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path: root/drivers/rtc/rtc-s3c.c
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Diffstat (limited to 'drivers/rtc/rtc-s3c.c')
-rw-r--r--drivers/rtc/rtc-s3c.c101
1 files changed, 46 insertions, 55 deletions
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 404651464d4..4958a363b2c 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -29,9 +29,8 @@
#include <linux/uaccess.h>
#include <linux/io.h>
-#include <mach/hardware.h>
#include <asm/irq.h>
-#include <plat/regs-rtc.h>
+#include "rtc-s3c.h"
enum s3c_cpu_type {
TYPE_S3C2410,
@@ -49,9 +48,8 @@ struct s3c_rtc_drv_data {
static struct clk *rtc_clk;
static void __iomem *s3c_rtc_base;
-static int s3c_rtc_alarmno = NO_IRQ;
-static int s3c_rtc_tickno = NO_IRQ;
-static bool wake_en;
+static int s3c_rtc_alarmno;
+static int s3c_rtc_tickno;
static enum s3c_cpu_type s3c_rtc_cpu_type;
static DEFINE_SPINLOCK(s3c_rtc_pie_lock);
@@ -115,7 +113,7 @@ static int s3c_rtc_setaie(struct device *dev, unsigned int enabled)
{
unsigned int tmp;
- pr_debug("%s: aie=%d\n", __func__, enabled);
+ dev_dbg(dev, "%s: aie=%d\n", __func__, enabled);
clk_enable(rtc_clk);
tmp = readb(s3c_rtc_base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
@@ -203,7 +201,7 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
rtc_tm->tm_year += 100;
- pr_debug("read time %04d.%02d.%02d %02d:%02d:%02d\n",
+ dev_dbg(dev, "read time %04d.%02d.%02d %02d:%02d:%02d\n",
1900 + rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday,
rtc_tm->tm_hour, rtc_tm->tm_min, rtc_tm->tm_sec);
@@ -218,7 +216,7 @@ static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
void __iomem *base = s3c_rtc_base;
int year = tm->tm_year - 100;
- pr_debug("set time %04d.%02d.%02d %02d:%02d:%02d\n",
+ dev_dbg(dev, "set time %04d.%02d.%02d %02d:%02d:%02d\n",
1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
@@ -259,7 +257,7 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
alrm->enabled = (alm_en & S3C2410_RTCALM_ALMEN) ? 1 : 0;
- pr_debug("read alarm %d, %04d.%02d.%02d %02d:%02d:%02d\n",
+ dev_dbg(dev, "read alarm %d, %04d.%02d.%02d %02d:%02d:%02d\n",
alm_en,
1900 + alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday,
alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec);
@@ -310,7 +308,7 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
unsigned int alrm_en;
clk_enable(rtc_clk);
- pr_debug("s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",
+ dev_dbg(dev, "s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",
alrm->enabled,
1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
@@ -333,7 +331,7 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
writeb(bin2bcd(tm->tm_hour), base + S3C2410_ALMHOUR);
}
- pr_debug("setting S3C2410_RTCALM to %08x\n", alrm_en);
+ dev_dbg(dev, "setting S3C2410_RTCALM to %08x\n", alrm_en);
writeb(alrm_en, base + S3C2410_RTCALM);
@@ -423,13 +421,9 @@ static void s3c_rtc_enable(struct platform_device *pdev, int en)
static int s3c_rtc_remove(struct platform_device *dev)
{
- struct rtc_device *rtc = platform_get_drvdata(dev);
-
- platform_set_drvdata(dev, NULL);
- rtc_device_unregister(rtc);
-
s3c_rtc_setaie(&dev->dev, 0);
+ clk_unprepare(rtc_clk);
rtc_clk = NULL;
return 0;
@@ -459,7 +453,7 @@ static int s3c_rtc_probe(struct platform_device *pdev)
int ret;
int tmp;
- pr_debug("%s: probe=%p\n", __func__, pdev);
+ dev_dbg(&pdev->dev, "%s: probe=%p\n", __func__, pdev);
/* find the IRQs */
@@ -475,22 +469,15 @@ static int s3c_rtc_probe(struct platform_device *pdev)
return s3c_rtc_alarmno;
}
- pr_debug("s3c2410_rtc: tick irq %d, alarm irq %d\n",
+ dev_dbg(&pdev->dev, "s3c2410_rtc: tick irq %d, alarm irq %d\n",
s3c_rtc_tickno, s3c_rtc_alarmno);
/* get the memory region */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "failed to get memory region resource\n");
- return -ENOENT;
- }
-
- s3c_rtc_base = devm_request_and_ioremap(&pdev->dev, res);
- if (s3c_rtc_base == NULL) {
- dev_err(&pdev->dev, "failed to ioremap memory region\n");
- return -EINVAL;
- }
+ s3c_rtc_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(s3c_rtc_base))
