// SPDX-License-Identifier: GPL-2.0
/*
 * Support for Medifield PNW Camera Imaging ISP subsystem.
 *
 * Copyright (c) 2010 Intel Corporation. All Rights Reserved.
 *
 * Copyright (c) 2010 Silicon Hive www.siliconhive.com.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 *
 */

#include <linux/delay.h>
#include <linux/pci.h>

#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#include <media/videobuf-vmalloc.h>

#include "atomisp_acc.h"
#include "atomisp_cmd.h"
#include "atomisp_common.h"
#include "atomisp_fops.h"
#include "atomisp_internal.h"
#include "atomisp_ioctl.h"
#include "atomisp-regs.h"
#include "atomisp_compat.h"

#include "sh_css_hrt.h"

#include "gp_device.h"
#include "device_access.h"
#include "irq.h"

static const char *DRIVER = "atomisp";  /* max size 15 */
static const char *CARD = "ATOM ISP";   /* max size 31 */

/*
 * FIXME: ISP should not know beforehand all CIDs supported by sensor.
 * Instead, it needs to propagate to sensor unkonwn CIDs.
 */
static struct v4l2_queryctrl ci_v4l2_controls[] = {
        {
                .id = V4L2_CID_AUTO_WHITE_BALANCE,
                .type = V4L2_CTRL_TYPE_BOOLEAN,
                .name = "Automatic White Balance",
                .minimum = 0,
                .maximum = 1,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_RED_BALANCE,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Red Balance",
                .minimum = 0x00,
                .maximum = 0xff,
                .step = 1,
                .default_value = 0x00,
        },
        {
                .id = V4L2_CID_BLUE_BALANCE,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Blue Balance",
                .minimum = 0x00,
                .maximum = 0xff,
                .step = 1,
                .default_value = 0x00,
        },
        {
                .id = V4L2_CID_GAMMA,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Gamma",
                .minimum = 0x00,
                .maximum = 0xff,
                .step = 1,
                .default_value = 0x00,
        },
        {
                .id = V4L2_CID_POWER_LINE_FREQUENCY,
                .type = V4L2_CTRL_TYPE_MENU,
                .name = "Light frequency filter",
                .minimum = 1,
                .maximum = 2,
                .step = 1,
                .default_value = 1,
        },
        {
                .id = V4L2_CID_COLORFX,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Image Color Effect",
                .minimum = 0,
                .maximum = 9,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_COLORFX_CBCR,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Image Color Effect CbCr",
                .minimum = 0,
                .maximum = 0xffff,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_ATOMISP_BAD_PIXEL_DETECTION,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Bad Pixel Correction",
                .minimum = 0,
                .maximum = 1,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_ATOMISP_POSTPROCESS_GDC_CAC,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "GDC/CAC",
                .minimum = 0,
                .maximum = 1,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_ATOMISP_VIDEO_STABLIZATION,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Video Stablization",
                .minimum = 0,
                .maximum = 1,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_ATOMISP_FIXED_PATTERN_NR,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Fixed Pattern Noise Reduction",
                .minimum = 0,
                .maximum = 1,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_ATOMISP_FALSE_COLOR_CORRECTION,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "False Color Correction",
                .minimum = 0,
                .maximum = 1,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_REQUEST_FLASH,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Request flash frames",
                .minimum = 0,
                .maximum = 10,
                .step = 1,
                .default_value = 1,
        },
        {
                .id = V4L2_CID_ATOMISP_LOW_LIGHT,
                .type = V4L2_CTRL_TYPE_BOOLEAN,
                .name = "Low light mode",
                .minimum = 0,
                .maximum = 1,
                .step = 1,
                .default_value = 1,
        },
        {
                .id = V4L2_CID_BIN_FACTOR_HORZ,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Horizontal binning factor",
                .minimum = 0,
                .maximum = 10,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_BIN_FACTOR_VERT,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Vertical binning factor",
                .minimum = 0,
                .maximum = 10,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_2A_STATUS,
                .type = V4L2_CTRL_TYPE_BITMASK,
                .name = "AE and AWB status",
                .minimum = 0,
                .maximum = V4L2_2A_STATUS_AE_READY | V4L2_2A_STATUS_AWB_READY,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_EXPOSURE,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "exposure",
                .minimum = -4,
                .maximum = 4,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_EXPOSURE_ZONE_NUM,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "one-time exposure zone number",
                .minimum = 0x0,
                .maximum = 0xffff,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_EXPOSURE_AUTO_PRIORITY,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Exposure auto priority",
                .minimum = V4L2_EXPOSURE_AUTO,
                .maximum = V4L2_EXPOSURE_APERTURE_PRIORITY,
                .step = 1,
                .default_value = V4L2_EXPOSURE_AUTO,
        },
        {
                .id = V4L2_CID_SCENE_MODE,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "scene mode",
                .minimum = 0,
                .maximum = 13,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_ISO_SENSITIVITY,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "iso",
                .minimum = -4,
                .maximum = 4,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_ISO_SENSITIVITY_AUTO,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "iso mode",
                .minimum = V4L2_ISO_SENSITIVITY_MANUAL,
                .maximum = V4L2_ISO_SENSITIVITY_AUTO,
                .step = 1,
                .default_value = V4L2_ISO_SENSITIVITY_AUTO,
        },
        {
                .id = V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "white balance",
                .minimum = 0,
                .maximum = 9,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_EXPOSURE_METERING,
                .type = V4L2_CTRL_TYPE_MENU,
                .name = "metering",
                .minimum = 0,
                .maximum = 3,
                .step = 1,
                .default_value = 1,
        },
        {
                .id = V4L2_CID_3A_LOCK,
                .type = V4L2_CTRL_TYPE_BITMASK,
                .name = "3a lock",
                .minimum = 0,
                .maximum = V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE
                | V4L2_LOCK_FOCUS,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_TEST_PATTERN,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Test Pattern",
                .minimum = 0,
                .maximum = 0xffff,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_TEST_PATTERN_COLOR_R,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Test Pattern Solid Color R",
                .minimum = INT_MIN,
                .maximum = INT_MAX,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_TEST_PATTERN_COLOR_GR,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Test Pattern Solid Color GR",
                .minimum = INT_MIN,
                .maximum = INT_MAX,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_TEST_PATTERN_COLOR_GB,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Test Pattern Solid Color GB",
                .minimum = INT_MIN,
                .maximum = INT_MAX,
                .step = 1,
                .default_value = 0,
        },
        {
                .id = V4L2_CID_TEST_PATTERN_COLOR_B,
                .type = V4L2_CTRL_TYPE_INTEGER,
                .name = "Test Pattern Solid Color B",
                .minimum = INT_MIN,
                .maximum = INT_MAX,
                .step = 1,
                .default_value = 0,
        },
};

static const u32 ctrls_num = ARRAY_SIZE(ci_v4l2_controls);

/*
 * supported V4L2 fmts and resolutions
 */
const struct atomisp_format_bridge atomisp_output_fmts[] = {
        {
                .pixelformat = V4L2_PIX_FMT_YUV420,
                .depth = 12,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_YUV420,
                .sh_fmt = IA_CSS_FRAME_FORMAT_YUV420,
                .description = "YUV420, planar",
                .planar = true
        }, {
                .pixelformat = V4L2_PIX_FMT_YVU420,
                .depth = 12,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_YVU420,
                .sh_fmt = IA_CSS_FRAME_FORMAT_YV12,
                .description = "YVU420, planar",
                .planar = true
        }, {
                .pixelformat = V4L2_PIX_FMT_YUV422P,
                .depth = 16,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_YUV422P,
                .sh_fmt = IA_CSS_FRAME_FORMAT_YUV422,
                .description = "YUV422, planar",
                .planar = true
        }, {
                .pixelformat = V4L2_PIX_FMT_YUV444,
                .depth = 24,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_YUV444,
                .sh_fmt = IA_CSS_FRAME_FORMAT_YUV444,
                .description = "YUV444"
        }, {
                .pixelformat = V4L2_PIX_FMT_NV12,
                .depth = 12,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_NV12,
                .sh_fmt = IA_CSS_FRAME_FORMAT_NV12,
                .description = "NV12, Y-plane, CbCr interleaved",
                .planar = true
        }, {
                .pixelformat = V4L2_PIX_FMT_NV21,
                .depth = 12,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_NV21,
                .sh_fmt = IA_CSS_FRAME_FORMAT_NV21,
                .description = "NV21, Y-plane, CbCr interleaved",
                .planar = true
        }, {
                .pixelformat = V4L2_PIX_FMT_NV16,
                .depth = 16,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_NV16,
                .sh_fmt = IA_CSS_FRAME_FORMAT_NV16,
                .description = "NV16, Y-plane, CbCr interleaved",
                .planar = true
        }, {
                .pixelformat = V4L2_PIX_FMT_YUYV,
                .depth = 16,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_YUYV,
                .sh_fmt = IA_CSS_FRAME_FORMAT_YUYV,
                .description = "YUYV, interleaved"
        }, {
                .pixelformat = V4L2_PIX_FMT_UYVY,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_UYVY8_1X16,
                .sh_fmt = IA_CSS_FRAME_FORMAT_UYVY,
                .description = "UYVY, interleaved"
        }, { /* This one is for parallel sensors! DO NOT USE! */
                .pixelformat = V4L2_PIX_FMT_UYVY,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
                .sh_fmt = IA_CSS_FRAME_FORMAT_UYVY,
                .description = "UYVY, interleaved"
        }, {
                .pixelformat = V4L2_PIX_FMT_SBGGR16,
                .depth = 16,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_SBGGR16,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 16"
        }, {
                .pixelformat = V4L2_PIX_FMT_SBGGR8,
                .depth = 8,
                .mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 8"
        }, {
                .pixelformat = V4L2_PIX_FMT_SGBRG8,
                .depth = 8,
                .mbus_code = MEDIA_BUS_FMT_SGBRG8_1X8,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 8"
        }, {
                .pixelformat = V4L2_PIX_FMT_SGRBG8,
                .depth = 8,
                .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 8"
        }, {
                .pixelformat = V4L2_PIX_FMT_SRGGB8,
                .depth = 8,
                .mbus_code = MEDIA_BUS_FMT_SRGGB8_1X8,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 8"
        }, {
                .pixelformat = V4L2_PIX_FMT_SBGGR10,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_SBGGR10_1X10,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 10"
        }, {
                .pixelformat = V4L2_PIX_FMT_SGBRG10,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_SGBRG10_1X10,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 10"
        }, {
                .pixelformat = V4L2_PIX_FMT_SGRBG10,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 10"
        }, {
                .pixelformat = V4L2_PIX_FMT_SRGGB10,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_SRGGB10_1X10,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 10"
        }, {
                .pixelformat = V4L2_PIX_FMT_SBGGR12,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_SBGGR12_1X12,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 12"
        }, {
                .pixelformat = V4L2_PIX_FMT_SGBRG12,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_SGBRG12_1X12,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 12"
        }, {
                .pixelformat = V4L2_PIX_FMT_SGRBG12,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 12"
        }, {
                .pixelformat = V4L2_PIX_FMT_SRGGB12,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_SRGGB12_1X12,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RAW,
                .description = "Bayer 12"
        }, {
                .pixelformat = V4L2_PIX_FMT_RGB32,
                .depth = 32,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_RGB32,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RGBA888,
                .description = "32 RGB 8-8-8-8"
        }, {
                .pixelformat = V4L2_PIX_FMT_RGB565,
                .depth = 16,
                .mbus_code = MEDIA_BUS_FMT_BGR565_2X8_LE,
                .sh_fmt = IA_CSS_FRAME_FORMAT_RGB565,
                .description = "16 RGB 5-6-5"
        }, {
                .pixelformat = V4L2_PIX_FMT_JPEG,
                .depth = 8,
                .mbus_code = MEDIA_BUS_FMT_JPEG_1X8,
                .sh_fmt = IA_CSS_FRAME_FORMAT_BINARY_8,
                .description = "JPEG"
        },
#if 0
        {
                /* This is a custom format being used by M10MO to send the RAW data */
                .pixelformat = V4L2_PIX_FMT_CUSTOM_M10MO_RAW,
                .depth = 8,
                .mbus_code = V4L2_MBUS_FMT_CUSTOM_M10MO_RAW,
                .sh_fmt = IA_CSS_FRAME_FORMAT_BINARY_8,
                .description = "Custom RAW for M10MO"
        },
#endif
};

