linux-kernel - [PATCH v16 02/20] media: add V4L2_SUBDEV_FL

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Message-Id: <20221215121634.287100-3-tomi.valkeinen@ideasonboard.com>
Date:   Thu, 15 Dec 2022 14:16:16 +0200
From:   Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
To:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        sakari.ailus@...ux.intel.com,
        Jacopo Mondi <jacopo+renesas@...ndi.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        niklas.soderlund+renesas@...natech.se,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        satish.nagireddy@...cruise.com, Tomasz Figa <tfiga@...omium.org>
Cc:     Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Subject: [PATCH v16 02/20] media: add V4L2_SUBDEV_FL_STREAMS

Add subdev flag V4L2_SUBDEV_FL_STREAMS. It is used to indicate that the
subdev supports the new API with multiplexed streams (routing, stream
configs).

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
---
 include/media/v4l2-subdev.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 2f80c9c818ed..4be0a590c7c7 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -879,6 +879,17 @@ struct v4l2_subdev_internal_ops {
  * should set this flag.
  */
 #define V4L2_SUBDEV_FL_HAS_EVENTS		(1U << 3)
+/*
+ * Set this flag if this subdev supports multiplexed streams. This means
+ * that the driver supports routing and handles the stream parameter in its
+ * v4l2_subdev_pad_ops handlers. More specifically, this means:
+ *
+ * - Centrally managed subdev active state is enabled
+ * - Legacy pad config is _not_ supported (state->pads is NULL)
+ * - Routing ioctls are available
+ * - Multiple streams per pad are supported
+ */
+#define V4L2_SUBDEV_FL_STREAMS			(1U << 4)
 
 struct regulator_bulk_data;
 
-- 
2.34.1