* [PATCH RFC v2 07/16] media: get rid of unused "extra_links" param on media_entity_init()
[not found] <cover.1438954897.git.mchehab@osg.samsung.com>
@ 2015-08-07 14:20 ` Mauro Carvalho Chehab
2015-08-11 12:09 ` [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints Mauro Carvalho Chehab
1 sibling, 0 replies; 6+ messages in thread
From: Mauro Carvalho Chehab @ 2015-08-07 14:20 UTC (permalink / raw)
To: linux-arm-kernel
Currently, media_entity_init() creates an array with the links,
allocated at init time. It provides a parameter (extra_links)
that would allocate more links than the current needs, but this
is not used by any driver.
As we want to be able to do dynamic link allocation/removal,
we'll need to change the implementation of the links. So,
before doing that, let's first remove that extra unused
parameter, in order to cleanup the interface first.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/Documentation/media-framework.txt b/Documentation/media-framework.txt
index f552a75c0e70..2cc6019f7147 100644
--- a/Documentation/media-framework.txt
+++ b/Documentation/media-framework.txt
@@ -104,7 +104,7 @@ although drivers can allocate entities directly.
Drivers initialize entities by calling
media_entity_init(struct media_entity *entity, u16 num_pads,
- struct media_pad *pads, u16 extra_links);
+ struct media_pad *pads);
The media_entity name, type, flags, revision and group_id fields can be
initialized before or after calling media_entity_init. Entities embedded in
diff --git a/Documentation/video4linux/v4l2-framework.txt b/Documentation/video4linux/v4l2-framework.txt
index 75d5c18d689a..109cc3792534 100644
--- a/Documentation/video4linux/v4l2-framework.txt
+++ b/Documentation/video4linux/v4l2-framework.txt
@@ -300,7 +300,7 @@ calling media_entity_init():
struct media_pad *pads = &my_sd->pads;
int err;
- err = media_entity_init(&sd->entity, npads, pads, 0);
+ err = media_entity_init(&sd->entity, npads, pads);
The pads array must have been previously initialized. There is no need to
manually set the struct media_entity type and name fields, but the revision
@@ -700,7 +700,7 @@ calling media_entity_init():
struct media_pad *pad = &my_vdev->pad;
int err;
- err = media_entity_init(&vdev->entity, 1, pad, 0);
+ err = media_entity_init(&vdev->entity, 1, pad);
The pads array must have been previously initialized. There is no need to
manually set the struct media_entity type and name fields.
diff --git a/Documentation/zh_CN/video4linux/v4l2-framework.txt b/Documentation/zh_CN/video4linux/v4l2-framework.txt
index 2b828e631e31..ff815cb92031 100644
--- a/Documentation/zh_CN/video4linux/v4l2-framework.txt
+++ b/Documentation/zh_CN/video4linux/v4l2-framework.txt
@@ -295,7 +295,7 @@ owner ??????????????? i2c ?????????????????????????????????????????????
struct media_pad *pads = &my_sd->pads;
int err;
- err = media_entity_init(&sd->entity, npads, pads, 0);
+ err = media_entity_init(&sd->entity, npads, pads);
pads ???????????????????????????????????????????????? media_entity ??? type ???
name ????????????????????????revision ?????????????????????
@@ -602,7 +602,7 @@ v4l2_file_operations ???????????? file_operations ???????????????????????????
struct media_pad *pad = &my_vdev->pad;
int err;
- err = media_entity_init(&vdev->entity, 1, pad, 0);
+ err = media_entity_init(&vdev->entity, 1, pad);
pads ?????????????????????????????????????????????????????? media_entity ??? type ???
name ??????
diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
index 13bb57f0457f..2fdcbb5f000a 100644
--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -249,7 +249,7 @@ static void dvb_register_media_device(struct dvb_device *dvbdev,
}
if (npads)
- ret = media_entity_init(dvbdev->entity, npads, dvbdev->pads, 0);
+ ret = media_entity_init(dvbdev->entity, npads, dvbdev->pads);
if (!ret)
ret = media_device_register_entity(dvbdev->adapter->mdev,
dvbdev->entity);
diff --git a/drivers/media/i2c/ad9389b.c b/drivers/media/i2c/ad9389b.c
index 69094ab047b1..39d6ee681aeb 100644
--- a/drivers/media/i2c/ad9389b.c
+++ b/drivers/media/i2c/ad9389b.c
@@ -1158,7 +1158,7 @@ static int ad9389b_probe(struct i2c_client *client, const struct i2c_device_id *
state->rgb_quantization_range_ctrl->is_private = true;
state->pad.flags = MEDIA_PAD_FL_SINK;
- err = media_entity_init(&sd->entity, 1, &state->pad, 0);
+ err = media_entity_init(&sd->entity, 1, &state->pad);
if (err)
goto err_hdl;
diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c
index c70ababce954..5f76997f6e07 100644
--- a/drivers/media/i2c/adp1653.c
+++ b/drivers/media/i2c/adp1653.c
@@ -512,7 +512,7 @@ static int adp1653_probe(struct i2c_client *client,
if (ret)
goto free_and_quit;
- ret = media_entity_init(&flash->subdev.entity, 0, NULL, 0);
+ ret = media_entity_init(&flash->subdev.entity, 0, NULL);
if (ret < 0)
goto free_and_quit;
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index 09a96df170d1..cd15336260a3 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -1214,7 +1214,7 @@ static int adv7180_probe(struct i2c_client *client,
state->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
- ret = media_entity_init(&sd->entity, 1, &state->pad, 0);
+ ret = media_entity_init(&sd->entity, 1, &state->pad);
if (ret)
goto err_free_ctrl;
diff --git a/drivers/media/i2c/adv7511.c b/drivers/media/i2c/adv7511.c
index 95bcd4026451..e70aa56a0b11 100644
--- a/drivers/media/i2c/adv7511.c
+++ b/drivers/media/i2c/adv7511.c
@@ -1482,7 +1482,7 @@ static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id *
state->rgb_quantization_range_ctrl->is_private = true;
state->pad.flags = MEDIA_PAD_FL_SINK;
- err = media_entity_init(&sd->entity, 1, &state->pad, 0);
+ err = media_entity_init(&sd->entity, 1, &state->pad);
if (err)
goto err_hdl;
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index bfb0b6a72bbc..dcefa810c8ac 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -3198,7 +3198,7 @@ static int adv76xx_probe(struct i2c_client *client,
state->pads[state->source_pad].flags = MEDIA_PAD_FL_SOURCE;
err = media_entity_init(&sd->entity, state->source_pad + 1,
- state->pads, 0);
+ state->pads);
if (err)
goto err_work_queues;
diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c
index 897d68c78b06..8a1ecc6ab36c 100644
--- a/drivers/media/i2c/adv7842.c
+++ b/drivers/media/i2c/adv7842.c
@@ -3309,7 +3309,7 @@ static int adv7842_probe(struct i2c_client *client,
adv7842_delayed_work_enable_hotplug);
state->pad.flags = MEDIA_PAD_FL_SOURCE;
- err = media_entity_init(&sd->entity, 1, &state->pad, 0);
+ err = media_entity_init(&sd->entity, 1, &state->pad);
if (err)
goto err_work_queues;
diff --git a/drivers/media/i2c/as3645a.c b/drivers/media/i2c/as3645a.c
index 301084b07887..9d579a836f79 100644
--- a/drivers/media/i2c/as3645a.c
+++ b/drivers/media/i2c/as3645a.c
@@ -827,7 +827,7 @@ static int as3645a_probe(struct i2c_client *client,
if (ret < 0)
goto done;
- ret = media_entity_init(&flash->subdev.entity, 0, NULL, 0);
+ ret = media_entity_init(&flash->subdev.entity, 0, NULL);
if (ret < 0)
goto done;
diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c
index e15a789ad596..7a2cf352d9c5 100644
--- a/drivers/media/i2c/cx25840/cx25840-core.c
+++ b/drivers/media/i2c/cx25840/cx25840-core.c
@@ -5211,7 +5211,7 @@ static int cx25840_probe(struct i2c_client *client,
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads),
- state->pads, 0);
+ state->pads);
if (ret < 0) {
v4l_info(client, "failed to initialize media entity!\n");
return ret;
diff --git a/drivers/media/i2c/lm3560.c b/drivers/media/i2c/lm3560.c
index d9ece4b2d047..9bd9def0852c 100644
--- a/drivers/media/i2c/lm3560.c
+++ b/drivers/media/i2c/lm3560.c
@@ -365,7 +365,7 @@ static int lm3560_subdev_init(struct lm3560_flash *flash,
rval = lm3560_init_controls(flash, led_no);
if (rval)
goto err_out;
- rval = media_entity_init(&flash->subdev_led[led_no].entity, 0, NULL, 0);
+ rval = media_entity_init(&flash->subdev_led[led_no].entity, 0, NULL);
if (rval < 0)
goto err_out;
flash->subdev_led[led_no].entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
diff --git a/drivers/media/i2c/lm3646.c b/drivers/media/i2c/lm3646.c
index 626fb4679c02..4160e18af607 100644
--- a/drivers/media/i2c/lm3646.c
+++ b/drivers/media/i2c/lm3646.c
@@ -282,7 +282,7 @@ static int lm3646_subdev_init(struct lm3646_flash *flash)
rval = lm3646_init_controls(flash);
if (rval)
goto err_out;
- rval = media_entity_init(&flash->subdev_led.entity, 0, NULL, 0);
+ rval = media_entity_init(&flash->subdev_led.entity, 0, NULL);
if (rval < 0)
goto err_out;
flash->subdev_led.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c
index 6404c0d93e7a..f718a1009e4c 100644
--- a/drivers/media/i2c/m5mols/m5mols_core.c
+++ b/drivers/media/i2c/m5mols/m5mols_core.c
@@ -975,7 +975,7 @@ static int m5mols_probe(struct i2c_client *client,
sd->internal_ops = &m5mols_subdev_internal_ops;
info->pad.flags = MEDIA_PAD_FL_SOURCE;
- ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
+ ret = media_entity_init(&sd->entity, 1, &info->pad);
if (ret < 0)
return ret;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
diff --git a/drivers/media/i2c/mt9m032.c b/drivers/media/i2c/mt9m032.c
index c7747bd0cabb..1493ab6e7fb3 100644
--- a/drivers/media/i2c/mt9m032.c
+++ b/drivers/media/i2c/mt9m032.c
@@ -799,7 +799,7 @@ static int mt9m032_probe(struct i2c_client *client,
sensor->subdev.ctrl_handler = &sensor->ctrls;
sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
- ret = media_entity_init(&sensor->subdev.entity, 1, &sensor->pad, 0);
+ ret = media_entity_init(&sensor->subdev.entity, 1, &sensor->pad);
if (ret < 0)
goto error_ctrl;
diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c
index 0db15f528ac1..e3c5af82b7c1 100644
--- a/drivers/media/i2c/mt9p031.c
+++ b/drivers/media/i2c/mt9p031.c
@@ -1112,7 +1112,7 @@ static int mt9p031_probe(struct i2c_client *client,
mt9p031->subdev.internal_ops = &mt9p031_subdev_internal_ops;
mt9p031->pad.flags = MEDIA_PAD_FL_SOURCE;
- ret = media_entity_init(&mt9p031->subdev.entity, 1, &mt9p031->pad, 0);
+ ret = media_entity_init(&mt9p031->subdev.entity, 1, &mt9p031->pad);
if (ret < 0)
goto done;
diff --git a/drivers/media/i2c/mt9t001.c b/drivers/media/i2c/mt9t001.c
index 8ae99f7f254c..1dae1a98bc85 100644
--- a/drivers/media/i2c/mt9t001.c
+++ b/drivers/media/i2c/mt9t001.c
@@ -933,7 +933,7 @@ static int mt9t001_probe(struct i2c_client *client,
mt9t001->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
mt9t001->pad.flags = MEDIA_PAD_FL_SOURCE;
- ret = media_entity_init(&mt9t001->subdev.entity, 1, &mt9t001->pad, 0);
+ ret = media_entity_init(&mt9t001->subdev.entity, 1, &mt9t001->pad);
done:
if (ret < 0) {
diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c
index 977f4006edbd..980011aa039d 100644
--- a/drivers/media/i2c/mt9v032.c
+++ b/drivers/media/i2c/mt9v032.c
@@ -1046,7 +1046,7 @@ static int mt9v032_probe(struct i2c_client *client,
mt9v032->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE;
- ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad, 0);
+ ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad);
if (ret < 0)
goto err;
diff --git a/drivers/media/i2c/noon010pc30.c b/drivers/media/i2c/noon010pc30.c
index f197b6cbd407..a9761251b970 100644
--- a/drivers/media/i2c/noon010pc30.c
+++ b/drivers/media/i2c/noon010pc30.c
@@ -780,7 +780,7 @@ static int noon010_probe(struct i2c_client *client,
info->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
- ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
+ ret = media_entity_init(&sd->entity, 1, &info->pad);
if (ret < 0)
goto np_err;
diff --git a/drivers/media/i2c/ov2659.c b/drivers/media/i2c/ov2659.c
index 6edffc7b74e3..39f2d2cfdc9c 100644
--- a/drivers/media/i2c/ov2659.c
+++ b/drivers/media/i2c/ov2659.c
@@ -1450,7 +1450,7 @@ static int ov2659_probe(struct i2c_client *client,
#if defined(CONFIG_MEDIA_CONTROLLER)
ov2659->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
- ret = media_entity_init(&sd->entity, 1, &ov2659->pad, 0);
+ ret = media_entity_init(&sd->entity, 1, &ov2659->pad);
if (ret < 0) {
v4l2_ctrl_handler_free(&ov2659->ctrls);
return ret;
diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c
index 2bc473385c91..6a6747343512 100644
--- a/drivers/media/i2c/ov9650.c
+++ b/drivers/media/i2c/ov9650.c
@@ -1501,7 +1501,7 @@ static int ov965x_probe(struct i2c_client *client,
ov965x->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
- ret = media_entity_init(&sd->entity, 1, &ov965x->pad, 0);
+ ret = media_entity_init(&sd->entity, 1, &ov965x->pad);
if (ret < 0)
return ret;
diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c
index 53c5ea89f0b9..6d167428727d 100644
--- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c
+++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c
@@ -1691,7 +1691,7 @@ static int s5c73m3_probe(struct i2c_client *client,
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
ret = media_entity_init(&sd->entity, S5C73M3_NUM_PADS,
