[PATCH v5 0/4] Add AIE driver support for mt8188

[PATCH v5 0/4] Add AIE driver support for mt8188

[bo.kong]

From: Bo Kong <Bo.Kong@mediatek.com>

AIE(AI Engine) is one of the units in mt8188 ISP which provides hardware accelerated face detection function, it can detect different sizes of faces in a raw image.

Bo Kong (4):
  media: dt-bindings: add MT8188 AIE
  arm64: dts: mt8188: add aie node
  uapi: linux: add MT8188 AIE
  media: mediatek: add MT8188 AIE driver

 .../bindings/media/mediatek,mt8188-aie.yaml   |   78 +
 arch/arm64/boot/dts/mediatek/mt8188.dtsi      |   33 +
 drivers/media/platform/mediatek/Kconfig       |    1 +
 drivers/media/platform/mediatek/Makefile      |    1 +
 drivers/media/platform/mediatek/aie/Kconfig   |   12 +
 drivers/media/platform/mediatek/aie/Makefile  |    5 +
 drivers/media/platform/mediatek/aie/mtk_aie.h |  870 ++++++
 .../media/platform/mediatek/aie/mtk_aie_drv.c | 2398 +++++++++++++++++
 .../platform/mediatek/aie/mtk_aie_v4l2.c      | 1295 +++++++++
 drivers/media/v4l2-core/v4l2-ioctl.c          |    3 +
 include/uapi/linux/mtk_aie_v4l2_controls.h    |  308 +++
 include/uapi/linux/videodev2.h                |    6 +
 12 files changed, 5010 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml
 create mode 100644 drivers/media/platform/mediatek/aie/Kconfig
 create mode 100644 drivers/media/platform/mediatek/aie/Makefile
 create mode 100644 drivers/media/platform/mediatek/aie/mtk_aie.h
 create mode 100644 drivers/media/platform/mediatek/aie/mtk_aie_drv.c
 create mode 100644 drivers/media/platform/mediatek/aie/mtk_aie_v4l2.c
 create mode 100644 include/uapi/linux/mtk_aie_v4l2_controls.h

-- 
2.45.2

[PATCH v5 1/4] media: dt-bindings: add MT8188 AIE

[bo.kong]

From: Bo Kong <Bo.Kong@mediatek.com>

Add YAML device tree bindings for MT8188 AIE.

Signed-off-by: Bo Kong <Bo.Kong@mediatek.com>
---
Changes in v5:
1. Modify the description to make it more concise.
2. Delete the description of reg.
3. Modify the description of iommus and delete the maxItems of iommus.
4. Delete all mediatek,larb.
5. Modify the name of clock, change _ to -.

Changes in v4:
1. Remove address-cells and size-cells
2. Remove larb12 related content
3. Update id content

Changes in v3:
None

Changes in v2:
1. Fix coding style
---
 .../bindings/media/mediatek,mt8188-aie.yaml   | 78 +++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml

diff --git a/Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml b/Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml
new file mode 100644
index 000000000000..861110bb0c98
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml
@@ -0,0 +1,78 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/mediatek,mt8188-aie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: The AI Engine Unit of MediaTek Camera System
+
+maintainers:
+  - Bo Kong <bo.kong@mediatek.com>
+
+description:
+  AIE(AI Engine) provides a hardware-accelerated face detection function.
+
+properties:
+  compatible:
+    items:
+      - const: mediatek,mt8188-aie
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  iommus:
+    description:
+      List of the hardware port in respective IOMMU block for current Socs.
+      Refer to bindings/iommu/mediatek,iommu.yaml.
+
+  power-domains:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: clock for imgsys main ipe
+      - description: clock for ipe fdvt
+      - description: clock for ipe top
+
+  clock-names:
+    items:
+      - const: img-ipe
+      - const: ipe-fdvt
+      - const: ipe-top
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - iommus
+  - power-domains
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/memory/mediatek,mt8188-memory-port.h>
+    #include <dt-bindings/power/mediatek,mt8188-power.h>
+    #include <dt-bindings/clock/mediatek,mt8188-clk.h>
+    aie@15310000 {
+      compatible = "mediatek,mt8188-aie";
+      reg = <0x15310000 0x1000>;
+      interrupts = <GIC_SPI 787 IRQ_TYPE_LEVEL_HIGH 0>;
+      iommus = <&vpp_iommu M4U_PORT_L12_FDVT_RDA_0>,
+               <&vpp_iommu M4U_PORT_L12_FDVT_RDB_0>,
+               <&vpp_iommu M4U_PORT_L12_FDVT_WRA_0>,
+               <&vpp_iommu M4U_PORT_L12_FDVT_WRB_0>;
+      power-domains = <&spm MT8188_POWER_DOMAIN_IPE>;
+      clocks = <&imgsys CLK_IMGSYS_MAIN_IPE>,
+               <&ipesys CLK_IPE_FDVT>,
+               <&ipesys CLK_IPESYS_TOP>;
+      clock-names = "img-ipe",
+                    "ipe-fdvt",
+                    "ipe-top";
+    };
-- 
2.45.2

Re: [PATCH v5 1/4] media: dt-bindings: add MT8188 AIE

[Krzysztof Kozlowski]

On 03/04/2025 09:38, bo.kong wrote:
> From: Bo Kong <Bo.Kong@mediatek.com>
> 
> Add YAML device tree bindings for MT8188 AIE.
> 
> Signed-off-by: Bo Kong <Bo.Kong@mediatek.com>
> ---
<form letter>
Please use scripts/get_maintainers.pl to get a list of necessary people
and lists to CC. It might happen, that command when run on an older
kernel, gives you outdated entries. Therefore please be sure you base
your patches on recent Linux kernel.

Tools like b4 or scripts/get_maintainer.pl provide you proper list of
people, so fix your workflow. Tools might also fail if you work on some
ancient tree (don't, instead use mainline) or work on fork of kernel
(don't, instead use mainline). Just use b4 and everything should be
fine, although remember about `b4 prep --auto-to-cc` if you added new
patches to the patchset.

You missed at least devicetree list (maybe more), so this won't be
tested by automated tooling. Performing review on untested code might be
a waste of time.

Please kindly resend and include all necessary To/Cc entries.
</form letter>

Best regards,
Krzysztof

[PATCH v5 2/4] arm64: dts: mt8188: add aie node

[bo.kong]

From: Bo Kong <Bo.Kong@mediatek.com>

Add aie node and related node

Signed-off-by: Bo Kong <Bo.Kong@mediatek.com>
---
Changes in v5:
1.Modify the name of clock, change _ to -.

Changes in v4:
None

Changes in v3:
1. Remove dts non-MMIO nodes

Changes in v2:
1. Add AIE node and related node
---
 arch/arm64/boot/dts/mediatek/mt8188.dtsi | 33 ++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8188.dtsi b/arch/arm64/boot/dts/mediatek/mt8188.dtsi
index 69a8423d3858..641de110321a 100644
--- a/arch/arm64/boot/dts/mediatek/mt8188.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8188.dtsi
@@ -2330,12 +2330,45 @@ imgsys_wpe1: clock-controller@15220000 {
 			#clock-cells = <1>;
 		};
 
+		aie: aie@15310000 {
+			compatible = "mediatek,mt8188-aie";
+			reg = <0 0x15310000 0 0x1000>;
+			interrupts = <GIC_SPI 787 IRQ_TYPE_LEVEL_HIGH 0>;
+			mediatek,larb = <&larb12>;
+			iommus = <&vpp_iommu M4U_PORT_L12_FDVT_RDA_0>,
+				 <&vpp_iommu M4U_PORT_L12_FDVT_RDB_0>,
+				 <&vpp_iommu M4U_PORT_L12_FDVT_WRA_0>,
+				 <&vpp_iommu M4U_PORT_L12_FDVT_WRB_0>;
+			power-domains = <&spm MT8188_POWER_DOMAIN_IPE>;
+			clocks = <&imgsys CLK_IMGSYS_MAIN_IPE>,
+				 <&ipesys CLK_IPE_FDVT>,
+				 <&ipesys CLK_IPE_SMI_LARB12>,
+				 <&ipesys CLK_IPESYS_TOP>;
+			clock-names = "img-ipe",
+				      "ipe-fdvt",
+				      "ipe-smi-larb12",
+				      "ipe-top";
+		};
+
 		ipesys: clock-controller@15330000 {
 			compatible = "mediatek,mt8188-ipesys";
 			reg = <0 0x15330000 0 0x1000>;
 			#clock-cells = <1>;
 		};
 
+		larb12: larb@15340000 {
+			compatible = "mediatek,mt8188-smi-larb";
+			reg = <0 0x15340000 0 0x1000>;
+			mediatek,larb-id = <SMI_L12_ID>;
+			mediatek,smi = <&vpp_smi_common>;
+			mediatek,smi-sub-comm = <&smi_img1>;
+			mediatek,smi-sub-comm-inport = <0>;
+			clocks = <&imgsys CLK_IMGSYS_MAIN_IPE>,
+				 <&ipesys CLK_IPE_SMI_LARB12>;
+			clock-names = "apb", "smi";
+			power-domains = <&spm MT8188_POWER_DOMAIN_IPE>;
+		};
+
 		imgsys_wpe2: clock-controller@15520000 {
 			compatible = "mediatek,mt8188-imgsys-wpe2";
 			reg = <0 0x15520000 0 0x1000>;
-- 
2.45.2

Re: [PATCH v5 2/4] arm64: dts: mt8188: add aie node

[Krzysztof Kozlowski]

On 03/04/2025 09:38, bo.kong wrote:
> From: Bo Kong <Bo.Kong@mediatek.com>
> 
> Add aie node and related node
> 
> Signed-off-by: Bo Kong <Bo.Kong@mediatek.com>
> ---
<form letter>
Please use scripts/get_maintainers.pl to get a list of necessary people
and lists to CC (and consider --no-git-fallback argument, so you will
not CC people just because they made one commit years ago). It might
happen, that command when run on an older kernel, gives you outdated
entries. Therefore please be sure you base your patches on recent Linux
kernel.

Tools like b4 or scripts/get_maintainer.pl provide you proper list of
people, so fix your workflow. Tools might also fail if you work on some
ancient tree (don't, instead use mainline) or work on fork of kernel
(don't, instead use mainline). Just use b4 and everything should be
fine, although remember about `b4 prep --auto-to-cc` if you added new
patches to the patchset.
</form letter>

Best regards,
Krzysztof

[PATCH v5 3/4] uapi: linux: add MT8188 AIE

[bo.kong]

From: Bo Kong <Bo.Kong@mediatek.com>

Add AIE control related definitions.

Signed-off-by: Bo Kong <Bo.Kong@mediatek.com>
---
Changes in v5:
1. Add an introduction for feature_threshold.
2. Change the name of v4l2_aie_roi to aie_roi_coordinate.
3. Change the name of v4l2_aie_padding to aie_padding_size.
4. Add an explanation for en_padding and describe the functions of the three modes of fd_mode.
5. Move the structures in the mtk_aie.h file to the uapi directory.

Changes in v4:
1. Add document to describe the detail of V4L2_META_FMT_MTFD_RESULT
2. Add the introduction of related variables

Changes in v3:
None

Changes in v2:
1. Fix coding style
---
 drivers/media/v4l2-core/v4l2-ioctl.c       |   3 +
 include/uapi/linux/mtk_aie_v4l2_controls.h | 308 +++++++++++++++++++++
 include/uapi/linux/videodev2.h             |   6 +
 3 files changed, 317 insertions(+)
 create mode 100644 include/uapi/linux/mtk_aie_v4l2_controls.h

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index a16fb44c7246..74d0d13f841f 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1479,6 +1479,9 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 	case V4L2_META_FMT_GENERIC_CSI2_16:	descr = "8-bit Generic Meta, 16b CSI-2"; break;
 	case V4L2_META_FMT_GENERIC_CSI2_20:	descr = "8-bit Generic Meta, 20b CSI-2"; break;
 	case V4L2_META_FMT_GENERIC_CSI2_24:	descr = "8-bit Generic Meta, 24b CSI-2"; break;
+	case V4L2_META_FMT_MTFD_RESULT:
+		descr = "MTK AIE Result Fmt";
+	break;
 
 	default:
 		/* Compressed formats */
diff --git a/include/uapi/linux/mtk_aie_v4l2_controls.h b/include/uapi/linux/mtk_aie_v4l2_controls.h
new file mode 100644
index 000000000000..952dcdb23283
--- /dev/null
+++ b/include/uapi/linux/mtk_aie_v4l2_controls.h
@@ -0,0 +1,308 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * AIE Controls Header
+ *
+ * Copyright (c) 2020 MediaTek Inc.
+ * Author: Bo Kong <bo.kong@mediatek.com>
+ */
+
+#ifndef __MTK_AIE_V4L2_CONTROLS_H__
+#define __MTK_AIE_V4L2_CONTROLS_H__
+
+#include <linux/types.h>
+
+/*
+ * The base for the mediatek Face Detection driver controls.
+ * We reserve 16 controls for this driver.
+ * Each CID represents different stages of AIE, with different structures and functions
+ * and cannot be reused
+ */
+#define V4L2_CID_USER_MTK_FD_BASE (V4L2_CID_USER_BASE + 0x1fd0)
+#define V4L2_CID_MTK_AIE_INIT (V4L2_CID_USER_MTK_FD_BASE + 1)
+#define V4L2_CID_MTK_AIE_PARAM (V4L2_CID_USER_MTK_FD_BASE + 2)
+
+#define MAX_FACE_NUM			1024
+#define FLD_CUR_LANDMARK		11
+#define FLD_MAX_FRAME			15
+
+/**
+ * struct v4l2_ctrl_aie_init - aie init parameters.
+ *
+ * @max_img_width: maximum width of the source image.
+ * @max_img_height: maximum height of the source image.
+ * @pyramid_width: maximum width of the base pyramid.
+ * @pyramid_height: maximum height of the base pyramid.
+ * @feature_threshold: The threshold for the face confidence.Range: 100 ~ 400.
+ *                     The larger the value,the lower the face recognition rate
+ */
+struct v4l2_ctrl_aie_init {
+	__u32 max_img_width;
+	__u32 max_img_height;
+	__u32 pyramid_width;
+	__u32 pyramid_height;
+	__s32 feature_threshold;
+};
+
+/**
+ * struct aie_roi_coordinate - aie roi parameters.
+ *
+ * @x1: x1 of the roi coordinate.
+ * @y1: y1 of the roi coordinate.
+ * @x2: x2 of the roi coordinate.
+ * @y2: y2 of the roi coordinate.
+ */
+struct aie_roi_coordinate {
+	__u32 x1;
+	__u32 y1;
+	__u32 x2;
+	__u32 y2;
+};
+
+/**
+ * struct aie_padding_size - aie padding parameters.
+ *
+ * @left: the size of padding left.
+ * @right: the size of padding right.
+ * @down: the size of padding below.
+ * @up: the size of padding above.
+ */
+struct aie_padding_size {
+	__u32 left;
+	__u32 right;
+	__u32 down;
+	__u32 up;
+};
+
+/**
+ * struct v4l2_fld_crop_rip_rop - aie fld parameters.
+ *
+ * @fld_in_crop_x1: x1 of the crop coordinate.
+ * @fld_in_crop_y1: y1 of the crop coordinate.
+ * @fld_in_crop_x2: x2 of the crop coordinate.
+ * @fld_in_crop_y2: y2 of the crop coordinate.
+ * @fld_in_rip: fld in rip.
+ * @fld_in_rop: fld in rop.
+ */
+struct v4l2_fld_crop_rip_rop {
+	__u32 fld_in_crop_x1;
+	__u32 fld_in_crop_y1;
+	__u32 fld_in_crop_x2;
+	__u32 fld_in_crop_y2;
+	__u32 fld_in_rip;
+	__u32 fld_in_rop;
+};
+
+/**
+ * struct fd_ret - aie fd result parameters.
+ *
+ * @anchor_x0: X coordinate of the top-left corner of each detected face.
+ * @anchor_x1: X coordinate of the bottom-right corner of each detected face.
+ * @anchor_y0: Y coordinate of the top-left corner of each detected face.
+ * @anchor_y1: Y coordinate of the bottom-right corner of each detected face.
+ * @rop_landmark_score0: Score for the first rotation pose landmark.
+ * @rop_landmark_score1: Score for the second rotation pose landmark.
+ * @rop_landmark_score2: Score for the third rotation pose landmark.
+ * @anchor_score: Score for the anchor points.
+ * @rip_landmark_score0: Score for the first rotation-invariant pose landmark.
+ * @rip_landmark_score1: Score for the second rotation-invariant pose landmark.
+ * @rip_landmark_score2: Score for the third rotation-invariant pose landmark.
+ * @rip_landmark_score3: Score for the fourth rotation-invariant pose landmark.
+ * @rip_landmark_score4: Score for the fifth rotation-invariant pose landmark.
+ * @rip_landmark_score5: Score for the sixth rotation-invariant pose landmark.
+ * @rip_landmark_score6: Score for the seventh rotation-invariant pose landmark.
+ * @face_result_index: Index of each detected face.
+ * @anchor_index: Index of the anchor points.
+ * @fd_partial_result: Partial face detection result.
+ */
+struct fd_ret {
+	__u16 anchor_x0[MAX_FACE_NUM];
+	__u16 anchor_x1[MAX_FACE_NUM];
+	__u16 anchor_y0[MAX_FACE_NUM];
+	__u16 anchor_y1[MAX_FACE_NUM];
+	__s16 rop_landmark_score0[MAX_FACE_NUM];
+	__s16 rop_landmark_score1[MAX_FACE_NUM];
+	__s16 rop_landmark_score2[MAX_FACE_NUM];
+	__s16 anchor_score[MAX_FACE_NUM];
+	__s16 rip_landmark_score0[MAX_FACE_NUM];
+	__s16 rip_landmark_score1[MAX_FACE_NUM];
+	__s16 rip_landmark_score2[MAX_FACE_NUM];
+	__s16 rip_landmark_score3[MAX_FACE_NUM];
+	__s16 rip_landmark_score4[MAX_FACE_NUM];
+	__s16 rip_landmark_score5[MAX_FACE_NUM];
+	__s16 rip_landmark_score6[MAX_FACE_NUM];
+	__u16 face_result_index[MAX_FACE_NUM];
+	__u16 anchor_index[MAX_FACE_NUM];
+	__u32 fd_partial_result;
+};
+
+/**
+ * struct fd_result - Face detection results for different pyramid levels.
+ *
+ * @fd_pyramid0_num: Number of faces detected at pyramid level 0.
+ * @fd_pyramid1_num: Number of faces detected at pyramid level 1.
+ * @fd_pyramid2_num: Number of faces detected at pyramid level 2.
+ * @fd_total_num: Total number of faces detected across all pyramid levels.
+ * @pyramid0_result: Detection results for pyramid level 0.
+ * @pyramid1_result: Detection results for pyramid level 1.
+ * @pyramid2_result: Detection results for pyramid level 2.
+ */
+struct fd_result {
+	__u16 fd_pyramid0_num;
+	__u16 fd_pyramid1_num;
+	__u16 fd_pyramid2_num;
+	__u16 fd_total_num;
+	struct fd_ret pyramid0_result;
+	struct fd_ret pyramid1_result;
+	struct fd_ret pyramid2_result;
+};
+
+/**
+ * struct attr_result - Attribute detection results parameters.
+ *
+ * @gender_ret: Gender detection results.
+ * @ethnicity_ret: Ethnicity detection results.
+ * @merged_age_ret: Merged age detection results.
+ * @merged_gender_ret: Merged gender detection results.
+ * @merged_is_indian_ret: Merged results indicating if the subject is Indian.
+ * @merged_ethnicity_ret: Merged ethnicity detection results.
+ */
+struct attr_result {
+	__s16 gender_ret[2][64];
+	__s16 ethnicity_ret[4][64];
+	__s16 merged_age_ret[2];
+	__s16 merged_gender_ret[2];
+	__s16 merged_is_indian_ret[2];
+	__s16 merged_ethnicity_ret[4];
+};
+
+/**
+ * struct fld_landmark - FLD coordinates parameters.
+ *
+ * @x: X coordinate of the facial landmark.
+ * @y: Y coordinate of the facial landmark.
+ */
+struct fld_landmark {
+	__u16 x;
+	__u16 y;
+};
+
+/**
+ * struct fld_result - FLD detection results parameters.
+ *
+ * @fld_landmark: Array of facial landmarks, each with X and Y coordinates.
+ * @fld_out_rip: Output rotation-invariant pose value.
+ * @fld_out_rop: Output rotation pose value.
+ * @confidence: Confidence score of the facial landmark detection.
+ * @blinkscore: Blink score indicating the likelihood of eye blink.
+ */
+struct fld_result {
+	struct fld_landmark fld_landmark[FLD_CUR_LANDMARK];
+	__u16 fld_out_rip;
+	__u16 fld_out_rop;
+	__u16 confidence;
+	__s16 blinkscore;
+};
+
+/**
+ * struct aie_enq_info - V4L2 Kernelspace parameters.
+ *
+ * @sel_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for current fd.
+ *           FDMODE: Face Detection.
+ *           ATTRIBUTEMODE: Gender and ethnicity detection
+ *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and mouth
+ * @src_img_fmt: source image format.
+ * @src_img_width: the width of the source image.
+ * @src_img_height: the height of the source image.
+ * @src_img_stride: the stride of the source image.
+ * @pyramid_base_width: pyramid is the size of resizer, the width of the base pyramid.
+ * @pyramid_base_height: pyramid is the size of resizer, the width of the base pyramid.
+ * @number_of_pyramid: number of pyramid, min: 1, max: 3.
+ * @rotate_degree: the rotate degree of the image.
+ * @en_roi: enable roi(roi is a box diagram that selects a rectangle in a picture).
+ *          when en_roi is enable, AIE will return a rectangle face detection result
+ * @src_roi: roi params.
+ * @en_padding: enable padding, this is only used on the hardware of yuv to rgb.
+ *              and has noting to do with fd_mode
+ * @src_padding: padding params.
+ * @freq_level: frequency level, Get value from user space enque.
+ * @fld_face_num: the number of faces in fld.
+ *                user space tells driver the number of detections.
+ * @fld_input: fld input params.
+ * @src_img_addr: Source image address.
+ * @src_img_addr_uv: Source image address for UV plane.
+ * @fd_out: Face detection results.
+ * @attr_out: Attribute detection results.
+ * @fld_out: Array of facial landmark detection results for multiple frames.
+ * @irq_status: Interrupt request status.
+ */
+struct aie_enq_info {
+	__u32 sel_mode;
+	__u32 src_img_fmt;
+	__u32 src_img_width;
+	__u32 src_img_height;
+	__u32 src_img_stride;
+	__u32 pyramid_base_width;
+	__u32 pyramid_base_height;
+	__u32 number_of_pyramid;
+	__u32 rotate_degree;
+	int en_roi;
+	struct aie_roi_coordinate src_roi;
+	int en_padding;
+	struct aie_padding_size src_padding;
+	unsigned int freq_level;
+	unsigned int fld_face_num;
+	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];
+	__u32 src_img_addr;
+	__u32 src_img_addr_uv;
+	struct fd_result fd_out;
+	struct attr_result attr_out;
+	struct fld_result fld_out[FLD_MAX_FRAME];
+	__u32 irq_status;
+};
+
+/**
+ * struct v4l2_ctrl_aie_param - V4L2 Userspace parameters.
+ *
+ * @fd_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for current fd.
+ *           FDMODE: Face Detection.
+ *           ATTRIBUTEMODE: Gender and ethnicity detection
+ *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and mouth
+ * @src_img_fmt: source image format.
+ * @src_img_width: the width of the source image.
+ * @src_img_height: the height of the source image.
+ * @src_img_stride: the stride of the source image.
+ * @pyramid_base_width: pyramid is the size of resizer, the width of the base pyramid.
+ * @pyramid_base_height: pyramid is the size of resizer, the width of the base pyramid.
+ * @number_of_pyramid: number of pyramid, min: 1, max: 3.
+ * @rotate_degree: the rotate degree of the image.
+ * @en_roi: enable roi(roi is a box diagram that selects a rectangle in a picture).
+ *          when en_roi is enable, AIE will return a rectangle face detection result
+ * @src_roi: roi params.
+ * @en_padding: enable padding, this is only used on the hardware of yuv to rgb.
+ *              and has noting to do with fd_mode
+ * @src_padding: padding params.
+ * @freq_level: frequency level, Get value from user space enque.
+ * @fld_face_num: the number of faces in fld.
+ *                user space tells driver the number of detections.
+ * @fld_input: fld input params.
+ */
+struct v4l2_ctrl_aie_param {
+	__u32 fd_mode;
+	__u32 src_img_fmt;
+	__u32 src_img_width;
+	__u32 src_img_height;
+	__u32 src_img_stride;
+	__u32 pyramid_base_width;
+	__u32 pyramid_base_height;
+	__u32 number_of_pyramid;
+	__u32 rotate_degree;
+	__s32 en_roi;
+	struct aie_roi_coordinate src_roi;
+	__s32 en_padding;
+	struct aie_padding_size src_padding;
+	__u32 freq_level;
+	__u32 fld_face_num;
+	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];
+};
+
+#endif /* __MTK_AIE_V4L2_CONTROLS_H__ */
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index c8cb2796130f..329bbac9239e 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -858,6 +858,9 @@ struct v4l2_pix_format {
 #define V4L2_META_FMT_RK_ISP1_STAT_3A	v4l2_fourcc('R', 'K', '1', 'S') /* Rockchip ISP1 3A Statistics */
 #define V4L2_META_FMT_RK_ISP1_EXT_PARAMS	v4l2_fourcc('R', 'K', '1', 'E') /* Rockchip ISP1 3a Extensible Parameters */
 
+/* Vendor-specific definition: used for the MediaTek camera subsystem's face detection results */
+#define V4L2_META_FMT_MTFD_RESULT	v4l2_fourcc('M', 'T', 'f', 'd')
+
 /* Vendor specific - used for RaspberryPi PiSP */
 #define V4L2_META_FMT_RPI_BE_CFG	v4l2_fourcc('R', 'P', 'B', 'C') /* PiSP BE configuration */
 #define V4L2_META_FMT_RPI_FE_CFG	v4l2_fourcc('R', 'P', 'F', 'C') /* PiSP FE configuration */
@@ -1965,6 +1968,9 @@ enum v4l2_ctrl_type {
 	V4L2_CTRL_TYPE_AV1_TILE_GROUP_ENTRY = 0x281,
 	V4L2_CTRL_TYPE_AV1_FRAME	    = 0x282,
 	V4L2_CTRL_TYPE_AV1_FILM_GRAIN	    = 0x283,
+
+	V4L2_CTRL_TYPE_AIE_INIT		= 0x0290,
+	V4L2_CTRL_TYPE_AIE_PARAM	= 0x0291,
 };
 
 /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
-- 
2.45.2

Re: [PATCH v5 3/4] uapi: linux: add MT8188 AIE

[CK Hu (胡俊光)]

On Thu, 2025-04-03 at 15:38 +0800, bo.kong wrote:
> From: Bo Kong <Bo.Kong@mediatek.com>
> 
> Add AIE control related definitions.

Laurent has asked you to provide document of the UAPI.
If you have no idea what to write to this document,
I ask you question in this mail and you write the answer to the document.

> 
> Signed-off-by: Bo Kong <Bo.Kong@mediatek.com>
> ---

[snip]

> diff --git a/include/uapi/linux/mtk_aie_v4l2_controls.h b/include/uapi/linux/mtk_aie_v4l2_controls.h
> new file mode 100644
> index 000000000000..952dcdb23283
> --- /dev/null
> +++ b/include/uapi/linux/mtk_aie_v4l2_controls.h
> @@ -0,0 +1,308 @@
> +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> +/*
> + * AIE Controls Header
> + *
> + * Copyright (c) 2020 MediaTek Inc.
> + * Author: Bo Kong <bo.kong@mediatek.com>
> + */
> +
> +#ifndef __MTK_AIE_V4L2_CONTROLS_H__
> +#define __MTK_AIE_V4L2_CONTROLS_H__
> +
> +#include <linux/types.h>
> +
> +/*
> + * The base for the mediatek Face Detection driver controls.
> + * We reserve 16 controls for this driver.
> + * Each CID represents different stages of AIE, with different structures and functions
> + * and cannot be reused
> + */
> +#define V4L2_CID_USER_MTK_FD_BASE (V4L2_CID_USER_BASE + 0x1fd0)
> +#define V4L2_CID_MTK_AIE_INIT (V4L2_CID_USER_MTK_FD_BASE + 1)
> +#define V4L2_CID_MTK_AIE_PARAM (V4L2_CID_USER_MTK_FD_BASE + 2)
> +
> +#define MAX_FACE_NUM			1024
> +#define FLD_CUR_LANDMARK		11
> +#define FLD_MAX_FRAME			15
> +
> +/**
> + * struct v4l2_ctrl_aie_init - aie init parameters.
> + *
> + * @max_img_width: maximum width of the source image.
> + * @max_img_height: maximum height of the source image.
> + * @pyramid_width: maximum width of the base pyramid.
> + * @pyramid_height: maximum height of the base pyramid.
> + * @feature_threshold: The threshold for the face confidence.Range: 100 ~ 400.
> + *                     The larger the value,the lower the face recognition rate
> + */
> +struct v4l2_ctrl_aie_init {
> +	__u32 max_img_width;
> +	__u32 max_img_height;

max image width/height is hardware limitation. This should be stored in driver.
User space program should use some V4L2 query interface to get this information.

> +	__u32 pyramid_width;
> +	__u32 pyramid_height;

Ditto.

> +	__s32 feature_threshold;

How to decide this value?
I guess there is a tuning process to find a reasonable threshold.
Is there only one reasonable threshold for all scenario?
If so, write done this one threshold in driver and user space is not necessary to set this value to driver.
If the threshold would vary for different scenario, for example, 168 for indoor video and 258 for outdoor video,
add comment to describe this so user space program have to detect the scenario of input video.

> +};
> +
> +/**
> + * struct aie_roi_coordinate - aie roi parameters.
> + *
> + * @x1: x1 of the roi coordinate.
> + * @y1: y1 of the roi coordinate.
> + * @x2: x2 of the roi coordinate.
> + * @y2: y2 of the roi coordinate.
> + */
> +struct aie_roi_coordinate {
> +	__u32 x1;
> +	__u32 y1;
> +	__u32 x2;
> +	__u32 y2;
> +};
> +
> +/**
> + * struct aie_padding_size - aie padding parameters.
> + *
> + * @left: the size of padding left.
> + * @right: the size of padding right.
> + * @down: the size of padding below.
> + * @up: the size of padding above.
> + */
> +struct aie_padding_size {
> +	__u32 left;
> +	__u32 right;
> +	__u32 down;
> +	__u32 up;
> +};
> +
> +/**
> + * struct v4l2_fld_crop_rip_rop - aie fld parameters.
> + *
> + * @fld_in_crop_x1: x1 of the crop coordinate.
> + * @fld_in_crop_y1: y1 of the crop coordinate.
> + * @fld_in_crop_x2: x2 of the crop coordinate.
> + * @fld_in_crop_y2: y2 of the crop coordinate.
> + * @fld_in_rip: fld in rip.
> + * @fld_in_rop: fld in rop.
> + */
> +struct v4l2_fld_crop_rip_rop {
> +	__u32 fld_in_crop_x1;
> +	__u32 fld_in_crop_y1;
> +	__u32 fld_in_crop_x2;
> +	__u32 fld_in_crop_y2;
> +	__u32 fld_in_rip;
> +	__u32 fld_in_rop;
> +};
> +
> +/**
> + * struct fd_ret - aie fd result parameters.
> + *
> + * @anchor_x0: X coordinate of the top-left corner of each detected face.
> + * @anchor_x1: X coordinate of the bottom-right corner of each detected face.
> + * @anchor_y0: Y coordinate of the top-left corner of each detected face.
> + * @anchor_y1: Y coordinate of the bottom-right corner of each detected face.
> + * @rop_landmark_score0: Score for the first rotation pose landmark.
> + * @rop_landmark_score1: Score for the second rotation pose landmark.
> + * @rop_landmark_score2: Score for the third rotation pose landmark.
> + * @anchor_score: Score for the anchor points.
> + * @rip_landmark_score0: Score for the first rotation-invariant pose landmark.
> + * @rip_landmark_score1: Score for the second rotation-invariant pose landmark.
> + * @rip_landmark_score2: Score for the third rotation-invariant pose landmark.
> + * @rip_landmark_score3: Score for the fourth rotation-invariant pose landmark.
> + * @rip_landmark_score4: Score for the fifth rotation-invariant pose landmark.
> + * @rip_landmark_score5: Score for the sixth rotation-invariant pose landmark.
> + * @rip_landmark_score6: Score for the seventh rotation-invariant pose landmark.
> + * @face_result_index: Index of each detected face.
> + * @anchor_index: Index of the anchor points.
> + * @fd_partial_result: Partial face detection result.
> + */
> +struct fd_ret {
> +	__u16 anchor_x0[MAX_FACE_NUM];
> +	__u16 anchor_x1[MAX_FACE_NUM];
> +	__u16 anchor_y0[MAX_FACE_NUM];
> +	__u16 anchor_y1[MAX_FACE_NUM];

I don't know why use 'anchor' for face coordinate.
Maybe this is trivial for AI domain, but I think there should be some brief introduction for who don't understand AI.

> +	__s16 rop_landmark_score0[MAX_FACE_NUM];
> +	__s16 rop_landmark_score1[MAX_FACE_NUM];
> +	__s16 rop_landmark_score2[MAX_FACE_NUM];

I don't know what is landmark.
Why there are 'first', 'second', and 'third' landmark?
Maybe this is trivial for AI domain, but I think there should be some brief introduction for who don't understand AI.

> +	__s16 anchor_score[MAX_FACE_NUM];
> +	__s16 rip_landmark_score0[MAX_FACE_NUM];
> +	__s16 rip_landmark_score1[MAX_FACE_NUM];
> +	__s16 rip_landmark_score2[MAX_FACE_NUM];
> +	__s16 rip_landmark_score3[MAX_FACE_NUM];
> +	__s16 rip_landmark_score4[MAX_FACE_NUM];
> +	__s16 rip_landmark_score5[MAX_FACE_NUM];
> +	__s16 rip_landmark_score6[MAX_FACE_NUM];
> +	__u16 face_result_index[MAX_FACE_NUM];

What is this index?
If fd_pyramid0_num is 100, so anchor_x0[0] ~ anchor_x0[99] is valid.
I don't know why need this index? 

> +	__u16 anchor_index[MAX_FACE_NUM];

What is this index?

> +	__u32 fd_partial_result;

What is this result?
Describe more so that everyone could understand this.

> +};

It's better that one face information is placed together in DRAM because it's easy to cache hit.
Then this structure would reform as:

struct face {
	__u16 anchor_x0;
	__u16 anchor_x1;
	__u16 anchor_y0;
	__u16 anchor_y1;
...
	__u16 anchor_index;
;

struct fd_ret {
	struct face face_result[MAX_FACE_NUM];
	__u32 fd_partial_result;
};

> +
> +/**
> + * struct fd_result - Face detection results for different pyramid levels.
> + *
> + * @fd_pyramid0_num: Number of faces detected at pyramid level 0.
> + * @fd_pyramid1_num: Number of faces detected at pyramid level 1.
> + * @fd_pyramid2_num: Number of faces detected at pyramid level 2.
> + * @fd_total_num: Total number of faces detected across all pyramid levels.
> + * @pyramid0_result: Detection results for pyramid level 0.
> + * @pyramid1_result: Detection results for pyramid level 1.
> + * @pyramid2_result: Detection results for pyramid level 2.
> + */
> +struct fd_result {
> +	__u16 fd_pyramid0_num;
> +	__u16 fd_pyramid1_num;
> +	__u16 fd_pyramid2_num;
> +	__u16 fd_total_num;

fd_total_num is redundant.
User space program could use (fd_pyramid0_num + fd_pyramid1_num + fd_pyramid2_num) to get this.
So drop this.

> +	struct fd_ret pyramid0_result;
> +	struct fd_ret pyramid1_result;
> +	struct fd_ret pyramid2_result;
> +};
> +
> +/**
> + * struct attr_result - Attribute detection results parameters.
> + *
> + * @gender_ret: Gender detection results.
> + * @ethnicity_ret: Ethnicity detection results.
> + * @merged_age_ret: Merged age detection results.
> + * @merged_gender_ret: Merged gender detection results.
> + * @merged_is_indian_ret: Merged results indicating if the subject is Indian.
> + * @merged_ethnicity_ret: Merged ethnicity detection results.
> + */
> +struct attr_result {
> +	__s16 gender_ret[2][64];

Is the value 0 for woman and 1 for man?
Why the array is [2][64]?
Explain what the first index mean and what the second index mean.
attribute mode has no coordinate information, so we just know how many man and how many woman,
but we don't know which one (the position in video) is man or woman?

> +	__s16 ethnicity_ret[4][64];

0 for Chinese, 1 for Japanese, 2 for Korean?

> +	__s16 merged_age_ret[2];

Why the term 'merged'?

> +	__s16 merged_gender_ret[2];

Ditto.

> +	__s16 merged_is_indian_ret[2];

indian is India people or indigenous people of America or both?

> +	__s16 merged_ethnicity_ret[4];
> +};
> +
> +/**
> + * struct fld_landmark - FLD coordinates parameters.
> + *
> + * @x: X coordinate of the facial landmark.
> + * @y: Y coordinate of the facial landmark.
> + */
> +struct fld_landmark {
> +	__u16 x;
> +	__u16 y;
> +};
> +
> +/**
> + * struct fld_result - FLD detection results parameters.
> + *
> + * @fld_landmark: Array of facial landmarks, each with X and Y coordinates.
> + * @fld_out_rip: Output rotation-invariant pose value.
> + * @fld_out_rop: Output rotation pose value.
> + * @confidence: Confidence score of the facial landmark detection.
> + * @blinkscore: Blink score indicating the likelihood of eye blink.
> + */
> +struct fld_result {
> +	struct fld_landmark fld_landmark[FLD_CUR_LANDMARK];
> +	__u16 fld_out_rip;
> +	__u16 fld_out_rop;
> +	__u16 confidence;
> +	__s16 blinkscore;
> +};
> +
> +/**
> + * struct aie_enq_info - V4L2 Kernelspace parameters.
> + *
> + * @sel_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for current fd.
> + *           FDMODE: Face Detection.
> + *           ATTRIBUTEMODE: Gender and ethnicity detection
> + *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and mouth
> + * @src_img_fmt: source image format.
> + * @src_img_width: the width of the source image.
> + * @src_img_height: the height of the source image.
> + * @src_img_stride: the stride of the source image.
> + * @pyramid_base_width: pyramid is the size of resizer, the width of the base pyramid.
> + * @pyramid_base_height: pyramid is the size of resizer, the width of the base pyramid.
> + * @number_of_pyramid: number of pyramid, min: 1, max: 3.
> + * @rotate_degree: the rotate degree of the image.
> + * @en_roi: enable roi(roi is a box diagram that selects a rectangle in a picture).
> + *          when en_roi is enable, AIE will return a rectangle face detection result
> + * @src_roi: roi params.
> + * @en_padding: enable padding, this is only used on the hardware of yuv to rgb.
> + *              and has noting to do with fd_mode
> + * @src_padding: padding params.
> + * @freq_level: frequency level, Get value from user space enque.
> + * @fld_face_num: the number of faces in fld.
> + *                user space tells driver the number of detections.
> + * @fld_input: fld input params.
> + * @src_img_addr: Source image address.
> + * @src_img_addr_uv: Source image address for UV plane.
> + * @fd_out: Face detection results.
> + * @attr_out: Attribute detection results.
> + * @fld_out: Array of facial landmark detection results for multiple frames.
> + * @irq_status: Interrupt request status.
> + */
> +struct aie_enq_info {
> +	__u32 sel_mode;
> +	__u32 src_img_fmt;
> +	__u32 src_img_width;
> +	__u32 src_img_height;
> +	__u32 src_img_stride;
> +	__u32 pyramid_base_width;
> +	__u32 pyramid_base_height;
> +	__u32 number_of_pyramid;
> +	__u32 rotate_degree;
> +	int en_roi;
> +	struct aie_roi_coordinate src_roi;
> +	int en_padding;
> +	struct aie_padding_size src_padding;
> +	unsigned int freq_level;
> +	unsigned int fld_face_num;
> +	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];

Above information is set by user space, so driver is not necessary to return these information back to user space.
Drop these.

> +	__u32 src_img_addr;
> +	__u32 src_img_addr_uv;

If user space program need to access source image buffer, it should map it itself.
Do not pass this address information from driver.
Drop these.

> +	struct fd_result fd_out;
> +	struct attr_result attr_out;
> +	struct fld_result fld_out[FLD_MAX_FRAME];

Union these three structure because hardware would work in one mode in one time.

> +	__u32 irq_status;

User space program should not process irq_status.
So drop this.

> +};
> +
> +/**
> + * struct v4l2_ctrl_aie_param - V4L2 Userspace parameters.
> + *
> + * @fd_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for current fd.
> + *           FDMODE: Face Detection.
> + *           ATTRIBUTEMODE: Gender and ethnicity detection
> + *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and mouth
> + * @src_img_fmt: source image format.
> + * @src_img_width: the width of the source image.
> + * @src_img_height: the height of the source image.
> + * @src_img_stride: the stride of the source image.
> + * @pyramid_base_width: pyramid is the size of resizer, the width of the base pyramid.
> + * @pyramid_base_height: pyramid is the size of resizer, the width of the base pyramid.
> + * @number_of_pyramid: number of pyramid, min: 1, max: 3.
> + * @rotate_degree: the rotate degree of the image.
> + * @en_roi: enable roi(roi is a box diagram that selects a rectangle in a picture).
> + *          when en_roi is enable, AIE will return a rectangle face detection result
> + * @src_roi: roi params.
> + * @en_padding: enable padding, this is only used on the hardware of yuv to rgb.
> + *              and has noting to do with fd_mode
> + * @src_padding: padding params.
> + * @freq_level: frequency level, Get value from user space enque.
> + * @fld_face_num: the number of faces in fld.
> + *                user space tells driver the number of detections.
> + * @fld_input: fld input params.
> + */
> +struct v4l2_ctrl_aie_param {
> +	__u32 fd_mode;
> +	__u32 src_img_fmt;
> +	__u32 src_img_width;
> +	__u32 src_img_height;
> +	__u32 src_img_stride;

Use V4L2 standard interface to set source image format/width/height/stride.

> +	__u32 pyramid_base_width;
> +	__u32 pyramid_base_height;

Does pyramid width/height has limitation?
If source image resolution is 3840x2160, does pyramid resolution could be 3840x2160?
If there are hardware limitation, query this limitation from driver.

Some AI model just accept some certain resolution, for example 360x360.
In this case, any source resolution should resize to this resolution.
Does AIE need to resize to some fixed resolution? Or any resolution is acceptable?

> +	__u32 number_of_pyramid;

Why need multiple pyramid?
Does this AI model need the face resolution around 100x100?
If a face it 400x400, so it would not be detect so need to resize this face to multiple smaller resolution.
In first pyramid face resolution is 400x400.
In second pyramid face resolution is 200x200.
In third pyramid face resolution is 100x100.
So this face would be detected in third pyramid.

If this is right, add this information to document.
If not, add right information to document.

> +	__u32 rotate_degree;
> +	__s32 en_roi;
> +	struct aie_roi_coordinate src_roi;
> +	__s32 en_padding;

If padding has nothing to do with fd_mode, drop it.

> +	struct aie_padding_size src_padding;
> +	__u32 freq_level;

freq_level is FPS?
What is freq_level and how hardware work with this?
The comment says "Get value from user space enque", what's this?
Describe more detail about this.

> +	__u32 fld_face_num;
> +	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];

Does the fld mode need fd mode result?
The face_num is get from fd mode, and the fld_input coordinate is get from fd mode also.
If so, describe more about this.

Regards,
CK

> +};

> +
> +#endif /* __MTK_AIE_V4L2_CONTROLS_H__ */
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index c8cb2796130f..329bbac9239e 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -858,6 +858,9 @@ struct v4l2_pix_format {
>  #define V4L2_META_FMT_RK_ISP1_STAT_3A	v4l2_fourcc('R', 'K', '1', 'S') /* Rockchip ISP1 3A Statistics */
>  #define V4L2_META_FMT_RK_ISP1_EXT_PARAMS	v4l2_fourcc('R', 'K', '1', 'E') /* Rockchip ISP1 3a Extensible Parameters */
>  
> +/* Vendor-specific definition: used for the MediaTek camera subsystem's face detection results */
> +#define V4L2_META_FMT_MTFD_RESULT	v4l2_fourcc('M', 'T', 'f', 'd')
> +
>  /* Vendor specific - used for RaspberryPi PiSP */
>  #define V4L2_META_FMT_RPI_BE_CFG	v4l2_fourcc('R', 'P', 'B', 'C') /* PiSP BE configuration */
>  #define V4L2_META_FMT_RPI_FE_CFG	v4l2_fourcc('R', 'P', 'F', 'C') /* PiSP FE configuration */
> @@ -1965,6 +1968,9 @@ enum v4l2_ctrl_type {
>  	V4L2_CTRL_TYPE_AV1_TILE_GROUP_ENTRY = 0x281,
>  	V4L2_CTRL_TYPE_AV1_FRAME	    = 0x282,
>  	V4L2_CTRL_TYPE_AV1_FILM_GRAIN	    = 0x283,
> +
> +	V4L2_CTRL_TYPE_AIE_INIT		= 0x0290,
> +	V4L2_CTRL_TYPE_AIE_PARAM	= 0x0291,
>  };
>  
>  /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */

Re: [PATCH v5 3/4] uapi: linux: add MT8188 AIE

[Bo Kong (孔波)]

Hi,CK,
    Thanks for the reviews.

On Mon, 2025-04-07 at 03:57 +0000, CK Hu (胡俊光) wrote:
> On Thu, 2025-04-03 at 15:38 +0800, bo.kong wrote:
> > From: Bo Kong <Bo.Kong@mediatek.com>
> > 
> > Add AIE control related definitions.
> 
> Laurent has asked you to provide document of the UAPI.
> If you have no idea what to write to this document,
> I ask you question in this mail and you write the answer to the
> document.

OK, I will reply with the answer here.
> 
> > 
> > Signed-off-by: Bo Kong <Bo.Kong@mediatek.com>
> > ---
> 
> [snip]
> 
> > diff --git a/include/uapi/linux/mtk_aie_v4l2_controls.h
> > b/include/uapi/linux/mtk_aie_v4l2_controls.h
> > new file mode 100644
> > index 000000000000..952dcdb23283
> > --- /dev/null
> > +++ b/include/uapi/linux/mtk_aie_v4l2_controls.h
> > @@ -0,0 +1,308 @@
> > +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> > +/*
> > + * AIE Controls Header
> > + *
> > + * Copyright (c) 2020 MediaTek Inc.
> > + * Author: Bo Kong <bo.kong@mediatek.com>
> > + */
> > +
> > +#ifndef __MTK_AIE_V4L2_CONTROLS_H__
> > +#define __MTK_AIE_V4L2_CONTROLS_H__
> > +
> > +#include <linux/types.h>
> > +
> > +/*
> > + * The base for the mediatek Face Detection driver controls.
> > + * We reserve 16 controls for this driver.
> > + * Each CID represents different stages of AIE, with different
> > structures and functions
> > + * and cannot be reused
> > + */
> > +#define V4L2_CID_USER_MTK_FD_BASE (V4L2_CID_USER_BASE + 0x1fd0)
> > +#define V4L2_CID_MTK_AIE_INIT (V4L2_CID_USER_MTK_FD_BASE + 1)
> > +#define V4L2_CID_MTK_AIE_PARAM (V4L2_CID_USER_MTK_FD_BASE + 2)
> > +
> > +#define MAX_FACE_NUM			1024
> > +#define FLD_CUR_LANDMARK		11
> > +#define FLD_MAX_FRAME			15
> > +
> > +/**
> > + * struct v4l2_ctrl_aie_init - aie init parameters.
> > + *
> > + * @max_img_width: maximum width of the source image.
> > + * @max_img_height: maximum height of the source image.
> > + * @pyramid_width: maximum width of the base pyramid.
> > + * @pyramid_height: maximum height of the base pyramid.
> > + * @feature_threshold: The threshold for the face
> > confidence.Range: 100 ~ 400.
> > + *                     The larger the value,the lower the face
> > recognition rate
> > + */
> > +struct v4l2_ctrl_aie_init {
> > +	__u32 max_img_width;
> > +	__u32 max_img_height;
> 
> max image width/height is hardware limitation. This should be stored
> in driver.
> User space program should use some V4L2 query interface to get this
> information.

This is the max size of the image sent by the user, not the maximum
size of the hardware. For example, for a 640x480 image, the user needs
to set max_img_width = 640 and max_img_height = 480.

> 
> > +	__u32 pyramid_width;
> > +	__u32 pyramid_height;
> 
> Ditto.
> 
> > +	__s32 feature_threshold;
> 
> How to decide this value?
> I guess there is a tuning process to find a reasonable threshold.
> Is there only one reasonable threshold for all scenario?
> If so, write done this one threshold in driver and user space is not
> necessary to set this value to driver.
> If the threshold would vary for different scenario, for example, 168
> for indoor video and 258 for outdoor video,
> add comment to describe this so user space program have to detect the
> scenario of input video.

This value depends on whether the user prioritizes recognition accuracy
or recognition speed. There is no standard value, as it provides users
with multiple options.

> 
> > +};
> > +
> > +/**
> > + * struct aie_roi_coordinate - aie roi parameters.
> > + *
> > + * @x1: x1 of the roi coordinate.
> > + * @y1: y1 of the roi coordinate.
> > + * @x2: x2 of the roi coordinate.
> > + * @y2: y2 of the roi coordinate.
> > + */
> > +struct aie_roi_coordinate {
> > +	__u32 x1;
> > +	__u32 y1;
> > +	__u32 x2;
> > +	__u32 y2;
> > +};
> > +
> > +/**
> > + * struct aie_padding_size - aie padding parameters.
> > + *
> > + * @left: the size of padding left.
> > + * @right: the size of padding right.
> > + * @down: the size of padding below.
> > + * @up: the size of padding above.
> > + */
> > +struct aie_padding_size {
> > +	__u32 left;
> > +	__u32 right;
> > +	__u32 down;
> > +	__u32 up;
> > +};
> > +
> > +/**
> > + * struct v4l2_fld_crop_rip_rop - aie fld parameters.
> > + *
> > + * @fld_in_crop_x1: x1 of the crop coordinate.
> > + * @fld_in_crop_y1: y1 of the crop coordinate.
> > + * @fld_in_crop_x2: x2 of the crop coordinate.
> > + * @fld_in_crop_y2: y2 of the crop coordinate.
> > + * @fld_in_rip: fld in rip.
> > + * @fld_in_rop: fld in rop.
> > + */
> > +struct v4l2_fld_crop_rip_rop {
> > +	__u32 fld_in_crop_x1;
> > +	__u32 fld_in_crop_y1;
> > +	__u32 fld_in_crop_x2;
> > +	__u32 fld_in_crop_y2;
> > +	__u32 fld_in_rip;
> > +	__u32 fld_in_rop;
> > +};
> > +
> > +/**
> > + * struct fd_ret - aie fd result parameters.
> > + *
> > + * @anchor_x0: X coordinate of the top-left corner of each
> > detected face.
> > + * @anchor_x1: X coordinate of the bottom-right corner of each
> > detected face.
> > + * @anchor_y0: Y coordinate of the top-left corner of each
> > detected face.
> > + * @anchor_y1: Y coordinate of the bottom-right corner of each
> > detected face.
> > + * @rop_landmark_score0: Score for the first rotation pose
> > landmark.
> > + * @rop_landmark_score1: Score for the second rotation pose
> > landmark.
> > + * @rop_landmark_score2: Score for the third rotation pose
> > landmark.
> > + * @anchor_score: Score for the anchor points.
> > + * @rip_landmark_score0: Score for the first rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score1: Score for the second rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score2: Score for the third rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score3: Score for the fourth rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score4: Score for the fifth rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score5: Score for the sixth rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score6: Score for the seventh rotation-invariant
> > pose landmark.
> > + * @face_result_index: Index of each detected face.
> > + * @anchor_index: Index of the anchor points.
> > + * @fd_partial_result: Partial face detection result.
> > + */
> > +struct fd_ret {
> > +	__u16 anchor_x0[MAX_FACE_NUM];
> > +	__u16 anchor_x1[MAX_FACE_NUM];
> > +	__u16 anchor_y0[MAX_FACE_NUM];
> > +	__u16 anchor_y1[MAX_FACE_NUM];
> 
> I don't know why use 'anchor' for face coordinate.
> Maybe this is trivial for AI domain, but I think there should be some
> brief introduction for who don't understand AI.

This naming is based on the hardware specifications. The four variables
othe anchor represent the coordinates of the four corners of the
rectangular box.

> 
> > +	__s16 rop_landmark_score0[MAX_FACE_NUM];
> > +	__s16 rop_landmark_score1[MAX_FACE_NUM];
> > +	__s16 rop_landmark_score2[MAX_FACE_NUM];
> 
> I don't know what is landmark.
> Why there are 'first', 'second', and 'third' landmark?
> Maybe this is trivial for AI domain, but I think there should be some
> brief introduction for who don't understand AI.

rop (Rotation Out of Plane) refers to 3D rotation, which will select the highest scoring face direction among the front face, right profile, and left profile.

> 
> > +	__s16 anchor_score[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score0[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score1[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score2[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score3[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score4[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score5[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score6[MAX_FACE_NUM];
> > +	__u16 face_result_index[MAX_FACE_NUM];
> 
> What is this index?
> If fd_pyramid0_num is 100, so anchor_x0[0] ~ anchor_x0[99] is valid.
> I don't know why need this index? 

RIP (Rotation In Plane) refers to planar rotation, which will determine
the rotation angle by selecting the highest scoring angle among the six
possible face rotation angles.

face_result_index indicates which face is output by the hardware.

> 
> > +	__u16 anchor_index[MAX_FACE_NUM];
> 
> What is this index?

The meaning of anchor_index is which anchor detected it.

> 
> > +	__u32 fd_partial_result;
> 
> What is this result?
> Describe more so that everyone could understand this.

fd_partial_result indicates the number of faces detected in three
different resized images (large, medium, and small) by the face
detection (FD) process.

> 
> > +};
> 
> It's better that one face information is placed together in DRAM
> because it's easy to cache hit.
> Then this structure would reform as:
> 
> struct face {
> 	__u16 anchor_x0;
> 	__u16 anchor_x1;
> 	__u16 anchor_y0;
> 	__u16 anchor_y1;
> ...
> 	__u16 anchor_index;
> ;
> 
> struct fd_ret {
> 	struct face face_result[MAX_FACE_NUM];
> 	__u32 fd_partial_result;
> };
> 
> > +
> > +/**
> > + * struct fd_result - Face detection results for different pyramid
> > levels.
> > + *
> > + * @fd_pyramid0_num: Number of faces detected at pyramid level 0.
> > + * @fd_pyramid1_num: Number of faces detected at pyramid level 1.
> > + * @fd_pyramid2_num: Number of faces detected at pyramid level 2.
> > + * @fd_total_num: Total number of faces detected across all
> > pyramid levels.
> > + * @pyramid0_result: Detection results for pyramid level 0.
> > + * @pyramid1_result: Detection results for pyramid level 1.
> > + * @pyramid2_result: Detection results for pyramid level 2.
> > + */
> > +struct fd_result {
> > +	__u16 fd_pyramid0_num;
> > +	__u16 fd_pyramid1_num;
> > +	__u16 fd_pyramid2_num;
> > +	__u16 fd_total_num;
> 
> fd_total_num is redundant.
> User space program could use (fd_pyramid0_num + fd_pyramid1_num +
> fd_pyramid2_num) to get this.
> So drop this.

fd_total_num represents the final number of faces detected by the
hardware. fd_pyramind0, fd_pyramind1, and fd_pyramind2 are the numbers
of faces detected in the resized images (large, medium, and small)
respectively. These are different variables and fd_total_num is not
obtained by summing fd_pyramind0, fd_pyramind1, and fd_pyramind2.

> 
> > +	struct fd_ret pyramid0_result;
> > +	struct fd_ret pyramid1_result;
> > +	struct fd_ret pyramid2_result;
> > +};
> > +
> > +/**
> > + * struct attr_result - Attribute detection results parameters.
> > + *
> > + * @gender_ret: Gender detection results.
> > + * @ethnicity_ret: Ethnicity detection results.
> > + * @merged_age_ret: Merged age detection results.
> > + * @merged_gender_ret: Merged gender detection results.
> > + * @merged_is_indian_ret: Merged results indicating if the subject
> > is Indian.
> > + * @merged_ethnicity_ret: Merged ethnicity detection results.
> > + */
> > +struct attr_result {
> > +	__s16 gender_ret[2][64];
> 
> Is the value 0 for woman and 1 for man?
> Why the array is [2][64]?
> Explain what the first index mean and what the second index mean.
> attribute mode has no coordinate information, so we just know how
> many man and how many woman,
> but we don't know which one (the position in video) is man or woman?
> 

0:male, 1:female

> > +	__s16 ethnicity_ret[4][64];
> 
> 0 for while, 1 for black, 2 for asian?

0: while, 1:black, 2:asian, 3:indian

> 
> > +	__s16 merged_age_ret[2];
> 
> Why the term 'merged'?
> 

This is just naming

> > +	__s16 merged_gender_ret[2];
> 
> Ditto.
> 
> > +	__s16 merged_is_indian_ret[2];
> 
> indian is India people or indigenous people of America or both?
> 

indian is India people

> > +	__s16 merged_ethnicity_ret[4];
> > +};
> > +
> > +/**
> > + * struct fld_landmark - FLD coordinates parameters.
> > + *
> > + * @x: X coordinate of the facial landmark.
> > + * @y: Y coordinate of the facial landmark.
> > + */
> > +struct fld_landmark {
> > +	__u16 x;
> > +	__u16 y;
> > +};
> > +
> > +/**
> > + * struct fld_result - FLD detection results parameters.
> > + *
> > + * @fld_landmark: Array of facial landmarks, each with X and Y
> > coordinates.
> > + * @fld_out_rip: Output rotation-invariant pose value.
> > + * @fld_out_rop: Output rotation pose value.
> > + * @confidence: Confidence score of the facial landmark detection.
> > + * @blinkscore: Blink score indicating the likelihood of eye
> > blink.
> > + */
> > +struct fld_result {
> > +	struct fld_landmark fld_landmark[FLD_CUR_LANDMARK];
> > +	__u16 fld_out_rip;
> > +	__u16 fld_out_rop;
> > +	__u16 confidence;
> > +	__s16 blinkscore;
> > +};
> > +
> > +/**
> > + * struct aie_enq_info - V4L2 Kernelspace parameters.
> > + *
> > + * @sel_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for
> > current fd.
> > + *           FDMODE: Face Detection.
> > + *           ATTRIBUTEMODE: Gender and ethnicity detection
> > + *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and
> > mouth
> > + * @src_img_fmt: source image format.
> > + * @src_img_width: the width of the source image.
> > + * @src_img_height: the height of the source image.
> > + * @src_img_stride: the stride of the source image.
> > + * @pyramid_base_width: pyramid is the size of resizer, the width
> > of the base pyramid.
> > + * @pyramid_base_height: pyramid is the size of resizer, the width
> > of the base pyramid.
> > + * @number_of_pyramid: number of pyramid, min: 1, max: 3.
> > + * @rotate_degree: the rotate degree of the image.
> > + * @en_roi: enable roi(roi is a box diagram that selects a
> > rectangle in a picture).
> > + *          when en_roi is enable, AIE will return a rectangle
> > face detection result
> > + * @src_roi: roi params.
> > + * @en_padding: enable padding, this is only used on the hardware
> > of yuv to rgb.
> > + *              and has noting to do with fd_mode
> > + * @src_padding: padding params.
> > + * @freq_level: frequency level, Get value from user space enque.
> > + * @fld_face_num: the number of faces in fld.
> > + *                user space tells driver the number of
> > detections.
> > + * @fld_input: fld input params.
> > + * @src_img_addr: Source image address.
> > + * @src_img_addr_uv: Source image address for UV plane.
> > + * @fd_out: Face detection results.
> > + * @attr_out: Attribute detection results.
> > + * @fld_out: Array of facial landmark detection results for
> > multiple frames.
> > + * @irq_status: Interrupt request status.
> > + */
> > +struct aie_enq_info {
> > +	__u32 sel_mode;
> > +	__u32 src_img_fmt;
> > +	__u32 src_img_width;
> > +	__u32 src_img_height;
> > +	__u32 src_img_stride;
> > +	__u32 pyramid_base_width;
> > +	__u32 pyramid_base_height;
> > +	__u32 number_of_pyramid;
> > +	__u32 rotate_degree;
> > +	int en_roi;
> > +	struct aie_roi_coordinate src_roi;
> > +	int en_padding;
> > +	struct aie_padding_size src_padding;
> > +	unsigned int freq_level;
> > +	unsigned int fld_face_num;
> > +	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];
> 
> Above information is set by user space, so driver is not necessary to
> return these information back to user space.
> Drop these.
> 

This is the V4L2 enqueue structure, which requires information sent
from user space. It cannot be dropped; otherwise, the FLD input will
not receive data from the user.

> > +	__u32 src_img_addr;
> > +	__u32 src_img_addr_uv;
> 
> If user space program need to access source image buffer, it should
> map it itself.
> Do not pass this address information from driver.
> Drop these.
> 

This is where the user provides the addresses of the Y and UV
components of the image for the AIE to use.

> > +	struct fd_result fd_out;
> > +	struct attr_result attr_out;
> > +	struct fld_result fld_out[FLD_MAX_FRAME];
> 
> Union these three structure because hardware would work in one mode
> in one time.
> 
> > +	__u32 irq_status;
> 
> User space program should not process irq_status.
> So drop this.
> 

The irq status is provided for users to check the current status of the
AIE. Users need to use it to monitor the AIE status in order to perform
some custom operations in advance.

> > +};
> > +
> > +/**
> > + * struct v4l2_ctrl_aie_param - V4L2 Userspace parameters.
> > + *
> > + * @fd_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for
> > current fd.
> > + *           FDMODE: Face Detection.
> > + *           ATTRIBUTEMODE: Gender and ethnicity detection
> > + *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and
> > mouth
> > + * @src_img_fmt: source image format.
> > + * @src_img_width: the width of the source image.
> > + * @src_img_height: the height of the source image.
> > + * @src_img_stride: the stride of the source image.
> > + * @pyramid_base_width: pyramid is the size of resizer, the width
> > of the base pyramid.
> > + * @pyramid_base_height: pyramid is the size of resizer, the width
> > of the base pyramid.
> > + * @number_of_pyramid: number of pyramid, min: 1, max: 3.
> > + * @rotate_degree: the rotate degree of the image.
> > + * @en_roi: enable roi(roi is a box diagram that selects a
> > rectangle in a picture).
> > + *          when en_roi is enable, AIE will return a rectangle
> > face detection result
> > + * @src_roi: roi params.
> > + * @en_padding: enable padding, this is only used on the hardware
> > of yuv to rgb.
> > + *              and has noting to do with fd_mode
> > + * @src_padding: padding params.
> > + * @freq_level: frequency level, Get value from user space enque.
> > + * @fld_face_num: the number of faces in fld.
> > + *                user space tells driver the number of
> > detections.
> > + * @fld_input: fld input params.
> > + */
> > +struct v4l2_ctrl_aie_param {
> > +	__u32 fd_mode;
> > +	__u32 src_img_fmt;
> > +	__u32 src_img_width;
> > +	__u32 src_img_height;
> > +	__u32 src_img_stride;
> 
> Use V4L2 standard interface to set source image
> format/width/height/stride.
> 

This structure is used to obtain data sent by the user through s_ctrl.
Users only need to set it up once, without repeatedly calling multiple
IOCTLs to set width, height, and format. This approach can reduce
system overhead.

> > +	__u32 pyramid_base_width;
> > +	__u32 pyramid_base_height;
> 
> Does pyramid width/height has limitation?
> If source image resolution is 3840x2160, does pyramid resolution
> could be 3840x2160?
> If there are hardware limitation, query this limitation from driver.
> 
> Some AI model just accept some certain resolution, for example
> 360x360.
> In this case, any source resolution should resize to this resolution.
> Does AIE need to resize to some fixed resolution? Or any resolution
> is acceptable?
> 

The AIE only supports a maximum source image size of 640x480.
Similarly, the pyramid width and height are also 640x480.

> > +	__u32 number_of_pyramid;
> 
> Why need multiple pyramid?
> Does this AI model need the face resolution around 100x100?
> If a face it 400x400, so it would not be detect so need to resize
> this face to multiple smaller resolution.
> In first pyramid face resolution is 400x400.
> In second pyramid face resolution is 200x200.
> In third pyramid face resolution is 100x100.
> So this face would be detected in third pyramid.
> 
> If this is right, add this information to document.
> If not, add right information to document.
> 

You are correct.The AIE hardware needs to downscale the source image
twice to obtain three images. It then performs face detection on each
of these three images. This process is designed to improve the
recognition rate and speed of the AIE.

such as source image:640x480
Pyramid0: 480x460, Detect small face
Pyramid1:0.5x, 240x180
Pyramid2:0.25x, 120x90, Detect large face

> > +	__u32 rotate_degree;
> > +	__s32 en_roi;
> > +	struct aie_roi_coordinate src_roi;
> > +	__s32 en_padding;
> 
> If padding has nothing to do with fd_mode, drop it.
> 

Padding is used to determine whether additional areas outside the
detected face should be included. Whether to enable it depends on the
user.

> > +	struct aie_padding_size src_padding;
> > +	__u32 freq_level;
> 
> freq_level is FPS?
> What is freq_level and how hardware work with this?
> The comment says "Get value from user space enque", what's this?
> Describe more detail about this.
> 

The freq_level is no longer in use, I will drop it

> > +	__u32 fld_face_num;
> > +	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];
> 
> Does the fld mode need fd mode result?
> The face_num is get from fd mode, and the fld_input coordinate is get
> from fd mode also.
> If so, describe more about this.
> 

FLD is using detected face window information and head pose detected by
AIE, to perform Binary Tree Traversal to approximate the final landmark
coordination. FLD is using the AIE detection result, FLD and AIE won’t
be operating at the same time. Therefore, FLD can share AIE’s DMAs and
SRAM

> Regards,
> CK
> 
> > +};
> > +
> > +#endif /* __MTK_AIE_V4L2_CONTROLS_H__ */
> > diff --git a/include/uapi/linux/videodev2.h
> > b/include/uapi/linux/videodev2.h
> > index c8cb2796130f..329bbac9239e 100644
> > --- a/include/uapi/linux/videodev2.h
> > +++ b/include/uapi/linux/videodev2.h
> > @@ -858,6 +858,9 @@ struct v4l2_pix_format {
> >  #define V4L2_META_FMT_RK_ISP1_STAT_3A	v4l2_fourcc('R', 'K',
> > '1', 'S') /* Rockchip ISP1 3A Statistics */
> >  #define V4L2_META_FMT_RK_ISP1_EXT_PARAMS	v4l2_fourcc('R', 'K',
> > '1', 'E') /* Rockchip ISP1 3a Extensible Parameters */
> >  
> > +/* Vendor-specific definition: used for the MediaTek camera
> > subsystem's face detection results */
> > +#define V4L2_META_FMT_MTFD_RESULT	v4l2_fourcc('M', 'T', 'f', 'd')
> > +
> >  /* Vendor specific - used for RaspberryPi PiSP */
> >  #define V4L2_META_FMT_RPI_BE_CFG	v4l2_fourcc('R', 'P', 'B', 'C')
> > /* PiSP BE configuration */
> >  #define V4L2_META_FMT_RPI_FE_CFG	v4l2_fourcc('R', 'P', 'F', 'C')
> > /* PiSP FE configuration */
> > @@ -1965,6 +1968,9 @@ enum v4l2_ctrl_type {
> >  	V4L2_CTRL_TYPE_AV1_TILE_GROUP_ENTRY = 0x281,
> >  	V4L2_CTRL_TYPE_AV1_FRAME	    = 0x282,
> >  	V4L2_CTRL_TYPE_AV1_FILM_GRAIN	    = 0x283,
> > +
> > +	V4L2_CTRL_TYPE_AIE_INIT		= 0x0290,
> > +	V4L2_CTRL_TYPE_AIE_PARAM	= 0x0291,
> >  };
> >  
> >  /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
> 
> 

Re: [PATCH v5 3/4] uapi: linux: add MT8188 AIE

[CK Hu (胡俊光)]

On Wed, 2025-04-23 at 04:02 +0000, Bo Kong (孔波) wrote:
> Hi,CK,
>     Thanks for the reviews.
> 
> On Mon, 2025-04-07 at 03:57 +0000, CK Hu (胡俊光) wrote:
> > On Thu, 2025-04-03 at 15:38 +0800, bo.kong wrote:
> > > From: Bo Kong <Bo.Kong@mediatek.com>
> > > 
> > > Add AIE control related definitions.
> > 
> > Laurent has asked you to provide document of the UAPI.
> > If you have no idea what to write to this document,
> > I ask you question in this mail and you write the answer to the
> > document.
> 
> OK, I will reply with the answer here.
> > 
> > > 
> > > Signed-off-by: Bo Kong <Bo.Kong@mediatek.com>
> > > ---
> > 
> > [snip]
> > 
> > > diff --git a/include/uapi/linux/mtk_aie_v4l2_controls.h
> > > b/include/uapi/linux/mtk_aie_v4l2_controls.h
> > > new file mode 100644
> > > index 000000000000..952dcdb23283
> > > --- /dev/null
> > > +++ b/include/uapi/linux/mtk_aie_v4l2_controls.h
> > > @@ -0,0 +1,308 @@
> > > +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> > > +/*
> > > + * AIE Controls Header
> > > + *
> > > + * Copyright (c) 2020 MediaTek Inc.
> > > + * Author: Bo Kong <bo.kong@mediatek.com>
> > > + */
> > > +
> > > +#ifndef __MTK_AIE_V4L2_CONTROLS_H__
> > > +#define __MTK_AIE_V4L2_CONTROLS_H__
> > > +
> > > +#include <linux/types.h>
> > > +
> > > +/*
> > > + * The base for the mediatek Face Detection driver controls.
> > > + * We reserve 16 controls for this driver.
> > > + * Each CID represents different stages of AIE, with different
> > > structures and functions
> > > + * and cannot be reused
> > > + */
> > > +#define V4L2_CID_USER_MTK_FD_BASE (V4L2_CID_USER_BASE + 0x1fd0)
> > > +#define V4L2_CID_MTK_AIE_INIT (V4L2_CID_USER_MTK_FD_BASE + 1)
> > > +#define V4L2_CID_MTK_AIE_PARAM (V4L2_CID_USER_MTK_FD_BASE + 2)
> > > +
> > > +#define MAX_FACE_NUM			1024
> > > +#define FLD_CUR_LANDMARK		11
> > > +#define FLD_MAX_FRAME			15
> > > +
> > > +/**
> > > + * struct v4l2_ctrl_aie_init - aie init parameters.
> > > + *
> > > + * @max_img_width: maximum width of the source image.
> > > + * @max_img_height: maximum height of the source image.
> > > + * @pyramid_width: maximum width of the base pyramid.
> > > + * @pyramid_height: maximum height of the base pyramid.
> > > + * @feature_threshold: The threshold for the face
> > > confidence.Range: 100 ~ 400.
> > > + *                     The larger the value,the lower the face
> > > recognition rate
> > > + */
> > > +struct v4l2_ctrl_aie_init {
> > > +	__u32 max_img_width;
> > > +	__u32 max_img_height;
> > 
> > max image width/height is hardware limitation. This should be stored
> > in driver.
> > User space program should use some V4L2 query interface to get this
> > information.
> 
> This is the max size of the image sent by the user, not the maximum
> size of the hardware. For example, for a 640x480 image, the user needs
> to set max_img_width = 640 and max_img_height = 480.

I trace the driver and find out that max_img_width and max_img_height are used for pure software checking.
This checking could be done by user space program.
When user space program receive a new input image, it could check its resolution before send it to driver.
Checking earlier is better, so it's not necessary pass max_img_width and max_img_height to driver.

> 
> > 
> > > +	__u32 pyramid_width;
> > > +	__u32 pyramid_height;
> > 
> > Ditto.
> > 
> > > +	__s32 feature_threshold;
> > 
> > How to decide this value?
> > I guess there is a tuning process to find a reasonable threshold.
> > Is there only one reasonable threshold for all scenario?
> > If so, write done this one threshold in driver and user space is not
> > necessary to set this value to driver.
> > If the threshold would vary for different scenario, for example, 168
> > for indoor video and 258 for outdoor video,
> > add comment to describe this so user space program have to detect the
> > scenario of input video.
> 
> This value depends on whether the user prioritizes recognition accuracy
> or recognition speed. There is no standard value, as it provides users
> with multiple options.

So, 2147483647 would have best accuracy and lowest speed, -2147483648 would have worst accuracy and highest speed,
and 0 is a balance of accuracy and speed.
If so, add this to document.

> 
> > 
> > > +};
> > > +
> > > +/**
> > > + * struct aie_roi_coordinate - aie roi parameters.
> > > + *
> > > + * @x1: x1 of the roi coordinate.
> > > + * @y1: y1 of the roi coordinate.
> > > + * @x2: x2 of the roi coordinate.
> > > + * @y2: y2 of the roi coordinate.
> > > + */
> > > +struct aie_roi_coordinate {
> > > +	__u32 x1;
> > > +	__u32 y1;
> > > +	__u32 x2;
> > > +	__u32 y2;
> > > +};
> > > +
> > > +/**
> > > + * struct aie_padding_size - aie padding parameters.
> > > + *
> > > + * @left: the size of padding left.
> > > + * @right: the size of padding right.
> > > + * @down: the size of padding below.
> > > + * @up: the size of padding above.
> > > + */
> > > +struct aie_padding_size {
> > > +	__u32 left;
> > > +	__u32 right;
> > > +	__u32 down;
> > > +	__u32 up;
> > > +};
> > > +
> > > +/**
> > > + * struct v4l2_fld_crop_rip_rop - aie fld parameters.
> > > + *
> > > + * @fld_in_crop_x1: x1 of the crop coordinate.
> > > + * @fld_in_crop_y1: y1 of the crop coordinate.
> > > + * @fld_in_crop_x2: x2 of the crop coordinate.
> > > + * @fld_in_crop_y2: y2 of the crop coordinate.
> > > + * @fld_in_rip: fld in rip.
> > > + * @fld_in_rop: fld in rop.
> > > + */
> > > +struct v4l2_fld_crop_rip_rop {
> > > +	__u32 fld_in_crop_x1;
> > > +	__u32 fld_in_crop_y1;
> > > +	__u32 fld_in_crop_x2;
> > > +	__u32 fld_in_crop_y2;
> > > +	__u32 fld_in_rip;
> > > +	__u32 fld_in_rop;
> > > +};
> > > +
> > > +/**
> > > + * struct fd_ret - aie fd result parameters.
> > > + *
> > > + * @anchor_x0: X coordinate of the top-left corner of each
> > > detected face.
> > > + * @anchor_x1: X coordinate of the bottom-right corner of each
> > > detected face.
> > > + * @anchor_y0: Y coordinate of the top-left corner of each
> > > detected face.
> > > + * @anchor_y1: Y coordinate of the bottom-right corner of each
> > > detected face.
> > > + * @rop_landmark_score0: Score for the first rotation pose
> > > landmark.
> > > + * @rop_landmark_score1: Score for the second rotation pose
> > > landmark.
> > > + * @rop_landmark_score2: Score for the third rotation pose
> > > landmark.
> > > + * @anchor_score: Score for the anchor points.
> > > + * @rip_landmark_score0: Score for the first rotation-invariant
> > > pose landmark.
> > > + * @rip_landmark_score1: Score for the second rotation-invariant
> > > pose landmark.
> > > + * @rip_landmark_score2: Score for the third rotation-invariant
> > > pose landmark.
> > > + * @rip_landmark_score3: Score for the fourth rotation-invariant
> > > pose landmark.
> > > + * @rip_landmark_score4: Score for the fifth rotation-invariant
> > > pose landmark.
> > > + * @rip_landmark_score5: Score for the sixth rotation-invariant
> > > pose landmark.
> > > + * @rip_landmark_score6: Score for the seventh rotation-invariant
> > > pose landmark.
> > > + * @face_result_index: Index of each detected face.
> > > + * @anchor_index: Index of the anchor points.
> > > + * @fd_partial_result: Partial face detection result.
> > > + */
> > > +struct fd_ret {
> > > +	__u16 anchor_x0[MAX_FACE_NUM];
> > > +	__u16 anchor_x1[MAX_FACE_NUM];
> > > +	__u16 anchor_y0[MAX_FACE_NUM];
> > > +	__u16 anchor_y1[MAX_FACE_NUM];
> > 
> > I don't know why use 'anchor' for face coordinate.
> > Maybe this is trivial for AI domain, but I think there should be some
> > brief introduction for who don't understand AI.
> 
> This naming is based on the hardware specifications. The four variables
> othe anchor represent the coordinates of the four corners of the
> rectangular box.
> 
> > 
> > > +	__s16 rop_landmark_score0[MAX_FACE_NUM];
> > > +	__s16 rop_landmark_score1[MAX_FACE_NUM];
> > > +	__s16 rop_landmark_score2[MAX_FACE_NUM];
> > 
> > I don't know what is landmark.
> > Why there are 'first', 'second', and 'third' landmark?
> > Maybe this is trivial for AI domain, but I think there should be some
> > brief introduction for who don't understand AI.
> 
> rop (Rotation Out of Plane) refers to 3D rotation, which will select the highest scoring face direction among the front face, right profile, and left profile.
> 
> > 
> > > +	__s16 anchor_score[MAX_FACE_NUM];
> > > +	__s16 rip_landmark_score0[MAX_FACE_NUM];
> > > +	__s16 rip_landmark_score1[MAX_FACE_NUM];
> > > +	__s16 rip_landmark_score2[MAX_FACE_NUM];
> > > +	__s16 rip_landmark_score3[MAX_FACE_NUM];
> > > +	__s16 rip_landmark_score4[MAX_FACE_NUM];
> > > +	__s16 rip_landmark_score5[MAX_FACE_NUM];
> > > +	__s16 rip_landmark_score6[MAX_FACE_NUM];
> > > +	__u16 face_result_index[MAX_FACE_NUM];
> > 
> > What is this index?
> > If fd_pyramid0_num is 100, so anchor_x0[0] ~ anchor_x0[99] is valid.
> > I don't know why need this index? 
> 
> RIP (Rotation In Plane) refers to planar rotation, which will determine
> the rotation angle by selecting the highest scoring angle among the six
> possible face rotation angles.

Even though user space know ROP and RIP, what could it do by using this score?
This looks like a temporary information to detect face.
If hardware has already detection the position of a face, what we could do by using these rotation information?

> 
> face_result_index indicates which face is output by the hardware.

If 

face_result_index[0] = 0
face_result_index[1] = 1
face_result_index[2] = 0
face_result_index[3] = 1

Does this mean that face 0 and face 2 is not a face, and face 1 and face 3 is face?

> 
> > 
> > > +	__u16 anchor_index[MAX_FACE_NUM];
> > 
> > What is this index?
> 
> The meaning of anchor_index is which anchor detected it.

This is the came as ROP and RIP.
What could user space program do by using this information?

> 
> > 
> > > +	__u32 fd_partial_result;
> > 
> > What is this result?
> > Describe more so that everyone could understand this.
> 
> fd_partial_result indicates the number of faces detected in three
> different resized images (large, medium, and small) by the face
> detection (FD) process.

This is identical to fd_pyramidX_num (X = 0, 1, 2) in struct fd_result,
and this naming does not show the 'number of faces',
so remove this.

> 
> > 
> > > +};
> > 
> > It's better that one face information is placed together in DRAM
> > because it's easy to cache hit.
> > Then this structure would reform as:
> > 
> > struct face {
> > 	__u16 anchor_x0;
> > 	__u16 anchor_x1;
> > 	__u16 anchor_y0;
> > 	__u16 anchor_y1;
> > ...
> > 	__u16 anchor_index;
> > ;
> > 
> > struct fd_ret {
> > 	struct face face_result[MAX_FACE_NUM];
> > 	__u32 fd_partial_result;
> > };
> > 
> > > +
> > > +/**
> > > + * struct fd_result - Face detection results for different pyramid
> > > levels.
> > > + *
> > > + * @fd_pyramid0_num: Number of faces detected at pyramid level 0.
> > > + * @fd_pyramid1_num: Number of faces detected at pyramid level 1.
> > > + * @fd_pyramid2_num: Number of faces detected at pyramid level 2.
> > > + * @fd_total_num: Total number of faces detected across all
> > > pyramid levels.
> > > + * @pyramid0_result: Detection results for pyramid level 0.
> > > + * @pyramid1_result: Detection results for pyramid level 1.
> > > + * @pyramid2_result: Detection results for pyramid level 2.
> > > + */
> > > +struct fd_result {
> > > +	__u16 fd_pyramid0_num;
> > > +	__u16 fd_pyramid1_num;
> > > +	__u16 fd_pyramid2_num;
> > > +	__u16 fd_total_num;
> > 
> > fd_total_num is redundant.
> > User space program could use (fd_pyramid0_num + fd_pyramid1_num +
> > fd_pyramid2_num) to get this.
> > So drop this.
> 
> fd_total_num represents the final number of faces detected by the
> hardware. fd_pyramind0, fd_pyramind1, and fd_pyramind2 are the numbers
> of faces detected in the resized images (large, medium, and small)
> respectively. These are different variables and fd_total_num is not
> obtained by summing fd_pyramind0, fd_pyramind1, and fd_pyramind2.

How to use fd_total_num?
If

fd_pyramid0_num = 5
fd_pyramid1_num = 4
fd_pyramid2_num = 6
fd_total_num = 12

We could find 5 face coordinate in pyramid0_result;
We could find 4 face coordinate in pyramid1_result;
We could find 6 face coordinate in pyramid2_result;

How do we find 12 face coordinate of fd_total_num?
We have no any information of these 12 faces.

> 
> > 
> > > +	struct fd_ret pyramid0_result;
> > > +	struct fd_ret pyramid1_result;
> > > +	struct fd_ret pyramid2_result;
> > > +};
> > > +
> > > +/**
> > > + * struct attr_result - Attribute detection results parameters.
> > > + *
> > > + * @gender_ret: Gender detection results.
> > > + * @ethnicity_ret: Ethnicity detection results.
> > > + * @merged_age_ret: Merged age detection results.
> > > + * @merged_gender_ret: Merged gender detection results.
> > > + * @merged_is_indian_ret: Merged results indicating if the subject
> > > is Indian.
> > > + * @merged_ethnicity_ret: Merged ethnicity detection results.
> > > + */
> > > +struct attr_result {
> > > +	__s16 gender_ret[2][64];
> > 
> > Is the value 0 for woman and 1 for man?
> > Why the array is [2][64]?
> > Explain what the first index mean and what the second index mean.
> > attribute mode has no coordinate information, so we just know how
> > many man and how many woman,
> > but we don't know which one (the position in video) is man or woman?
> > 
> 
> 0:male, 1:female

You forgot to answer what does the array index mean.
Or you just want to answer in document.

> 
> > > +	__s16 ethnicity_ret[4][64];
> > 
> > 0 for while, 1 for black, 2 for asian?
> 
> 0: while, 1:black, 2:asian, 3:indian

When add this information to document,

3: India people

> 
> > 
> > > +	__s16 merged_age_ret[2];
> > 
> > Why the term 'merged'?
> > 
> 
> This is just naming

If 'merged' has no any meaning, remove this prefix.

> 
> > > +	__s16 merged_gender_ret[2];
> > 
> > Ditto.
> > 
> > > +	__s16 merged_is_indian_ret[2];
> > 
> > indian is India people or indigenous people of America or both?
> > 
> 
> indian is India people
> 
> > > +	__s16 merged_ethnicity_ret[4];
> > > +};
> > > +
> > > +/**
> > > + * struct fld_landmark - FLD coordinates parameters.
> > > + *
> > > + * @x: X coordinate of the facial landmark.
> > > + * @y: Y coordinate of the facial landmark.
> > > + */
> > > +struct fld_landmark {
> > > +	__u16 x;
> > > +	__u16 y;
> > > +};
> > > +
> > > +/**
> > > + * struct fld_result - FLD detection results parameters.
> > > + *
> > > + * @fld_landmark: Array of facial landmarks, each with X and Y
> > > coordinates.
> > > + * @fld_out_rip: Output rotation-invariant pose value.
> > > + * @fld_out_rop: Output rotation pose value.
> > > + * @confidence: Confidence score of the facial landmark detection.
> > > + * @blinkscore: Blink score indicating the likelihood of eye
> > > blink.
> > > + */
> > > +struct fld_result {
> > > +	struct fld_landmark fld_landmark[FLD_CUR_LANDMARK];
> > > +	__u16 fld_out_rip;
> > > +	__u16 fld_out_rop;
> > > +	__u16 confidence;
> > > +	__s16 blinkscore;
> > > +};
> > > +
> > > +/**
> > > + * struct aie_enq_info - V4L2 Kernelspace parameters.
> > > + *
> > > + * @sel_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for
> > > current fd.
> > > + *           FDMODE: Face Detection.
> > > + *           ATTRIBUTEMODE: Gender and ethnicity detection
> > > + *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and
> > > mouth
> > > + * @src_img_fmt: source image format.
> > > + * @src_img_width: the width of the source image.
> > > + * @src_img_height: the height of the source image.
> > > + * @src_img_stride: the stride of the source image.
> > > + * @pyramid_base_width: pyramid is the size of resizer, the width
> > > of the base pyramid.
> > > + * @pyramid_base_height: pyramid is the size of resizer, the width
> > > of the base pyramid.
> > > + * @number_of_pyramid: number of pyramid, min: 1, max: 3.
> > > + * @rotate_degree: the rotate degree of the image.
> > > + * @en_roi: enable roi(roi is a box diagram that selects a
> > > rectangle in a picture).
> > > + *          when en_roi is enable, AIE will return a rectangle
> > > face detection result
> > > + * @src_roi: roi params.
> > > + * @en_padding: enable padding, this is only used on the hardware
> > > of yuv to rgb.
> > > + *              and has noting to do with fd_mode
> > > + * @src_padding: padding params.
> > > + * @freq_level: frequency level, Get value from user space enque.
> > > + * @fld_face_num: the number of faces in fld.
> > > + *                user space tells driver the number of
> > > detections.
> > > + * @fld_input: fld input params.
> > > + * @src_img_addr: Source image address.
> > > + * @src_img_addr_uv: Source image address for UV plane.
> > > + * @fd_out: Face detection results.
> > > + * @attr_out: Attribute detection results.
> > > + * @fld_out: Array of facial landmark detection results for
> > > multiple frames.
> > > + * @irq_status: Interrupt request status.
> > > + */
> > > +struct aie_enq_info {
> > > +	__u32 sel_mode;
> > > +	__u32 src_img_fmt;
> > > +	__u32 src_img_width;
> > > +	__u32 src_img_height;
> > > +	__u32 src_img_stride;
> > > +	__u32 pyramid_base_width;
> > > +	__u32 pyramid_base_height;
> > > +	__u32 number_of_pyramid;
> > > +	__u32 rotate_degree;
> > > +	int en_roi;
> > > +	struct aie_roi_coordinate src_roi;
> > > +	int en_padding;
> > > +	struct aie_padding_size src_padding;
> > > +	unsigned int freq_level;
> > > +	unsigned int fld_face_num;
> > > +	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];
> > 
> > Above information is set by user space, so driver is not necessary to
> > return these information back to user space.
> > Drop these.
> > 
> 
> This is the V4L2 enqueue structure, which requires information sent
> from user space. It cannot be dropped; otherwise, the FLD input will
> not receive data from the user.
> 
> > > +	__u32 src_img_addr;
> > > +	__u32 src_img_addr_uv;
> > 
> > If user space program need to access source image buffer, it should
> > map it itself.
> > Do not pass this address information from driver.
> > Drop these.
> > 
> 
> This is where the user provides the addresses of the Y and UV
> components of the image for the AIE to use.

No, src_img_addr and src_img_addr_uv is not provided by user.
In driver, mtk_aie_job_ready(),

       src_img[0].dma_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);

       if (ctx->src_fmt.num_planes == 2) {
                 src_img[1].dma_addr =
                          vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 1);
       }

       if ((fd->aie_cfg->sel_mode == FDMODE || fd->aie_cfg->sel_mode == ATTRIBUTEMODE) &&
           fd->aie_cfg->src_img_fmt == FMT_YUV420_1P) {
                 src_img[1].dma_addr = src_img[0].dma_addr + ctx->user_param.src_img_stride *
                          ctx->user_param.src_img_height;
       }

       fd->aie_cfg->src_img_addr = src_img[0].dma_addr;
       fd->aie_cfg->src_img_addr_uv = src_img[1].dma_addr;

Driver would get these address itself.
It's impossible for user space program to provide these address.
So drop src_img_addr and src_img_addr_uv from the user space interface.

> 
> > > +	struct fd_result fd_out;
> > > +	struct attr_result attr_out;
> > > +	struct fld_result fld_out[FLD_MAX_FRAME];
> > 
> > Union these three structure because hardware would work in one mode
> > in one time.
> > 
> > > +	__u32 irq_status;
> > 
> > User space program should not process irq_status.
> > So drop this.
> > 
> 
> The irq status is provided for users to check the current status of the
> AIE. Users need to use it to monitor the AIE status in order to perform
> some custom operations in advance.

It's not a good idea to expose hardware information to user space.
In new SoC, irq_status may have different definition and this interface would vary by SoC.
It's better to define a type which is not direct hardware information.
For example

enum AIE_STATUS {
	AIE_SUCCESS,
	AIE_ERR_XXX,
	AIE_ERR_YYY,
	AIE_ERR_ZZZ,
};

I'm curious what user space program could do when AIE driver has error?
If user space program just do nothing, I think it's not necessary to return AIE_STATUS, and just return FD, ATTR, FLD with no data.
When user space get no data, it would also do nothing.

> 
> > > +};
> > > +
> > > +/**
> > > + * struct v4l2_ctrl_aie_param - V4L2 Userspace parameters.
> > > + *
> > > + * @fd_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for
> > > current fd.
> > > + *           FDMODE: Face Detection.
> > > + *           ATTRIBUTEMODE: Gender and ethnicity detection
> > > + *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and
> > > mouth
> > > + * @src_img_fmt: source image format.
> > > + * @src_img_width: the width of the source image.
> > > + * @src_img_height: the height of the source image.
> > > + * @src_img_stride: the stride of the source image.
> > > + * @pyramid_base_width: pyramid is the size of resizer, the width
> > > of the base pyramid.
> > > + * @pyramid_base_height: pyramid is the size of resizer, the width
> > > of the base pyramid.
> > > + * @number_of_pyramid: number of pyramid, min: 1, max: 3.
> > > + * @rotate_degree: the rotate degree of the image.
> > > + * @en_roi: enable roi(roi is a box diagram that selects a
> > > rectangle in a picture).
> > > + *          when en_roi is enable, AIE will return a rectangle
> > > face detection result
> > > + * @src_roi: roi params.
> > > + * @en_padding: enable padding, this is only used on the hardware
> > > of yuv to rgb.
> > > + *              and has noting to do with fd_mode
> > > + * @src_padding: padding params.
> > > + * @freq_level: frequency level, Get value from user space enque.
> > > + * @fld_face_num: the number of faces in fld.
> > > + *                user space tells driver the number of
> > > detections.
> > > + * @fld_input: fld input params.
> > > + */
> > > +struct v4l2_ctrl_aie_param {
> > > +	__u32 fd_mode;
> > > +	__u32 src_img_fmt;
> > > +	__u32 src_img_width;
> > > +	__u32 src_img_height;
> > > +	__u32 src_img_stride;
> > 
> > Use V4L2 standard interface to set source image
> > format/width/height/stride.
> > 
> 
> This structure is used to obtain data sent by the user through s_ctrl.
> Users only need to set it up once, without repeatedly calling multiple
> IOCTLs to set width, height, and format. This approach can reduce
> system overhead.
> 
> > > +	__u32 pyramid_base_width;
> > > +	__u32 pyramid_base_height;
> > 
> > Does pyramid width/height has limitation?
> > If source image resolution is 3840x2160, does pyramid resolution
> > could be 3840x2160?
> > If there are hardware limitation, query this limitation from driver.
> > 
> > Some AI model just accept some certain resolution, for example
> > 360x360.
> > In this case, any source resolution should resize to this resolution.
> > Does AIE need to resize to some fixed resolution? Or any resolution
> > is acceptable?
> > 
> 
> The AIE only supports a maximum source image size of 640x480.
> Similarly, the pyramid width and height are also 640x480.
> 
> > > +	__u32 number_of_pyramid;
> > 
> > Why need multiple pyramid?
> > Does this AI model need the face resolution around 100x100?
> > If a face it 400x400, so it would not be detect so need to resize
> > this face to multiple smaller resolution.
> > In first pyramid face resolution is 400x400.
> > In second pyramid face resolution is 200x200.
> > In third pyramid face resolution is 100x100.
> > So this face would be detected in third pyramid.
> > 
> > If this is right, add this information to document.
> > If not, add right information to document.
> > 
> 
> You are correct.The AIE hardware needs to downscale the source image
> twice to obtain three images. It then performs face detection on each
> of these three images. This process is designed to improve the
> recognition rate and speed of the AIE.
> 
> such as source image:640x480
> Pyramid0: 480x460, Detect small face
> Pyramid1:0.5x, 240x180
> Pyramid2:0.25x, 120x90, Detect large face
> 
> > > +	__u32 rotate_degree;
> > > +	__s32 en_roi;
> > > +	struct aie_roi_coordinate src_roi;
> > > +	__s32 en_padding;
> > 
> > If padding has nothing to do with fd_mode, drop it.
> > 
> 
> Padding is used to determine whether additional areas outside the
> detected face should be included. Whether to enable it depends on the
> user.

