forked from Mirrors/opensbi
a524f0a507
The serial driver subsystem does not need any extra data, so it can use `struct fdt_driver` directly. The generic fdt_serial_init() first attempts to match the chosen stdout device, and upon failure matches the first available serial device in the DT. It is a fatal error if no such device is found. This matches the behavior of fdt_driver_init_one(). Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org>
40 lines
929 B
C
40 lines
929 B
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/serial/fdt_serial.h>
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#include <sbi_utils/serial/uart8250.h>
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static int serial_uart8250_init(const void *fdt, int nodeoff,
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const struct fdt_match *match)
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{
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int rc;
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struct platform_uart_data uart = { 0 };
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rc = fdt_parse_uart_node(fdt, nodeoff, &uart);
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if (rc)
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return rc;
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return uart8250_init(uart.addr, uart.freq, uart.baud,
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uart.reg_shift, uart.reg_io_width,
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uart.reg_offset);
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}
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static const struct fdt_match serial_uart8250_match[] = {
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{ .compatible = "ns16550" },
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{ .compatible = "ns16550a" },
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{ .compatible = "snps,dw-apb-uart" },
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{ },
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};
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const struct fdt_driver fdt_serial_uart8250 = {
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.match_table = serial_uart8250_match,
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.init = serial_uart8250_init,
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};
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