1 /*
2  *  NXP (Philips) SCC+++(SCN+++) serial driver
3  *
4  *  Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>
5  *
6  *  Based on sc26xx.c, by Thomas Bogendörfer (tsbogend@alpha.franken.de)
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU General Public License as published by
10  *  the Free Software Foundation; either version 2 of the License, or
11  *  (at your option) any later version.
12  */
13 
14 #ifndef _PLATFORM_DATA_SERIAL_SCCNXP_H_
15 #define _PLATFORM_DATA_SERIAL_SCCNXP_H_
16 
17 #define SCCNXP_MAX_UARTS	2
18 
19 /* Output lines */
20 #define LINE_OP0		1
21 #define LINE_OP1		2
22 #define LINE_OP2		3
23 #define LINE_OP3		4
24 #define LINE_OP4		5
25 #define LINE_OP5		6
26 #define LINE_OP6		7
27 #define LINE_OP7		8
28 
29 /* Input lines */
30 #define LINE_IP0		9
31 #define LINE_IP1		10
32 #define LINE_IP2		11
33 #define LINE_IP3		12
34 #define LINE_IP4		13
35 #define LINE_IP5		14
36 #define LINE_IP6		15
37 
38 /* Signals */
39 #define DTR_OP			0	/* DTR */
40 #define RTS_OP			4	/* RTS */
41 #define DSR_IP			8	/* DSR */
42 #define CTS_IP			12	/* CTS */
43 #define DCD_IP			16	/* DCD */
44 #define RNG_IP			20	/* RNG */
45 
46 #define DIR_OP			24	/* Special signal for control RS-485.
47 					 * Goes high when transmit,
48 					 * then goes low.
49 					 */
50 
51 /* Routing control signal 'sig' to line 'line' */
52 #define MCTRL_SIG(sig, line)	((line) << (sig))
53 
54 /*
55  * Example board initialization data:
56  *
57  * static struct resource sc2892_resources[] = {
58  *	DEFINE_RES_MEM(UART_PHYS_START, 0x10),
59  *	DEFINE_RES_IRQ(IRQ_EXT2),
60  * };
61  *
62  * static struct sccnxp_pdata sc2892_info = {
63  *	.mctrl_cfg[0]	= MCTRL_SIG(DIR_OP, LINE_OP0),
64  *	.mctrl_cfg[1]	= MCTRL_SIG(DIR_OP, LINE_OP1),
65  * };
66  *
67  * static struct platform_device sc2892 = {
68  *	.name		= "sc2892",
69  *	.id		= -1,
70  *	.resource	= sc2892_resources,
71  *	.num_resources	= ARRAY_SIZE(sc2892_resources),
72  *	.dev = {
73  *		.platform_data	= &sc2892_info,
74  *	},
75  * };
76  */
77 
78 /* SCCNXP platform data structure */
79 struct sccnxp_pdata {
80 	/* Shift for A0 line */
81 	const u8		reg_shift;
82 	/* Modem control lines configuration */
83 	const u32		mctrl_cfg[SCCNXP_MAX_UARTS];
84 	/* Timer value for polling mode (usecs) */
85 	const unsigned int	poll_time_us;
86 };
87 
88 #endif
89