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authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2016-02-24 00:05:28 +0100
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2016-03-14 17:08:26 +0100
commitba270bbbf43474fe459e206b5283996fd1511647 (patch)
tree6f0ab30fed866ee6fad276e7e23cfbf9f23eac74
parenta25f4a95ec3cded34c1250364eba704c5e4fdac4 (diff)
rtc: pcf85063: remove useless century handling
pcf85063_get_datetime() tries to handle a century bit but that bit is not documented and the final value is never used anywhere else in the kernel. Reviewed-by: Juergen Borleis <jbe@pengutronix.de> Tested-by: Ulrich Ölmann <u.oelmann@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
-rw-r--r--drivers/rtc/rtc-pcf85063.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
index c5db231..4e940cc 100644
--- a/drivers/rtc/rtc-pcf85063.c
+++ b/drivers/rtc/rtc-pcf85063.c
@@ -31,13 +31,10 @@
#define PCF85063_REG_MO 0x09
#define PCF85063_REG_YR 0x0A
-#define PCF85063_MO_C 0x80 /* century */
-
static struct i2c_driver pcf85063_driver;
struct pcf85063 {
struct rtc_device *rtc;
- int c_polarity; /* 0: MO_C=1 means 19xx, otherwise MO_C=1 means 20xx */
int voltage_low; /* indicates if a low_voltage was detected */
};
@@ -72,7 +69,6 @@ static int pcf85063_stop_clock(struct i2c_client *client, u8 *ctrl1)
static int pcf85063_get_datetime(struct i2c_client *client, struct rtc_time *tm)
{
int rc;
- struct pcf85063 *pcf85063 = i2c_get_clientdata(client);
u8 regs[7];
/*
@@ -103,9 +99,6 @@ static int pcf85063_get_datetime(struct i2c_client *client, struct rtc_time *tm)
tm->tm_year = bcd2bin(regs[6]);
if (tm->tm_year < 70)
tm->tm_year += 100; /* assume we are in 1970...2069 */
- /* detect the polarity heuristically. see note above. */
- pcf85063->c_polarity = (regs[5] & PCF85063_MO_C) ?
- (tm->tm_year >= 100) : (tm->tm_year < 100);
return rtc_valid_tm(tm);
}