1b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan/* 2b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * rtc-as3722.c - Real Time Clock driver for ams AS3722 PMICs 3b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * 4b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * Copyright (C) 2013 ams AG 5b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * Copyright (c) 2013, NVIDIA Corporation. All rights reserved. 6b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * 7b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * Author: Florian Lobmaier <florian.lobmaier@ams.com> 8b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * Author: Laxman Dewangan <ldewangan@nvidia.com> 9b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * 10b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * This program is free software; you can redistribute it and/or modify 11b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * it under the terms of the GNU General Public License as published by 12b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * the Free Software Foundation; either version 2 of the License, or 13b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * (at your option) any later version. 14b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * 15b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * This program is distributed in the hope that it will be useful, 16b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * but WITHOUT ANY WARRANTY; without even the implied warranty of 17b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan * GNU General Public License for more details. 19b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan */ 20b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 21b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/bcd.h> 22b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/completion.h> 23b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/delay.h> 24b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/interrupt.h> 25b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/ioctl.h> 26b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/kernel.h> 27b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/module.h> 28b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/mfd/as3722.h> 29b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/platform_device.h> 30b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/rtc.h> 31b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#include <linux/time.h> 32b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 33b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#define AS3722_RTC_START_YEAR 2000 34b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstruct as3722_rtc { 35b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct rtc_device *rtc; 36b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct device *dev; 37b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722 *as3722; 38b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan int alarm_irq; 39b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan bool irq_enable; 40b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan}; 41b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 42b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic void as3722_time_to_reg(u8 *rbuff, struct rtc_time *tm) 43b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 44b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan rbuff[0] = bin2bcd(tm->tm_sec); 45b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan rbuff[1] = bin2bcd(tm->tm_min); 46b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan rbuff[2] = bin2bcd(tm->tm_hour); 47b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan rbuff[3] = bin2bcd(tm->tm_mday); 48b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan rbuff[4] = bin2bcd(tm->tm_mon); 49b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan rbuff[5] = bin2bcd(tm->tm_year - (AS3722_RTC_START_YEAR - 1900)); 50b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 51b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 52b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic void as3722_reg_to_time(u8 *rbuff, struct rtc_time *tm) 53b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 54b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan tm->tm_sec = bcd2bin(rbuff[0] & 0x7F); 55b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan tm->tm_min = bcd2bin(rbuff[1] & 0x7F); 56b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan tm->tm_hour = bcd2bin(rbuff[2] & 0x3F); 57b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan tm->tm_mday = bcd2bin(rbuff[3] & 0x3F); 58b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan tm->tm_mon = bcd2bin(rbuff[4] & 0x1F); 59b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan tm->tm_year = (AS3722_RTC_START_YEAR - 1900) + bcd2bin(rbuff[5] & 0x7F); 60b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return; 61b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 62b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 63b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic int as3722_rtc_read_time(struct device *dev, struct rtc_time *tm) 64b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 65b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev); 66b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722 *as3722 = as3722_rtc->as3722; 67b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan u8 as_time_array[6]; 68b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan int ret; 69b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 70b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan ret = as3722_block_read(as3722, AS3722_RTC_SECOND_REG, 71b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 6, as_time_array); 72b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (ret < 0) { 73b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan dev_err(dev, "RTC_SECOND reg block read failed %d\n", ret); 74b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return ret; 75b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan } 76b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_reg_to_time(as_time_array, tm); 77b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return 0; 78b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 79b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 80b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic int as3722_rtc_set_time(struct device *dev, struct rtc_time *tm) 81b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 82b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev); 83b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722 *as3722 = as3722_rtc->as3722; 84b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan u8 as_time_array[6]; 85b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan int ret; 86b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 87b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (tm->tm_year < (AS3722_RTC_START_YEAR - 1900)) 88b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return -EINVAL; 89b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 90b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_time_to_reg(as_time_array, tm); 91b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan ret = as3722_block_write(as3722, AS3722_RTC_SECOND_REG, 6, 92b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as_time_array); 93b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (ret < 0) 94b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan dev_err(dev, "RTC_SECOND reg block write failed %d\n", ret); 95b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return ret; 96b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 97b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 98b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic int as3722_rtc_alarm_irq_enable(struct device *dev, 99b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan unsigned int enabled) 100b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 101b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev); 102b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 103b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (enabled && !as3722_rtc->irq_enable) { 104b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan enable_irq(as3722_rtc->alarm_irq); 105b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_rtc->irq_enable = true; 106b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan } else if (!enabled && as3722_rtc->irq_enable) { 107b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan disable_irq(as3722_rtc->alarm_irq); 108b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_rtc->irq_enable = false; 109b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan } 110b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return 0; 111b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 112b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 113b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic int as3722_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) 114b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 115b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev); 116b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722 *as3722 = as3722_rtc->as3722; 117b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan u8 as_time_array[6]; 118b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan int ret; 119b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 120b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan ret = as3722_block_read(as3722, AS3722_RTC_ALARM_SECOND_REG, 6, 121b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as_time_array); 122b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (ret < 0) { 123b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan dev_err(dev, "RTC_ALARM_SECOND block read failed %d\n", ret); 124b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return ret; 125b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan } 126b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 127b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_reg_to_time(as_time_array, &alrm->time); 128b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return 0; 129b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 130b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 131b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic int as3722_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 132b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 133b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev); 134b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722 *as3722 = as3722_rtc->as3722; 135b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan u8 as_time_array[6]; 136b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan int ret; 137b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 138b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (alrm->time.tm_year < (AS3722_RTC_START_YEAR - 1900)) 139b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return -EINVAL; 140b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 141b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan ret = as3722_rtc_alarm_irq_enable(dev, 0); 142b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (ret < 0) { 143b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan dev_err(dev, "Disable RTC alarm failed\n"); 144b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return ret; 145b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan } 146b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 147b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_time_to_reg(as_time_array, &alrm->time); 148b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan ret = as3722_block_write(as3722, AS3722_RTC_ALARM_SECOND_REG, 6, 149b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as_time_array); 150b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (ret < 0) { 151b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan dev_err(dev, "RTC_ALARM_SECOND block write failed %d\n", ret); 152b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return ret; 153b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan } 154b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 155b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (alrm->enabled) 156b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan ret = as3722_rtc_alarm_irq_enable(dev, alrm->enabled); 157b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return ret; 158b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 159b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 160b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic irqreturn_t as3722_alarm_irq(int irq, void *data) 161b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 162b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722_rtc *as3722_rtc = data; 163b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 164b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan rtc_update_irq(as3722_rtc->rtc, 1, RTC_IRQF | RTC_AF); 165b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return IRQ_HANDLED; 166b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 167b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 168b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic const struct rtc_class_ops as3722_rtc_ops = { 169b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan .read_time = as3722_rtc_read_time, 170b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan .set_time = as3722_rtc_set_time, 171b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan .read_alarm = as3722_rtc_read_alarm, 172b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan .set_alarm = as3722_rtc_set_alarm, 173b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan .alarm_irq_enable = as3722_rtc_alarm_irq_enable, 174b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan}; 175b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 176b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic int as3722_rtc_probe(struct platform_device *pdev) 177b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 178b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent); 179b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722_rtc *as3722_rtc; 180b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan int ret; 181b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 182b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_rtc = devm_kzalloc(&pdev->dev, sizeof(*as3722_rtc), GFP_KERNEL); 183b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (!as3722_rtc) 184b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return -ENOMEM; 185b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 186b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_rtc->as3722 = as3722; 187b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_rtc->dev = &pdev->dev; 188b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan platform_set_drvdata(pdev, as3722_rtc); 189b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 190b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan /* Enable the RTC to make sure it is running. */ 191b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan ret = as3722_update_bits(as3722, AS3722_RTC_CONTROL_REG, 192b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan AS3722_RTC_ON | AS3722_RTC_ALARM_WAKEUP_EN, 193b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan AS3722_RTC_ON | AS3722_RTC_ALARM_WAKEUP_EN); 194b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (ret < 0) { 195b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan dev_err(&pdev->dev, "RTC_CONTROL reg write failed: %d\n", ret); 196b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return ret; 197b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan } 198b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 199b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan device_init_wakeup(&pdev->dev, 1); 200b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 20175465c49f092f24acc236b0f51e9b8bf8adc329eLaxman Dewangan as3722_rtc->rtc = devm_rtc_device_register(&pdev->dev, "as3722-rtc", 202b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan &as3722_rtc_ops, THIS_MODULE); 203b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (IS_ERR(as3722_rtc->rtc)) { 204b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan ret = PTR_ERR(as3722_rtc->rtc); 205b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan dev_err(&pdev->dev, "RTC register failed: %d\n", ret); 206b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return ret; 207b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan } 208b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 209b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_rtc->alarm_irq = platform_get_irq(pdev, 0); 210b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan dev_info(&pdev->dev, "RTC interrupt %d\n", as3722_rtc->alarm_irq); 211b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 21275465c49f092f24acc236b0f51e9b8bf8adc329eLaxman Dewangan ret = devm_request_threaded_irq(&pdev->dev, as3722_rtc->alarm_irq, NULL, 213b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_alarm_irq, IRQF_ONESHOT | IRQF_EARLY_RESUME, 214b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan "rtc-alarm", as3722_rtc); 215b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (ret < 0) { 216b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n", 217b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan as3722_rtc->alarm_irq, ret); 21875465c49f092f24acc236b0f51e9b8bf8adc329eLaxman Dewangan return ret; 219b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan } 220b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan disable_irq(as3722_rtc->alarm_irq); 221b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return 0; 222b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 223b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 224b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#ifdef CONFIG_PM_SLEEP 225b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic int as3722_rtc_suspend(struct device *dev) 226b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 227b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev); 228b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 229b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (device_may_wakeup(dev)) 230b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan enable_irq_wake(as3722_rtc->alarm_irq); 231b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 232b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return 0; 233b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 234b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 235b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic int as3722_rtc_resume(struct device *dev) 236b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan{ 237b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev); 238b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 239b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan if (device_may_wakeup(dev)) 240b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan disable_irq_wake(as3722_rtc->alarm_irq); 241b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan return 0; 242b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan} 243b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan#endif 244b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 245d55255cb11ca2220d09c2a08adee7ca3e14e0ba1Jingoo Hanstatic SIMPLE_DEV_PM_OPS(as3722_rtc_pm_ops, as3722_rtc_suspend, 246d55255cb11ca2220d09c2a08adee7ca3e14e0ba1Jingoo Han as3722_rtc_resume); 247b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 248b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganstatic struct platform_driver as3722_rtc_driver = { 249b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan .probe = as3722_rtc_probe, 250b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan .driver = { 251b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan .name = "as3722-rtc", 252b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan .pm = &as3722_rtc_pm_ops, 253b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan }, 254b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan}; 255b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewanganmodule_platform_driver(as3722_rtc_driver); 256b45062619840a56c090bab57df7b0fb36a30c2afLaxman Dewangan 257b45062619840a56c090bab57df7b0fb36a30c2afLaxman DewanganMODULE_DESCRIPTION("RTC driver for AS3722 PMICs"); 258b45062619840a56c090bab57df7b0fb36a30c2afLaxman DewanganMODULE_ALIAS("platform:as3722-rtc"); 259b45062619840a56c090bab57df7b0fb36a30c2afLaxman DewanganMODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>"); 260b45062619840a56c090bab57df7b0fb36a30c2afLaxman DewanganMODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>"); 261b45062619840a56c090bab57df7b0fb36a30c2afLaxman DewanganMODULE_LICENSE("GPL"); 262