| 1 | |
| 2 | |
| 3 | * RTC subsystem, proc interface
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| 4 | *
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| 5 | * Copyright (C) 2005-06 Tower Technologies
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| 6 | * Author: Alessandro Zummo <[email protected]>
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| 7 | *
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| 8 | * based on arch/arm/common/rtctime.c
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| 9 |
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| 10 |
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| 11 | #include <linux/module.h>
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| 12 | #include <linux/rtc.h>
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| 13 | #include <linux/proc_fs.h>
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| 14 | #include <linux/seq_file.h>
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| 15 |
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| 16 | #include "rtc-core.h"
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| 17 |
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| 18 | #define NAME_SIZE 10
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| 19 |
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| 20 | #if defined(CONFIG_RTC_HCTOSYS_DEVICE)
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| 21 | static bool is_rtc_hctosys(struct rtc_device *rtc)
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| 22 | {
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| 23 | int size;
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| 24 | char name[NAME_SIZE];
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| 25 |
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| 26 | size = snprintf(name, NAME_SIZE, "rtc%d", rtc->id);
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| 27 | if (size >= NAME_SIZE)
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| 28 | return false;
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| 29 |
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| 30 | return !strncmp(name, CONFIG_RTC_HCTOSYS_DEVICE, NAME_SIZE);
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| 31 | }
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| 32 | #else
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| 33 | static bool is_rtc_hctosys(struct rtc_device *rtc)
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| 34 | {
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| 35 | return (rtc->id == 0);
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| 36 | }
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| 37 | #endif
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| 38 |
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| 39 | static int rtc_proc_show(struct seq_file *seq, void *offset)
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| 40 | {
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| 41 | int err;
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| 42 | struct rtc_device *rtc = seq->private;
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| 43 | const struct rtc_class_ops *ops = rtc->ops;
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| 44 | struct rtc_wkalrm alrm;
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| 45 | struct rtc_time tm;
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| 46 |
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| 47 | err = rtc_read_time(rtc, &tm);
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| 48 | if (err == 0) {
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| 49 | seq_printf(seq,
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| 50 | "rtc_time\t: %ptRt\n"
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| 51 | "rtc_date\t: %ptRd\n",
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| 52 | &tm, &tm);
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| 53 | }
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| 54 |
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| 55 | err = rtc_read_alarm(rtc, &alrm);
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| 56 | if (err == 0) {
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| 57 | seq_printf(seq, "alrm_time\t: %ptRt\n", &alrm.time);
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| 58 | seq_printf(seq, "alrm_date\t: %ptRd\n", &alrm.time);
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| 59 | seq_printf(seq, "alarm_IRQ\t: %s\n",
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| 60 | alrm.enabled ? "yes" : "no");
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| 61 | seq_printf(seq, "alrm_pending\t: %s\n",
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| 62 | alrm.pending ? "yes" : "no");
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| 63 | seq_printf(seq, "update IRQ enabled\t: %s\n",
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| 64 | (rtc->uie_rtctimer.enabled) ? "yes" : "no");
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| 65 | seq_printf(seq, "periodic IRQ enabled\t: %s\n",
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| 66 | (rtc->pie_enabled) ? "yes" : "no");
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| 67 | seq_printf(seq, "periodic IRQ frequency\t: %d\n",
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| 68 | rtc->irq_freq);
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| 69 | seq_printf(seq, "max user IRQ frequency\t: %d\n",
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| 70 | rtc->max_user_freq);
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| 71 | }
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| 72 |
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| 73 | seq_printf(seq, "24hr\t\t: yes\n");
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| 74 |
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| 75 | if (ops->proc)
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| 76 | ops->proc(rtc->dev.parent, seq);
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| 77 |
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| 78 | return 0;
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| 79 | }
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| 80 |
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| 81 | void rtc_proc_add_device(struct rtc_device *rtc)
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| 82 | {
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| 83 | if (is_rtc_hctosys(rtc))
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| 84 | proc_create_single_data("driver/rtc", 0, NULL, rtc_proc_show,
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| 85 | rtc);
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| 86 | }
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| 87 |
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| 88 | void rtc_proc_del_device(struct rtc_device *rtc)
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| 89 | {
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| 90 | if (is_rtc_hctosys(rtc))
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| 91 | remove_proc_entry("driver/rtc", NULL);
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| 92 | }
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