include/linux/platform_data/serial-sccnxp.h

   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