media: aspeed: Support aspeed mode to reduce compressed data

aspeed supports differential jpeg format which only compress the parts
which are changed. In this way, it reduces both the amount of data to be
transferred by network and those to be decoded on the client side.

2 new ctrls are added:
* Aspeed HQ Mode: to control aspeed's high quality(2-pass) compression mode
This only works with yuv444 subsampling.
* Aspeed HQ Quality: to control the quality of aspeed's HQ mode
only useful if Aspeed HQ mode is enabled

Aspeed JPEG Format requires an additional buffer, called bcd, to store
the information about which macro block in the new frame is different
from the previous one.

To have bcd correctly working, we need to swap the buffers for src0/1 to
make src1 refer to previous frame and src0 to the coming new frame.

Signed-off-by: Jammy Huang <[e-mail]>
Reported-by: kernel test robot <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
[hverkuil: fix logging dma_addr_t, use %pad for that]

drivers/media/platform/aspeed/aspeed-video.c

···
 #include <media/v4l2-event.h>
 #include <media/v4l2-ioctl.h>
 #include <media/videobuf2-dma-contig.h>
+#include <uapi/linux/aspeed-video.h>
 
 #define ASPEED_VIDEO_V4L2_MIN_BUF_REQ 3
 
···
 
 #define VE_MAX_SRC_BUFFER_SIZE		0x8ca000 /* 1920 * 1200, 32bpp */
 #define VE_JPEG_HEADER_SIZE		0x006000 /* 512 * 12 * 4 */
+#define VE_BCD_BUFF_SIZE		0x9000 /* (1920/8) * (1200/8) */
 
 #define VE_PROTECTION_KEY		0x000
 #define  VE_PROTECTION_KEY_UNLOCK	0x1a038aa8
···
 #define VE_SCALING_FILTER2		0x020
 #define VE_SCALING_FILTER3		0x024
 
+#define VE_BCD_CTRL			0x02C
+#define  VE_BCD_CTRL_EN_BCD		BIT(0)
+#define  VE_BCD_CTRL_EN_ABCD		BIT(1)
+#define  VE_BCD_CTRL_EN_CB		BIT(2)
+#define  VE_BCD_CTRL_THR		GENMASK(23, 16)
+#define  VE_BCD_CTRL_ABCD_THR		GENMASK(31, 24)
+
 #define VE_CAP_WINDOW			0x030
 #define VE_COMP_WINDOW			0x034
 #define VE_COMP_PROC_OFFSET		0x038
···
 #define VE_SRC0_ADDR			0x044
 #define VE_SRC_SCANLINE_OFFSET		0x048
 #define VE_SRC1_ADDR			0x04c
+#define VE_BCD_ADDR			0x050
 #define VE_COMP_ADDR			0x054
 
 #define VE_STREAM_BUF_SIZE		0x058
···
 #define  VE_COMP_CTRL_ENCODE		GENMASK(21, 20)
 #define  VE_COMP_CTRL_HQ_DCT_CHR	GENMASK(26, 22)
 #define  VE_COMP_CTRL_HQ_DCT_LUM	GENMASK(31, 27)
+
+#define VE_CB_ADDR			0x06C
 
 #define AST2400_VE_COMP_SIZE_READ_BACK	0x078
 #define AST2600_VE_COMP_SIZE_READ_BACK	0x084
···
 	VIDEO_CLOCKS_ON,
 };
 
+enum aspeed_video_format {
+	VIDEO_FMT_STANDARD = 0,
+	VIDEO_FMT_ASPEED,
+	VIDEO_FMT_MAX = VIDEO_FMT_ASPEED
+};
+
 // for VE_CTRL_CAPTURE_FMT
 enum aspeed_video_capture_format {
 	VIDEO_CAP_FMT_YUV_STUDIO_SWING = 0,
···
 /*
  * struct aspeed_video - driver data
  *
- * res_work:           holds the delayed_work for res-detection if unlock
- * buffers:            holds the list of buffer queued from user
+ * res_work:		holds the delayed_work for res-detection if unlock
+ * buffers:		holds the list of buffer queued from user
  * flags:		holds the state of video
  * sequence:		holds the last number of frame completed
  * max_compressed_size:	holds max compressed stream's size
  * srcs:		holds the buffer information for srcs
  * jpeg:		holds the buffer information for jpeg header
+ * bcd:			holds the buffer information for bcd work
  * yuv420:		a flag raised if JPEG subsampling is 420
+ * format:		holds the video format
+ * hq_mode:		a flag raised if HQ is enabled. Only for VIDEO_FMT_ASPEED
  * frame_rate:		holds the frame_rate
  * jpeg_quality:	holds jpeq's quality (0~11)
+ * jpeg_hq_quality:	holds hq's quality (1~12) only if hq_mode enabled
  * frame_bottom:	end position of video data in vertical direction
  * frame_left:		start position of video data in horizontal direction
  * frame_right:		end position of video data in horizontal direction
···
 	unsigned int max_compressed_size;
 	struct aspeed_video_addr srcs[2];
 	struct aspeed_video_addr jpeg;
+	struct aspeed_video_addr bcd;
 
