Em Fri, 11 Sep 2015 17:36:42 +0200
Hans Verkuil <hverk...@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 <mche...@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 <mche...@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 */
--
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