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94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
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/*
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* NXP (Philips) SCC+++(SCN+++) serial driver
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*
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* Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>
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*
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* Based on sc26xx.c, by Thomas Bogendörfer (tsbogend@alpha.franken.de)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __SCCNXP_H
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#define __SCCNXP_H
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#define SCCNXP_MAX_UARTS 2
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/* Output lines */
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#define LINE_OP0 1
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#define LINE_OP1 2
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#define LINE_OP2 3
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#define LINE_OP3 4
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#define LINE_OP4 5
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#define LINE_OP5 6
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#define LINE_OP6 7
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#define LINE_OP7 8
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/* Input lines */
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#define LINE_IP0 9
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#define LINE_IP1 10
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#define LINE_IP2 11
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#define LINE_IP3 12
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#define LINE_IP4 13
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#define LINE_IP5 14
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#define LINE_IP6 15
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/* Signals */
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#define DTR_OP 0 /* DTR */
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#define RTS_OP 4 /* RTS */
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#define DSR_IP 8 /* DSR */
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#define CTS_IP 12 /* CTS */
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#define DCD_IP 16 /* DCD */
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#define RNG_IP 20 /* RNG */
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#define DIR_OP 24 /* Special signal for control RS-485.
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* Goes high when transmit,
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* then goes low.
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*/
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/* Routing control signal 'sig' to line 'line' */
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#define MCTRL_SIG(sig, line) ((line) << (sig))
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/*
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* Example board initialization data:
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*
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* static struct resource sc2892_resources[] = {
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* DEFINE_RES_MEM(UART_PHYS_START, 0x10),
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* DEFINE_RES_IRQ(IRQ_EXT2),
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* };
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*
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* static struct sccnxp_pdata sc2892_info = {
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* .frequency = 3686400,
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* .mctrl_cfg[0] = MCTRL_SIG(DIR_OP, LINE_OP0),
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* .mctrl_cfg[1] = MCTRL_SIG(DIR_OP, LINE_OP1),
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* };
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*
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* static struct platform_device sc2892 = {
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* .name = "sc2892",
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* .id = -1,
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* .resource = sc2892_resources,
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* .num_resources = ARRAY_SIZE(sc2892_resources),
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* .dev = {
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* .platform_data = &sc2892_info,
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* },
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* };
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*/
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/* SCCNXP platform data structure */
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struct sccnxp_pdata {
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/* Frequency (extrenal clock or crystal) */
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int frequency;
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/* Shift for A0 line */
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const u8 reg_shift;
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/* Modem control lines configuration */
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const u32 mctrl_cfg[SCCNXP_MAX_UARTS];
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/* Called during startup */
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void (*init)(void);
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/* Called before finish */
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void (*exit)(void);
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};
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#endif
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