 	bool yuv420;
+	enum aspeed_video_format format;
+	bool hq_mode;
 	unsigned int frame_rate;
 	unsigned int jpeg_quality;
+	unsigned int jpeg_hq_quality;
 
 	unsigned int frame_bottom;
 	unsigned int frame_left;
···
 	},
 };
 
+static const char * const format_str[] = {"Standard JPEG",
+	"Aspeed JPEG"};
+
 static unsigned int debug;
+
+static bool aspeed_video_alloc_buf(struct aspeed_video *video,
+				   struct aspeed_video_addr *addr,
+				   unsigned int size);
+
+static void aspeed_video_free_buf(struct aspeed_video *video,
+				  struct aspeed_video_addr *addr);
 
 static void aspeed_video_init_jpeg_table(u32 *table, bool yuv420)
 {
···
 	unsigned long flags;
 	struct aspeed_video_buffer *buf;
 	u32 seq_ctrl = aspeed_video_read(video, VE_SEQ_CTRL);
+	bool bcd_buf_need = (video->format != VIDEO_FMT_STANDARD);
 
 	if (video->v4l2_input_status) {
 		v4l2_warn(&video->v4l2_dev, "No signal; don't start frame\n");
···
 	    !(seq_ctrl & VE_SEQ_CTRL_CAP_BUSY)) {
 		v4l2_warn(&video->v4l2_dev, "Engine busy; don't start frame\n");
 		return -EBUSY;
+	}
+
+	if (bcd_buf_need && !video->bcd.size) {
+		if (!aspeed_video_alloc_buf(video, &video->bcd,
+					    VE_BCD_BUFF_SIZE)) {
+			dev_err(video->dev, "Failed to allocate BCD buffer\n");
+			dev_err(video->dev, "don't start frame\n");
+			return -ENOMEM;
+		}
+		aspeed_video_write(video, VE_BCD_ADDR, video->bcd.dma);
+		v4l2_dbg(1, debug, &video->v4l2_dev, "bcd addr(%pad) size(%d)\n",
+			 &video->bcd.dma, video->bcd.size);
+	} else if (!bcd_buf_need && video->bcd.size) {
+		aspeed_video_free_buf(video, &video->bcd);
 	}
 
 	spin_lock_irqsave(&video->lock, flags);
···
 	schedule_delayed_work(&video->res_work, delay);
 }
 
+static void aspeed_video_swap_src_buf(struct aspeed_video *v)
+{
+	if (v->format == VIDEO_FMT_STANDARD)
+		return;
+
+	/* Reset bcd buffer to have a full frame update every 8 frames.  */
+	if (IS_ALIGNED(v->sequence, 8))
+		memset((u8 *)v->bcd.virt, 0x00, VE_BCD_BUFF_SIZE);
+
+	if (v->sequence & 0x01) {
+		aspeed_video_write(v, VE_SRC0_ADDR, v->srcs[1].dma);
+		aspeed_video_write(v, VE_SRC1_ADDR, v->srcs[0].dma);
+	} else {
+		aspeed_video_write(v, VE_SRC0_ADDR, v->srcs[0].dma);
+		aspeed_video_write(v, VE_SRC1_ADDR, v->srcs[1].dma);
+	}
+}
+
 static irqreturn_t aspeed_video_irq(int irq, void *arg)
 {
 	struct aspeed_video *video = arg;
···
 
 	if (sts & VE_INTERRUPT_COMP_COMPLETE) {
 		struct aspeed_video_buffer *buf;
+		bool empty = true;
 		u32 frame_size = aspeed_video_read(video,
 						   video->comp_size_read);
 
···
 		if (buf) {
 			vb2_set_plane_payload(&buf->vb.vb2_buf, 0, frame_size);
 
