media: v4l2-subdev: Introduce [get|set]_mbus_config pad ops (38df0b85) · Commits · 戴 / test

drivers/media/v4l2-core/v4l2-subdev.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -309,6 +309,20 @@ static int call_enum_dv_timings(struct v4l2_subdev *sd,
		sd->ops->pad->enum_dv_timings(sd, dvt);
		}

		static int call_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad,
		struct v4l2_mbus_config *config)
		{
		return check_pad(sd, pad) ? :
		sd->ops->pad->get_mbus_config(sd, pad, config);
		}

		static int call_set_mbus_config(struct v4l2_subdev *sd, unsigned int pad,
		struct v4l2_mbus_config *config)
		{
		return check_pad(sd, pad) ? :
		sd->ops->pad->get_mbus_config(sd, pad, config);
		}

		static const struct v4l2_subdev_pad_ops v4l2_subdev_call_pad_wrappers = {
		.get_fmt = call_get_fmt,
		.set_fmt = call_set_fmt,
		@@ -321,6 +335,8 @@ static const struct v4l2_subdev_pad_ops v4l2_subdev_call_pad_wrappers = {
		.set_edid = call_set_edid,
		.dv_timings_cap = call_dv_timings_cap,
		.enum_dv_timings = call_enum_dv_timings,
		.get_mbus_config = call_get_mbus_config,
		.set_mbus_config = call_set_mbus_config,
		};

		static const struct v4l2_subdev_video_ops v4l2_subdev_call_video_wrappers = {

include/media/v4l2-subdev.h

+28 −0

Original line number	Diff line number	Diff line
		@@ -670,6 +670,30 @@ struct v4l2_subdev_pad_config {
		*
		* @set_frame_desc: set the low level media bus frame parameters, @fd array
		* may be adjusted by the subdev driver to device capabilities.
		*
		* @get_mbus_config: get the media bus configuration of a remote sub-device.
		* The media bus configuration is usually retrieved from the
		* firmware interface at sub-device probe time, immediately
		* applied to the hardware and eventually adjusted by the
		* driver. Remote sub-devices (usually video receivers) shall
		* use this operation to query the transmitting end bus
		* configuration in order to adjust their own one accordingly.
		* Callers should make sure they get the most up-to-date as
		* possible configuration from the remote end, likely calling
		* this operation as close as possible to stream on time. The
		* operation shall fail if the pad index it has been called on
		* is not valid or in case of unrecoverable failures.
		*
		* @set_mbus_config: set the media bus configuration of a remote sub-device.
		* This operations is intended to allow, in combination with
		* the get_mbus_config operation, the negotiation of media bus
		* configuration parameters between media sub-devices. The
		* operation shall not fail if the requested configuration is
		* not supported, but the driver shall update the content of
		* the %config argument to reflect what has been actually
		* applied to the hardware. The operation shall fail if the
		* pad index it has been called on is not valid or in case of
		* unrecoverable failures.
		*/
		struct v4l2_subdev_pad_ops {
		int (init_cfg)(struct v4l2_subdev sd,
		@@ -710,6 +734,10 @@ struct v4l2_subdev_pad_ops {
		struct v4l2_mbus_frame_desc *fd);
		int (set_frame_desc)(struct v4l2_subdev sd, unsigned int pad,
		struct v4l2_mbus_frame_desc *fd);
		int (get_mbus_config)(struct v4l2_subdev sd, unsigned int pad,
		struct v4l2_mbus_config *config);
		int (set_mbus_config)(struct v4l2_subdev sd, unsigned int pad,
		struct v4l2_mbus_config *config);
		};

		/**

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