misc: nvs: Add NVS GTE support

- Add the Tegra hardware Generic Timestamping Engine support to the
  NVidia Sensor framework.
- Use CONFIG_NVS_GTE in Linux kernel config.

Bug 3046736
Bug 2975033

Change-Id: I55397436ee635cdaf7788a3c5d6dc384601940df
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2342800
(cherry picked from commit 79de33624bb9f6cf10f77251039143d5d3128715)
Signed-off-by: elilliebjerg <elilliebjerg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2439322
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/include/linux/nvs_gte.h b/include/linux/nvs_gte.h
new file mode 100644
index 000000000..f1b4ca15c
--- /dev/null
+++ b/include/linux/nvs_gte.h
@@ -0,0 +1,41 @@
+/* Copyright (c) 2020, 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 version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _NVS_GTE_IRQ_H_
+#define _NVS_GTE_IRQ_H_
+
+#include <linux/device.h>
+
+struct nvs_gte_irq {
+        void *gte;
+        const char *dev_name;
+        int gpio;
+        int irq;
+        u64 irq_ts;
+        u64 err_n;
+};
+
+struct nvs_gte_sts {
+        unsigned int ver;
+        char *gte;
+        char *err;
+        u64 ts_ns;
+        u64 ts_raw;
+};
+
+int nvs_gte_ts(struct nvs_gte_irq *ngi);
+int nvs_gte_exit(struct device *dev, struct nvs_gte_irq *ngi, unsigned int n);
+int nvs_gte_init(struct device *dev, struct nvs_gte_irq *ngi, unsigned int n);
+int nvs_gte_sts(struct nvs_gte_irq *ngi, struct nvs_gte_sts *ngs);
+
+#endif /* _NVS_GTE_IRQ_H_ */
+