+++ /dev/null
---- /dev/null
-+++ b/Documentation/pps/Makefile
-@@ -0,0 +1,27 @@
-+TARGETS = ppstest ppsctl
-+
-+CFLAGS += -Wall -O2 -D_GNU_SOURCE
-+CFLAGS += -I .
-+CFLAGS += -ggdb
-+
-+# -- Actions section ----------------------------------------------------------
-+
-+.PHONY : all depend dep
-+
-+all : .depend $(TARGETS)
-+
-+.depend depend dep :
-+ $(CC) $(CFLAGS) -M $(TARGETS:=.c) > .depend
-+
-+ifeq (.depend,$(wildcard .depend))
-+include .depend
-+endif
-+
-+
-+# -- Clean section ------------------------------------------------------------
-+
-+.PHONY : clean
-+
-+clean :
-+ rm -f *.o *~ core .depend
-+ rm -f ${TARGETS}
---- /dev/null
-+++ b/Documentation/pps/pps.txt
-@@ -0,0 +1,170 @@
-+
-+ PPS - Pulse Per Second
-+ ----------------------
-+
-+(C) Copyright 2007 Rodolfo Giometti <giometti@enneenne.com>
-+
-+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.
-+
-+This program is distributed in the hope that it will be useful,
-+but WITHOUT ANY WARRANTY; without even the implied warranty of
-+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+GNU General Public License for more details.
-+
-+
-+
-+Overview
-+--------
-+
-+LinuxPPS provides a programming interface (API) to define into the
-+system several PPS sources.
-+
-+PPS means "pulse per second" and a PPS source is just a device which
-+provides a high precision signal each second so that an application
-+can use it to adjust system clock time.
-+
-+A PPS source can be connected to a serial port (usually to the Data
-+Carrier Detect pin) or to a parallel port (ACK-pin) or to a special
-+CPU's GPIOs (this is the common case in embedded systems) but in each
-+case when a new pulse comes the system must apply to it a timestamp
-+and record it for the userland.
-+
-+Common use is the combination of the NTPD as userland program with a
-+GPS receiver as PPS source to obtain a wallclock-time with
-+sub-millisecond synchronisation to UTC.
-+
-+
-+RFC considerations
-+------------------
-+
-+While implementing a PPS API as RFC 2783 defines and using an embedded
-+CPU GPIO-Pin as physical link to the signal, I encountered a deeper
-+problem:
-+
-+ At startup it needs a file descriptor as argument for the function
-+ time_pps_create().
-+
-+This implies that the source has a /dev/... entry. This assumption is
-+ok for the serial and parallel port, where you can do something
-+useful besides(!) the gathering of timestamps as it is the central
-+task for a PPS-API. But this assumption does not work for a single
-+purpose GPIO line. In this case even basic file-related functionality
-+(like read() and write()) makes no sense at all and should not be a
-+precondition for the use of a PPS-API.
-+
-+The problem can be simply solved if you consider that a PPS source is
-+not always connected with a GPS data source.
-+
-+So your programs should check if the GPS data source (the serial port
-+for instance) is a PPS source too, otherwise they should provide the
-+possibility to open another device as PPS source.
-+
-+In LinuxPPS the PPS sources are simply char devices usually mapped
-+into files /dev/pps0, /dev/pps1, etc..
-+
-+
-+Coding example
-+--------------
-+
-+To register a PPS source into the kernel you should define a struct
-+pps_source_info_s as follow:
-+
-+ static struct pps_source_info_s pps_ktimer_info = {
-+ name : "ktimer",
-+ path : "",
-+ mode : PPS_CAPTUREASSERT | PPS_OFFSETASSERT | \
-+ PPS_ECHOASSERT | \
-+ PPS_CANWAIT | PPS_TSFMT_TSPEC,
-+ echo : pps_ktimer_echo,
-+ owner : THIS_MODULE,
-+ };
-+
-+and then calling the function pps_register_source() in your
-+intialization routine as follow:
-+
-+ source = pps_register_source(&pps_ktimer_info,
-+ PPS_CAPTUREASSERT | PPS_OFFSETASSERT);
-+
-+The pps_register_source() prototype is:
-+
-+ int pps_register_source(struct pps_source_info_s *info, int default_params)
-+
-+where "info" is a pointer to a structure that describes a particular
-+PPS source, "default_params" tells the system what the initial default
-+parameters for the device should be (is obvious that these parameters
-+must be a subset of ones defined into the struct
-+pps_source_info_s which describe the capabilities of the driver).
-+
-+Once you have registered a new PPS source into the system you can
-+signal an assert event (for example in the interrupt handler routine)
-+just using:
-+
-+ pps_event(source, PPS_CAPTUREASSERT, ptr);
-+
-+The same function may also run the defined echo function
-+(pps_ktimer_echo(), passing to it the "ptr" pointer) if the user
-+asked for that... etc..
-+
-+Please see the file drivers/pps/clients/ktimer.c for an example code.
-+
-+
-+SYSFS support
-+-------------
-+
-+If the SYSFS filesystem is enabled in the kernel it provides a new class:
-+
-+ $ ls /sys/class/pps/
-+ pps0/ pps1/ pps2/
-+
-+Every directory is the ID of a PPS sources defined into the system and
-+inside you find several files:
-+
-+ $ ls /sys/class/pps/pps0/
-+ assert clear echo mode name path subsystem@ uevent
-+
-+Inside each "assert" and "clear" file you can find the timestamp and a
-+sequence number:
-+
-+ $ cat /sys/class/pps/pps0/assert
-+ 1170026870.983207967#8
-+
-+Where before the "#" is the timestamp in seconds and after it is the
-+sequence number. Other files are:
-+
-+* echo: reports if the PPS source has an echo function or not;
-+
-+* mode: reports available PPS functioning modes;
-+
-+* name: reports the PPS source's name;
-+
-+* path: reports the PPS source's device path, that is the device the
-+ PPS source is connected to (if it exists).
-+
-+
-+Testing the PPS support
-+-----------------------
-+
-+In order to test the PPS support even without specific hardware you can use
-+the ktimer driver (see the client subsection in the PPS configuration menu)
-+and the userland tools provided into Documentaion/pps/ directory.
-+
-+Once you have enabled the compilation of ktimer just modprobe it (if
-+not statically compiled):
-+
-+ # modprobe ktimer
-+
-+and the run ppstest as follow:
-+
-+ $ ./ppstest /dev/pps0
-+ trying PPS source "/dev/pps1"
-+ found PPS source "/dev/pps1"
-+ ok, found 1 source(s), now start fetching data...
-+ source 0 - assert 1186592699.388832443, sequence: 364 - clear 0.000000000, sequence: 0
-+ source 0 - assert 1186592700.388931295, sequence: 365 - clear 0.000000000, sequence: 0
-+ source 0 - assert 1186592701.389032765, sequence: 366 - clear 0.000000000, sequence: 0
-+
-+Please, note that to compile userland programs you need the file timepps.h
-+(see Documentation/pps/).
