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linux/drivers/clocksource/timer-tegra.c

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-29 07:17:56 -07:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
ARM: tegra: enhance timer.c to get IO address from device tree Modify Tegra's timer code to parse the IO address from device tree, hence removing the dependency on <mach/iomap.h>. This will allow the driver to be moved to drivers/clocksource/. Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-10-23 11:40:25 -06:00
ARM: tegra: enhance timer.c to get IRQ info from device tree Modify Tegra's timer code to parse the Tegra timer IRQ from device tree, and to instantiate the TWD from device tree, rather than relying on hard- coded values from <mach/irqs.h>. Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-09-19 13:13:33 -06:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
sched_clock: Make ARM's sched_clock generic for all architectures Nothing about the sched_clock implementation in the ARM port is specific to the architecture. Generalize the code so that other architectures can use it by selecting GENERIC_SCHED_CLOCK. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> [jstultz: Merge minor collisions with other patches in my tree] Signed-off-by: John Stultz <john.stultz@linaro.org>
2013-06-01 23:39:40 -07:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
ARM: tegra: timer: Add idle and suspend support to timers Implement read_persistent_clock by reading the Tegra RTC registers that stay running during suspend. Save and restore the timer configuration register in suspend. Signed-off-by: Colin Cross <ccross@android.com>
2010-11-28 16:26:19 -08:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Unify timer code Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:40 +03:00
clocksource/drivers/tegra: Support per-CPU timers on all Tegra's Assign TMR1-4 per-CPU core on 32bit Tegra's in a way it is done for Tegra210. In a result each core can handle its own timer events, less code is unique to ARM64 and Tegra's clock events driver now has higher rating on all Tegra's, replacing the ARM's TWD timer which isn't very accurate due to the clock rate jitter caused by CPU frequency scaling. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:39 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add verbose definition for 1MHz constant Convert all 1MHz literals to a verbose constant for better readability. Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:55 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
ARM: tegra: enhance timer.c to get IO address from device tree Modify Tegra's timer code to parse the IO address from device tree, hence removing the dependency on <mach/iomap.h>. This will allow the driver to be moved to drivers/clocksource/. Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-10-23 11:40:25 -06:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Cycles can't be 0 Tegra's timer uses n+1 scheme for the counter, i.e. timer will fire after one tick if 0 is loaded. The minimum and maximum numbers of oneshot ticks are defined by clockevents_config_and_register(min, max) invocation and the min value is set to 1 tick. Hence "cycles" value can't ever be 0, unless it's a bug in clocksource core. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:57 +03:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clockevents/drivers/tegra20: Migrate to new 'set-state' interface Migrate tegra20 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: Thierry Reding <treding@nvidia.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-07-03 14:24:35 +05:30
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clockevents/drivers/tegra20: Migrate to new 'set-state' interface Migrate tegra20 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: Thierry Reding <treding@nvidia.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-07-03 14:24:35 +05:30
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Set and use timer's period The of_clk structure has a period field that is set up initially by timer_of_clk_init(), that period value need to be adjusted for a case of TIMER1-9 that are running at a fixed rate that doesn't match the clock's rate. Note that the period value is currently used only by some of the clocksource drivers internally and hence this is just a minor cleanup change that doesn't fix anything. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:53 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Set and use timer's period The of_clk structure has a period field that is set up initially by timer_of_clk_init(), that period value need to be adjusted for a case of TIMER1-9 that are running at a fixed rate that doesn't match the clock's rate. Note that the period value is currently used only by some of the clocksource drivers internally and hence this is just a minor cleanup change that doesn't fix anything. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:53 +03:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
clockevents/drivers/tegra20: Migrate to new 'set-state' interface Migrate tegra20 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: Thierry Reding <treding@nvidia.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-07-03 14:24:35 +05:30
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Drop unneeded typecasting in one place There is no need to cast void because kernel allows to do that without a warning message from a compiler. Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:54 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
clocksource/drivers/tegra: Reset hardware state on init Reset timer's hardware state to ensure that initially it is in a predictable state. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:41 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Set up maximum-ticks limit properly Tegra's timer has 29 bits for the counter and for the "load" register which sets counter to a load-value. The counter's value is lower than the actual value by 1 because it starts to decrement after one tick, hence the maximum number of ticks that hardware can handle equals to 29 bits + 1. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:58 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Set up maximum-ticks limit properly Tegra's timer has 29 bits for the counter and for the "load" register which sets counter to a load-value. The counter's value is lower than the actual value by 1 because it starts to decrement after one tick, hence the maximum number of ticks that hardware can handle equals to 29 bits + 1. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:58 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource: tegra: Switch to sched_clock_register() The 32 bit sched_clock interface now supports 64 bits. Upgrade to the 64 bit function to allow us to remove the 32 bit registration interface. Cc: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: John Stultz <john.stultz@linaro.org>
2013-07-18 16:21:26 -07:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Unify timer code Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:40 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Unify timer code Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:40 +03:00
clocksource/drivers/tegra: Add verbose definition for 1MHz constant Convert all 1MHz literals to a verbose constant for better readability. Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:55 +03:00
clocksource/drivers/tegra: Unify timer code Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:40 +03:00
clocksource/drivers/tegra: Rework for compensation of suspend time Since the clocksource framework has the support for suspend time compensation. Re-work the driver to use that, so we can reduce the duplicate code. Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-04-02 11:02:34 +08:00
ARM: tegra: timer: Add idle and suspend support to timers Implement read_persistent_clock by reading the Tegra RTC registers that stay running during suspend. Save and restore the timer configuration register in suspend. Signed-off-by: Colin Cross <ccross@android.com>
2010-11-28 16:26:19 -08:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
ARM: tegra: timer: Add idle and suspend support to timers Implement read_persistent_clock by reading the Tegra RTC registers that stay running during suspend. Save and restore the timer configuration register in suspend. Signed-off-by: Colin Cross <ccross@android.com>
2010-11-28 16:26:19 -08:00
clocksource/drivers/tegra: Rework for compensation of suspend time Since the clocksource framework has the support for suspend time compensation. Re-work the driver to use that, so we can reduce the duplicate code. Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-04-02 11:02:34 +08:00
ARM: tegra: timer: Add idle and suspend support to timers Implement read_persistent_clock by reading the Tegra RTC registers that stay running during suspend. Save and restore the timer configuration register in suspend. Signed-off-by: Colin Cross <ccross@android.com>
2010-11-28 16:26:19 -08:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
ARM: tegra: timer: Add idle and suspend support to timers Implement read_persistent_clock by reading the Tegra RTC registers that stay running during suspend. Save and restore the timer configuration register in suspend. Signed-off-by: Colin Cross <ccross@android.com>
2010-11-28 16:26:19 -08:00
clocksource/drivers/tegra: Rework for compensation of suspend time Since the clocksource framework has the support for suspend time compensation. Re-work the driver to use that, so we can reduce the duplicate code. Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-04-02 11:02:34 +08:00
clocksource/drivers/tegra: Provide y2038-safe tegra_read_persistent_clock() replacement As part of addressing "y2038 problem" for in-kernel uses, this patch adds the y2038-safe tegra_read_persistent_clock64() using timespec64. Because we rely on some subsequent changes to convert arm multiarch support, tegra_read_persistent_clock() will be removed then. Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Acked-by: Thierry Reding <treding@nvidia.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1427945681-29972-6-git-send-email-john.stultz@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-01 20:34:25 -07:00
clocksource/drivers/tegra: Unify timer code Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:40 +03:00
clocksource/drivers/tegra: Remove duplicated use of per_cpu_ptr It was left unnoticed by accident, which means that the code could be cleaned up a tad more. Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:52 +03:00
clocksource/drivers/tegra: Add verbose definition for 1MHz constant Convert all 1MHz literals to a verbose constant for better readability. Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:55 +03:00
clocksource/drivers/tegra: Remove duplicated use of per_cpu_ptr It was left unnoticed by accident, which means that the code could be cleaned up a tad more. Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:52 +03:00
clocksource/drivers/tegra: Lower clocksource rating for some Tegra's Arch-timer is more preferable for a range of Tegra SoC generations as it has higher precision and is not affect by any kind of problems. Pointed-out-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:47 +03:00
clocksource: tegra: Use us counter as delay timer All Tegra SoCs have a freerunning microsecond counter which can be used as a delay timer. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2014-06-12 18:58:29 +03:00
clocksource/drivers/tegra: Support per-CPU timers on all Tegra's Assign TMR1-4 per-CPU core on 32bit Tegra's in a way it is done for Tegra210. In a result each core can handle its own timer events, less code is unique to ARM64 and Tegra's clock events driver now has higher rating on all Tegra's, replacing the ARM's TWD timer which isn't very accurate due to the clock rate jitter caused by CPU frequency scaling. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:39 +03:00
