arch/arm/mach-sa1100/hackkit.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/hackkit.c
   3  *
   4  * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
   5  *
   6  * This file contains all HackKit tweaks. Based on original work from
   7  * Nicolas Pitre's assabet fixes
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  */
  14 #include <linux/init.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/tty.h>
  18 #include <linux/module.h>
  19 #include <linux/errno.h>
  20 #include <linux/cpufreq.h>
  21 #include <linux/serial_core.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/partitions.h>
  24
  25 #include <mach/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/setup.h>
  28 #include <asm/page.h>
  29 #include <asm/pgtable.h>
  30 #include <asm/irq.h>
  31
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/flash.h>
  34 #include <asm/mach/map.h>
  35 #include <asm/mach/irq.h>
  36 #include <asm/mach/serial_sa1100.h>
  37
  38 #include "generic.h"
  39
  40 /**********************************************************************
  41  *  prototypes
  42  */
  43
  44 /* init funcs */
  45 static void __init hackkit_map_io(void);
  46
  47 static u_int hackkit_get_mctrl(struct uart_port *port);
  48 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
  49 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
  50
  51 /**********************************************************************
  52  *  global data
  53  */
  54
  55 /**********************************************************************
  56  *  static data
  57  */
  58
  59 static struct map_desc hackkit_io_desc[] __initdata = {
  60         {       /* Flash bank 0 */
  61                 .virtual        =  0xe8000000,
  62                 .pfn            = __phys_to_pfn(0x00000000),
  63                 .length         = 0x01000000,
  64                 .type           = MT_DEVICE
  65         },
  66 };
  67
  68 static struct sa1100_port_fns hackkit_port_fns __initdata = {
  69         .set_mctrl      = hackkit_set_mctrl,
  70         .get_mctrl      = hackkit_get_mctrl,
  71         .pm             = hackkit_uart_pm,
  72 };
  73
  74 /**********************************************************************
  75  *  Static functions
  76  */
  77
  78 static void __init hackkit_map_io(void)
  79 {
  80         sa1100_map_io();
  81         iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
  82
  83         sa1100_register_uart_fns(&hackkit_port_fns);
  84         sa1100_register_uart(0, 1);     /* com port */
  85         sa1100_register_uart(1, 2);
  86         sa1100_register_uart(2, 3);     /* radio module */
  87
  88         Ser1SDCR0 |= SDCR0_SUS;
  89 }
  90
  91 /**
  92  *      hackkit_uart_pm - powermgmt callback function for system 3 UART
  93  *      @port: uart port structure
  94  *      @state: pm state
  95  *      @oldstate: old pm state
  96  *
  97  */
  98 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
  99 {
 100         /* TODO: switch on/off uart in powersave mode */
 101 }
 102
 103 /*
 104  * Note! this can be called from IRQ context.
 105  * FIXME: No modem ctrl lines yet.
 106  */
 107 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
 108 {
 109 #if 0
 110         if (port->mapbase == _Ser1UTCR0) {
 111                 u_int set = 0, clear = 0;
 112
 113                 if (mctrl & TIOCM_RTS)
 114                         set |= PT_CTRL2_RS1_RTS;
 115                 else
 116                         clear |= PT_CTRL2_RS1_RTS;
 117
 118                 if (mctrl & TIOCM_DTR)
 119                         set |= PT_CTRL2_RS1_DTR;
 120                 else
 121                         clear |= PT_CTRL2_RS1_DTR;
 122
 123                 PTCTRL2_clear(clear);
 124                 PTCTRL2_set(set);
 125         }
 126 #endif
 127 }
 128
 129 static u_int hackkit_get_mctrl(struct uart_port *port)
 130 {
 131         u_int ret = 0;
 132 #if 0
 133         u_int irqsr = PT_IRQSR;
 134
 135         /* need 2 reads to read current value */
 136         irqsr = PT_IRQSR;
 137
 138         /* TODO: check IRQ source register for modem/com
 139          status lines and set them correctly. */
 140 #endif
 141
 142         ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
 143
 144         return ret;
 145 }
 146
 147 static struct mtd_partition hackkit_partitions[] = {
 148         {
 149                 .name           = "BLOB",
 150                 .size           = 0x00040000,
 151                 .offset         = 0x00000000,
 152                 .mask_flags     = MTD_WRITEABLE,  /* force read-only */
 153         }, {
 154                 .name           = "config",
 155                 .size           = 0x00040000,
 156                 .offset         = MTDPART_OFS_APPEND,
 157         }, {
 158                 .name           = "kernel",
 159                 .size           = 0x00100000,
 160                 .offset         = MTDPART_OFS_APPEND,
 161         }, {
 162                 .name           = "initrd",
 163                 .size           = 0x00180000,
 164                 .offset         = MTDPART_OFS_APPEND,
 165         }, {
 166                 .name           = "rootfs",
 167                 .size           = 0x700000,
 168                 .offset         = MTDPART_OFS_APPEND,
 169         }, {
 170                 .name           = "data",
 171                 .size           = MTDPART_SIZ_FULL,
 172                 .offset         = MTDPART_OFS_APPEND,
 173         }
 174 };
 175
 176 static struct flash_platform_data hackkit_flash_data = {
 177         .map_name       = "cfi_probe",
 178         .parts          = hackkit_partitions,
 179         .nr_parts       = ARRAY_SIZE(hackkit_partitions),
 180 };
 181
 182 static struct resource hackkit_flash_resource = {
 183         .start          = SA1100_CS0_PHYS,
 184         .end            = SA1100_CS0_PHYS + SZ_32M,
 185         .flags          = IORESOURCE_MEM,
 186 };
 187
 188 static void __init hackkit_init(void)
 189 {
 190         sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1);
 191 }
 192
 193 /**********************************************************************
 194  *  Exported Functions
 195  */
 196
 197 MACHINE_START(HACKKIT, "HackKit Cpu Board")
 198         .atag_offset    = 0x100,
 199         .map_io         = hackkit_map_io,
 200         .init_irq       = sa1100_init_irq,
 201         .timer          = &sa1100_timer,
 202         .init_machine   = hackkit_init,
 203 MACHINE_END