Linux Kernels

ARM: EXYNOS: move mct driver to drivers/clocksource

This change “ARM: EXYNOS: move mct driver to drivers/clocksource” (commit 6938d75) in Linux kernel is authored by Thomas Abraham <thomas.abraham [at] linaro.org> on Sat Mar 9 16:16:13 2013 +0900.

Description of "ARM: EXYNOS: move mct driver to drivers/clocksource"

The change “ARM: EXYNOS: move mct driver to drivers/clocksource” introduces changes as follows.

ARM: EXYNOS: move mct driver to drivers/clocksource

Move the multi core timer (mct) driver to from mach-exynos
to drivers/clocksource and update the Kconfig and makefiles.

Cc: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

Linux kernel releases containing commit 6938d75

The Linux kernel releases containing this commit are as follows.

Linux kernel code changes from "ARM: EXYNOS: move mct driver to drivers/clocksource"

There are 16 lines of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.

 arch/arm/Kconfig                                            | 2 +-
 arch/arm/mach-exynos/Kconfig                                | 6 ------
 arch/arm/mach-exynos/Makefile                               | 2 --
 drivers/clocksource/Kconfig                                 | 5 +++++
 drivers/clocksource/Makefile                                | 1 +
 .../mach-exynos/mct.c => drivers/clocksource/exynos_mct.c   | 0
 6 files changed, 7 insertions(+), 9 deletions(-)
 rename arch/arm/mach-exynos/mct.c => drivers/clocksource/exynos_mct.c (100%)
 
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 5b714695b01b..94a062894a10 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1650,7 +1650,7 @@ config LOCAL_TIMERS
 	bool "Use local timer interrupts"
 	depends on SMP
 	default y
-	select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
+	select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !CLKSRC_EXYNOS_MCT)
 	help
 	  Enable support for local timers on SMP platforms, rather then the
 	  legacy IPI broadcast method.  Local timers allows the system
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 52f51e7b4a0c..b0802eb24d40 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -79,12 +79,6 @@ config SOC_EXYNOS5440
 	help
 	  Enable EXYNOS5440 SoC support
 
-config EXYNOS4_MCT
-	bool
-	default y
-	help
-	  Use MCT (Multi Core Timer) as kernel timers
-
 config EXYNOS_DEV_DMA
 	bool
 	help
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 435757e57bb4..daf289b21486 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -26,8 +26,6 @@ obj-$(CONFIG_ARCH_EXYNOS)	+= pmu.o
 
 obj-$(CONFIG_SMP)		+= platsmp.o headsmp.o
 
-obj-$(CONFIG_EXYNOS4_MCT)	+= mct.o
-
 obj-$(CONFIG_HOTPLUG_CPU)	+= hotplug.o
 
 # machine support
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index e507ab7df60b..e8c453285151 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -67,3 +67,8 @@ config CLKSRC_METAG_GENERIC
 	def_bool y if METAG
 	help
 	  This option enables support for the Meta per-thread timers.
+
+config CLKSRC_EXYNOS_MCT
+	def_bool y if ARCH_EXYNOS
+	help
+	  Support for Multi Core Timer controller on Exynos SoCs.
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 4d8283aec5b5..1c1b15db7c4d 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_ARCH_BCM2835)	+= bcm2835_timer.o
 obj-$(CONFIG_SUNXI_TIMER)	+= sunxi_timer.o
 obj-$(CONFIG_ARCH_TEGRA)	+= tegra20_timer.o
 obj-$(CONFIG_VT8500_TIMER)	+= vt8500_timer.o
+obj-$(CONFIG_CLKSRC_EXYNOS_MCT)	+= exynos_mct.o
 
 obj-$(CONFIG_ARM_ARCH_TIMER)		+= arm_arch_timer.o
 obj-$(CONFIG_CLKSRC_METAG_GENERIC)	+= metag_generic.o
diff --git a/arch/arm/mach-exynos/mct.c b/drivers/clocksource/exynos_mct.c
similarity index 100%
rename from arch/arm/mach-exynos/mct.c
rename to drivers/clocksource/exynos_mct.c

The commit for this change in Linux stable tree is 6938d75 (patch).

Last modified: 2020/01/11 09:47