Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 733 insertions, 0 deletions

diff --git a/kernel/drivers/input/misc/hp_sdc_rtc.c b/kernel/drivers/input/misc/hp_sdc_rtc.c
new file mode 100644
index 000000000..45e0e3e55
--- /dev/null
+++ b/kernel/drivers/input/misc/hp_sdc_rtc.c
@@ -0,0 +1,733 @@
+/*
+ * HP i8042 SDC + MSM-58321 BBRTC driver.
+ *
+ * Copyright (c) 2001 Brian S. Julin
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ *
+ * References:
+ * System Device Controller Microprocessor Firmware Theory of Operation
+ *      for Part Number 1820-4784 Revision B.  Dwg No. A-1820-4784-2
+ * efirtc.c by Stephane Eranian/Hewlett Packard
+ *
+ */
+
+#include <linux/hp_sdc.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/time.h>
+#include <linux/miscdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/poll.h>
+#include <linux/rtc.h>
+#include <linux/mutex.h>
+#include <linux/semaphore.h>
+
+MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
+MODULE_DESCRIPTION("HP i8042 SDC + MSM-58321 RTC Driver");
+MODULE_LICENSE("Dual BSD/GPL");
+
+#define RTC_VERSION "1.10d"
+
+static DEFINE_MUTEX(hp_sdc_rtc_mutex);
+static unsigned long epoch = 2000;
+
+static struct semaphore i8042tregs;
+
+static hp_sdc_irqhook hp_sdc_rtc_isr;
+
+static struct fasync_struct *hp_sdc_rtc_async_queue;
+
+static DECLARE_WAIT_QUEUE_HEAD(hp_sdc_rtc_wait);
+
+static ssize_t hp_sdc_rtc_read(struct file *file, char __user *buf,
+			       size_t count, loff_t *ppos);
+
+static long hp_sdc_rtc_unlocked_ioctl(struct file *file,
+				      unsigned int cmd, unsigned long arg);
+
+static unsigned int hp_sdc_rtc_poll(struct file *file, poll_table *wait);
+
+static int hp_sdc_rtc_open(struct inode *inode, struct file *file);
+static int hp_sdc_rtc_fasync (int fd, struct file *filp, int on);
+
+static void hp_sdc_rtc_isr (int irq, void *dev_id, 
+			    uint8_t status, uint8_t data) 
+{
+	return;
+}
+
+static int hp_sdc_rtc_do_read_bbrtc (struct rtc_time *rtctm)
+{
+	struct semaphore tsem;
+	hp_sdc_transaction t;
+	uint8_t tseq[91];
+	int i;
+	
+	i = 0;
+	while (i < 91) {
+		tseq[i++] = HP_SDC_ACT_DATAREG |
+			HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN;
+		tseq[i++] = 0x01;			/* write i8042[0x70] */
+	  	tseq[i]   = i / 7;			/* BBRTC reg address */
+		i++;
+		tseq[i++] = HP_SDC_CMD_DO_RTCR;		/* Trigger command   */
+		tseq[i++] = 2;		/* expect 1 stat/dat pair back.   */
+		i++; i++;               /* buffer for stat/dat pair       */
+	}
+	tseq[84] |= HP_SDC_ACT_SEMAPHORE;
+	t.endidx =		91;
+	t.seq =			tseq;
+	t.act.semaphore =	&tsem;
+	sema_init(&tsem, 0);
+	
+	if (hp_sdc_enqueue_transaction(&t)) return -1;
+	
+	/* Put ourselves to sleep for results. */
+	if (WARN_ON(down_interruptible(&tsem)))
+		return -1;
+	
+	/* Check for nonpresence of BBRTC */
+	if (!((tseq[83] | tseq[90] | tseq[69] | tseq[76] |
+	       tseq[55] | tseq[62] | tseq[34] | tseq[41] |
+	       tseq[20] | tseq[27] | tseq[6]  | tseq[13]) & 0x0f))
+		return -1;
+
+	memset(rtctm, 0, sizeof(struct rtc_time));
