X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=drivers%2Frtc%2Fds1337.c;h=dae1b3c5cf043b538d77bf4269e3fcca52bdc489;hb=c2120fbfbc4d1f6953228f86be8bdbf38bacfdab;hp=69ab2bf9db479ccd2104b314633fec50961e73a5;hpb=da8808df7a9cef5a3d2ee286ef9ebf9de1780660;p=karo-tx-uboot.git diff --git a/drivers/rtc/ds1337.c b/drivers/rtc/ds1337.c index 69ab2bf9db..dae1b3c5cf 100644 --- a/drivers/rtc/ds1337.c +++ b/drivers/rtc/ds1337.c @@ -1,25 +1,9 @@ /* - * (C) Copyright 2001, 2002 + * (C) Copyright 2001-2008 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * Keith Outwater, keith_outwater@mvis.com` * - * 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 + * SPDX-License-Identifier: GPL-2.0+ */ /* @@ -32,21 +16,12 @@ #include #include -#if defined(CONFIG_RTC_DS1337) && defined(CONFIG_CMD_DATE) - -/*---------------------------------------------------------------------*/ -#undef DEBUG_RTC - -#ifdef DEBUG_RTC -#define DEBUGR(fmt,args...) printf(fmt ,##args) -#else -#define DEBUGR(fmt,args...) -#endif -/*---------------------------------------------------------------------*/ +#if defined(CONFIG_CMD_DATE) /* * RTC register addresses */ +#if defined CONFIG_RTC_DS1337 #define RTC_SEC_REG_ADDR 0x0 #define RTC_MIN_REG_ADDR 0x1 #define RTC_HR_REG_ADDR 0x2 @@ -56,30 +31,40 @@ #define RTC_YR_REG_ADDR 0x6 #define RTC_CTL_REG_ADDR 0x0e #define RTC_STAT_REG_ADDR 0x0f +#define RTC_TC_REG_ADDR 0x10 +#elif defined CONFIG_RTC_DS1388 +#define RTC_SEC_REG_ADDR 0x1 +#define RTC_MIN_REG_ADDR 0x2 +#define RTC_HR_REG_ADDR 0x3 +#define RTC_DAY_REG_ADDR 0x4 +#define RTC_DATE_REG_ADDR 0x5 +#define RTC_MON_REG_ADDR 0x6 +#define RTC_YR_REG_ADDR 0x7 +#define RTC_CTL_REG_ADDR 0x0c +#define RTC_STAT_REG_ADDR 0x0b +#define RTC_TC_REG_ADDR 0x0a +#endif /* * RTC control register bits */ -#define RTC_CTL_BIT_A1IE 0x1 /* Alarm 1 interrupt enable */ -#define RTC_CTL_BIT_A2IE 0x2 /* Alarm 2 interrupt enable */ -#define RTC_CTL_BIT_INTCN 0x4 /* Interrupt control */ -#define RTC_CTL_BIT_RS1 0x8 /* Rate select 1 */ -#define RTC_CTL_BIT_RS2 0x10 /* Rate select 2 */ -#define RTC_CTL_BIT_DOSC 0x80 /* Disable Oscillator */ +#define RTC_CTL_BIT_A1IE 0x1 /* Alarm 1 interrupt enable */ +#define RTC_CTL_BIT_A2IE 0x2 /* Alarm 2 interrupt enable */ +#define RTC_CTL_BIT_INTCN 0x4 /* Interrupt control */ +#define RTC_CTL_BIT_RS1 0x8 /* Rate select 1 */ +#define RTC_CTL_BIT_RS2 0x10 /* Rate select 2 */ +#define RTC_CTL_BIT_DOSC 0x80 /* Disable Oscillator */ /* * RTC status register bits */ -#define RTC_STAT_BIT_A1F 0x1 /* Alarm 1 flag */ -#define RTC_STAT_BIT_A2F 0x2 /* Alarm 2 flag */ -#define RTC_STAT_BIT_OSF 0x80 /* Oscillator stop flag */ +#define RTC_STAT_BIT_A1F 0x1 /* Alarm 1 flag */ +#define RTC_STAT_BIT_A2F 0x2 /* Alarm 2 flag */ +#define RTC_STAT_BIT_OSF 0x80 /* Oscillator stop flag */ static uchar rtc_read (uchar reg); static void rtc_write (uchar reg, uchar val); -static uchar bin2bcd (unsigned int n); -static unsigned bcd2bin (uchar c); - /* * Get the current time from the RTC @@ -99,7 +84,12 @@ int rtc_get (struct