- state->sensor_pads, 0);
+ state->sensor_pads);
if (ret < 0)
return ret;
@@ -1707,7 +1707,7 @@ static int s5c73m3_probe(struct i2c_client *client,
oif_sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
ret = media_entity_init(&oif_sd->entity, OIF_NUM_PADS,
- state->oif_pads, 0);
+ state->oif_pads);
if (ret < 0)
return ret;
diff --git a/drivers/media/i2c/s5k4ecgx.c b/drivers/media/i2c/s5k4ecgx.c
index 97084237275d..d207ddce31b6 100644
--- a/drivers/media/i2c/s5k4ecgx.c
+++ b/drivers/media/i2c/s5k4ecgx.c
@@ -962,7 +962,7 @@ static int s5k4ecgx_probe(struct i2c_client *client,
priv->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
- ret = media_entity_init(&sd->entity, 1, &priv->pad, 0);
+ ret = media_entity_init(&sd->entity, 1, &priv->pad);
if (ret)
return ret;
diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c
index 774e0d0c94cb..30a9ca62e034 100644
--- a/drivers/media/i2c/s5k5baf.c
+++ b/drivers/media/i2c/s5k5baf.c
@@ -1905,7 +1905,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state,
state->cis_pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
- ret = media_entity_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad, 0);
+ ret = media_entity_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad);
if (ret < 0)
goto err;
@@ -1920,7 +1920,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state,
state->pads[PAD_CIS].flags = MEDIA_PAD_FL_SINK;
state->pads[PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
- ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads, 0);
+ ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads);
if (!ret)
return 0;
diff --git a/drivers/media/i2c/s5k6a3.c b/drivers/media/i2c/s5k6a3.c
index bc389d5e42ae..617a065bde6f 100644
--- a/drivers/media/i2c/s5k6a3.c
+++ b/drivers/media/i2c/s5k6a3.c
@@ -333,7 +333,7 @@ static int s5k6a3_probe(struct i2c_client *client,
sensor->format.height = S5K6A3_DEFAULT_HEIGHT;
sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
- ret = media_entity_init(&sd->entity, 1, &sensor->pad, 0);
+ ret = media_entity_init(&sd->entity, 1, &sensor->pad);
if (ret < 0)
return ret;
diff --git a/drivers/media/i2c/s5k6aa.c b/drivers/media/i2c/s5k6aa.c
index d0ad6a25bdab..39a461f9d9bb 100644
--- a/drivers/media/i2c/s5k6aa.c
+++ b/drivers/media/i2c/s5k6aa.c
@@ -1578,7 +1578,7 @@ static int s5k6aa_probe(struct i2c_client *client,
s5k6aa->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
- ret = media_entity_init(&sd->entity, 1, &s5k6aa->pad, 0);
+ ret = media_entity_init(&sd->entity, 1, &s5k6aa->pad);
if (ret)
return ret;
diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 636ebd6fe5dc..308613ea0aed 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2488,7 +2488,7 @@ static int smiapp_register_subdevs(struct smiapp_sensor *sensor)
continue;
rval = media_entity_init(&this->sd.entity,
- this->npads, this->pads, 0);
+ this->npads, this->pads);
if (rval) {
dev_err(&client->dev,
"media_entity_init failed\n");
@@ -3078,7 +3078,7 @@ static int smiapp_probe(struct i2c_client *client,
sensor->src->pads[0].flags = MEDIA_PAD_FL_SOURCE;
rval = media_entity_init(&sensor->src->sd.entity, 2,
- sensor->src->pads, 0);
+ sensor->src->pads);
if (rval < 0)
return rval;
diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index d0dd83d7a38e..39f47044af24 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -1880,7 +1880,7 @@ static int tc358743_probe(struct i2c_client *client,
}
state->pad.flags = MEDIA_PAD_FL_SOURCE;
- err = media_entity_init(&sd->entity, 1, &state->pad, 0);
+ err = media_entity_init(&sd->entity, 1, &state->pad);
if (err < 0)
goto err_hdl;
diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c
index a93985a9b070..11801636d901 100644
--- a/drivers/media/i2c/tvp514x.c
+++ b/drivers/media/i2c/tvp514x.c
@@ -1097,7 +1097,7 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
decoder->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
decoder->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
- ret = media_entity_init(&decoder->sd.entity, 1, &decoder->pad, 0);
+ ret = media_entity_init(&decoder->sd.entity, 1, &decoder->pad);
if (ret < 0) {
v4l2_err(sd, "%s decoder driver failed to register !!\n",
sd->name);
diff --git a/drivers/media/i2c/tvp7002.c b/drivers/media/i2c/tvp7002.c
index f617d8b745ee..3630f3e2a4c7 100644
--- a/drivers/media/i2c/tvp7002.c
+++ b/drivers/media/i2c/tvp7002.c
@@ -1014,7 +1014,7 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
device->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
- error = media_entity_init(&device->sd.entity, 1, &device->pad, 0);
+ error = media_entity_init(&device->sd.entity, 1, &device->pad);
if (error < 0)
return error;
#endif
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index 6985d5c53632..e8451a4a403b 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -68,7 +68,6 @@ void graph_obj_remove(struct media_graph_obj *gobj)
* media_entity_init - Initialize a media entity
*
* @num_pads: Total number of sink and source pads.
- * @extra_links: Initial estimate of the number of extra links.
* @pads: Array of 'num_pads' pads.
*
* The total number of pads is an intrinsic property of entities known by the
@@ -90,10 +89,10 @@ void graph_obj_remove(struct media_graph_obj *gobj)
*/
int
media_entity_init(struct media_entity *entity, u16 num_pads,
- struct media_pad *pads, u16 extra_links)
+ struct media_pad *pads)
{
struct media_link *links;
- unsigned int max_links = num_pads + extra_links;
+ unsigned int max_links = num_pads;
unsigned int i;
links = kzalloc(max_links * sizeof(links[0]), GFP_KERNEL);
diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c b/drivers/media/platform/exynos4-is/fimc-capture.c
index cfebf292e15a..0627a93b2f3b 100644
--- a/drivers/media/platform/exynos4-is/fimc-capture.c
+++ b/drivers/media/platform/exynos4-is/fimc-capture.c
@@ -1804,7 +1804,7 @@ static int fimc_register_capture_device(struct fimc_dev *fimc,
vid_cap->wb_fmt.code = fmt->mbus_code;
vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
- ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
+ ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad);
if (ret)
goto err_free_ctx;
@@ -1897,7 +1897,7 @@ int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK;
fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
- fimc->vid_cap.sd_pads, 0);
+ fimc->vid_cap.sd_pads);
if (ret)
return ret;
diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c
index 76b6b4d14616..b7dc5ac66e36 100644
--- a/drivers/media/platform/exynos4-is/fimc-isp-video.c
+++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c
@@ -618,7 +618,7 @@ int fimc_isp_video_device_register(struct fimc_isp *isp,
vdev->lock = &isp->video_lock;
iv->pad.flags = MEDIA_PAD_FL_SINK;
- ret = media_entity_init(&vdev->entity, 1, &iv->pad, 0);
+ ret = media_entity_init(&vdev->entity, 1, &iv->pad);
if (ret < 0)
return ret;
diff --git a/drivers/media/platform/exynos4-is/fimc-isp.c b/drivers/media/platform/exynos4-is/fimc-isp.c
index 5d78f5716f3b..f52eebf765c1 100644
--- a/drivers/media/platform/exynos4-is/fimc-isp.c
+++ b/drivers/media/platform/exynos4-is/fimc-isp.c
@@ -709,7 +709,7 @@ int fimc_isp_subdev_create(struct fimc_isp *isp)
isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_FIFO].flags = MEDIA_PAD_FL_SOURCE;
isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_DMA].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, FIMC_ISP_SD_PADS_NUM,
- isp->subdev_pads, 0);
+ isp->subdev_pads);
if (ret)
return ret;
diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c
index ca6261a86a5f..e8f707d1729b 100644
--- a/drivers/media/platform/exynos4-is/fimc-lite.c
+++ b/drivers/media/platform/exynos4-is/fimc-lite.c
@@ -1322,7 +1322,7 @@ static int fimc_lite_subdev_registered(struct v4l2_subdev *sd)
return ret;
fimc->vd_pad.flags = MEDIA_PAD_FL_SINK;
- ret = media_entity_init(&vfd->entity, 1, &fimc->vd_pad, 0);
+ ret = media_entity_init(&vfd->entity, 1, &fimc->vd_pad);
if (ret < 0)
return ret;
@@ -1437,7 +1437,7 @@ static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE;
fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, FLITE_SD_PADS_NUM,
- fimc->subdev_pads, 0);
+ fimc->subdev_pads);
if (ret)
return ret;
diff --git a/drivers/media/platform/exynos4-is/fimc-m2m.c b/drivers/media/platform/exynos4-is/fimc-m2m.c
index 0ad1b6f84a27..b57daec48b21 100644
--- a/drivers/media/platform/exynos4-is/fimc-m2m.c
+++ b/drivers/media/platform/exynos4-is/fimc-m2m.c
@@ -738,7 +738,7 @@ int fimc_register_m2m_device(struct fimc_dev *fimc,
return PTR_ERR(fimc->m2m.m2m_dev);
}
- ret = media_entity_init(&vfd->entity, 0, NULL, 0);
+ ret = media_entity_init(&vfd->entity, 0, NULL);
if (ret)
goto err_me;
diff --git a/drivers/media/platform/exynos4-is/mipi-csis.c b/drivers/media/platform/exynos4-is/mipi-csis.c
index d74e1bec3d86..cf10cd783a86 100644
--- a/drivers/media/platform/exynos4-is/mipi-csis.c
+++ b/drivers/media/platform/exynos4-is/mipi-csis.c
@@ -866,7 +866,7 @@ static int s5pcsis_probe(struct platform_device *pdev)
state->pads[CSIS_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
state->pads[CSIS_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&state->sd.entity,
- CSIS_PADS_NUM, state->pads, 0);
+ CSIS_PADS_NUM, state->pads);
if (ret < 0)
goto e_clkdis;
diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c
index a6a61cce43dd..3b10304b580b 100644
--- a/drivers/media/platform/omap3isp/ispccdc.c
+++ b/drivers/media/platform/omap3isp/ispccdc.c
@@ -2650,7 +2650,7 @@ static int ccdc_init_entities(struct isp_ccdc_device *ccdc)
pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &ccdc_media_ops;
- ret = media_entity_init(me, CCDC_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, CCDC_PADS_NUM, pads);
if (ret < 0)
return ret;
diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c
index 38e6a974c5b1..e1b5f5bea541 100644
--- a/drivers/media/platform/omap3isp/ispccp2.c
+++ b/drivers/media/platform/omap3isp/ispccp2.c
@@ -1071,7 +1071,7 @@ static int ccp2_init_entities(struct isp_ccp2_device *ccp2)
pads[CCP2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &ccp2_media_ops;
- ret = media_entity_init(me, CCP2_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, CCP2_PADS_NUM, pads);
if (ret < 0)
return ret;
diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c
index a78338d012b4..6fff92f0813a 100644
--- a/drivers/media/platform/omap3isp/ispcsi2.c
+++ b/drivers/media/platform/omap3isp/ispcsi2.c
@@ -1245,7 +1245,7 @@ static int csi2_init_entities(struct isp_csi2_device *csi2)
| MEDIA_PAD_FL_MUST_CONNECT;
me->ops = &csi2_media_ops;
- ret = media_entity_init(me, CSI2_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, CSI2_PADS_NUM, pads);
if (ret < 0)
return ret;
diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c
index 13803270d104..b440c6342ca4 100644
--- a/drivers/media/platform/omap3isp/isppreview.c
+++ b/drivers/media/platform/omap3isp/isppreview.c
@@ -2282,7 +2282,7 @@ static int preview_init_entities(struct isp_prev_device *prev)
pads[PREV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &preview_media_ops;
- ret = media_entity_init(me, PREV_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, PREV_PADS_NUM, pads);
if (ret < 0)
return ret;
diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c
index 7cfb43dc0ffd..3deb1ec4a973 100644
--- a/drivers/media/platform/omap3isp/ispresizer.c
+++ b/drivers/media/platform/omap3isp/ispresizer.c
@@ -1728,7 +1728,7 @@ static int resizer_init_entities(struct isp_res_device *res)
pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &resizer_media_ops;
- ret = media_entity_init(me, RESZ_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, RESZ_PADS_NUM, pads);
if (ret < 0)
return ret;
diff --git a/drivers/media/platform/omap3isp/ispstat.c b/drivers/media/platform/omap3isp/ispstat.c
index 20434e83e801..92a31dd28ace 100644
--- a/drivers/media/platform/omap3isp/ispstat.c
+++ b/drivers/media/platform/omap3isp/ispstat.c
@@ -1029,7 +1029,7 @@ static int isp_stat_init_entities(struct ispstat *stat, const char *name,
stat->pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT;
me->ops = NULL;
- return media_entity_init(me, 1, &stat->pad, 0);
+ return media_entity_init(me, 1, &stat->pad);
}
int omap3isp_stat_init(struct ispstat *stat, const char *name,
diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c
index d285af18df7f..1809e52d2df9 100644
--- a/drivers/media/platform/omap3isp/ispvideo.c
+++ b/drivers/media/platform/omap3isp/ispvideo.c
@@ -1368,7 +1368,7 @@ int omap3isp_video_init(struct isp_video *video, const char *name)
if (IS_ERR(video->alloc_ctx))
return PTR_ERR(video->alloc_ctx);
- ret = media_entity_init(&video->video.entity, 1, &video->pad, 0);
+ ret = media_entity_init(&video->video.entity, 1, &video->pad);
if (ret < 0) {
vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
return ret;
diff --git a/drivers/media/platform/s3c-camif/camif-capture.c b/drivers/media/platform/s3c-camif/camif-capture.c
