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rtc: stmp3xxx: Restore register definitions
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The stmp3xxx driver used to include register names from a stmp-specific
include. Because of consolidation, plat-stmp has now been removed and
merged with the compatible mach-mxs. Restore the register names directly
in the driver and rename them to be specific to this driver.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
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Wolfram Sang authored and John Stultz committed Jul 2, 2011
1 parent 07187ee commit 47eac33
Showing 1 changed file with 60 additions and 37 deletions.
97 changes: 60 additions & 37 deletions drivers/rtc/rtc-stmp3xxx.c
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,25 @@

#include <mach/platform.h>
#include <mach/stmp3xxx.h>
#include <mach/regs-rtc.h>

#define STMP3XXX_RTC_CTRL 0x0
#define STMP3XXX_RTC_CTRL_ALARM_IRQ_EN 0x00000001
#define STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN 0x00000002
#define STMP3XXX_RTC_CTRL_ALARM_IRQ 0x00000004
#define STMP3XXX_RTC_CTRL_ONEMSEC_IRQ 0x00000008

#define STMP3XXX_RTC_STAT 0x10
#define STMP3XXX_RTC_STAT_STALE_SHIFT 16
#define STMP3XXX_RTC_STAT_RTC_PRESENT 0x80000000

#define STMP3XXX_RTC_SECONDS 0x30

#define STMP3XXX_RTC_ALARM 0x40

#define STMP3XXX_RTC_PERSISTENT0 0x60
#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN 0x00000002
#define STMP3XXX_RTC_PERSISTENT0_ALARM_EN 0x00000004
#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE 0x00000080

struct stmp3xxx_rtc_data {
struct rtc_device *rtc;
Expand All @@ -42,8 +60,8 @@ static void stmp3xxx_wait_time(struct stmp3xxx_rtc_data *rtc_data)
* NEW_REGS/STALE_REGS bitfields go. In fact it's 0x1=P0,
* 0x2=P1, .., 0x20=P5, 0x40=ALARM, 0x80=SECONDS
*/
while (__raw_readl(rtc_data->io + HW_RTC_STAT) &
BF(0x80, RTC_STAT_STALE_REGS))
while (__raw_readl(rtc_data->io + STMP3XXX_RTC_STAT) &
(0x80 << STMP3XXX_RTC_STAT_STALE_SHIFT))
cpu_relax();
}

Expand All @@ -53,15 +71,16 @@ static int stmp3xxx_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);

stmp3xxx_wait_time(rtc_data);
rtc_time_to_tm(__raw_readl(rtc_data->io + HW_RTC_SECONDS), rtc_tm);
rtc_time_to_tm(__raw_readl(rtc_data->io + STMP3XXX_RTC_SECONDS),
rtc_tm);
return 0;
}

static int stmp3xxx_rtc_set_mmss(struct device *dev, unsigned long t)
{
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);

__raw_writel(t, rtc_data->io + HW_RTC_SECONDS);
__raw_writel(t, rtc_data->io + STMP3XXX_RTC_SECONDS);
stmp3xxx_wait_time(rtc_data);
return 0;
}
Expand All @@ -73,18 +92,19 @@ static irqreturn_t stmp3xxx_rtc_interrupt(int irq, void *dev_id)
u32 status;
u32 events = 0;

status = __raw_readl(rtc_data->io + HW_RTC_CTRL) &
(BM_RTC_CTRL_ALARM_IRQ | BM_RTC_CTRL_ONEMSEC_IRQ);
status = __raw_readl(rtc_data->io + STMP3XXX_RTC_CTRL) &
(STMP3XXX_RTC_CTRL_ALARM_IRQ |
STMP3XXX_RTC_CTRL_ONEMSEC_IRQ);

if (status & BM_RTC_CTRL_ALARM_IRQ) {
stmp3xxx_clearl(BM_RTC_CTRL_ALARM_IRQ,
rtc_data->io + HW_RTC_CTRL);
if (status & STMP3XXX_RTC_CTRL_ALARM_IRQ) {
stmp3xxx_clearl(STMP3XXX_RTC_CTRL_ALARM_IRQ,
rtc_data->io + STMP3XXX_RTC_CTRL);
events |= RTC_AF | RTC_IRQF;
}

if (status & BM_RTC_CTRL_ONEMSEC_IRQ) {
stmp3xxx_clearl(BM_RTC_CTRL_ONEMSEC_IRQ,
rtc_data->io + HW_RTC_CTRL);
if (status & STMP3XXX_RTC_CTRL_ONEMSEC_IRQ) {
stmp3xxx_clearl(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ,
rtc_data->io + STMP3XXX_RTC_CTRL);
if (++rtc_data->irq_count % 1000 == 0) {
events |= RTC_UF | RTC_IRQF;
rtc_data->irq_count = 0;
Expand All @@ -100,17 +120,17 @@ static irqreturn_t stmp3xxx_rtc_interrupt(int irq, void *dev_id)
static int stmp3xxx_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);
void __iomem *p = rtc_data->io + HW_RTC_PERSISTENT0,
*ctl = rtc_data->io + HW_RTC_CTRL;
void __iomem *p = rtc_data->io + STMP3XXX_RTC_PERSISTENT0,
*ctl = rtc_data->io + STMP3XXX_RTC_CTRL;

if (enabled) {
stmp3xxx_setl(BM_RTC_PERSISTENT0_ALARM_EN |
BM_RTC_PERSISTENT0_ALARM_WAKE_EN, p);
stmp3xxx_setl(BM_RTC_CTRL_ALARM_IRQ_EN, ctl);
stmp3xxx_setl(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN, p);
stmp3xxx_setl(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, ctl);
} else {
stmp3xxx_clearl(BM_RTC_PERSISTENT0_ALARM_EN |
BM_RTC_PERSISTENT0_ALARM_WAKE_EN, p);
stmp3xxx_clearl(BM_RTC_CTRL_ALARM_IRQ_EN, ctl);
stmp3xxx_clearl(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN, p);
stmp3xxx_clearl(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, ctl);
}
return 0;
}
Expand All @@ -119,7 +139,8 @@ static int stmp3xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);

rtc_time_to_tm(__raw_readl(rtc_data->io + HW_RTC_ALARM), &alm->time);
rtc_time_to_tm(__raw_readl(rtc_data->io + STMP3XXX_RTC_ALARM),
&alm->time);
return 0;
}

Expand All @@ -129,7 +150,7 @@ static int stmp3xxx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);

rtc_tm_to_time(&alm->time, &t);
__raw_writel(t, rtc_data->io + HW_RTC_ALARM);
__raw_writel(t, rtc_data->io + STMP3XXX_RTC_ALARM);
return 0;
}

Expand All @@ -149,8 +170,9 @@ static int stmp3xxx_rtc_remove(struct platform_device *pdev)
if (!rtc_data)
return 0;

stmp3xxx_clearl(BM_RTC_CTRL_ONEMSEC_IRQ_EN | BM_RTC_CTRL_ALARM_IRQ_EN,
rtc_data->io + HW_RTC_CTRL);
stmp3xxx_clearl(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN |
STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
rtc_data->io + STMP3XXX_RTC_CTRL);
free_irq(rtc_data->irq_alarm, &pdev->dev);
free_irq(rtc_data->irq_1msec, &pdev->dev);
rtc_device_unregister(rtc_data->rtc);
Expand Down Expand Up @@ -187,18 +209,18 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
rtc_data->irq_alarm = platform_get_irq(pdev, 0);
rtc_data->irq_1msec = platform_get_irq(pdev, 1);

if (!(__raw_readl(HW_RTC_STAT + rtc_data->io) &
BM_RTC_STAT_RTC_PRESENT)) {
if (!(__raw_readl(STMP3XXX_RTC_STAT + rtc_data->io) &
STMP3XXX_RTC_STAT_RTC_PRESENT)) {
dev_err(&pdev->dev, "no device onboard\n");
err = -ENODEV;
goto out_remap;
}

stmp3xxx_reset_block(rtc_data->io, true);
stmp3xxx_clearl(BM_RTC_PERSISTENT0_ALARM_EN |
BM_RTC_PERSISTENT0_ALARM_WAKE_EN |
BM_RTC_PERSISTENT0_ALARM_WAKE,
rtc_data->io + HW_RTC_PERSISTENT0);
stmp3xxx_clearl(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE,
rtc_data->io + STMP3XXX_RTC_PERSISTENT0);
rtc_data->rtc = rtc_device_register(pdev->name, &pdev->dev,
&stmp3xxx_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc_data->rtc)) {
Expand Down Expand Up @@ -229,8 +251,9 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
out_irq1:
free_irq(rtc_data->irq_alarm, &pdev->dev);
out_irq_alarm:
stmp3xxx_clearl(BM_RTC_CTRL_ONEMSEC_IRQ_EN | BM_RTC_CTRL_ALARM_IRQ_EN,
rtc_data->io + HW_RTC_CTRL);
stmp3xxx_clearl(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN |
STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
rtc_data->io + STMP3XXX_RTC_CTRL);
rtc_device_unregister(rtc_data->rtc);
out_remap:
iounmap(rtc_data->io);
Expand All @@ -250,10 +273,10 @@ static int stmp3xxx_rtc_resume(struct platform_device *dev)
struct stmp3xxx_rtc_data *rtc_data = platform_get_drvdata(dev);

stmp3xxx_reset_block(rtc_data->io, true);
stmp3xxx_clearl(BM_RTC_PERSISTENT0_ALARM_EN |
BM_RTC_PERSISTENT0_ALARM_WAKE_EN |
BM_RTC_PERSISTENT0_ALARM_WAKE,
rtc_data->io + HW_RTC_PERSISTENT0);
stmp3xxx_clearl(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE,
rtc_data->io + STMP3XXX_RTC_PERSISTENT0);
return 0;
}
#else
Expand Down

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