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* clocksource/drivers/timer-atmel-pit: Simplify IRQ handlerAlexandre Belloni2016-09-121-8/+3
| | | | | | | | | | Because the PIT is also a proper clocksource, the timekeeping code is already able to handle lost ticks. Reported-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* clocksource/drivers/timer-atmel-pit: Remove uselesss WARN_ON_ONCEAlexandre Belloni2016-09-121-6/+0
| | | | | | | | | IRQ handlers are running with IRQ disabled for a while, remove wrong comment and useless test. Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* clocksource/drivers/timer-atmel-pit: Drop at91sam926x_pit_common_initAlexandre Belloni2016-09-121-45/+34
| | | | | | | | | Merge at91sam926x_pit_common_init in at91sam926x_pit_dt_init as this is the only initialization method now. Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* clocksource/drivers/atmel-pit: Fix compilation errorDaniel Lezcano2016-08-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | The previous fix introduced a check against the ret variable which is not defined, hence producing a compilation error: linux/drivers/clocksource/timer-atmel-pit.c: In function ‘at91sam926x_pit_dt_init’: linux/drivers/clocksource/timer-atmel-pit.c:264:2: error: ‘ret’ undeclared (first use in this function) ret = clk_prepare_enable(data->mck); ^ linux/drivers/clocksource/timer-atmel-pit.c:264:2: note: each undeclared identifier is reported only once for each function it appears in Add the missing the variable 'ret'. Fixes: 504f34c9e45c "clocksource/drivers/atmel-pit: Convert init function to return error" Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: alexandre.belloni@free-electrons.com Cc: motobud@gmail.com Cc: realbright@lgcns.com Link: http://lkml.kernel.org/r/1472453043-24287-1-git-send-email-daniel.lezcano@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* clocksource/drivers/timer-atmel-pit: Enable mck clockAlexandre Belloni2016-08-261-0/+6
| | | | | | | | | | | | | | mck is needed to get the PIT working. Explicitly prepare_enable it instead of assuming it is enabled. This solves an issue where the system is freezing when the ETM/ETB drivers are enabled. Reported-by: Olivier Schonken <olivier.schonken@gmail.com> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* clocksources: Switch back to the clksrc tableDaniel Lezcano2016-06-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All the clocksource drivers's init function are now converted to return an error code. CLOCKSOURCE_OF_DECLARE is no longer used as well as the clksrc-of table. Let's convert back the names: - CLOCKSOURCE_OF_DECLARE_RET => CLOCKSOURCE_OF_DECLARE - clksrc-of-ret => clksrc-of Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> For exynos_mct and samsung_pwm_timer: Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> For arch/arc: Acked-by: Vineet Gupta <vgupta@synopsys.com> For mediatek driver: Acked-by: Matthias Brugger <matthias.bgg@gmail.com> For the Rockchip-part Acked-by: Heiko Stuebner <heiko@sntech.de> For STi : Acked-by: Patrice Chotard <patrice.chotard@st.com> For the mps2-timer.c and versatile.c changes: Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> For the OXNAS part : Acked-by: Neil Armstrong <narmstrong@baylibre.com> For LPC32xx driver: Acked-by: Sylvain Lemieux <slemieux.tyco@gmail.com> For Broadcom Kona timer change: Acked-by: Ray Jui <ray.jui@broadcom.com> For Sun4i and Sun5i: Acked-by: Chen-Yu Tsai <wens@csie.org> For Meson6: Acked-by: Carlo Caione <carlo@caione.org> For Keystone: Acked-by: Santosh Shilimkar <ssantosh@kernel.org> For NPS: Acked-by: Noam Camus <noamca@mellanox.com> For bcm2835: Acked-by: Eric Anholt <eric@anholt.net>
* clocksource/drivers/atmel-pit: Convert init function to return errorDaniel Lezcano2016-06-281-14/+29
| | | | | | | | | | | | | | | | | | | | The init functions do not return any error. They behave as the following: - panic, thus leading to a kernel crash while another timer may work and make the system boot up correctly or - print an error and let the caller unaware if the state of the system Change that by converting the init functions to return an error conforming to the CLOCKSOURCE_OF_RET prototype. Proper error handling (rollback, errno value) will be changed later case by case, thus this change just return back an error or success in the init function. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* clockevents/drivers/timer-atmel-pit: Fix typo in structure initializationDaniel Lezcano2015-08-101-2/+2
| | | | | Reported-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* clockevents/drivers/atmel: Migrate to new 'set-state' interfaceViresh Kumar2015-08-101-23/+18
| | | | | | | | | | | | | | | | Migrate atmel driver to the new 'set-state' interface provided by clockevents core, the earlier 'set-mode' interface is marked obsolete now. This also enables us to implement callbacks for new states of clockevent devices, for example: ONESHOT_STOPPED. Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* clocksource/drivers/at91: Fix IO endiannessBen Dooks2015-03-311-2/+2
| | | | | | | | | | | | | | | | | | | | | Fix the use of __raw IO accessor with the readl/writel_relaxed() versions to allow the code to be used on a system running in big endian mode. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Andrew Victor <linux@maxim.org.za> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Linux ARM Kernel <linux-arm-kernel@lists.infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: digetx@gmail.com Cc: hdegoede@redhat.com Cc: laurent.pinchart+renesas@ideasonboard.com Cc: maxime.ripard@free-electrons.com Cc: viresh.kumar@linaro.org Link: http://lkml.kernel.org/r/1427746633-9137-7-git-send-email-daniel.lezcano@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* ARM: at91/clocksource: remove !DT PIT initializationsArnd Bergmann2014-12-031-32/+0
| | | | | | | | | | | As AT91 !DT code is now removed, cleanup the PIT clocksource driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> [nicolas.ferre@atmel.com: split patch] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Boris BREZILLON <boris.brezillon@free-electrons.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
* ARM: at91: PIT: Move the driver to drivers/clocksourceMaxime Ripard2014-09-151-0/+296
Now that we don't depend on anyting in the mach-at91 directory, we can just move the driver to where it belongs. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Conflicts: arch/arm/mach-at91/Kconfig arch/arm/mach-at91/Makefile
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