scoutos / prex-0.9.0 / bsp / drv / dev / rtc / pl030.c @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /*-
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2 | * Copyright (c) 2005-2009, Kohsuke Ohtani
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | * 1. Redistributions of source code must retain the above copyright
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9 | * notice, this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright
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11 | * notice, this list of conditions and the following disclaimer in the
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12 | * documentation and/or other materials provided with the distribution.
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13 | * 3. Neither the name of the author nor the names of any co-contributors
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14 | * may be used to endorse or promote products derived from this software
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15 | * without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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27 | * SUCH DAMAGE.
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28 | */
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29 | |||
30 | /*
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31 | * pl030.c - ARM PrimeCell PL030 RTC
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32 | */
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33 | |||
34 | #include <sys/time.h> |
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35 | #include <sys/ioctl.h> |
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36 | |||
37 | #include <driver.h> |
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38 | #include <rtc.h> |
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39 | |||
40 | #define RTC_BASE CONFIG_PL030_BASE
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41 | |||
42 | #define RTC_DR (RTC_BASE + 0x00) |
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43 | #define RTC_MR (RTC_BASE + 0x04) |
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44 | #define RTC_STAT (RTC_BASE + 0x08) |
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45 | #define RTC_EOI (RTC_BASE + 0x08) |
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46 | #define RTC_LR (RTC_BASE + 0x0c) |
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47 | #define RTC_CR (RTC_BASE + 0x10) |
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48 | |||
49 | static int pl030_init(struct driver *); |
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50 | static int pl030_gettime(void *, struct timeval *); |
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51 | static int pl030_settime(void *, struct timeval *); |
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52 | |||
53 | |||
54 | struct driver pl030_driver = {
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55 | /* name */ "pl030", |
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56 | /* devops */ NULL, |
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57 | /* devsz */ 0, |
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58 | /* flags */ 0, |
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59 | /* probe */ NULL, |
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60 | /* init */ pl030_init,
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61 | /* shutdown */ NULL, |
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62 | }; |
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63 | |||
64 | struct rtc_ops pl030_ops = {
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65 | /* gettime */ pl030_gettime,
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66 | /* settime */ pl030_settime,
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67 | }; |
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68 | |||
69 | static int |
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70 | pl030_gettime(void *aux, struct timeval *tv) |
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71 | { |
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72 | |||
73 | tv->tv_usec = 0;
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74 | tv->tv_sec = bus_read_32(RTC_DR); |
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75 | printf("******* sec=%d\n", tv->tv_sec);
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76 | return 0; |
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77 | } |
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78 | |||
79 | static int |
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80 | pl030_settime(void *aux, struct timeval *ts) |
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81 | { |
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82 | return 0; |
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83 | } |
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84 | |||
85 | static int |
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86 | pl030_init(struct driver *self)
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87 | { |
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88 | |||
89 | rtc_attach(&pl030_ops, NULL);
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90 | return 0; |
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91 | } |