Change watchdog to watchcat

drivers/watchdog/watchcat_core.h

@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ *	watchcat_core.h
+ *
+ *	(c) Copyright 2008-2011 Alan Cox <alan@lxorguk.ukuu.org.uk>,
+ *						All Rights Reserved.
+ *
+ *	(c) Copyright 2008-2011 Wim Van Sebroeck <wim@iguana.be>.
+ *
+ *	(c) Copyright 2021 Hewlett Packard Enterprise Development LP.
+ *
+ *	This source code is part of the generic code that can be used
+ *	by all the watchcat timer drivers.
+ *
+ *	Based on source code of the following authors:
+ *	  Matt Domsch <Matt_Domsch@dell.com>,
+ *	  Rob Radez <rob@osinvestor.com>,
+ *	  Rusty Lynch <rusty@linux.co.intel.com>
+ *	  Satyam Sharma <satyam@infradead.org>
+ *	  Randy Dunlap <randy.dunlap@oracle.com>
+ *
+ *	Neither Alan Cox, CymruNet Ltd., Wim Van Sebroeck nor Iguana vzw.
+ *	admit liability nor provide warranty for any of this software.
+ *	This material is provided "AS-IS" and at no charge.
+ */
+
+#include <linux/hrtimer.h>
+#include <linux/kthread.h>
+
+#define MAX_catS	32	/* Maximum number of watchcat devices */
+
+/*
+ * struct watchcat_core_data - watchcat core internal data
+ * @dev:	The watchcat's internal device
+ * @cdev:	The watchcat's Character device.
+ * @wdd:	Pointer to watchcat device.
+ * @lock:	Lock for watchcat core.
+ * @status:	Watchcat core internal status bits.
+ */
+struct watchcat_core_data {
+	struct device dev;
+	struct cdev cdev;
+	struct watchcat_device *wdd;
+	struct mutex lock;
+	ktime_t last_keepalive;
+	ktime_t last_hw_keepalive;
+	ktime_t open_deadline;
+	struct hrtimer timer;
+	struct kthread_work work;
+#if IS_ENABLED(CONFIG_WATCHcat_HRTIMER_PRETIMEOUT)
+	struct hrtimer pretimeout_timer;
+#endif
+	unsigned long status;		/* Internal status bits */
+#define _Wcat_DEV_OPEN		0	/* Opened ? */
+#define _Wcat_ALLOW_RELEASE	1	/* Did we receive the magic char ? */
+#define _Wcat_KEEPALIVE		2	/* Did we receive a keepalive ? */
+};
+
+/*
+ *	Functions/procedures to be called by the core
+ */
+extern int watchcat_dev_register(struct watchcat_device *);
+extern void watchcat_dev_unregister(struct watchcat_device *);
+extern int __init watchcat_dev_init(void);
+extern void __exit watchcat_dev_exit(void);
+
+static inline bool watchcat_have_pretimeout(struct watchcat_device *wdd)
+{
+	return wdd->info->options & WDIOF_PRETIMEOUT ||
+	       IS_ENABLED(CONFIG_WATCHcat_HRTIMER_PRETIMEOUT);
+}
+
+#if IS_ENABLED(CONFIG_WATCHcat_HRTIMER_PRETIMEOUT)
+void watchcat_hrtimer_pretimeout_init(struct watchcat_device *wdd);
+void watchcat_hrtimer_pretimeout_start(struct watchcat_device *wdd);
+void watchcat_hrtimer_pretimeout_stop(struct watchcat_device *wdd);
+#else
+static inline void watchcat_hrtimer_pretimeout_init(struct watchcat_device *wdd) {}
+static inline void watchcat_hrtimer_pretimeout_start(struct watchcat_device *wdd) {}
+static inline void watchcat_hrtimer_pretimeout_stop(struct watchcat_device *wdd) {}
+#endif