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fbff3a7e07
Previously we assume only 1 UART8250 instance can be used. Now we support multiple instances by introducing counterpart functions to putc/getc/init which take an extra *dev parameter, and name them as uart8250_device_xyz() The original functions without the *dev parameter will operate on the default instance exactly the same as before, so no changes on the caller is required. Note: uart8250_device_init only does device initialization without the console registration logic. Signed-off-by: Bo Gan <ganboing@gmail.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20251218104243.562667-7-ganboing@gmail.com Signed-off-by: Anup Patel <anup@brainfault.org>
37 lines
877 B
C
37 lines
877 B
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 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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#ifndef __SERIAL_UART8250_H__
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#define __SERIAL_UART8250_H__
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#include <sbi/sbi_types.h>
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#define UART_CAP_UUE BIT(0) /* Check UUE capability for XScale PXA UARTs */
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struct uart8250_device {
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volatile char *base;
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u32 in_freq;
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u32 baudrate;
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u32 reg_width;
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u32 reg_shift;
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};
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int uart8250_device_getc(struct uart8250_device *dev);
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void uart8250_device_putc(struct uart8250_device *dev, char ch);
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void uart8250_device_init(struct uart8250_device *dev, unsigned long base,
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u32 in_freq, u32 baudrate, u32 reg_shift,
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u32 reg_width, u32 reg_offset, u32 caps);
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int uart8250_init(unsigned long base, u32 in_freq, u32 baudrate, u32 reg_shift,
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u32 reg_width, u32 reg_offset, u32 caps);
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#endif
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