* [PATCH v1 1/1] media: qcom: camss: Restructure camss_link_entities
2024-11-11 17:38 [PATCH v1 0/1] media: qcom: camss: Re-structure camss_link_entities Vikram Sharma
@ 2024-11-11 17:38 ` Vikram Sharma
2024-11-11 23:29 ` Bryan O'Donoghue
0 siblings, 1 reply; 3+ messages in thread
From: Vikram Sharma @ 2024-11-11 17:38 UTC (permalink / raw)
To: rfoss, todor.too, bryan.odonoghue, krzk+dt
Cc: quic_vikramsa, linux-media, linux-arm-msm, linux-kernel, kernel
Refactor the camss_link_entities function by breaking it down into
three distinct functions. Each function will handle the linking of
a specific entity separately, enhancing readability.
Signed-off-by: Suresh Vankadara <quic_svankada@quicinc.com>
Signed-off-by: Trishansh Bhardwaj <quic_tbhardwa@quicinc.com>
Signed-off-by: Vikram Sharma <quic_vikramsa@quicinc.com>
---
drivers/media/platform/qcom/camss/camss.c | 159 ++++++++++++++--------
1 file changed, 105 insertions(+), 54 deletions(-)
diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index fabe034081ed..1052c01b45f3 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -1840,14 +1840,66 @@ static int camss_init_subdevices(struct camss *camss)
}
/*
- * camss_link_entities - Register subdev nodes and create links
+ * camss_link_entities_csid - Register subdev nodes and create links
* @camss: CAMSS device
*
* Return 0 on success or a negative error code on failure
*/
-static int camss_link_entities(struct camss *camss)
+static int camss_link_entities_csid(struct camss *camss)
{
- int i, j, k;
+ int i, j;
+ int ret, line_num;
+ u16 src_pad;
+ u16 sink_pad;
+ struct media_entity *src_entity;
+ struct media_entity *sink_entity;
+
+ for (i = 0; i < camss->res->csid_num; i++) {
+ if (camss->ispif)
+ line_num = camss->ispif->line_num;
+ else
+ line_num = camss->vfe[i].res->line_num;
+
+ src_entity = &camss->csid[i].subdev.entity;
+ for (j = 0; j < line_num; j++) {
+ if (camss->ispif) {
+ sink_entity = &camss->ispif->line[j].subdev.entity;
+ src_pad = MSM_CSID_PAD_SRC;
+ sink_pad = MSM_ISPIF_PAD_SINK;
+ } else {
+ sink_entity = &camss->vfe[i].line[j].subdev.entity;
+ src_pad = MSM_CSID_PAD_FIRST_SRC + j;
+ sink_pad = MSM_VFE_PAD_SINK;
+ }
+
+ ret = media_create_pad_link(src_entity,
+ src_pad,
+ sink_entity,
+ sink_pad,
+ 0);
+ if (ret < 0) {
+ dev_err(camss->dev,
+ "Failed to link %s->%s entities: %d\n",
+ src_entity->name,
+ sink_entity->name,
+ ret);
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * camss_link_entities_csiphy - Register subdev nodes and create links
+ * @camss: CAMSS device
+ *
+ * Return 0 on success or a negative error code on failure
+ */
+static int camss_link_entities_csiphy(struct camss *camss)
+{
+ int i, j;
int ret;
for (i = 0; i < camss->res->csiphy_num; i++) {
@@ -1868,71 +1920,70 @@ static int camss_link_entities(struct camss *camss)
}
}
- if (camss->ispif) {
- for (i = 0; i < camss->res->csid_num; i++) {
- for (j = 0; j < camss->ispif->line_num; j++) {
- ret = media_create_pad_link(&camss->csid[i].subdev.entity,
- MSM_CSID_PAD_SRC,
- &camss->ispif->line[j].subdev.entity,
- MSM_ISPIF_PAD_SINK,
+ return 0;
+}
+
+/*
+ * camss_link_entities_ispif - Register subdev nodes and create links
+ * @camss: CAMSS device
+ *
+ * Return 0 on success or a negative error code on failure
+ */
+static int camss_link_entities_ispif(struct camss *camss)
+{
+ int i, j, k;
+ int ret;
+
+ for (i = 0; i < camss->ispif->line_num; i++) {
+ for (k = 0; k < camss->res->vfe_num; k++) {
+ for (j = 0; j < camss->vfe[k].res->line_num; j++) {
+ struct v4l2_subdev *ispif = &camss->ispif->line[i].subdev;
+ struct v4l2_subdev *vfe = &camss->vfe[k].line[j].subdev;
+
+ ret = media_create_pad_link(&ispif->entity,
+ MSM_ISPIF_PAD_SRC,
+ &vfe->entity,
+ MSM_VFE_PAD_SINK,
0);
if (ret < 0) {
dev_err(camss->dev,
"Failed to link %s->%s entities: %d\n",
- camss->csid[i].subdev.entity.name,
- camss->ispif->line[j].subdev.entity.name,
+ ispif->entity.name,
+ vfe->entity.name,
ret);
return ret;
}
}
}
-
- for (i = 0; i < camss->ispif->line_num; i++)
- for (k = 0; k < camss->res->vfe_num; k++)
- for (j = 0; j < camss->vfe[k].res->line_num; j++) {
- struct v4l2_subdev *ispif = &camss->ispif->line[i].subdev;
- struct v4l2_subdev *vfe = &camss->vfe[k].line[j].subdev;
-
- ret = media_create_pad_link(&ispif->entity,
- MSM_ISPIF_PAD_SRC,
- &vfe->entity,
- MSM_VFE_PAD_SINK,
- 0);
- if (ret < 0) {
- dev_err(camss->dev,
- "Failed to link %s->%s entities: %d\n",
- ispif->entity.name,
- vfe->entity.name,
- ret);
- return ret;
- }
- }
- } else {
- for (i = 0; i < camss->res->csid_num; i++)
- for (k = 0; k < camss->res->vfe_num; k++)
- for (j = 0; j < camss->vfe[k].res->line_num; j++) {
- struct v4l2_subdev *csid = &camss->csid[i].subdev;
- struct v4l2_subdev *vfe = &camss->vfe[k].line[j].subdev;
-
- ret = media_create_pad_link(&csid->entity,
- MSM_CSID_PAD_FIRST_SRC + j,
- &vfe->entity,
- MSM_VFE_PAD_SINK,
- 0);
- if (ret < 0) {
- dev_err(camss->dev,
- "Failed to link %s->%s entities: %d\n",
- csid->entity.name,
- vfe->entity.name,
- ret);
- return ret;
- }
- }
}
return 0;
}
+/*
+ * camss_link_entities - Register subdev nodes and create links
+ * @camss: CAMSS device
+ *
+ * Return 0 on success or a negative error code on failure
+ */
+static int camss_link_entities(struct camss *camss)
+{
+ int ret;
+
+ ret = camss_link_entities_csiphy(camss);
+ if (ret < 0)
+ return ret;
+
+ ret = camss_link_entities_csid(camss);
+ if (ret < 0)
+ return ret;
+
+ if (camss->ispif)
+ ret = camss_link_entities_ispif(camss);
+
+ return ret;
+}
+
/*
* camss_register_entities - Register subdev nodes and create links
* @camss: CAMSS device
--
2.25.1
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