+	rtctm->tm_year = (tseq[83] & 0x0f) + (tseq[90] & 0x0f) * 10;
+	rtctm->tm_mon  = (tseq[69] & 0x0f) + (tseq[76] & 0x0f) * 10;
+	rtctm->tm_mday = (tseq[55] & 0x0f) + (tseq[62] & 0x0f) * 10;
+	rtctm->tm_wday = (tseq[48] & 0x0f);
+	rtctm->tm_hour = (tseq[34] & 0x0f) + (tseq[41] & 0x0f) * 10;
+	rtctm->tm_min  = (tseq[20] & 0x0f) + (tseq[27] & 0x0f) * 10;
+	rtctm->tm_sec  = (tseq[6]  & 0x0f) + (tseq[13] & 0x0f) * 10;
+	
+	return 0;
+}
+
+static int hp_sdc_rtc_read_bbrtc (struct rtc_time *rtctm)
+{
+	struct rtc_time tm, tm_last;
+	int i = 0;
+
+	/* MSM-58321 has no read latch, so must read twice and compare. */
+
+	if (hp_sdc_rtc_do_read_bbrtc(&tm_last)) return -1;
+	if (hp_sdc_rtc_do_read_bbrtc(&tm)) return -1;
+
+	while (memcmp(&tm, &tm_last, sizeof(struct rtc_time))) {
+		if (i++ > 4) return -1;
+		memcpy(&tm_last, &tm, sizeof(struct rtc_time));
+		if (hp_sdc_rtc_do_read_bbrtc(&tm)) return -1;
+	}
+
+	memcpy(rtctm, &tm, sizeof(struct rtc_time));
+
+	return 0;
+}
+
+
+static int64_t hp_sdc_rtc_read_i8042timer (uint8_t loadcmd, int numreg)
+{
+	hp_sdc_transaction t;
+	uint8_t tseq[26] = {
+		HP_SDC_ACT_PRECMD | HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN,
+		0,
+		HP_SDC_CMD_READ_T1, 2, 0, 0,
+		HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN, 
+		HP_SDC_CMD_READ_T2, 2, 0, 0,
+		HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN, 
+		HP_SDC_CMD_READ_T3, 2, 0, 0,
+		HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN, 
+		HP_SDC_CMD_READ_T4, 2, 0, 0,
+		HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN, 
+		HP_SDC_CMD_READ_T5, 2, 0, 0
+	};
+
+	t.endidx = numreg * 5;
+
+	tseq[1] = loadcmd;
+	tseq[t.endidx - 4] |= HP_SDC_ACT_SEMAPHORE; /* numreg assumed > 1 */
+
+	t.seq =			tseq;
+	t.act.semaphore =	&i8042tregs;
+
+	/* Sleep if output regs in use. */
+	if (WARN_ON(down_interruptible(&i8042tregs)))
+		return -1;
+
+	if (hp_sdc_enqueue_transaction(&t)) {
+		up(&i8042tregs);
+		return -1;
+	}
+	
+	/* Sleep until results come back. */
+	if (WARN_ON(down_interruptible(&i8042tregs)))
+		return -1;
+
+	up(&i8042tregs);
+
+	return (tseq[5] | 
+		((uint64_t)(tseq[10]) << 8)  | ((uint64_t)(tseq[15]) << 16) |
+		((uint64_t)(tseq[20]) << 24) | ((uint64_t)(tseq[25]) << 32));
+}
+
+
+/* Read the i8042 real-time clock */
+static inline int hp_sdc_rtc_read_rt(struct timeval *res) {
+	int64_t raw;
+	uint32_t tenms; 
+	unsigned int days;
+
+	raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_RT, 5);
+	if (raw < 0) return -1;
+
+	tenms = (uint32_t)raw & 0xffffff;
+	days  = (unsigned int)(raw >> 24) & 0xffff;
+
+	res->tv_usec = (suseconds_t)(tenms % 100) * 10000;
+	res->tv_sec =  (time_t)(tenms / 100) + days * 86400;
+
+	return 0;
+}
+
+
+/* Read the i8042 fast handshake timer */
+static inline int hp_sdc_rtc_read_fhs(struct timeval *res) {
+	int64_t raw;
+	unsigned int tenms;
+
+	raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_FHS, 2);
+	if (raw < 0) return -1;
+
+	tenms = (unsigned int)raw & 0xffff;
+
+	res->tv_usec = (suseconds_t)(tenms % 100) * 10000;
+	res->tv_sec  = (time_t)(tenms / 100);
+
+	return 0;
+}
+
+
+/* Read the i8042 match timer (a.k.a. alarm) */
+static inline int hp_sdc_rtc_read_mt(struct timeval *res) {
+	int64_t raw;	
+	uint32_t tenms; 
+
+	raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_MT, 3);
+	if (raw < 0) return -1;
+
+	tenms = (uint32_t)raw & 0xffffff;
+
+	res->tv_usec = (suseconds_t)(tenms % 100) * 10000;
+	res->tv_sec  = (time_t)(tenms / 100);
+
+	return 0;
+}
+
+
+/* Read the i8042 delay timer */
+static inline int hp_sdc_rtc_read_dt(struct timeval *res) {
+	int64_t raw;
+	uint32_t tenms;
+
+	raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_DT, 3);
+	if (raw < 0) return -1;
+
+	tenms = (uint32_t)raw & 0xffffff;
+
+	res->tv_usec = (suseconds_t)(tenms % 100) * 10000;
+	res->tv_sec  = (time_t)(tenms / 100);
+
+	return 0;
+}
+
+
+/* Read the i8042 cycle timer (a.k.a. periodic) */
+static inline int hp_sdc_rtc_read_ct(struct timeval *res) {
+	int64_t raw;
+	uint32_t tenms;
+
+	raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_CT, 3);
+	if (raw < 0) return -1;
+
+	tenms = (uint32_t)raw & 0xffffff;
+
+	res->tv_usec = (suseconds_t)(tenms % 100) * 10000;
+	res->tv_sec  = (time_t)(tenms / 100);
+
+	return 0;
+}
+
+
+#if 0 /* not used yet */
+/* Set the i8042 real-time clock */
+static int hp_sdc_rtc_set_rt (struct timeval *setto)
+{
+	uint32_t tenms;
+	unsigned int days;
+	hp_sdc_transaction t;
+	uint8_t tseq[11] = {
+		HP_SDC_ACT_PRECMD | HP_SDC_ACT_DATAOUT,
+		HP_SDC_CMD_SET_RTMS, 3, 0, 0, 0,
+		HP_SDC_ACT_PRECMD | HP_SDC_ACT_DATAOUT,
+		HP_SDC_CMD_SET_RTD, 2, 0, 0 
+	};
+
+	t.endidx = 10;
+
+	if (0xffff < setto->tv_sec / 86400) return -1;
+	days = setto->tv_sec / 86400;
+	if (0xffff < setto->tv_usec / 1000000 / 86400) return -1;
+	days += ((setto->tv_sec % 86400) + setto->tv_usec / 1000000) / 86400;
+	if (days > 0xffff) return -1;
+
+	if (0xffffff < setto->tv_sec) return -1;
+	tenms  = setto->tv_sec * 100;
+	if (0xffffff < setto->tv_usec / 10000) return -1;
+	tenms += setto->tv_usec / 10000;
+	if (tenms > 0xffffff) return -1;
+
+	tseq[3] = (uint8_t)(tenms & 0xff);
+	tseq[4] = (uint8_t)((tenms >> 8)  & 0xff);
+	tseq[5] = (uint8_t)((tenms >> 16) & 0xff);
+
+	tseq[9] = (uint8_t)(days & 0xff);
+	tseq[10] = (uint8_t)((days >> 8) & 0xff);
+
+	t.seq =	tseq;
+
+	if (hp_sdc_enqueue_transaction(&t)) return -1;
+	return 0;
+}
+
+/* Set the i8042 fast handshake timer */
+static int hp_sdc_rtc_set_fhs (struct timeval *setto)
+{
+	uint32_t tenms;
+	hp_sdc_transaction t;
+	uint8_t tseq[5] = {
+		HP_SDC_ACT_PRECMD | HP_SDC_ACT_DATAOUT,
+		HP_SDC_CMD_SET_FHS, 2, 0, 0
+	};
+
+	t.endidx = 4;
+
+	if (0xffff < setto->tv_sec) return -1;
+	tenms  = setto->tv_sec * 100;
+	if (0xffff < setto->tv_usec / 10000) return -1;
+	tenms += setto->tv_usec / 10000;
+	if (tenms > 0xffff) return -1;
+
+	tseq[3] = (uint8_t)(tenms & 0xff);
+	tseq[4] = (uint8_t)((tenms >> 8)  & 0xff);
+
+	t.seq =	tseq;
+
+	if (hp_sdc_enqueue_transaction(&t)) return -1;
+	return 0;
+}
+
+
+/* Set the i8042 match timer (a.k.a. alarm) */
+#define hp_sdc_rtc_set_mt (setto) \
+	hp_sdc_rtc_set_i8042timer(setto, HP_SDC_CMD_SET_MT)
+
+/* Set the i8042 delay timer */
+#define hp_sdc_rtc_set_dt (setto) \
+	hp_sdc_rtc_set_i8042timer(setto, HP_SDC_CMD_SET_DT)
+
+/* Set the i8042 cycle timer (a.k.a. periodic) */
+#define hp_sdc_rtc_set_ct (setto) \
+	hp_sdc_rtc_set_i8042timer(setto, HP_SDC_CMD_SET_CT)
+
+/* Set one of the i8042 3-byte wide timers */
+static int hp_sdc_rtc_set_i8042timer (struct timeval *setto, uint8_t setcmd)
+{
+	uint32_t tenms;
+	hp_sdc_transaction t;
+	uint8_t tseq[6] = {
+		HP_SDC_ACT_PRECMD | HP_SDC_ACT_DATAOUT,
+		0, 3, 0, 0, 0
+	};
+
+	t.endidx = 6;
+
+	if (0xffffff < setto->tv_sec) return -1;
+	tenms  = setto->tv_sec * 100;
+	if (0xffffff < setto->tv_usec / 10000) return -1;
+	tenms += setto->tv_usec / 10000;
+	if (tenms > 0xffffff) return -1;
+
+	tseq[1] = setcmd;
+	tseq[3] = (uint8_t)(tenms & 0xff);
+	tseq[4] = (uint8_t)((tenms >> 8)  & 0xff);
+	tseq[5] = (uint8_t)((tenms >> 16)  & 0xff);
+
+	t.seq =			tseq;
+
+	if (hp_sdc_enqueue_transaction(&t)) { 
+		return -1;
+	}
+	return 0;
+}
+#endif
+
+static ssize_t hp_sdc_rtc_read(struct file *file, char __user *buf,
+			       size_t count, loff_t *ppos) {
+	ssize_t retval;
+
+        if (count < sizeof(unsigned long))
+                return -EINVAL;
+
+	retval = put_user(68, (unsigned long __user *)buf);
+	return retval;
+}
+
+static unsigned int hp_sdc_rtc_poll(struct file *file, poll_table *wait)
+{
+        unsigned long l;
+
+	l = 0;
+        if (l != 0)
+                return POLLIN | POLLRDNORM;
+        return 0;
+}
+
+static int hp_sdc_rtc_open(struct inode *inode, struct file *file)
+{
+        return 0;
+}
+
+static int hp_sdc_rtc_fasync (int fd, struct file *filp, int on)
+{
+        return fasync_helper (fd, filp, on, &hp_sdc_rtc_async_queue);
+}
+
+static int hp_sdc_rtc_proc_show(struct seq_file *m, void *v)
+{
+#define YN(bit) ("no")
+#define NY(bit) ("yes")
+        struct rtc_time tm;
+	struct timeval tv;
+
+	memset(&tm, 0, sizeof(struct rtc_time));
+
+	if (hp_sdc_rtc_read_bbrtc(&tm)) {
+		seq_puts(m, "BBRTC\t\t: READ FAILED!\n");
+	} else {
+		seq_printf(m,
+			     "rtc_time\t: %02d:%02d:%02d\n"
+			     "rtc_date\t: %04d-%02d-%02d\n"
+			     "rtc_epoch\t: %04lu\n",
+			     tm.tm_hour, tm.tm_min, tm.tm_sec,
+			     tm.tm_year + 1900, tm.tm_mon + 1, 
+			     tm.tm_mday, epoch);
+	}
+
+	if (hp_sdc_rtc_read_rt(&tv)) {
+		seq_puts(m, "i8042 rtc\t: READ FAILED!\n");
+	} else {
+		seq_printf(m, "i8042 rtc\t: %ld.%02d seconds\n", 
+			     tv.tv_sec, (int)tv.tv_usec/1000);
+	}
+
+	if (hp_sdc_rtc_read_fhs(&tv)) {
+		seq_puts(m, "handshake\t: READ FAILED!\n");
+	} else {
+        	seq_printf(m, "handshake\t: %ld.%02d seconds\n", 
+			     tv.tv_sec, (int)tv.tv_usec/1000);
+	}
+
+	if (hp_sdc_rtc_read_mt(&tv)) {
+		seq_puts(m, "alarm\t\t: READ FAILED!\n");
+	} else {
+		seq_printf(m, "alarm\t\t: %ld.%02d seconds\n", 
+			     tv.tv_sec, (int)tv.tv_usec/1000);
+	}
+
+	if (hp_sdc_rtc_read_dt(&tv)) {
+		seq_puts(m, "delay\t\t: READ FAILED!\n");
+	} else {
+		seq_printf(m, "delay\t\t: %ld.%02d seconds\n", 
+			     tv.tv_sec, (int)tv.tv_usec/1000);
+	}
+
+	if (hp_sdc_rtc_read_ct(&tv)) {
+		seq_puts(m, "periodic\t: READ FAILED!\n");
+	} else {
+		seq_printf(m, "periodic\t: %ld.%02d seconds\n", 
+			     tv.tv_sec, (int)tv.tv_usec/1000);
+	}
+
+        seq_printf(m,
+                     "DST_enable\t: %s\n"
+                     "BCD\t\t: %s\n"
+                     "24hr\t\t: %s\n"
+                     "square_wave\t: %s\n"
+                     "alarm_IRQ\t: %s\n"
+                     "update_IRQ\t: %s\n"
+                     "periodic_IRQ\t: %s\n"
+		     "periodic_freq\t: %ld\n"
+                     "batt_status\t: %s\n",
+                     YN(RTC_DST_EN),
+                     NY(RTC_DM_BINARY),
+                     YN(RTC_24H),
+                     YN(RTC_SQWE),
+                     YN(RTC_AIE),
+                     YN(RTC_UIE),
+                     YN(RTC_PIE),
+                     1UL,
+                     1 ? "okay" : "dead");
+
+        return 0;
+#undef YN
+#undef NY
+}
+
+static int hp_sdc_rtc_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, hp_sdc_rtc_proc_show, NULL);
+}
+
+static const struct file_operations hp_sdc_rtc_proc_fops = {
+	.open		= hp_sdc_rtc_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static int hp_sdc_rtc_ioctl(struct file *file, 
+			    unsigned int cmd, unsigned long arg)
+{
+#if 1
+	return -EINVAL;
+#else
+	
+        struct rtc_time wtime; 
+	struct timeval ttime;
+	int use_wtime = 0;
+
+	/* This needs major work. */
+
+        switch (cmd) {
+
+        case RTC_AIE_OFF:       /* Mask alarm int. enab. bit    */
+        case RTC_AIE_ON:        /* Allow alarm interrupts.      */
+	case RTC_PIE_OFF:       /* Mask periodic int. enab. bit */
+        case RTC_PIE_ON:        /* Allow periodic ints          */
+        case RTC_UIE_ON:        /* Allow ints for RTC updates.  */
+        case RTC_UIE_OFF:       /* Allow ints for RTC updates.  */
+        {
+		/* We cannot mask individual user timers and we
+		   cannot tell them apart when they occur, so it 
+		   would be disingenuous to succeed these IOCTLs */
+		return -EINVAL;
+        }
+        case RTC_ALM_READ:      /* Read the present alarm time */
+        {
+		if (hp_sdc_rtc_read_mt(&ttime)) return -EFAULT;
+		if (hp_sdc_rtc_read_bbrtc(&wtime)) return -EFAULT;
+
+		wtime.tm_hour = ttime.tv_sec / 3600;  ttime.tv_sec %= 3600;
+		wtime.tm_min  = ttime.tv_sec / 60;    ttime.tv_sec %= 60;
+		wtime.tm_sec  = ttime.tv_sec;
+                
+		break;
+        }
+        case RTC_IRQP_READ:     /* Read the periodic IRQ rate.  */
+        {
+                return put_user(hp_sdc_rtc_freq, (unsigned long *)arg);
+        }
+        case RTC_IRQP_SET:      /* Set periodic IRQ rate.       */
+        {
+                /* 
+                 * The max we can do is 100Hz.
+		 */
+
+                if ((arg < 1) || (arg > 100)) return -EINVAL;
+		ttime.tv_sec = 0;
+		ttime.tv_usec = 1000000 / arg;
+		if (hp_sdc_rtc_set_ct(&ttime)) return -EFAULT;
+		hp_sdc_rtc_freq = arg;
+                return 0;
+        }
+        case RTC_ALM_SET:       /* Store a time into the alarm */
+        {
+                /*
+                 * This expects a struct hp_sdc_rtc_time. Writing 0xff means
+                 * "don't care" or "match all" for PC timers.  The HP SDC
+		 * does not support that perk, but it could be emulated fairly
+		 * easily.  Only the tm_hour, tm_min and tm_sec are used.
+		 * We could do it with 10ms accuracy with the HP SDC, if the 
+		 * rtc interface left us a way to do that.
+                 */
+                struct hp_sdc_rtc_time alm_tm;
+
+                if (copy_from_user(&alm_tm, (struct hp_sdc_rtc_time*)arg,
+                                   sizeof(struct hp_sdc_rtc_time)))
+                       return -EFAULT;
+
+                if (alm_tm.tm_hour > 23) return -EINVAL;
+		if (alm_tm.tm_min  > 59) return -EINVAL;
+		if (alm_tm.tm_sec  > 59) return -EINVAL;  
+
+		ttime.sec = alm_tm.tm_hour * 3600 + 
+		  alm_tm.tm_min * 60 + alm_tm.tm_sec;
+		ttime.usec = 0;
+		if (hp_sdc_rtc_set_mt(&ttime)) return -EFAULT;
+                return 0;
+        }
+        case RTC_RD_TIME:       /* Read the time/date from RTC  */
+        {
+		if (hp_sdc_rtc_read_bbrtc(&wtime)) return -EFAULT;
+                break;
+        }
+        case RTC_SET_TIME:      /* Set the RTC */
+        {
+                struct rtc_time hp_sdc_rtc_tm;
+                unsigned char mon, day, hrs, min, sec, leap_yr;
+                unsigned int yrs;
+
+                if (!capable(CAP_SYS_TIME))
+                        return -EACCES;
+		if (copy_from_user(&hp_sdc_rtc_tm, (struct rtc_time *)arg,
+                                   sizeof(struct rtc_time)))
+                        return -EFAULT;
+
+                yrs = hp_sdc_rtc_tm.tm_year + 1900;
+                mon = hp_sdc_rtc_tm.tm_mon + 1;   /* tm_mon starts at zero */
+                day = hp_sdc_rtc_tm.tm_mday;
+                hrs = hp_sdc_rtc_tm.tm_hour;
+                min = hp_sdc_rtc_tm.tm_min;
+                sec = hp_sdc_rtc_tm.tm_sec;
+
+                if (yrs < 1970)
+                        return -EINVAL;
+
+                leap_yr = ((!(yrs % 4) && (yrs % 100)) || !(yrs % 400));
+
+                if ((mon > 12) || (day == 0))
+                        return -EINVAL;
+                if (day > (days_in_mo[mon] + ((mon == 2) && leap_yr)))
+                        return -EINVAL;
+		if ((hrs >= 24) || (min >= 60) || (sec >= 60))
+                        return -EINVAL;
+
+                if ((yrs -= eH) > 255)    /* They are unsigned */
+                        return -EINVAL;
+
+
+                return 0;
+        }
+        case RTC_EPOCH_READ:    /* Read the epoch.      */
+        {
+                return put_user (epoch, (unsigned long *)arg);
+        }
+        case RTC_EPOCH_SET:     /* Set the epoch.       */
+        {
+                /* 
+                 * There were no RTC clocks before 1900.
+                 */
+                if (arg < 1900)
+		  return -EINVAL;
+		if (!capable(CAP_SYS_TIME))
+		  return -EACCES;
+		
+                epoch = arg;
+                return 0;
+        }
+        default:
+                return -EINVAL;
+        }
+        return copy_to_user((void *)arg, &wtime, sizeof wtime) ? -EFAULT : 0;
+#endif
+}
+
+static long hp_sdc_rtc_unlocked_ioctl(struct file *file,
+				      unsigned int cmd, unsigned long arg)
+{
+	int ret;
+
+	mutex_lock(&hp_sdc_rtc_mutex);
+	ret = hp_sdc_rtc_ioctl(file, cmd, arg);
+	mutex_unlock(&hp_sdc_rtc_mutex);
+
+	return ret;
+}
+
+
+static const struct file_operations hp_sdc_rtc_fops = {
+        .owner =		THIS_MODULE,
+        .llseek =		no_llseek,
+        .read =			hp_sdc_rtc_read,
+        .poll =			hp_sdc_rtc_poll,
+        .unlocked_ioctl =	hp_sdc_rtc_unlocked_ioctl,
+        .open =			hp_sdc_rtc_open,
+        .fasync =		hp_sdc_rtc_fasync,
+};
+
+static struct miscdevice hp_sdc_rtc_dev = {
+        .minor =	RTC_MINOR,
+        .name =		"rtc_HIL",
+        .fops =		&hp_sdc_rtc_fops
+};
+
+static int __init hp_sdc_rtc_init(void)
+{
+	int ret;
+
+#ifdef __mc68000__
+	if (!MACH_IS_HP300)
+		return -ENODEV;
+#endif
+
+	sema_init(&i8042tregs, 1);
+
+	if ((ret = hp_sdc_request_timer_irq(&hp_sdc_rtc_isr)))
+		return ret;
+	if (misc_register(&hp_sdc_rtc_dev) != 0)
+		printk(KERN_INFO "Could not register misc. dev for i8042 rtc\n");
+
+        proc_create("driver/rtc", 0, NULL, &hp_sdc_rtc_proc_fops);
+
+	printk(KERN_INFO "HP i8042 SDC + MSM-58321 RTC support loaded "
+			 "(RTC v " RTC_VERSION ")\n");
+
+	return 0;
+}
+
+static void __exit hp_sdc_rtc_exit(void)
+{
+	remove_proc_entry ("driver/rtc", NULL);
+        misc_deregister(&hp_sdc_rtc_dev);
+	hp_sdc_release_timer_irq(hp_sdc_rtc_isr);
+        printk(KERN_INFO "HP i8042 SDC + MSM-58321 RTC support unloaded\n");
+}
+
+module_init(hp_sdc_rtc_init);
+module_exit(hp_sdc_rtc_exit);