950-0205-staging-vchiq_arm-Fix-camera-device-registration.patch

From 58ed78a70c3c3ef1ae99aefdd2c28ac81f66df85 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Mon, 22 Oct 2018 15:16:51 +0200
Subject: [PATCH] staging: vchiq_arm: Fix camera device registration

Since the camera driver isn't probed via DT, we need to properly setup DMA.

Fixes: 37b7b3087a2f ("staging/vc04_services: Register a platform device for the camera driver.")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 .../interface/vchiq_arm/vchiq_arm.c           | 20 ++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -49,6 +49,7 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/compat.h>
+#include <linux/dma-mapping.h>
 #include <soc/bcm2835/raspberrypi-firmware.h>
 
 #include "vchiq_core.h"
@@ -3578,6 +3579,21 @@ void vchiq_platform_conn_state_changed(V
 	}
 }
 
+static struct platform_device *
+vchiq_register_child(struct platform_device *pdev, const char *name)
+{
+	struct platform_device_info pdevinfo;
+
+	memset(&pdevinfo, 0, sizeof(pdevinfo));
+
+	pdevinfo.parent = &pdev->dev;
+	pdevinfo.name = name;
+	pdevinfo.id = PLATFORM_DEVID_NONE;
+	pdevinfo.dma_mask = DMA_BIT_MASK(32);
+
+	return platform_device_register_full(&pdevinfo);
+}
+
 static int vchiq_probe(struct platform_device *pdev)
 {
 	struct device_node *fw_node;
@@ -3637,9 +3653,7 @@ static int vchiq_probe(struct platform_d
 		VCHIQ_VERSION, VCHIQ_VERSION_MIN,
 		MAJOR(vchiq_devid), MINOR(vchiq_devid));
 
-	bcm2835_camera = platform_device_register_data(&pdev->dev,
-						       "bcm2835-camera", -1,
-						       NULL, 0);
+	bcm2835_camera = vchiq_register_child(pdev, "bcm2835-camera");
 
 	return 0;