From: Luuk Paulussen luuk.paulussen@alliedtelesis.co.nz

Signed-off-by: Luuk Paulussen luuk.paulussen@alliedtelesis.co.nz Acked-by: Chris Packham chris.packham@alliedtelesis.co.nz Cc: Prafulla Wadaskar prafulla@marvell.com --- arch/arm/include/asm/arch-kirkwood/kirkwood.h | 2 + drivers/rtc/Makefile | 1 + drivers/rtc/kirkwood.c | 76 +++++++++++++++++++++++++ 3 files changed, 79 insertions(+), 0 deletions(-) create mode 100644 drivers/rtc/kirkwood.c

diff --git a/arch/arm/include/asm/arch-kirkwood/kirkwood.h b/arch/arm/include/asm/arch-kirkwood/kirkwood.h index 0104418..15922eb 100644 --- a/arch/arm/include/asm/arch-kirkwood/kirkwood.h +++ b/arch/arm/include/asm/arch-kirkwood/kirkwood.h @@ -50,6 +50,8 @@ #define KW_MPP_BASE (KW_REGISTER(0x10000)) #define KW_GPIO0_BASE (KW_REGISTER(0x10100)) #define KW_GPIO1_BASE (KW_REGISTER(0x10140)) +#define KW_RTC_TIME (KW_REGISTER(0x10300)) +#define KW_RTC_DATE (KW_REGISTER(0x10304)) #define KW_NANDF_BASE (KW_REGISTER(0x10418)) #define KW_SPI_BASE (KW_REGISTER(0x10600)) #define KW_CPU_WIN_BASE (KW_REGISTER(0x20000)) diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index e4be4a4..ec064d9 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -43,6 +43,7 @@ COBJS-$(CONFIG_RTC_DS174x) += ds174x.o COBJS-$(CONFIG_RTC_DS3231) += ds3231.o COBJS-$(CONFIG_RTC_FTRTC010) += ftrtc010.o COBJS-$(CONFIG_RTC_ISL1208) += isl1208.o +COBJS-$(CONFIG_RTC_KIRKWOOD) += kirkwood.o COBJS-$(CONFIG_RTC_M41T11) += m41t11.o COBJS-$(CONFIG_RTC_M41T60) += m41t60.o COBJS-$(CONFIG_RTC_M41T62) += m41t62.o diff --git a/drivers/rtc/kirkwood.c b/drivers/rtc/kirkwood.c new file mode 100644 index 0000000..5c9bc81 --- /dev/null +++ b/drivers/rtc/kirkwood.c @@ -0,0 +1,76 @@ +/* + * Driver for the RTC in Marvell SoCs. + * + * Based on Linux Kernel driver. + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <common.h> +#include <command.h> +#include <rtc.h> +#include <bcd.h> +#include <asm/arch/kirkwood.h> + +#if defined(CONFIG_CMD_DATE) + +#define RTC_TIME_REG_OFFS 0 +#define RTC_SECONDS_OFFS 0 +#define RTC_MINUTES_OFFS 8 +#define RTC_HOURS_OFFS 16 +#define RTC_WDAY_OFFS 24 +#define RTC_HOURS_12H_MODE (1 << 22) /* 12 hours mode */ + +#define RTC_DATE_REG_OFFS 4 +#define RTC_MDAY_OFFS 0 +#define RTC_MONTH_OFFS 8 +#define RTC_YEAR_OFFS 16 +#define KIRKWOOD_YEAR_BASE 2000 + +int rtc_set(struct rtc_time *tmp) +{ + ulong rtc_reg; + + GregorianDay (tmp); + + rtc_reg = (bin2bcd(tmp->tm_sec) << RTC_SECONDS_OFFS) | + (bin2bcd(tmp->tm_min) << RTC_MINUTES_OFFS) | + (bin2bcd(tmp->tm_hour) << RTC_HOURS_OFFS) | + (bin2bcd(tmp->tm_wday) << RTC_WDAY_OFFS); + writel(rtc_reg, KW_RTC_TIME); + + rtc_reg = (bin2bcd(tmp->tm_mday) << RTC_MDAY_OFFS) | + (bin2bcd(tmp->tm_mon + 1) << RTC_MONTH_OFFS) | + (bin2bcd(tmp->tm_year - KIRKWOOD_YEAR_BASE) << RTC_YEAR_OFFS); + writel(rtc_reg, KW_RTC_DATE); + + return 0; +} + +int rtc_get(struct rtc_time *tmp) +{ + ulong rtc_time, rtc_date; + + rtc_time = readl(KW_RTC_TIME); + rtc_date = readl(KW_RTC_DATE); + + tmp->tm_sec = bcd2bin(rtc_time & 0x7f); + tmp->tm_min = bcd2bin((rtc_time >> RTC_MINUTES_OFFS) & 0x7f); + tmp->tm_hour = bcd2bin((rtc_time >> RTC_HOURS_OFFS) & 0x3f); /* assume 24 hours mode */ + tmp->tm_mday = bcd2bin(rtc_date & 0x3f); + tmp->tm_wday = bcd2bin((rtc_time >> RTC_WDAY_OFFS) & 0x7); + tmp->tm_mon = bcd2bin((rtc_date >> RTC_MONTH_OFFS) & 0x3f) - 1; + /* hw counts from year 2000, but tm_year is relative to 0 */ + tmp->tm_year = bcd2bin((rtc_date >> RTC_YEAR_OFFS) & 0xff) + KIRKWOOD_YEAR_BASE; + + return 0; +} + +void rtc_reset(void) +{ + return; +} + +#endif /* CONFIG_CMD_DATE */