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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright 2019 Cadence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *  Jan Kotas <jank@cadence.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/rtc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/bcd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/bitfield.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/pm_wakeirq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) /* Registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define CDNS_RTC_CTLR		0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define CDNS_RTC_HMR		0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define CDNS_RTC_TIMR		0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define CDNS_RTC_CALR		0x0C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define CDNS_RTC_TIMAR		0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define CDNS_RTC_CALAR		0x14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define CDNS_RTC_AENR		0x18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define CDNS_RTC_EFLR		0x1C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define CDNS_RTC_IENR		0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define CDNS_RTC_IDISR		0x24
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define CDNS_RTC_IMSKR		0x28
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define CDNS_RTC_STSR		0x2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define CDNS_RTC_KRTCR		0x30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) /* Control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define CDNS_RTC_CTLR_TIME	BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define CDNS_RTC_CTLR_CAL	BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define CDNS_RTC_CTLR_TIME_CAL	(CDNS_RTC_CTLR_TIME | CDNS_RTC_CTLR_CAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) /* Status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #define CDNS_RTC_STSR_VT	BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #define CDNS_RTC_STSR_VC	BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define CDNS_RTC_STSR_VTA	BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #define CDNS_RTC_STSR_VCA	BIT(3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #define CDNS_RTC_STSR_VT_VC	(CDNS_RTC_STSR_VT | CDNS_RTC_STSR_VC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define CDNS_RTC_STSR_VTA_VCA	(CDNS_RTC_STSR_VTA | CDNS_RTC_STSR_VCA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) /* Keep RTC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) #define CDNS_RTC_KRTCR_KRTC	BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) /* Alarm, Event, Interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) #define CDNS_RTC_AEI_HOS	BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) #define CDNS_RTC_AEI_SEC	BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) #define CDNS_RTC_AEI_MIN	BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) #define CDNS_RTC_AEI_HOUR	BIT(3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) #define CDNS_RTC_AEI_DATE	BIT(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) #define CDNS_RTC_AEI_MNTH	BIT(5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) #define CDNS_RTC_AEI_ALRM	BIT(6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) /* Time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) #define CDNS_RTC_TIME_H		GENMASK(7, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) #define CDNS_RTC_TIME_S		GENMASK(14, 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) #define CDNS_RTC_TIME_M		GENMASK(22, 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) #define CDNS_RTC_TIME_HR	GENMASK(29, 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) #define CDNS_RTC_TIME_PM	BIT(30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) #define CDNS_RTC_TIME_CH	BIT(31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) /* Calendar */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) #define CDNS_RTC_CAL_DAY	GENMASK(2, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) #define CDNS_RTC_CAL_M		GENMASK(7, 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) #define CDNS_RTC_CAL_D		GENMASK(13, 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) #define CDNS_RTC_CAL_Y		GENMASK(23, 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) #define CDNS_RTC_CAL_C		GENMASK(29, 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) #define CDNS_RTC_CAL_CH		BIT(31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) #define CDNS_RTC_MAX_REGS_TRIES	3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) struct cdns_rtc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	struct rtc_device *rtc_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	struct clk *pclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	struct clk *ref_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	void __iomem *regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) static void cdns_rtc_set_enabled(struct cdns_rtc *crtc, bool enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	u32 reg = enabled ? 0x0 : CDNS_RTC_CTLR_TIME_CAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	writel(reg, crtc->regs + CDNS_RTC_CTLR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) static bool cdns_rtc_get_enabled(struct cdns_rtc *crtc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	return !(readl(crtc->regs + CDNS_RTC_CTLR) & CDNS_RTC_CTLR_TIME_CAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) static irqreturn_t cdns_rtc_irq_handler(int irq, void *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	struct device *dev = id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	/* Reading the register clears it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	if (!(readl(crtc->regs + CDNS_RTC_EFLR) & CDNS_RTC_AEI_ALRM))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		return IRQ_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	rtc_update_irq(crtc->rtc_dev, 1, RTC_IRQF | RTC_AF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static u32 cdns_rtc_time2reg(struct rtc_time *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	return FIELD_PREP(CDNS_RTC_TIME_S,  bin2bcd(tm->tm_sec))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	     | FIELD_PREP(CDNS_RTC_TIME_M,  bin2bcd(tm->tm_min))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	     | FIELD_PREP(CDNS_RTC_TIME_HR, bin2bcd(tm->tm_hour));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static void cdns_rtc_reg2time(u32 reg, struct rtc_time *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	tm->tm_sec  = bcd2bin(FIELD_GET(CDNS_RTC_TIME_S, reg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	tm->tm_min  = bcd2bin(FIELD_GET(CDNS_RTC_TIME_M, reg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	tm->tm_hour = bcd2bin(FIELD_GET(CDNS_RTC_TIME_HR, reg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static int cdns_rtc_read_time(struct device *dev, struct rtc_time *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	u32 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	/* If the RTC is disabled, assume the values are invalid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	if (!cdns_rtc_get_enabled(crtc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	cdns_rtc_set_enabled(crtc, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	reg = readl(crtc->regs + CDNS_RTC_TIMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	cdns_rtc_reg2time(reg, tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	reg = readl(crtc->regs + CDNS_RTC_CALR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	tm->tm_mday = bcd2bin(FIELD_GET(CDNS_RTC_CAL_D, reg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	tm->tm_mon  = bcd2bin(FIELD_GET(CDNS_RTC_CAL_M, reg)) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	tm->tm_year = bcd2bin(FIELD_GET(CDNS_RTC_CAL_Y, reg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		    + bcd2bin(FIELD_GET(CDNS_RTC_CAL_C, reg)) * 100 - 1900;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	tm->tm_wday = bcd2bin(FIELD_GET(CDNS_RTC_CAL_DAY, reg)) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	cdns_rtc_set_enabled(crtc, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	return 0;
^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 int cdns_rtc_set_time(struct device *dev, struct rtc_time *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	u32 timr, calr, stsr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	int ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	int year = tm->tm_year + 1900;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	int tries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	cdns_rtc_set_enabled(crtc, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	timr = cdns_rtc_time2reg(tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	calr = FIELD_PREP(CDNS_RTC_CAL_D, bin2bcd(tm->tm_mday))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	     | FIELD_PREP(CDNS_RTC_CAL_M, bin2bcd(tm->tm_mon + 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	     | FIELD_PREP(CDNS_RTC_CAL_Y, bin2bcd(year % 100))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	     | FIELD_PREP(CDNS_RTC_CAL_C, bin2bcd(year / 100))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	     | FIELD_PREP(CDNS_RTC_CAL_DAY, tm->tm_wday + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	/* Update registers, check valid flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	for (tries = 0; tries < CDNS_RTC_MAX_REGS_TRIES; tries++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		writel(timr, crtc->regs + CDNS_RTC_TIMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		writel(calr, crtc->regs + CDNS_RTC_CALR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		stsr = readl(crtc->regs + CDNS_RTC_STSR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		if ((stsr & CDNS_RTC_STSR_VT_VC) == CDNS_RTC_STSR_VT_VC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 			ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	cdns_rtc_set_enabled(crtc, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static int cdns_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	if (enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		writel((CDNS_RTC_AEI_SEC | CDNS_RTC_AEI_MIN | CDNS_RTC_AEI_HOUR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 			| CDNS_RTC_AEI_DATE | CDNS_RTC_AEI_MNTH),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		       crtc->regs + CDNS_RTC_AENR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		writel(CDNS_RTC_AEI_ALRM, crtc->regs + CDNS_RTC_IENR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		writel(0, crtc->regs + CDNS_RTC_AENR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		writel(CDNS_RTC_AEI_ALRM, crtc->regs + CDNS_RTC_IDISR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) static int cdns_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	u32 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	reg = readl(crtc->regs + CDNS_RTC_TIMAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	cdns_rtc_reg2time(reg, &alarm->time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	reg = readl(crtc->regs + CDNS_RTC_CALAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	alarm->time.tm_mday = bcd2bin(FIELD_GET(CDNS_RTC_CAL_D, reg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	alarm->time.tm_mon  = bcd2bin(FIELD_GET(CDNS_RTC_CAL_M, reg)) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) static int cdns_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	int ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	int tries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	u32 timar, calar, stsr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	cdns_rtc_alarm_irq_enable(dev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	timar = cdns_rtc_time2reg(&alarm->time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	calar = FIELD_PREP(CDNS_RTC_CAL_D, bin2bcd(alarm->time.tm_mday))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	      | FIELD_PREP(CDNS_RTC_CAL_M, bin2bcd(alarm->time.tm_mon + 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	/* Update registers, check valid alarm flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	for (tries = 0; tries < CDNS_RTC_MAX_REGS_TRIES; tries++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		writel(timar, crtc->regs + CDNS_RTC_TIMAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		writel(calar, crtc->regs + CDNS_RTC_CALAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		stsr = readl(crtc->regs + CDNS_RTC_STSR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		if ((stsr & CDNS_RTC_STSR_VTA_VCA) == CDNS_RTC_STSR_VTA_VCA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 			ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		cdns_rtc_alarm_irq_enable(dev, alarm->enabled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static const struct rtc_class_ops cdns_rtc_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	.read_time	= cdns_rtc_read_time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	.set_time	= cdns_rtc_set_time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	.read_alarm	= cdns_rtc_read_alarm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	.set_alarm	= cdns_rtc_set_alarm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	.alarm_irq_enable = cdns_rtc_alarm_irq_enable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static int cdns_rtc_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	struct cdns_rtc *crtc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	unsigned long ref_clk_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	crtc = devm_kzalloc(&pdev->dev, sizeof(*crtc), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	if (!crtc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	crtc->regs = devm_platform_ioremap_resource(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	if (IS_ERR(crtc->regs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		return PTR_ERR(crtc->regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	crtc->irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	if (crtc->irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	crtc->pclk = devm_clk_get(&pdev->dev, "pclk");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	if (IS_ERR(crtc->pclk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		ret = PTR_ERR(crtc->pclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 			"Failed to retrieve the peripheral clock, %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	crtc->ref_clk = devm_clk_get(&pdev->dev, "ref_clk");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	if (IS_ERR(crtc->ref_clk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 		ret = PTR_ERR(crtc->ref_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 		dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 			"Failed to retrieve the reference clock, %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	crtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	if (IS_ERR(crtc->rtc_dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 		return PTR_ERR(crtc->rtc_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	platform_set_drvdata(pdev, crtc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	ret = clk_prepare_enable(crtc->pclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 		dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 			"Failed to enable the peripheral clock, %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	ret = clk_prepare_enable(crtc->ref_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 			"Failed to enable the reference clock, %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 		goto err_disable_pclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	ref_clk_freq = clk_get_rate(crtc->ref_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	if ((ref_clk_freq != 1) && (ref_clk_freq != 100)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 			"Invalid reference clock frequency %lu Hz.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 			ref_clk_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 		goto err_disable_ref_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	ret = devm_request_irq(&pdev->dev, crtc->irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 			       cdns_rtc_irq_handler, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 			       dev_name(&pdev->dev), &pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 		dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 			"Failed to request interrupt for the device, %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 			ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 		goto err_disable_ref_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	/* The RTC supports 01.01.1900 - 31.12.2999 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	crtc->rtc_dev->range_min = mktime64(1900,  1,  1,  0,  0,  0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	crtc->rtc_dev->range_max = mktime64(2999, 12, 31, 23, 59, 59);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	crtc->rtc_dev->ops = &cdns_rtc_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	device_init_wakeup(&pdev->dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	/* Always use 24-hour mode and keep the RTC values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	writel(0, crtc->regs + CDNS_RTC_HMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	writel(CDNS_RTC_KRTCR_KRTC, crtc->regs + CDNS_RTC_KRTCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	ret = rtc_register_device(crtc->rtc_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		goto err_disable_wakeup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) err_disable_wakeup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	device_init_wakeup(&pdev->dev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) err_disable_ref_clk:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	clk_disable_unprepare(crtc->ref_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) err_disable_pclk:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	clk_disable_unprepare(crtc->pclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) static int cdns_rtc_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	struct cdns_rtc *crtc = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 	cdns_rtc_alarm_irq_enable(&pdev->dev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	device_init_wakeup(&pdev->dev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	clk_disable_unprepare(crtc->pclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	clk_disable_unprepare(crtc->ref_clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) static int cdns_rtc_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 		enable_irq_wake(crtc->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) static int cdns_rtc_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 		disable_irq_wake(crtc->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) static SIMPLE_DEV_PM_OPS(cdns_rtc_pm_ops, cdns_rtc_suspend, cdns_rtc_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static const struct of_device_id cdns_rtc_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	{ .compatible = "cdns,rtc-r109v3" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) MODULE_DEVICE_TABLE(of, cdns_rtc_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) static struct platform_driver cdns_rtc_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		.name = "cdns-rtc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 		.of_match_table = cdns_rtc_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 		.pm = &cdns_rtc_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	.probe = cdns_rtc_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 	.remove = cdns_rtc_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) module_platform_driver(cdns_rtc_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) MODULE_AUTHOR("Jan Kotas <jank@cadence.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) MODULE_DESCRIPTION("Cadence RTC driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) MODULE_ALIAS("platform:cdns-rtc");