Re: [PATCH 15/18] [media] uapi/media.h: Rename entities types to functions

[Mauro Carvalho Chehab <mchehab@osg.samsung.com>]

Em Fri, 11 Sep 2015 17:36:42 +0200
Hans Verkuil <hverkuil@xs4all.nl> escreveu:

> On 09/06/2015 07:30 PM, Mauro Carvalho Chehab wrote:
> > Rename the userspace types from MEDIA_ENT_T_ to MEDIA_ENT_F_
> > and add the backward compatibility bits.
> > 
> > The changes at the .c files was generated by the following
> > coccinelle script:
> > 
> 
> 
> > @@
> > -MEDIA_ENT_T_DVB_DEMUX
> > +MEDIA_ENT_F_MPEG_TS_DEMUX
> 
> I'm not sure about the 'MPEG_' part here. I think that in general a transport stream
> can contain non-MPEG streams as well. Why not just say _F_TS_DEMUX?

Changed.

> 
> > @@
> > @@
> > -MEDIA_ENT_T_DVB_TSOUT
> > +MEDIA_ENT_F_DTV_TSOUT
> 
> Shouldn't this be MEDIA_ENT_F_IO?

As we've discussed on IRC, per Shuah's request, I ended by keeping
one different I/O entity per API type:

#define MEDIA_ENT_F_IO_DTV  		(MEDIA_ENT_F_BASE + 31)
#define MEDIA_ENT_F_IO_VBI  		(MEDIA_ENT_F_BASE + 32)
#define MEDIA_ENT_F_IO_SWRADIO		(MEDIA_ENT_F_BASE + 33)
#define MEDIA_ENT_F_IO_V4L  		(MEDIA_ENT_F_OLD_BASE + 1)

