Adapted driver to clock_control changes (usage of onoff manager).
Since timer is permanenty requesting the clock, it is using API
dedicated for that: z_nrf_clock_control_lf_on().
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
When checking the absolute value of cycles set to the comparator
use the MAX_CYCLES instead of MAX_TICKS.
The commit changes function names and comments to make it clear
where ticks (system ticks) and where RTC cycles are used.
Fixes#26701
Signed-off-by: Pawel Dunaj <pawel.dunaj@nordicsemi.no>
K_FOREVER/INT_MAX number of ticks needs delay cycles value of
maximum order and exceeds 'int32' range.
The typecast to 'int32' results in wrongly evaluating the value
as less than 'MIN_DELAY' and chooses 'MIN_DELAY' over the actual
delay cycles.
Cap the 'MAX_TICKS' to INT32_MAX.
fixes: #26632
Signed-off-by: Sandeep Tripathy <sandeep.tripathy@broadcom.com>
The front side bus interrupt delivery feature is a somewhat obscure
part of PC history (in some sense a presaging of MSI interrupts) that
we don't use.
But it's part of the spec, works on hardware, has precedence over the
"legacy" interrupt routing feature we do use, and can be legally
enabled by firmware.
Disable at init time.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
Avoid reading LPTIM counter four times instead of three when second
read doesn't give same value. Use common code, avoid volatile for
local vars.
Signed-off-by: Giancarlo Stasi <giancarlo.stasi.co@gmail.com>
The HPET timer was hard-coded to support only edge triggering
interrupts. This adds the necessary bits to enable level
triggering for the timer.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
When setting a timeout K_TICKS_FOREVER,the lptimer clock is stopped
(no reset of the lptim).
Then is the lptim possibly re-started when another source asks for.
The lptim clock must then be re-started and continue counting.
This is the case when wakeup from sleep mode, for example.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
The LPTIM driver is supposed to be only available when the SoC is
allowed to enter power sleep mode, as described in commit f30f5fff72
("drivers: timer: lptim is [EXPERIMENTAL] for stm32 soc series only").
For that it should depends on SYS_POWER_MANAGEMENT (which gates the
SYS_POWER_SLEEP_STATES and SYS_POWER_DEEP_SLEEP_STATES options) instead
of DEVICE_POWER_MANAGEMENT.
Fixes#25989
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Some ticks are counted additionally when the autoreload
interrupts were too close together.
This patch improve the counts of the clock cycle.
lptim_fired worked badly in particular because the flag ARRM
was not raised when the interrupt was forced.
Signed-off-by: Julien D'Ascenzio <julien.dascenzio@paratronic.fr>
If ticks is K_TICKS_FOREVER the register autoreload isn't set.
So, on the next call to the z_clock_set_timeout function
the wait for the flag ARROK will be infinite.
Signed-off-by: Julien D'Ascenzio <julien.dascenzio@paratronic.fr>
We don't need to reset backup domain to set LSE clock source.
It's dangerous to reset backup domain, it removes:
- RTC configuration
- backup registers
- RCC Backup domain control register
Signed-off-by: Julien D'Ascenzio <julien.dascenzio@paratronic.fr>
Activation of the LPTIMER is valid for SLEEP MODE only
The choice of the lptim clock source is STM32_LPTIM_CLOCK
set the LSE in first position to have as default value
Signed-off-by: Francois Ramu <francois.ramu@st.com>
based on PR#25412
Some kernel tests use `CONFIG_TICKLESS_KERNEL=n` with
`CONFIG_SYS_CLOCK_TICKS_PER_SEC=1` to detect when a test runs longer
than 1 second. These tests break if a tick is announced every time a
timeout occurs. Only announce if the measured duration since the last
tick is at least the duration of a tick.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
set the min and max values of the given ticks from 0
to LPTIM_TIMEBASE which is the full register value
In case the timeout is FOREVER, then lptimer is stopped
Signed-off-by: Francois Ramu <francois.ramu@st.com>
The current value of the counter must not be added to the accumulator.
