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media: tvp5150: add input source selection of_graph support
This patch adds the of_graph support to describe the tvp input connections. Physical the TVP5150 has three ports: AIP1A, AIP1B and YOUT. As result of discussion [1],[2] the device-tree maps these ports 1:1. Look at the Documentation for more information. Since the TVP5150 is a converter/bridge the device-tree must contain at least 1-input and 1-output port. The mc-connectors and mc-links are only created if the device-tree contains the corresponding connector nodes. If more than one connector is available the media_entity_operations.link_setup() callback ensures that only one connector is active. [1] https://www.spinics.net/lists/linux-media/msg138545.html [2] https://www.spinics.net/lists/linux-media/msg138546.html Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Marco Felsch
Mauro Carvalho Chehab
parent
a080a92a6f
commit
0556f1d580
@ -32,6 +32,8 @@
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#define TVP5150_FIELD V4L2_FIELD_ALTERNATE
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#define TVP5150_COLORSPACE V4L2_COLORSPACE_SMPTE170M
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#define TVP5150_MAX_CONNECTORS 3 /* Check dt-bindings for more information */
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MODULE_DESCRIPTION("Texas Instruments TVP5150A/TVP5150AM1/TVP5151 video decoder driver");
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MODULE_AUTHOR("Mauro Carvalho Chehab");
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MODULE_LICENSE("GPL v2");
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@ -44,16 +46,25 @@ MODULE_PARM_DESC(debug, "Debug level (0-2)");
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#define dprintk0(__dev, __arg...) dev_dbg_lvl(__dev, 0, 0, __arg)
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enum tvp5150_pads {
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TVP5150_PAD_IF_INPUT,
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TVP5150_PAD_AIP1A,
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TVP5150_PAD_AIP1B,
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TVP5150_PAD_VID_OUT,
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TVP5150_NUM_PADS
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};
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struct tvp5150_connector {
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struct v4l2_fwnode_connector base;
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struct media_entity ent;
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struct media_pad pad;
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};
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struct tvp5150 {
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struct v4l2_subdev sd;
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#ifdef CONFIG_MEDIA_CONTROLLER
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struct media_pad pads[TVP5150_NUM_PADS];
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#endif
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struct tvp5150_connector connectors[TVP5150_MAX_CONNECTORS];
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unsigned int connectors_num;
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struct v4l2_ctrl_handler hdl;
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struct v4l2_rect rect;
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struct regmap *regmap;
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@ -1167,6 +1178,132 @@ static int tvp5150_enum_frame_size(struct v4l2_subdev *sd,
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return 0;
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}
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/****************************************************************************
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* Media entity ops
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****************************************************************************/
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#if defined(CONFIG_MEDIA_CONTROLLER)
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static int tvp5150_set_link(struct media_pad *connector_pad,
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struct media_pad *tvp5150_pad, u32 flags)
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{
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struct media_link *link;
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link = media_entity_find_link(connector_pad, tvp5150_pad);
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if (!link)
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return -EINVAL;
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link->flags = flags;
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link->reverse->flags = link->flags;
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return 0;
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}
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static int tvp5150_disable_all_input_links(struct tvp5150 *decoder)
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{
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struct media_pad *connector_pad;
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unsigned int i;
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int err;
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for (i = 0; i < TVP5150_NUM_PADS - 1; i++) {
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connector_pad = media_entity_remote_pad(&decoder->pads[i]);
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if (!connector_pad)
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continue;
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err = tvp5150_set_link(connector_pad, &decoder->pads[i], 0);
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if (err)
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return err;
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}
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return 0;
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}
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static int tvp5150_s_routing(struct v4l2_subdev *sd, u32 input, u32 output,
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u32 config);
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static int tvp5150_link_setup(struct media_entity *entity,
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const struct media_pad *tvp5150_pad,
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const struct media_pad *remote, u32 flags)
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{
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struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
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struct tvp5150 *decoder = to_tvp5150(sd);
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struct media_pad *other_tvp5150_pad =
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&decoder->pads[tvp5150_pad->index ^ 1];
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struct v4l2_fwnode_connector *v4l2c;
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bool is_svideo = false;
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unsigned int i;
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int err;
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/*
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* The TVP5150 state is determined by the enabled sink pad link(s).
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* Enabling or disabling the source pad link has no effect.
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*/
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if (tvp5150_pad->flags & MEDIA_PAD_FL_SOURCE)
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return 0;
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/* Check if the svideo connector should be enabled */
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for (i = 0; i < decoder->connectors_num; i++) {
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if (remote->entity == &decoder->connectors[i].ent) {
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v4l2c = &decoder->connectors[i].base;
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is_svideo = v4l2c->type == V4L2_CONN_SVIDEO;
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break;
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}
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}
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dev_dbg_lvl(sd->dev, 1, debug, "link setup '%s':%d->'%s':%d[%d]",
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remote->entity->name, remote->index,
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tvp5150_pad->entity->name, tvp5150_pad->index,
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flags & MEDIA_LNK_FL_ENABLED);
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if (is_svideo)
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dev_dbg_lvl(sd->dev, 1, debug,
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"link setup '%s':%d->'%s':%d[%d]",
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remote->entity->name, remote->index,
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other_tvp5150_pad->entity->name,
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other_tvp5150_pad->index,
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flags & MEDIA_LNK_FL_ENABLED);
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/*
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* The TVP5150 has an internal mux which allows the following setup:
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*
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* comp-connector1 --\
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* |---> AIP1A
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* /
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* svideo-connector -|
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* \
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* |---> AIP1B
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* comp-connector2 --/
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*
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* We can't rely on user space that the current connector gets disabled
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* first before enabling the new connector. Disable all active
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* connector links to be on the safe side.
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*/
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err = tvp5150_disable_all_input_links(decoder);
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if (err)
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return err;
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tvp5150_s_routing(sd, is_svideo ? TVP5150_SVIDEO : tvp5150_pad->index,
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flags & MEDIA_LNK_FL_ENABLED ? TVP5150_NORMAL :
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TVP5150_BLACK_SCREEN, 0);
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if (flags & MEDIA_LNK_FL_ENABLED) {
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/*
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* S-Video connector is conneted to both ports AIP1A and AIP1B.
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* Both links must be enabled in one-shot regardless which link
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* the user requests.
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*/
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if (is_svideo) {
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err = tvp5150_set_link((struct media_pad *)remote,
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other_tvp5150_pad, flags);
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if (err)
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return err;
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}
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}
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return 0;
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}
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static const struct media_entity_operations tvp5150_sd_media_ops = {
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.link_setup = tvp5150_link_setup,
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};
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#endif
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/****************************************************************************
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I2C Command
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****************************************************************************/
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@ -1314,6 +1451,76 @@ static int tvp5150_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
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return 0;
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}
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static int tvp5150_registered(struct v4l2_subdev *sd)
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{
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#if defined(CONFIG_MEDIA_CONTROLLER)
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struct tvp5150 *decoder = to_tvp5150(sd);
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unsigned int i;
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int ret;
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/*
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* Setup connector pads and links. Enable the link to the first
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* available connector per default.
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*/
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for (i = 0; i < decoder->connectors_num; i++) {
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struct media_entity *con = &decoder->connectors[i].ent;
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struct media_pad *pad = &decoder->connectors[i].pad;
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struct v4l2_fwnode_connector *v4l2c =
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&decoder->connectors[i].base;
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struct v4l2_connector_link *link =
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v4l2_connector_first_link(v4l2c);
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unsigned int port = link->fwnode_link.remote_port;
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unsigned int flags = i ? 0 : MEDIA_LNK_FL_ENABLED;
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bool is_svideo = v4l2c->type == V4L2_CONN_SVIDEO;
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pad->flags = MEDIA_PAD_FL_SOURCE;
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ret = media_entity_pads_init(con, 1, pad);
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if (ret < 0)
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goto err;
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ret = media_device_register_entity(sd->v4l2_dev->mdev, con);
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if (ret < 0)
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goto err;
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ret = media_create_pad_link(con, 0, &sd->entity, port, flags);
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if (ret < 0)
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goto err;
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if (is_svideo) {
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/*
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* Check tvp5150_link_setup() comments for more
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* information.
