Increase the compilation test coverage by adding the COMPILE_TEST option.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.

Due to the non portable code for the delay timer, this option is only
available for the ARM architecture.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.

The driver depends on the common clock framework, thus the dependency added
on COMMON_CLK.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.

The driver is using the atomic_io API which is not portable, so the
compilation is restricted to ARM only.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.

Due to the non portable 'delay' code, the compilation is restricted to the
ARM architecture only.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.

Due to the dsb() usage in the driver, this driver is only compilable on
ARM and ARM64.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Instead of having the clocksource's Kconfig depending on the arch, let the
arch to select the timer it needs.

The CLKSRC_OF dependency is removed because already selected by the
ARCH_PXA, and it is added for SA1100.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Increase the compilation test coverage by adding the COMPILE_TEST option.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Change the Kconfig selection rule by letting the STI arch to select
the timer.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: NMaxime Coquelin <maxime.coquelin@st.com>

In order to be consistent with the rest of the drivers compilation, let's
introduce the COMPILE_TEST option. Unfortunately, the delay.h code is not
portable, so the compilation test coverage will be restricted to the ARM
architecture.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

We can now select clocksource drivers like ti-32k and CONFIG_OF
on ancient machines that still use gettimeoffset, and the combination
results in a link error.

arch/arm/kernel/built-in.o: In function `time_init':
(.init.text+0xc28): undefined reference to `clocksource_probe'

The reason for this is that the Makefile is hidden behind
CONFIG_ARCH_USES_GETTIMEOFFSET, but the Kconfig file is not, and
it has shown up just now because the ti-32k driver was added
and can be selected using COMPILE_TEST on all platforms.

This patch hides the Kconfig menu in CONFIG_ARCH_USES_GETTIMEOFFSET
as well.

Fixes: dfedaf10 "clocksource: ti-32k: make it depend on GENERIC_CLOCKSOURCE"
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Felipe Balbi <balbi@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: http://lkml.kernel.org/r/7579471.4N90fYPQOK@wuerfelSigned-off-by: NThomas Gleixner <tglx@linutronix.de>

the new ti 32k clocksource driver should depend on
GENERIC_CLOCKSOURCE because of its reliance on
sched_clock_register().

Let's enable that to avoid any possible build errors
and/or warnings on randbuilds.
Signed-off-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Introduce a new clocksource driver for Texas
Instruments 32.768 Hz device which is available
on most OMAP-like devices.
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Sigma Designs Tango platforms provide a 27 MHz crystal oscillator.
Use it for clocksource, sched_clock, and delay_timer.
Signed-off-by: NMarc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

It is now absolutely trivial to convert the arch timer driver to
use ACPI probing, just like its DT counterpart.

Let's enjoy another crapectomy.
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Acked-by: NThomas Gleixner <tglx@linutronix.de>
Tested-by: NHanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

The clocksource probing infrastructure currently depends on
CONFIG_CLKSRC_OF, which depends on CONFIG_OF. In order to make
this infrastructure selectable even if CONFIG_OF is not selected,
introduce a new CONFIG_CLKSRC_PROBE (which allow the infrastructure
to be compiled in), and CONFIG_CLKSRC_ACPI (which is the pendent
of CONFIG_CLKSRC_OF for ACPI).
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
Acked-by: NThomas Gleixner <tglx@linutronix.de>
Tested-by: NHanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

The Pistachio SoC provides four general purpose timers, and allow
to implement a clocksource driver.

This driver can be used as a replacement for the MIPS GIC and MIPS R4K
clocksources and sched clocks, which are clocked from the CPU clock.

Given the general purpose timers are clocked from an independent clock,
this new clocksource driver will be useful to introduce CPUFreq support
for Pistachio machines.
Signed-off-by: NEzequiel Garcia <ezequiel.garcia@imgtec.com>
Signed-off-by: NGovindraj Raja <govindraj.raja@imgtec.com>
Reviewed-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: James Hartley <James.Hartley@imgtec.com>
Cc: Damien Horsley <Damien.Horsley@imgtec.com>
Cc: James Hogan <James.Hogan@imgtec.com>
Cc: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/10899/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

USE_OF is used as intermediate Kconfig option by few arch's (ARM, MIPS,
Xtensa); in all these cases it implies setting option OF too. Replace the
only instance of USE_OF in clocksource with OF.
Signed-off-by: NAntonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

This IP is shared with Watchdog and RTC functionality.  All 3 of
these devices are mutually exclusive from one another i.e. Only 1
IP can be used at any given time.  We use the device-driver model
combined with a DT 'mode' property to enforce this.

The ST LPC Clocksource IP can be used as the system (tick) timer.
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

mips:allmodconfig fails to build with

drivers/clocksource/timer-sp804.c: In function '__sp804_clocksource_and_sched_clock_init':
drivers/clocksource/timer-sp804.c:88:3: error: implicit declaration of function 'clk_get_sys'

because CLKDEV_LOOKUP is not configured and the driver depends on it.

Fixes: 0b7402dc ("ARM: 8366/1: move Dual-Timer SP804 driver to drivers/clocksource")
Acked-by: NSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

h8300_timer8: 8bit clockevent device
h8300_timer16 / h8300_tpu: 16bit clocksource
Signed-off-by: NYoshinori Sato <ysato@users.sourceforge.jp>

This driver leaks out into arch/parisc builds that don't have
CONFIG_GENERIC_CLOCKEVENTS, leading to the following (truncated)
wreckage:

  CC      drivers/clocksource/timer-stm32.o
drivers/clocksource/timer-stm32.c:38:28: error: field 'evtdev' has incomplete type
drivers/clocksource/timer-stm32.c:44:19: warning: 'enum clock_event_mode' declared inside parameter list
drivers/clocksource/timer-stm32.c:44:19: warning: its scope is only this definition or declaration, which is probably not what you want
drivers/clocksource/timer-stm32.c:43:62: error: parameter 1 ('mode') has incomplete type
drivers/clocksource/timer-stm32.c:43:13: error: function declaration isn't a prototype
drivers/clocksource/timer-stm32.c: In function 'stm32_clock_event_set_mode':
drivers/clocksource/timer-stm32.c:47:3: error: type defaults to 'int' in declaration of '__mptr'
drivers/clocksource/timer-stm32.c:47:3: warning: initialization from incompatible pointer type
drivers/clocksource/timer-stm32.c:51:7: error: 'CLOCK_EVT_MODE_PERIODIC' undeclared (first use in this function)
drivers/clocksource/timer-stm32.c:51:7: note: each undeclared identifier is reported only once for each function it appears in
drivers/clocksource/timer-stm32.c:56:7: error: 'CLOCK_EVT_MODE_ONESHOT' undeclared (first use in this function)

Tighten up the dependencies to limit where it gets built by copying
the style of the Kconfig line for CLKSRC_EFM32 a few lines above.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: http://lkml.kernel.org/r/1434841352-24300-1-git-send-email-paul.gortmaker@windriver.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>

After the cleanup on imx timer driver, now it's ready to be moved into
drivers/clocksource/.  Let's do it.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

STM32 MCUs feature 16 and 32 bits general purpose timers with prescalers.
The drivers detects whether the time is 16 or 32 bits, and applies a
1024 prescaler value if it is 16 bits.
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Tested-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMaxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

This patch adds clocksource support for ARMv7-M's System timer,
also known as SysTick.
Tested-by: NChanwoo Choi <cw00.choi@samsung.com>
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NMaxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Add support for using the NXP LPC timer as clocksource and clock
event. These timers are present on many NXP devices including
LPC32xx, LPC17xx, LPC18xx and LPC43xx.

The timer has a 32-bit timer counter register with a programmable
32-bit prescaler. It supports up to 4 compare match values with
interrupt generation and reset/stop timer counter action.
Signed-off-by: NJoachim Eastwood <manabian@gmail.com>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: NEzequiel Garcia <ezequiel@vanguardiasur.com.ar>
Acked-by: NArnd Bergmann <arnd@arndb.de>

Commit 5261ef2ea836 ("ARM: 8366/1: move Dual-Timer SP804 driver to
drivers/clocksource") moved SP804 to drivers/clocksource resulting in
it being selectable on platforms/architectures without the config
GENERIC_SCHED_CLOCK enabled. Due to that, it results in the following
build failure(e.g. x86_64 allmodconfig)

drivers/built-in.o: In function `__sp804_clocksource_and_sched_clock_init':
(.init.text+0x1a0e7): undefined reference to `sched_clock_register'

This patch fixes the build by making ARM_TIMER_SP804 depend on
GENERIC_SCHED_CLOCK

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Reported-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The ARM Dual-Timer SP804 module is peripheral found not only on ARM32
platforms but also on ARM64 platforms.

This patch moves the driver out of arch/arm to driver/clocksource
so that it can be used on ARM64 platforms also.

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Olof Johansson <olof@lixom.net>
Acked-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Enforce MFD_SYSCON selection as the driver needs it. Else, it will still
compile with some warning about X1, x2 or sr being used uninitialized.
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

GENERIC_SCHED_CLOCK can be selected by architectures other than ARM. The
current dependencies of CLKSRC_VERSATILE make it possible that other
architectures will have CLKSRC_VERSATILE available in configuration once
they select GENERIC_SCHED_CLOCK, whereas this clock source should be solely
available to ARM in reality.

This patch adds one more dependency to CLKSRC_VERSATILE to fix the issue.
Signed-off-by: NDeng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Reported-by: NMaciej W. Rozycki <macro@linux-mips.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: LKML <linux-kernel@vger.kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9476/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Fix !CONFIG_HAS_IOMEM related build failures in three clocksource drivers.

The build failures have the pattern of:

  drivers/clocksource/sh_cmt.c: In function ‘sh_cmt_map_memory’: drivers/clocksource/sh_cmt.c:920:2:
  error: implicit declaration of function ‘ioremap_nocache’ [-Werror=implicit-function-declaration]   cmt->mapbase = ioremap_nocache(mem->start, resource_size(mem));
Signed-off-by: NRichard Weinberger <richard@nod.at>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Cc: maxime.ripard@free-electrons.com
Link: http://lkml.kernel.org/r/1427362029-6511-1-git-send-email-daniel.lezcano@linaro.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>

Import at91rm9200_time.c from mach-at91 as timer-atmel-st.c. Further cleanup is
required to get rid of the mach-at91 headers.
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>