I trace the driver, and find that padding is just to enlarge source roi.
You could enlarge source roi in user space program in advance.
So padding is redundant.
Drop padding interface.

> 
> > > +	struct aie_padding_size src_padding;
> > > +	__u32 freq_level;
> > 
> > freq_level is FPS?
> > What is freq_level and how hardware work with this?
> > The comment says "Get value from user space enque", what's this?
> > Describe more detail about this.
> > 
> 
> The freq_level is no longer in use, I will drop it
> 
> > > +	__u32 fld_face_num;
> > > +	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];
> > 
> > Does the fld mode need fd mode result?
> > The face_num is get from fd mode, and the fld_input coordinate is get
> > from fd mode also.
> > If so, describe more about this.
> > 
> 
> FLD is using detected face window information and head pose detected by
> AIE, to perform Binary Tree Traversal to approximate the final landmark
> coordination. FLD is using the AIE detection result, FLD and AIE won’t
> be operating at the same time. Therefore, FLD can share AIE’s DMAs and
> SRAM

Provide a sample code to show how to use it.

Regards,
CK

> 
> > Regards,
> > CK
> > 
> > > +};
> > > +
> > > +#endif /* __MTK_AIE_V4L2_CONTROLS_H__ */
> > > diff --git a/include/uapi/linux/videodev2.h
> > > b/include/uapi/linux/videodev2.h
> > > index c8cb2796130f..329bbac9239e 100644
> > > --- a/include/uapi/linux/videodev2.h
> > > +++ b/include/uapi/linux/videodev2.h
> > > @@ -858,6 +858,9 @@ struct v4l2_pix_format {
> > >  #define V4L2_META_FMT_RK_ISP1_STAT_3A	v4l2_fourcc('R', 'K',
> > > '1', 'S') /* Rockchip ISP1 3A Statistics */
> > >  #define V4L2_META_FMT_RK_ISP1_EXT_PARAMS	v4l2_fourcc('R', 'K',
> > > '1', 'E') /* Rockchip ISP1 3a Extensible Parameters */
> > >  
> > > +/* Vendor-specific definition: used for the MediaTek camera
> > > subsystem's face detection results */
> > > +#define V4L2_META_FMT_MTFD_RESULT	v4l2_fourcc('M', 'T', 'f', 'd')
> > > +
> > >  /* Vendor specific - used for RaspberryPi PiSP */
> > >  #define V4L2_META_FMT_RPI_BE_CFG	v4l2_fourcc('R', 'P', 'B', 'C')
> > > /* PiSP BE configuration */
> > >  #define V4L2_META_FMT_RPI_FE_CFG	v4l2_fourcc('R', 'P', 'F', 'C')
> > > /* PiSP FE configuration */
> > > @@ -1965,6 +1968,9 @@ enum v4l2_ctrl_type {
> > >  	V4L2_CTRL_TYPE_AV1_TILE_GROUP_ENTRY = 0x281,
> > >  	V4L2_CTRL_TYPE_AV1_FRAME	    = 0x282,
> > >  	V4L2_CTRL_TYPE_AV1_FILM_GRAIN	    = 0x283,
> > > +
> > > +	V4L2_CTRL_TYPE_AIE_INIT		= 0x0290,
> > > +	V4L2_CTRL_TYPE_AIE_PARAM	= 0x0291,
> > >  };
> > >  
> > >  /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
> > 
> > 
> 
> 

Re: [PATCH v5 3/4] uapi: linux: add MT8188 AIE

[CK Hu (胡俊光)]

On Wed, 2025-04-23 at 04:02 +0000, Bo Kong (孔波) wrote:
> Hi,CK,
>     Thanks for the reviews.
> 
> 
> > > +/**
> > > + * struct aie_enq_info - V4L2 Kernelspace parameters.
> > > + *
> > > + * @sel_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for
> > > current fd.
> > > + *           FDMODE: Face Detection.
> > > + *           ATTRIBUTEMODE: Gender and ethnicity detection
> > > + *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and
> > > mouth
> > > + * @src_img_fmt: source image format.
> > > + * @src_img_width: the width of the source image.
> > > + * @src_img_height: the height of the source image.
> > > + * @src_img_stride: the stride of the source image.
> > > + * @pyramid_base_width: pyramid is the size of resizer, the width
> > > of the base pyramid.
> > > + * @pyramid_base_height: pyramid is the size of resizer, the width
> > > of the base pyramid.
> > > + * @number_of_pyramid: number of pyramid, min: 1, max: 3.
> > > + * @rotate_degree: the rotate degree of the image.
> > > + * @en_roi: enable roi(roi is a box diagram that selects a
> > > rectangle in a picture).
> > > + *          when en_roi is enable, AIE will return a rectangle
> > > face detection result
> > > + * @src_roi: roi params.
> > > + * @en_padding: enable padding, this is only used on the hardware
> > > of yuv to rgb.
> > > + *              and has noting to do with fd_mode
> > > + * @src_padding: padding params.
> > > + * @freq_level: frequency level, Get value from user space enque.
> > > + * @fld_face_num: the number of faces in fld.
> > > + *                user space tells driver the number of
> > > detections.
> > > + * @fld_input: fld input params.
> > > + * @src_img_addr: Source image address.
> > > + * @src_img_addr_uv: Source image address for UV plane.
> > > + * @fd_out: Face detection results.
> > > + * @attr_out: Attribute detection results.
> > > + * @fld_out: Array of facial landmark detection results for
> > > multiple frames.
> > > + * @irq_status: Interrupt request status.
> > > + */
> > > +struct aie_enq_info {
> > > +	__u32 sel_mode;
> > > +	__u32 src_img_fmt;
> > > +	__u32 src_img_width;
> > > +	__u32 src_img_height;
> > > +	__u32 src_img_stride;
> > > +	__u32 pyramid_base_width;
> > > +	__u32 pyramid_base_height;
> > > +	__u32 number_of_pyramid;
> > > +	__u32 rotate_degree;
> > > +	int en_roi;
> > > +	struct aie_roi_coordinate src_roi;
> > > +	int en_padding;
> > > +	struct aie_padding_size src_padding;
> > > +	unsigned int freq_level;
> > > +	unsigned int fld_face_num;
> > > +	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];
> > 
> > Above information is set by user space, so driver is not necessary to
> > return these information back to user space.
> > Drop these.
> > 
> 
> This is the V4L2 enqueue structure, which requires information sent
> from user space. It cannot be dropped; otherwise, the FLD input will
> not receive data from the user.

In struct v4l2_ctrl_aie_param, you have already define these parameter,
so it's not necessary to set these parameter by two interface to driver.
So drop these.

Regards,
CK

> 
> > > +	__u32 src_img_addr;
> > > +	__u32 src_img_addr_uv;
> > 
> > If user space program need to access source image buffer, it should
> > map it itself.
> > Do not pass this address information from driver.
> > Drop these.
> > 
> 
> This is where the user provides the addresses of the Y and UV
> components of the image for the AIE to use.
> 
> > > +	struct fd_result fd_out;
> > > +	struct attr_result attr_out;
> > > +	struct fld_result fld_out[FLD_MAX_FRAME];
> > 
> > Union these three structure because hardware would work in one mode
> > in one time.
> > 
> > > +	__u32 irq_status;
> > 
> > User space program should not process irq_status.
> > So drop this.
> > 
> 
> The irq status is provided for users to check the current status of the
> AIE. Users need to use it to monitor the AIE status in order to perform
> some custom operations in advance.
> 
> > > +};
> > > +

[PATCH v5 3/4] uapi: linux: add MT8188 AIE

[Bo Kong (孔波)]

Hi,CK,
    Thanks for the reviews. It seems the previous email wasn't updated
to patchwork, so I'm resending it here.

On Mon, 2025-04-07 at 03:57 +0000, CK Hu (胡俊光) wrote:
> On Thu, 2025-04-03 at 15:38 +0800, bo.kong wrote:
> > From: Bo Kong <Bo.Kong@mediatek.com>
> > 
> > Add AIE control related definitions.
> 
> Laurent has asked you to provide document of the UAPI.
> If you have no idea what to write to this document,
> I ask you question in this mail and you write the answer to the
> document.

OK, I will reply with the answer here.
> 
> > 
> > Signed-off-by: Bo Kong <Bo.Kong@mediatek.com>
> > ---
> 
> [snip]
> 
> > diff --git a/include/uapi/linux/mtk_aie_v4l2_controls.h
> > b/include/uapi/linux/mtk_aie_v4l2_controls.h
> > new file mode 100644
> > index 000000000000..952dcdb23283
> > --- /dev/null
> > +++ b/include/uapi/linux/mtk_aie_v4l2_controls.h
> > @@ -0,0 +1,308 @@
> > +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> > +/*
> > + * AIE Controls Header
> > + *
> > + * Copyright (c) 2020 MediaTek Inc.
> > + * Author: Bo Kong <bo.kong@mediatek.com>
> > + */
> > +
> > +#ifndef __MTK_AIE_V4L2_CONTROLS_H__
> > +#define __MTK_AIE_V4L2_CONTROLS_H__
> > +
> > +#include <linux/types.h>
> > +
> > +/*
> > + * The base for the mediatek Face Detection driver controls.
> > + * We reserve 16 controls for this driver.
> > + * Each CID represents different stages of AIE, with different
> > structures and functions
> > + * and cannot be reused
> > + */
> > +#define V4L2_CID_USER_MTK_FD_BASE (V4L2_CID_USER_BASE + 0x1fd0)
> > +#define V4L2_CID_MTK_AIE_INIT (V4L2_CID_USER_MTK_FD_BASE + 1)
> > +#define V4L2_CID_MTK_AIE_PARAM (V4L2_CID_USER_MTK_FD_BASE + 2)
> > +
> > +#define MAX_FACE_NUM			1024
> > +#define FLD_CUR_LANDMARK		11
> > +#define FLD_MAX_FRAME			15
> > +
> > +/**
> > + * struct v4l2_ctrl_aie_init - aie init parameters.
> > + *
> > + * @max_img_width: maximum width of the source image.
> > + * @max_img_height: maximum height of the source image.
> > + * @pyramid_width: maximum width of the base pyramid.
> > + * @pyramid_height: maximum height of the base pyramid.
> > + * @feature_threshold: The threshold for the face
> > confidence.Range: 100 ~ 400.
> > + *                     The larger the value,the lower the face
> > recognition rate
> > + */
> > +struct v4l2_ctrl_aie_init {
> > +	__u32 max_img_width;
> > +	__u32 max_img_height;
> 
> max image width/height is hardware limitation. This should be stored
> in driver.
> User space program should use some V4L2 query interface to get this
> information.

This is the max size of the image sent by the user, not the maximum
size of the hardware. For example, for a 640x480 image, the user needs
to set max_img_width = 640 and max_img_height = 480.

> 
> > +	__u32 pyramid_width;
> > +	__u32 pyramid_height;
> 
> Ditto.
> 
> > +	__s32 feature_threshold;
> 
> How to decide this value?
> I guess there is a tuning process to find a reasonable threshold.
> Is there only one reasonable threshold for all scenario?
> If so, write done this one threshold in driver and user space is not
> necessary to set this value to driver.
> If the threshold would vary for different scenario, for example, 168
> for indoor video and 258 for outdoor video,
> add comment to describe this so user space program have to detect the
> scenario of input video.

This value depends on whether the user prioritizes recognition accuracy
or recognition speed. There is no standard value, as it provides users
with multiple options.

> 
> > +};
> > +
> > +/**
> > + * struct aie_roi_coordinate - aie roi parameters.
> > + *
> > + * @x1: x1 of the roi coordinate.
> > + * @y1: y1 of the roi coordinate.
> > + * @x2: x2 of the roi coordinate.
> > + * @y2: y2 of the roi coordinate.
> > + */
> > +struct aie_roi_coordinate {
> > +	__u32 x1;
> > +	__u32 y1;
> > +	__u32 x2;
> > +	__u32 y2;
> > +};
> > +
> > +/**
> > + * struct aie_padding_size - aie padding parameters.
> > + *
> > + * @left: the size of padding left.
> > + * @right: the size of padding right.
> > + * @down: the size of padding below.
> > + * @up: the size of padding above.
> > + */
> > +struct aie_padding_size {
> > +	__u32 left;
> > +	__u32 right;
> > +	__u32 down;
> > +	__u32 up;
> > +};
> > +
> > +/**
> > + * struct v4l2_fld_crop_rip_rop - aie fld parameters.
> > + *
> > + * @fld_in_crop_x1: x1 of the crop coordinate.
> > + * @fld_in_crop_y1: y1 of the crop coordinate.
> > + * @fld_in_crop_x2: x2 of the crop coordinate.
> > + * @fld_in_crop_y2: y2 of the crop coordinate.
> > + * @fld_in_rip: fld in rip.
> > + * @fld_in_rop: fld in rop.
> > + */
> > +struct v4l2_fld_crop_rip_rop {
> > +	__u32 fld_in_crop_x1;
> > +	__u32 fld_in_crop_y1;
> > +	__u32 fld_in_crop_x2;
> > +	__u32 fld_in_crop_y2;
> > +	__u32 fld_in_rip;
> > +	__u32 fld_in_rop;
> > +};
> > +
> > +/**
> > + * struct fd_ret - aie fd result parameters.
> > + *
> > + * @anchor_x0: X coordinate of the top-left corner of each
> > detected face.
> > + * @anchor_x1: X coordinate of the bottom-right corner of each
> > detected face.
> > + * @anchor_y0: Y coordinate of the top-left corner of each
> > detected face.
> > + * @anchor_y1: Y coordinate of the bottom-right corner of each
> > detected face.
> > + * @rop_landmark_score0: Score for the first rotation pose
> > landmark.
> > + * @rop_landmark_score1: Score for the second rotation pose
> > landmark.
> > + * @rop_landmark_score2: Score for the third rotation pose
> > landmark.
> > + * @anchor_score: Score for the anchor points.
> > + * @rip_landmark_score0: Score for the first rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score1: Score for the second rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score2: Score for the third rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score3: Score for the fourth rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score4: Score for the fifth rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score5: Score for the sixth rotation-invariant
> > pose landmark.
> > + * @rip_landmark_score6: Score for the seventh rotation-invariant
> > pose landmark.
> > + * @face_result_index: Index of each detected face.
> > + * @anchor_index: Index of the anchor points.
> > + * @fd_partial_result: Partial face detection result.
> > + */
> > +struct fd_ret {
> > +	__u16 anchor_x0[MAX_FACE_NUM];
> > +	__u16 anchor_x1[MAX_FACE_NUM];
> > +	__u16 anchor_y0[MAX_FACE_NUM];
> > +	__u16 anchor_y1[MAX_FACE_NUM];
> 
> I don't know why use 'anchor' for face coordinate.
> Maybe this is trivial for AI domain, but I think there should be some
> brief introduction for who don't understand AI.

This naming is based on the hardware specifications. The four
variables othe anchor represent the coordinates of the four corners of
the rectangular box.

> 
> > +	__s16 rop_landmark_score0[MAX_FACE_NUM];
> > +	__s16 rop_landmark_score1[MAX_FACE_NUM];
> > +	__s16 rop_landmark_score2[MAX_FACE_NUM];
> 
> I don't know what is landmark.
> Why there are 'first', 'second', and 'third' landmark?
> Maybe this is trivial for AI domain, but I think there should be some
> brief introduction for who don't understand AI.

rop (Rotation Out of Plane) refers to 3D rotation, which will select
the highest scoring face direction among the front face, right profile, and left profile.

> 
> > +	__s16 anchor_score[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score0[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score1[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score2[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score3[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score4[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score5[MAX_FACE_NUM];
> > +	__s16 rip_landmark_score6[MAX_FACE_NUM];
> > +	__u16 face_result_index[MAX_FACE_NUM];
> 
> What is this index?
> If fd_pyramid0_num is 100, so anchor_x0[0] ~ anchor_x0[99] is valid.
> I don't know why need this index? 

RIP (Rotation In Plane) refers to planar rotation, which will determine
the rotation angle by selecting the highest scoring angle among the six
possible face rotation angles.

> 
> > +	__u16 anchor_index[MAX_FACE_NUM];
> 
> What is this index?
> 

The meaning of anchor_index is which anchor detected it.

> > +	__u32 fd_partial_result;
> 
> What is this result?
> Describe more so that everyone could understand this.
> 

fd_partial_result indicates the number of faces detected in three
different resized images (large, medium, and small) by the face
detection (FD) process.

> > +};
> 
> It's better that one face information is placed together in DRAM
> because it's easy to cache hit.
> Then this structure would reform as:
> 
> struct face {
> 	__u16 anchor_x0;
> 	__u16 anchor_x1;
> 	__u16 anchor_y0;
> 	__u16 anchor_y1;
> ...
> 	__u16 anchor_index;
> ;
> 
> struct fd_ret {
> 	struct face face_result[MAX_FACE_NUM];
> 	__u32 fd_partial_result;
> };
> 
> > +
> > +/**
> > + * struct fd_result - Face detection results for different pyramid
> > levels.
> > + *
> > + * @fd_pyramid0_num: Number of faces detected at pyramid level 0.
> > + * @fd_pyramid1_num: Number of faces detected at pyramid level 1.
> > + * @fd_pyramid2_num: Number of faces detected at pyramid level 2.
> > + * @fd_total_num: Total number of faces detected across all
> > pyramid levels.
> > + * @pyramid0_result: Detection results for pyramid level 0.
> > + * @pyramid1_result: Detection results for pyramid level 1.
> > + * @pyramid2_result: Detection results for pyramid level 2.
> > + */
> > +struct fd_result {
> > +	__u16 fd_pyramid0_num;
> > +	__u16 fd_pyramid1_num;
> > +	__u16 fd_pyramid2_num;
> > +	__u16 fd_total_num;
> 
> fd_total_num is redundant.
> User space program could use (fd_pyramid0_num + fd_pyramid1_num +
> fd_pyramid2_num) to get this.
> So drop this.
> 

fd_total_num represents the final number of faces detected by the
hardware. fd_pyramind0, fd_pyramind1, and fd_pyramind2 are the numbers
of faces detected in the resized images (large, medium, and small)
respectively. These are different variables and fd_total_num is not
obtained by summing fd_pyramind0, fd_pyramind1, and fd_pyramind2.

> > +	struct fd_ret pyramid0_result;
> > +	struct fd_ret pyramid1_result;
> > +	struct fd_ret pyramid2_result;
> > +};
> > +
> > +/**
> > + * struct attr_result - Attribute detection results parameters.
> > + *
> > + * @gender_ret: Gender detection results.
> > + * @ethnicity_ret: Ethnicity detection results.
> > + * @merged_age_ret: Merged age detection results.
> > + * @merged_gender_ret: Merged gender detection results.
> > + * @merged_is_indian_ret: Merged results indicating if the subject
> > is Indian.
> > + * @merged_ethnicity_ret: Merged ethnicity detection results.
> > + */
> > +struct attr_result {
> > +	__s16 gender_ret[2][64];
> 
> Is the value 0 for woman and 1 for man?
> Why the array is [2][64]?
> Explain what the first index mean and what the second index mean.
> attribute mode has no coordinate information, so we just know how
> many man and how many woman,
> but we don't know which one (the position in video) is man or woman?
> 

0:male, 1:female

> > +	__s16 ethnicity_ret[4][64];
> 
> 0 for Chinese, 1 for Japanese, 2 for Korean?
> 

0: while, 1:black, 2:asian, 3:indian

> > +	__s16 merged_age_ret[2];
> 
> Why the term 'merged'?
> 
> > +	__s16 merged_gender_ret[2];
> 
> Ditto.
> 
> > +	__s16 merged_is_indian_ret[2];
> 
> indian is India people or indigenous people of America or both?
> 

indian is India people

> > +	__s16 merged_ethnicity_ret[4];
> > +};
> > +
> > +/**
> > + * struct fld_landmark - FLD coordinates parameters.
> > + *
> > + * @x: X coordinate of the facial landmark.
> > + * @y: Y coordinate of the facial landmark.
> > + */
> > +struct fld_landmark {
> > +	__u16 x;
> > +	__u16 y;
> > +};
> > +
> > +/**
> > + * struct fld_result - FLD detection results parameters.
> > + *
> > + * @fld_landmark: Array of facial landmarks, each with X and Y
> > coordinates.
> > + * @fld_out_rip: Output rotation-invariant pose value.
> > + * @fld_out_rop: Output rotation pose value.
> > + * @confidence: Confidence score of the facial landmark detection.
> > + * @blinkscore: Blink score indicating the likelihood of eye
> > blink.
> > + */
> > +struct fld_result {
> > +	struct fld_landmark fld_landmark[FLD_CUR_LANDMARK];
> > +	__u16 fld_out_rip;
> > +	__u16 fld_out_rop;
> > +	__u16 confidence;
> > +	__s16 blinkscore;
> > +};
> > +
> > +/**
> > + * struct aie_enq_info - V4L2 Kernelspace parameters.
> > + *
> > + * @sel_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for
> > current fd.
> > + *           FDMODE: Face Detection.
> > + *           ATTRIBUTEMODE: Gender and ethnicity detection
> > + *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and
> > mouth
> > + * @src_img_fmt: source image format.
> > + * @src_img_width: the width of the source image.
> > + * @src_img_height: the height of the source image.
> > + * @src_img_stride: the stride of the source image.
> > + * @pyramid_base_width: pyramid is the size of resizer, the width
> > of the base pyramid.
> > + * @pyramid_base_height: pyramid is the size of resizer, the width
> > of the base pyramid.
> > + * @number_of_pyramid: number of pyramid, min: 1, max: 3.
> > + * @rotate_degree: the rotate degree of the image.
> > + * @en_roi: enable roi(roi is a box diagram that selects a
> > rectangle in a picture).
> > + *          when en_roi is enable, AIE will return a rectangle
> > face detection result
> > + * @src_roi: roi params.
> > + * @en_padding: enable padding, this is only used on the hardware
> > of yuv to rgb.
> > + *              and has noting to do with fd_mode
> > + * @src_padding: padding params.
> > + * @freq_level: frequency level, Get value from user space enque.
> > + * @fld_face_num: the number of faces in fld.
> > + *                user space tells driver the number of
> > detections.
> > + * @fld_input: fld input params.
> > + * @src_img_addr: Source image address.
> > + * @src_img_addr_uv: Source image address for UV plane.
> > + * @fd_out: Face detection results.
> > + * @attr_out: Attribute detection results.
> > + * @fld_out: Array of facial landmark detection results for
> > multiple frames.
> > + * @irq_status: Interrupt request status.
> > + */
> > +struct aie_enq_info {
> > +	__u32 sel_mode;
> > +	__u32 src_img_fmt;
> > +	__u32 src_img_width;
> > +	__u32 src_img_height;
> > +	__u32 src_img_stride;
> > +	__u32 pyramid_base_width;
> > +	__u32 pyramid_base_height;
> > +	__u32 number_of_pyramid;
> > +	__u32 rotate_degree;
> > +	int en_roi;
> > +	struct aie_roi_coordinate src_roi;
> > +	int en_padding;
> > +	struct aie_padding_size src_padding;
> > +	unsigned int freq_level;
> > +	unsigned int fld_face_num;
> > +	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];
> 
> Above information is set by user space, so driver is not necessary to
> return these information back to user space.
> Drop these.
> 

This is the V4L2 enqueue structure, which requires information sent
from user space. It cannot be dropped; otherwise, the FLD input will
not receive data from the user.

> > +	__u32 src_img_addr;
> > +	__u32 src_img_addr_uv;
> 
> If user space program need to access source image buffer, it should
> map it itself.
> Do not pass this address information from driver.
> Drop these.
> 

This is where the user provides the addresses of the Y and UV
components of the image for the AIE to use.

> > +	struct fd_result fd_out;
> > +	struct attr_result attr_out;
> > +	struct fld_result fld_out[FLD_MAX_FRAME];
> 
> Union these three structure because hardware would work in one mode
> in one time.
> 
> > +	__u32 irq_status;
> 
> User space program should not process irq_status.
> So drop this.
> 

The irq status is provided for users to check the current status of the
AIE. Users need to use it to monitor the AIE status in order to perform
some custom operations in advance.

> > +};
> > +
> > +/**
> > + * struct v4l2_ctrl_aie_param - V4L2 Userspace parameters.
> > + *
> > + * @fd_mode: select a mode(FDMODE, ATTRIBUTEMODE, FLDMODE) for
> > current fd.
> > + *           FDMODE: Face Detection.
> > + *           ATTRIBUTEMODE: Gender and ethnicity detection
> > + *           FLDMODE: Locations of eyebrows, eyes, ears, nose,and
> > mouth
> > + * @src_img_fmt: source image format.
> > + * @src_img_width: the width of the source image.
> > + * @src_img_height: the height of the source image.
> > + * @src_img_stride: the stride of the source image.
> > + * @pyramid_base_width: pyramid is the size of resizer, the width
> > of the base pyramid.
> > + * @pyramid_base_height: pyramid is the size of resizer, the width
> > of the base pyramid.
> > + * @number_of_pyramid: number of pyramid, min: 1, max: 3.
> > + * @rotate_degree: the rotate degree of the image.
> > + * @en_roi: enable roi(roi is a box diagram that selects a
> > rectangle in a picture).
> > + *          when en_roi is enable, AIE will return a rectangle
> > face detection result
> > + * @src_roi: roi params.
> > + * @en_padding: enable padding, this is only used on the hardware
> > of yuv to rgb.
> > + *              and has noting to do with fd_mode
> > + * @src_padding: padding params.
> > + * @freq_level: frequency level, Get value from user space enque.
> > + * @fld_face_num: the number of faces in fld.
> > + *                user space tells driver the number of
> > detections.
> > + * @fld_input: fld input params.
> > + */
> > +struct v4l2_ctrl_aie_param {
> > +	__u32 fd_mode;
> > +	__u32 src_img_fmt;
> > +	__u32 src_img_width;
> > +	__u32 src_img_height;
> > +	__u32 src_img_stride;
> 
> Use V4L2 standard interface to set source image
> format/width/height/stride.
> 

This structure is used to obtain data sent by the user through s_ctrl.
Users only need to set it up once, without repeatedly calling multiple
IOCTLs to set width, height, and format. This approach can reduce
system overhead.

> > +	__u32 pyramid_base_width;
> > +	__u32 pyramid_base_height;
> 
> Does pyramid width/height has limitation?
> If source image resolution is 3840x2160, does pyramid resolution
> could be 3840x2160?
> If there are hardware limitation, query this limitation from driver.
> 
> Some AI model just accept some certain resolution, for example
> 360x360.
> In this case, any source resolution should resize to this resolution.
> Does AIE need to resize to some fixed resolution? Or any resolution
> is acceptable?
> 

The AIE only supports a maximum source image size of 640x480.
Similarly, the pyramid width and height are also 640x480.

> > +	__u32 number_of_pyramid;
> 
> Why need multiple pyramid?
> Does this AI model need the face resolution around 100x100?
> If a face it 400x400, so it would not be detect so need to resize
> this face to multiple smaller resolution.
> In first pyramid face resolution is 400x400.
> In second pyramid face resolution is 200x200.
> In third pyramid face resolution is 100x100.
> So this face would be detected in third pyramid.
> 
> If this is right, add this information to document.
> If not, add right information to document.
> 

You are correct.The AIE hardware needs to downscale the source image
twice to obtain three images. It then performs face detection on each
of these three images. This process is designed to improve the
recognition rate and speed of the AIE.

such as source image:640x480
Pyramid0: 480x460, Detect small face
Pyramid1:0.5x, 240x180
Pyramid2:0.25x, 120x90, Detect large face

> > +	__u32 rotate_degree;
> > +	__s32 en_roi;
> > +	struct aie_roi_coordinate src_roi;
> > +	__s32 en_padding;
> 
> If padding has nothing to do with fd_mode, drop it.
> 

Padding is used to determine whether additional areas outside the
detected face should be included. Whether to enable it depends on the
user.

> > +	struct aie_padding_size src_padding;
> > +	__u32 freq_level;
> 
> freq_level is FPS?
> What is freq_level and how hardware work with this?
> The comment says "Get value from user space enque", what's this?
> Describe more detail about this.
> 

The freq_level is no longer in use, I will drop it

> > +	__u32 fld_face_num;
> > +	struct v4l2_fld_crop_rip_rop fld_input[FLD_MAX_FRAME];
> 
> Does the fld mode need fd mode result?
> The face_num is get from fd mode, and the fld_input coordinate is get
> from fd mode also.
> If so, describe more about this.
> 

FLD is using detected face window information and head pose detected by
AIE, to perform Binary Tree Traversal to approximate the final landmark
coordination. FLD is using the AIE detection result, FLD and AIE won’t
be operating at the same time. Therefore, FLD can share AIE’s DMAs and
SRAM

> Regards,
> CK
> 
> > +};
> > +
> > +#endif /* __MTK_AIE_V4L2_CONTROLS_H__ */
> > diff --git a/include/uapi/linux/videodev2.h
> > b/include/uapi/linux/videodev2.h
> > index c8cb2796130f..329bbac9239e 100644
> > --- a/include/uapi/linux/videodev2.h
> > +++ b/include/uapi/linux/videodev2.h
> > @@ -858,6 +858,9 @@ struct v4l2_pix_format {
> >  #define V4L2_META_FMT_RK_ISP1_STAT_3A	v4l2_fourcc('R', 'K',
> > '1', 'S') /* Rockchip ISP1 3A Statistics */
> >  #define V4L2_META_FMT_RK_ISP1_EXT_PARAMS	v4l2_fourcc('R', 'K',
> > '1', 'E') /* Rockchip ISP1 3a Extensible Parameters */
> >  
> > +/* Vendor-specific definition: used for the MediaTek camera
> > subsystem's face detection results */
> > +#define V4L2_META_FMT_MTFD_RESULT	v4l2_fourcc('M', 'T', 'f', 'd')
> > +
> >  /* Vendor specific - used for RaspberryPi PiSP */
> >  #define V4L2_META_FMT_RPI_BE_CFG	v4l2_fourcc('R', 'P', 'B', 'C')
> > /* PiSP BE configuration */
> >  #define V4L2_META_FMT_RPI_FE_CFG	v4l2_fourcc('R', 'P', 'F', 'C')
> > /* PiSP FE configuration */
> > @@ -1965,6 +1968,9 @@ enum v4l2_ctrl_type {
> >  	V4L2_CTRL_TYPE_AV1_TILE_GROUP_ENTRY = 0x281,
> >  	V4L2_CTRL_TYPE_AV1_FRAME	    = 0x282,
> >  	V4L2_CTRL_TYPE_AV1_FILM_GRAIN	    = 0x283,
> > +
> > +	V4L2_CTRL_TYPE_AIE_INIT		= 0x0290,
> > +	V4L2_CTRL_TYPE_AIE_PARAM	= 0x0291,
> >  };
> >  
> >  /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
> 
> 

Re: [PATCH v5 0/4] Add AIE driver support for mt8188

[Rob Herring (Arm)]

On Thu, 03 Apr 2025 15:38:32 +0800, bo.kong wrote:
> From: Bo Kong <Bo.Kong@mediatek.com>
> 
> AIE(AI Engine) is one of the units in mt8188 ISP which provides hardware accelerated face detection function, it can detect different sizes of faces in a raw image.
> 
> Bo Kong (4):
>   media: dt-bindings: add MT8188 AIE
>   arm64: dts: mt8188: add aie node
>   uapi: linux: add MT8188 AIE
>   media: mediatek: add MT8188 AIE driver
> 
>  .../bindings/media/mediatek,mt8188-aie.yaml   |   78 +
>  arch/arm64/boot/dts/mediatek/mt8188.dtsi      |   33 +
>  drivers/media/platform/mediatek/Kconfig       |    1 +
>  drivers/media/platform/mediatek/Makefile      |    1 +
>  drivers/media/platform/mediatek/aie/Kconfig   |   12 +
>  drivers/media/platform/mediatek/aie/Makefile  |    5 +
>  drivers/media/platform/mediatek/aie/mtk_aie.h |  870 ++++++
>  .../media/platform/mediatek/aie/mtk_aie_drv.c | 2398 +++++++++++++++++
>  .../platform/mediatek/aie/mtk_aie_v4l2.c      | 1295 +++++++++
>  drivers/media/v4l2-core/v4l2-ioctl.c          |    3 +
>  include/uapi/linux/mtk_aie_v4l2_controls.h    |  308 +++
>  include/uapi/linux/videodev2.h                |    6 +
>  12 files changed, 5010 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml
>  create mode 100644 drivers/media/platform/mediatek/aie/Kconfig
>  create mode 100644 drivers/media/platform/mediatek/aie/Makefile
>  create mode 100644 drivers/media/platform/mediatek/aie/mtk_aie.h
>  create mode 100644 drivers/media/platform/mediatek/aie/mtk_aie_drv.c
>  create mode 100644 drivers/media/platform/mediatek/aie/mtk_aie_v4l2.c
>  create mode 100644 include/uapi/linux/mtk_aie_v4l2_controls.h
> 
> --
> 2.45.2
> 
> 
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


This patch series was applied (using b4) to base:
 Base: attempting to guess base-commit...
 Base: tags/next-20250403 (exact match)

If this is not the correct base, please add 'base-commit' tag
(or use b4 which does this automatically)

New warnings running 'make CHECK_DTBS=y for arch/arm64/boot/dts/mediatek/' for 20250403074005.21472-1-bo.kong@mediatek.com:

arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku4.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku4.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8188-geralt-ciri-sku4.dtb] Error 2
arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8370-genio-510-evk.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8370-genio-510-evk.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8370-genio-510-evk.dtb] Error 2
arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8390-genio-700-evk.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8390-genio-700-evk.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8390-genio-700-evk.dtb] Error 2
arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku1.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku1.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8188-geralt-ciri-sku1.dtb] Error 2
arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku7.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku7.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8188-geralt-ciri-sku7.dtb] Error 2
arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku3.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku3.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8188-geralt-ciri-sku3.dtb] Error 2
arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8188-evb.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8188-evb.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8188-evb.dtb] Error 2
arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku6.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku6.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8188-geralt-ciri-sku6.dtb] Error 2
arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku0.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku0.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8188-geralt-ciri-sku0.dtb] Error 2
arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku2.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku2.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8188-geralt-ciri-sku2.dtb] Error 2
arch/arm64/boot/dts/mediatek/mt8188.dtsi:2359.25-2370.5: ERROR (phandle_references): /soc/larb@15340000: Reference to non-existent node or label "smi_img1"
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.dtbs:131: arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku5.dtb] Error 2
make[2]: *** [scripts/Makefile.build:461: arch/arm64/boot/dts/mediatek] Error 2
make[2]: Target 'arch/arm64/boot/dts/mediatek/mt8188-geralt-ciri-sku5.dtb' not remade because of errors.
make[1]: *** [/home/rob/proj/linux-dt-testing/Makefile:1475: mediatek/mt8188-geralt-ciri-sku5.dtb] Error 2
make: *** [Makefile:248: __sub-make] Error 2
make: Target 'mediatek/mt8183-pumpkin.dtb' not remade because of errors.
make: Target 'mediatek/mt6797-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-kodama-sku16.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-fennel14.dtb' not remade because of errors.
make: Target 'mediatek/mt8395-genio-1200-evk.dtb' not remade because of errors.
make: Target 'mediatek/mt7986a-bananapi-bpi-r3.dtb' not remade because of errors.
make: Target 'mediatek/mt8173-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt7986b-rfb.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-willow-sku0.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-tentacruel-sku262144.dtb' not remade because of errors.
make: Target 'mediatek/mt8195-cherry-tomato-r2.dtb' not remade because of errors.
make: Target 'mediatek/mt7981b-openwrt-one.dtb' not remade because of errors.
make: Target 'mediatek/mt8173-elm.dtb' not remade because of errors.
make: Target 'mediatek/mt7622-rfb1.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-fennel-sku1.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-damu.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-willow-sku1.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-tentacool-sku327681.dtb' not remade because of errors.
make: Target 'mediatek/mt6779-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt8188-geralt-ciri-sku4.dtb' not remade because of errors.
make: Target 'mediatek/mt8173-elm-hana-rev7.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-starmie-sku1.dtb' not remade because of errors.
make: Target 'mediatek/mt8370-genio-510-evk.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-kenzo.dtb' not remade because of errors.
make: Target 'mediatek/mt2712-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-tentacool-sku327683.dtb' not remade because of errors.
make: Target 'mediatek/mt7981b-cudy-wr3000-v1.dtb' not remade because of errors.
make: Target 'mediatek/mt8192-asurada-hayato-r1.dtb' not remade because of errors.
make: Target 'mediatek/mt8390-genio-700-evk.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-fennel-sku7.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-makomo-sku1.dtb' not remade because of errors.
make: Target 'mediatek/mt8395-kontron-3-5-sbc-i1200.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-pico6.dtb' not remade because of errors.
make: Target 'mediatek/mt8188-geralt-ciri-sku1.dtb' not remade because of errors.
make: Target 'mediatek/mt8195-demo.dtb' not remade because of errors.
make: Target 'mediatek/mt8173-elm-hana.dtb' not remade because of errors.
make: Target 'mediatek/mt6755-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-chinchou-sku16.dtb' not remade because of errors.
make: Target 'mediatek/mt8192-asurada-spherion-r0.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-chinchou-sku0.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-kodama-sku32.dtb' not remade because of errors.
make: Target 'mediatek/mt7622-bananapi-bpi-r64.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-chinchou-sku1.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-voltorb-sku589825.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-magneton-sku393218.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt8188-geralt-ciri-sku7.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-fennel-sku6.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-magneton-sku393216.dtb' not remade because of errors.
make: Target 'mediatek/mt8188-geralt-ciri-sku3.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-fennel14-sku2.dtb' not remade because of errors.
make: Target 'mediatek/mt6797-x20-dev.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-cozmo.dtb' not remade because of errors.
make: Target 'mediatek/mt8188-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-krane-sku0.dtb' not remade because of errors.
make: Target 'mediatek/mt8365-evk.dtb' not remade because of errors.
make: Target 'mediatek/mt8195-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt8395-radxa-nio-12l.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-makomo-sku0.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-steelix-sku131073.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-voltorb-sku589824.dtb' not remade because of errors.
make: Target 'mediatek/mt7988a-bananapi-bpi-r4.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-starmie-sku0.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-burnet.dtb' not remade because of errors.
make: Target 'mediatek/mt8188-geralt-ciri-sku6.dtb' not remade because of errors.
make: Target 'mediatek/mt7986a-acelink-ew-7886cax.dtb' not remade because of errors.
make: Target 'mediatek/mt8516-pumpkin.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-kakadu-sku22.dtb' not remade because of errors.
make: Target 'mediatek/mt7986a-rfb.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-kodama-sku288.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-krane-sku176.dtb' not remade because of errors.
make: Target 'mediatek/mt8188-geralt-ciri-sku0.dtb' not remade because of errors.
make: Target 'mediatek/mt6795-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-tentacruel-sku262148.dtb' not remade because of errors.
make: Target 'mediatek/mt8167-pumpkin.dtb' not remade because of errors.
make: Target 'mediatek/mt7981b-xiaomi-ax3000t.dtb' not remade because of errors.
make: Target 'mediatek/mt8188-geralt-ciri-sku2.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-steelix-sku131072.dtb' not remade because of errors.
make: Target 'mediatek/mt8195-cherry-dojo-r1.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-kappa.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-kakadu.dtb' not remade because of errors.
make: Target 'mediatek/mt7986a-bananapi-bpi-r3-mini.dtb' not remade because of errors.
make: Target 'mediatek/mt6795-sony-xperia-m5.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-magneton-sku393217.dtb' not remade because of errors.
make: Target 'mediatek/mt8192-evb.dtb' not remade because of errors.
make: Target 'mediatek/mt8195-cherry-tomato-r3.dtb' not remade because of errors.
make: Target 'mediatek/mt8195-cherry-tomato-r1.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-juniper-sku16.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-katsu-sku32.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-katsu-sku38.dtb' not remade because of errors.
make: Target 'mediatek/mt8188-geralt-ciri-sku5.dtb' not remade because of errors.
make: Target 'mediatek/mt8186-corsola-rusty-sku196608.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-jacuzzi-pico.dtb' not remade because of errors.
make: Target 'mediatek/mt8183-kukui-kodama-sku272.dtb' not remade because of errors.

Re: [PATCH v5 0/4] Add AIE driver support for mt8188

[Laurent Pinchart]

Hi Bo,

Thank you for the patches.

On Thu, Apr 03, 2025 at 03:38:32PM +0800, bo.kong wrote:
> From: Bo Kong <Bo.Kong@mediatek.com>
> 
> AIE(AI Engine) is one of the units in mt8188 ISP which provides hardware accelerated face detection function, it can detect different sizes of faces in a raw image.

This series is missing:

- The v4l2-compliance report
- Documentation of the UAPI
- A pointer to an open-source userspace implementation using the device,
  in a project relevant to the field of use

> Bo Kong (4):
>   media: dt-bindings: add MT8188 AIE
>   arm64: dts: mt8188: add aie node
>   uapi: linux: add MT8188 AIE
>   media: mediatek: add MT8188 AIE driver
> 
>  .../bindings/media/mediatek,mt8188-aie.yaml   |   78 +
>  arch/arm64/boot/dts/mediatek/mt8188.dtsi      |   33 +
>  drivers/media/platform/mediatek/Kconfig       |    1 +
>  drivers/media/platform/mediatek/Makefile      |    1 +
>  drivers/media/platform/mediatek/aie/Kconfig   |   12 +
>  drivers/media/platform/mediatek/aie/Makefile  |    5 +
>  drivers/media/platform/mediatek/aie/mtk_aie.h |  870 ++++++
>  .../media/platform/mediatek/aie/mtk_aie_drv.c | 2398 +++++++++++++++++
>  .../platform/mediatek/aie/mtk_aie_v4l2.c      | 1295 +++++++++
>  drivers/media/v4l2-core/v4l2-ioctl.c          |    3 +
>  include/uapi/linux/mtk_aie_v4l2_controls.h    |  308 +++
>  include/uapi/linux/videodev2.h                |    6 +
>  12 files changed, 5010 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/mediatek,mt8188-aie.yaml
>  create mode 100644 drivers/media/platform/mediatek/aie/Kconfig
>  create mode 100644 drivers/media/platform/mediatek/aie/Makefile
>  create mode 100644 drivers/media/platform/mediatek/aie/mtk_aie.h
>  create mode 100644 drivers/media/platform/mediatek/aie/mtk_aie_drv.c
>  create mode 100644 drivers/media/platform/mediatek/aie/mtk_aie_v4l2.c
>  create mode 100644 include/uapi/linux/mtk_aie_v4l2_controls.h

-- 
Regards,

Laurent Pinchart

Re: [PATCH v5 4/4] media: mediatek: add MT8188 AIE driver

[kernel test robot]

Hi bo.kong,

kernel test robot noticed the following build warnings:

[auto build test WARNING on robh/for-next]
[also build test WARNING on linus/master v6.14 next-20250404]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/bo-kong/media-dt-bindings-add-MT8188-AIE/20250403-154205
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20250403074005.21472-5-bo.kong%40mediatek.com
patch subject: [PATCH v5 4/4] media: mediatek: add MT8188 AIE driver
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20250405/202504050137.vMfW5SAb-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250405/202504050137.vMfW5SAb-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202504050137.vMfW5SAb-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/media/platform/mediatek/aie/mtk_aie_v4l2.c:14:
>> drivers/media/platform/mediatek/aie/mtk_aie.h:569:27: warning: 'fld_face_info_0' defined but not used [-Wunused-const-variable=]
     569 | static const unsigned int fld_face_info_0[FLD_MAX_FRAME] = {
         |                           ^~~~~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:540:27: warning: 'attr_wdma_size' defined but not used [-Wunused-const-variable=]
     540 | static const unsigned int attr_wdma_size[ATTR_LOOP_NUM][OUTPUT_WDMA_WRA_NUM] = {
         |                           ^~~~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:511:25: warning: 'attr_rdma_en' defined but not used [-Wunused-const-variable=]
     511 | static const signed int attr_rdma_en[ATTR_LOOP_NUM][INPUT_WDMA_WRA_NUM][2] = {
         |                         ^~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:503:27: warning: 'attr_out_2size' defined but not used [-Wunused-const-variable=]
     503 | static const unsigned int attr_out_2size[ATTR_LOOP_NUM] = { /* O */
         |                           ^~~~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:498:27: warning: 'attr_out_stride2_as_in' defined but not used [-Wunused-const-variable=]
     498 | static const unsigned int attr_out_stride2_as_in[ATTR_LOOP_NUM] = {
         |                           ^~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:488:27: warning: 'attr_ker_rdma_size' defined but not used [-Wunused-const-variable=]
     488 | static const unsigned int attr_ker_rdma_size[ATTR_LOOP_NUM] = {
         |                           ^~~~~~~~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:478:27: warning: 'attr_wdma_en' defined but not used [-Wunused-const-variable=]
     478 | static const unsigned int attr_wdma_en[ATTR_LOOP_NUM][OUTPUT_WDMA_WRA_NUM] = {
         |                           ^~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:388:25: warning: 'fd_rdma_en' defined but not used [-Wunused-const-variable=]
     388 | static const signed int fd_rdma_en[FD_LOOP_NUM][INPUT_WDMA_WRA_NUM][2] = {
         |                         ^~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:380:27: warning: 'out_ch_pack' defined but not used [-Wunused-const-variable=]
     380 | static const unsigned int out_ch_pack[FD_LOOP_NUM] = {
         |                           ^~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:373:27: warning: 'outlayer' defined but not used [-Wunused-const-variable=]
     373 | static const unsigned int outlayer[FD_LOOP_NUM] = {
         |                           ^~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:365:27: warning: 'in_ch_pack' defined but not used [-Wunused-const-variable=]
     365 | static const unsigned int in_ch_pack[FD_LOOP_NUM] = {
         |                           ^~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:358:27: warning: 'out_2size' defined but not used [-Wunused-const-variable=]
     358 | static const unsigned int out_2size[FD_LOOP_NUM] = {
         |                           ^~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:354:27: warning: 'fd_maxpool_indices' defined but not used [-Wunused-const-variable=]
     354 | static const unsigned int fd_maxpool_indices[FD_MAXPOOL_SIZE] = {
         |                           ^~~~~~~~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:350:27: warning: 'fd_stride_indices' defined but not used [-Wunused-const-variable=]
     350 | static const unsigned int fd_stride_indices[FD_STRIDE_SIZE] = {
         |                           ^~~~~~~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:343:27: warning: 'fd_out_stride2_in' defined but not used [-Wunused-const-variable=]
     343 | static const unsigned int fd_out_stride2_in[FD_LOOP_NUM] = {
         |                           ^~~~~~~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:332:27: warning: 'fd_ker_rdma_size' defined but not used [-Wunused-const-variable=]
     332 | static const unsigned int fd_ker_rdma_size[RPN_LOOP_NUM] = {
         |                           ^~~~~~~~~~~~~~~~
>> drivers/media/platform/mediatek/aie/mtk_aie.h:307:27: warning: 'out_stride_size' defined but not used [-Wunused-const-variable=]
     307 | static const unsigned int out_stride_size[FD_LOOP_NUM][OUTPUT_WDMA_WRA_NUM] = {
         |                           ^~~~~~~~~~~~~~~
--
   drivers/media/platform/mediatek/aie/mtk_aie_drv.c: In function 'aie_arrange_fddma_buf':
>> drivers/media/platform/mediatek/aie/mtk_aie_drv.c:577:20: warning: variable 'current_pa' set but not used [-Wunused-but-set-variable]
     577 |         dma_addr_t current_pa;
         |                    ^~~~~~~~~~
--
>> drivers/media/platform/mediatek/aie/mtk_aie_drv.c:872: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * The aie driver just loads the bin file provided by algorithm.


vim +/fld_face_info_0 +569 drivers/media/platform/mediatek/aie/mtk_aie.h

   372	
 > 373	static const unsigned int outlayer[FD_LOOP_NUM] = {
   374		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
   375		1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   376		0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   377		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0
   378	};
   379	
 > 380	static const unsigned int out_ch_pack[FD_LOOP_NUM] = {
   381		16, 16, 16, 16, 16, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
   382		32, 16, 16, 16, 32, 32, 32, 32, 32, 32, 0, 16, 16, 16, 16, 16, 32, 32,
   383		32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 16, 16, 16, 32, 32, 32,
   384		32, 32, 32, 0, 16, 16, 16, 16, 16, 32, 32, 32, 32, 32, 32, 32, 32, 32,
   385		32, 32, 32, 32, 32, 16, 16, 16, 32, 32, 32, 32, 32, 32, 0
   386	};
   387	
 > 388	static const signed int fd_rdma_en[FD_LOOP_NUM][INPUT_WDMA_WRA_NUM][2] = {
   389		{ { 99, 99 }, { 99, 99 }, { 99, 99 }, { -1, -1 } },
   390		{ { 0, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   391		{ { 1, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   392		{ { 1, 0 }, { 2, 0 }, { -1, -1 }, { -1, -1 } },
   393		{ { 3, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   394		{ { 1, 2 }, { 2, 2 }, { 4, 2 }, { 4, 3 } },
   395		{ { 5, 0 }, { 5, 1 }, { -1, -1 }, { -1, -1 } },
   396		{ { 6, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   397		{ { 5, 0 }, { 5, 1 }, { 7, 0 }, { -1, -1 } },
   398		{ { 8, 0 }, { 8, 1 }, { -1, -1 }, { -1, -1 } },
   399		{ { 9, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   400		{ { 5, 2 }, { 5, 3 }, { 7, 2 }, { 10, 2 } },
   401		{ { 11, 0 }, { 11, 1 }, { -1, -1 }, { -1, -1 } },
   402		{ { 12, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   403		{ { 13, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   404		{ { 11, 0 }, { 11, 1 }, { 14, 0 }, { -1, -1 } },
   405		{ { 15, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   406		{ { 16, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   407		{ { 11, 0 }, { 11, 1 }, { 14, 0 }, { 17, 0 } },
   408		{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
   409		{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
   410		{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
   411		{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
   412		{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
   413		{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
   414		{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
   415		{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
   416		{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
   417		{ { 19, 0 }, { 22, 0 }, { 22, 1 }, { 25, 0 } },
   418		{ { 99, 99 }, { 99, 99 }, { 99, 99 }, { -1, -1 } },
   419		{ { 29, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   420		{ { 30, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   421		{ { 30, 0 }, { 31, 0 }, { -1, -1 }, { -1, -1 } },
   422		{ { 32, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   423		{ { 30, 2 }, { 31, 2 }, { 33, 2 }, { 33, 3 } },
   424		{ { 34, 0 }, { 34, 1 }, { -1, -1 }, { -1, -1 } },
   425		{ { 35, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   426		{ { 34, 0 }, { 34, 1 }, { 36, 0 }, { -1, -1 } },
   427		{ { 37, 0 }, { 37, 1 }, { -1, -1 }, { -1, -1 } },
   428		{ { 38, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   429		{ { 34, 2 }, { 34, 3 }, { 36, 2 }, { 39, 2 } },
   430		{ { 40, 0 }, { 40, 1 }, { -1, -1 }, { -1, -1 } },
   431		{ { 41, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   432		{ { 42, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   433		{ { 40, 0 }, { 40, 1 }, { 43, 0 }, { -1, -1 } },
   434		{ { 44, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   435		{ { 45, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   436		{ { 40, 0 }, { 40, 1 }, { 43, 0 }, { 46, 0 } },
   437		{ { 47, 0 }, { 47, 1 }, { -1, -1 }, { -1, -1 } },
   438		{ { 47, 0 }, { 47, 1 }, { -1, -1 }, { -1, -1 } },
   439		{ { 47, 0 }, { 47, 1 }, { -1, -1 }, { -1, -1 } },
   440		{ { 47, 0 }, { 47, 1 }, { -1, -1 }, { -1, -1 } },
   441		{ { 47, 0 }, { 47, 1 }, { -1, -1 }, { -1, -1 } },
   442		{ { 47, 0 }, { 47, 1 }, { -1, -1 }, { -1, -1 } },
   443		{ { 47, 0 }, { 47, 1 }, { -1, -1 }, { -1, -1 } },
   444		{ { 47, 0 }, { 47, 1 }, { -1, -1 }, { -1, -1 } },
   445		{ { 47, 0 }, { 47, 1 }, { -1, -1 }, { -1, -1 } },
   446		{ { 48, 0 }, { 51, 0 }, { 51, 1 }, { 54, 0 } },
   447		{ { 99, 99 }, { 99, 99 }, { 99, 99 }, { -1, -1 } },
   448		{ { 58, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   449		{ { 59, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   450		{ { 59, 0 }, { 60, 0 }, { -1, -1 }, { -1, -1 } },
   451		{ { 61, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   452		{ { 59, 2 }, { 60, 2 }, { 62, 2 }, { 62, 3 } },
   453		{ { 63, 0 }, { 63, 1 }, { -1, -1 }, { -1, -1 } },
   454		{ { 64, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   455		{ { 63, 0 }, { 63, 1 }, { 65, 0 }, { -1, -1 } },
   456		{ { 66, 0 }, { 66, 1 }, { -1, -1 }, { -1, -1 } },
   457		{ { 67, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   458		{ { 63, 2 }, { 63, 3 }, { 65, 2 }, { 68, 2 } },
   459		{ { 69, 0 }, { 69, 1 }, { -1, -1 }, { -1, -1 } },
   460		{ { 70, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   461		{ { 71, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   462		{ { 69, 0 }, { 69, 1 }, { 72, 0 }, { -1, -1 } },
   463		{ { 73, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   464		{ { 74, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   465		{ { 69, 0 }, { 69, 1 }, { 72, 0 }, { 75, 0 } },
   466		{ { 76, 0 }, { 76, 1 }, { -1, -1 }, { -1, -1 } },
   467		{ { 76, 0 }, { 76, 1 }, { -1, -1 }, { -1, -1 } },
   468		{ { 76, 0 }, { 76, 1 }, { -1, -1 }, { -1, -1 } },
   469		{ { 76, 0 }, { 76, 1 }, { -1, -1 }, { -1, -1 } },
   470		{ { 76, 0 }, { 76, 1 }, { -1, -1 }, { -1, -1 } },
   471		{ { 76, 0 }, { 76, 1 }, { -1, -1 }, { -1, -1 } },
   472		{ { 76, 0 }, { 76, 1 }, { -1, -1 }, { -1, -1 } },
   473		{ { 76, 0 }, { 76, 1 }, { -1, -1 }, { -1, -1 } },
   474		{ { 76, 0 }, { 76, 1 }, { -1, -1 }, { -1, -1 } },
   475		{ { 77, 0 }, { 80, 0 }, { 80, 1 }, { 83, 0 } }
   476	};
   477	
 > 478	static const unsigned int attr_wdma_en[ATTR_LOOP_NUM][OUTPUT_WDMA_WRA_NUM] = {
   479		{ 1, 0, 1, 0 }, { 1, 0, 1, 0 }, { 1, 0, 0, 0 }, { 1, 1, 1, 1 },
   480		{ 1, 1, 1, 1 }, { 1, 0, 1, 0 }, { 1, 1, 0, 0 }, { 1, 0, 1, 0 },
   481		{ 1, 1, 0, 0 }, { 1, 0, 0, 0 }, { 1, 0, 0, 0 }, { 1, 0, 0, 0 },
   482		{ 1, 0, 0, 0 }, { 1, 0, 0, 0 }, { 1, 0, 0, 0 }, { 1, 1, 0, 0 },
   483		{ 1, 0, 0, 0 }, { 1, 0, 0, 0 }, { 1, 0, 0, 0 }, { 1, 0, 0, 0 },
   484		{ 1, 0, 0, 0 }, { 1, 0, 0, 0 }, { 1, 0, 0, 0 }, { 1, 0, 0, 0 },
   485		{ 1, 0, 0, 0 }, { 1, 0, 0, 0 }
   486	};
   487	
 > 488	static const unsigned int attr_ker_rdma_size[ATTR_LOOP_NUM] = {
   489		240, 1168, 272, 2320,
   490		2080, 9232, 3104, 9232,
   491		4128, 1040, 4624, 4624,
   492		1552, 4624, 4624, 4128,
   493		9232, 272, 9232, 2320,
   494		144, 9232, 272, 9232,
   495		2320, 144
   496	};
   497	
 > 498	static const unsigned int attr_out_stride2_as_in[ATTR_LOOP_NUM] = {
   499		0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0,
   500		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
   501	};
   502	
 > 503	static const unsigned int attr_out_2size[ATTR_LOOP_NUM] = { /* O */
   504		1, 1, 0, 1, 1, 1, 0,
   505		1, 0, 0, 0, 0, 0, 0,
   506		0, 0, 0, 0, 0, 0, 0,
   507		0, 0, 0, 0, 0
   508	};
   509	
   510	/* [loop][ch][output_index] */
 > 511	static const signed int attr_rdma_en[ATTR_LOOP_NUM][INPUT_WDMA_WRA_NUM][2] = {
   512		{ { 99, 99 }, { 99, 99 }, { 99, 99 }, { -1, -1 } },
   513		{ { 0, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   514		{ { 0, 0 }, { 1, 0 }, { -1, -1 }, { -1, -1 } },
   515		{ { 2, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   516		{ { 0, 2 }, { 1, 2 }, { 3, 2 }, { 3, 3 } },
   517		{ { 4, 0 }, { 4, 1 }, { -1, -1 }, { -1, -1 } },
   518		{ { 4, 0 }, { 4, 1 }, { 5, 0 }, { -1, -1 } },
   519		{ { 6, 0 }, { 6, 1 }, { -1, -1 }, { -1, -1 } },
   520		{ { 4, 2 }, { 4, 3 }, { 5, 2 }, { 7, 2 } },
   521		{ { 8, 0 }, { 8, 1 }, { -1, -1 }, { -1, -1 } },
   522		{ { 9, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   523		{ { 10, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   524		{ { 8, 0 }, { 8, 1 }, { 11, 0 }, { -1, -1 } },
   525		{ { 12, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   526		{ { 13, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   527		{ { 8, 0 }, { 8, 1 }, { 11, 0 }, { 14, 0 } },
   528		{ { 15, 0 }, { 15, 1 }, { -1, -1 }, { -1, -1 } },
   529		{ { 16, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   530		{ { 15, 0 }, { 15, 1 }, { -1, -1 }, { -1, -1 } },
   531		{ { 18, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   532		{ { 19, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   533		{ { 15, 0 }, { 15, 1 }, { -1, -1 }, { -1, -1 } },
   534		{ { 21, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   535		{ { 15, 0 }, { 15, 1 }, { -1, -1 }, { -1, -1 } },
   536		{ { 23, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
   537		{ { 24, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } }
   538	};
   539	
 > 540	static const unsigned int attr_wdma_size[ATTR_LOOP_NUM][OUTPUT_WDMA_WRA_NUM] = {
   541		{ 16384, 0, 4096, 0 },
   542		{ 16384, 0, 4096, 0 },
   543		{ 16384, 0, 0, 0 },
   544		{ 16384, 16384, 4096, 4096 },
   545		{ 8192, 8192, 2048, 2048 },
   546		{ 8192, 0, 2048, 0 },
   547		{ 8192, 8192, 0, 0 },
   548		{ 8192, 0, 2048, 0 },
   549		{ 2048, 2048, 0, 0 },
   550		{ 2048, 0, 0, 0 },
   551		{ 2048, 0, 0, 0 },
   552		{ 2048, 0, 0, 0 },
   553		{ 2048, 0, 0, 0 },
   554		{ 2048, 0, 0, 0 },
   555		{ 2048, 0, 0, 0 },
   556		{ 2048, 2048, 0, 0 },
   557		{ 2048, 0, 0, 0 },
   558		{ 0, 0, 0, 0 },
   559		{ 2048, 0, 0, 0 },
   560		{ 1024, 0, 0, 0 },
   561		{ 0, 0, 0, 0 },
   562		{ 2048, 0, 0, 0 },
   563		{ 0, 0, 0, 0 },
   564		{ 2048, 0, 0, 0 },
   565		{ 1024, 0, 0, 0 },
   566		{ 0, 0, 0, 0 }
   567	};
   568	
 > 569	static const unsigned int fld_face_info_0[FLD_MAX_FRAME] = {
   570		0x440, 0x44C, 0x458, 0x464, 0x470, 0x47C, 0x488, 0x494, 0x4A4,
   571		0x4B0, 0x4BC, 0x4C8, 0x4D4, 0x4E0, 0x4EC
   572	};
   573	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Re: [PATCH v5 4/4] media: mediatek: add MT8188 AIE driver

[CK Hu (胡俊光)]

On Thu, 2025-04-03 at 15:38 +0800, bo.kong wrote:
> From: Bo Kong <Bo.Kong@mediatek.com>
> 
> Add a V4L2 sub-device driver for MT8188 AIE.

This patch is a little big, so separate this patch by fd_mode.
So these patch would be:

1. Add MT8188 AIE driver (support FDMODE only)
2. Add ATTRIBUTEMODE
3. Add FLDMODE

> 
> Signed-off-by: Bo Kong <Bo.Kong@mediatek.com>
> ---

[snip]

> +
> +enum RS_CONFIG {
> +	RS_X_Y_MAG = 1,
> +	RS_SRZ_HORI_STEP = 3,
> +	RS_SRZ_VERT_STEP,

You allocate memory for the index 5 and 6 but it's not used.
Add the comment to describe why you allocate this memory but not use it.

> +	RS_INPUT_W_H = 7,
> +	RS_OUTPUT_W_H,
> +	RS_IN_X_Y_SIZE0 = 10,
> +	RS_IN_STRIDE0,
> +	RS_IN_X_Y_SIZE1,
> +	RS_IN_STRIDE1,
> +	RS_IN_X_Y_SIZE2,
> +	RS_IN_STRIDE2,
> +	RS_OUT_X_Y_SIZE0,
> +	RS_OUT_STRIDE0,
> +	RS_OUT_X_Y_SIZE1,
> +	RS_OUT_STRIDE1,
> +	RS_OUT_X_Y_SIZE2,
> +	RS_OUT_STRIDE2,
> +	RS_IN_0,
> +	RS_IN_1,
> +	RS_IN_2,
> +	RS_OUT_0,
> +	RS_OUT_1,
> +	RS_OUT_2,
> +	RS_CON_IN_BA_MSB,
> +	RS_CON_OUT_BA_MSB,
> +};
> +
> 

[snip]

> +
> +struct aie_static_info_element {
> +	u32 fd_wdma_size[OUTPUT_WDMA_WRA_NUM];
> +	u32 out_xsize_plus_1;
> +	u32 out_height;
> +	u32 out_ysize_plus_1_stride2;
> +	u32 out_stride;
> +	u32 out_stride_stride2;
> +	u32 out_width;
> +	u32 img_width;
> +	u32 img_height;
> +	u32 stride2_out_width;
> +	u32 stride2_out_height;
> +	u32 out_xsize_plus_1_stride2;
> +	u32 input_xsize_plus_1;
> +};
> +
> +struct aie_static_info {
> +	struct aie_static_info_element inf_elm[FD_LOOP_NUM];
> +};

aie_static_info{} is redundant.
Use struct aie_static_info_element{} directly.

> +
> +enum aie_state {
> +	STATE_NA,
> +	STATE_INIT,
> +	STATE_OPEN
> +};
> +

[snip]

> +
> +struct aie_reg_cfg {
> +	u32 rs_adr;
> +	u32 yuv2rgb_adr;
> +	u32 fd_adr;
> +	u32 fd_pose_adr;

fd_pose_adr is useless, so drop it.

> +	u32 fd_mode;
> +	u32 hw_result;
> +	u32 hw_result1;
> +	u32 reserved;

reserved is useless, so drop it.

> +};
> +
> +struct aie_hw_rect {
> +	u16 width;
> +	u16 height;
> +};

[snip]

> +
> +struct aie_attr_para {
> +	u32 w_idx;
> +	u32 r_idx;

In this code, only one attribute parameter is used at one time.
So it's not necessary to queue the attribute parameter.
Drop w_idx and r_idx.

> +	u32 sel_mode[MAX_ENQUE_FRAME_NUM];
> +	u16 img_width[MAX_ENQUE_FRAME_NUM];
> +	u16 img_height[MAX_ENQUE_FRAME_NUM];
> +	u16 crop_width[MAX_ENQUE_FRAME_NUM];
> +	u16 crop_height[MAX_ENQUE_FRAME_NUM];
> +	u32 src_img_fmt[MAX_ENQUE_FRAME_NUM];
> +	u32 rotate_degree[MAX_ENQUE_FRAME_NUM];
> +	u32 src_img_addr[MAX_ENQUE_FRAME_NUM];
> +	u32 src_img_addr_uv[MAX_ENQUE_FRAME_NUM];
> +};
> +

[snip]

> +
> +struct imem_buf_info {
> +	void *va;
> +	dma_addr_t pa;
> +	unsigned int size;
> +	unsigned int reserved;

reserved is useless, so drop it.

> +};
> +

[snip]

> +
> +static int aie_config_y2r(struct mtk_aie_dev *fd, struct aie_enq_info *aie_cfg,
> +			  int mode)
> +{
> +	u32 img_addr;
> +	u32 img_addr_UV;

Lower case for variable name.

> +	u32 img_off;
> +	u32 img_off_uv;
> +	u32 *yuv2rgb_cfg;
> +	u32 srcbuf, srcbuf_UV;
> +	u16 xmag_0, ymag_0;
> +	u16 pym0_out_w;
> +	u16 pym0_out_h;
> +	u16 stride_pym0_out_w;
> +	u16 sr_crp_w;
> +	u16 sr_crp_h;
> +	u16 y1_stride;
> +
> +	if (!aie_cfg->en_roi) {
> +		img_off = 0;
> +		img_off_uv = 0;
> +	} else {
> +		if (aie_cfg->src_img_fmt == FMT_MONO || aie_cfg->src_img_fmt == FMT_YUV_2P ||
> +		    aie_cfg->src_img_fmt == FMT_YVU_2P) {
> +			y1_stride = aie_cfg->src_img_stride * aie_cfg->src_roi.y1;
> +			img_off = y1_stride + aie_cfg->src_roi.x1;
> +			img_off_uv = y1_stride + aie_cfg->src_roi.x1;
> +		} else if (aie_cfg->src_img_fmt == FMT_YUV420_2P ||
> +			   aie_cfg->src_img_fmt == FMT_YUV420_1P) {
> +			y1_stride = aie_cfg->src_img_stride * aie_cfg->src_roi.y1;
> +			img_off = y1_stride + aie_cfg->src_roi.x1;
> +			img_off_uv = y1_stride / 2 + aie_cfg->src_roi.x1;
> +		} else if (aie_cfg->src_img_fmt == FMT_YUYV ||
> +			   aie_cfg->src_img_fmt == FMT_YVYU ||
> +			   aie_cfg->src_img_fmt == FMT_UYVY ||
> +			   aie_cfg->src_img_fmt == FMT_VYUY) {
> +			y1_stride = aie_cfg->src_img_stride * aie_cfg->src_roi.y1;
> +			img_off = y1_stride + aie_cfg->src_roi.x1 * 2;
> +			img_off_uv = y1_stride + aie_cfg->src_roi.x1 * 2;
> +		} else {
> +			dev_err(fd->dev, "Unsupport input format %d", aie_cfg->src_img_fmt);
> +			return -EINVAL;

I think you should check format when setting format not here.
It's not necessary to check format everywhere you use it.

> +		}
> +	}
> +
> +	img_addr = aie_cfg->src_img_addr + img_off;
> +	img_addr_UV = aie_cfg->src_img_addr_uv + img_off_uv;
> +
> +	srcbuf = img_addr;
> +	if (aie_cfg->src_img_fmt == FMT_YUV420_2P || aie_cfg->src_img_fmt == FMT_YUV420_1P ||
> +	    aie_cfg->src_img_fmt == FMT_YUV_2P || aie_cfg->src_img_fmt == FMT_YVU_2P)
> +		srcbuf_UV = img_addr_UV;
> +	else
> +		srcbuf_UV = 0;

srcbuf = aie_cfg->src_img_addr + img_off;
srcbuf_UV = aie_cfg->src_img_addr_uv + img_off_uv or 0;
and drop img_addr and img_addr_UV.

> +
> +	if (mode == FDMODE) {
> +		sr_crp_w = fd->base_para->crop_rect.width;
> +		sr_crp_h = fd->base_para->crop_rect.height;
> +		yuv2rgb_cfg = (u32 *)fd->base_para->fd_yuv2rgb_cfg_va;
> +		pym0_out_w = fd->base_para->pyramid_rect.width;
> +	}
> +	if (mode == ATTRIBUTEMODE) {
> +		sr_crp_w = fd->attr_para->crop_width[fd->attr_para->w_idx];
> +		sr_crp_h = fd->attr_para->crop_height[fd->attr_para->w_idx];
> +		yuv2rgb_cfg = (u32 *)fd->base_para->attr_yuv2rgb_cfg_va[fd->attr_para->w_idx];
> +		pym0_out_w = ATTR_MODE_PYRAMID_WIDTH;
> +	}
> +
> +	pym0_out_h = pym0_out_w * sr_crp_h / sr_crp_w;
> +
> +	if (pym0_out_w != 0) {
> +		xmag_0 = 512 * sr_crp_w / pym0_out_w;
> +		ymag_0 = xmag_0;
> +	} else {

Why do you allow pym0_out_w is zero?
return error here.
It's better to return error when user space set wrong parameter.

> +		xmag_0 = 0;
> +		ymag_0 = 0;
> +	}
> +
> +	yuv2rgb_cfg[Y2R_SRC_DST_FORMAT] = (yuv2rgb_cfg[Y2R_SRC_DST_FORMAT] & 0xFFFFFFF8) |
> +					  ((aie_cfg->src_img_fmt) & 0x7);

You does not assign other bits of Y2R_SRC_DST_FORMAT, so you could set it as

yuv2rgb_cfg[Y2R_SRC_DST_FORMAT] = (aie_cfg->src_img_fmt) & 0x7;

> +	if (aie_cfg->src_img_fmt == FMT_YUV420_2P || aie_cfg->src_img_fmt == FMT_YUV420_1P) {
> +		/* for match patten */
> +		yuv2rgb_cfg[Y2R_SRC_DST_FORMAT] = (yuv2rgb_cfg[Y2R_SRC_DST_FORMAT] &
> +						  0xFFFFFFF8) | ((0x3) & 0x7);

You does not assign other bits of Y2R_SRC_DST_FORMAT, so you could set it as

yuv2rgb_cfg[Y2R_SRC_DST_FORMAT] = 0x3;

Maybe use a symbol to replace 0x3;

> +	}
> +	yuv2rgb_cfg[Y2R_IN_W_H] = (yuv2rgb_cfg[Y2R_IN_W_H] & 0xF800F800) |
> +				  ((sr_crp_w << 16) & 0x7FF0000) | (sr_crp_h & 0x7FF);
> +	yuv2rgb_cfg[Y2R_OUT_W_H] = (yuv2rgb_cfg[Y2R_OUT_W_H] & 0xF800F800) |
> +				   ((pym0_out_w << 16) & 0x7FF0000) | (pym0_out_h & 0x7FF);
> +
> +	if (aie_cfg->src_img_fmt == FMT_YUV_2P || aie_cfg->src_img_fmt == FMT_YVU_2P) {
> +		/* 2 plane */
> +		yuv2rgb_cfg[Y2R_RA0_RA1_EN] = (yuv2rgb_cfg[Y2R_RA0_RA1_EN] & 0xFFFFFFEE) | 0x11;
> +		if (aie_cfg->en_roi) {
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE0] = aie_cmb_u16(dif_x(aie_cfg), dif_y(aie_cfg));
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE1] = aie_cmb_u16(dif_x(aie_cfg), dif_y(aie_cfg));

I think you could define a structure and its member has different type,

struct yuv2rgb_config {
	...
	u16	in_x_size0;
	u16	in_y_size0;
	u16	in_x_size1;
	u16	in_y_size1;
	...
};

struct yuv2rgb_config *yuv2rgb_cfg;

yuv2rgb_cfg->in_x_size0 = dif_x(aie_cfg);
yuv2rgb_cfg->in_y_size0 = dif_y(aie_cfg);
yuv2rgb_cfg->in_x_size1 = dif_x(aie_cfg);
yuv2rgb_cfg->in_y_size1 = dif_y(aie_cfg);

This look more readable.

> +		} else {
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE0] = aie_cmb_u16(sr_crp_w - 1, sr_crp_h - 1);
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE1] = aie_cmb_u16(sr_crp_w - 1, sr_crp_h - 1);
> +		}
> +		yuv2rgb_cfg[Y2R_IN_STRIDE0_BUS_SIZE0] =
> +			(yuv2rgb_cfg[Y2R_IN_STRIDE0_BUS_SIZE0] & 0xFFF0) |
> +			((aie_cfg->src_img_stride << 16) & 0xFFFF0000) | 0x1;
> +		yuv2rgb_cfg[Y2R_IN_STRIDE1_BUS_SIZE1] =
> +			(yuv2rgb_cfg[Y2R_IN_STRIDE1_BUS_SIZE1] & 0xFFF0) |
> +			((aie_cfg->src_img_stride << 16) & 0xFFFF0000) | 0x1;
> +	} else if (aie_cfg->src_img_fmt == FMT_MONO) {
> +		yuv2rgb_cfg[Y2R_RA0_RA1_EN] =
> +			(yuv2rgb_cfg[Y2R_RA0_RA1_EN] & 0xFFFFFFEE) | 0x01;

You does not assign other bits of Y2R_RA0_RA1_EN, so you could set it as

yuv2rgb_cfg[Y2R_RA0_RA1_EN] = 0x1;


> +		if (aie_cfg->en_roi) {
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE0] = aie_cmb_u16(dif_x(aie_cfg), dif_y(aie_cfg));
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE1] = aie_cmb_u16(dif_x(aie_cfg), dif_y(aie_cfg));
> +		} else {
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE0] = aie_cmb_u16(sr_crp_w - 1, sr_crp_h - 1);
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE1] = aie_cmb_u16(sr_crp_w - 1, sr_crp_h - 1);
> +		}
> +		yuv2rgb_cfg[Y2R_IN_STRIDE0_BUS_SIZE0] =
> +			(yuv2rgb_cfg[Y2R_IN_STRIDE0_BUS_SIZE0] & 0xFFF0) |
> +			((aie_cfg->src_img_stride << 16) & 0xFFFF0000) | 0x0;
> +		yuv2rgb_cfg[Y2R_IN_STRIDE1_BUS_SIZE1] =
> +			(yuv2rgb_cfg[Y2R_IN_STRIDE1_BUS_SIZE1] & 0xFFF0) |
> +			((aie_cfg->src_img_stride << 16) & 0xFFFF0000) | 0x0;

I think you could define a structure and its member has different type,

struct yuv2rgb_config {
	...
	u16	in_bus_size0;
	u16	in_stride0;
	u16	in_bus_size1;
	u16	in_stride1;
	...
};

struct yuv2rgb_config *yuv2rgb_cfg;

yuv2rgb_cfg->in_bus_size0 = 0;
yuv2rgb_cfg->in_stride0 = aie_cfg->src_img_stride;
yuv2rgb_cfg->in_bus_size1 = 0;
yuv2rgb_cfg->in_stride1 = aie_cfg->src_img_stride;

This look more readable.

> +	} else if (aie_cfg->src_img_fmt == FMT_YUYV ||
> +		   aie_cfg->src_img_fmt == FMT_YVYU ||
> +		   aie_cfg->src_img_fmt == FMT_UYVY ||
> +		   aie_cfg->src_img_fmt == FMT_VYUY) {
> +		/* 1 plane */
> +		yuv2rgb_cfg[Y2R_RA0_RA1_EN] = (yuv2rgb_cfg[Y2R_RA0_RA1_EN] & 0xFFFFFFEE) | 0x1;
> +		if (aie_cfg->en_roi) {
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE0] = aie_cmb_u16(2 * (dif_x(aie_cfg) + 1) - 1,
> +								    dif_y(aie_cfg));
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE1] = aie_cmb_u16(2 * (dif_x(aie_cfg) + 1) - 1,
> +								    dif_y(aie_cfg));
> +		} else {
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE0] = aie_cmb_u16(2 * sr_crp_w - 1, sr_crp_h - 1);
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE1] = aie_cmb_u16(2 * sr_crp_w - 1, sr_crp_h - 1);
> +		}
> +		yuv2rgb_cfg[Y2R_IN_STRIDE0_BUS_SIZE0] =
> +			(yuv2rgb_cfg[Y2R_IN_STRIDE0_BUS_SIZE0] & 0xFFF0) |
> +			((aie_cfg->src_img_stride << 16) & 0xFFFF0000) | 0x3;
> +		yuv2rgb_cfg[Y2R_IN_STRIDE1_BUS_SIZE1] =
> +			(yuv2rgb_cfg[Y2R_IN_STRIDE1_BUS_SIZE1] & 0xFFF0) |
> +			((aie_cfg->src_img_stride << 16) & 0xFFFF0000) | 0x3;
> +	}
> +
> +	/* AIE3.0 */
> +	if (aie_cfg->src_img_fmt == FMT_YUV420_2P ||
> +	    aie_cfg->src_img_fmt == FMT_YUV420_1P) {
> +		yuv2rgb_cfg[Y2R_RA0_RA1_EN] =
> +			(yuv2rgb_cfg[Y2R_RA0_RA1_EN] & 0xFFFFFFEE) | 0x11;
> +		if (aie_cfg->en_roi) {
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE0] = aie_cmb_u16(dif_x(aie_cfg), dif_y(aie_cfg));
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE1] = aie_cmb_u16(dif_x(aie_cfg),
> +								    dif_y(aie_cfg) / 2);
> +		} else {
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE0] =
> +				aie_cmb_u16(sr_crp_w - 1, sr_crp_h - 1);
> +			yuv2rgb_cfg[Y2R_IN_X_Y_SIZE1] = aie_cmb_u16(sr_crp_w - 1,
> +								    sr_crp_h / 2 - 1);
> +		}
> +		yuv2rgb_cfg[Y2R_IN_STRIDE0_BUS_SIZE0] =
> +			(yuv2rgb_cfg[Y2R_IN_STRIDE0_BUS_SIZE0] & 0xFFF0) |
> +			((aie_cfg->src_img_stride << 16) & 0xFFFF0000) | 0x0;
> +		yuv2rgb_cfg[Y2R_IN_STRIDE1_BUS_SIZE1] =
> +			(yuv2rgb_cfg[Y2R_IN_STRIDE1_BUS_SIZE1] & 0xFFF0) |
> +			((aie_cfg->src_img_stride << 16) & 0xFFFF0000) | 0x0;
> +
> +		yuv2rgb_cfg[Y2R_CO2_FMT_MODE_EN] =
> +			(yuv2rgb_cfg[Y2R_CO2_FMT_MODE_EN] & 0xFFFFFFFE) | 0x01;
> +		if (aie_cfg->en_roi) {
> +			yuv2rgb_cfg[Y2R_CO2_CROP_X] = aie_cmb_u16(0, dif_x(aie_cfg));
> +			yuv2rgb_cfg[Y2R_CO2_CROP_Y] = aie_cmb_u16(0, dif_y(aie_cfg));
> +		} else {
> +			yuv2rgb_cfg[Y2R_CO2_CROP_X] = aie_cmb_u16(0, sr_crp_w - 1);
> +			yuv2rgb_cfg[Y2R_CO2_CROP_Y] = aie_cmb_u16(0, sr_crp_h - 1);
> +		}
> +	} else {
> +		yuv2rgb_cfg[Y2R_CO2_FMT_MODE_EN] =
> +			(yuv2rgb_cfg[Y2R_CO2_FMT_MODE_EN] & 0xFFFFFFFE);
> +
> +		if (aie_cfg->en_roi) {
> +			yuv2rgb_cfg[Y2R_CO2_CROP_X] = aie_cmb_u16(0, dif_x(aie_cfg));
> +			yuv2rgb_cfg[Y2R_CO2_CROP_Y] = aie_cmb_u16(0, dif_y(aie_cfg));
> +		} else {
> +			yuv2rgb_cfg[Y2R_CO2_CROP_X] = aie_cmb_u16(0, sr_crp_w - 1);
> +			yuv2rgb_cfg[Y2R_CO2_CROP_Y] = aie_cmb_u16(0, sr_crp_h - 1);
> +		}
> +	}
> +
> +	stride_pym0_out_w = round_up(pym0_out_w, 8);
> +
> +	yuv2rgb_cfg[Y2R_OUT_X_Y_SIZE0] =
> +		aie_cmb_u16(pym0_out_w - 1, pym0_out_h - 1);
> +	set_cmb_cfg(yuv2rgb_cfg, Y2R_OUT_STRIDE0_BUS_SIZE0, stride_pym0_out_w);
> +	yuv2rgb_cfg[Y2R_OUT_X_Y_SIZE1] =
> +		aie_cmb_u16(pym0_out_w - 1, pym0_out_h - 1);
> +	set_cmb_cfg(yuv2rgb_cfg, Y2R_OUT_STRIDE1_BUS_SIZE1, stride_pym0_out_w);
> +	yuv2rgb_cfg[Y2R_OUT_X_Y_SIZE2] =
> +		aie_cmb_u16(pym0_out_w - 1, pym0_out_h - 1);
> +	set_cmb_cfg(yuv2rgb_cfg, Y2R_OUT_STRIDE2_BUS_SIZE2, stride_pym0_out_w);
> +
> +	if (aie_cfg->en_padding) {
> +		yuv2rgb_cfg[Y2R_PADDING_EN_UP_DOWN] =
> +			1 | ((aie_cfg->src_padding.up << 4) & 0x1FF0) |
> +			((aie_cfg->src_padding.down << 16) & 0x01FF0000);
> +		yuv2rgb_cfg[Y2R_PADDING_RIGHT_LEFT] =
> +			(aie_cfg->src_padding.right & 0x01FF) |
> +			((aie_cfg->src_padding.left << 16) & 0x01FF0000);

I think you could define a structure and its member has different type,

struct yuv2rgb_config {
	...
	u16	padding_en:4;
	u16	padding_up:12;
	u16	padding_down;
	u16	padding_right;
	u16	padding_left;
	...
};

struct yuv2rgb_config *yuv2rgb_cfg;

yuv2rgb_cfg->padding_en = 1;
yuv2rgb_cfg->padding_up = aie_cfg->src_padding.up;
yuv2rgb_cfg->padding_down = aie_cfg->src_padding.down;
yuv2rgb_cfg->padding_right = aie_cfg->src_padding.right;
yuv2rgb_cfg->padding_left = aie_cfg->src_padding.left;

This look more readable.

> +	} else {
> +		yuv2rgb_cfg[Y2R_PADDING_EN_UP_DOWN] = 0;
> +		yuv2rgb_cfg[Y2R_PADDING_RIGHT_LEFT] = 0;
> +	}
> +
> +	yuv2rgb_cfg[Y2R_IN_0] = srcbuf;
> +	yuv2rgb_cfg[Y2R_IN_1] = srcbuf_UV;
> +
> +	yuv2rgb_cfg[Y2R_OUT_0] = (u32)fd->base_para->rs_pym_rst_pa[0][0];
> +	yuv2rgb_cfg[Y2R_OUT_1] = (u32)fd->base_para->rs_pym_rst_pa[0][1];
> +	yuv2rgb_cfg[Y2R_OUT_2] = (u32)fd->base_para->rs_pym_rst_pa[0][2];
> +
> +	yuv2rgb_cfg[Y2R_X_Y_MAG] = (xmag_0 & 0x3FFF) | ((ymag_0 << 16) & 0x3FFF0000);
> +
> +	if (sr_crp_w >= pym0_out_w) {
> +		/* down scale AIE1.0 by FRZ */
> +		yuv2rgb_cfg[Y2R_RS_SEL_SRZ_EN] =
> +			(yuv2rgb_cfg[Y2R_RS_SEL_SRZ_EN] & 0x00100070);
> +		yuv2rgb_cfg[Y2R_SRZ_HORI_STEP] = 0;
> +		yuv2rgb_cfg[Y2R_SRZ_VERT_STEP] = 0;
> +	} else {
> +		/* SRZ */
> +		/* 0: FDRZ for down scaling */
> +		/* 1: SRZ for up scaling */
> +		yuv2rgb_cfg[Y2R_RS_SEL_SRZ_EN] =
> +			(yuv2rgb_cfg[Y2R_RS_SEL_SRZ_EN] & 0x00100070) | SRZ_BIT;
> +		yuv2rgb_cfg[Y2R_SRZ_HORI_STEP] = ((sr_crp_w - 1) << 15) / (pym0_out_w - 1);
> +		yuv2rgb_cfg[Y2R_SRZ_VERT_STEP] = ((sr_crp_h - 1) << 15) / (pym0_out_h - 1);
> +	}
> +
> +	yuv2rgb_cfg[Y2R_CON_IN_BA_MSB] = (u32)0x02020202;
> +	yuv2rgb_cfg[Y2R_CON_OUT_BA_MSB] = (u32)0x02020202;
> +
> +	return 0;
> +}
> +
> +static int aie_config_rs(struct mtk_aie_dev *fd, struct aie_enq_info *aie_cfg)
> +{
> +	u32 *rs_cfg;
> +	u32 *rs_tbl[2];
> +	u16 xmag_0, ymag_0;
> +	u16 pym_out_w[3];
> +	u16 pym_out_h[3];
> +	u16 round_w;
> +	u16 sr_crp_w;
> +	u16 sr_crp_h;
> +	int i;
> +
> +	sr_crp_w = fd->base_para->crop_rect.width;
> +	sr_crp_h = fd->base_para->crop_rect.height;
> +
> +	rs_cfg = (u32 *)fd->base_para->fd_rs_cfg_va;
> +
> +	pym_out_w[0] = fd->base_para->pyramid_rect.width;
> +	pym_out_w[1] = pym_out_w[0] >> 1;
> +	pym_out_w[2] = pym_out_w[1] >> 1;
> +
> +	pym_out_h[0] = pym_out_w[0] * sr_crp_h / sr_crp_w;

In aie_update_table(), img_height is equal to pym_height, but here is not.

	pstv->inf_elm[PYMX_START_LOOP(0)].img_width = pym_width;
	pstv->inf_elm[PYMX_START_LOOP(0)].img_height = pym_height;

Which one is correct? If both are correct, add comment to describe why these two are different.

> +	pym_out_h[1] = pym_out_h[0] >> 1;
> +	pym_out_h[2] = pym_out_h[1] >> 1;
> +
> +	for (i = 0; i < 2; i++) {
> +		rs_tbl[i] = rs_cfg + fd->variant->rs_cfg_size * i;

Because you would not use rs_tbl[0] and rs_tbl[1] at the same time,
it's not necessary to define rs_tbl as an array. Just define it as

u32 *rs_tbl;

> +
> +		rs_tbl[i][RS_IN_0] = (u32)fd->base_para->rs_pym_rst_pa[i][0];
> +		rs_tbl[i][RS_IN_1] = (u32)fd->base_para->rs_pym_rst_pa[i][1];
> +		rs_tbl[i][RS_IN_2] = (u32)fd->base_para->rs_pym_rst_pa[i][2];
> +
> +		rs_tbl[i][RS_OUT_0] = (u32)fd->base_para->rs_pym_rst_pa[i + 1][0];
> +		rs_tbl[i][RS_OUT_1] = (u32)fd->base_para->rs_pym_rst_pa[i + 1][1];
> +		rs_tbl[i][RS_OUT_2] = (u32)fd->base_para->rs_pym_rst_pa[i + 1][2];
> +
> +		rs_tbl[i][RS_INPUT_W_H] = (rs_tbl[i][RS_INPUT_W_H] & 0xF800F800) |
> +			(pym_out_h[i] & 0x7FF) | ((pym_out_w[i] << 16) & 0x7FF0000);
> +		rs_tbl[i][RS_OUTPUT_W_H] = (rs_tbl[i][RS_OUTPUT_W_H] & 0xF800F800) |
> +			(pym_out_h[i + 1] & 0x7FF) | ((pym_out_w[i + 1] << 16) & 0x7FF0000);

I think you could define a structure and its member has different type,

struct rs_table {
	...
	u16	in_h;
	u16	in_w;
	u16	out_h;
	u16	out_w;
	...
};

struct rs_table *rs_tbl;

rs_tbl->in_h = pym_out_h[i];
rs_tbl->in_w = pym_out_w[i];
rs_tbl->out_h = pym_out_h[i + 1];
rs_tbl->out_w = pym_out_w[i + 1];

This look more readable.

> +
> +		rs_tbl[i][RS_IN_X_Y_SIZE0] = aie_cmb_u16(pym_out_w[i] - 1, pym_out_h[i] - 1);
> +		rs_tbl[i][RS_IN_X_Y_SIZE1] = aie_cmb_u16(pym_out_w[i] - 1, pym_out_h[i] - 1);
> +		rs_tbl[i][RS_IN_X_Y_SIZE2] = aie_cmb_u16(pym_out_w[i] - 1, pym_out_h[i] - 1);
> +
> +		set_cmb_cfg(rs_tbl[i], RS_IN_STRIDE0, pym_out_w[i]);
> +		set_cmb_cfg(rs_tbl[i], RS_IN_STRIDE1, pym_out_w[i]);
> +		set_cmb_cfg(rs_tbl[i], RS_IN_STRIDE2, pym_out_w[i]);
> +
> +		rs_tbl[i][RS_OUT_X_Y_SIZE0] = aie_cmb_u16(pym_out_w[i + 1] - 1,
> +							  pym_out_h[i + 1] - 1);
> +		rs_tbl[i][RS_OUT_X_Y_SIZE1] = aie_cmb_u16(pym_out_w[i + 1] - 1,
> +							  pym_out_h[i + 1] - 1);
> +		rs_tbl[i][RS_OUT_X_Y_SIZE2] = aie_cmb_u16(pym_out_w[i + 1] - 1,
> +							  pym_out_h[i + 1] - 1);
> +
> +		if (i == 0)
> +			round_w = pym_out_w[i + 1];
> +		else
> +			round_w = round_up(pym_out_w[i + 1], 8);
> +
> +		set_cmb_cfg(rs_tbl[i], RS_OUT_STRIDE0, round_w);
> +		set_cmb_cfg(rs_tbl[i], RS_OUT_STRIDE1, round_w);
> +		set_cmb_cfg(rs_tbl[i], RS_OUT_STRIDE2, round_w);
> +
> +		xmag_0 = 512 * pym_out_w[i] / pym_out_w[i + 1];
> +		ymag_0 = xmag_0;
> +
> +		rs_tbl[i][RS_X_Y_MAG] = (xmag_0 & 0x3FFF) | ((ymag_0 << 16) & 0x3FFF0000);
> +		rs_tbl[i][RS_CON_IN_BA_MSB] = (u32)0x02020202;
> +		rs_tbl[i][RS_CON_OUT_BA_MSB] = (u32)0x02020202;
> +	}
> +
> +	return 0;
> +}
> +
> +static int aie_config_network(struct mtk_aie_dev *fd,
> +			      struct aie_enq_info *aie_cfg)
> +{
> +	struct aie_static_info *pstv = &fd->st_info;
> +	u16 pyramid0_out_w, pyramid0_out_h, pyramid1_out_h, pyramid2_out_h;
> +	u16 out_ysize_minus_1, out_ysize_minus_1_stride2;
> +	u16 fd_xsize[4], size, poolsize, stridesize;
> +	u16 input_height, out_height;
> +	u16 conv_width, conv_height;
> +	u32 *fd_cur_cfg, *fd_cur_set;
> +	u32 sr_crp_w, sr_crp_h;
> +	u32 cal_x, cal_y;
> +	u8 uch, uloop;
> +	u8 i, j;
> +	void *fd_cfg;
> +
> +	sr_crp_w = fd->base_para->crop_rect.width;
> +	sr_crp_h = fd->base_para->crop_rect.height;
> +
> +	pyramid0_out_w = fd->base_para->pyramid_rect.width;
> +	pyramid0_out_h = pyramid0_out_w * sr_crp_h / sr_crp_w;
> +
> +	pyramid1_out_h = pyramid0_out_h / 2;
> +	pyramid2_out_h = pyramid1_out_h / 2;
> +
> +	fd_cfg = fd->base_para->fd_fd_cfg_va;
> +
> +	for (i = 0; i < FD_LOOP_NUM; i++) {

I think this for-loop could be changed to nest for-loop and the code would be more simple.
Below comment is based on the nest for-loop.

struct fd_config {
	...
};

fd_cur_cfg = (struct fd_config *)fd_cfg;
for (i = 0; i < RPN_NUM; i++) {
	for (j = 0; j < RPN_LOOP_NUM; j++, fd_cur_cfg++) {

> +		fd_cur_cfg = (u32 *)fd_cfg + fd->variant->fd_cfg_size * i;

Drop this.