> 
> > @@
> > @@
> > -MEDIA_ENT_T_DVB_CA
> > +MEDIA_ENT_F_DTV_CA
> > @@
> > @@
> > -MEDIA_ENT_T_DVB_NET_DECAP
> > +MEDIA_ENT_F_DTV_NET_DECAP
> > 
> > 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 e925909bc99e..8527fc40e6a0 100644
> > --- a/drivers/media/dvb-core/dvbdev.c
> > +++ b/drivers/media/dvb-core/dvbdev.c
> > @@ -229,7 +229,7 @@ static int dvb_create_tsout_entity(struct dvb_device *dvbdev,
> >  		if (!entity->name)
> >  			return ret;
> >  
> > -		entity->function = MEDIA_ENT_T_DVB_TSOUT;
> > +		entity->function = MEDIA_ENT_F_IO;
> >  		pads->flags = MEDIA_PAD_FL_SINK;
> >  
> >  		ret = media_entity_init(entity, 1, pads);
> > diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
> > index d232cc680c67..90e90a6e62bf 100644
> > --- a/include/uapi/linux/media.h
> > +++ b/include/uapi/linux/media.h
> > @@ -46,87 +46,86 @@ struct media_device_info {
> >   * Initial value to be used when a new entity is created
> >   * Drivers should change it to something useful
> >   */
> > -#define MEDIA_ENT_T_UNKNOWN	0x00000000
> > +#define MEDIA_ENT_F_UNKNOWN	0x00000000
> >  
> >  /*
> > - * Base numbers for entity types
> > + * Base number ranges for entity functions
> >   *
> > - * Please notice that the huge gap of 16 bits for each base is overkill!
> > - * 8 bits is more than enough to avoid starving entity types for each
> > - * subsystem.
> > - *
> > - * However, It is kept this way just to avoid binary breakages with the
> > - * namespace provided on legacy versions of this header.
> > + * NOTE: those ranges and entity function number are spased just to
> 
> s/spased/phased/
> 
> > + * make easier to maintain this file. Userspace should not rely on
> 
> s/make/make it/
> 
> > + * the ranges to identify a group of function types, as newer
> > + * functions can be added with any name within the full u32 range.
> >   */
> > -#define MEDIA_ENT_T_DVB_BASE		0x00000000
> > -#define MEDIA_ENT_T_V4L2_BASE		0x00010000
> > -#define MEDIA_ENT_T_V4L2_SUBDEV_BASE	0x00020000
> > -#define MEDIA_ENT_T_CONNECTOR_BASE	0x00030000
> > +#define MEDIA_ENT_F_BASE		0x00000000
> > +#define MEDIA_ENT_F_OLD_BASE		0x00010000
> > +#define MEDIA_ENT_F_OLD_SUBDEV_BASE	0x00020000
> >  
> >  /*
> > - * V4L2 entities - Those are used for DMA (mmap/DMABUF) and
> > - *	read()/write() data I/O associated with the V4L2 devnodes.
> > + * DVB entities
> >   */
> > -#define MEDIA_ENT_T_V4L2_VIDEO		(MEDIA_ENT_T_V4L2_BASE + 1)
> > -	/*
> > -	 * Please notice that numbers between MEDIA_ENT_T_V4L2_BASE + 2 and
> > -	 * MEDIA_ENT_T_V4L2_BASE + 4 can't be used, as those values used
> > -	 * to be declared for FB, ALSA and DVB entities.
> > -	 * As those values were never actually used in practice, we're just
> > -	 * adding them as backward compatibility macros and keeping the
> > -	 * numberspace clean here. This way, we avoid breaking compilation,
> > -	 * in the case of having some userspace application using the old
> > -	 * symbols.
> > -	 */
> > -#define MEDIA_ENT_T_V4L2_VBI		(MEDIA_ENT_T_V4L2_BASE + 5)
> > -#define MEDIA_ENT_T_V4L2_SWRADIO	(MEDIA_ENT_T_V4L2_BASE + 6)
> > -
> > -/* V4L2 Sub-device entities */
> > -
> > -	/*
> > -	 * Subdevs are initialized with MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN,
> > -	 * in order to preserve backward compatibility.
> > -	 * Drivers should change to the proper subdev type before
> > -	 * registering the entity.
> > -	 */
> > -#define MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN	MEDIA_ENT_T_V4L2_SUBDEV_BASE
> > -
> > -#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR	(MEDIA_ENT_T_V4L2_SUBDEV_BASE + 1)
> > -#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH	(MEDIA_ENT_T_V4L2_SUBDEV_BASE + 2)
> > -#define MEDIA_ENT_T_V4L2_SUBDEV_LENS	(MEDIA_ENT_T_V4L2_SUBDEV_BASE + 3)
> > -	/* A converter of analogue video to its digital representation. */
> > -#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER	(MEDIA_ENT_T_V4L2_SUBDEV_BASE + 4)
> > -	/* Tuner entity is actually both V4L2 and DVB subdev */
> > -#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER	(MEDIA_ENT_T_V4L2_SUBDEV_BASE + 5)
> > +#define MEDIA_ENT_F_DTV_DEMOD		(MEDIA_ENT_F_BASE + 1)
> > +#define MEDIA_ENT_F_MPEG_TS_DEMUX	(MEDIA_ENT_F_BASE + 2)
> > +#define MEDIA_ENT_F_DTV_CA		(MEDIA_ENT_F_BASE + 3)
> > +#define MEDIA_ENT_F_DTV_NET_DECAP	(MEDIA_ENT_F_BASE + 4)
> >  
> > -/* DVB entities */
> > -#define MEDIA_ENT_T_DVB_DEMOD		(MEDIA_ENT_T_DVB_BASE + 1)
> > -#define MEDIA_ENT_T_DVB_DEMUX		(MEDIA_ENT_T_DVB_BASE + 2)
> > -#define MEDIA_ENT_T_DVB_TSOUT		(MEDIA_ENT_T_DVB_BASE + 3)
> > -#define MEDIA_ENT_T_DVB_CA		(MEDIA_ENT_T_DVB_BASE + 4)
> > -#define MEDIA_ENT_T_DVB_NET_DECAP	(MEDIA_ENT_T_DVB_BASE + 5)
> > -
> > -/* Connectors */
> > -#define MEDIA_ENT_T_CONN_RF		(MEDIA_ENT_T_CONNECTOR_BASE)
> > -#define MEDIA_ENT_T_CONN_SVIDEO		(MEDIA_ENT_T_CONNECTOR_BASE + 1)
> > -#define MEDIA_ENT_T_CONN_COMPOSITE	(MEDIA_ENT_T_CONNECTOR_BASE + 2)
> > +/*
> > + * Connectors
> > + */
> > +#define MEDIA_ENT_F_CONN_RF		(MEDIA_ENT_F_BASE + 21)
> > +#define MEDIA_ENT_F_CONN_SVIDEO		(MEDIA_ENT_F_BASE + 22)
> > +#define MEDIA_ENT_F_CONN_COMPOSITE	(MEDIA_ENT_F_BASE + 23)
> >  	/* For internal test signal generators and other debug connectors */
> > -#define MEDIA_ENT_T_CONN_TEST		(MEDIA_ENT_T_CONNECTOR_BASE + 3)
> > +#define MEDIA_ENT_F_CONN_TEST		(MEDIA_ENT_F_BASE + 24)
> > +
> > +/*
> > + * Don't touch on those. The ranges MEDIA_ENT_F_OLD_BASE and
> > + * MEDIA_ENT_F_OLD_SUBDEV_BASE are kept to keep backward compatibility
> > + * with the legacy v1 API.The number range is out of range by purpose:
> > + * several previously reserved numbers got excluded from this range.
> > + *
> > + * Subdevs are initialized with MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN,
> > + * in order to preserve backward compatibility.
> > + * Drivers should change to the proper subdev type before
> > + * registering the entity.
> > + */
> > +
> > +#define MEDIA_ENT_F_IO  		(MEDIA_ENT_F_OLD_BASE + 1)
> > +
> > +#define MEDIA_ENT_F_CAM_SENSOR		(MEDIA_ENT_F_OLD_SUBDEV_BASE + 1)
> > +#define MEDIA_ENT_F_FLASH		(MEDIA_ENT_F_OLD_SUBDEV_BASE + 2)
> > +#define MEDIA_ENT_F_LENS		(MEDIA_ENT_F_OLD_SUBDEV_BASE + 3)
> > +#define MEDIA_ENT_F_ATV_DECODER		(MEDIA_ENT_F_OLD_SUBDEV_BASE + 4)
> > +#define MEDIA_ENT_F_TUNER		(MEDIA_ENT_F_OLD_SUBDEV_BASE + 5)
> > +
> > +#define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN	MEDIA_ENT_F_OLD_SUBDEV_BASE
> >  
> >  #ifndef __KERNEL__
> > -/* Legacy symbols used to avoid userspace compilation breakages */
> > +
> > +/*
> > + * Legacy symbols used to avoid userspace compilation breakages
> > + *
> > + * Those symbols map the entity function into types and should be
> > + * used only on legacy programs for legacy hardware. Don't rely
> > + * on those for MEDIA_IOC_G_TOPOLOGY.
> > + */
> >  #define MEDIA_ENT_TYPE_SHIFT		16
> >  #define MEDIA_ENT_TYPE_MASK		0x00ff0000
> >  #define MEDIA_ENT_SUBTYPE_MASK		0x0000ffff
> >  
> > -#define MEDIA_ENT_T_DEVNODE		MEDIA_ENT_T_V4L2_BASE
> > -#define MEDIA_ENT_T_V4L2_SUBDEV		MEDIA_ENT_T_V4L2_SUBDEV_BASE
> > -
> > -#define MEDIA_ENT_T_DEVNODE_V4L		MEDIA_ENT_T_V4L2_VIDEO
> > -
> > +#define MEDIA_ENT_T_DEVNODE		MEDIA_ENT_F_OLD_BASE
> > +#define MEDIA_ENT_T_DEVNODE_V4L		MEDIA_ENT_F_IO
> >  #define MEDIA_ENT_T_DEVNODE_FB		(MEDIA_ENT_T_DEVNODE + 2)
> >  #define MEDIA_ENT_T_DEVNODE_ALSA	(MEDIA_ENT_T_DEVNODE + 3)
> >  #define MEDIA_ENT_T_DEVNODE_DVB		(MEDIA_ENT_T_DEVNODE + 4)
> > +
> > +#define MEDIA_ENT_T_UNKNOWN		MEDIA_ENT_F_UNKNOWN
> > +#define MEDIA_ENT_T_V4L2_VIDEO		MEDIA_ENT_F_IO
> > +#define MEDIA_ENT_T_V4L2_SUBDEV		MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN
> > +#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR	MEDIA_ENT_F_CAM_SENSOR
> > +#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH	MEDIA_ENT_F_FLASH
> > +#define MEDIA_ENT_T_V4L2_SUBDEV_LENS	MEDIA_ENT_F_LENS
> > +#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER	MEDIA_ENT_F_ATV_DECODER
> > +#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER	MEDIA_ENT_F_TUNER
> >  #endif
> >  
> >  /* Entity flags */
> > 
> 
> Overall I really like this.

Fixes applied.

The actual patch merged follows.

---


[media] uapi/media.h: Rename entities types to functions

Rename the userspace types from MEDIA_ENT_T_ to MEDIA_ENT_F_
and add the backward compatibility bits.

The changes at the .c files was generated by the following
coccinelle script:

@@
@@
-MEDIA_ENT_T_UNKNOWN
+MEDIA_ENT_F_UNKNOWN
@@
@@
-MEDIA_ENT_T_DVB_BASE
+MEDIA_ENT_F_DVB_BASE
@@
@@
-MEDIA_ENT_T_V4L2_BASE
+MEDIA_ENT_F_V4L2_BASE
@@
@@
-MEDIA_ENT_T_V4L2_SUBDEV_BASE
+MEDIA_ENT_F_V4L2_SUBDEV_BASE
@@
@@
-MEDIA_ENT_T_CONNECTOR_BASE
+MEDIA_ENT_F_CONNECTOR_BASE
@@
@@
-MEDIA_ENT_T_V4L2_VIDEO
+MEDIA_ENT_F_IO_V4L
@@
@@
-MEDIA_ENT_T_V4L2_VBI
+MEDIA_ENT_F_IO_VBI
@@
@@
-MEDIA_ENT_T_V4L2_SWRADIO
+MEDIA_ENT_F_IO_SWRADIO
@@
@@
-MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN
+MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN
@@
@@
-MEDIA_ENT_T_CONN_RF
+MEDIA_ENT_F_CONN_RF
@@
@@
-MEDIA_ENT_T_CONN_SVIDEO
+MEDIA_ENT_F_CONN_SVIDEO
@@
@@
-MEDIA_ENT_T_CONN_COMPOSITE
+MEDIA_ENT_F_CONN_COMPOSITE
@@
@@
-MEDIA_ENT_T_CONN_TEST
+MEDIA_ENT_F_CONN_TEST
@@
@@
-MEDIA_ENT_T_V4L2_SUBDEV_SENSOR
+MEDIA_ENT_F_CAM_SENSOR
@@
@@
-MEDIA_ENT_T_V4L2_SUBDEV_FLASH
+MEDIA_ENT_F_FLASH
@@
@@
-MEDIA_ENT_T_V4L2_SUBDEV_LENS
+MEDIA_ENT_F_LENS
@@
@@
-MEDIA_ENT_T_V4L2_SUBDEV_DECODER
+MEDIA_ENT_F_ATV_DECODER
@@
@@
-MEDIA_ENT_T_V4L2_SUBDEV_TUNER
+MEDIA_ENT_F_TUNER
@@
@@
-MEDIA_ENT_T_DVB_DEMOD
+MEDIA_ENT_F_DTV_DEMOD
@@
@@
-MEDIA_ENT_T_DVB_DEMUX
+MEDIA_ENT_F_TS_DEMUX
@@
@@
-MEDIA_ENT_T_DVB_TSOUT
+MEDIA_ENT_F_IO_DTV
@@
@@
-MEDIA_ENT_T_DVB_CA
+MEDIA_ENT_F_DTV_CA
@@
@@
-MEDIA_ENT_T_DVB_NET_DECAP
+MEDIA_ENT_F_DTV_NET_DECAP

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 f6fc95d1345b..f64e8b3fb687 100644
--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -242,7 +242,7 @@ static int dvb_create_tsout_entity(struct dvb_device *dvbdev,
 		if (!entity->name)
 			return -ENOMEM;
 
-		entity->function = MEDIA_ENT_T_DVB_TSOUT;
+		entity->function = MEDIA_ENT_F_IO_DTV;
 		pads->flags = MEDIA_PAD_FL_SINK;
 
 		ret = media_entity_init(entity, 1, pads);
@@ -315,18 +315,18 @@ static int dvb_create_media_entity(struct dvb_device *dvbdev,
 
 	switch (type) {
 	case DVB_DEVICE_FRONTEND:
-		dvbdev->entity->function = MEDIA_ENT_T_DVB_DEMOD;
+		dvbdev->entity->function = MEDIA_ENT_F_DTV_DEMOD;
 		dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK;
 		dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE;
 		break;
 	case DVB_DEVICE_DEMUX:
-		dvbdev->entity->function = MEDIA_ENT_T_DVB_DEMUX;
+		dvbdev->entity->function = MEDIA_ENT_F_TS_DEMUX;
 		dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK;
 		for (i = 1; i < npads; i++)
 			dvbdev->pads[i].flags = MEDIA_PAD_FL_SOURCE;
 		break;
 	case DVB_DEVICE_CA:
-		dvbdev->entity->function = MEDIA_ENT_T_DVB_CA;
+		dvbdev->entity->function = MEDIA_ENT_F_DTV_CA;
 		dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK;
 		dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE;
 		break;
@@ -556,16 +556,16 @@ int dvb_create_media_graph(struct dvb_adapter *adap)
 
 	media_device_for_each_entity(entity, mdev) {
 		switch (entity->function) {
-		case MEDIA_ENT_T_V4L2_SUBDEV_TUNER:
+		case MEDIA_ENT_F_TUNER:
 			tuner = entity;
 			break;
-		case MEDIA_ENT_T_DVB_DEMOD:
+		case MEDIA_ENT_F_DTV_DEMOD:
 			demod = entity;
 			break;
-		case MEDIA_ENT_T_DVB_DEMUX:
+		case MEDIA_ENT_F_TS_DEMUX:
 			demux = entity;
 			break;
-		case MEDIA_ENT_T_DVB_CA:
+		case MEDIA_ENT_F_DTV_CA:
 			ca = entity;
 			break;
 		}
@@ -594,7 +594,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap)
 	/* Create demux links for each ringbuffer/pad */
 	if (demux) {
 		media_device_for_each_entity(entity, mdev) {
-			if (entity->function == MEDIA_ENT_T_DVB_TSOUT) {
+			if (entity->function == MEDIA_ENT_F_IO_DTV) {
 				if (!strncmp(entity->name, DVR_TSOUT,
 				    strlen(DVR_TSOUT))) {
 					ret = media_create_pad_link(demux,
@@ -639,7 +639,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap)
 		}
 
 		media_device_for_each_entity(entity, mdev) {
-			if (entity->function == MEDIA_ENT_T_DVB_TSOUT) {
+			if (entity->function == MEDIA_ENT_F_IO_DTV) {
 				if (!strcmp(entity->name, DVR_TSOUT)) {
 					link = media_create_intf_link(entity,
 							intf,
diff --git a/drivers/media/dvb-frontends/au8522_decoder.c b/drivers/media/dvb-frontends/au8522_decoder.c
index a6fbe78a70e3..39fab1ab921c 100644
--- a/drivers/media/dvb-frontends/au8522_decoder.c
+++ b/drivers/media/dvb-frontends/au8522_decoder.c
@@ -775,7 +775,7 @@ static int au8522_probe(struct i2c_client *client,
 	state->pads[AU8522_PAD_INPUT].flags = MEDIA_PAD_FL_SINK;
 	state->pads[AU8522_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE;
 	state->pads[AU8522_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
+	sd->entity.function = MEDIA_ENT_F_ATV_DECODER;
 
 	ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads),
 				state->pads);
diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c
index 9d99182cd165..7150f35d5935 100644
--- a/drivers/media/i2c/adp1653.c
+++ b/drivers/media/i2c/adp1653.c
@@ -516,7 +516,7 @@ static int adp1653_probe(struct i2c_client *client,
 	if (ret < 0)
 		goto free_and_quit;
 
-	flash->subdev.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
+	flash->subdev.entity.function = MEDIA_ENT_F_FLASH;
 
 	return 0;
 
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index 0fca8677014c..2ebe9efdfc1b 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -1213,7 +1213,7 @@ static int adv7180_probe(struct i2c_client *client,
 		goto err_unregister_vpp_client;
 
 	state->pad.flags = MEDIA_PAD_FL_SOURCE;
-	sd->entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
+	sd->entity.flags |= MEDIA_ENT_F_ATV_DECODER;
 	ret = media_entity_init(&sd->entity, 1, &state->pad);
 	if (ret)
 		goto err_free_ctrl;
diff --git a/drivers/media/i2c/as3645a.c b/drivers/media/i2c/as3645a.c
index f45108c84f4d..b1bc4d0f76f2 100644
--- a/drivers/media/i2c/as3645a.c
+++ b/drivers/media/i2c/as3645a.c
@@ -831,7 +831,7 @@ static int as3645a_probe(struct i2c_client *client,
 	if (ret < 0)
 		goto done;
 
-	flash->subdev.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
+	flash->subdev.entity.function = MEDIA_ENT_F_FLASH;
 
 	mutex_init(&flash->power_lock);
 
diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c
index e84e042610fa..f2f0992c7e54 100644
--- a/drivers/media/i2c/cx25840/cx25840-core.c
+++ b/drivers/media/i2c/cx25840/cx25840-core.c
@@ -5208,7 +5208,7 @@ static int cx25840_probe(struct i2c_client *client,
 	state->pads[CX25840_PAD_INPUT].flags = MEDIA_PAD_FL_SINK;
 	state->pads[CX25840_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE;
 	state->pads[CX25840_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
+	sd->entity.function = MEDIA_ENT_F_ATV_DECODER;
 
 	ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads),
 				state->pads);
diff --git a/drivers/media/i2c/lm3560.c b/drivers/media/i2c/lm3560.c
index aa8b4832a1bc..98266f707ea0 100644
--- a/drivers/media/i2c/lm3560.c
+++ b/drivers/media/i2c/lm3560.c
@@ -368,7 +368,7 @@ static int lm3560_subdev_init(struct lm3560_flash *flash,
 	rval = media_entity_init(&flash->subdev_led[led_no].entity, 0, NULL);
 	if (rval < 0)
 		goto err_out;
-	flash->subdev_led[led_no].entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
+	flash->subdev_led[led_no].entity.function = MEDIA_ENT_F_FLASH;
 
 	return rval;
 
diff --git a/drivers/media/i2c/lm3646.c b/drivers/media/i2c/lm3646.c
index a52cc3a6fb55..ba5ee0d7a78e 100644
--- a/drivers/media/i2c/lm3646.c
+++ b/drivers/media/i2c/lm3646.c
@@ -285,7 +285,7 @@ static int lm3646_subdev_init(struct lm3646_flash *flash)
 	rval = media_entity_init(&flash->subdev_led.entity, 0, NULL);
 	if (rval < 0)
 		goto err_out;
-	flash->subdev_led.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
+	flash->subdev_led.entity.function = MEDIA_ENT_F_FLASH;
 	return rval;
 
 err_out:
diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c
index ae5645fe3a6e..bec5cea23b65 100644
--- a/drivers/media/i2c/m5mols/m5mols_core.c
+++ b/drivers/media/i2c/m5mols/m5mols_core.c
@@ -978,7 +978,7 @@ static int m5mols_probe(struct i2c_client *client,
 	ret = media_entity_init(&sd->entity, 1, &info->pad);
 	if (ret < 0)
 		return ret;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
 
 	init_waitqueue_head(&info->irq_waitq);
 	mutex_init(&info->lock);
diff --git a/drivers/media/i2c/noon010pc30.c b/drivers/media/i2c/noon010pc30.c
index 0226fc668529..47ea3f79eacc 100644
--- a/drivers/media/i2c/noon010pc30.c
+++ b/drivers/media/i2c/noon010pc30.c
@@ -779,7 +779,7 @@ static int noon010_probe(struct i2c_client *client,
 		goto np_err;
 
 	info->pad.flags = MEDIA_PAD_FL_SOURCE;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
 	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 8a2efe2a24c4..cf8e71610248 100644
--- a/drivers/media/i2c/ov2659.c
+++ b/drivers/media/i2c/ov2659.c
@@ -1445,7 +1445,7 @@ static int ov2659_probe(struct i2c_client *client,
 