-			if (!list_is_last(&buf->link, &video->buffers)) {
+			/*
+			 * aspeed_jpeg requires continuous update.
+			 * On the contrary, standard jpeg can keep last buffer
+			 * to always have the latest result.
+			 */
+			if (video->format == VIDEO_FMT_STANDARD &&
+			    list_is_last(&buf->link, &video->buffers)) {
+				empty = false;
+				v4l2_warn(&video->v4l2_dev, "skip to keep last frame updated\n");
+			} else {
 				buf->vb.vb2_buf.timestamp = ktime_get_ns();
 				buf->vb.sequence = video->sequence++;
 				buf->vb.field = V4L2_FIELD_NONE;
 				vb2_buffer_done(&buf->vb.vb2_buf,
 						VB2_BUF_STATE_DONE);
 				list_del(&buf->link);
+				empty = list_empty(&video->buffers);
 			}
 		}
 		spin_unlock(&video->lock);
···
 		aspeed_video_write(video, VE_INTERRUPT_STATUS,
 				   VE_INTERRUPT_COMP_COMPLETE);
 		sts &= ~VE_INTERRUPT_COMP_COMPLETE;
-		if (test_bit(VIDEO_STREAMING, &video->flags) && buf)
+
+		aspeed_video_swap_src_buf(video);
+
+		if (test_bit(VIDEO_STREAMING, &video->flags) && !empty)
 			aspeed_video_start_frame(video);
 	}
 
···
 				   FIELD_PREP(VE_TGS_FIRST, video->frame_top) |
 				   FIELD_PREP(VE_TGS_LAST,
 					      video->frame_bottom + 1));
-		aspeed_video_update(video, VE_CTRL, 0, VE_CTRL_INT_DE);
+		aspeed_video_update(video, VE_CTRL,
+				    VE_CTRL_INT_DE | VE_CTRL_DIRECT_FETCH,
+				    VE_CTRL_INT_DE);
 	} else {
 		v4l2_dbg(1, debug, &video->v4l2_dev, "Capture: Direct Mode\n");
-		aspeed_video_update(video, VE_CTRL, 0, VE_CTRL_DIRECT_FETCH);
+		aspeed_video_update(video, VE_CTRL,
+				    VE_CTRL_INT_DE | VE_CTRL_DIRECT_FETCH,
+				    VE_CTRL_DIRECT_FETCH);
 	}
 
 	size *= 4;
···
 		aspeed_video_free_buf(video, &video->srcs[0]);
 }
 
-static void aspeed_video_init_regs(struct aspeed_video *video)
+static void aspeed_video_update_regs(struct aspeed_video *video)
 {
-	u32 comp_ctrl = VE_COMP_CTRL_RSVD |
-		FIELD_PREP(VE_COMP_CTRL_DCT_LUM, video->jpeg_quality) |
-		FIELD_PREP(VE_COMP_CTRL_DCT_CHR, video->jpeg_quality | 0x10);
-	u32 ctrl = VE_CTRL_AUTO_OR_CURSOR |
-		FIELD_PREP(VE_CTRL_CAPTURE_FMT, VIDEO_CAP_FMT_YUV_FULL_SWING);
-	u32 seq_ctrl = video->jpeg_mode;
+	u8 jpeg_hq_quality = clamp((int)video->jpeg_hq_quality - 1, 0,
+				   ASPEED_VIDEO_JPEG_NUM_QUALITIES - 1);
+	u32 comp_ctrl =	FIELD_PREP(VE_COMP_CTRL_DCT_LUM, video->jpeg_quality) |
+		FIELD_PREP(VE_COMP_CTRL_DCT_CHR, video->jpeg_quality | 0x10) |
+		FIELD_PREP(VE_COMP_CTRL_EN_HQ, video->hq_mode) |
+		FIELD_PREP(VE_COMP_CTRL_HQ_DCT_LUM, jpeg_hq_quality) |
+		FIELD_PREP(VE_COMP_CTRL_HQ_DCT_CHR, jpeg_hq_quality | 0x10);
+	u32 ctrl = 0;
+	u32 seq_ctrl = 0;
+
+	v4l2_dbg(1, debug, &video->v4l2_dev, "framerate(%d)\n",
+		 video->frame_rate);
+	v4l2_dbg(1, debug, &video->v4l2_dev, "jpeg format(%s) subsample(%s)\n",
+		 format_str[video->format],
+		 video->yuv420 ? "420" : "444");
+	v4l2_dbg(1, debug, &video->v4l2_dev, "compression quality(%d)\n",
+		 video->jpeg_quality);
+	v4l2_dbg(1, debug, &video->v4l2_dev, "hq_mode(%s) hq_quality(%d)\n",
+		 video->hq_mode ? "on" : "off", video->jpeg_hq_quality);
+
+	if (video->format == VIDEO_FMT_ASPEED)
+		aspeed_video_update(video, VE_BCD_CTRL, 0, VE_BCD_CTRL_EN_BCD);
+	else
+		aspeed_video_update(video, VE_BCD_CTRL, VE_BCD_CTRL_EN_BCD, 0);
 
