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Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0676-media-bcm2835-unicam-Re-fetch-mbus-code-from-subdev-.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0676-media-bcm2835-unicam-Re-fetch-mbus-code-from-subdev-.patch49
1 files changed, 49 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0676-media-bcm2835-unicam-Re-fetch-mbus-code-from-subdev-.patch b/target/linux/bcm27xx/patches-5.4/950-0676-media-bcm2835-unicam-Re-fetch-mbus-code-from-subdev-.patch
new file mode 100644
index 0000000000..4d43c97e56
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0676-media-bcm2835-unicam-Re-fetch-mbus-code-from-subdev-.patch
@@ -0,0 +1,49 @@
+From 53d7c93a14d1e0804a96e3a21f472ba5ff033b14 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 21 Apr 2020 16:26:03 +0100
+Subject: [PATCH] media: bcm2835-unicam: Re-fetch mbus code from subdev
+ on a g_fmt call
+
+The sensor subdevice may change the Bayer order if a H/V flip is
+requested after a s_fmt call. Unicam g_fmt must call the subdev get_fmt
+in case this has happened and return out the correct format 4cc.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c | 21 ++++++++++++++++++-
+ 1 file changed, 20 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -967,11 +967,30 @@ static int unicam_enum_fmt_vid_cap(struc
+ static int unicam_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+ {
++ struct v4l2_mbus_framefmt mbus_fmt = {0};
+ struct unicam_node *node = video_drvdata(file);
++ struct unicam_device *dev = node->dev;
++ const struct unicam_fmt *fmt = NULL;
++ int ret;
+
+- if (node->pad_id == METADATA_PAD)
++ if (node->pad_id != IMAGE_PAD)
+ return -EINVAL;
+
++ /*
++ * If a flip has occurred in the sensor, the fmt code might have
++ * changed. So we will need to re-fetch the format from the subdevice.
++ */
++ ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
++ if (ret)
++ return -EINVAL;
++
++ /* Find the V4L2 format from mbus code. We must match a known format. */
++ fmt = find_format_by_code(mbus_fmt.code);
++ if (!fmt)
++ return -EINVAL;
++
++ node->fmt = fmt;
++ node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
+ *f = node->v_fmt;
+
+ return 0;