diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
index b01cacb8d2a8..431defa30acf 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
@@ -1938,7 +1938,6 @@ static void atomisp_update_grid_info(struct atomisp_sub_device *asd,
 {
 	struct atomisp_device *isp = asd->isp;
 	int err;
-	u16 stream_id = atomisp_source_pad_to_stream_id(asd, source_pad);
 
 	if (atomisp_css_get_grid_info(asd, pipe_id, source_pad))
 		return;
@@ -1947,7 +1946,7 @@ static void atomisp_update_grid_info(struct atomisp_sub_device *asd,
 	   the grid size. */
 	atomisp_css_free_stat_buffers(asd);
 
-	err = atomisp_alloc_css_stat_bufs(asd, stream_id);
+	err = atomisp_alloc_css_stat_bufs(asd, ATOMISP_INPUT_STREAM_GENERAL);
 	if (err) {
 		dev_err(isp->dev, "stat_buf allocate error\n");
 		goto err;
@@ -4431,8 +4430,6 @@ int atomisp_try_fmt(struct video_device *vdev, struct v4l2_pix_format *f,
 	const struct atomisp_format_bridge *fmt;
 	struct atomisp_input_stream_info *stream_info =
 	    (struct atomisp_input_stream_info *)snr_mbus_fmt->reserved;
-	u16 stream_index;
-	int source_pad = atomisp_subdev_source_pad(vdev);
 	int ret;
 
 	if (!asd) {
@@ -4444,7 +4441,6 @@ int atomisp_try_fmt(struct video_device *vdev, struct v4l2_pix_format *f,
 	if (!isp->inputs[asd->input_curr].camera)
 		return -EINVAL;
 
-	stream_index = atomisp_source_pad_to_stream_id(asd, source_pad);
 	fmt = atomisp_get_format_bridge(f->pixelformat);
 	if (!fmt) {
 		dev_err(isp->dev, "unsupported pixelformat!\n");
@@ -4458,7 +4454,7 @@ int atomisp_try_fmt(struct video_device *vdev, struct v4l2_pix_format *f,
 	snr_mbus_fmt->width = f->width;
 	snr_mbus_fmt->height = f->height;
 
-	__atomisp_init_stream_info(stream_index, stream_info);
+	__atomisp_init_stream_info(ATOMISP_INPUT_STREAM_GENERAL, stream_info);
 
 	dev_dbg(isp->dev, "try_mbus_fmt: asking for %ux%u\n",
 		snr_mbus_fmt->width, snr_mbus_fmt->height);
@@ -4743,7 +4739,6 @@ static int atomisp_set_fmt_to_isp(struct video_device *vdev,
 	int (*configure_pp_input)(struct atomisp_sub_device *asd,
 				  unsigned int width, unsigned int height) =
 				      configure_pp_input_nop;
-	u16 stream_index;
 	const struct atomisp_in_fmt_conv *fc;
 	int ret, i;
 
@@ -4752,7 +4747,6 @@ static int atomisp_set_fmt_to_isp(struct video_device *vdev,
 			__func__, vdev->name);
 		return -EINVAL;
 	}
-	stream_index = atomisp_source_pad_to_stream_id(asd, source_pad);
 
 	v4l2_fh_init(&fh.vfh, vdev);
 
@@ -4772,7 +4766,7 @@ static int atomisp_set_fmt_to_isp(struct video_device *vdev,
 			dev_err(isp->dev, "mipi_info is NULL\n");
 			return -EINVAL;
 		}
-		if (atomisp_set_sensor_mipi_to_isp(asd, stream_index,
+		if (atomisp_set_sensor_mipi_to_isp(asd, ATOMISP_INPUT_STREAM_GENERAL,
 						   mipi_info))
 			return -EINVAL;
 		fc = atomisp_find_in_fmt_conv_by_atomisp_in_fmt(
@@ -4856,7 +4850,7 @@ static int atomisp_set_fmt_to_isp(struct video_device *vdev,
 	/* ISP2401 new input system need to use copy pipe */
 	if (asd->copy_mode) {
 		pipe_id = IA_CSS_PIPE_ID_COPY;
-		atomisp_css_capture_enable_online(asd, stream_index, false);
+		atomisp_css_capture_enable_online(asd, ATOMISP_INPUT_STREAM_GENERAL, false);
 	} else if (asd->vfpp->val == ATOMISP_VFPP_DISABLE_SCALER) {
 		/* video same in continuouscapture and online modes */
 		configure_output = atomisp_css_video_configure_output;
@@ -4888,7 +4882,8 @@ static int atomisp_set_fmt_to_isp(struct video_device *vdev,
 				pipe_id = IA_CSS_PIPE_ID_CAPTURE;
 
