@@ -43,16 +43,39 @@ MODULE_PARM_DESC(debug, "Debug level (0-2)");
#define dprintk0(__dev, __arg...) dev_dbg_lvl(__dev, 0, 0, __arg)
+#if defined(CONFIG_MEDIA_CONTROLLER)
enum tvp5150_pads {
- TVP5150_PAD_IF_INPUT,
- TVP5150_PAD_VID_OUT,
- TVP5150_NUM_PADS
+ TVP5150_PAD_AIP1A = TVP5150_COMPOSITE0,
+ TVP5150_PAD_AIP1B,
+ TVP5150_PAD_VID_OUT,
+ TVP5150_NUM_PADS
+};
+
+enum tvp5150_pads_state {
+ TVP5150_PAD_INACTIVE,
+ TVP5150_PAD_ACTIVE_COMPOSITE,
+ TVP5150_PAD_ACTIVE_SVIDEO,
+};
+
+struct tvp5150_connector {
+ struct media_entity ent;
+ struct media_pad pad;
+ unsigned int port_num;
+ bool is_svideo;
};
+#endif
struct tvp5150 {
struct v4l2_subdev sd;
-#ifdef CONFIG_MEDIA_CONTROLLER
+ /* additional additional endpoint for the svideo connector */
+ struct device_node *endpoints[TVP5150_NUM_PADS + 1];
+ unsigned int endpoints_num;
+#if defined(CONFIG_MEDIA_CONTROLLER)
struct media_pad pads[TVP5150_NUM_PADS];
+ int pads_state[TVP5150_NUM_PADS];
+ struct tvp5150_connector *connectors;
+ int connectors_num;
+ bool modify_second_link;
#endif
struct v4l2_ctrl_handler hdl;
struct v4l2_rect rect;
@@ -1168,6 +1191,160 @@ static int tvp5150_enum_frame_size(struct v4l2_subdev *sd,
return 0;
}
+/****************************************************************************
+ * Media entity ops
+ ****************************************************************************/
+#if defined(CONFIG_MEDIA_CONTROLLER)
+static int tvp5150_active_pad_idx(struct tvp5150 *decoder)
+{
+ int *pad_state = &decoder->pads_state[0];
+ int i, idx = -1;
+
+ for (i = 0; i < TVP5150_NUM_PADS - 1; i++) {
+ if ((pad_state[i] == TVP5150_PAD_ACTIVE_COMPOSITE) ||
+ (pad_state[i] == TVP5150_PAD_ACTIVE_SVIDEO)) {
+ idx = i;
+ break;
+ }
+ }
+
+ return idx;
+}
+
+static int tvp5150_active_svideo_links(struct tvp5150 *decoder)
+{
+ int *pad_state = &decoder->pads_state[0];
+ int i, links = 0;
+
+ for (i = 0; i < TVP5150_NUM_PADS - 1; i++)
+ if (pad_state[i] == TVP5150_PAD_ACTIVE_SVIDEO)
+ links++;
+
+ return links;
+}
+
+static int tvp5150_modify_link(struct tvp5150 *decoder, unsigned int pad_idx,
+ struct media_pad *pad, int flags)
+{
+ struct media_pad *src_pad;
+ struct media_link *link;
+
+ if (pad)
+ src_pad = pad;
+ else
+ src_pad = media_entity_remote_pad(&decoder->pads[pad_idx]);
+
+ if (!src_pad)
+ return -1;
+
+ link = media_entity_find_link(src_pad,
+ &decoder->pads[pad_idx]);
+
+ /*
+ * Don't use locked version, since we are running already within the
+ * media_entity_setup_link() context.
