Re: [PATCH 6/6] media: qcom: camss: support for camss driver for sc7280

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Le 28/06/2024 à 20:32, Vikram Sharma a écrit :
From: Suresh Vankadara <quic_svankada@xxxxxxxxxxx>

This change adds support for camss driver for sc7280 soc.

Signed-off-by: Suresh Vankadara <quic_svankada@xxxxxxxxxxx>
Signed-off-by: Trishansh Bhardwaj <quic_tbhardwa@xxxxxxxxxxx>
Signed-off-by: Vikram Sharma <quic_vikramsa@xxxxxxxxxxx>
---

Hi,

...

-	if (camss->res->version == CAMSS_8250) {
+	switch (camss->res->version) {
+	case CAMSS_8250:
  		/* for titan 480, CSID registers are inside the VFE region,
  		 * between the VFE "top" and "bus" registers. this requires
  		 * VFE to be initialized before CSID
@@ -1040,10 +1041,19 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
  		else
  			csid->base = csid->res->parent_dev_ops->get_base_address(camss, id)
  				 + VFE_480_CSID_OFFSET;
-	} else {
+		break;
+	case CAMSS_7280:

Maybe, as said for other places by Bryan, keep it ordered (CAMSS_7280, then CAMSS_8250)?

+		/* for titan 165, CSID registers are inside the VFE region,
+		 * between the VFE "top" and "bus" registers. this requires
+		 * VFE to be initialized before CSID
+		 */
+		csid->base = camss->vfe[id].base + VFE_165_CSID_OFFSET;
+		break;
+	default:
  		csid->base = devm_platform_ioremap_resource_byname(pdev, res->reg[0]);
  		if (IS_ERR(csid->base))
  			return PTR_ERR(csid->base);
+		break;
  	}
/* Interrupt */
diff --git a/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c b/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
index df7e93a5a4f6..c7e507420732 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
+++ b/drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c
@@ -510,6 +510,7 @@ static void csiphy_gen2_config_lanes(struct csiphy_device *csiphy,
  		array_size = ARRAY_SIZE(lane_regs_sdm845[0]);
  		break;
  	case CAMSS_8250:
+	case CAMSS_7280:
  		r = &lane_regs_sm8250[0][0];
  		array_size = ARRAY_SIZE(lane_regs_sm8250[0]);
  		break;
@@ -560,6 +561,7 @@ static bool csiphy_is_gen2(u32 version)
  	case CAMSS_845:
  	case CAMSS_8250:
  	case CAMSS_8280XP:
+	case CAMSS_7280:
  		ret = true;
  		break;
  	}
diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
index 83c5a36d071f..757e872b8eb8 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe.c
@@ -338,6 +338,7 @@ static u32 vfe_src_pad_code(struct vfe_line *line, u32 sink_code,
  	case CAMSS_845:
  	case CAMSS_8250:
  	case CAMSS_8280XP:
+	case CAMSS_7280:

Here as well.

  		switch (sink_code) {
  		case MEDIA_BUS_FMT_YUYV8_1X16:
  		{
@@ -1695,6 +1696,7 @@ static int vfe_bpl_align(struct vfe_device *vfe)
  	case CAMSS_845:
  	case CAMSS_8250:
  	case CAMSS_8280XP:
+	case CAMSS_7280:

Here as well.

  		ret = 16;
  		break;
  	default:

...

+static int camss_link_entities_v2(struct camss *camss)
+{
+	int i, j;
+	int ret;
+
+	for (i = 0; i < camss->res->csiphy_num; i++) {
+		for (j = 0; j < camss->res->csid_num; j++) {
+			ret = media_create_pad_link(&camss->csiphy[i].subdev.entity,
+						    MSM_CSIPHY_PAD_SRC,
+						    &camss->csid[j].subdev.entity,
+						    MSM_CSID_PAD_SINK,
+						    0);

Should there be some error handling path here and below to free the allocated resources?

.link_entities seems to be new and I can't find it in my -next-20240627, so I can't check myself if already handle in a way or another by the framework.

CJ


+			if (ret < 0) {
+				dev_err(camss->dev,
+					"Failed to link %s->%s entities: %d\n",
+					camss->csiphy[i].subdev.entity.name,
+					camss->csid[j].subdev.entity.name,
+					ret);
+				return ret;
+			}
+		}
+	}
+
+	for (i = 0; i < camss->res->csid_num; i++)
+		for (j = 0; j < camss->vfe[i].res->line_num; j++) {
+			struct v4l2_subdev *csid = &camss->csid[i].subdev;
+			struct v4l2_subdev *vfe = &camss->vfe[i].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;
+}

...





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