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| author | Ladislav Michl <ladis@linux-mips.org> | 2005-07-29 21:15:00 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-29 22:12:50 +0200 |
| commit | d91e16943fdaf02bf3459059abca1032589c0663 (patch) | |
| tree | d583c855984bc43f3b3c25c2b43a5dec5bf1fd75 /drivers/i2c | |
| parent | [PATCH] I2C-MPC: Restore code removed (diff) | |
| download | linux-d91e16943fdaf02bf3459059abca1032589c0663.tar.xz linux-d91e16943fdaf02bf3459059abca1032589c0663.zip | |
[PATCH] I2C: ds1337 - fix 12/24 hour mode bug
DS1339 manual, page 6, chapter Date and time operation:
The DS1339 can be run in either 12-hour or 24-hour mode. Bit 6 of the
hours register is defined as the 12-hour or 24-hour mode-select bit.
When high, the 12-hour mode is selected.
Patch below makes ds1337 driver work as documented in manual.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/chips/ds1337.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/i2c/chips/ds1337.c b/drivers/i2c/chips/ds1337.c index 74ece8ac1c23..82cf959989fd 100644 --- a/drivers/i2c/chips/ds1337.c +++ b/drivers/i2c/chips/ds1337.c @@ -165,7 +165,7 @@ static int ds1337_set_datetime(struct i2c_client *client, struct rtc_time *dt) buf[0] = 0; /* reg offset */ buf[1] = BIN2BCD(dt->tm_sec); buf[2] = BIN2BCD(dt->tm_min); - buf[3] = BIN2BCD(dt->tm_hour) | (1 << 6); + buf[3] = BIN2BCD(dt->tm_hour); buf[4] = BIN2BCD(dt->tm_wday) + 1; buf[5] = BIN2BCD(dt->tm_mday); buf[6] = BIN2BCD(dt->tm_mon) + 1; @@ -344,9 +344,9 @@ static void ds1337_init_client(struct i2c_client *client) /* Ensure that device is set in 24-hour mode */ val = i2c_smbus_read_byte_data(client, DS1337_REG_HOUR); - if ((val >= 0) && (val & (1 << 6)) == 0) + if ((val >= 0) && (val & (1 << 6))) i2c_smbus_write_byte_data(client, DS1337_REG_HOUR, - val | (1 << 6)); + val & 0x3f); } static int ds1337_detach_client(struct i2c_client *client) |