+ */
+ return __media_entity_setup_link(link, flags);
+
+}
+
+static int tvp5150_s_routing(struct v4l2_subdev *sd, u32 input, u32 output,
+ u32 config);
+
+static int tvp5150_link_setup(struct media_entity *entity,
+ const struct media_pad *tvp5150_pad,
+ const struct media_pad *remote, u32 flags)
+{
+ struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ int *pad_state = &decoder->pads_state[0];
+ int i, active_pad, ret = 0;
+ bool is_svideo = false;
+
+ /*
+ * The tvp state is determined by the enabled sink pad link.
+ * Enabling or disabling the source pad link has no effect.
+ */
+ if (tvp5150_pad->flags & MEDIA_PAD_FL_SOURCE)
+ return 0;
+
+ /* check if the svideo connector should be enabled */
+ for (i = 0; i < decoder->connectors_num; i++) {
+ if (remote->entity == &decoder->connectors[i].ent) {
+ is_svideo = decoder->connectors[i].is_svideo;
+ break;
+ }
+ }
+
+ /* check if there is already a enabled svideo link and determine pad */
+ active_pad = tvp5150_active_pad_idx(decoder);
+
+ dev_dbg(sd->dev, "link setup '%s':%d->'%s':%d[%d]",
+ remote->entity->name, remote->index, tvp5150_pad->entity->name,
+ tvp5150_pad->index, flags & MEDIA_LNK_FL_ENABLED);
+
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (active_pad >= 0 && !decoder->modify_second_link)
+ tvp5150_modify_link(decoder, active_pad, NULL, 0);
+
+ dev_dbg(sd->dev, "Setting %d active [%s]\n", tvp5150_pad->index,
+ is_svideo ? "svideo" : "composite");
+ pad_state[tvp5150_pad->index] =
+ is_svideo ? TVP5150_PAD_ACTIVE_SVIDEO :
+ TVP5150_PAD_ACTIVE_COMPOSITE;
+
+ if (is_svideo) {
+ if (tvp5150_active_svideo_links(decoder) < 2) {
+ unsigned int idx = tvp5150_pad->index ^ 1;
+
+ decoder->modify_second_link = true;
+ tvp5150_modify_link(decoder, idx,
+ (struct media_pad *)remote,
+ MEDIA_LNK_FL_ENABLED);
+ } else {
+ decoder->modify_second_link = false;
+ tvp5150_s_routing(sd, TVP5150_SVIDEO,
+ TVP5150_NORMAL, 0);
+ }
+ } else {
+ tvp5150_s_routing(sd, tvp5150_pad->index,
+ TVP5150_NORMAL, 0);
+ }
+ } else {
+ /*
+ * Svideo streams on two pads and user can request to AIP1A or
+ * AIP1B pad. In either case both pads gets disabled in in go.
+ * So check only if user wants to disable a not enabled
+ * composite pad.
+ */
+ if (!is_svideo && tvp5150_pad->index != active_pad)
+ goto out;
+
+ dev_dbg(sd->dev, "going inactive\n");
+ pad_state[tvp5150_pad->index] = TVP5150_PAD_INACTIVE;
+
+ /* in case of svideo we need to disable the second pad too */
+ if (tvp5150_active_svideo_links(decoder) > 0) {
+ unsigned int idx = tvp5150_pad->index ^ 1;
+
+ decoder->modify_second_link = true;
+ tvp5150_modify_link(decoder, idx,
+ (struct media_pad *)remote, 0);
+ }
+
+ if (!decoder->modify_second_link)
+ tvp5150_s_routing(sd, is_svideo ? TVP5150_SVIDEO :
+ active_pad, TVP5150_BLACK_SCREEN, 0);
+ decoder->modify_second_link = false;
+ }
+out:
+ return ret;
+}
+
+static const struct media_entity_operations tvp5150_sd_media_ops = {
+ .link_setup = tvp5150_link_setup,
+};
+#endif
/****************************************************************************
I2C Command
****************************************************************************/
@@ -1315,6 +1492,76 @@ static int tvp5150_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
return 0;
}
+static int tvp5150_registered(struct v4l2_subdev *sd)
+{
+#if defined(CONFIG_MEDIA_CONTROLLER)
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ unsigned int i;
+ int ret;
+
+ /*
+ * Setup connector pads and links. Enable the link to the first
+ * available connector per default.