 #if defined(CONFIG_MEDIA_CONTROLLER)
 	ov2659->pad.flags = MEDIA_PAD_FL_SOURCE;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
 	ret = media_entity_init(&sd->entity, 1, &ov2659->pad);
 	if (ret < 0) {
 		v4l2_ctrl_handler_free(&ov2659->ctrls);
diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c
index 27c4def7e4fc..adb4aab45c10 100644
--- a/drivers/media/i2c/ov9650.c
+++ b/drivers/media/i2c/ov9650.c
@@ -1500,7 +1500,7 @@ static int ov965x_probe(struct i2c_client *client,
 		return ret;
 
 	ov965x->pad.flags = MEDIA_PAD_FL_SOURCE;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
 	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 dd48e35ede28..3d578f2ce7b2 100644
--- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c
+++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c
@@ -1688,7 +1688,7 @@ static int s5c73m3_probe(struct i2c_client *client,
 
 	state->sensor_pads[S5C73M3_JPEG_PAD].flags = MEDIA_PAD_FL_SOURCE;
 	state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
 
 	ret = media_entity_init(&sd->entity, S5C73M3_NUM_PADS,
 							state->sensor_pads);
@@ -1704,7 +1704,7 @@ static int s5c73m3_probe(struct i2c_client *client,
 	state->oif_pads[OIF_ISP_PAD].flags = MEDIA_PAD_FL_SINK;
 	state->oif_pads[OIF_JPEG_PAD].flags = MEDIA_PAD_FL_SINK;
 	state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE;
-	oif_sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN;
+	oif_sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN;
 
 	ret = media_entity_init(&oif_sd->entity, OIF_NUM_PADS,
 							state->oif_pads);
diff --git a/drivers/media/i2c/s5k4ecgx.c b/drivers/media/i2c/s5k4ecgx.c
index 026d08740537..bacec84e773f 100644
--- a/drivers/media/i2c/s5k4ecgx.c
+++ b/drivers/media/i2c/s5k4ecgx.c
@@ -961,7 +961,7 @@ static int s5k4ecgx_probe(struct i2c_client *client,
 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 
 	priv->pad.flags = MEDIA_PAD_FL_SOURCE;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
 	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 1d47b30953a4..564938ab2abd 100644
--- a/drivers/media/i2c/s5k5baf.c
+++ b/drivers/media/i2c/s5k5baf.c
@@ -408,7 +408,7 @@ static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
 
 static inline bool s5k5baf_is_cis_subdev(struct v4l2_subdev *sd)
 {
-	return sd->entity.function == MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+	return sd->entity.function == MEDIA_ENT_F_CAM_SENSOR;
 }
 
 static inline struct s5k5baf *to_s5k5baf(struct v4l2_subdev *sd)
@@ -1904,7 +1904,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state,
 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 
 	state->cis_pad.flags = MEDIA_PAD_FL_SOURCE;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
 	ret = media_entity_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad);
 	if (ret < 0)
 		goto err;
@@ -1919,7 +1919,7 @@ 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.function = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN;
+	sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN;
 	ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads);
 
 	if (!ret)
diff --git a/drivers/media/i2c/s5k6aa.c b/drivers/media/i2c/s5k6aa.c
index d7244234473e..d71d104441bd 100644
--- a/drivers/media/i2c/s5k6aa.c
+++ b/drivers/media/i2c/s5k6aa.c
@@ -1577,7 +1577,7 @@ static int s5k6aa_probe(struct i2c_client *client,
 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 
 	s5k6aa->pad.flags = MEDIA_PAD_FL_SOURCE;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
 	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 ef325b653697..3eaa69ee341b 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2763,7 +2763,7 @@ static int smiapp_init(struct smiapp_sensor *sensor)
 
 	dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile);
 
-	sensor->pixel_array->sd.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+	sensor->pixel_array->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
 
 	/* final steps */
 	smiapp_read_frame_fmt(sensor);
diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c
index 11e426dbe891..455dd4e6a1da 100644
--- a/drivers/media/i2c/tvp514x.c
+++ b/drivers/media/i2c/tvp514x.c
@@ -1095,7 +1095,7 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
 #if defined(CONFIG_MEDIA_CONTROLLER)
 	decoder->pad.flags = MEDIA_PAD_FL_SOURCE;
 	decoder->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
-	decoder->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
+	decoder->sd.entity.flags |= MEDIA_ENT_F_ATV_DECODER;
 
 	ret = media_entity_init(&decoder->sd.entity, 1, &decoder->pad);
 	if (ret < 0) {
diff --git a/drivers/media/i2c/tvp7002.c b/drivers/media/i2c/tvp7002.c
index a5ee2b8df429..216a07956fe9 100644
--- a/drivers/media/i2c/tvp7002.c
+++ b/drivers/media/i2c/tvp7002.c
@@ -1012,7 +1012,7 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
 #if defined(CONFIG_MEDIA_CONTROLLER)
 	device->pad.flags = MEDIA_PAD_FL_SOURCE;
 	device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
-	device->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
+	device->sd.entity.flags |= MEDIA_ENT_F_ATV_DECODER;
 
 	error = media_entity_init(&device->sd.entity, 1, &device->pad);
 	if (error < 0)
diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
index 83525ac29328..f177d50c7a44 100644
--- a/drivers/media/media-device.c
+++ b/drivers/media/media-device.c
@@ -611,8 +611,8 @@ int __must_check media_device_register_entity(struct media_device *mdev,
 {
 	int i;
 
-	if (entity->function == MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN ||
-	    entity->function == MEDIA_ENT_T_UNKNOWN)
+	if (entity->function == MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN ||
+	    entity->function == MEDIA_ENT_F_UNKNOWN)
 		dev_warn(mdev->dev,
 			 "Entity type for entity %s was not initialized!\n",
 			 entity->name);
diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c
index 1a28e17474c9..06eb74344507 100644
--- a/drivers/media/platform/xilinx/xilinx-dma.c
+++ b/drivers/media/platform/xilinx/xilinx-dma.c
@@ -191,7 +191,7 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe,
 	while ((entity = media_entity_graph_walk_next(&graph))) {
 		struct xvip_dma *dma;
 