It will be added when calling z_timer_cycle_get_32.
Signed-off-by: Julien D'Ascenzio <julien.dascenzio@paratronic.fr>
When the tickless kernel isn't used, we don't want to wait for ARROK.
This wait can be endless.
Signed-off-by: Julien D'Ascenzio <julien.dascenzio@paratronic.fr>
This reimplements z_timer_cycle_get_32() so it works
when IRQs are locked and solves the hung
k_busy_wait() problem.
Fixes#23622.
Signed-off-by: Jakub Cebulski <jcebulski@internships.antmicro.com>
Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
Signed-off-by: Mateusz Holenko <mholenko@antmicro.com>
Co-authored-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
The weak implementation returns 0 for all operations without doing
anything, which incorrectly suggests that an operation like
device_get_power_state() returned an accurate description of the
system clock power state. Return -ENOTSUP instead.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
If timeout is being overwrite exactly when previous one is expiring
then hardware event was cleared correctly but interrupt was already
triggered. Interrupt routine was assuming that compare event is set
and proceed with that assumption. However, in that corner case when
compare event was overwritten and event was cleared, that was not the
case.
As the outcome, timeout could be triggered prematurely. Fixed by
clearing pending interrupt after handling previous compare value.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
* still need to clear IP bit in timer irq handler
* last_time should be aligned to ticks, old code will miss some
cycles which are about (curret_time - last_time) % CYC_PER_TICK
* in timeout set, shorten the delay needed when tick is 0, this
will improve the response of timer irq
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
the pulse triggered timer irq doesn't work for all targets. In
iotdk, we found the clear of IP bit will clear int request
when elapsed called in thread context. So come back to level
triggered way which is supported in all targets, and use the sw
triggered irq to remember the irq request which may be cleared
in non timer int handler.
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
* rename overflow_cyc to overflow_cycles for better understanding
* use MIN macro to replace if .. else ..
* typo fix in comments
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
This adds the calls to read_timer_{start,end}_of_tick_handler()
to mark the start and end of ISR which will be used to display
the time spent in ISR with benchmarking tests.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Some kernel tests use `CONFIG_TICKLESS_KERNEL=n` with
`CONFIG_SYS_CLOCK_TICKS_PER_SEC=1` to detect when a test runs longer
than 1 second. These tests break if a tick is announced every time a
timeout occurs. Only announce if the measured duration since the last
tick is at least the duration of a tick.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Use device tree provided configurations for arm architecture timer
PPIs.
This fixes issue of timer ppi not working on most hardware where
edge-triggered PPI are not supported.
Signed-off-by: Sandeep Tripathy <sandeep.tripathy@broadcom.com>
INLINE is a very common macro, just like MAX or MIN.
Defining it always can easily collide with libraries or
application headers.
And option would be to add a ifdef guard around it,
But it was used in only 1 place in Zephyr, instead
of keeping it just for that, remove it.
Signed-off-by: Alberto Escolar Piedras <alpi@oticon.com>
referring the ARM's Systick driver, we did the following improvements:
* use 31 bits of 32-bit counter to avoid the rare but possible
overflow of elapsed(). If 32 bits val are used, elpased() may
return a wrong value. then wrong HW cycles.
* two ways to update the correct cycles
- through systick timer irq
- when systick timer irq cann't be handled because of irq
locked/disabled, call z_timer_cycle_get_32->elapsed to update
the correct cylces. no more than one counter-wrap is allowed.
* if elapsed() is not called too long (more than one counter-wrap) from
systick tiemr irq or from z_timer_cycle_get_32. The lost of HW cycles
is unavoidable.
* some detailed discussion can be found in #24332
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
Use NODELABEL macros rather than DT_INST as this driver is so far
limited to support of LPTIM1 instance.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
User reported a flaw in the current algorithm which fails when Zero
Latency Interrupts (ZLI) are used. Ported algorithm from
counter_nrfx_rtc.c which covers all cases. Algorithm is lockless so
no distinction for ZLI is needed.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
Replace various drivers and soc code that use DT_CAVS_ICTL_BASE_ADDR
with DT_REG_ADDR(DT_NODELABEL(cavs0)).
