diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/posix-clock.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/posix-clock.h | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/ANDROID_3.4.5/include/linux/posix-clock.h b/ANDROID_3.4.5/include/linux/posix-clock.h deleted file mode 100644 index 34c4498b..00000000 --- a/ANDROID_3.4.5/include/linux/posix-clock.h +++ /dev/null @@ -1,151 +0,0 @@ -/* - * posix-clock.h - support for dynamic clock devices - * - * Copyright (C) 2010 OMICRON electronics GmbH - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#ifndef _LINUX_POSIX_CLOCK_H_ -#define _LINUX_POSIX_CLOCK_H_ - -#include <linux/cdev.h> -#include <linux/fs.h> -#include <linux/poll.h> -#include <linux/posix-timers.h> -#include <linux/rwsem.h> - -struct posix_clock; - -/** - * struct posix_clock_operations - functional interface to the clock - * - * Every posix clock is represented by a character device. Drivers may - * optionally offer extended capabilities by implementing the - * character device methods. The character device file operations are - * first handled by the clock device layer, then passed on to the - * driver by calling these functions. - * - * @owner: The clock driver should set to THIS_MODULE - * @clock_adjtime: Adjust the clock - * @clock_gettime: Read the current time - * @clock_getres: Get the clock resolution - * @clock_settime: Set the current time value - * @timer_create: Create a new timer - * @timer_delete: Remove a previously created timer - * @timer_gettime: Get remaining time and interval of a timer - * @timer_settime: Set a timer's initial expiration and interval - * @fasync: Optional character device fasync method - * @mmap: Optional character device mmap method - * @open: Optional character device open method - * @release: Optional character device release method - * @ioctl: Optional character device ioctl method - * @read: Optional character device read method - * @poll: Optional character device poll method - */ -struct posix_clock_operations { - struct module *owner; - - int (*clock_adjtime)(struct posix_clock *pc, struct timex *tx); - - int (*clock_gettime)(struct posix_clock *pc, struct timespec *ts); - - int (*clock_getres) (struct posix_clock *pc, struct timespec *ts); - - int (*clock_settime)(struct posix_clock *pc, - const struct timespec *ts); - - int (*timer_create) (struct posix_clock *pc, struct k_itimer *kit); - - int (*timer_delete) (struct posix_clock *pc, struct k_itimer *kit); - - void (*timer_gettime)(struct posix_clock *pc, - struct k_itimer *kit, struct itimerspec *tsp); - - int (*timer_settime)(struct posix_clock *pc, - struct k_itimer *kit, int flags, - struct itimerspec *tsp, struct itimerspec *old); - /* - * Optional character device methods: - */ - int (*fasync) (struct posix_clock *pc, - int fd, struct file *file, int on); - - long (*ioctl) (struct posix_clock *pc, - unsigned int cmd, unsigned long arg); - - int (*mmap) (struct posix_clock *pc, - struct vm_area_struct *vma); - - int (*open) (struct posix_clock *pc, fmode_t f_mode); - - uint (*poll) (struct posix_clock *pc, - struct file *file, poll_table *wait); - - int (*release) (struct posix_clock *pc); - - ssize_t (*read) (struct posix_clock *pc, - uint flags, char __user *buf, size_t cnt); -}; - -/** - * struct posix_clock - represents a dynamic posix clock - * - * @ops: Functional interface to the clock - * @cdev: Character device instance for this clock - * @kref: Reference count. - * @rwsem: Protects the 'zombie' field from concurrent access. - * @zombie: If 'zombie' is true, then the hardware has disappeared. - * @release: A function to free the structure when the reference count reaches - * zero. May be NULL if structure is statically allocated. - * - * Drivers should embed their struct posix_clock within a private - * structure, obtaining a reference to it during callbacks using - * container_of(). - */ -struct posix_clock { - struct posix_clock_operations ops; - struct cdev cdev; - struct kref kref; - struct rw_semaphore rwsem; - bool zombie; - void (*release)(struct posix_clock *clk); -}; - -/** - * posix_clock_register() - register a new clock - * @clk: Pointer to the clock. Caller must provide 'ops' and 'release' - * @devid: Allocated device id - * - * A clock driver calls this function to register itself with the - * clock device subsystem. If 'clk' points to dynamically allocated - * memory, then the caller must provide a 'release' function to free - * that memory. - * - * Returns zero on success, non-zero otherwise. - */ -int posix_clock_register(struct posix_clock *clk, dev_t devid); - -/** - * posix_clock_unregister() - unregister a clock - * @clk: Clock instance previously registered via posix_clock_register() - * - * A clock driver calls this function to remove itself from the clock - * device subsystem. The posix_clock itself will remain (in an - * inactive state) until its reference count drops to zero, at which - * point it will be deallocated with its 'release' method. - */ -void posix_clock_unregister(struct posix_clock *clk); - -#endif |