Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 1194 deletions

diff --git a/ANDROID_3.4.5/drivers/rtc/rtc-cmos.c b/ANDROID_3.4.5/drivers/rtc/rtc-cmos.c
deleted file mode 100644
index 7d5f56ed..00000000
--- a/ANDROID_3.4.5/drivers/rtc/rtc-cmos.c
+++ /dev/null
@@ -1,1194 +0,0 @@
-/*
- * RTC class driver for "CMOS RTC":  PCs, ACPI, etc
- *
- * Copyright (C) 1996 Paul Gortmaker (drivers/char/rtc.c)
- * Copyright (C) 2006 David Brownell (convert to new framework)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-/*
- * The original "cmos clock" chip was an MC146818 chip, now obsolete.
- * That defined the register interface now provided by all PCs, some
- * non-PC systems, and incorporated into ACPI.  Modern PC chipsets
- * integrate an MC146818 clone in their southbridge, and boards use
- * that instead of discrete clones like the DS12887 or M48T86.  There
- * are also clones that connect using the LPC bus.
- *
- * That register API is also used directly by various other drivers
- * (notably for integrated NVRAM), infrastructure (x86 has code to
- * bypass the RTC framework, directly reading the RTC during boot
- * and updating minutes/seconds for systems using NTP synch) and
- * utilities (like userspace 'hwclock', if no /dev node exists).
- *
- * So **ALL** calls to CMOS_READ and CMOS_WRITE must be done with
- * interrupts disabled, holding the global rtc_lock, to exclude those
- * other drivers and utilities on correctly configured systems.
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/platform_device.h>
-#include <linux/mod_devicetable.h>
-#include <linux/log2.h>
-#include <linux/pm.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-
-/* this is for "generic access to PC-style RTC" using CMOS_READ/CMOS_WRITE */
-#include <asm-generic/rtc.h>
-
-struct cmos_rtc {
-	struct rtc_device	*rtc;
-	struct device		*dev;
-	int			irq;
-	struct resource		*iomem;
-
-	void			(*wake_on)(struct device *);
-	void			(*wake_off)(struct device *);
-
-	u8			enabled_wake;
-	u8			suspend_ctrl;
-
-	/* newer hardware extends the original register set */
-	u8			day_alrm;
-	u8			mon_alrm;
-	u8			century;
-};
-
-/* both platform and pnp busses use negative numbers for invalid irqs */
-#define is_valid_irq(n)		((n) > 0)
-
-static const char driver_name[] = "rtc_cmos";
-
-/* The RTC_INTR register may have e.g. RTC_PF set even if RTC_PIE is clear;
- * always mask it against the irq enable bits in RTC_CONTROL.  Bit values
- * are the same: PF==PIE, AF=AIE, UF=UIE; so RTC_IRQMASK works with both.
- */
-#define	RTC_IRQMASK	(RTC_PF | RTC_AF | RTC_UF)
-
-static inline int is_intr(u8 rtc_intr)
-{
-	if (!(rtc_intr & RTC_IRQF))
-		return 0;
-	return rtc_intr & RTC_IRQMASK;
-}
-
-/*----------------------------------------------------------------*/
-
-/* Much modern x86 hardware has HPETs (10+ MHz timers) which, because
- * many BIOS programmers don't set up "sane mode" IRQ routing, are mostly
- * used in a broken "legacy replacement" mode.  The breakage includes
- * HPET #1 hijacking the IRQ for this RTC, and being unavailable for
- * other (better) use.
- *
- * When that broken mode is in use, platform glue provides a partial
- * emulation of hardware RTC IRQ facilities using HPET #1.  We don't
- * want to use HPET for anything except those IRQs though...
- */
-#ifdef CONFIG_HPET_EMULATE_RTC
-#include <asm/hpet.h>
-#else
-
-static inline int is_hpet_enabled(void)
-{
-	return 0;
-}
-
-static inline int hpet_mask_rtc_irq_bit(unsigned long mask)
-{
-	return 0;
-}
-
-static inline int hpet_set_rtc_irq_bit(unsigned long mask)
-{
-	return 0;
-}
-
-static inline int
-hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec)
-{
-	return 0;
-}
-
-static inline int hpet_set_periodic_freq(unsigned long freq)
-{
-	return 0;
-}
-
-static inline int hpet_rtc_dropped_irq(void)
-{
-	return 0;
-}
-
-static inline int hpet_rtc_timer_init(void)
-{
-	return 0;
-}
-
-extern irq_handler_t hpet_rtc_interrupt;
-
-static inline int hpet_register_irq_handler(irq_handler_t handler)
-{
-	return 0;
-}
-
-static inline int hpet_unregister_irq_handler(irq_handler_t handler)
-{
-	return 0;
-}
-
-#endif
-
-/*----------------------------------------------------------------*/
-
-#ifdef RTC_PORT
-
-/* Most newer x86 systems have two register banks, the first used
- * for RTC and NVRAM and the second only for NVRAM.  Caller must
- * own rtc_lock ... and we won't worry about access during NMI.
