[U-Boot] RFC [PATCH 1/5] drivers/rtc: add Marvell Integrated RTC.
Prafulla Wadaskar
prafulla at marvell.com
Wed Jul 27 20:12:35 CEST 2011
> -----Original Message-----
> From: Jason Cooper [mailto:u-boot at lakedaemon.net]
> Sent: Wednesday, July 27, 2011 2:49 AM
> To: clint at debian.org; wd at denx.de; Prafulla Wadaskar
> Cc: u-boot at lists.denx.de; Prabhanjan Sarnaik; Ashish Karkare; Siddarth
> Gore; bdale at gag.com; Jason Cooper
> Subject: RFC [PATCH 1/5] drivers/rtc: add Marvell Integrated RTC.
>
>
> Signed-off-by: Jason Cooper <u-boot at lakedaemon.net>
> ---
> drivers/rtc/Makefile | 1 +
> drivers/rtc/mvinteg_rtc.c | 151
Filename mvrtc.c sounds more relevent
> +++++++++++++++++++++++++++++++++++++++++++++
> drivers/rtc/mvinteg_rtc.h | 89 ++++++++++++++++++++++++++
> 3 files changed, 241 insertions(+), 0 deletions(-)
> create mode 100644 drivers/rtc/mvinteg_rtc.c
> create mode 100644 drivers/rtc/mvinteg_rtc.h
>
> diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
> index e4be4a4..ed63e9c 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-$(CONFIG_RTC_MVINTEG) += mvinteg_rtc.o
> COBJS-$(CONFIG_RTC_PCF8563) += pcf8563.o
> COBJS-$(CONFIG_RTC_PL031) += pl031.o
> COBJS-$(CONFIG_RTC_PT7C4338) += pt7c4338.o
> diff --git a/drivers/rtc/mvinteg_rtc.c b/drivers/rtc/mvinteg_rtc.c
> new file mode 100644
> index 0000000..295e4f7
> --- /dev/null
> +++ b/drivers/rtc/mvinteg_rtc.c
> @@ -0,0 +1,151 @@
> +/*
> + * Copyright (C) 2011
> + * Jason Cooper <u-boot at 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 "mvinteg_rtc.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;
> + u8 tens;
> + u8 single;
> +
> + /* read the time register */
> + time = MV_REG_READ(MVINTEG_RTCTIME_REG);
> +
> + /* read the date register */
> + date = MV_REG_READ(MVINTEG_RTCDATE_REG);
> +
> + /* seconds */
> + tens = ((time & MVINTEG_10SEC_MSK) >> MVINTEG_10SEC_SFT);
> + single = ((time & MVINTEG_SEC_MSK) >> MVINTEG_SEC_SFT);
> + t->tm_sec = 10 * tens + single;
> +
> + /* minutes */
> + tens = ((time & MVINTEG_10MIN_MSK) >> MVINTEG_10MIN_SFT);
> + single = ((time & MVINTEG_MIN_MSK) >> MVINTEG_MIN_SFT);
> + t->tm_min = 10 * tens + single;
> +
> + /* hours */
> + tens = ((time & MVINTEG_10HOUR_MSK) >> MVINTEG_10HOUR_SFT);
> + single = ((time & MVINTEG_HOUR_MSK) >> MVINTEG_HOUR_SFT);
> + t->tm_hour = 10 * tens + single;
> +
> + /* day */
> + t->tm_wday = ((time & MVINTEG_DAY_MSK) >> MVINTEG_DAY_SFT);
> + t->tm_wday--;
> +
> + /* date */
> + tens = ((date & MVINTEG_10DATE_MSK) >> MVINTEG_10DATE_SFT);
> + single = ((date & MVINTEG_DATE_MSK) >> MVINTEG_DATE_SFT);
> + t->tm_mday = 10 * tens + single;
> +
> + /* month */
> + tens = ((date & MVINTEG_10MON_MSK) >> MVINTEG_10MON_SFT);
> + single = ((date & MVINTEG_MON_MSK) >> MVINTEG_MON_SFT);
> + t->tm_mon = 10 * tens + single;
> +
> + /* year */
> + tens = ((date & MVINTEG_10YEAR_MSK) >> MVINTEG_10YEAR_SFT);
> + single = ((date & MVINTEG_YEAR_MSK) >> MVINTEG_YEAR_SFT);
> + t->tm_year = (CENTURY * 100) + (10 * tens) + single;
> +
> + /* 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;
> + u32 date = 0;
> + u32 tens;
> + u32 single;
> +
> + /* seconds */
> + tens = t->tm_sec / 10;
> + single = t->tm_sec % 10;
> + time |= ((tens << MVINTEG_10SEC_SFT) & MVINTEG_10SEC_MSK) |
> + ((single << MVINTEG_SEC_SFT) & MVINTEG_SEC_MSK);
> +
> + /* minutes */
> + tens = t->tm_min / 10;
> + single = t->tm_min % 10;
> + time |= ((tens << MVINTEG_10MIN_SFT) & MVINTEG_10MIN_MSK) |
> + ((single << MVINTEG_MIN_SFT) & MVINTEG_MIN_MSK);
> +
> + /* hours (24) */
> + tens = t->tm_hour / 10;
> + single = t->tm_hour % 10;
> + time |= ((tens << MVINTEG_10HOUR_SFT) & MVINTEG_10HOUR_MSK) |
> + ((single << MVINTEG_HOUR_SFT) & MVINTEG_HOUR_MSK);
> +
> + /* day */
> + single = t->tm_wday + 1;
> + time |= ((single << MVINTEG_DAY_SFT) & MVINTEG_DAY_MSK);
> +
> + /* date */
> + tens = t->tm_mday / 10;
> + single = t->tm_mday % 10;
> + date |= ((tens << MVINTEG_10DATE_SFT) & MVINTEG_10DATE_MSK) |
> + ((single << MVINTEG_DATE_SFT) & MVINTEG_DATE_MSK);
> +
> + /* month */
> + tens = t->tm_mon / 10;
> + single = t->tm_mon % 10;
> + date |= ((tens << MVINTEG_10MON_SFT) & MVINTEG_10MON_MSK) |
> + ((single << MVINTEG_MON_SFT) & MVINTEG_MON_MSK);
> +
> + /* year */
> + if ((t->tm_year / 100) != CENTURY)
> + printf("Warning: Only century %d supported.\n", CENTURY);
> + tens = (t->tm_year % 100) / 10;
> + single = (t->tm_year % 100) % 10;
> + date |= ((tens << MVINTEG_10YEAR_SFT) & MVINTEG_10YEAR_MSK) |
> + ((single << MVINTEG_YEAR_SFT) & MVINTEG_YEAR_MSK);
> +
> + /* write the time register */
> + MV_REG_WRITE(MVINTEG_RTCTIME_REG, time);
> +
> + /* write the date register */
> + MV_REG_WRITE(MVINTEG_RTCDATE_REG, date);
> +
> + return 0;
> +}
> +
> +void rtc_reset(void)
> +{
> + /* no init routine for this RTC needed */
> +}
> diff --git a/drivers/rtc/mvinteg_rtc.h b/drivers/rtc/mvinteg_rtc.h
> new file mode 100644
> index 0000000..522c5d0
> --- /dev/null
> +++ b/drivers/rtc/mvinteg_rtc.h
> @@ -0,0 +1,89 @@
> +/*
> + * Copyright (C) 2011
> + * Jason Cooper <u-boot at 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 _MVINTEG_RTC_H_
> +#define _MVINTEG_RTC_H_
> +
> +#include <compiler.h>
> +
> +#define INTERNAL_REG_BASE_ADDR 0xf1000000
This must go in kirkood.h
> +
> +/* register operations macros */
> +#define MV_REG_READ(offset) \
> + le32_to_cpu( \
> + *(volatile unsigned int *)(INTERNAL_REG_BASE_ADDR + offset))
> +
> +#define MV_REG_WRITE(offset, data) \
> + do { \
> + *(volatile unsigned int *)(INTERNAL_REG_BASE_ADDR + offset) = \
> + cpu_to_le32(data); \
> + } while (0);
> +
> +/* RTC registers */
> +#define MVINTEG_RTCTIME_REG 0x10300
> +#define MVINTEG_RTCDATE_REG 0x10304
NAK, please use c-strut for register definations
> +
> +/* time register */
> +#define MVINTEG_SEC_SFT 0
> +#define MVINTEG_SEC_MSK (0xf << MVINTEG_SEC_SFT)
> +#define MVINTEG_10SEC_SFT 4
> +#define MVINTEG_10SEC_MSK (0x7 << MVINTEG_10SEC_SFT)
> +
> +#define MVINTEG_MIN_SFT 8
> +#define MVINTEG_MIN_MSK (0xf << MVINTEG_MIN_SFT)
> +#define MVINTEG_10MIN_SFT 12
> +#define MVINTEG_10MIN_MSK (0x7 << MVINTEG_10MIN_SFT)
> +
> +#define MVINTEG_HOUR_SFT 16
> +#define MVINTEG_HOUR_MSK (0xf << MVINTEG_HOUR_SFT)
> +#define MVINTEG_10HOUR_SFT 20
> +#define MVINTEG_10HOUR_MSK (0x3 << MVINTEG_10HOUR_SFT)
> +
> +#define MVINTEG_HRFMT_SFT 22
> +#define MVINTEG_HRFMT12_MSK (0x1 << MVINTEG_HRFMT_SFT)
> +#define MVINTEG_HRFMT24_MSK (0x0 << MVINTEG_HRFMT_SFT)
> +
> +#define MVINTEG_DAY_SFT 24
> +#define MVINTEG_DAY_MSK (0x7 << MVINTEG_DAY_SFT)
> +
> +/* date register */
> +#define MVINTEG_DATE_SFT 0
> +#define MVINTEG_DATE_MSK (0xf << MVINTEG_DATE_SFT)
> +#define MVINTEG_10DATE_SFT 4
> +#define MVINTEG_10DATE_MSK (0x3 << MVINTEG_10DATE_SFT)
> +
> +#define MVINTEG_MON_SFT 8
> +#define MVINTEG_MON_MSK (0xf << MVINTEG_MON_SFT)
> +#define MVINTEG_10MON_SFT 12
> +#define MVINTEG_10MON_MSK (0x1 << MVINTEG_10MON_SFT)
> +
> +#define MVINTEG_YEAR_SFT 16
> +#define MVINTEG_YEAR_MSK (0xf << MVINTEG_YEAR_SFT)
> +#define MVINTEG_10YEAR_SFT 20
> +#define MVINTEG_10YEAR_MSK (0xf << MVINTEG_10YEAR_SFT)
> +
> +#endif
> --
Regards..
Prafulla . .
> 1.7.0.4
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