buf_alloc_ctx = NULL;
> + int queue = mtk_fd_dev_get_queue_id_of_dev_node(fd_dev, node);
> + /* Get V4L2 format with the following method */
> + const struct v4l2_format *fmt = &node->vdev_fmt;
> +
> + *num_planes = 1;
> + *num_buffers = clamp_val(*num_buffers, 1, VB2_MAX_FRAME);
> +
> + vq->dma_attrs |= DMA_ATTR_NON_CONSISTENT;
> + pr_info("queue(%d): cached mmap enabled\n", queue);
> +
> + if (vq->type == V4L2_BUF_TYPE_META_CAPTURE ||
> + vq->type == V4L2_BUF_TYPE_META_OUTPUT) {
> + sizes[0] = fmt->fmt.meta.buffersize;
> + buf_alloc_ctx = fd_dev->ctx.smem_vb2_alloc_ctx;
> + pr_info("Select smem_vb2_alloc_ctx(%llx)\n",
> + (unsigned long long)buf_alloc_ctx);
> + } else {
> + sizes[0] = fmt->fmt.pix_mp.plane_fmt[0].sizeimage;
> + buf_alloc_ctx = fd_dev->ctx.img_vb2_alloc_ctx;
> + pr_info("Select img_vb2_alloc_ctx(%llx)\n",
> + (unsigned long long)buf_alloc_ctx);
> + }
> +
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + alloc_ctxs[0] = buf_alloc_ctx;
> +#else
> + alloc_devs[0] = (struct device *)buf_alloc_ctx;
> +#endif
> +
> + pr_info("mtk_fd_vb2_queue_setup:type(%d),size(%d),ctx(%llx)\n",
> + vq->type, sizes[0], (unsigned long long)buf_alloc_ctx);
> +
> + /* Initialize buffer queue */
> + INIT_LIST_HEAD(&node->buffers);
> +
> + return 0;
> +}
> +
> +static bool mtk_fd_all_nodes_streaming(struct mtk_fd_mem2mem2_device *m2m2,
> + struct mtk_fd_dev_video_device *except)
> +{
> + int i;
> +
> + for (i = 0; i < m2m2->num_nodes; i++) {
> + struct mtk_fd_dev_video_device *node = &m2m2->nodes[i];
> +
> + if (node == except)
> + continue;
> + if (node->enabled && !vb2_start_streaming_called(&node->vbq))
> + return false;
> + }
> +
> + return true;
> +}
> +
> +static void mtk_fd_return_all_buffers(struct mtk_fd_mem2mem2_device *m2m2,
> + struct mtk_fd_dev_video_device *node,
> + enum vb2_buffer_state state)
> +{
> + struct mtk_fd_dev *mtk_fd_dev = mtk_fd_m2m_to_dev(m2m2);
> + struct mtk_fd_mem2mem2_buffer *b, *b0;
> +
> + /* Return all buffers */
> + mutex_lock(&mtk_fd_dev->lock);
> + list_for_each_entry_safe(b, b0, &node->buffers, list) {
> + list_del(&b->list);
> + vb2_buffer_done(&b->vbb.vb2_buf, state);
> + }
> + mutex_unlock(&mtk_fd_dev->lock);
> +}
> +
> +static int mtk_fd_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 = vb2_get_drv_priv(vq);
> + struct mtk_fd_dev_video_device *node =
> + mtk_fd_vbq_to_isp_node(vq);
> + int r;
> +
> + if (m2m2->streaming) {
> + r = -EBUSY;
> + goto fail_return_bufs;
> + }
> +
> + if (!node->enabled) {
> + pr_err("Node (%ld) is not enable\n", node - m2m2->nodes);
> + r = -EINVAL;
> + goto fail_return_bufs;
> + }
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + r = media_entity_pipeline_start(&node->vdev.entity, &m2m2->pipeline);
> +#else
> + r = media_pipeline_start(&node->vdev.entity, &m2m2->pipeline);
> +#endif
> + if (r < 0) {
> + pr_err("Node (%ld) media_pipeline_start failed\n",
> + node - m2m2->nodes);
> + goto fail_return_bufs;
> + }
> +
> + if (!mtk_fd_all_nodes_streaming(m2m2, node))
> + return 0;
> +
> + /* Start streaming of the whole pipeline now */
> +
> + r = v4l2_subdev_call(&m2m2->subdev, video, s_stream, 1);
> + if (r < 0) {
> + pr_err("Node (%ld) v4l2_subdev_call s_stream failed\n",
> + node - m2m2->nodes);
> + goto fail_stop_pipeline;
> + }
> + return 0;
> +
> +fail_stop_pipeline:
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + media_entity_pipeline_stop(&node->vdev.entity);
> +#else
> + media_pipeline_stop(&node->vdev.entity);
> +#endif
> +fail_return_bufs:
> + mtk_fd_return_all_buffers(m2m2, node, VB2_BUF_STATE_QUEUED);
> +
> + return r;
> +}
> +
> +static void mtk_fd_vb2_stop_streaming(struct vb2_queue *vq)
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 = vb2_get_drv_priv(vq);
> + struct mtk_fd_dev_video_device *node =
> + mtk_fd_vbq_to_isp_node(vq);
> + int r;
> +
> + WARN_ON(!node->enabled);
> +
> + /* Was this the first node with streaming disabled? */
> + if (mtk_fd_all_nodes_streaming(m2m2, node)) {
> + /* Yes, really stop streaming now */
> + r = v4l2_subdev_call(&m2m2->subdev, video, s_stream, 0);
> + if (r)
> + dev_err(m2m2->dev, "failed to stop streaming\n");
> + }
> +
> + mtk_fd_return_all_buffers(m2m2, node, VB2_BUF_STATE_ERROR);
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + media_entity_pipeline_stop(&node->vdev.entity);
> +#else
> + media_pipeline_stop(&node->vdev.entity);
> +#endif
> +}
> +
> +static int mtk_fd_videoc_querycap(struct file *file, void *fh,
> + struct v4l2_capability *cap)
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 = video_drvdata(file);
> + struct mtk_fd_dev_video_device *node = file_to_mtk_fd_node(file);
> + struct mtk_fd_dev *fd_dev = mtk_fd_m2m_to_dev(m2m2);
> + int queue_id =
> + mtk_fd_dev_get_queue_id_of_dev_node(fd_dev, node);
> + struct mtk_fd_ctx_queue *node_ctx = &fd_dev->ctx.queue[queue_id];
> +
> + strlcpy(cap->driver, m2m2->name, sizeof(cap->driver));
> + strlcpy(cap->card, m2m2->model, sizeof(cap->card));
> + snprintf(cap->bus_info, sizeof(cap->bus_info),
> + "platform:%s", node->name);
> +
> + cap->device_caps =
> + mtk_fd_node_get_v4l2_cap(node_ctx) | V4L2_CAP_STREAMING;
> + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
> +
> + return 0;
> +}
> +
> +/* Propagate forward always the format from the CIO2 subdev */
> +static int mtk_fd_videoc_g_fmt(struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct mtk_fd_dev_video_device *node = file_to_mtk_fd_node(file);
> +
> + f->fmt = node->vdev_fmt.fmt;
> +
> + return 0;
> +}
> +
> +static int mtk_fd_videoc_try_fmt(struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 = video_drvdata(file);
> + struct mtk_fd_dev *fd_dev = mtk_fd_m2m_to_dev(m2m2);
> + struct mtk_fd_ctx *dev_ctx = &fd_dev->ctx;
> + struct mtk_fd_dev_video_device *node = file_to_mtk_fd_node(file);
> + int queue_id =
> + mtk_fd_dev_get_queue_id_of_dev_node(fd_dev, node);
> + int ret = 0;
> +
> + ret = mtk_fd_ctx_fmt_set_img(dev_ctx, queue_id, &f->fmt.pix_mp,
> + &node->vdev_fmt.fmt.pix_mp);
> +
> + /* Simply set the format to the node context in the initial version */
> + if (ret) {
> + pr_warn("Fmt(%d) not support for queue(%d), load default fmt\n",
> + f->fmt.pix_mp.pixelformat, queue_id);
> +
> + ret = mtk_fd_ctx_format_load_default_fmt
> + (&dev_ctx->queue[queue_id], f);
> + }
> +
> + if (!ret) {
> + node->vdev_fmt.fmt.pix_mp = f->fmt.pix_mp;
> + dev_ctx->queue[queue_id].fmt.pix_mp = node->vdev_fmt.fmt.pix_mp;
> + }
> +
> + return ret;
> +}
> +
> +static int mtk_fd_videoc_s_fmt(struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 = video_drvdata(file);
> + struct mtk_fd_dev *fd_dev = mtk_fd_m2m_to_dev(m2m2);
> + struct mtk_fd_ctx *dev_ctx = &fd_dev->ctx;
> + struct mtk_fd_dev_video_device *node = file_to_mtk_fd_node(file);
> + int queue_id = mtk_fd_dev_get_queue_id_of_dev_node(fd_dev, node);
> + int ret = 0;
> +
> + ret = mtk_fd_ctx_fmt_set_img(dev_ctx, queue_id, &f->fmt.pix_mp,
> + &node->vdev_fmt.fmt.pix_mp);
> +
> + /* Simply set the format to the node context in the initial version */
> + if (!ret)
> + dev_ctx->queue[queue_id].fmt.pix_mp = node->vdev_fmt.fmt.pix_mp;
> + else
> + dev_warn(&fd_dev->pdev->dev, "s_fmt, format not support\n");
> +
> + return ret;
> +}
> +
> +static int mtk_fd_meta_enum_format(struct file *file, void *fh,
> + struct v4l2_fmtdesc *f)
> +{
> + struct mtk_fd_dev_video_device *node = file_to_mtk_fd_node(file);
> +
> + if (f->index > 0 || f->type != node->vbq.type)
> + return -EINVAL;
> +
> + f->pixelformat = node->vdev_fmt.fmt.meta.dataformat;
> +
> + return 0;
> +}
> +
> +static int mtk_fd_videoc_s_meta_fmt(struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 = video_drvdata(file);
> + struct mtk_fd_dev *fd_dev = mtk_fd_m2m_to_dev(m2m2);
> + struct mtk_fd_ctx *dev_ctx = &fd_dev->ctx;
> + struct mtk_fd_dev_video_device *node = file_to_mtk_fd_node(file);
> + int queue_id = mtk_fd_dev_get_queue_id_of_dev_node(fd_dev, node);
> +
> + int ret = 0;
> +
> + if (f->type != node->vbq.type)
> + return -EINVAL;
> +
> + ret = mtk_fd_ctx_format_load_default_fmt(&dev_ctx->queue[queue_id], f);
> +
> + if (!ret) {
> + node->vdev_fmt.fmt.meta = f->fmt.meta;
> + dev_ctx->queue[queue_id].fmt.meta = node->vdev_fmt.fmt.meta;
> + } else {
> + dev_warn(&fd_dev->pdev->dev,
> + "s_meta_fm failed, format not support\n");
> + }
> +
> + return ret;
> +}
> +
> +static int mtk_fd_videoc_g_meta_fmt(struct file *file, void *fh,
> + struct v4l2_format *f)
> +{
> + struct mtk_fd_dev_video_device *node = file_to_mtk_fd_node(file);
> +
> + if (f->type != node->vbq.type)
> + return -EINVAL;
> +
> + f->fmt = node->vdev_fmt.fmt;
> +
> + return 0;
> +}
> +
> +int mtk_fd_videoc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
> +{
> + struct video_device *vdev = video_devdata(file);
> + struct vb2_buffer *vb;
> + struct mtk_fd_dev_buffer *db;
> + int r = 0;
> +
> + /* check if vb2 queue is busy */
> + if (vdev->queue->owner && vdev->queue->owner != file->private_data)
> + return -EBUSY;
> +
> + /**
> + * Keep the value of sequence in v4l2_buffer
> + * in ctx buf since vb2_qbuf will set it to 0
> + */
> + vb = vdev->queue->bufs[p->index];
> +
> + if (vb) {
> + db = mtk_fd_vb2_buf_to_dev_buf(vb);
> + pr_info("qbuf: p:%llx,vb:%llx, db:%llx\n",
> + (unsigned long long)p,
> + (unsigned long long)vb,
> + (unsigned long long)db);
> + db->ctx_buf.user_sequence = p->sequence;
> + }
> + r = vb2_qbuf(vdev->queue, vdev->v4l2_dev->mdev, p);
> + if (r)
> + pr_err("vb2_qbuf failed(err=%d): buf idx(%d)\n", r, p->index);
> + return r;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_videoc_qbuf);
> +
> +/******************** function pointers ********************/
> +
> +/* subdev internal operations */
> +static const struct v4l2_subdev_internal_ops mtk_fd_subdev_internal_ops = {
> + .open = mtk_fd_subdev_open,
> + .close = mtk_fd_subdev_close,
> +};
> +
> +static const struct v4l2_subdev_core_ops mtk_fd_subdev_core_ops = {
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
> + .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
> + .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
> + .g_ctrl = v4l2_subdev_g_ctrl,
> + .s_ctrl = v4l2_subdev_s_ctrl,
> + .queryctrl = v4l2_subdev_queryctrl,
> + .querymenu = v4l2_subdev_querymenu,
> +#endif
> +};
> +
> +static const struct v4l2_subdev_video_ops mtk_fd_subdev_video_ops = {
> + .s_stream = mtk_fd_subdev_s_stream,
> +};
> +
> +static const struct v4l2_subdev_ops mtk_fd_subdev_ops = {
> + .core = &mtk_fd_subdev_core_ops,
> + .video = &mtk_fd_subdev_video_ops,
> +};
> +
> +static const struct media_entity_operations mtk_fd_media_ops = {
> + .link_setup = mtk_fd_link_setup,
> + .link_validate = v4l2_subdev_link_validate,
> +};
> +
> +static const struct vb2_ops mtk_fd_vb2_ops = {
> + .buf_queue = mtk_fd_vb2_buf_queue,
> + .queue_setup = mtk_fd_vb2_queue_setup,
> + .start_streaming = mtk_fd_vb2_start_streaming,
> + .stop_streaming = mtk_fd_vb2_stop_streaming,
> + .wait_prepare = vb2_ops_wait_prepare,
> + .wait_finish = vb2_ops_wait_finish,
> +};
> +
> +static const struct v4l2_file_operations mtk_fd_v4l2_fops = {
> + .unlocked_ioctl = video_ioctl2,
> + .open = v4l2_fh_open,
> + .release = vb2_fop_release,
> + .poll = vb2_fop_poll,
> + .mmap = vb2_fop_mmap,
> +#ifdef CONFIG_COMPAT
> + .compat_ioctl32 = v4l2_compat_ioctl32,
> +#endif
> +};
> +
> +static const struct v4l2_ioctl_ops mtk_fd_v4l2_ioctl_ops = {
> + .vidioc_querycap = mtk_fd_videoc_querycap,
> +
> + .vidioc_g_fmt_vid_cap_mplane = mtk_fd_videoc_g_fmt,
> + .vidioc_s_fmt_vid_cap_mplane = mtk_fd_videoc_s_fmt,
> + .vidioc_try_fmt_vid_cap_mplane = mtk_fd_videoc_try_fmt,
> +
> + .vidioc_g_fmt_vid_out_mplane = mtk_fd_videoc_g_fmt,
> + .vidioc_s_fmt_vid_out_mplane = mtk_fd_videoc_s_fmt,
> + .vidioc_try_fmt_vid_out_mplane = mtk_fd_videoc_try_fmt,
> +
> + /* buffer queue management */
> + .vidioc_reqbufs = vb2_ioctl_reqbufs,
> + .vidioc_create_bufs = vb2_ioctl_create_bufs,
> + .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
> + .vidioc_querybuf = vb2_ioctl_querybuf,
> + .vidioc_qbuf = mtk_fd_videoc_qbuf,
> + .vidioc_dqbuf = vb2_ioctl_dqbuf,
> + .vidioc_streamon = vb2_ioctl_streamon,
> + .vidioc_streamoff = vb2_ioctl_streamoff,
> + .vidioc_expbuf = vb2_ioctl_expbuf,
> +};
> +
> +static const struct v4l2_ioctl_ops mtk_fd_v4l2_meta_ioctl_ops = {
> + .vidioc_querycap = mtk_fd_videoc_querycap,
> +
> + .vidioc_enum_fmt_meta_cap = mtk_fd_meta_enum_format,
> + .vidioc_g_fmt_meta_cap = mtk_fd_videoc_g_meta_fmt,
> + .vidioc_s_fmt_meta_cap = mtk_fd_videoc_s_meta_fmt,
> + .vidioc_try_fmt_meta_cap = mtk_fd_videoc_g_meta_fmt,
> +
> + .vidioc_enum_fmt_meta_out = mtk_fd_meta_enum_format,
> + .vidioc_g_fmt_meta_out = mtk_fd_videoc_g_meta_fmt,
> + .vidioc_s_fmt_meta_out = mtk_fd_videoc_s_meta_fmt,
> + .vidioc_try_fmt_meta_out = mtk_fd_videoc_g_meta_fmt,
> +
> + .vidioc_reqbufs = vb2_ioctl_reqbufs,
> + .vidioc_create_bufs = vb2_ioctl_create_bufs,
> + .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
> + .vidioc_querybuf = vb2_ioctl_querybuf,
> + .vidioc_qbuf = mtk_fd_videoc_qbuf,
> + .vidioc_dqbuf = vb2_ioctl_dqbuf,
> + .vidioc_streamon = vb2_ioctl_streamon,
> + .vidioc_streamoff = vb2_ioctl_streamoff,
> + .vidioc_expbuf = vb2_ioctl_expbuf,
> +};
> +
> +static u32 mtk_fd_node_get_v4l2_cap(struct mtk_fd_ctx_queue *node_ctx)
> +{
> + u32 cap = 0;
> +
> + if (node_ctx->desc.capture)
> + if (node_ctx->desc.image)
> + cap = V4L2_CAP_VIDEO_CAPTURE_MPLANE;
> + else
> + cap = V4L2_CAP_META_CAPTURE;
> + else
> + if (node_ctx->desc.image)
> + cap = V4L2_CAP_VIDEO_OUTPUT_MPLANE;
> + else
> + cap = V4L2_CAP_META_OUTPUT;
> +
> + return cap;
> +}
> +
> +static u32 mtk_fd_node_get_format_type(struct mtk_fd_ctx_queue *node_ctx)
> +{
> + u32 type;
> +
> + if (node_ctx->desc.capture)
> + if (node_ctx->desc.image)
> + type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> + else
> + type = V4L2_BUF_TYPE_META_CAPTURE;
> + else
> + if (node_ctx->desc.image)
> + type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
> + else
> + type = V4L2_BUF_TYPE_META_OUTPUT;
> +
> + return type;
> +}
> +
> +static const struct v4l2_ioctl_ops *mtk_fd_node_get_ioctl_ops
> + (struct mtk_fd_ctx_queue *node_ctx)
> +{
> + const struct v4l2_ioctl_ops *ops = NULL;
> +
> + if (node_ctx->desc.image)
> + ops = &mtk_fd_v4l2_ioctl_ops;
> + else
> + ops = &mtk_fd_v4l2_meta_ioctl_ops;
> + return ops;
> +}
> +
> +/**
> + * Config node's video properties
> + * according to the device context requirement
> + */
> +static void mtk_fd_node_to_v4l2(struct mtk_fd_dev *fd_dev, u32 node,
> + struct video_device *vdev,
> + struct v4l2_format *f)
> +{
> + u32 cap;
> + struct mtk_fd_ctx *device_ctx = &fd_dev->ctx;
> + struct mtk_fd_ctx_queue *node_ctx = &device_ctx->queue[node];
> +
> + WARN_ON(node >= mtk_fd_dev_get_total_node(fd_dev));
> + WARN_ON(!node_ctx);
> +
> + /* set cap of the node */
> + cap = mtk_fd_node_get_v4l2_cap(node_ctx);
> + f->type = mtk_fd_node_get_format_type(node_ctx);
> + vdev->ioctl_ops = mtk_fd_node_get_ioctl_ops(node_ctx);
> +
> + if (mtk_fd_ctx_format_load_default_fmt(&device_ctx->queue[node], f)) {
> + dev_err(&fd_dev->pdev->dev,
> + "Can't load default for node (%d): (%s)",
> + node, device_ctx->queue[node].desc.name);
> + } else {
> + if (device_ctx->queue[node].desc.image) {
> + dev_dbg(&fd_dev->pdev->dev,
> + "Node (%d): (%s), dfmt (f:0x%x w:%d: h:%d s:%d)\n",
> + node, device_ctx->queue[node].desc.name,
> + f->fmt.pix_mp.pixelformat,
> + f->fmt.pix_mp.width,
> + f->fmt.pix_mp.height,
> + f->fmt.pix_mp.plane_fmt[0].sizeimage);
> + node_ctx->fmt.pix_mp = f->fmt.pix_mp;
> + } else {
> + dev_info(&fd_dev->pdev->dev,
> + "Node (%d): (%s), dfmt (f:0x%x s:%u)\n",
> + node, device_ctx->queue[node].desc.name,
> + f->fmt.meta.dataformat,
> + f->fmt.meta.buffersize);
> + node_ctx->fmt.meta = f->fmt.meta;
> + }
> + }
> +
> +#if KERNEL_VERSION(4, 7, 0) < MTK_FD_KERNEL_BASE_VERSION
> + /* device_caps was supported after 4.7 */
> + vdev->device_caps = V4L2_CAP_STREAMING | cap;
> +#endif
> +}
> +
> +int mtk_fd_media_register(struct device *dev, struct media_device *media_dev,
> + const char *model)
> +{
> + int r = 0;
> +
> + media_dev->dev = dev;
> + dev_info(dev, "setup media_dev.dev: %llx\n",
> + (unsigned long long)media_dev->dev);
> +
> + strlcpy(media_dev->model, model, sizeof(media_dev->model));
> + dev_info(dev, "setup media_dev.model: %s\n",
> + media_dev->model);
> +
> + snprintf(media_dev->bus_info, sizeof(media_dev->bus_info),
> + "%s", dev_name(dev));
> + dev_info(dev, "setup media_dev.bus_info: %s\n",
> + media_dev->bus_info);
> +
> + media_dev->hw_revision = 0;
> + dev_info(dev, "setup media_dev.hw_revision: %d\n",
> + media_dev->hw_revision);
> +
> +#if KERNEL_VERSION(4, 5, 0) <= MTK_FD_KERNEL_BASE_VERSION
> + dev_info(dev, "media_device_init: media_dev:%llx\n",
> + (unsigned long long)media_dev);
> + media_device_init(media_dev);
> +#endif
> +
> + pr_info("Register media device: %s, %llx",
> + media_dev->model,
> + (unsigned long long)media_dev);
> +
> + r = media_device_register(media_dev);
> +
> + if (r) {
> + dev_err(dev, "failed to register media device (%d)\n", r);
> + goto fail_v4l2_dev;
> + }
> + return 0;
> +
> +fail_v4l2_dev:
> + media_device_unregister(media_dev);
> +#if KERNEL_VERSION(4, 5, 0) <= MTK_FD_KERNEL_BASE_VERSION
> + media_device_cleanup(media_dev);
> +#endif
> +
> + return r;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_media_register);
> +
> +int mtk_fd_v4l2_register(struct device *dev,
> + struct media_device *media_dev,
> + struct v4l2_device *v4l2_dev)
> +{
> + int r = 0;
> + /* Set up v4l2 device */
> + v4l2_dev->mdev = media_dev;
> + dev_info(dev, "setup v4l2_dev->mdev: %llx",
> + (unsigned long long)v4l2_dev->mdev);
> +
> + dev_info(dev, "Register v4l2 device: %llx",
> + (unsigned long long)v4l2_dev);
> +
> + r = v4l2_device_register(dev, v4l2_dev);
> +
> + if (r) {
> + dev_err(dev, "failed to register V4L2 device (%d)\n", r);
> + goto fail_v4l2_dev;
> + }
> +
> + return 0;
> +
> +fail_v4l2_dev:
> + media_device_unregister(media_dev);
> +#if KERNEL_VERSION(4, 5, 0) <= MTK_FD_KERNEL_BASE_VERSION
> + media_device_cleanup(media_dev);
> +#endif
> +
> + return r;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_v4l2_register);
> +
> +int mtk_fd_mem2mem2_v4l2_register(struct mtk_fd_dev *dev,
> + struct media_device *media_dev,
> + struct v4l2_device *v4l2_dev)
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 = &dev->mem2mem2;
> +
> + int i, r;
> +
> + /**
> + * If media_dev or v4l2_dev is not set,
> + * use the default one in mtk_fd_dev
> + */
> + if (!media_dev) {
> + m2m2->media_dev = &dev->media_dev;
> + r = mtk_fd_media_register(&dev->pdev->dev, m2m2->media_dev,
> + m2m2->model);
> +
> + if (r) {
> + dev_err(m2m2->dev, "failed to register media device (%d)\n", r);
> + goto fail_media_dev;
> + }
> + } else {
> + m2m2->media_dev = media_dev;
> + }
> +
> + if (!v4l2_dev) {
> + m2m2->v4l2_dev = &dev->v4l2_dev;
> + r = mtk_fd_v4l2_register(&dev->pdev->dev,
> + m2m2->media_dev,
> + m2m2->v4l2_dev);
> + if (r) {
> + dev_err(m2m2->dev, "failed to register V4L2 device (%d)\n", r);
> + goto fail_v4l2_dev;
> + }
> + } else {
> + m2m2->v4l2_dev = v4l2_dev;
> + }
> +
> + /* Initialize miscellaneous variables */
> + m2m2->streaming = false;
> + m2m2->v4l2_file_ops = mtk_fd_v4l2_fops;
> +
> + /* Initialize subdev media entity */
> + m2m2->subdev_pads = kcalloc(m2m2->num_nodes, sizeof(*m2m2->subdev_pads),
> + GFP_KERNEL);
> + if (!m2m2->subdev_pads) {
> + r = -ENOMEM;
> + goto fail_subdev_pads;
> + }
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + r = media_entity_init(&m2m2->subdev.entity, m2m2->num_nodes,
> + m2m2->subdev_pads, 0);
> +#else
> + r = media_entity_pads_init(&m2m2->subdev.entity, m2m2->num_nodes,
> + m2m2->subdev_pads);
> +#endif
> + if (r) {
> + dev_err(m2m2->dev,
> + "failed initialize subdev media entity (%d)\n", r);
> + goto fail_media_entity;
> + }
> +
> + /* Initialize subdev */
> + v4l2_subdev_init(&m2m2->subdev, &mtk_fd_subdev_ops);
> +
> + m2m2->subdev.entity.function =
> + MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
> +
> + m2m2->subdev.entity.ops = &mtk_fd_media_ops;
> +
> + for (i = 0; i < m2m2->num_nodes; i++) {
> + m2m2->subdev_pads[i].flags = m2m2->nodes[i].output ?
> + MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
> + }
> +
> + m2m2->subdev.flags =
> + V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
> + snprintf(m2m2->subdev.name, sizeof(m2m2->subdev.name),
> + "%s", m2m2->name);
> + v4l2_set_subdevdata(&m2m2->subdev, m2m2);
> + m2m2->subdev.internal_ops = &mtk_fd_subdev_internal_ops;
> +
> + pr_info("register subdev: %s\n", m2m2->subdev.name);
> + r = v4l2_device_register_subdev(m2m2->v4l2_dev, &m2m2->subdev);
> + if (r) {
> + dev_err(m2m2->dev, "failed initialize subdev (%d)\n", r);
> + goto fail_subdev;
> + }
> + r = v4l2_device_register_subdev_nodes(m2m2->v4l2_dev);
> + if (r) {
> + dev_err(m2m2->dev, "failed to register subdevs (%d)\n", r);
> + goto fail_subdevs;
> + }
> +
> + /* Create video nodes and links */
> + for (i = 0; i < m2m2->num_nodes; i++) {
> + struct mtk_fd_dev_video_device *node = &m2m2->nodes[i];
> + struct video_device *vdev = &node->vdev;
> + struct vb2_queue *vbq = &node->vbq;
> + u32 flags;
> +
> + /* Initialize miscellaneous variables */
> + mutex_init(&node->lock);
> + INIT_LIST_HEAD(&node->buffers);
> +
> + /* Initialize formats to default values */
> + mtk_fd_node_to_v4l2(dev, i, vdev, &node->vdev_fmt);
> +
> + /* Initialize media entities */
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + r = media_entity_init(&vdev->entity, 1, &node->vdev_pad, 0);
> +#else
> + r = media_entity_pads_init(&vdev->entity, 1, &node->vdev_pad);
> +#endif
> + if (r) {
> + dev_err(m2m2->dev,
> + "failed initialize media entity (%d)\n", r);
> + goto fail_vdev_media_entity;
> + }
> + node->vdev_pad.flags = node->output ?
> + MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK;
> + vdev->entity.ops = NULL;
> +
> + /* Initialize vbq */
> + vbq->type = node->vdev_fmt.type;
> + vbq->io_modes = VB2_MMAP | VB2_DMABUF;
> + vbq->ops = &mtk_fd_vb2_ops;
> + vbq->mem_ops = m2m2->vb2_mem_ops;
> + m2m2->buf_struct_size = sizeof(struct mtk_fd_dev_buffer);
> + vbq->buf_struct_size = m2m2->buf_struct_size;
> + vbq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
> + vbq->min_buffers_needed = 0; /* Can streamon w/o buffers */
> + /* Put the process hub sub device in the vb2 private data*/
> + vbq->drv_priv = m2m2;
> + vbq->lock = &node->lock;
> + r = vb2_queue_init(vbq);
> + if (r) {
> + dev_err(m2m2->dev,
> + "failed to initialize video queue (%d)\n", r);
> + goto fail_vdev;
> + }
> +
> + /* Initialize vdev */
> + snprintf(vdev->name, sizeof(vdev->name), "%s %s",
> + m2m2->name, node->name);
> + vdev->release = video_device_release_empty;
> + vdev->fops = &m2m2->v4l2_file_ops;
> + vdev->lock = &node->lock;
> + vdev->v4l2_dev = m2m2->v4l2_dev;
> + vdev->queue = &node->vbq;
> + vdev->vfl_dir = node->output ? VFL_DIR_TX : VFL_DIR_RX;
> + video_set_drvdata(vdev, m2m2);
> + pr_info("register vdev: %s\n", vdev->name);
> + r = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
> + if (r) {
> + dev_err(m2m2->dev,
> + "failed to register video device (%d)\n", r);
> + goto fail_vdev;
> + }
> +
> + /* Create link between video node and the subdev pad */
> + flags = 0;
> + if (node->enabled)
> + flags |= MEDIA_LNK_FL_ENABLED;
> + if (node->immutable)
> + flags |= MEDIA_LNK_FL_IMMUTABLE;
> + if (node->output) {
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + r = media_entity_create_link
> +#else
> + r = media_create_pad_link
> +#endif
> + (&vdev->entity, 0,
> + &m2m2->subdev.entity,
> + i, flags);
> + } else {
> +#if KERNEL_VERSION(4, 5, 0) >= MTK_FD_KERNEL_BASE_VERSION
> + r = media_entity_create_link
> +#else
> + r = media_create_pad_link
> +#endif
> + (&m2m2->subdev.entity,
> + i, &vdev->entity, 0,
> + flags);
> + }
> + if (r)
> + goto fail_link;
> + }
> +
> + return 0;
> +
> + for (; i >= 0; i--) {
> +fail_link:
> + video_unregister_device(&m2m2->nodes[i].vdev);
> +fail_vdev:
> + media_entity_cleanup(&m2m2->nodes[i].vdev.entity);
> +fail_vdev_media_entity:
> + mutex_destroy(&m2m2->nodes[i].lock);
> + }
> +fail_subdevs:
> + v4l2_device_unregister_subdev(&m2m2->subdev);
> +fail_subdev:
> + media_entity_cleanup(&m2m2->subdev.entity);
> +fail_media_entity:
> + kfree(m2m2->subdev_pads);
> +fail_subdev_pads:
> + v4l2_device_unregister(m2m2->v4l2_dev);
> +fail_v4l2_dev:
> +fail_media_dev:
> + pr_err("fail_v4l2_dev: media_device_unregister and clenaup:%llx",
> + (unsigned long long)m2m2->media_dev);
> + media_device_unregister(m2m2->media_dev);
> +#if KERNEL_VERSION(4, 5, 0) <= MTK_FD_KERNEL_BASE_VERSION
> + media_device_cleanup(m2m2->media_dev);
> +#endif
> +
> + return r;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_mem2mem2_v4l2_register);
> +
> +int mtk_fd_v4l2_unregister(struct mtk_fd_dev *dev)
> +{
> + struct mtk_fd_mem2mem2_device *m2m2 = &dev->mem2mem2;
> + unsigned int i;
> +
> + for (i = 0; i < m2m2->num_nodes; i++) {
> + video_unregister_device(&m2m2->nodes[i].vdev);
> + media_entity_cleanup(&m2m2->nodes[i].vdev.entity);
> + mutex_destroy(&m2m2->nodes[i].lock);
> + }
> +
> + v4l2_device_unregister_subdev(&m2m2->subdev);
> + media_entity_cleanup(&m2m2->subdev.entity);
> + kfree(m2m2->subdev_pads);
> + v4l2_device_unregister(m2m2->v4l2_dev);
> + media_device_unregister(m2m2->media_dev);
> +#if KERNEL_VERSION(4, 5, 0) <= MTK_FD_KERNEL_BASE_VERSION
> + media_device_cleanup(m2m2->media_dev);
> +#endif
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_v4l2_unregister);
> +
> +void mtk_fd_v4l2_buffer_done(struct vb2_buffer *vb,
> + enum vb2_buffer_state state)
> +{
> + struct mtk_fd_mem2mem2_buffer *b =
> + container_of(vb, struct mtk_fd_mem2mem2_buffer, vbb.vb2_buf);
> +
> + list_del(&b->list);
> + vb2_buffer_done(&b->vbb.vb2_buf, state);
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_v4l2_buffer_done);
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.c b/drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.c
> new file mode 100644
> index 0000000..bd447b7
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.c
> @@ -0,0 +1,114 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2018 MediaTek Inc.
> + * Author: Frederic Chen <frederic.chen@xxxxxxxxxxxx>
> + *
> + * 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.
> + */
> +
> +#include <linux/device.h>
> +#include <linux/platform_device.h>
> +#include "mtk_fd.h"
> +#include "mtk_fd-ctx.h"
> +#include "mtk_fd-v4l2.h"
> +
> +static struct mtk_fd_ctx_format fd_param_fmts[] = {
> + {
> + .fmt.meta = {
> + .dataformat = V4L2_META_FMT_MTISP_PARAMS,
> + .max_buffer_size = 1024 * 30,
> + },
> + },
> +};
> +
> +static struct mtk_fd_ctx_format in_fmts[] = {
> + {
> + .fmt.img = {
> + .pixelformat = V4L2_PIX_FMT_VYUY,
> + .depth = { 16 },
> + .row_depth = { 16 },
> + .num_planes = 1,
> + },
> + },
> + {
> + .fmt.img = {
> + .pixelformat = V4L2_PIX_FMT_YUYV,
> + .depth = { 16 },
> + .row_depth = { 16 },
> + .num_planes = 1,
> + },
> + },
> + {
> + .fmt.img = {
> + .pixelformat = V4L2_PIX_FMT_YVYU,
> + .depth = { 16 },
> + .row_depth = { 16 },
> + .num_planes = 1,
> + },
> + },
> + {
> + .fmt.img = {
> + .pixelformat = V4L2_PIX_FMT_UYVY,
> + .depth = { 16 },
> + .row_depth = { 16 },
> + .num_planes = 1,
> + },
> + },
> +};
> +
> +static struct mtk_fd_ctx_queue_desc
> +output_queues[MTK_FD_CTX_FD_TOTAL_OUTPUT] = {
> + {
> + .id = MTK_FD_CTX_FD_YUV_IN,
> + .name = "FDInput",
> + .capture = 0,
> + .image = 1,
> + .fmts = in_fmts,
> + .num_fmts = ARRAY_SIZE(in_fmts),
> + .default_fmt_idx = 1,
> + },
> + {
> + .id = MTK_FD_CTX_FD_CONFIG_IN,
> + .name = "FDConfig",
> + .capture = 0,
> + .image = 0,
> + .fmts = fd_param_fmts,
> + .num_fmts = 1,
> + .default_fmt_idx = 0,
> + },
> +};
> +
> +static struct mtk_fd_ctx_queue_desc
> +capture_queues[MTK_FD_CTX_FD_TOTAL_CAPTURE] = {
> + {
> + .id = MTK_FD_CTX_FD_OUT,
> + .name = "FDOutput",
> + .capture = 1,
> + .image = 0,
> + .fmts = fd_param_fmts,
> + .num_fmts = 1,
> + .default_fmt_idx = 0,
> + },
> +};
> +
> +static struct mtk_fd_ctx_queues_setting queues_setting = {
> + .master = MTK_FD_CTX_FD_OUT,
> + .output_queue_descs = output_queues,
> + .total_output_queues = MTK_FD_CTX_FD_TOTAL_OUTPUT,
> + .capture_queue_descs = capture_queues,
> + .total_capture_queues = MTK_FD_CTX_FD_TOTAL_CAPTURE,
> +};
> +
> +int mtk_fd_ctx_fd_init(struct mtk_fd_ctx *ctx)
> +{
> + /* Initialize main data structure */
> + return mtk_fd_ctx_core_queue_setup(ctx, &queues_setting);
> +}
> +EXPORT_SYMBOL_GPL(mtk_fd_ctx_fd_init);
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.h b/drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.h
> new file mode 100644
> index 0000000..0702abc
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.h
> @@ -0,0 +1,36 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2018 MediaTek Inc.
