diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/rtc/isl1208.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/rtc/isl1208.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/qemu/roms/u-boot/drivers/rtc/isl1208.c b/qemu/roms/u-boot/drivers/rtc/isl1208.c deleted file mode 100644 index 807e2e404..000000000 --- a/qemu/roms/u-boot/drivers/rtc/isl1208.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * (C) Copyright 2008 - * Tor Krill, Excito Elektronik i Skåne , tor@excito.com - * - * Modelled after the ds1337 driver - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * Date & Time support (no alarms) for Intersil - * ISL1208 Real Time Clock (RTC). - */ - -#include <common.h> -#include <command.h> -#include <rtc.h> -#include <i2c.h> - -/*---------------------------------------------------------------------*/ -#ifdef DEBUG_RTC -#define DEBUGR(fmt,args...) printf(fmt ,##args) -#else -#define DEBUGR(fmt,args...) -#endif -/*---------------------------------------------------------------------*/ - -/* - * RTC register addresses - */ - -#define RTC_SEC_REG_ADDR 0x0 -#define RTC_MIN_REG_ADDR 0x1 -#define RTC_HR_REG_ADDR 0x2 -#define RTC_DATE_REG_ADDR 0x3 -#define RTC_MON_REG_ADDR 0x4 -#define RTC_YR_REG_ADDR 0x5 -#define RTC_DAY_REG_ADDR 0x6 -#define RTC_STAT_REG_ADDR 0x7 -/* - * RTC control register bits - */ - -/* - * RTC status register bits - */ -#define RTC_STAT_BIT_ARST 0x80 /* AUTO RESET ENABLE BIT */ -#define RTC_STAT_BIT_XTOSCB 0x40 /* CRYSTAL OSCILLATOR ENABLE BIT */ -#define RTC_STAT_BIT_WRTC 0x10 /* WRITE RTC ENABLE BIT */ -#define RTC_STAT_BIT_ALM 0x04 /* ALARM BIT */ -#define RTC_STAT_BIT_BAT 0x02 /* BATTERY BIT */ -#define RTC_STAT_BIT_RTCF 0x01 /* REAL TIME CLOCK FAIL BIT */ - -static uchar rtc_read (uchar reg); -static void rtc_write (uchar reg, uchar val); - -/* - * Get the current time from the RTC - */ - -int rtc_get (struct rtc_time *tmp) -{ - int rel = 0; - uchar sec, min, hour, mday, wday, mon, year, status; - - status = rtc_read (RTC_STAT_REG_ADDR); - sec = rtc_read (RTC_SEC_REG_ADDR); - min = rtc_read (RTC_MIN_REG_ADDR); - hour = rtc_read (RTC_HR_REG_ADDR); - wday = rtc_read (RTC_DAY_REG_ADDR); - mday = rtc_read (RTC_DATE_REG_ADDR); - mon = rtc_read (RTC_MON_REG_ADDR); - year = rtc_read (RTC_YR_REG_ADDR); - - DEBUGR ("Get RTC year: %02x mon: %02x mday: %02x wday: %02x " - "hr: %02x min: %02x sec: %02x status: %02x\n", - year, mon, mday, wday, hour, min, sec, status); - - if (status & RTC_STAT_BIT_RTCF) { - printf ("### Warning: RTC oscillator has stopped\n"); - rtc_write(RTC_STAT_REG_ADDR, - rtc_read(RTC_STAT_REG_ADDR) &~ (RTC_STAT_BIT_BAT|RTC_STAT_BIT_RTCF)); - rel = -1; - } - - tmp->tm_sec = bcd2bin (sec & 0x7F); - tmp->tm_min = bcd2bin (min & 0x7F); - tmp->tm_hour = bcd2bin (hour & 0x3F); - tmp->tm_mday = bcd2bin (mday & 0x3F); - tmp->tm_mon = bcd2bin (mon & 0x1F); - tmp->tm_year = bcd2bin (year)+2000; - tmp->tm_wday = bcd2bin (wday & 0x07); - tmp->tm_yday = 0; - tmp->tm_isdst= 0; - - DEBUGR ("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; -} - -/* - * Set the RTC - */ -int rtc_set (struct rtc_time *tmp) -{ - DEBUGR ("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); - - /* enable write */ - rtc_write(RTC_STAT_REG_ADDR, - rtc_read(RTC_STAT_REG_ADDR) | RTC_STAT_BIT_WRTC); - - rtc_write (RTC_YR_REG_ADDR, bin2bcd (tmp->tm_year % 100)); - rtc_write (RTC_MON_REG_ADDR, bin2bcd (tmp->tm_mon)); - rtc_write (RTC_DAY_REG_ADDR, bin2bcd (tmp->tm_wday)); - rtc_write (RTC_DATE_REG_ADDR, bin2bcd (tmp->tm_mday)); - rtc_write (RTC_HR_REG_ADDR, bin2bcd (tmp->tm_hour) | 0x80 ); /* 24h clock */ - rtc_write (RTC_MIN_REG_ADDR, bin2bcd (tmp->tm_min)); - rtc_write (RTC_SEC_REG_ADDR, bin2bcd (tmp->tm_sec)); - - /* disable write */ - rtc_write(RTC_STAT_REG_ADDR, - rtc_read(RTC_STAT_REG_ADDR) & ~RTC_STAT_BIT_WRTC); - - return 0; -} - -void rtc_reset (void) -{ -} - -/* - * Helper functions - */ - -static uchar rtc_read (uchar reg) -{ - return (i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, reg)); -} - -static void rtc_write (uchar reg, uchar val) -{ - i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val); -} |