@@ -32,6 +32,8 @@
#define TVP5150_FIELD V4L2_FIELD_ALTERNATE
#define TVP5150_COLORSPACE V4L2_COLORSPACE_SMPTE170M
+#define TVP5150_MAX_CONNECTORS 3 /* Check dt-bindings for more information */
+
MODULE_DESCRIPTION("Texas Instruments TVP5150A/TVP5150AM1/TVP5151 video decoder driver");
MODULE_AUTHOR("Mauro Carvalho Chehab");
MODULE_LICENSE("GPL v2");
@@ -44,16 +46,25 @@ MODULE_PARM_DESC(debug, "Debug level (0-2)");
#define dprintk0(__dev, __arg...) dev_dbg_lvl(__dev, 0, 0, __arg)
enum tvp5150_pads {
- TVP5150_PAD_IF_INPUT,
+ TVP5150_PAD_AIP1A,
+ TVP5150_PAD_AIP1B,
TVP5150_PAD_VID_OUT,
TVP5150_NUM_PADS
};
+struct tvp5150_connector {
+ struct v4l2_fwnode_connector base;
+ struct media_entity ent;
+ struct media_pad pad;
+};
+
struct tvp5150 {
struct v4l2_subdev sd;
-#ifdef CONFIG_MEDIA_CONTROLLER
+
struct media_pad pads[TVP5150_NUM_PADS];
-#endif
+ struct tvp5150_connector connectors[TVP5150_MAX_CONNECTORS];
+ unsigned int connectors_num;
+
struct v4l2_ctrl_handler hdl;
struct v4l2_rect rect;
struct regmap *regmap;
@@ -1167,6 +1178,130 @@ static int tvp5150_enum_frame_size(struct v4l2_subdev *sd,
return 0;
}
+/****************************************************************************
+ * Media entity ops
+ ****************************************************************************/
+#if defined(CONFIG_MEDIA_CONTROLLER)
+static int tvp5150_set_link(struct media_pad *connector_pad,
+ struct media_pad *tvp5150_pad, u32 flags)
+{
+ struct media_link *link;
+
+ link = media_entity_find_link(connector_pad, tvp5150_pad);
+ if (!link)
+ return -EINVAL;
+
+ link->flags = flags;
+ link->reverse->flags = link->flags;
+
+ return 0;
+}
+
+static int tvp5150_disable_all_input_links(struct tvp5150 *decoder)
+{
+ struct media_pad *connector_pad;
+ unsigned int i;
+ int err;
+
+ for (i = 0; i < TVP5150_NUM_PADS - 1; i++) {
+ connector_pad = media_entity_remote_pad(&decoder->pads[i]);
+ if (!connector_pad)
+ continue;
+
+ err = tvp5150_set_link(connector_pad, &decoder->pads[i], 0);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+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);
+ struct media_pad *other_tvp5150_pad =
+ &decoder->pads[tvp5150_pad->index ^ 1];
+ bool is_svideo = false;
+ unsigned int i;
+ int err;
+
+ /*
+ * The TVP5150 state is determined by the enabled sink pad link(s).
+ * 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].base.type == V4L2_CONN_SVIDEO;
+ break;
+ }
+ }
+
+ dev_dbg_lvl(sd->dev, 1, debug, "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 (is_svideo)
+ dev_dbg_lvl(sd->dev, 1, debug,
+ "link setup '%s':%d->'%s':%d[%d]",
+ remote->entity->name, remote->index,
+ other_tvp5150_pad->entity->name,
+ other_tvp5150_pad->index,
+ flags & MEDIA_LNK_FL_ENABLED);
+
+ /*
+ * The TVP5150 has an internal mux which allows the following setup:
+ *
+ * comp-connector1 --\
+ * |---> AIP1A
+ * /
+ * svideo-connector -|
+ * \
+ * |---> AIP1B
+ * comp-connector2 --/
+ *
+ * We can't rely on user space that the current connector gets disabled
+ * first before enabling the new connector. Disable all active
+ * connector links to be on the safe side.
