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Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-tegra.c118
1 files changed, 58 insertions, 60 deletions
diff --git a/drivers/rtc/rtc-tegra.c b/drivers/rtc/rtc-tegra.c
index a67c9d8be4f6..b68ba2dd1d36 100644
--- a/drivers/rtc/rtc-tegra.c
+++ b/drivers/rtc/rtc-tegra.c
@@ -47,11 +47,11 @@
struct tegra_rtc_info {
struct platform_device *pdev;
- struct rtc_device *rtc_dev;
- void __iomem *rtc_base; /* NULL if not initialized */
+ struct rtc_device *rtc;
+ void __iomem *base; /* NULL if not initialized */
struct clk *clk;
- int tegra_rtc_irq; /* alarm and periodic IRQ */
- spinlock_t tegra_rtc_lock;
+ int irq; /* alarm and periodic IRQ */
+ spinlock_t lock;
};
/*
@@ -61,7 +61,7 @@ struct tegra_rtc_info {
*/
static inline u32 tegra_rtc_check_busy(struct tegra_rtc_info *info)
{
- return readl(info->rtc_base + TEGRA_RTC_REG_BUSY) & 1;
+ return readl(info->base + TEGRA_RTC_REG_BUSY) & 1;
}
/*
@@ -102,19 +102,19 @@ retry_failed:
static int tegra_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct tegra_rtc_info *info = dev_get_drvdata(dev);
- unsigned long sec, msec;
- unsigned long sl_irq_flags;
+ unsigned long flags;
+ u32 sec, msec;
/*
* RTC hardware copies seconds to shadow seconds when a read of
* milliseconds occurs. use a lock to keep other threads out.
*/
- spin_lock_irqsave(&info->tegra_rtc_lock, sl_irq_flags);
+ spin_lock_irqsave(&info->lock, flags);
- msec = readl(info->rtc_base + TEGRA_RTC_REG_MILLI_SECONDS);
- sec = readl(info->rtc_base + TEGRA_RTC_REG_SHADOW_SECONDS);
+ msec = readl(info->base + TEGRA_RTC_REG_MILLI_SECONDS);
+ sec = readl(info->base + TEGRA_RTC_REG_SHADOW_SECONDS);
- spin_unlock_irqrestore(&info->tegra_rtc_lock, sl_irq_flags);
+ spin_unlock_irqrestore(&info->lock, flags);
rtc_time64_to_tm(sec, tm);
@@ -126,7 +126,7 @@ static int tegra_rtc_read_time(struct device *dev, struct rtc_time *tm)
static int tegra_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct tegra_rtc_info *info = dev_get_drvdata(dev);
- unsigned long sec;
+ u32 sec;
int ret;
/* convert tm to seconds */
@@ -137,10 +137,10 @@ static int tegra_rtc_set_time(struct device *dev, struct rtc_time *tm)
/* seconds only written if wait succeeded */
ret = tegra_rtc_wait_while_busy(dev);
if (!ret)
- writel(sec, info->rtc_base + TEGRA_RTC_REG_SECONDS);
+ writel(sec, info->base + TEGRA_RTC_REG_SECONDS);
dev_vdbg(dev, "time read back as %d\n",
- readl(info->rtc_base + TEGRA_RTC_REG_SECONDS));
+ readl(info->base + TEGRA_RTC_REG_SECONDS));
return ret;
}
@@ -148,10 +148,9 @@ static int tegra_rtc_set_time(struct device *dev, struct rtc_time *tm)
static int tegra_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
struct tegra_rtc_info *info = dev_get_drvdata(dev);
- unsigned long sec;
- unsigned int tmp;
+ u32 sec, value;
- sec = readl(info->rtc_base + TEGRA_RTC_REG_SECONDS_ALARM0);
+ sec = readl(info->base + TEGRA_RTC_REG_SECONDS_ALARM0);
if (sec == 0) {
/* alarm is disabled */
@@ -162,8 +161,8 @@ static int tegra_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
rtc_time64_to_tm(sec, &alarm->time);
}
- tmp = readl(info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
- alarm->pending = (tmp & TEGRA_RTC_INTR_STATUS_SEC_ALARM0) != 0;