---- /dev/null
-+++ b/Documentation/pps/ppsctl.c
-@@ -0,0 +1,62 @@
-+#include <stdio.h>
-+#include <unistd.h>
-+#include <stdlib.h>
-+#include <errno.h>
-+#include <sys/ioctl.h>
-+#include <sys/types.h>
-+#include <sys/stat.h>
-+#include <fcntl.h>
-+#include <string.h>
-+#include <linux/serial.h>
-+
-+void usage(char *name)
-+{
-+ fprintf(stderr, "usage: %s <ttyS> [enable|disable]\n", name);
-+
-+ exit(EXIT_FAILURE);
-+}
-+
-+int main(int argc, char *argv[])
-+{
-+ int fd;
-+ int ret;
-+ struct serial_struct ss;
-+
-+ if (argc < 2)
-+ usage(argv[0]);
-+
-+ fd = open(argv[1], O_RDWR);
-+ if (fd < 0) {
-+ perror("open");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ ret = ioctl(fd, TIOCGSERIAL, &ss);
-+ if (ret < 0) {
-+ perror("ioctl(TIOCGSERIAL)");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ if (argc < 3) { /* just read PPS status */
-+ printf("PPS is %sabled\n",
-+ ss.flags & ASYNC_HARDPPS_CD ? "en" : "dis");
-+ exit(EXIT_SUCCESS);
-+ }
-+
-+ if (argv[2][0] == 'e' || argv[2][0] == '1')
-+ ss.flags |= ASYNC_HARDPPS_CD;
-+ else if (argv[2][0] == 'd' || argv[2][0] == '0')
-+ ss.flags &= ~ASYNC_HARDPPS_CD;
-+ else {
-+ fprintf(stderr, "invalid state argument \"%s\"\n", argv[2]);
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ ret = ioctl(fd, TIOCSSERIAL, &ss);
-+ if (ret < 0) {
-+ perror("ioctl(TIOCSSERIAL)");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ return 0;
-+}
---- /dev/null
-+++ b/Documentation/pps/ppsfind
-@@ -0,0 +1,17 @@
-+#!/bin/sh
-+
-+SYS="/sys/class/pps/"
-+
-+if [ $# -lt 1 ] ; then
-+ echo "usage: ppsfind <name>" >&2
-+ exit 1
-+fi
-+
-+for d in $(ls $SYS) ; do
-+ if grep $1 $SYS/$d/name >& /dev/null || \
-+ grep $1 $SYS/$d/path >& /dev/null ; then
-+ echo "$d: name=$(cat $SYS/$d/name) path=$(cat $SYS/$d/path)"
-+ fi
-+done
-+
-+exit 0
---- /dev/null
-+++ b/Documentation/pps/ppstest.c
-@@ -0,0 +1,151 @@
-+#include <stdio.h>
-+#include <stdlib.h>
-+#include <unistd.h>
-+#include <errno.h>
-+#include <string.h>
-+#include <sys/types.h>
-+#include <sys/stat.h>
-+#include <fcntl.h>
-+
-+#include <timepps.h>
-+
-+int find_source(char *path, pps_handle_t *handle, int *avail_mode)
-+{
-+ pps_params_t params;
-+ int ret;
-+
-+ printf("trying PPS source \"%s\"\n", path);
-+
-+ /* Try to find the source by using the supplied "path" name */
-+ ret = open(path, O_RDWR);
-+ if (ret < 0) {
-+ fprintf(stderr, "unable to open device \"%s\" (%m)\n", path);
-+ return ret;
-+ }
-+
-+ /* Open the PPS source (and check the file descriptor) */
-+ ret = time_pps_create(ret, handle);
-+ if (ret < 0) {
-+ fprintf(stderr, "cannot create a PPS source from device "
-+ "\"%s\" (%m)\n", path);
-+ return -1;
-+ }
-+ printf("found PPS source \"%s\"\n", path);
-+
-+ /* Find out what features are supported */
-+ ret = time_pps_getcap(*handle, avail_mode);
-+ if (ret < 0) {
-+ fprintf(stderr, "cannot get capabilities (%m)\n");
-+ return -1;
-+ }
-+ if ((*avail_mode & PPS_CAPTUREASSERT) == 0) {
-+ fprintf(stderr, "cannot CAPTUREASSERT\n");
-+ return -1;
-+ }
-+ if ((*avail_mode & PPS_OFFSETASSERT) == 0) {
-+ fprintf(stderr, "cannot OFFSETASSERT\n");
-+ return -1;
-+ }
-+
-+ /* Capture assert timestamps, and compensate for a 675 nsec
-+ * propagation delay */
-+ ret = time_pps_getparams(*handle, ¶ms);
-+ if (ret < 0) {
-+ fprintf(stderr, "cannot get parameters (%m)\n");
-+ return -1;
-+ }
-+ params.assert_offset.tv_sec = 0;
-+ params.assert_offset.tv_nsec = 675;
-+ params.mode |= PPS_CAPTUREASSERT | PPS_OFFSETASSERT;
-+ ret = time_pps_setparams(*handle, ¶ms);
-+ if (ret < 0) {
-+ fprintf(stderr, "cannot set parameters (%m)\n");
-+ return -1;
-+ }
-+
-+ return 0;
-+}
-+
-+int fetch_source(int i, pps_handle_t *handle, int *avail_mode)
-+{
-+ struct timespec timeout;
-+ pps_info_t infobuf;
-+ int ret;
-+
-+ /* create a zero-valued timeout */
-+ timeout.tv_sec = 3;
-+ timeout.tv_nsec = 0;
-+
-+retry:
-+ if (*avail_mode & PPS_CANWAIT) /* waits for the next event */
-+ ret = time_pps_fetch(*handle, PPS_TSFMT_TSPEC, &infobuf,
-+ &timeout);
-+ else {
-+ sleep(1);
-+ ret = time_pps_fetch(*handle, PPS_TSFMT_TSPEC, &infobuf,
-+ &timeout);
-+ }
-+ if (ret < 0) {
-+ if (ret == -EINTR) {
-+ fprintf(stderr, "time_pps_fetch() got a signal!\n");
-+ goto retry;
-+ }
-+
-+ fprintf(stderr, "time_pps_fetch() error %d (%m)\n", ret);
-+ return -1;
-+ }
-+
-+ printf("source %d - "
-+ "assert %ld.%09ld, sequence: %ld - "
-+ "clear %ld.%09ld, sequence: %ld\n",
-+ i,
-+ infobuf.assert_timestamp.tv_sec,
-+ infobuf.assert_timestamp.tv_nsec,
-+ infobuf.assert_sequence,
-+ infobuf.clear_timestamp.tv_sec,
-+ infobuf.clear_timestamp.tv_nsec, infobuf.clear_sequence);
-+
-+ return 0;
-+}
-+
-+void usage(char *name)
-+{
-+ fprintf(stderr, "usage: %s <ppsdev> [<ppsdev> ...]\n", name);
-+ exit(EXIT_FAILURE);
-+}
-+
-+int main(int argc, char *argv[])
-+{
-+ int num;
-+ pps_handle_t handle[4];
-+ int avail_mode[4];
-+ int i = 0;
-+ int ret;
-+
-+ /* Check the command line */
-+ if (argc < 2)
-+ usage(argv[0]);
-+
-+ for (i = 1; i < argc && i <= 4; i++) {
-+ ret = find_source(argv[i], &handle[i - 1], &avail_mode[i - 1]);
-+ if (ret < 0)
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ num = i - 1;
-+ printf("ok, found %d source(s), now start fetching data...\n", num);
-+
-+ /* loop, printing the most recent timestamp every second or so */
-+ while (1) {
-+ for (i = 0; i < num; i++) {
-+ ret = fetch_source(i, &handle[i], &avail_mode[i]);
-+ if (ret < 0 && errno != ETIMEDOUT)
-+ exit(EXIT_FAILURE);
-+ }
-+ }
-+
-+ for (; i >= 0; i--)
-+ time_pps_destroy(handle[i]);
-+
-+ return 0;
-+}
---- /dev/null
-+++ b/Documentation/pps/timepps.h
-@@ -0,0 +1,193 @@
-+/*
-+ * timepps.h -- PPS API main header
-+ *
-+ * Copyright (C) 2005-2007 Rodolfo Giometti <giometti@linux.it>
-+ *
-+ * 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.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-+ */
-+
-+#ifndef _SYS_TIMEPPS_H_
-+#define _SYS_TIMEPPS_H_
-+
-+#include <sys/syscall.h>
-+#include <unistd.h>
-+#include <errno.h>
-+#include <linux/pps.h>
-+
-+/*
-+ * New data structures
-+ */
-+
-+struct ntp_fp {
-+ unsigned int integral;
-+ unsigned int fractional;
-+};
-+
-+union pps_timeu {
-+ struct timespec tspec;
-+ struct ntp_fp ntpfp;
-+ unsigned long longpad[3];
-+};
-+
-+struct pps_info {
-+ unsigned long assert_sequence; /* seq. num. of assert event */
-+ unsigned long clear_sequence; /* seq. num. of clear event */
-+ union pps_timeu assert_tu; /* time of assert event */
-+ union pps_timeu clear_tu; /* time of clear event */
-+ int current_mode; /* current mode bits */
-+};
-+
-+struct pps_params {
-+ int api_version; /* API version # */
-+ int mode; /* mode bits */
-+ union pps_timeu assert_off_tu; /* offset compensation for assert */
-+ union pps_timeu clear_off_tu; /* offset compensation for clear */
-+};
-+
-+typedef int pps_handle_t; /* represents a PPS source */
-+typedef unsigned long pps_seq_t; /* sequence number */
-+typedef struct ntp_fp ntp_fp_t; /* NTP-compatible time stamp */
-+typedef union pps_timeu pps_timeu_t; /* generic data type for time stamps */
-+typedef struct pps_info pps_info_t;
-+typedef struct pps_params pps_params_t;
-+
-+#define assert_timestamp assert_tu.tspec
-+#define clear_timestamp clear_tu.tspec
-+
-+#define assert_timestamp_ntpfp assert_tu.ntpfp
-+#define clear_timestamp_ntpfp clear_tu.ntpfp
-+
-+#define assert_offset assert_off_tu.tspec
-+#define clear_offset clear_off_tu.tspec
-+
-+#define assert_offset_ntpfp assert_off_tu.ntpfp
-+#define clear_offset_ntpfp clear_off_tu.ntpfp
-+
-+/*
-+ * The PPS API
-+ */
-+
-+static __inline int time_pps_create(int source, pps_handle_t *handle)
-+{
-+ int ret;
-+
-+ if (!handle) {
-+ errno = EINVAL;
-+ return -1;
-+ }
-+
-+ /* First we check if current device is a PPS valid PPS one...
-+ */
-+ ret = ioctl(source, PPS_CHECK);
-+ if (ret) {
-+ errno = EOPNOTSUPP;
-+ return -1;
-+ }
-+
-+ /* ... then since in LinuxPPS there are no differences between a
-+ * "PPS source" and a "PPS handle", we simply return the same value.
