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From:   Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
To:     linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
        sakari.ailus@linux.intel.com,
        Jacopo Mondi <jacopo+renesas@jmondi.org>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        niklas.soderlund+renesas@ragnatech.se,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Hans Verkuil <hverkuil-cisco@xs4all.nl>,
        satish.nagireddy@getcruise.com, Tomasz Figa <tfiga@chromium.org>
Cc:     Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Subject: [PATCH v16 02/20] media: add V4L2_SUBDEV_FL_STREAMS
Date:   Thu, 15 Dec 2022 14:16:16 +0200
Message-Id: <20221215121634.287100-3-tomi.valkeinen@ideasonboard.com>
In-Reply-To: <20221215121634.287100-1-tomi.valkeinen@ideasonboard.com>
References: <20221215121634.287100-1-tomi.valkeinen@ideasonboard.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

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@ideasonboard.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