index 76e6289a5612..eae667eab1b9 100644
--- a/drivers/media/platform/s3c-camif/camif-capture.c
+++ b/drivers/media/platform/s3c-camif/camif-capture.c
@@ -1159,7 +1159,7 @@ int s3c_camif_register_video_node(struct camif_dev *camif, int idx)
goto err_vd_rel;
vp->pad.flags = MEDIA_PAD_FL_SINK;
- ret = media_entity_init(&vfd->entity, 1, &vp->pad, 0);
+ ret = media_entity_init(&vfd->entity, 1, &vp->pad);
if (ret)
goto err_vd_rel;
@@ -1575,7 +1575,7 @@ int s3c_camif_create_subdev(struct camif_dev *camif)
camif->pads[CAMIF_SD_PAD_SOURCE_P].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, CAMIF_SD_PADS_NUM,
- camif->pads, 0);
+ camif->pads);
if (ret)
return ret;
diff --git a/drivers/media/platform/vsp1/vsp1_entity.c b/drivers/media/platform/vsp1/vsp1_entity.c
index fd95a75b04f4..619942ff2058 100644
--- a/drivers/media/platform/vsp1/vsp1_entity.c
+++ b/drivers/media/platform/vsp1/vsp1_entity.c
@@ -220,7 +220,7 @@ int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
/* Initialize the media entity. */
return media_entity_init(&entity->subdev.entity, num_pads,
- entity->pads, 0);
+ entity->pads);
}
void vsp1_entity_destroy(struct vsp1_entity *entity)
diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c
index 3c124c14ce14..17f08973f835 100644
--- a/drivers/media/platform/vsp1/vsp1_video.c
+++ b/drivers/media/platform/vsp1/vsp1_video.c
@@ -1221,7 +1221,7 @@ int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf)
video->pipe.state = VSP1_PIPELINE_STOPPED;
/* Initialize the media entity... */
- ret = media_entity_init(&video->video.entity, 1, &video->pad, 0);
+ ret = media_entity_init(&video->video.entity, 1, &video->pad);
if (ret < 0)
return ret;
diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c
index e779c93cb015..f7f9aa353a55 100644
--- a/drivers/media/platform/xilinx/xilinx-dma.c
+++ b/drivers/media/platform/xilinx/xilinx-dma.c
@@ -676,7 +676,7 @@ int xvip_dma_init(struct xvip_composite_device *xdev, struct xvip_dma *dma,
dma->pad.flags = type == V4L2_BUF_TYPE_VIDEO_CAPTURE
? MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
- ret = media_entity_init(&dma->video.entity, 1, &dma->pad, 0);
+ ret = media_entity_init(&dma->video.entity, 1, &dma->pad);
if (ret < 0)
goto error;
diff --git a/drivers/media/platform/xilinx/xilinx-tpg.c b/drivers/media/platform/xilinx/xilinx-tpg.c
index b5f7d5ecb7f6..285976aa0f4d 100644
--- a/drivers/media/platform/xilinx/xilinx-tpg.c
+++ b/drivers/media/platform/xilinx/xilinx-tpg.c
@@ -836,7 +836,7 @@ static int xtpg_probe(struct platform_device *pdev)
subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
subdev->entity.ops = &xtpg_media_ops;
- ret = media_entity_init(&subdev->entity, xtpg->npads, xtpg->pads, 0);
+ ret = media_entity_init(&subdev->entity, xtpg->npads, xtpg->pads);
if (ret < 0)
goto error;
diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
index c6ff8968286a..8f04b125486f 100644
--- a/drivers/media/usb/cx231xx/cx231xx-video.c
+++ b/drivers/media/usb/cx231xx/cx231xx-video.c
@@ -2175,7 +2175,7 @@ int cx231xx_register_analog_devices(struct cx231xx *dev)
cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
#if defined(CONFIG_MEDIA_CONTROLLER)
dev->video_pad.flags = MEDIA_PAD_FL_SINK;
- ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0);
+ ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad);
if (ret < 0)
dev_err(dev->dev, "failed to initialize video media entity!\n");
#endif
@@ -2202,7 +2202,7 @@ int cx231xx_register_analog_devices(struct cx231xx *dev)
#if defined(CONFIG_MEDIA_CONTROLLER)
dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
- ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0);
+ ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
if (ret < 0)
dev_err(dev->dev, "failed to initialize vbi media entity!\n");
#endif
diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c
index dc56a59ecadc..245445491516 100644
--- a/drivers/media/usb/uvc/uvc_entity.c
+++ b/drivers/media/usb/uvc/uvc_entity.c
@@ -89,10 +89,10 @@ static int uvc_mc_init_entity(struct uvc_entity *entity)
sizeof(entity->subdev.name));
ret = media_entity_init(&entity->subdev.entity,
- entity->num_pads, entity->pads, 0);
+ entity->num_pads, entity->pads);
} else if (entity->vdev != NULL) {
ret = media_entity_init(&entity->vdev->entity,
- entity->num_pads, entity->pads, 0);
+ entity->num_pads, entity->pads);
if (entity->flags & UVC_ENTITY_FLAG_DEFAULT)
entity->vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT;
} else
diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c
index abdcffabcb59..0ccf9a903e1e 100644
--- a/drivers/media/v4l2-core/tuner-core.c
+++ b/drivers/media/v4l2-core/tuner-core.c
@@ -699,7 +699,7 @@ register_client:
t->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_TUNER;
t->sd.entity.name = t->name;
- ret = media_entity_init(&t->sd.entity, 1, &t->pad, 0);
+ ret = media_entity_init(&t->sd.entity, 1, &t->pad);
if (ret < 0) {
tuner_err("failed to initialize media entity!\n");
kfree(t);
diff --git a/drivers/media/v4l2-core/v4l2-flash-led-class.c b/drivers/media/v4l2-core/v4l2-flash-led-class.c
index 5bdfb8d5263a..34c489fed55e 100644
--- a/drivers/media/v4l2-core/v4l2-flash-led-class.c
+++ b/drivers/media/v4l2-core/v4l2-flash-led-class.c
@@ -651,7 +651,7 @@ struct v4l2_flash *v4l2_flash_init(
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
strlcpy(sd->name, config->dev_name, sizeof(sd->name));
- ret = media_entity_init(&sd->entity, 0, NULL, 0);
+ ret = media_entity_init(&sd->entity, 0, NULL);
if (ret < 0)
return ERR_PTR(ret);
diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipe.c b/drivers/staging/media/davinci_vpfe/dm365_ipipe.c
index 1bbb90ce0086..b89a057b8b7e 100644
--- a/drivers/staging/media/davinci_vpfe/dm365_ipipe.c
+++ b/drivers/staging/media/davinci_vpfe/dm365_ipipe.c
@@ -1839,7 +1839,7 @@ vpfe_ipipe_init(struct vpfe_ipipe_device *ipipe, struct platform_device *pdev)
v4l2_ctrl_handler_setup(&ipipe->ctrls);
sd->ctrl_handler = &ipipe->ctrls;
- return media_entity_init(me, IPIPE_PADS_NUM, pads, 0);
+ return media_entity_init(me, IPIPE_PADS_NUM, pads);
}
/*
diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c
index 8b230541b1d1..8fb676186898 100644
--- a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c
+++ b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c
@@ -1026,7 +1026,7 @@ int vpfe_ipipeif_init(struct vpfe_ipipeif_device *ipipeif,
ipipeif->output = IPIPEIF_OUTPUT_NONE;
me->ops = &ipipeif_media_ops;
- ret = media_entity_init(me, IPIPEIF_NUM_PADS, pads, 0);
+ ret = media_entity_init(me, IPIPEIF_NUM_PADS, pads);
if (ret)
goto fail;
diff --git a/drivers/staging/media/davinci_vpfe/dm365_isif.c b/drivers/staging/media/davinci_vpfe/dm365_isif.c
index 80907b464412..b1f01adfa7c8 100644
--- a/drivers/staging/media/davinci_vpfe/dm365_isif.c
+++ b/drivers/staging/media/davinci_vpfe/dm365_isif.c
@@ -2052,7 +2052,7 @@ int vpfe_isif_init(struct vpfe_isif_device *isif, struct platform_device *pdev)
isif->input = ISIF_INPUT_NONE;
isif->output = ISIF_OUTPUT_NONE;
me->ops = &isif_media_ops;
- status = media_entity_init(me, ISIF_PADS_NUM, pads, 0);
+ status = media_entity_init(me, ISIF_PADS_NUM, pads);
if (status)
goto isif_fail;
isif->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
diff --git a/drivers/staging/media/davinci_vpfe/dm365_resizer.c b/drivers/staging/media/davinci_vpfe/dm365_resizer.c
index acb293ed9c91..692789aa22f4 100644
--- a/drivers/staging/media/davinci_vpfe/dm365_resizer.c
+++ b/drivers/staging/media/davinci_vpfe/dm365_resizer.c
@@ -1915,7 +1915,7 @@ int vpfe_resizer_init(struct vpfe_resizer_device *vpfe_rsz,
vpfe_rsz->crop_resizer.output2 = RESIZER_CROP_OUTPUT_NONE;
vpfe_rsz->crop_resizer.rsz_device = vpfe_rsz;
me->ops = &resizer_media_ops;
- ret = media_entity_init(me, RESIZER_CROP_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, RESIZER_CROP_PADS_NUM, pads);
if (ret)
return ret;
@@ -1937,7 +1937,7 @@ int vpfe_resizer_init(struct vpfe_resizer_device *vpfe_rsz,
vpfe_rsz->resizer_a.output = RESIZER_OUTPUT_NONE;
vpfe_rsz->resizer_a.rsz_device = vpfe_rsz;
me->ops = &resizer_media_ops;
- ret = media_entity_init(me, RESIZER_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, RESIZER_PADS_NUM, pads);
if (ret)
return ret;
@@ -1959,7 +1959,7 @@ int vpfe_resizer_init(struct vpfe_resizer_device *vpfe_rsz,
vpfe_rsz->resizer_b.output = RESIZER_OUTPUT_NONE;
vpfe_rsz->resizer_b.rsz_device = vpfe_rsz;
me->ops = &resizer_media_ops;
- ret = media_entity_init(me, RESIZER_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, RESIZER_PADS_NUM, pads);
if (ret)
return ret;
diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c
index 87048a14c34d..61a8d5beff58 100644
--- a/drivers/staging/media/davinci_vpfe/vpfe_video.c
+++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c
@@ -1594,7 +1594,7 @@ int vpfe_video_init(struct vpfe_video_device *video, const char *name)
spin_lock_init(&video->dma_queue_lock);
mutex_init(&video->lock);
ret = media_entity_init(&video->video_dev.entity,
- 1, &video->pad, 0);
+ 1, &video->pad);
if (ret < 0)
return ret;
diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c
index bc83f8246101..e936cfc218cb 100644
--- a/drivers/staging/media/omap4iss/iss_csi2.c
+++ b/drivers/staging/media/omap4iss/iss_csi2.c
@@ -1271,7 +1271,7 @@ static int csi2_init_entities(struct iss_csi2_device *csi2, const char *subname)
pads[CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
me->ops = &csi2_media_ops;
- ret = media_entity_init(me, CSI2_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, CSI2_PADS_NUM, pads);
if (ret < 0)
return ret;
diff --git a/drivers/staging/media/omap4iss/iss_ipipe.c b/drivers/staging/media/omap4iss/iss_ipipe.c
index f94a59299a83..e1a7b7ba7362 100644
--- a/drivers/staging/media/omap4iss/iss_ipipe.c
+++ b/drivers/staging/media/omap4iss/iss_ipipe.c
@@ -513,7 +513,7 @@ static int ipipe_init_entities(struct iss_ipipe_device *ipipe)
pads[IPIPE_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &ipipe_media_ops;
- ret = media_entity_init(me, IPIPE_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, IPIPE_PADS_NUM, pads);
if (ret < 0)
return ret;
diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c
index c0da13d55865..be5f80d7b5dc 100644
--- a/drivers/staging/media/omap4iss/iss_ipipeif.c
+++ b/drivers/staging/media/omap4iss/iss_ipipeif.c
@@ -743,7 +743,7 @@ static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif)
pads[IPIPEIF_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &ipipeif_media_ops;
- ret = media_entity_init(me, IPIPEIF_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, IPIPEIF_PADS_NUM, pads);
if (ret < 0)
return ret;
diff --git a/drivers/staging/media/omap4iss/iss_resizer.c b/drivers/staging/media/omap4iss/iss_resizer.c
index 5030cf3cd34c..91e724085dba 100644
--- a/drivers/staging/media/omap4iss/iss_resizer.c
+++ b/drivers/staging/media/omap4iss/iss_resizer.c
@@ -787,7 +787,7 @@ static int resizer_init_entities(struct iss_resizer_device *resizer)
pads[RESIZER_PAD_SOURCE_MEM].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &resizer_media_ops;
- ret = media_entity_init(me, RESIZER_PADS_NUM, pads, 0);
+ ret = media_entity_init(me, RESIZER_PADS_NUM, pads);
if (ret < 0)
return ret;
diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c
index 40405d8710a6..bae67742706f 100644
--- a/drivers/staging/media/omap4iss/iss_video.c
+++ b/drivers/staging/media/omap4iss/iss_video.c
@@ -1104,7 +1104,7 @@ int omap4iss_video_init(struct iss_video *video, const char *name)
return -EINVAL;
}
- ret = media_entity_init(&video->video.entity, 1, &video->pad, 0);
+ ret = media_entity_init(&video->video.entity, 1, &video->pad);
if (ret < 0)
return ret;
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index 738e1d5d25dc..be6885e7c8ed 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -177,7 +177,7 @@ void graph_obj_init(struct media_device *mdev,
void graph_obj_remove(struct media_graph_obj *gobj);
int media_entity_init(struct media_entity *entity, u16 num_pads,
- struct media_pad *pads, u16 extra_links);
+ struct media_pad *pads);
void media_entity_cleanup(struct media_entity *entity);
int media_entity_create_link(struct media_entity *source, u16 source_pad,
--
2.4.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints
[not found] <cover.1438954897.git.mchehab@osg.samsung.com>
2015-08-07 14:20 ` [PATCH RFC v2 07/16] media: get rid of unused "extra_links" param on media_entity_init() Mauro Carvalho Chehab
@ 2015-08-11 12:09 ` Mauro Carvalho Chehab
2015-08-11 12:09 ` [PATCH RFC v2 10/16] media: rename the function that create pad links Mauro Carvalho Chehab
2015-08-11 12:25 ` [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints Hans Verkuil
1 sibling, 2 replies; 6+ messages in thread
From: Mauro Carvalho Chehab @ 2015-08-11 12:09 UTC (permalink / raw)
To: linux-arm-kernel
As we'll need to create links between entities and interfaces,
we need to identify the link endpoints by the media_graph_obj.