- */
-#define can_bank2	true
-
-static inline unsigned char cmos_read_bank2(unsigned char addr)
-{
-	outb(addr, RTC_PORT(2));
-	return inb(RTC_PORT(3));
-}
-
-static inline void cmos_write_bank2(unsigned char val, unsigned char addr)
-{
-	outb(addr, RTC_PORT(2));
-	outb(val, RTC_PORT(3));
-}
-
-#else
-
-#define can_bank2	false
-
-static inline unsigned char cmos_read_bank2(unsigned char addr)
-{
-	return 0;
-}
-
-static inline void cmos_write_bank2(unsigned char val, unsigned char addr)
-{
-}
-
-#endif
-
-/*----------------------------------------------------------------*/
-
-static int cmos_read_time(struct device *dev, struct rtc_time *t)
-{
-	/* REVISIT:  if the clock has a "century" register, use
-	 * that instead of the heuristic in get_rtc_time().
-	 * That'll make Y3K compatility (year > 2070) easy!
-	 */
-	get_rtc_time(t);
-	return 0;
-}
-
-static int cmos_set_time(struct device *dev, struct rtc_time *t)
-{
-	/* REVISIT:  set the "century" register if available
-	 *
-	 * NOTE: this ignores the issue whereby updating the seconds
-	 * takes effect exactly 500ms after we write the register.
-	 * (Also queueing and other delays before we get this far.)
-	 */
-	return set_rtc_time(t);
-}
-
-static int cmos_read_alarm(struct device *dev, struct rtc_wkalrm *t)
-{
-	struct cmos_rtc	*cmos = dev_get_drvdata(dev);
-	unsigned char	rtc_control;
-
-	if (!is_valid_irq(cmos->irq))
-		return -EIO;
-
-	/* Basic alarms only support hour, minute, and seconds fields.
-	 * Some also support day and month, for alarms up to a year in
-	 * the future.
-	 */
-	t->time.tm_mday = -1;
-	t->time.tm_mon = -1;
-
-	spin_lock_irq(&rtc_lock);
-	t->time.tm_sec = CMOS_READ(RTC_SECONDS_ALARM);
-	t->time.tm_min = CMOS_READ(RTC_MINUTES_ALARM);
-	t->time.tm_hour = CMOS_READ(RTC_HOURS_ALARM);
-
-	if (cmos->day_alrm) {
-		/* ignore upper bits on readback per ACPI spec */
-		t->time.tm_mday = CMOS_READ(cmos->day_alrm) & 0x3f;
-		if (!t->time.tm_mday)
-			t->time.tm_mday = -1;
-
-		if (cmos->mon_alrm) {
-			t->time.tm_mon = CMOS_READ(cmos->mon_alrm);
-			if (!t->time.tm_mon)
-				t->time.tm_mon = -1;
-		}
-	}
-
-	rtc_control = CMOS_READ(RTC_CONTROL);
-	spin_unlock_irq(&rtc_lock);
-
-	if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
-		if (((unsigned)t->time.tm_sec) < 0x60)
-			t->time.tm_sec = bcd2bin(t->time.tm_sec);
-		else
-			t->time.tm_sec = -1;
-		if (((unsigned)t->time.tm_min) < 0x60)
-			t->time.tm_min = bcd2bin(t->time.tm_min);
-		else
-			t->time.tm_min = -1;
-		if (((unsigned)t->time.tm_hour) < 0x24)
-			t->time.tm_hour = bcd2bin(t->time.tm_hour);
-		else
-			t->time.tm_hour = -1;
-
-		if (cmos->day_alrm) {
-			if (((unsigned)t->time.tm_mday) <= 0x31)
-				t->time.tm_mday = bcd2bin(t->time.tm_mday);
-			else
-				t->time.tm_mday = -1;
-
-			if (cmos->mon_alrm) {
-				if (((unsigned)t->time.tm_mon) <= 0x12)
-					t->time.tm_mon = bcd2bin(t->time.tm_mon)-1;
-				else
-					t->time.tm_mon = -1;
-			}
-		}
-	}
-	t->time.tm_year = -1;
-
-	t->enabled = !!(rtc_control & RTC_AIE);
-	t->pending = 0;
-
-	return 0;
-}
-
-static void cmos_checkintr(struct cmos_rtc *cmos, unsigned char rtc_control)
-{
-	unsigned char	rtc_intr;
-
-	/* NOTE after changing RTC_xIE bits we always read INTR_FLAGS;
-	 * allegedly some older rtcs need that to handle irqs properly
-	 */
-	rtc_intr = CMOS_READ(RTC_INTR_FLAGS);
-
-	if (is_hpet_enabled())
-		return;
-
-	rtc_intr &= (rtc_control & RTC_IRQMASK) | RTC_IRQF;
-	if (is_intr(rtc_intr))
-		rtc_update_irq(cmos->rtc, 1, rtc_intr);
-}
-
-static void cmos_irq_enable(struct cmos_rtc *cmos, unsigned char mask)
-{
-	unsigned char	rtc_control;
-
-	/* flush any pending IRQ status, notably for update irqs,
-	 * before we enable new IRQs
-	 */
-	rtc_control = CMOS_READ(RTC_CONTROL);
-	cmos_checkintr(cmos, rtc_control);
-
-	rtc_control |= mask;
-	CMOS_WRITE(rtc_control, RTC_CONTROL);
-	hpet_set_rtc_irq_bit(mask);
