Date:   Tue, 13 Dec 2016 12:39:19 -0300
From:   Javier Martinez Canillas <javier@....samsung.com>
To:     linux-kernel@...r.kernel.org
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Javier Martinez Canillas <javier@....samsung.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        linux-media@...r.kernel.org
Subject: [RFT PATCH] [media] partial revert of "[media] tvp5150: add HW input connectors support"

Commit f7b4b54e6364 ("[media] tvp5150: add HW input connectors support")
added input signals support for the tvp5150, but the approach was found
to be incorrect so the corresponding DT binding commit 82c2ffeb217a
("[media] tvp5150: document input connectors DT bindings") was reverted.

This left the driver with an undocumented (and wrong) DT parsing logic,
so lets get rid of this code as well until the input connectors support
is implemented properly.

It's a partial revert due other patches added on top of mentioned commit
not allowing the commit to be reverted cleanly anymore. But all the code
related to the DT parsing logic and input entities creation are removed.

Suggested-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>

---

Hello Laurent,

I've tested this patch on top of media/master on my IGEPv2 + tvp5150
with the following:

$ media-ctl -r -l '"tvp5150 1-005c":1->"OMAP3 ISP CCDC":0[1], "OMAP3 ISP CCDC":1->"OMAP3 ISP CCDC output":0[1]'
$ media-ctl -v --set-format '"OMAP3 ISP CCDC":0 [UYVY2X8 720x240 field:alternate]'
$ media-ctl -v --set-format '"OMAP3 ISP CCDC":1 [UYVY2X8 720x240 field:interlaced-tb]'
$ yavta -f UYVY -s 720x480 -n 1 --field interlaced-tb --capture=1 -F /dev/video2
$ raw2rgbpnm -f UYVY -s 720x480 frame-000000.bin frame.pnm

I've also tested the other composite input with the following change:

diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index 5fe5faefe212..973be68ff78c 100644
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -1371,7 +1371,7 @@ static int tvp5150_probe(struct i2c_client *c,
                return res;

        core->norm = V4L2_STD_ALL;      /* Default is autodetect */
-       core->input = TVP5150_COMPOSITE1;
+       core->input = TVP5150_COMPOSITE0;
        core->enable = true;

        v4l2_ctrl_handler_init(&core->hdl, 5);

But as mentioned, it also worked for me without the revert so please let
me know if the driver works with your omap3 board.

Best regards,
Javier

 drivers/media/i2c/tvp5150.c | 142 --------------------------------------------
 1 file changed, 142 deletions(-)

diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index 48646a7f3fb0..5fe5faefe212 100644
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -42,8 +42,6 @@ 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;
@@ -1018,40 +1016,6 @@ static int tvp5150_enum_frame_size(struct v4l2_subdev *sd,
 }
 
 /****************************************************************************
-			Media entity ops
- ****************************************************************************/
-
-#ifdef CONFIG_MEDIA_CONTROLLER
-static int tvp5150_link_setup(struct media_entity *entity,
-			      const struct media_pad *local,
-			      const struct media_pad *remote, u32 flags)
-{
-	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;
-
-	tvp5150_selmux(sd);
-
-	return 0;
-}
-
-static const struct media_entity_operations tvp5150_sd_media_ops = {
-	.link_setup = tvp5150_link_setup,
-};
-#endif
-
-/****************************************************************************
 			I2C Command
  ****************************************************************************/
 
@@ -1188,42 +1152,6 @@ static int tvp5150_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
 	return 0;
 }
 
-static int tvp5150_registered(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 = {
@@ -1274,11 +1202,6 @@ 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
  ****************************************************************************/
@@ -1360,12 +1283,6 @@ 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;
 
@@ -1389,63 +1306,6 @@ 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) {
-			dev_err(decoder->sd.dev,
-				 "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) {
-			dev_err(decoder->sd.dev,
-				 "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;
-		}
-
-		input->flags = MEDIA_ENT_FL_CONNECTOR;
-
-		ret = of_property_read_string(child, "label", &name);
-		if (ret < 0) {
-			dev_err(decoder->sd.dev,
-				 "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;
@@ -1491,7 +1351,6 @@ 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)
@@ -1505,7 +1364,6 @@ static int tvp5150_probe(struct i2c_client *c,
 	if (res < 0)
 		return res;
 
-	sd->entity.ops = &tvp5150_sd_media_ops;
 #endif
 
 	res = tvp5150_detect_version(core);
-- 
2.7.4

Powered by blists - more mailing lists