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path: root/drivers/clocksource/timer-sp804.c
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2016-06-28clocksources: Switch back to the clksrc tableDaniel Lezcano1-2/+2
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>
2016-06-28clocksource/drivers/sp804: Convert init function to return errorDaniel Lezcano1-31/+59
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>
2015-08-10clockevents/drivers/timer-sp804: Migrate to new 'set-state' interfaceViresh Kumar1-27/+27
Migrate timer-sp 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. There are few more changes worth noticing: - The clockevent device was disabled by writing: 'TIMER_CTRL_32BIT | TIMER_CTRL_IE' to ctrl register earlier. i.e. by un-setting the TIMER_CTRL_ENABLE bit. Its done by writing zero now and should have the same effect. - For shutdown and resume we were writing the same value twice to the register (to disable the timer), which is fixed now. - Switching to oneshot mode was divided into two parts earlier: - Firstly set_mode() was writing: 'TIMER_CTRL_32BIT | TIMER_CTRL_IE | TIMER_CTRL_ONESHOT' to ctrl register (device not enabled yet) - Then sp804_set_next_event() was enabling the device by writing 'readl(ctrl) | TIMER_CTRL_ENABLE' to the ctrl register. This was unnecessarily complicated. - Change this to: Stop device on set_state_oneshot and configure it in sp804_set_next_event(). Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Olof Johansson <olof@lixom.net> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-06-02ARM: 8366/1: move Dual-Timer SP804 driver to drivers/clocksourceSudeep Holla1-0/+310
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: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>