-
-	cmos_checkintr(cmos, rtc_control);
-}
-
-static void cmos_irq_disable(struct cmos_rtc *cmos, unsigned char mask)
-{
-	unsigned char	rtc_control;
-
-	rtc_control = CMOS_READ(RTC_CONTROL);
-	rtc_control &= ~mask;
-	CMOS_WRITE(rtc_control, RTC_CONTROL);
-	hpet_mask_rtc_irq_bit(mask);
-
-	cmos_checkintr(cmos, rtc_control);
-}
-
-static int cmos_set_alarm(struct device *dev, struct rtc_wkalrm *t)
-{
-	struct cmos_rtc	*cmos = dev_get_drvdata(dev);
-       unsigned char   mon, mday, hrs, min, sec, rtc_control;
-
-	if (!is_valid_irq(cmos->irq))
-		return -EIO;
-
-	mon = t->time.tm_mon + 1;
-	mday = t->time.tm_mday;
-	hrs = t->time.tm_hour;
-	min = t->time.tm_min;
-	sec = t->time.tm_sec;
-
-	rtc_control = CMOS_READ(RTC_CONTROL);
-	if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
-		/* Writing 0xff means "don't care" or "match all".  */
-		mon = (mon <= 12) ? bin2bcd(mon) : 0xff;
-		mday = (mday >= 1 && mday <= 31) ? bin2bcd(mday) : 0xff;
-		hrs = (hrs < 24) ? bin2bcd(hrs) : 0xff;
-		min = (min < 60) ? bin2bcd(min) : 0xff;
-		sec = (sec < 60) ? bin2bcd(sec) : 0xff;
-	}
-
-	spin_lock_irq(&rtc_lock);
-
-	/* next rtc irq must not be from previous alarm setting */
-	cmos_irq_disable(cmos, RTC_AIE);
-
-	/* update alarm */
-	CMOS_WRITE(hrs, RTC_HOURS_ALARM);
-	CMOS_WRITE(min, RTC_MINUTES_ALARM);
-	CMOS_WRITE(sec, RTC_SECONDS_ALARM);
-
-	/* the system may support an "enhanced" alarm */
-	if (cmos->day_alrm) {
-		CMOS_WRITE(mday, cmos->day_alrm);
-		if (cmos->mon_alrm)
-			CMOS_WRITE(mon, cmos->mon_alrm);
-	}
-
-	/* FIXME the HPET alarm glue currently ignores day_alrm
-	 * and mon_alrm ...
-	 */
-	hpet_set_alarm_time(t->time.tm_hour, t->time.tm_min, t->time.tm_sec);
-
-	if (t->enabled)
-		cmos_irq_enable(cmos, RTC_AIE);
-
-	spin_unlock_irq(&rtc_lock);
-
-	return 0;
-}
-
-static int cmos_alarm_irq_enable(struct device *dev, unsigned int enabled)
-{
-	struct cmos_rtc	*cmos = dev_get_drvdata(dev);
-	unsigned long	flags;
-
-	if (!is_valid_irq(cmos->irq))
-		return -EINVAL;
-
-	spin_lock_irqsave(&rtc_lock, flags);
-
-	if (enabled)
-		cmos_irq_enable(cmos, RTC_AIE);
-	else
-		cmos_irq_disable(cmos, RTC_AIE);
-
-	spin_unlock_irqrestore(&rtc_lock, flags);
-	return 0;
-}
-
-#if defined(CONFIG_RTC_INTF_PROC) || defined(CONFIG_RTC_INTF_PROC_MODULE)
-
-static int cmos_procfs(struct device *dev, struct seq_file *seq)
-{
-	struct cmos_rtc	*cmos = dev_get_drvdata(dev);
-	unsigned char	rtc_control, valid;
-
-	spin_lock_irq(&rtc_lock);
-	rtc_control = CMOS_READ(RTC_CONTROL);
-	valid = CMOS_READ(RTC_VALID);
-	spin_unlock_irq(&rtc_lock);
-
-	/* NOTE:  at least ICH6 reports battery status using a different
-	 * (non-RTC) bit; and SQWE is ignored on many current systems.
-	 */
-	return seq_printf(seq,
-			"periodic_IRQ\t: %s\n"
-			"update_IRQ\t: %s\n"
-			"HPET_emulated\t: %s\n"
-			// "square_wave\t: %s\n"
-			"BCD\t\t: %s\n"
-			"DST_enable\t: %s\n"
-			"periodic_freq\t: %d\n"
-			"batt_status\t: %s\n",
-			(rtc_control & RTC_PIE) ? "yes" : "no",
-			(rtc_control & RTC_UIE) ? "yes" : "no",
-			is_hpet_enabled() ? "yes" : "no",
-			// (rtc_control & RTC_SQWE) ? "yes" : "no",
-			(rtc_control & RTC_DM_BINARY) ? "no" : "yes",
-			(rtc_control & RTC_DST_EN) ? "yes" : "no",
-			cmos->rtc->irq_freq,
-			(valid & RTC_VRT) ? "okay" : "dead");
-}
-
-#else
-#define	cmos_procfs	NULL
-#endif
-
-static const struct rtc_class_ops cmos_rtc_ops = {
-	.read_time		= cmos_read_time,
-	.set_time		= cmos_set_time,
-	.read_alarm		= cmos_read_alarm,
-	.set_alarm		= cmos_set_alarm,
-	.proc			= cmos_procfs,
-	.alarm_irq_enable	= cmos_alarm_irq_enable,
-};
-
-/*----------------------------------------------------------------*/
-
-/*
- * All these chips have at least 64 bytes of address space, shared by
- * RTC registers and NVRAM.  Most of those bytes of NVRAM are used
- * by boot firmware.  Modern chips have 128 or 256 bytes.
