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[ARM] rtc-pcf8583: correct month and year offsets 

No, today is not 4th April 3907, it's 4th March 2007.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Russell King 2007-03-04 20:13:13 +00:00 committed by Russell King
parent f5e5b734d4
commit 0ed8f210e6
1 changed files with 6 additions and 5 deletions
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11
drivers/rtc/rtc-pcf8583.c
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@ -85,7 +85,7 @@ static int pcf8583_get_datetime(struct i2c_client *client, struct rtc_time *dt)
dt->tm_min = BCD2BIN(buf[2]);
dt->tm_hour = BCD2BIN(buf[3]);
dt->tm_mday = BCD2BIN(buf[4]);
dt->tm_mon = BCD2BIN(buf[5]);
dt->tm_mon = BCD2BIN(buf[5]) - 1;
}
return ret == 2 ? 0 : -EIO;
@ -106,7 +106,7 @@ static int pcf8583_set_datetime(struct i2c_client *client, struct rtc_time *dt,
if (datetoo) {
len = 8;
buf[6] = BIN2BCD(dt->tm_mday) | (dt->tm_year << 6);
buf[7] = BIN2BCD(dt->tm_mon) | (dt->tm_wday << 5);
buf[7] = BIN2BCD(dt->tm_mon + 1) | (dt->tm_wday << 5);
}
ret = i2c_master_send(client, (char *)buf, len);
@ -226,7 +226,7 @@ static int pcf8583_rtc_read_time(struct device *dev, struct rtc_time *tm)
*/
year_offset += 4;
tm->tm_year = real_year + year_offset + year[1] * 100;
tm->tm_year = (real_year + year_offset + year[1] * 100) - 1900;
return 0;
}
@ -237,6 +237,7 @@ static int pcf8583_rtc_set_time(struct device *dev, struct rtc_time *tm)
unsigned char year[2], chk;
struct rtc_mem cmos_year = { CMOS_YEAR, sizeof(year), year };
struct rtc_mem cmos_check = { CMOS_CHECKSUM, 1, &chk };
unsigned int proper_year = tm->tm_year + 1900;
int ret;
/*
@ -258,8 +259,8 @@ static int pcf8583_rtc_set_time(struct device *dev, struct rtc_time *tm)
chk -= year[1] + year[0];
year[1] = tm->tm_year / 100;
year[0] = tm->tm_year % 100;
year[1] = proper_year / 100;
year[0] = proper_year % 100;
chk += year[1] + year[0];