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/mcp.h>
  27 #include <asm/arch/simpad.h>
  28
  29 #include <linux/serial_core.h>
  30 #include <linux/ioport.h>
  31 #include <asm/io.h>
  32
  33 #include "generic.h"
  34
  35 long cs3_shadow;
  36
  37 long get_cs3_shadow(void)
  38 {
  39         return cs3_shadow;
  40 }
  41
  42 void set_cs3(long value)
  43 {
  44         *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow = value;
  45 }
  46
  47 void set_cs3_bit(int value)
  48 {
  49         cs3_shadow |= value;
  50         *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
  51 }
  52
  53 void clear_cs3_bit(int value)
  54 {
  55         cs3_shadow &= ~value;
  56         *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
  57 }
  58
  59 EXPORT_SYMBOL(set_cs3_bit);
  60 EXPORT_SYMBOL(clear_cs3_bit);
  61
  62 static struct map_desc simpad_io_desc[] __initdata = {
  63         /* virtual      physical    length      type */
  64         /* MQ200 */
  65         { 0xf2800000, 0x4b800000, 0x00800000, MT_DEVICE },
  66         /* Paules CS3, write only */
  67         { 0xf1000000, 0x18000000, 0x00100000, MT_DEVICE },
  68 };
  69
  70
  71 static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
  72 {
  73         if (port->mapbase == (u_int)&Ser1UTCR0) {
  74                 if (state)
  75                 {
  76                         clear_cs3_bit(RS232_ON);
  77                         clear_cs3_bit(DECT_POWER_ON);
  78                 }else
  79                 {
  80                         set_cs3_bit(RS232_ON);
  81                         set_cs3_bit(DECT_POWER_ON);
  82                 }
  83         }
  84 }
  85
  86 static struct sa1100_port_fns simpad_port_fns __initdata = {
  87         .pm        = simpad_uart_pm,
  88 };
  89
  90
  91 static struct mtd_partition simpad_partitions[] = {
  92         {
  93                 .name       = "SIMpad boot firmware",
  94                 .size       = 0x00080000,
  95                 .offset     = 0,
  96                 .mask_flags = MTD_WRITEABLE,
  97         }, {
  98                 .name       = "SIMpad kernel",
  99                 .size       = 0x0010000,
 100                 .offset     = MTDPART_OFS_APPEND,
 101         }, {
 102                 .name       = "SIMpad root jffs2",
 103                 .size       = MTDPART_SIZ_FULL,
 104                 .offset     = MTDPART_OFS_APPEND,
 105         }
 106 };
 107
 108 static struct flash_platform_data simpad_flash_data = {
 109         .map_name    = "cfi_probe",
 110         .parts       = simpad_partitions,
 111         .nr_parts    = ARRAY_SIZE(simpad_partitions),
 112 };
 113
 114
 115 static struct resource simpad_flash_resources [] = {
 116         {
 117                 .start     = SA1100_CS0_PHYS,
 118                 .end       = SA1100_CS0_PHYS + SZ_16M -1,
 119                 .flags     = IORESOURCE_MEM,
 120         }, {
 121                 .start     = SA1100_CS1_PHYS,
 122                 .end       = SA1100_CS1_PHYS + SZ_16M -1,
 123                 .flags     = IORESOURCE_MEM,
 124         }
 125 };
 126
 127 static struct mcp_plat_data simpad_mcp_data = {
 128         .mccr0          = MCCR0_ADM,
 129         .sclk_rate      = 11981000,
 130 };
 131
 132
 133
 134 static void __init simpad_map_io(void)
 135 {
 136         sa1100_map_io();
 137
 138         iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));
 139
 140         set_cs3_bit (EN1 | EN0 | LED2_ON | DISPLAY_ON | RS232_ON |
 141                       ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
 142
 143
 144         sa1100_register_uart_fns(&simpad_port_fns);
 145         sa1100_register_uart(0, 3);  /* serial interface */
 146         sa1100_register_uart(1, 1);  /* DECT             */
 147
 148         // Reassign UART 1 pins
 149         GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
 150         GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
 151         GPDR &= ~GPIO_UART_RXD;
 152         PPAR |= PPAR_UPR;
 153
 154         /*
 155          * Set up registers for sleep mode.
 156          */
 157
 158
 159         PWER = PWER_GPIO0| PWER_RTC;
 160         PGSR = 0x818;
 161         PCFR = 0;
 162         PSDR = 0;
 163
 164         sa11x0_set_flash_data(&simpad_flash_data, simpad_flash_resources,
 165                               ARRAY_SIZE(simpad_flash_resources));
 166         sa11x0_set_mcp_data(&simpad_mcp_data);
 167 }
 168
 169 static void simpad_power_off(void)
 170 {
 171         local_irq_disable(); // was cli
 172         set_cs3(0x800);        /* only SD_MEDIAQ */
 173
 174         /* disable internal oscillator, float CS lines */
 175         PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
 176         /* enable wake-up on GPIO0 (Assabet...) */
 177         PWER = GFER = GRER = 1;
 178         /*
 179          * set scratchpad to zero, just in case it is used as a
 180          * restart address by the bootloader.
 181          */
 182         PSPR = 0;
 183         PGSR = 0;
 184         /* enter sleep mode */
 185         PMCR = PMCR_SF;
 186         while(1);
 187
 188         local_irq_enable(); /* we won't ever call it */
 189
 190
 191 }
 192
 193
 194 /*
 195  * MediaQ Video Device
 196  */
 197 static struct platform_device simpad_mq200fb = {
 198         .name = "simpad-mq200",
 199         .id   = 0,
 200 };
 201
 202 static struct platform_device *devices[] __initdata = {
 203         &simpad_mq200fb
 204 };
 205
 206
 207
 208 static int __init simpad_init(void)
 209 {
 210         int ret;
 211
 212         pm_power_off = simpad_power_off;
 213
 214         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 215         if(ret)
 216                 printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");
 217
 218         return 0;
 219 }
 220
 221 arch_initcall(simpad_init);
 222
 223
 224 MACHINE_START(SIMPAD, "Simpad")
 225         /* Maintainer: Holger Freyther */
 226         .phys_ram       = 0xc0000000,
 227         .phys_io        = 0x80000000,
 228         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 229         .boot_params    = 0xc0000100,
 230         .map_io         = simpad_map_io,
 231         .init_irq       = sa1100_init_irq,
 232         .timer          = &sa1100_timer,
 233 MACHINE_END