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authorAlessandro Zummo <a.zummo@towertech.it>2009-01-15 13:50:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-15 16:39:36 -0800
commita748384bba1754409383ba9f0738bffdfa3fd431 (patch)
tree906b6a0d111c9b054242ec96d0bbde386bc95c7a /drivers/rtc
parentfb144adc517d9ebe8fd8d98a5696fb68ec91e1f5 (diff)
downloadblackbird-op-linux-a748384bba1754409383ba9f0738bffdfa3fd431.tar.gz
blackbird-op-linux-a748384bba1754409383ba9f0738bffdfa3fd431.zip
rtc: tw4030 add alarm/update interfaces
- 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>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-twl4030.c44
1 files changed, 10 insertions, 34 deletions
diff --git a/drivers/rtc/rtc-twl4030.c b/drivers/rtc/rtc-twl4030.c
index 8ce5f74ee45b..25dc3e1cedbe 100644
--- a/drivers/rtc/rtc-twl4030.c
+++ b/drivers/rtc/rtc-twl4030.c
@@ -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:
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