nvpps : new kernel module for time sync

Enable 1PPS time source to correlate GPS/TSC/PTP time domains
fixed trailing white space

Bug 2136350

Change-Id: I5fd83ca53d590dfcad0b0e67e73414c6436d5378
Signed-off-by: David Tao <tehyut@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1749126
Reviewed-by: Greg Lo <glo@nvidia.com>
Reviewed-by: Sumeet Gupta <sumeetg@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Suresh Venkatachalam <skathirampat@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 69 insertions, 0 deletions

diff --git a/include/linux/nvpps_ioctl.h b/include/linux/nvpps_ioctl.h
new file mode 100644
index 000000000..23c782b1d
--- /dev/null
+++ b/include/linux/nvpps_ioctl.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that 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 __NVPPS_IOCTL_H__
+#define __NVPPS_IOCTL_H__
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+
+struct nvpps_version {
+        struct _version {
+                __u32   major;
+                __u32   minor;
+        } version;
+        struct _api {
+                __u32   major;
+                __u32   minor;
+        } api;
+};
+
+#define NVPPS_VERSION_MAJOR     0
+#define NVPPS_VERSION_MINOR     1
+#define NVPPS_API_MAJOR         0
+#define NVPPS_API_MINOR         1
+
+struct nvpps_params {
+        __u32   evt_mode;
+        __u32   tsc_mode;
+};
+
+
+/* evt_mode */
+#define NVPPS_MODE_GPIO         0x01
+#define NVPPS_MODE_TIMER        0x02
+
+/* tsc_mode */
+#define NVPPS_TSC_NSEC          0
+#define NVPPS_TSC_COUNTER       1
+
+
+struct nvpps_timeevent {
+        __u32   evt_nb;
+        __u64   tsc;
+        __u64   ptp;
+        __u64   tsc_res_ns;
+        __u32   evt_mode;
+        __u32   tsc_mode;
+        __u64   irq_latency;
+};
+
+
+#define NVPPS_GETVERSION        _IOR('p', 0x1, struct nvpps_version *)
+#define NVPPS_GETPARAMS         _IOR('p', 0x2, struct nvpps_params *)
+#define NVPPS_SETPARAMS         _IOW('p', 0x3, struct nvpps_params *)
+#define NVPPS_GETEVENT          _IOR('p', 0x4, struct nvpps_timeevent *)
+
+#endif /* !__NVPPS_IOCTL_H__ */