> + * Author: Frederic Chen <frederic.chen@xxxxxxxxxxxx>
> + *
> + * 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_FD_V4L2__
> +#define __MTK_FD_V4L2__
> +
> +#include <linux/types.h>
> +#include "mtk_fd-ctx.h"
> +
> +#define MTK_FD_DEV_NAME "MTK-FD-V4L2"
> +
> +/* Input: YUV image */
> +#define MTK_FD_CTX_FD_YUV_IN 0
> +/* Input: FD Configuration */
> +#define MTK_FD_CTX_FD_CONFIG_IN 1
> +#define MTK_FD_CTX_FD_TOTAL_OUTPUT 2
> +
> +/* OUT: FD output devices*/
> +#define MTK_FD_CTX_FD_OUT 2
> +#define MTK_FD_CTX_FD_TOTAL_CAPTURE 1
> +
> +int mtk_fd_ctx_fd_init(struct mtk_fd_ctx *ctx);
> +
> +#endif /*__MTK_FD_V4L2__*/
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd.c b/drivers/media/platform/mtk-isp/fd/mtk_fd.c
> new file mode 100644
> index 0000000..7e2fd00
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd.c
> @@ -0,0 +1,730 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2015 MediaTek Inc.
> + *
> + * 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.
> + */
> +
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/kernel.h>
> +#include <linux/types.h>
> +#include <linux/device.h>
> +#include <linux/kdev_t.h>
> +
> +#include <linux/platform_device.h>
> +#include <linux/dma-mapping.h>
> +#include <linux/mm_types.h>
> +#include <linux/mm.h>
> +#include <linux/jiffies.h>
> +#include <linux/sched.h>
> +#include <linux/uaccess.h>
> +#include <asm/page.h>
> +#include <linux/vmalloc.h>
> +#include <linux/interrupt.h>
> +#include <linux/wait.h>
> +
> +#include <linux/of_platform.h>
> +#include <linux/of_irq.h>
> +#include <linux/of_address.h>
> +#include <linux/of_device.h>
> +
> +#include "mtk_fd.h"
> +#include "mtk_fd-core.h"
> +
> +#include "mtk_vpu.h"
> +
> +#include <linux/pm_runtime.h>
> +#include <linux/clk.h>
> +
> +#ifdef CONFIG_PM_WAKELOCKS
> +#include <linux/pm_wakeup.h>
> +#else
> +#include <linux/wakelock.h>
> +#endif
> +
> +#define FD_DRVNAME "mtk-fd"
> +
> +static const struct of_device_id mtk_fd_of_ids[] = {
> + /* Remider: Add this device node manually in .dtsi */
> + { .compatible = "mediatek,fd", },
> + {}
> +};
> +MODULE_DEVICE_TABLE(of, mtk_fd_of_ids);
> +
> +static void mtk_fd_prepare_enable_ccf_clock(struct mtk_fd_drv_dev *fd_hw_dev)
> +{
> + int ret;
> +
> + pm_runtime_get_sync(fd_hw_dev->larb_dev);
> + ret = clk_prepare_enable(fd_hw_dev->fd_clk);
> + if (ret)
> + dev_err(&fd_hw_dev->pdev->dev,
> + "cannot prepare and enable CG_IMGSYS_FD clock\n");
> +}
> +
> +static void mtk_fd_disable_unprepare_ccf_clock(struct mtk_fd_drv_dev *fd_hw_dev)
> +{
> + clk_disable_unprepare(fd_hw_dev->fd_clk);
> +}
> +
> +static int mtk_fd_clk_ctrl(struct mtk_fd_drv_dev *fd_hw_dev, int en)
> +{
> + if (en)
> + mtk_fd_prepare_enable_ccf_clock(fd_hw_dev);
> + else
> + mtk_fd_disable_unprepare_ccf_clock(fd_hw_dev);
> +
> + dev_dbg(&fd_hw_dev->pdev->dev, "clock en: %d\n", en);
> +
> + return 0;
> +}
> +
> +static int mtk_fd_wait_irq(struct mtk_fd_drv_dev *fd_hw_dev)
> +{
> + int timeout;
> +
> + timeout = wait_event_interruptible_timeout
> + (fd_hw_dev->wq,
> + (fd_hw_dev->fd_irq_result & FD_IRQ_MASK),
> + mtk_fd_us_to_jiffies(1 * 1000000));
> +
> + if (timeout == 0) {
> + dev_err(&fd_hw_dev->pdev->dev,
> + "%s timeout, %d\n",
> + __func__, fd_hw_dev->fd_irq_result);
> + return -EAGAIN;
> + }
> +
> + dev_dbg(&fd_hw_dev->pdev->dev, "irq_res: 0x%8x\n",
> + fd_hw_dev->fd_irq_result);
> +
> + if (timeout != 0 && !(fd_hw_dev->fd_irq_result & FD_IRQ_MASK)) {
> + dev_err(&fd_hw_dev->pdev->dev,
> + "%s interrupted by system signal, return value(%d)\n",
> + __func__, timeout);
> + return -ERESTARTSYS;
> + }
> +
> + if (!(fd_hw_dev->fd_irq_result & FD_IRQ_MASK)) {
> + dev_err(&fd_hw_dev->pdev->dev,
> + "%s Not FD, %d\n",
> + __func__, fd_hw_dev->fd_irq_result);
> + return -1;
> + }
> +
> + fd_hw_dev->fd_irq_result = 0;
> +
> + return 0;
> +}
> +
> +static int mtk_fd_send_ipi_init(struct platform_device *pdev,
> + struct fd_buffer *scp_mem)
> +{
> + struct ipi_message fd_init_msg;
> +
> + fd_init_msg.cmd_id = FD_CMD_INIT;
> + fd_init_msg.fd_manager = *scp_mem;
> +
> + vpu_ipi_send(pdev, IPI_FD_CMD, &fd_init_msg, sizeof(fd_init_msg));
> +
> + return 0;
> +}
> +
> +static int mtk_fd_send_ipi_cmd(struct platform_device *pdev,
> + struct v4l2_fd_param *fd_param)
> +{
> + struct ipi_message fd_ipi_msg;
> +
> + fd_ipi_msg.cmd_id = FD_CMD_ENQ;
> + fd_ipi_msg.fd_param = *fd_param;
> +
> + vpu_ipi_send_sync_async(pdev, IPI_FD_CMD, &fd_ipi_msg,
> + sizeof(fd_ipi_msg), 0);
> + return 0;
> +}
> +
> +static irqreturn_t mtk_fd_irq(int irq, void *dev_addr)
> +{
> + struct mtk_fd_drv_dev *fd_hw_dev;
> +
> + fd_hw_dev = (struct mtk_fd_drv_dev *)dev_addr;
> + fd_hw_dev->fd_irq_result = FD_RD32(fd_hw_dev->fd_base + FD_INT);
> + wake_up_interruptible(&fd_hw_dev->wq);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int mtk_fd_do_callback(struct mtk_fd_drv_dev *fd_hw_dev,
> + unsigned int frame_state)
> +{
> + struct mtk_fd_ctx_finish_param fparam;
> + struct mtk_isp_fd_drv_data *drv_data;
> + struct device *dev;
> + int ret = 0;
> +
> + drv_data = mtk_fd_hw_dev_to_drv(fd_hw_dev);
> + dev = &drv_data->fd_hw_dev.pdev->dev;
> +
> + fparam.state = frame_state;
> + fparam.frame_id = fd_hw_dev->fd_ctx.frame_id;
> + dev_dbg(dev, "frame_id(%d)\n", fparam.frame_id);
> +
> + ret = mtk_fd_ctx_core_job_finish(&drv_data->fd_dev.ctx, &fparam);
> + if (ret)
> + dev_err(dev, "frame_id(%d), finish op failed: %d\n",
> + fparam.frame_id, ret);
> + else
> + fd_hw_dev->state = FD_CBD;
> +
> + return ret;
> +}
> +
> +static int mtk_fd_dequeue(struct mtk_fd_drv_dev *fd_hw_dev,
> + struct v4l2_fd_param *fd_param)
> +{
> + struct mtk_isp_fd_drv_data *drv_data;
> + struct fd_user_output *fd_output;
> + u32 num = 0, i = 0;
> +
> + dev_dbg(&fd_hw_dev->pdev->dev, "-E. %s.\n", __func__);
> +
> + if ((uint64_t)fd_hw_dev->fd_base < VA_OFFSET) {
> + dev_info(&fd_hw_dev->pdev->dev,
> + "-X. %s. fd_base_error: %p\n",
> + __func__, fd_hw_dev->fd_base);