Most of the changes here was done by this small script:
for i in `find drivers/media -type f` `find drivers/staging/media -type f`; do
perl -ne 's,([\w]+)\-\>(source|sink)\-\>entity,gobj_to_pad($1->$2)->entity,; print $_;' <$i >a && mv a $i
done
Please note that, while we're now using graph_obj to reference
the link endpoints, we're still assuming that all endpoints are
pads. This is true for all existing links, so no problems
are expected so far.
Yet, as we introduce links between entities and interfaces,
we may need to change some existing code to work with links
that aren't pad to pad.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index 842b9c8f80c6..4de93d6b203e 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -635,7 +635,9 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe)
for (i = 0; i < entity->num_links; i++) {
link = &entity->links[i];
- if (link->sink->entity == entity) {
+ if (link->sink.type != MEDIA_GRAPH_PAD)
+ continue;
+ if (gobj_to_pad(link->sink)->entity == entity) {
found_link = link;
n_links++;
if (link->flags & MEDIA_LNK_FL_ENABLED)
@@ -658,14 +660,16 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe)
return -EINVAL;
}
- source = found_link->source->entity;
+ source = gobj_to_pad(found_link->source)->entity;
fepriv->pipe_start_entity = source;
for (i = 0; i < source->num_links; i++) {
struct media_entity *sink;
int flags = 0;
link = &source->links[i];
- sink = link->sink->entity;
+ if (link->sink.type != MEDIA_GRAPH_PAD)
+ continue;
+ sink = gobj_to_pad(link->sink)->entity;
if (sink == entity)
flags = MEDIA_LNK_FL_ENABLED;
diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
index a95ca981aabb..40597e9a0ff0 100644
--- a/drivers/media/media-device.c
+++ b/drivers/media/media-device.c
@@ -155,14 +155,19 @@ static long __media_device_enum_links(struct media_device *mdev,
list_for_each_entry(ent_link, &entity->links, list) {
struct media_link_desc link;
+ /* Only PAD to PAD links should be enumerated with legacy API */
+ if (ent_link->source->type != MEDIA_GRAPH_PAD ||
+ ent_link->sink->type != MEDIA_GRAPH_PAD)
+ continue;
+
/* Ignore backlinks. */
- if (ent_link->source->entity != entity)
+ if (gobj_to_pad(ent_link->source)->entity != entity)
continue;
memset(&link, 0, sizeof(link));
- media_device_kpad_to_upad(ent_link->source,
+ media_device_kpad_to_upad(gobj_to_pad(ent_link->source),
&link.source);
- media_device_kpad_to_upad(ent_link->sink,
+ media_device_kpad_to_upad(gobj_to_pad(ent_link->sink),
&link.sink);
link.flags = ent_link->flags;
if (copy_to_user(ulink, &link, sizeof(*ulink)))
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index 4a42ccfeffab..c8bbf122f4a6 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -121,10 +121,15 @@ EXPORT_SYMBOL_GPL(media_entity_cleanup);
static struct media_entity *
media_entity_other(struct media_entity *entity, struct media_link *link)
{
- if (link->source->entity == entity)
- return link->sink->entity;
+ /* For now, we only do graph traversal with PADs */
+ if (link->sink->type != MEDIA_GRAPH_PAD ||
+ link->source->type != MEDIA_GRAPH_PAD)
+ return NULL;
+
+ if (gobj_to_pad(link->source)->entity == entity)
+ return gobj_to_pad(link->sink)->entity;
else
- return link->source->entity;
+ return gobj_to_pad(link->source)->entity;
}
/* push an entity to traversal stack */
@@ -217,6 +222,10 @@ media_entity_graph_walk_next(struct media_entity_graph *graph)
/* Get the entity in the other end of the link . */
next = media_entity_other(entity, link);
+ if (!next) {
+ list_rotate_left(&link_top(graph));
+ continue;
+ }
if (WARN_ON(next->id >= MEDIA_ENTITY_ENUM_MAX_ID))
return NULL;
@@ -285,8 +294,16 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity,
bitmap_fill(has_no_links, entity->num_pads);
list_for_each_entry(link, &entity->links, list) {
- struct media_pad *pad = link->sink->entity == entity
+ struct media_graph_obj *gobj;
+ struct media_pad *pad;
+
+ /* For now, ignore interface<->entity links */
+ if (link->sink->type != MEDIA_GRAPH_PAD)
+ continue;
+
+ gobj = gobj_to_pad(link->sink)->entity == entity
? link->sink : link->source;
+ pad = gobj_to_pad(gobj);
/* Mark that a pad is connected by a link. */
bitmap_clear(has_no_links, pad->index, 1);
@@ -304,7 +321,7 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity,
* Link validation will only take place for
* sink ends of the link that are enabled.
*/
- if (link->sink != pad ||
+ if (link->sink != gobj ||
!(link->flags & MEDIA_LNK_FL_ENABLED))
continue;
@@ -312,9 +329,10 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity,
if (ret < 0 && ret != -ENOIOCTLCMD) {
dev_dbg(entity->parent->dev,
"link validation failed for \"%s\":%u -> \"%s\":%u, error %d\n",
- entity->name, link->source->index,
- link->sink->entity->name,
- link->sink->index, ret);
+ entity->name,
+ gobj_to_pad(link->source)->index,
+ gobj_to_pad(link->sink)->entity->name,
+ gobj_to_pad(link->sink)->index, ret);
goto error;
}
}
@@ -477,8 +495,8 @@ media_entity_create_link(struct media_entity *source, u16 source_pad,
if (link == NULL)
return -ENOMEM;
- link->source = &source->pads[source_pad];
- link->sink = &sink->pads[sink_pad];
+ link->source = &source->pads[source_pad].graph_obj;
+ link->sink = &sink->pads[sink_pad].graph_obj;
link->flags = flags;
/* Create the backlink. Backlinks are used to help graph traversal and
@@ -490,8 +508,8 @@ media_entity_create_link(struct media_entity *source, u16 source_pad,
return -ENOMEM;
}
- backlink->source = &source->pads[source_pad];
- backlink->sink = &sink->pads[sink_pad];
+ backlink->source = &source->pads[source_pad].graph_obj;
+ backlink->sink = &sink->pads[sink_pad].graph_obj;
backlink->flags = flags;
link->reverse = backlink;
@@ -510,10 +528,10 @@ static void __media_entity_remove_link(struct media_entity *entity,
struct media_entity *remote;
unsigned int r = 0;
- if (link->source->entity == entity)
- remote = link->sink->entity;
+ if (gobj_to_pad(link->source)->entity == entity)
+ remote = gobj_to_pad(link->sink)->entity;
else
- remote = link->source->entity;
+ remote = gobj_to_pad(link->source)->entity;
list_for_each_entry_safe(rlink, tmp, &remote->links, list) {
if (rlink != link->reverse) {
@@ -521,7 +539,7 @@ static void __media_entity_remove_link(struct media_entity *entity,
continue;
}
- if (link->source->entity == entity)
+ if (gobj_to_pad(link->source)->entity == entity)
remote->num_backlinks--;
if (--remote->num_links == 0)
@@ -564,16 +582,19 @@ static int __media_entity_setup_link_notify(struct media_link *link, u32 flags)
int ret;
/* Notify both entities. */
- ret = media_entity_call(link->source->entity, link_setup,
- link->source, link->sink, flags);
+ ret = media_entity_call(gobj_to_pad(link->source)->entity, link_setup,
+ gobj_to_pad(link->source),
+ gobj_to_pad(link->sink), flags);
if (ret < 0 && ret != -ENOIOCTLCMD)
return ret;
- ret = media_entity_call(link->sink->entity, link_setup,
- link->sink, link->source, flags);
+ ret = media_entity_call(gobj_to_pad(link->sink)->entity, link_setup,
+ gobj_to_pad(link->sink),
+ gobj_to_pad(link->source), flags);
if (ret < 0 && ret != -ENOIOCTLCMD) {
- media_entity_call(link->source->entity, link_setup,
- link->source, link->sink, link->flags);
+ media_entity_call(gobj_to_pad(link->source)->entity, link_setup,
+ gobj_to_pad(link->source),
+ gobj_to_pad(link->sink), link->flags);
return ret;
}
@@ -617,8 +638,8 @@ int __media_entity_setup_link(struct media_link *link, u32 flags)
if (link->flags == flags)
return 0;
- source = link->source->entity;
- sink = link->sink->entity;
+ source = gobj_to_pad(link->source)->entity;
+ sink = gobj_to_pad(link->sink)->entity;
if (!(link->flags & MEDIA_LNK_FL_DYNAMIC) &&
(source->stream_count || sink->stream_count))
@@ -645,9 +666,9 @@ int media_entity_setup_link(struct media_link *link, u32 flags)
{
int ret;
- mutex_lock(&link->source->entity->parent->graph_mutex);
+ mutex_lock(&gobj_to_pad(link->source)->entity->parent->graph_mutex);
ret = __media_entity_setup_link(link, flags);
- mutex_unlock(&link->source->entity->parent->graph_mutex);
+ mutex_unlock(&gobj_to_pad(link->source)->entity->parent->graph_mutex);
return ret;
}
@@ -667,10 +688,10 @@ media_entity_find_link(struct media_pad *source, struct media_pad *sink)
struct media_link *link;
list_for_each_entry(link, &source->entity->links, list) {
- if (link->source->entity == source->entity &&
- link->source->index == source->index &&
- link->sink->entity == sink->entity &&