+ */
+ for (i = 0; i < decoder->connectors_num; i++) {
+ struct media_entity *con = &decoder->connectors[i].ent;
+ struct media_pad *pad = &decoder->connectors[i].pad;
+ unsigned int port = decoder->connectors[i].port_num;
+ bool is_svideo = decoder->connectors[i].is_svideo;
+ int flags = i ? 0 : MEDIA_LNK_FL_ENABLED;
+
+ pad->flags = MEDIA_PAD_FL_SOURCE;
+ ret = media_entity_pads_init(con, 1, pad);
+ if (ret < 0)
+ return ret;
+
+ ret = media_device_register_entity(sd->v4l2_dev->mdev, con);
+ if (ret < 0)
+ return ret;
+
+ ret = media_create_pad_link(con, 0, &sd->entity, port, flags);
+ if (ret < 0) {
+ media_device_unregister_entity(con);
+ return ret;
+ }
+
+ if (is_svideo) {
+ /* svideo links to both aip1a and aip1b */
+ ret = media_create_pad_link(con, 0, &sd->entity,
+ port + 1, flags);
+ if (ret < 0) {
+ media_device_unregister_entity(con);
+ return ret;
+ }
+ }
+
+ /* enable default input */
+ if (flags == MEDIA_LNK_FL_ENABLED) {
+ if (is_svideo) {
+ decoder->pads_state[TVP5150_PAD_AIP1A] =
+ decoder->pads_state[TVP5150_PAD_AIP1B] =
+ TVP5150_PAD_ACTIVE_SVIDEO;
+ decoder->input = TVP5150_SVIDEO;
+ } else {
+ if (port == 0) {
+ decoder->pads_state[TVP5150_PAD_AIP1A] =
+ TVP5150_PAD_ACTIVE_COMPOSITE;
+ decoder->input = TVP5150_COMPOSITE0;
+ } else {
+ decoder->pads_state[TVP5150_PAD_AIP1B] =
+ TVP5150_PAD_ACTIVE_COMPOSITE;
+ decoder->input = TVP5150_COMPOSITE1;
+ }
+ }
+ tvp5150_selmux(sd);
+ decoder->modify_second_link = false;
+ }
+ }
+#endif
+ return 0;
+}
+
+
/* ----------------------------------------------------------------------- */
static const struct v4l2_ctrl_ops tvp5150_ctrl_ops = {
@@ -1368,6 +1615,10 @@ static const struct v4l2_subdev_ops tvp5150_ops = {
.pad = &tvp5150_pad_ops,
};
+static const struct v4l2_subdev_internal_ops tvp5150_internal_ops = {
+ .registered = tvp5150_registered,
+};
+
/****************************************************************************
I2C Client & Driver
****************************************************************************/
@@ -1516,38 +1767,197 @@ static int tvp5150_init(struct i2c_client *c)
return 0;
}
-static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np)
+#if defined(CONFIG_MEDIA_CONTROLLER)
+static int tvp5150_add_of_connectors(struct tvp5150 *decoder)
{
- struct v4l2_fwnode_endpoint bus_cfg;
- struct device_node *ep;
- unsigned int flags;
- int ret = 0;
+ struct device *dev = decoder->sd.dev;
+ struct device_node *rp;
+ struct of_endpoint ep;
+ struct tvp5150_connector *connectors;
+ unsigned int connectors_num = decoder->connectors_num;
+ int i, ret;
+
+ /* Allocate and initialize all available input connectors */
+ connectors = devm_kcalloc(dev, connectors_num, sizeof(*connectors),
+ GFP_KERNEL);
+ if (!connectors)
+ return -ENOMEM;
- ep = of_graph_get_next_endpoint(np, NULL);
- if (!ep)
- return -EINVAL;
+ for (i = 0; i < connectors_num; i++) {
+ rp = of_graph_get_remote_port_parent(decoder->endpoints[i]);
+ of_graph_parse_endpoint(decoder->endpoints[i], &ep);
+ connectors[i].port_num = ep.port;