- */
-
-#define NVRAM_OFFSET	(RTC_REG_D + 1)
-
-static ssize_t
-cmos_nvram_read(struct file *filp, struct kobject *kobj,
-		struct bin_attribute *attr,
-		char *buf, loff_t off, size_t count)
-{
-	int	retval;
-
-	if (unlikely(off >= attr->size))
-		return 0;
-	if (unlikely(off < 0))
-		return -EINVAL;
-	if ((off + count) > attr->size)
-		count = attr->size - off;
-
-	off += NVRAM_OFFSET;
-	spin_lock_irq(&rtc_lock);
-	for (retval = 0; count; count--, off++, retval++) {
-		if (off < 128)
-			*buf++ = CMOS_READ(off);
-		else if (can_bank2)
-			*buf++ = cmos_read_bank2(off);
-		else
-			break;
-	}
-	spin_unlock_irq(&rtc_lock);
-
-	return retval;
-}
-
-static ssize_t
-cmos_nvram_write(struct file *filp, struct kobject *kobj,
-		struct bin_attribute *attr,
-		char *buf, loff_t off, size_t count)
-{
-	struct cmos_rtc	*cmos;
-	int		retval;
-
-	cmos = dev_get_drvdata(container_of(kobj, struct device, kobj));
-	if (unlikely(off >= attr->size))
-		return -EFBIG;
-	if (unlikely(off < 0))
-		return -EINVAL;
-	if ((off + count) > attr->size)
-		count = attr->size - off;
-
-	/* NOTE:  on at least PCs and Ataris, the boot firmware uses a
-	 * checksum on part of the NVRAM data.  That's currently ignored
-	 * here.  If userspace is smart enough to know what fields of
-	 * NVRAM to update, updating checksums is also part of its job.
-	 */
-	off += NVRAM_OFFSET;
-	spin_lock_irq(&rtc_lock);
-	for (retval = 0; count; count--, off++, retval++) {
-		/* don't trash RTC registers */
-		if (off == cmos->day_alrm
-				|| off == cmos->mon_alrm
-				|| off == cmos->century)
-			buf++;
-		else if (off < 128)
-			CMOS_WRITE(*buf++, off);
-		else if (can_bank2)
-			cmos_write_bank2(*buf++, off);
-		else
-			break;
-	}
-	spin_unlock_irq(&rtc_lock);
-
-	return retval;
-}
-
-static struct bin_attribute nvram = {
-	.attr = {
-		.name	= "nvram",
-		.mode	= S_IRUGO | S_IWUSR,
-	},
-
-	.read	= cmos_nvram_read,
-	.write	= cmos_nvram_write,
-	/* size gets set up later */
-};
-
-/*----------------------------------------------------------------*/
-
-static struct cmos_rtc	cmos_rtc;
-
-static irqreturn_t cmos_interrupt(int irq, void *p)
-{
-	u8		irqstat;
-	u8		rtc_control;
-
-	spin_lock(&rtc_lock);
-
-	/* When the HPET interrupt handler calls us, the interrupt
-	 * status is passed as arg1 instead of the irq number.  But
-	 * always clear irq status, even when HPET is in the way.
-	 *
-	 * Note that HPET and RTC are almost certainly out of phase,
-	 * giving different IRQ status ...
-	 */
-	irqstat = CMOS_READ(RTC_INTR_FLAGS);
-	rtc_control = CMOS_READ(RTC_CONTROL);
-	if (is_hpet_enabled())
-		irqstat = (unsigned long)irq & 0xF0;
-	irqstat &= (rtc_control & RTC_IRQMASK) | RTC_IRQF;
-
-	/* All Linux RTC alarms should be treated as if they were oneshot.
-	 * Similar code may be needed in system wakeup paths, in case the
-	 * alarm woke the system.
-	 */
-	if (irqstat & RTC_AIE) {
-		rtc_control &= ~RTC_AIE;
-		CMOS_WRITE(rtc_control, RTC_CONTROL);
-		hpet_mask_rtc_irq_bit(RTC_AIE);
-
-		CMOS_READ(RTC_INTR_FLAGS);
-	}
-	spin_unlock(&rtc_lock);
-
-	if (is_intr(irqstat)) {
-		rtc_update_irq(p, 1, irqstat);
-		return IRQ_HANDLED;
-	} else
-		return IRQ_NONE;
-}
-
-#ifdef	CONFIG_PNP
-#define	INITSECTION
-
-#else
-#define	INITSECTION	__init
-#endif
-
-static int INITSECTION
-cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
-{
-	struct cmos_rtc_board_info	*info = dev->platform_data;
-	int				retval = 0;
-	unsigned char			rtc_control;
-	unsigned			address_space;
-
-	/* there can be only one ... */
-	if (cmos_rtc.dev)
-		return -EBUSY;
-
-	if (!ports)
-		return -ENODEV;
-
-	/* Claim I/O ports ASAP, minimizing conflict with legacy driver.
-	 *
-	 * REVISIT non-x86 systems may instead use memory space resources
-	 * (needing ioremap etc), not i/o space resources like this ...
-	 */
-	ports = request_region(ports->start,
-			resource_size(ports),
-			driver_name);
-	if (!ports) {
-		dev_dbg(dev, "i/o registers already in use\n");
-		return -EBUSY;
-	}
-
-	cmos_rtc.irq = rtc_irq;
-	cmos_rtc.iomem = ports;
-
-	/* Heuristic to deduce NVRAM size ... do what the legacy NVRAM
-	 * driver did, but don't reject unknown configs.   Old hardware
-	 * won't address 128 bytes.  Newer chips have multiple banks,
-	 * though they may not be listed in one I/O resource.
-	 */
-#if	defined(CONFIG_ATARI)
-	address_space = 64;
-#elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) \
-			|| defined(__sparc__) || defined(__mips__) \
-			|| defined(__powerpc__)
-	address_space = 128;
-#else
-#warning Assuming 128 bytes of RTC+NVRAM address space, not 64 bytes.
-	address_space = 128;
-#endif
-	if (can_bank2 && ports->end > (ports->start + 1))
-		address_space = 256;
-
-	/* For ACPI systems extension info comes from the FADT.  On others,
-	 * board specific setup provides it as appropriate.  Systems where
-	 * the alarm IRQ isn't automatically a wakeup IRQ (like ACPI, and
-	 * some almost-clones) can provide hooks to make that behave.
-	 *
-	 * Note that ACPI doesn't preclude putting these registers into
-	 * "extended" areas of the chip, including some that we won't yet
-	 * expect CMOS_READ and friends to handle.
-	 */
-	if (info) {
-		if (info->rtc_day_alarm && info->rtc_day_alarm < 128)
-			cmos_rtc.day_alrm = info->rtc_day_alarm;
-		if (info->rtc_mon_alarm && info->rtc_mon_alarm < 128)
-			cmos_rtc.mon_alrm = info->rtc_mon_alarm;
-		if (info->rtc_century && info->rtc_century < 128)
-			cmos_rtc.century = info->rtc_century;
-
-		if (info->wake_on && info->wake_off) {
-			cmos_rtc.wake_on = info->wake_on;
-			cmos_rtc.wake_off = info->wake_off;
-		}
-	}
-
-	cmos_rtc.dev = dev;
-	dev_set_drvdata(dev, &cmos_rtc);
-
-	cmos_rtc.rtc = rtc_device_register(driver_name, dev,
-				&cmos_rtc_ops, THIS_MODULE);
-	if (IS_ERR(cmos_rtc.rtc)) {
-		retval = PTR_ERR(cmos_rtc.rtc);
-		goto cleanup0;
-	}
-
-	rename_region(ports, dev_name(&cmos_rtc.rtc->dev));
-
-	spin_lock_irq(&rtc_lock);
-
-	/* force periodic irq to CMOS reset default of 1024Hz;
-	 *
-	 * REVISIT it's been reported that at least one x86_64 ALI mobo
-	 * doesn't use 32KHz here ... for portability we might need to
-	 * do something about other clock frequencies.
-	 */
-	cmos_rtc.rtc->irq_freq = 1024;
-	hpet_set_periodic_freq(cmos_rtc.rtc->irq_freq);
-	CMOS_WRITE(RTC_REF_CLCK_32KHZ | 0x06, RTC_FREQ_SELECT);
-
-	/* disable irqs */
-	cmos_irq_disable(&cmos_rtc, RTC_PIE | RTC_AIE | RTC_UIE);
-
-	rtc_control = CMOS_READ(RTC_CONTROL);
-
-	spin_unlock_irq(&rtc_lock);
-
-	/* FIXME:
-	 * <asm-generic/rtc.h> doesn't know 12-hour mode either.
-	 */
-       if (is_valid_irq(rtc_irq) && !(rtc_control & RTC_24H)) {
-		dev_warn(dev, "only 24-hr supported\n");
-		retval = -ENXIO;
-		goto cleanup1;
-	}
-
-	if (is_valid_irq(rtc_irq)) {
-		irq_handler_t rtc_cmos_int_handler;
-
-		if (is_hpet_enabled()) {
-			int err;
-
-			rtc_cmos_int_handler = hpet_rtc_interrupt;
-			err = hpet_register_irq_handler(cmos_interrupt);
-			if (err != 0) {
-				printk(KERN_WARNING "hpet_register_irq_handler "
-						" failed in rtc_init().");
-				goto cleanup1;
-			}
-		} else
-			rtc_cmos_int_handler = cmos_interrupt;
-
-		retval = request_irq(rtc_irq, rtc_cmos_int_handler,
-				0, dev_name(&cmos_rtc.rtc->dev),
-				cmos_rtc.rtc);
-		if (retval < 0) {
-			dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq);
-			goto cleanup1;
-		}
-	}
-	hpet_rtc_timer_init();
-
-	/* export at least the first block of NVRAM */
-	nvram.size = address_space - NVRAM_OFFSET;
-	retval = sysfs_create_bin_file(&dev->kobj, &nvram);
-	if (retval < 0) {
-		dev_dbg(dev, "can't create nvram file? %d\n", retval);
-		goto cleanup2;
-	}
-
-	pr_info("%s: %s%s, %zd bytes nvram%s\n",
-		dev_name(&cmos_rtc.rtc->dev),
-		!is_valid_irq(rtc_irq) ? "no alarms" :
-			cmos_rtc.mon_alrm ? "alarms up to one year" :
-			cmos_rtc.day_alrm ? "alarms up to one month" :
-			"alarms up to one day",
-		cmos_rtc.century ? ", y3k" : "",
-		nvram.size,
-		is_hpet_enabled() ? ", hpet irqs" : "");
-
-	return 0;
-
-cleanup2:
-	if (is_valid_irq(rtc_irq))
-		free_irq(rtc_irq, cmos_rtc.rtc);
-cleanup1:
-	cmos_rtc.dev = NULL;
-	rtc_device_unregister(cmos_rtc.rtc);
-cleanup0:
-	release_region(ports->start, resource_size(ports));
-	return retval;
-}
-
-static void cmos_do_shutdown(void)
-{
-	spin_lock_irq(&rtc_lock);
-	cmos_irq_disable(&cmos_rtc, RTC_IRQMASK);
-	spin_unlock_irq(&rtc_lock);
-}
-
-static void __exit cmos_do_remove(struct device *dev)
-{
-	struct cmos_rtc	*cmos = dev_get_drvdata(dev);
-	struct resource *ports;
-
-	cmos_do_shutdown();
-
-	sysfs_remove_bin_file(&dev->kobj, &nvram);
-
-	if (is_valid_irq(cmos->irq)) {
-		free_irq(cmos->irq, cmos->rtc);
-		hpet_unregister_irq_handler(cmos_interrupt);
-	}
-
-	rtc_device_unregister(cmos->rtc);
-	cmos->rtc = NULL;
-
-	ports = cmos->iomem;
-	release_region(ports->start, resource_size(ports));
-	cmos->iomem = NULL;
-
-	cmos->dev = NULL;
-	dev_set_drvdata(dev, NULL);
-}
-
-#ifdef	CONFIG_PM
-
-static int cmos_suspend(struct device *dev)
-{
-	struct cmos_rtc	*cmos = dev_get_drvdata(dev);
-	unsigned char	tmp;
-
-	/* only the alarm might be a wakeup event source */
-	spin_lock_irq(&rtc_lock);
-	cmos->suspend_ctrl = tmp = CMOS_READ(RTC_CONTROL);
-	if (tmp & (RTC_PIE|RTC_AIE|RTC_UIE)) {
-		unsigned char	mask;
-
-		if (device_may_wakeup(dev))
-			mask = RTC_IRQMASK & ~RTC_AIE;
-		else
-			mask = RTC_IRQMASK;
-		tmp &= ~mask;
-		CMOS_WRITE(tmp, RTC_CONTROL);
-
-		/* shut down hpet emulation - we don't need it for alarm */
-		hpet_mask_rtc_irq_bit(RTC_PIE|RTC_AIE|RTC_UIE);
-		cmos_checkintr(cmos, tmp);
-	}
-	spin_unlock_irq(&rtc_lock);
-
-	if (tmp & RTC_AIE) {
-		cmos->enabled_wake = 1;
-		if (cmos->wake_on)
-			cmos->wake_on(dev);
-		else
-			enable_irq_wake(cmos->irq);
-	}
-
-	pr_debug("%s: suspend%s, ctrl %02x\n",
-			dev_name(&cmos_rtc.rtc->dev),
-			(tmp & RTC_AIE) ? ", alarm may wake" : "",
-			tmp);
-
-	return 0;
-}
-
-/* We want RTC alarms to wake us from e.g. ACPI G2/S5 "soft off", even
- * after a detour through G3 "mechanical off", although the ACPI spec
- * says wakeup should only work from G1/S4 "hibernate".  To most users,
- * distinctions between S4 and S5 are pointless.  So when the hardware
- * allows, don't draw that distinction.
- */
-static inline int cmos_poweroff(struct device *dev)
-{
-	return cmos_suspend(dev);
-}
-
-static int cmos_resume(struct device *dev)
-{
-	struct cmos_rtc	*cmos = dev_get_drvdata(dev);
-	unsigned char	tmp = cmos->suspend_ctrl;
-
-	/* re-enable any irqs previously active */
-	if (tmp & RTC_IRQMASK) {
-		unsigned char	mask;
-
-		if (cmos->enabled_wake) {
-			if (cmos->wake_off)
-				cmos->wake_off(dev);
-			else
-				disable_irq_wake(cmos->irq);
-			cmos->enabled_wake = 0;
-		}
-
-		spin_lock_irq(&rtc_lock);
-		do {
-			CMOS_WRITE(tmp, RTC_CONTROL);
-			hpet_set_rtc_irq_bit(tmp & RTC_IRQMASK);
-
-			mask = CMOS_READ(RTC_INTR_FLAGS);
-			mask &= (tmp & RTC_IRQMASK) | RTC_IRQF;
-			if (!is_hpet_enabled() || !is_intr(mask))
-				break;
-
-			/* force one-shot behavior if HPET blocked
-			 * the wake alarm's irq
-			 */
-			rtc_update_irq(cmos->rtc, 1, mask);
-			tmp &= ~RTC_AIE;
-			hpet_mask_rtc_irq_bit(RTC_AIE);
-		} while (mask & RTC_AIE);
-		spin_unlock_irq(&rtc_lock);
-	}
-
-	pr_debug("%s: resume, ctrl %02x\n",
-			dev_name(&cmos_rtc.rtc->dev),
-			tmp);
-
-	return 0;
-}
-
-static SIMPLE_DEV_PM_OPS(cmos_pm_ops, cmos_suspend, cmos_resume);
-
-#else
-
-static inline int cmos_poweroff(struct device *dev)
-{
-	return -ENOSYS;
-}
-
-#endif
-
-/*----------------------------------------------------------------*/
-
-/* On non-x86 systems, a "CMOS" RTC lives most naturally on platform_bus.
- * ACPI systems always list these as PNPACPI devices, and pre-ACPI PCs
- * probably list them in similar PNPBIOS tables; so PNP is more common.
- *
- * We don't use legacy "poke at the hardware" probing.  Ancient PCs that
- * predate even PNPBIOS should set up platform_bus devices.
- */
-
-#ifdef	CONFIG_ACPI
-
-#include <linux/acpi.h>
-
-static u32 rtc_handler(void *context)
-{
-	acpi_clear_event(ACPI_EVENT_RTC);
-	acpi_disable_event(ACPI_EVENT_RTC, 0);
-	return ACPI_INTERRUPT_HANDLED;
-}
-
-static inline void rtc_wake_setup(void)
-{
-	acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL);
-	/*
-	 * After the RTC handler is installed, the Fixed_RTC event should
-	 * be disabled. Only when the RTC alarm is set will it be enabled.
-	 */
-	acpi_clear_event(ACPI_EVENT_RTC);
-	acpi_disable_event(ACPI_EVENT_RTC, 0);
-}
-
-static void rtc_wake_on(struct device *dev)
-{
-	acpi_clear_event(ACPI_EVENT_RTC);
-	acpi_enable_event(ACPI_EVENT_RTC, 0);
-}
-
-static void rtc_wake_off(struct device *dev)
-{
-	acpi_disable_event(ACPI_EVENT_RTC, 0);
-}
-
-/* Every ACPI platform has a mc146818 compatible "cmos rtc".  Here we find
- * its device node and pass extra config data.  This helps its driver use
- * capabilities that the now-obsolete mc146818 didn't have, and informs it
- * that this board's RTC is wakeup-capable (per ACPI spec).
- */
-static struct cmos_rtc_board_info acpi_rtc_info;
-
-static void __devinit
-cmos_wake_setup(struct device *dev)
-{
-	if (acpi_disabled)
-		return;
-
-	rtc_wake_setup();
-	acpi_rtc_info.wake_on = rtc_wake_on;
-	acpi_rtc_info.wake_off = rtc_wake_off;
-
-	/* workaround bug in some ACPI tables */
-	if (acpi_gbl_FADT.month_alarm && !acpi_gbl_FADT.day_alarm) {
-		dev_dbg(dev, "bogus FADT month_alarm (%d)\n",
-			acpi_gbl_FADT.month_alarm);
-		acpi_gbl_FADT.month_alarm = 0;
-	}
-
-	acpi_rtc_info.rtc_day_alarm = acpi_gbl_FADT.day_alarm;
-	acpi_rtc_info.rtc_mon_alarm = acpi_gbl_FADT.month_alarm;
-	acpi_rtc_info.rtc_century = acpi_gbl_FADT.century;
-
-	/* NOTE:  S4_RTC_WAKE is NOT currently useful to Linux */
-	if (acpi_gbl_FADT.flags & ACPI_FADT_S4_RTC_WAKE)
-		dev_info(dev, "RTC can wake from S4\n");
-
-	dev->platform_data = &acpi_rtc_info;
-
-	/* RTC always wakes from S1/S2/S3, and often S4/STD */
-	device_init_wakeup(dev, 1);
-}
-
-#else
-
-static void __devinit
-cmos_wake_setup(struct device *dev)
-{
-}
-
-#endif
-
-#ifdef	CONFIG_PNP
-
-#include <linux/pnp.h>
-
-static int __devinit
-cmos_pnp_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
-{
-	cmos_wake_setup(&pnp->dev);
-
-	if (pnp_port_start(pnp,0) == 0x70 && !pnp_irq_valid(pnp,0))
-		/* Some machines contain a PNP entry for the RTC, but
-		 * don't define the IRQ. It should always be safe to
-		 * hardcode it in these cases
-		 */
-		return cmos_do_probe(&pnp->dev,
-				pnp_get_resource(pnp, IORESOURCE_IO, 0), 8);
-	else
-		return cmos_do_probe(&pnp->dev,
-				pnp_get_resource(pnp, IORESOURCE_IO, 0),
-				pnp_irq(pnp, 0));
-}
-
-static void __exit cmos_pnp_remove(struct pnp_dev *pnp)
-{
-	cmos_do_remove(&pnp->dev);
-}
-
-#ifdef	CONFIG_PM
-
-static int cmos_pnp_suspend(struct pnp_dev *pnp, pm_message_t mesg)
-{
-	return cmos_suspend(&pnp->dev);
-}
-
-static int cmos_pnp_resume(struct pnp_dev *pnp)
-{
-	return cmos_resume(&pnp->dev);
-}
-
-#else
-#define	cmos_pnp_suspend	NULL
-#define	cmos_pnp_resume		NULL
-#endif
-
-static void cmos_pnp_shutdown(struct pnp_dev *pnp)
-{
-	if (system_state == SYSTEM_POWER_OFF && !cmos_poweroff(&pnp->dev))
-		return;
-
-	cmos_do_shutdown();
-}
-
-static const struct pnp_device_id rtc_ids[] = {
