X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Frtc%2Fm41t11.c;h=fe0b5fb605b5d773916617f19844915dc2f22631;hb=d77af8a8c9f75cb8ffe7804dfe0c999cc727afdd;hp=81da33a31e1879d0a47c5e7290e12e5be308c37e;hpb=74ac5facb988fc488a707db228b177ead63a6541;p=u-boot diff --git a/drivers/rtc/m41t11.c b/drivers/rtc/m41t11.c index 81da33a31e..fe0b5fb605 100644 --- a/drivers/rtc/m41t11.c +++ b/drivers/rtc/m41t11.c @@ -2,20 +2,7 @@ * (C) Copyright 2002 * Andrew May, Viasat Inc, amay@viasat.com * - * 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+ */ /* @@ -35,26 +22,15 @@ is what should be done. #define CONFIG_RTC_M41T11 1 -#define CFG_I2C_RTC_ADDR 0x68 +#define CONFIG_SYS_I2C_RTC_ADDR 0x68 #if 0 -#define CFG_M41T11_EXT_CENTURY_DATA +#define CONFIG_SYS_M41T11_EXT_CENTURY_DATA #else -#define CFG_M41T11_BASE_YEAR 2000 +#define CONFIG_SYS_M41T11_BASE_YEAR 2000 #endif */ -#if defined(CONFIG_RTC_M41T11) && defined(CFG_I2C_RTC_ADDR) && defined(CONFIG_CMD_DATE) - -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)); -} - +#if defined(CONFIG_SYS_I2C_RTC_ADDR) && defined(CONFIG_CMD_DATE) /* ------------------------------------------------------------------------- */ /* @@ -75,7 +51,7 @@ static unsigned char bin2bcd (unsigned int n) #define RTC_CONTROL_ADDR 0x7 -#ifndef CFG_M41T11_EXT_CENTURY_DATA +#ifndef CONFIG_SYS_M41T11_EXT_CENTURY_DATA #define REG_CNT (RTC_REG_CNT+1) @@ -83,8 +59,8 @@ static unsigned char bin2bcd (unsigned int n) you only get 00-99 for the year we will asume you want from the year 2000 if you don't set the config */ -#ifndef CFG_M41T11_BASE_YEAR -#define CFG_M41T11_BASE_YEAR 2000 +#ifndef CONFIG_SYS_M41T11_BASE_YEAR +#define CONFIG_SYS_M41T11_BASE_YEAR 2000 #endif #else @@ -96,35 +72,38 @@ static unsigned char bin2bcd (unsigned int n) #define M41T11_STORAGE_SZ (64-REG_CNT) -void rtc_get (struct rtc_time *tmp) +int rtc_get (struct rtc_time *tmp) { + int rel = 0; uchar data[RTC_REG_CNT]; - i2c_read(CFG_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, data, RTC_REG_CNT); + i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, data, RTC_REG_CNT); if( data[RTC_SEC_ADDR] & 0x80 ){ printf( "m41t11 RTC Clock stopped!!!\n" ); + rel = -1; } tmp->tm_sec = bcd2bin (data[RTC_SEC_ADDR] & 0x7F); tmp->tm_min = bcd2bin (data[RTC_MIN_ADDR] & 0x7F); tmp->tm_hour = bcd2bin (data[RTC_HOUR_ADDR] & 0x3F); tmp->tm_mday = bcd2bin (data[RTC_DATE_ADDR] & 0x3F); tmp->tm_mon = bcd2bin (data[RTC_MONTH_ADDR]& 0x1F); -#ifndef CFG_M41T11_EXT_CENTURY_DATA - tmp->tm_year = CFG_M41T11_BASE_YEAR +#ifndef CONFIG_SYS_M41T11_EXT_CENTURY_DATA + tmp->tm_year = CONFIG_SYS_M41T11_BASE_YEAR + bcd2bin(data[RTC_YEARS_ADDR]) + ((data[RTC_HOUR_ADDR]&0x40) ? 100 : 0); #else { unsigned char cent; - i2c_read(CFG_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE); + i2c_read(CONFIG_SYS_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE); if( !(data[RTC_HOUR_ADDR] & 0x80) ){ printf( "m41t11 RTC: cann't keep track of years without CEB set\n" ); + rel = -1; } if( (cent & 0x1) != ((data[RTC_HOUR_ADDR]&0x40)>>7) ){ /*century flip store off new year*/ cent += 1; - i2c_write(CFG_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE); + i2c_write(CONFIG_SYS_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE); } tmp->tm_year =((int)cent*100)+bcd2bin(data[RTC_YEARS_ADDR]); } @@ -136,9 +115,11 @@ void rtc_get (struct rtc_time *tmp) 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); + + return rel; } -void rtc_set (struct rtc_time *tmp) +int rtc_set (struct rtc_time *tmp) { uchar data[RTC_REG_CNT]; @@ -156,47 +137,35 @@ void rtc_set (struct rtc_time *tmp) data[RTC_HOUR_ADDR] |= 0x80;/*we will always use CEB*/ data[RTC_YEARS_ADDR] = bin2bcd(tmp->tm_year%100);/*same thing either way*/ -#ifndef CFG_M41T11_EXT_CENTURY_DATA - if( ((tmp->tm_year - CFG_M41T11_BASE_YEAR) > 200) || - (tmp->tm_year < CFG_M41T11_BASE_YEAR) ){ +#ifndef CONFIG_SYS_M41T11_EXT_CENTURY_DATA + if( ((tmp->tm_year - CONFIG_SYS_M41T11_BASE_YEAR) > 200) || + (tmp->tm_year < CONFIG_SYS_M41T11_BASE_YEAR) ){ printf( "m41t11 RTC setting year out of range!!need recompile\n" ); } - data[RTC_HOUR_ADDR] |= (tmp->tm_year - CFG_M41T11_BASE_YEAR) > 100 ? 0x40 : 0; + data[RTC_HOUR_ADDR] |= (tmp->tm_year - CONFIG_SYS_M41T11_BASE_YEAR) > 100 ? 0x40 : 0; #else { unsigned char cent; cent = tmp->tm_year ? tmp->tm_year / 100 : 0; data[RTC_HOUR_ADDR] |= (cent & 0x1) ? 0x40 : 0; - i2c_write(CFG_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE); + i2c_write(CONFIG_SYS_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE); } #endif - i2c_write(CFG_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, data, RTC_REG_CNT); + i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, data, RTC_REG_CNT); + + return 0; } void rtc_reset (void) { unsigned char val; /* clear all control & status registers */ - i2c_read(CFG_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, &val, 1); + i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, &val, 1); val = val & 0x7F;/*make sure we are running*/ - i2c_write(CFG_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, &val, RTC_REG_CNT); + i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, &val, RTC_REG_CNT); - i2c_read(CFG_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1); + i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1); val = val & 0x3F;/*turn off freq test keep calibration*/ - i2c_write(CFG_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1); -} - -int rtc_store(int addr, unsigned char* data, int size) -{ - /*don't let things wrap onto the time on a write*/ - if( (addr+size) >= M41T11_STORAGE_SZ ) - return 1; - return i2c_write( CFG_I2C_RTC_ADDR, REG_CNT+addr, 1, data, size ); + i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1); } - -int rtc_recall(int addr, unsigned char* data, int size) -{ - return i2c_read( CFG_I2C_RTC_ADDR, REG_CNT+addr, 1, data, size ); -} - #endif