+ connectors[i].is_svideo = !!of_device_is_compatible(rp,
+ "svideo-connector");
- ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg);
- if (ret)
- goto err;
+ if (connectors[i].is_svideo)
+ connectors[i].ent.function = MEDIA_ENT_F_CONN_SVIDEO;
+ else
+ connectors[i].ent.function = MEDIA_ENT_F_CONN_COMPOSITE;
+
+ connectors[i].ent.flags = MEDIA_ENT_FL_CONNECTOR;
+ ret = of_property_read_string(rp, "label",
+ &connectors[i].ent.name);
+ if (ret < 0)
+ return ret;
+ }
- flags = bus_cfg.bus.parallel.flags;
+ decoder->connectors = connectors;
+
+ return 0;
+}
+#endif
+
+static int tvp5150_mc_init(struct v4l2_subdev *sd)
+{
+#if defined(CONFIG_MEDIA_CONTROLLER)
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ unsigned int i;
+ int ret;
+
+ sd->entity.ops = &tvp5150_sd_media_ops;
+ sd->entity.function = MEDIA_ENT_F_ATV_DECODER;
+
+ /* Initialize all TVP5150 pads */
+ for (i = 0; i < TVP5150_NUM_PADS; i++) {
+ if (i < TVP5150_NUM_PADS - 1) {
+ decoder->pads[i].flags = MEDIA_PAD_FL_SINK;
+ decoder->pads[i].sig_type = PAD_SIGNAL_ANALOG;
+ } else {
+ decoder->pads[i].flags = MEDIA_PAD_FL_SOURCE;
+ decoder->pads[i].sig_type = PAD_SIGNAL_DV;
+ }
+ }
+ ret = media_entity_pads_init(&sd->entity, TVP5150_NUM_PADS,
+ decoder->pads);
+ if (ret < 0)
+ goto out;
+
+ if (IS_ENABLED(CONFIG_OF))
+ ret = tvp5150_add_of_connectors(decoder);
+#endif
+out:
+ return ret;
+}
+
+static bool tvp5150_of_valid_input(struct device_node *endpoint,
+ unsigned int port, unsigned int id)
+{
+ struct device_node *rp = of_graph_get_remote_port_parent(endpoint);
+ const char *input;
+ int ret;
+
+ /* perform some basic checks needed for later mc_init */
+ switch (port) {
+ case TVP5150_PAD_AIP1A:
+ /* svideo must be connected to endpoint@1 */
+ ret = id ? of_device_is_compatible(rp, "svideo-connector") :
+ of_device_is_compatible(rp,
+ "composite-video-connector");
+ if (!ret)
+ return false;
+ break;
+ case TVP5150_PAD_AIP1B:
+ ret = of_device_is_compatible(rp, "composite-video-connector");
+ if (!ret)
+ return false;
+ break;
+ }
- 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 = of_property_read_string(rp, "label", &input);
+ if (ret < 0)
+ return false;
+
+ return true;
+}
+
+static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np)
+{
+ struct device *dev = decoder->sd.dev;
+ struct v4l2_fwnode_endpoint bus_cfg;
+ struct device_node *ep_np;
+ unsigned int flags;
+ int ret, i = 0, in = 0;
+ bool found = false;
+
+ /* at least 1 output and 1 input */
+ decoder->endpoints_num = of_graph_get_endpoint_count(np);
+ if (decoder->endpoints_num < 2 || decoder->endpoints_num > 4) {
ret = -EINVAL;
goto err;
}
- decoder->mbus_type = bus_cfg.bus_type;
+ for_each_endpoint_of_node(np, ep_np) {
+ struct of_endpoint ep;
+
+ of_graph_parse_endpoint(ep_np, &ep);
+ if (decoder->endpoints[i]) {
+ /* this should never happen */
+ dev_err(dev, "Invalid endpoint %pOF on port %d\n",
+ ep.local_node, ep.port);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ switch (ep.port) {
+ /* fall through */
+ case TVP5150_PAD_AIP1A:
+ case TVP5150_PAD_AIP1B:
+ if (!tvp5150_of_valid_input(ep_np, ep.port, ep.id)) {
+ dev_err(dev,
+ "Invalid endpoint %pOF on port %d\n",
+ ep.local_node, ep.port);
+ ret = -EINVAL;
+ goto err;
+ }
+ in++;
+ break;
+ case TVP5150_PAD_VID_OUT:
+ ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_np),
+ &bus_cfg);
+ if (ret)
+ goto err;
+
+ 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;
+ }
+
+ decoder->mbus_type = bus_cfg.bus_type;
+ break;
+ default:
+ dev_err(dev, "Invalid port %d for endpoint %pOF\n",
+ ep.port, ep.local_node);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ of_node_get(ep_np);
+ decoder->endpoints[i] = ep_np;
+ i++;
+
+ found = true;
+ }
+ decoder->connectors_num = in;
+ return found ? 0 : -ENODEV;
err:
- of_node_put(ep);
return ret;
}
+static void tvp5150_dt_cleanup(struct tvp5150 *decoder)
+{
+ unsigned int i;
+
+ for (i = 0; i < TVP5150_NUM_PADS; i++)
+ of_node_put(decoder->endpoints[i]);
+}
+
static const char * const tvp5150_test_patterns[2] = {
"Disabled",
"Black screen"
@@ -1586,7 +1996,7 @@ static int tvp5150_probe(struct i2c_client *c,
res = tvp5150_parse_dt(core, np);
if (res) {
dev_err(sd->dev, "DT parsing error: %d\n", res);
- return res;
+ goto err_cleanup_dt;
}
} else {
/* Default to BT.656 embedded sync */
@@ -1594,25 +2004,16 @@ 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)
- return res;
-
-#endif
+ res = tvp5150_mc_init(sd);
+ if (res)
+ goto err_cleanup_dt;
res = tvp5150_detect_version(core);
if (res < 0)
- return res;
+ goto err_cleanup_dt;
core->norm = V4L2_STD_ALL; /* Default is autodetect */
core->detected_norm = V4L2_STD_UNKNOWN;
@@ -1664,6 +2065,9 @@ static int tvp5150_probe(struct i2c_client *c,
err:
v4l2_ctrl_handler_free(&core->hdl);
return res;
+err_cleanup_dt:
+ tvp5150_dt_cleanup(core);
+ return res;
}
static int tvp5150_remove(struct i2c_client *c)
This patch adds the of_graph support to describe the tvp 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. The svideo connector must be conneted to port@0/endpoint@1, look at the Documentation for more information. Since the TVP5150 is a converter 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> --- Changelog: v2: - adapt commit message - unify ifdef switches - rename tvp5150_valid_input -> tvp5150_of_valid_input, to be more precise - mc: use 2-input and 1-output pad - mc: link svideo connector to both input pads - mc: enable/disable svideo links in one go - mc: change link_setup() behaviour, switch the input src don't require a explicite disable before. - mc: rename 'local' media_pad param to tvp5150_pad to avoid confusion - mc: enable link to the first available connector and set the corresponding tvp5150 input src per default during registered() - mc/of: factor out oftree connector allocation - of: drop svideo dt port - of: move svideo connector to port@0/endpoint@1 - of: require at least 1-in and 1-out endpoint --- drivers/media/i2c/tvp5150.c | 478 +++++++++++++++++++++++++++++++++--- 1 file changed, 441 insertions(+), 37 deletions(-)