projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| cdf7545a | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 728a2947 AZ |
2 | /* |
| 3 | * RTC subsystem, proc interface | |
| 4 | * | |
| 5 | * Copyright (C) 2005-06 Tower Technologies | |
| 6 | * Author: Alessandro Zummo <a.zummo@towertech.it> | |
| 7 | * | |
| 8 | * based on arch/arm/common/rtctime.c | |
| cdf7545a | 9 | */ |
| 728a2947 AZ |
10 | |
| 11 | #include <linux/module.h> | |
| 12 | #include <linux/rtc.h> | |
| 13 | #include <linux/proc_fs.h> | |
| 14 | #include <linux/seq_file.h> | |
| 15 | ||
| ab6a2d70 DB |
16 | #include "rtc-core.h" |
| 17 | ||
| 92589c98 KM |
18 | #define NAME_SIZE 10 |
| 19 | ||
| 20 | #if defined(CONFIG_RTC_HCTOSYS_DEVICE) | |
| 21 | static bool is_rtc_hctosys(struct rtc_device *rtc) | |
| 22 | { | |
| 23 | int size; | |
| 24 | char name[NAME_SIZE]; | |
| 25 | ||
| 54b90943 DC |
26 | size = snprintf(name, NAME_SIZE, "rtc%d", rtc->id); |
| 27 | if (size >= NAME_SIZE) | |
| 92589c98 KM |
28 | return false; |
| 29 | ||
| 30 | return !strncmp(name, CONFIG_RTC_HCTOSYS_DEVICE, NAME_SIZE); | |
| 31 | } | |
| 32 | #else | |
| 33 | static bool is_rtc_hctosys(struct rtc_device *rtc) | |
| 34 | { | |
| 35 | return (rtc->id == 0); | |
| 36 | } | |
| 37 | #endif | |
| ab6a2d70 | 38 | |
| 728a2947 AZ |
39 | static int rtc_proc_show(struct seq_file *seq, void *offset) |
| 40 | { | |
| 41 | int err; | |
| ab6a2d70 DB |
42 | struct rtc_device *rtc = seq->private; |
| 43 | const struct rtc_class_ops *ops = rtc->ops; | |
| 728a2947 AZ |
44 | struct rtc_wkalrm alrm; |
| 45 | struct rtc_time tm; | |
| 46 | ||
| ab6a2d70 | 47 | err = rtc_read_time(rtc, &tm); |
| 728a2947 AZ |
48 | if (err == 0) { |
| 49 | seq_printf(seq, | |
| 5548cbf7 AS |
50 | "rtc_time\t: %ptRt\n" |
| 51 | "rtc_date\t: %ptRd\n", | |
| 52 | &tm, &tm); | |
| 728a2947 AZ |
53 | } |
| 54 | ||
| ab6a2d70 | 55 | err = rtc_read_alarm(rtc, &alrm); |
| 728a2947 | 56 | if (err == 0) { |
| 5548cbf7 AS |
57 | seq_printf(seq, "alrm_time\t: %ptRt\n", &alrm.time); |
| 58 | seq_printf(seq, "alrm_date\t: %ptRd\n", &alrm.time); | |
| a2db8dfc | 59 | seq_printf(seq, "alarm_IRQ\t: %s\n", |
| 606cc43c | 60 | alrm.enabled ? "yes" : "no"); |
| 728a2947 | 61 | seq_printf(seq, "alrm_pending\t: %s\n", |
| 606cc43c | 62 | alrm.pending ? "yes" : "no"); |
| bca8521c | 63 | seq_printf(seq, "update IRQ enabled\t: %s\n", |
| 606cc43c | 64 | (rtc->uie_rtctimer.enabled) ? "yes" : "no"); |
| bca8521c | 65 | seq_printf(seq, "periodic IRQ enabled\t: %s\n", |
| 606cc43c | 66 | (rtc->pie_enabled) ? "yes" : "no"); |
| bca8521c | 67 | seq_printf(seq, "periodic IRQ frequency\t: %d\n", |
| 606cc43c | 68 | rtc->irq_freq); |
| bca8521c | 69 | seq_printf(seq, "max user IRQ frequency\t: %d\n", |
| 606cc43c | 70 | rtc->max_user_freq); |
| 728a2947 AZ |
71 | } |
| 72 | ||
| adfb4341 AZ |
73 | seq_printf(seq, "24hr\t\t: yes\n"); |
| 74 | ||
| 728a2947 | 75 | if (ops->proc) |
| cd966209 | 76 | ops->proc(rtc->dev.parent, seq); |
| 728a2947 AZ |
77 | |
| 78 | return 0; | |
| 79 | } | |
| 80 | ||
| 7d9f99ec | 81 | void rtc_proc_add_device(struct rtc_device *rtc) |
| 728a2947 | 82 | { |
| 92589c98 | 83 | if (is_rtc_hctosys(rtc)) |
| 59cacb8d | 84 | proc_create_single_data("driver/rtc", 0, NULL, rtc_proc_show, |
| 606cc43c | 85 | rtc); |
| 728a2947 AZ |
86 | } |
| 87 | ||
| 7d9f99ec | 88 | void rtc_proc_del_device(struct rtc_device *rtc) |
| 728a2947 | 89 | { |
| 92589c98 | 90 | if (is_rtc_hctosys(rtc)) |
| 728a2947 | 91 | remove_proc_entry("driver/rtc", NULL); |
| 728a2947 | 92 | } |