const struct atomisp_format_bridge *
atomisp_get_format_bridge(unsigned int pixelformat)
{
        unsigned int i;

        for (i = 0; i < ARRAY_SIZE(atomisp_output_fmts); i++) {
                if (atomisp_output_fmts[i].pixelformat == pixelformat)
                        return &atomisp_output_fmts[i];
        }

        return NULL;
}

const struct atomisp_format_bridge *
atomisp_get_format_bridge_from_mbus(u32 mbus_code)
{
        unsigned int i;

        for (i = 0; i < ARRAY_SIZE(atomisp_output_fmts); i++) {
                if (mbus_code == atomisp_output_fmts[i].mbus_code)
                        return &atomisp_output_fmts[i];
        }

        return NULL;
}

/*
 * v4l2 ioctls
 * return ISP capabilities
 */
static int atomisp_querycap(struct file *file, void *fh,
                            struct v4l2_capability *cap)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);

        strscpy(cap->driver, DRIVER, sizeof(cap->driver));
        strscpy(cap->card, CARD, sizeof(cap->card));
        snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s", dev_name(isp->dev));

        return 0;
}

/*
 * enum input are used to check primary/secondary camera
 */
static int atomisp_enum_input(struct file *file, void *fh,
                              struct v4l2_input *input)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        int index = input->index;
        struct v4l2_subdev *motor;

        if (index >= isp->input_cnt)
                return -EINVAL;

        if (!isp->inputs[index].camera)
                return -EINVAL;

        memset(input, 0, sizeof(struct v4l2_input));
        strscpy(input->name, isp->inputs[index].camera->name,
                sizeof(input->name));

        /*
         * HACK: append actuator's name to sensor's
         * As currently userspace can't talk directly to subdev nodes, this
         * ioctl is the only way to enum inputs + possible external actuators
         * for 3A tuning purpose.
         */
        if (!IS_ISP2401)
                motor = isp->inputs[index].motor;
        else
                motor = isp->motor;

        if (motor && strlen(motor->name) > 0) {
                const int cur_len = strlen(input->name);
                const int max_size = sizeof(input->name) - cur_len - 1;

                if (max_size > 1) {
                        input->name[cur_len] = '+';
                        strscpy(&input->name[cur_len + 1],
                                motor->name, max_size);
                }
        }

        input->type = V4L2_INPUT_TYPE_CAMERA;
        input->index = index;
        input->reserved[0] = isp->inputs[index].type;
        input->reserved[1] = isp->inputs[index].port;

        return 0;
}

static unsigned int
atomisp_subdev_streaming_count(struct atomisp_sub_device *asd)
{
        return asd->video_out_preview.capq.streaming
               + asd->video_out_capture.capq.streaming
               + asd->video_out_video_capture.capq.streaming
               + asd->video_out_vf.capq.streaming
               + asd->video_in.capq.streaming;
}

unsigned int atomisp_streaming_count(struct atomisp_device *isp)
{
        unsigned int i, sum;

        for (i = 0, sum = 0; i < isp->num_of_streams; i++)
                sum += isp->asd[i].streaming ==
                       ATOMISP_DEVICE_STREAMING_ENABLED;

        return sum;
}

unsigned int atomisp_is_acc_enabled(struct atomisp_device *isp)
{
        unsigned int i;

        for (i = 0; i < isp->num_of_streams; i++)
                if (isp->asd[i].acc.pipeline)
                        return 1;

        return 0;
}

/*
 * get input are used to get current primary/secondary camera
 */
static int atomisp_g_input(struct file *file, void *fh, unsigned int *input)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd;

        rt_mutex_lock(&isp->mutex);
        *input = asd->input_curr;
        rt_mutex_unlock(&isp->mutex);

        return 0;
}

/*
 * set input are used to set current primary/secondary camera
 */
static int atomisp_s_input(struct file *file, void *fh, unsigned int input)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd;
        struct v4l2_subdev *camera = NULL;
        struct v4l2_subdev *motor;
        int ret;

        rt_mutex_lock(&isp->mutex);
        if (input >= ATOM_ISP_MAX_INPUTS || input >= isp->input_cnt) {
                dev_dbg(isp->dev, "input_cnt: %d\n", isp->input_cnt);
                ret = -EINVAL;
                goto error;
        }

        /*
         * check whether the request camera:
         * 1: already in use
         * 2: if in use, whether it is used by other streams
         */
        if (isp->inputs[input].asd && isp->inputs[input].asd != asd) {
                dev_err(isp->dev,
                        "%s, camera is already used by stream: %d\n", __func__,
                        isp->inputs[input].asd->index);
                ret = -EBUSY;
                goto error;
        }

        camera = isp->inputs[input].camera;
        if (!camera) {
                dev_err(isp->dev, "%s, no camera\n", __func__);
                ret = -EINVAL;
                goto error;
        }

        if (atomisp_subdev_streaming_count(asd)) {
                dev_err(isp->dev,
                        "ISP is still streaming, stop first\n");
                ret = -EINVAL;
                goto error;
        }

        /* power off the current owned sensor, as it is not used this time */
        if (isp->inputs[asd->input_curr].asd == asd &&
            asd->input_curr != input) {
                ret = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                                       core, s_power, 0);
                if (ret)
                        dev_warn(isp->dev,
                                 "Failed to power-off sensor\n");
                /* clear the asd field to show this camera is not used */
                isp->inputs[asd->input_curr].asd = NULL;
        }

        /* powe on the new sensor */
        ret = v4l2_subdev_call(isp->inputs[input].camera, core, s_power, 1);
        if (ret) {
                dev_err(isp->dev, "Failed to power-on sensor\n");
                goto error;
        }
        /*
         * Some sensor driver resets the run mode during power-on, thus force
         * update the run mode to sensor after power-on.
         */
        atomisp_update_run_mode(asd);

        /* select operating sensor */
        ret = v4l2_subdev_call(isp->inputs[input].camera, video, s_routing,
                               0, isp->inputs[input].sensor_index, 0);
        if (ret && (ret != -ENOIOCTLCMD)) {
                dev_err(isp->dev, "Failed to select sensor\n");
                goto error;
        }

        if (!IS_ISP2401) {
                motor = isp->inputs[input].motor;
        } else {
                motor = isp->motor;
                if (motor)
                        ret = v4l2_subdev_call(motor, core, s_power, 1);
        }

        if (!isp->sw_contex.file_input && motor)
                ret = v4l2_subdev_call(motor, core, init, 1);

        asd->input_curr = input;
        /* mark this camera is used by the current stream */
        isp->inputs[input].asd = asd;
        rt_mutex_unlock(&isp->mutex);

        return 0;

error:
        rt_mutex_unlock(&isp->mutex);

        return ret;
}

static int atomisp_enum_fmt_cap(struct file *file, void *fh,
                                struct v4l2_fmtdesc *f)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd;
        struct v4l2_subdev_mbus_code_enum code = { 0 };
        unsigned int i, fi = 0;
        int rval;

        rt_mutex_lock(&isp->mutex);
        rval = v4l2_subdev_call(isp->inputs[asd->input_curr].camera, pad,
                                enum_mbus_code, NULL, &code);
        if (rval == -ENOIOCTLCMD) {
                dev_warn(isp->dev,
                         "enum_mbus_code pad op not supported. Please fix your sensor driver!\n");
                //      rval = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                //                              video, enum_mbus_fmt, 0, &code.code);
        }
        rt_mutex_unlock(&isp->mutex);

        if (rval)
                return rval;

        for (i = 0; i < ARRAY_SIZE(atomisp_output_fmts); i++) {
                const struct atomisp_format_bridge *format =
                            &atomisp_output_fmts[i];

                /*
                 * Is the atomisp-supported format is valid for the
                 * sensor (configuration)? If not, skip it.
                 */
                if (format->sh_fmt == IA_CSS_FRAME_FORMAT_RAW
                    && format->mbus_code != code.code)
                        continue;

                /* Found a match. Now let's pick f->index'th one. */
                if (fi < f->index) {
                        fi++;
                        continue;
                }

                strscpy(f->description, format->description,
                        sizeof(f->description));
                f->pixelformat = format->pixelformat;
                return 0;
        }

        return -EINVAL;
}

static int atomisp_g_fmt_cap(struct file *file, void *fh,
                             struct v4l2_format *f)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);

        int ret;

        rt_mutex_lock(&isp->mutex);
        ret = atomisp_get_fmt(vdev, f);
        rt_mutex_unlock(&isp->mutex);
        return ret;
}

static int atomisp_g_fmt_file(struct file *file, void *fh,
                              struct v4l2_format *f)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);

        rt_mutex_lock(&isp->mutex);
        f->fmt.pix = pipe->pix;
        rt_mutex_unlock(&isp->mutex);

        return 0;
}

/* This function looks up the closest available resolution. */
static int atomisp_try_fmt_cap(struct file *file, void *fh,
                               struct v4l2_format *f)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        int ret;

        rt_mutex_lock(&isp->mutex);
        ret = atomisp_try_fmt(vdev, &f->fmt.pix, NULL);
        rt_mutex_unlock(&isp->mutex);
        return ret;
}

static int atomisp_s_fmt_cap(struct file *file, void *fh,
                             struct v4l2_format *f)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        int ret;

        rt_mutex_lock(&isp->mutex);
        if (isp->isp_fatal_error) {
                ret = -EIO;
                rt_mutex_unlock(&isp->mutex);
                return ret;
        }
        ret = atomisp_set_fmt(vdev, f);
        rt_mutex_unlock(&isp->mutex);
        return ret;
}

static int atomisp_s_fmt_file(struct file *file, void *fh,
                              struct v4l2_format *f)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        int ret;

        rt_mutex_lock(&isp->mutex);
        ret = atomisp_set_fmt_file(vdev, f);
        rt_mutex_unlock(&isp->mutex);
        return ret;
}

/*
 * Free videobuffer buffer priv data
 */
void atomisp_videobuf_free_buf(struct videobuf_buffer *vb)
{
        struct videobuf_vmalloc_memory *vm_mem;

        if (!vb)
                return;

        vm_mem = vb->priv;
        if (vm_mem && vm_mem->vaddr) {
                ia_css_frame_free(vm_mem->vaddr);
                vm_mem->vaddr = NULL;
        }
}

/*
 * this function is used to free video buffer queue
 */
static void atomisp_videobuf_free_queue(struct videobuf_queue *q)
{
        int i;

        for (i = 0; i < VIDEO_MAX_FRAME; i++) {
                atomisp_videobuf_free_buf(q->bufs[i]);
                kfree(q->bufs[i]);
                q->bufs[i] = NULL;
        }
}

int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
                                uint16_t stream_id)
{
        struct atomisp_device *isp = asd->isp;
        struct atomisp_s3a_buf *s3a_buf = NULL, *_s3a_buf;
        struct atomisp_dis_buf *dis_buf = NULL, *_dis_buf;
        struct atomisp_metadata_buf *md_buf = NULL, *_md_buf;
        int count;
        struct ia_css_dvs_grid_info *dvs_grid_info =
            atomisp_css_get_dvs_grid_info(&asd->params.curr_grid_info);
        unsigned int i;

        if (list_empty(&asd->s3a_stats) &&
            asd->params.curr_grid_info.s3a_grid.enable) {
                count = ATOMISP_CSS_Q_DEPTH +
                        ATOMISP_S3A_BUF_QUEUE_DEPTH_FOR_HAL;
                dev_dbg(isp->dev, "allocating %d 3a buffers\n", count);
                while (count--) {
                        s3a_buf = kzalloc(sizeof(struct atomisp_s3a_buf), GFP_KERNEL);
                        if (!s3a_buf)
                                goto error;