 	if (video->frame_rate)
 		ctrl |= FIELD_PREP(VE_CTRL_FRC, video->frame_rate);
 
+	if (video->format == VIDEO_FMT_STANDARD) {
+		comp_ctrl &= ~FIELD_PREP(VE_COMP_CTRL_EN_HQ, video->hq_mode);
+		seq_ctrl |= video->jpeg_mode;
+	}
+
 	if (video->yuv420)
 		seq_ctrl |= VE_SEQ_CTRL_YUV420;
+
+	if (video->jpeg.virt)
+		aspeed_video_update_jpeg_table(video->jpeg.virt, video->yuv420);
+
+	/* Set control registers */
+	aspeed_video_update(video, VE_SEQ_CTRL,
+			    video->jpeg_mode | VE_SEQ_CTRL_YUV420,
+			    seq_ctrl);
+	aspeed_video_update(video, VE_CTRL, VE_CTRL_FRC, ctrl);
+	aspeed_video_update(video, VE_COMP_CTRL,
+			    VE_COMP_CTRL_DCT_LUM | VE_COMP_CTRL_DCT_CHR |
+			    VE_COMP_CTRL_EN_HQ | VE_COMP_CTRL_HQ_DCT_LUM |
+			    VE_COMP_CTRL_HQ_DCT_CHR | VE_COMP_CTRL_VQ_4COLOR |
+			    VE_COMP_CTRL_VQ_DCT_ONLY,
+			    comp_ctrl);
+}
+
+static void aspeed_video_init_regs(struct aspeed_video *video)
+{
+	u32 ctrl = VE_CTRL_AUTO_OR_CURSOR |
+		FIELD_PREP(VE_CTRL_CAPTURE_FMT, VIDEO_CAP_FMT_YUV_FULL_SWING);
 
 	/* Unlock VE registers */
 	aspeed_video_write(video, VE_PROTECTION_KEY, VE_PROTECTION_KEY_UNLOCK);
···
 	aspeed_video_write(video, VE_JPEG_ADDR, video->jpeg.dma);
 
 	/* Set control registers */
-	aspeed_video_write(video, VE_SEQ_CTRL, seq_ctrl);
 	aspeed_video_write(video, VE_CTRL, ctrl);
-	aspeed_video_write(video, VE_COMP_CTRL, comp_ctrl);
+	aspeed_video_write(video, VE_COMP_CTRL, VE_COMP_CTRL_RSVD);
 
 	/* Don't downscale */
 	aspeed_video_write(video, VE_SCALING_FACTOR, 0x10001000);
···
 			   FIELD_PREP(VE_MODE_DT_HOR_STABLE, 6) |
 			   FIELD_PREP(VE_MODE_DT_VER_STABLE, 6) |
 			   FIELD_PREP(VE_MODE_DT_EDG_THROD, 0x65));
+
+	aspeed_video_write(video, VE_BCD_CTRL, 0);
 }
 
 static void aspeed_video_start(struct aspeed_video *video)
···
 	if (video->srcs[1].size)
 		aspeed_video_free_buf(video, &video->srcs[1]);
 
+	if (video->bcd.size)
+		aspeed_video_free_buf(video, &video->bcd);
+
 	video->v4l2_input_status = V4L2_IN_ST_NO_SIGNAL;
 	video->flags = 0;
 }
···
 static int aspeed_video_enum_format(struct file *file, void *fh,
 				    struct v4l2_fmtdesc *f)
 {
+	struct aspeed_video *video = video_drvdata(file);
+
 	if (f->index)
 		return -EINVAL;
 
