[PATCH v5 04/10] media: aspeed: refactor to gather format/compress settings

Jammy Huang
2021-11-18T07:41:23Z

Add API, aspeed_video_update_regs(), to gather format/compress settings
which are controlled by user.

Signed-off-by: Jammy Huang <jammy_huang@aspeedtech.com>
---
v5:
- no update
v4:
- no update
v3:
- no update
v2:
- update commit message
- update log to use v4l2_dbg rather than dprintk
---
drivers/media/platform/aspeed-video.c | 69 ++++++++++++++-------------
1 file changed, 35 insertions(+), 34 deletions(-)

diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
index e8dd0a7ebfc7..d2335d669fb3 100644
--- a/drivers/media/platform/aspeed-video.c
+++ b/drivers/media/platform/aspeed-video.c
@@ -967,20 +967,42 @@ static void aspeed_video_set_resolution(struct aspeed_video *video)
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;
+ u32 ctrl = 0;
u32 seq_ctrl = VE_SEQ_CTRL_JPEG_MODE;

+ v4l2_dbg(1, debug, &video->v4l2_dev, "framerate(%d)\n",
+ video->frame_rate);
+ v4l2_dbg(1, debug, &video->v4l2_dev, "subsample(%s)\n",
+ video->yuv420 ? "420" : "444");
+ v4l2_dbg(1, debug, &video->v4l2_dev, "compression quality(%d)\n",
+ video->jpeg_quality);
+
if (video->frame_rate)
ctrl |= FIELD_PREP(VE_CTRL_FRC, video->frame_rate);

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,
+ VE_SEQ_CTRL_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,
+ comp_ctrl);
+}
+
+static void aspeed_video_init_regs(struct aspeed_video *video)
+{
/* Unlock VE registers */
aspeed_video_write(video, VE_PROTECTION_KEY, VE_PROTECTION_KEY_UNLOCK);

@@ -995,9 +1017,8 @@ static void aspeed_video_init_regs(struct aspeed_video *video)
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_CTRL, VE_CTRL_AUTO_OR_CURSOR);
+ aspeed_video_write(video, VE_COMP_CTRL, VE_COMP_CTRL_RSVD);

/* Don't downscale */
aspeed_video_write(video, VE_SCALING_FACTOR, 0x10001000);
@@ -1326,27 +1347,6 @@ static const struct v4l2_ioctl_ops aspeed_video_ioctl_ops = {
.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,
@@ -1356,16 +1356,13 @@ static int aspeed_video_set_ctrl(struct v4l2_ctrl *ctrl)
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;
default:
return -EINVAL;
@@ -1393,6 +1390,8 @@ static void aspeed_video_resolution_work(struct work_struct *work)

aspeed_video_init_regs(video);

+ aspeed_video_update_regs(video);
+
aspeed_video_get_resolution(video);

if (video->detected_timings.width != video->active_timings.width ||
@@ -1504,6 +1503,8 @@ static int aspeed_video_start_streaming(struct vb2_queue *q,
video->perf.duration_max = 0;
video->perf.duration_min = 0xffffffff;

+ aspeed_video_update_regs(video);
+
rc = aspeed_video_start_frame(video);
if (rc) {
aspeed_video_bufs_done(video, VB2_BUF_STATE_QUEUED);
--
2.25.1