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rtc: mcp795: Add support for weekday. 

This patch adds support for saving/loading weekday value from the chip.

Signed-off-by: Emil Bartczak <emilbart@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Emil Bartczak 2016-12-25 23:07:42 +01:00 committed by Alexandre Belloni
parent 844a3073c9
commit 72877b51d0
1 changed files with 7 additions and 5 deletions
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12
drivers/rtc/rtc-mcp795.c
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@ -170,6 +170,7 @@ static int mcp795_set_time(struct device *dev, struct rtc_time *tim)
data[0] = (data[0] & 0x80) | bin2bcd(tim->tm_sec);
data[1] = (data[1] & 0x80) | bin2bcd(tim->tm_min);
data[2] = bin2bcd(tim->tm_hour);
data[3] = (data[3] & 0xF8) | bin2bcd(tim->tm_wday + 1);
data[4] = bin2bcd(tim->tm_mday);
data[5] = (data[5] & MCP795_LP_BIT) | bin2bcd(tim->tm_mon + 1);
@ -198,9 +199,9 @@ static int mcp795_set_time(struct device *dev, struct rtc_time *tim)
if (ret)
return ret;
dev_dbg(dev, "Set mcp795: %04d-%02d-%02d %02d:%02d:%02d\n",
dev_dbg(dev, "Set mcp795: %04d-%02d-%02d(%d) %02d:%02d:%02d\n",
tim->tm_year + 1900, tim->tm_mon, tim->tm_mday,
tim->tm_hour, tim->tm_min, tim->tm_sec);
tim->tm_wday, tim->tm_hour, tim->tm_min, tim->tm_sec);
return 0;
}
@ -218,13 +219,14 @@ static int mcp795_read_time(struct device *dev, struct rtc_time *tim)
tim->tm_sec = bcd2bin(data[0] & 0x7F);
tim->tm_min = bcd2bin(data[1] & 0x7F);
tim->tm_hour = bcd2bin(data[2] & 0x3F);
tim->tm_wday = bcd2bin(data[3] & 0x07) - 1;
tim->tm_mday = bcd2bin(data[4] & 0x3F);
tim->tm_mon = bcd2bin(data[5] & 0x1F) - 1;
tim->tm_year = bcd2bin(data[6]) + 100; /* Assume we are in 20xx */
dev_dbg(dev, "Read from mcp795: %04d-%02d-%02d %02d:%02d:%02d\n",
tim->tm_year + 1900, tim->tm_mon, tim->tm_mday,
tim->tm_hour, tim->tm_min, tim->tm_sec);
dev_dbg(dev, "Read from mcp795: %04d-%02d-%02d(%d) %02d:%02d:%02d\n",
tim->tm_year + 1900, tim->tm_mon, tim->tm_mday,
tim->tm_wday, tim->tm_hour, tim->tm_min, tim->tm_sec);
return rtc_valid_tm(tim);
}