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Date: Sun, 06 Dec 2015 05:10:42 +0200
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Javier Martinez Canillas <javier@....samsung.com>
Cc: linux-kernel@...r.kernel.org,
Hans Verkuil <hans.verkuil@...co.com>,
devel@...verdev.osuosl.org,
Mauro Carvalho Chehab <mchehab@....samsung.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-media@...r.kernel.org
Subject: Re: [PATCH 1/5] [media] staging: omap4iss: separate links creation from entities init
Hi Javier,
Thank you for the patch.
On Thursday 03 September 2015 18:00:32 Javier Martinez Canillas wrote:
> The omap4iss driver initializes the entities and creates the pads links
> before the entities are registered with the media device. This does not
> work now that object IDs are used to create links so the media_device
> has to be set.
>
> Split out the pads links creation from the entity initialization so are
> made after the entities registration.
>
> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
> ---
>
> drivers/staging/media/omap4iss/iss.c | 101 +++++++++++++++---------
> drivers/staging/media/omap4iss/iss_csi2.c | 35 +++++++---
> drivers/staging/media/omap4iss/iss_csi2.h | 1 +
> drivers/staging/media/omap4iss/iss_ipipeif.c | 29 ++++----
> drivers/staging/media/omap4iss/iss_ipipeif.h | 1 +
> drivers/staging/media/omap4iss/iss_resizer.c | 29 ++++----
> drivers/staging/media/omap4iss/iss_resizer.h | 1 +
> 7 files changed, 132 insertions(+), 65 deletions(-)
>
> diff --git a/drivers/staging/media/omap4iss/iss.c
> b/drivers/staging/media/omap4iss/iss.c index 44b88ff3ba83..076ddd412201
> 100644
> --- a/drivers/staging/media/omap4iss/iss.c
> +++ b/drivers/staging/media/omap4iss/iss.c
> @@ -1272,6 +1272,68 @@ done:
> return ret;
> }
>
> +/*
> + * iss_create_pads_links() - Pads links creation for the subdevices
Could you please s/pads_links/links/ and s/pads links/links/ ?
Apart from that,
Acked-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> + * @iss : Pointer to ISS device
> + *
> + * return negative error code or zero on success
> + */
> +static int iss_create_pads_links(struct iss_device *iss)
> +{
> + int ret;
> +
> + ret = omap4iss_csi2_create_pads_links(iss);
> + if (ret < 0) {
> + dev_err(iss->dev, "CSI2 pads links creation failed\n");
> + return ret;
> + }
> +
> + ret = omap4iss_ipipeif_create_pads_links(iss);
> + if (ret < 0) {
> + dev_err(iss->dev, "ISP IPIPEIF pads links creation failed\n");
> + return ret;
> + }
> +
> + ret = omap4iss_resizer_create_pads_links(iss);
> + if (ret < 0) {
> + dev_err(iss->dev, "ISP RESIZER pads links creation failed\n");
> + return ret;
> + }
> +
> + /* Connect the submodules. */
> + ret = media_create_pad_link(
> + &iss->csi2a.subdev.entity, CSI2_PAD_SOURCE,
> + &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0);
> + if (ret < 0)
> + return ret;
> +
> + ret = media_create_pad_link(
> + &iss->csi2b.subdev.entity, CSI2_PAD_SOURCE,
> + &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0);
> + if (ret < 0)
> + return ret;
> +
> + ret = media_create_pad_link(
> + &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP,
> + &iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0);
> + if (ret < 0)
> + return ret;
> +
> + ret = media_create_pad_link(
> + &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP,
> + &iss->ipipe.subdev.entity, IPIPE_PAD_SINK, 0);
> + if (ret < 0)
> + return ret;
> +
> + ret = media_create_pad_link(
> + &iss->ipipe.subdev.entity, IPIPE_PAD_SOURCE_VP,
> + &iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
> +};
> +
> static void iss_cleanup_modules(struct iss_device *iss)
> {
> omap4iss_csi2_cleanup(iss);
> @@ -1314,41 +1376,8 @@ static int iss_initialize_modules(struct iss_device
> *iss) goto error_resizer;
> }
>
> - /* Connect the submodules. */
> - ret = media_create_pad_link(
> - &iss->csi2a.subdev.entity, CSI2_PAD_SOURCE,
> - &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0);
> - if (ret < 0)
> - goto error_link;
> -
> - ret = media_create_pad_link(
> - &iss->csi2b.subdev.entity, CSI2_PAD_SOURCE,
> - &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0);
> - if (ret < 0)
> - goto error_link;
> -
> - ret = media_create_pad_link(
> - &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP,
> - &iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0);
> - if (ret < 0)
> - goto error_link;
> -
> - ret = media_create_pad_link(
> - &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP,
> - &iss->ipipe.subdev.entity, IPIPE_PAD_SINK, 0);
> - if (ret < 0)
> - goto error_link;
> -
> - ret = media_create_pad_link(
> - &iss->ipipe.subdev.entity, IPIPE_PAD_SOURCE_VP,
> - &iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0);
> - if (ret < 0)
> - goto error_link;
> -
> return 0;
>
> -error_link:
> - omap4iss_resizer_cleanup(iss);
> error_resizer:
> omap4iss_ipipe_cleanup(iss);
> error_ipipe:
> @@ -1461,10 +1490,16 @@ static int iss_probe(struct platform_device *pdev)
> if (ret < 0)
> goto error_modules;
>
> + ret = iss_create_pads_links(iss);
> + if (ret < 0)
> + goto error_entities;
> +
> omap4iss_put(iss);
>
> return 0;
>
> +error_entities:
> + iss_unregister_entities(iss);
> error_modules:
> iss_cleanup_modules(iss);
> error_iss:
> diff --git a/drivers/staging/media/omap4iss/iss_csi2.c
> b/drivers/staging/media/omap4iss/iss_csi2.c index
> 50a24e8e8129..907e59edcb04 100644
> --- a/drivers/staging/media/omap4iss/iss_csi2.c
> +++ b/drivers/staging/media/omap4iss/iss_csi2.c
> @@ -1295,16 +1295,8 @@ static int csi2_init_entities(struct iss_csi2_device
> *csi2, const char *subname) if (ret < 0)
> goto error_video;
>
> - /* Connect the CSI2 subdev to the video node. */
> - ret = media_create_pad_link(&csi2->subdev.entity, CSI2_PAD_SOURCE,
> - &csi2->video_out.video.entity, 0, 0);
> - if (ret < 0)
> - goto error_link;
> -
> return 0;
>
> -error_link:
> - omap4iss_video_cleanup(&csi2->video_out);
> error_video:
> media_entity_cleanup(&csi2->subdev.entity);
> return ret;
> @@ -1347,6 +1339,33 @@ int omap4iss_csi2_init(struct iss_device *iss)
> }
>
> /*
> + * omap4iss_csi2_create_pads_links() - CSI2 pads links creation
> + * @iss: Pointer to ISS device
> + *
> + * return negative error code or zero on success
> + */
> +int omap4iss_csi2_create_pads_links(struct iss_device *iss)
> +{
> + struct iss_csi2_device *csi2a = &iss->csi2a;
> + struct iss_csi2_device *csi2b = &iss->csi2b;
> + int ret;
> +
> + /* Connect the CSI2a subdev to the video node. */
> + ret = media_create_pad_link(&csi2a->subdev.entity, CSI2_PAD_SOURCE,
> + &csi2a->video_out.video.entity, 0, 0);
> + if (ret < 0)
> + return ret;
> +
> + /* Connect the CSI2b subdev to the video node. */
> + ret = media_create_pad_link(&csi2b->subdev.entity, CSI2_PAD_SOURCE,
> + &csi2b->video_out.video.entity, 0, 0);
> + if (ret < 0)
> + return ret;
> +
> + return 0;
> +}
> +
> +/*
> * omap4iss_csi2_cleanup - Routine for module driver cleanup
> */
> void omap4iss_csi2_cleanup(struct iss_device *iss)
> diff --git a/drivers/staging/media/omap4iss/iss_csi2.h
> b/drivers/staging/media/omap4iss/iss_csi2.h index
> 3b37978a3bdf..ad9a02d2a576 100644
> --- a/drivers/staging/media/omap4iss/iss_csi2.h
> +++ b/drivers/staging/media/omap4iss/iss_csi2.h
> @@ -151,6 +151,7 @@ struct iss_csi2_device {
> void omap4iss_csi2_isr(struct iss_csi2_device *csi2);
> int omap4iss_csi2_reset(struct iss_csi2_device *csi2);
> int omap4iss_csi2_init(struct iss_device *iss);
> +int omap4iss_csi2_create_pads_links(struct iss_device *iss);
> void omap4iss_csi2_cleanup(struct iss_device *iss);
> void omap4iss_csi2_unregister_entities(struct iss_csi2_device *csi2);
> int omap4iss_csi2_register_entities(struct iss_csi2_device *csi2,
> diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c
> b/drivers/staging/media/omap4iss/iss_ipipeif.c index
> e46b2c07bd5d..36a570e60496 100644
> --- a/drivers/staging/media/omap4iss/iss_ipipeif.c
> +++ b/drivers/staging/media/omap4iss/iss_ipipeif.c
> @@ -762,18 +762,7 @@ static int ipipeif_init_entities(struct
> iss_ipipeif_device *ipipeif) ipipeif->video_out.bpl_zero_padding = 1;
> ipipeif->video_out.bpl_max = 0x1ffe0;
>
> - ret = omap4iss_video_init(&ipipeif->video_out, "ISP IPIPEIF");
> - if (ret < 0)
> - return ret;
> -
> - /* Connect the IPIPEIF subdev to the video node. */
> - ret = media_create_pad_link(&ipipeif->subdev.entity,
> - IPIPEIF_PAD_SOURCE_ISIF_SF,
> - &ipipeif->video_out.video.entity, 0, 0);
> - if (ret < 0)
> - return ret;
> -
> - return 0;
> + return omap4iss_video_init(&ipipeif->video_out, "ISP IPIPEIF");
> }
>
> void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device
> *ipipeif) @@ -826,6 +815,22 @@ int omap4iss_ipipeif_init(struct iss_device
> *iss) }
>
> /*
> + * omap4iss_ipipeif_create_pads_links() - IPIPEIF pads links creation
> + * @iss: Pointer to ISS device
> + *
> + * return negative error code or zero on success
> + */
> +int omap4iss_ipipeif_create_pads_links(struct iss_device *iss)
> +{
> + struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
> +
> + /* Connect the IPIPEIF subdev to the video node. */
> + return media_create_pad_link(&ipipeif->subdev.entity,
> + IPIPEIF_PAD_SOURCE_ISIF_SF,
> + &ipipeif->video_out.video.entity, 0, 0);
> +}
> +
> +/*
> * omap4iss_ipipeif_cleanup - IPIPEIF module cleanup.
> * @iss: Device pointer specific to the OMAP4 ISS.
> */
> diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.h
> b/drivers/staging/media/omap4iss/iss_ipipeif.h index
> cbdccb982eee..28357a65ae97 100644
> --- a/drivers/staging/media/omap4iss/iss_ipipeif.h
> +++ b/drivers/staging/media/omap4iss/iss_ipipeif.h
> @@ -78,6 +78,7 @@ struct iss_ipipeif_device {
> struct iss_device;
>
> int omap4iss_ipipeif_init(struct iss_device *iss);
> +int omap4iss_ipipeif_create_pads_links(struct iss_device *iss);
> void omap4iss_ipipeif_cleanup(struct iss_device *iss);
> int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif,
> struct v4l2_device *vdev);
> diff --git a/drivers/staging/media/omap4iss/iss_resizer.c
> b/drivers/staging/media/omap4iss/iss_resizer.c index
> bc5001002cc5..5de093715f98 100644
> --- a/drivers/staging/media/omap4iss/iss_resizer.c
> +++ b/drivers/staging/media/omap4iss/iss_resizer.c
> @@ -806,18 +806,7 @@ static int resizer_init_entities(struct
> iss_resizer_device *resizer) resizer->video_out.bpl_zero_padding = 1;
> resizer->video_out.bpl_max = 0x1ffe0;
>
> - ret = omap4iss_video_init(&resizer->video_out, "ISP resizer a");
> - if (ret < 0)
> - return ret;
> -
> - /* Connect the RESIZER subdev to the video node. */
> - ret = media_create_pad_link(&resizer->subdev.entity,
> - RESIZER_PAD_SOURCE_MEM,
> - &resizer->video_out.video.entity, 0, 0);
> - if (ret < 0)
> - return ret;
> -
> - return 0;
> + return omap4iss_video_init(&resizer->video_out, "ISP resizer a");
> }
>
> void omap4iss_resizer_unregister_entities(struct iss_resizer_device
> *resizer) @@ -870,6 +859,22 @@ int omap4iss_resizer_init(struct iss_device
> *iss) }
>
> /*
> + * omap4iss_resizer_create_pads_links() - RESIZER pads links creation
> + * @iss: Pointer to ISS device
> + *
> + * return negative error code or zero on success
> + */
> +int omap4iss_resizer_create_pads_links(struct iss_device *iss)
> +{
> + struct iss_resizer_device *resizer = &iss->resizer;
> +
> + /* Connect the RESIZER subdev to the video node. */
> + return media_create_pad_link(&resizer->subdev.entity,
> + RESIZER_PAD_SOURCE_MEM,
> + &resizer->video_out.video.entity, 0, 0);
> +}
> +
> +/*
> * omap4iss_resizer_cleanup - RESIZER module cleanup.
> * @iss: Device pointer specific to the OMAP4 ISS.
> */
> diff --git a/drivers/staging/media/omap4iss/iss_resizer.h
> b/drivers/staging/media/omap4iss/iss_resizer.h index
> 3727498b06a3..00ecc151e511 100644
> --- a/drivers/staging/media/omap4iss/iss_resizer.h
> +++ b/drivers/staging/media/omap4iss/iss_resizer.h
> @@ -61,6 +61,7 @@ struct iss_resizer_device {
> struct iss_device;
>
> int omap4iss_resizer_init(struct iss_device *iss);
> +int omap4iss_resizer_create_pads_links(struct iss_device *iss);
> void omap4iss_resizer_cleanup(struct iss_device *iss);
> int omap4iss_resizer_register_entities(struct iss_resizer_device *resizer,
> struct v4l2_device *vdev);
--
Regards,
Laurent Pinchart
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