linux-kernel - [PATCH] media: verisilicon: Export only needed pixels formats.

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Message-ID: <20250624122938.62004-1-benjamin.gaignard@collabora.com>
Date: Tue, 24 Jun 2025 14:29:38 +0200
From: Benjamin Gaignard <benjamin.gaignard@...labora.com>
To: nicolas.dufresne@...labora.com,
	p.zabel@...gutronix.de,
	mchehab@...nel.org,
	hverkuil@...all.nl
Cc: linux-media@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	kernel@...labora.com,
	Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH] media: verisilicon: Export only needed pixels formats.

When enumerating the pixels formats check if the context
request to only export post-processed pixels formats.
The exception is when V4L2_FMTDESC_FLAG_ENUM_ALL is set, we
need to export all pixels formats.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
Fixes: bcd4f091cf1e ("media: verisilicon: Use V4L2_FMTDESC_FLAG_ENUM_ALL flag")
---
 drivers/media/platform/verisilicon/hantro_v4l2.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index 7c3515cf7d64..7869faf921f4 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -222,6 +222,7 @@ static int vidioc_enum_fmt(struct file *file, void *priv,
 	unsigned int num_fmts, i, j = 0;
 	bool skip_mode_none, enum_all_formats;
 	u32 index = f->index & ~V4L2_FMTDESC_FLAG_ENUM_ALL;
+	bool need_postproc = ctx->need_postproc;
 
 	/*
 	 * If the V4L2_FMTDESC_FLAG_ENUM_ALL flag is set, we want to enumerate all
@@ -230,6 +231,9 @@ static int vidioc_enum_fmt(struct file *file, void *priv,
 	enum_all_formats = !!(f->index & V4L2_FMTDESC_FLAG_ENUM_ALL);
 	f->index = index;
 
+	if (enum_all_formats)
+		need_postproc = HANTRO_AUTO_POSTPROC;
+
 	/*
 	 * When dealing with an encoder:
 	 *  - on the capture side we want to filter out all MODE_NONE formats.
@@ -242,7 +246,7 @@ static int vidioc_enum_fmt(struct file *file, void *priv,
 	 */
 	skip_mode_none = capture == ctx->is_encoder;
 
-	formats = hantro_get_formats(ctx, &num_fmts, HANTRO_AUTO_POSTPROC);
+	formats = hantro_get_formats(ctx, &num_fmts, need_postproc);
 	for (i = 0; i < num_fmts; i++) {
 		bool mode_none = formats[i].codec_mode == HANTRO_MODE_NONE;
 		fmt = &formats[i];
-- 
2.43.0