From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: linux-media@vger.kernel.org
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
tomi.valkeinen@ideasonboard.com, bingbu.cao@intel.com,
hongju.wang@intel.com, hverkuil@xs4all.nl,
Andrey Konovalov <andrey.konovalov@linaro.org>,
Jacopo Mondi <jacopo.mondi@ideasonboard.com>,
Dmitry Perchanov <dmitry.perchanov@intel.com>,
"Ng, Khai Wen" <khai.wen.ng@intel.com>,
Alain Volmat <alain.volmat@foss.st.com>
Subject: [PATCH v9 08/46] media: Documentation: Additional streams generally don't harm capture
Date: Tue, 16 Apr 2024 22:32:41 +0300 [thread overview]
Message-ID: <20240416193319.778192-9-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <20240416193319.778192-1-sakari.ailus@linux.intel.com>
Having extra streams on the source end of the link that cannot be captured
by the sink sub-device generally are not an issue, at least not on CSI-2
bus. Still document that there may be hardware-specific limitations. For
example on parallel bus this might not work on all cases.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
Documentation/userspace-api/media/v4l/dev-subdev.rst | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/Documentation/userspace-api/media/v4l/dev-subdev.rst b/Documentation/userspace-api/media/v4l/dev-subdev.rst
index f375b820ab68..b76e02e54512 100644
--- a/Documentation/userspace-api/media/v4l/dev-subdev.rst
+++ b/Documentation/userspace-api/media/v4l/dev-subdev.rst
@@ -529,9 +529,9 @@ the its sink pad and allows to route them individually to one of its source
pads.
Subdevice drivers that support multiplexed streams are compatible with
-non-multiplexed subdev drivers, but, of course, require a routing configuration
-where the link between those two types of drivers contains only a single
-stream.
+non-multiplexed subdev drivers. However, if the driver at the sink end of a link
+does not support streams, then only stream 0 of source end may be captured.
+There may be additional limitations specific to the sink device.
Understanding streams
^^^^^^^^^^^^^^^^^^^^^
--
2.39.2
next prev parent reply other threads:[~2024-04-16 19:33 UTC|newest]
Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-16 19:32 [PATCH v9 00/46] Generic line based metadata support, internal pads Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 01/46] media: v4l2-subdev: Fix stream handling for crop API Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 02/46] media: v4l2-subdev: Clearly document that the crop API won't be extended Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 03/46] media: Documentation: Add "stream" into glossary Sakari Ailus
2024-04-19 16:02 ` Laurent Pinchart
2024-04-16 19:32 ` [PATCH v9 04/46] media: uapi: Add generic serial metadata mbus formats Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 05/46] media: uapi: Document which mbus format fields are valid for metadata Sakari Ailus
2024-04-19 16:05 ` Laurent Pinchart
2024-04-16 19:32 ` [PATCH v9 06/46] media: uapi: v4l: Add generic 8-bit metadata format definitions Sakari Ailus
2024-04-19 16:26 ` Laurent Pinchart
2024-04-23 7:04 ` Sakari Ailus
2024-04-23 7:32 ` Laurent Pinchart
2024-04-23 9:54 ` Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 07/46] media: v4l: Support line-based metadata capture Sakari Ailus
2024-04-19 16:30 ` Laurent Pinchart
2024-04-23 7:31 ` Sakari Ailus
2024-04-16 19:32 ` Sakari Ailus [this message]
2024-04-16 19:32 ` [PATCH v9 09/46] media: Documentation: Document embedded data guidelines for camera sensors Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 10/46] media: Documentation: v4l: Document internal sink pads Sakari Ailus
2024-04-19 18:49 ` Laurent Pinchart
2024-04-23 10:27 ` Sakari Ailus
2024-04-23 12:56 ` Laurent Pinchart
2024-04-23 16:06 ` Sakari Ailus
2025-02-26 9:16 ` Mirela Rabulea
2025-02-26 9:49 ` Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 11/46] media: Documentation: Document S_ROUTING behaviour Sakari Ailus
2024-04-19 17:17 ` Laurent Pinchart
2024-04-23 10:08 ` Sakari Ailus
2024-04-23 12:59 ` Laurent Pinchart
2024-04-23 13:33 ` Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 12/46] media: v4l: subdev: Add a function to lock two sub-device states, use it Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 13/46] media: v4l: subdev: Move G_ROUTING handling below S_ROUTING Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 14/46] media: v4l: subdev: Copy argument back to user also for S_ROUTING Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 15/46] media: v4l: subdev: Add len_routes field to struct v4l2_subdev_routing Sakari Ailus
