openwrt-xburst/target/linux/coldfire/patches/046-Convert-rtc-drivers-to-use-the-alarm_irq_enable-meth.patch

From ab2284cd4730b9ea29937ee3a0ef1bcdc6b3159d Mon Sep 17 00:00:00 2001
From: Alison Wang <b18965@freescale.com>
Date: Thu, 4 Aug 2011 09:59:54 +0800
Subject: [PATCH 46/52] Convert rtc drivers to use the alarm_irq_enable method

Old rtc drivers use the ioctl method instead of the alarm_irq_enable
method for enabling alarm interupts. With the new virtualized RTC
rework, its important for drivers to use the alarm_irq_enable instead.

This patch converts the drivers that use the AIE ioctl method to
use the alarm_irq_enable method.

Signed-off-by: Alison Wang <b18965@freescale.com>
---
 drivers/rtc/rtc-m5441x.c |   22 +++++++++++-----------
 drivers/rtc/rtc-mcf.c    |   23 +++++++++++------------
 2 files changed, 22 insertions(+), 23 deletions(-)

--- a/drivers/rtc/rtc-m5441x.c
+++ b/drivers/rtc/rtc-m5441x.c
@@ -400,17 +400,6 @@ static int mcf_rtc_ioctl(struct device *
 		writew((readw(MCF_RTC_IER) | PIE_BIT_DEF[i][1]), MCF_RTC_IER);
 		spin_unlock_irq(&rtc_lock);
 		return 0;
-	case RTC_AIE_OFF:
-		spin_lock_irq(&rtc_lock);
-		writew((readw(MCF_RTC_IER) & ~MCF_RTC_ISR_ALM), MCF_RTC_IER);
-		spin_unlock_irq(&rtc_lock);
-		return 0;
-
-	case RTC_AIE_ON:
-		spin_lock_irq(&rtc_lock);
-		writew((readw(MCF_RTC_IER) | MCF_RTC_ISR_ALM), MCF_RTC_IER);
-		spin_unlock_irq(&rtc_lock);
-		return 0;
 
 	case RTC_UIE_OFF:	/* UIE is for the 1Hz interrupt */
 		spin_lock_irq(&rtc_lock);
@@ -427,6 +416,16 @@ static int mcf_rtc_ioctl(struct device *
 	return -ENOIOCTLCMD;
 }
 
+static int mcf_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+	if (enabled)
+		writew((readw(MCF_RTC_IER) | MCF_RTC_ISR_ALM), MCF_RTC_IER);
+	else
+		writew((readw(MCF_RTC_IER) & ~MCF_RTC_ISR_ALM), MCF_RTC_IER);
+
+	return 0;
+}
+
 /*!
  * This function reads the current RTC time into tm in Gregorian date.
  *
@@ -534,6 +533,7 @@ static struct rtc_class_ops mcf_rtc_ops
 	.set_time = mcf_rtc_set_time,
 	.read_alarm = mcf_rtc_read_alarm,
 	.set_alarm = mcf_rtc_set_alarm,
+	.alarm_irq_enable = mcf_rtc_alarm_irq_enable,
 };
 
 static int __devinit mcf_rtc_probe(struct platform_device *pdev)
--- a/drivers/rtc/rtc-mcf.c
+++ b/drivers/rtc/rtc-mcf.c
@@ -298,18 +298,6 @@ static int mcf_rtc_ioctl(struct device *
 		writel((readl(MCF_RTC_IER) | PIE_BIT_DEF[i][1]), MCF_RTC_IER);
 		spin_unlock_irq(&rtc_lock);
 		return 0;
-	case RTC_AIE_OFF:
-		spin_lock_irq(&rtc_lock);
-		writel((readl(MCF_RTC_IER) & ~MCF_RTC_ISR_ALM), MCF_RTC_IER);
-		spin_unlock_irq(&rtc_lock);
-		return 0;
-
-	case RTC_AIE_ON:
-		spin_lock_irq(&rtc_lock);
-		writel((readl(MCF_RTC_IER) | MCF_RTC_ISR_ALM), MCF_RTC_IER);
-		spin_unlock_irq(&rtc_lock);
-		return 0;
-
 	case RTC_UIE_OFF:	/* UIE is for the 1Hz interrupt */
 		spin_lock_irq(&rtc_lock);
 		writel((readl(MCF_RTC_IER) & ~MCF_RTC_ISR_1HZ), MCF_RTC_IER);
@@ -325,6 +313,16 @@ static int mcf_rtc_ioctl(struct device *
 	return -ENOIOCTLCMD;
 }
 
+static int mcf_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+	if (enabled)
+		writel((readl(MCF_RTC_IER) | MCF_RTC_ISR_ALM), MCF_RTC_IER);
+	else
+		writel((readl(MCF_RTC_IER) & ~MCF_RTC_ISR_ALM), MCF_RTC_IER);
+
+	return 0;
+}
+
 /*!
  * This function reads the current RTC time into tm in Gregorian date.
  *
@@ -466,6 +464,7 @@ static struct rtc_class_ops mcf_rtc_ops
 	.read_alarm = mcf_rtc_read_alarm,
 	.set_alarm = mcf_rtc_set_alarm,
 	.proc = mcf_rtc_proc,
+	.alarm_irq_enable = mcf_rtc_alarm_irq_enable,
 };
 
 static int __devinit mcf_rtc_probe(struct platform_device *pdev)