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root/bsp/drv/dev/rtc/pl030.c

DEFINITIONS

1. pl030_gettime
2. pl030_settime
3. pl030_init

   1 /*-
   2  * Copyright (c) 2005-2009, Kohsuke Ohtani
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  30 /*
  31  * pl030.c - ARM PrimeCell PL030 RTC
  32  */
  34 #include <sys/time.h>
  35 #include <sys/ioctl.h>
  37 #include <driver.h>
  38 #include <rtc.h>
  40 #define RTC_BASE        CONFIG_PL030_BASE
  42 #define RTC_DR          (RTC_BASE + 0x00)
  43 #define RTC_MR          (RTC_BASE + 0x04)
  44 #define RTC_STAT        (RTC_BASE + 0x08)
  45 #define RTC_EOI         (RTC_BASE + 0x08)
  46 #define RTC_LR          (RTC_BASE + 0x0c)
  47 #define RTC_CR          (RTC_BASE + 0x10)
  49 static int      pl030_init(struct driver *);
  50 static int      pl030_gettime(void *, struct timeval *);
  51 static int      pl030_settime(void *, struct timeval *);
  54 struct driver pl030_driver = {
  55         /* name */      "pl030",
  56         /* devops */    NULL,
  57         /* devsz */     0,
  58         /* flags */     0,
  59         /* probe */     NULL,
  60         /* init */      pl030_init,
  61         /* shutdown */  NULL,
  62 };
  64 struct rtc_ops pl030_ops = {
  65         /* gettime */   pl030_gettime,
  66         /* settime */   pl030_settime,
  67 };
  69 static int
pl030_gettime(void *aux, struct timeval *tv)
  71 {
tv->tv_usec = 0;
tv->tv_sec = bus_read_32(RTC_DR);
printf("******* sec=%d\n", tv->tv_sec);
  76         return 0;
  77 }
  79 static int
pl030_settime(void *aux, struct timeval *ts)
  81 {
  82         return 0;
  83 }
  85 static int
pl030_init(struct driver *self)
  87 {
rtc_attach(&pl030_ops, NULL);
  90         return 0;
  91 }