arch/arm/mach-sa1100/simpad.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/simpad.c
   3  */
   4
   5 #include <linux/config.h>
   6 #include <linux/module.h>
   7 #include <linux/init.h>
   8 #include <linux/kernel.h>
   9 #include <linux/tty.h>
  10 #include <linux/proc_fs.h>
  11 #include <linux/string.h>
  12 #include <linux/pm.h>
  13 #include <linux/device.h>
  14 #include <linux/mtd/mtd.h>
  15 #include <linux/mtd/partitions.h>
  16
  17 #include <asm/irq.h>
  18 #include <asm/hardware.h>
  19 #include <asm/setup.h>
  20
  21 #include <asm/mach-types.h>
  22 #include <asm/mach/arch.h>
  23 #include <asm/mach/flash.h>
  24 #include <asm/mach/map.h>
  25 #include <asm/mach/serial_sa1100.h>
  26 #include <asm/arch/simpad.h>
  27
  28 #include <linux/serial_core.h>
  29 #include <linux/ioport.h>
  30 #include <asm/io.h>
  31
  32 #include "generic.h"
  33
  34 long cs3_shadow;
  35
  36 long get_cs3_shadow(void)
  37 {
  38         return cs3_shadow;
  39 }
  40
  41 void set_cs3(long value)
  42 {
  43         *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow = value;
  44 }
  45
  46 void set_cs3_bit(int value)
  47 {
  48         cs3_shadow |= value;
  49         *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
  50 }
  51
  52 void clear_cs3_bit(int value)
  53 {
  54         cs3_shadow &= ~value;
  55         *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
  56 }
  57
  58 EXPORT_SYMBOL(set_cs3_bit);
  59 EXPORT_SYMBOL(clear_cs3_bit);
  60
  61 static struct map_desc simpad_io_desc[] __initdata = {
  62         /* virtual      physical    length      type */
  63         /* MQ200 */
  64         { 0xf2800000, 0x4b800000, 0x00800000, MT_DEVICE },
  65         /* Paules CS3, write only */
  66         { 0xf1000000, 0x18000000, 0x00100000, MT_DEVICE },
  67 };
  68
  69
  70 static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
  71 {
  72         if (port->mapbase == (u_int)&Ser1UTCR0) {
  73                 if (state)
  74                 {
  75                         clear_cs3_bit(RS232_ON);
  76                         clear_cs3_bit(DECT_POWER_ON);
  77                 }else
  78                 {
  79                         set_cs3_bit(RS232_ON);
  80                         set_cs3_bit(DECT_POWER_ON);
  81                 }
  82         }
  83 }
  84
  85 static struct sa1100_port_fns simpad_port_fns __initdata = {
  86         .pm        = simpad_uart_pm,
  87 };
  88
  89
  90 static struct mtd_partition simpad_partitions[] = {
  91         {
  92                 .name       = "SIMpad boot firmware",
  93                 .size       = 0x00080000,
  94                 .offset     = 0,
  95                 .mask_flags = MTD_WRITEABLE,
  96         }, {
  97                 .name       = "SIMpad kernel",
  98                 .size       = 0x0010000,
  99                 .offset     = MTDPART_OFS_APPEND,
 100         }, {
 101                 .name       = "SIMpad root jffs2",
 102                 .size       = MTDPART_SIZ_FULL,
 103                 .offset     = MTDPART_OFS_APPEND,
 104         }
 105 };
 106
 107 static struct flash_platform_data simpad_flash_data = {
 108         .map_name    = "cfi_probe",
 109         .parts       = simpad_partitions,
 110         .nr_parts    = ARRAY_SIZE(simpad_partitions),
 111 };
 112
 113
 114 static struct resource simpad_flash_resources [] = {
 115         {
 116                 .start     = SA1100_CS0_PHYS,
 117                 .end       = SA1100_CS0_PHYS + SZ_16M -1,
 118                 .flags     = IORESOURCE_MEM,
 119         }, {
 120                 .start     = SA1100_CS1_PHYS,
 121                 .end       = SA1100_CS1_PHYS + SZ_16M -1,
 122                 .flags     = IORESOURCE_MEM,
 123         }
 124 };
 125
 126
 127
 128 static void __init simpad_map_io(void)
 129 {
 130         sa1100_map_io();
 131
 132         iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));
 133
 134         set_cs3_bit (EN1 | EN0 | LED2_ON | DISPLAY_ON | RS232_ON |
 135                       ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
 136
 137
 138         sa1100_register_uart_fns(&simpad_port_fns);
 139         sa1100_register_uart(0, 3);  /* serial interface */
 140         sa1100_register_uart(1, 1);  /* DECT             */
 141
 142         // Reassign UART 1 pins
 143         GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
 144         GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
 145         GPDR &= ~GPIO_UART_RXD;
 146         PPAR |= PPAR_UPR;
 147
 148         /*
 149          * Set up registers for sleep mode.
 150          */
 151
 152
 153         PWER = PWER_GPIO0| PWER_RTC;
 154         PGSR = 0x818;
 155         PCFR = 0;
 156         PSDR = 0;
 157
 158         sa11x0_set_flash_data(&simpad_flash_data, simpad_flash_resources,
 159                               ARRAY_SIZE(simpad_flash_resources));
 160 }
 161
 162 static void simpad_power_off(void)
 163 {
 164         local_irq_disable(); // was cli
 165         set_cs3(0x800);        /* only SD_MEDIAQ */
 166
 167         /* disable internal oscillator, float CS lines */
 168         PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
 169         /* enable wake-up on GPIO0 (Assabet...) */
 170         PWER = GFER = GRER = 1;
 171         /*
 172          * set scratchpad to zero, just in case it is used as a
 173          * restart address by the bootloader.
 174          */
 175         PSPR = 0;
 176         PGSR = 0;
 177         /* enter sleep mode */
 178         PMCR = PMCR_SF;
 179         while(1);
 180
 181         local_irq_enable(); /* we won't ever call it */
 182
 183
 184 }
 185
 186
 187 /*
 188  * MediaQ Video Device
 189  */
 190 static struct platform_device simpad_mq200fb = {
 191         .name = "simpad-mq200",
 192         .id   = 0,
 193 };
 194
 195 static struct platform_device *devices[] __initdata = {
 196         &simpad_mq200fb
 197 };
 198
 199
 200
 201 static int __init simpad_init(void)
 202 {
 203         int ret;
 204
 205         pm_power_off = simpad_power_off;
 206
 207         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 208         if(ret)
 209                 printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");
 210
 211         return 0;
 212 }
 213
 214 arch_initcall(simpad_init);
 215
 216
 217 MACHINE_START(SIMPAD, "Simpad")
 218         MAINTAINER("Holger Freyther")
 219         BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
 220         BOOT_PARAMS(0xc0000100)
 221         MAPIO(simpad_map_io)
 222         INITIRQ(sa1100_init_irq)
 223         .timer          = &sa1100_timer,
 224 MACHINE_END