mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 23:30:53 +07:00
rtc: sa1100: declare irq in resource
Avoid to hard coded irq in rtc-sa1100 driver since we could share it among arch-sa1100/arch-pxa/arch-mmp. We still keep hard coded register address since the requirement is enabling both rtc-sa1100 and rtc-pxa driver. The register addresses are conflict since they're only two wrappers on the same rtc device. Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Haojian Zhuang
parent
1d8c38c3d1
commit
3888c09074
@ -406,20 +406,17 @@ static struct resource pxa_rtc_resources[] = {
|
||||
[1] = {
|
||||
.start = IRQ_RTC1Hz,
|
||||
.end = IRQ_RTC1Hz,
|
||||
.name = "rtc 1Hz",
|
||||
.flags = IORESOURCE_IRQ,
|
||||
},
|
||||
[2] = {
|
||||
.start = IRQ_RTCAlrm,
|
||||
.end = IRQ_RTCAlrm,
|
||||
.name = "rtc alarm",
|
||||
.flags = IORESOURCE_IRQ,
|
||||
},
|
||||
};
|
||||
|
||||
struct platform_device sa1100_device_rtc = {
|
||||
.name = "sa1100-rtc",
|
||||
.id = -1,
|
||||
};
|
||||
|
||||
struct platform_device pxa_device_rtc = {
|
||||
.name = "pxa-rtc",
|
||||
.id = -1,
|
||||
@ -427,6 +424,27 @@ struct platform_device pxa_device_rtc = {
|
||||
.resource = pxa_rtc_resources,
|
||||
};
|
||||
|
||||
static struct resource sa1100_rtc_resources[] = {
|
||||
{
|
||||
.start = IRQ_RTC1Hz,
|
||||
.end = IRQ_RTC1Hz,
|
||||
.name = "rtc 1Hz",
|
||||
.flags = IORESOURCE_IRQ,
|
||||
}, {
|
||||
.start = IRQ_RTCAlrm,
|
||||
.end = IRQ_RTCAlrm,
|
||||
.name = "rtc alarm",
|
||||
.flags = IORESOURCE_IRQ,
|
||||
},
|
||||
};
|
||||
|
||||
struct platform_device sa1100_device_rtc = {
|
||||
.name = "sa1100-rtc",
|
||||
.id = -1,
|
||||
.num_resources = ARRAY_SIZE(sa1100_rtc_resources),
|
||||
.resource = sa1100_rtc_resources,
|
||||
};
|
||||
|
||||
static struct resource pxa_ac97_resources[] = {
|
||||
[0] = {
|
||||
.start = 0x40500000,
|
||||
|
||||
@ -345,9 +345,17 @@ void sa11x0_register_irda(struct irda_platform_data *irda)
|
||||
sa11x0_register_device(&sa11x0ir_device, irda);
|
||||
}
|
||||
|
||||
static struct resource sa1100_rtc_resources[] = {
|
||||
DEFINE_RES_MEM(0x90010000, 0x9001003f),
|
||||
DEFINE_RES_IRQ_NAMED(IRQ_RTC1Hz, "rtc 1Hz"),
|
||||
DEFINE_RES_IRQ_NAMED(IRQ_RTCAlrm, "rtc alarm"),
|
||||
};
|
||||
|
||||
static struct platform_device sa11x0rtc_device = {
|
||||
.name = "sa1100-rtc",
|
||||
.id = -1,
|
||||
.num_resources = ARRAY_SIZE(sa1100_rtc_resources),
|
||||
.resource = sa1100_rtc_resources,
|
||||
};
|
||||
|
||||
static struct platform_device *sa11x0_devices[] __initdata = {
|
||||
|
||||
@ -773,8 +773,8 @@ config RTC_DRV_EP93XX
|
||||
will be called rtc-ep93xx.
|
||||
|
||||
config RTC_DRV_SA1100
|
||||
tristate "SA11x0/PXA2xx"
|
||||
depends on ARCH_SA1100 || ARCH_PXA
|
||||
tristate "SA11x0/PXA2xx/PXA910"
|
||||
depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
|
||||
help
|
||||
If you say Y here you will get access to the real time clock
|
||||
built into your SA11x0 or PXA2xx CPU.
|
||||
|
||||
@ -27,6 +27,7 @@
|
||||
#include <linux/init.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/pm.h>
|
||||
#include <linux/bitops.h>
|
||||
@ -34,24 +35,29 @@
|
||||
#include <mach/hardware.h>
|
||||
#include <asm/irq.h>
|
||||
|
||||
#ifdef CONFIG_ARCH_PXA
|
||||
#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
|
||||
#include <mach/regs-rtc.h>
|
||||
#endif
|
||||
|
||||
#define RTC_DEF_DIVIDER (32768 - 1)
|
||||
#define RTC_DEF_TRIM 0
|
||||
#define RTC_FREQ 1024
|
||||
|
||||
static const unsigned long RTC_FREQ = 1024;
|
||||
static DEFINE_SPINLOCK(sa1100_rtc_lock);
|
||||
struct sa1100_rtc {
|
||||
spinlock_t lock;
|
||||
int irq_1hz;
|
||||
int irq_alarm;
|
||||
struct rtc_device *rtc;
|
||||
};
|
||||
|
||||
static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)
|
||||
{
|
||||
struct platform_device *pdev = to_platform_device(dev_id);
|
||||
struct rtc_device *rtc = platform_get_drvdata(pdev);
|
||||
struct sa1100_rtc *info = dev_get_drvdata(dev_id);
|
||||
struct rtc_device *rtc = info->rtc;
|
||||
unsigned int rtsr;
|
||||
unsigned long events = 0;
|
||||
|
||||
spin_lock(&sa1100_rtc_lock);
|
||||
spin_lock(&info->lock);
|
||||
|
||||
rtsr = RTSR;
|
||||
/* clear interrupt sources */
|
||||
@ -87,27 +93,27 @@ static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)
|
||||
|
||||
rtc_update_irq(rtc, 1, events);
|
||||
|
||||
spin_unlock(&sa1100_rtc_lock);
|
||||
spin_unlock(&info->lock);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int sa1100_rtc_open(struct device *dev)
|
||||
{
|
||||
struct sa1100_rtc *info = dev_get_drvdata(dev);
|
||||
struct rtc_device *rtc = info->rtc;
|
||||
int ret;
|
||||
struct platform_device *plat_dev = to_platform_device(dev);
|
||||
struct rtc_device *rtc = platform_get_drvdata(plat_dev);
|
||||
|
||||
ret = request_irq(IRQ_RTC1Hz, sa1100_rtc_interrupt, IRQF_DISABLED,
|
||||
ret = request_irq(info->irq_1hz, sa1100_rtc_interrupt, IRQF_DISABLED,
|
||||
"rtc 1Hz", dev);
|
||||
if (ret) {
|
||||
dev_err(dev, "IRQ %d already in use.\n", IRQ_RTC1Hz);
|
||||
dev_err(dev, "IRQ %d already in use.\n", info->irq_1hz);
|
||||
goto fail_ui;
|
||||
}
|
||||
ret = request_irq(IRQ_RTCAlrm, sa1100_rtc_interrupt, IRQF_DISABLED,
|
||||
ret = request_irq(info->irq_alarm, sa1100_rtc_interrupt, IRQF_DISABLED,
|
||||
"rtc Alrm", dev);
|
||||
if (ret) {
|
||||
dev_err(dev, "IRQ %d already in use.\n", IRQ_RTCAlrm);
|
||||
dev_err(dev, "IRQ %d already in use.\n", info->irq_alarm);
|
||||
goto fail_ai;
|
||||
}
|
||||
rtc->max_user_freq = RTC_FREQ;
|
||||
@ -116,29 +122,33 @@ static int sa1100_rtc_open(struct device *dev)
|
||||
return 0;
|
||||
|
||||
fail_ai:
|
||||
free_irq(IRQ_RTC1Hz, dev);
|
||||
free_irq(info->irq_1hz, dev);
|
||||
fail_ui:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void sa1100_rtc_release(struct device *dev)
|
||||
{
|
||||
spin_lock_irq(&sa1100_rtc_lock);
|
||||
RTSR = 0;
|
||||
spin_unlock_irq(&sa1100_rtc_lock);
|
||||
struct sa1100_rtc *info = dev_get_drvdata(dev);
|
||||
|
||||
free_irq(IRQ_RTCAlrm, dev);
|
||||
free_irq(IRQ_RTC1Hz, dev);
|
||||
spin_lock_irq(&info->lock);
|
||||
RTSR = 0;
|
||||
spin_unlock_irq(&info->lock);
|
||||
|
||||
free_irq(info->irq_alarm, dev);
|
||||
free_irq(info->irq_1hz, dev);
|
||||
}
|
||||
|
||||
static int sa1100_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
|
||||
{
|
||||
spin_lock_irq(&sa1100_rtc_lock);
|
||||
struct sa1100_rtc *info = dev_get_drvdata(dev);
|
||||
|
||||
spin_lock_irq(&info->lock);
|
||||
if (enabled)
|
||||
RTSR |= RTSR_ALE;
