releases/5.1.6/media-cedrus-add-a-quirk-for-not-setting-dma-offset.patch

From d44e90675642a19092c49767881a1b01c0e5eeb6 Mon Sep 17 00:00:00 2001
From: Jernej Skrabec <jernej.skrabec@siol.net>
Date: Mon, 28 Jan 2019 15:55:00 -0500
Subject: media: cedrus: Add a quirk for not setting DMA offset

[ Upstream commit 70a4f5cda82f7197c350099b66fd23506620810e ]

H6 VPU doesn't work if DMA offset is set.

Add a quirk for it.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/media/sunxi/cedrus/cedrus.h    | 3 +++
 drivers/staging/media/sunxi/cedrus/cedrus_hw.c | 3 ++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.h b/drivers/staging/media/sunxi/cedrus/cedrus.h
index 4aedd24a98480..c57c04b41d2e8 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus.h
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.h
@@ -28,6 +28,8 @@
 
 #define CEDRUS_CAPABILITY_UNTILED	BIT(0)
 
+#define CEDRUS_QUIRK_NO_DMA_OFFSET	BIT(0)
+
 enum cedrus_codec {
 	CEDRUS_CODEC_MPEG2,
 
@@ -91,6 +93,7 @@ struct cedrus_dec_ops {
 
 struct cedrus_variant {
 	unsigned int	capabilities;
+	unsigned int	quirks;
 };
 
 struct cedrus_dev {
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
index 0acf219a8c918..fbfff7c1c771f 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
@@ -177,7 +177,8 @@ int cedrus_hw_probe(struct cedrus_dev *dev)
 	 */
 
 #ifdef PHYS_PFN_OFFSET
-	dev->dev->dma_pfn_offset = PHYS_PFN_OFFSET;
+	if (!(variant->quirks & CEDRUS_QUIRK_NO_DMA_OFFSET))
+		dev->dev->dma_pfn_offset = PHYS_PFN_OFFSET;
 #endif
 
 	ret = of_reserved_mem_device_init(dev->dev);
-- 
2.20.1