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From a42314a829d8a17ccfd533c90339348b09e85de8 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Tue, 29 Jan 2019 16:13:25 +0000
Subject: [PATCH 341/725] staging: vchiq_arm: Set up dma ranges on child
devices
The VCHIQ driver now loads the audio, camera, codec, and vc-sm
drivers as platform drivers. However they were not being given
the correct DMA configuration.
Call of_dma_configure with the parent (VCHIQ) parameters to be
inherited by the child.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
.../vc04_services/interface/vchiq_arm/vchiq_arm.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -3585,6 +3585,7 @@ static struct platform_device *
vchiq_register_child(struct platform_device *pdev, const char *name)
{
struct platform_device_info pdevinfo;
+ struct platform_device *new_dev;
memset(&pdevinfo, 0, sizeof(pdevinfo));
@@ -3593,7 +3594,17 @@ vchiq_register_child(struct platform_dev
pdevinfo.id = PLATFORM_DEVID_NONE;
pdevinfo.dma_mask = DMA_BIT_MASK(32);
- return platform_device_register_full(&pdevinfo);
+ new_dev = platform_device_register_full(&pdevinfo);
+ if (!new_dev)
+ return NULL;
+
+ /*
+ * We want the dma-ranges etc to be copied from the parent VCHIQ device
+ * to be passed on to the children too.
+ */
+ of_dma_configure(&new_dev->dev, pdev->dev.of_node, true);
+
+ return new_dev;
}
static int vchiq_probe(struct platform_device *pdev)
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