-		if (entity->function != MEDIA_ENT_T_V4L2_VIDEO)
+		if (entity->function != MEDIA_ENT_F_IO_V4L)
 			continue;
 
 		dma = to_xvip_dma(media_entity_to_video_device(entity));
diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
index 865d68dc4dc8..1b207fa16a55 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -266,10 +266,10 @@ static int au0828_create_media_graph(struct au0828_dev *dev)
 
 	media_device_for_each_entity(entity, mdev) {
 		switch (entity->function) {
-		case MEDIA_ENT_T_V4L2_SUBDEV_TUNER:
+		case MEDIA_ENT_F_TUNER:
 			tuner = entity;
 			break;
-		case MEDIA_ENT_T_V4L2_SUBDEV_DECODER:
+		case MEDIA_ENT_F_ATV_DECODER:
 			decoder = entity;
 			break;
 		}
diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c
index 642a6a658a20..150824fe382a 100644
--- a/drivers/media/usb/au0828/au0828-video.c
+++ b/drivers/media/usb/au0828/au0828-video.c
@@ -1836,18 +1836,18 @@ static void au0828_analog_create_entities(struct au0828_dev *dev)
 
 		switch (AUVI_INPUT(i).type) {
 		case AU0828_VMUX_COMPOSITE:
-			ent->function = MEDIA_ENT_T_CONN_COMPOSITE;
+			ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
 			break;
 		case AU0828_VMUX_SVIDEO:
-			ent->function = MEDIA_ENT_T_CONN_SVIDEO;
+			ent->function = MEDIA_ENT_F_CONN_SVIDEO;
 			break;
 		case AU0828_VMUX_CABLE:
 		case AU0828_VMUX_TELEVISION:
 		case AU0828_VMUX_DVB:
-			ent->function = MEDIA_ENT_T_CONN_RF;
+			ent->function = MEDIA_ENT_F_CONN_RF;
 			break;
 		default: /* AU0828_VMUX_DEBUG */
-			ent->function = MEDIA_ENT_T_CONN_TEST;
+			ent->function = MEDIA_ENT_F_CONN_TEST;
 			break;
 		}
 
diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c
index 5062c42a694c..0e1efc59ff58 100644
--- a/drivers/media/usb/cx231xx/cx231xx-cards.c
+++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
@@ -1250,10 +1250,10 @@ static int cx231xx_create_media_graph(struct cx231xx *dev)
 
 	media_device_for_each_entity(entity, mdev) {
 		switch (entity->function) {
-		case MEDIA_ENT_T_V4L2_SUBDEV_TUNER:
+		case MEDIA_ENT_F_TUNER:
 			tuner = entity;
 			break;
-		case MEDIA_ENT_T_V4L2_SUBDEV_DECODER:
+		case MEDIA_ENT_F_ATV_DECODER:
 			decoder = entity;
 			break;
 		}
diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
index e85ef4729333..86c9cbd02016 100644
--- a/drivers/media/usb/cx231xx/cx231xx-video.c
+++ b/drivers/media/usb/cx231xx/cx231xx-video.c
@@ -119,7 +119,7 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
 	 * this should be enough for the actual needs.
 	 */
 	media_device_for_each_entity(entity, mdev) {
-		if (entity->function == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) {
+		if (entity->function == MEDIA_ENT_F_ATV_DECODER) {
 			decoder = entity;
 			break;
 		}
diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c
index e8fc5ec8fc35..05fc4df61b85 100644
--- a/drivers/media/v4l2-core/tuner-core.c
+++ b/drivers/media/v4l2-core/tuner-core.c
@@ -698,7 +698,7 @@ register_client:
 #if defined(CONFIG_MEDIA_CONTROLLER)
 	t->pad[TUNER_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK;
 	t->pad[TUNER_PAD_IF_OUTPUT].flags = MEDIA_PAD_FL_SOURCE;
-	t->sd.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_TUNER;
+	t->sd.entity.function = MEDIA_ENT_F_TUNER;
 	t->sd.entity.name = t->name;
 
 	ret = media_entity_init(&t->sd.entity, TUNER_NUM_PADS, &t->pad[0]);
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index 965449958e97..ed96642c27bf 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -197,7 +197,7 @@ static void v4l2_device_release(struct device *cd)
 	if (v4l2_dev->mdev) {
 		/* Remove interfaces and interface links */
 		media_devnode_remove(vdev->intf_devnode);
-		if (vdev->entity.function != MEDIA_ENT_T_UNKNOWN)
+		if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN)
 			media_device_unregister_entity(&vdev->entity);
 	}
 #endif
@@ -735,20 +735,20 @@ static int video_register_media_controller(struct video_device *vdev, int type)
 	if (!vdev->v4l2_dev->mdev)
 		return 0;
 
-	vdev->entity.function = MEDIA_ENT_T_UNKNOWN;
+	vdev->entity.function = MEDIA_ENT_F_UNKNOWN;
 
 	switch (type) {
 	case VFL_TYPE_GRABBER:
 		intf_type = MEDIA_INTF_T_V4L_VIDEO;
-		vdev->entity.function = MEDIA_ENT_T_V4L2_VIDEO;
+		vdev->entity.function = MEDIA_ENT_F_IO_V4L;
 		break;
 	case VFL_TYPE_VBI:
 		intf_type = MEDIA_INTF_T_V4L_VBI;
-		vdev->entity.function = MEDIA_ENT_T_V4L2_VBI;
+		vdev->entity.function = MEDIA_ENT_F_IO_VBI;
 		break;
 	case VFL_TYPE_SDR:
 		intf_type = MEDIA_INTF_T_V4L_SWRADIO;
-		vdev->entity.function = MEDIA_ENT_T_V4L2_SWRADIO;
+		vdev->entity.function = MEDIA_ENT_F_IO_SWRADIO;
 		break;
 	case VFL_TYPE_RADIO:
 		intf_type = MEDIA_INTF_T_V4L_RADIO;
@@ -766,7 +766,7 @@ static int video_register_media_controller(struct video_device *vdev, int type)
 		return 0;
 	}
 
-	if (vdev->entity.function != MEDIA_ENT_T_UNKNOWN) {
+	if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) {
 		vdev->entity.name = vdev->name;
 
 		/* Needed just for backward compatibility with legacy MC API */
@@ -793,7 +793,7 @@ static int video_register_media_controller(struct video_device *vdev, int type)
 		return -ENOMEM;
 	}
 
-	if (vdev->entity.function != MEDIA_ENT_T_UNKNOWN) {
+	if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) {
 		struct media_link *link;
 
 		link = media_create_intf_link(&vdev->entity,
diff --git a/drivers/media/v4l2-core/v4l2-flash-led-class.c b/drivers/media/v4l2-core/v4l2-flash-led-class.c
index cf7b3cb9a373..5c686a24712b 100644
--- a/drivers/media/v4l2-core/v4l2-flash-led-class.c
+++ b/drivers/media/v4l2-core/v4l2-flash-led-class.c
@@ -655,7 +655,7 @@ struct v4l2_flash *v4l2_flash_init(
 	if (ret < 0)
 		return ERR_PTR(ret);
 