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*/
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link = v4l2_connector_last_link(v4l2c);
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port = link->fwnode_link.remote_port;
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ret = media_create_pad_link(con, 0, &sd->entity, port,
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flags);
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if (ret < 0)
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goto err;
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}
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/* Enable default input. */
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if (flags == MEDIA_LNK_FL_ENABLED) {
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decoder->input =
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is_svideo ? TVP5150_SVIDEO :
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port == 0 ? TVP5150_COMPOSITE0 :
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TVP5150_COMPOSITE1;
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tvp5150_selmux(sd);
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}
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}
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return 0;
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err:
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for (i = 0; i < decoder->connectors_num; i++)
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media_device_unregister_entity(&decoder->connectors[i].ent);
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return ret;
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#endif
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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static const struct v4l2_ctrl_ops tvp5150_ctrl_ops = {
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@ -1367,6 +1574,10 @@ static const struct v4l2_subdev_ops tvp5150_ops = {
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.pad = &tvp5150_pad_ops,
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};
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static const struct v4l2_subdev_internal_ops tvp5150_internal_ops = {
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.registered = tvp5150_registered,
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};
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/****************************************************************************
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I2C Client & Driver
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****************************************************************************/
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@ -1515,35 +1726,205 @@ static int tvp5150_init(struct i2c_client *c)
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return 0;
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}
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#if defined(CONFIG_MEDIA_CONTROLLER)
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static int tvp5150_mc_init(struct tvp5150 *decoder)
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{
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struct v4l2_subdev *sd = &decoder->sd;
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unsigned int i;
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sd->entity.ops = &tvp5150_sd_media_ops;
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sd->entity.function = MEDIA_ENT_F_ATV_DECODER;
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for (i = 0; i < TVP5150_NUM_PADS - 1; i++) {
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decoder->pads[i].flags = MEDIA_PAD_FL_SINK;
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decoder->pads[i].sig_type = PAD_SIGNAL_ANALOG;
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}
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decoder->pads[i].flags = MEDIA_PAD_FL_SOURCE;
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decoder->pads[i].sig_type = PAD_SIGNAL_DV;
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return media_entity_pads_init(&sd->entity, TVP5150_NUM_PADS,
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decoder->pads);
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}
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#else /* !defined(CONFIG_MEDIA_CONTROLLER) */
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static inline int tvp5150_mc_init(struct tvp5150 *decoder)
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{
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return 0;
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}
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#endif /* defined(CONFIG_MEDIA_CONTROLLER) */
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static int tvp5150_validate_connectors(struct tvp5150 *decoder)
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{
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struct device *dev = decoder->sd.dev;
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struct tvp5150_connector *tvpc;
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struct v4l2_fwnode_connector *v4l2c;
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unsigned int i;
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if (!decoder->connectors_num) {
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dev_err(dev, "No valid connector found\n");
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return -ENODEV;
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}
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for (i = 0; i < decoder->connectors_num; i++) {
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struct v4l2_connector_link *link0 = NULL;
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struct v4l2_connector_link *link1;
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tvpc = &decoder->connectors[i];
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v4l2c = &tvpc->base;
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if (v4l2c->type == V4L2_CONN_COMPOSITE) {
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if (v4l2c->nr_of_links != 1) {
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dev_err(dev, "Composite: connector needs 1 link\n");
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return -EINVAL;
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}
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link0 = v4l2_connector_first_link(v4l2c);
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if (!link0) {
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dev_err(dev, "Composite: invalid first link\n");
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return -EINVAL;
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}
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if (link0->fwnode_link.remote_id == 1) {
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dev_err(dev, "Composite: invalid endpoint id\n");
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return -EINVAL;
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}
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}
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if (v4l2c->type == V4L2_CONN_SVIDEO) {
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if (v4l2c->nr_of_links != 2) {
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dev_err(dev, "SVideo: connector needs 2 links\n");
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return -EINVAL;
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}
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link0 = v4l2_connector_first_link(v4l2c);
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if (!link0) {
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dev_err(dev, "SVideo: invalid first link\n");
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return -EINVAL;
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}
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link1 = v4l2_connector_last_link(v4l2c);
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if (link0->fwnode_link.remote_port ==
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link1->fwnode_link.remote_port) {
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dev_err(dev, "SVideo: invalid link setup\n");
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return -EINVAL;
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}
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}
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}
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return 0;
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}
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static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np)
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{
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struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
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struct device_node *ep;
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unsigned int flags;
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int ret = 0;
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struct device *dev = decoder->sd.dev;
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struct v4l2_fwnode_endpoint bus_cfg = {
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.bus_type = V4L2_MBUS_UNKNOWN
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};
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struct device_node *ep_np;
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struct tvp5150_connector *tvpc;
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struct v4l2_fwnode_connector *v4l2c;
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unsigned int flags, ep_num;
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unsigned int i;
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int ret;
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ep = of_graph_get_next_endpoint(np, NULL);
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if (!ep)
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/* At least 1 output and 1 input */
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ep_num = of_graph_get_endpoint_count(np);
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if (ep_num < 2 || ep_num > 5) {
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dev_err(dev, "At least 1 input and 1 output must be connected to the device.\n");
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return -EINVAL;
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}
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ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg);
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/* Layout if all connectors are used:
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*
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* tvp-5150 port@0 (AIP1A)
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* endpoint@0 -----------> Comp0-Con port
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* endpoint@1 --------+--> Svideo-Con port
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* tvp-5150 port@1 (AIP1B) |
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* endpoint@1 --------+
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* endpoint@0 -----------> Comp1-Con port
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* tvp-5150 port@2
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* endpoint (video bitstream output at YOUT[0-7] parallel bus)
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*/
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for_each_endpoint_of_node(np, ep_np) {
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struct fwnode_handle *ep_fwnode = of_fwnode_handle(ep_np);
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unsigned int next_connector = decoder->connectors_num;
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struct of_endpoint ep;
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of_graph_parse_endpoint(ep_np, &ep);
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if (ep.port > 1 || ep.id > 1) {
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dev_dbg(dev, "Ignore connector on port@%u/ep@%u\n",
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ep.port, ep.id);
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continue;
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}
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tvpc = &decoder->connectors[next_connector];
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v4l2c = &tvpc->base;
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if (ep.port == 0 || (ep.port == 1 && ep.id == 0)) {
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ret = v4l2_fwnode_connector_parse(ep_fwnode, v4l2c);
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if (ret)
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goto err_put;
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ret = v4l2_fwnode_connector_add_link(ep_fwnode, v4l2c);
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if (ret)
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goto err_put;
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decoder->connectors_num++;
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} else {
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/* Adding the 2nd svideo link */
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for (i = 0; i < TVP5150_MAX_CONNECTORS; i++) {
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tvpc = &decoder->connectors[i];
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v4l2c = &tvpc->base;
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if (v4l2c->type == V4L2_CONN_SVIDEO)
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break;
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}
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ret = v4l2_fwnode_connector_add_link(ep_fwnode, v4l2c);
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if (ret)
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goto err_put;
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}
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}
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ret = tvp5150_validate_connectors(decoder);
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if (ret)
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goto err;
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goto err_free;
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for (i = 0; i < decoder->connectors_num; i++) {
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tvpc = &decoder->connectors[i];
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v4l2c = &tvpc->base;
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tvpc->ent.flags = MEDIA_ENT_FL_CONNECTOR;
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tvpc->ent.function = v4l2c->type == V4L2_CONN_SVIDEO ?