+ value = readl(info->base + TEGRA_RTC_REG_INTR_STATUS);
+ alarm->pending = (value & TEGRA_RTC_INTR_STATUS_SEC_ALARM0) != 0;
return 0;
}
@@ -171,22 +170,22 @@ static int tegra_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
static int tegra_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct tegra_rtc_info *info = dev_get_drvdata(dev);
- unsigned long sl_irq_flags;
- unsigned int status;
+ unsigned long flags;
+ u32 status;
tegra_rtc_wait_while_busy(dev);
- spin_lock_irqsave(&info->tegra_rtc_lock, sl_irq_flags);
+ spin_lock_irqsave(&info->lock, flags);
/* read the original value, and OR in the flag */
- status = readl(info->rtc_base + TEGRA_RTC_REG_INTR_MASK);
+ status = readl(info->base + TEGRA_RTC_REG_INTR_MASK);
if (enabled)
status |= TEGRA_RTC_INTR_MASK_SEC_ALARM0; /* set it */
else
status &= ~TEGRA_RTC_INTR_MASK_SEC_ALARM0; /* clear it */
- writel(status, info->rtc_base + TEGRA_RTC_REG_INTR_MASK);
+ writel(status, info->base + TEGRA_RTC_REG_INTR_MASK);
- spin_unlock_irqrestore(&info->tegra_rtc_lock, sl_irq_flags);
+ spin_unlock_irqrestore(&info->lock, flags);
return 0;
}
@@ -194,7 +193,7 @@ static int tegra_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
static int tegra_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
struct tegra_rtc_info *info = dev_get_drvdata(dev);
- unsigned long sec;
+ u32 sec;
if (alarm->enabled)
sec = rtc_tm_to_time64(&alarm->time);
@@ -202,9 +201,9 @@ static int tegra_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
sec = 0;
tegra_rtc_wait_while_busy(dev);
- writel(sec, info->rtc_base + TEGRA_RTC_REG_SECONDS_ALARM0);
+ writel(sec, info->base + TEGRA_RTC_REG_SECONDS_ALARM0);
dev_vdbg(dev, "alarm read back as %d\n",
- readl(info->rtc_base + TEGRA_RTC_REG_SECONDS_ALARM0));
+ readl(info->base + TEGRA_RTC_REG_SECONDS_ALARM0));
/* if successfully written and alarm is enabled ... */
if (sec) {
@@ -233,19 +232,18 @@ static irqreturn_t tegra_rtc_irq_handler(int irq, void *data)
{
struct device *dev = data;
struct tegra_rtc_info *info = dev_get_drvdata(dev);
- unsigned long events = 0;
- unsigned long sl_irq_flags;
- unsigned int status;
+ unsigned long events = 0, flags;
+ u32 status;
- status = readl(info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
+ status = readl(info->base + TEGRA_RTC_REG_INTR_STATUS);
if (status) {
/* clear the interrupt masks and status on any IRQ */
tegra_rtc_wait_while_busy(dev);
- spin_lock_irqsave(&info->tegra_rtc_lock, sl_irq_flags);
- writel(0, info->rtc_base + TEGRA_RTC_REG_INTR_MASK);
- writel(status, info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
- spin_unlock_irqrestore(&info->tegra_rtc_lock, sl_irq_flags);
+ spin_lock_irqsave(&info->lock, flags);
+ writel(0, info->base + TEGRA_RTC_REG_INTR_MASK);
+ writel(status, info->base + TEGRA_RTC_REG_INTR_STATUS);
+ spin_unlock_irqrestore(&info->lock, flags);
}
/* check if alarm */
@@ -256,7 +254,7 @@ static irqreturn_t tegra_rtc_irq_handler(int irq, void *data)
if (status & TEGRA_RTC_INTR_STATUS_SEC_CDN_ALARM)
events |= RTC_IRQF | RTC_PF;
- rtc_update_irq(info->rtc_dev, 1, events);
+ rtc_update_irq(info->rtc, 1, events);
return IRQ_HANDLED;
}