|
||||
else
|
||||
RTSR &= ~RTSR_ALE;
|
||||
spin_unlock_irq(&sa1100_rtc_lock);
|
||||
spin_unlock_irq(&info->lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -171,10 +181,11 @@ static int sa1100_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
|
||||
|
||||
static int sa1100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
|
||||
{
|
||||
struct sa1100_rtc *info = dev_get_drvdata(dev);
|
||||
unsigned long time;
|
||||
int ret;
|
||||
|
||||
spin_lock_irq(&sa1100_rtc_lock);
|
||||
spin_lock_irq(&info->lock);
|
||||
ret = rtc_tm_to_time(&alrm->time, &time);
|
||||
if (ret != 0)
|
||||
goto out;
|
||||
@ -185,7 +196,7 @@ static int sa1100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
|
||||
else
|
||||
RTSR &= ~RTSR_ALE;
|
||||
out:
|
||||
spin_unlock_irq(&sa1100_rtc_lock);
|
||||
spin_unlock_irq(&info->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
@ -212,6 +223,21 @@ static const struct rtc_class_ops sa1100_rtc_ops = {
|
||||
static int sa1100_rtc_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct rtc_device *rtc;
|
||||
struct sa1100_rtc *info;
|
||||
int irq_1hz, irq_alarm, ret = 0;
|
||||
|
||||
irq_1hz = platform_get_irq_byname(pdev, "rtc 1Hz");
|
||||
irq_alarm = platform_get_irq_byname(pdev, "rtc alarm");
|
||||
if (irq_1hz < 0 || irq_alarm < 0)
|
||||
return -ENODEV;
|
||||
|
||||
info = kzalloc(sizeof(struct sa1100_rtc), GFP_KERNEL);
|
||||
if (!info)
|
||||
return -ENOMEM;
|
||||
info->irq_1hz = irq_1hz;
|
||||
info->irq_alarm = irq_alarm;
|
||||
spin_lock_init(&info->lock);
|
||||
platform_set_drvdata(pdev, info);
|
||||
|
||||
/*
|
||||
* According to the manual we should be able to let RTTR be zero
|
||||
@ -233,10 +259,11 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
|
||||
rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops,
|
||||
THIS_MODULE);
|
||||
|
||||
if (IS_ERR(rtc))
|
||||
return PTR_ERR(rtc);
|
||||
|
||||
platform_set_drvdata(pdev, rtc);
|
||||
if (IS_ERR(rtc)) {
|
||||
ret = PTR_ERR(rtc);
|
||||
goto err_dev;
|
||||
}
|
||||
info->rtc = rtc;
|
||||
|
||||
/* Fix for a nasty initialization problem the in SA11xx RTSR register.
|
||||
* See also the comments in sa1100_rtc_interrupt().
|
||||
@ -263,14 +290,21 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
|
||||
RTSR = RTSR_AL | RTSR_HZ;
|
||||
|
||||
return 0;
|
||||
err_dev:
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
kfree(info);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int sa1100_rtc_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct rtc_device *rtc = platform_get_drvdata(pdev);
|
||||
struct sa1100_rtc *info = platform_get_drvdata(pdev);
|
||||
|
||||
if (rtc)
|
||||
rtc_device_unregister(rtc);
|
||||
if (info) {
|
||||
rtc_device_unregister(info->rtc);
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
kfree(info);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -278,15 +312,17 @@ static int sa1100_rtc_remove(struct platform_device *pdev)
|
||||
#ifdef CONFIG_PM
|
||||
static int sa1100_rtc_suspend(struct device *dev)
|
||||
{
|
||||
struct sa1100_rtc *info = dev_get_drvdata(dev);
|
||||
if (device_may_wakeup(dev))
|
||||
enable_irq_wake(IRQ_RTCAlrm);
|
||||
enable_irq_wake(info->irq_alarm);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int sa1100_rtc_resume(struct device *dev)
|
||||
{
|
||||
struct sa1100_rtc *info = dev_get_drvdata(dev);
|
||||
if (device_may_wakeup(dev))
|
||||
disable_irq_wake(IRQ_RTCAlrm);
|
||||
disable_irq_wake(info->irq_alarm);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user