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path: root/drivers/rtc/rtc-m48t59.c
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Diffstat (limited to 'drivers/rtc/rtc-m48t59.c')
-rw-r--r--drivers/rtc/rtc-m48t59.c124
1 files changed, 42 insertions, 82 deletions
diff --git a/drivers/rtc/rtc-m48t59.c b/drivers/rtc/rtc-m48t59.c
index ede43b84685..11880c1e9da 100644
--- a/drivers/rtc/rtc-m48t59.c
+++ b/drivers/rtc/rtc-m48t59.c
@@ -19,6 +19,7 @@
#include <linux/rtc.h>
#include <linux/rtc/m48t59.h>
#include <linux/bcd.h>
+#include <linux/slab.h>
#ifndef NO_IRQ
#define NO_IRQ (-1)
@@ -67,7 +68,7 @@ m48t59_mem_readb(struct device *dev, u32 ofs)
static int m48t59_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct platform_device *pdev = to_platform_device(dev);
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+ struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
unsigned long flags;
u8 val;
@@ -104,13 +105,13 @@ static int m48t59_rtc_read_time(struct device *dev, struct rtc_time *tm)
dev_dbg(dev, "RTC read time %04d-%02d-%02d %02d/%02d/%02d\n",
tm->tm_year + 1900, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
- return 0;
+ return rtc_valid_tm(tm);
}
static int m48t59_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct platform_device *pdev = to_platform_device(dev);
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+ struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
unsigned long flags;
u8 val = 0;
@@ -157,7 +158,7 @@ static int m48t59_rtc_set_time(struct device *dev, struct rtc_time *tm)
static int m48t59_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct platform_device *pdev = to_platform_device(dev);
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+ struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
struct rtc_time *tm = &alrm->time;
unsigned long flags;
@@ -195,7 +196,7 @@ static int m48t59_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
dev_dbg(dev, "RTC read alarm time %04d-%02d-%02d %02d/%02d/%02d\n",
tm->tm_year + 1900, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
- return 0;
+ return rtc_valid_tm(tm);
}
/*
@@ -204,7 +205,7 @@ static int m48t59_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
static int m48t59_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct platform_device *pdev = to_platform_device(dev);
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+ struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
struct rtc_time *tm = &alrm->time;
u8 mday, hour, min, sec;
@@ -262,36 +263,27 @@ static int m48t59_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
/*
* Handle commands from user-space
*/
-static int m48t59_rtc_ioctl(struct device *dev, unsigned int cmd,
- unsigned long arg)
+static int m48t59_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct platform_device *pdev = to_platform_device(dev);
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+ struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
unsigned long flags;
- int ret = 0;
spin_lock_irqsave(&m48t59->lock, flags);
- switch (cmd) {
- case RTC_AIE_OFF: /* alarm interrupt off */
- M48T59_WRITE(0x00, M48T59_INTR);
- break;
- case RTC_AIE_ON: /* alarm interrupt on */
+ if (enabled)
M48T59_WRITE(M48T59_INTR_AFE, M48T59_INTR);
- break;
- default:
- ret = -ENOIOCTLCMD;
- break;
- }
+ else
+ M48T59_WRITE(0x00, M48T59_INTR);
spin_unlock_irqrestore(&m48t59->lock, flags);
- return ret;
+ return 0;
}
static int m48t59_rtc_proc(struct device *dev, struct seq_file *seq)
{
struct platform_device *pdev = to_platform_device(dev);
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+ struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
unsigned long flags;
u8 val;
@@ -312,7 +304,7 @@ static irqreturn_t m48t59_rtc_interrupt(int irq, void *dev_id)
{
struct device *dev = (struct device *)dev_id;
struct platform_device *pdev = to_platform_device(dev);
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+ struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
u8 event;
@@ -329,12 +321,12 @@ static irqreturn_t m48t59_rtc_interrupt(int irq, void *dev_id)
}
static const struct rtc_class_ops m48t59_rtc_ops = {
- .ioctl = m48t59_rtc_ioctl,
.read_time = m48t59_rtc_read_time,
.set_time = m48t59_rtc_set_time,
.read_alarm = m48t59_rtc_readalarm,
.set_alarm = m48t59_rtc_setalarm,
.proc = m48t59_rtc_proc,
+ .alarm_irq_enable = m48t59_rtc_alarm_irq_enable,
};
static const struct rtc_class_ops m48t02_rtc_ops = {
@@ -342,13 +334,13 @@ static const struct rtc_class_ops m48t02_rtc_ops = {
.set_time = m48t59_rtc_set_time,
};
-static ssize_t m48t59_nvram_read(struct kobject *kobj,
+static ssize_t m48t59_nvram_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t pos, size_t size)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct platform_device *pdev = to_platform_device(dev);
