[PATCH] media: mali-c55: Disable colour space conversion for RGB outputs

[David Carlier <devnexen@gmail.com>]

The colour space conversion block is only programmed for YUV formats,
and its configuration is kept across streaming sessions. An RGB stream
started after a YUV one thus still converts its output to YUV.

Clear the conversion configuration for non-YUV formats.

Fixes: d5f281f3dd29 ("media: mali-c55: Add Mali-C55 ISP driver")
Cc: stable@vger.kernel.org
Assisted-by: LLM
Signed-off-by: David Carlier <devnexen@gmail.com>
---
 drivers/media/platform/arm/mali-c55/mali-c55-capture.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/media/platform/arm/mali-c55/mali-c55-capture.c b/drivers/media/platform/arm/mali-c55/mali-c55-capture.c
index ff01553026fb..2425a069a939 100644
--- a/drivers/media/platform/arm/mali-c55/mali-c55-capture.c
+++ b/drivers/media/platform/arm/mali-c55/mali-c55-capture.c
@@ -577,6 +577,10 @@ static void mali_c55_cap_dev_format_configure(struct mali_c55_cap_dev *cap_dev)
 				MALI_C55_REG_CS_CONV_CONFIG,
 				MALI_C55_CS_CONV_FILTER_MASK,
 				MALI_C55_CS_CONV_FILTER_ENABLE);
+	} else {
+		/* Don't inherit the conversion set up by a previous YUV stream. */
+		mali_c55_cap_dev_write(cap_dev, MALI_C55_REG_CS_CONV_CONFIG,
+				       0);
 	}
 }
 
-- 
2.55.0