diff options
Diffstat (limited to 'drivers/rtc/rtc-rzn1.c')
| -rw-r--r-- | drivers/rtc/rtc-rzn1.c | 92 |
1 files changed, 34 insertions, 58 deletions
diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c index 56ebbd4d0481..cb220807d925 100644 --- a/drivers/rtc/rtc-rzn1.c +++ b/drivers/rtc/rtc-rzn1.c @@ -7,7 +7,7 @@ * - 2022 Schneider Electric * * Authors: - * - Michel Pollet <michel.pollet@bp.renesas.com>, <buserror@gmail.com> + * - Michel Pollet <buserror@gmail.com> * - Miquel Raynal <miquel.raynal@bootlin.com> */ @@ -35,13 +35,13 @@ #define RZN1_RTC_CTL2_WUST BIT(5) #define RZN1_RTC_CTL2_STOPPED (RZN1_RTC_CTL2_WAIT | RZN1_RTC_CTL2_WST) -#define RZN1_RTC_SEC 0x14 -#define RZN1_RTC_MIN 0x18 -#define RZN1_RTC_HOUR 0x1c -#define RZN1_RTC_WEEK 0x20 -#define RZN1_RTC_DAY 0x24 -#define RZN1_RTC_MONTH 0x28 -#define RZN1_RTC_YEAR 0x2c +#define RZN1_RTC_TIME 0x30 +#define RZN1_RTC_TIME_MIN_SHIFT 8 +#define RZN1_RTC_TIME_HOUR_SHIFT 16 +#define RZN1_RTC_CAL 0x34 +#define RZN1_RTC_CAL_DAY_SHIFT 8 +#define RZN1_RTC_CAL_MON_SHIFT 16 +#define RZN1_RTC_CAL_YEAR_SHIFT 24 #define RZN1_RTC_SUBU 0x38 #define RZN1_RTC_SUBU_DEV BIT(7) @@ -52,12 +52,8 @@ #define RZN1_RTC_ALW 0x48 #define RZN1_RTC_SECC 0x4c -#define RZN1_RTC_MINC 0x50 -#define RZN1_RTC_HOURC 0x54 -#define RZN1_RTC_WEEKC 0x58 -#define RZN1_RTC_DAYC 0x5c -#define RZN1_RTC_MONTHC 0x60 -#define RZN1_RTC_YEARC 0x64 +#define RZN1_RTC_TIMEC 0x68 +#define RZN1_RTC_CALC 0x6c struct rzn1_rtc { struct rtc_device *rtcdev; @@ -66,26 +62,18 @@ struct rzn1_rtc { static void rzn1_rtc_get_time_snapshot(struct rzn1_rtc *rtc, struct rtc_time *tm) { - tm->tm_sec = readl(rtc->base + RZN1_RTC_SECC); - tm->tm_min = readl(rtc->base + RZN1_RTC_MINC); - tm->tm_hour = readl(rtc->base + RZN1_RTC_HOURC); - tm->tm_wday = readl(rtc->base + RZN1_RTC_WEEKC); - tm->tm_mday = readl(rtc->base + RZN1_RTC_DAYC); - tm->tm_mon = readl(rtc->base + RZN1_RTC_MONTHC); - tm->tm_year = readl(rtc->base + RZN1_RTC_YEARC); -} - -static unsigned int rzn1_rtc_tm_to_wday(struct rtc_time *tm) -{ - time64_t time; - unsigned int days; - u32 secs; + u32 val; - time = rtc_tm_to_time64(tm); - days = div_s64_rem(time, 86400, &secs); + val = readl(rtc->base + RZN1_RTC_TIMEC); + tm->tm_sec = bcd2bin(val); + tm->tm_min = bcd2bin(val >> RZN1_RTC_TIME_MIN_SHIFT); + tm->tm_hour = bcd2bin(val >> RZN1_RTC_TIME_HOUR_SHIFT); - /* day of the week, 1970-01-01 was a Thursday */ - return (days + 4) % 7; + val = readl(rtc->base + RZN1_RTC_CALC); + tm->tm_wday = val & 0x0f; + tm->tm_mday = bcd2bin(val >> RZN1_RTC_CAL_DAY_SHIFT); + tm->tm_mon = bcd2bin(val >> RZN1_RTC_CAL_MON_SHIFT) - 1; + tm->tm_year = bcd2bin(val >> RZN1_RTC_CAL_YEAR_SHIFT) + 100; } static