The patch titled
drivers/rtc/rtc-stmp3xxx.c: remove UIE handlers
has been added to the -mm tree. Its filename is
drivers-rtc-rtc-stmp3xxxc-remove-uie-handlers.patch
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out what to do about this
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------------------------------------------------------
Subject: drivers/rtc/rtc-stmp3xxx.c: remove UIE handlers
From: Wolfram Sang <w.sang@xxxxxxxxxxxxxx>
The RTC core handles UIE since 6610e08 (RTC: Rework RTC code to use
timerqueue for events), so remove the specific interrupt in this driver.
To make it work at all, enable interrupts in set_alarm() if needed. Drop
IRQF_DISABLED which is deprecated, while we are here. Finally, add my
copyright after all these changes.
Signed-off-by: Wolfram Sang <w.sang@xxxxxxxxxxxxxx>
Tested-by: Shawn Guo <shawn.guo@xxxxxxxxxxxxx>
Cc: John Stultz <johnstul@xxxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rtc/rtc-stmp3xxx.c | 57 ++++++++++-------------------------
1 file changed, 17 insertions(+), 40 deletions(-)
diff -puN drivers/rtc/rtc-stmp3xxx.c~drivers-rtc-rtc-stmp3xxxc-remove-uie-handlers drivers/rtc/rtc-stmp3xxx.c
--- a/drivers/rtc/rtc-stmp3xxx.c~drivers-rtc-rtc-stmp3xxxc-remove-uie-handlers
+++ a/drivers/rtc/rtc-stmp3xxx.c
@@ -6,6 +6,7 @@
*
* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
+ * Copyright 2011 Wolfram Sang, Pengutronix e.K.
*/
/*
@@ -33,7 +34,6 @@
#define STMP3XXX_RTC_CTRL_ALARM_IRQ_EN 0x00000001
#define STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN 0x00000002
#define STMP3XXX_RTC_CTRL_ALARM_IRQ 0x00000004
-#define STMP3XXX_RTC_CTRL_ONEMSEC_IRQ 0x00000008
#define STMP3XXX_RTC_STAT 0x10
#define STMP3XXX_RTC_STAT_STALE_SHIFT 16
@@ -52,9 +52,8 @@
struct stmp3xxx_rtc_data {
struct rtc_device *rtc;
- unsigned irq_count;
void __iomem *io;
- int irq_alarm, irq_1msec;
+ int irq_alarm;
};
static void stmp3xxx_wait_time(struct stmp3xxx_rtc_data *rtc_data)
@@ -92,31 +91,16 @@ static int stmp3xxx_rtc_set_mmss(struct
static irqreturn_t stmp3xxx_rtc_interrupt(int irq, void *dev_id)
{
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev_id);
- u32 status;
- u32 events = 0;
-
- status = readl(rtc_data->io + STMP3XXX_RTC_CTRL) &
- (STMP3XXX_RTC_CTRL_ALARM_IRQ | STMP3XXX_RTC_CTRL_ONEMSEC_IRQ);
+ u32 status = readl(rtc_data->io + STMP3XXX_RTC_CTRL);
if (status & STMP3XXX_RTC_CTRL_ALARM_IRQ) {
writel(STMP3XXX_RTC_CTRL_ALARM_IRQ,
rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
- events |= RTC_AF | RTC_IRQF;
+ rtc_update_irq(rtc_data->rtc, 1, RTC_AF | RTC_IRQF);
+ return IRQ_HANDLED;
}
- if (status & STMP3XXX_RTC_CTRL_ONEMSEC_IRQ) {
- writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ,
- rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
- if (++rtc_data->irq_count % 1000 == 0) {
- events |= RTC_UF | RTC_IRQF;
- rtc_data->irq_count = 0;
- }
- }
-
- if (events)
- rtc_update_irq(rtc_data->rtc, 1, events);
-
- return IRQ_HANDLED;
+ return IRQ_NONE;
}
static int stmp3xxx_alarm_irq_enable(struct device *dev, unsigned int enabled)
@@ -154,6 +138,9 @@ static int stmp3xxx_rtc_set_alarm(struct
rtc_tm_to_time(&alm->time, &t);