                        if (atomisp_css_allocate_stat_buffers(
                                asd, stream_id, s3a_buf, NULL, NULL)) {
                                kfree(s3a_buf);
                                goto error;
                        }

                        list_add_tail(&s3a_buf->list, &asd->s3a_stats);
                }
        }

        if (list_empty(&asd->dis_stats) && dvs_grid_info &&
            dvs_grid_info->enable) {
                count = ATOMISP_CSS_Q_DEPTH + 1;
                dev_dbg(isp->dev, "allocating %d dis buffers\n", count);
                while (count--) {
                        dis_buf = kzalloc(sizeof(struct atomisp_dis_buf), GFP_KERNEL);
                        if (!dis_buf)
                                goto error;
                        if (atomisp_css_allocate_stat_buffers(
                                asd, stream_id, NULL, dis_buf, NULL)) {
                                kfree(dis_buf);
                                goto error;
                        }

                        list_add_tail(&dis_buf->list, &asd->dis_stats);
                }
        }

        for (i = 0; i < ATOMISP_METADATA_TYPE_NUM; i++) {
                if (list_empty(&asd->metadata[i]) &&
                    list_empty(&asd->metadata_ready[i]) &&
                    list_empty(&asd->metadata_in_css[i])) {
                        count = ATOMISP_CSS_Q_DEPTH +
                                ATOMISP_METADATA_QUEUE_DEPTH_FOR_HAL;
                        dev_dbg(isp->dev, "allocating %d metadata buffers for type %d\n",
                                count, i);
                        while (count--) {
                                md_buf = kzalloc(sizeof(struct atomisp_metadata_buf),
                                                 GFP_KERNEL);
                                if (!md_buf)
                                        goto error;

                                if (atomisp_css_allocate_stat_buffers(
                                        asd, stream_id, NULL, NULL, md_buf)) {
                                        kfree(md_buf);
                                        goto error;
                                }
                                list_add_tail(&md_buf->list, &asd->metadata[i]);
                        }
                }
        }
        return 0;

error:
        dev_err(isp->dev, "failed to allocate statistics buffers\n");

        list_for_each_entry_safe(dis_buf, _dis_buf, &asd->dis_stats, list) {
                atomisp_css_free_dis_buffer(dis_buf);
                list_del(&dis_buf->list);
                kfree(dis_buf);
        }

        list_for_each_entry_safe(s3a_buf, _s3a_buf, &asd->s3a_stats, list) {
                atomisp_css_free_3a_buffer(s3a_buf);
                list_del(&s3a_buf->list);
                kfree(s3a_buf);

        }

        for (i = 0; i < ATOMISP_METADATA_TYPE_NUM; i++) {
                list_for_each_entry_safe(md_buf, _md_buf, &asd->metadata[i],
                                         list) {
                        atomisp_css_free_metadata_buffer(md_buf);
                        list_del(&md_buf->list);
                        kfree(md_buf);
                }
        }
        return -ENOMEM;
}

/*
 * Initiate Memory Mapping or User Pointer I/O
 */
int __atomisp_reqbufs(struct file *file, void *fh,
                      struct v4l2_requestbuffers *req)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
        struct atomisp_sub_device *asd = pipe->asd;
        struct ia_css_frame_info frame_info;
        struct ia_css_frame *frame;
        struct videobuf_vmalloc_memory *vm_mem;
        u16 source_pad = atomisp_subdev_source_pad(vdev);
        u16 stream_id = atomisp_source_pad_to_stream_id(asd, source_pad);
        int ret = 0, i = 0;

        if (req->count == 0) {
                mutex_lock(&pipe->capq.vb_lock);
                if (!list_empty(&pipe->capq.stream))
                        videobuf_queue_cancel(&pipe->capq);

                atomisp_videobuf_free_queue(&pipe->capq);
                mutex_unlock(&pipe->capq.vb_lock);
                /* clear request config id */
                memset(pipe->frame_request_config_id, 0,
                       VIDEO_MAX_FRAME * sizeof(unsigned int));
                memset(pipe->frame_params, 0,
                       VIDEO_MAX_FRAME *
                       sizeof(struct atomisp_css_params_with_list *));
                return 0;
        }

        ret = videobuf_reqbufs(&pipe->capq, req);
        if (ret)
                return ret;

        atomisp_alloc_css_stat_bufs(asd, stream_id);

        /*
         * for user pointer type, buffers are not really allocated here,
         * buffers are setup in QBUF operation through v4l2_buffer structure
         */
        if (req->memory == V4L2_MEMORY_USERPTR)
                return 0;

        ret = atomisp_get_css_frame_info(asd, source_pad, &frame_info);
        if (ret)
                return ret;

        /*
         * Allocate the real frame here for selected node using our
         * memory management function
         */
        for (i = 0; i < req->count; i++) {
                if (ia_css_frame_allocate_from_info(&frame, &frame_info))
                        goto error;
                vm_mem = pipe->capq.bufs[i]->priv;
                vm_mem->vaddr = frame;
        }

        return ret;

error:
        while (i--) {
                vm_mem = pipe->capq.bufs[i]->priv;
                ia_css_frame_free(vm_mem->vaddr);
        }

        if (asd->vf_frame)
                ia_css_frame_free(asd->vf_frame);

        return -ENOMEM;
}

int atomisp_reqbufs(struct file *file, void *fh,
                    struct v4l2_requestbuffers *req)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        int ret;

        rt_mutex_lock(&isp->mutex);
        ret = __atomisp_reqbufs(file, fh, req);
        rt_mutex_unlock(&isp->mutex);

        return ret;
}

static int atomisp_reqbufs_file(struct file *file, void *fh,
                                struct v4l2_requestbuffers *req)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);

        if (req->count == 0) {
                mutex_lock(&pipe->outq.vb_lock);
                atomisp_videobuf_free_queue(&pipe->outq);
                mutex_unlock(&pipe->outq.vb_lock);
                return 0;
        }

        return videobuf_reqbufs(&pipe->outq, req);
}

/* application query the status of a buffer */
static int atomisp_querybuf(struct file *file, void *fh,
                            struct v4l2_buffer *buf)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);

        return videobuf_querybuf(&pipe->capq, buf);
}

static int atomisp_querybuf_file(struct file *file, void *fh,
                                 struct v4l2_buffer *buf)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);

        return videobuf_querybuf(&pipe->outq, buf);
}

/*
 * Applications call the VIDIOC_QBUF ioctl to enqueue an empty (capturing) or
 * filled (output) buffer in the drivers incoming queue.
 */
static int atomisp_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
{
        static const int NOFLUSH_FLAGS = V4L2_BUF_FLAG_NO_CACHE_INVALIDATE |
                                         V4L2_BUF_FLAG_NO_CACHE_CLEAN;
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
        struct atomisp_sub_device *asd = pipe->asd;
        struct videobuf_buffer *vb;
        struct videobuf_vmalloc_memory *vm_mem;
        struct ia_css_frame_info frame_info;
        struct ia_css_frame *handle = NULL;
        u32 length;
        u32 pgnr;
        int ret = 0;

        rt_mutex_lock(&isp->mutex);
        if (isp->isp_fatal_error) {
                ret = -EIO;
                goto error;
        }

        if (asd->streaming == ATOMISP_DEVICE_STREAMING_STOPPING) {
                dev_err(isp->dev, "%s: reject, as ISP at stopping.\n",
                        __func__);
                ret = -EIO;
                goto error;
        }

        if (!buf || buf->index >= VIDEO_MAX_FRAME ||
            !pipe->capq.bufs[buf->index]) {
                dev_err(isp->dev, "Invalid index for qbuf.\n");
                ret = -EINVAL;
                goto error;
        }

        /*
         * For userptr type frame, we convert user space address to physic
         * address and reprograme out page table properly
         */
        if (buf->memory == V4L2_MEMORY_USERPTR) {
                vb = pipe->capq.bufs[buf->index];
                vm_mem = vb->priv;
                if (!vm_mem) {
                        ret = -EINVAL;
                        goto error;
                }

                length = vb->bsize;
                pgnr = (length + (PAGE_SIZE - 1)) >> PAGE_SHIFT;

                if (vb->baddr == buf->m.userptr && vm_mem->vaddr)
                        goto done;

                if (atomisp_get_css_frame_info(asd,
                                               atomisp_subdev_source_pad(vdev), &frame_info)) {
                        ret = -EIO;
                        goto error;
                }

                ret = ia_css_frame_map(&handle, &frame_info,
                                            (void __user *)buf->m.userptr,
                                            0, pgnr);
                if (ret) {
                        dev_err(isp->dev, "Failed to map user buffer\n");
                        goto error;
                }

                if (vm_mem->vaddr) {
                        mutex_lock(&pipe->capq.vb_lock);
                        ia_css_frame_free(vm_mem->vaddr);
                        vm_mem->vaddr = NULL;
                        vb->state = VIDEOBUF_NEEDS_INIT;
                        mutex_unlock(&pipe->capq.vb_lock);
                }

                vm_mem->vaddr = handle;

                buf->flags &= ~V4L2_BUF_FLAG_MAPPED;
                buf->flags |= V4L2_BUF_FLAG_QUEUED;
                buf->flags &= ~V4L2_BUF_FLAG_DONE;
        } else if (buf->memory == V4L2_MEMORY_MMAP) {
                buf->flags |= V4L2_BUF_FLAG_MAPPED;
                buf->flags |= V4L2_BUF_FLAG_QUEUED;
                buf->flags &= ~V4L2_BUF_FLAG_DONE;

                /*
                 * For mmap, frames were allocated at request buffers
                 */
        }

done:
        if (!((buf->flags & NOFLUSH_FLAGS) == NOFLUSH_FLAGS))
                wbinvd();

        if (!atomisp_is_vf_pipe(pipe) &&
            (buf->reserved2 & ATOMISP_BUFFER_HAS_PER_FRAME_SETTING)) {
                /* this buffer will have a per-frame parameter */
                pipe->frame_request_config_id[buf->index] = buf->reserved2 &
                        ~ATOMISP_BUFFER_HAS_PER_FRAME_SETTING;
                dev_dbg(isp->dev,
                        "This buffer requires per_frame setting which has isp_config_id %d\n",
                        pipe->frame_request_config_id[buf->index]);
        } else {
                pipe->frame_request_config_id[buf->index] = 0;
        }

        pipe->frame_params[buf->index] = NULL;

        rt_mutex_unlock(&isp->mutex);

        ret = videobuf_qbuf(&pipe->capq, buf);
        rt_mutex_lock(&isp->mutex);
        if (ret)
                goto error;

        /* TODO: do this better, not best way to queue to css */
        if (asd->streaming == ATOMISP_DEVICE_STREAMING_ENABLED) {
                if (!list_empty(&pipe->buffers_waiting_for_param)) {
                        atomisp_handle_parameter_and_buffer(pipe);
                } else {
                        atomisp_qbuffers_to_css(asd);

                        if (!IS_ISP2401) {
                                if (!atomisp_is_wdt_running(asd) && atomisp_buffers_queued(asd))
                                        atomisp_wdt_start(asd);
                        } else {
                                if (!atomisp_is_wdt_running(pipe) &&
                                    atomisp_buffers_queued_pipe(pipe))
                                        atomisp_wdt_start_pipe(pipe);
                        }
                }
        }

        /*
         * Workaround: Due to the design of HALv3,
         * sometimes in ZSL or SDV mode HAL needs to
         * capture multiple images within one streaming cycle.
         * But the capture number cannot be determined by HAL.
         * So HAL only sets the capture number to be 1 and queue multiple
         * buffers. Atomisp driver needs to check this case and re-trigger
         * CSS to do capture when new buffer is queued.
         */
        if (asd->continuous_mode->val &&
            atomisp_subdev_source_pad(vdev)
            == ATOMISP_SUBDEV_PAD_SOURCE_CAPTURE &&
            pipe->capq.streaming &&
            !asd->enable_raw_buffer_lock->val &&
            asd->params.offline_parm.num_captures == 1) {
                if (!IS_ISP2401) {
                        asd->pending_capture_request++;
                        dev_dbg(isp->dev, "Add one pending capture request.\n");
                } else {
                        if (asd->re_trigger_capture) {
                                ret = atomisp_css_offline_capture_configure(asd,
                                        asd->params.offline_parm.num_captures,
                                        asd->params.offline_parm.skip_frames,
                                        asd->params.offline_parm.offset);
                                asd->re_trigger_capture = false;
                                dev_dbg(isp->dev, "%s Trigger capture again ret=%d\n",
                                        __func__, ret);