rtc_time *tmp) mon_cent = rtc_read (RTC_MON_REG_ADDR); year = rtc_read (RTC_YR_REG_ADDR); - DEBUGR ("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x " + /* No century bit, assume year 2000 */ +#ifdef CONFIG_RTC_DS1388 + mon_cent |= 0x80; +#endif + + debug("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x " "hr: %02x min: %02x sec: %02x control: %02x status: %02x\n", year, mon_cent, mday, wday, hour, min, sec, control, status); @@ -121,7 +111,7 @@ int rtc_get (struct rtc_time *tmp) tmp->tm_yday = 0; tmp->tm_isdst= 0; - DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", + debug("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, tmp->tm_hour, tmp->tm_min, tmp->tm_sec); @@ -132,11 +122,11 @@ int rtc_get (struct rtc_time *tmp) /* * Set the RTC */ -void rtc_set (struct rtc_time *tmp) +int rtc_set (struct rtc_time *tmp) { uchar century; - DEBUGR ("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", + debug("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, tmp->tm_hour, tmp->tm_min, tmp->tm_sec); @@ -150,6 +140,8 @@ void rtc_set (struct rtc_time *tmp) rtc_write (RTC_HR_REG_ADDR, bin2bcd (tmp->tm_hour)); rtc_write (RTC_MIN_REG_ADDR, bin2bcd (tmp->tm_min)); rtc_write (RTC_SEC_REG_ADDR, bin2bcd (tmp->tm_sec)); + + return 0; } @@ -158,18 +150,29 @@ void rtc_set (struct rtc_time *tmp) * SQW/INTB* pin and program it for 32,768 Hz output. Note that * according to the datasheet, turning on the square wave output * increases the current drain on the backup battery from about - * 600 nA to 2uA. Define CFG_RTC_DS1337_NOOSC if you wish to turn + * 600 nA to 2uA. Define CONFIG_SYS_RTC_DS1337_NOOSC if you wish to turn * off the OSC output. */ -#ifdef CFG_RTC_DS1337_NOOSC + +#ifdef CONFIG_SYS_RTC_DS1337_NOOSC #define RTC_DS1337_RESET_VAL \ - (RTC_CTL_BIT_INTCN | RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2) + (RTC_CTL_BIT_INTCN | RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2) #else #define RTC_DS1337_RESET_VAL (RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2) #endif void rtc_reset (void) { +#ifdef CONFIG_SYS_RTC_DS1337 rtc_write (RTC_CTL_REG_ADDR, RTC_DS1337_RESET_VAL); +#elif defined CONFIG_SYS_RTC_DS1388 + rtc_write(RTC_CTL_REG_ADDR, 0x0); /* hw default */ +#endif +#ifdef CONFIG_SYS_DS1339_TCR_VAL + rtc_write (RTC_TC_REG_ADDR, CONFIG_SYS_DS1339_TCR_VAL); +#endif +#ifdef CONFIG_SYS_DS1388_TCR_VAL + rtc_write(RTC_TC_REG_ADDR, CONFIG_SYS_DS1388_TCR_VAL); +#endif } @@ -180,23 +183,13 @@ void rtc_reset (void) static uchar rtc_read (uchar reg) { - return (i2c_reg_read (CFG_I2C_RTC_ADDR, reg)); + return (i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, reg)); } static void rtc_write (uchar reg, uchar val) { - i2c_reg_write (CFG_I2C_RTC_ADDR, reg, val); -} - -static unsigned bcd2bin (uchar n) -{ - return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F)); -} - -static unsigned char bin2bcd (unsigned int n) -{ - return (((n / 10) << 4) | (n % 10)); + i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val); } #endif