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