 				atomisp_update_capture_mode(asd);
-				atomisp_css_capture_enable_online(asd, stream_index, false);
+				atomisp_css_capture_enable_online(
+					asd, ATOMISP_INPUT_STREAM_GENERAL, false);
 			}
 		}
 	} else if (source_pad == ATOMISP_SUBDEV_PAD_SOURCE_PREVIEW) {
@@ -4913,7 +4908,7 @@ static int atomisp_set_fmt_to_isp(struct video_device *vdev,
 
 		if (!asd->continuous_mode->val)
 			/* in case of ANR, force capture pipe to offline mode */
-			atomisp_css_capture_enable_online(asd, stream_index,
+			atomisp_css_capture_enable_online(asd, ATOMISP_INPUT_STREAM_GENERAL,
 							  asd->params.low_light ?
 							  false : asd->params.online_process);
 
@@ -4944,7 +4939,7 @@ static int atomisp_set_fmt_to_isp(struct video_device *vdev,
 		pipe_id = IA_CSS_PIPE_ID_YUVPP;
 
 	if (asd->copy_mode)
-		ret = atomisp_css_copy_configure_output(asd, stream_index,
+		ret = atomisp_css_copy_configure_output(asd, ATOMISP_INPUT_STREAM_GENERAL,
 							pix->width, pix->height,
 							format->planar ? pix->bytesperline :
 							pix->bytesperline * 8 / format->depth,
@@ -4968,8 +4963,8 @@ static int atomisp_set_fmt_to_isp(struct video_device *vdev,
 		return -EINVAL;
 	}
 	if (asd->copy_mode)
-		ret = atomisp_css_copy_get_output_frame_info(asd, stream_index,
-			output_info);
+		ret = atomisp_css_copy_get_output_frame_info(
+			asd, ATOMISP_INPUT_STREAM_GENERAL, output_info);
 	else
 		ret = get_frame_info(asd, output_info);
 	if (ret) {
@@ -5061,7 +5056,6 @@ static int atomisp_set_fmt_to_snr(struct video_device *vdev,
 	struct atomisp_device *isp;
 	struct atomisp_input_stream_info *stream_info =
 	    (struct atomisp_input_stream_info *)ffmt->reserved;
-	u16 stream_index = ATOMISP_INPUT_STREAM_GENERAL;
 	int source_pad = atomisp_subdev_source_pad(vdev);
 	struct v4l2_subdev_fh fh;
 	int ret;
@@ -5076,8 +5070,6 @@ static int atomisp_set_fmt_to_snr(struct video_device *vdev,
 
 	v4l2_fh_init(&fh.vfh, vdev);
 
-	stream_index = atomisp_source_pad_to_stream_id(asd, source_pad);
-
 	format = atomisp_get_format_bridge(pixelformat);
 	if (!format)
 		return -EINVAL;
@@ -5090,7 +5082,7 @@ static int atomisp_set_fmt_to_snr(struct video_device *vdev,
 		ffmt->width, ffmt->height, padding_w, padding_h,
 		dvs_env_w, dvs_env_h);
 
-	__atomisp_init_stream_info(stream_index, stream_info);
+	__atomisp_init_stream_info(ATOMISP_INPUT_STREAM_GENERAL, stream_info);
 
 	req_ffmt = ffmt;
 
@@ -5122,7 +5114,7 @@ static int atomisp_set_fmt_to_snr(struct video_device *vdev,
 	if (ret)
 		return ret;
 
-	__atomisp_update_stream_env(asd, stream_index, stream_info);
+	__atomisp_update_stream_env(asd, ATOMISP_INPUT_STREAM_GENERAL, stream_info);
 
 	dev_dbg(isp->dev, "sensor width: %d, height: %d\n",
 		ffmt->width, ffmt->height);
@@ -5841,12 +5833,6 @@ int atomisp_flash_enable(struct atomisp_sub_device *asd, int num_frames)
 	return 0;
 }
 
