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rtc: tw4030 add alarm/update interfaces

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- implement alarm_irq_enable
- return correct error code when registering fails

[dbrownell@users.sourceforge.net: build fixes, force 1/sec irqs]
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Samuel Ortiz <sameo@openedhand.com>
Cc: rtc-linux@googlegroups.com
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alessandro Zummo 2009-01-15 13:50:52 -08:00 committed by Linus Torvalds
parent fb144adc51
commit a748384bba
1 changed files with 10 additions and 34 deletions
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44
drivers/rtc/rtc-twl4030.c
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@ -120,7 +120,7 @@ static int twl4030_rtc_write_u8(u8 data, u8 reg)
static unsigned char rtc_irq_bits;
/*
* Enable timer and/or alarm interrupts.
* Enable 1/second update and/or alarm interrupts.
*/
static int set_rtc_irq_bit(unsigned char bit)
{
@ -128,6 +128,7 @@ static int set_rtc_irq_bit(unsigned char bit)
int ret;
val = rtc_irq_bits | bit;
val &= ~BIT_RTC_INTERRUPTS_REG_EVERY_M;
ret = twl4030_rtc_write_u8(val, REG_RTC_INTERRUPTS_REG);
if (ret == 0)
rtc_irq_bits = val;
@ -136,7 +137,7 @@ static int set_rtc_irq_bit(unsigned char bit)
}
/*
* Disable timer and/or alarm interrupts.
* Disable update and/or alarm interrupts.
*/
static int mask_rtc_irq_bit(unsigned char bit)
{
@ -151,7 +152,7 @@ static int mask_rtc_irq_bit(unsigned char bit)
return ret;
}
static inline int twl4030_rtc_alarm_irq_set_state(int enabled)
static int twl4030_rtc_alarm_irq_enable(struct device *dev, unsigned enabled)
{
int ret;
@ -163,7 +164,7 @@ static inline int twl4030_rtc_alarm_irq_set_state(int enabled)
return ret;
}
static inline int twl4030_rtc_irq_set_state(int enabled)
static int twl4030_rtc_update_irq_enable(struct device *dev, unsigned enabled)
{
int ret;
@ -292,7 +293,7 @@ static int twl4030_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
unsigned char alarm_data[ALL_TIME_REGS + 1];
int ret;
ret = twl4030_rtc_alarm_irq_set_state(0);
ret = twl4030_rtc_alarm_irq_enable(dev, 0);
if (ret)
goto out;
@ -312,35 +313,11 @@ static int twl4030_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
}
if (alm->enabled)
ret = twl4030_rtc_alarm_irq_set_state(1);
ret = twl4030_rtc_alarm_irq_enable(dev, 1);
out:
return ret;
}
#ifdef CONFIG_RTC_INTF_DEV
static int twl4030_rtc_ioctl(struct device *dev, unsigned int cmd,
unsigned long arg)
{
switch (cmd) {
case RTC_AIE_OFF:
return twl4030_rtc_alarm_irq_set_state(0);
case RTC_AIE_ON:
return twl4030_rtc_alarm_irq_set_state(1);
case RTC_UIE_OFF:
return twl4030_rtc_irq_set_state(0);
case RTC_UIE_ON:
return twl4030_rtc_irq_set_state(1);
default:
return -ENOIOCTLCMD;
}
}
#else
#define twl4030_rtc_ioctl NULL
#endif
static irqreturn_t twl4030_rtc_interrupt(int irq, void *rtc)
{
unsigned long events = 0;
@ -400,11 +377,12 @@ out:
}
static struct rtc_class_ops twl4030_rtc_ops = {
.ioctl = twl4030_rtc_ioctl,
.read_time = twl4030_rtc_read_time,
.set_time = twl4030_rtc_set_time,
.read_alarm = twl4030_rtc_read_alarm,
.set_alarm = twl4030_rtc_set_alarm,
.alarm_irq_enable = twl4030_rtc_alarm_irq_enable,
.update_irq_enable = twl4030_rtc_update_irq_enable,
};
/*----------------------------------------------------------------------*/
@ -422,7 +400,7 @@ static int __devinit twl4030_rtc_probe(struct platform_device *pdev)
rtc = rtc_device_register(pdev->name,
&pdev->dev, &twl4030_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc)) {
ret = -EINVAL;
ret = PTR_ERR(rtc);
dev_err(&pdev->dev, "can't register RTC device, err %ld\n",
PTR_ERR(rtc));
goto out0;
@ -432,7 +410,6 @@ static int __devinit twl4030_rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, rtc);
ret = twl4030_rtc_read_u8(&rd_reg, REG_RTC_STATUS_REG);
if (ret < 0)
goto out1;
@ -475,7 +452,6 @@ static int __devinit twl4030_rtc_probe(struct platform_device *pdev)
return ret;
out2:
free_irq(irq, rtc);
out1: