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rtc: pm8xxx: fixup checkpatch/style issues

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This patchset is based on Stephen Boyd's PM8921 modernization/cleanups
(http://lkml.kernel.org/g/1393441166-32692-1-git-send-email-sboyd@codeaurora.org),
and allows for this RTC driver to be usable again.

This patch (of 6):

Before performing additional cleanups to this driver, do the easy cleanups
first.

Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Josh Cartwright 2014-04-03 14:50:10 -07:00 committed by Linus Torvalds
parent 131c9cc832
commit 5bed811d66
1 changed files with 53 additions and 44 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

97
drivers/rtc/rtc-pm8xxx.c
View file

@ -53,7 +53,7 @@ struct pm8xxx_rtc {
int rtc_read_base; int rtc_read_base;
int rtc_write_base; int rtc_write_base;
int alarm_rw_base; int alarm_rw_base;
u8 ctrl_reg; u8 ctrl_reg;
struct device *rtc_dev; struct device *rtc_dev;
spinlock_t ctrl_reg_lock; spinlock_t ctrl_reg_lock;
}; };
@ -63,7 +63,7 @@ struct pm8xxx_rtc {
* hardware limitation. * hardware limitation.
*/ */
static int pm8xxx_read_wrapper(struct pm8xxx_rtc *rtc_dd, u8 *rtc_val, static int pm8xxx_read_wrapper(struct pm8xxx_rtc *rtc_dd, u8 *rtc_val,
int base, int count) int base, int count)
{ {
int i, rc; int i, rc;
struct device *parent = rtc_dd->rtc_dev->parent; struct device *parent = rtc_dd->rtc_dev->parent;
@ -80,7 +80,7 @@ static int pm8xxx_read_wrapper(struct pm8xxx_rtc *rtc_dd, u8 *rtc_val,
} }
static int pm8xxx_write_wrapper(struct pm8xxx_rtc *rtc_dd, u8 *rtc_val, static int pm8xxx_write_wrapper(struct pm8xxx_rtc *rtc_dd, u8 *rtc_val,
int base, int count) int base, int count)
{ {
int i, rc; int i, rc;
struct device *parent = rtc_dd->rtc_dev->parent; struct device *parent = rtc_dd->rtc_dev->parent;
@ -126,15 +126,15 @@ static int pm8xxx_rtc_set_time(struct device *dev, struct rtc_time *tm)
alarm_enabled = 1; alarm_enabled = 1;
ctrl_reg &= ~PM8xxx_RTC_ALARM_ENABLE; ctrl_reg &= ~PM8xxx_RTC_ALARM_ENABLE;
rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base, rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base,
1); 1);
if (rc < 0) { if (rc < 0) {
dev_err(dev, "Write to RTC control register " dev_err(dev, "Write to RTC control register failed\n");
"failed\n");
goto rtc_rw_fail; goto rtc_rw_fail;
} }
rtc_dd->ctrl_reg = ctrl_reg; rtc_dd->ctrl_reg = ctrl_reg;
} else } else {
spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags); spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags);
}
/* Write 0 to Byte[0] */ /* Write 0 to Byte[0] */
reg = 0; reg = 0;
@ -146,7 +146,7 @@ static int pm8xxx_rtc_set_time(struct device *dev, struct rtc_time *tm)
/* Write Byte[1], Byte[2], Byte[3] */ /* Write Byte[1], Byte[2], Byte[3] */
rc = pm8xxx_write_wrapper(rtc_dd, value + 1, rc = pm8xxx_write_wrapper(rtc_dd, value + 1,
rtc_dd->rtc_write_base + 1, 3); rtc_dd->rtc_write_base + 1, 3);
if (rc < 0) { if (rc < 0) {
dev_err(dev, "Write to RTC write data register failed\n"); dev_err(dev, "Write to RTC write data register failed\n");
goto rtc_rw_fail; goto rtc_rw_fail;
@ -162,10 +162,9 @@ static int pm8xxx_rtc_set_time(struct device *dev, struct rtc_time *tm)
if (alarm_enabled) { if (alarm_enabled) {
ctrl_reg |= PM8xxx_RTC_ALARM_ENABLE; ctrl_reg |= PM8xxx_RTC_ALARM_ENABLE;
rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base, rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base,
1); 1);
if (rc < 0) { if (rc < 0) {
dev_err(dev, "Write to RTC control register " dev_err(dev, "Write to RTC control register failed\n");
"failed\n");
goto rtc_rw_fail; goto rtc_rw_fail;
} }
rtc_dd->ctrl_reg = ctrl_reg; rtc_dd->ctrl_reg = ctrl_reg;
@ -186,7 +185,7 @@ static int pm8xxx_rtc_read_time(struct device *dev, struct rtc_time *tm)
struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev); struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev);
rc = pm8xxx_read_wrapper(rtc_dd, value, rtc_dd->rtc_read_base, rc = pm8xxx_read_wrapper(rtc_dd, value, rtc_dd->rtc_read_base,
NUM_8_BIT_RTC_REGS); NUM_8_BIT_RTC_REGS);
if (rc < 0) { if (rc < 0) {
dev_err(dev, "RTC read data register failed\n"); dev_err(dev, "RTC read data register failed\n");
return rc; return rc;
@ -204,7 +203,8 @@ static int pm8xxx_rtc_read_time(struct device *dev, struct rtc_time *tm)
if (unlikely(reg < value[0])) { if (unlikely(reg < value[0])) {
rc = pm8xxx_read_wrapper(rtc_dd, value, rc = pm8xxx_read_wrapper(rtc_dd, value,
rtc_dd->rtc_read_base, NUM_8_BIT_RTC_REGS); rtc_dd->rtc_read_base,
NUM_8_BIT_RTC_REGS);
if (rc < 0) { if (rc < 0) {
dev_err(dev, "RTC read data register failed\n"); dev_err(dev, "RTC read data register failed\n");
return rc; return rc;
@ -222,8 +222,8 @@ static int pm8xxx_rtc_read_time(struct device *dev, struct rtc_time *tm)
} }
dev_dbg(dev, "secs = %lu, h:m:s == %d:%d:%d, d/m/y = %d/%d/%d\n", dev_dbg(dev, "secs = %lu, h:m:s == %d:%d:%d, d/m/y = %d/%d/%d\n",
secs, tm->tm_hour, tm->tm_min, tm->tm_sec, secs, tm->tm_hour, tm->tm_min, tm->tm_sec,
tm->tm_mday, tm->tm_mon, tm->tm_year); tm->tm_mday, tm->tm_mon, tm->tm_year);
return 0; return 0;
} }
@ -245,15 +245,18 @@ static int pm8xxx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags); spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags);
rc = pm8xxx_write_wrapper(rtc_dd, value, rtc_dd->alarm_rw_base, rc = pm8xxx_write_wrapper(rtc_dd, value, rtc_dd->alarm_rw_base,
NUM_8_BIT_RTC_REGS); NUM_8_BIT_RTC_REGS);
if (rc < 0) { if (rc < 0) {
dev_err(dev, "Write to RTC ALARM register failed\n"); dev_err(dev, "Write to RTC ALARM register failed\n");
goto rtc_rw_fail; goto rtc_rw_fail;
} }
ctrl_reg = rtc_dd->ctrl_reg; ctrl_reg = rtc_dd->ctrl_reg;
ctrl_reg = alarm->enabled ? (ctrl_reg | PM8xxx_RTC_ALARM_ENABLE) :
(ctrl_reg & ~PM8xxx_RTC_ALARM_ENABLE); if (alarm->enabled)
ctrl_reg |= PM8xxx_RTC_ALARM_ENABLE;
else
ctrl_reg &= ~PM8xxx_RTC_ALARM_ENABLE;
rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base, 1); rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base, 1);
if (rc < 0) { if (rc < 0) {
@ -264,9 +267,9 @@ static int pm8xxx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
rtc_dd->ctrl_reg = ctrl_reg; rtc_dd->ctrl_reg = ctrl_reg;
dev_dbg(dev, "Alarm Set for h:r:s=%d:%d:%d, d/m/y=%d/%d/%d\n", dev_dbg(dev, "Alarm Set for h:r:s=%d:%d:%d, d/m/y=%d/%d/%d\n",