-int atomisp_source_pad_to_stream_id(struct atomisp_sub_device *asd,
-				    uint16_t source_pad)
-{
-	return ATOMISP_INPUT_STREAM_GENERAL;
-}
-
 bool atomisp_is_vf_pipe(struct atomisp_video_pipe *pipe)
 {
 	struct atomisp_sub_device *asd = pipe->asd;
diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.h b/drivers/staging/media/atomisp/pci/atomisp_cmd.h
index ba3433a63595..c9f92f1326b6 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.h
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.h
@@ -297,8 +297,6 @@ void atomisp_buf_done(struct atomisp_sub_device *asd, int error,
 		      bool q_buffers, enum atomisp_input_stream_id stream_id);
 
 void atomisp_css_flush(struct atomisp_device *isp);
-int atomisp_source_pad_to_stream_id(struct atomisp_sub_device *asd,
-				    uint16_t source_pad);
 
 /* Events. Only one event has to be exported for now. */
 void atomisp_eof_event(struct atomisp_sub_device *asd, uint8_t exp_id);
diff --git a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
index 64dd63ddc29c..fdc05548d972 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
@@ -1427,7 +1427,6 @@ int atomisp_css_get_grid_info(struct atomisp_sub_device *asd,
 	struct ia_css_pipe_info p_info;
 	struct ia_css_grid_info old_info;
 	struct atomisp_device *isp = asd->isp;
-	int stream_index = atomisp_source_pad_to_stream_id(asd, source_pad);
 	int md_width = asd->stream_env[ATOMISP_INPUT_STREAM_GENERAL].
 		       stream_config.metadata_config.resolution.width;
 
@@ -1435,7 +1434,7 @@ int atomisp_css_get_grid_info(struct atomisp_sub_device *asd,
 	memset(&old_info, 0, sizeof(struct ia_css_grid_info));
 
 	if (ia_css_pipe_get_info(
-		asd->stream_env[stream_index].pipes[pipe_id],
+		asd->stream_env[ATOMISP_INPUT_STREAM_GENERAL].pipes[pipe_id],
 		&p_info) != 0) {
 		dev_err(isp->dev, "ia_css_pipe_get_info failed\n");
 		return -EINVAL;
@@ -2680,11 +2679,11 @@ int atomisp_get_css_frame_info(struct atomisp_sub_device *asd,
 	struct atomisp_device *isp = asd->isp;
 
 	if (ATOMISP_SOC_CAMERA(asd)) {
-		stream_index = atomisp_source_pad_to_stream_id(asd, source_pad);
+		stream_index = ATOMISP_INPUT_STREAM_GENERAL;
 	} else {
 		stream_index = (pipe_index == IA_CSS_PIPE_ID_YUVPP) ?
 			       ATOMISP_INPUT_STREAM_VIDEO :
-			       atomisp_source_pad_to_stream_id(asd, source_pad);
+			       ATOMISP_INPUT_STREAM_GENERAL;
 	}
 
 	if (0 != ia_css_pipe_get_info(asd->stream_env[stream_index]
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index cbbb25d3e5fe..aefa7c07242a 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -1112,11 +1112,8 @@ int atomisp_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *req
 	struct ia_css_frame *frame;
 	struct videobuf_vmalloc_memory *vm_mem;
 	u16 source_pad = atomisp_subdev_source_pad(vdev);
-	u16 stream_id;
 	int ret = 0, i = 0;
 
-	stream_id = atomisp_source_pad_to_stream_id(asd, source_pad);
-
 	if (req->count == 0) {
 		mutex_lock(&pipe->capq.vb_lock);
 		if (!list_empty(&pipe->capq.stream))
@@ -1137,7 +1134,7 @@ int atomisp_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *req
 	if (ret)
 		return ret;
 
-	atomisp_alloc_css_stat_bufs(asd, stream_id);
+	atomisp_alloc_css_stat_bufs(asd, ATOMISP_INPUT_STREAM_GENERAL);
 
 	/*
 	 * for user pointer type, buffers are not really allocated here,
diff --git a/drivers/staging/media/atomisp/pci/atomisp_subdev.c b/drivers/staging/media/atomisp/pci/atomisp_subdev.c
index 88bf693f4c50..27a7cd98f935 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_subdev.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_subdev.c
@@ -373,16 +373,12 @@ int atomisp_subdev_set_selection(struct v4l2_subdev *sd,
 	struct atomisp_sub_device *isp_sd = v4l2_get_subdevdata(sd);
 	struct atomisp_device *isp = isp_sd->isp;
 	struct v4l2_mbus_framefmt *ffmt[ATOMISP_SUBDEV_PADS_NUM];
-	u16 vdev_pad = atomisp_subdev_source_pad(sd->devnode);
 	struct v4l2_rect *crop[ATOMISP_SUBDEV_PADS_NUM],
 		       *comp[ATOMISP_SUBDEV_PADS_NUM];
-	enum atomisp_input_stream_id stream_id;
 	unsigned int i;
 	unsigned int padding_w = pad_w;
 	unsigned int padding_h = pad_h;
 
