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From a9b691174273348a6818213b9f008ae555e1c98c 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] 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>
---
.../staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -3195,6 +3195,12 @@ vchiq_register_child(struct platform_dev
child = 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 child;
}
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