1 // SPDX-License-Identifier: GPL-2.0+
5  * Based on a the Linux rtc-rv3029c2.c driver written by:
6  *   Gregory Hermant <gregory.hermant@calao-systems.com>
83 		return -EIO;  in rv3029_rtc_get()
86 	tm->tm_sec = bcd2bin(regs[RV3029_W_SEC - RV3029_W_SEC]);  in rv3029_rtc_get()
87 	tm->tm_min = bcd2bin(regs[RV3029_W_MINUTES - RV3029_W_SEC]);  in rv3029_rtc_get()
91 		const u8 _hr = regs[RV3029_W_HOURS - RV3029_W_SEC];  in rv3029_rtc_get()
95 			tm->tm_hour = bcd2bin(_hr & 0x1f);  in rv3029_rtc_get()
97 				tm->tm_hour += 12;  in rv3029_rtc_get()
100 			tm->tm_hour = bcd2bin(_hr & 0x3f);  in rv3029_rtc_get()
104 	tm->tm_mday = bcd2bin(regs[RV3029_W_DATE - RV3029_W_SEC]);  in rv3029_rtc_get()
105 	tm->tm_mon = bcd2bin(regs[RV3029_W_MONTHS - RV3029_W_SEC]) - 1;  in rv3029_rtc_get()
107 	tm->tm_year = bcd2bin(regs[RV3029_W_YEARS - RV3029_W_SEC]) + 2000;  in rv3029_rtc_get()
108 	tm->tm_wday = bcd2bin(regs[RV3029_W_DAYS - RV3029_W_SEC]) - 1;  in rv3029_rtc_get()
110 	tm->tm_yday = 0;  in rv3029_rtc_get()
111 	tm->tm_isdst = 0;  in rv3029_rtc_get()
113 	debug("%s: %4d-%02d-%02d (wday=%d) %2d:%02d:%02d\n",  in rv3029_rtc_get()
114 	      __func__, tm->tm_year, tm->tm_mon, tm->tm_mday,  in rv3029_rtc_get()
115 	      tm->tm_wday, tm->tm_hour, tm->tm_min, tm->tm_sec);  in rv3029_rtc_get()
124 	debug("%s: %4d-%02d-%02d (wday=%d( %2d:%02d:%02d\n",  in rv3029_rtc_set()
125 	      __func__, tm->tm_year, tm->tm_mon, tm->tm_mday,  in rv3029_rtc_set()
126 	      tm->tm_wday, tm->tm_hour, tm->tm_min, tm->tm_sec);  in rv3029_rtc_set()
129 	if (tm->tm_year < 2000) {  in rv3029_rtc_set()
131 		       __func__, tm->tm_year);  in rv3029_rtc_set()
132 		return -EINVAL;  in rv3029_rtc_set()
135 	regs[RV3029_W_SEC - RV3029_W_SEC] = bin2bcd(tm->tm_sec);  in rv3029_rtc_set()
136 	regs[RV3029_W_MINUTES - RV3029_W_SEC] = bin2bcd(tm->tm_min);  in rv3029_rtc_set()
137 	regs[RV3029_W_HOURS - RV3029_W_SEC] = bin2bcd(tm->tm_hour);  in rv3029_rtc_set()
138 	regs[RV3029_W_DATE - RV3029_W_SEC] = bin2bcd(tm->tm_mday);  in rv3029_rtc_set()
139 	regs[RV3029_W_MONTHS - RV3029_W_SEC] = bin2bcd(tm->tm_mon + 1);  in rv3029_rtc_set()
140 	regs[RV3029_W_DAYS - RV3029_W_SEC] = bin2bcd(tm->tm_wday + 1) & 0x7;  in rv3029_rtc_set()
141 	regs[RV3029_W_YEARS - RV3029_W_SEC] = bin2bcd(tm->tm_year - 2000);  in rv3029_rtc_set()
153 	/* trigger the system-reset */  in rv3029_rtc_reset()
156 		return -EIO;  in rv3029_rtc_reset()
158 	/* wait for the system-reset to complete */  in rv3029_rtc_reset()
162 			return -ETIMEDOUT;  in rv3029_rtc_reset()
166 			return -EIO;  in rv3029_rtc_reset()
194 		return -EIO;  in rv3029_get_sr()
206 		return -EIO;  in rv3029_set_sr()
217 	for (i = 100; i > 0; i--) {  in rv3029_eeprom_busywait()
227 		return -ETIMEDOUT;  in rv3029_eeprom_busywait()
255 	/* Re-enable eeprom refresh */  in rv3029_eeprom_exit()
285 			return -ENODEV;  in rv3029_eeprom_enter()
381 		u32 r;		/* resistance in ohms */  in rv3029_trickle_config()
382 		u8 conf;	/* trickle config bits */  in rv3029_trickle_config()
437 	u32 ohms;  in rv3029_trickle_config()  local
440 	/* Configure the trickle charger. */  in rv3029_trickle_config()
441 	err = dev_read_u32(dev, "trickle-resistor-ohms", &ohms);  in rv3029_trickle_config()
444 		/* Find trickle-charger config */  in rv3029_trickle_config()
446 			if (rv3029_trickle_tab[i].r >= ohms) {  in rv3029_trickle_config()
447 				dev_dbg(dev, "trickle charger at %d ohms\n",  in rv3029_trickle_config()
454 	dev_dbg(dev, "trickle charger config 0x%x\n", trickle_set_bits);  in rv3029_trickle_config()
459 		dev_dbg(dev, "failed to update trickle charger\n");  in rv3029_trickle_config()
491 	.name	= "rtc-rv3029",