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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-22 23:52:39 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-22 23:52:39 (GMT) |
commit | 52de84f3f3f407013a7f7872601e7a43a505abd3 (patch) | |
tree | cfd7ac2fd9a928d4855eb90be06d25947f90f1ef /drivers | |
parent | 112ec469663e09ffc815761254b52f3ca787ce83 (diff) | |
parent | ef68c8f87ed13f65df867dddf36c0e185b27b942 (diff) | |
download | linux-52de84f3f3f407013a7f7872601e7a43a505abd3.tar.xz |
Merge branch 'timers-rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Serialize EFI time accesses on rtc_lock
x86: Serialize SMP bootup CMOS accesses on rtc_lock
rtc: stmp3xxx: Remove UIE handlers
rtc: stmp3xxx: Get rid of mach-specific accessors
rtc: stmp3xxx: Initialize drvdata before registering device
rtc: stmp3xxx: Port stmp-functions to mxs-equivalents
rtc: stmp3xxx: Restore register definitions
rtc: vt8500: Use define instead of hardcoded value for status bit
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/rtc/Kconfig | 6 | ||||
-rw-r--r-- | drivers/rtc/rtc-stmp3xxx.c | 153 | ||||
-rw-r--r-- | drivers/rtc/rtc-vt8500.c | 6 |
3 files changed, 86 insertions, 79 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index ce2aabf..dcb61e2 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -981,11 +981,11 @@ config RTC_DRV_COH901331 config RTC_DRV_STMP - tristate "Freescale STMP3xxx RTC" - depends on ARCH_STMP3XXX + tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC" + depends on ARCH_MXS help If you say yes here you will get support for the onboard - STMP3xxx RTC. + STMP3xxx/i.MX23/i.MX28 RTC. This driver can also be built as a module. If so, the module will be called rtc-stmp3xxx. diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c index 572e953..7315068 100644 --- a/drivers/rtc/rtc-stmp3xxx.c +++ b/drivers/rtc/rtc-stmp3xxx.c @@ -6,6 +6,7 @@ * * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved. * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved. + * Copyright 2011 Wolfram Sang, Pengutronix e.K. */ /* @@ -18,21 +19,41 @@ */ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/io.h> #include <linux/init.h> #include <linux/platform_device.h> #include <linux/interrupt.h> #include <linux/rtc.h> #include <linux/slab.h> -#include <mach/platform.h> -#include <mach/stmp3xxx.h> -#include <mach/regs-rtc.h> +#include <mach/common.h> + +#define STMP3XXX_RTC_CTRL 0x0 +#define STMP3XXX_RTC_CTRL_SET 0x4 +#define STMP3XXX_RTC_CTRL_CLR 0x8 +#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_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_SET 0x64 +#define STMP3XXX_RTC_PERSISTENT0_CLR 0x68 +#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; - unsigned irq_count; void __iomem *io; - int irq_alarm, irq_1msec; + int irq_alarm; }; static void stmp3xxx_wait_time(struct stmp3xxx_rtc_data *rtc_data) @@ -42,8 +63,8 @@ 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 (readl(rtc_data->io + STMP3XXX_RTC_STAT) & + (0x80 << STMP3XXX_RTC_STAT_STALE_SHIFT)) cpu_relax(); } @@ -53,7 +74,7 @@ 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(readl(rtc_data->io + STMP3XXX_RTC_SECONDS), rtc_tm); return 0; } @@ -61,7 +82,7 @@ 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); + writel(t, rtc_data->io + STMP3XXX_RTC_SECONDS); stmp3xxx_wait_time(rtc_data); return 0; } @@ -70,47 +91,34 @@ static int stmp3xxx_rtc_set_mmss(struct device *dev, unsigned long t) static irqreturn_t stmp3xxx_rtc_interrupt(int irq, void *dev_id) { struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(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); + u32 status = readl(rtc_data->io + STMP3XXX_RTC_CTRL); - if (status & BM_RTC_CTRL_ALARM_IRQ) { - stmp3xxx_clearl(BM_RTC_CTRL_ALARM_IRQ, - rtc_data->io + HW_RTC_CTRL); - events |= RTC_AF | RTC_IRQF; + if (status & STMP3XXX_RTC_CTRL_ALARM_IRQ) { + writel(STMP3XXX_RTC_CTRL_ALARM_IRQ, + rtc_data->io + STMP3XXX_RTC_CTRL_CLR); + rtc_update_irq(rtc_data->rtc, 1, RTC_AF | RTC_IRQF); + return IRQ_HANDLED; } - if (status & BM_RTC_CTRL_ONEMSEC_IRQ) { - stmp3xxx_clearl(BM_RTC_CTRL_ONEMSEC_IRQ, - rtc_data->io + HW_RTC_CTRL); - if (++rtc_data->irq_count % 1000 == 0) { - events |= RTC_UF | RTC_IRQF; - rtc_data->irq_count = 0; - } - } - - if (events) - rtc_update_irq(rtc_data->rtc, 1, events); - - return IRQ_HANDLED; + return IRQ_NONE; } 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; 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); + writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN | + STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN, + rtc_data->io + STMP3XXX_RTC_PERSISTENT0_SET); + writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, + rtc_data->io + STMP3XXX_RTC_CTRL_SET); } else { - stmp3xxx_clearl(BM_RTC_PERSISTENT0_ALARM_EN | - BM_RTC_PERSISTENT0_ALARM_WAKE_EN, p); - stmp3xxx_clearl(BM_RTC_CTRL_ALARM_IRQ_EN, ctl); + writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN | + STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN, + rtc_data->io + STMP3XXX_RTC_PERSISTENT0_CLR); + writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, + rtc_data->io + STMP3XXX_RTC_CTRL_CLR); } return 0; } @@ -119,7 +127,7 @@ 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(readl(rtc_data->io + STMP3XXX_RTC_ALARM), &alm->time); return 0; } @@ -129,7 +137,10 @@ 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); + writel(t, rtc_data->io + STMP3XXX_RTC_ALARM); + + stmp3xxx_alarm_irq_enable(dev, alm->enabled); + return 0; } @@ -149,11 +160,11 @@ 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); + writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, + rtc_data->io + STMP3XXX_RTC_CTRL_CLR); free_irq(rtc_data->irq_alarm, &pdev->dev); - free_irq(rtc_data->irq_1msec, &pdev->dev); rtc_device_unregister(rtc_data->rtc); + platform_set_drvdata(pdev, NULL); iounmap(rtc_data->io); kfree(rtc_data); @@ -185,20 +196,26 @@ 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 (!(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); + platform_set_drvdata(pdev, rtc_data); + + mxs_reset_block(rtc_data->io); + writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN | + STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN | + STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE, + rtc_data->io + STMP3XXX_RTC_PERSISTENT0_CLR); + + writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN | + STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, + rtc_data->io + STMP3XXX_RTC_CTRL_CLR); + rtc_data->rtc = rtc_device_register(pdev->name, &pdev->dev, &stmp3xxx_rtc_ops, THIS_MODULE); if (IS_ERR(rtc_data->rtc)) { @@ -206,33 +223,20 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev) goto out_remap; } - rtc_data->irq_count = 0; - err = request_irq(rtc_data->irq_alarm, stmp3xxx_rtc_interrupt, - IRQF_DISABLED, "RTC alarm", &pdev->dev); + err = request_irq(rtc_data->irq_alarm, stmp3xxx_rtc_interrupt, 0, + "RTC alarm", &pdev->dev); if (err) { dev_err(&pdev->dev, "Cannot claim IRQ%d\n", rtc_data->irq_alarm); goto out_irq_alarm; } - err = request_irq(rtc_data->irq_1msec, stmp3xxx_rtc_interrupt, - IRQF_DISABLED, "RTC tick", &pdev->dev); - if (err) { - dev_err(&pdev->dev, "Cannot claim IRQ%d\n", - rtc_data->irq_1msec); - goto out_irq1; - } - - platform_set_drvdata(pdev, rtc_data); return 0; -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); rtc_device_unregister(rtc_data->rtc); out_remap: + platform_set_drvdata(pdev, NULL); iounmap(rtc_data->io); out_free: kfree(rtc_data); @@ -249,11 +253,11 @@ 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); + mxs_reset_block(rtc_data->io); + writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN | + STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN | + STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE, + rtc_data->io + STMP3XXX_RTC_PERSISTENT0_CLR); return 0; } #else @@ -286,5 +290,6 @@ module_init(stmp3xxx_rtc_init); module_exit(stmp3xxx_rtc_exit); MODULE_DESCRIPTION("STMP3xxx RTC Driver"); -MODULE_AUTHOR("dmitry pervushin <dpervushin@embeddedalley.com>"); +MODULE_AUTHOR("dmitry pervushin <dpervushin@embeddedalley.com> and " + "Wolfram Sang <w.sang@pengutronix.de>"); MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c index efd6066..f93f412 100644 --- a/drivers/rtc/rtc-vt8500.c +++ b/drivers/rtc/rtc-vt8500.c @@ -74,6 +74,8 @@ #define VT8500_RTC_CR_SM_SEC (1 << 3) /* 0: 1Hz/60, 1: 1Hz */ #define VT8500_RTC_CR_CALIB (1 << 4) /* Enable calibration */ +#define VT8500_RTC_IS_ALARM (1 << 0) /* Alarm interrupt status */ + struct vt8500_rtc { void __iomem *regbase; struct resource *res; @@ -96,7 +98,7 @@ static irqreturn_t vt8500_rtc_irq(int irq, void *dev_id) spin_unlock(&vt8500_rtc->lock); - if (isr & 1) + if (isr & VT8500_RTC_IS_ALARM) events |= RTC_AF | RTC_IRQF; rtc_update_irq(vt8500_rtc->rtc, 1, events); @@ -161,8 +163,8 @@ static int vt8500_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) alrm->time.tm_sec = bcd2bin((alarm & TIME_SEC_MASK)); alrm->enabled = (alarm & ALARM_ENABLE_MASK) ? 1 : 0; + alrm->pending = (isr & VT8500_RTC_IS_ALARM) ? 1 : 0; - alrm->pending = (isr & 1) ? 1 : 0; return rtc_valid_tm(&alrm->time); } |