media: camss: Use platform_get_irq_byname() to get the interrupt

platform_get_resource_byname(pdev, IORESOURCE_IRQ, ..) relies on static
allocation of IRQ resources in DT core code, this causes an issue
when using hierarchical interrupt domains using "interrupts" property
in the node as this bypasses the hierarchical setup and messes up the
irq chaining.

In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq_byname().

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

4 files changed, 16 insertions, 32 deletions

diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c
index 32f82e471bae..97e0dc3f0cdb 100644
--- a/drivers/media/platform/qcom/camss/camss-csid.c
+++ b/drivers/media/platform/qcom/camss/camss-csid.c
@@ -562,7 +562,6 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
 {
 	struct device *dev = camss->dev;
 	struct platform_device *pdev = to_platform_device(dev);
-	struct resource *r;
 	int i, j;
 	int ret;
 
@@ -601,14 +600,11 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
 
 	/* Interrupt */
 
-	r = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
-					 res->interrupt[0]);
-	if (!r) {
-		dev_err(dev, "missing IRQ\n");
-		return -EINVAL;
-	}
+	ret = platform_get_irq_byname(pdev, res->interrupt[0]);
+	if (ret < 0)
+		return ret;
 
-	csid->irq = r->start;
+	csid->irq = ret;
 	snprintf(csid->irq_name, sizeof(csid->irq_name), "%s_%s%d",
 		 dev_name(dev), MSM_CSID_NAME, csid->id);
 	ret = devm_request_irq(dev, csid->irq, csid->ops->isr,
diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.c b/drivers/media/platform/qcom/camss/camss-csiphy.c
index f1d8d883af8e..445e60e53956 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.c
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.c
@@ -569,7 +569,6 @@ int msm_csiphy_subdev_init(struct camss *camss,
 {
 	struct device *dev = camss->dev;
 	struct platform_device *pdev = to_platform_device(dev);
-	struct resource *r;
 	int i, j;
 	int ret;
 
@@ -613,14 +612,11 @@ int msm_csiphy_subdev_init(struct camss *camss,
 
 	/* Interrupt */
 
-	r = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
-					 res->interrupt[0]);
-	if (!r) {
-		dev_err(dev, "missing IRQ\n");
-		return -EINVAL;
-	}
+	ret = platform_get_irq_byname(pdev, res->interrupt[0]);
+	if (ret < 0)
+		return ret;
 
-	csiphy->irq = r->start;
+	csiphy->irq = ret;
 	snprintf(csiphy->irq_name, sizeof(csiphy->irq_name), "%s_%s%d",
 		 dev_name(dev), MSM_CSIPHY_NAME, csiphy->id);
 
diff --git a/drivers/media/platform/qcom/camss/camss-ispif.c b/drivers/media/platform/qcom/camss/camss-ispif.c
index ba5d65f6ef34..4ee11bb979cd 100644
--- a/drivers/media/platform/qcom/camss/camss-ispif.c
+++ b/drivers/media/platform/qcom/camss/camss-ispif.c
@@ -1100,7 +1100,6 @@ int msm_ispif_subdev_init(struct camss *camss,
 	struct device *dev = camss->dev;
 	struct ispif_device *ispif = camss->ispif;
 	struct platform_device *pdev = to_platform_device(dev);
-	struct resource *r;
 	int i;
 	int ret;
 
@@ -1153,14 +1152,11 @@ int msm_ispif_subdev_init(struct camss *camss,
 
 	/* Interrupt */
 
-	r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, res->interrupt);
-
-	if (!r) {
-		dev_err(dev, "missing IRQ\n");
-		return -EINVAL;
-	}
+	ret = platform_get_irq_byname(pdev, res->interrupt);
+	if (ret < 0)
+		return ret;
 
-	ispif->irq = r->start;
+	ispif->irq = ret;
 	snprintf(ispif->irq_name, sizeof(ispif->irq_name), "%s_%s",
 		 dev_name(dev), MSM_ISPIF_NAME);
 	if (camss->version == CAMSS_8x16)
diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
index 703ea39f1262..5b148e9f8134 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe.c
@@ -1281,7 +1281,6 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
 {
 	struct device *dev = camss->dev;
 	struct platform_device *pdev = to_platform_device(dev);
-	struct resource *r;
 	int i, j;
 	int ret;
 
@@ -1316,14 +1315,11 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
 
 	/* Interrupt */
 
-	r = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
-					 res->interrupt[0]);
-	if (!r) {
-		dev_err(dev, "missing IRQ\n");
-		return -EINVAL;
-	}
+	ret = platform_get_irq_byname(pdev, res->interrupt[0]);
+	if (ret < 0)
+		return ret;
 
-	vfe->irq = r->start;
+	vfe->irq = ret;
 	snprintf(vfe->irq_name, sizeof(vfe->irq_name), "%s_%s%d",
 		 dev_name(dev), MSM_VFE_NAME, id);
 	ret = devm_request_irq(dev, vfe->irq, vfe->ops->isr,