Add support for using the sub second registers. It allows reading and
setting alarm with the sub second tick resolution.
The RTC module is configured to get as high frequency as possible, which
equals the source clock (RTCCLK) divided by 2. To get such frequency,
the asynchronous prescaler is set to 1.
According to RM, setting the asynchronous prescaler to a high value
minimize consumption, so the change increase the power consumption.
Use a config to enable the sub second support.
Signed-off-by: Dawid Niedzwiecki <dawidn@google.com>
RTC drivers uses only seconds, so transition to microseconds is
necessary.
Change way of calculation tick<->time to avoid unnecessary
conversations.
Signed-off-by: Dawid Niedzwiecki <dawidn@google.com>
Synchronize reading two separate registers. In some edge cases the read
registers could point different dates.
Signed-off-by: Dawid Niedzwiecki <dawidn@google.com>
The config values have been hardcoded as magic values. Introduce
universal calculation based on the DTS entries.
Signed-off-by: Dawid Niedzwiecki <dawidn@google.com>
The DT_INST_CLOCKS_CELL macro takes as the first argument the device
instance and not the cell index. This change correctly gets the second
index of the first device as intended.
Signed-off-by: Brett Witherspoon <brett@witherspoon.engineering>
Add the stm32h5 serie to the stm32 RTC counter driver
EXTI Line is 17 (for stm32h50x or non-secure stm32h56x/h57x).
The drivers must Enable access to the BackUp Domain.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
The STM32C0-series does not have a backup domain, this patch
enables us to extend this driver to the C0-series.
Signed-off-by: Benjamin Björnsson <benjamin.bjornsson@gmail.com>
Now that both RTC source clock Kconfig symbols are disabled by default,
we invert the ifdef so that in the absence of configuration we still
fall in the LSI configuration.
Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>
Change automated searching for files using "IRQ_CONNECT()" API not
including <zephyr/irq.h>.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Many device pointers are initialized at compile and never changed. This
means that the device pointer can be constified (immutable).
Automated using:
```
perl -i -pe 's/const struct device \*(?!const)(.*)= DEVICE/const struct
device *const $1= DEVICE/g' **/*.c
```
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
In order to bring consistency in-tree, migrate all drivers to the new
prefix <zephyr/...>. Note that the conversion has been scripted, refer
to #45388 for more details.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Stop using redundant DEV_DATA/DEV_CFG macros and use dev->data and
dev->config instead.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Refactors all of the counter drivers to use a shared driver class
initialization priority configuration, CONFIG_COUNTER_INIT_PRIORITY, to
allow configuring counter drivers separately from other devices. This is
similar to other driver classes like I2C and SPI.
The default is set to CONFIG_KERNEL_INIT_PRIORITY_DEVICE to preserve the
existing default initialization priority for most drivers. The
exceptions are the maxim_ds3231 and mcp7940n drivers which have a
dependency on a SPI driver and must therefore initialize later than the
default device priority.
Signed-off-by: Maureen Helm <maureen.helm@intel.com>
To allow transition to device tree based clock configuration on
stm32 targets, rework clock_control driver to use intermediate
STM32_ macros initially defined as the equivalent Kconfig macros
for now.
Propagate the change in all code using these macros.
The reason to introduce these new macros instead of configuring
Kconfig flags using dt kconfigfunctions is that we'll need
to be able to inform users that Kconfig flags are deprecated
once the whole family conversion is done, to encourage
out of tree users to adopt this new configuration scheme.
Note: For now STM32H7 series and code is excluded.
This is the same for some series specific code such as
PLL mul/div for L0/L1 and XTRE prescaler on F1 series.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Remove support for counter_read and counter_get_max_relative_alarm as
they have been deprecated for at least 2 releases. As part of the
removal of counter_get_max_relative_alarm remove the code in all
counter drivers that implemented the API.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Convert from device_get_binding to DEVICE_DT_GET. In doing this we
no longer need the label in the devicetree node so we remove that.
Removed all __ASSERT_NO_MSG(clk) since we'll get a build error if
DEVICE_DT_GET cant be satisfied, and the clock control api's will
handle reporting if the device_is_ready.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
The calculated alarm time starts from 2000 but the gmtime_r needs as
input the time from epoch (1970). This causes the alarm time to be
miscalculated due to leap years, as 2000 is a leap year and 1970 is not.
To fix the issue, the 2000 timestamp can be added to the input time of
gmtime_r.
Fixes#32260
Signed-off-by: Antonis Sioutas <antonis.si510@gmail.com>
Convert counter drivers to use new DT variants of the DEVICE APIs.
DEVICE_AND_API_INIT -> DEVICE_DT_DEFINE
DEVICE_GET -> DEVICE_DT_GET
DEVICE_DECLARE -> DEVICE_DT_INST_DECLARE
etc..
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
mktime() was being used to convert from struct tm to time_t, but
Zephyr now has functions for that.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
time_t always measures as seconds since 1970-01-01T00:00:00Z. Fix a
comment that identified the wrong epoch year, and document what the
value of the offset means.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
1. clock: move the call for MSI hardware auto calibration enabling
before the control of MSI enable to ensure its execution in all
cases.
2. counter: add call for MSI hardware auto calibration enabling after
the LSE enabling and after possible backup domain reset that may
clear MSIPLLEN.
Signed-off-by: Giancarlo Stasi <giancarlo.stasi.co@gmail.com>
Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.
A coccinelle rule is used for this:
@r_const_dev_1
disable optional_qualifier
@
@@
-struct device *
+const struct device *
@r_const_dev_2
disable optional_qualifier
@
@@
-struct device * const
+const struct device *
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Allow the disabling of reseting of the backup domain. This gives
the possibility to keep the content of the 20 backup registers
and use them to store information that survives a reboot.
Signed-off-by: Erwin Rol <erwin@erwinrol.com>
In case of dualcore, STM32H7, STM32W and STM32MP1,
protect concurrent register write access with HSEM.
Done for following drivers:
clock_control, counter, flash, gpio, interrupt_controller
Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>
This patch set the EXTI line 17 as the RTC alarm pin
on the stm32f2x serie from STMicroelectronics.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
Add +1 tick to alarm in order to compensate the partially started tick.
Alarm will expire between requested ticks and ticks+1.
In case only 1 tick is requested, it will avoid that +1 Tick event
occurs before alarm setting is finished.
Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>
Convert older DT_INST_ macro use in STM32 drivers to the new
include/devicetree.h DT_INST macro APIs.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Convert driver to use DT_INST_ defines.
Removed DT_RTC_0 fixup macros but keep DT_RTC_NAME_0 as it is
still in use across RTC users.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Enable counter driver support for H7 series. Tested with H743ZI MCU
using samples/drivers/counter/alarm.
Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
