tegra: camera: Add nvcsi open close check

This change ensures that a given VI channel can open
or close CSI interface only once. If there are multiple
open or close request on the same VI channel, driver returns
success but does not forward request to RCE.

Bug 3158738

Change-Id: I64d2b182664122d2210c7a9087fabd944d0c6353
Signed-off-by: Aniket Bahadarpurkar <aniketb@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2494100
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Nitin Pai <npai@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/media/capture_vi_channel.h b/include/media/capture_vi_channel.h
index 34c2a10db..3ea25f935 100644
--- a/include/media/capture_vi_channel.h
+++ b/include/media/capture_vi_channel.h
@@ -3,7 +3,7 @@
  *
  * VI channel driver header
  *
- * Copyright (c) 2017-2018 NVIDIA Corporation.  All rights reserved.
+ * Copyright (c) 2017-2021 NVIDIA Corporation.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -47,6 +47,7 @@ struct tegra_vi_channel {
         struct vi_capture *capture_data;
         const struct vi_channel_drv_ops *ops;
         struct device *rtcpu_dev;
+        bool is_stream_open;
 };
 
 int vi_channel_drv_register(struct platform_device *,