3  * Driver for the RTC found in the SpacemiT P1 PMIC
15 #define MOD_NAME	"spacemit-p1-rtc"
18  * Six consecutive 1-byte registers hold the seconds, minutes, hours,
25  *    day	0-30 (struct tm is 1-31)
38 #define RTC_READ_TRIES		20	/* At least 1 */
46  * The P1 hardware documentation states that the register values are
53 	struct p1_rtc *p1 = dev_get_drvdata(dev);  in p1_rtc_read_time()  local
54 	struct regmap *regmap = p1->regmap;  in p1_rtc_read_time()
78 	t->tm_min = time[1] & GENMASK(5, 0);  in p1_rtc_read_time()
80 	t->tm_mday = (time[3] & GENMASK(4, 0)) + 1;  in p1_rtc_read_time()
88  * The P1 hardware documentation states that values in the registers are
95 	struct p1_rtc *p1 = dev_get_drvdata(dev);  in p1_rtc_set_time()  local
96 	struct regmap *regmap = p1->regmap;  in p1_rtc_set_time()
101 	time[1] = t->tm_min;  in p1_rtc_set_time()
103 	time[3] = t->tm_mday - 1;  in p1_rtc_set_time()
129 	struct p1_rtc *p1;  in p1_rtc_probe()  local
131 	p1 = devm_kzalloc(dev, sizeof(*p1), GFP_KERNEL);  in p1_rtc_probe()
132 	if (!p1)  in p1_rtc_probe()
134 	dev_set_drvdata(dev, p1);  in p1_rtc_probe()
136 	p1->regmap = dev_get_regmap(dev->parent, NULL);  in p1_rtc_probe()
137 	if (!p1->regmap)  in p1_rtc_probe()
144 	p1->rtc = rtc;  in p1_rtc_probe()
165 MODULE_DESCRIPTION("SpacemiT P1 RTC driver");