                        } else {
                                asd->pending_capture_request++;
                                asd->re_trigger_capture = false;
                                dev_dbg(isp->dev, "Add one pending capture request.\n");
                        }
                }
        }
        rt_mutex_unlock(&isp->mutex);

        dev_dbg(isp->dev, "qbuf buffer %d (%s) for asd%d\n", buf->index,
                vdev->name, asd->index);

        return ret;

error:
        rt_mutex_unlock(&isp->mutex);
        return ret;
}

static int atomisp_qbuf_file(struct file *file, void *fh,
                             struct v4l2_buffer *buf)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
        int ret;

        rt_mutex_lock(&isp->mutex);
        if (isp->isp_fatal_error) {
                ret = -EIO;
                goto error;
        }

        if (!buf || buf->index >= VIDEO_MAX_FRAME ||
            !pipe->outq.bufs[buf->index]) {
                dev_err(isp->dev, "Invalid index for qbuf.\n");
                ret = -EINVAL;
                goto error;
        }

        if (buf->memory != V4L2_MEMORY_MMAP) {
                dev_err(isp->dev, "Unsupported memory method\n");
                ret = -EINVAL;
                goto error;
        }

        if (buf->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
                dev_err(isp->dev, "Unsupported buffer type\n");
                ret = -EINVAL;
                goto error;
        }
        rt_mutex_unlock(&isp->mutex);

        return videobuf_qbuf(&pipe->outq, buf);

error:
        rt_mutex_unlock(&isp->mutex);

        return ret;
}

static int __get_frame_exp_id(struct atomisp_video_pipe *pipe,
                              struct v4l2_buffer *buf)
{
        struct videobuf_vmalloc_memory *vm_mem;
        struct ia_css_frame *handle;
        int i;

        for (i = 0; pipe->capq.bufs[i]; i++) {
                vm_mem = pipe->capq.bufs[i]->priv;
                handle = vm_mem->vaddr;
                if (buf->index == pipe->capq.bufs[i]->i && handle)
                        return handle->exp_id;
        }
        return -EINVAL;
}

/*
 * Applications call the VIDIOC_DQBUF ioctl to dequeue a filled (capturing) or
 * displayed (output buffer)from the driver's outgoing queue
 */
static int atomisp_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
        struct atomisp_sub_device *asd = pipe->asd;
        struct atomisp_device *isp = video_get_drvdata(vdev);
        int ret = 0;

        rt_mutex_lock(&isp->mutex);

        if (isp->isp_fatal_error) {
                rt_mutex_unlock(&isp->mutex);
                return -EIO;
        }

        if (asd->streaming == ATOMISP_DEVICE_STREAMING_STOPPING) {
                rt_mutex_unlock(&isp->mutex);
                dev_err(isp->dev, "%s: reject, as ISP at stopping.\n",
                        __func__);
                return -EIO;
        }

        rt_mutex_unlock(&isp->mutex);

        ret = videobuf_dqbuf(&pipe->capq, buf, file->f_flags & O_NONBLOCK);
        if (ret) {
                if (ret != -EAGAIN)
                        dev_dbg(isp->dev, "<%s: %d\n", __func__, ret);
                return ret;
        }
        rt_mutex_lock(&isp->mutex);
        buf->bytesused = pipe->pix.sizeimage;
        buf->reserved = asd->frame_status[buf->index];

        /*
         * Hack:
         * Currently frame_status in the enum type which takes no more lower
         * 8 bit.
         * use bit[31:16] for exp_id as it is only in the range of 1~255
         */
        buf->reserved &= 0x0000ffff;
        if (!(buf->flags & V4L2_BUF_FLAG_ERROR))
                buf->reserved |= __get_frame_exp_id(pipe, buf) << 16;
        buf->reserved2 = pipe->frame_config_id[buf->index];
        rt_mutex_unlock(&isp->mutex);

        dev_dbg(isp->dev,
                "dqbuf buffer %d (%s) for asd%d with exp_id %d, isp_config_id %d\n",
                buf->index, vdev->name, asd->index, buf->reserved >> 16,
                buf->reserved2);
        return 0;
}

enum ia_css_pipe_id atomisp_get_css_pipe_id(struct atomisp_sub_device *asd)
{
        if (ATOMISP_USE_YUVPP(asd))
                return IA_CSS_PIPE_ID_YUVPP;

        if (asd->continuous_mode->val) {
                if (asd->run_mode->val == ATOMISP_RUN_MODE_VIDEO)
                        return IA_CSS_PIPE_ID_VIDEO;
                else
                        return IA_CSS_PIPE_ID_PREVIEW;
        }

        /*
         * Disable vf_pp and run CSS in video mode. This allows using ISP
         * scaling but it has one frame delay due to CSS internal buffering.
         */
        if (asd->vfpp->val == ATOMISP_VFPP_DISABLE_SCALER)
                return IA_CSS_PIPE_ID_VIDEO;

        /*
         * Disable vf_pp and run CSS in still capture mode. In this mode
         * CSS does not cause extra latency with buffering, but scaling
         * is not available.
         */
        if (asd->vfpp->val == ATOMISP_VFPP_DISABLE_LOWLAT)
                return IA_CSS_PIPE_ID_CAPTURE;

        switch (asd->run_mode->val) {
        case ATOMISP_RUN_MODE_PREVIEW:
                return IA_CSS_PIPE_ID_PREVIEW;
        case ATOMISP_RUN_MODE_VIDEO:
                return IA_CSS_PIPE_ID_VIDEO;
        case ATOMISP_RUN_MODE_STILL_CAPTURE:
        default:
                return IA_CSS_PIPE_ID_CAPTURE;
        }
}

static unsigned int atomisp_sensor_start_stream(struct atomisp_sub_device *asd)
{
        struct atomisp_device *isp = asd->isp;

        if (isp->inputs[asd->input_curr].camera_caps->
            sensor[asd->sensor_curr].stream_num > 1) {
                if (asd->high_speed_mode)
                        return 1;
                else
                        return 2;
        }

        if (asd->vfpp->val != ATOMISP_VFPP_ENABLE ||
            asd->copy_mode)
                return 1;

        if (asd->run_mode->val == ATOMISP_RUN_MODE_VIDEO ||
            (asd->run_mode->val == ATOMISP_RUN_MODE_STILL_CAPTURE &&
             !atomisp_is_mbuscode_raw(
                 asd->fmt[
                  asd->capture_pad].fmt.code) &&
             !asd->continuous_mode->val))
                return 2;
        else
                return 1;
}

int atomisp_stream_on_master_slave_sensor(struct atomisp_device *isp,
        bool isp_timeout)
{
        unsigned int master = -1, slave = -1, delay_slave = 0;
        int i, ret;

        /*
         * ISP only support 2 streams now so ignore multiple master/slave
         * case to reduce the delay between 2 stream_on calls.
         */
        for (i = 0; i < isp->num_of_streams; i++) {
                int sensor_index = isp->asd[i].input_curr;

                if (isp->inputs[sensor_index].camera_caps->
                    sensor[isp->asd[i].sensor_curr].is_slave)
                        slave = sensor_index;
                else
                        master = sensor_index;
        }

        if (master == -1 || slave == -1) {
                master = ATOMISP_DEPTH_DEFAULT_MASTER_SENSOR;
                slave = ATOMISP_DEPTH_DEFAULT_SLAVE_SENSOR;
                dev_warn(isp->dev,
                         "depth mode use default master=%s.slave=%s.\n",
                         isp->inputs[master].camera->name,
                         isp->inputs[slave].camera->name);
        }

        ret = v4l2_subdev_call(isp->inputs[master].camera, core,
                               ioctl, ATOMISP_IOC_G_DEPTH_SYNC_COMP,
                               &delay_slave);
        if (ret)
                dev_warn(isp->dev,
                         "get depth sensor %s compensation delay failed.\n",
                         isp->inputs[master].camera->name);

        ret = v4l2_subdev_call(isp->inputs[master].camera,
                               video, s_stream, 1);
        if (ret) {
                dev_err(isp->dev, "depth mode master sensor %s stream-on failed.\n",
                        isp->inputs[master].camera->name);
                return -EINVAL;
        }

        if (delay_slave != 0)
                udelay(delay_slave);

        ret = v4l2_subdev_call(isp->inputs[slave].camera,
                               video, s_stream, 1);
        if (ret) {
                dev_err(isp->dev, "depth mode slave sensor %s stream-on failed.\n",
                        isp->inputs[slave].camera->name);
                v4l2_subdev_call(isp->inputs[master].camera, video, s_stream, 0);

                return -EINVAL;
        }

        return 0;
}

/* FIXME! ISP2400 */
static void __wdt_on_master_slave_sensor(struct atomisp_device *isp,
                                         unsigned int wdt_duration)
{
        if (atomisp_buffers_queued(&isp->asd[0]))
                atomisp_wdt_refresh(&isp->asd[0], wdt_duration);
        if (atomisp_buffers_queued(&isp->asd[1]))
                atomisp_wdt_refresh(&isp->asd[1], wdt_duration);
}

/* FIXME! ISP2401 */
static void __wdt_on_master_slave_sensor_pipe(struct atomisp_video_pipe *pipe,
                                              unsigned int wdt_duration,
                                              bool enable)
{
        static struct atomisp_video_pipe *pipe0;

        if (enable) {
                if (atomisp_buffers_queued_pipe(pipe0))
                        atomisp_wdt_refresh_pipe(pipe0, wdt_duration);
                if (atomisp_buffers_queued_pipe(pipe))
                        atomisp_wdt_refresh_pipe(pipe, wdt_duration);
        } else {
                pipe0 = pipe;
        }
}

static void atomisp_pause_buffer_event(struct atomisp_device *isp)
{
        struct v4l2_event event = {0};
        int i;

        event.type = V4L2_EVENT_ATOMISP_PAUSE_BUFFER;

        for (i = 0; i < isp->num_of_streams; i++) {
                int sensor_index = isp->asd[i].input_curr;

                if (isp->inputs[sensor_index].camera_caps->
                    sensor[isp->asd[i].sensor_curr].is_slave) {
                        v4l2_event_queue(isp->asd[i].subdev.devnode, &event);
                        break;
                }
        }
}

/* Input system HW workaround */
/* Input system address translation corrupts burst during */
/* invalidate. SW workaround for this is to set burst length */
/* manually to 128 in case of 13MPx snapshot and to 1 otherwise. */
static void atomisp_dma_burst_len_cfg(struct atomisp_sub_device *asd)
{
        struct v4l2_mbus_framefmt *sink;

        sink = atomisp_subdev_get_ffmt(&asd->subdev, NULL,
                                       V4L2_SUBDEV_FORMAT_ACTIVE,
                                       ATOMISP_SUBDEV_PAD_SINK);

        if (sink->width * sink->height >= 4096 * 3072)
                atomisp_css2_hw_store_32(DMA_BURST_SIZE_REG, 0x7F);
        else
                atomisp_css2_hw_store_32(DMA_BURST_SIZE_REG, 0x00);
}

/*
 * This ioctl start the capture during streaming I/O.
 */
static int atomisp_streamon(struct file *file, void *fh,
                            enum v4l2_buf_type type)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
        struct atomisp_sub_device *asd = pipe->asd;
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct pci_dev *pdev = to_pci_dev(isp->dev);
        enum ia_css_pipe_id css_pipe_id;
        unsigned int sensor_start_stream;
        unsigned int wdt_duration = ATOMISP_ISP_TIMEOUT_DURATION;
        int ret = 0;
        unsigned long irqflags;

        dev_dbg(isp->dev, "Start stream on pad %d for asd%d\n",
                atomisp_subdev_source_pad(vdev), asd->index);

        if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
                dev_dbg(isp->dev, "unsupported v4l2 buf type\n");
                return -EINVAL;
        }

        rt_mutex_lock(&isp->mutex);
        if (isp->isp_fatal_error) {
                ret = -EIO;
                goto out;
        }

        if (asd->streaming == ATOMISP_DEVICE_STREAMING_STOPPING) {
                ret = -EBUSY;
                goto out;
        }

        if (pipe->capq.streaming)
                goto out;

        /* Input system HW workaround */
        atomisp_dma_burst_len_cfg(asd);

        /*
         * The number of streaming video nodes is based on which
         * binary is going to be run.
         */
        sensor_start_stream = atomisp_sensor_start_stream(asd);

        spin_lock_irqsave(&pipe->irq_lock, irqflags);
        if (list_empty(&pipe->capq.stream)) {
                spin_unlock_irqrestore(&pipe->irq_lock, irqflags);
                dev_dbg(isp->dev, "no buffer in the queue\n");
                ret = -EINVAL;
                goto out;
        }
        spin_unlock_irqrestore(&pipe->irq_lock, irqflags);

        ret = videobuf_streamon(&pipe->capq);
        if (ret)
                goto out;

        /* Reset pending capture request count. */
        asd->pending_capture_request = 0;
        if (IS_ISP2401)
                asd->re_trigger_capture = false;

        if ((atomisp_subdev_streaming_count(asd) > sensor_start_stream) &&
            (!isp->inputs[asd->input_curr].camera_caps->multi_stream_ctrl)) {
                /* trigger still capture */
                if (asd->continuous_mode->val &&
                    atomisp_subdev_source_pad(vdev)
                    == ATOMISP_SUBDEV_PAD_SOURCE_CAPTURE) {
                        if (asd->run_mode->val == ATOMISP_RUN_MODE_VIDEO)
                                dev_dbg(isp->dev, "SDV last video raw buffer id: %u\n",
                                        asd->latest_preview_exp_id);
                        else
                                dev_dbg(isp->dev, "ZSL last preview raw buffer id: %u\n",
                                        asd->latest_preview_exp_id);

                        if (asd->delayed_init == ATOMISP_DELAYED_INIT_QUEUED) {
                                flush_work(&asd->delayed_init_work);
                                rt_mutex_unlock(&isp->mutex);
                                if (wait_for_completion_interruptible(
                                        &asd->init_done) != 0)
                                        return -ERESTARTSYS;
                                rt_mutex_lock(&isp->mutex);
                        }

                        /* handle per_frame_setting parameter and buffers */
                        atomisp_handle_parameter_and_buffer(pipe);

                        /*
                         * only ZSL/SDV capture request will be here, raise
                         * the ISP freq to the highest possible to minimize
                         * the S2S latency.
                         */
                        atomisp_freq_scaling(isp, ATOMISP_DFS_MODE_MAX, false);
                        /*
                         * When asd->enable_raw_buffer_lock->val is true,
                         * An extra IOCTL is needed to call
                         * atomisp_css_exp_id_capture and trigger real capture
                         */
                        if (!asd->enable_raw_buffer_lock->val) {
                                ret = atomisp_css_offline_capture_configure(asd,
                                        asd->params.offline_parm.num_captures,
                                        asd->params.offline_parm.skip_frames,
                                        asd->params.offline_parm.offset);
                                if (ret) {
                                        ret = -EINVAL;
                                        goto out;
                                }
                                if (asd->depth_mode->val)
                                        atomisp_pause_buffer_event(isp);
                        }
                }
                atomisp_qbuffers_to_css(asd);
                goto out;
        }

        if (asd->streaming == ATOMISP_DEVICE_STREAMING_ENABLED) {
                atomisp_qbuffers_to_css(asd);
                goto start_sensor;
        }

        css_pipe_id = atomisp_get_css_pipe_id(asd);

        ret = atomisp_acc_load_extensions(asd);
        if (ret < 0) {
                dev_err(isp->dev, "acc extension failed to load\n");
                goto out;
        }

        if (asd->params.css_update_params_needed) {
                atomisp_apply_css_parameters(asd, &asd->params.css_param);
                if (asd->params.css_param.update_flag.dz_config)
                        asd->params.config.dz_config = &asd->params.css_param.dz_config;
                atomisp_css_update_isp_params(asd);
                asd->params.css_update_params_needed = false;
                memset(&asd->params.css_param.update_flag, 0,
                       sizeof(struct atomisp_parameters));
        }
        asd->params.dvs_6axis = NULL;

        ret = atomisp_css_start(asd, css_pipe_id, false);
        if (ret)
                goto out;

        asd->streaming = ATOMISP_DEVICE_STREAMING_ENABLED;
        atomic_set(&asd->sof_count, -1);
        atomic_set(&asd->sequence, -1);
        atomic_set(&asd->sequence_temp, -1);
        if (isp->sw_contex.file_input)
                wdt_duration = ATOMISP_ISP_FILE_TIMEOUT_DURATION;

        asd->params.dis_proj_data_valid = false;
        asd->latest_preview_exp_id = 0;
        asd->postview_exp_id = 1;
        asd->preview_exp_id = 1;

        /* handle per_frame_setting parameter and buffers */
        atomisp_handle_parameter_and_buffer(pipe);

        atomisp_qbuffers_to_css(asd);

        /* Only start sensor when the last streaming instance started */
        if (atomisp_subdev_streaming_count(asd) < sensor_start_stream)
                goto out;

start_sensor:
        if (isp->flash) {
                asd->params.num_flash_frames = 0;
                asd->params.flash_state = ATOMISP_FLASH_IDLE;
                atomisp_setup_flash(asd);
        }

        if (!isp->sw_contex.file_input) {
                atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
                                       atomisp_css_valid_sof(isp));
                atomisp_csi2_configure(asd);
                /*
                 * set freq to max when streaming count > 1 which indicate
                 * dual camera would run
                 */
                if (atomisp_streaming_count(isp) > 1) {
                        if (atomisp_freq_scaling(isp,
                                                 ATOMISP_DFS_MODE_MAX, false) < 0)
                                dev_dbg(isp->dev, "DFS max mode failed!\n");
                } else {
                        if (atomisp_freq_scaling(isp,
                                                 ATOMISP_DFS_MODE_AUTO, false) < 0)
                                dev_dbg(isp->dev, "DFS auto mode failed!\n");
                }
        } else {
                if (atomisp_freq_scaling(isp, ATOMISP_DFS_MODE_MAX, false) < 0)
                        dev_dbg(isp->dev, "DFS max mode failed!\n");
        }

        if (asd->depth_mode->val && atomisp_streaming_count(isp) ==
            ATOMISP_DEPTH_SENSOR_STREAMON_COUNT) {
                ret = atomisp_stream_on_master_slave_sensor(isp, false);
                if (ret) {
                        dev_err(isp->dev, "master slave sensor stream on failed!\n");
                        goto out;
                }
                if (!IS_ISP2401)
                        __wdt_on_master_slave_sensor(isp, wdt_duration);
                else
                        __wdt_on_master_slave_sensor_pipe(pipe, wdt_duration, true);
                goto start_delay_wq;
        } else if (asd->depth_mode->val && (atomisp_streaming_count(isp) <
                                            ATOMISP_DEPTH_SENSOR_STREAMON_COUNT)) {
                if (IS_ISP2401)
                        __wdt_on_master_slave_sensor_pipe(pipe, wdt_duration, false);
                goto start_delay_wq;
        }

        /* Enable the CSI interface on ANN B0/K0 */
        if (isp->media_dev.hw_revision >= ((ATOMISP_HW_REVISION_ISP2401 <<
                                            ATOMISP_HW_REVISION_SHIFT) | ATOMISP_HW_STEPPING_B0)) {
                pci_write_config_word(pdev, MRFLD_PCI_CSI_CONTROL,
                                      isp->saved_regs.csi_control | MRFLD_PCI_CSI_CONTROL_CSI_READY);
        }

        /* stream on the sensor */
        ret = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                               video, s_stream, 1);
        if (ret) {
                asd->streaming = ATOMISP_DEVICE_STREAMING_DISABLED;
                ret = -EINVAL;
                goto out;
        }

        if (!IS_ISP2401) {
                if (atomisp_buffers_queued(asd))
                        atomisp_wdt_refresh(asd, wdt_duration);
        } else {
                if (atomisp_buffers_queued_pipe(pipe))
                        atomisp_wdt_refresh_pipe(pipe, wdt_duration);
        }

start_delay_wq:
        if (asd->continuous_mode->val) {
                struct v4l2_mbus_framefmt *sink;

                sink = atomisp_subdev_get_ffmt(&asd->subdev, NULL,
                                               V4L2_SUBDEV_FORMAT_ACTIVE,
                                               ATOMISP_SUBDEV_PAD_SINK);

                reinit_completion(&asd->init_done);
                asd->delayed_init = ATOMISP_DELAYED_INIT_QUEUED;
                queue_work(asd->delayed_init_workq, &asd->delayed_init_work);
                atomisp_css_set_cont_prev_start_time(isp,
                                                     ATOMISP_CALC_CSS_PREV_OVERLAP(sink->height));
        } else {
                asd->delayed_init = ATOMISP_DELAYED_INIT_NOT_QUEUED;
        }
out:
        rt_mutex_unlock(&isp->mutex);
        return ret;
}

int __atomisp_streamoff(struct file *file, void *fh, enum v4l2_buf_type type)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct pci_dev *pdev = to_pci_dev(isp->dev);
        struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
        struct atomisp_sub_device *asd = pipe->asd;
        struct atomisp_video_pipe *capture_pipe = NULL;
        struct atomisp_video_pipe *vf_pipe = NULL;
        struct atomisp_video_pipe *preview_pipe = NULL;
        struct atomisp_video_pipe *video_pipe = NULL;
        struct videobuf_buffer *vb, *_vb;
        enum ia_css_pipe_id css_pipe_id;
        int ret;
        unsigned long flags;
        bool first_streamoff = false;

        dev_dbg(isp->dev, "Stop stream on pad %d for asd%d\n",
                atomisp_subdev_source_pad(vdev), asd->index);

        lockdep_assert_held(&isp->mutex);
        lockdep_assert_held(&isp->streamoff_mutex);

        if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
                dev_dbg(isp->dev, "unsupported v4l2 buf type\n");
                return -EINVAL;
        }

        /*
         * do only videobuf_streamoff for capture & vf pipes in
         * case of continuous capture
         */
        if ((asd->continuous_mode->val ||
             isp->inputs[asd->input_curr].camera_caps->multi_stream_ctrl) &&
            atomisp_subdev_source_pad(vdev) !=
            ATOMISP_SUBDEV_PAD_SOURCE_PREVIEW &&
            atomisp_subdev_source_pad(vdev) !=
            ATOMISP_SUBDEV_PAD_SOURCE_VIDEO) {
                if (isp->inputs[asd->input_curr].camera_caps->multi_stream_ctrl) {
                        v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                                         video, s_stream, 0);
                } else if (atomisp_subdev_source_pad(vdev)
                           == ATOMISP_SUBDEV_PAD_SOURCE_CAPTURE) {
                        /* stop continuous still capture if needed */
                        if (asd->params.offline_parm.num_captures == -1)
                                atomisp_css_offline_capture_configure(asd,
                                                                      0, 0, 0);
                        atomisp_freq_scaling(isp, ATOMISP_DFS_MODE_AUTO, false);
                }
                /*
                 * Currently there is no way to flush buffers queued to css.
                 * When doing videobuf_streamoff, active buffers will be
                 * marked as VIDEOBUF_NEEDS_INIT. HAL will be able to use
                 * these buffers again, and these buffers might be queued to
                 * css more than once! Warn here, if HAL has not dequeued all
                 * buffers back before calling streamoff.
                 */
                if (pipe->buffers_in_css != 0) {
                        WARN(1, "%s: buffers of vdev %s still in CSS!\n",
                             __func__, pipe->vdev.name);

                        /*
                         * Buffers remained in css maybe dequeued out in the
                         * next stream on, while this will causes serious
                         * issues as buffers already get invalid after
                         * previous stream off.
                         *
                         * No way to flush buffers but to reset the whole css
                         */
                        dev_warn(isp->dev, "Reset CSS to clean up css buffers.\n");
                        atomisp_css_flush(isp);
                }

                return videobuf_streamoff(&pipe->capq);
        }

        if (!pipe->capq.streaming)
                return 0;

        spin_lock_irqsave(&isp->lock, flags);
        if (asd->streaming == ATOMISP_DEVICE_STREAMING_ENABLED) {
                asd->streaming = ATOMISP_DEVICE_STREAMING_STOPPING;
                first_streamoff = true;
        }
        spin_unlock_irqrestore(&isp->lock, flags);

        if (first_streamoff) {
                /* if other streams are running, should not disable watch dog */
                rt_mutex_unlock(&isp->mutex);
                atomisp_wdt_stop(asd, true);

                /*
                 * must stop sending pixels into GP_FIFO before stop
                 * the pipeline.
                 */
                if (isp->sw_contex.file_input)
                        v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                                         video, s_stream, 0);

                rt_mutex_lock(&isp->mutex);
                atomisp_acc_unload_extensions(asd);
        }

        spin_lock_irqsave(&isp->lock, flags);
        if (atomisp_subdev_streaming_count(asd) == 1)
                asd->streaming = ATOMISP_DEVICE_STREAMING_DISABLED;
        spin_unlock_irqrestore(&isp->lock, flags);

        if (!first_streamoff) {
                ret = videobuf_streamoff(&pipe->capq);
                if (ret)
                        return ret;
                goto stopsensor;
        }

        atomisp_clear_css_buffer_counters(asd);

        if (!isp->sw_contex.file_input)
                atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
                                       false);

        if (asd->delayed_init == ATOMISP_DELAYED_INIT_QUEUED) {
                cancel_work_sync(&asd->delayed_init_work);
                asd->delayed_init = ATOMISP_DELAYED_INIT_NOT_QUEUED;
        }
        if (first_streamoff) {
                css_pipe_id = atomisp_get_css_pipe_id(asd);
                atomisp_css_stop(asd, css_pipe_id, false);
        }
        /* cancel work queue*/
        if (asd->video_out_capture.users) {
                capture_pipe = &asd->video_out_capture;
                wake_up_interruptible(&capture_pipe->capq.wait);
        }
        if (asd->video_out_vf.users) {
                vf_pipe = &asd->video_out_vf;
                wake_up_interruptible(&vf_pipe->capq.wait);
        }
        if (asd->video_out_preview.users) {
                preview_pipe = &asd->video_out_preview;
                wake_up_interruptible(&preview_pipe->capq.wait);
        }
        if (asd->video_out_video_capture.users) {
                video_pipe = &asd->video_out_video_capture;
                wake_up_interruptible(&video_pipe->capq.wait);
        }
        ret = videobuf_streamoff(&pipe->capq);
        if (ret)
                return ret;

        /* cleanup css here */
        /* no need for this, as ISP will be reset anyway */
        /*atomisp_flush_bufs_in_css(isp);*/

        spin_lock_irqsave(&pipe->irq_lock, flags);
        list_for_each_entry_safe(vb, _vb, &pipe->activeq, queue) {
                vb->state = VIDEOBUF_PREPARED;
                list_del(&vb->queue);
        }
        list_for_each_entry_safe(vb, _vb, &pipe->buffers_waiting_for_param, queue) {
                vb->state = VIDEOBUF_PREPARED;
                list_del(&vb->queue);
                pipe->frame_request_config_id[vb->i] = 0;
        }
        spin_unlock_irqrestore(&pipe->irq_lock, flags);

        atomisp_subdev_cleanup_pending_events(asd);
stopsensor:
        if (atomisp_subdev_streaming_count(asd) + 1
            != atomisp_sensor_start_stream(asd))
                return 0;

        if (!isp->sw_contex.file_input)
                ret = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                                       video, s_stream, 0);

        if (isp->flash) {
                asd->params.num_flash_frames = 0;
                asd->params.flash_state = ATOMISP_FLASH_IDLE;
        }

        /* if other streams are running, isp should not be powered off */
        if (atomisp_streaming_count(isp)) {
                atomisp_css_flush(isp);
                return 0;
        }

        /* Disable the CSI interface on ANN B0/K0 */
        if (isp->media_dev.hw_revision >= ((ATOMISP_HW_REVISION_ISP2401 <<
                                            ATOMISP_HW_REVISION_SHIFT) | ATOMISP_HW_STEPPING_B0)) {
                pci_write_config_word(pdev, MRFLD_PCI_CSI_CONTROL,
                                      isp->saved_regs.csi_control & ~MRFLD_PCI_CSI_CONTROL_CSI_READY);
        }

        if (atomisp_freq_scaling(isp, ATOMISP_DFS_MODE_LOW, false))
                dev_warn(isp->dev, "DFS failed.\n");
        /*
         * ISP work around, need to reset isp
         * Is it correct time to reset ISP when first node does streamoff?
         */
        if (isp->sw_contex.power_state == ATOM_ISP_POWER_UP) {
                unsigned int i;
                bool recreate_streams[MAX_STREAM_NUM] = {0};

                if (isp->isp_timeout)
                        dev_err(isp->dev, "%s: Resetting with WA activated",
                                __func__);
                /*
                 * It is possible that the other asd stream is in the stage
                 * that v4l2_setfmt is just get called on it, which will
                 * create css stream on that stream. But at this point, there
                 * is no way to destroy the css stream created on that stream.
                 *
                 * So force stream destroy here.
                 */
                for (i = 0; i < isp->num_of_streams; i++) {
                        if (isp->asd[i].stream_prepared) {
                                atomisp_destroy_pipes_stream_force(&isp->
                                                                   asd[i]);
                                recreate_streams[i] = true;
                        }
                }

                /* disable  PUNIT/ISP acknowlede/handshake - SRSE=3 */
                pci_write_config_dword(pdev, PCI_I_CONTROL,
                                       isp->saved_regs.i_control | MRFLD_PCI_I_CONTROL_SRSE_RESET_MASK);
                dev_err(isp->dev, "atomisp_reset");
                atomisp_reset(isp);
                for (i = 0; i < isp->num_of_streams; i++) {
                        if (recreate_streams[i])
                                atomisp_create_pipes_stream(&isp->asd[i]);
                }
                isp->isp_timeout = false;
        }
        return ret;
}

static int atomisp_streamoff(struct file *file, void *fh,
                             enum v4l2_buf_type type)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        int rval;

        mutex_lock(&isp->streamoff_mutex);
        rt_mutex_lock(&isp->mutex);
        rval = __atomisp_streamoff(file, fh, type);
        rt_mutex_unlock(&isp->mutex);
        mutex_unlock(&isp->streamoff_mutex);

        return rval;
}

/*
 * To get the current value of a control.
 * applications initialize the id field of a struct v4l2_control and
 * call this ioctl with a pointer to this structure
 */
static int atomisp_g_ctrl(struct file *file, void *fh,
                          struct v4l2_control *control)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd;
        struct atomisp_device *isp = video_get_drvdata(vdev);
        int i, ret = -EINVAL;

        for (i = 0; i < ctrls_num; i++) {
                if (ci_v4l2_controls[i].id == control->id) {
                        ret = 0;
                        break;
                }
        }

        if (ret)
                return ret;

        rt_mutex_lock(&isp->mutex);

        switch (control->id) {
        case V4L2_CID_IRIS_ABSOLUTE:
        case V4L2_CID_EXPOSURE_ABSOLUTE:
        case V4L2_CID_FNUMBER_ABSOLUTE:
        case V4L2_CID_2A_STATUS:
        case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
        case V4L2_CID_EXPOSURE:
        case V4L2_CID_EXPOSURE_AUTO:
        case V4L2_CID_SCENE_MODE:
        case V4L2_CID_ISO_SENSITIVITY:
        case V4L2_CID_ISO_SENSITIVITY_AUTO:
        case V4L2_CID_CONTRAST:
        case V4L2_CID_SATURATION:
        case V4L2_CID_SHARPNESS:
        case V4L2_CID_3A_LOCK:
        case V4L2_CID_EXPOSURE_ZONE_NUM:
        case V4L2_CID_TEST_PATTERN:
        case V4L2_CID_TEST_PATTERN_COLOR_R:
        case V4L2_CID_TEST_PATTERN_COLOR_GR:
        case V4L2_CID_TEST_PATTERN_COLOR_GB:
        case V4L2_CID_TEST_PATTERN_COLOR_B:
                rt_mutex_unlock(&isp->mutex);
                return v4l2_g_ctrl(isp->inputs[asd->input_curr].camera->
                                   ctrl_handler, control);
        case V4L2_CID_COLORFX:
                ret = atomisp_color_effect(asd, 0, &control->value);
                break;
        case V4L2_CID_ATOMISP_BAD_PIXEL_DETECTION:
                ret = atomisp_bad_pixel(asd, 0, &control->value);
                break;
        case V4L2_CID_ATOMISP_POSTPROCESS_GDC_CAC:
                ret = atomisp_gdc_cac(asd, 0, &control->value);
                break;
        case V4L2_CID_ATOMISP_VIDEO_STABLIZATION:
                ret = atomisp_video_stable(asd, 0, &control->value);
                break;
        case V4L2_CID_ATOMISP_FIXED_PATTERN_NR:
                ret = atomisp_fixed_pattern(asd, 0, &control->value);
                break;
        case V4L2_CID_ATOMISP_FALSE_COLOR_CORRECTION:
                ret = atomisp_false_color(asd, 0, &control->value);
                break;
        case V4L2_CID_ATOMISP_LOW_LIGHT:
                ret = atomisp_low_light(asd, 0, &control->value);
                break;
        default:
                ret = -EINVAL;
                break;
        }

        rt_mutex_unlock(&isp->mutex);
        return ret;
}

/*
 * To change the value of a control.
 * applications initialize the id and value fields of a struct v4l2_control
 * and call this ioctl.
 */
static int atomisp_s_ctrl(struct file *file, void *fh,
                          struct v4l2_control *control)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd;
        struct atomisp_device *isp = video_get_drvdata(vdev);
        int i, ret = -EINVAL;

        for (i = 0; i < ctrls_num; i++) {
                if (ci_v4l2_controls[i].id == control->id) {
                        ret = 0;
                        break;
                }
        }

        if (ret)
                return ret;

        rt_mutex_lock(&isp->mutex);
        switch (control->id) {
        case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
        case V4L2_CID_EXPOSURE:
        case V4L2_CID_EXPOSURE_AUTO:
        case V4L2_CID_EXPOSURE_AUTO_PRIORITY:
        case V4L2_CID_SCENE_MODE:
        case V4L2_CID_ISO_SENSITIVITY:
        case V4L2_CID_ISO_SENSITIVITY_AUTO:
        case V4L2_CID_POWER_LINE_FREQUENCY:
        case V4L2_CID_EXPOSURE_METERING:
        case V4L2_CID_CONTRAST:
        case V4L2_CID_SATURATION:
        case V4L2_CID_SHARPNESS:
        case V4L2_CID_3A_LOCK:
        case V4L2_CID_COLORFX_CBCR:
        case V4L2_CID_TEST_PATTERN:
        case V4L2_CID_TEST_PATTERN_COLOR_R:
        case V4L2_CID_TEST_PATTERN_COLOR_GR:
        case V4L2_CID_TEST_PATTERN_COLOR_GB:
        case V4L2_CID_TEST_PATTERN_COLOR_B:
                rt_mutex_unlock(&isp->mutex);
                return v4l2_s_ctrl(NULL,
                                   isp->inputs[asd->input_curr].camera->
                                   ctrl_handler, control);
        case V4L2_CID_COLORFX:
                ret = atomisp_color_effect(asd, 1, &control->value);
                break;
        case V4L2_CID_ATOMISP_BAD_PIXEL_DETECTION:
                ret = atomisp_bad_pixel(asd, 1, &control->value);
                break;
        case V4L2_CID_ATOMISP_POSTPROCESS_GDC_CAC:
                ret = atomisp_gdc_cac(asd, 1, &control->value);
                break;
        case V4L2_CID_ATOMISP_VIDEO_STABLIZATION:
                ret = atomisp_video_stable(asd, 1, &control->value);
                break;
        case V4L2_CID_ATOMISP_FIXED_PATTERN_NR:
                ret = atomisp_fixed_pattern(asd, 1, &control->value);
                break;
        case V4L2_CID_ATOMISP_FALSE_COLOR_CORRECTION:
                ret = atomisp_false_color(asd, 1, &control->value);
                break;
        case V4L2_CID_REQUEST_FLASH:
                ret = atomisp_flash_enable(asd, control->value);
                break;
        case V4L2_CID_ATOMISP_LOW_LIGHT:
                ret = atomisp_low_light(asd, 1, &control->value);
                break;
        default:
                ret = -EINVAL;
                break;
        }
        rt_mutex_unlock(&isp->mutex);
        return ret;
}