2024-04-19 22:45 ` Laurent Pinchart
2024-04-23 10:45 ` Sakari Ailus
2024-04-23 12:54 ` Laurent Pinchart
2024-04-23 16:05 ` Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 16/46] media: v4l: subdev: Return routes set using S_ROUTING Sakari Ailus
2024-04-19 22:55 ` Laurent Pinchart
2024-04-23 10:49 ` Sakari Ailus
2024-04-23 11:41 ` Laurent Pinchart
2024-04-16 19:32 ` [PATCH v9 17/46] media: v4l: subdev: Add trivial set_routing support Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 18/46] media: ccs: No need to set streaming to false in power off Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 19/46] media: ccs: Move ccs_pm_get_init function up Sakari Ailus
2024-04-20 7:53 ` Laurent Pinchart
2024-04-16 19:32 ` [PATCH v9 20/46] media: ccs: Rename out label of ccs_start_streaming Sakari Ailus
2024-04-20 8:01 ` Laurent Pinchart
2024-04-16 19:32 ` [PATCH v9 21/46] media: ccs: Use {enable,disable}_streams operations Sakari Ailus
2024-04-20 7:57 ` Laurent Pinchart
2024-04-16 19:32 ` [PATCH v9 22/46] media: ccs: Track streaming state Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 23/46] media: ccs: Move ccs_validate_csi_data_format up Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 24/46] media: ccs: Support frame descriptors Sakari Ailus
2024-04-20 8:00 ` Laurent Pinchart
2024-04-16 19:32 ` [PATCH v9 25/46] media: uapi: v4l: subdev: Enable streams API Sakari Ailus
2024-04-16 19:32 ` [PATCH v9 26/46] media: mc: Add INTERNAL pad flag Sakari Ailus
2024-04-16 19:33 ` [PATCH v9 27/46] media: uapi: ccs: Add media bus code for MIPI CCS embedded data Sakari Ailus
2024-04-20 8:10 ` Laurent Pinchart
2024-10-23 7:35 ` Jacopo Mondi
2024-04-16 19:33 ` [PATCH v9 28/46] media: Documentation: Document non-CCS use of CCS embedded data format Sakari Ailus
2024-04-20 8:12 ` Laurent Pinchart
2024-04-16 19:33 ` [PATCH v9 29/46] media: Documentation: ccs: Document routing Sakari Ailus
2024-04-20 8:31 ` Laurent Pinchart
2024-04-23 11:06 ` Sakari Ailus
2024-04-16 19:33 ` [PATCH v9 30/46] media: ccs: Add support for embedded data stream Sakari Ailus
2024-04-20 8:59 ` Laurent Pinchart
2024-04-23 12:33 ` Sakari Ailus
2024-04-23 12:50 ` Laurent Pinchart
2024-04-23 13:29 ` Sakari Ailus
2024-04-16 19:33 ` [PATCH v9 31/46] media: ccs: Remove ccs_get_crop_compose helper Sakari Ailus
2024-04-20 9:04 ` Laurent Pinchart
2024-04-16 19:33 ` [PATCH v9 32/46] media: ccs: Rely on sub-device state locking Sakari Ailus
2024-04-20 9:16 ` Laurent Pinchart
2025-09-22 7:38 ` Sakari Ailus
2024-04-16 19:33 ` [PATCH v9 33/46] media: ccs: Compute binning configuration from sub-device state Sakari Ailus
2024-04-20 9:19 ` Laurent Pinchart
2024-04-16 19:33 ` [PATCH v9 34/46] media: ccs: Compute scaling " Sakari Ailus
2024-04-20 9:24 ` Laurent Pinchart
2024-04-16 19:33 ` [PATCH v9 35/46] media: ccs: Remove which parameter from ccs_propagate Sakari Ailus
2024-04-16 19:33 ` [PATCH v9 36/46] media: uapi: Add media bus code for ov2740 embedded data Sakari Ailus
2024-04-20 9:29 ` Laurent Pinchart
2025-09-22 7:47 ` Sakari Ailus
2024-04-16 19:33 ` [PATCH v9 37/46] media: ov2740: Fix LINK_FREQ and PIXEL_RATE control value reporting Sakari Ailus
2024-04-20 9:42 ` Laurent Pinchart
2024-04-24 9:15 ` Sakari Ailus
2024-04-16 19:33 ` [PATCH v9 38/46] media: ov2740: Remove shorthand variables Sakari Ailus
2024-04-20 9:30 ` Laurent Pinchart
2024-04-16 19:33 ` [PATCH v9 39/46] media: ov2740: Switch to {enable,disable}_streams Sakari Ailus
2024-04-16 19:33 ` [PATCH v9 40/46] media: ov2740: Track streaming state Sakari Ailus
2024-04-16 19:33 ` [PATCH v9 41/46] media: ov2740: Add support for embedded data Sakari Ailus
2024-04-20 9:38 ` Laurent Pinchart
2024-04-16 19:33 ` [PATCH v9 42/46] media: ov2740: Add generic sensor fwnode properties as controls Sakari Ailus
2024-04-20 9:40 ` Laurent Pinchart
2024-04-23 16:17 ` Sakari Ailus
2024-04-24 8:51 ` Laurent Pinchart
2024-04-16 19:33 ` [PATCH v9 43/46] media: ov2740: Add support for G_SELECTION IOCTL Sakari Ailus
2024-04-20 9:43 ` Laurent Pinchart
2024-04-16 19:33 ` [PATCH v9 44/46] media: v4l: Add V4L2_SUBDEV_ROUTE_FL_IMMUTABLE sub-device routing flag Sakari Ailus
2024-04-20 9:49 ` Laurent Pinchart
2024-04-16 19:33 ` [PATCH v9 45/46] media: ccs: Add IMMUTABLE route flag Sakari Ailus
2024-04-16 19:33 ` [PATCH v9 46/46] media: ov2740: " Sakari Ailus
2024-04-20 10:05 ` [PATCH v9 00/46] Generic line based metadata support, internal pads Laurent Pinchart
2024-09-30 13:20 ` Mirela Rabulea
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