clocksource: tegra: Use us counter as delay timer All Tegra SoCs have a freerunning microsecond counter which can be used as a delay timer. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2014-06-12 18:58:29 +03:00
clocksource/drivers/tegra: Support per-CPU timers on all Tegra's Assign TMR1-4 per-CPU core on 32bit Tegra's in a way it is done for Tegra210. In a result each core can handle its own timer events, less code is unique to ARM64 and Tegra's clock events driver now has higher rating on all Tegra's, replacing the ARM's TWD timer which isn't very accurate due to the clock rate jitter caused by CPU frequency scaling. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:39 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers/tegra: Replace readl/writel with relaxed versions The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:42 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Support per-CPU timers on all Tegra's Assign TMR1-4 per-CPU core on 32bit Tegra's in a way it is done for Tegra210. In a result each core can handle its own timer events, less code is unique to ARM64 and Tegra's clock events driver now has higher rating on all Tegra's, replacing the ARM's TWD timer which isn't very accurate due to the clock rate jitter caused by CPU frequency scaling. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:39 +03:00
clocksource/drivers/tegra: Remove duplicated use of per_cpu_ptr It was left unnoticed by accident, which means that the code could be cleaned up a tad more. Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:52 +03:00
clocksource/drivers/tegra: Unify timer code Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:40 +03:00
clocksource/drivers/tegra: Remove duplicated use of per_cpu_ptr It was left unnoticed by accident, which means that the code could be cleaned up a tad more. Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:52 +03:00
clocksource/drivers/tegra: Support per-CPU timers on all Tegra's Assign TMR1-4 per-CPU core on 32bit Tegra's in a way it is done for Tegra210. In a result each core can handle its own timer events, less code is unique to ARM64 and Tegra's clock events driver now has higher rating on all Tegra's, replacing the ARM's TWD timer which isn't very accurate due to the clock rate jitter caused by CPU frequency scaling. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:39 +03:00
clocksource/drivers/tegra: Remove duplicated use of per_cpu_ptr It was left unnoticed by accident, which means that the code could be cleaned up a tad more. Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:52 +03:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Release all IRQ's on request_irq() error Release all requested IRQ's on the request error to properly clean up allocated resources. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:43 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Remove duplicated use of per_cpu_ptr It was left unnoticed by accident, which means that the code could be cleaned up a tad more. Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:52 +03:00
clocksource/drivers/tegra: Set and use timer's period The of_clk structure has a period field that is set up initially by timer_of_clk_init(), that period value need to be adjusted for a case of TIMER1-9 that are running at a fixed rate that doesn't match the clock's rate. Note that the period value is currently used only by some of the clocksource drivers internally and hence this is just a minor cleanup change that doesn't fix anything. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:53 +03:00
clocksource/drivers/tegra: Remove duplicated use of per_cpu_ptr It was left unnoticed by accident, which means that the code could be cleaned up a tad more. Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:52 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Remove duplicated use of per_cpu_ptr It was left unnoticed by accident, which means that the code could be cleaned up a tad more. Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:52 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
clocksource/drivers/tegra: Release all IRQ's on request_irq() error Release all requested IRQ's on the request error to properly clean up allocated resources. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:43 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Add verbose definition for 1MHz constant Convert all 1MHz literals to a verbose constant for better readability. Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:55 +03:00
clocksource/drivers/tegra: Unify timer code Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:40 +03:00
clocksource/drivers/tegra: Add verbose definition for 1MHz constant Convert all 1MHz literals to a verbose constant for better readability. Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:55 +03:00
clocksource/drivers/tegra: Unify timer code Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:40 +03:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Restore base address before cleanup We're adjusting the timer's base for each per-CPU timer to point to the actual start of the timer since device-tree defines a compound registers range that includes all of the timers. In this case the original base need to be restore before calling iounmap to unmap the proper address. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-18 17:03:56 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Support per-CPU timers on all Tegra's Assign TMR1-4 per-CPU core on 32bit Tegra's in a way it is done for Tegra210. In a result each core can handle its own timer events, less code is unique to ARM64 and Tegra's clock events driver now has higher rating on all Tegra's, replacing the ARM's TWD timer which isn't very accurate due to the clock rate jitter caused by CPU frequency scaling. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:39 +03:00
