diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/rtc/m41t11.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/rtc/m41t11.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/qemu/roms/u-boot/drivers/rtc/m41t11.c b/qemu/roms/u-boot/drivers/rtc/m41t11.c deleted file mode 100644 index fe0b5fb60..000000000 --- a/qemu/roms/u-boot/drivers/rtc/m41t11.c +++ /dev/null @@ -1,171 +0,0 @@ -/* - * (C) Copyright 2002 - * Andrew May, Viasat Inc, amay@viasat.com - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * M41T11 Serial Access Timekeeper(R) SRAM - * can you believe a trademark on that? - */ - -/* #define DEBUG 1 */ - -#include <common.h> -#include <command.h> -#include <rtc.h> -#include <i2c.h> - -/* - I Don't have an example config file but this - is what should be done. - -#define CONFIG_RTC_M41T11 1 -#define CONFIG_SYS_I2C_RTC_ADDR 0x68 -#if 0 -#define CONFIG_SYS_M41T11_EXT_CENTURY_DATA -#else -#define CONFIG_SYS_M41T11_BASE_YEAR 2000 -#endif -*/ - -#if defined(CONFIG_SYS_I2C_RTC_ADDR) && defined(CONFIG_CMD_DATE) - -/* ------------------------------------------------------------------------- */ -/* - these are simple defines for the chip local to here so they aren't too - verbose - DAY/DATE aren't nice but that is how they are on the data sheet -*/ -#define RTC_SEC_ADDR 0x0 -#define RTC_MIN_ADDR 0x1 -#define RTC_HOUR_ADDR 0x2 -#define RTC_DAY_ADDR 0x3 -#define RTC_DATE_ADDR 0x4 -#define RTC_MONTH_ADDR 0x5 -#define RTC_YEARS_ADDR 0x6 - -#define RTC_REG_CNT 7 - -#define RTC_CONTROL_ADDR 0x7 - - -#ifndef CONFIG_SYS_M41T11_EXT_CENTURY_DATA - -#define REG_CNT (RTC_REG_CNT+1) - -/* - 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 CONFIG_SYS_M41T11_BASE_YEAR -#define CONFIG_SYS_M41T11_BASE_YEAR 2000 -#endif - -#else -/* we will store extra year info in byte 9*/ -#define M41T11_YEAR_DATA 0x8 -#define M41T11_YEAR_SIZE 1 -#define REG_CNT (RTC_REG_CNT+1+M41T11_YEAR_SIZE) -#endif - -#define M41T11_STORAGE_SZ (64-REG_CNT) - -int rtc_get (struct rtc_time *tmp) -{ - int rel = 0; - uchar 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 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(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(CONFIG_SYS_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE); - } - tmp->tm_year =((int)cent*100)+bcd2bin(data[RTC_YEARS_ADDR]); - } -#endif - tmp->tm_wday = bcd2bin (data[RTC_DAY_ADDR] & 0x07); - tmp->tm_yday = 0; - tmp->tm_isdst= 0; - - 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; -} - -int rtc_set (struct rtc_time *tmp) -{ - uchar data[RTC_REG_CNT]; - - 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); - - data[RTC_SEC_ADDR] = bin2bcd(tmp->tm_sec) & 0x7F;/*just in case*/ - data[RTC_MIN_ADDR] = bin2bcd(tmp->tm_min); - data[RTC_HOUR_ADDR] = bin2bcd(tmp->tm_hour) & 0x3F;/*handle cent stuff later*/ - data[RTC_DATE_ADDR] = bin2bcd(tmp->tm_mday) & 0x3F; - data[RTC_MONTH_ADDR] = bin2bcd(tmp->tm_mon); - data[RTC_DAY_ADDR] = bin2bcd(tmp->tm_wday) & 0x07; - - data[RTC_HOUR_ADDR] |= 0x80;/*we will always use CEB*/ - - data[RTC_YEARS_ADDR] = bin2bcd(tmp->tm_year%100);/*same thing either way*/ -#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 - 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(CONFIG_SYS_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE); - } -#endif - 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(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, &val, 1); - val = val & 0x7F;/*make sure we are running*/ - i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, &val, RTC_REG_CNT); - - i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1); - val = val & 0x3F;/*turn off freq test keep calibration*/ - i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1); -} -#endif |