> +		fd_cur_cfg[FD_INPUT_ROTATE] = (fd_cur_cfg[FD_INPUT_ROTATE] & 0xFFFF0FFF) |
> +				     ((aie_cfg->rotate_degree << 12) & 0x3000);

struct fd_config {
	...
	u32	input_rotate;
	...
};

fd_cur_cfg->input_rotate = aie_cfg->rotate_degree << 12;

This looks more readable.

> +
> +		if (i == 0)
> +			input_height = pyramid2_out_h;
> +		else if (i == (RPNX_LOOP_NUM(2) + 1))
> +			input_height = pyramid1_out_h;
> +		else if (i == (RPNX_LOOP_NUM(1) + 1))
> +			input_height = pyramid0_out_h;
> +		else
> +			if (fd_out_stride2_in[i] == 0)
> +				input_height = out_height;
> +			else
> +				input_height = (out_height + 1) / 2;

Define pyramid0_out_h, pyramid1_out_h, pyramid2_out_h as an array pyramid_out_h[],
and

#define FD_OUT_STRIDE2_IN(n)	((n == 5) || (n == 11) ? 1 : 0)

if (j == 0)
	input_height = pyramid_out_h[2 - i];
else if (FD_OUT_STRIDE2_IN(j) == 0)
	input_height = out_height;
else
	input_height = (out_height + 1) / 2;

This looks more simple.

> +
> +		poolsize = is_fd_maxpool(i);
> +		stridesize = get_fd_stride(i);

poolsize = (j == 1) ? 1 : 0;
stridesize = (j == 0) ? 2 : 1;

This looks more simple.

> +		if (poolsize == 1)
> +			out_height =
> +				DIV_ROUND_UP(input_height, 2 * poolsize);
> +		else
> +			out_height = DIV_ROUND_UP(input_height, stridesize + 2 * poolsize);

When j == 0, poolsize = 0, stridesize = 2, then

out_height = DIV_ROUND_UP(input_height, 2);

When j == 1, poolsize = 1, stridesize = 1, then

out_height = DIV_ROUND_UP(input_height, 2);

When j > 1, poolsize = 0, stridesize = 1, then

out_height = DIV_ROUND_UP(input_height, 1);

So these could be simplified as

out_height = DIV_ROUND_UP(input_height, j > 1 ? 1 : 2);

> +
> +		if (i == RPNX_LOOP_NUM(0) || i == RPNX_LOOP_NUM(1) || i == RPNX_LOOP_NUM(2)) {

if (j == (RPN_LOOP_NUM - 1)) {

> +			conv_width = fd->base_para->img_rect.width;
> +			conv_height = fd->base_para->img_rect.height;
> +			fd_xsize[0] = pstv->inf_elm[i].img_width * 2 * 16 * ANCHOR_EN_NUM - 1;

fd_xsize[0] = pstv->inf_elm[i * RPN_LOOP_NUM + j].img_width * 2 * 16 * ANCHOR_EN_NUM - 1;

> +			fd_xsize[3] = pstv->inf_elm[i].img_width * 2 * 32 * ANCHOR_EN_NUM - 1;
> +			fd_xsize[2] = fd_xsize[3];
> +			fd_xsize[1] = fd_xsize[2];
> +		} else {
> +			conv_width = DIV_ROUND_UP(pstv->inf_elm[i].img_width, stridesize);
> +			conv_height = DIV_ROUND_UP(input_height, stridesize);
> +
> +			fd_xsize[3] = pstv->inf_elm[i].input_xsize_plus_1 - 1;
> +			fd_xsize[2] = fd_xsize[3];
> +			fd_xsize[1] = fd_xsize[2];
> +			fd_xsize[0] = fd_xsize[1];
> +		}
> +
> +		fd_cur_cfg[FD_CONV_WIDTH_MOD6] = (fd_cur_cfg[FD_CONV_WIDTH_MOD6] & 0xFF8FFFFF) |
> +						 (((conv_width % 6) << 20) & 0x00700000);
> +		fd_cur_cfg[FD_CONV_IMG_W_H] = aie_cmb_u16(conv_height, conv_width);

struct fd_config {
	...
	u32	conv_width_mod6;
	u16	conv_height;
	u16	conv_width;
	...
};

fd_cur_cfg->conv_width_mod6 = (conv_width % 6) << 20;
fd_cur_cfg->conv_width = conv_width;
fd_cur_cfg->conv_height = conv_height;

This looks more simple.

> +
> +		fd_cur_cfg[FD_IN_IMG_W_H] = aie_cmb_u16(input_height, pstv->inf_elm[i].img_width);
> +		fd_cur_cfg[FD_OUT_IMG_W_H] = aie_cmb_u16(out_height, pstv->inf_elm[i].out_width);
> +
> +		if (fd_rdma_en[i][0][0] != -1) {

This is always true, so drop this checking.

> +			for (j = 0; j < 4; j++) {
> +				fd_cur_cfg[FD_IN_X_Y_SIZE0 + 2 * j] =
> +					aie_cmb_u16(fd_xsize[j], input_height - 1);
> +				set_cmbst_cfg(fd_cur_cfg, FD_IN_STRIDE0_BUS_SIZE0 + 2 * j,
> +					      fd_xsize[j] + 1);
> +			}

struct fd_in_config {
	u16	xsize;
	u16	height;
	u16	bus_size;
	u16	stride;
};

struct fd_config {
	...
	struct fd_in_config fd_in[INPUT_WDMA_WRA_NUM];
	...
};

for (k = 0; k < INPUT_WDMA_WRA_NUM; k++) {
	fd_cur_cfg->fd_in[i].xsize = fd_xsize[k];
	fd_cur_cfg->fd_in[i].height = input_height - 1;
	fd_cur_cfg->fd_in[i].stride = fd_xsize[j] + 1;
}

This looks more readable.

> +		}
> +
> +		out_ysize_minus_1 = out_height - 1;
> +		out_ysize_minus_1_stride2 = (out_height + 1) / 2 - 1;
> +
> +		for (j = 0; j < OUTPUT_WDMA_WRA_NUM; j++) {
> +			fd_cur_set = fd_cur_cfg + 2 * j;
> +			if (!out_stride_size[i][j])
> +				continue;
> +
> +			if (out_stride_size[i][j] == 1) {
> +				fd_cur_set[FD_OUT_X_Y_SIZE0] =
> +					aie_cmb_u16(pstv->inf_elm[i].out_xsize_plus_1 - 1,
> +						    out_ysize_minus_1);
> +				set_cmbst_cfg(fd_cur_set, FD_OUT_STRIDE0_BUS_SIZE0,
> +					      pstv->inf_elm[i].out_stride);
> +			} else if (out_stride_size[i][j] == 2) {
> +				fd_cur_set[FD_OUT_X_Y_SIZE0] =
> +					aie_cmb_u16(pstv->inf_elm[i].out_xsize_plus_1_stride2 - 1,
> +						    out_ysize_minus_1_stride2);
> +				set_cmbst_cfg(fd_cur_set, FD_OUT_STRIDE0_BUS_SIZE0,
> +					      pstv->inf_elm[i].out_stride_stride2);
> +			}
> +		}

static const unsigned int out_stride_size[RPN_LOOP_NUM][OUTPUT_WDMA_WRA_NUM] = {
	{ 1, 0, 0, 0 }, { 1, 0, 2, 0 }, { 1, 0, 2, 0 }, { 1, 0, 0, 0 },
	{ 1, 1, 2, 2 }, { 1, 1, 2, 2 }, { 1, 0, 0, 0 }, { 1, 0, 2, 0 },
	{ 1, 1, 0, 0 }, { 1, 0, 0, 0 }, { 1, 0, 2, 0 }, { 1, 1, 0, 0 },
	{ 1, 0, 0, 0 }, { 1, 0, 0, 0 }, { 1, 0, 0, 0 }, { 1, 0, 0, 0 },
	{ 1, 0, 0, 0 }, { 1, 0, 0, 0 }, { 1, 1, 0, 0 }, { 1, 1, 0, 0 },
	{ 1, 1, 0, 0 }, { 1, 0, 0, 0 }, { 1, 1, 1, 1 }, { 1, 1, 1, 1 },
	{ 1, 1, 0, 0 }, { 1, 1, 0, 0 }, { 1, 1, 0, 0 }, { 1, 0, 0, 0 },
	{ 3, 0, 0, 0 }
};

struct fd_out_config {
	u16	xsize;
	u16	ysize_minus_1;
	u16	bus_size;
	u16	stride;
};

struct fd_config {
	...
	struct fd_out_config fd_out[OUTPUT_WDMA_WRA_NUM];
	...
};

for (k = 0; k < OUTPUT_WDMA_WRA_NUM; k++) {
	if (!out_stride_size[j][k])
		continue;

	if (out_stride_size[j][k] == 1) {
		fd_cur_cfg->fd_out[j].xsize = pstv->inf_elm[i].out_xsize_plus_1 - 1;
		fd_cur_cfg->fd_out[j].ysize_minus_1 = out_ysize_minus_1;
		fd_cur_cfg->fd_out[j].stride = pstv->inf_elm[i].out_stride;
	} else if (out_stride_size[j][k] == 2) {
		fd_cur_cfg->fd_out[j].xsize = pstv->inf_elm[i].out_xsize_plus_1_stride2 - 1;
		fd_cur_cfg->fd_out[j].ysize_minus_1 = out_ysize_minus_1_stride2;
		fd_cur_cfg->fd_out[j].stride = pstv->inf_elm[i].out_stride_stride2;
	}
}

This looks more readable.

> +
> +		if (i == RPNX_LOOP_NUM(0) || i == RPNX_LOOP_NUM(1) || i == RPNX_LOOP_NUM(2))

if (j == (RPN_LOOP_NUM - 1))

> +			set_cmb_cfg(fd_cur_cfg, FD_RPN_SET, fd->base_para->rpn_anchor_thrd);
> +
> +		if (i == RPNX_LOOP_NUM(0)) {
> +			cal_x = ((sr_crp_w << 10) * 100 /
> +				 (int)fd->base_para->pyramid_rect.width) >> 10;
> +			cal_y = cal_x * 512 / 100;
> +			fd_cur_cfg[FD_IMAGE_COORD] = (fd_cur_cfg[FD_IMAGE_COORD] & 0xF) |
> +						     ((cal_y << 4) & 0x7FFF0);
> +			fd_cur_cfg[FD_IMAGE_COORD_XY_OFST] = 0;
> +			if (aie_cfg->en_roi) {
> +				fd_cur_cfg[FD_IMAGE_COORD_XY_OFST] =
> +					(aie_cfg->src_roi.x1 - aie_cfg->src_padding.left) |
> +					(aie_cfg->src_roi.y1 - aie_cfg->src_padding.up) << 16;
> +			}
> +		} else if (i == RPNX_LOOP_NUM(1)) {
> +			cal_x = ((sr_crp_w << 10) * 100 /
> +				(int)fd->base_para->pyramid_rect.width) >> 10;
> +			cal_y = cal_x * 2 * 512 / 100;
> +			fd_cur_cfg[FD_IMAGE_COORD] = (fd_cur_cfg[FD_IMAGE_COORD] & 0xF) |
> +						     ((cal_y << 4) & 0x7FFF0);
> +			fd_cur_cfg[FD_IMAGE_COORD_XY_OFST] = 0;
> +			if (aie_cfg->en_roi) {
> +				fd_cur_cfg[FD_IMAGE_COORD_XY_OFST] =
> +					(aie_cfg->src_roi.x1 - aie_cfg->src_padding.left) |
> +					(aie_cfg->src_roi.y1 - aie_cfg->src_padding.up) << 16;
> +			}
> +		} else if (i == RPNX_LOOP_NUM(2)) {
> +			cal_x = ((sr_crp_w << 10) * 100 /
> +				(int)fd->base_para->pyramid_rect.width) >> 10;
> +			cal_y = cal_x * 4 * 512 / 100;
> +			fd_cur_cfg[FD_IMAGE_COORD] = (fd_cur_cfg[FD_IMAGE_COORD] & 0xF) |
> +						     ((cal_y << 4) & 0x7FFF0);
> +			fd_cur_cfg[FD_IMAGE_COORD_XY_OFST] = 0;
> +			if (aie_cfg->en_roi) {
> +				fd_cur_cfg[FD_IMAGE_COORD_XY_OFST] =
> +					(aie_cfg->src_roi.x1 - aie_cfg->src_padding.left) |
> +					(aie_cfg->src_roi.y1 - aie_cfg->src_padding.up) << 16;
> +			}
> +		}

struct fd_config {
	...
	u8	img_coord_x:4;
	u8	img_coord_y:4;
	u32	img_coord_reserved:24;
	u16	img_coord_x_ofst;
	u16	img_coord_y_ofst;
	...
};

if (j == (RPN_LOOP_NUM - 1)) {
	cal_x = ((sr_crp_w << 10) * 100 /
		 (int)fd->base_para->pyramid_rect.width) >> 10;
	cal_y = cal_x * (1 << (2 - i)) * 512 / 100;
	fd_cur_cfg->img_coord_x = fd_cur_cfg[FD_IMAGE_COORD];
	fd_cur_cfg->img_coord_y = cal_y;
	fd_cur_cfg->img_coord_x_ofst = 0;
	fd_cur_cfg->img_coord_y_ofst = 0;

	if (aie_cfg->en_roi) {
		fd_cur_cfg->img_coord_x_ofst = aie_cfg->src_roi.x1 - aie_cfg->src_padding.left;
		fd_cur_cfg->img_coord_y_ofst = aie_cfg->src_roi.y1 - aie_cfg->src_padding.up;
	}
}

This would shrink the code size and looks readable.

> +
> +		/* IN_FM_BASE_ADR */
> +		if (i == 0) {
> +			fd_cur_cfg[FD_IN_0] = (u32)(fd->base_para->rs_pym_rst_pa[2][0]);
> +			fd_cur_cfg[FD_IN_1] = (u32)(fd->base_para->rs_pym_rst_pa[2][1]);
> +			fd_cur_cfg[FD_IN_2] = (u32)(fd->base_para->rs_pym_rst_pa[2][2]);
> +		} else if (i == (RPNX_LOOP_NUM(2) + 1)) {
> +			fd_cur_cfg[FD_IN_0] = (u32)(fd->base_para->rs_pym_rst_pa[1][0]);
> +			fd_cur_cfg[FD_IN_1] = (u32)(fd->base_para->rs_pym_rst_pa[1][1]);
> +			fd_cur_cfg[FD_IN_2] = (u32)(fd->base_para->rs_pym_rst_pa[1][2]);
> +		} else if (i == (RPNX_LOOP_NUM(1) + 1)) {
> +			fd_cur_cfg[FD_IN_0] = (u32)(fd->base_para->rs_pym_rst_pa[0][0]);
> +			fd_cur_cfg[FD_IN_1] = (u32)(fd->base_para->rs_pym_rst_pa[0][1]);
> +			fd_cur_cfg[FD_IN_2] = (u32)(fd->base_para->rs_pym_rst_pa[0][2]);
> +		} else {
> +			for (j = 0; j < INPUT_WDMA_WRA_NUM; j++) {
> +				if (fd_rdma_en[i][j][0] != -1) {
> +					uloop = fd_rdma_en[i][j][0];
> +					uch = fd_rdma_en[i][j][1];
> +					fd_cur_cfg[FD_IN_0 + j] =
> +						(u32)(fd->dma_para->fd_out_hw_pa[uloop][uch]);
> +				}
> +			}
> +		}

static const signed int fd_rdma_en[RPN_LOOP_NUM][INPUT_WDMA_WRA_NUM][2] = {
	{ { 99, 99 }, { 99, 99 }, { 99, 99 }, { -1, -1 } },
	{ { 0, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
	{ { 1, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
	{ { 1, 0 }, { 2, 0 }, { -1, -1 }, { -1, -1 } },
	{ { 3, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
	{ { 1, 2 }, { 2, 2 }, { 4, 2 }, { 4, 3 } },
	{ { 5, 0 }, { 5, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 6, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
	{ { 5, 0 }, { 5, 1 }, { 7, 0 }, { -1, -1 } },
	{ { 8, 0 }, { 8, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 9, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
	{ { 5, 2 }, { 5, 3 }, { 7, 2 }, { 10, 2 } },
	{ { 11, 0 }, { 11, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 12, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
	{ { 13, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
	{ { 11, 0 }, { 11, 1 }, { 14, 0 }, { -1, -1 } },
	{ { 15, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
	{ { 16, 0 }, { -1, -1 }, { -1, -1 }, { -1, -1 } },
	{ { 11, 0 }, { 11, 1 }, { 14, 0 }, { 17, 0 } },
	{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 18, 0 }, { 18, 1 }, { -1, -1 }, { -1, -1 } },
	{ { 19, 0 }, { 22, 0 }, { 22, 1 }, { 25, 0 } }
};

struct fd_config {
	...
	u32 in[INPUT_WDMA_WRA_NUM];
	...
};

if (j == 0) {
	fd_cur_cfg->in_0 = fd->base_para->rs_pym_rst_pa[2 - i][0];
	fd_cur_cfg->in_1 = fd->base_para->rs_pym_rst_pa[2 - i][1];
	fd_cur_cfg->in_2 = fd->base_para->rs_pym_rst_pa[2 - i][2];
} else {
	for (k = 0; k < INPUT_WDMA_WRA_NUM; k++) {
		if (fd_rdma_en[j][k][0] != -1) {
			uloop = fd_rdma_en[j][k][0] + i * RPN_LOOP_NUM;
			uch = fd_rdma_en[j][k][1];
			fd_cur_cfg->in[k] =
				fd->dma_para->fd_out_hw_pa[uloop][uch];
		}
	}
}

This looks more simple.

> +
> +		/* OUT_FM_BASE_ADR */
> +		for (j = 0; j < OUTPUT_WDMA_WRA_NUM; j++) {
> +			if (out_stride_size[i][j])
> +				fd_cur_cfg[FD_OUT_0 + j] =
> +					(u32)(fd->dma_para->fd_out_hw_pa[i][j]);
> +		}
> +
> +		/* KERNEL_BASE_ADR */
> +		for (j = 0; j < KERNEL_RDMA_RA_NUM; j++) {
> +			size = get_fd_ker_rdma_size(i, j);
> +			if (size)
> +				fd_cur_cfg[FD_KERNEL_0 + j] =
> +					(u32)(fd->dma_para->fd_kernel_pa[i][j]);
> +		}
> +
> +		fd_cur_cfg[FD_CON_IN_BA_MSB] = (u32)0x02020202;

It's not necessary to case to u32.

> +		fd_cur_cfg[FD_CON_OUT_BA_MSB] = (u32)0x02020202;
> +		fd_cur_cfg[FD_CON_KERNEL_BA_MSB] = (u32)0x00000202;
> +	}
> +
> +	return 0;
> +}
> +
> +static int aie_config_attr_network(struct mtk_aie_dev *fd,
> +				   struct aie_enq_info *aie_cfg)
> +{
> +	bool is_regression_loop;
> +	void *fd_cfg;
> +	u32 *fd_cur_cfg;
> +	u16 fd_input_ht, fd_output_ht;
> +	u16 fd_out_y[4];
> +	u8 i, j;
> +	u8 uloop, uch, uidx;
> +	u16 pyramid0_out_w, pyramid0_out_h;
> +	int fd_conv_ht;
> +	u16 sr_crp_w, sr_crp_h;
> +
> +	sr_crp_w = fd->attr_para->crop_width[fd->attr_para->w_idx];
> +	sr_crp_h = fd->attr_para->crop_height[fd->attr_para->w_idx];
> +
> +	pyramid0_out_w = ATTR_MODE_PYRAMID_WIDTH;
> +	pyramid0_out_h = pyramid0_out_w * sr_crp_h / sr_crp_w;
> +
> +	fd_cfg = fd->base_para->attr_fd_cfg_va[fd->attr_para->w_idx];
> +
> +	for (i = 0; i < ATTR_LOOP_NUM; i++) {
> +		fd_cur_cfg = (u32 *)fd_cfg + fd->variant->fd_cfg_size * i;
> +		fd_cur_cfg[FD_INPUT_ROTATE] =
> +			(fd_cur_cfg[FD_INPUT_ROTATE] & 0xFFFF0FFF) |
> +			((aie_cfg->rotate_degree << 12) & 0x3000);
> +		if (i == 0)
> +			fd_input_ht = pyramid0_out_h;
> +		else
> +			if (attr_out_stride2_as_in[i] == 0)
> +				fd_input_ht = fd_output_ht;
> +			else if (attr_out_stride2_as_in[i] == 1)
> +				fd_input_ht = (fd_output_ht + 1) / 2;
> +
> +		fd_output_ht = DIV_ROUND_UP(fd_input_ht, ATTR_FD_STRIDE(i) +
> +					    2 * ATTR_FD_MAXPOOL(i));
> +		fd_conv_ht = DIV_ROUND_UP(fd_input_ht, ATTR_FD_STRIDE(i));
> +
> +		fd_cur_cfg[FD_CONV_IMG_W_H] =
> +			(fd_cur_cfg[FD_CONV_IMG_W_H] & 0xFFFF0000) |
> +			(fd_conv_ht & 0xFFFF);
> +		fd_cur_cfg[FD_IN_IMG_W_H] =
> +			(fd_cur_cfg[FD_IN_IMG_W_H] & 0xFFFF0000) |
> +			(fd_input_ht & 0xFFFF);
> +		fd_cur_cfg[FD_OUT_IMG_W_H] =
> +			(fd_cur_cfg[FD_OUT_IMG_W_H] & 0xFFFF0000) |
> +			(fd_output_ht & 0xFFFF);


I think you could define a structure and its member has different type,

struct fd_cur_config {
	...
	u16	in_w;
	u16	in_h;
	u16	out_w;
	u16	out_h;
	...
};

struct fd_cur_config *fd_cur_cfg;

fd_cur_cfg->in_w = fd_input_ht;
fd_cur_cfg->out_w = fd_output_ht;

This look more readable.

> +		set_cmb_cfg(fd_cur_cfg, FD_IN_X_Y_SIZE0, fd_input_ht - 1);
> +		set_cmb_cfg(fd_cur_cfg, FD_IN_X_Y_SIZE1, fd_input_ht - 1);
> +		set_cmb_cfg(fd_cur_cfg, FD_IN_X_Y_SIZE2, fd_input_ht - 1);
> +		set_cmb_cfg(fd_cur_cfg, FD_IN_X_Y_SIZE3, fd_input_ht - 1);
> +
> +		is_regression_loop = (i == AGE_OUT_RGS || i == GENDER_OUT_RGS ||
> +					      i == INDIAN_OUT_RGS || i == ETHNICITY_OUT_RGS);
> +
> +		if (is_regression_loop) {
> +			fd_out_y[0] = 0;
> +			fd_out_y[1] = 0;
> +			fd_out_y[2] = 0;
> +			fd_out_y[3] = 0;
> +		} else {
> +			fd_out_y[0] = fd_output_ht - 1;
> +			fd_out_y[1] = fd_output_ht - 1;
> +			if (attr_out_2size[i] == 0) {
> +				fd_out_y[2] = fd_output_ht - 1;
> +				fd_out_y[3] = fd_output_ht - 1;
> +			} else {
> +				fd_out_y[2] = (fd_output_ht + 1) / 2 - 1;
> +				fd_out_y[3] = (fd_output_ht + 1) / 2 - 1;
> +			}
> +		}
> +
> +		for (j = 0; j < 4; j++)
> +			set_cmb_cfg(fd_cur_cfg, FD_OUT_X_Y_SIZE0 + 2 * j, fd_out_y[j]);
> +
> +		/* IN_FM_BASE_ADR */
> +		if (i == 0) {
> +			fd_cur_cfg[FD_IN_0] = (u32)(fd->base_para->rs_pym_rst_pa[0][0]);
> +			fd_cur_cfg[FD_IN_1] = (u32)(fd->base_para->rs_pym_rst_pa[0][1]);
> +			fd_cur_cfg[FD_IN_2] = (u32)(fd->base_para->rs_pym_rst_pa[0][2]);
> +		} else {
> +			for (j = 0; j < INPUT_WDMA_WRA_NUM; j++) {
> +				if (attr_rdma_en[i][j][0] != -1) {
> +					uloop = attr_rdma_en[i][j][0];
> +					uch = attr_rdma_en[i][j][1];
> +					fd_cur_cfg[FD_IN_0 + j] =
> +						(u32)(fd->dma_para->attr_out_hw_pa[uloop][uch]);
> +				}
> +			}
> +		}
> +
> +		/* OUT_FM_BASE_ADR */
> +		for (j = 0; j < OUTPUT_WDMA_WRA_NUM; j++) {
> +			if (attr_wdma_en[i][j]) {
> +				uidx = fd->attr_para->w_idx;
> +				if (i == AGE_OUT_RGS && j == 0)
> +					fd_cur_cfg[FD_OUT_0 + j] =
> +						(u32)(fd->dma_para->age_out_hw_pa[uidx]);
> +				else if (i == GENDER_OUT_RGS && j == 0)
> +					fd_cur_cfg[FD_OUT_0 + j] =
> +						(u32)(fd->dma_para->gender_out_hw_pa[uidx]);
> +				else if (i == INDIAN_OUT_RGS && j == 0)
> +					fd_cur_cfg[FD_OUT_0 + j] =
> +						(u32)(fd->dma_para->is_indian_out_hw_pa[uidx]);
> +				else if (i == ETHNICITY_OUT_RGS && j == 0)
> +					fd_cur_cfg[FD_OUT_0 + j] =
> +						(u32)(fd->dma_para->ethnicity_out_hw_pa[uidx]);
> +				else
> +					fd_cur_cfg[FD_OUT_0 + j] =
> +						(u32)(fd->dma_para->attr_out_hw_pa[i][j]);
> +			}
> +		}
> +
> +		/* KERNEL_BASE_ADR */
> +		for (j = 0; j < KERNEL_RDMA_RA_NUM; j++) {
> +			fd_cur_cfg[FD_KERNEL_0 + j] =
> +				(u32)(fd->dma_para->attr_kernel_pa[i][j]);
> +		}
> +
> +		fd_cur_cfg[FD_CON_IN_BA_MSB] = (u32)0x02020202;
> +		fd_cur_cfg[FD_CON_OUT_BA_MSB] = (u32)0x02020202;
> +		fd_cur_cfg[FD_CON_KERNEL_BA_MSB] = (u32)0x00000202;
> +	}
> +	return 0;
> +}
> +

[snip]

> +
> +static void aie_execute_attribute_detection(struct mtk_aie_dev *fd,
> +					    struct aie_enq_info *aie_cfg)
> +{
> +	writel(0x0, fd->fd_base + AIE_START_REG);
> +	writel(0x00000101, fd->fd_base + AIE_ENABLE_REG);
> +	writel(0x00001A00, fd->fd_base + AIE_LOOP_REG);
> +	writel(0x1, fd->fd_base + AIE_INT_EN_REG);
> +	writel(fd->reg_cfg.rs_adr, fd->fd_base + AIE_RS_CON_BASE_ADR_REG);

You does not assign fd->reg_cfg.rs_adr in attribute mode, why do you set it to register?

> +	writel(fd->reg_cfg.fd_adr, fd->fd_base + AIE_FD_CON_BASE_ADR_REG);
> +	writel(fd->reg_cfg.yuv2rgb_adr, fd->fd_base + AIE_YUV2RGB_CON_BASE_ADR_REG);
> +	writel(0x00000002, fd->fd_base + AIE_YUV2RGB_CON_BASE_ADR_MSB);
> +	writel(0x00000002, fd->fd_base + AIE_RS_CON_BASE_ADR_MSB);
> +	writel(0x00000002, fd->fd_base + AIE_FD_CON_BASE_ADR_MSB);
> +	writel(0x1, fd->fd_base + AIE_START_REG);
> +}

You could merge aie_execute_face_detection() and aie_execute_attribute_detection() into one function:

aie_execute_face_attr_detection(struct mtk_aie_dev *fd,
				u32 nr_pyramid)
{
	writel(0x0, fd->fd_base + AIE_START_REG);
	if (nr_pyramid) {
		writel(0x00000111, fd->fd_base + AIE_ENABLE_REG);
		loop_num = FD_LOOP_NUM / 3 * nr_pyramid;
		loop_reg_val = (loop_num << 8) | (nr_pyramid - 1);
		writel(loop_reg_val, fd->fd_base + AIE_LOOP_REG);
	} else {
		writel(0x00000101, fd->fd_base + AIE_ENABLE_REG);
		writel(0x00001A00, fd->fd_base + AIE_LOOP_REG);
	}
	writel(0x1, fd->fd_base + AIE_INT_EN_REG);
	writel(fd->reg_cfg.rs_adr, fd->fd_base + AIE_RS_CON_BASE_ADR_REG);
	writel(fd->reg_cfg.fd_adr, fd->fd_base + AIE_FD_CON_BASE_ADR_REG);
	writel(fd->reg_cfg.yuv2rgb_adr, fd->fd_base + AIE_YUV2RGB_CON_BASE_ADR_REG);
	writel(0x00000002, fd->fd_base + AIE_YUV2RGB_CON_BASE_ADR_MSB);
	writel(0x00000002, fd->fd_base + AIE_RS_CON_BASE_ADR_MSB);
	writel(0x00000002, fd->fd_base + AIE_FD_CON_BASE_ADR_MSB);
	writel(0x1, fd->fd_base + AIE_START_REG);
}

For attribute mode, nr_pyramid is 0.