> + return -1;
> + }
> +
> + num = FD_RD32(fd_hw_dev->fd_base + FD_RESULT);
> + FD_WR32(0x0, fd_hw_dev->fd_base + FD_INT_EN);
> + fd_output = (struct fd_user_output *)fd_param->fd_user_result.va;
> + fd_output->face_number = num;
> +
> + drv_data = mtk_fd_hw_dev_to_drv(fd_hw_dev);
> + if ((uint64_t)drv_data < VA_OFFSET) {
> + dev_dbg(&fd_hw_dev->pdev->dev,
> + "-X. %s. fd_base_error\n", __func__);
> + return -1;
> + }
> + mtk_fd_do_callback(fd_hw_dev, MTK_FD_CTX_FRAME_DATA_DONE);
> +
> + for (i = 0; i < num; i++) {
> + dev_dbg(&fd_hw_dev->pdev->dev,
> + "id:%d, typ:%d, x0:%d, y0:%d, x1:%d, y1:%d, fcv:0x%x\n",
> + fd_output->face[i].face_idx,
> + fd_output->face[i].type,
> + fd_output->face[i].x0,
> + fd_output->face[i].y0,
> + fd_output->face[i].x1,
> + fd_output->face[i].y1,
> + fd_output->face[i].fcv);
> + }
> + dev_dbg(&fd_hw_dev->pdev->dev, "-X. %s.\n", __func__);
> + return 0;
> +}
> +
> +static int mtk_fd_manager_buf_init(struct mtk_fd_drv_dev *fd_hw_dev)
> +{
> + struct fd_manager_ctx *manager_ctx;
> +
> + manager_ctx = (struct fd_manager_ctx *)fd_hw_dev->fd_ctx.scp_mem.va;
> + manager_ctx->rs_result = fd_hw_dev->fd_ctx.rs_result;
> +
> + return 0;
> +}
> +
> +static int mtk_fd_alloc_rs_buf(struct mtk_fd_drv_dev *fd_hw_dev)
> +{
> + u64 va = 0;
> + dma_addr_t dma_handle = 0;
> + u32 size = RS_BUF_SIZE_MAX;
> +
> + va = (uint64_t)dma_alloc_coherent(&fd_hw_dev->pdev->dev, size,
> + &dma_handle, GFP_KERNEL);
> +
> + dev_dbg(&fd_hw_dev->pdev->dev, "rsbuffer size: %u\n", size);
> + dev_dbg(&fd_hw_dev->pdev->dev, "va = 0x%llx, iova = 0x%x\n", va,
> + dma_handle);
> +
> + if (va == 0) {
> + dev_err(&fd_hw_dev->pdev->dev, "dma_alloc null va!\n");
> + return -1;
> + }
> +
> + memset((uint8_t *)va, 0, size);
> +
> + fd_hw_dev->fd_ctx.rs_result.va = va;
> + fd_hw_dev->fd_ctx.rs_result.iova = dma_handle;
> +
> + return 0;
> +}
> +
> +static int mtk_fd_get_reserve_mem(struct mtk_fd_drv_dev *fd_hw_dev)
> +{
> + phys_addr_t scp_mem_pa;
> + u64 scp_mem_va;
> + u32 scp_mem_iova;
> + u32 size = 0, size_align = 0;
> + struct sg_table *sgt;
> + int n_pages = 0, i = 0, ret = 0;
> + struct page **pages = NULL;
> + struct mtk_fd_drv_ctx *fd_ctx;
> + struct platform_device *pdev = fd_hw_dev->pdev;
> +
> + fd_ctx = &fd_hw_dev->fd_ctx;
> +
> + scp_mem_iova = 0;
> + scp_mem_va = vpu_get_reserve_mem_virt(FD_MEM_ID);
> + scp_mem_pa = vpu_get_reserve_mem_phys(FD_MEM_ID);
> + size = (u32)vpu_get_reserve_mem_size(FD_MEM_ID);
> +
> + dev_dbg(&pdev->dev, "fd_scp_mem va: 0x%llx, pa: 0x%llx, sz:0x%x\n",
> + scp_mem_va, (u64)scp_mem_pa, size);
> +
> + if (scp_mem_va != 0 && size > 0)
> + memset((void *)scp_mem_va, 0, size);
> +
> + /* get iova */
> + sgt = &fd_ctx->sgtable;
> + sg_alloc_table(sgt, 1, GFP_KERNEL);
> +
> + size_align = round_up(size, PAGE_SIZE);
> + n_pages = size_align >> PAGE_SHIFT;
> +
> + pages = kmalloc_array(n_pages, sizeof(struct page *), GFP_KERNEL);
> +
> + for (i = 0; i < n_pages; i++)
> + pages[i] = phys_to_page(scp_mem_pa + i * PAGE_SIZE);
> + ret = sg_alloc_table_from_pages(sgt, pages, n_pages,
> + 0, size_align, GFP_KERNEL);
> +
> + if (ret) {
> + dev_err(&pdev->dev, "failed to get allocate sg table\n");
> + kfree(pages);
> + return ret;
> + }
> +
> + dma_map_sg_attrs(&pdev->dev, sgt->sgl, sgt->nents,
> + DMA_BIDIRECTIONAL, DMA_ATTR_SKIP_CPU_SYNC);
> + scp_mem_iova = sg_dma_address(sgt->sgl);
> + kfree(pages);
> +
> + dev_dbg(&fd_hw_dev->pdev->dev, "scpmem size:%u,0x%X\n", size, size);
> + dev_dbg(&fd_hw_dev->pdev->dev, "pa:0x%08X\n", (u32)scp_mem_pa);
> + dev_dbg(&fd_hw_dev->pdev->dev, "va:0x%16llX\n", (u64)scp_mem_va);
> + dev_dbg(&fd_hw_dev->pdev->dev, "iova:0x%08X\n", (u32)scp_mem_iova);
> +
> + fd_ctx->scp_mem.pa = scp_mem_pa;
> + fd_ctx->scp_mem.va = scp_mem_va;
> + fd_ctx->scp_mem.iova = scp_mem_iova;
> +
> + return 0;
> +}
> +
> +static int mtk_fd_load_vpu(struct mtk_fd_drv_dev *fd_hw_dev)
> +{
> + struct mtk_fd_drv_ctx *fd_ctx;
> + int ret = 0;
> +
> + fd_ctx = &fd_hw_dev->fd_ctx;
> +
> + /* init vpu */
> + fd_ctx->vpu_pdev = vpu_get_plat_device(fd_hw_dev->pdev);
> +
> + if (!fd_ctx->vpu_pdev) {
> + dev_err(&fd_hw_dev->pdev->dev,
> + "Failed to get VPU device\n");
> + return -EINVAL;
> + }
> +
> + ret = vpu_load_firmware(fd_ctx->vpu_pdev);
> + if (ret < 0) {
> + /**
> + * Return 0 if downloading firmware successfully,
> + * otherwise it is failed
> + */
> + dev_err(&fd_hw_dev->pdev->dev,
> + "vpu_load_firmware failed!");
> + return -EINVAL;
> + }
> + return ret;
> +}
> +
> +static int mtk_fd_open_context(struct mtk_fd_drv_dev *fd_hw_dev)
> +{
> + struct mtk_fd_drv_ctx *fd_ctx;
> +
> + fd_ctx = &fd_hw_dev->fd_ctx;
> +
> + mtk_fd_load_vpu(fd_hw_dev);
> +
> + mtk_fd_get_reserve_mem(fd_hw_dev);
> + mtk_fd_alloc_rs_buf(fd_hw_dev);
> + mtk_fd_manager_buf_init(fd_hw_dev);
> +
> + mtk_fd_send_ipi_init(fd_ctx->vpu_pdev, &fd_ctx->scp_mem);
> + return 0;
> +}
> +
> +static int mtk_fd_release_context(struct mtk_fd_drv_dev *fd_hw_dev)
> +{
> + struct mtk_fd_drv_ctx *fd_ctx;
> +
> + fd_ctx = &fd_hw_dev->fd_ctx;
> +
> + atomic_set(&fd_ctx->fd_user_cnt, 0);
> + atomic_set(&fd_ctx->fd_stream_cnt, 0);
> + atomic_set(&fd_ctx->fd_enque_cnt, 0);
> + sg_free_table(&fd_ctx->sgtable);
> +
> + return 0;
> +}
> +
> +int mtk_fd_open(struct platform_device *pdev)
> +{
> + int ret = 0;
> + s32 usercount;
> + struct mtk_fd_drv_dev *fd_hw_dev;
> + struct mtk_isp_fd_drv_data *fd_drv;
> + struct mtk_fd_drv_ctx *fd_ctx;
> +
> + dev_dbg(&pdev->dev, "- E. %s.\n", __func__);
> +
> + if (!pdev) {
> + dev_err(&fd_hw_dev->pdev->dev, "platform device is NULL\n");
> + return -EINVAL;
> + }
> +
> + fd_drv = dev_get_drvdata(&pdev->dev);
> + fd_hw_dev = &fd_drv->fd_hw_dev;
> + fd_ctx = &fd_hw_dev->fd_ctx;
> + dev_dbg(&fd_hw_dev->pdev->dev, "open fd_hw_dev = 0x%p\n", fd_hw_dev);
> + dev_dbg(&fd_hw_dev->pdev->dev, "open fd_drv = 0x%p\n", fd_drv);
> +
> + usercount = atomic_inc_return(&fd_hw_dev->fd_ctx.fd_user_cnt);
> +
> + if (usercount == 1) {
> + /* Enable clock */
> + pm_runtime_get_sync(&fd_hw_dev->pdev->dev);
> +
> + mtk_fd_open_context(fd_hw_dev);
> + fd_hw_dev->state = FD_INI;
> + fd_hw_dev->streaming = STREAM_OFF;
> + }
> +
> + dev_dbg(&fd_hw_dev->pdev->dev, "usercount = %d",
> + atomic_read(&fd_ctx->fd_user_cnt));
> +
> + dev_dbg(&fd_hw_dev->pdev->dev, "X. %s\n", __func__);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL(mtk_fd_open);
> +
> +int mtk_fd_streamon(struct platform_device *pdev, u16 id)
> +{
> + int ret = 0;
> + struct mtk_fd_drv_dev *fd_hw_dev;
> + struct mtk_isp_fd_drv_data *fd_drv;
> +
> + fd_drv = dev_get_drvdata(&pdev->dev);
> + fd_hw_dev = &fd_drv->fd_hw_dev;
> +
> + dev_dbg(&pdev->dev, "- E. %s\n", __func__);
> + fd_hw_dev->streaming = STREAM_ON;
> + atomic_inc_return(&fd_hw_dev->fd_ctx.fd_stream_cnt);
> +
> + dev_dbg(&pdev->dev, "- X. %s\n", __func__);
> + return ret;
> +}
> +EXPORT_SYMBOL(mtk_fd_streamon);
> +
> +int mtk_fd_enqueue(struct platform_device *pdev,
> + struct v4l2_fd_param *fd_param)
> +{
> + struct mtk_fd_drv_dev *fd_hw_dev;
> + struct mtk_fd_drv_ctx *fd_ctx;
> + struct mtk_isp_fd_drv_data *fd_drv;
> +
> + dev_dbg(&pdev->dev, "- E. %s\n", __func__);
> + fd_drv = dev_get_drvdata(&pdev->dev);
> + fd_hw_dev = &fd_drv->fd_hw_dev;
> + fd_ctx = &fd_hw_dev->fd_ctx;
> +
> + fd_ctx->frame_id = fd_param->frame_id;
> +
> + if (fd_hw_dev->streaming == STREAM_OFF || fd_hw_dev->state == FD_ENQ) {
> + dev_err(&fd_hw_dev->pdev->dev, "enqueue before stream on!\n");
> + return mtk_fd_do_callback(fd_hw_dev,
> + MTK_FD_CTX_FRAME_DATA_ERROR);
> + }
> +
> + fd_hw_dev->state = FD_ENQ;
> + atomic_inc_return(&fd_ctx->fd_enque_cnt);
> +
> + if (mtk_fd_send_ipi_cmd(fd_ctx->vpu_pdev, fd_param))
> + return -2;
> +
> + if (mtk_fd_wait_irq(fd_hw_dev))
> + return mtk_fd_do_callback(fd_hw_dev,
> + MTK_FD_CTX_FRAME_DATA_ERROR);
> +
> + mtk_fd_dequeue(fd_hw_dev, fd_param);
> +
> + dev_dbg(&pdev->dev, "- E. %s\n", __func__);
> + return 0;
> +}
> +EXPORT_SYMBOL(mtk_fd_enqueue);
> +
> +int mtk_fd_release(struct platform_device *pdev)
> +{
> + int ret = 0;
> + struct mtk_fd_drv_dev *fd_hw_dev;
> + struct mtk_isp_fd_drv_data *fd_drv;
> +
> + fd_drv = dev_get_drvdata(&pdev->dev);
> + fd_hw_dev = &fd_drv->fd_hw_dev;
> + dev_dbg(&fd_hw_dev->pdev->dev, "- E. %s\n", __func__);
> +
> + if (!pdev) {
> + dev_err(&fd_hw_dev->pdev->dev, "platform device is NULL\n");
> + return -EINVAL;
> + }
> +
> + dev_info(&fd_hw_dev->pdev->dev, "release fd_hw_dev: 0x%p\n", fd_hw_dev);
> +
> + if (atomic_dec_and_test(&fd_hw_dev->fd_ctx.fd_user_cnt)) {
> + if (fd_hw_dev->state == FD_ENQ)
> + mtk_fd_wait_irq(fd_hw_dev);
> +
> + mtk_fd_release_context(fd_hw_dev);
> +
> + pm_runtime_put_sync(&fd_hw_dev->pdev->dev);
> + }
> + dev_info(&fd_hw_dev->pdev->dev, "usercount = %d\n",
> + atomic_read(&fd_hw_dev->fd_ctx.fd_user_cnt));
> +
> + dev_dbg(&fd_hw_dev->pdev->dev, "- X. %s\n", __func__);
> + return ret;
> +}
> +EXPORT_SYMBOL(mtk_fd_release);
> +
> +int mtk_fd_streamoff(struct platform_device *pdev, u16 id)
> +{
> + int ret = 0;
> + struct mtk_fd_drv_dev *fd_hw_dev;
> + struct mtk_isp_fd_drv_data *fd_drv;
> +
> + fd_drv = dev_get_drvdata(&pdev->dev);
> + fd_hw_dev = &fd_drv->fd_hw_dev;
> +
> + dev_dbg(&pdev->dev, "- E. %s\n", __func__);
> +
> + if (fd_hw_dev->state == FD_ENQ)
> + mtk_fd_wait_irq(fd_hw_dev);
> +
> + fd_hw_dev->streaming = STREAM_OFF;
> + atomic_dec_return(&fd_hw_dev->fd_ctx.fd_stream_cnt);
> +
> + dev_dbg(&pdev->dev, "- X. %s\n", __func__);
> + return ret;
> +}
> +EXPORT_SYMBOL(mtk_fd_streamoff);
> +
> +static struct mtk_fd_ctx_desc mtk_isp_ctx_desc_fd = {
> + "proc_device_fd", mtk_fd_ctx_fd_init,};
> +
> +static int mtk_fd_probe(struct platform_device *pdev)
> +{
> + struct mtk_isp_fd_drv_data *fd_drv;
> + struct mtk_fd_drv_dev *fd_hw_dev;
> + struct mtk_fd_drv_ctx *fd_ctx;
> + struct device_node *node;
> + struct platform_device *larb_pdev;
> + int irq_num = 0;
> + int ret = 0;
> +
> + dev_info(&pdev->dev, "E. %s.\n", __func__);
> +
> + fd_drv = devm_kzalloc(&pdev->dev, sizeof(*fd_drv), GFP_KERNEL);
> +
> + if (!fd_drv)
> + return -ENOMEM;
> +
> + dev_set_drvdata(&pdev->dev, fd_drv);
> + fd_hw_dev = &fd_drv->fd_hw_dev;
> +
> + if (!fd_hw_dev) {
> + dev_err(&pdev->dev, "Unable to allocate fd_hw_dev\n");
> + return -ENOMEM;
> + }
> +
> + dev_info(&pdev->dev, "open fd_hw_dev = 0x%p\n", fd_hw_dev);
> + dev_info(&pdev->dev, "open fd_drv = 0x%p\n", fd_drv);
> +
> + fd_hw_dev->pdev = pdev;
> + fd_ctx = &fd_hw_dev->fd_ctx;
> +
> + irq_num = irq_of_parse_and_map(pdev->dev.of_node, FD_IRQ_IDX);
> + ret = request_irq(irq_num, (irq_handler_t)mtk_fd_irq,
> + IRQF_TRIGGER_NONE, FD_DRVNAME, fd_hw_dev);
> + if (ret) {
> + dev_info(&pdev->dev, "%s request_irq fail, irq=%d\n",
> + __func__, irq_num);
> + return ret;
> + }
> + dev_info(&pdev->dev, "irq_num=%d\n", irq_num);
> +
> + node = of_parse_phandle(pdev->dev.of_node, "mediatek,larb", 0);
> + if (!node) {
> + dev_err(&pdev->dev, "no mediatek, larb found");
> + return -EINVAL;
> + }
> + larb_pdev = of_find_device_by_node(node);
> + if (!larb_pdev) {
> + dev_err(&pdev->dev, "no mediatek, larb device found");
> + return -EINVAL;
> + }
> + fd_hw_dev->larb_dev = &larb_pdev->dev;
> +
> + node = of_find_compatible_node(NULL, NULL, "mediatek,fd");
> + if (!node) {
> + dev_err(&pdev->dev, "find fd node failed!!!\n");
> + return -ENODEV;
> + }
> + fd_hw_dev->fd_base = of_iomap(node, 0);
> + if (!fd_hw_dev->fd_base) {
> + dev_err(&pdev->dev, "unable to map fd node!!!\n");
> + return -ENODEV;
> + }
> + dev_info(&pdev->dev, "fd_hw_dev->fd_base: %lx\n",
> + (unsigned long)fd_hw_dev->fd_base);
> +
> + /* CCF: Grab clock pointer (struct clk*) */
> + fd_hw_dev->fd_clk = devm_clk_get(&pdev->dev, "FD_CLK_IMG_FD");
> + if (IS_ERR(fd_hw_dev->fd_clk)) {
> + dev_err(&pdev->dev, "cannot get FD_CLK_IMG_FD clock\n");
> + return PTR_ERR(fd_hw_dev->fd_clk);
> + }
> +
> + pm_runtime_enable(&pdev->dev);
> +
