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authorJavier Martinez Canillas <javier@osg.samsung.com>2016-02-05 22:09:58 +0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2016-02-11 16:11:29 +0300
commitf7b4b54e63643b740c598e044874c4bffa0f04f2 (patch)
tree842f95718a7eb8306d5e22e816867739bbbb1a3b /drivers/media/i2c
parent82c2ffeb217a024084f3ad0bf3705f5661365804 (diff)
downloadlinux-f7b4b54e63643b740c598e044874c4bffa0f04f2.tar.xz
[media] tvp5150: add HW input connectors support
The tvp5150 decoder has different input connectors. The actual list of HW inputs depends on the device version but all have at least these 3: 1) Composite0 2) Composite1 3) S-Video and some variants have a 4th possible input connector: 4) Signal generator The driver currently uses the .s_routing callback to switch the input connector but since these are separate HW blocks, it's better to use media entities to represent the input connectors and their source pads linked with the decoder's sink pad. This allows user-space to use the MEDIA_IOC_SETUP_LINK ioctl to choose the input connector. For example using the media-ctl user-space tool: $ media-ctl -r -l '"Composite0":0->"tvp5150 1-005c":0[1]' Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/i2c')
-rw-r--r--drivers/media/i2c/tvp5150.c150
1 files changed, 150 insertions, 0 deletions
diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index 3a32fd1df805..b8976028fc82 100644
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -40,6 +40,8 @@ struct tvp5150 {
struct v4l2_subdev sd;
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_pad pads[DEMOD_NUM_PADS];
+ struct media_entity input_ent[TVP5150_INPUT_NUM];
+ struct media_pad input_pad[TVP5150_INPUT_NUM];
#endif
struct v4l2_ctrl_handler hdl;
struct v4l2_rect rect;
@@ -997,6 +999,49 @@ static int tvp5150_enum_frame_size(struct v4l2_subdev *sd,
}
/****************************************************************************
+ Media entity ops
+ ****************************************************************************/
+
+static int tvp5150_link_setup(struct media_entity *entity,
+ const struct media_pad *local,
+ const struct media_pad *remote, u32 flags)
+{
+#ifdef CONFIG_MEDIA_CONTROLLER
+ struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ int i;
+
+ for (i = 0; i < TVP5150_INPUT_NUM; i++) {
+ if (remote->entity == &decoder->input_ent[i])
+ break;
+ }
+
+ /* Do nothing for entities that are not input connectors */
+ if (i == TVP5150_INPUT_NUM)
+ return 0;
+
+ decoder->input = i;
+
+ /* Only tvp5150am1 and tvp5151 have signal generator support */
+ if ((decoder->dev_id == 0x5150 && decoder->rom_ver == 0x0400) ||
+ (decoder->dev_id == 0x5151 && decoder->rom_ver == 0x0100)) {
+ decoder->output = (i == TVP5150_GENERATOR ?
+ TVP5150_BLACK_SCREEN : TVP5150_NORMAL);
+ } else {
+ decoder->output = TVP5150_NORMAL;
+ }
+
+ tvp5150_selmux(sd);
+#endif
+
+ return 0;
+}
+
+static const struct media_entity_operations tvp5150_sd_media_ops = {
+ .link_setup = tvp5150_link_setup,
+};
+
+/****************************************************************************
I2C Command
****************************************************************************/
@@ -1122,6 +1167,42 @@ static int tvp5150_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
return 0;
}
+static int tvp5150_registered_async(struct v4l2_subdev *sd)
+{
+#ifdef CONFIG_MEDIA_CONTROLLER
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ int ret = 0;
+ int i;
+
+ for (i = 0; i < TVP5150_INPUT_NUM; i++) {
+ struct media_entity *input = &decoder->input_ent[i];
+ struct media_pad *pad = &decoder->input_pad[i];
+
+ if (!input->name)
+ continue;
+
+ decoder->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
+
+ ret = media_entity_pads_init(input, 1, pad);
+ if (ret < 0)
+ return ret;
+
+ ret = media_device_register_entity(sd->v4l2_dev->mdev, input);
+ if (ret < 0)
+ return ret;
+
+ ret = media_create_pad_link(input, 0, &sd->entity,
+ DEMOD_PAD_IF_INPUT, 0);
+ if (ret < 0) {
+ media_device_unregister_entity(input);
+ return ret;
+ }
+ }
+#endif
+
+ return 0;
+}
+
/* ----------------------------------------------------------------------- */
static const struct v4l2_ctrl_ops tvp5150_ctrl_ops = {
@@ -1135,6 +1216,7 @@ static const struct v4l2_subdev_core_ops tvp5150_core_ops = {
.g_register = tvp5150_g_register,
.s_register = tvp5150_s_register,
#endif
+ .registered_async = tvp5150_registered_async,
};
static const struct v4l2_subdev_tuner_ops tvp5150_tuner_ops = {
@@ -1255,6 +1337,12 @@ static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np)
{
struct v4l2_of_endpoint bus_cfg;
struct device_node *ep;
+#ifdef CONFIG_MEDIA_CONTROLLER
+ struct device_node *connectors, *child;
+ struct media_entity *input;
+ const char *name;
+ u32 input_type;
+#endif
unsigned int flags;
int ret = 0;
@@ -1278,6 +1366,66 @@ static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np)
decoder->mbus_type = bus_cfg.bus_type;
+#ifdef CONFIG_MEDIA_CONTROLLER
+ connectors = of_get_child_by_name(np, "connectors");
+
+ if (!connectors)
+ goto err;
+
+ for_each_available_child_of_node(connectors, child) {
+ ret = of_property_read_u32(child, "input", &input_type);
+ if (ret) {
+ v4l2_err(&decoder->sd,
+ "missing type property in node %s\n",
+ child->name);
+ goto err_connector;
+ }
+
+ if (input_type > TVP5150_INPUT_NUM) {
+ ret = -EINVAL;
+ goto err_connector;
+ }
+
+ input = &decoder->input_ent[input_type];
+
+ /* Each input connector can only be defined once */
+ if (input->name) {
+ v4l2_err(&decoder->sd,
+ "input %s with same type already exists\n",
+ input->name);
+ ret = -EINVAL;
+ goto err_connector;
+ }
+
+ switch (input_type) {
+ case TVP5150_COMPOSITE0:
+ case TVP5150_COMPOSITE1:
+ input->function = MEDIA_ENT_F_CONN_COMPOSITE;
+ break;
+ case TVP5150_SVIDEO:
+ input->function = MEDIA_ENT_F_CONN_SVIDEO;
+ break;
+ case TVP5150_GENERATOR:
+ input->function = MEDIA_ENT_F_CONN_TEST;
+ break;
+ }
+
+ input->flags = MEDIA_ENT_FL_CONNECTOR;
+
+ ret = of_property_read_string(child, "label", &name);
+ if (ret < 0) {
+ v4l2_err(&decoder->sd,
+ "missing label property in node %s\n",
+ child->name);
+ goto err_connector;
+ }
+
+ input->name = name;
+ }
+
+err_connector:
+ of_node_put(connectors);
+#endif
err:
of_node_put(ep);
return ret;
@@ -1330,6 +1478,8 @@ static int tvp5150_probe(struct i2c_client *c,
res = media_entity_pads_init(&sd->entity, DEMOD_NUM_PADS, core->pads);
if (res < 0)
return res;
+
+ sd->entity.ops = &tvp5150_sd_media_ops;
#endif
res = tvp5150_detect_version(core);