From ebb612fbcc87a9547a3603ef6188a26b0760a9aa Mon Sep 17 00:00:00 2001 From: Maurus Cuelenaere Date: Tue, 15 Jul 2008 17:17:01 +0000 Subject: Onda VX747: 1) Improve touchscreen handling 2) Add RTC driver 4) Add NAND Flash ID scanning 3) Other minor fixes Nand_ID: Add a generic NAND ID database (currently only containg Samsung chips) git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18052 a1c6a512-1295-4272-9138-f99709370657 --- firmware/drivers/rtc/rtc_jz4740.c | 307 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 307 insertions(+) create mode 100644 firmware/drivers/rtc/rtc_jz4740.c (limited to 'firmware/drivers/rtc') diff --git a/firmware/drivers/rtc/rtc_jz4740.c b/firmware/drivers/rtc/rtc_jz4740.c new file mode 100644 index 0000000000..b9cceec9af --- /dev/null +++ b/firmware/drivers/rtc/rtc_jz4740.c @@ -0,0 +1,307 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2008 by Maurus Cuelenaere + * + * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ + +/* + * Jz OnChip Real Time Clock interface for Linux + * + */ + +#include "config.h" +#include "jz4740.h" +#include "rtc.h" +#include "timefuncs.h" + +static unsigned int epoch = 1900; +static const unsigned char days_in_mo[] = { + 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 +}; + +static const unsigned int yearday[5] = {0, 366, 366+365, 366+365*2, 366+365*3}; +static const unsigned int sweekday = 6; +static const unsigned int sum_monthday[13] = { + 0, + 31, + 31+28, + 31+28+31, + 31+28+31+30, + 31+28+31+30+31, + 31+28+31+30+31+30, + 31+28+31+30+31+30+31, + 31+28+31+30+31+30+31+31, + 31+28+31+30+31+30+31+31+30, + 31+28+31+30+31+30+31+31+30+31, + 31+28+31+30+31+30+31+31+30+31+30, + 365 +}; + +static unsigned int jz_mktime(int year, int mon, int day, int hour, int min, int sec) +{ + unsigned int seccounter; + + if (year < 2000) + year = 2000; + year -= 2000; + seccounter = (year/4)*(365*3+366); + seccounter += yearday[year%4]; + if (year%4) + seccounter += sum_monthday[mon-1]; + else + if (mon >= 3) + seccounter += sum_monthday[mon-1]+1; + else + seccounter += sum_monthday[mon-1]; + seccounter += day-1; + seccounter *= 24; + seccounter += hour; + seccounter *= 60; + seccounter += min; + seccounter *= 60; + seccounter += sec; + + return seccounter; +} + +static void jz_gettime(unsigned int rtc, int *year, int *mon, int *day, int *hour, + int *min, int *sec, int *weekday) +{ + unsigned int tday, tsec, i, tmp; + + tday = rtc/(24*3600); + *weekday = ((tday % 7) + sweekday) % 7; + *year = (tday/(366+365*3)) * 4; + tday = tday%(366+365*3); + for (i=0;i<5;i++) + { + if (tday=2)) + tmp += 1; + if (tday=2)) + tmp += 1; + *day = tday - tmp + 1; + break; + } + } + tsec = rtc % (24 * 3600); + *hour = tsec / 3600; + *min = (tsec / 60) % 60; + *sec = tsec - *hour*3600 - *min*60; + *year += 2000; +} + +int rtc_read_datetime(unsigned char* buf) +{ + struct tm rtc_tm; + unsigned int sec,mon,mday,wday,year,hour,min; + + /* + * Only the values that we read from the RTC are set. We leave + * tm_wday, tm_yday and tm_isdst untouched. Even though the + * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated + * by the RTC when initially set to a non-zero value. + */ + jz_gettime(REG_RTC_RSR, &year, &mon, &mday, &hour, &min, &sec, &wday); + + year -= 2000; + + rtc_tm.tm_sec = sec; + rtc_tm.tm_min = min; + rtc_tm.tm_hour = hour; + rtc_tm.tm_mday = mday; + rtc_tm.tm_wday = wday; + /* Don't use centry, but