[01/18,media] tuner-core: add an input pad
diff mbox

Message ID 7e90c4ecdcdc15ebb3b32ac075168a93a6b63f4f.1441559233.git.mchehab@osg.samsung.com
State New
Headers show

Commit Message

Mauro Carvalho Chehab Sept. 6, 2015, 5:30 p.m. UTC
Tuners actually have at least one connector on its
input.

Add a PAD to connect it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Comments

Hans Verkuil Sept. 11, 2015, 2:48 p.m. UTC | #1
On 09/06/2015 07:30 PM, Mauro Carvalho Chehab wrote:
> Tuners actually have at least one connector on its
> input.
> 
> Add a PAD to connect it.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>

And yes, I do think tuner.h is the best place for the pad info.

Regards,

	Hans

> 
> diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
> index f00f1a5f279c..a8e7e2398f7a 100644
> --- a/drivers/media/dvb-core/dvbdev.c
> +++ b/drivers/media/dvb-core/dvbdev.c
> @@ -34,6 +34,9 @@
>  #include <linux/mutex.h>
>  #include "dvbdev.h"
>  
> +/* Due to enum tuner_pad_index */
> +#include <media/tuner.h>
> +
>  static DEFINE_MUTEX(dvbdev_mutex);
>  static int dvbdev_debug;
>  
> @@ -552,7 +555,7 @@ void dvb_create_media_graph(struct dvb_adapter *adap)
>  	}
>  
>  	if (tuner && demod)
> -		media_create_pad_link(tuner, 0, demod, 0, 0);
> +		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, demod, 0, 0);
>  
>  	if (demod && demux)
>  		media_create_pad_link(demod, 1, demux, 0, MEDIA_LNK_FL_ENABLED);
> diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
> index e28cabe65934..f54c7d10f350 100644
> --- a/drivers/media/usb/au0828/au0828-core.c
> +++ b/drivers/media/usb/au0828/au0828-core.c
> @@ -27,6 +27,9 @@
>  #include <media/v4l2-common.h>
>  #include <linux/mutex.h>
>  
> +/* Due to enum tuner_pad_index */
> +#include <media/tuner.h>
> +
>  /*
>   * 1 = General debug messages
>   * 2 = USB handling
> @@ -260,7 +263,7 @@ static void au0828_create_media_graph(struct au0828_dev *dev)
>  		return;
>  
>  	if (tuner)
> -		media_create_pad_link(tuner, 0, decoder, 0,
> +		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
>  				      MEDIA_LNK_FL_ENABLED);
>  	media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
>  			      MEDIA_LNK_FL_ENABLED);
> diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c
> index 3b5c9ae39ad3..1070d87efc65 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-cards.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
> @@ -1264,7 +1264,7 @@ static void cx231xx_create_media_graph(struct cx231xx *dev)
>  		return;
>  
>  	if (tuner)
> -		media_create_pad_link(tuner, 0, decoder, 0,
> +		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
>  					 MEDIA_LNK_FL_ENABLED);
>  	media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
>  				 MEDIA_LNK_FL_ENABLED);
> diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c
> index 100b8f069640..b90f2a52db96 100644
> --- a/drivers/media/v4l2-core/tuner-core.c
> +++ b/drivers/media/v4l2-core/tuner-core.c
> @@ -134,8 +134,9 @@ struct tuner {
>  	unsigned int        type; /* chip type id */
>  	void                *config;
>  	const char          *name;
> +
>  #if defined(CONFIG_MEDIA_CONTROLLER)
> -	struct media_pad	pad;
> +	struct media_pad	pad[TUNER_NUM_PADS];
>  #endif
>  };
>  
> @@ -695,11 +696,12 @@ static int tuner_probe(struct i2c_client *client,
>  	/* Should be just before return */
>  register_client:
>  #if defined(CONFIG_MEDIA_CONTROLLER)
> -	t->pad.flags = MEDIA_PAD_FL_SOURCE;
> +	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.type = MEDIA_ENT_T_V4L2_SUBDEV_TUNER;
>  	t->sd.entity.name = t->name;
>  
> -	ret = media_entity_init(&t->sd.entity, 1, &t->pad);
> +	ret = media_entity_init(&t->sd.entity, TUNER_NUM_PADS, &t->pad[0]);
>  	if (ret < 0) {
>  		tuner_err("failed to initialize media entity!\n");
>  		kfree(t);
> diff --git a/include/media/tuner.h b/include/media/tuner.h
> index b46ebb48fe74..95835c8069dd 100644
> --- a/include/media/tuner.h
> +++ b/include/media/tuner.h
> @@ -25,6 +25,14 @@
>  
>  #include <linux/videodev2.h>
>  
> +/* Tuner PADs */
> +/* FIXME: is this the right place for it? */
> +enum tuner_pad_index {
> +	TUNER_PAD_RF_INPUT,
> +	TUNER_PAD_IF_OUTPUT,
> +	TUNER_NUM_PADS
> +};
> +
>  #define ADDR_UNSET (255)
>  
>  #define TUNER_TEMIC_PAL			0        /* 4002 FH5 (3X 7756, 9483) */
> 

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Laurent Pinchart Nov. 23, 2015, 8:01 p.m. UTC | #2
Hi Mauro,

Thank you for the patch.

On Sunday 06 September 2015 14:30:44 Mauro Carvalho Chehab wrote:
> Tuners actually have at least one connector on its
> input.
> 
> Add a PAD to connect it.

The patch looks fine to me, but have you checked that there are no driver 
instantiating a tuner that would get confused by this additional pad, for 
instance in graph traversal code ?

Additionally it should be documented somewhere that drivers instantiating 
tuners are responsible for creating and linking a connector to the tuner 
input.

> 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 f00f1a5f279c..a8e7e2398f7a 100644
> --- a/drivers/media/dvb-core/dvbdev.c
> +++ b/drivers/media/dvb-core/dvbdev.c
> @@ -34,6 +34,9 @@
>  #include <linux/mutex.h>
>  #include "dvbdev.h"
> 
> +/* Due to enum tuner_pad_index */
> +#include <media/tuner.h>
> +
>  static DEFINE_MUTEX(dvbdev_mutex);
>  static int dvbdev_debug;
> 
> @@ -552,7 +555,7 @@ void dvb_create_media_graph(struct dvb_adapter *adap)
>  	}
> 
>  	if (tuner && demod)
> -		media_create_pad_link(tuner, 0, demod, 0, 0);
> +		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, demod, 0, 0);
> 
>  	if (demod && demux)
>  		media_create_pad_link(demod, 1, demux, 0, MEDIA_LNK_FL_ENABLED);
> diff --git a/drivers/media/usb/au0828/au0828-core.c
> b/drivers/media/usb/au0828/au0828-core.c index e28cabe65934..f54c7d10f350
> 100644
> --- a/drivers/media/usb/au0828/au0828-core.c
> +++ b/drivers/media/usb/au0828/au0828-core.c
> @@ -27,6 +27,9 @@
>  #include <media/v4l2-common.h>
>  #include <linux/mutex.h>
> 
> +/* Due to enum tuner_pad_index */
> +#include <media/tuner.h>
> +
>  /*
>   * 1 = General debug messages
>   * 2 = USB handling
> @@ -260,7 +263,7 @@ static void au0828_create_media_graph(struct au0828_dev
> *dev) return;
> 
>  	if (tuner)
> -		media_create_pad_link(tuner, 0, decoder, 0,
> +		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
>  				      MEDIA_LNK_FL_ENABLED);
>  	media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
>  			      MEDIA_LNK_FL_ENABLED);
> diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c
> b/drivers/media/usb/cx231xx/cx231xx-cards.c index
> 3b5c9ae39ad3..1070d87efc65 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-cards.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
> @@ -1264,7 +1264,7 @@ static void cx231xx_create_media_graph(struct cx231xx
> *dev) return;
> 
>  	if (tuner)
> -		media_create_pad_link(tuner, 0, decoder, 0,
> +		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
>  					 MEDIA_LNK_FL_ENABLED);
>  	media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
>  				 MEDIA_LNK_FL_ENABLED);
> diff --git a/drivers/media/v4l2-core/tuner-core.c
> b/drivers/media/v4l2-core/tuner-core.c index 100b8f069640..b90f2a52db96
> 100644
> --- a/drivers/media/v4l2-core/tuner-core.c
> +++ b/drivers/media/v4l2-core/tuner-core.c
> @@ -134,8 +134,9 @@ struct tuner {
>  	unsigned int        type; /* chip type id */
>  	void                *config;
>  	const char          *name;
> +
>  #if defined(CONFIG_MEDIA_CONTROLLER)
> -	struct media_pad	pad;
> +	struct media_pad	pad[TUNER_NUM_PADS];
>  #endif
>  };
> 
> @@ -695,11 +696,12 @@ static int tuner_probe(struct i2c_client *client,
>  	/* Should be just before return */
>  register_client:
>  #if defined(CONFIG_MEDIA_CONTROLLER)
> -	t->pad.flags = MEDIA_PAD_FL_SOURCE;
> +	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.type = MEDIA_ENT_T_V4L2_SUBDEV_TUNER;
>  	t->sd.entity.name = t->name;
> 
> -	ret = media_entity_init(&t->sd.entity, 1, &t->pad);
> +	ret = media_entity_init(&t->sd.entity, TUNER_NUM_PADS, &t->pad[0]);
>  	if (ret < 0) {
>  		tuner_err("failed to initialize media entity!\n");
>  		kfree(t);
> diff --git a/include/media/tuner.h b/include/media/tuner.h
> index b46ebb48fe74..95835c8069dd 100644
> --- a/include/media/tuner.h
> +++ b/include/media/tuner.h
> @@ -25,6 +25,14 @@
> 
>  #include <linux/videodev2.h>
> 
> +/* Tuner PADs */
> +/* FIXME: is this the right place for it? */
> +enum tuner_pad_index {
> +	TUNER_PAD_RF_INPUT,
> +	TUNER_PAD_IF_OUTPUT,
> +	TUNER_NUM_PADS
> +};
> +
>  #define ADDR_UNSET (255)
> 
>  #define TUNER_TEMIC_PAL			0        /* 4002 FH5 (3X 7756, 9483) */
Mauro Carvalho Chehab Nov. 24, 2015, 11 a.m. UTC | #3
Em Mon, 23 Nov 2015 22:01:23 +0200
Laurent Pinchart <laurent.pinchart@ideasonboard.com> escreveu:

> Hi Mauro,
> 
> Thank you for the patch.
> 
> On Sunday 06 September 2015 14:30:44 Mauro Carvalho Chehab wrote:
> > Tuners actually have at least one connector on its
> > input.
> > 
> > Add a PAD to connect it.
> 
> The patch looks fine to me, but have you checked that there are no driver 
> instantiating a tuner that would get confused by this additional pad, for 
> instance in graph traversal code ?

The only drivers that use tuners ATM are the hybrid TV drivers that
we're adding. My plan is to have all of those fixed in time for 4.5.

> Additionally it should be documented somewhere that drivers instantiating 
> tuners are responsible for creating and linking a connector to the tuner 
> input.

True. I'll add it at the documentation.

