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Subject[PATCH 1/5] [media] staging: omap4iss: separate links creation from entities init
Date
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@osg.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
+ * @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);
--
2.4.3


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