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
+	sd->entity.function = MEDIA_ENT_F_FLASH;
 
 	ret = v4l2_flash_init_controls(v4l2_flash, config);
 	if (ret < 0)
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index b440cb66669c..d63083803144 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -535,7 +535,7 @@ v4l2_subdev_link_validate_get_format(struct media_pad *pad,
 		return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
 	}
 
-	WARN(pad->entity->function != MEDIA_ENT_T_V4L2_VIDEO,
+	WARN(pad->entity->function != MEDIA_ENT_F_IO_V4L,
 	     "Driver bug! Wrong media entity type 0x%08x, entity %s\n",
 	     pad->entity->function, pad->entity->name);
 
@@ -584,7 +584,7 @@ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops)
 	sd->host_priv = NULL;
 #if defined(CONFIG_MEDIA_CONTROLLER)
 	sd->entity.name = sd->name;
-	sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN;
+	sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN;
 #endif
 }
 EXPORT_SYMBOL(v4l2_subdev_init);
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index 70ccd6cf14c1..df84e8eeb24b 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -274,9 +274,9 @@ static inline bool is_media_entity_v4l2_io(struct media_entity *entity)
 		return false;
 
 	switch (entity->function) {
-	case MEDIA_ENT_T_V4L2_VIDEO:
-	case MEDIA_ENT_T_V4L2_VBI:
-	case MEDIA_ENT_T_V4L2_SWRADIO:
+	case MEDIA_ENT_F_IO_V4L:
+	case MEDIA_ENT_F_IO_VBI:
+	case MEDIA_ENT_F_IO_SWRADIO:
 		return true;
 	default:
 		return false;
@@ -289,12 +289,12 @@ static inline bool is_media_entity_v4l2_subdev(struct media_entity *entity)
 		return false;
 
 	switch (entity->function) {
-	case MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN:
-	case MEDIA_ENT_T_V4L2_SUBDEV_SENSOR:
-	case MEDIA_ENT_T_V4L2_SUBDEV_FLASH:
-	case MEDIA_ENT_T_V4L2_SUBDEV_LENS:
-	case MEDIA_ENT_T_V4L2_SUBDEV_DECODER:
-	case MEDIA_ENT_T_V4L2_SUBDEV_TUNER:
+	case MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN:
+	case MEDIA_ENT_F_CAM_SENSOR:
+	case MEDIA_ENT_F_FLASH:
+	case MEDIA_ENT_F_LENS:
+	case MEDIA_ENT_F_ATV_DECODER:
+	case MEDIA_ENT_F_TUNER:
 		return true;
 
 	default:
diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
index 290dd5585dc8..ff6a8010c520 100644
--- a/include/uapi/linux/media.h
+++ b/include/uapi/linux/media.h
@@ -46,87 +46,93 @@ struct media_device_info {
  * Initial value to be used when a new entity is created
  * Drivers should change it to something useful
  */
-#define MEDIA_ENT_T_UNKNOWN	0x00000000
+#define MEDIA_ENT_F_UNKNOWN	0x00000000
 
 /*
- * Base numbers for entity types
+ * Base number ranges for entity functions
  *
- * Please notice that the huge gap of 16 bits for each base is overkill!
- * 8 bits is more than enough to avoid starving entity types for each
- * subsystem.
- *
- * However, It is kept this way just to avoid binary breakages with the
- * namespace provided on legacy versions of this header.
+ * NOTE: those ranges and entity function number are phased just to
+ * make it easier to maintain this file. Userspace should not rely on
+ * the ranges to identify a group of function types, as newer
+ * functions can be added with any name within the full u32 range.
  */
-#define MEDIA_ENT_T_DVB_BASE		0x00000000
-#define MEDIA_ENT_T_V4L2_BASE		0x00010000
-#define MEDIA_ENT_T_V4L2_SUBDEV_BASE	0x00020000
-#define MEDIA_ENT_T_CONNECTOR_BASE	0x00030000
+#define MEDIA_ENT_F_BASE		0x00000000
+#define MEDIA_ENT_F_OLD_BASE		0x00010000
+#define MEDIA_ENT_F_OLD_SUBDEV_BASE	0x00020000
 
 /*
- * V4L2 entities - Those are used for DMA (mmap/DMABUF) and
- *	read()/write() data I/O associated with the V4L2 devnodes.
+ * DVB entities
  */
-#define MEDIA_ENT_T_V4L2_VIDEO		(MEDIA_ENT_T_V4L2_BASE + 1)
-	/*
-	 * Please notice that numbers between MEDIA_ENT_T_V4L2_BASE + 2 and
-	 * MEDIA_ENT_T_V4L2_BASE + 4 can't be used, as those values used
-	 * to be declared for FB, ALSA and DVB entities.
-	 * As those values were never actually used in practice, we're just
-	 * adding them as backward compatibility macros and keeping the
-	 * numberspace clean here. This way, we avoid breaking compilation,
-	 * in the case of having some userspace application using the old
-	 * symbols.
-	 */
-#define MEDIA_ENT_T_V4L2_VBI		(MEDIA_ENT_T_V4L2_BASE + 5)
-#define MEDIA_ENT_T_V4L2_SWRADIO	(MEDIA_ENT_T_V4L2_BASE + 6)
-
-/* V4L2 Sub-device entities */
+#define MEDIA_ENT_F_DTV_DEMOD		(MEDIA_ENT_F_BASE + 1)
+#define MEDIA_ENT_F_TS_DEMUX		(MEDIA_ENT_F_BASE + 2)
+#define MEDIA_ENT_F_DTV_CA		(MEDIA_ENT_F_BASE + 3)
+#define MEDIA_ENT_F_DTV_NET_DECAP	(MEDIA_ENT_F_BASE + 4)
 
 /*
+ * Connectors
+ */
+#define MEDIA_ENT_F_CONN_RF		(MEDIA_ENT_F_BASE + 21)
+#define MEDIA_ENT_F_CONN_SVIDEO		(MEDIA_ENT_F_BASE + 22)
+#define MEDIA_ENT_F_CONN_COMPOSITE	(MEDIA_ENT_F_BASE + 23)
+	/* For internal test signal generators and other debug connectors */
+#define MEDIA_ENT_F_CONN_TEST		(MEDIA_ENT_F_BASE + 24)
+
+/*
+ * I/O entities
+ */
+#define MEDIA_ENT_F_IO_DTV  		(MEDIA_ENT_F_BASE + 31)
+#define MEDIA_ENT_F_IO_VBI  		(MEDIA_ENT_F_BASE + 32)
+#define MEDIA_ENT_F_IO_SWRADIO		(MEDIA_ENT_F_BASE + 33)
+
+/*
+ * Don't touch on those. The ranges MEDIA_ENT_F_OLD_BASE and
+ * MEDIA_ENT_F_OLD_SUBDEV_BASE are kept to keep backward compatibility
+ * with the legacy v1 API.The number range is out of range by purpose:
+ * several previously reserved numbers got excluded from this range.
+ *
  * Subdevs are initialized with MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN,
  * in order to preserve backward compatibility.
  * Drivers should change to the proper subdev type before
  * registering the entity.
  */
-#define MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN	MEDIA_ENT_T_V4L2_SUBDEV_BASE
-
-#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR	(MEDIA_ENT_T_V4L2_SUBDEV_BASE + 1)
-#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH	(MEDIA_ENT_T_V4L2_SUBDEV_BASE + 2)
-#define MEDIA_ENT_T_V4L2_SUBDEV_LENS	(MEDIA_ENT_T_V4L2_SUBDEV_BASE + 3)
-	/* A converter of analogue video to its digital representation. */
-#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER	(MEDIA_ENT_T_V4L2_SUBDEV_BASE + 4)
-	/* Tuner entity is actually both V4L2 and DVB subdev */
-#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER	(MEDIA_ENT_T_V4L2_SUBDEV_BASE + 5)
-
-/* DVB entities */
-#define MEDIA_ENT_T_DVB_DEMOD		(MEDIA_ENT_T_DVB_BASE + 1)
-#define MEDIA_ENT_T_DVB_DEMUX		(MEDIA_ENT_T_DVB_BASE + 2)
-#define MEDIA_ENT_T_DVB_TSOUT		(MEDIA_ENT_T_DVB_BASE + 3)
-#define MEDIA_ENT_T_DVB_CA		(MEDIA_ENT_T_DVB_BASE + 4)
-#define MEDIA_ENT_T_DVB_NET_DECAP	(MEDIA_ENT_T_DVB_BASE + 5)
-
-/* Connectors */
-#define MEDIA_ENT_T_CONN_RF		(MEDIA_ENT_T_CONNECTOR_BASE + 1)
-#define MEDIA_ENT_T_CONN_SVIDEO		(MEDIA_ENT_T_CONNECTOR_BASE + 2)
-#define MEDIA_ENT_T_CONN_COMPOSITE	(MEDIA_ENT_T_CONNECTOR_BASE + 3)
-/* For internal test signal generators and other debug connectors */
-#define MEDIA_ENT_T_CONN_TEST		(MEDIA_ENT_T_CONNECTOR_BASE + 4)
+
+#define MEDIA_ENT_F_IO_V4L  		(MEDIA_ENT_F_OLD_BASE + 1)
+
+#define MEDIA_ENT_F_CAM_SENSOR		(MEDIA_ENT_F_OLD_SUBDEV_BASE + 1)
+#define MEDIA_ENT_F_FLASH		(MEDIA_ENT_F_OLD_SUBDEV_BASE + 2)
+#define MEDIA_ENT_F_LENS		(MEDIA_ENT_F_OLD_SUBDEV_BASE + 3)
+#define MEDIA_ENT_F_ATV_DECODER		(MEDIA_ENT_F_OLD_SUBDEV_BASE + 4)
+#define MEDIA_ENT_F_TUNER		(MEDIA_ENT_F_OLD_SUBDEV_BASE + 5)
+
+#define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN	MEDIA_ENT_F_OLD_SUBDEV_BASE
 
 #ifndef __KERNEL__
-/* Legacy symbols used to avoid userspace compilation breakages */
+
+/*
+ * Legacy symbols used to avoid userspace compilation breakages
+ *
+ * Those symbols map the entity function into types and should be
+ * used only on legacy programs for legacy hardware. Don't rely
+ * on those for MEDIA_IOC_G_TOPOLOGY.
+ */
 #define MEDIA_ENT_TYPE_SHIFT		16
 #define MEDIA_ENT_TYPE_MASK		0x00ff0000
 #define MEDIA_ENT_SUBTYPE_MASK		0x0000ffff
 
-#define MEDIA_ENT_T_DEVNODE		MEDIA_ENT_T_V4L2_BASE
-#define MEDIA_ENT_T_V4L2_SUBDEV		MEDIA_ENT_T_V4L2_SUBDEV_BASE
-
-#define MEDIA_ENT_T_DEVNODE_V4L		MEDIA_ENT_T_V4L2_VIDEO
-
+#define MEDIA_ENT_T_DEVNODE		MEDIA_ENT_F_OLD_BASE
+#define MEDIA_ENT_T_DEVNODE_V4L		MEDIA_ENT_F_IO_V4L
 #define MEDIA_ENT_T_DEVNODE_FB		(MEDIA_ENT_T_DEVNODE + 2)
 #define MEDIA_ENT_T_DEVNODE_ALSA	(MEDIA_ENT_T_DEVNODE + 3)
 #define MEDIA_ENT_T_DEVNODE_DVB		(MEDIA_ENT_T_DEVNODE + 4)
+
+#define MEDIA_ENT_T_UNKNOWN		MEDIA_ENT_F_UNKNOWN
+#define MEDIA_ENT_T_V4L2_VIDEO		MEDIA_ENT_F_IO_V4L
+#define MEDIA_ENT_T_V4L2_SUBDEV		MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN
+#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR	MEDIA_ENT_F_CAM_SENSOR
+#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH	MEDIA_ENT_F_FLASH
+#define MEDIA_ENT_T_V4L2_SUBDEV_LENS	MEDIA_ENT_F_LENS
+#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER	MEDIA_ENT_F_ATV_DECODER
+#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER	MEDIA_ENT_F_TUNER
 #endif
 
 /* Entity flags */