Skip to content

IMX500: Add support for rotation and image flip #6584

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 2 commits into
base: rpi-6.6.y
Choose a base branch
from
Open

IMX500: Add support for rotation and image flip #6584

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
fb9eca3
media: i2c: imx500: Add support for rotation
katsuykk Jan 7, 2025
8cc163a
media: i2c: imx500: Add support for image flip
katsuykk Jan 7, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
21 changes: 21 additions & 0 deletions drivers/media/i2c/imx500.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -214,6 +214,9 @@
#define IMX500_COLOUR_BALANCE_STEP 0x0001
#define IMX500_COLOUR_BALANCE_DEFAULT 0x0100

/* Rotate angle */
#define IMX500_REG_ADDR_ROTATION CCI_REG8(0xD680)

/* Embedded sizes */
#define IMX500_MAX_EMBEDDED_SIZE \
(2 * ((((IMX500_PIXEL_ARRAY_WIDTH * 10) >> 3) + 15) & ~15))
Expand All @@ -235,6 +238,7 @@ enum pad_types { IMAGE_PAD, METADATA_PAD, NUM_PADS };

#define V4L2_CID_USER_IMX500_INFERENCE_WINDOW (V4L2_CID_USER_IMX500_BASE + 0)
#define V4L2_CID_USER_IMX500_NETWORK_FW_FD (V4L2_CID_USER_IMX500_BASE + 1)
#define V4L2_CID_USER_IMX500_ROTATION (V4L2_CID_USER_IMX500_BASE + 2)
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Why does this need to be a custom control rather than V4L2_CID_ROTATE? (Documented in https://www.kernel.org/doc/html/latest/userspace-api/media/v4l/control.html)

How does this affect the resolution of the output image? Normally you'd rotate the 4056x3040 image to give a 3040x4056 output, so the output format needs to change.


#define ONE_MIB (1024 * 1024)

Expand Down Expand Up @@ -1974,6 +1978,9 @@ static int imx500_set_ctrl(struct v4l2_ctrl *ctrl)
sizeof(struct v4l2_rect));
ret = imx500_set_inference_window(imx500);
break;
case V4L2_CID_USER_IMX500_ROTATION:
ret = cci_write(imx500->regmap, IMX500_REG_ADDR_ROTATION, ctrl->val, NULL);
break;
default:
dev_info(&client->dev,
"ctrl(id:0x%x,val:0x%x) is not handled\n", ctrl->id,
Expand Down Expand Up @@ -2828,6 +2835,19 @@ static const struct v4l2_ctrl_config network_fw_fd = {
.def = -1,
};

/* Custom control for rotation angle */
static const struct v4l2_ctrl_config rotation_angle = {
.name = "IMX500 Rotation Angle",
.id = V4L2_CID_USER_IMX500_ROTATION,
.ops = &imx500_ctrl_ops,
.type = V4L2_CTRL_TYPE_INTEGER,
.flags = V4L2_CTRL_FLAG_EXECUTE_ON_WRITE,
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Do you really need to rewrite the register even if setting it to the same value?

.min = 0,
.max = 3,
.step = 1,
.def = 0,
};

/* Initialize control handlers */
static int imx500_init_controls(struct imx500 *imx500)
{
Expand Down Expand Up @@ -2891,6 +2911,7 @@ static int imx500_init_controls(struct imx500 *imx500)
v4l2_ctrl_new_custom(ctrl_hdlr, &inf_window_ctrl, NULL);
imx500->network_fw_ctrl =
v4l2_ctrl_new_custom(ctrl_hdlr, &network_fw_fd, NULL);
v4l2_ctrl_new_custom(ctrl_hdlr, &rotation_angle, NULL);

if (ctrl_hdlr->error) {
ret = ctrl_hdlr->error;
Expand Down