From c9146a4fd9900f8cf79b5cf0ce511d4e944e88c3 Mon Sep 17 00:00:00 2001
From: Matti Ryttylainen <mryttylainen@nvidia.com>
Date: Thu, 25 May 2023 16:27:04 +0300
Subject: [PATCH] camera: Enable deferred unmapping for vi/isp

Enable deferred dma buffer unmapping for vi/isp devices

Bug 4067905

Change-Id: I193f762d580d1e0477137f57195b2cb81d4b9d91
Signed-off-by: Matti Ryttylainen <mryttylainen@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2910545
Tested-by: Ashish Mhetre <amhetre@nvidia.com>
Reviewed-by: Ashish Mhetre <amhetre@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Kalle Jokiniemi <kjokiniemi@nvidia.com>
Reviewed-by: Frank Chen <frankc@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
---
 drivers/video/tegra/host/isp/isp5.c | 8 +++++++-
 drivers/video/tegra/host/vi/vi5.c   | 6 ++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/video/tegra/host/isp/isp5.c b/drivers/video/tegra/host/isp/isp5.c
index 814c7652..fc29b72c 100644
--- a/drivers/video/tegra/host/isp/isp5.c
+++ b/drivers/video/tegra/host/isp/isp5.c
@@ -2,13 +2,14 @@
 /*
  * ISP5 driver
  *
- * Copyright (c) 2017-2022, NVIDIA Corporation.  All rights reserved.
+ * Copyright (c) 2017-2023, NVIDIA Corporation.  All rights reserved.
  */
 
 #include <asm/ioctls.h>
 #include <linux/debugfs.h>
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
+#include <linux/dma-buf.h>
 #include <linux/export.h>
 #include <linux/fs.h>
 #include <linux/module.h>
@@ -139,6 +140,11 @@ int isp5_priv_early_probe(struct platform_device *pdev)
 	/* A bit was stolen */
 	(void) dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(39));
 
+#ifdef CONFIG_DMABUF_DEFERRED_UNMAPPING
+	if (dma_buf_defer_unmapping(dev, true) < 0)
+		dev_warn(dev, "Failed to set deferred dma buffer unmapping\n");
+#endif
+
 	return 0;
 
 error:
diff --git a/drivers/video/tegra/host/vi/vi5.c b/drivers/video/tegra/host/vi/vi5.c
index a59ad06f..f98486a4 100644
--- a/drivers/video/tegra/host/vi/vi5.c
+++ b/drivers/video/tegra/host/vi/vi5.c
@@ -9,6 +9,7 @@
 #include <linux/debugfs.h>
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
+#include <linux/dma-buf.h>
 #include <linux/export.h>
 #include <linux/fs.h>
 #include <linux/module.h>
@@ -181,6 +182,11 @@ int vi5_priv_early_probe(struct platform_device *pdev)
 
 	(void) dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(39));
 
+#ifdef CONFIG_DMABUF_DEFERRED_UNMAPPING
+	if (dma_buf_defer_unmapping(dev, true) < 0)
+		dev_warn(dev, "Failed to set deferred dma buffer unmapping\n");
+#endif
+
 	return 0;
 
 put_vi: