^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * rtc-as3722.c - Real Time Clock driver for ams AS3722 PMICs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2013 ams AG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2013, NVIDIA Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Author: Florian Lobmaier <florian.lobmaier@ams.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Author: Laxman Dewangan <ldewangan@nvidia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/bcd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/mfd/as3722.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/rtc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define AS3722_RTC_START_YEAR 2000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct as3722_rtc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct rtc_device *rtc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct as3722 *as3722;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) int alarm_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) bool irq_enable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static void as3722_time_to_reg(u8 *rbuff, struct rtc_time *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) rbuff[0] = bin2bcd(tm->tm_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) rbuff[1] = bin2bcd(tm->tm_min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) rbuff[2] = bin2bcd(tm->tm_hour);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) rbuff[3] = bin2bcd(tm->tm_mday);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) rbuff[4] = bin2bcd(tm->tm_mon + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) rbuff[5] = bin2bcd(tm->tm_year - (AS3722_RTC_START_YEAR - 1900));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static void as3722_reg_to_time(u8 *rbuff, struct rtc_time *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) tm->tm_sec = bcd2bin(rbuff[0] & 0x7F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) tm->tm_min = bcd2bin(rbuff[1] & 0x7F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) tm->tm_hour = bcd2bin(rbuff[2] & 0x3F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) tm->tm_mday = bcd2bin(rbuff[3] & 0x3F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) tm->tm_mon = bcd2bin(rbuff[4] & 0x1F) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) tm->tm_year = (AS3722_RTC_START_YEAR - 1900) + bcd2bin(rbuff[5] & 0x7F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static int as3722_rtc_read_time(struct device *dev, struct rtc_time *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct as3722 *as3722 = as3722_rtc->as3722;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) u8 as_time_array[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) ret = as3722_block_read(as3722, AS3722_RTC_SECOND_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 6, as_time_array);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) dev_err(dev, "RTC_SECOND reg block read failed %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) as3722_reg_to_time(as_time_array, tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) static int as3722_rtc_set_time(struct device *dev, struct rtc_time *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct as3722 *as3722 = as3722_rtc->as3722;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) u8 as_time_array[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (tm->tm_year < (AS3722_RTC_START_YEAR - 1900))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) as3722_time_to_reg(as_time_array, tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) ret = as3722_block_write(as3722, AS3722_RTC_SECOND_REG, 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) as_time_array);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) dev_err(dev, "RTC_SECOND reg block write failed %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static int as3722_rtc_alarm_irq_enable(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) unsigned int enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (enabled && !as3722_rtc->irq_enable) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) enable_irq(as3722_rtc->alarm_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) as3722_rtc->irq_enable = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) } else if (!enabled && as3722_rtc->irq_enable) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) disable_irq(as3722_rtc->alarm_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) as3722_rtc->irq_enable = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int as3722_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct as3722 *as3722 = as3722_rtc->as3722;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) u8 as_time_array[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) ret = as3722_block_read(as3722, AS3722_RTC_ALARM_SECOND_REG, 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) as_time_array);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) dev_err(dev, "RTC_ALARM_SECOND block read failed %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) as3722_reg_to_time(as_time_array, &alrm->time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int as3722_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct as3722 *as3722 = as3722_rtc->as3722;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) u8 as_time_array[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (alrm->time.tm_year < (AS3722_RTC_START_YEAR - 1900))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ret = as3722_rtc_alarm_irq_enable(dev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) dev_err(dev, "Disable RTC alarm failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) as3722_time_to_reg(as_time_array, &alrm->time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) ret = as3722_block_write(as3722, AS3722_RTC_ALARM_SECOND_REG, 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) as_time_array);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) dev_err(dev, "RTC_ALARM_SECOND block write failed %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (alrm->enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) ret = as3722_rtc_alarm_irq_enable(dev, alrm->enabled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static irqreturn_t as3722_alarm_irq(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct as3722_rtc *as3722_rtc = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) rtc_update_irq(as3722_rtc->rtc, 1, RTC_IRQF | RTC_AF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static const struct rtc_class_ops as3722_rtc_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .read_time = as3722_rtc_read_time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) .set_time = as3722_rtc_set_time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .read_alarm = as3722_rtc_read_alarm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .set_alarm = as3722_rtc_set_alarm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .alarm_irq_enable = as3722_rtc_alarm_irq_enable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static int as3722_rtc_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct as3722_rtc *as3722_rtc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) as3722_rtc = devm_kzalloc(&pdev->dev, sizeof(*as3722_rtc), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if (!as3722_rtc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) as3722_rtc->as3722 = as3722;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) as3722_rtc->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) platform_set_drvdata(pdev, as3722_rtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /* Enable the RTC to make sure it is running. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) ret = as3722_update_bits(as3722, AS3722_RTC_CONTROL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) AS3722_RTC_ON | AS3722_RTC_ALARM_WAKEUP_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) AS3722_RTC_ON | AS3722_RTC_ALARM_WAKEUP_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) dev_err(&pdev->dev, "RTC_CONTROL reg write failed: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) device_init_wakeup(&pdev->dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) as3722_rtc->rtc = devm_rtc_device_register(&pdev->dev, "as3722-rtc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) &as3722_rtc_ops, THIS_MODULE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (IS_ERR(as3722_rtc->rtc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) ret = PTR_ERR(as3722_rtc->rtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) dev_err(&pdev->dev, "RTC register failed: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) as3722_rtc->alarm_irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) dev_info(&pdev->dev, "RTC interrupt %d\n", as3722_rtc->alarm_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) ret = devm_request_threaded_irq(&pdev->dev, as3722_rtc->alarm_irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) as3722_alarm_irq, IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) "rtc-alarm", as3722_rtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) as3722_rtc->alarm_irq, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) disable_irq(as3722_rtc->alarm_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static int as3722_rtc_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) enable_irq_wake(as3722_rtc->alarm_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static int as3722_rtc_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) struct as3722_rtc *as3722_rtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) disable_irq_wake(as3722_rtc->alarm_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static SIMPLE_DEV_PM_OPS(as3722_rtc_pm_ops, as3722_rtc_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) as3722_rtc_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static struct platform_driver as3722_rtc_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) .probe = as3722_rtc_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) .name = "as3722-rtc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) .pm = &as3722_rtc_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) module_platform_driver(as3722_rtc_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) MODULE_DESCRIPTION("RTC driver for AS3722 PMICs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) MODULE_ALIAS("platform:as3722-rtc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) MODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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