> + atomic_set(&fd_ctx->fd_user_cnt, 0);
> + atomic_set(&fd_ctx->fd_stream_cnt, 0);
> + atomic_set(&fd_ctx->fd_enque_cnt, 0);
> +
> + init_waitqueue_head(&fd_hw_dev->wq);
> +
> + fd_hw_dev->fd_irq_result = 0;
> + fd_hw_dev->streaming = STREAM_OFF;
> +
> + ret = mtk_fd_dev_core_init(pdev, &fd_drv->fd_dev, &mtk_isp_ctx_desc_fd);
> +
> + if (ret)
> + dev_err(&pdev->dev, "v4l2 init failed: %d\n", ret);
> +
> + dev_info(&pdev->dev, "X. FD driver probe.\n");
> +
> + return 0;
> +}
> +
> +static int mtk_fd_remove(struct platform_device *pdev)
> +{
> + int i4IRQ = 0;
> + struct mtk_fd_drv_dev *fd_hw_dev = NULL;
> + struct mtk_isp_fd_drv_data *drv_data = dev_get_drvdata(&pdev->dev);
> +
> + dev_info(&fd_hw_dev->pdev->dev, "-E. %s\n", __func__);
> + if (drv_data) {
> + mtk_fd_dev_core_release(pdev, &drv_data->fd_dev);
> + fd_hw_dev = &drv_data->fd_hw_dev;
> + } else {
> + dev_err(&pdev->dev, "Can't find fd driver data\n");
> + return -EINVAL;
> + }
> +
> + mtk_fd_clk_ctrl(fd_hw_dev, clock_off);
> + pm_runtime_disable(&pdev->dev);
> +
> + i4IRQ = platform_get_irq(pdev, 0);
> + free_irq(i4IRQ, NULL);
> + kfree(fd_hw_dev);
> +
> + dev_info(&fd_hw_dev->pdev->dev, "-X. %s\n", __func__);
> + return 0;
> +}
> +
> +static int mtk_fd_suspend(struct device *dev)
> +{
> + struct mtk_isp_fd_drv_data *fd_drv;
> + struct platform_device *pdev;
> + struct mtk_fd_drv_dev *fd_hw_dev;
> +
> + if (pm_runtime_suspended(dev))
> + return 0;
> +
> + fd_drv = dev_get_drvdata(dev);
> + fd_hw_dev = &fd_drv->fd_hw_dev;
> + pdev = fd_hw_dev->pdev;
> +
> + dev_info(&pdev->dev, "E.%s\n", __func__);
> +
> + if (atomic_read(&fd_hw_dev->fd_ctx.fd_user_cnt) > 0) {
> + mtk_fd_clk_ctrl(fd_hw_dev, clock_off);
> + dev_info(&pdev->dev, "Disable clock\n");
> + }
> +
> + dev_info(&pdev->dev, "X.%s\n", __func__);
> + return 0;
> +}
> +
> +static int mtk_fd_resume(struct device *dev)
> +{
> + struct mtk_isp_fd_drv_data *fd_drv;
> + struct platform_device *pdev;
> + struct mtk_fd_drv_dev *fd_hw_dev;
> +
> + if (pm_runtime_suspended(dev))
> + return 0;
> +
> + fd_drv = dev_get_drvdata(dev);
> + fd_hw_dev = &fd_drv->fd_hw_dev;
> + pdev = fd_hw_dev->pdev;
> +
> + dev_info(&pdev->dev, "E.%s\n", __func__);
> +
> + if (atomic_read(&fd_hw_dev->fd_ctx.fd_user_cnt) > 0) {
> + mtk_fd_clk_ctrl(fd_hw_dev, clock_on);
> + dev_info(&pdev->dev, "Enable clock\n");
> + }
> +
> + dev_info(&pdev->dev, "X.%s\n", __func__);
> + return 0;
> +}
> +
> +static const struct dev_pm_ops mtk_fd_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(mtk_fd_suspend, mtk_fd_resume)
> + SET_RUNTIME_PM_OPS(mtk_fd_suspend, mtk_fd_resume, NULL)
> +};
> +
> +static struct platform_driver mtk_fd_driver = {
> + .probe = mtk_fd_probe,
> + .remove = mtk_fd_remove,
> + .driver = {
> + .name = FD_DRVNAME,
> + .of_match_table = mtk_fd_of_ids,
> + .pm = &mtk_fd_pm_ops,
> + }
> +};
> +module_platform_driver(mtk_fd_driver);
> +
> +MODULE_DESCRIPTION("Mediatek FD driver");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/media/platform/mtk-isp/fd/mtk_fd.h b/drivers/media/platform/mtk-isp/fd/mtk_fd.h
> new file mode 100644
> index 0000000..6cae440
> --- /dev/null
> +++ b/drivers/media/platform/mtk-isp/fd/mtk_fd.h
> @@ -0,0 +1,127 @@
> +/* SPDX-License-Identifier: GPL-2.0
> + * Copyright (C) 2015 MediaTek Inc.
> + *
> + * 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_FD_H__
> +#define __MTK_FD_H__
> +
> +#define MTK_FD_MAX_NO (1024)
> +#define MAX_FACE_SEL_NUM (MTK_FD_MAX_NO + 2)
> +
> +/* The max number of face sizes could be detected, for feature scaling */
> +#define FACE_SIZE_NUM_MAX (14)
> +
> +/* FACE_SIZE_NUM_MAX + 1, first scale for input image W/H */
> +#define FD_SCALE_NUM (15)
> +
> +/* Number of Learning data sets */
> +#define LEARNDATA_NUM (18)
> +
> +struct fd_buffer {
> + __u64 va; /* used by APMCU access */
> + __u32 pa; /* used by CM4 access */
> + __u32 iova; /* used by HW access */
> +} __packed;
> +
> +enum fd_img_format {
> + FMT_VYUY = 2,
> + FMT_UYVY,
> + FMT_YVYU,
> + FMT_YUYV,
> +};
> +
> +enum fd_mode {
> + FDMODE,
> + SDMODE,
> + VFB,
> + CFB,
> +};
> +
> +struct fd_face_result {
> + __u64 face_idx:12, type:1, x0:10, y0:10, x1:10, y1:10,
> + fcv:18, rip_dir:4, rop_dir:3, det_size:5;
> +};
> +
> +struct fd_user_output {
> + struct fd_face_result face[MAX_FACE_SEL_NUM];
> + __u16 face_number;
> +};
> +
> +struct v4l2_fd_param {
> + u32 frame_id;
> + u16 src_img_h;
> + u16 src_img_w;
> + struct fd_buffer src_img;
> + struct fd_buffer fd_user_param;
> + struct fd_buffer fd_user_result;
> +} __packed;
> +
> +/**
> + * mtk_fd_enqueue - enqueue to fd driver
> + *
> + * @pdev: FD platform device
> + * @fdvtconfig: frame parameters from V4L2 common Framework
> + *
> + * Enqueue a frame to fd driver.
> + *
> + * Return: Return 0 if successfully, otherwise it is failed.
> + */
> +int mtk_fd_enqueue(struct platform_device *pdev,
> + struct v4l2_fd_param *fd_param);
> +
> +/**
> + * mtk_fd_open -
> + *
> + * @pdev: FD platform device
> + *
> + * Open the FD device driver
> + *
> + * Return: Return 0 if success, otherwise it is failed.
> + */
> +int mtk_fd_open(struct platform_device *pdev);
> +
> +/**
> + * mtk_fd_release -
> + *
> + * @pdev: FD platform device
> + *
> + * Enqueue a frame to FD driver.
> + *
> + * Return: Return 0 if success, otherwise it is failed.
> + */
> +int mtk_fd_release(struct platform_device *pdev);
> +
> +/**
> + * mtk_fd_streamon -
> + *
> + * @pdev: FD platform device
> + * @id: device context id
> + *
> + * Stream on
> + *
> + * Return: Return 0 if success, otherwise it is failed.
> + */
> +int mtk_fd_streamon(struct platform_device *pdev, u16 id);
> +
> +/**
> + * mtk_fd_streamoff -
> + *
> + * @pdev: FD platform device
> + * @id: device context id
> + *
> + * Stream off
> + *
> + * Return: Return 0 if success, otherwise it is failed.
> + */
> +int mtk_fd_streamoff(struct platform_device *pdev, u16 id);
> +
> +#endif/*__MTK_FD_H__*/
> --
> 1.9.1
>
