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1/* SPDX-License-Identifier: GPL-2.0
2 *
3 * include/asm-sh/snapgear.h
4 *
5 * Modified version of io_se.h for the snapgear-specific functions.
6 *
7 * IO functions for a SnapGear
8 */
9
10#ifndef _ASM_SH_IO_SNAPGEAR_H
11#define _ASM_SH_IO_SNAPGEAR_H
12
13#define __IO_PREFIX snapgear
14#include <asm/io_generic.h>
15
16/*
17 * We need to remember what was written to the ioport as some bits
18 * are shared with other functions and you cannot read back what was
19 * written :-|
20 *
21 * Bit Read Write
22 * -----------------------------------------------
23 * D0 DCD on ttySC1 power
24 * D1 Reset Switch heatbeat
25 * D2 ttySC0 CTS (7100) LAN
26 * D3 - WAN
27 * D4 ttySC0 DCD (7100) CONSOLE
28 * D5 - ONLINE
29 * D6 - VPN
30 * D7 - DTR on ttySC1
31 * D8 - ttySC0 RTS (7100)
32 * D9 - ttySC0 DTR (7100)
33 * D10 - RTC SCLK
34 * D11 RTC DATA RTC DATA
35 * D12 - RTS RESET
36 */
37
38#define SECUREEDGE_IOPORT_ADDR ((volatile short *) 0xb0000000)
39extern unsigned short secureedge5410_ioport;
40
41#define SECUREEDGE_WRITE_IOPORT(val, mask) (*SECUREEDGE_IOPORT_ADDR = \
42 (secureedge5410_ioport = \
43 ((secureedge5410_ioport & ~(mask)) | ((val) & (mask)))))
44#define SECUREEDGE_READ_IOPORT() \
45 ((*SECUREEDGE_IOPORT_ADDR&0x0817) | (secureedge5410_ioport&~0x0817))
46
47#endif /* _ASM_SH_IO_SNAPGEAR_H */
48

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source code of linux/arch/sh/include/mach-common/mach/secureedge5410.h