1728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo/* 2728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo * RTC subsystem, proc interface 3728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo * 4728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo * Copyright (C) 2005-06 Tower Technologies 5728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo * Author: Alessandro Zummo <a.zummo@towertech.it> 6728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo * 7728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo * based on arch/arm/common/rtctime.c 8728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo * 9728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo * This program is free software; you can redistribute it and/or modify 10728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo * it under the terms of the GNU General Public License version 2 as 11728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo * published by the Free Software Foundation. 12728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo*/ 13728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 14728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo#include <linux/module.h> 15728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo#include <linux/rtc.h> 16728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo#include <linux/proc_fs.h> 17728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo#include <linux/seq_file.h> 18728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 19ab6a2d70d18edc7a716ef3127b9e13382faec98cDavid Brownell#include "rtc-core.h" 20ab6a2d70d18edc7a716ef3127b9e13382faec98cDavid Brownell 21ab6a2d70d18edc7a716ef3127b9e13382faec98cDavid Brownell 22728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummostatic int rtc_proc_show(struct seq_file *seq, void *offset) 23728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo{ 24728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo int err; 25ab6a2d70d18edc7a716ef3127b9e13382faec98cDavid Brownell struct rtc_device *rtc = seq->private; 26ab6a2d70d18edc7a716ef3127b9e13382faec98cDavid Brownell const struct rtc_class_ops *ops = rtc->ops; 27728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo struct rtc_wkalrm alrm; 28728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo struct rtc_time tm; 29728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 30ab6a2d70d18edc7a716ef3127b9e13382faec98cDavid Brownell err = rtc_read_time(rtc, &tm); 31728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo if (err == 0) { 32728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, 33728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo "rtc_time\t: %02d:%02d:%02d\n" 34728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo "rtc_date\t: %04d-%02d-%02d\n", 35728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo tm.tm_hour, tm.tm_min, tm.tm_sec, 36728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); 37728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo } 38728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 39ab6a2d70d18edc7a716ef3127b9e13382faec98cDavid Brownell err = rtc_read_alarm(rtc, &alrm); 40728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo if (err == 0) { 41728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "alrm_time\t: "); 42728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo if ((unsigned int)alrm.time.tm_hour <= 24) 43728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "%02d:", alrm.time.tm_hour); 44728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo else 45728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "**:"); 46728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo if ((unsigned int)alrm.time.tm_min <= 59) 47728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "%02d:", alrm.time.tm_min); 48728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo else 49728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "**:"); 50728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo if ((unsigned int)alrm.time.tm_sec <= 59) 51728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "%02d\n", alrm.time.tm_sec); 52728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo else 53728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "**\n"); 54728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 55728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "alrm_date\t: "); 56728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo if ((unsigned int)alrm.time.tm_year <= 200) 57728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "%04d-", alrm.time.tm_year + 1900); 58728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo else 59728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "****-"); 60728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo if ((unsigned int)alrm.time.tm_mon <= 11) 61728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "%02d-", alrm.time.tm_mon + 1); 62728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo else 63728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "**-"); 64db621f174d2c017d960089ea8cbc91c0763f1069David Brownell if (alrm.time.tm_mday && (unsigned int)alrm.time.tm_mday <= 31) 65728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "%02d\n", alrm.time.tm_mday); 66728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo else 67728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "**\n"); 68a2db8dfce8d94fecae50128d912fec7980687a51David Brownell seq_printf(seq, "alarm_IRQ\t: %s\n", 69728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo alrm.enabled ? "yes" : "no"); 70728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo seq_printf(seq, "alrm_pending\t: %s\n", 71728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo alrm.pending ? "yes" : "no"); 72bca8521c551afcd926bdc8f814ebaefcb8215c57Marcelo Roberto Jimenez seq_printf(seq, "update IRQ enabled\t: %s\n", 73bca8521c551afcd926bdc8f814ebaefcb8215c57Marcelo Roberto Jimenez (rtc->uie_rtctimer.enabled) ? "yes" : "no"); 74bca8521c551afcd926bdc8f814ebaefcb8215c57Marcelo Roberto Jimenez seq_printf(seq, "periodic IRQ enabled\t: %s\n", 75bca8521c551afcd926bdc8f814ebaefcb8215c57Marcelo Roberto Jimenez (rtc->pie_enabled) ? "yes" : "no"); 76bca8521c551afcd926bdc8f814ebaefcb8215c57Marcelo Roberto Jimenez seq_printf(seq, "periodic IRQ frequency\t: %d\n", 77bca8521c551afcd926bdc8f814ebaefcb8215c57Marcelo Roberto Jimenez rtc->irq_freq); 78bca8521c551afcd926bdc8f814ebaefcb8215c57Marcelo Roberto Jimenez seq_printf(seq, "max user IRQ frequency\t: %d\n", 79bca8521c551afcd926bdc8f814ebaefcb8215c57Marcelo Roberto Jimenez rtc->max_user_freq); 80728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo } 81728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 82adfb4341259f2f89baac2316a8a3660b63c1103bAlessandro Zummo seq_printf(seq, "24hr\t\t: yes\n"); 83adfb4341259f2f89baac2316a8a3660b63c1103bAlessandro Zummo 84728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo if (ops->proc) 85cd9662094edf4173e87f0452e57e4eacc228f8ffDavid Brownell ops->proc(rtc->dev.parent, seq); 86728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 87728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo return 0; 88728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo} 89728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 90728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummostatic int rtc_proc_open(struct inode *inode, struct file *file) 91728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo{ 9224a6f5b8589d2abfbf523c59ab1258726edc164fAlexander Strakh int ret; 93ab6a2d70d18edc7a716ef3127b9e13382faec98cDavid Brownell struct rtc_device *rtc = PDE(inode)->data; 94728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 95728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo if (!try_module_get(THIS_MODULE)) 96728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo return -ENODEV; 97728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 9824a6f5b8589d2abfbf523c59ab1258726edc164fAlexander Strakh ret = single_open(file, rtc_proc_show, rtc); 9924a6f5b8589d2abfbf523c59ab1258726edc164fAlexander Strakh if (ret) 10024a6f5b8589d2abfbf523c59ab1258726edc164fAlexander Strakh module_put(THIS_MODULE); 10124a6f5b8589d2abfbf523c59ab1258726edc164fAlexander Strakh return ret; 102728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo} 103728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 104728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummostatic int rtc_proc_release(struct inode *inode, struct file *file) 105728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo{ 106728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo int res = single_release(inode, file); 107728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo module_put(THIS_MODULE); 108728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo return res; 109728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo} 110728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 111d54b1fdb1d9f82e375a299e22bd366aad52d4c34Arjan van de Venstatic const struct file_operations rtc_proc_fops = { 112728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo .open = rtc_proc_open, 113728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo .read = seq_read, 114728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo .llseek = seq_lseek, 115728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo .release = rtc_proc_release, 116728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo}; 117728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 1187d9f99eccc8f94ace31030a2a7ff73cf5f8c12a0David Brownellvoid rtc_proc_add_device(struct rtc_device *rtc) 119728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo{ 12099b76233803beab302123d243eea9e41149804f3Alexey Dobriyan if (rtc->id == 0) 12199b76233803beab302123d243eea9e41149804f3Alexey Dobriyan proc_create_data("driver/rtc", 0, NULL, &rtc_proc_fops, rtc); 122728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo} 123728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo 1247d9f99eccc8f94ace31030a2a7ff73cf5f8c12a0David Brownellvoid rtc_proc_del_device(struct rtc_device *rtc) 125728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo{ 1267d9f99eccc8f94ace31030a2a7ff73cf5f8c12a0David Brownell if (rtc->id == 0) 127728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo remove_proc_entry("driver/rtc", NULL); 128728a294787b780130d8eb237518d4cac0afe760cAlessandro Zummo} 129