writel(t, rtc_data->io + STMP3XXX_RTC_ALARM);
+
+ stmp3xxx_alarm_irq_enable(dev, alm->enabled);
+
return 0;
}
@@ -173,10 +160,9 @@ static int stmp3xxx_rtc_remove(struct pl
if (!rtc_data)
return 0;
- writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN | STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
+ writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
free_irq(rtc_data->irq_alarm, &pdev->dev);
- free_irq(rtc_data->irq_1msec, &pdev->dev);
rtc_device_unregister(rtc_data->rtc);
platform_set_drvdata(pdev, NULL);
iounmap(rtc_data->io);
@@ -210,7 +196,6 @@ static int stmp3xxx_rtc_probe(struct pla
}
rtc_data->irq_alarm = platform_get_irq(pdev, 0);
- rtc_data->irq_1msec = platform_get_irq(pdev, 1);
if (!(readl(STMP3XXX_RTC_STAT + rtc_data->io) &
STMP3XXX_RTC_STAT_RTC_PRESENT)) {
@@ -227,6 +212,9 @@ static int stmp3xxx_rtc_probe(struct pla
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE,
rtc_data->io + STMP3XXX_RTC_PERSISTENT0_CLR);
+ writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN | STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
+ rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
+
rtc_data->rtc = rtc_device_register(pdev->name, &pdev->dev,
&stmp3xxx_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc_data->rtc)) {
@@ -234,29 +222,17 @@ static int stmp3xxx_rtc_probe(struct pla
goto out_remap;
}
- rtc_data->irq_count = 0;
- err = request_irq(rtc_data->irq_alarm, stmp3xxx_rtc_interrupt,
- IRQF_DISABLED, "RTC alarm", &pdev->dev);
+ err = request_irq(rtc_data->irq_alarm, stmp3xxx_rtc_interrupt, 0,
+ "RTC alarm", &pdev->dev);
if (err) {
dev_err(&pdev->dev, "Cannot claim IRQ%d\n",
rtc_data->irq_alarm);
goto out_irq_alarm;
}
- err = request_irq(rtc_data->irq_1msec, stmp3xxx_rtc_interrupt,
- IRQF_DISABLED, "RTC tick", &pdev->dev);
- if (err) {
- dev_err(&pdev->dev, "Cannot claim IRQ%d\n",
- rtc_data->irq_1msec);
- goto out_irq1;
- }
return 0;
-out_irq1:
- free_irq(rtc_data->irq_alarm, &pdev->dev);
out_irq_alarm:
- writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN | STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
- rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
rtc_device_unregister(rtc_data->rtc);
out_remap:
platform_set_drvdata(pdev, NULL);
@@ -313,5 +289,6 @@ module_init(stmp3xxx_rtc_init);
module_exit(stmp3xxx_rtc_exit);
MODULE_DESCRIPTION("STMP3xxx RTC Driver");
-MODULE_AUTHOR("dmitry pervushin <dpervushin@xxxxxxxxxxxxxxxxx>");
+MODULE_AUTHOR("dmitry pervushin <dpervushin@xxxxxxxxxxxxxxxxx> and "
+ "Wolfram Sang <w.sang@xxxxxxxxxxxxxx>");
MODULE_LICENSE("GPL");
_
Patches currently in -mm which might be from w.sang@xxxxxxxxxxxxxx are
origin.patch
linux-next.patch
rtc-driver-for-pt7c4338-chip.patch
drivers-rtc-rtc-stmp3xxxc-get-rid-of-platform-specific-include-for-register-names.patch
drivers-rtc-rtc-stmp3xxxc-port-stmp-functions-to-mxs-equivalents.patch
drivers-rtc-rtc-stmp3xxxc-initialize-drvdata-before-registering-device.patch
drivers-rtc-rtc-stmp3xxxc-get-rid-of-mach-specific-accessors.patch
drivers-rtc-rtc-stmp3xxxc-remove-uie-handlers.patch
gpio-make-gpio_requestfree_array-gpio-array-parameter-const.patch
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