+ */
+ err = tvp5150_disable_all_input_links(decoder);
+ if (err)
+ return err;
+
+ tvp5150_s_routing(sd, is_svideo ? TVP5150_SVIDEO : tvp5150_pad->index,
+ flags & MEDIA_LNK_FL_ENABLED ? TVP5150_NORMAL :
+ TVP5150_BLACK_SCREEN, 0);
+
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ /*
+ * S-Video connector is conneted to both ports AIP1A and AIP1B.
+ * Both links must be enabled in one-shot regardless which link
+ * the user requests.
+ */
+ if (is_svideo) {
+ err = tvp5150_set_link((struct media_pad *) remote,
+ other_tvp5150_pad, flags);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static const struct media_entity_operations tvp5150_sd_media_ops = {
+ .link_setup = tvp5150_link_setup,
+};
+#endif
/****************************************************************************
I2C Command
****************************************************************************/
@@ -1314,6 +1449,71 @@ 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].base.links[0].remote_port;
+ unsigned int flags = i ? 0 : MEDIA_LNK_FL_ENABLED;
+ bool is_svideo = decoder->connectors[i].base.type == V4L2_CONN_SVIDEO;
+
+ pad->flags = MEDIA_PAD_FL_SOURCE;
+ ret = media_entity_pads_init(con, 1, pad);
+ if (ret < 0)
+ goto err;
+
+ ret = media_device_register_entity(sd->v4l2_dev->mdev, con);
+ if (ret < 0)
+ goto err;
+
+ ret = media_create_pad_link(con, 0, &sd->entity, port, flags);
+ if (ret < 0)
+ goto err;
+
+ if (is_svideo) {
+ /*
+ * Check tvp5150_link_setup() comments for more
+ * information.
+ */
+ port = decoder->connectors[i].base.links[1].remote_port;
+ ret = media_create_pad_link(con, 0, &sd->entity, port,
+ flags);
+ if (ret < 0)
+ goto err;
+ }
+
+ /* Enable default input. */
+ if (flags == MEDIA_LNK_FL_ENABLED) {
+ decoder->input =
+ is_svideo ? TVP5150_SVIDEO :
+ port == 0 ? TVP5150_COMPOSITE0 :
+ TVP5150_COMPOSITE1;
+
+ tvp5150_selmux(sd);
+ }
+ }
+
+ return 0;
+
+err:
+ for (i = 0; i < decoder->connectors_num; i++)
+ media_device_unregister_entity(&decoder->connectors[i].ent);
+ return ret;
+#endif
+
+ return 0;
+}
+
/* ----------------------------------------------------------------------- */
static const struct v4l2_ctrl_ops tvp5150_ctrl_ops = {
@@ -1367,6 +1567,10 @@ 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
****************************************************************************/
@@ -1515,36 +1719,159 @@ 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_mc_init(struct tvp5150 *decoder)
{
- struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
- struct device_node *ep;
- unsigned int flags;
- int ret = 0;
+ struct v4l2_subdev *sd = &decoder->sd;
+ unsigned int i;
- ep = of_graph_get_next_endpoint(np, NULL);
- if (!ep)
- return -EINVAL;
+ sd->entity.ops = &tvp5150_sd_media_ops;
+ sd->entity.function = MEDIA_ENT_F_ATV_DECODER;
+
+ for (i = 0; i < TVP5150_NUM_PADS - 1; i++) {
+ decoder->pads[i].flags = MEDIA_PAD_FL_SINK;
+ decoder->pads[i].sig_type = PAD_SIGNAL_ANALOG;
+ }
+
+ decoder->pads[i].flags = MEDIA_PAD_FL_SOURCE;
+ decoder->pads[i].sig_type = PAD_SIGNAL_DV;
- ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg);
+ return media_entity_pads_init(&sd->entity, TVP5150_NUM_PADS,
+ decoder->pads);
+}
+
+#else /* !defined(CONFIG_MEDIA_CONTROLLER) */
+
+static inline int tvp5150_mc_init(struct tvp5150 *decoder)
+{
+ return 0;
+}
+#endif /* defined(CONFIG_MEDIA_CONTROLLER) */
+
+static int
+tvp5150_add_connector(struct tvp5150 *decoder, struct device_node *np,
+ unsigned int portn, unsigned int epn, unsigned int svideo)
+{
+ struct device *dev = decoder->sd.dev;
+ struct device_node *ep_np, *remote_np;
+ struct v4l2_fwnode_connector *vc;
+ struct tvp5150_connector *c;
+ unsigned int next_connector = decoder->connectors_num;
+ int ret;
+
+ /* Get free connector entry. */
+ if (next_connector >= TVP5150_MAX_CONNECTORS)
+ return 0;
+
+ c = &decoder->connectors[next_connector];
+ vc = &c->base;
+ ep_np = of_graph_get_endpoint_by_regs(np, portn, epn);
+ remote_np = of_graph_get_remote_port_parent(ep_np);
+
+ ret = v4l2_fwnode_connector_alloc_parse(of_fwnode_handle(ep_np), vc);
if (ret)
goto err;
- flags = bus_cfg.bus.parallel.flags;
+ if ((!svideo && vc->type != V4L2_CONN_COMPOSITE) ||
+ (svideo && vc->type != V4L2_CONN_SVIDEO)) {
+ dev_err(dev, "Invalid connector type for port@%u/endpoint@%u\n",
+ portn, epn);
+ ret = -EINVAL;
+ goto err;
+ }
+ if (svideo &&
+ (vc->nr_of_links != 2 ||
+ vc->links[0].remote_port == vc->links[1].remote_port)) {
+ dev_err(dev, "Invalid Svideo connector configuration\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ c->ent.flags = MEDIA_ENT_FL_CONNECTOR;
+ c->ent.name = vc->label;
+ c->ent.name = kasprintf(GFP_KERNEL, "%s %s", remote_np->name,
+ vc->label ? vc->label : "");
+ c->ent.function = vc->type == V4L2_CONN_SVIDEO ?
+ MEDIA_ENT_F_CONN_SVIDEO : MEDIA_ENT_F_CONN_COMPOSITE;
+
+ decoder->connectors_num++;
+
+ of_node_put(remote_np);
+ of_node_put(ep_np);
+ return 0;
+
+err:
+ of_node_put(remote_np);
+ of_node_put(ep_np);
+ v4l2_fwnode_connector_free(vc);
+ return ret;
+}
+
+static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np)
+{
+ struct device *dev = decoder->sd.dev;
+ struct device_node *ep_np;
+ struct v4l2_fwnode_endpoint bus_cfg = {
+ .bus_type = V4L2_MBUS_UNKNOWN
+ };
+ unsigned int flags, ep_num;
+ int ret;
+
+ /* At least 1 output and 1 input. */
+ ep_num = of_graph_get_endpoint_count(np);
+ if (ep_num < 2 || ep_num > 5) {
+ dev_err(dev, "At least 1 input and 1 output must be connected to the device.\n");
+ return -EINVAL;
+ }
+
+ /* Layout if all connectors are used
+ *
+ * tvp-5150 port@0 (AIP1A)
+ * endpoint@0 -----------> Comp0-Con port
+ * endpoint@1 --------+--> Svideo-Con port
+ * tvp-5150 port@1 (AIP1B) |
+ * endpoint@1 --------+
+ * endpoint@0 -----------> Comp1-Con port
+ * tvp-5150 port@2
+ * endpoint (video bitstream output at YOUT[0-7] parallel bus)
+ */
+ for_each_endpoint_of_node(np, ep_np) {
+ struct of_endpoint ep;
+
+ of_graph_parse_endpoint(ep_np, &ep);
+ if (ep.port > 1)
+ continue;
+
+ ret = tvp5150_add_connector(decoder, np, ep.port, ep.id,
+ ep.id ? 1 : 0);
+ if (ret) {
+ of_node_put(ep_np);
+ return ret;
+ }
+ }
+
+ 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");
+ return -EINVAL;
+ }
+ ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_np), &bus_cfg);
+ of_node_put(ep_np);
+ if (ret)
+ return ret;
+
+ 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;
+ return -EINVAL;
}
decoder->mbus_type = bus_cfg.bus_type;
-err:
- of_node_put(ep);
- return ret;
+ return decoder->connectors_num ? 0 : -ENODEV;
}
static const char * const tvp5150_test_patterns[2] = {
@@ -1592,22 +1919,13 @@ 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;
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> --- Changelog: [1] https://patchwork.kernel.org/cover/10794703/ [2] https://patchwork.kernel.org/cover/10786553/ v8: - fix rebasing issue - fix error handling during tvp5150_registered() - adapt to new v4l2_connector_type enum v7: - don't init enum tvp5150_pads with TVP5150_COMPOSITE0 functionality - break some 80 character limitation to improve readability - fix comment style -> always start with capital letters and end with dot - fix some minor style issues - fix tvp5150_registered error handling - simplify tvp5150_mc_init - make connectors static -> since now only three connectors are possible (as described in DT) -> drop tvp5150.endpoints storage -> squash tvp5150_parse_dt and tvp5150_add_of_connectors - improve tvp5150_parse_dt: -> make parsing stricter and fix not detected missconfigured dt-data -> svideo must be connected now to port@[0,1]/endpoint@1 v6: - fix misspelled comments - use 'unsigned int' where it's possible - cleanup ifdef part-2: * tvp5150_mc_init, tvp5150_add_of_connectors: add surrounding CONFIG_MEDIA_CONTROLLER if def and stubs to improve quality - tvp5150_mc_init: uniform interface, use 'struct tvp5150' since all internal function do this. - tvp5150_add_of_connectors: call within probe() to make it cleaner - tvp5150_parse_dt: move local loop vars within the loop. v5: - Fixing build deps: - tvp5150_mc_init: fix CONFIG_MEDIA_CONTROLLER deps - struct tvp5150: drop CONFIG_MEDIA_CONTROLLER conditional property includes. This leads into to complex deps for futher development. - tvp5150_dt_cleanup: enable function only if CONFIG_OF is enabled - tvp5150_parse_dt: enable function only if CONFIG_OF is enabled - tvp5150_probe: call tvp5150_dt_cleanup only if CONFIG_OF is enabled - Simplify link_setup routine: - use generic connector parsing since both series [1,2] are squashed into one - struct tvp5150: drop pads_state and modify_second_link property due to link_setup() rework. - tvp5150_link_setup: add more comments - tvp5150_link_setup: simply the link setup routine a lot. Edit the 2nd link directly within the driver instead of a recursive media-framework call (__media_entity_setup_link). This improves the readability and shrinks the driver code. - tvp5150_link_setup: disable all active links in case user switches connectors without disable it first. - tvp5150_registered: simplify default link enable path due to link_setup() rework. - General cleanups - tvp5150_parse_dt: drop unecessary test - tvp5150_parse_dt: add err message due to misconfiguration - tvp5150_parse_dt: make use of V4L2_MBUS_UNKNOWN definition - s/dev_dbg/dev_dbg_lvl v4: - rebase on top of media_tree/master, fix merge conflict due to commit 60359a28d592 ("media: v4l: fwnode: Initialise the V4L2 fwnode endpoints to zero") v3: - probe(): s/err/err_free_v4l2_ctrls - drop MC dependency for tvp5150_pads 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 | 378 +++++++++++++++++++++++++++++++++--- 1 file changed, 348 insertions(+), 30 deletions(-)