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
In the ARM Cortex-M architecture implementation, the concepts of
"exceptions" and "interrupts" are interchangeable; whereas, in the
Cortex-A/-R architecture implementation, they are considered separate
and therefore handled differently (i.e. `z_arm_exc_exit` cannot be used
to exit an "interrupt").
This commit fixes all `z_arm_exc_exit` usages in the interrupt handlers
to use `z_arm_int_exit`.
NOTE: In terms of the ARM AArch32 Cortex-A and Cortex-R architecture
implementations, the "exceptions" refer to the "Undefined
Instruction (UNDEF)" and "Prefetch/Data Abort (PABT/DABT)"
exceptions, while "interrupts" refer to the "Interrupt (IRQ)",
"Fast Interrupt (FIQ)" and "Software Interrupt/Supervisor Call
(SWI/SVC)".
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
clock-generator is a normal property. To access it we should use
DT_INST_PROP(0, clock_generator) and not DT_INST_CLOCKS_CELL().
Fixes: #24399
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
sys_clock_disable now is only called in sys_reboot.
This API is outdated, no need to implement it and
there is a weak version.
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
Commit 7832738ae9 ("kernel/timeout: Make timeout arguments an opaque
type") changed the forever value for timer drivers to K_TICKS_FOREVER
from K_FOREVER.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This adds the calls to read_timer_{start,end}_of_tick_handler()
to mark the start and end of ISR which will be used to display
the time spent in ISR with benchmarking tests.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Add a k_timeout_t type, and use it everywhere that kernel API
functions were accepting a millisecond timeout argument. Instead of
forcing milliseconds everywhere (which are often not integrally
representable as system ticks), do the conversion to ticks at the
point where the timeout is created. This avoids an extra unit
conversion in some application code, and allows us to express the
timeout in units other than milliseconds to achieve greater precision.
The existing K_MSEC() et. al. macros now return initializers for a
k_timeout_t.
The K_NO_WAIT and K_FOREVER constants have now become k_timeout_t
values, which means they cannot be operated on as integers.
Applications which have their own APIs that need to inspect these
vs. user-provided timeouts can now use a K_TIMEOUT_EQ() predicate to
test for equality.
Timer drivers, which receive an integer tick count in ther
z_clock_set_timeout() functions, now use the integer-valued
K_TICKS_FOREVER constant instead of K_FOREVER.
For the initial release, to preserve source compatibility, a
CONFIG_LEGACY_TIMEOUT_API kconfig is provided. When true, the
k_timeout_t will remain a compatible 32 bit value that will work with
any legacy Zephyr application.
Some subsystems present timeout (or timeout-like) values to their own
users as APIs that would re-use the kernel's own constants and
conventions. These will require some minor design work to adapt to
the new scheme (in most cases just using k_timeout_t directly in their
own API), and they have not been changed in this patch, instead
selecting CONFIG_LEGACY_TIMEOUT_API via kconfig. These subsystems
include: CAN Bus, the Microbit display driver, I2S, LoRa modem
drivers, the UART Async API, Video hardware drivers, the console
subsystem, and the network buffer abstraction.
k_sleep() now takes a k_timeout_t argument, with a k_msleep() variant
provided that works identically to the original API.
Most of the changes here are just type/configuration management and
documentation, but there are logic changes in mempool, where a loop
that used a timeout numerically has been reworked using a new
z_timeout_end_calc() predicate. Also in queue.c, a (when POLL was
enabled) a similar loop was needlessly used to try to retry the
k_poll() call after a spurious failure. But k_poll() does not fail
spuriously, so the loop was removed.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
Replace all occurences of BUILD_ASSERT_MSG() with BUILD_ASSERT()
as a result of merging BUILD_ASSERT() and BUILD_ASSERT_MSG().
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Convert older DT_INST_ macro use in litex drivers to the new
include/devicetree.h DT_INST macro APIs.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Michael Hope
