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drivers: serial: ns16550: Remove hard-coded max instance count

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Instead of having a hard-coded maximum instance count, introduce a
Kconfig variable for it. The inclusion of the per-instance header
files is solved by having them chain-include each other with a
pre-processor condition that checks if the current header file is the
last one or not.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Johan Hedberg 2020-12-21 15:32:45 +02:00 • committed by Anas Nashif
commit 4fa0a9b4b2
4 changed files with 19 additions and 4 deletions
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4
drivers/serial/CMakeLists.txt
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@ -42,7 +42,9 @@ zephyr_library_sources_ifdef(CONFIG_USERSPACE uart_handlers.c)
if(CONFIG_UART_NS16550)
zephyr_library_sources(uart_ns16550.c)
foreach(NUM RANGE 0 3)
math(EXPR max_index "${CONFIG_UART_NS16550_MAX_INSTANCES} - 1")
foreach(NUM RANGE 0 ${max_index})
math(EXPR NEXT_NUM "${NUM} + 1")
configure_file(
uart_ns16550_port_x.h
${PROJECT_BINARY_DIR}/include/generated/uart_ns16550_port_${NUM}.h