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MEDIA_ENT_F_CONN_SVIDEO : MEDIA_ENT_F_CONN_COMPOSITE;
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tvpc->ent.name = devm_kasprintf(dev, GFP_KERNEL, "%s %s",
|
||||
v4l2c->name, v4l2c->label ?
|
||||
v4l2c->label : "");
|
||||
}
|
||||
|
||||
ep_np = of_graph_get_endpoint_by_regs(np, TVP5150_PAD_VID_OUT, 0);
|
||||
if (!ep_np) {
|
||||
dev_err(dev, "Error no output endpoint available\n");
|
||||
goto err_free;
|
||||
}
|
||||
ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_np), &bus_cfg);
|
||||
of_node_put(ep_np);
|
||||
if (ret)
|
||||
goto err_free;
|
||||
|
||||
flags = bus_cfg.bus.parallel.flags;
|
||||
|
||||
if (bus_cfg.bus_type == V4L2_MBUS_PARALLEL &&
|
||||
!(flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH &&
|
||||
flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH &&
|
||||
flags & V4L2_MBUS_FIELD_EVEN_LOW)) {
|
||||
ret = -EINVAL;
|
||||
goto err;
|
||||
goto err_free;
|
||||
}
|
||||
|
||||
decoder->mbus_type = bus_cfg.bus_type;
|
||||
|
||||
err:
|
||||
of_node_put(ep);
|
||||
return 0;
|
||||
|
||||
err_put:
|
||||
of_node_put(ep_np);
|
||||
err_free:
|
||||
for (i = 0; i < TVP5150_MAX_CONNECTORS; i++)
|
||||
v4l2_fwnode_connector_free(&decoder->connectors[i].base);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -1592,22 +1973,13 @@ static int tvp5150_probe(struct i2c_client *c)
|
||||
}
|
||||
|
||||
v4l2_i2c_subdev_init(sd, c, &tvp5150_ops);
|
||||
sd->internal_ops = &tvp5150_internal_ops;
|
||||
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
||||
|
||||
#if defined(CONFIG_MEDIA_CONTROLLER)
|
||||
core->pads[TVP5150_PAD_IF_INPUT].flags = MEDIA_PAD_FL_SINK;
|
||||
core->pads[TVP5150_PAD_IF_INPUT].sig_type = PAD_SIGNAL_ANALOG;
|
||||
core->pads[TVP5150_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE;
|
||||
core->pads[TVP5150_PAD_VID_OUT].sig_type = PAD_SIGNAL_DV;
|
||||
|
||||
sd->entity.function = MEDIA_ENT_F_ATV_DECODER;
|
||||
|
||||
res = media_entity_pads_init(&sd->entity, TVP5150_NUM_PADS, core->pads);
|
||||
if (res < 0)
|
||||
res = tvp5150_mc_init(core);
|
||||
if (res)
|
||||
return res;
|
||||
|
||||
#endif
|
||||
|
||||
res = tvp5150_detect_version(core);
|
||||
if (res < 0)
|
||||
return res;
|
||||
@ -1668,11 +2040,16 @@ static int tvp5150_remove(struct i2c_client *c)
|
||||
{
|
||||
struct v4l2_subdev *sd = i2c_get_clientdata(c);
|
||||
struct tvp5150 *decoder = to_tvp5150(sd);
|
||||
unsigned int i;
|
||||
|
||||
dev_dbg_lvl(sd->dev, 1, debug,
|
||||
"tvp5150.c: removing tvp5150 adapter on address 0x%x\n",
|
||||
c->addr << 1);
|
||||
|
||||
for (i = 0; i < decoder->connectors_num; i++)
|
||||
v4l2_fwnode_connector_free(&decoder->connectors[i].base);
|
||||
for (i = 0; i < decoder->connectors_num; i++)
|
||||
media_device_unregister_entity(&decoder->connectors[i].ent);
|
||||
v4l2_async_unregister_subdev(sd);
|
||||
v4l2_ctrl_handler_free(&decoder->hdl);
|
||||
return 0;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user