> 
> > 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 f00f1a5f279c..a8e7e2398f7a 100644
> > --- a/drivers/media/dvb-core/dvbdev.c
> > +++ b/drivers/media/dvb-core/dvbdev.c
> > @@ -34,6 +34,9 @@
> >  #include <linux/mutex.h>
> >  #include "dvbdev.h"
> > 
> > +/* Due to enum tuner_pad_index */
> > +#include <media/tuner.h>
> > +
> >  static DEFINE_MUTEX(dvbdev_mutex);
> >  static int dvbdev_debug;
> > 
> > @@ -552,7 +555,7 @@ void dvb_create_media_graph(struct dvb_adapter *adap)
> >  	}
> > 
> >  	if (tuner && demod)
> > -		media_create_pad_link(tuner, 0, demod, 0, 0);
> > +		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, demod, 0, 0);
> > 
> >  	if (demod && demux)
> >  		media_create_pad_link(demod, 1, demux, 0, MEDIA_LNK_FL_ENABLED);
> > diff --git a/drivers/media/usb/au0828/au0828-core.c
> > b/drivers/media/usb/au0828/au0828-core.c index e28cabe65934..f54c7d10f350
> > 100644
> > --- a/drivers/media/usb/au0828/au0828-core.c
> > +++ b/drivers/media/usb/au0828/au0828-core.c
> > @@ -27,6 +27,9 @@
> >  #include <media/v4l2-common.h>
> >  #include <linux/mutex.h>
> > 
> > +/* Due to enum tuner_pad_index */
> > +#include <media/tuner.h>
> > +
> >  /*
> >   * 1 = General debug messages
> >   * 2 = USB handling
> > @@ -260,7 +263,7 @@ static void au0828_create_media_graph(struct au0828_dev
> > *dev) return;
> > 
> >  	if (tuner)
> > -		media_create_pad_link(tuner, 0, decoder, 0,
> > +		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
> >  				      MEDIA_LNK_FL_ENABLED);
> >  	media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
> >  			      MEDIA_LNK_FL_ENABLED);
> > diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c
> > b/drivers/media/usb/cx231xx/cx231xx-cards.c index
> > 3b5c9ae39ad3..1070d87efc65 100644
> > --- a/drivers/media/usb/cx231xx/cx231xx-cards.c
> > +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
> > @@ -1264,7 +1264,7 @@ static void cx231xx_create_media_graph(struct cx231xx
> > *dev) return;
> > 
> >  	if (tuner)
> > -		media_create_pad_link(tuner, 0, decoder, 0,
> > +		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
> >  					 MEDIA_LNK_FL_ENABLED);
> >  	media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
> >  				 MEDIA_LNK_FL_ENABLED);
> > diff --git a/drivers/media/v4l2-core/tuner-core.c
> > b/drivers/media/v4l2-core/tuner-core.c index 100b8f069640..b90f2a52db96
> > 100644
> > --- a/drivers/media/v4l2-core/tuner-core.c
> > +++ b/drivers/media/v4l2-core/tuner-core.c
> > @@ -134,8 +134,9 @@ struct tuner {
> >  	unsigned int        type; /* chip type id */
> >  	void                *config;
> >  	const char          *name;
> > +
> >  #if defined(CONFIG_MEDIA_CONTROLLER)
> > -	struct media_pad	pad;
> > +	struct media_pad	pad[TUNER_NUM_PADS];
> >  #endif
> >  };
> > 
> > @@ -695,11 +696,12 @@ static int tuner_probe(struct i2c_client *client,
> >  	/* Should be just before return */
> >  register_client:
> >  #if defined(CONFIG_MEDIA_CONTROLLER)
> > -	t->pad.flags = MEDIA_PAD_FL_SOURCE;
> > +	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.type = MEDIA_ENT_T_V4L2_SUBDEV_TUNER;
> >  	t->sd.entity.name = t->name;
> > 
> > -	ret = media_entity_init(&t->sd.entity, 1, &t->pad);
> > +	ret = media_entity_init(&t->sd.entity, TUNER_NUM_PADS, &t->pad[0]);
> >  	if (ret < 0) {
> >  		tuner_err("failed to initialize media entity!\n");
> >  		kfree(t);
> > diff --git a/include/media/tuner.h b/include/media/tuner.h
> > index b46ebb48fe74..95835c8069dd 100644
> > --- a/include/media/tuner.h
> > +++ b/include/media/tuner.h
> > @@ -25,6 +25,14 @@
> > 
> >  #include <linux/videodev2.h>
> > 
> > +/* Tuner PADs */
> > +/* FIXME: is this the right place for it? */
> > +enum tuner_pad_index {
> > +	TUNER_PAD_RF_INPUT,
> > +	TUNER_PAD_IF_OUTPUT,
> > +	TUNER_NUM_PADS
> > +};
> > +
> >  #define ADDR_UNSET (255)
> > 
> >  #define TUNER_TEMIC_PAL			0        /* 4002 FH5 (3X 7756, 9483) */
> 
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Patch
diff mbox

diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
index f00f1a5f279c..a8e7e2398f7a 100644
--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -34,6 +34,9 @@ 
 #include <linux/mutex.h>
 #include "dvbdev.h"
 
