Add the get_config API to the stm32 I2C driver.
It will return the value of the Clock Control register for i2C V1 bus
or the TIMING register for the I2C V2 bus.
This is hold by a i2c_config_timing structure of the device data
Add a bool to check if the I2C is configured or not.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
Previous commit added support of large transactions on I2C v2,
this commit implements some changes to also add support
of large transactions on I2C v1. Some refactoring is also done
to put the code in the right source files.
Fixes zephyrproject-rtos#58866
Signed-off-by: Michael Grand <m.grand@trustngo.tech>
Add I2C bus recovery support to the STM32 v1 and v2 driver. The STM32 i2c
peripheral does not natively support I2C bus recovery so recovery is
performed using GPIO bitbanging. This mirrors the bus recovery
implementation for NXP MCUX LPI2C driver.
Fixes: zephyrproject-rtos#54917
Signed-off-by: Maxmillion McLaughlin <github@maxmclau.com>
Add the possibility to use the clock parameter in dts to set the clock
source of I2C devices for all STM32 MCUs.
Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>
The Zephyr API supports multiple I2C targets addresses, and the STM32
I2C v2 implementation allows to define up to 2 targets addresses.
This patch adds support for a second I2C target address. It adds a new
config entry in the i2c_stm32_data structure, and uses the fact that
both addresses can be enabled and disabled independently. In the
interrupt, the target being addressed is determined using the address
match code from the interrupt status register.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Updates the API and types to match updated I2C terminology. Replaces master
with controller and slave with target.
Updates all drivers to match the changed macros, types, and API signatures.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
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>
Convert driver to pcintrl configuration using pcintrl helper
macros.
Pinctrl init sequence has to be done before bus_mutex initialization.
Driver dts bindings are updated to reflect usage of pinctrl-x
properties
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
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>
In case optional timings property has been defined in DT, let's use it
and look for a matching peripheral clock and i2c bus clock so that
timing value is used instead of using runtime algorithm.
If matching the current configuration, the value will be set directly to
the I2C_TIMINGR register through the LL API.
This property is only valid for I2C V2 peripheral, so the timing config
structure member is only added in case of CONFIG_I2C_STM32_V2. Also the
initialization of the member is done conditionnaly, only in case
it is defined in DT, otherwise timings table will be empty.
Signed-off-by: Laurent Meunier <laurent.meunier@st.com>
Add mutex to lock STM32 I2C bus in order to guarantee
that data transfers are atomic and have exclusive access
to the bus.
Issue has been found fetching data from multiple sensors
on I2C bus in a mixed context of thread and triggered
interrupt.
Signed-off-by: Armando Visconti <armando.visconti@st.com>
Any word started with underscore followed by and uppercase letter or a
second underscore is a reserved word according with C99.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This patch adds I2C Slave support conforming to the syscalls and funcs,
only for the STM32 V2 I2C Driver for the moment.
It is capable of handling multi-master bus setups.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Daniel Wagenknecht <wagenknecht@clage.de>
STM32 I2C driver doesn't use the I2C API flags STOP/RESTART,
instead it uses its own RESTART flag. As a result, I2C API's
i2c_burst_write* funtions doesn't work. This patch makes
STM32 I2C driver to use I2C API flags.
Tested on: 96b_carbon, olimexino_stm32 (i2c_ll_stm32_v1)
Tested on: stm32f3_disco, disco_l475_iot1 (i2c_ll_stm32_v2)
Fixes: #4459
Signed-off-by: Yannis Damigos <giannis.damigos@gmail.com>
Signed-off-by: Daniel Wagenknecht <wagenknecht@clage.de>
Cleanup I2C drivers to not use bitfield access for config information
and instead use accessor macros that use shifts & masks. This is
cleanup towards removing the bitfield access in the future.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Stop using CONFIG_I2C_x_DEFAULT_CFG to get the initial value. Since we
only support master mode we always default to it for initial config and
we get the bitrate from the device tree.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
