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From bf722c887dd9d0d24493edd20c61b2fcde5f66dd Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Tue, 19 May 2020 11:46:47 +0100
Subject: [PATCH] media: bcm2835-unicam: Retain packing information
on G_FMT
The change to retrieve the pixel format always on g_fmt didn't
check whether the native or unpacked version of the format
had been requested, and always returned the packed one.
Correct this so that the packing setting is retained whereever
possible.
Fixes "9d59e89 media: bcm2835-unicam: Re-fetch mbus code from subdev
on a g_fmt call"
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
.../media/platform/bcm2835/bcm2835-unicam.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
+++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
@@ -970,8 +970,23 @@ static int unicam_g_fmt_vid_cap(struct f
if (!fmt)
return -EINVAL;
- node->fmt = fmt;
- node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
+ if (node->fmt != fmt) {
+ /*
+ * The sensor format has changed so the pixelformat needs to
+ * be updated. Try and retain the packed/unpacked choice if
+ * at all possible.
+ */
+ if (node->fmt->repacked_fourcc ==
+ node->v_fmt.fmt.pix.pixelformat)
+ /* Using the repacked format */
+ node->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
+ else
+ /* Using the native format */
+ node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
+
+ node->fmt = fmt;
+ }
+
*f = node->v_fmt;
return 0;
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