gsm_mux and uart_mux are deprecated and will be removed.
Remove integration with gsm_mux and uart_mux from modem_shell.c
Signed-off-by: Bjarki Arge Andreasen <bjarki@arge-andreasen.me>
The UART IFACE API currently exposes the context struct
modem_iface_uart_data, expecting the user to fill in some
of the fields, with no documentation specifying which fields
and what they mean.
This API update moves all user configurable values in the context
out into a config struct, modem_iface_uart_config, within which
members are documented.
This prevents the user from interacting directly with the context
making use of the library safer and more readable.
The config structure helps make code readable by using "named args"
in a const struct instead of a long, nameless, parameter list passed
to the modem_iface_uart_init function.
The new API function modem_iface_uart_rx_wait is added to prevent the
user from having to interact with the rx sem in the context directly.
The context can now be safely interated with without direct access to
any of its members.
Pointers to the ring buffer params in the context have been moved to
config struct, as these are only useful during initialization of the
context.
Signed-off-by: Bjarki Arge Andreasen <baa@trackunit.com>
Add a choice symbol that is used to select which UART backend to use.
This allows backends that don't use the interrupt API to be implemented.
Signed-off-by: Jordan Yates <jordan.yates@data61.csiro.au>
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>
CONFIG_UART_MUX_DEVICE_NAME is used as a prefix for the uart muxes
name. Pointer comparison will always return false
Fix#39774
Signed-off-by: Guillaume Lager <g.lager@innoseis.com>
So far modem API used UART device names / labels. Change API to operate
on device pointers instead, so that we stop using device_get_binding()
in modem core and in some DT compatible modem drivers.
Signed-off-by: Marcin Niestroj <m.niestroj@emb.dev>
When PPP is muxed, using uart_poll_out resulted in each byte getting
wrapped in a muxing header. This led to UART bombardment which
can quickly cause some modems to hang and panic. This was observed
regularly using a SIMCOM7600E modem.
A perfect fix would involve rewriting ppp.c, uart_mux.c and
modem_iface_uart.c to all use another UART API, but that would be more
invasive by several orders of magnitude than this one, which utilizes
the fact that the uart_mux implementation of uart_fifo_fill does NOT
require ISR context. Since the Zephyr UART API states that the behavior
of uart_fifo_fill outside of ISR context is implementation defined, this
should be kosher.
Signed-off-by: Benjamin Lindqvist <benjamin.lindqvist@endian.se>
These changes enable applications to restart the networking stack which
was previously not possible without rebooting the device. This was a
major show-stopper because it made power management impossible, and
furthermore made it impossible to recover from a bad modem state without
rebooting.
This has been verified to work on a SIMCOM7600E modem, both with and
without CONFIG_GSM_MUX enabled.
Signed-off-by: Benjamin Lindqvist <benjamin.lindqvist@endian.se>
So far all received bytes over UART where blindly drained and pushed to
ring_buf. This approach is okay for UART devices without configured HW
flow control, as it basically decouples data processing from ISR handler
and gives more time before data overrun. However when HW flow control
is enabled, such behavior somehow suppresses UART flow control
advantage, because data can overrun when pushing to ring_buf.
Allow drivers utilizing modem_context framework to pass information
about whether HW flow control is enabled or not. If it is enabled, then
read data from UART FIFO to the point when RX ring_buf is totally filled
and follow such situation by disabling RX interrupt. Incoming data will
be paused on HW level, so there is lots of time for RX thread to process
ring_buf content. Reenable RX interrupts after all data in ring_buf is
processed, so that number of context switches is kept at minimum level.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
This API allows to drop use of preallocated isr_buf. Most importantly as
a result RAM usage is reduced for each driver utilizing modem_context
framework. Additionally there is less copying done in ISR context, as
data is direcly read from UART FIFO to ring_buf.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.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>
It was already using uart_irq_callback_user_data_set below, now it also
uses uart_irq_callback_user_data_t as callback type, so let's normalize
the callbacks.
Fixes#26923
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This is needed if muxing is enabled in which case we must
change the UART to muxing UART after the AT+CMUX command
has succeed.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Bjarki Arge Andreasen
Benjamin Cabé
Bjarki Arge Andreasen
Jordan Yates
Gerard Marull-Paretas
Guillaume Lager
Marcin Niestroj
Benjamin Lindqvist
Marcin Niestroj
Tomasz Bursztyka
Kumar Gala
Jukka Rissanen
Michael Scott