From 4e8b7544b796c4a8d4513b4070716ce42bfba840 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 24 Oct 2011 06:44:15 +0000 Subject: rtc: Make mc13783-rtc driver generic Rename mc13783-rtc so that it can be used for both MC13783 and MC13892 PMICs. efikamx board, for example, does use a MC13892 PMIC, but the RTC selection is currently made as: #define CONFIG_RTC_MC13783 ,which is not very obvious. Let the MC13783 and MC13892 RTC be selected by: #define CONFIG_RTC_MC13XXX Signed-off-by: Fabio Estevam Acked-by: Stefano Babic --- drivers/rtc/mc13xxx-rtc.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 drivers/rtc/mc13xxx-rtc.c (limited to 'drivers/rtc/mc13xxx-rtc.c') diff --git a/drivers/rtc/mc13xxx-rtc.c b/drivers/rtc/mc13xxx-rtc.c new file mode 100644 index 0000000000..70ea8a1589 --- /dev/null +++ b/drivers/rtc/mc13xxx-rtc.c @@ -0,0 +1,79 @@ +/* + * Copyright (C) 2008, Guennadi Liakhovetski + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include + +int rtc_get(struct rtc_time *rtc) +{ + u32 day1, day2, time; + int tim, i = 0; + struct pmic *p = get_pmic(); + int ret; + + do { + ret = pmic_reg_read(p, REG_RTC_DAY, &day1); + if (ret < 0) + return -1; + + ret = pmic_reg_read(p, REG_RTC_TIME, &time); + if (ret < 0) + return -1; + + ret = pmic_reg_read(p, REG_RTC_DAY, &day2); + if (ret < 0) + return -1; + + } while (day1 != day2 && i++ < 3); + + tim = day1 * 86400 + time; + + to_tm(tim, rtc); + + rtc->tm_yday = 0; + rtc->tm_isdst = 0; + + return 0; +} + +int rtc_set(struct rtc_time *rtc) +{ + u32 time, day; + struct pmic *p = get_pmic(); + + time = mktime(rtc->tm_year, rtc->tm_mon, rtc->tm_mday, + rtc->tm_hour, rtc->tm_min, rtc->tm_sec); + day = time / 86400; + time %= 86400; + + pmic_reg_write(p, REG_RTC_DAY, day); + pmic_reg_write(p, REG_RTC_TIME, time); + + return 0; +} + +void rtc_reset(void) +{ +} -- cgit v1.2.1