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Message-ID: <20241105-csi_dcmipp_mp25-v2-10-b9fc8a7273c2@foss.st.com>
Date: Tue, 5 Nov 2024 08:49:13 +0100
From: Alain Volmat <alain.volmat@...s.st.com>
To: Hugues Fruchet <hugues.fruchet@...s.st.com>,
Mauro Carvalho Chehab
<mchehab@...nel.org>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre
Torgue <alexandre.torgue@...s.st.com>,
Hans Verkuil
<hverkuil-cisco@...all.nl>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Rob
Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor
Dooley <conor+dt@...nel.org>,
Philipp Zabel <p.zabel@...gutronix.de>
CC: <linux-media@...r.kernel.org>, <linux-stm32@...md-mailman.stormreply.com>,
<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
<devicetree@...r.kernel.org>, Alain Volmat <alain.volmat@...s.st.com>
Subject: [PATCH v2 10/15] media: stm32: dcmipp: avoid duplicated format on
enum in bytecap
Avoid duplication of enumerated pixelformat on the bytecap
video capture device. Indeed, since the bytecap format list
contains both CSI & parallel 16bits formats, ensure that same
pixelformat are not reported twice when performing enumeration
of supported formats.
Signed-off-by: Alain Volmat <alain.volmat@...s.st.com>
---
.../st/stm32/stm32-dcmipp/dcmipp-bytecap.c | 42 +++++++++++-----------
1 file changed, 21 insertions(+), 21 deletions(-)
diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c
index 99732d19dc4d5f4692588118eadb236d4ed9c8a1..8f5f69a3afc413b49d82303cd4d98da15f62e34d 100644
--- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c
+++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c
@@ -268,34 +268,34 @@ static int dcmipp_bytecap_enum_fmt_vid_cap(struct file *file, void *priv,
{
const struct dcmipp_bytecap_pix_map *vpix;
unsigned int index = f->index;
- unsigned int i;
+ unsigned int i, prev_pixelformat = 0;
- if (f->mbus_code) {
- /*
- * If a media bus code is specified, only enumerate formats
- * compatible with it.
- */
- for (i = 0; i < ARRAY_SIZE(dcmipp_bytecap_pix_map_list); i++) {
- vpix = &dcmipp_bytecap_pix_map_list[i];
- if (vpix->code != f->mbus_code)
- continue;
+ /*
+ * List up all formats (or only ones matching f->mbus_code), taking
+ * care of removing duplicated entries (due to support of both
+ * parallel & csi 16 bits formats
+ */
+ for (i = 0; i < ARRAY_SIZE(dcmipp_bytecap_pix_map_list); i++) {
+ vpix = &dcmipp_bytecap_pix_map_list[i];
+ /* Skip formats not matching requested mbus code */
+ if (f->mbus_code && vpix->code != f->mbus_code)
+ continue;
- if (index == 0)
- break;
+ /* Skip duplicated pixelformat */
+ if (vpix->pixelformat == prev_pixelformat)
+ continue;
- index--;
- }
+ prev_pixelformat = vpix->pixelformat;
- if (i == ARRAY_SIZE(dcmipp_bytecap_pix_map_list))
- return -EINVAL;
- } else {
- /* Otherwise, enumerate all formats. */
- if (f->index >= ARRAY_SIZE(dcmipp_bytecap_pix_map_list))
- return -EINVAL;
+ if (index == 0)
+ break;
- vpix = &dcmipp_bytecap_pix_map_list[f->index];
+ index--;
}
+ if (i == ARRAY_SIZE(dcmipp_bytecap_pix_map_list))
+ return -EINVAL;
+
f->pixelformat = vpix->pixelformat;
return 0;
--
2.25.1
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