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+ struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
ssize_t cnt = 0;
unsigned long flags;
@@ -362,13 +354,13 @@ static ssize_t m48t59_nvram_read(struct kobject *kobj,
return cnt;
}
-static ssize_t m48t59_nvram_write(struct kobject *kobj,
+static ssize_t m48t59_nvram_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t pos, size_t size)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct platform_device *pdev = to_platform_device(dev);
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+ struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
ssize_t cnt = 0;
unsigned long flags;
@@ -391,9 +383,9 @@ static struct bin_attribute m48t59_nvram_attr = {
.write = m48t59_nvram_write,
};
-static int __devinit m48t59_rtc_probe(struct platform_device *pdev)
+static int m48t59_rtc_probe(struct platform_device *pdev)
{
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+ struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = NULL;
struct resource *res;
int ret = -ENOMEM;
@@ -417,7 +409,8 @@ static int __devinit m48t59_rtc_probe(struct platform_device *pdev)
} else if (res->flags & IORESOURCE_MEM) {
/* we are memory-mapped */
if (!pdata) {
- pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata),
+ GFP_KERNEL);
if (!pdata)
return -ENOMEM;
/* Ensure we only kmalloc platform data once */
@@ -433,7 +426,7 @@ static int __devinit m48t59_rtc_probe(struct platform_device *pdev)
pdata->read_byte = m48t59_mem_readb;
}
- m48t59 = kzalloc(sizeof(*m48t59), GFP_KERNEL);
+ m48t59 = devm_kzalloc(&pdev->dev, sizeof(*m48t59), GFP_KERNEL);
if (!m48t59)
return -ENOMEM;
@@ -441,9 +434,10 @@ static int __devinit m48t59_rtc_probe(struct platform_device *pdev)
if (!m48t59->ioaddr) {
/* ioaddr not mapped externally */
- m48t59->ioaddr = ioremap(res->start, res->end - res->start + 1);
+ m48t59->ioaddr = devm_ioremap(&pdev->dev, res->start,
+ resource_size(res));
if (!m48t59->ioaddr)
- goto out;
+ return ret;
}
/* Try to get irq number. We also can work in
@@ -454,10 +448,11 @@ static int __devinit m48t59_rtc_probe(struct platform_device *pdev)
m48t59->irq = NO_IRQ;
if (m48t59->irq != NO_IRQ) {
- ret = request_irq(m48t59->irq, m48t59_rtc_interrupt,
- IRQF_SHARED, "rtc-m48t59", &pdev->dev);
+ ret = devm_request_irq(&pdev->dev, m48t59->irq,
+ m48t59_rtc_interrupt, IRQF_SHARED,
+ "rtc-m48t59", &pdev->dev);
if (ret)
- goto out;
+ return ret;
}
switch (pdata->type) {
case M48T59RTC_TYPE_M48T59:
@@ -477,53 +472,29 @@ static int __devinit m48t59_rtc_probe(struct platform_device *pdev)
break;
default:
dev_err(&pdev->dev, "Unknown RTC type\n");
- ret = -ENODEV;
- goto out;
+ return -ENODEV;
}
spin_lock_init(&m48t59->lock);
platform_set_drvdata(pdev, m48t59);
- m48t59->rtc = rtc_device_register(name, &pdev->dev, ops, THIS_MODULE);
- if (IS_ERR(m48t59->rtc)) {
- ret = PTR_ERR(m48t59->rtc);
- goto out;
- }
+ m48t59->rtc = devm_rtc_device_register(&pdev->dev, name, ops,
+ THIS_MODULE);
+ if (IS_ERR(m48t59->rtc))
+ return PTR_ERR(m48t59->rtc);
m48t59_nvram_attr.size = pdata->offset;
ret = sysfs_create_bin_file(&pdev->dev.kobj, &m48t59_nvram_attr);
- if (ret) {
- rtc_device_unregister(m48t59->rtc);
- goto out;
- }
+ if (ret)
+ return ret;
return 0;
-
-out:
- if (m48t59->irq != NO_IRQ)
- free_irq(m48t59->irq, &pdev->dev);
- if (m48t59->ioaddr)
- iounmap(m48t59->ioaddr);
- if (m48t59)
- kfree(m48t59);
- return ret;
}
-static int __devexit m48t59_rtc_remove(struct platform_device *pdev)
+static int m48t59_rtc_remove(struct platform_device *pdev)
{
- struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
- struct m48t59_plat_data *pdata = pdev->dev.platform_data;
-
sysfs_remove_bin_file(&pdev->dev.kobj, &m48t59_nvram_attr);
- if (!IS_ERR(m48t59->rtc))
- rtc_device_unregister(m48t59->rtc);
- if (m48t59->ioaddr && !pdata->ioaddr)
- iounmap(m48t59->ioaddr);
- if (m48t59->irq != NO_IRQ)
- free_irq(m48t59->irq, &pdev->dev);
- platform_set_drvdata(pdev, NULL);
- kfree(m48t59);
return 0;
}
@@ -536,21 +507,10 @@ static struct platform_driver m48t59_rtc_driver = {
.owner = THIS_MODULE,
},
.probe = m48t59_rtc_probe,
- .remove = __devexit_p(m48t59_rtc_remove),
+ .remove = m48t59_rtc_remove,
};
-static int __init m48t59_rtc_init(void)
-{
- return platform_driver_register(&m48t59_rtc_driver);
-}
-
-static void __exit m48t59_rtc_exit(void)
-{
- platform_driver_unregister(&m48t59_rtc_driver);
-}
-
-module_init(m48t59_rtc_init);
-module_exit(m48t59_rtc_exit);
+module_platform_driver(m48t59_rtc_driver);
MODULE_AUTHOR("Mark Zhan <rongkai.zhan@windriver.com>");
MODULE_DESCRIPTION("M48T59/M48T02/M48T08 RTC driver");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 22:36:13 +0000