/*
 * To query the attributes of a control.
 * applications set the id field of a struct v4l2_queryctrl and call the
 * this ioctl with a pointer to this structure. The driver fills
 * the rest of the structure.
 */
static int atomisp_queryctl(struct file *file, void *fh,
                            struct v4l2_queryctrl *qc)
{
        int i, ret = -EINVAL;
        struct video_device *vdev = video_devdata(file);
        struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd;
        struct atomisp_device *isp = video_get_drvdata(vdev);

        switch (qc->id) {
        case V4L2_CID_FOCUS_ABSOLUTE:
        case V4L2_CID_FOCUS_RELATIVE:
        case V4L2_CID_FOCUS_STATUS:
                if (!IS_ISP2401) {
                        return v4l2_queryctrl(isp->inputs[asd->input_curr].camera->
                                            ctrl_handler, qc);
                }
                /* ISP2401 */
                if (isp->motor)
                        return v4l2_queryctrl(isp->motor->ctrl_handler, qc);
                else
                        return v4l2_queryctrl(isp->inputs[asd->input_curr].
                                              camera->ctrl_handler, qc);
        }

        if (qc->id & V4L2_CTRL_FLAG_NEXT_CTRL)
                return ret;

        for (i = 0; i < ctrls_num; i++) {
                if (ci_v4l2_controls[i].id == qc->id) {
                        memcpy(qc, &ci_v4l2_controls[i],
                               sizeof(struct v4l2_queryctrl));
                        qc->reserved[0] = 0;
                        ret = 0;
                        break;
                }
        }
        if (ret != 0)
                qc->flags = V4L2_CTRL_FLAG_DISABLED;

        return ret;
}

static int atomisp_camera_g_ext_ctrls(struct file *file, void *fh,
                                      struct v4l2_ext_controls *c)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd;
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct v4l2_subdev *motor;
        struct v4l2_control ctrl;
        int i;
        int ret = 0;

        if (!IS_ISP2401)
                motor = isp->inputs[asd->input_curr].motor;
        else
                motor = isp->motor;

        for (i = 0; i < c->count; i++) {
                ctrl.id = c->controls[i].id;
                ctrl.value = c->controls[i].value;
                switch (ctrl.id) {
                case V4L2_CID_EXPOSURE_ABSOLUTE:
                case V4L2_CID_EXPOSURE_AUTO:
                case V4L2_CID_IRIS_ABSOLUTE:
                case V4L2_CID_FNUMBER_ABSOLUTE:
                case V4L2_CID_BIN_FACTOR_HORZ:
                case V4L2_CID_BIN_FACTOR_VERT:
                case V4L2_CID_3A_LOCK:
                case V4L2_CID_TEST_PATTERN:
                case V4L2_CID_TEST_PATTERN_COLOR_R:
                case V4L2_CID_TEST_PATTERN_COLOR_GR:
                case V4L2_CID_TEST_PATTERN_COLOR_GB:
                case V4L2_CID_TEST_PATTERN_COLOR_B:
                        /*
                         * Exposure related control will be handled by sensor
                         * driver
                         */
                        ret =
                            v4l2_g_ctrl(isp->inputs[asd->input_curr].camera->
                                        ctrl_handler, &ctrl);
                        break;
                case V4L2_CID_FOCUS_ABSOLUTE:
                case V4L2_CID_FOCUS_RELATIVE:
                case V4L2_CID_FOCUS_STATUS:
                case V4L2_CID_FOCUS_AUTO:
                        if (motor)
                                ret = v4l2_g_ctrl(motor->ctrl_handler, &ctrl);
                        break;
                case V4L2_CID_FLASH_STATUS:
                case V4L2_CID_FLASH_INTENSITY:
                case V4L2_CID_FLASH_TORCH_INTENSITY:
                case V4L2_CID_FLASH_INDICATOR_INTENSITY:
                case V4L2_CID_FLASH_TIMEOUT:
                case V4L2_CID_FLASH_STROBE:
                case V4L2_CID_FLASH_MODE:
                case V4L2_CID_FLASH_STATUS_REGISTER:
                        if (isp->flash)
                                ret =
                                    v4l2_g_ctrl(isp->flash->ctrl_handler,
                                                &ctrl);
                        break;
                case V4L2_CID_ZOOM_ABSOLUTE:
                        rt_mutex_lock(&isp->mutex);
                        ret = atomisp_digital_zoom(asd, 0, &ctrl.value);
                        rt_mutex_unlock(&isp->mutex);
                        break;
                case V4L2_CID_G_SKIP_FRAMES:
                        ret = v4l2_subdev_call(
                                  isp->inputs[asd->input_curr].camera,
                                  sensor, g_skip_frames, (u32 *)&ctrl.value);
                        break;
                default:
                        ret = -EINVAL;
                }

                if (ret) {
                        c->error_idx = i;
                        break;
                }
                c->controls[i].value = ctrl.value;
        }
        return ret;
}

/* This ioctl allows the application to get multiple controls by class */
static int atomisp_g_ext_ctrls(struct file *file, void *fh,
                               struct v4l2_ext_controls *c)
{
        struct v4l2_control ctrl;
        int i, ret = 0;

        /*
         * input_lock is not need for the Camera related IOCTLs
         * The input_lock downgrade the FPS of 3A
         */
        ret = atomisp_camera_g_ext_ctrls(file, fh, c);
        if (ret != -EINVAL)
                return ret;

        for (i = 0; i < c->count; i++) {
                ctrl.id = c->controls[i].id;
                ctrl.value = c->controls[i].value;
                ret = atomisp_g_ctrl(file, fh, &ctrl);
                c->controls[i].value = ctrl.value;
                if (ret) {
                        c->error_idx = i;
                        break;
                }
        }
        return ret;
}

static int atomisp_camera_s_ext_ctrls(struct file *file, void *fh,
                                      struct v4l2_ext_controls *c)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd;
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct v4l2_subdev *motor;
        struct v4l2_control ctrl;
        int i;
        int ret = 0;

        if (!IS_ISP2401)
                motor = isp->inputs[asd->input_curr].motor;
        else
                motor = isp->motor;

        for (i = 0; i < c->count; i++) {
                struct v4l2_ctrl *ctr;

                ctrl.id = c->controls[i].id;
                ctrl.value = c->controls[i].value;
                switch (ctrl.id) {
                case V4L2_CID_EXPOSURE_ABSOLUTE:
                case V4L2_CID_EXPOSURE_AUTO:
                case V4L2_CID_EXPOSURE_METERING:
                case V4L2_CID_IRIS_ABSOLUTE:
                case V4L2_CID_FNUMBER_ABSOLUTE:
                case V4L2_CID_VCM_TIMING:
                case V4L2_CID_VCM_SLEW:
                case V4L2_CID_3A_LOCK:
                case V4L2_CID_TEST_PATTERN:
                case V4L2_CID_TEST_PATTERN_COLOR_R:
                case V4L2_CID_TEST_PATTERN_COLOR_GR:
                case V4L2_CID_TEST_PATTERN_COLOR_GB:
                case V4L2_CID_TEST_PATTERN_COLOR_B:
                        ret = v4l2_s_ctrl(NULL,
                                          isp->inputs[asd->input_curr].camera->
                                          ctrl_handler, &ctrl);
                        break;
                case V4L2_CID_FOCUS_ABSOLUTE:
                case V4L2_CID_FOCUS_RELATIVE:
                case V4L2_CID_FOCUS_STATUS:
                case V4L2_CID_FOCUS_AUTO:
                        if (motor)
                                ret = v4l2_s_ctrl(NULL, motor->ctrl_handler,
                                                  &ctrl);
                        else
                                ret = v4l2_s_ctrl(NULL,
                                                  isp->inputs[asd->input_curr].
                                                  camera->ctrl_handler, &ctrl);
                        break;
                case V4L2_CID_FLASH_STATUS:
                case V4L2_CID_FLASH_INTENSITY:
                case V4L2_CID_FLASH_TORCH_INTENSITY:
                case V4L2_CID_FLASH_INDICATOR_INTENSITY:
                case V4L2_CID_FLASH_TIMEOUT:
                case V4L2_CID_FLASH_STROBE:
                case V4L2_CID_FLASH_MODE:
                case V4L2_CID_FLASH_STATUS_REGISTER:
                        rt_mutex_lock(&isp->mutex);
                        if (isp->flash) {
                                ret =
                                    v4l2_s_ctrl(NULL, isp->flash->ctrl_handler,
                                                &ctrl);
                                /*
                                 * When flash mode is changed we need to reset
                                 * flash state
                                 */
                                if (ctrl.id == V4L2_CID_FLASH_MODE) {
                                        asd->params.flash_state =
                                            ATOMISP_FLASH_IDLE;
                                        asd->params.num_flash_frames = 0;
                                }
                        }
                        rt_mutex_unlock(&isp->mutex);
                        break;
                case V4L2_CID_ZOOM_ABSOLUTE:
                        rt_mutex_lock(&isp->mutex);
                        ret = atomisp_digital_zoom(asd, 1, &ctrl.value);
                        rt_mutex_unlock(&isp->mutex);
                        break;
                default:
                        ctr = v4l2_ctrl_find(&asd->ctrl_handler, ctrl.id);
                        if (ctr)
                                ret = v4l2_ctrl_s_ctrl(ctr, ctrl.value);
                        else
                                ret = -EINVAL;
                }

                if (ret) {
                        c->error_idx = i;
                        break;
                }
                c->controls[i].value = ctrl.value;
        }
        return ret;
}

/* This ioctl allows the application to set multiple controls by class */
static int atomisp_s_ext_ctrls(struct file *file, void *fh,
                               struct v4l2_ext_controls *c)
{
        struct v4l2_control ctrl;
        int i, ret = 0;

        /*
         * input_lock is not need for the Camera related IOCTLs
         * The input_lock downgrade the FPS of 3A
         */
        ret = atomisp_camera_s_ext_ctrls(file, fh, c);
        if (ret != -EINVAL)
                return ret;

        for (i = 0; i < c->count; i++) {
                ctrl.id = c->controls[i].id;
                ctrl.value = c->controls[i].value;
                ret = atomisp_s_ctrl(file, fh, &ctrl);
                c->controls[i].value = ctrl.value;
                if (ret) {
                        c->error_idx = i;
                        break;
                }
        }
        return ret;
}

/*
 * vidioc_g/s_param are used to switch isp running mode
 */
static int atomisp_g_parm(struct file *file, void *fh,
                          struct v4l2_streamparm *parm)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd;
        struct atomisp_device *isp = video_get_drvdata(vdev);

        if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
                dev_err(isp->dev, "unsupported v4l2 buf type\n");
                return -EINVAL;
        }

        rt_mutex_lock(&isp->mutex);
        parm->parm.capture.capturemode = asd->run_mode->val;
        rt_mutex_unlock(&isp->mutex);

        return 0;
}

static int atomisp_s_parm(struct file *file, void *fh,
                          struct v4l2_streamparm *parm)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd;
        int mode;
        int rval;
        int fps;

        if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
                dev_err(isp->dev, "unsupported v4l2 buf type\n");
                return -EINVAL;
        }

        rt_mutex_lock(&isp->mutex);

        asd->high_speed_mode = false;
        switch (parm->parm.capture.capturemode) {
        case CI_MODE_NONE: {
                struct v4l2_subdev_frame_interval fi = {0};

                fi.interval = parm->parm.capture.timeperframe;

                rval = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                                        video, s_frame_interval, &fi);
                if (!rval)
                        parm->parm.capture.timeperframe = fi.interval;

                if (fi.interval.numerator != 0) {
                        fps = fi.interval.denominator / fi.interval.numerator;
                        if (fps > 30)
                                asd->high_speed_mode = true;
                }

                goto out;
        }
        case CI_MODE_VIDEO:
                mode = ATOMISP_RUN_MODE_VIDEO;
                break;
        case CI_MODE_STILL_CAPTURE:
                mode = ATOMISP_RUN_MODE_STILL_CAPTURE;
                break;
        case CI_MODE_CONTINUOUS:
                mode = ATOMISP_RUN_MODE_CONTINUOUS_CAPTURE;
                break;
        case CI_MODE_PREVIEW:
                mode = ATOMISP_RUN_MODE_PREVIEW;
                break;
        default:
                rval = -EINVAL;
                goto out;
        }

        rval = v4l2_ctrl_s_ctrl(asd->run_mode, mode);

out:
        rt_mutex_unlock(&isp->mutex);

        return rval == -ENOIOCTLCMD ? 0 : rval;
}

static int atomisp_s_parm_file(struct file *file, void *fh,
                               struct v4l2_streamparm *parm)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);

        if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
                dev_err(isp->dev, "unsupported v4l2 buf type for output\n");
                return -EINVAL;
        }

        rt_mutex_lock(&isp->mutex);
        isp->sw_contex.file_input = true;
        rt_mutex_unlock(&isp->mutex);

        return 0;
}

static long atomisp_vidioc_default(struct file *file, void *fh,
                                   bool valid_prio, unsigned int cmd, void *arg)
{
        struct video_device *vdev = video_devdata(file);
        struct atomisp_device *isp = video_get_drvdata(vdev);
        struct atomisp_sub_device *asd;
        struct v4l2_subdev *motor;
        bool acc_node;
        int err;

        acc_node = !strcmp(vdev->name, "ATOMISP ISP ACC");
        if (acc_node)
                asd = atomisp_to_acc_pipe(vdev)->asd;
        else
                asd = atomisp_to_video_pipe(vdev)->asd;

        if (!IS_ISP2401)
                motor = isp->inputs[asd->input_curr].motor;
        else
                motor = isp->motor;

        switch (cmd) {
        case ATOMISP_IOC_G_MOTOR_PRIV_INT_DATA:
        case ATOMISP_IOC_S_EXPOSURE:
        case ATOMISP_IOC_G_SENSOR_CALIBRATION_GROUP:
        case ATOMISP_IOC_G_SENSOR_PRIV_INT_DATA:
        case ATOMISP_IOC_EXT_ISP_CTRL:
        case ATOMISP_IOC_G_SENSOR_AE_BRACKETING_INFO:
        case ATOMISP_IOC_S_SENSOR_AE_BRACKETING_MODE:
        case ATOMISP_IOC_G_SENSOR_AE_BRACKETING_MODE:
        case ATOMISP_IOC_S_SENSOR_AE_BRACKETING_LUT:
        case ATOMISP_IOC_S_SENSOR_EE_CONFIG:
        case ATOMISP_IOC_G_UPDATE_EXPOSURE:
                /* we do not need take isp->mutex for these IOCTLs */
                break;
        default:
                rt_mutex_lock(&isp->mutex);
                break;
        }
        switch (cmd) {
        case ATOMISP_IOC_S_SENSOR_RUNMODE:
                if (IS_ISP2401)
                        err = atomisp_set_sensor_runmode(asd, arg);
                else
                        err = -EINVAL;
                break;

        case ATOMISP_IOC_G_XNR:
                err = atomisp_xnr(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_XNR:
                err = atomisp_xnr(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_NR:
                err = atomisp_nr(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_NR:
                err = atomisp_nr(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_TNR:
                err = atomisp_tnr(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_TNR:
                err = atomisp_tnr(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_BLACK_LEVEL_COMP:
                err = atomisp_black_level(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_BLACK_LEVEL_COMP:
                err = atomisp_black_level(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_EE:
                err = atomisp_ee(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_EE:
                err = atomisp_ee(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_DIS_STAT:
                err = atomisp_get_dis_stat(asd, arg);
                break;

        case ATOMISP_IOC_G_DVS2_BQ_RESOLUTIONS:
                err = atomisp_get_dvs2_bq_resolutions(asd, arg);
                break;

        case ATOMISP_IOC_S_DIS_COEFS:
                err = atomisp_css_cp_dvs2_coefs(asd, arg,
                                                &asd->params.css_param, true);
                if (!err && arg)
                        asd->params.css_update_params_needed = true;
                break;

        case ATOMISP_IOC_S_DIS_VECTOR:
                err = atomisp_cp_dvs_6axis_config(asd, arg,
                                                  &asd->params.css_param, true);
                if (!err && arg)
                        asd->params.css_update_params_needed = true;
                break;

        case ATOMISP_IOC_G_ISP_PARM:
                err = atomisp_param(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_ISP_PARM:
                err = atomisp_param(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_3A_STAT:
                err = atomisp_3a_stat(asd, 0, arg);
                break;

        case ATOMISP_IOC_G_ISP_GAMMA:
                err = atomisp_gamma(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_ISP_GAMMA:
                err = atomisp_gamma(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_ISP_GDC_TAB:
                err = atomisp_gdc_cac_table(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_ISP_GDC_TAB:
                err = atomisp_gdc_cac_table(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_ISP_MACC:
                err = atomisp_macc_table(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_ISP_MACC:
                err = atomisp_macc_table(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_ISP_BAD_PIXEL_DETECTION:
                err = atomisp_bad_pixel_param(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_ISP_BAD_PIXEL_DETECTION:
                err = atomisp_bad_pixel_param(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_ISP_FALSE_COLOR_CORRECTION:
                err = atomisp_false_color_param(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_ISP_FALSE_COLOR_CORRECTION:
                err = atomisp_false_color_param(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_ISP_CTC:
                err = atomisp_ctc(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_ISP_CTC:
                err = atomisp_ctc(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_ISP_WHITE_BALANCE:
                err = atomisp_white_balance_param(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_ISP_WHITE_BALANCE:
                err = atomisp_white_balance_param(asd, 1, arg);
                break;

        case ATOMISP_IOC_G_3A_CONFIG:
                err = atomisp_3a_config_param(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_3A_CONFIG:
                err = atomisp_3a_config_param(asd, 1, arg);
                break;

        case ATOMISP_IOC_S_ISP_FPN_TABLE:
                err = atomisp_fixed_pattern_table(asd, arg);
                break;

        case ATOMISP_IOC_ISP_MAKERNOTE:
                err = atomisp_exif_makernote(asd, arg);
                break;

        case ATOMISP_IOC_G_SENSOR_MODE_DATA:
                err = atomisp_get_sensor_mode_data(asd, arg);
                break;

        case ATOMISP_IOC_G_MOTOR_PRIV_INT_DATA:
                if (motor)
                        err = v4l2_subdev_call(motor, core, ioctl, cmd, arg);
                else
                        err = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                                               core, ioctl, cmd, arg);
                break;

        case ATOMISP_IOC_S_EXPOSURE:
        case ATOMISP_IOC_G_SENSOR_CALIBRATION_GROUP:
        case ATOMISP_IOC_G_SENSOR_PRIV_INT_DATA:
        case ATOMISP_IOC_G_SENSOR_AE_BRACKETING_INFO:
        case ATOMISP_IOC_S_SENSOR_AE_BRACKETING_MODE:
        case ATOMISP_IOC_G_SENSOR_AE_BRACKETING_MODE:
        case ATOMISP_IOC_S_SENSOR_AE_BRACKETING_LUT:
                err = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                                       core, ioctl, cmd, arg);
                break;
        case ATOMISP_IOC_G_UPDATE_EXPOSURE:
                if (IS_ISP2401)
                        err = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                                               core, ioctl, cmd, arg);
                else
                        err = -EINVAL;
                break;

        case ATOMISP_IOC_ACC_LOAD:
                err = atomisp_acc_load(asd, arg);
                break;

        case ATOMISP_IOC_ACC_LOAD_TO_PIPE:
                err = atomisp_acc_load_to_pipe(asd, arg);
                break;

        case ATOMISP_IOC_ACC_UNLOAD:
                err = atomisp_acc_unload(asd, arg);
                break;

        case ATOMISP_IOC_ACC_START:
                err = atomisp_acc_start(asd, arg);
                break;

        case ATOMISP_IOC_ACC_WAIT:
                err = atomisp_acc_wait(asd, arg);
                break;

        case ATOMISP_IOC_ACC_MAP:
                err = atomisp_acc_map(asd, arg);
                break;

        case ATOMISP_IOC_ACC_UNMAP:
                err = atomisp_acc_unmap(asd, arg);
                break;

        case ATOMISP_IOC_ACC_S_MAPPED_ARG:
                err = atomisp_acc_s_mapped_arg(asd, arg);
                break;

        case ATOMISP_IOC_S_ISP_SHD_TAB:
                err = atomisp_set_shading_table(asd, arg);
                break;

        case ATOMISP_IOC_G_ISP_GAMMA_CORRECTION:
                err = atomisp_gamma_correction(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_ISP_GAMMA_CORRECTION:
                err = atomisp_gamma_correction(asd, 1, arg);
                break;

        case ATOMISP_IOC_S_PARAMETERS:
                err = atomisp_set_parameters(vdev, arg);
                break;

        case ATOMISP_IOC_S_CONT_CAPTURE_CONFIG:
                err = atomisp_offline_capture_configure(asd, arg);
                break;
        case ATOMISP_IOC_G_METADATA:
                err = atomisp_get_metadata(asd, 0, arg);
                break;
        case ATOMISP_IOC_G_METADATA_BY_TYPE:
                err = atomisp_get_metadata_by_type(asd, 0, arg);
                break;
        case ATOMISP_IOC_EXT_ISP_CTRL:
                err = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
                                       core, ioctl, cmd, arg);
                break;
        case ATOMISP_IOC_EXP_ID_UNLOCK:
                err = atomisp_exp_id_unlock(asd, arg);
                break;
        case ATOMISP_IOC_EXP_ID_CAPTURE:
                err = atomisp_exp_id_capture(asd, arg);
                break;
        case ATOMISP_IOC_S_ENABLE_DZ_CAPT_PIPE:
                err = atomisp_enable_dz_capt_pipe(asd, arg);
                break;
        case ATOMISP_IOC_G_FORMATS_CONFIG:
                err = atomisp_formats(asd, 0, arg);
                break;

        case ATOMISP_IOC_S_FORMATS_CONFIG:
                err = atomisp_formats(asd, 1, arg);
                break;
        case ATOMISP_IOC_S_EXPOSURE_WINDOW:
                err = atomisp_s_ae_window(asd, arg);
                break;
        case ATOMISP_IOC_S_ACC_STATE:
                err = atomisp_acc_set_state(asd, arg);
                break;
        case ATOMISP_IOC_G_ACC_STATE:
                err = atomisp_acc_get_state(asd, arg);
                break;
        case ATOMISP_IOC_INJECT_A_FAKE_EVENT:
                err = atomisp_inject_a_fake_event(asd, arg);
                break;
        case ATOMISP_IOC_G_INVALID_FRAME_NUM:
                err = atomisp_get_invalid_frame_num(vdev, arg);
                break;