alarm->time.tm_hour, alarm->time.tm_min, alarm->time.tm_hour, alarm->time.tm_min,
alarm->time.tm_sec, alarm->time.tm_mday, alarm->time.tm_sec, alarm->time.tm_mday,
alarm->time.tm_mon, alarm->time.tm_year); alarm->time.tm_mon, alarm->time.tm_year);
rtc_rw_fail: rtc_rw_fail:
spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags); spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags);
return rc; return rc;
@ -280,7 +283,7 @@ static int pm8xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev); struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev);
rc = pm8xxx_read_wrapper(rtc_dd, value, rtc_dd->alarm_rw_base, rc = pm8xxx_read_wrapper(rtc_dd, value, rtc_dd->alarm_rw_base,
NUM_8_BIT_RTC_REGS); NUM_8_BIT_RTC_REGS);
if (rc < 0) { if (rc < 0) {
dev_err(dev, "RTC alarm time read failed\n"); dev_err(dev, "RTC alarm time read failed\n");
return rc; return rc;
@ -297,9 +300,9 @@ static int pm8xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
} }
dev_dbg(dev, "Alarm set for - h:r:s=%d:%d:%d, d/m/y=%d/%d/%d\n", dev_dbg(dev, "Alarm set for - h:r:s=%d:%d:%d, d/m/y=%d/%d/%d\n",
alarm->time.tm_hour, alarm->time.tm_min, alarm->time.tm_hour, alarm->time.tm_min,
alarm->time.tm_sec, alarm->time.tm_mday, alarm->time.tm_sec, alarm->time.tm_mday,
alarm->time.tm_mon, alarm->time.tm_year); alarm->time.tm_mon, alarm->time.tm_year);
return 0; return 0;
} }
@ -312,9 +315,13 @@ static int pm8xxx_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
u8 ctrl_reg; u8 ctrl_reg;
spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags); spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags);
ctrl_reg = rtc_dd->ctrl_reg; ctrl_reg = rtc_dd->ctrl_reg;
ctrl_reg = (enable) ? (ctrl_reg | PM8xxx_RTC_ALARM_ENABLE) :
(ctrl_reg & ~PM8xxx_RTC_ALARM_ENABLE); if (enable)
ctrl_reg |= PM8xxx_RTC_ALARM_ENABLE;
else
ctrl_reg &= ~PM8xxx_RTC_ALARM_ENABLE;
rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base, 1); rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base, 1);
if (rc < 0) { if (rc < 0) {
@ -354,8 +361,8 @@ static irqreturn_t pm8xxx_alarm_trigger(int irq, void *dev_id)
rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base, 1); rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base, 1);
if (rc < 0) { if (rc < 0) {
spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags); spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags);
dev_err(rtc_dd->rtc_dev, "Write to RTC control register " dev_err(rtc_dd->rtc_dev,
"failed\n"); "Write to RTC control register failed\n");
goto rtc_alarm_handled; goto rtc_alarm_handled;
} }
@ -364,19 +371,19 @@ static irqreturn_t pm8xxx_alarm_trigger(int irq, void *dev_id)
/* Clear RTC alarm register */ /* Clear RTC alarm register */
rc = pm8xxx_read_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base + rc = pm8xxx_read_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base +
PM8XXX_ALARM_CTRL_OFFSET, 1); PM8XXX_ALARM_CTRL_OFFSET, 1);
if (rc < 0) { if (rc < 0) {
dev_err(rtc_dd->rtc_dev, "RTC Alarm control register read " dev_err(rtc_dd->rtc_dev,
"failed\n"); "RTC Alarm control register read failed\n");
goto rtc_alarm_handled; goto rtc_alarm_handled;
} }
ctrl_reg &= ~PM8xxx_RTC_ALARM_CLEAR; ctrl_reg &= ~PM8xxx_RTC_ALARM_CLEAR;
rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base + rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base +
PM8XXX_ALARM_CTRL_OFFSET, 1); PM8XXX_ALARM_CTRL_OFFSET, 1);
if (rc < 0) if (rc < 0)
dev_err(rtc_dd->rtc_dev, "Write to RTC Alarm control register" dev_err(rtc_dd->rtc_dev,
" failed\n"); "Write to RTC Alarm control register failed\n");
rtc_alarm_handled: rtc_alarm_handled:
return IRQ_HANDLED; return IRQ_HANDLED;
@ -409,7 +416,7 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev)
} }
rtc_resource = platform_get_resource_byname(pdev, IORESOURCE_IO, rtc_resource = platform_get_resource_byname(pdev, IORESOURCE_IO,
"pmic_rtc_base"); "pmic_rtc_base");
if (!(rtc_resource && rtc_resource->start)) { if (!(rtc_resource && rtc_resource->start)) {
dev_err(&pdev->dev, "RTC IO resource absent!\n"); dev_err(&pdev->dev, "RTC IO resource absent!\n");
return -ENXIO; return -ENXIO;
@ -436,31 +443,31 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev)
rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base, rc = pm8xxx_write_wrapper(rtc_dd, &ctrl_reg, rtc_dd->rtc_base,
1); 1);
if (rc < 0) { if (rc < 0) {
dev_err(&pdev->dev, "Write to RTC control register " dev_err(&pdev->dev,
"failed\n"); "Write to RTC control register failed\n");
return rc; return rc;
} }
} }
rtc_dd->ctrl_reg = ctrl_reg; rtc_dd->ctrl_reg = ctrl_reg;
if (rtc_write_enable == true) if (rtc_write_enable)
pm8xxx_rtc_ops.set_time = pm8xxx_rtc_set_time; pm8xxx_rtc_ops.set_time = pm8xxx_rtc_set_time;
platform_set_drvdata(pdev, rtc_dd); platform_set_drvdata(pdev, rtc_dd);
/* Register the RTC device */ /* Register the RTC device */
rtc_dd->rtc = devm_rtc_device_register(&pdev->dev, "pm8xxx_rtc", rtc_dd->rtc = devm_rtc_device_register(&pdev->dev, "pm8xxx_rtc",
&pm8xxx_rtc_ops, THIS_MODULE); &pm8xxx_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc_dd->rtc)) { if (IS_ERR(rtc_dd->rtc)) {
dev_err(&pdev->dev, "%s: RTC registration failed (%ld)\n", dev_err(&pdev->dev, "%s: RTC registration failed (%ld)\n",
__func__, PTR_ERR(rtc_dd->rtc)); __func__, PTR_ERR(rtc_dd->rtc));
return PTR_ERR(rtc_dd->rtc); return PTR_ERR(rtc_dd->rtc);
} }
/* Request the alarm IRQ */ /* Request the alarm IRQ */
rc = request_any_context_irq(rtc_dd->rtc_alarm_irq, rc = request_any_context_irq(rtc_dd->rtc_alarm_irq,
pm8xxx_alarm_trigger, IRQF_TRIGGER_RISING, pm8xxx_alarm_trigger, IRQF_TRIGGER_RISING,
"pm8xxx_rtc_alarm", rtc_dd); "pm8xxx_rtc_alarm", rtc_dd);
if (rc < 0) { if (rc < 0) {
dev_err(&pdev->dev, "Request IRQ failed (%d)\n", rc); dev_err(&pdev->dev, "Request IRQ failed (%d)\n", rc);
return rc; return rc;
@ -505,7 +512,9 @@ static int pm8xxx_rtc_suspend(struct device *dev)
} }
#endif #endif
static SIMPLE_DEV_PM_OPS(pm8xxx_rtc_pm_ops, pm8xxx_rtc_suspend, pm8xxx_rtc_resume); static SIMPLE_DEV_PM_OPS(pm8xxx_rtc_pm_ops,
pm8xxx_rtc_suspend,
pm8xxx_rtc_resume);
static struct platform_driver pm8xxx_rtc_driver = { static struct platform_driver pm8xxx_rtc_driver = {
.probe = pm8xxx_rtc_probe, .probe = pm8xxx_rtc_probe,