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92 lines
2.1 KiB
92 lines
2.1 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* RTC subsystem, proc interface |
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* |
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* Copyright (C) 2005-06 Tower Technologies |
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* Author: Alessandro Zummo <[email protected]> |
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* |
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* based on arch/arm/common/rtctime.c |
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*/ |
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#include <linux/module.h> |
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#include <linux/rtc.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include "rtc-core.h" |
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#define NAME_SIZE 10 |
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#if defined(CONFIG_RTC_HCTOSYS_DEVICE) |
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static bool is_rtc_hctosys(struct rtc_device *rtc) |
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{ |
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int size; |
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char name[NAME_SIZE]; |
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size = scnprintf(name, NAME_SIZE, "rtc%d", rtc->id); |
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if (size > NAME_SIZE) |
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return false; |
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return !strncmp(name, CONFIG_RTC_HCTOSYS_DEVICE, NAME_SIZE); |
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} |
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#else |
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static bool is_rtc_hctosys(struct rtc_device *rtc) |
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{ |
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return (rtc->id == 0); |
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} |
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#endif |
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static int rtc_proc_show(struct seq_file *seq, void *offset) |
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{ |
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int err; |
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struct rtc_device *rtc = seq->private; |
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const struct rtc_class_ops *ops = rtc->ops; |
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struct rtc_wkalrm alrm; |
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struct rtc_time tm; |
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err = rtc_read_time(rtc, &tm); |
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if (err == 0) { |
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seq_printf(seq, |
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"rtc_time\t: %ptRt\n" |
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"rtc_date\t: %ptRd\n", |
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&tm, &tm); |
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} |
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err = rtc_read_alarm(rtc, &alrm); |
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if (err == 0) { |
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seq_printf(seq, "alrm_time\t: %ptRt\n", &alrm.time); |
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seq_printf(seq, "alrm_date\t: %ptRd\n", &alrm.time); |
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seq_printf(seq, "alarm_IRQ\t: %s\n", |
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alrm.enabled ? "yes" : "no"); |
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seq_printf(seq, "alrm_pending\t: %s\n", |
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alrm.pending ? "yes" : "no"); |
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seq_printf(seq, "update IRQ enabled\t: %s\n", |
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(rtc->uie_rtctimer.enabled) ? "yes" : "no"); |
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seq_printf(seq, "periodic IRQ enabled\t: %s\n", |
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(rtc->pie_enabled) ? "yes" : "no"); |
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seq_printf(seq, "periodic IRQ frequency\t: %d\n", |
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rtc->irq_freq); |
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seq_printf(seq, "max user IRQ frequency\t: %d\n", |
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rtc->max_user_freq); |
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} |
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seq_printf(seq, "24hr\t\t: yes\n"); |
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if (ops->proc) |
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ops->proc(rtc->dev.parent, seq); |
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return 0; |
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} |
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void rtc_proc_add_device(struct rtc_device *rtc) |
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{ |
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if (is_rtc_hctosys(rtc)) |
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proc_create_single_data("driver/rtc", 0, NULL, rtc_proc_show, |
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rtc); |
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} |
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void rtc_proc_del_device(struct rtc_device *rtc) |
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{ |
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if (is_rtc_hctosys(rtc)) |
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remove_proc_entry("driver/rtc", NULL); |
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}
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