-	stream_id = atomisp_source_pad_to_stream_id(isp_sd, vdev_pad);
-
 	isp_get_fmt_rect(sd, sd_state, which, ffmt, crop, comp);
 
 	dev_dbg(isp->dev,
@@ -478,7 +474,8 @@ int atomisp_subdev_set_selection(struct v4l2_subdev *sd,
 			dvs_w = dvs_h = 0;
 		}
 		atomisp_css_video_set_dis_envelope(isp_sd, dvs_w, dvs_h);
-		atomisp_css_input_set_effective_resolution(isp_sd, stream_id,
+		atomisp_css_input_set_effective_resolution(
+			isp_sd, ATOMISP_INPUT_STREAM_GENERAL,
 			crop[pad]->width, crop[pad]->height);
 
 		break;
@@ -523,14 +520,14 @@ int atomisp_subdev_set_selection(struct v4l2_subdev *sd,
 		if (r->width * crop[ATOMISP_SUBDEV_PAD_SINK]->height <
 		    crop[ATOMISP_SUBDEV_PAD_SINK]->width * r->height)
 			atomisp_css_input_set_effective_resolution(isp_sd,
-				stream_id,
+				ATOMISP_INPUT_STREAM_GENERAL,
 				rounddown(crop[ATOMISP_SUBDEV_PAD_SINK]->
 					  height * r->width / r->height,
 					  ATOM_ISP_STEP_WIDTH),
 				crop[ATOMISP_SUBDEV_PAD_SINK]->height);
 		else
 			atomisp_css_input_set_effective_resolution(isp_sd,
-				stream_id,
+				ATOMISP_INPUT_STREAM_GENERAL,
 				crop[ATOMISP_SUBDEV_PAD_SINK]->width,
 				rounddown(crop[ATOMISP_SUBDEV_PAD_SINK]->
 					  width * r->height / r->width,
@@ -620,16 +617,12 @@ void atomisp_subdev_set_ffmt(struct v4l2_subdev *sd,
 	struct atomisp_device *isp = isp_sd->isp;
 	struct v4l2_mbus_framefmt *__ffmt =
 	    atomisp_subdev_get_ffmt(sd, sd_state, which, pad);
-	u16 vdev_pad = atomisp_subdev_source_pad(sd->devnode);
-	enum atomisp_input_stream_id stream_id;
 
 	dev_dbg(isp->dev, "ffmt: pad %s w %d h %d code 0x%8.8x which %s\n",
 		atomisp_pad_str(pad), ffmt->width, ffmt->height, ffmt->code,
 		which == V4L2_SUBDEV_FORMAT_TRY ? "V4L2_SUBDEV_FORMAT_TRY"
 		: "V4L2_SUBDEV_FORMAT_ACTIVE");
 
-	stream_id = atomisp_source_pad_to_stream_id(isp_sd, vdev_pad);
-
 	switch (pad) {
 	case ATOMISP_SUBDEV_PAD_SINK: {
 		const struct atomisp_in_fmt_conv *fc =
@@ -649,15 +642,15 @@ void atomisp_subdev_set_ffmt(struct v4l2_subdev *sd,
 
 		if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 			atomisp_css_input_set_resolution(isp_sd,
-							 stream_id, ffmt);
+							 ATOMISP_INPUT_STREAM_GENERAL, ffmt);
 			atomisp_css_input_set_binning_factor(isp_sd,
-							     stream_id,
+							     ATOMISP_INPUT_STREAM_GENERAL,
 							     atomisp_get_sensor_bin_factor(isp_sd));
-			atomisp_css_input_set_bayer_order(isp_sd, stream_id,
+			atomisp_css_input_set_bayer_order(isp_sd, ATOMISP_INPUT_STREAM_GENERAL,
 							  fc->bayer_order);
-			atomisp_css_input_set_format(isp_sd, stream_id,
+			atomisp_css_input_set_format(isp_sd, ATOMISP_INPUT_STREAM_GENERAL,
 						     fc->atomisp_in_fmt);
-			atomisp_css_set_default_isys_config(isp_sd, stream_id,
+			atomisp_css_set_default_isys_config(isp_sd, ATOMISP_INPUT_STREAM_GENERAL,
 							    ffmt);
 		}
 