-+ */
-+ *handle = source;
-+
-+ return 0;
-+}
-+
-+static __inline int time_pps_destroy(pps_handle_t handle)
-+{
-+ return close(handle);
-+}
-+
-+static __inline int time_pps_getparams(pps_handle_t handle,
-+ pps_params_t *ppsparams)
-+{
-+ int ret;
-+ struct pps_kparams __ppsparams;
-+
-+ ret = ioctl(handle, PPS_GETPARAMS, &__ppsparams);
-+
-+ ppsparams->api_version = __ppsparams.api_version;
-+ ppsparams->mode = __ppsparams.mode;
-+ ppsparams->assert_off_tu.tspec.tv_sec = __ppsparams.assert_off_tu.sec;
-+ ppsparams->assert_off_tu.tspec.tv_nsec = __ppsparams.assert_off_tu.nsec;
-+ ppsparams->clear_off_tu.tspec.tv_sec = __ppsparams.clear_off_tu.sec;
-+ ppsparams->clear_off_tu.tspec.tv_nsec = __ppsparams.clear_off_tu.nsec;
-+
-+ return ret;
-+}
-+
-+static __inline int time_pps_setparams(pps_handle_t handle,
-+ const pps_params_t *ppsparams)
-+{
-+ struct pps_kparams __ppsparams;
-+
-+ __ppsparams.api_version = ppsparams->api_version;
-+ __ppsparams.mode = ppsparams->mode;
-+ __ppsparams.assert_off_tu.sec = ppsparams->assert_off_tu.tspec.tv_sec;
-+ __ppsparams.assert_off_tu.nsec = ppsparams->assert_off_tu.tspec.tv_nsec;
-+ __ppsparams.clear_off_tu.sec = ppsparams->clear_off_tu.tspec.tv_sec;
-+ __ppsparams.clear_off_tu.nsec = ppsparams->clear_off_tu.tspec.tv_nsec;
-+
-+ return ioctl(handle, PPS_SETPARAMS, &__ppsparams);
-+}
-+
-+/* Get capabilities for handle */
-+static __inline int time_pps_getcap(pps_handle_t handle, int *mode)
-+{
-+ return ioctl(handle, PPS_GETCAP, mode);
-+}
-+
-+static __inline int time_pps_fetch(pps_handle_t handle, const int tsformat,
-+ pps_info_t *ppsinfobuf,
-+ const struct timespec *timeout)
-+{
-+ struct pps_fdata __fdata;
-+ int ret;
-+
-+ /* Sanity checks */
-+ if (tsformat != PPS_TSFMT_TSPEC) {
-+ errno = EINVAL;
-+ return -1;
-+ }
-+
-+ if (timeout) {
-+ __fdata.timeout.sec = timeout->tv_sec;
-+ __fdata.timeout.nsec = timeout->tv_nsec;
-+ __fdata.timeout.flags = ~PPS_TIME_INVALID;
-+ } else
-+ __fdata.timeout.flags = PPS_TIME_INVALID;
-+
-+ ret = ioctl(handle, PPS_FETCH, &__fdata);
-+
-+ ppsinfobuf->assert_sequence = __fdata.info.assert_sequence;
-+ ppsinfobuf->clear_sequence = __fdata.info.clear_sequence;
-+ ppsinfobuf->assert_tu.tspec.tv_sec = __fdata.info.assert_tu.sec;
-+ ppsinfobuf->assert_tu.tspec.tv_nsec = __fdata.info.assert_tu.nsec;
-+ ppsinfobuf->clear_tu.tspec.tv_sec = __fdata.info.clear_tu.sec;
-+ ppsinfobuf->clear_tu.tspec.tv_nsec = __fdata.info.clear_tu.nsec;
-+ ppsinfobuf->current_mode = __fdata.info.current_mode;
-+
-+ return ret;
-+}
-+
-+static __inline int time_pps_kcbind(pps_handle_t handle,
-+ const int kernel_consumer,
-+ const int edge, const int tsformat)
-+{
-+ /* LinuxPPS doesn't implement kernel consumer feature */
-+ errno = EOPNOTSUPP;
-+ return -1;
-+}
-+
-+#endif /* _SYS_TIMEPPS_H_ */
---- a/MAINTAINERS
-+++ b/MAINTAINERS
-@@ -3011,6 +3011,13 @@ P: James Chapman
- M: jchapman@katalix.com
- S: Maintained
-
-+PPS SUPPORT
-+P: Rodolfo Giometti
-+M: giometti@enneenne.com
-+W: http://wiki.enneenne.com/index.php/LinuxPPS_support
-+L: linuxpps@ml.enneenne.com
-+S: Maintained
-+
- PREEMPTIBLE KERNEL
- P: Robert Love
- M: rml@tech9.net
---- a/drivers/Kconfig
-+++ b/drivers/Kconfig
-@@ -52,6 +52,8 @@ source "drivers/i2c/Kconfig"
-
- source "drivers/spi/Kconfig"
-
-+source "drivers/pps/Kconfig"
-+
- source "drivers/w1/Kconfig"
-
- source "drivers/power/Kconfig"
---- a/drivers/Makefile
-+++ b/drivers/Makefile
-@@ -63,6 +63,7 @@ obj-$(CONFIG_INPUT) += input/
- obj-$(CONFIG_I2O) += message/
- obj-$(CONFIG_RTC_LIB) += rtc/
- obj-y += i2c/
-+obj-$(CONFIG_PPS) += pps/
- obj-$(CONFIG_W1) += w1/
- obj-$(CONFIG_POWER_SUPPLY) += power/
- obj-$(CONFIG_HWMON) += hwmon/
---- a/drivers/char/lp.c
-+++ b/drivers/char/lp.c
-@@ -746,6 +746,27 @@ static struct console lpcons = {
-
- #endif /* console on line printer */
-
-+/* Support for PPS signal on the line printer */
-+
-+#ifdef CONFIG_PPS_CLIENT_LP
-+
-+static void lp_pps_echo(int source, int event, void *data)
-+{
-+ struct parport *port = data;
-+ unsigned char status = parport_read_status(port);
-+
-+ /* echo event via SEL bit */
-+ parport_write_control(port,
-+ parport_read_control(port) | PARPORT_CONTROL_SELECT);
-+
-+ /* signal no event */
-+ if ((status & PARPORT_STATUS_ACK) != 0)
-+ parport_write_control(port,
-+ parport_read_control(port) & ~PARPORT_CONTROL_SELECT);
-+}
-+
-+#endif
-+
- /* --- initialisation code ------------------------------------- */
-
- static int parport_nr[LP_NO] = { [0 ... LP_NO-1] = LP_PARPORT_UNSPEC };
-@@ -817,6 +838,38 @@ static int lp_register(int nr, struct pa
- }
- #endif
-
-+#ifdef CONFIG_PPS_CLIENT_LP
-+ port->pps_info.owner = THIS_MODULE;
-+ port->pps_info.dev = port->dev;
-+ snprintf(port->pps_info.path, PPS_MAX_NAME_LEN, "/dev/lp%d", nr);
-+
-+ /* No PPS support if lp port has no IRQ line */
-+ if (port->irq != PARPORT_IRQ_NONE) {
-+ strncpy(port->pps_info.name, port->name, PPS_MAX_NAME_LEN);
-+
-+ port->pps_info.mode = PPS_CAPTUREASSERT | PPS_OFFSETASSERT | \
-+ PPS_ECHOASSERT | \
-+ PPS_CANWAIT | PPS_TSFMT_TSPEC;
-+
-+ port->pps_info.echo = lp_pps_echo;
-+
-+ port->pps_source = pps_register_source(&(port->pps_info),
-+ PPS_CAPTUREASSERT | PPS_OFFSETASSERT);
-+ if (port->pps_source < 0)
-+ dev_err(port->dev,
-+ "cannot register PPS source \"%s\"\n",
-+ port->pps_info.path);
-+ else
-+ dev_info(port->dev, "PPS source #%d \"%s\" added\n",
-+ port->pps_source, port->pps_info.path);
-+ } else {
-+ port->pps_source = -1;
-+ dev_err(port->dev, "PPS support disabled due port \"%s\" is "
-+ "in polling mode\n",
-+ port->pps_info.path);
-+ }
-+#endif
-+
- return 0;
- }
-
-@@ -860,6 +913,14 @@ static void lp_detach (struct parport *p
- console_registered = NULL;
- }
- #endif /* CONFIG_LP_CONSOLE */
-+
-+#ifdef CONFIG_PPS_CLIENT_LP
-+ if (port->pps_source >= 0) {
-+ pps_unregister_source(port->pps_source);
-+ dev_dbg(port->dev, "PPS source #%d \"%s\" removed\n",
-+ port->pps_source, port->pps_info.path);
-+ }
-+#endif
- }
-
- static struct parport_driver lp_driver = {
---- /dev/null
-+++ b/drivers/pps/Kconfig
-@@ -0,0 +1,34 @@
-+#
-+# PPS support configuration
-+#
-+
-+menu "PPS support"
-+
-+config PPS
-+ tristate "PPS support"
-+ depends on EXPERIMENTAL
-+ ---help---
-+ PPS (Pulse Per Second) is a special pulse provided by some GPS
-+ antennae. Userland can use it to get an high time reference.
-+
-+ Some antennae's PPS signals are connected with the CD (Carrier
-+ Detect) pin of the serial line they use to communicate with the
-+ host. In this case use the SERIAL_LINE client support.
-+
-+ Some antennae's PPS signals are connected with some special host
-+ inputs so you have to enable the corresponding client support.
-+
-+ To compile this driver as a module, choose M here: the module
-+ will be called pps_core.ko.
-+
-+config PPS_DEBUG
-+ bool "PPS debugging messages"
-+ depends on PPS
-+ help
-+ Say Y here if you want the PPS support to produce a bunch of debug
-+ messages to the system log. Select this if you are having a
-+ problem with PPS support and want to see more of what is going on.
-+
-+source drivers/pps/clients/Kconfig
-+
-+endmenu
---- /dev/null
-+++ b/drivers/pps/Makefile
-@@ -0,0 +1,11 @@
-+#
-+# Makefile for the PPS core.
-+#
-+
-+pps_core-objs += pps.o kapi.o sysfs.o
-+obj-$(CONFIG_PPS) += pps_core.o
-+obj-y += clients/
-+
-+ifeq ($(CONFIG_PPS_DEBUG),y)
-+EXTRA_CFLAGS += -DDEBUG
-+endif
---- /dev/null
-+++ b/drivers/pps/clients/Kconfig
-@@ -0,0 +1,38 @@
-+#
-+# PPS clients configuration
-+#
-+
-+if PPS
-+
-+comment "PPS clients support"
-+
-+config PPS_CLIENT_KTIMER
-+ tristate "Kernel timer client (Testing client, use for debug)"
-+ help
-+ If you say yes here you get support for a PPS debugging client
-+ which uses a kernel timer to generate the PPS signal.
-+
-+ This driver can also be built as a module. If so, the module
-+ will be called ktimer.ko.
-+
-+comment "UART serial support (forced off)"
-+ depends on ! (SERIAL_CORE != n && !(PPS = m && SERIAL_CORE = y))
-+
-+config PPS_CLIENT_UART
-+ bool "UART serial support"
-+ depends on SERIAL_CORE != n && !(PPS = m && SERIAL_CORE = y)
-+ help
-+ If you say yes here you get support for a PPS source connected
-+ with the CD (Carrier Detect) pin of your serial port.
-+
-+comment "Parallel printer support (forced off)"
-+ depends on !( PRINTER != n && !(PPS = m && PRINTER = y))
-+
-+config PPS_CLIENT_LP
-+ bool "Parallel printer support"
-+ depends on PRINTER != n && !(PPS = m && PRINTER = y)
-+ help
-+ If you say yes here you get support for a PPS source connected
-+ with the interrupt pin of your parallel port.
-+
-+endif
---- /dev/null
-+++ b/drivers/pps/clients/Makefile
-@@ -0,0 +1,9 @@
-+#
-+# Makefile for PPS clients.
-+#
-+
-+obj-$(CONFIG_PPS_CLIENT_KTIMER) += ktimer.o
-+
-+ifeq ($(CONFIG_PPS_DEBUG),y)
-+EXTRA_CFLAGS += -DDEBUG
-+endif
---- /dev/null
-+++ b/drivers/pps/clients/ktimer.c
-@@ -0,0 +1,114 @@
-+/*
-+ * ktimer.c -- kernel timer test client
-+ *
-+ *
-+ * Copyright (C) 2005-2006 Rodolfo Giometti <giometti@linux.it>
-+ *
-+ * 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.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-+ */
-+
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/time.h>
-+#include <linux/timer.h>
-+
-+#include <linux/pps.h>
-+
-+/*
-+ * Global variables
-+ */
-+
-+static int source;
-+static struct timer_list ktimer;
-+
-+/*
-+ * The kernel timer
-+ */
-+
-+static void pps_ktimer_event(unsigned long ptr)
-+{
-+ pr_info("PPS event at %lu\n", jiffies);
-+
-+ pps_event(source, PPS_CAPTUREASSERT, NULL);
-+
-+ mod_timer(&ktimer, jiffies + HZ);
-+}
-+
-+/*
-+ * The echo function
-+ */
-+
-+static void pps_ktimer_echo(int source, int event, void *data)
-+{
-+ pr_info("echo %s %s for source %d\n",
-+ event & PPS_CAPTUREASSERT ? "assert" : "",
-+ event & PPS_CAPTURECLEAR ? "clear" : "",
-+ source);
-+}
-+
-+/*
-+ * The PPS info struct
-+ */
-+
-+static struct pps_source_info pps_ktimer_info = {
-+ name : "ktimer",
-+ path : "",
-+ mode : PPS_CAPTUREASSERT | PPS_OFFSETASSERT | \
-+ PPS_ECHOASSERT | \
-+ PPS_CANWAIT | PPS_TSFMT_TSPEC,
-+ echo : pps_ktimer_echo,
-+ owner : THIS_MODULE,
-+};
-+
-+/*
-+ * Module staff
-+ */
-+
-+static void __exit pps_ktimer_exit(void)
-+{
-+ del_timer_sync(&ktimer);
-+ pps_unregister_source(source);
-+
-+ pr_info("ktimer PPS source unregistered\n");
-+}
-+
-+static int __init pps_ktimer_init(void)
-+{
-+ int ret;
-+
-+ ret = pps_register_source(&pps_ktimer_info,
-+ PPS_CAPTUREASSERT | PPS_OFFSETASSERT);
-+ if (ret < 0) {
-+ printk(KERN_ERR "cannot register ktimer source\n");
-+ return ret;
-+ }
-+ source = ret;
-+
-+ setup_timer(&ktimer, pps_ktimer_event, 0);
-+ mod_timer(&ktimer, jiffies + HZ);
-+
-+ pr_info("ktimer PPS source registered at %d\n", source);
-+
-+ return 0;
-+}
-+
-+module_init(pps_ktimer_init);
-+module_exit(pps_ktimer_exit);
-+
-+MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
-+MODULE_DESCRIPTION("dummy PPS source by using a kernel timer (just for debug)");
-+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/drivers/pps/kapi.c
-@@ -0,0 +1,271 @@
-+/*
-+ * kapi.c -- kernel API
-+ *
-+ *
-+ * Copyright (C) 2005-2007 Rodolfo Giometti <giometti@linux.it>
-+ *
-+ * 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.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-+ */
-+
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/sched.h>
-+#include <linux/time.h>
-+#include <linux/spinlock.h>
-+#include <linux/idr.h>
-+#include <linux/fs.h>
-+#include <linux/pps.h>
-+
-+/*
-+ * Local variables
-+ */
-+
-+static spinlock_t idr_lock = SPIN_LOCK_UNLOCKED;
-+static DEFINE_IDR(pps_idr);
-+
-+/*
-+ * Local functions
-+ */
-+
-+static void pps_add_offset(struct pps_ktime *ts, struct pps_ktime *offset)
-+{
-+ ts->nsec += offset->nsec;
-+ if (ts->nsec >= NSEC_PER_SEC) {
-+ ts->nsec -= NSEC_PER_SEC;
-+ ts->sec++;
-+ } else if (ts->nsec < 0) {
-+ ts->nsec += NSEC_PER_SEC;
-+ ts->sec--;
-+ }
-+ ts->sec += offset->sec;
-+}
-+
-+/*
-+ * Exported functions
-+ */
-+
-+int pps_register_source(struct pps_source_info *info, int default_params)
-+{
-+ struct pps_device *pps;
-+ int id;
-+ int err;
-+
-+ /* Sanity checks */
-+ if ((info->mode & default_params) != default_params) {
-+ printk(KERN_ERR "pps: %s: unsupported default parameters\n",
-+ info->name);
-+ err = -EINVAL;
-+ goto pps_register_source_exit;
-+ }
-+ if ((info->mode & (PPS_ECHOASSERT | PPS_ECHOCLEAR)) != 0 &&
-+ info->echo == NULL) {
-+ printk(KERN_ERR "pps: %s: echo function is not defined\n",
-+ info->name);
-+ err = -EINVAL;
-+ goto pps_register_source_exit;
-+ }
-+ if ((info->mode & (PPS_TSFMT_TSPEC | PPS_TSFMT_NTPFP)) == 0) {
-+ printk(KERN_ERR "pps: %s: unspecified time format\n",
-+ info->name);
-+ err = -EINVAL;
-+ goto pps_register_source_exit;
-+ }
-+
-+ /* Allocate memory for the new PPS source struct */
-+ pps = kzalloc(sizeof(struct pps_device), GFP_KERNEL);
-+ if (pps == NULL) {
-+ err = -ENOMEM;
-+ goto pps_register_source_exit;
-+ }
-+
-+ /* Get new ID for the new PPS source */
-+ if (idr_pre_get(&pps_idr, GFP_KERNEL) == 0) {
-+ err = -ENOMEM;
-+ goto kfree_pps;
-+ }
-+
-+ spin_lock_irq(&idr_lock);
-+ err = idr_get_new(&pps_idr, pps, &id);
-+ spin_unlock_irq(&idr_lock);
-+
-+ if (err < 0)
-+ goto kfree_pps;
-+
-+ id = id & MAX_ID_MASK;
-+ if (id >= PPS_MAX_SOURCES) {
-+ printk(KERN_ERR "pps: %s: too much PPS sources in the system\n",
-+ info->name);
-+ err = -EBUSY;
-+ goto free_idr;
-+ }
-+
-+ pps->id = id;
-+ pps->params.api_version = PPS_API_VERS;
-+ pps->params.mode = default_params;
-+ pps->info = *info;
-+
-+ init_waitqueue_head(&pps->queue);
-+ spin_lock_init(&pps->lock);
-+ atomic_set(&pps->usage, 0);
-+ init_waitqueue_head(&pps->usage_queue);
-+
-+ /* Create the char device */
-+ err = pps_register_cdev(pps);
-+ if (err < 0) {
-+ printk(KERN_ERR "pps: %s: unable to create char device\n",
-+ info->name);
-+ goto free_idr;
-+ }
-+
-+ /* Create the sysfs entry */
-+ err = pps_sysfs_create_source_entry(pps);
-+ if (err < 0) {
-+ printk(KERN_ERR "pps: %s: unable to create sysfs entries\n",
-+ info->name);
-+ goto unregister_cdev;
-+ }
-+
-+ pr_info("new PPS source %s at ID %d\n", info->name, id);
-+
-+ return id;
-+
-+unregister_cdev:
-+ pps_unregister_cdev(pps);
-+
-+free_idr:
-+ spin_lock_irq(&idr_lock);
-+ idr_remove(&pps_idr, id);
-+ spin_unlock_irq(&idr_lock);
-+
-+kfree_pps:
-+ kfree(pps);
-+
-+pps_register_source_exit:
-+ printk(KERN_ERR "pps: %s: unable to register source\n", info->name);
-+
-+ return err;
-+}
-+EXPORT_SYMBOL(pps_register_source);
-+
-+void pps_unregister_source(int source)
-+{
-+ struct pps_device *pps;
-+
-+ spin_lock_irq(&idr_lock);
-+ pps = idr_find(&pps_idr, source);
-+
-+ if (!pps) {
-+ spin_unlock_irq(&idr_lock);
-+ return;
-+ }
-+
-+ /* This should be done first in order to deny IRQ handlers
-+ * to access PPS structs
-+ */
-+
-+ idr_remove(&pps_idr, pps->id);
-+ spin_unlock_irq(&idr_lock);
-+
-+ wait_event(pps->usage_queue, atomic_read(&pps->usage) == 0);
-+
-+ pps_sysfs_remove_source_entry(pps);
-+ pps_unregister_cdev(pps);
-+ kfree(pps);
-+}
-+EXPORT_SYMBOL(pps_unregister_source);
-+
-+void pps_event(int source, int event, void *data)
-+{
-+ struct pps_device *pps;
-+ struct timespec __ts;
-+ struct pps_ktime ts;
-+ unsigned long flags;
-+
-+ /* First of all we get the time stamp... */
-+ getnstimeofday(&__ts);
-+
-+ /* ... and translate it to PPS time data struct */
-+ ts.sec = __ts.tv_sec;
-+ ts.nsec = __ts.tv_nsec;
-+
-+ if ((event & (PPS_CAPTUREASSERT | PPS_CAPTURECLEAR)) == 0 ) {
-+ printk(KERN_ERR "pps: unknown event (%x) for source %d\n",
-+ event, source);
-+ return;
-+ }
-+
-+ spin_lock_irqsave(&idr_lock, flags);
-+ pps = idr_find(&pps_idr, source);
-+
-+ /* If we find a valid PPS source we lock it before leaving
-+ * the lock!
-+ */
-+ if (pps)
-+ atomic_inc(&pps->usage);
-+ spin_unlock_irqrestore(&idr_lock, flags);
-+
-+ if (!pps)
-+ return;
-+
-+ pr_debug("PPS event on source %d at at %llu.%06u\n",
-+ pps->id, ts.sec, ts.nsec);
-+
-+ spin_lock_irqsave(&pps->lock, flags);
-+
-+ /* Must call the echo function? */
-+ if ((pps->params.mode & (PPS_ECHOASSERT | PPS_ECHOCLEAR)))
-+ pps->info.echo(source, event, data);
-+
-+ /* Check the event */
-+ pps->current_mode = pps->params.mode;
-+ if (event & PPS_CAPTUREASSERT) {
-+ /* We have to add an offset? */
-+ if (pps->params.mode & PPS_OFFSETASSERT)
-+ pps_add_offset(&ts, &pps->params.assert_off_tu);
-+
-+ /* Save the time stamp */
-+ pps->assert_tu = ts;
-+ pps->assert_sequence++;
-+ pr_debug("capture assert seq #%u for source %d\n",
-+ pps->assert_sequence, source);
-+ }
-+ if (event & PPS_CAPTURECLEAR) {
-+ /* We have to add an offset? */
-+ if (pps->params.mode & PPS_OFFSETCLEAR)
-+ pps_add_offset(&ts, &pps->params.clear_off_tu);
-+
-+ /* Save the time stamp */
-+ pps->clear_tu = ts;
-+ pps->clear_sequence++;
-+ pr_debug("capture clear seq #%u for source %d\n",
-+ pps->clear_sequence, source);
-+ }
-+
-+ pps->go = ~0;
-+ wake_up_interruptible(&pps->queue);
-+
-+ kill_fasync(&pps->async_queue, SIGIO, POLL_IN);
-+
-+ spin_unlock_irqrestore(&pps->lock, flags);
-+
-+ /* Now we can release the PPS source for (possible) deregistration */
-+ spin_lock_irqsave(&idr_lock, flags);
-+ atomic_dec(&pps->usage);
-+ wake_up_all(&pps->usage_queue);
-+ spin_unlock_irqrestore(&idr_lock, flags);
-+}
-+EXPORT_SYMBOL(pps_event);
---- /dev/null
-+++ b/drivers/pps/pps.c
-@@ -0,0 +1,332 @@
-+/*
-+ * pps.c -- Main PPS support file
-+ *
-+ *
-+ * Copyright (C) 2005-2007 Rodolfo Giometti <giometti@linux.it>
-+ *
-+ * 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.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-+ */
-+
-+
-+#include <linux/kernel.h>
-+#include <linux/version.h>
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/sched.h>
-+#include <linux/uaccess.h>
-+#include <linux/cdev.h>
-+#include <linux/poll.h>
-+#include <linux/pps.h>
-+
-+/*
-+ * Local variables
-+ */
-+
-+static dev_t pps_devt;
-+static struct class *pps_class;
-+
-+/*
-+ * Char device methods
-+ */
-+
-+static unsigned int pps_cdev_poll(struct file *file, poll_table *wait)
-+{
-+ struct pps_device *pps = file->private_data;
-+
-+ poll_wait(file, &pps->queue, wait);
-+
-+ return POLLIN | POLLRDNORM;
-+}
-+
-+static int pps_cdev_fasync(int fd, struct file *file, int on)
-+{
-+ struct pps_device *pps = file->private_data;
-+ return fasync_helper(fd, file, on, &pps->async_queue);
-+}
-+
-+static int pps_cdev_ioctl(struct inode *inode, struct file *file,
-+ unsigned int cmd, unsigned long arg)
-+{
-+ struct pps_device *pps = file->private_data;
-+ struct pps_kparams params;
-+ struct pps_fdata fdata;
-+ unsigned long ticks;
-+ void __user *uarg = (void __user *) arg;
-+ int __user *iuarg = (int __user *) arg;
-+ int err;
-+
-+ switch (cmd) {
-+ case PPS_CHECK:
-+
-+ /* This does nothing but signal we are a PPS source... */
-+
-+ return 0;
-+
-+ case PPS_GETPARAMS:
-+ pr_debug("PPS_GETPARAMS: source %d\n", pps->id);
-+
-+ /* Sanity checks */
-+ if (!uarg)
-+ return -EINVAL;
-+
-+ /* Return current parameters */
-+ err = copy_to_user(uarg, &pps->params,
-+ sizeof(struct pps_kparams));
-+ if (err)
-+ return -EFAULT;
-+
-+ break;
-+
-+ case PPS_SETPARAMS:
-+ pr_debug("PPS_SETPARAMS: source %d\n", pps->id);
-+
-+ /* Check the capabilities */
-+ if (!capable(CAP_SYS_TIME))
-+ return -EPERM;
-+
-+ /* Sanity checks */
-+ if (!uarg)
-+ return -EINVAL;
-+ err = copy_from_user(¶ms, uarg, sizeof(struct pps_kparams));
-+ if (err)
-+ return -EFAULT;
-+ if (!(params.mode & (PPS_CAPTUREASSERT | PPS_CAPTURECLEAR))) {
-+ pr_debug("capture mode unspecified (%x)\n",
-+ params.mode);
-+ return -EINVAL;
-+ }
-+
-+ /* Check for supported capabilities */
-+ if ((params.mode & ~pps->info.mode) != 0) {
-+ pr_debug("unsupported capabilities (%x)\n",
-+ params.mode);
-+ return -EINVAL;
-+ }
-+
-+ spin_lock_irq(&pps->lock);
-+
-+ /* Save the new parameters */
-+ pps->params = params;
-+
-+ /* Restore the read only parameters */
-+ if ((params.mode & (PPS_TSFMT_TSPEC | PPS_TSFMT_NTPFP)) == 0) {
-+ /* section 3.3 of RFC 2783 interpreted */
-+ pr_debug("time format unspecified (%x)\n",
-+ params.mode);
-+ pps->params.mode |= PPS_TSFMT_TSPEC;
-+ }
-+ if (pps->info.mode & PPS_CANWAIT)
-+ pps->params.mode |= PPS_CANWAIT;
-+ pps->params.api_version = PPS_API_VERS;
-+
-+ spin_unlock_irq(&pps->lock);
-+
-+ break;
-+
-+ case PPS_GETCAP:
-+ pr_debug("PPS_GETCAP: source %d\n", pps->id);
-+
-+ /* Sanity checks */
-+ if (!uarg)
-+ return -EINVAL;
-+
-+ err = put_user(pps->info.mode, iuarg);
-+ if (err)
-+ return -EFAULT;
-+
-+ break;
-+
-+ case PPS_FETCH:
-+ pr_debug("PPS_FETCH: source %d\n", pps->id);
-+
-+ if (!uarg)
-+ return -EINVAL;
-+ err = copy_from_user(&fdata, uarg, sizeof(struct pps_fdata));
-+ if (err)
-+ return -EFAULT;
-+
-+ pps->go = 0;
-+
-+ /* Manage the timeout */
-+ if (fdata.timeout.flags & PPS_TIME_INVALID)
-+ err = wait_event_interruptible(pps->queue, pps->go);
-+ else {
-+ pr_debug("timeout %lld.%09d\n",
-+ fdata.timeout.sec, fdata.timeout.nsec);
-+ ticks = fdata.timeout.sec * HZ;
-+ ticks += fdata.timeout.nsec / (NSEC_PER_SEC / HZ);
-+
-+ if (ticks != 0) {
-+ err = wait_event_interruptible_timeout(
-+ pps->queue, pps->go, ticks);
-+ if (err == 0)
-+ return -ETIMEDOUT;
-+ }
-+ }
-+
-+ /* Check for pending signals */
-+ if (err == -ERESTARTSYS) {
-+ pr_debug("pending signal caught\n");
-+ return -EINTR;
-+ }
-+
-+ /* Return the fetched timestamp */
-+ spin_lock_irq(&pps->lock);
-+
-+ fdata.info.assert_sequence = pps->assert_sequence;
-+ fdata.info.clear_sequence = pps->clear_sequence;
-+ fdata.info.assert_tu = pps->assert_tu;
-+ fdata.info.clear_tu = pps->clear_tu;
-+ fdata.info.current_mode = pps->current_mode;
-+
-+ spin_unlock_irq(&pps->lock);
-+
-+ err = copy_to_user(uarg, &fdata, sizeof(struct pps_fdata));
-+ if (err)
-+ return -EFAULT;
-+
-+ break;
-+
-+ default:
-+ return -ENOTTY;
-+ break;
-+ }
-+
-+ return 0;
-+}
-+
-+static int pps_cdev_open(struct inode *inode, struct file *file)
-+{
-+ struct pps_device *pps = container_of(inode->i_cdev,
-+ struct pps_device, cdev);
-+
-+ /* Lock the PPS source against (possible) deregistration */
-+ atomic_inc(&pps->usage);
-+
-+ file->private_data = pps;
-+
-+ return 0;
-+}
-+
-+static int pps_cdev_release(struct inode *inode, struct file *file)
-+{
-+ struct pps_device *pps = file->private_data;
-+
-+ /* Free the PPS source and wake up (possible) deregistration */
-+ atomic_dec(&pps->usage);
-+ wake_up_all(&pps->usage_queue);
-+
-+ return 0;
-+}
-+
-+/*
-+ * Char device stuff
-+ */
-+
-+static const struct file_operations pps_cdev_fops = {
-+ .owner = THIS_MODULE,
-+ .llseek = no_llseek,
-+ .poll = pps_cdev_poll,
-+ .fasync = pps_cdev_fasync,
-+ .ioctl = pps_cdev_ioctl,
-+ .open = pps_cdev_open,
-+ .release = pps_cdev_release,
-+};
-+
-+int pps_register_cdev(struct pps_device *pps)
-+{
-+ int err;
-+
-+ pps->devno = MKDEV(MAJOR(pps_devt), pps->id);
-+ cdev_init(&pps->cdev, &pps_cdev_fops);
-+ pps->cdev.owner = pps->info.owner;
-+
-+ err = cdev_add(&pps->cdev, pps->devno, 1);
-+ if (err) {
-+ printk(KERN_ERR "pps: %s: failed to add char device %d:%d\n",
-+ pps->info.name, MAJOR(pps_devt), pps->id);
-+ return err;
-+ }
-+ pps->dev = device_create(pps_class, pps->info.dev, pps->devno,
-+ "pps%d", pps->id);
-+ if (err)
-+ goto del_cdev;
-+ dev_set_drvdata(pps->dev, pps);
-+
-+ pr_debug("source %s got cdev (%d:%d)\n", pps->info.name,
-+ MAJOR(pps_devt), pps->id);
-+
-+ return 0;
-+
-+del_cdev:
-+ cdev_del(&pps->cdev);
-+
-+ return err;
-+}
-+
-+void pps_unregister_cdev(struct pps_device *pps)
-+{
-+ device_destroy(pps_class, pps->devno);
-+ cdev_del(&pps->cdev);
-+}
-+
-+/*
-+ * Module staff
-+ */
-+
-+static void __exit pps_exit(void)
-+{
-+ class_destroy(pps_class);
-+
-+ if (pps_devt)
-+ unregister_chrdev_region(pps_devt, PPS_MAX_SOURCES);
-+
-+ pr_info("LinuxPPS API ver. %d removed\n", PPS_API_VERS);
-+}
-+
-+static int __init pps_init(void)
-+{
-+ int err;
-+
-+ pps_class = class_create(THIS_MODULE, "pps");
-+ if (!pps_class) {
-+ printk(KERN_ERR "pps: ailed to allocate class\n");
-+ return -ENOMEM;
-+ }
-+
-+ err = alloc_chrdev_region(&pps_devt, 0, PPS_MAX_SOURCES, "pps");
-+ if (err < 0) {
-+ printk(KERN_ERR "pps: failed to allocate char device region\n");
-+ goto remove_class;
-+ }
-+
-+ pr_info("LinuxPPS API ver. %d registered\n", PPS_API_VERS);
-+ pr_info("Software ver. %s - Copyright 2005-2007 Rodolfo Giometti "
-+ "<giometti@linux.it>\n", PPS_VERSION);
-+
-+ return 0;
-+
-+remove_class:
-+ class_destroy(pps_class);
-+
-+ return err;
-+}
-+
-+subsys_initcall(pps_init);
-+module_exit(pps_exit);
-+
-+MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
-+MODULE_DESCRIPTION("LinuxPPS support (RFC 2783) - ver. " PPS_VERSION);
-+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/drivers/pps/sysfs.c
-@@ -0,0 +1,124 @@
-+/*
-+ * sysfs.c -- sysfs support
-+ *
-+ *
-+ * Copyright (C) 2007 Rodolfo Giometti <giometti@linux.it>
-+ *
-+ * 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.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-+ */
-+
-+
-+#include <linux/device.h>
-+#include <linux/module.h>
-+#include <linux/string.h>
-+#include <linux/pps.h>
-+
-+/*
-+ * Attribute functions
-+ */
-+
-+static ssize_t pps_show_assert(struct device *dev,
-+ struct device_attribute *attr, char *buf)
-+{
-+ struct pps_device *pps = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%lld.%09d#%d\n",
-+ pps->assert_tu.sec, pps->assert_tu.nsec,
-+ pps->assert_sequence);
-+}
-+DEVICE_ATTR(assert, S_IRUGO, pps_show_assert, NULL);
-+
-+static ssize_t pps_show_clear(struct device *dev,
-+ struct device_attribute *attr, char *buf)
-+{
-+ struct pps_device *pps = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%lld.%09d#%d\n",
-+ pps->clear_tu.sec, pps->clear_tu.nsec,
-+ pps->clear_sequence);
-+}
-+DEVICE_ATTR(clear, S_IRUGO, pps_show_clear, NULL);
-+
-+static ssize_t pps_show_mode(struct device *dev,
-+ struct device_attribute *attr, char *buf)
-+{
-+ struct pps_device *pps = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%4x\n", pps->info.mode);
-+}
-+DEVICE_ATTR(mode, S_IRUGO, pps_show_mode, NULL);
-+
-+static ssize_t pps_show_echo(struct device *dev,
-+ struct device_attribute *attr, char *buf)
-+{
-+ struct pps_device *pps = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%d\n", !!pps->info.echo);
-+}
-+DEVICE_ATTR(echo, S_IRUGO, pps_show_echo, NULL);
-+
-+static ssize_t pps_show_name(struct device *dev,
-+ struct device_attribute *attr, char *buf)
-+{
-+ struct pps_device *pps = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%s\n", pps->info.name);
-+}
-+DEVICE_ATTR(name, S_IRUGO, pps_show_name, NULL);
-+
-+static ssize_t pps_show_path(struct device *dev,
-+ struct device_attribute *attr, char *buf)
-+{
-+ struct pps_device *pps = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%s\n", pps->info.path);
-+}
-+DEVICE_ATTR(path, S_IRUGO, pps_show_path, NULL);
-+
-+/*
-+ * Public functions
-+ */
-+
-+void pps_sysfs_remove_source_entry(struct pps_device *pps)
-+{
-+ /* Delete info files */
-+ if (pps->info.mode & PPS_CAPTUREASSERT)
-+ device_remove_file(pps->dev, &dev_attr_assert);
-+
-+ if (pps->info.mode & PPS_CAPTURECLEAR)
-+ device_remove_file(pps->dev, &dev_attr_clear);
-+
-+ device_remove_file(pps->dev, &dev_attr_mode);
-+ device_remove_file(pps->dev, &dev_attr_echo);
-+ device_remove_file(pps->dev, &dev_attr_name);
-+ device_remove_file(pps->dev, &dev_attr_path);
-+}
-+
-+int pps_sysfs_create_source_entry(struct pps_device *pps)
-+{
-+ /* Create file "assert" and "clear" according to source capability */
-+ if (pps->info.mode & PPS_CAPTUREASSERT)
-+ device_create_file(pps->dev, &dev_attr_assert);
-+
-+ if (pps->info.mode & PPS_CAPTURECLEAR)
-+ device_create_file(pps->dev, &dev_attr_clear);
-+
-+ device_create_file(pps->dev, &dev_attr_mode);
-+ device_create_file(pps->dev, &dev_attr_echo);
-+ device_create_file(pps->dev, &dev_attr_name);
-+ device_create_file(pps->dev, &dev_attr_path);
-+
-+ return 0;
-+}
---- a/drivers/serial/8250.c
-+++ b/drivers/serial/8250.c
-@@ -2118,6 +2118,8 @@ serial8250_set_termios(struct uart_port
- up->ier |= UART_IER_MSI;
- if (up->capabilities & UART_CAP_UUE)
- up->ier |= UART_IER_UUE | UART_IER_RTOIE;
-+ if (up->port.flags & UPF_HARDPPS_CD)
-+ up->ier |= UART_IER_MSI; /* enable interrupts */
-
- serial_out(up, UART_IER, up->ier);
-
---- a/drivers/serial/serial_core.c
-+++ b/drivers/serial/serial_core.c
-@@ -33,6 +33,7 @@
- #include <linux/serial.h> /* for serial_state and serial_icounter_struct */
- #include <linux/delay.h>
- #include <linux/mutex.h>
-+#include <linux/pps.h>
-
- #include <asm/irq.h>
- #include <asm/uaccess.h>
-@@ -633,6 +634,54 @@ static int uart_get_info(struct uart_sta
- return 0;
- }
-
-+#ifdef CONFIG_PPS_CLIENT_UART
-+
-+static int
-+uart_register_pps_port(struct uart_state *state, struct uart_port *port)
-+{
-+ struct tty_driver *drv = port->info->tty->driver;
-+ int ret;
-+
-+ state->pps_info.owner = THIS_MODULE;
-+ state->pps_info.dev = port->dev;
-+ snprintf(state->pps_info.name, PPS_MAX_NAME_LEN, "%s%d",
-+ drv->driver_name, port->line);
-+ snprintf(state->pps_info.path, PPS_MAX_NAME_LEN, "/dev/%s%d",
-+ drv->name, port->line);
-+
-+ state->pps_info.mode = PPS_CAPTUREBOTH | \
-+ PPS_OFFSETASSERT | PPS_OFFSETCLEAR | \
-+ PPS_CANWAIT | PPS_TSFMT_TSPEC;
-+
-+ ret = pps_register_source(&state->pps_info, PPS_CAPTUREBOTH | \
-+ PPS_OFFSETASSERT | PPS_OFFSETCLEAR);
-+ if (ret < 0) {
-+ dev_err(port->dev, "cannot register PPS source \"%s\"\n",
-+ state->pps_info.path);
-+ return ret;
-+ }
-+ port->pps_source = ret;
-+ dev_dbg(port->dev, "PPS source #%d \"%s\" added\n",
-+ port->pps_source, state->pps_info.path);
-+
-+ return 0;
-+}
-+
-+static void
-+uart_unregister_pps_port(struct uart_state *state, struct uart_port *port)
-+{
-+ pps_unregister_source(port->pps_source);
-+ dev_dbg(port->dev, "PPS source #%d \"%s\" removed\n",
-+ port->pps_source, state->pps_info.path);
-+}
-+
-+#else
-+
-+#define uart_register_pps_port(state, port) do { } while (0)
-+#define uart_unregister_pps_port(state, port) do { } while (0)
-+
-+#endif /* CONFIG_PPS_CLIENT_UART */
-+
- static int uart_set_info(struct uart_state *state,
- struct serial_struct __user *newinfo)
- {
-@@ -807,11 +856,19 @@ static int uart_set_info(struct uart_sta
- (port->flags & UPF_LOW_LATENCY) ? 1 : 0;
-
- check_and_exit:
-+ /* PPS support enabled/disabled? */
-+ if ((old_flags & UPF_HARDPPS_CD) != (new_flags & UPF_HARDPPS_CD)) {
-+ if (new_flags & UPF_HARDPPS_CD)
-+ uart_register_pps_port(state, port);
-+ else
-+ uart_unregister_pps_port(state, port);
-+ }
-+
- retval = 0;
- if (port->type == PORT_UNKNOWN)
- goto exit;
- if (state->info->flags & UIF_INITIALIZED) {
-- if (((old_flags ^ port->flags) & UPF_SPD_MASK) ||
-+ if (((old_flags ^ port->flags) & (UPF_SPD_MASK|UPF_HARDPPS_CD)) ||
- old_custom_divisor != port->custom_divisor) {
- /*
- * If they're setting up a custom divisor or speed,
-@@ -2110,6 +2167,12 @@ uart_configure_port(struct uart_driver *
- port->ops->config_port(port, flags);
- }
-
-+ /*
-+ * Add the PPS support for the current port.
-+ */
-+ if (port->flags & UPF_HARDPPS_CD)
-+ uart_register_pps_port(state, port);
-+
- if (port->type != PORT_UNKNOWN) {
- unsigned long flags;
-
-@@ -2359,6 +2422,12 @@ int uart_remove_one_port(struct uart_dri
- mutex_unlock(&state->mutex);
-
- /*
-+ * Remove PPS support from the current port.
-+ */
-+ if (port->flags & UPF_HARDPPS_CD)
-+ uart_unregister_pps_port(state, port);
-+
-+ /*
- * Remove the devices from the tty layer
- */
- tty_unregister_device(drv->tty_driver, port->line);
---- a/include/linux/Kbuild
-+++ b/include/linux/Kbuild
-@@ -295,6 +295,7 @@ unifdef-y += pmu.h
- unifdef-y += poll.h
- unifdef-y += ppp_defs.h
- unifdef-y += ppp-comp.h
-+unifdef-y += pps.h
- unifdef-y += ptrace.h
- unifdef-y += qnx4_fs.h
- unifdef-y += quota.h
---- a/include/linux/parport.h
-+++ b/include/linux/parport.h
-@@ -100,6 +100,7 @@ typedef enum {
- #include <linux/proc_fs.h>
- #include <linux/spinlock.h>
- #include <linux/wait.h>
-+#include <linux/pps.h>
- #include <asm/system.h>
- #include <asm/ptrace.h>
- #include <asm/semaphore.h>
-@@ -327,6 +328,11 @@ struct parport {
-
- struct list_head full_list;
- struct parport *slaves[3];
-+
-+#ifdef CONFIG_PPS_CLIENT_LP
-+ struct pps_source_info pps_info;
-+ int pps_source; /* PPS source ID */
-+#endif
- };
-
- #define DEFAULT_SPIN_TIME 500 /* us */
-@@ -517,6 +523,12 @@ extern int parport_daisy_select (struct
- /* Lowlevel drivers _can_ call this support function to handle irqs. */
- static __inline__ void parport_generic_irq(int irq, struct parport *port)
- {
-+#ifdef CONFIG_PPS_CLIENT_LP
-+ pps_event(port->pps_source, PPS_CAPTUREASSERT, port);
-+ dev_dbg(port->dev, "PPS assert at %lu on source #%d\n",
-+ jiffies, port->pps_source);
-+#endif
-+
- parport_ieee1284_interrupt (irq, port);
- read_lock(&port->cad_lock);
- if (port->cad && port->cad->irq_func)
---- /dev/null
-+++ b/include/linux/pps.h
-@@ -0,0 +1,196 @@
-+/*
-+ * pps.h -- PPS API kernel header.