-	{ .id = "PNP0b00", },
-	{ .id = "PNP0b01", },
-	{ .id = "PNP0b02", },
-	{ },
-};
-MODULE_DEVICE_TABLE(pnp, rtc_ids);
-
-static struct pnp_driver cmos_pnp_driver = {
-	.name		= (char *) driver_name,
-	.id_table	= rtc_ids,
-	.probe		= cmos_pnp_probe,
-	.remove		= __exit_p(cmos_pnp_remove),
-	.shutdown	= cmos_pnp_shutdown,
-
-	/* flag ensures resume() gets called, and stops syslog spam */
-	.flags		= PNP_DRIVER_RES_DO_NOT_CHANGE,
-	.suspend	= cmos_pnp_suspend,
-	.resume		= cmos_pnp_resume,
-};
-
-#endif	/* CONFIG_PNP */
-
-#ifdef CONFIG_OF
-static const struct of_device_id of_cmos_match[] = {
-	{
-		.compatible = "motorola,mc146818",
-	},
-	{ },
-};
-MODULE_DEVICE_TABLE(of, of_cmos_match);
-
-static __init void cmos_of_init(struct platform_device *pdev)
-{
-	struct device_node *node = pdev->dev.of_node;
-	struct rtc_time time;
-	int ret;
-	const __be32 *val;
-
-	if (!node)
-		return;
-
-	val = of_get_property(node, "ctrl-reg", NULL);
-	if (val)
-		CMOS_WRITE(be32_to_cpup(val), RTC_CONTROL);
-
-	val = of_get_property(node, "freq-reg", NULL);
-	if (val)
-		CMOS_WRITE(be32_to_cpup(val), RTC_FREQ_SELECT);
-
-	get_rtc_time(&time);
-	ret = rtc_valid_tm(&time);
-	if (ret) {
-		struct rtc_time def_time = {
-			.tm_year = 1,
-			.tm_mday = 1,
-		};
-		set_rtc_time(&def_time);
-	}
-}
-#else
-static inline void cmos_of_init(struct platform_device *pdev) {}
-#define of_cmos_match NULL
-#endif
-/*----------------------------------------------------------------*/
-
-/* Platform setup should have set up an RTC device, when PNP is
- * unavailable ... this could happen even on (older) PCs.
- */
-
-static int __init cmos_platform_probe(struct platform_device *pdev)
-{
-	cmos_of_init(pdev);
-	cmos_wake_setup(&pdev->dev);
-	return cmos_do_probe(&pdev->dev,
-			platform_get_resource(pdev, IORESOURCE_IO, 0),
-			platform_get_irq(pdev, 0));
-}
-
-static int __exit cmos_platform_remove(struct platform_device *pdev)
-{
-	cmos_do_remove(&pdev->dev);
-	return 0;
-}
-
-static void cmos_platform_shutdown(struct platform_device *pdev)
-{
-	if (system_state == SYSTEM_POWER_OFF && !cmos_poweroff(&pdev->dev))
-		return;
-
-	cmos_do_shutdown();
-}
-
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:rtc_cmos");
-
-static struct platform_driver cmos_platform_driver = {
-	.remove		= __exit_p(cmos_platform_remove),
-	.shutdown	= cmos_platform_shutdown,
-	.driver = {
-		.name		= (char *) driver_name,
-#ifdef CONFIG_PM
-		.pm		= &cmos_pm_ops,
-#endif
-		.of_match_table = of_cmos_match,
-	}
-};
-
-#ifdef CONFIG_PNP
-static bool pnp_driver_registered;
-#endif
-static bool platform_driver_registered;
-
-static int __init cmos_init(void)
-{
-	int retval = 0;
-
-#ifdef	CONFIG_PNP
-	retval = pnp_register_driver(&cmos_pnp_driver);
-	if (retval == 0)
-		pnp_driver_registered = true;
-#endif
-
-	if (!cmos_rtc.dev) {
-		retval = platform_driver_probe(&cmos_platform_driver,
-					       cmos_platform_probe);
-		if (retval == 0)
-			platform_driver_registered = true;
-	}
-
-	if (retval == 0)
-		return 0;
-
-#ifdef	CONFIG_PNP
-	if (pnp_driver_registered)
-		pnp_unregister_driver(&cmos_pnp_driver);
-#endif
-	return retval;
-}
-module_init(cmos_init);
-
-static void __exit cmos_exit(void)
-{
-#ifdef	CONFIG_PNP
-	if (pnp_driver_registered)
-		pnp_unregister_driver(&cmos_pnp_driver);
-#endif
-	if (platform_driver_registered)
-		platform_driver_unregister(&cmos_platform_driver);
-}
-module_exit(cmos_exit);
-
-
-MODULE_AUTHOR("David Brownell");
-MODULE_DESCRIPTION("Driver for PC-style 'CMOS' RTCs");
-MODULE_LICENSE("GPL");