drivers/staging/csr/csr_time.c

   1 /*****************************************************************************
   2
   3             (c) Cambridge Silicon Radio Limited 2010
   4             All rights reserved and confidential information of CSR
   5
   6             Refer to LICENSE.txt included with this source for details
   7             on the license terms.
   8
   9 *****************************************************************************/
  10
  11 #include <linux/kernel.h>
  12 #include <linux/version.h>
  13
  14 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
  15 #elif LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 16)
  16 #include <linux/autoconf.h>
  17 #include <linux/config.h>
  18 #endif
  19
  20 #include <linux/time.h>
  21 #include <linux/module.h>
  22
  23 #include "csr_time.h"
  24
  25 CsrTime CsrTimeGet(CsrTime *high)
  26 {
  27     struct timespec ts;
  28     u64 time;
  29     CsrTime low;
  30
  31     ts = current_kernel_time();
  32     time = (u64) ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
  33
  34     if (high != NULL)
  35     {
  36         *high = (CsrTime) ((time >> 32) & 0xFFFFFFFF);
  37     }
  38
  39     low = (CsrTime) (time & 0xFFFFFFFF);
  40
  41     return low;
  42 }
  43 EXPORT_SYMBOL_GPL(CsrTimeGet);