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rtc-ds1307: remove legacy probe() checks

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Remove RTC register value checks from the rtc-ds1307 probe() function.
They were left over from the legacy style I2C driver, which had to defend
against finding a non-RTC chip when the driver was probed.

Also fix a minor glitch in the alarm support: DS1307 chips don't have
alarms, so name those methods after one of the chips which actually *do*
have alarms (DS1337).

Signed-off-by: Jüri Reitel <juri.reitel@liewenthal.ee>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Sebastien Barre <sbarre@sdelcc.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jüri Reitel 2009-01-07 18:07:16 -08:00 committed by Linus Torvalds
parent fed40b734c
commit 74d88eb293
1 changed files with 4 additions and 27 deletions
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31
drivers/rtc/rtc-ds1307.c
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@ -287,7 +287,7 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)
return 0;
}
static int ds1307_read_alarm(struct device *dev, struct rtc_wkalrm *t)
static int ds1337_read_alarm(struct device *dev, struct rtc_wkalrm *t)
{
struct i2c_client *client = to_i2c_client(dev);
struct ds1307 *ds1307 = i2c_get_clientdata(client);
@ -338,7 +338,7 @@ static int ds1307_read_alarm(struct device *dev, struct rtc_wkalrm *t)
return 0;
}
static int ds1307_set_alarm(struct device *dev, struct rtc_wkalrm *t)
static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
{
struct i2c_client *client = to_i2c_client(dev);
struct ds1307 *ds1307 = i2c_get_clientdata(client);
@ -452,8 +452,8 @@ static int ds1307_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
static const struct rtc_class_ops ds13xx_rtc_ops = {
.read_time = ds1307_get_time,
.set_time = ds1307_set_time,
.read_alarm = ds1307_read_alarm,
.set_alarm = ds1307_set_alarm,
.read_alarm = ds1337_read_alarm,
.set_alarm = ds1337_set_alarm,
.ioctl = ds1307_ioctl,
};
@ -654,22 +654,6 @@ static int __devinit ds1307_probe(struct i2c_client *client,
break;
}
tmp = ds1307->regs[DS1307_REG_SECS];
tmp = bcd2bin(tmp & 0x7f);
if (tmp > 60)
goto exit_bad;
tmp = bcd2bin(ds1307->regs[DS1307_REG_MIN] & 0x7f);
if (tmp > 60)
goto exit_bad;
tmp = bcd2bin(ds1307->regs[DS1307_REG_MDAY] & 0x3f);
if (tmp == 0 || tmp > 31)
goto exit_bad;
tmp = bcd2bin(ds1307->regs[DS1307_REG_MONTH] & 0x1f);
if (tmp == 0 || tmp > 12)
goto exit_bad;
tmp = ds1307->regs[DS1307_REG_HOUR];
switch (ds1307->type) {
case ds_1340:
@ -726,13 +710,6 @@ static int __devinit ds1307_probe(struct i2c_client *client,
return 0;
exit_bad:
dev_dbg(&client->dev, "%s: %02x %02x %02x %02x %02x %02x %02x\n",
"bogus register",
ds1307->regs[0], ds1307->regs[1],
ds1307->regs[2], ds1307->regs[3],
ds1307->regs[4], ds1307->regs[5],
ds1307->regs[6]);
exit_irq:
if (ds1307->rtc)
rtc_device_unregister(ds1307->rtc);