-+ *
-+ *
-+ * Copyright (C) 2005-2007 Rodolfo Giometti <giometti@linux.it>
-+ *
-+ * 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.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-+ */
-+
-+
-+#ifndef _PPS_H_
-+#define _PPS_H_
-+
-+/* Implementation note: the logical states ``assert'' and ``clear''
-+ * are implemented in terms of the chip register, i.e. ``assert''
-+ * means the bit is set. */
-+
-+/*
-+ * 3.2 New data structures
-+ */
-+
-+#ifndef __KERNEL__
-+#include <linux/types.h>
-+#include <sys/time.h>
-+#include <sys/ioctl.h>
-+#else
-+#include <linux/time.h>
-+#endif
-+
-+#define PPS_API_VERS 1
-+#define PPS_MAX_NAME_LEN 32
-+
-+/* 32-bit vs. 64-bit compatibility.
-+ *
-+ * 0n i386, the alignment of a uint64_t is only 4 bytes, while on most other
-+ * architectures it's 8 bytes. On i386, there will be no padding between the
-+ * two consecutive 'struct pps_ktime' members of struct pps_kinfo and struct
-+ * pps_kparams. But on most platforms there will be padding to ensure correct
-+ * alignment.
-+ *
-+ * The simple fix is probably to add an explicit padding.
-+ * [David Woodhouse]
-+ */
-+struct pps_ktime {
-+ __u64 sec;
-+ __u32 nsec;
-+ __u32 flags;
-+};
-+#define PPS_TIME_INVALID (1<<0) /* used to specify timeout==NULL */
-+
-+struct pps_kinfo {
-+ __u32 assert_sequence; /* seq. num. of assert event */
-+ __u32 clear_sequence; /* seq. num. of clear event */
-+ struct pps_ktime assert_tu; /* time of assert event */
-+ struct pps_ktime clear_tu; /* time of clear event */
-+ int current_mode; /* current mode bits */
-+};
-+
-+struct pps_kparams {
-+ int api_version; /* API version # */
-+ int mode; /* mode bits */
-+ struct pps_ktime assert_off_tu; /* offset compensation for assert */
-+ struct pps_ktime clear_off_tu; /* offset compensation for clear */
-+};
-+
-+/*
-+ * 3.3 Mode bit definitions
-+ */
-+
-+/* Device/implementation parameters */
-+#define PPS_CAPTUREASSERT 0x01 /* capture assert events */
-+#define PPS_CAPTURECLEAR 0x02 /* capture clear events */
-+#define PPS_CAPTUREBOTH 0x03 /* capture assert and clear events */
-+
-+#define PPS_OFFSETASSERT 0x10 /* apply compensation for assert ev. */
-+#define PPS_OFFSETCLEAR 0x20 /* apply compensation for clear ev. */
-+
-+#define PPS_CANWAIT 0x100 /* can we wait for an event? */
-+#define PPS_CANPOLL 0x200 /* bit reserved for future use */
-+
-+/* Kernel actions */
-+#define PPS_ECHOASSERT 0x40 /* feed back assert event to output */
-+#define PPS_ECHOCLEAR 0x80 /* feed back clear event to output */
-+
-+/* Timestamp formats */
-+#define PPS_TSFMT_TSPEC 0x1000 /* select timespec format */
-+#define PPS_TSFMT_NTPFP 0x2000 /* select NTP format */
-+
-+/*
-+ * 3.4.4 New functions: disciplining the kernel timebase
-+ */
-+
-+/* Kernel consumers */
-+#define PPS_KC_HARDPPS 0 /* hardpps() (or equivalent) */
-+#define PPS_KC_HARDPPS_PLL 1 /* hardpps() constrained to
-+ use a phase-locked loop */
-+#define PPS_KC_HARDPPS_FLL 2 /* hardpps() constrained to
-+ use a frequency-locked loop */
-+/*
-+ * Here begins the implementation-specific part!
-+ */
-+
-+struct pps_fdata {
-+ struct pps_kinfo info;
-+ struct pps_ktime timeout;
-+};
-+
-+#include <linux/ioctl.h>
-+
-+#define PPS_CHECK _IO('P', 0)
-+#define PPS_GETPARAMS _IOR('P', 1, struct pps_kparams *)
-+#define PPS_SETPARAMS _IOW('P', 2, struct pps_kparams *)
-+#define PPS_GETCAP _IOR('P', 3, int *)
-+#define PPS_FETCH _IOWR('P', 4, struct pps_fdata *)
-+
-+#ifdef __KERNEL__
-+
-+#include <linux/cdev.h>
-+#include <linux/device.h>
-+
-+#define PPS_VERSION "5.0.0-rc2"
-+#define PPS_MAX_SOURCES 16 /* should be enought... */
-+
-+/*
-+ * Global defines
-+ */
-+
-+/* The specific PPS source info */
-+struct pps_source_info {
-+ char name[PPS_MAX_NAME_LEN]; /* simbolic name */
-+ char path[PPS_MAX_NAME_LEN]; /* path of connected device */
-+ int mode; /* PPS's allowed mode */
-+
-+ void (*echo)(int source, int event, void *data); /* PPS echo function */
-+
-+ struct module *owner;
-+ struct device *dev;
-+};
-+
-+/* The main struct */
-+struct pps_device {
-+ struct pps_source_info info; /* PSS source info */
-+
-+ struct pps_kparams params; /* PPS's current params */
-+
-+ __u32 assert_sequence; /* PPS' assert event seq # */
-+ __u32 clear_sequence; /* PPS' clear event seq # */
-+ struct pps_ktime assert_tu;
-+ struct pps_ktime clear_tu;
-+ int current_mode; /* PPS mode at event time */
-+
-+ int go; /* PPS event is arrived? */
-+ wait_queue_head_t queue; /* PPS event queue */
-+
-+ unsigned int id; /* PPS source unique ID */
-+ struct cdev cdev;
-+ struct device *dev;
-+ int devno;
-+ struct fasync_struct *async_queue; /* fasync method */
-+ spinlock_t lock;
-+
-+ atomic_t usage; /* usage count */
-+ wait_queue_head_t usage_queue;
-+
-+ struct class_device class_dev;
-+};
-+
-+/*
-+ * Exported functions
-+ */
-+
-+extern int pps_register_source(struct pps_source_info *info,
-+ int default_params);
-+extern void pps_unregister_source(int source);
-+extern int pps_register_cdev(struct pps_device *pps);
-+extern void pps_unregister_cdev(struct pps_device *pps);
-+extern void pps_event(int source, int event, void *data);
-+
-+extern int pps_sysfs_create_source_entry(struct pps_device *pps);
-+extern void pps_sysfs_remove_source_entry(struct pps_device *pps);
-+
-+#endif /* __KERNEL__ */
-+
-+#endif /* _PPS_H_ */
---- a/include/linux/serial_core.h
-+++ b/include/linux/serial_core.h
-@@ -157,6 +157,7 @@
- #include <linux/tty.h>
- #include <linux/mutex.h>
- #include <linux/sysrq.h>
-+#include <linux/pps.h>
-
- struct uart_port;
- struct uart_info;
-@@ -236,6 +237,9 @@ struct uart_port {
- unsigned char regshift; /* reg offset shift */
- unsigned char iotype; /* io access style */
- unsigned char unused1;
-+#ifdef CONFIG_PPS_CLIENT_UART
-+ int pps_source; /* PPS source ID */
-+#endif
-
- #define UPIO_PORT (0)
- #define UPIO_HUB6 (1)
-@@ -280,7 +284,8 @@ struct uart_port {
- #define UPF_IOREMAP ((__force upf_t) (1 << 31))
-
- #define UPF_CHANGE_MASK ((__force upf_t) (0x17fff))
--#define UPF_USR_MASK ((__force upf_t) (UPF_SPD_MASK|UPF_LOW_LATENCY))
-+#define UPF_USR_MASK ((__force upf_t) (UPF_SPD_MASK|UPF_LOW_LATENCY\
-+ |UPF_HARDPPS_CD))
-
- unsigned int mctrl; /* current modem ctrl settings */
- unsigned int timeout; /* character-based timeout */
-@@ -312,6 +317,10 @@ struct uart_state {
- struct uart_info *info;
- struct uart_port *port;
-
-+#ifdef CONFIG_PPS_CLIENT_UART
-+ struct pps_source_info pps_info;
-+#endif
-+
- struct mutex mutex;
- };
-
-@@ -476,13 +485,22 @@ uart_handle_dcd_change(struct uart_port
- {
- struct uart_info *info = port->info;
-
-- port->icount.dcd++;
--
--#ifdef CONFIG_HARD_PPS
-- if ((port->flags & UPF_HARDPPS_CD) && status)
-- hardpps();
-+#ifdef CONFIG_PPS_CLIENT_UART
-+ if (port->flags & UPF_HARDPPS_CD) {
-+ if (status) {
-+ pps_event(port->pps_source, PPS_CAPTUREASSERT, port);
-+ dev_dbg(port->dev, "PPS assert at %lu on source #%d\n",
-+ jiffies, port->pps_source);
-+ } else {
-+ pps_event(port->pps_source, PPS_CAPTURECLEAR, port);
-+ dev_dbg(port->dev, "PPS clear at %lu on source #%d\n",
-+ jiffies, port->pps_source);
-+ }
-+ }
- #endif
-
-+ port->icount.dcd++;
-+
- if (info->flags & UIF_CHECK_CD) {
- if (status)
- wake_up_interruptible(&info->open_wait);
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