start from year 1970 */ + rtc_tm.tm_mon = mon; + if ((year += (epoch - 1900)) <= 69) + year += 100; + rtc_tm.tm_year = year + 1900; + + rtc_tm.tm_yday = 0; /* Not implemented for now */ + rtc_tm.tm_isdst = -1; /* Not implemented for now */ + + (*((struct tm*)buf)) = rtc_tm; + return 1; +} + +#if 0 +void get_rtc_alm_time(struct rtc_time *alm_tm) +{ + unsigned int sec,mon,mday,wday,year,hour,min; + unsigned int lval; + unsigned long flags; + /* + * Only the values that we read from the RTC are set. That + * means only tm_hour, tm_min, and tm_sec. + */ + lval = REG_RTC_RSAR; + jz_gettime(lval, &year, &mon, &mday, &hour, &min, &sec, &wday); + + alm_tm->tm_sec = sec; + alm_tm->tm_min = min; + alm_tm->tm_hour = hour; +} + + +int rtc_ioctl(unsigned int cmd,struct rtc_time *val,unsigned int epo) +{ + struct rtc_time wtime; + switch (cmd) { + case RTC_ALM_READ: /* Read the present alarm time */ + /* + * This returns a struct rtc_time. Reading >= 0xc0 + * means "don't care" or "match all". Only the tm_hour, + * tm_min, and tm_sec values are filled in. + */ + get_rtc_alm_time(val); + break; + case RTC_ALM_SET: /* Store a time into the alarm */ + { + unsigned char ahrs, amin, asec; + unsigned int sec,mon,mday,wday,year,hour,min; + unsigned int lval; + unsigned long flags; + struct rtc_time alm_tm; + + alm_tm = *val; + ahrs = alm_tm.tm_hour; + amin = alm_tm.tm_min; + asec = alm_tm.tm_sec; + + + + if (ahrs >= 24) + return -1; + + if (amin >= 60) + return -1; + + if (asec >= 60) + return -1; + + flags = spin_lock_irqsave(); + lval = REG_RTC_RSR; + jz_gettime(lval, &year, &mon, &mday, &hour, &min, &sec, &wday); + hour = ahrs; + min = amin; + sec = asec; + lval = jz_mktime(year, mon, mday, hour, min, sec); + REG_RTC_RSAR = lval; + spin_unlock_irqrestore(flags); + break; + } + case RTC_RD_TIME: /* Read the time/date from RTC */ + get_rtc_time(val); + break; + case RTC_SET_TIME: /* Set the RTC */ + { + struct rtc_time rtc_tm; + unsigned int mon, day, hrs, min, sec, leap_yr, date; + unsigned int yrs; + unsigned int lval; + unsigned long flags; + + rtc_tm = *val; + yrs = rtc_tm.tm_year;// + 1900; + mon = rtc_tm.tm_mon + 1; /* tm_mon starts at zero */ + day = rtc_tm.tm_wday; + date = rtc_tm.tm_mday; + hrs = rtc_tm.tm_hour; + min = rtc_tm.tm_min; + sec = rtc_tm.tm_sec; + + + if (yrs < 1970) + return -EINVAL; + leap_yr = ((!(yrs % 4) && (yrs % 100)) || !(yrs % 400)); + + if ((mon > 12) || (date == 0)) + return -EINVAL; + + if (date > (days_in_mo[mon] + ((mon == 2) && leap_yr))) + return -EINVAL; + + if ((hrs >= 24) || (min >= 60) || (sec >= 60)) + return -EINVAL; + + if ((yrs -= epoch) > 255) /* They are unsigned */ + return -EINVAL; + + flags = spin_lock_irqsave(); + /* These limits and adjustments are independant of + * whether the chip is in binary mode or not. + */ + + if (yrs > 169) { + spin_unlock_irqrestore(flags); + return -EINVAL; + } + + yrs += epoch; + lval = jz_mktime(yrs, mon, date, hrs, min, sec); + REG_RTC_RSR = lval; + /* FIXME: maybe we need to write alarm register here. */ + spin_unlock_irqrestore(flags); + + return 0; + } + break; + case RTC_EPOCH_READ: /* Read the epoch. */ + epo = epoch; + return 0; + case RTC_EPOCH_SET: /* Set the epoch. */ + /* + * There were no RTC clocks before 1900. + */ + if (epo < 1900) + return -EINVAL; + + epoch = epo; + return 0; + default: + return -EINVAL; + } + return -EINVAL; +} +#endif + +#define udelay(x) for(i=0; i