Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * RTC subsystem, proc interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (C) 2005-06 Tower Technologies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Author: Alessandro Zummo <a.zummo@towertech.it>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * based on arch/arm/common/rtctime.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/rtc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "rtc-core.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define NAME_SIZE	10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #if defined(CONFIG_RTC_HCTOSYS_DEVICE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static bool is_rtc_hctosys(struct rtc_device *rtc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	char name[NAME_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	size = snprintf(name, NAME_SIZE, "rtc%d", rtc->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	if (size >= NAME_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	return !strncmp(name, CONFIG_RTC_HCTOSYS_DEVICE, NAME_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static bool is_rtc_hctosys(struct rtc_device *rtc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	return (rtc->id == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static int rtc_proc_show(struct seq_file *seq, void *offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	struct rtc_device *rtc = seq->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	const struct rtc_class_ops *ops = rtc->ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	struct rtc_wkalrm alrm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	struct rtc_time tm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	err = rtc_read_time(rtc, &tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	if (err == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 		seq_printf(seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 			   "rtc_time\t: %ptRt\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 			   "rtc_date\t: %ptRd\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 			   &tm, &tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	err = rtc_read_alarm(rtc, &alrm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	if (err == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		seq_printf(seq, "alrm_time\t: %ptRt\n", &alrm.time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 		seq_printf(seq, "alrm_date\t: %ptRd\n", &alrm.time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 		seq_printf(seq, "alarm_IRQ\t: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 			   alrm.enabled ? "yes" : "no");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 		seq_printf(seq, "alrm_pending\t: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 			   alrm.pending ? "yes" : "no");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		seq_printf(seq, "update IRQ enabled\t: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 			   (rtc->uie_rtctimer.enabled) ? "yes" : "no");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 		seq_printf(seq, "periodic IRQ enabled\t: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 			   (rtc->pie_enabled) ? "yes" : "no");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 		seq_printf(seq, "periodic IRQ frequency\t: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 			   rtc->irq_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 		seq_printf(seq, "max user IRQ frequency\t: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 			   rtc->max_user_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	seq_printf(seq, "24hr\t\t: yes\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	if (ops->proc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 		ops->proc(rtc->dev.parent, seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) void rtc_proc_add_device(struct rtc_device *rtc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 	if (is_rtc_hctosys(rtc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 		proc_create_single_data("driver/rtc", 0, NULL, rtc_proc_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 					rtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) void rtc_proc_del_device(struct rtc_device *rtc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) 	if (is_rtc_hctosys(rtc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) 		remove_proc_entry("driver/rtc", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }