| From 487203abdef24b7d3cdd110f1b1e699fd22aa02c Mon Sep 17 00:00:00 2001 |
| From: Jacopo Mondi <jacopo+renesas@jmondi.org> |
| Date: Tue, 16 Jun 2020 16:12:36 +0200 |
| Subject: [PATCH]_mbus_config |
| pad ops |
| |
| Upstream https://patchwork.linuxtv.org/patch/64669/ |
| |
| Introduce two new pad operations to allow retrieving and configuring the |
| media bus parameters on a subdevice pad. |
| |
| The newly introduced operations aims to replace the s/g_mbus_config video |
| operations, which have been on their way for deprecation since a long |
| time. |
| |
| Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> |
| --- |
| include/media/v4l2-subdev.h | 27 +++++++++++++++++++++++++++ |
| 1 file changed, 27 insertions(+) |
| |
| --- a/include/media/v4l2-subdev.h |
| +++ b/include/media/v4l2-subdev.h |
| @@ -674,6 +674,29 @@ 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. |
| + * |
| + * @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. |
| */ |
| struct v4l2_subdev_pad_ops { |
| int (*init_cfg)(struct v4l2_subdev *sd, |
| @@ -714,6 +737,10 @@ 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); |
| }; |
| |
| /** |