+ return PTR_ERR(s3c_rtc_base);
rtc_clk = devm_clk_get(&pdev->dev, "rtc");
if (IS_ERR(rtc_clk)) {
@@ -500,20 +487,20 @@ static int s3c_rtc_probe(struct platform_device *pdev)
return ret;
}
- clk_enable(rtc_clk);
+ clk_prepare_enable(rtc_clk);
/* check to see if everything is setup correctly */
s3c_rtc_enable(pdev, 1);
- pr_debug("s3c2410_rtc: RTCCON=%02x\n",
+ dev_dbg(&pdev->dev, "s3c2410_rtc: RTCCON=%02x\n",
readw(s3c_rtc_base + S3C2410_RTCCON));
device_init_wakeup(&pdev->dev, 1);
/* register RTC and exit */
- rtc = rtc_device_register("s3c", &pdev->dev, &s3c_rtcops,
+ rtc = devm_rtc_device_register(&pdev->dev, "s3c", &s3c_rtcops,
THIS_MODULE);
if (IS_ERR(rtc)) {
@@ -560,72 +547,78 @@ static int s3c_rtc_probe(struct platform_device *pdev)
0, "s3c2410-rtc alarm", rtc);
if (ret) {
dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_alarmno, ret);
- goto err_alarm_irq;
+ goto err_nortc;
}
ret = devm_request_irq(&pdev->dev, s3c_rtc_tickno, s3c_rtc_tickirq,
0, "s3c2410-rtc tick", rtc);
if (ret) {
dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_tickno, ret);
- goto err_alarm_irq;
+ goto err_nortc;
}
clk_disable(rtc_clk);
return 0;
- err_alarm_irq:
- platform_set_drvdata(pdev, NULL);
- rtc_device_unregister(rtc);
-
err_nortc:
s3c_rtc_enable(pdev, 0);
- clk_disable(rtc_clk);
+ clk_disable_unprepare(rtc_clk);
return ret;
}
-#ifdef CONFIG_PM
-
+#ifdef CONFIG_PM_SLEEP
/* RTC Power management control */
static int ticnt_save, ticnt_en_save;
+static bool wake_en;
-static int s3c_rtc_suspend(struct platform_device *pdev, pm_message_t state)
+static int s3c_rtc_suspend(struct device *dev)
{
+ struct platform_device *pdev = to_platform_device(dev);
+
clk_enable(rtc_clk);
/* save TICNT for anyone using periodic interrupts */
- ticnt_save = readb(s3c_rtc_base + S3C2410_TICNT);
if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
ticnt_en_save = readw(s3c_rtc_base + S3C2410_RTCCON);
ticnt_en_save &= S3C64XX_RTCCON_TICEN;
+ ticnt_save = readl(s3c_rtc_base + S3C2410_TICNT);
+ } else {
+ ticnt_save = readb(s3c_rtc_base + S3C2410_TICNT);
}
s3c_rtc_enable(pdev, 0);
- if (device_may_wakeup(&pdev->dev) && !wake_en) {
+ if (device_may_wakeup(dev) && !wake_en) {
if (enable_irq_wake(s3c_rtc_alarmno) == 0)
wake_en = true;
else
- dev_err(&pdev->dev, "enable_irq_wake failed\n");
+ dev_err(dev, "enable_irq_wake failed\n");
}
clk_disable(rtc_clk);
return 0;
}
-static int s3c_rtc_resume(struct platform_device *pdev)
+static int s3c_rtc_resume(struct device *dev)
{
+ struct platform_device *pdev = to_platform_device(dev);
unsigned int tmp;
clk_enable(rtc_clk);
s3c_rtc_enable(pdev, 1);
- writeb(ticnt_save, s3c_rtc_base + S3C2410_TICNT);
- if (s3c_rtc_cpu_type == TYPE_S3C64XX && ticnt_en_save) {
- tmp = readw(s3c_rtc_base + S3C2410_RTCCON);
- writew(tmp | ticnt_en_save, s3c_rtc_base + S3C2410_RTCCON);
+ if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
+ writel(ticnt_save, s3c_rtc_base + S3C2410_TICNT);
+ if (ticnt_en_save) {
+ tmp = readw(s3c_rtc_base + S3C2410_RTCCON);
+ writew(tmp | ticnt_en_save,
+ s3c_rtc_base + S3C2410_RTCCON);
+ }
+ } else {
+ writeb(ticnt_save, s3c_rtc_base + S3C2410_TICNT);
}
- if (device_may_wakeup(&pdev->dev) && wake_en) {
+ if (device_may_wakeup(dev) && wake_en) {
disable_irq_wake(s3c_rtc_alarmno);
wake_en = false;
}
@@ -633,11 +626,10 @@ static int s3c_rtc_resume(struct platform_device *pdev)
return 0;
}
-#else
-#define s3c_rtc_suspend NULL
-#define s3c_rtc_resume NULL
#endif
+static SIMPLE_DEV_PM_OPS(s3c_rtc_pm_ops, s3c_rtc_suspend, s3c_rtc_resume);
+
#ifdef CONFIG_OF
static struct s3c_rtc_drv_data s3c_rtc_drv_data_array[] = {
[TYPE_S3C2410] = { TYPE_S3C2410 },
@@ -687,12 +679,11 @@ MODULE_DEVICE_TABLE(platform, s3c_rtc_driver_ids);
static struct platform_driver s3c_rtc_driver = {
.probe = s3c_rtc_probe,
.remove = s3c_rtc_remove,
- .suspend = s3c_rtc_suspend,
- .resume = s3c_rtc_resume,
.id_table = s3c_rtc_driver_ids,
.driver = {
.name = "s3c-rtc",
.owner = THIS_MODULE,
+ .pm = &s3c_rtc_pm_ops,
.of_match_table = of_match_ptr(s3c_rtc_dt_match),
},
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 17:27:56 +0000