clocksource/drivers/tegra: Add Tegra210 timer support Add support for the Tegra210 timer that runs at oscillator clock (TMR10-TMR13). We need these timers to work as clock event device and to replace the ARMv8 architected timer due to it can't survive across the power cycle of the CPU core or CPUPORESET signal. So it can't be a wake-up source when CPU suspends in power down state. Also convert the original driver to use timer-of API. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-02-21 15:21:44 +08:00
clocksource/drivers/tegra: Lower clocksource rating for some Tegra's Arch-timer is more preferable for a range of Tegra SoC generations as it has higher precision and is not affect by any kind of problems. Pointed-out-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:47 +03:00
clocksource/drivers/tegra: Support per-CPU timers on all Tegra's Assign TMR1-4 per-CPU core on 32bit Tegra's in a way it is done for Tegra210. In a result each core can handle its own timer events, less code is unique to ARM64 and Tegra's clock events driver now has higher rating on all Tegra's, replacing the ARM's TWD timer which isn't very accurate due to the clock rate jitter caused by CPU frequency scaling. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:39 +03:00
clocksource/drivers/tegra: Unify timer code Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:40 +03:00
clocksource/drivers/tegra: Support per-CPU timers on all Tegra's Assign TMR1-4 per-CPU core on 32bit Tegra's in a way it is done for Tegra210. In a result each core can handle its own timer events, less code is unique to ARM64 and Tegra's clock events driver now has higher rating on all Tegra's, replacing the ARM's TWD timer which isn't very accurate due to the clock rate jitter caused by CPU frequency scaling. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:39 +03:00
clocksource/drivers/tegra: Lower clocksource rating for some Tegra's Arch-timer is more preferable for a range of Tegra SoC generations as it has higher precision and is not affect by any kind of problems. Pointed-out-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:47 +03:00
clocksource/drivers/tegra20: Convert init function to return error 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>
2016-06-06 17:59:43 +02:00
clocksource/drivers/tegra: Unify timer code Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:40 +03:00
clocksource/drivers/tegra20: Convert init function to return error 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>
2016-06-06 17:59:43 +02:00
clocksource: tegra20: use the device_node pointer passed to init We've already matched the node, so use the node pointer passed in. The rtc init was intermingled with the timer init, so split this out to a separate init function. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2013-02-07 11:36:23 -06:00
clocksource/drivers/tegra: Rework for compensation of suspend time Since the clocksource framework has the support for suspend time compensation. Re-work the driver to use that, so we can reduce the duplicate code. Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-04-02 11:02:34 +08:00
clocksource: tegra20: use the device_node pointer passed to init We've already matched the node, so use the node pointer passed in. The rtc init was intermingled with the timer init, so split this out to a separate init function. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2013-02-07 11:36:23 -06:00
clocksource/drivers/tegra: Rework for compensation of suspend time Since the clocksource framework has the support for suspend time compensation. Re-work the driver to use that, so we can reduce the duplicate code. Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-04-02 11:02:34 +08:00
clocksource: tegra20: use the device_node pointer passed to init We've already matched the node, so use the node pointer passed in. The rtc init was intermingled with the timer init, so split this out to a separate init function. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2013-02-07 11:36:23 -06:00
clocksource/drivers/tegra: Minor code clean up Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2019-06-03 21:59:44 +03:00
[ARM] tegra: Add timer support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h fixes from Gary King: - remove extra (and incorrect) irq definitions - use timer 3 instead of timer 1 for compatibility with other drivers - fix typo that disabled oneshot mode v3: - Implement sched_clock - Fix checkpatch issues fixes from Gary King: - Fix incorrect cycles calculation - Fix min_delta_ns assignment fixes from Linus Walleij: - use calc_mult_shift() instead of hard coding values Signed-off-by: Colin Cross <ccross@android.com>
2010-01-28 16:41:42 -08:00
clocksource/drivers: Rename CLOCKSOURCE_OF_DECLARE to TIMER_OF_DECLARE The CLOCKSOURCE_OF_DECLARE macro is used widely for the timers to declare the clocksource at early stage. However, this macro is also used to initialize the clockevent if any, or the clockevent only. It was originally suggested to declare another macro to initialize a clockevent, so in order to separate the two entities even they belong to the same IP. This was not accepted because of the impact on the DT where splitting a clocksource/clockevent definition does not make sense as it is a Linux concept not a hardware description. On the other side, the clocksource has not interrupt declared while the clockevent has, so it is easy from the driver to know if the description is for a clockevent or a clocksource, IOW it could be implemented at the driver level. So instead of dealing with a named clocksource macro, let's use a more generic one: TIMER_OF_DECLARE. The patch has not functional changes. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-26 16:56:11 +02:00