Move timer-related drivers from drivers/ to drivers/timers.

drivers/Kconfig

@@ -220,88 +220,7 @@ menuconfig I2S
 if I2S
 endif # I2S
 
-menuconfig RTC
+source drivers/timers/Kconfig
-	bool "RTC Driver Support"
-	default n
-	---help---
-		This selection enables configuration of a real time clock (RTCdriver.
-		See include/nuttx/rtc.h for further RTC driver information.
-		Most RTC drivers are MCU specific and may require other specific
-		settings.
-
-if RTC
-
-config RTC_DATETIME
-	bool "Date/Time RTC Support"
-	default n
-	---help---
-		There are two general types of RTC:  (1) A simple battery backed
-		counter that keeps the time when power is down, and (2) a full
-		date / time RTC the provides the date and time information, often in
-		BCD format.  If RTC_DATETIME is selected, it specifies this second kind
-		of RTC. In this case, the RTC is used to "seed" the normal NuttX timer
-		and the NuttX system timer provides for higher resolution time.
-
-if !RTC_DATETIME
-
-config RTC_HIRES
-	bool "Hi-Res RTC Support"
-	default n
-	---help---
-		If RTC_DATETIME not selected, then the simple, battery backed counter
-		is used.  There are two different implementations of such simple
-		counters based on the time resolution of the counter: The typical RTC
-		keeps time to resolution of 1 second, usually supporting a 32-bit
-		time_t value.  In this case, the RTC is used to "seed" the normal NuttX
-		timer and the NuttX timer provides for higherresoution time.
-
-		If RTC_HIRES is enabled in the NuttX configuration, then the RTC
-		provides higher resolution time and completely replaces the system
-		timer for purpose of date and time.
-
-config RTC_FREQUENCY
-	int "Hi-Res RTC frequency"
-	default 1
-	depends on RTC_HIRES
-	---help---
-		If RTC_HIRES is defined, then the frequency of the high resolution RTC
-		must be provided.  If RTC_HIRES is not defined, RTC_FREQUENCY is
-		assumed to be one Hz.
-
-endif # !RTC_DATETIME
-
-config RTC_ALARM
-	bool "RTC Alarm Support"
-	default n
-	---help---
-		Enable if the RTC hardware supports setting of an alarm.  A callback
-		function will be executed when the alarm goes off.
-
-endif # RTC
-
-menuconfig WATCHDOG
-	bool "Watchdog Timer Support"
-	default n
-	---help---
-		This selection enables building of the "upper-half" watchdog timer
-		driver. See include/nuttx/watchdog.h for further watchdog timer driver
-		information.
-
-if WATCHDOG
-
-config WATCHDOG_DEVPATH
-	string "Watchdog Device Path"
-	default "/dev/watchdog0"
-
-endif # WATCHDOG
-
-menuconfig TIMER
-	bool "Timer Support"
-	default n
-	---help---
-		This selection enables building of the "upper-half" timer
-		driver. See include/nuttx/timer.h for further timer driver
-		information.
 
 menuconfig ANALOG
 	bool "Analog Device(ADC/DAC) Support"

drivers/Makefile

@@ -65,6 +65,7 @@ include sercomm$(DELIM)Make.defs
 include serial$(DELIM)Make.defs
 include spi$(DELIM)Make.defs
 include syslog$(DELIM)Make.defs
+include timers$(DELIM)Make.defs
 include usbdev$(DELIM)Make.defs
 include usbhost$(DELIM)Make.defs
 include video$(DELIM)Make.defs
@@ -91,14 +92,6 @@ endif
 ifeq ($(CONFIG_PWM),y)
   CSRCS += pwm.c
 endif
-
-ifeq ($(CONFIG_WATCHDOG),y)
-  CSRCS += watchdog.c
-endif
-
-ifeq ($(CONFIG_TIMER),y)
-  CSRCS += timer.c
-endif
 endif
 
 AOBJS = $(ASRCS:.S=$(OBJEXT))

drivers/timers/Kconfig

@@ -0,0 +1,95 @@
+#
+# For a description of the syntax of this configuration file,
+# see misc/tools/kconfig-language.txt.
+#
+
+menuconfig TIMER
+	bool "Timer Support"
+	default n
+	---help---
+		This selection enables building of the "upper-half" timer
+		driver. See include/nuttx/timer.h for further timer driver
+		information.
+
+menuconfig RTC
+	bool "RTC Driver Support"
+	default n
+	---help---
+		This selection enables configuration of a real time clock (RTCdriver.
+		See include/nuttx/rtc.h for further RTC driver information.
+		Most RTC drivers are MCU specific and may require other specific
+		settings.
+
+if RTC
+
+config RTC_DATETIME
+	bool "Date/Time RTC Support"
+	default n
+	---help---
+		There are two general types of RTC:  (1) A simple battery backed
+		counter that keeps the time when power is down, and (2) a full
+		date / time RTC the provides the date and time information, often in
+		BCD format.  If RTC_DATETIME is selected, it specifies this second kind
+		of RTC. In this case, the RTC is used to "seed" the normal NuttX timer
+		and the NuttX system timer provides for higher resolution time.
+
+if !RTC_DATETIME
+
+config RTC_HIRES
+	bool "Hi-Res RTC Support"
+	default n
+	---help---
+		If RTC_DATETIME not selected, then the simple, battery backed counter
+		is used.  There are two different implementations of such simple
+		counters based on the time resolution of the counter: The typical RTC
+		keeps time to resolution of 1 second, usually supporting a 32-bit
+		time_t value.  In this case, the RTC is used to "seed" the normal NuttX
+		timer and the NuttX timer provides for higherresoution time.
+
+		If RTC_HIRES is enabled in the NuttX configuration, then the RTC
+		provides higher resolution time and completely replaces the system
+		timer for purpose of date and time.
+
+config RTC_FREQUENCY
+	int "Hi-Res RTC frequency"
+	default 1
+	depends on RTC_HIRES
+	---help---
+		If RTC_HIRES is defined, then the frequency of the high resolution RTC
+		must be provided.  If RTC_HIRES is not defined, RTC_FREQUENCY is
+		assumed to be one Hz.
+
+endif # !RTC_DATETIME
+
+config RTC_ALARM
+	bool "RTC Alarm Support"
+	default n
+	---help---
+		Enable if the RTC hardware supports setting of an alarm.  A callback
+		function will be executed when the alarm goes off.
+
+config RTC_DRIVER
+	bool "RTC Driver Support"
+	default n
+	---help---
+		This selection enables building of the "upper-half" RTC
+		driver. See include/nuttx/rtc.h for further RTC driver
+		information.
+
+endif # RTC
+
+menuconfig WATCHDOG
+	bool "Watchdog Timer Support"
+	default n
+	---help---
+		This selection enables building of the "upper-half" watchdog timer
+		driver. See include/nuttx/watchdog.h for further watchdog timer driver
+		information.
+
+if WATCHDOG
+
+config WATCHDOG_DEVPATH
+	string "Watchdog Device Path"
+	default "/dev/watchdog0"
+
+endif # WATCHDOG

drivers/timers/Make.defs

@@ -0,0 +1,63 @@
+############################################################################
+# drivers/timers/Make.defs
+# These drivers support various timer devices
+#
+#   Copyright (C) 20125Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+# COPYRIGHT OWNER 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 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+# Include timer drivers
+
+TMRDEPPATH =
+TMRVPATH =
+
+ifeq ($(CONFIG_WATCHDOG),y)
+  CSRCS += watchdog.c
+  TMRDEPPATH = --dep-path timers
+  TMRVPATH = :timers
+endif
+
+ifeq ($(CONFIG_TIMER),y)
+  CSRCS += timer.c
+  TMRDEPPATH = --dep-path timers
+  TMRVPATH = :timers
+endif
+
+ifeq ($(CONFIG_RTC_DRIVER),y)
+  CSRCS += rtc.c
+  TMRDEPPATH = --dep-path timers
+  TMRVPATH = :timers
+endif
+
+# Include timer build support (if any were selected)
+
+DEPPATH += $(TMRDEPPATH)
+VPATH += $(TMRVPATH)

drivers/timers/timer.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- * drivers/timer.c
+ * drivers/timers/timer.c
  *
  *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
  *   Authors: Gregory Nutt <gnutt@nuttx.org>

drivers/timers/watchdog.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- * drivers/watchdog.c
+ * drivers/timers/watchdog.c
  *
  *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>