[PATCH 04/10] staging: vchiq_arm: Fix camera device registration

From: Stefan Wahren <stefan.wahren@i2se.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: devel@driverdev.osuosl.org,
	Stefan Wahren <stefan.wahren@i2se.com>,
	Takashi Iwai <tiwai@suse.de>, Eric Anholt <eric@anholt.net>,
	linux-arm-kernel@lists.infradead.org,
	Dave Stevenson <dave.stevenson@raspberrypi.org>,
	Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Subject: [PATCH 04/10] staging: vchiq_arm: Fix camera device registration
Date: Thu,  6 Dec 2018 19:28:54 +0100	[thread overview]
Message-ID: <1544120940-13716-5-git-send-email-stefan.wahren@i2se.com> (raw)
In-Reply-To: <1544120940-13716-1-git-send-email-stefan.wahren@i2se.com>

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>
---
 .../vc04_services/interface/vchiq_arm/vchiq_arm.c  | 27 +++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index 0caee2d..f2c1dcd 100644
--- 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"
@@ -3479,6 +3480,28 @@ static const struct of_device_id vchiq_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, vchiq_of_match);
 
+static struct platform_device *
+vchiq_register_child(struct platform_device *pdev, const char *name)
+{
+	struct platform_device_info pdevinfo;
+	struct platform_device *child;
+
+	memset(&pdevinfo, 0, sizeof(pdevinfo));
+
+	pdevinfo.parent = &pdev->dev;
+	pdevinfo.name = name;
+	pdevinfo.id = PLATFORM_DEVID_NONE;
+	pdevinfo.dma_mask = DMA_BIT_MASK(32);
+
+	child = platform_device_register_full(&pdevinfo);
+	if (IS_ERR(child)) {
+		dev_warn(&pdev->dev, "%s not registered\n", name);
+		child = NULL;
+	}
+
+	return child;
+}
+
 static int vchiq_probe(struct platform_device *pdev)
 {
 	struct device_node *fw_node;
@@ -3529,9 +3552,7 @@ static int vchiq_probe(struct platform_device *pdev)
 		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;
 
-- 
2.7.4


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