- link->sink->index == sink->index)
+ if (gobj_to_pad(link->source)->entity == source->entity &&
+ gobj_to_pad(link->source)->index == source->index &&
+ gobj_to_pad(link->sink)->entity == sink->entity &&
+ gobj_to_pad(link->sink)->index == sink->index)
return link;
}
@@ -696,11 +717,11 @@ struct media_pad *media_entity_remote_pad(struct media_pad *pad)
if (!(link->flags & MEDIA_LNK_FL_ENABLED))
continue;
- if (link->source == pad)
- return link->sink;
+ if (gobj_to_pad(link->source) == pad)
+ return gobj_to_pad(link->sink);
- if (link->sink == pad)
- return link->source;
+ if (gobj_to_pad(link->sink) == pad)
+ return gobj_to_pad(link->source);
}
return NULL;
diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index 4f5586a4cbff..f924148767ba 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -1091,7 +1091,7 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable)
static int fimc_md_link_notify(struct media_link *link, unsigned int flags,
unsigned int notification)
{
- struct media_entity *sink = link->sink->entity;
+ struct media_entity *sink = gobj_to_pad(link->sink)->entity;
int ret = 0;
/* Before link disconnection */
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 12be830d704f..7e2f4c9c0eef 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -822,8 +822,8 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
static int isp_pipeline_link_notify(struct media_link *link, u32 flags,
unsigned int notification)
{
- struct media_entity *source = link->source->entity;
- struct media_entity *sink = link->sink->entity;
+ struct media_entity *source = gobj_to_pad(link->source)->entity;
+ struct media_entity *sink = gobj_to_pad(link->sink)->entity;
int source_use = isp_pipeline_pm_use_count(source);
int sink_use = isp_pipeline_pm_use_count(sink);
int ret;
diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c
index 3b10304b580b..f01b540d1841 100644
--- a/drivers/media/platform/omap3isp/ispccdc.c
+++ b/drivers/media/platform/omap3isp/ispccdc.c
@@ -2419,7 +2419,7 @@ static int ccdc_link_validate(struct v4l2_subdev *sd,
if (ccdc->input == CCDC_INPUT_PARALLEL) {
struct isp_parallel_cfg *parcfg =
&((struct isp_bus_cfg *)
- media_entity_to_v4l2_subdev(link->source->entity)
+ media_entity_to_v4l2_subdev(gobj_to_pad(link->source)->entity)
->host_priv)->bus.parallel;
parallel_shift = parcfg->data_lane_shift * 2;
} else {
diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
index e8baff4d6290..55b41113426c 100644
--- a/drivers/media/usb/cx231xx/cx231xx-video.c
+++ b/drivers/media/usb/cx231xx/cx231xx-video.c
@@ -128,7 +128,7 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
return 0;
list_for_each_entry(link, &decoder->links, list) {
- if (link->sink->entity == decoder) {
+ if (gobj_to_pad(link->sink)->entity == decoder) {
found_link = link;
if (link->flags & MEDIA_LNK_FL_ENABLED)
active_links++;
@@ -139,12 +139,12 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
if (active_links == 1 || !found_link)
return 0;
- source = found_link->source->entity;
+ source = gobj_to_pad(found_link->source)->entity;
list_for_each_entry(link, &source->links, list) {
struct media_entity *sink;
int flags = 0;
- sink = link->sink->entity;
+ sink = gobj_to_pad(link->sink)->entity;
if (sink == entity)
flags = MEDIA_LNK_FL_ENABLED;
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 83615b8fb46a..87de18a7b1c4 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -523,9 +523,11 @@ int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd,
EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate_default);
static int
-v4l2_subdev_link_validate_get_format(struct media_pad *pad,
+v4l2_subdev_link_validate_get_format(struct media_graph_obj *gobj,
struct v4l2_subdev_format *fmt)
{
+ struct media_pad *pad = gobj_to_pad(gobj);
+
if (media_entity_type(pad->entity) == MEDIA_ENT_T_V4L2_SUBDEV) {
struct v4l2_subdev *sd =
media_entity_to_v4l2_subdev(pad->entity);
@@ -558,7 +560,7 @@ int v4l2_subdev_link_validate(struct media_link *link)
if (rval < 0)
return 0;
- sink = media_entity_to_v4l2_subdev(link->sink->entity);
+ sink = media_entity_to_v4l2_subdev(gobj_to_pad(link->sink)->entity);
rval = v4l2_subdev_call(sink, pad, link_validate, link,
&source_fmt, &sink_fmt);
diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c
index 9bfb725b9986..5556ffbd7619 100644
--- a/drivers/staging/media/omap4iss/iss.c
+++ b/drivers/staging/media/omap4iss/iss.c
@@ -142,7 +142,7 @@ int omap4iss_get_external_info(struct iss_pipeline *pipe,
fmt.pad = link->source->index;
fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
- ret = v4l2_subdev_call(media_entity_to_v4l2_subdev(link->sink->entity),
+ ret = v4l2_subdev_call(media_entity_to_v4l2_subdev(gobj_to_pad(link->sink)->entity),
pad, get_fmt, NULL, &fmt);
if (ret < 0)
return -EPIPE;
@@ -526,8 +526,8 @@ int omap4iss_pipeline_pm_use(struct media_entity *entity, int use)
static int iss_pipeline_link_notify(struct media_link *link, u32 flags,
unsigned int notification)
{
- struct media_entity *source = link->source->entity;
- struct media_entity *sink = link->sink->entity;
+ struct media_entity *source = gobj_to_pad(link->source)->entity;
+ struct media_entity *sink = gobj_to_pad(link->sink)->entity;
int source_use = iss_pipeline_pm_use_count(source);
int sink_use = iss_pipeline_pm_use_count(sink);
int ret;
diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c
index e936cfc218cb..47df6be236bc 100644
--- a/drivers/staging/media/omap4iss/iss_csi2.c
+++ b/drivers/staging/media/omap4iss/iss_csi2.c
@@ -1026,7 +1026,7 @@ static int csi2_link_validate(struct v4l2_subdev *sd, struct media_link *link,
struct iss_pipeline *pipe = to_iss_pipeline(&csi2->subdev.entity);
int rval;
- pipe->external = media_entity_to_v4l2_subdev(link->source->entity);
+ pipe->external = media_entity_to_v4l2_subdev(gobj_to_pad(link->source)->entity);
rval = omap4iss_get_external_info(pipe, link);
if (rval < 0)
return rval;
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index 403019035424..f6e2136480f1 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -43,6 +43,17 @@ enum media_graph_type {
MEDIA_GRAPH_LINK,
};
+/**
+ * enum media_graph_link_dir - direction of a link
+ *
+ * @MEDIA_LINK_DIR_BIDIRECTIONAL Link is bidirectional
+ * @MEDIA_LINK_DIR_PAD_0_TO_1 Link is unidirectional,
+ * from port 0 (source) to port 1 (sink)
+ */
+enum media_graph_link_dir {
+ MEDIA_LINK_DIR_BIDIRECTIONAL,
+ MEDIA_LINK_DIR_PORT0_TO_PORT1,
+};
/* Structs to represent the objects that belong to a media graph */
@@ -72,9 +83,9 @@ struct media_pipeline {
struct media_link {
struct list_head list;
- struct media_graph_obj graph_obj;
- struct media_pad *source; /* Source pad */
- struct media_pad *sink; /* Sink pad */
+ struct media_graph_obj graph_obj;
+ enum media_graph_link_dir dir;
+ struct media_graph_obj *source, *sink;
struct media_link *reverse; /* Link in the reverse direction */
unsigned long flags; /* Link flags (MEDIA_LNK_FL_*) */
};
@@ -115,6 +126,11 @@ struct media_entity {
u32 group_id; /* Entity group ID */
u16 num_pads; /* Number of sink and source pads */
+
+ /*
+ * Both num_links and num_backlinks are used only to report
+ * the number of links via MEDIA_IOC_ENUM_ENTITIES@media_device.c
+ */
u16 num_links; /* Number of existing links, both
* enabled and disabled */
u16 num_backlinks; /* Number of backlinks */
@@ -171,6 +187,12 @@ struct media_entity_graph {
#define gobj_to_entity(gobj) \
container_of(gobj, struct media_entity, graph_obj)
+#define gobj_to_link(gobj) \
+ container_of(gobj, struct media_link, graph_obj)
+
+#define gobj_to_pad(gobj) \
+ container_of(gobj, struct media_pad, graph_obj)
+
void graph_obj_init(struct media_device *mdev,
enum media_graph_type type,
struct media_graph_obj *gobj);
--
2.4.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH RFC v2 10/16] media: rename the function that create pad links
2015-08-11 12:09 ` [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints Mauro Carvalho Chehab
@ 2015-08-11 12:09 ` Mauro Carvalho Chehab
2015-08-11 12:25 ` [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints Hans Verkuil
1 sibling, 0 replies; 6+ messages in thread
From: Mauro Carvalho Chehab @ 2015-08-11 12:09 UTC (permalink / raw)
To: linux-arm-kernel
Now that a link can be either between two different graph
objects, we'll need to add more functions to create links.
So, rename the existing one that create links only between
two pads as media_create_pad_link().
No functional changes.