-	f->pixelformat = V4L2_PIX_FMT_JPEG;
+	f->pixelformat = video->pix_fmt.pixelformat;
 
 	return 0;
 }
···
 	struct aspeed_video *video = video_drvdata(file);
 
 	f->fmt.pix = video->pix_fmt;
+
+	return 0;
+}
+
+static int aspeed_video_set_format(struct file *file, void *fh,
+				   struct v4l2_format *f)
+{
+	struct aspeed_video *video = video_drvdata(file);
+
+	if (vb2_is_busy(&video->queue))
+		return -EBUSY;
+
+	switch (f->fmt.pix.pixelformat) {
+	case V4L2_PIX_FMT_JPEG:
+		video->format = VIDEO_FMT_STANDARD;
+		break;
+	case V4L2_PIX_FMT_AJPG:
+		video->format = VIDEO_FMT_ASPEED;
+		break;
+	default:
+		return -EINVAL;
+	}
+	video->pix_fmt.pixelformat = f->fmt.pix.pixelformat;
 
 	return 0;
 }
···
 
 	.vidioc_enum_fmt_vid_cap = aspeed_video_enum_format,
 	.vidioc_g_fmt_vid_cap = aspeed_video_get_format,
-	.vidioc_s_fmt_vid_cap = aspeed_video_get_format,
+	.vidioc_s_fmt_vid_cap = aspeed_video_set_format,
 	.vidioc_try_fmt_vid_cap = aspeed_video_get_format,
 
 	.vidioc_reqbufs = vb2_ioctl_reqbufs,
···
 	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 };
 
-static void aspeed_video_update_jpeg_quality(struct aspeed_video *video)
-{
-	u32 comp_ctrl = FIELD_PREP(VE_COMP_CTRL_DCT_LUM, video->jpeg_quality) |
-		FIELD_PREP(VE_COMP_CTRL_DCT_CHR, video->jpeg_quality | 0x10);
-
-	aspeed_video_update(video, VE_COMP_CTRL,
-			    VE_COMP_CTRL_DCT_LUM | VE_COMP_CTRL_DCT_CHR,
-			    comp_ctrl);
-}
-
-static void aspeed_video_update_subsampling(struct aspeed_video *video)
-{
-	if (video->jpeg.virt)
-		aspeed_video_update_jpeg_table(video->jpeg.virt, video->yuv420);
-
-	if (video->yuv420)
-		aspeed_video_update(video, VE_SEQ_CTRL, 0, VE_SEQ_CTRL_YUV420);
-	else
-		aspeed_video_update(video, VE_SEQ_CTRL, VE_SEQ_CTRL_YUV420, 0);
-}
-
 static int aspeed_video_set_ctrl(struct v4l2_ctrl *ctrl)
 {
 	struct aspeed_video *video = container_of(ctrl->handler,
···
 	switch (ctrl->id) {
 	case V4L2_CID_JPEG_COMPRESSION_QUALITY:
 		video->jpeg_quality = ctrl->val;
-		aspeed_video_update_jpeg_quality(video);
+		if (test_bit(VIDEO_STREAMING, &video->flags))
+			aspeed_video_update_regs(video);
 		break;
 	case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
-		if (ctrl->val == V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
-			video->yuv420 = true;
-			aspeed_video_update_subsampling(video);
-		} else {
-			video->yuv420 = false;
-			aspeed_video_update_subsampling(video);
-		}
+		video->yuv420 = (ctrl->val == V4L2_JPEG_CHROMA_SUBSAMPLING_420);
+		if (test_bit(VIDEO_STREAMING, &video->flags))
+			aspeed_video_update_regs(video);
+		break;
+	case V4L2_CID_ASPEED_HQ_MODE:
+		video->hq_mode = ctrl->val;
+		if (test_bit(VIDEO_STREAMING, &video->flags))
+			aspeed_video_update_regs(video);
+		break;
+	case V4L2_CID_ASPEED_HQ_JPEG_QUALITY:
+		video->jpeg_hq_quality = ctrl->val;
+		if (test_bit(VIDEO_STREAMING, &video->flags))
+			aspeed_video_update_regs(video);
 		break;
 	default:
 		return -EINVAL;
···
 
