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@xxxxxxxxxxxxxxx>
>
> 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) */
--
Regards,
Laurent Pinchart
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