69f1ecb8f8
This is required for FDT's standard "reg-io-width" property (similar to "reg-shift" property) found in many DTS files. This fixes operation on Altera Arria 10 SOC Development Kit, where standard ns8250 uart allows 4-byte access only. Reviewed by: kan, marcel Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D9785
60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
/*-
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* Copyright 2015 Michal Meloun
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _DEV_UART_CPU_FDT_H_
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#define _DEV_UART_CPU_FDT_H_
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#include <sys/linker_set.h>
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#include <dev/ofw/ofw_bus_subr.h>
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/*
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* If your UART driver implements only uart_class and uses uart_cpu_fdt.c
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* for device instantiation, then use UART_FDT_CLASS_AND_DEVICE for its
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* declaration
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*/
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SET_DECLARE(uart_fdt_class_and_device_set, struct ofw_compat_data );
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#define UART_FDT_CLASS_AND_DEVICE(data) \
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DATA_SET(uart_fdt_class_and_device_set, data)
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/*
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* If your UART driver implements uart_class and custom device layer,
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* then use UART_FDT_CLASS for its declaration
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*/
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SET_DECLARE(uart_fdt_class_set, struct ofw_compat_data );
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#define UART_FDT_CLASS(data) \
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DATA_SET(uart_fdt_class_set, data)
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int uart_cpu_fdt_probe(struct uart_class **, bus_space_tag_t *,
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bus_space_handle_t *, int *, u_int *, u_int *, u_int *);
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int uart_fdt_get_clock(phandle_t node, pcell_t *cell);
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int uart_fdt_get_shift(phandle_t node, pcell_t *cell);
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int uart_fdt_get_io_width(phandle_t node, pcell_t *cell);
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#endif /* _DEV_UART_CPU_FDT_H_ */
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