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| author | Wolfgang Denk <wd@denx.de> | 2011-08-04 23:05:07 +0200 | 
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2011-08-04 23:05:07 +0200 | 
| commit | fb6440ee9b110b759ef61fd80bbd0df1bbf0f37b (patch) | |
| tree | dbde38784fb8b48c7f9b14e70a947fab3a1f3bab /drivers/rtc | |
| parent | 01b0f50060923e89693bf155c677e4f665916b3f (diff) | |
| parent | b608b95753873a5073f550cca002c4bebf1a18f5 (diff) | |
| download | olio-uboot-2014.01-fb6440ee9b110b759ef61fd80bbd0df1bbf0f37b.tar.xz olio-uboot-2014.01-fb6440ee9b110b759ef61fd80bbd0df1bbf0f37b.zip | |
Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm:
  drivers/rtc: add Marvell Integrated RTC
  Armada100: Add Board Support for Marvell GuruPlug-Display
  Armada100: MFP macro naming correction
  arm: auto gen asm-offsets.h for mb86r0x
  spear: fix build errors for spear3xx/spear600 platforms
  cosmetic: arm: lib/board.c: Coding Style cleanup
  ARM: versatile: fix board support
  SMDKV310: Enable device tree support
  SMDKV310: MMC_SPL: Fix building when using "make O="
  arm: a320: enable tagged list support
  arm: a320: fix multiline comment style
  ARMv7: u8500_href: Add missing header to fix compiler warning
  Removed unused define, CONFIG_ARMV7.
  avr32: add grasshopper (ICnova AP7000) board
  AT91/SPI: fix atmel_dataflash_spi.c to allow building without warnings
  MAKEALL: remove AT91 boards that are in boards.cfg
  AT91: Makes AT91SAM9263-EK build correctly against u-boot-atmel/master
  AT91: Makes AT91SAM9263 SoC build correctly against u-boot-atmel/master
  AT91: Board fix for AT91SAM9261-EK
  AT91: SoC fix at91sam9261_matrix.h
  AT91: Makes AT91SAM9RL-EK build correctly against u-boot-atmel/master
  AT91: Makes AT91SAM9RL SoC build correctly against u-boot-atmel/master
  AT91: change common at91sam9261 files to compile with new scheme
  AT91: fix mistake in at91sam9260_devices.c(spi1_hw_init)
  a/a/c/arm920t/at91/reset.c: drop obsolete CONFIG_AT91RM9200_USART
  README: fix arm920t/at91 path
  net/eth.c: drop obsolete at91rm9200 support
  README.at91-soc: remove AT91(RM9200) joining notice
  a/a/c/arm920t/cpu.c: remove CONFIG_AT91_LEGACY warning
  MAKEALL: remove obsolete at91rm9200 soc
  ARM: remove obsolete at91rm9200
  omap4: clock init support for omap4460
  omap4: support TPS programming
  omap: reuse omap3 gpio support in omap4
  omap4: sdram init changes for omap4460
  omap4: add omap4460 revision detection
  mkimage: Add OMAP boot image support
  omap: add MMC and FAT support to SPL
  omap: add basic SPL support
  armv7: start.S: fixes and enhancements for SPL
  omap4: automatic sdram detection
  omap4: calculate EMIF register values
  omap4: add sdram init support
  omap4: add clock support
  omap4: add OMAP4430 revision check
  omap4: cleanup pin mux data
  omap4: utility function to identify the context of hw init
  DA8xx: fix LPSC constants
  DA8xx: switch an enum to defines for consistency
  DA8xx: add MMC/SD controller addresses
  DaVinci EMAC: declare function for all DA8xx CPUs
  DA8xx: add generic GPIO driver
  DaVinci: rename gpio_defs.h to gpio.h
  omap3evm: eth: Include functions only when necessary
  omap3evm: Update ethernet reset sequence for Rev.G board
  omap3evm: eth: split function setup_net_chip
  omap3: Include array definition only when it is used
  omap730p2: fix build breaks
  omap2420h4: fix build breaks
  omap1610inn: fix build breaks
  omap1510inn: fix build breaks
  omap5912osk: fix build breaks
  omap1610h2: fix build breaks
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/rtc/mvrtc.c | 124 | ||||
| -rw-r--r-- | drivers/rtc/mvrtc.h | 65 | 
3 files changed, 190 insertions, 0 deletions
| diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index e4be4a411..ca2774596 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -55,6 +55,7 @@ COBJS-$(CONFIG_MCFRTC) += mcfrtc.o  COBJS-$(CONFIG_RTC_MK48T59) += mk48t59.o  COBJS-$(CONFIG_RTC_MPC5200) += mpc5xxx.o  COBJS-$(CONFIG_RTC_MPC8xx) += mpc8xx.o +COBJS-$(CONFIG_RTC_MV) += mvrtc.o  COBJS-$(CONFIG_RTC_PCF8563) += pcf8563.o  COBJS-$(CONFIG_RTC_PL031) += pl031.o  COBJS-$(CONFIG_RTC_PT7C4338) += pt7c4338.o diff --git a/drivers/rtc/mvrtc.c b/drivers/rtc/mvrtc.c new file mode 100644 index 000000000..ccc573a3b --- /dev/null +++ b/drivers/rtc/mvrtc.c @@ -0,0 +1,124 @@ +/* + * Copyright (C) 2011 + * Jason Cooper <u-boot@lakedaemon.net> + * + * 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 + */ + +/* + * Date & Time support for Marvell Integrated RTC + */ + +#include <common.h> +#include <command.h> +#include <rtc.h> +#include "mvrtc.h" + +/* This RTC does not support century, so we assume 20 */ +#define CENTURY 20 + +int rtc_get(struct rtc_time *t) +{ +	u32 time; +	u32 date; +	struct mvrtc_registers *mvrtc_regs; + +	mvrtc_regs = (struct mvrtc_registers *)KW_RTC_BASE; + +	/* read the time register */ +	time = readl(&mvrtc_regs->time); + +	/* read the date register */ +	date = readl(&mvrtc_regs->date); + +	/* test for 12 hour clock (can't tell if it's am/pm) */ +	if (time & MVRTC_HRFMT_MSK) { +		printf("Error: RTC in 12 hour mode, can't determine AM/PM.\n"); +		return -1; +	} + +	/* time */ +	t->tm_sec  = bcd2bin((time >> MVRTC_SEC_SFT)  & MVRTC_SEC_MSK); +	t->tm_min  = bcd2bin((time >> MVRTC_MIN_SFT)  & MVRTC_MIN_MSK); +	t->tm_hour = bcd2bin((time >> MVRTC_HOUR_SFT) & MVRTC_HOUR_MSK); +	t->tm_wday = bcd2bin((time >> MVRTC_DAY_SFT)  & MVRTC_DAY_MSK); +	t->tm_wday--; + +	/* date */ +	t->tm_mday = bcd2bin((date >> MVRTC_DATE_SFT) & MVRTC_DATE_MSK); +	t->tm_mon  = bcd2bin((date >> MVRTC_MON_SFT)  & MVRTC_MON_MSK); +	t->tm_year = bcd2bin((date >> MVRTC_YEAR_SFT) & MVRTC_YEAR_MSK); +	t->tm_year += CENTURY * 100; + +	/* not supported in this RTC */ +	t->tm_yday  = 0; +	t->tm_isdst = 0; + +	return 0; +} + +int rtc_set(struct rtc_time *t) +{ +	u32 time = 0; /* sets hour format bit to zero, 24hr format. */ +	u32 date = 0; +	struct mvrtc_registers *mvrtc_regs; + +	mvrtc_regs = (struct mvrtc_registers *)KW_RTC_BASE; + +	/* check that this code isn't 80+ years old ;-) */ +	if ((t->tm_year / 100) != CENTURY) +		printf("Warning: Only century %d supported.\n", CENTURY); + +	/* time */ +	time |= (bin2bcd(t->tm_sec)      & MVRTC_SEC_MSK)  << MVRTC_SEC_SFT; +	time |= (bin2bcd(t->tm_min)      & MVRTC_MIN_MSK)  << MVRTC_MIN_SFT; +	time |= (bin2bcd(t->tm_hour)     & MVRTC_HOUR_MSK) << MVRTC_HOUR_SFT; +	time |= (bin2bcd(t->tm_wday + 1) & MVRTC_DAY_MSK)  << MVRTC_DAY_SFT; + +	/* date */ +	date |= (bin2bcd(t->tm_mday)       & MVRTC_DATE_MSK) << MVRTC_DATE_SFT; +	date |= (bin2bcd(t->tm_mon)        & MVRTC_MON_MSK)  << MVRTC_MON_SFT; +	date |= (bin2bcd(t->tm_year % 100) & MVRTC_YEAR_MSK) << MVRTC_YEAR_SFT; + +	/* write the time register */ +	writel(time, &mvrtc_regs->time); + +	/* write the date register */ +	writel(date, &mvrtc_regs->date); + +	return 0; +} + +void rtc_reset(void) +{ +	u32 time; +	u32 sec; +	struct mvrtc_registers *mvrtc_regs; + +	mvrtc_regs = (struct mvrtc_registers *)KW_RTC_BASE; + +	/* no init routine for this RTC needed, just check that it's working */ +	time = readl(&mvrtc_regs->time); +	sec  = bcd2bin((time >> MVRTC_SEC_SFT) & MVRTC_SEC_MSK); +	udelay(1000000); +	time = readl(&mvrtc_regs->time); + +	if (sec == bcd2bin((time >> MVRTC_SEC_SFT) & MVRTC_SEC_MSK)) +		printf("Error: RTC did not increment.\n"); +} diff --git a/drivers/rtc/mvrtc.h b/drivers/rtc/mvrtc.h new file mode 100644 index 000000000..b9d5c6fc3 --- /dev/null +++ b/drivers/rtc/mvrtc.h @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2011 + * Jason Cooper <u-boot@lakedaemon.net> + * + * 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 + */ + +/* + * Date & Time support for Marvell Integrated RTC + */ + +#ifndef _MVRTC_H_ +#define _MVRTC_H_ + +#include <asm/arch/kirkwood.h> +#include <compiler.h> + +/* RTC registers */ +struct mvrtc_registers { +	u32 time; +	u32 date; +}; + +/* time register */ +#define MVRTC_SEC_SFT		0 +#define MVRTC_SEC_MSK		0x7f +#define MVRTC_MIN_SFT		8 +#define MVRTC_MIN_MSK		0x7f +#define MVRTC_HOUR_SFT		16 +#define MVRTC_HOUR_MSK		0x3f +#define MVRTC_DAY_SFT		24 +#define MVRTC_DAY_MSK		0x7 + +/* + * Hour format bit + *   1 = 12 hour clock + *   0 = 24 hour clock + */ +#define MVRTC_HRFMT_MSK		0x00400000 + +/* date register */ +#define MVRTC_DATE_SFT		0 +#define MVRTC_DATE_MSK		0x3f +#define MVRTC_MON_SFT		8 +#define MVRTC_MON_MSK		0x1f +#define MVRTC_YEAR_SFT		16 +#define MVRTC_YEAR_MSK		0xff + +#endif |