This patch was created via this shell script:
for i in $(find drivers/media -name '*.[ch]' -type f) $(find drivers/staging/media -name '*.[ch]' -type f) $(find include/ -name '*.h' -type f) ; do sed s,media_entity_create_link,media_create_pad_link,g <$i >a && mv a $i; done
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
index 2fdcbb5f000a..65f59f2124b4 100644
--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -412,16 +412,16 @@ void dvb_create_media_graph(struct dvb_adapter *adap)
}
if (tuner && fe)
- media_entity_create_link(tuner, 0, fe, 0, 0);
+ media_create_pad_link(tuner, 0, fe, 0, 0);
if (fe && demux)
- media_entity_create_link(fe, 1, demux, 0, MEDIA_LNK_FL_ENABLED);
+ media_create_pad_link(fe, 1, demux, 0, MEDIA_LNK_FL_ENABLED);
if (demux && dvr)
- media_entity_create_link(demux, 1, dvr, 0, MEDIA_LNK_FL_ENABLED);
+ media_create_pad_link(demux, 1, dvr, 0, MEDIA_LNK_FL_ENABLED);
if (demux && ca)
- media_entity_create_link(demux, 1, ca, 0, MEDIA_LNK_FL_ENABLED);
+ media_create_pad_link(demux, 1, ca, 0, MEDIA_LNK_FL_ENABLED);
}
EXPORT_SYMBOL_GPL(dvb_create_media_graph);
#endif
diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c
index 6d167428727d..c81bfbfea32f 100644
--- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c
+++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c
@@ -1482,11 +1482,11 @@ static int s5c73m3_oif_registered(struct v4l2_subdev *sd)
return ret;
}
- ret = media_entity_create_link(&state->sensor_sd.entity,
+ ret = media_create_pad_link(&state->sensor_sd.entity,
S5C73M3_ISP_PAD, &state->oif_sd.entity, OIF_ISP_PAD,
MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
- ret = media_entity_create_link(&state->sensor_sd.entity,
+ ret = media_create_pad_link(&state->sensor_sd.entity,
S5C73M3_JPEG_PAD, &state->oif_sd.entity, OIF_JPEG_PAD,
MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c
index 30a9ca62e034..d3bff30bcb6f 100644
--- a/drivers/media/i2c/s5k5baf.c
+++ b/drivers/media/i2c/s5k5baf.c
@@ -1756,7 +1756,7 @@ static int s5k5baf_registered(struct v4l2_subdev *sd)
v4l2_err(sd, "failed to register subdev %s\n",
state->cis_sd.name);
else
- ret = media_entity_create_link(&state->cis_sd.entity, PAD_CIS,
+ ret = media_create_pad_link(&state->cis_sd.entity, PAD_CIS,
&state->sd.entity, PAD_CIS,
MEDIA_LNK_FL_IMMUTABLE |
MEDIA_LNK_FL_ENABLED);
diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 308613ea0aed..5aa49eb393a9 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2495,7 +2495,7 @@ static int smiapp_register_subdevs(struct smiapp_sensor *sensor)
return rval;
}
- rval = media_entity_create_link(&this->sd.entity,
+ rval = media_create_pad_link(&this->sd.entity,
this->source_pad,
&last->sd.entity,
last->sink_pad,
@@ -2503,7 +2503,7 @@ static int smiapp_register_subdevs(struct smiapp_sensor *sensor)
MEDIA_LNK_FL_IMMUTABLE);
if (rval) {
dev_err(&client->dev,
- "media_entity_create_link failed\n");
+ "media_create_pad_link failed\n");
return rval;
}
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index c8bbf122f4a6..bdeb6e804c7e 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -481,7 +481,7 @@ static struct media_link *media_entity_add_link(struct media_entity *entity)
}
int
-media_entity_create_link(struct media_entity *source, u16 source_pad,
+media_create_pad_link(struct media_entity *source, u16 source_pad,
struct media_entity *sink, u16 sink_pad, u32 flags)
{
struct media_link *link;
@@ -519,7 +519,7 @@ media_entity_create_link(struct media_entity *source, u16 source_pad,
return 0;
}
-EXPORT_SYMBOL_GPL(media_entity_create_link);
+EXPORT_SYMBOL_GPL(media_create_pad_link);
static void __media_entity_remove_link(struct media_entity *entity,
struct media_link *link)
diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index f924148767ba..1be705fd3551 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -729,7 +729,7 @@ static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd,
flags = ((1 << i) & link_mask) ? MEDIA_LNK_FL_ENABLED : 0;
sink = &fmd->fimc[i]->vid_cap.subdev.entity;
- ret = media_entity_create_link(source, pad, sink,
+ ret = media_create_pad_link(source, pad, sink,
FIMC_SD_PAD_SINK_CAM, flags);
if (ret)
return ret;
@@ -749,7 +749,7 @@ static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd,
continue;
sink = &fmd->fimc_lite[i]->subdev.entity;
- ret = media_entity_create_link(source, pad, sink,
+ ret = media_create_pad_link(source, pad, sink,
FLITE_SD_PAD_SINK, 0);
if (ret)
return ret;
@@ -781,13 +781,13 @@ static int __fimc_md_create_flite_source_links(struct fimc_md *fmd)
source = &fimc->subdev.entity;
sink = &fimc->ve.vdev.entity;
/* FIMC-LITE's subdev and video node */
- ret = media_entity_create_link(source, FLITE_SD_PAD_SOURCE_DMA,
+ ret = media_create_pad_link(source, FLITE_SD_PAD_SOURCE_DMA,
sink, 0, 0);
if (ret)
break;
/* Link from FIMC-LITE to IS-ISP subdev */
sink = &fmd->fimc_is->isp.subdev.entity;
- ret = media_entity_create_link(source, FLITE_SD_PAD_SOURCE_ISP,
+ ret = media_create_pad_link(source, FLITE_SD_PAD_SOURCE_ISP,
sink, 0, 0);
if (ret)
break;
@@ -811,7 +811,7 @@ static int __fimc_md_create_fimc_is_links(struct fimc_md *fmd)
/* Link from FIMC-IS-ISP subdev to FIMC */
sink = &fmd->fimc[i]->vid_cap.subdev.entity;
- ret = media_entity_create_link(source, FIMC_ISP_SD_PAD_SRC_FIFO,
+ ret = media_create_pad_link(source, FIMC_ISP_SD_PAD_SRC_FIFO,
sink, FIMC_SD_PAD_SINK_FIFO, 0);
if (ret)
return ret;
@@ -824,7 +824,7 @@ static int __fimc_md_create_fimc_is_links(struct fimc_md *fmd)
if (sink->num_pads == 0)
return 0;
- return media_entity_create_link(source, FIMC_ISP_SD_PAD_SRC_DMA,
+ return media_create_pad_link(source, FIMC_ISP_SD_PAD_SRC_DMA,
sink, 0, 0);
}
@@ -873,7 +873,7 @@ static int fimc_md_create_links(struct fimc_md *fmd)
return -EINVAL;
pad = sensor->entity.num_pads - 1;
- ret = media_entity_create_link(&sensor->entity, pad,
+ ret = media_create_pad_link(&sensor->entity, pad,
&csis->entity, CSIS_PAD_SINK,
MEDIA_LNK_FL_IMMUTABLE |
MEDIA_LNK_FL_ENABLED);
@@ -927,7 +927,7 @@ static int fimc_md_create_links(struct fimc_md *fmd)
source = &fmd->fimc[i]->vid_cap.subdev.entity;
sink = &fmd->fimc[i]->vid_cap.ve.vdev.entity;
- ret = media_entity_create_link(source, FIMC_SD_PAD_SOURCE,
+ ret = media_create_pad_link(source, FIMC_SD_PAD_SOURCE,
sink, 0, flags);
if (ret)
break;
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 7e2f4c9c0eef..b9e2a3b410dc 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -1905,7 +1905,7 @@ static int isp_link_entity(
return -EINVAL;
}
- return media_entity_create_link(entity, i, input, pad, flags);
+ return media_create_pad_link(entity, i, input, pad, flags);
}
static int isp_register_entities(struct isp_device *isp)
@@ -2077,51 +2077,51 @@ static int isp_initialize_modules(struct isp_device *isp)
}
/* Connect the submodules. */
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE,
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&isp->isp_ccp2.subdev.entity, CCP2_PAD_SOURCE,
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_prev.subdev.entity, PREV_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_OF,
&isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&isp->isp_prev.subdev.entity, PREV_PAD_SOURCE,
&isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_aewb.subdev.entity, 0,
MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_af.subdev.entity, 0,
MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_hist.subdev.entity, 0,
MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c
index f01b540d1841..cb694c095be1 100644
--- a/drivers/media/platform/omap3isp/ispccdc.c
+++ b/drivers/media/platform/omap3isp/ispccdc.c
@@ -2667,7 +2667,7 @@ static int ccdc_init_entities(struct isp_ccdc_device *ccdc)
goto error_video;
/* Connect the CCDC subdev to the video node. */
- ret = media_entity_create_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF,
+ ret = media_create_pad_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF,
&ccdc->video_out.video.entity, 0, 0);
if (ret < 0)
goto error_link;
diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c
index e1b5f5bea541..b215eb5049d6 100644
--- a/drivers/media/platform/omap3isp/ispccp2.c
+++ b/drivers/media/platform/omap3isp/ispccp2.c
@@ -1100,7 +1100,7 @@ static int ccp2_init_entities(struct isp_ccp2_device *ccp2)
goto error_video;
/* Connect the video node to the ccp2 subdev. */
- ret = media_entity_create_link(&ccp2->video_in.video.entity, 0,
+ ret = media_create_pad_link(&ccp2->video_in.video.entity, 0,
&ccp2->subdev.entity, CCP2_PAD_SINK, 0);
if (ret < 0)
goto error_link;
diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c
index 6fff92f0813a..fcefc1e74881 100644
--- a/drivers/media/platform/omap3isp/ispcsi2.c
+++ b/drivers/media/platform/omap3isp/ispcsi2.c
@@ -1265,7 +1265,7 @@ static int csi2_init_entities(struct isp_csi2_device *csi2)
goto error_video;
/* Connect the CSI2 subdev to the video node. */
- ret = media_entity_create_link(&csi2->subdev.entity, CSI2_PAD_SOURCE,
+ ret = media_create_pad_link(&csi2->subdev.entity, CSI2_PAD_SOURCE,
&csi2->video_out.video.entity, 0, 0);
if (ret < 0)
goto error_link;
diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c
index b440c6342ca4..ad38d20c7770 100644
--- a/drivers/media/platform/omap3isp/isppreview.c
+++ b/drivers/media/platform/omap3isp/isppreview.c
@@ -2312,12 +2312,12 @@ static int preview_init_entities(struct isp_prev_device *prev)
goto error_video_out;
/* Connect the video nodes to the previewer subdev. */
- ret = media_entity_create_link(&prev->video_in.video.entity, 0,
+ ret = media_create_pad_link(&prev->video_in.video.entity, 0,
&prev->subdev.entity, PREV_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(&prev->subdev.entity, PREV_PAD_SOURCE,
+ ret = media_create_pad_link(&prev->subdev.entity, PREV_PAD_SOURCE,
&prev->video_out.video.entity, 0, 0);
if (ret < 0)
goto error_link;
diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c
index 3deb1ec4a973..b48ad4d4b834 100644
--- a/drivers/media/platform/omap3isp/ispresizer.c
+++ b/drivers/media/platform/omap3isp/ispresizer.c
@@ -1756,12 +1756,12 @@ static int resizer_init_entities(struct isp_res_device *res)
res->video_out.video.entity.flags |= MEDIA_ENT_FL_DEFAULT;
/* Connect the video nodes to the resizer subdev. */
- ret = media_entity_create_link(&res->video_in.video.entity, 0,
+ ret = media_create_pad_link(&res->video_in.video.entity, 0,
&res->subdev.entity, RESZ_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(&res->subdev.entity, RESZ_PAD_SOURCE,
+ ret = media_create_pad_link(&res->subdev.entity, RESZ_PAD_SOURCE,
&res->video_out.video.entity, 0, 0);
if (ret < 0)
goto error_link;
diff --git a/drivers/media/platform/s3c-camif/camif-core.c b/drivers/media/platform/s3c-camif/camif-core.c
index f47b332f0418..3e33c60be004 100644
--- a/drivers/media/platform/s3c-camif/camif-core.c
+++ b/drivers/media/platform/s3c-camif/camif-core.c
@@ -263,7 +263,7 @@ static int camif_create_media_links(struct camif_dev *camif)
{
int i, ret;
- ret = media_entity_create_link(&camif->sensor.sd->entity, 0,
+ ret = media_create_pad_link(&camif->sensor.sd->entity, 0,
&camif->subdev.entity, CAMIF_SD_PAD_SINK,
MEDIA_LNK_FL_IMMUTABLE |
MEDIA_LNK_FL_ENABLED);
@@ -271,7 +271,7 @@ static int camif_create_media_links(struct camif_dev *camif)
return ret;
for (i = 1; i < CAMIF_SD_PADS_NUM && !ret; i++) {
- ret = media_entity_create_link(&camif->subdev.entity, i,
+ ret = media_create_pad_link(&camif->subdev.entity, i,
&camif->vp[i - 1].vdev.entity, 0,
MEDIA_LNK_FL_IMMUTABLE |
MEDIA_LNK_FL_ENABLED);
diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c
index 4e61886384e3..9cd94a76a9ed 100644
--- a/drivers/media/platform/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/vsp1/vsp1_drv.c
@@ -101,7 +101,7 @@ static int vsp1_create_links(struct vsp1_device *vsp1, struct vsp1_entity *sink)
if (!(entity->pads[pad].flags & MEDIA_PAD_FL_SINK))
continue;
- ret = media_entity_create_link(&source->subdev.entity,
+ ret = media_create_pad_link(&source->subdev.entity,
source->source_pad,
entity, pad, flags);
if (ret < 0)
@@ -262,7 +262,7 @@ static int vsp1_create_entities(struct vsp1_device *vsp1)
}
if (vsp1->pdata.features & VSP1_HAS_LIF) {
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&vsp1->wpf[0]->entity.subdev.entity, RWPF_PAD_SOURCE,
&vsp1->lif->entity.subdev.entity, LIF_PAD_SINK, 0);
if (ret < 0)
diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c
index 3294529a3108..b60a528a8fe8 100644
--- a/drivers/media/platform/vsp1/vsp1_rpf.c
+++ b/drivers/media/platform/vsp1/vsp1_rpf.c
@@ -278,7 +278,7 @@ struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index)
rpf->entity.video = video;
/* Connect the video device to the RPF. */
- ret = media_entity_create_link(&rpf->video.video.entity, 0,
+ ret = media_create_pad_link(&rpf->video.video.entity, 0,
&rpf->entity.subdev.entity,
RWPF_PAD_SINK,
MEDIA_LNK_FL_ENABLED |
diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c
index 1d2b3a2f1573..d39aa4b8aea1 100644
--- a/drivers/media/platform/vsp1/vsp1_wpf.c
+++ b/drivers/media/platform/vsp1/vsp1_wpf.c
@@ -284,7 +284,7 @@ struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
if (!(vsp1->pdata.features & VSP1_HAS_LIF) || index != 0)