@@ -287,9 +285,9 @@ static int __init tegra_rtc_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- info->rtc_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(info->rtc_base))
- return PTR_ERR(info->rtc_base);
+ info->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(info->base))
+ return PTR_ERR(info->base);
ret = platform_get_irq(pdev, 0);
if (ret <= 0) {
@@ -297,14 +295,14 @@ static int __init tegra_rtc_probe(struct platform_device *pdev)
return ret;
}
- info->tegra_rtc_irq = ret;
+ info->irq = ret;
- info->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
- if (IS_ERR(info->rtc_dev))
- return PTR_ERR(info->rtc_dev);
+ info->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(info->rtc))
+ return PTR_ERR(info->rtc);
- info->rtc_dev->ops = &tegra_rtc_ops;
- info->rtc_dev->range_max = U32_MAX;
+ info->rtc->ops = &tegra_rtc_ops;
+ info->rtc->range_max = U32_MAX;
info->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(info->clk))
@@ -316,26 +314,26 @@ static int __init tegra_rtc_probe(struct platform_device *pdev)
/* set context info */
info->pdev = pdev;
- spin_lock_init(&info->tegra_rtc_lock);
+ spin_lock_init(&info->lock);
platform_set_drvdata(pdev, info);
/* clear out the hardware */
- writel(0, info->rtc_base + TEGRA_RTC_REG_SECONDS_ALARM0);
- writel(0xffffffff, info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
- writel(0, info->rtc_base + TEGRA_RTC_REG_INTR_MASK);
+ writel(0, info->base + TEGRA_RTC_REG_SECONDS_ALARM0);
+ writel(0xffffffff, info->base + TEGRA_RTC_REG_INTR_STATUS);
+ writel(0, info->base + TEGRA_RTC_REG_INTR_MASK);
device_init_wakeup(&pdev->dev, 1);
- ret = devm_request_irq(&pdev->dev, info->tegra_rtc_irq,
- tegra_rtc_irq_handler, IRQF_TRIGGER_HIGH,
- dev_name(&pdev->dev), &pdev->dev);
+ ret = devm_request_irq(&pdev->dev, info->irq, tegra_rtc_irq_handler,
+ IRQF_TRIGGER_HIGH, dev_name(&pdev->dev),
+ &pdev->dev);
if (ret) {
dev_err(&pdev->dev, "failed to request interrupt: %d\n", ret);
goto disable_clk;
}
- ret = rtc_register_device(info->rtc_dev);
+ ret = rtc_register_device(info->rtc);
if (ret) {
dev_err(&pdev->dev, "failed to register device: %d\n", ret);
goto disable_clk;
@@ -367,19 +365,19 @@ static int tegra_rtc_suspend(struct device *dev)
tegra_rtc_wait_while_busy(dev);
/* only use ALARM0 as a wake source */
- writel(0xffffffff, info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
+ writel(0xffffffff, info->base + TEGRA_RTC_REG_INTR_STATUS);
writel(TEGRA_RTC_INTR_STATUS_SEC_ALARM0,
- info->rtc_base + TEGRA_RTC_REG_INTR_MASK);
+ info->base + TEGRA_RTC_REG_INTR_MASK);
dev_vdbg(dev, "alarm sec = %d\n",
- readl(info->rtc_base + TEGRA_RTC_REG_SECONDS_ALARM0));
+ readl(info->base + TEGRA_RTC_REG_SECONDS_ALARM0));
dev_vdbg(dev, "Suspend (device_may_wakeup=%d) IRQ:%d\n",
- device_may_wakeup(dev), info->tegra_rtc_irq);
+ device_may_wakeup(dev), info->irq);
/* leave the alarms on as a wake source */
if (device_may_wakeup(dev))
- enable_irq_wake(info->tegra_rtc_irq);
+ enable_irq_wake(info->irq);
return 0;
}
@@ -393,7 +391,7 @@ static int tegra_rtc_resume(struct device *dev)
/* alarms were left on as a wake source, turn them off */
if (device_may_wakeup(dev))
- disable_irq_wake(info->tegra_rtc_irq);
+ disable_irq_wake(info->irq);
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 17:20:16 +0000