Add a Kconfig to have the ability to fine tune the amount of RAM that
the driver uses based on the number of channels expected to be used.
Most of the code is already there but just need this Kconfig to get the
benefit of it by reducing the size of the statically created arrays.
Also change the number of channels field in the configuration to a byte
instead of a 32 bit integer because that should be sufficient to
describe the number of DMA channels.
Rename LPC DMA Driver Kconfigs with namespace to MCUX_LPC
Signed-off-by: Declan Snyder <declan.snyder@nxp.com>
1. Transfers are not limited by XFERCOUNT transfer length of
LPC DMA descriptor. Added code to handle block sizes
greater than XFERCOUNT.
2. Use the reload_en flag to decide if we should setup
a circular descriptor chain.
3. Improve handling of source and destination width.
4. Number of DMA descriptors are defined by a Kconfig value.
5. Changed the dma_reload function to handle transfers
greater than XFERCOUNT.
Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
Update DMA drivers to use DT_HAS_<compat>_ENABLED Kconfig symbol
to expose the driver and enable it by default based on devicetree.
We remove 'depend on' Kconfig for symbols that would be implied by
the devicetree node existing.
Signed-off-by: Kumar Gala <galak@kernel.org>
According to Kconfig guidelines, boolean prompts must not start with
"Enable...". The following command has been used to automate the changes
in this patch:
sed -i "s/bool \"[Ee]nables\? \(\w\)/bool \"\U\1/g" **/Kconfig*
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