flags |= MEDIA_LNK_FL_IMMUTABLE;
- ret = media_entity_create_link(&wpf->entity.subdev.entity,
+ ret = media_create_pad_link(&wpf->entity.subdev.entity,
RWPF_PAD_SOURCE,
&wpf->video.video.entity, 0, flags);
if (ret < 0)
diff --git a/drivers/media/platform/xilinx/xilinx-vipp.c b/drivers/media/platform/xilinx/xilinx-vipp.c
index 7b7cb9c28d2c..79d4be7ce9a5 100644
--- a/drivers/media/platform/xilinx/xilinx-vipp.c
+++ b/drivers/media/platform/xilinx/xilinx-vipp.c
@@ -156,7 +156,7 @@ static int xvip_graph_build_one(struct xvip_composite_device *xdev,
local->name, local_pad->index,
remote->name, remote_pad->index);
- ret = media_entity_create_link(local, local_pad->index,
+ ret = media_create_pad_link(local, local_pad->index,
remote, remote_pad->index,
link_flags);
if (ret < 0) {
@@ -270,7 +270,7 @@ static int xvip_graph_build_dma(struct xvip_composite_device *xdev)
source->name, source_pad->index,
sink->name, sink_pad->index);
- ret = media_entity_create_link(source, source_pad->index,
+ ret = media_create_pad_link(source, source_pad->index,
sink, sink_pad->index,
link_flags);
if (ret < 0) {
diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c
index 4a117a58c39a..3b5c9ae39ad3 100644
--- a/drivers/media/usb/cx231xx/cx231xx-cards.c
+++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
@@ -1264,11 +1264,11 @@ static void cx231xx_create_media_graph(struct cx231xx *dev)
return;
if (tuner)
- media_entity_create_link(tuner, 0, decoder, 0,
+ media_create_pad_link(tuner, 0, decoder, 0,
MEDIA_LNK_FL_ENABLED);
- media_entity_create_link(decoder, 1, &dev->vdev.entity, 0,
+ media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
MEDIA_LNK_FL_ENABLED);
- media_entity_create_link(decoder, 2, &dev->vbi_dev.entity, 0,
+ media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0,
MEDIA_LNK_FL_ENABLED);
#endif
}
diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c
index 245445491516..429e428ccd93 100644
--- a/drivers/media/usb/uvc/uvc_entity.c
+++ b/drivers/media/usb/uvc/uvc_entity.c
@@ -56,7 +56,7 @@ static int uvc_mc_register_entity(struct uvc_video_chain *chain,
continue;
remote_pad = remote->num_pads - 1;
- ret = media_entity_create_link(source, remote_pad,
+ ret = media_create_pad_link(source, remote_pad,
sink, i, flags);
if (ret < 0)
return ret;
diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c
index 8fb676186898..d96bdaaae50e 100644
--- a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c
+++ b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c
@@ -971,7 +971,7 @@ vpfe_ipipeif_register_entities(struct vpfe_ipipeif_device *ipipeif,
ipipeif->video_in.vpfe_dev = vpfe_dev;
flags = 0;
- ret = media_entity_create_link(&ipipeif->video_in.video_dev.entity, 0,
+ ret = media_create_pad_link(&ipipeif->video_in.video_dev.entity, 0,
&ipipeif->subdev.entity, 0, flags);
if (ret < 0)
goto fail;
diff --git a/drivers/staging/media/davinci_vpfe/dm365_isif.c b/drivers/staging/media/davinci_vpfe/dm365_isif.c
index b1f01adfa7c8..df77288b0ec0 100644
--- a/drivers/staging/media/davinci_vpfe/dm365_isif.c
+++ b/drivers/staging/media/davinci_vpfe/dm365_isif.c
@@ -1817,7 +1817,7 @@ int vpfe_isif_register_entities(struct vpfe_isif_device *isif,
isif->video_out.vpfe_dev = vpfe_dev;
flags = 0;
/* connect isif to video node */
- ret = media_entity_create_link(&isif->subdev.entity, 1,
+ ret = media_create_pad_link(&isif->subdev.entity, 1,
&isif->video_out.video_dev.entity,
0, flags);
if (ret < 0)
diff --git a/drivers/staging/media/davinci_vpfe/dm365_resizer.c b/drivers/staging/media/davinci_vpfe/dm365_resizer.c
index 692789aa22f4..ae942de3a23d 100644
--- a/drivers/staging/media/davinci_vpfe/dm365_resizer.c
+++ b/drivers/staging/media/davinci_vpfe/dm365_resizer.c
@@ -1831,27 +1831,27 @@ int vpfe_resizer_register_entities(struct vpfe_resizer_device *resizer,
resizer->resizer_b.video_out.vpfe_dev = vpfe_dev;
/* create link between Resizer Crop----> Resizer A*/
- ret = media_entity_create_link(&resizer->crop_resizer.subdev.entity, 1,
+ ret = media_create_pad_link(&resizer->crop_resizer.subdev.entity, 1,
&resizer->resizer_a.subdev.entity,
0, flags);
if (ret < 0)
goto out_create_link;
/* create link between Resizer Crop----> Resizer B*/
- ret = media_entity_create_link(&resizer->crop_resizer.subdev.entity, 2,
+ ret = media_create_pad_link(&resizer->crop_resizer.subdev.entity, 2,
&resizer->resizer_b.subdev.entity,
0, flags);
if (ret < 0)
goto out_create_link;
/* create link between Resizer A ----> video out */
- ret = media_entity_create_link(&resizer->resizer_a.subdev.entity, 1,
+ ret = media_create_pad_link(&resizer->resizer_a.subdev.entity, 1,
&resizer->resizer_a.video_out.video_dev.entity, 0, flags);
if (ret < 0)
goto out_create_link;
/* create link between Resizer B ----> video out */
- ret = media_entity_create_link(&resizer->resizer_b.subdev.entity, 1,
+ ret = media_create_pad_link(&resizer->resizer_b.subdev.entity, 1,
&resizer->resizer_b.video_out.video_dev.entity, 0, flags);
if (ret < 0)
goto out_create_link;
diff --git a/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c b/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c
index 57426199ad7a..08c8a5f967d3 100644
--- a/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c
+++ b/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c
@@ -445,32 +445,32 @@ static int vpfe_register_entities(struct vpfe_device *vpfe_dev)
/* if entity has no pads (ex: amplifier),
cant establish link */
if (vpfe_dev->sd[i]->entity.num_pads) {
- ret = media_entity_create_link(&vpfe_dev->sd[i]->entity,
+ ret = media_create_pad_link(&vpfe_dev->sd[i]->entity,
0, &vpfe_dev->vpfe_isif.subdev.entity,
0, flags);
if (ret < 0)
goto out_resizer_register;
}
- ret = media_entity_create_link(&vpfe_dev->vpfe_isif.subdev.entity, 1,
+ ret = media_create_pad_link(&vpfe_dev->vpfe_isif.subdev.entity, 1,
&vpfe_dev->vpfe_ipipeif.subdev.entity,
0, flags);
if (ret < 0)
goto out_resizer_register;
- ret = media_entity_create_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1,
+ ret = media_create_pad_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1,
&vpfe_dev->vpfe_ipipe.subdev.entity,
0, flags);
if (ret < 0)
goto out_resizer_register;
- ret = media_entity_create_link(&vpfe_dev->vpfe_ipipe.subdev.entity,
+ ret = media_create_pad_link(&vpfe_dev->vpfe_ipipe.subdev.entity,
1, &vpfe_dev->vpfe_resizer.crop_resizer.subdev.entity,
0, flags);
if (ret < 0)
goto out_resizer_register;
- ret = media_entity_create_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1,
+ ret = media_create_pad_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1,
&vpfe_dev->vpfe_resizer.crop_resizer.subdev.entity,
0, flags);
if (ret < 0)
diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c
index 5556ffbd7619..617918e35d61 100644
--- a/drivers/staging/media/omap4iss/iss.c
+++ b/drivers/staging/media/omap4iss/iss.c
@@ -1259,7 +1259,7 @@ static int iss_register_entities(struct iss_device *iss)
goto done;
}
- ret = media_entity_create_link(&sensor->entity, 0, input, pad,
+ ret = media_create_pad_link(&sensor->entity, 0, input, pad,
flags);
if (ret < 0)
goto done;
@@ -1317,31 +1317,31 @@ static int iss_initialize_modules(struct iss_device *iss)
}
/* Connect the submodules. */
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&iss->csi2a.subdev.entity, CSI2_PAD_SOURCE,
&iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&iss->csi2b.subdev.entity, CSI2_PAD_SOURCE,
&iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP,
&iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP,
&iss->ipipe.subdev.entity, IPIPE_PAD_SINK, 0);
if (ret < 0)
goto error_link;
- ret = media_entity_create_link(
+ ret = media_create_pad_link(
&iss->ipipe.subdev.entity, IPIPE_PAD_SOURCE_VP,
&iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0);
if (ret < 0)
diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c
index 47df6be236bc..bcdaec07a43a 100644
--- a/drivers/staging/media/omap4iss/iss_csi2.c
+++ b/drivers/staging/media/omap4iss/iss_csi2.c
@@ -1291,7 +1291,7 @@ static int csi2_init_entities(struct iss_csi2_device *csi2, const char *subname)
goto error_video;
/* Connect the CSI2 subdev to the video node. */
- ret = media_entity_create_link(&csi2->subdev.entity, CSI2_PAD_SOURCE,
+ ret = media_create_pad_link(&csi2->subdev.entity, CSI2_PAD_SOURCE,
&csi2->video_out.video.entity, 0, 0);
if (ret < 0)
goto error_link;
diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c
index be5f80d7b5dc..44c432ef2ac5 100644
--- a/drivers/staging/media/omap4iss/iss_ipipeif.c
+++ b/drivers/staging/media/omap4iss/iss_ipipeif.c
@@ -762,7 +762,7 @@ static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif)
return ret;
/* Connect the IPIPEIF subdev to the video node. */
- ret = media_entity_create_link(&ipipeif->subdev.entity,
+ ret = media_create_pad_link(&ipipeif->subdev.entity,
IPIPEIF_PAD_SOURCE_ISIF_SF,
&ipipeif->video_out.video.entity, 0, 0);
if (ret < 0)
diff --git a/drivers/staging/media/omap4iss/iss_resizer.c b/drivers/staging/media/omap4iss/iss_resizer.c
index 91e724085dba..b659e465cb56 100644
--- a/drivers/staging/media/omap4iss/iss_resizer.c
+++ b/drivers/staging/media/omap4iss/iss_resizer.c
@@ -806,7 +806,7 @@ static int resizer_init_entities(struct iss_resizer_device *resizer)
return ret;
/* Connect the RESIZER subdev to the video node. */
- ret = media_entity_create_link(&resizer->subdev.entity,
+ ret = media_create_pad_link(&resizer->subdev.entity,
RESIZER_PAD_SOURCE_MEM,
&resizer->video_out.video.entity, 0, 0);
if (ret < 0)
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index f6e2136480f1..75fe769e4d85 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -202,7 +202,7 @@ int media_entity_init(struct media_entity *entity, u16 num_pads,
struct media_pad *pads);
void media_entity_cleanup(struct media_entity *entity);
-int media_entity_create_link(struct media_entity *source, u16 source_pad,
+int media_create_pad_link(struct media_entity *source, u16 source_pad,
struct media_entity *sink, u16 sink_pad, u32 flags);
void __media_entity_remove_links(struct media_entity *entity);
void media_entity_remove_links(struct media_entity *entity);
--
2.4.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints
2015-08-11 12:09 ` [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints Mauro Carvalho Chehab
2015-08-11 12:09 ` [PATCH RFC v2 10/16] media: rename the function that create pad links Mauro Carvalho Chehab
@ 2015-08-11 12:25 ` Hans Verkuil
2015-08-11 13:22 ` Mauro Carvalho Chehab
1 sibling, 1 reply; 6+ messages in thread
From: Hans Verkuil @ 2015-08-11 12:25 UTC (permalink / raw)
To: linux-arm-kernel
Hi Mauro,
Thanks for posting the missing patches.
On 08/11/15 14:09, Mauro Carvalho Chehab wrote:
> As we'll need to create links between entities and interfaces,
> we need to identify the link endpoints by the media_graph_obj.
>
> Most of the changes here was done by this small script:
>
> for i in `find drivers/media -type f` `find drivers/staging/media -type f`; do
> perl -ne 's,([\w]+)\-\>(source|sink)\-\>entity,gobj_to_pad($1->$2)->entity,; print $_;' <$i >a && mv a $i
> done
>
> Please note that, while we're now using graph_obj to reference
> the link endpoints, we're still assuming that all endpoints are
> pads. This is true for all existing links, so no problems
> are expected so far.
>
> Yet, as we introduce links between entities and interfaces,
> we may need to change some existing code to work with links
> that aren't pad to pad.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
>
<snip>
> diff --git a/include/media/media-entity.h b/include/media/media-entity.h
> index 403019035424..f6e2136480f1 100644
> --- a/include/media/media-entity.h
> +++ b/include/media/media-entity.h
> @@ -43,6 +43,17 @@ enum media_graph_type {
> MEDIA_GRAPH_LINK,
> };
>
> +/**
> + * enum media_graph_link_dir - direction of a link
> + *
> + * @MEDIA_LINK_DIR_BIDIRECTIONAL Link is bidirectional
> + * @MEDIA_LINK_DIR_PAD_0_TO_1 Link is unidirectional,
> + * from port 0 (source) to port 1 (sink)
> + */
> +enum media_graph_link_dir {
> + MEDIA_LINK_DIR_BIDIRECTIONAL,
> + MEDIA_LINK_DIR_PORT0_TO_PORT1,
> +};
1) the comment and the actual enum are out-of-sync
2) why not just make a 'BIRECTIONAL' link flag instead of inventing
a new enum? Adding yet another field seems overkill to me. Have a
'BIDIRECTIONAL' flag seems perfectly OK to me (and useful for the
application as well).
>
> /* Structs to represent the objects that belong to a media graph */
>
> @@ -72,9 +83,9 @@ struct media_pipeline {
>
> struct media_link {
> struct list_head list;
> - struct media_graph_obj graph_obj;
> - struct media_pad *source; /* Source pad */
> - struct media_pad *sink; /* Sink pad */
> + struct media_graph_obj graph_obj;
> + enum media_graph_link_dir dir;
> + struct media_graph_obj *source, *sink;
I'm not too keen about all the gobj_to_foo(obj) macros that this requires. It
is rather ugly code.
What about this:
union {
struct media_graph_obj *source;
struct media_pad *source_pad;
struct media_interface *source_intf;
};
union {
struct media_graph_obj *sink;
struct media_pad *sink_pad;
struct media_entity *sink_ent;
};
Now the code can just use ->source_pad etc.