+/* Due to enum tuner_pad_index */
+#include <media/tuner.h>
+
 static DEFINE_MUTEX(dvbdev_mutex);
 static int dvbdev_debug;
 
@@ -552,7 +555,7 @@  void dvb_create_media_graph(struct dvb_adapter *adap)
 	}
 
 	if (tuner && demod)
-		media_create_pad_link(tuner, 0, demod, 0, 0);
+		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, demod, 0, 0);
 
 	if (demod && demux)
 		media_create_pad_link(demod, 1, demux, 0, MEDIA_LNK_FL_ENABLED);
diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
index e28cabe65934..f54c7d10f350 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -27,6 +27,9 @@ 
 #include <media/v4l2-common.h>
 #include <linux/mutex.h>
 
+/* Due to enum tuner_pad_index */
+#include <media/tuner.h>
+
 /*
  * 1 = General debug messages
  * 2 = USB handling
@@ -260,7 +263,7 @@  static void au0828_create_media_graph(struct au0828_dev *dev)
 		return;
 
 	if (tuner)
-		media_create_pad_link(tuner, 0, decoder, 0,
+		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
 				      MEDIA_LNK_FL_ENABLED);
 	media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
 			      MEDIA_LNK_FL_ENABLED);
diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c
index 3b5c9ae39ad3..1070d87efc65 100644
--- a/drivers/media/usb/cx231xx/cx231xx-cards.c
+++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
@@ -1264,7 +1264,7 @@  static void cx231xx_create_media_graph(struct cx231xx *dev)
 		return;
 
 	if (tuner)
-		media_create_pad_link(tuner, 0, decoder, 0,
+		media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
 					 MEDIA_LNK_FL_ENABLED);
 	media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
 				 MEDIA_LNK_FL_ENABLED);
diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c
index 100b8f069640..b90f2a52db96 100644
--- a/drivers/media/v4l2-core/tuner-core.c
+++ b/drivers/media/v4l2-core/tuner-core.c
@@ -134,8 +134,9 @@  struct tuner {
 	unsigned int        type; /* chip type id */
 	void                *config;
 	const char          *name;
+
 #if defined(CONFIG_MEDIA_CONTROLLER)
-	struct media_pad	pad;
+	struct media_pad	pad[TUNER_NUM_PADS];
 #endif
 };
 
@@ -695,11 +696,12 @@  static int tuner_probe(struct i2c_client *client,
 	/* Should be just before return */
 register_client:
 #if defined(CONFIG_MEDIA_CONTROLLER)
-	t->pad.flags = MEDIA_PAD_FL_SOURCE;
+	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.type = MEDIA_ENT_T_V4L2_SUBDEV_TUNER;
 	t->sd.entity.name = t->name;
 
-	ret = media_entity_init(&t->sd.entity, 1, &t->pad);
+	ret = media_entity_init(&t->sd.entity, TUNER_NUM_PADS, &t->pad[0]);
 	if (ret < 0) {
 		tuner_err("failed to initialize media entity!\n");
 		kfree(t);
diff --git a/include/media/tuner.h b/include/media/tuner.h
index b46ebb48fe74..95835c8069dd 100644
--- a/include/media/tuner.h
+++ b/include/media/tuner.h
@@ -25,6 +25,14 @@ 
 
 #include <linux/videodev2.h>
 
+/* Tuner PADs */
+/* FIXME: is this the right place for it? */
+enum tuner_pad_index {
+	TUNER_PAD_RF_INPUT,
+	TUNER_PAD_IF_OUTPUT,
+	TUNER_NUM_PADS
+};
+
 #define ADDR_UNSET (255)
 
 #define TUNER_TEMIC_PAL			0        /* 4002 FH5 (3X 7756, 9483) */