 static const struct v4l2_ctrl_ops aspeed_video_ctrl_ops = {
 	.s_ctrl = aspeed_video_set_ctrl,
+};
+
+static const struct v4l2_ctrl_config aspeed_ctrl_HQ_mode = {
+	.ops = &aspeed_video_ctrl_ops,
+	.id = V4L2_CID_ASPEED_HQ_MODE,
+	.name = "Aspeed HQ Mode",
+	.type = V4L2_CTRL_TYPE_BOOLEAN,
+	.min = false,
+	.max = true,
+	.step = 1,
+	.def = false,
+};
+
+static const struct v4l2_ctrl_config aspeed_ctrl_HQ_jpeg_quality = {
+	.ops = &aspeed_video_ctrl_ops,
+	.id = V4L2_CID_ASPEED_HQ_JPEG_QUALITY,
+	.name = "Aspeed HQ Quality",
+	.type = V4L2_CTRL_TYPE_INTEGER,
+	.min = 1,
+	.max = ASPEED_VIDEO_JPEG_NUM_QUALITIES,
+	.step = 1,
+	.def = 1,
 };
 
 static void aspeed_video_resolution_work(struct work_struct *work)
···
 		goto done;
 
 	aspeed_video_init_regs(video);
+
+	aspeed_video_update_regs(video);
 
 	aspeed_video_get_resolution(video);
 
···
 	video->sequence = 0;
 	video->perf.duration_max = 0;
 	video->perf.duration_min = 0xffffffff;
+
+	aspeed_video_update_regs(video);
 
 	rc = aspeed_video_start_frame(video);
 	if (rc) {
···
 	struct v4l2_device *v4l2_dev = &video->v4l2_dev;
 	struct vb2_queue *vbq = &video->queue;
 	struct video_device *vdev = &video->vdev;
+	struct v4l2_ctrl_handler *hdl = &video->ctrl_handler;
 	int rc;
 
 	video->pix_fmt.pixelformat = V4L2_PIX_FMT_JPEG;
···
 		return rc;
 	}
 
-	v4l2_ctrl_handler_init(&video->ctrl_handler, 2);
-	v4l2_ctrl_new_std(&video->ctrl_handler, &aspeed_video_ctrl_ops,
+	v4l2_ctrl_handler_init(hdl, 4);
+	v4l2_ctrl_new_std(hdl, &aspeed_video_ctrl_ops,
 			  V4L2_CID_JPEG_COMPRESSION_QUALITY, 0,
 			  ASPEED_VIDEO_JPEG_NUM_QUALITIES - 1, 1, 0);
-	v4l2_ctrl_new_std_menu(&video->ctrl_handler, &aspeed_video_ctrl_ops,
+	v4l2_ctrl_new_std_menu(hdl, &aspeed_video_ctrl_ops,
 			       V4L2_CID_JPEG_CHROMA_SUBSAMPLING,
 			       V4L2_JPEG_CHROMA_SUBSAMPLING_420, mask,
 			       V4L2_JPEG_CHROMA_SUBSAMPLING_444);
+	v4l2_ctrl_new_custom(hdl, &aspeed_ctrl_HQ_mode, NULL);
+	v4l2_ctrl_new_custom(hdl, &aspeed_ctrl_HQ_jpeg_quality, NULL);
 
-	rc = video->ctrl_handler.error;
+	rc = hdl->error;
 	if (rc) {
 		v4l2_ctrl_handler_free(&video->ctrl_handler);
 		v4l2_device_unregister(v4l2_dev);
···
 		return rc;
 	}
 
-	v4l2_dev->ctrl_handler = &video->ctrl_handler;
+	v4l2_dev->ctrl_handler = hdl;
 
 	vbq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 	vbq->io_modes = VB2_MMAP | VB2_READ | VB2_DMABUF;
···
 	video->comp_size_read = config->comp_size_read;
 
 	video->frame_rate = 30;
+	video->jpeg_hq_quality = 1;
 	video->dev = &pdev->dev;
 	spin_lock_init(&video->lock);
 	mutex_init(&video->video_lock);

include/uapi/linux/aspeed-video.h

···
+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/*
+ * Copyright (C) 2021 ASPEED Technology Inc.
+ */
+
+#ifndef _UAPI_LINUX_ASPEED_VIDEO_H
+#define _UAPI_LINUX_ASPEED_VIDEO_H
+
+#include <linux/v4l2-controls.h>
+
+#define V4L2_CID_ASPEED_HQ_MODE			(V4L2_CID_USER_ASPEED_BASE  + 1)
+#define V4L2_CID_ASPEED_HQ_JPEG_QUALITY		(V4L2_CID_USER_ASPEED_BASE  + 2)
+
+#endif /* _UAPI_LINUX_ASPEED_VIDEO_H */