Move dmamux_stm32_channels struct from device data to device
configuration and initialize the dmamux channel - dma channel
assignment during build time,
as this association is hardwired in all known series.
The information is taken from dma_offset and dma_requests device tree
properties. The current implementation is valid for series with either
a single or two dma peripherals and a single dmamux peripheral.
Both dmas can independently enabled.
As the driver uses multi-instance DT_INST_DEFINE, also macros for a
second dmamux are are added that should allow easier extension to a
second dmamux instance.
Signed-off-by: Thomas Stranger <thomas.stranger@outlook.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>
This patch prepares the dma and introduces the dmamux on soc series
which supports this feature for memory/periph transfers.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