> +
> +static void aie_execute_fld_detection(struct mtk_aie_dev *fd,
> +				      struct aie_enq_info *aie_cfg)
> +{
> +	unsigned int i;
> +
> +	writel(0x10, fd->fd_base + AIE_START_REG);
> +	writel(0x00011111, fd->fd_base + AIE_DMA_CTL_REG);
> +	writel(0x01111111, fd->fd_base + FLD_EN);
> +	writel(0x1, fd->fd_base + AIE_INT_EN_REG);
> +	for (i = 0; i < aie_cfg->fld_face_num; i++) {
> +		writel(aie_cfg->src_img_addr, fd->fd_base + FLD_BASE_ADDR_FACE_0 + i * 0x4);
> +		writel(aie_cfg->fld_input[i].fld_in_crop_x1 << 16 |
> +		       aie_cfg->fld_input[i].fld_in_crop_y1,
> +		       fd->fd_base + fld_face_info_0[i]);
> +		writel(aie_cfg->fld_input[i].fld_in_crop_x2 << 16 |
> +		       aie_cfg->fld_input[i].fld_in_crop_y2,
> +		       fd->fd_base + FLD_FACE_INFO(i, 1));
> +		writel(aie_cfg->fld_input[i].fld_in_rip << 4 |
> +		       aie_cfg->fld_input[i].fld_in_rop,
> +		       fd->fd_base + FLD_FACE_INFO(i, 2));
> +	}
> +
> +	writel(aie_cfg->fld_face_num << 28 | FLD_FOREST << 16 |
> +	       FLD_POINT, fd->fd_base + FLD_MODEL_PARA1);
> +	writel(13 << 16 | 0xfe9, fd->fd_base + FLD_MODEL_PARA14);
> +	writel(aie_cfg->src_img_width << 16 | aie_cfg->src_img_height,
> +	       fd->fd_base + FLD_SRC_WD_HT);
> +
> +	/*input settings*/
> +	writel(0x007c003f, fd->fd_base + FLD_PL_IN_SIZE_0);
> +	writel(0x0040000f, fd->fd_base + FLD_PL_IN_STRIDE_0);
> +	writel(0x007c003f, fd->fd_base + FLD_PL_IN_SIZE_1);
> +	writel(0x0040000f, fd->fd_base + FLD_PL_IN_STRIDE_1);
> +	writel(0x0016003f, fd->fd_base + FLD_PL_IN_SIZE_2_0);
> +	writel(0x0040000f, fd->fd_base + FLD_PL_IN_STRIDE_2_0);
> +	writel(0x0013003f, fd->fd_base + FLD_PL_IN_SIZE_2_1);
> +	writel(0x0040000f, fd->fd_base + FLD_PL_IN_STRIDE_2_1);
> +	writel(0x0013003f, fd->fd_base + FLD_PL_IN_SIZE_2_2);
> +	writel(0x0040000f, fd->fd_base + FLD_PL_IN_STRIDE_2_2);
> +	writel(0x00a6001f, fd->fd_base + FLD_PL_IN_SIZE_3);
> +	writel(0x0020000f, fd->fd_base + FLD_PL_IN_STRIDE_3);
> +
> +	/*output setting*/
> +	writel((2400 * aie_cfg->fld_face_num - 1) << 16 | 127,
> +	       fd->fd_base + FLD_SH_IN_SIZE_0);
> +	writel(0x0010000f, fd->fd_base + FLD_SH_IN_STRIDE_0);
> +	writel(fd->fld_para->fld_output_pa[0],
> +	       fd->fd_base + FLD_TR_OUT_BASE_ADDR_0);

fld_output_pa[] is used in this function and you just use fld_output_pa[0],
so it's not necessary to use an array to store fld_output_pa.
In aie_arrange_fld_buf(),

fd->fld_para->fld_output_pa = fd->fd_fld_out_hw.pa;

And here,

writel(fd->fld_para->fld_output_pa, fd->fd_base + FLD_TR_OUT_BASE_ADDR_0);

> +	writel((aie_cfg->fld_face_num - 1) << 16 | 0x6f,
> +	       fd->fd_base + FLD_TR_OUT_SIZE_0);
> +	writel(0x0070000f, fd->fd_base + FLD_TR_OUT_STRIDE_0);
> +	writel(fd->fld_para->fld_output_pa[0],
> +	       fd->fd_base + FLD_PP_OUT_BASE_ADDR_0);

Ditto.

> +	writel((aie_cfg->fld_face_num - 1) << 16 | 0x6f,
> +	       fd->fd_base + FLD_PP_OUT_SIZE_0);
> +	writel(0x0070000f, fd->fd_base + FLD_PP_OUT_STRIDE_0);
> +
> +	/*cv score*/
> +	writel(0x00000001, fd->fd_base + FLD_BS_BIAS);
> +	writel(0x0000b835, fd->fd_base + FLD_CV_FM_RANGE_0);
> +	writel(0xffff5cba, fd->fd_base + FLD_CV_FM_RANGE_1);
> +	writel(0x00005ed5, fd->fd_base + FLD_CV_PM_RANGE_0);
> +	writel(0xffff910d, fd->fd_base + FLD_CV_PM_RANGE_1);
> +	writel(0x0000031e, fd->fd_base + FLD_BS_RANGE_0);
> +	writel(0xfffffcae, fd->fd_base + FLD_BS_RANGE_1);
> +
> +	/* 6 steps */
> +	writel(fd->fld_para->fld_step_pa[FLD_STEP_BLINK][14],
> +	       fd->fd_base + FLD_BS_IN_BASE_ADDR_14);
> +
> +	for (i = 0; i < 15; i++) {
> +		writel(fd->fld_para->fld_step_pa[FLD_STEP_CV][i],
> +		       fd->fd_base + FLD_PL_IN_BASE_ADDR_2_(i));
> +
> +		writel(fd->fld_para->fld_step_pa[FLD_STEP_FP][i],
> +		       fd->fd_base + FLD_PL_IN_BASE_ADDR_3_(i));
> +
> +		writel(fd->fld_para->fld_step_pa[FLD_STEP_LEAF][i],
> +		       fd->fd_base + FLD_SH_IN_BASE_ADDR_(i));
> +
> +		writel(fd->fld_para->fld_step_pa[FLD_STEP_KM02][i],
> +		       fd->fd_base + FLD_PL_IN_BASE_ADDR_0_(i));
> +
> +		writel(fd->fld_para->fld_step_pa[FLD_STEP_KM13][i],
> +		       fd->fd_base + FLD_PL_IN_BASE_ADDR_1_(i));
> +	}
> +
> +	writel(0x22222222, fd->fd_base + FLD_PL_IN_BASE_ADDR_0_0_7_MSB);
> +	writel(0x02222222, fd->fd_base + FLD_PL_IN_BASE_ADDR_0_8_15_MSB);
> +
> +	writel(0x22222222, fd->fd_base + FLD_PL_IN_BASE_ADDR_1_0_7_MSB);
> +	writel(0x02222222, fd->fd_base + FLD_PL_IN_BASE_ADDR_1_8_15_MSB);
> +
> +	writel(0x22222222, fd->fd_base + FLD_PL_IN_BASE_ADDR_2_0_7_MSB);
> +	writel(0x02222222, fd->fd_base + FLD_PL_IN_BASE_ADDR_2_8_15_MSB);
> +
> +	writel(0x22222222, fd->fd_base + FLD_PL_IN_BASE_ADDR_3_0_7_MSB);
> +	writel(0x02222222, fd->fd_base + FLD_PL_IN_BASE_ADDR_3_8_15_MSB);
> +
> +	writel(0x22222222, fd->fd_base + FLD_SH_IN_BASE_ADDR_0_7_MSB);
> +	writel(0x02222222, fd->fd_base + FLD_SH_IN_BASE_ADDR_8_15_MSB);
> +
> +	writel(0x02000000, fd->fd_base + FLD_BS_IN_BASE_ADDR_8_15_MSB);
> +
> +	writel(0x22222222, fd->fd_base + FLD_BASE_ADDR_FACE_0_7_MSB);
> +	writel(0x02222222, fd->fd_base + FLD_BASE_ADDR_FACE_8_14_MSB);
> +	writel(0x00000002, fd->fd_base + FLD_TR_OUT_BASE_ADDR_0_MSB);
> +	writel(0x00000002, fd->fd_base + FLD_PP_OUT_BASE_ADDR_0_MSB);
> +
> +	/* fld mode + trigger start */
> +	writel(0x11, fd->fd_base + AIE_START_REG);
> +}
> +

[snip]

> +
> +/* return aie_cfg to user space */
> +void aie_get_fd_result(struct mtk_aie_dev *fd, struct aie_enq_info *aie_cfg)
> +{
> +	u32 fd_result_hw, fd_result_1_hw, fd_total_num;
> +	struct aie_enq_info *tmp_aie_cfg;
> +	void *fd_pym_result[PYM_NUM];
> +	u32 fd_pyramid_num[PYM_NUM];
> +	signed short landmark;
> +	unsigned int *pto12;
> +	struct fd_ret *prst;
> +	unsigned int i, j;
> +
> +	aie_cfg->sel_mode = fd->base_para->sel_mode;
> +	aie_cfg->rotate_degree = fd->base_para->rotate_degree;
> +	aie_cfg->src_img_addr = fd->base_para->src_img_addr;
> +	aie_cfg->src_img_addr_uv = fd->base_para->src_img_addr_uv;
> +	aie_cfg->src_img_width = fd->base_para->img_rect.width;
> +	aie_cfg->src_img_height = fd->base_para->img_rect.height;
> +	aie_cfg->src_img_fmt = fd->base_para->src_img_fmt;

User space know all these information, so it's not necessary to set these information to output buffer.
Drop these.

> +
> +	aie_cfg->irq_status = readl(fd->fd_base + AIE_INT_EN_REG);

User space is not necessary to know irq_status.
Drop this.

> +
> +	fd_result_hw = fd->reg_cfg.hw_result;
> +	fd_result_1_hw = fd->reg_cfg.hw_result1;
> +	fd_total_num = fd_result_hw & 0xFFF;
> +	fd_pyramid_num[0] = (fd_result_hw & 0xFFF0000) >> 16;
> +	fd_pyramid_num[1] = fd_result_1_hw & 0xFFF;
> +	fd_pyramid_num[2] = (fd_result_1_hw & 0xFFF0000) >> 16;
> +
> +	if (fd_total_num == 0)
> +		goto nothing_out;
> +
> +	tmp_aie_cfg =  aie_cfg;

Drop tmp_aie_cfg and use aie_cfg directly.

> +
> +	tmp_aie_cfg->fd_out.fd_total_num = fd_total_num;
> +	tmp_aie_cfg->fd_out.fd_pyramid0_num = fd_pyramid_num[0];
> +	tmp_aie_cfg->fd_out.fd_pyramid1_num = fd_pyramid_num[1];
> +	tmp_aie_cfg->fd_out.fd_pyramid2_num = fd_pyramid_num[2];
> +
> +	switch (tmp_aie_cfg->number_of_pyramid) {
> +	case 1:
> +		fd_pym_result[2] = fd->dma_para->fd_out_hw_va[RPNX_LOOP_NUM(0)][0];

Why use index 2?
Use index 0 is more trivial.
Add comment to describe why use such weird index.

> +		break;
> +	case 2:
> +		fd_pym_result[1] = fd->dma_para->fd_out_hw_va[RPNX_LOOP_NUM(0)][0];
> +		fd_pym_result[2] = fd->dma_para->fd_out_hw_va[RPNX_LOOP_NUM(1)][0];
> +		break;
> +	case 3:
> +		fd_pym_result[0] = fd->dma_para->fd_out_hw_va[RPNX_LOOP_NUM(0)][0];
> +		fd_pym_result[1] = fd->dma_para->fd_out_hw_va[RPNX_LOOP_NUM(1)][0];
> +		fd_pym_result[2] = fd->dma_para->fd_out_hw_va[RPNX_LOOP_NUM(2)][0];
> +		break;
> +	default:
> +		dev_err(fd->dev, "Wrong number_of_pyramid\n");
> +		goto nothing_out;
> +	}
> +
> +	for (i = 0; i < 3; i++) {
> +		for (j = 0; j < fd_pyramid_num[i]; j++) {
> +			if (i == 0)
> +				prst = &tmp_aie_cfg->fd_out.pyramid0_result;
> +			else if (i == 1)
> +				prst = &tmp_aie_cfg->fd_out.pyramid1_result;
> +			else if (i == 2)
> +				prst = &tmp_aie_cfg->fd_out.pyramid2_result;

If you define pyramid0_result to pyramid_result[0], then you could simplify this as

prst = &tmp_aie_cfg->fd_out.pyramid_result[i];

In addition, this statement is just related to variable i, not related to variable j,
so move this statement before the for-loop for j.

> +
> +			pto12 = (unsigned int *)fd_pym_result[i] + 12 * j;
> +
> +			prst->anchor_x0[j] = aie_get_lo16(*(pto12 + 0));
> +			prst->anchor_y0[j] = aie_get_hi16(*(pto12 + 0));
> +			prst->anchor_x1[j] = aie_get_lo16(*(pto12 + 1));
> +			prst->anchor_y1[j] = aie_get_hi16(*(pto12 + 1));
> +
> +			if (prst->anchor_x1[j] == 0 ||
> +			    prst->anchor_y1[j] == 0) {
> +				dev_err(fd->dev,
> +					"wrong coordinate: i=%d j=%d M:%d %d %d %d\n", i, j,
> +					prst->anchor_x0[j],
> +					prst->anchor_x1[j],
> +					prst->anchor_y0[j],
> +					prst->anchor_y1[j]
> +				);
> +				goto nothing_out;
> +			}
> +
> +			/* ROP result at 1st run */
> +			landmark = (*(pto12 + 2) & 0x3FF);
> +			prst->rop_landmark_score0[j] = aie_refine_s16_value(landmark);
> +			landmark = ((*(pto12 + 2) & 0xFFC00) >> 10);
> +			prst->rop_landmark_score1[j] = aie_refine_s16_value(landmark);
> +			landmark = ((*(pto12 + 2) & 0x3FF00000) >> 20);
> +			prst->rop_landmark_score2[j] = aie_refine_s16_value(landmark);
> +
> +			prst->anchor_score[j] = aie_refine_s16_value(*(pto12 + 9) & 0x3FF);
> +
> +			/* RIP result at 1st run */
> +			landmark = ((*(pto12 + 9) & 0xFFC00) >> 10);
> +			prst->rip_landmark_score0[j] = aie_refine_s16_value(landmark);
> +			landmark = ((*(pto12 + 9) & 0x3FF00000) >> 20);
> +			prst->rip_landmark_score1[j] = aie_refine_s16_value(landmark);
> +			landmark = ((*(pto12 + 9) & 0xC0000000) >> 30) |
> +				   ((*(pto12 + 10) & 0xFF) << 2);
> +			prst->rip_landmark_score2[j] = aie_refine_s16_value(landmark);
> +			landmark = ((*(pto12 + 10) & 0x3FF00) >> 8);
> +			prst->rip_landmark_score3[j] = aie_refine_s16_value(landmark);
> +			landmark = ((*(pto12 + 10) & 0xFFC0000) >> 18);
> +			prst->rip_landmark_score4[j] = aie_refine_s16_value(landmark);
> +			landmark = ((*(pto12 + 10) & 0xF0000000) >> 28) |
> +				   ((*(pto12 + 11) & 0x3F) << 4);
> +			prst->rip_landmark_score5[j] = aie_refine_s16_value(landmark);
> +			landmark = ((*(pto12 + 11) & 0xFFC0) >> 6);
> +			prst->rip_landmark_score6[j] = aie_refine_s16_value(landmark);
> +			prst->face_result_index[j] = ((*(pto12 + 11) & 0xFFF0000) >> 16);
> +			prst->anchor_index[j] = ((*(pto12 + 11) & 0x70000000) >> 28);
> +
> +			prst->fd_partial_result = fd_pyramid_num[i];
> +		}
> +	}
> +	return;
> +nothing_out:
> +	// Ensure that user mode does not receive an inappropriate result structure

Use c style instead of c++ style comment.
Run checkpatch before you send out patches.

> +	memset(&aie_cfg->fd_out, 0, sizeof(struct fd_result));
> +}
> +
> +void aie_get_attr_result(struct mtk_aie_dev *fd, struct aie_enq_info *aie_cfg)
> +{
> +	u32 *attr_ethnicity_result, *attr_gender_result;
> +	u32 *attr_age_result, *attr_is_indian_result;
> +
> +	aie_cfg->sel_mode = fd->attr_para->sel_mode[fd->attr_para->r_idx];
> +	aie_cfg->rotate_degree = fd->attr_para->rotate_degree[fd->attr_para->r_idx];
> +	aie_cfg->src_img_addr =
> +		fd->attr_para->src_img_addr[fd->attr_para->r_idx];
> +	aie_cfg->src_img_addr_uv =
> +		fd->attr_para->src_img_addr_uv[fd->attr_para->r_idx];
> +	aie_cfg->src_img_width = fd->attr_para->img_width[fd->attr_para->r_idx];
> +	aie_cfg->src_img_height =
> +		fd->attr_para->img_height[fd->attr_para->r_idx];
> +	aie_cfg->src_img_fmt = fd->attr_para->src_img_fmt[fd->attr_para->r_idx];

User space know all these information, so it's not necessary to set these information to output buffer.
Drop these.

> +
> +	aie_cfg->irq_status = readl(fd->fd_base + AIE_INT_EN_REG);

User space is not necessary to know irq_status.
Drop this.

> +
> +	/* 64 feature * 32 bytes */
> +	attr_age_result =
> +		(u32 *)fd->dma_para->age_out_hw_va[fd->attr_para->r_idx];
> +	attr_gender_result =
> +		(u32 *)fd->dma_para->gender_out_hw_va[fd->attr_para->r_idx];
> +	attr_is_indian_result =
> +		(u32 *)fd->dma_para->is_indian_out_hw_va[fd->attr_para->r_idx];
> +	attr_ethnicity_result =
> +		(u32 *)fd->dma_para->ethnicity_out_hw_va[fd->attr_para->r_idx];
> +
> +	aie_cfg->attr_out.merged_age_ret[0] = aie_get_lo16(*attr_age_result);
> +	aie_cfg->attr_out.merged_age_ret[1] = aie_get_hi16(*attr_age_result);

Define merged_age_ret as u32,

u32 merged_age_ret;

And this would be

aie_cfg->attr_out.merged_age_ret = *attr_age_result;

> +
> +	aie_cfg->attr_out.merged_gender_ret[0] = aie_get_lo16(*attr_gender_result);
> +	aie_cfg->attr_out.merged_gender_ret[1] = aie_get_hi16(*attr_gender_result);

u32 merged_gender_ret;

> +
> +	aie_cfg->attr_out.merged_is_indian_ret[0] = aie_get_lo16(*attr_is_indian_result);
> +	aie_cfg->attr_out.merged_is_indian_ret[1] = aie_get_hi16(*attr_is_indian_result);

u32 merged_is_indian_ret;

> +
> +	aie_cfg->attr_out.merged_ethnicity_ret[0] = aie_get_lo16(*attr_ethnicity_result);
> +	aie_cfg->attr_out.merged_ethnicity_ret[1] = aie_get_hi16(*attr_ethnicity_result);
> +	aie_cfg->attr_out.merged_ethnicity_ret[2] = aie_get_lo16(*(attr_ethnicity_result + 1));

u64 merged_ethnicity_ret;

> +
> +	fd->attr_para->r_idx = (fd->attr_para->r_idx + 1) % MAX_ENQUE_FRAME_NUM;
> +}
> +
> +void aie_get_fld_result(struct mtk_aie_dev *fd, struct aie_enq_info *aie_cfg)
> +{
> +	u8 fld_rlt[FLD_OUTPUT_X_SIZE][FLD_OUTPUT_SIZE];
> +	u16 *out_parsing;
> +	int i, j;
> +
> +	aie_cfg->irq_status = readl(fd->fd_base + AIE_INT_EN_REG);
> +
> +	memcpy(fld_rlt, fd->fld_para->fld_output_va[0], sizeof(fld_rlt));

fld_output_va[] is used in this function and you just use fld_output_va[0],
so it's not necessary to use an array to store fld_output_va.
In aie_arrange_fld_buf(),

fd->fld_para->fld_output_va = fd->fd_fld_out_hw.va;

In below for-loop,

out_parsing = fd->fld_para->fld_output_va + j * FLD_OUTPUT_SIZE;


> +
> +	for (j = 0; j < aie_cfg->fld_face_num; j++) {
> +		out_parsing = (unsigned short *)&fld_rlt[j][0];
> +		for (i = 0; i < FLD_CUR_LANDMARK; i++) {
> +			aie_cfg->fld_out[j].fld_landmark[i].x = *out_parsing;
> +			aie_cfg->fld_out[j].fld_landmark[i].y = *(out_parsing + 1);

aie_cfg->fld_out[j].fld_landmark[i].x = out_parsing[0];
aie_cfg->fld_out[j].fld_landmark[i].y = out_parsing[1];

looks better.

> +
> +			if (i % 2)
> +				out_parsing = out_parsing + 6;
> +			else
> +				out_parsing = out_parsing + 2;
> +		}
> +		out_parsing = (unsigned short *)&fld_rlt[j][0];
> +		if (FLD_CUR_LANDMARK % 2)
> +			out_parsing = out_parsing + ((FLD_CUR_LANDMARK + 1) / 2) * 8;
> +		else
> +			out_parsing = out_parsing + (FLD_CUR_LANDMARK / 2) * 8;

Even though FLD_CUR_LANDMARK % 2 is 0, you could still use below formula,

out_parsing = out_parsing + ((FLD_CUR_LANDMARK + 1) / 2) * 8;

So you could drop this if-checking and use this formula for all case.

> +
> +		aie_cfg->fld_out[j].fld_out_rop = *out_parsing;
> +		aie_cfg->fld_out[j].fld_out_rip = *(out_parsing + 1);
> +		aie_cfg->fld_out[j].confidence = *(out_parsing + 2);
> +		aie_cfg->fld_out[j].blinkscore = *(out_parsing + 3);

aie_cfg->fld_out[j].fld_out_rop = out_parsing[0];
aie_cfg->fld_out[j].fld_out_rip = out_parsing[1];
aie_cfg->fld_out[j].confidence = out_parsing[2];
aie_cfg->fld_out[j].blinkscore = out_parsing[3];

looks better.

> +	}
> +}
> diff --git a/drivers/media/platform/mediatek/aie/mtk_aie_v4l2.c b/drivers/media/platform/mediatek/aie/mtk_aie_v4l2.c
> new file mode 100644
> index 000000000000..28646d5a53aa
> --- /dev/null
> 

[snip]

> +
> +static void mtk_aie_fill_pixfmt_mp(struct v4l2_pix_format_mplane *dfmt,
> +				   const struct v4l2_pix_format_mplane *sfmt)
> +{
> +	dfmt->field = V4L2_FIELD_NONE;
> +	dfmt->colorspace = V4L2_COLORSPACE_BT2020;
> +	dfmt->num_planes = sfmt->num_planes;
> +	dfmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
> +	dfmt->quantization = V4L2_QUANTIZATION_DEFAULT;
> +	dfmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(dfmt->colorspace);
> +	dfmt->pixelformat = sfmt->pixelformat;
> +
> +	/* Keep user setting as possible */
> +	dfmt->width = clamp(dfmt->width, MTK_FD_OUTPUT_MIN_WIDTH,
> +			    MTK_FD_OUTPUT_MAX_WIDTH);
> +	dfmt->height = clamp(dfmt->height, MTK_FD_OUTPUT_MIN_HEIGHT,
> +			     MTK_FD_OUTPUT_MAX_HEIGHT);
> +
> +	dfmt->plane_fmt[0].bytesperline = ALIGN(dfmt->width, 16);
> +	dfmt->plane_fmt[1].bytesperline = ALIGN(dfmt->width, 16);
> +
> +	dfmt->plane_fmt[0].sizeimage = dfmt->height * dfmt->plane_fmt[0].bytesperline;
> +	dfmt->plane_fmt[1].sizeimage = dfmt->height * dfmt->plane_fmt[1].bytesperline;
> +	if (sfmt->num_planes == 2 && sfmt->pixelformat == V4L2_PIX_FMT_NV12M) {

if (sfmt->pixelformat == V4L2_PIX_FMT_NV12M) {

V4L2_PIX_FMT_NV12M imply that num_planes is 2, so checking 'sfmt->num_planes == 2' is redundant.

> +		dfmt->plane_fmt[1].sizeimage /= 2;
> +	} else if (sfmt->pixelformat == V4L2_PIX_FMT_NV12) {
> +		dfmt->plane_fmt[0].sizeimage *= 3;
> +		dfmt->plane_fmt[0].sizeimage /= 2;
> +	}
> +}

[snip]

> +
> +static __poll_t mtk_vfd_fop_poll(struct file *file, poll_table *wait)
> +{
> +	int ret;
> +
> +	struct mtk_aie_ctx *ctx = container_of(file->private_data, struct mtk_aie_ctx, fh);
> +	struct mtk_aie_dev *fd = ctx->fd_dev;
> +
> +	if (fd->fd_state & STATE_INIT) {
> +		/* Waiting Job Finsh */
> +		ret = wait_for_completion_timeout(&fd->fd_job_finished, msecs_to_jiffies(1000));

It's not necessary to wait here because v4l2_m2m_fop_poll() would do waiting.

> +		if (!ret) {
> +			dev_err(ctx->dev, "Wait job finish timeout from poll\n");
> +			return EPOLLERR;
> +		}
> +	}
> +
> +	return v4l2_m2m_fop_poll(file, wait);
> +}
> +
> +static const struct v4l2_file_operations fd_video_fops = {
> +	.owner = THIS_MODULE,
> +	.open = mtk_vfd_open,
> +	.release = mtk_vfd_release,
> +	.poll = mtk_vfd_fop_poll,
> +	.unlocked_ioctl = video_ioctl2,
> +	.mmap = v4l2_m2m_fop_mmap,
> +};
> +
> +static int mtk_aie_job_ready(void *priv)
> +{
> +	struct vb2_v4l2_buffer *src_buf, *dst_buf;
> +	struct mtk_aie_ctx *ctx = priv;
> +	struct mtk_aie_dev *fd = ctx->fd_dev;
> +	struct fd_buffer src_img[2] = {};
> +	void *plane_vaddr;
> +
> +	if (!ctx->fh.m2m_ctx) {

When file is open, ctx->fh.m2m_ctx is valid.
And device_run() callback is called when file is opened.
So this checking is redundant.

> +		dev_err(fd->dev, "Memory-to-memory context is NULL\n");
> +		return -1;
> +	}
> +
> +	if (!(fd->fd_state & STATE_OPEN)) {

I think when file is clode, V4L2 would not call device_run() callback function.
So this checking is redundant.

> +		dev_err(fd->dev, "Job ready with device closed\n");
> +		return -1;
> +	}
> +
> +	mutex_lock(&fd->fd_lock);
> +
> +	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> +	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> +
> +	if (!src_buf || !dst_buf) {
> +		dev_err(fd->dev, "src or dst buf is NULL\n");
> +		mutex_unlock(&fd->fd_lock);
> +		return -1;
> +	}
> +
> +	if (!(fd->fd_state & STATE_INIT)) {
> +		dev_err(fd->dev, "%s Wrong fd state: %d\n", __func__, fd->fd_state);
> +		mutex_unlock(&fd->fd_lock);
> +		return -1;
> +	}
> +
> +	plane_vaddr = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
> +	if (!plane_vaddr) {
> +		dev_err(fd->dev, "Failed to get plane virtual address\n");
> +		mutex_unlock(&fd->fd_lock);
> +		return -1;
> +	}
> +
> +	v4l2_ctrl_request_setup(src_buf->vb2_buf.req_obj.req, &ctx->hdl);
> +
> +	fd->aie_cfg = (struct aie_enq_info *)plane_vaddr;
> +	fd->aie_cfg->fld_face_num = ctx->user_param.fld_face_num;

You clear fd->aie_cfg below, so here assign fd->aie_cfg->fld_face_num is redundant.
Drop it.

> +
> +	memset(fd->aie_cfg, 0, sizeof(struct aie_enq_info));
> +	memcpy(fd->aie_cfg, &ctx->user_param, sizeof(struct aie_enq_info));

It's not necessary to copy user space setting to output buffer.
User space know all these setting.

> +	memcpy(fd->aie_cfg->fld_input, ctx->user_param.fld_input,
> +	       FLD_MAX_FRAME * sizeof(struct v4l2_fld_crop_rip_rop));
> +
> +	src_img[0].dma_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
> +
> +	if (ctx->src_fmt.num_planes == 2) {
> +		src_img[1].dma_addr =
> +			vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 1);
> +	}
> +
> +	if ((fd->aie_cfg->sel_mode == FDMODE || fd->aie_cfg->sel_mode == ATTRIBUTEMODE) &&
> +	    fd->aie_cfg->src_img_fmt == FMT_YUV420_1P) {
> +		src_img[1].dma_addr = src_img[0].dma_addr + ctx->user_param.src_img_stride *
> +			ctx->user_param.src_img_height;
> +	}
> +
> +	fd->aie_cfg->src_img_addr = src_img[0].dma_addr;
> +	fd->aie_cfg->src_img_addr_uv = src_img[1].dma_addr;

fd->aie_cfg is output buffer, so do not write src_img_addr and src_img_addr_uv to output buffer.
You should define src_img_addr and src_img_addr_uv to somewhere not output buffer.

> +
> +	aie_prepare(fd, fd->aie_cfg);
> +
> +	mutex_unlock(&fd->fd_lock);
> +
> +	if (src_buf) {
> +		/* Complete request controls if any */
> +		v4l2_ctrl_request_complete(src_buf->vb2_buf.req_obj.req, &ctx->hdl);
> +	}
> +
> +	return 0;
> +}

[snip]

> +
> +static void mtk_aie_frame_done_worker(struct work_struct *work)
> +{
> +	struct mtk_aie_req_work *req_work = (struct mtk_aie_req_work *)work;
> +	struct mtk_aie_dev *fd = (struct mtk_aie_dev *)req_work->fd_dev;
> +
> +	if (fd->reg_cfg.fd_mode == FDMODE) {
> +		fd->reg_cfg.hw_result = readl(fd->fd_base + AIE_RESULT_0_REG);
> +		fd->reg_cfg.hw_result1 = readl(fd->fd_base + AIE_RESULT_1_REG);

hw_result and hw_result1 is used only in aie_get_fd_result() which will be called in next statement.
So you could read AIE_RESULT_0_REG and AIE_RESULT_1_REG in aie_get_fd_result() and drop hw_result and hw_result1.

Regards,
CK

> +	}
> +
> +	mutex_lock(&fd->fd_lock);
> +
> +	switch (fd->aie_cfg->sel_mode) {
> +	case FDMODE:
> +		aie_get_fd_result(fd, fd->aie_cfg);
> +		break;
> +	case ATTRIBUTEMODE:
> +		aie_get_attr_result(fd, fd->aie_cfg);
> +		break;
> +	case FLDMODE:
> +		aie_get_fld_result(fd, fd->aie_cfg);
> +		break;
> +	default:
> +		dev_dbg(fd->dev, "Wrong sel_mode\n");
> +		break;
> +	}
> +
> +	mutex_unlock(&fd->fd_lock);
> +
> +	if (!cancel_delayed_work(&fd->job_timeout_work))
> +		return;
> +
> +	atomic_dec(&fd->num_composing);
> +	mtk_aie_hw_job_finish(fd, VB2_BUF_STATE_DONE);
> +	wake_up(&fd->flushing_waitq);
> +}