Change the Kconfig option logic to fullfil with the current approach.

A new Kconfig option is added, CONFIG_MXS_TIMER and is selected by the
platform. Then the clocksource's Kconfig is changed to make this option
selectable by the user if the COMPILE_TEST option is set. Otherwise, it is
up to the platform's Kconfig to select the timer.

Signed-off-by: Daniel Lezcano <[email protected]>
---
 arch/arm/mach-mxs/Kconfig    | 2 +-
 drivers/clocksource/Kconfig  | 8 ++++++++
 drivers/clocksource/Makefile | 2 +-
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index 8479413..68a3a9e 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -16,7 +16,7 @@ config ARCH_MXS
        bool "Freescale MXS (i.MX23, i.MX28) support"
        depends on ARCH_MULTI_V5
        select ARCH_REQUIRE_GPIOLIB
-       select CLKSRC_MMIO
+       select MXS_TIMER
        select PINCTRL
        select SOC_BUS
        select SOC_IMX23
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index db2c5ff..5d70cdf 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -176,6 +176,14 @@ config MOXART_TIMER
        help
          Enables support for the Moxart timer.
 
+config MXS_TIMER
+       bool "Mxs timer driver" if COMPILE_TEST
+       depends on GENERIC_CLOCKEVENTS
+       select CLKSRC_MMIO
+       select STMP_DEVICE
+       help
+         Enables support for the Mxs timer.
+
 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
        bool "Clocksource PRCMU Timer sched_clock"
        depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index e64e37a..1360bba 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -23,7 +23,7 @@ obj-$(CONFIG_BCM2835_TIMER)   += bcm2835_timer.o
 obj-$(CONFIG_CLPS711X_TIMER)   += clps711x-timer.o
 obj-$(CONFIG_ATLAS7_TIMER)     += timer-atlas7.o
 obj-$(CONFIG_MOXART_TIMER)     += moxart_timer.o
-obj-$(CONFIG_ARCH_MXS)         += mxs_timer.o
+obj-$(CONFIG_MXS_TIMER)                += mxs_timer.o
 obj-$(CONFIG_CLKSRC_PXA)       += pxa_timer.o
 obj-$(CONFIG_ARCH_PRIMA2)      += timer-prima2.o
 obj-$(CONFIG_ARCH_U300)                += timer-u300.o
-- 
1.9.1

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