1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * NXP (Philips) SCC+++(SCN+++) serial driver |
4 | * |
5 | * Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru> |
6 | * |
7 | * Based on sc26xx.c, by Thomas Bogendörfer (tsbogend@alpha.franken.de) |
8 | */ |
9 | |
10 | #ifndef _PLATFORM_DATA_SERIAL_SCCNXP_H_ |
11 | #define _PLATFORM_DATA_SERIAL_SCCNXP_H_ |
12 | |
13 | #define SCCNXP_MAX_UARTS 2 |
14 | |
15 | /* Output lines */ |
16 | #define LINE_OP0 1 |
17 | #define LINE_OP1 2 |
18 | #define LINE_OP2 3 |
19 | #define LINE_OP3 4 |
20 | #define LINE_OP4 5 |
21 | #define LINE_OP5 6 |
22 | #define LINE_OP6 7 |
23 | #define LINE_OP7 8 |
24 | |
25 | /* Input lines */ |
26 | #define LINE_IP0 9 |
27 | #define LINE_IP1 10 |
28 | #define LINE_IP2 11 |
29 | #define LINE_IP3 12 |
30 | #define LINE_IP4 13 |
31 | #define LINE_IP5 14 |
32 | #define LINE_IP6 15 |
33 | |
34 | /* Signals */ |
35 | #define DTR_OP 0 /* DTR */ |
36 | #define RTS_OP 4 /* RTS */ |
37 | #define DSR_IP 8 /* DSR */ |
38 | #define CTS_IP 12 /* CTS */ |
39 | #define DCD_IP 16 /* DCD */ |
40 | #define RNG_IP 20 /* RNG */ |
41 | |
42 | #define DIR_OP 24 /* Special signal for control RS-485. |
43 | * Goes high when transmit, |
44 | * then goes low. |
45 | */ |
46 | |
47 | /* Routing control signal 'sig' to line 'line' */ |
48 | #define MCTRL_SIG(sig, line) ((line) << (sig)) |
49 | |
50 | /* |
51 | * Example board initialization data: |
52 | * |
53 | * static struct resource sc2892_resources[] = { |
54 | * DEFINE_RES_MEM(UART_PHYS_START, 0x10), |
55 | * DEFINE_RES_IRQ(IRQ_EXT2), |
56 | * }; |
57 | * |
58 | * static struct sccnxp_pdata sc2892_info = { |
59 | * .mctrl_cfg[0] = MCTRL_SIG(DIR_OP, LINE_OP0), |
60 | * .mctrl_cfg[1] = MCTRL_SIG(DIR_OP, LINE_OP1), |
61 | * }; |
62 | * |
63 | * static struct platform_device sc2892 = { |
64 | * .name = "sc2892", |
65 | * .id = -1, |
66 | * .resource = sc2892_resources, |
67 | * .num_resources = ARRAY_SIZE(sc2892_resources), |
68 | * .dev = { |
69 | * .platform_data = &sc2892_info, |
70 | * }, |
71 | * }; |
72 | */ |
73 | |
74 | /* SCCNXP platform data structure */ |
75 | struct sccnxp_pdata { |
76 | /* Shift for A0 line */ |
77 | const u8 reg_shift; |
78 | /* Modem control lines configuration */ |
79 | const u32 mctrl_cfg[SCCNXP_MAX_UARTS]; |
80 | /* Timer value for polling mode (usecs) */ |
81 | const unsigned int poll_time_us; |
82 | }; |
83 | |
84 | #endif |
85 | |