On 06/18/2015 07:27 PM, Mauro Carvalho Chehab wrote:
> Instead of seeking for the decoder every time analog stream is
> started, cache it.
>
> Requested-by: Hans Verkuil <hverkuil@xxxxxxxxx>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Regards,
Hans
>
> diff --git a/drivers/media/usb/au0828/au0828-cards.c b/drivers/media/usb/au0828/au0828-cards.c
> index 6b469e8c4c6e..f7337dbbc59f 100644
> --- a/drivers/media/usb/au0828/au0828-cards.c
> +++ b/drivers/media/usb/au0828/au0828-cards.c
> @@ -228,6 +228,10 @@ void au0828_card_analog_fe_setup(struct au0828_dev *dev)
> "au8522", 0x8e >> 1, NULL);
> if (sd == NULL)
> pr_err("analog subdev registration failed\n");
> +#if CONFIG_MEDIA_CONTROLLER
> + if (sd)
> + dev->decoder = &sd->entity;
> +#endif
> }
>
> /* Setup tuners */
> diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c
> index 4ebe13673adf..939b2ad73501 100644
> --- a/drivers/media/usb/au0828/au0828-video.c
> +++ b/drivers/media/usb/au0828/au0828-video.c
> @@ -641,11 +641,11 @@ static int au0828_enable_analog_tuner(struct au0828_dev *dev)
> {
> #ifdef CONFIG_MEDIA_CONTROLLER
> struct media_device *mdev = dev->media_dev;
> - struct media_entity *entity, *decoder = NULL, *source;
> + struct media_entity *entity, *source;
> struct media_link *link, *found_link = NULL;
> int i, ret, active_links = 0;
>
> - if (!mdev)
> + if (!mdev || !dev->decoder)
> return 0;
>
> /*
> @@ -655,18 +655,9 @@ static int au0828_enable_analog_tuner(struct au0828_dev *dev)
> * do DVB streaming while the DMA engine is being used for V4L2,
> * this should be enough for the actual needs.
> */
> - media_device_for_each_entity(entity, mdev) {
> - if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) {
> - decoder = entity;
> - break;
> - }
> - }
> - if (!decoder)
> - return 0;
> -
> - for (i = 0; i < decoder->num_links; i++) {
> - link = &decoder->links[i];
> - if (link->sink->entity == decoder) {
> + for (i = 0; i < dev->decoder->num_links; i++) {
> + link = &dev->decoder->links[i];
> + if (link->sink->entity == dev->decoder) {
> found_link = link;
> if (link->flags & MEDIA_LNK_FL_ENABLED)
> active_links++;
> diff --git a/drivers/media/usb/au0828/au0828.h b/drivers/media/usb/au0828/au0828.h
> index 7e6a3bbc68ab..d3644b3fe6fa 100644
> --- a/drivers/media/usb/au0828/au0828.h
> +++ b/drivers/media/usb/au0828/au0828.h
> @@ -280,6 +280,7 @@ struct au0828_dev {
> #ifdef CONFIG_MEDIA_CONTROLLER
> struct media_device *media_dev;
> struct media_pad video_pad, vbi_pad;
> + struct media_entity *decoder;
> #endif
> };
>
>
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