summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/hwmon/Makefile1
-rw-r--r--drivers/hwmon/ds1775.c2
-rw-r--r--drivers/hwmon/lm73.c181
-rw-r--r--drivers/rtc/Makefile2
-rw-r--r--drivers/rtc/m41t60.c261
-rw-r--r--drivers/rtc/x1205.c178
6 files changed, 624 insertions, 1 deletions
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index cebb2ba635..32e3f44a91 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -34,6 +34,7 @@ COBJS-y += adm1021.o
COBJS-y += ds1621.o
COBJS-y += ds1722.o
COBJS-y += ds1775.o
+COBJS-y += lm73.o
COBJS-y += lm75.o
COBJS-y += lm81.o
diff --git a/drivers/hwmon/ds1775.c b/drivers/hwmon/ds1775.c
index e44cee3279..0fbb0b42a7 100644
--- a/drivers/hwmon/ds1775.c
+++ b/drivers/hwmon/ds1775.c
@@ -25,7 +25,7 @@
#include <i2c.h>
#include <dtt.h>
-#define DTT_I2C_DEV_CODE 0x49 /* Dallas Semi's DS1775 device code */
+#define DTT_I2C_DEV_CODE CFG_I2C_DTT_ADDR /* Dallas Semi's DS1775 device code */
int dtt_read(int sensor, int reg)
{
diff --git a/drivers/hwmon/lm73.c b/drivers/hwmon/lm73.c
new file mode 100644
index 0000000000..f9ae01297b
--- /dev/null
+++ b/drivers/hwmon/lm73.c
@@ -0,0 +1,181 @@
+/*
+ * (C) Copyright 2007
+ * Larry Johnson, lrj@acm.org
+ *
+ * based on dtt/lm75.c which is ...
+ *
+ * (C) Copyright 2001
+ * Bill Hunter, Wave 7 Optics, williamhunter@mediaone.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
+ */
+
+/*
+ * National Semiconductor LM73 Temperature Sensor
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_DTT_LM73
+#if !defined(CFG_EEPROM_PAGE_WRITE_ENABLE) || \
+ (CFG_EEPROM_PAGE_WRITE_BITS < 1)
+# error "CFG_EEPROM_PAGE_WRITE_ENABLE must be defined and CFG_EEPROM_PAGE_WRITE_BITS must be greater than 1 to use CONFIG_DTT_LM73"
+#endif
+
+#include <i2c.h>
+#include <dtt.h>
+
+/*
+ * Device code
+ */
+#define DTT_I2C_DEV_CODE 0x48 /* National Semi's LM73 device */
+
+int dtt_read(int sensor, int reg)
+{
+ int dlen;
+ uchar data[2];
+
+ /*
+ * Validate 'reg' param and get register size.
+ */
+ switch (reg) {
+ case DTT_CONFIG:
+ case DTT_CONTROL:
+ dlen = 1;
+ break;
+ case DTT_READ_TEMP:
+ case DTT_TEMP_HIGH:
+ case DTT_TEMP_LOW:
+ case DTT_ID:
+ dlen = 2;
+ break;
+ default:
+ return -1;
+ }
+ /*
+ * Calculate sensor address and register.
+ */
+ sensor = DTT_I2C_DEV_CODE + (sensor & 0x07); /* calculate LM73 addr */
+ /*
+ * Now try to read the register.
+ */
+ if (i2c_read(sensor, reg, 1, data, dlen) != 0)
+ return -1;
+ /*
+ * Handle 2 byte result.
+ */
+ if (2 == dlen)
+ return ((int)((short)data[1] + (((short)data[0]) << 8)));
+
+ return (int)data[0];
+} /* dtt_read() */
+
+int dtt_write(int sensor, int reg, int val)
+{
+ int dlen;
+ uchar data[2];
+
+ /*
+ * Validate 'reg' param and handle register size
+ */
+ switch (reg) {
+ case DTT_CONFIG:
+ case DTT_CONTROL:
+ dlen = 1;
+ data[0] = (char)(val & 0xff);
+ break;
+ case DTT_TEMP_HIGH:
+ case DTT_TEMP_LOW:
+ dlen = 2;
+ data[0] = (char)((val >> 8) & 0xff); /* MSB first */
+ data[1] = (char)(val & 0xff);
+ break;
+ default:
+ return -1;
+ }
+ /*
+ * Calculate sensor address and register.
+ */
+ sensor = DTT_I2C_DEV_CODE + (sensor & 0x07); /* calculate LM73 addr */
+ /*
+ * Write value to register.
+ */
+ return i2c_write(sensor, reg, 1, data, dlen) != 0;
+} /* dtt_write() */
+
+static int _dtt_init(int sensor)
+{
+ int val;
+
+ /*
+ * Validate the Identification register
+ */
+ if (0x0190 != dtt_read(sensor, DTT_ID))
+ return 1;
+ /*
+ * Setup THIGH (upper-limit) and TLOW (lower-limit) registers
+ */
+ val = CFG_DTT_MAX_TEMP << 7;
+ if (dtt_write(sensor, DTT_TEMP_HIGH, val))
+ return 1;
+
+ val = CFG_DTT_MIN_TEMP << 7;
+ if (dtt_write(sensor, DTT_TEMP_LOW, val))
+ return 1;
+ /*
+ * Setup configuraton register
+ */
+ /* config = alert active low, disabled, and reset */
+ val = 0x64;
+ if (dtt_write(sensor, DTT_CONFIG, val))
+ return 1;
+ /*
+ * Setup control/status register
+ */
+ /* control = temp resolution 0.25C */
+ val = 0x00;
+ if (dtt_write(sensor, DTT_CONTROL, val))
+ return 1;
+
+ dtt_read(sensor, DTT_CONTROL); /* clear temperature flags */
+ return 0;
+} /* _dtt_init() */
+
+int dtt_init(void)
+{
+ int i;
+ unsigned char sensors[] = CONFIG_DTT_SENSORS;
+ const char *const header = "DTT: ";
+
+ for (i = 0; i < sizeof(sensors); i++) {
+ if (_dtt_init(sensors[i]) != 0)
+ printf("%s%d FAILED INIT\n", header, i + 1);
+ else
+ printf("%s%d is %i C\n", header, i + 1,
+ dtt_get_temp(sensors[i]));
+ }
+ return 0;
+} /* dtt_init() */
+
+int dtt_get_temp(int sensor)
+{
+ return (dtt_read(sensor, DTT_READ_TEMP) + 0x0040) >> 7;
+} /* dtt_get_temp() */
+
+#endif /* CONFIG_DTT_LM73 */
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 4a22b0d94f..e5ee611350 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -40,6 +40,7 @@ COBJS-y += ds164x.o
COBJS-y += ds174x.o
COBJS-y += ds3231.o
COBJS-y += m41t11.o
+COBJS-y += m41t60.o
COBJS-y += max6900.o
COBJS-y += m48t35ax.o
COBJS-y += mc146818.o
@@ -50,6 +51,7 @@ COBJS-y += pcf8563.o
COBJS-y += s3c24x0_rtc.o
COBJS-y += rs5c372.o
COBJS-y += mcfrtc.o
+COBJS-y += x1205.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/rtc/m41t60.c b/drivers/rtc/m41t60.c
new file mode 100644
index 0000000000..7c80143e68
--- /dev/null
+++ b/drivers/rtc/m41t60.c
@@ -0,0 +1,261 @@
+/*
+ * (C) Copyright 2007
+ * Larry Johnson, lrj@acm.org
+ *
+ * based on rtc/m41t11.c which is ...
+ *
+ * (C) Copyright 2002
+ * Andrew May, Viasat Inc, amay@viasat.com
+ *
+ * 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
+ */
+
+/*
+ * STMicroelectronics M41T60 serial access real-time clock
+ */
+
+/* #define DEBUG 1 */
+
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+#include <i2c.h>
+
+#if defined(CONFIG_RTC_M41T60) && defined(CFG_I2C_RTC_ADDR) && \
+ defined(CONFIG_CMD_DATE)
+
+static unsigned bcd2bin(uchar n)
+{
+ return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F));
+}
+
+static unsigned char bin2bcd(unsigned int n)
+{
+ return (((n / 10) << 4) | (n % 10));
+}
+
+/*
+ * Convert between century and "century bits" (CB1 and CB0). These routines
+ * assume years are in the range 1900 - 2299.
+ */
+
+static unsigned char year2cb(unsigned const year)
+{
+ if (year < 1900 || year >= 2300)
+ printf("M41T60 RTC: year %d out of range\n", year);
+
+ return (year / 100) & 0x3;
+}
+
+static unsigned cb2year(unsigned const cb)
+{
+ return 1900 + 100 * ((cb + 1) & 0x3);
+}
+
+/*
+ * 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 0x0
+#define RTC_MIN 0x1
+#define RTC_HOUR 0x2
+#define RTC_DAY 0x3
+#define RTC_DATE 0x4
+#define RTC_MONTH 0x5
+#define RTC_YEAR 0x6
+
+#define RTC_REG_CNT 7
+
+#define RTC_CTRL 0x7
+
+#if defined(DEBUG)
+static void rtc_dump(char const *const label)
+{
+ uchar data[8];
+
+ if (i2c_read(CFG_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {
+ printf("I2C read failed in rtc_dump()\n");
+ return;
+ }
+ printf("RTC dump %s: %02X-%02X-%02X-%02X-%02X-%02X-%02X-%02X\n",
+ label, data[0], data[1], data[2], data[3],
+ data[4], data[5], data[6], data[7]);
+}
+#else
+#define rtc_dump(label)
+#endif
+
+static uchar *rtc_validate(void)
+{
+ /*
+ * This routine uses the OUT bit and the validity of the time values to
+ * determine whether there has been an initial power-up since the last
+ * time the routine was run. It assumes that the OUT bit is not being
+ * used for any other purpose.
+ */
+ static const uchar daysInMonth[0x13] = {
+ 0x00, 0x31, 0x29, 0x31, 0x30, 0x31, 0x30, 0x31,
+ 0x31, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x31, 0x30, 0x31
+ };
+ static uchar data[8];
+ uchar min, date, month, years;
+
+ rtc_dump("begin validate");
+ if (i2c_read(CFG_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {
+ printf("I2C read failed in rtc_validate()\n");
+ return 0;
+ }
+ /*
+ * If the OUT bit is "1", there has been a loss of power, so stop the
+ * oscillator so it can be "kick-started" as per data sheet.
+ */
+ if (0x00 != (data[RTC_CTRL] & 0x80)) {
+ printf("M41T60 RTC clock lost power.\n");
+ data[RTC_SEC] = 0x80;
+ if (i2c_write(CFG_I2C_RTC_ADDR, RTC_SEC, 1, data, 1)) {
+ printf("I2C write failed in rtc_validate()\n");
+ return 0;
+ }
+ }
+ /*
+ * If the oscillator is stopped or the date is invalid, then reset the
+ * OUT bit to "0", reset the date registers, and start the oscillator.
+ */
+ min = data[RTC_MIN] & 0x7F;
+ date = data[RTC_DATE];
+ month = data[RTC_MONTH] & 0x3F;
+ years = data[RTC_YEAR];
+ if (0x59 < data[RTC_SEC] || 0x09 < (data[RTC_SEC] & 0x0F) ||
+ 0x59 < min || 0x09 < (min & 0x0F) ||
+ 0x23 < data[RTC_HOUR] || 0x09 < (data[RTC_HOUR] & 0x0F) ||
+ 0x07 < data[RTC_DAY] || 0x00 == data[RTC_DAY] ||
+ 0x12 < month ||
+ 0x99 < years || 0x09 < (years & 0x0F) ||
+ daysInMonth[month] < date || 0x09 < (date & 0x0F) || 0x00 == date ||
+ (0x29 == date && 0x02 == month &&
+ ((0x00 != (years & 0x03)) ||
+ (0x00 == years && 0x00 != (data[RTC_MONTH] & 0xC0))))) {
+ printf("Resetting M41T60 RTC clock.\n");
+ /*
+ * Set to 00:00:00 1900-01-01 (Monday)
+ */
+ data[RTC_SEC] = 0x00;
+ data[RTC_MIN] &= 0x80; /* preserve OFIE bit */
+ data[RTC_HOUR] = 0x00;
+ data[RTC_DAY] = 0x02;
+ data[RTC_DATE] = 0x01;
+ data[RTC_MONTH] = 0xC1;
+ data[RTC_YEAR] = 0x00;
+ data[RTC_CTRL] &= 0x7F; /* reset OUT bit */
+
+ if (i2c_write(CFG_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {
+ printf("I2C write failed in rtc_validate()\n");
+ return 0;
+ }
+ }
+ return data;
+}
+
+void rtc_get(struct rtc_time *tmp)
+{
+ uchar const *const data = rtc_validate();
+
+ if (!data)
+ return;
+
+ tmp->tm_sec = bcd2bin(data[RTC_SEC] & 0x7F);
+ tmp->tm_min = bcd2bin(data[RTC_MIN] & 0x7F);
+ tmp->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3F);
+ tmp->tm_mday = bcd2bin(data[RTC_DATE] & 0x3F);
+ tmp->tm_mon = bcd2bin(data[RTC_MONTH] & 0x1F);
+ tmp->tm_year = cb2year(data[RTC_MONTH] >> 6) + bcd2bin(data[RTC_YEAR]);
+ tmp->tm_wday = bcd2bin(data[RTC_DAY] & 0x07) - 1;
+ 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);
+}
+
+void rtc_set(struct rtc_time *tmp)
+{
+ uchar *const data = rtc_validate();
+
+ if (!data)
+ return;
+
+ 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] = (data[RTC_SEC] & 0x80) | (bin2bcd(tmp->tm_sec) & 0x7F);
+ data[RTC_MIN] = (data[RTC_MIN] & 0X80) | (bin2bcd(tmp->tm_min) & 0X7F);
+ data[RTC_HOUR] = bin2bcd(tmp->tm_hour) & 0x3F;
+ data[RTC_DATE] = bin2bcd(tmp->tm_mday) & 0x3F;
+ data[RTC_MONTH] = bin2bcd(tmp->tm_mon) & 0x1F;
+ data[RTC_YEAR] = bin2bcd(tmp->tm_year % 100);
+ data[RTC_MONTH] |= year2cb(tmp->tm_year) << 6;
+ data[RTC_DAY] = bin2bcd(tmp->tm_wday + 1) & 0x07;
+ if (i2c_write(CFG_I2C_RTC_ADDR, 0, 1, data, RTC_REG_CNT)) {
+ printf("I2C write failed in rtc_set()\n");
+ return;
+ }
+}
+
+void rtc_reset(void)
+{
+ uchar *const data = rtc_validate();
+ char const *const s = getenv("rtccal");
+
+ if (!data)
+ return;
+
+ rtc_dump("begin reset");
+ /*
+ * If environmental variable "rtccal" is present, it must be a hex value
+ * between 0x00 and 0x3F, inclusive. The five least-significan bits
+ * represent the calibration magnitude, and the sixth bit the sign bit.
+ * If these do not match the contents of the hardware register, that
+ * register is updated. The value 0x00 imples no correction. Consult
+ * the M41T60 documentation for further details.
+ */
+ if (s) {
+ unsigned long const l = simple_strtoul(s, 0, 16);
+
+ if (l <= 0x3F) {
+ if ((data[RTC_CTRL] & 0x3F) != l) {
+ printf("Setting RTC calibration to 0x%02X\n",
+ l);
+ data[RTC_CTRL] &= 0xC0;
+ data[RTC_CTRL] |= (uchar) l;
+ }
+ } else
+ printf("environment parameter \"rtccal\" not valid: "
+ "ignoring\n");
+ }
+ /*
+ * Turn off frequency test.
+ */
+ data[RTC_CTRL] &= 0xBF;
+ if (i2c_write(CFG_I2C_RTC_ADDR, RTC_CTRL, 1, data + RTC_CTRL, 1)) {
+ printf("I2C write failed in rtc_reset()\n");
+ return;
+ }
+ rtc_dump("end reset");
+}
+#endif /* CONFIG_RTC_M41T60 && CFG_I2C_RTC_ADDR && CONFIG_CMD_DATE */
diff --git a/drivers/rtc/x1205.c b/drivers/rtc/x1205.c
new file mode 100644
index 0000000000..319f0512ca
--- /dev/null
+++ b/drivers/rtc/x1205.c
@@ -0,0 +1,178 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * based on a the Linux rtc-x1207.c driver which is:
+ * Copyright 2004 Karen Spearel
+ * Copyright 2005 Alessandro Zummo
+ *
+ * Information and datasheet:
+ * http://www.intersil.com/cda/deviceinfo/0,1477,X1205,00.html
+ *
+ * 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 Xicor/Intersil X1205 RTC
+ */
+
+/* #define DEBUG */
+
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+#include <i2c.h>
+#include <bcd.h>
+
+#if defined(CONFIG_RTC_X1205) && defined(CONFIG_CMD_DATE)
+
+#define CCR_SEC 0
+#define CCR_MIN 1
+#define CCR_HOUR 2
+#define CCR_MDAY 3
+#define CCR_MONTH 4
+#define CCR_YEAR 5
+#define CCR_WDAY 6
+#define CCR_Y2K 7
+
+#define X1205_REG_SR 0x3F /* status register */
+#define X1205_REG_Y2K 0x37
+#define X1205_REG_DW 0x36
+#define X1205_REG_YR 0x35
+#define X1205_REG_MO 0x34
+#define X1205_REG_DT 0x33
+#define X1205_REG_HR 0x32
+#define X1205_REG_MN 0x31
+#define X1205_REG_SC 0x30
+#define X1205_REG_DTR 0x13
+#define X1205_REG_ATR 0x12
+#define X1205_REG_INT 0x11
+#define X1205_REG_0 0x10
+#define X1205_REG_Y2K1 0x0F
+#define X1205_REG_DWA1 0x0E
+#define X1205_REG_YRA1 0x0D
+#define X1205_REG_MOA1 0x0C
+#define X1205_REG_DTA1 0x0B
+#define X1205_REG_HRA1 0x0A
+#define X1205_REG_MNA1 0x09
+#define X1205_REG_SCA1 0x08
+#define X1205_REG_Y2K0 0x07
+#define X1205_REG_DWA0 0x06
+#define X1205_REG_YRA0 0x05
+#define X1205_REG_MOA0 0x04
+#define X1205_REG_DTA0 0x03
+#define X1205_REG_HRA0 0x02
+#define X1205_REG_MNA0 0x01
+#define X1205_REG_SCA0 0x00
+
+#define X1205_CCR_BASE 0x30 /* Base address of CCR */
+#define X1205_ALM0_BASE 0x00 /* Base address of ALARM0 */
+
+#define X1205_SR_RTCF 0x01 /* Clock failure */
+#define X1205_SR_WEL 0x02 /* Write Enable Latch */
+#define X1205_SR_RWEL 0x04 /* Register Write Enable */
+
+#define X1205_DTR_DTR0 0x01
+#define X1205_DTR_DTR1 0x02
+#define X1205_DTR_DTR2 0x04
+
+#define X1205_HR_MIL 0x80 /* Set in ccr.hour for 24 hr mode */
+
+static void rtc_write(int reg, u8 val)
+{
+ i2c_write(CFG_I2C_RTC_ADDR, reg, 2, &val, 1);
+}
+
+/*
+ * In the routines that deal directly with the x1205 hardware, we use
+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch
+ * Epoch is initialized as 2000. Time is set to UTC.
+ */
+void rtc_get(struct rtc_time *tm)
+{
+ u8 buf[8];
+
+ i2c_read(CFG_I2C_RTC_ADDR, X1205_CCR_BASE, 2, buf, 8);
+
+ debug("%s: raw read data - sec=%02x, min=%02x, hr=%02x, "
+ "mday=%02x, mon=%02x, year=%02x, wday=%02x, y2k=%02x\n",
+ __FUNCTION__,
+ buf[0], buf[1], buf[2], buf[3],
+ buf[4], buf[5], buf[6], buf[7]);
+
+ tm->tm_sec = BCD2BIN(buf[CCR_SEC]);
+ tm->tm_min = BCD2BIN(buf[CCR_MIN]);
+ tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */
+ tm->tm_mday = BCD2BIN(buf[CCR_MDAY]);
+ tm->tm_mon = BCD2BIN(buf[CCR_MONTH]); /* mon is 0-11 */
+ tm->tm_year = BCD2BIN(buf[CCR_YEAR])
+ + (BCD2BIN(buf[CCR_Y2K]) * 100);
+ tm->tm_wday = buf[CCR_WDAY];
+
+ debug("%s: tm is secs=%d, mins=%d, hours=%d, "
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __FUNCTION__,
+ tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+}
+
+void rtc_set(struct rtc_time *tm)
+{
+ int i;
+ u8 buf[8];
+
+ debug("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
+ tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_wday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+ buf[CCR_SEC] = BIN2BCD(tm->tm_sec);
+ buf[CCR_MIN] = BIN2BCD(tm->tm_min);
+
+ /* set hour and 24hr bit */
+ buf[CCR_HOUR] = BIN2BCD(tm->tm_hour) | X1205_HR_MIL;
+
+ buf[CCR_MDAY] = BIN2BCD(tm->tm_mday);
+
+ /* month, 1 - 12 */
+ buf[CCR_MONTH] = BIN2BCD(tm->tm_mon);
+
+ /* year, since the rtc epoch*/
+ buf[CCR_YEAR] = BIN2BCD(tm->tm_year % 100);
+ buf[CCR_WDAY] = tm->tm_wday & 0x07;
+ buf[CCR_Y2K] = BIN2BCD(tm->tm_year / 100);
+
+ /* this sequence is required to unlock the chip */
+ rtc_write(X1205_REG_SR, X1205_SR_WEL);
+ rtc_write(X1205_REG_SR, X1205_SR_WEL | X1205_SR_RWEL);
+
+ /* write register's data */
+ for (i = 0; i < 8; i++)
+ rtc_write(X1205_CCR_BASE + i, buf[i]);
+
+ rtc_write(X1205_REG_SR, 0);
+}
+
+void rtc_reset(void)
+{
+ /*
+ * Nothing to do
+ */
+}
+
+#endif
generated by cgit (git 2.34.1) at 2024-12-26 10:46:55 +0000