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drivers: serial: driver init level based on parent node

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Boot level based on parent node (PCI or no PCI device). Some platforms the
PCI bus driver depends on ACPI sub system to retrieve platform information
such as interrupt routing information. But ACPI sub system currently
support only post kernel and hence such platforms the UART driver instance
init should be invoked only post kernel in case parent node is PCI.

Signed-off-by: Najumon B.A <najumon.ba@intel.com>
This commit is contained in:
Najumon B.A 2023-06-20 13:47:42 +05:30 • committed by Johan Hedberg
commit b4ed6c4300
2 changed files with 20 additions and 1 deletions
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11
drivers/serial/uart_ns16550.c
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@ -1248,6 +1248,15 @@ static const struct uart_driver_api uart_ns16550_driver_api = {
#define DEV_DATA_DLF_INIT(n) \
_CONCAT(DEV_DATA_DLF, DT_INST_NODE_HAS_PROP(n, dlf))(n)
#ifdef CONFIG_UART_NS16550_PARENT_INIT_LEVEL
#define NS16550_BOOT_LEVEL0 PRE_KERNEL_1
#define NS16550_BOOT_LEVEL1 POST_KERNEL
#define BOOT_LEVEL(n) \
_CONCAT(NS16550_BOOT_LEVEL, DT_INST_ON_BUS(n, pcie))
#else
#define BOOT_LEVEL(n) PRE_KERNEL_1
#endif
#define UART_NS16550_DEVICE_INIT(n) \
UART_NS16550_IRQ_FUNC_DECLARE(n); \
DEV_PCIE_DECLARE(n); \
@ -1283,7 +1292,7 @@ static const struct uart_driver_api uart_ns16550_driver_api = {
}; \
DEVICE_DT_INST_DEFINE(n, &uart_ns16550_init, NULL, \
&uart_ns16550_dev_data_##n, &uart_ns16550_dev_cfg_##n, \
PRE_KERNEL_1, CONFIG_SERIAL_INIT_PRIORITY, \
BOOT_LEVEL(n), CONFIG_SERIAL_INIT_PRIORITY, \
&uart_ns16550_driver_api); \
UART_NS16550_IRQ_FUNC_DEFINE(n)