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The patches were generated from the RPi repo with the following command: git format-patch v6.6.34..rpi-6.1.y Some patches needed rebasing and, as usual, the applied and reverted, wireless drivers, Github workflows, READMEs and defconfigs patches were removed. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
160 lines
4.7 KiB
Diff
160 lines
4.7 KiB
Diff
From 04a0aa6bc230d50a393db7bf4449ddb0c4813212 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Fri, 29 Jul 2022 17:46:49 +0100
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Subject: [PATCH 0386/1085] media: video-mux: Read CSI2 config from FW, and
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pass to receiver
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There is no obligation for all source devices on a video-mux to
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require the same bus configuration, so read the configuration
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from the sink ports, and relay via get_mbus_config on the source
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port.
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If the sources support get_mbus_config, then call that first.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/media/platform/video-mux.c | 73 ++++++++++++++++++++++++++++--
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1 file changed, 69 insertions(+), 4 deletions(-)
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--- a/drivers/media/platform/video-mux.c
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+++ b/drivers/media/platform/video-mux.c
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@@ -20,10 +20,27 @@
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#include <media/v4l2-mc.h>
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#include <media/v4l2-subdev.h>
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+struct video_mux_asd {
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+ struct v4l2_async_connection base;
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+ unsigned int port;
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+};
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+
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+static inline struct video_mux_asd *to_video_mux_asd(struct v4l2_async_connection *asd)
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+{
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+ return container_of(asd, struct video_mux_asd, base);
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+}
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+
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+struct video_mux_pad_cfg {
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+ unsigned int num_lanes;
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+ bool non_continuous;
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+ struct v4l2_subdev *source;
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+};
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+
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struct video_mux {
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struct v4l2_subdev subdev;
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struct v4l2_async_notifier notifier;
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struct media_pad *pads;
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+ struct video_mux_pad_cfg *cfg;
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struct mux_control *mux;
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struct mutex lock;
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int active;
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@@ -301,10 +318,34 @@ static int video_mux_init_cfg(struct v4l
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return 0;
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}
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+static int video_mux_get_mbus_config(struct v4l2_subdev *sd,
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+ unsigned int pad,
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+ struct v4l2_mbus_config *cfg)
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+{
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+ struct video_mux *vmux = v4l2_subdev_to_video_mux(sd);
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+ int ret;
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+
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+ ret = v4l2_subdev_call(vmux->cfg[vmux->active].source, pad, get_mbus_config,
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+ 0, cfg);
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+
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+ if (ret != -ENOIOCTLCMD)
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+ return ret;
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+
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+ cfg->type = V4L2_MBUS_CSI2_DPHY;
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+ cfg->bus.mipi_csi2.num_data_lanes = vmux->cfg[vmux->active].num_lanes;
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+
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+ /* Support for non-continuous CSI-2 clock is missing in pdate mode */
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+ if (vmux->cfg[vmux->active].non_continuous)
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+ cfg->bus.mipi_csi2.flags |= V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK;
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+
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+ return 0;
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+};
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+
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static const struct v4l2_subdev_pad_ops video_mux_pad_ops = {
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.init_cfg = video_mux_init_cfg,
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.get_fmt = v4l2_subdev_get_fmt,
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.set_fmt = video_mux_set_format,
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+ .get_mbus_config = video_mux_get_mbus_config,
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};
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static const struct v4l2_subdev_ops video_mux_subdev_ops = {
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@@ -317,6 +358,9 @@ static int video_mux_notify_bound(struct
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struct v4l2_async_connection *asd)
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{
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struct video_mux *vmux = notifier_to_video_mux(notifier);
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+ unsigned int port = to_video_mux_asd(asd)->port;
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+
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+ vmux->cfg[port].source = sd;
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return v4l2_create_fwnode_links(sd, &vmux->subdev);
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}
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@@ -334,7 +378,7 @@ static int video_mux_async_register(stru
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v4l2_async_subdev_nf_init(&vmux->notifier, &vmux->subdev);
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for (i = 0; i < num_input_pads; i++) {
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- struct v4l2_async_connection *asd;
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+ struct video_mux_asd *asd;
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struct fwnode_handle *ep, *remote_ep;
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ep = fwnode_graph_get_endpoint_by_id(
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@@ -352,8 +396,7 @@ static int video_mux_async_register(stru
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fwnode_handle_put(remote_ep);
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asd = v4l2_async_nf_add_fwnode_remote(&vmux->notifier, ep,
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- struct v4l2_async_connection);
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-
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+ struct video_mux_asd);
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fwnode_handle_put(ep);
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if (IS_ERR(asd)) {
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@@ -362,6 +405,8 @@ static int video_mux_async_register(stru
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if (ret != -EEXIST)
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goto err_nf_cleanup;
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}
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+
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+ asd->port = i;
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}
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vmux->notifier.ops = &video_mux_notify_ops;
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@@ -387,6 +432,9 @@ static int video_mux_probe(struct platfo
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{
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struct device_node *np = pdev->dev.of_node;
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struct device *dev = &pdev->dev;
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+ struct v4l2_fwnode_endpoint fwnode_ep = {
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+ .bus_type = V4L2_MBUS_CSI2_DPHY
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+ };
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struct device_node *ep;
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struct video_mux *vmux;
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unsigned int num_pads = 0;
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@@ -433,10 +481,27 @@ static int video_mux_probe(struct platfo
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if (!vmux->pads)
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return -ENOMEM;
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- for (i = 0; i < num_pads; i++)
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+ vmux->cfg = devm_kcalloc(dev, num_pads, sizeof(*vmux->cfg), GFP_KERNEL);
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+ if (!vmux->cfg)
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+ return -ENOMEM;
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+
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+ for (i = 0; i < num_pads; i++) {
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vmux->pads[i].flags = (i < num_pads - 1) ? MEDIA_PAD_FL_SINK
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: MEDIA_PAD_FL_SOURCE;
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+ ep = of_graph_get_endpoint_by_regs(pdev->dev.of_node, i, 0);
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+ if (ep) {
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+ ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &fwnode_ep);
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+ if (!ret) {
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+ /* Get number of data lanes */
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+ vmux->cfg[i].num_lanes = fwnode_ep.bus.mipi_csi2.num_data_lanes;
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+ vmux->cfg[i].non_continuous = fwnode_ep.bus.mipi_csi2.flags &
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+ V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK;
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+ }
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+ of_node_put(ep);
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+ }
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+ }
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+
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vmux->subdev.entity.function = MEDIA_ENT_F_VID_MUX;
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ret = media_entity_pads_init(&vmux->subdev.entity, num_pads,
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vmux->pads);
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