projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1d65c0b1 AS |
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 __SCCNXP_H | |
| 15 | #define __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 | * .frequency = 3686400, | |
| 64 | * .mctrl_cfg[0] = MCTRL_SIG(DIR_OP, LINE_OP0), | |
| 65 | * .mctrl_cfg[1] = MCTRL_SIG(DIR_OP, LINE_OP1), | |
| 66 | * }; | |
| 67 | * | |
| 68 | * static struct platform_device sc2892 = { | |
| 69 | * .name = "sc2892", | |
| 70 | * .id = -1, | |
| 71 | * .resource = sc2892_resources, | |
| 72 | * .num_resources = ARRAY_SIZE(sc2892_resources), | |
| 73 | * .dev = { | |
| 74 | * .platform_data = &sc2892_info, | |
| 75 | * }, | |
| 76 | * }; | |
| 77 | */ | |
| 78 | ||
| 79 | /* SCCNXP platform data structure */ | |
| 80 | struct sccnxp_pdata { | |
| 81 | /* Frequency (extrenal clock or crystal) */ | |
| 82 | int frequency; | |
| 83 | /* Shift for A0 line */ | |
| 84 | const u8 reg_shift; | |
| 85 | /* Modem control lines configuration */ | |
| 86 | const u32 mctrl_cfg[SCCNXP_MAX_UARTS]; | |
| 87 | /* Called during startup */ | |
| 88 | void (*init)(void); | |
| 89 | /* Called before finish */ | |
| 90 | void (*exit)(void); | |
| 91 | }; | |
| 92 | ||
| 93 | #endif |