int rzn1_rtc_read_time(struct device *dev, struct rtc_time *tm) @@ -103,17 +91,9 @@ static int rzn1_rtc_read_time(struct device *dev, struct rtc_time *tm) rzn1_rtc_get_time_snapshot(rtc, tm); secs = readl(rtc->base + RZN1_RTC_SECC); - if (tm->tm_sec != secs) + if (tm->tm_sec != bcd2bin(secs)) rzn1_rtc_get_time_snapshot(rtc, tm); - tm->tm_sec = bcd2bin(tm->tm_sec); - tm->tm_min = bcd2bin(tm->tm_min); - tm->tm_hour = bcd2bin(tm->tm_hour); - tm->tm_wday = bcd2bin(tm->tm_wday); - tm->tm_mday = bcd2bin(tm->tm_mday); - tm->tm_mon = bcd2bin(tm->tm_mon); - tm->tm_year = bcd2bin(tm->tm_year); - return 0; } @@ -123,14 +103,6 @@ static int rzn1_rtc_set_time(struct device *dev, struct rtc_time *tm) u32 val; int ret; - tm->tm_sec = bin2bcd(tm->tm_sec); - tm->tm_min = bin2bcd(tm->tm_min); - tm->tm_hour = bin2bcd(tm->tm_hour); - tm->tm_wday = bin2bcd(rzn1_rtc_tm_to_wday(tm)); - tm->tm_mday = bin2bcd(tm->tm_mday); - tm->tm_mon = bin2bcd(tm->tm_mon); - tm->tm_year = bin2bcd(tm->tm_year); - val = readl(rtc->base + RZN1_RTC_CTL2); if (!(val & RZN1_RTC_CTL2_STOPPED)) { /* Hold the counter if it was counting up */ @@ -144,13 +116,17 @@ static int rzn1_rtc_set_time(struct device *dev, struct rtc_time *tm) return ret; } - writel(tm->tm_sec, rtc->base + RZN1_RTC_SEC); - writel(tm->tm_min, rtc->base + RZN1_RTC_MIN); - writel(tm->tm_hour, rtc->base + RZN1_RTC_HOUR); - writel(tm->tm_wday, rtc->base + RZN1_RTC_WEEK); - writel(tm->tm_mday, rtc->base + RZN1_RTC_DAY); - writel(tm->tm_mon, rtc->base + RZN1_RTC_MONTH); - writel(tm->tm_year, rtc->base + RZN1_RTC_YEAR); + val = bin2bcd(tm->tm_sec); + val |= bin2bcd(tm->tm_min) << RZN1_RTC_TIME_MIN_SHIFT; + val |= bin2bcd(tm->tm_hour) << RZN1_RTC_TIME_HOUR_SHIFT; + writel(val, rtc->base + RZN1_RTC_TIME); + + val = tm->tm_wday; + val |= bin2bcd(tm->tm_mday) << RZN1_RTC_CAL_DAY_SHIFT; + val |= bin2bcd(tm->tm_mon + 1) << RZN1_RTC_CAL_MON_SHIFT; + val |= bin2bcd(tm->tm_year - 100) << RZN1_RTC_CAL_YEAR_SHIFT; + writel(val, rtc->base + RZN1_RTC_CAL); + writel(0, rtc->base + RZN1_RTC_CTL2); return 0; @@ -405,7 +381,7 @@ MODULE_DEVICE_TABLE(of, rzn1_rtc_of_match); static struct platform_driver rzn1_rtc_driver = { .probe = rzn1_rtc_probe, - .remove_new = rzn1_rtc_remove, + .remove = rzn1_rtc_remove, .driver = { .name = "rzn1-rtc", .of_match_table = rzn1_rtc_of_match, @@ -413,7 +389,7 @@ static struct platform_driver rzn1_rtc_driver = { }; module_platform_driver(rzn1_rtc_driver); -MODULE_AUTHOR("Michel Pollet <Michel.Pollet@bp.renesas.com"); +MODULE_AUTHOR("Michel Pollet <buserror@gmail.com>"); MODULE_AUTHOR("Miquel Raynal <miquel.raynal@bootlin.com"); MODULE_DESCRIPTION("RZ/N1 RTC driver"); MODULE_LICENSE("GPL"); |