> struct media_link *reverse; /* Link in the reverse direction */
> unsigned long flags; /* Link flags (MEDIA_LNK_FL_*) */
> };
> @@ -115,6 +126,11 @@ struct media_entity {
> u32 group_id; /* Entity group ID */
>
> u16 num_pads; /* Number of sink and source pads */
> +
> + /*
> + * Both num_links and num_backlinks are used only to report
> + * the number of links via MEDIA_IOC_ENUM_ENTITIES at media_device.c
> + */
> u16 num_links; /* Number of existing links, both
> * enabled and disabled */
> u16 num_backlinks; /* Number of backlinks */
> @@ -171,6 +187,12 @@ struct media_entity_graph {
> #define gobj_to_entity(gobj) \
> container_of(gobj, struct media_entity, graph_obj)
>
> +#define gobj_to_link(gobj) \
> + container_of(gobj, struct media_link, graph_obj)
> +
> +#define gobj_to_pad(gobj) \
> + container_of(gobj, struct media_pad, graph_obj)
> +
I saw a lot of type checks (if (link->sink.type != MEDIA_GRAPH_PAD))
that I think would look cleaner if there was a simple static inline
helper:
static inline bool is_pad(const struct media_graph_obj *obj)
{
return obj->type == MEDIA_GRAPH_PAD;
}
media_is_pad() will work as well, but I think brevity is more useful
in this case. Personal opinion, though.
> void graph_obj_init(struct media_device *mdev,
> enum media_graph_type type,
> struct media_graph_obj *gobj);
>
Regards,
Hans
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints
2015-08-11 12:25 ` [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints Hans Verkuil
@ 2015-08-11 13:22 ` Mauro Carvalho Chehab
2015-08-11 13:32 ` Hans Verkuil
0 siblings, 1 reply; 6+ messages in thread
From: Mauro Carvalho Chehab @ 2015-08-11 13:22 UTC (permalink / raw)
To: linux-arm-kernel
Em Tue, 11 Aug 2015 14:25:18 +0200
Hans Verkuil <hansverk@cisco.com> escreveu:
> Hi Mauro,
>
> Thanks for posting the missing patches.
Thanks for reviewing this patch series!
>
> On 08/11/15 14:09, Mauro Carvalho Chehab wrote:
> > As we'll need to create links between entities and interfaces,
> > we need to identify the link endpoints by the media_graph_obj.
> >
> > Most of the changes here was done by this small script:
> >
> > for i in `find drivers/media -type f` `find drivers/staging/media -type f`; do
> > perl -ne 's,([\w]+)\-\>(source|sink)\-\>entity,gobj_to_pad($1->$2)->entity,; print $_;' <$i >a && mv a $i
> > done
> >
> > Please note that, while we're now using graph_obj to reference
> > the link endpoints, we're still assuming that all endpoints are
> > pads. This is true for all existing links, so no problems
> > are expected so far.
> >
> > Yet, as we introduce links between entities and interfaces,
> > we may need to change some existing code to work with links
> > that aren't pad to pad.
> >
> > Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
> >
>
> <snip>
>
> > diff --git a/include/media/media-entity.h b/include/media/media-entity.h
> > index 403019035424..f6e2136480f1 100644
> > --- a/include/media/media-entity.h
> > +++ b/include/media/media-entity.h
> > @@ -43,6 +43,17 @@ enum media_graph_type {
> > MEDIA_GRAPH_LINK,
> > };
> >
> > +/**
> > + * enum media_graph_link_dir - direction of a link
> > + *
> > + * @MEDIA_LINK_DIR_BIDIRECTIONAL Link is bidirectional
> > + * @MEDIA_LINK_DIR_PAD_0_TO_1 Link is unidirectional,
> > + * from port 0 (source) to port 1 (sink)
> > + */
> > +enum media_graph_link_dir {
> > + MEDIA_LINK_DIR_BIDIRECTIONAL,
> > + MEDIA_LINK_DIR_PORT0_TO_PORT1,
> > +};
>
> 1) the comment and the actual enum are out-of-sync
Ah, yes. I was in doubt about using PAD or PORT here. I ended by using
port at the links, as the endpoints can either be an interface/entity
or a pad. So, I decided to use port.
> 2) why not just make a 'BIRECTIONAL' link flag instead of inventing
> a new enum? Adding yet another field seems overkill to me. Have a
> 'BIDIRECTIONAL' flag seems perfectly OK to me (and useful for the
> application as well).
Yeah, we can use flags, instead. I decided to use an enum here just
to make it clearer about the two possible options.
I was actually considering to rename media_link source/sink to
port0/port1, as using "source"/"sink" names on a bidirection link
doesn't make sense. I'm still in doubt about such rename, though,
as it would make harder to inspect the graph traversal routines.
Also, I want to force all places that create a link to choose
between either BIRECTIONAL or PORT0_TO_PORT1, as this makes easier
to review if the code is doing the right thing when inspecting it.
In summary, I would prefer to keep this internally as a separate
enum, at least for now. We can latter simplify it and use a flag
for that (or maybe two flags?).
>
> >
> > /* Structs to represent the objects that belong to a media graph */
> >
> > @@ -72,9 +83,9 @@ struct media_pipeline {
> >
> > struct media_link {
> > struct list_head list;
> > - struct media_graph_obj graph_obj;
> > - struct media_pad *source; /* Source pad */
> > - struct media_pad *sink; /* Sink pad */
> > + struct media_graph_obj graph_obj;
> > + enum media_graph_link_dir dir;
> > + struct media_graph_obj *source, *sink;
>
> I'm not too keen about all the gobj_to_foo(obj) macros that this requires. It
> is rather ugly code.
>
> What about this:
>
> union {
> struct media_graph_obj *source;
> struct media_pad *source_pad;
> struct media_interface *source_intf;
> };
> union {
> struct media_graph_obj *sink;
> struct media_pad *sink_pad;
> struct media_entity *sink_ent;
> };
>
> Now the code can just use ->source_pad etc.
good idea. Will do that on a version 3. I think that, in this case, the
best is to write a note that the first element at pad/entity/interface
should be the graph_obj.
I would actually call port0_intf and port1_ent on the above structs,
as it makes no sense to call sink/source for interface->entity links.
> > struct media_link *reverse; /* Link in the reverse direction */
> > unsigned long flags; /* Link flags (MEDIA_LNK_FL_*) */
> > };
> > @@ -115,6 +126,11 @@ struct media_entity {
> > u32 group_id; /* Entity group ID */
> >
> > u16 num_pads; /* Number of sink and source pads */
> > +
> > + /*
> > + * Both num_links and num_backlinks are used only to report
> > + * the number of links via MEDIA_IOC_ENUM_ENTITIES at media_device.c
> > + */
> > u16 num_links; /* Number of existing links, both
> > * enabled and disabled */
> > u16 num_backlinks; /* Number of backlinks */
> > @@ -171,6 +187,12 @@ struct media_entity_graph {
> > #define gobj_to_entity(gobj) \
> > container_of(gobj, struct media_entity, graph_obj)
> >
> > +#define gobj_to_link(gobj) \
> > + container_of(gobj, struct media_link, graph_obj)
> > +
> > +#define gobj_to_pad(gobj) \
> > + container_of(gobj, struct media_pad, graph_obj)
> > +
>
> I saw a lot of type checks (if (link->sink.type != MEDIA_GRAPH_PAD))
> that I think would look cleaner if there was a simple static inline
> helper:
>
> static inline bool is_pad(const struct media_graph_obj *obj)
> {
> return obj->type == MEDIA_GRAPH_PAD;
> }
>
> media_is_pad() will work as well, but I think brevity is more useful
> in this case. Personal opinion, though.
I would use media_is_pad() instead, to avoid namespace conflicts. We may
eventually need other inline functions for other types in the future.
>
> > void graph_obj_init(struct media_device *mdev,
> > enum media_graph_type type,
> > struct media_graph_obj *gobj);
> >
>
> Regards,
>
> Hans
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints
2015-08-11 13:22 ` Mauro Carvalho Chehab
@ 2015-08-11 13:32 ` Hans Verkuil
0 siblings, 0 replies; 6+ messages in thread
From: Hans Verkuil @ 2015-08-11 13:32 UTC (permalink / raw)
To: linux-arm-kernel
>>> diff --git a/include/media/media-entity.h b/include/media/media-entity.h
>>> index 403019035424..f6e2136480f1 100644
>>> --- a/include/media/media-entity.h
>>> +++ b/include/media/media-entity.h
>>> @@ -43,6 +43,17 @@ enum media_graph_type {
>>> MEDIA_GRAPH_LINK,
>>> };
>>>
>>> +/**
>>> + * enum media_graph_link_dir - direction of a link
>>> + *
>>> + * @MEDIA_LINK_DIR_BIDIRECTIONAL Link is bidirectional
>>> + * @MEDIA_LINK_DIR_PAD_0_TO_1 Link is unidirectional,
>>> + * from port 0 (source) to port 1 (sink)
>>> + */
>>> +enum media_graph_link_dir {
>>> + MEDIA_LINK_DIR_BIDIRECTIONAL,
>>> + MEDIA_LINK_DIR_PORT0_TO_PORT1,
>>> +};
>>
>> 1) the comment and the actual enum are out-of-sync
>
> Ah, yes. I was in doubt about using PAD or PORT here. I ended by using
> port at the links, as the endpoints can either be an interface/entity
> or a pad. So, I decided to use port.
It's either bi-directional (between interface and entity) or directional
(between two pads), so I think PAD is better here. We don't use the term
port anywhere else in the MC, so I think it is a bit confusing to
introduce a new name here.
>
>> 2) why not just make a 'BIRECTIONAL' link flag instead of inventing
>> a new enum? Adding yet another field seems overkill to me. Have a
>> 'BIDIRECTIONAL' flag seems perfectly OK to me (and useful for the
>> application as well).
>
> Yeah, we can use flags, instead. I decided to use an enum here just
> to make it clearer about the two possible options.
>
> I was actually considering to rename media_link source/sink to
> port0/port1, as using "source"/"sink" names on a bidirection link
> doesn't make sense. I'm still in doubt about such rename, though,
> as it would make harder to inspect the graph traversal routines.
Right. I really wouldn't rename it. As suggested below using an
anonymous union would allow you to create proper names.
> Also, I want to force all places that create a link to choose
> between either BIRECTIONAL or PORT0_TO_PORT1, as this makes easier
> to review if the code is doing the right thing when inspecting it.
By creating two different functions? I think that would be very useful.
E.g. make_pad_link() and make_intf_to_ent_link() or something like
that. That would also hide the link direction. I still prefer a flag,
though :-) That's mostly personal preference, though.
>
> In summary, I would prefer to keep this internally as a separate
> enum, at least for now. We can latter simplify it and use a flag
> for that (or maybe two flags?).
>
>>
>>>
>>> /* Structs to represent the objects that belong to a media graph */
>>>
>>> @@ -72,9 +83,9 @@ struct media_pipeline {
>>>
>>> struct media_link {
>>> struct list_head list;
>>> - struct media_graph_obj graph_obj;
>>> - struct media_pad *source; /* Source pad */
>>> - struct media_pad *sink; /* Sink pad */
>>> + struct media_graph_obj graph_obj;
>>> + enum media_graph_link_dir dir;
>>> + struct media_graph_obj *source, *sink;
>>
>> I'm not too keen about all the gobj_to_foo(obj) macros that this requires. It
>> is rather ugly code.
>>
>> What about this:
>>
>> union {
>> struct media_graph_obj *source;
>> struct media_pad *source_pad;
>> struct media_interface *source_intf;
>> };
>> union {
>> struct media_graph_obj *sink;
>> struct media_pad *sink_pad;
>> struct media_entity *sink_ent;
>> };
>>
>> Now the code can just use ->source_pad etc.
>
> good idea. Will do that on a version 3. I think that, in this case, the
> best is to write a note that the first element at pad/entity/interface
> should be the graph_obj.
>
> I would actually call port0_intf and port1_ent on the above structs,
> as it makes no sense to call sink/source for interface->entity links.
How about this:
union {
struct media_graph_obj *port0;
struct media_interface *port0_intf; // perhaps just intf or interface?
struct media_pad *source;
};
union {
struct media_graph_obj *port1;
struct media_entity *port1_ent; // perhaps just ent or entity?
struct media_pad *sink;
};
This has the advantage that the source/sink pads are still called source and
sink and you don't have to rename the existing code.
Regards,
Hans
^ permalink raw reply [flat|nested] 6+ messages in thread
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2015-08-07 14:20 ` [PATCH RFC v2 07/16] media: get rid of unused "extra_links" param on media_entity_init() Mauro Carvalho Chehab
2015-08-11 12:09 ` [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints Mauro Carvalho Chehab
2015-08-11 12:09 ` [PATCH RFC v2 10/16] media: rename the function that create pad links Mauro Carvalho Chehab
2015-08-11 12:25 ` [PATCH RFC v2 09/16] media: use media_graph_obj for link endpoints Hans Verkuil
2015-08-11 13:22 ` Mauro Carvalho Chehab
2015-08-11 13:32 ` Hans Verkuil
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