release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-sa1100/simpad.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/simpad.c
   3  */
   4
   5 #include <linux/module.h>
   6 #include <linux/init.h>
   7 #include <linux/kernel.h>
   8 #include <linux/tty.h>
   9 #include <linux/proc_fs.h>
  10 #include <linux/string.h>
  11 #include <linux/pm.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/mtd/mtd.h>
  14 #include <linux/mtd/partitions.h>
  15 #include <linux/io.h>
  16
  17 #include <asm/irq.h>
  18 #include <mach/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 <mach/mcp.h>
  27 #include <mach/simpad.h>
  28
  29 #include <linux/serial_core.h>
  30 #include <linux/ioport.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         {       /* MQ200 */
  63                 .virtual        =  0xf2800000,
  64                 .pfn            = __phys_to_pfn(0x4b800000),
  65                 .length         = 0x00800000,
  66                 .type           = MT_DEVICE
  67         }, {    /* Paules CS3, write only */
  68                 .virtual        =  0xf1000000,
  69                 .pfn            = __phys_to_pfn(0x18000000),
  70                 .length         = 0x00100000,
  71                 .type           = MT_DEVICE
  72         },
  73 };
  74
  75
  76 static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
  77 {
  78         if (port->mapbase == (u_int)&Ser1UTCR0) {
  79                 if (state)
  80                 {
  81                         clear_cs3_bit(RS232_ON);
  82                         clear_cs3_bit(DECT_POWER_ON);
  83                 }else
  84                 {
  85                         set_cs3_bit(RS232_ON);
  86                         set_cs3_bit(DECT_POWER_ON);
  87                 }
  88         }
  89 }
  90
  91 static struct sa1100_port_fns simpad_port_fns __initdata = {
  92         .pm        = simpad_uart_pm,
  93 };
  94
  95
  96 static struct mtd_partition simpad_partitions[] = {
  97         {
  98                 .name       = "SIMpad boot firmware",
  99                 .size       = 0x00080000,
 100                 .offset     = 0,
 101                 .mask_flags = MTD_WRITEABLE,
 102         }, {
 103                 .name       = "SIMpad kernel",
 104                 .size       = 0x0010000,
 105                 .offset     = MTDPART_OFS_APPEND,
 106         }, {
 107                 .name       = "SIMpad root jffs2",
 108                 .size       = MTDPART_SIZ_FULL,
 109                 .offset     = MTDPART_OFS_APPEND,
 110         }
 111 };
 112
 113 static struct flash_platform_data simpad_flash_data = {
 114         .map_name    = "cfi_probe",
 115         .parts       = simpad_partitions,
 116         .nr_parts    = ARRAY_SIZE(simpad_partitions),
 117 };
 118
 119
 120 static struct resource simpad_flash_resources [] = {
 121         {
 122                 .start     = SA1100_CS0_PHYS,
 123                 .end       = SA1100_CS0_PHYS + SZ_16M -1,
 124                 .flags     = IORESOURCE_MEM,
 125         }, {
 126                 .start     = SA1100_CS1_PHYS,
 127                 .end       = SA1100_CS1_PHYS + SZ_16M -1,
 128                 .flags     = IORESOURCE_MEM,
 129         }
 130 };
 131
 132 static struct mcp_plat_data simpad_mcp_data = {
 133         .mccr0          = MCCR0_ADM,
 134         .sclk_rate      = 11981000,
 135 };
 136
 137
 138
 139 static void __init simpad_map_io(void)
 140 {
 141         sa1100_map_io();
 142
 143         iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));
 144
 145         set_cs3_bit (EN1 | EN0 | LED2_ON | DISPLAY_ON | RS232_ON |
 146                       ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
 147
 148
 149         sa1100_register_uart_fns(&simpad_port_fns);
 150         sa1100_register_uart(0, 3);  /* serial interface */
 151         sa1100_register_uart(1, 1);  /* DECT             */
 152
 153         // Reassign UART 1 pins
 154         GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
 155         GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
 156         GPDR &= ~GPIO_UART_RXD;
 157         PPAR |= PPAR_UPR;
 158
 159         /*
 160          * Set up registers for sleep mode.
 161          */
 162
 163
 164         PWER = PWER_GPIO0| PWER_RTC;
 165         PGSR = 0x818;
 166         PCFR = 0;
 167         PSDR = 0;
 168
 169         sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
 170                               ARRAY_SIZE(simpad_flash_resources));
 171         sa11x0_register_mcp(&simpad_mcp_data);
 172 }
 173
 174 static void simpad_power_off(void)
 175 {
 176         local_irq_disable(); // was cli
 177         set_cs3(0x800);        /* only SD_MEDIAQ */
 178
 179         /* disable internal oscillator, float CS lines */
 180         PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
 181         /* enable wake-up on GPIO0 (Assabet...) */
 182         PWER = GFER = GRER = 1;
 183         /*
 184          * set scratchpad to zero, just in case it is used as a
 185          * restart address by the bootloader.
 186          */
 187         PSPR = 0;
 188         PGSR = 0;
 189         /* enter sleep mode */
 190         PMCR = PMCR_SF;
 191         while(1);
 192
 193         local_irq_enable(); /* we won't ever call it */
 194
 195
 196 }
 197
 198
 199 /*
 200  * MediaQ Video Device
 201  */
 202 static struct platform_device simpad_mq200fb = {
 203         .name = "simpad-mq200",
 204         .id   = 0,
 205 };
 206
 207 static struct platform_device *devices[] __initdata = {
 208         &simpad_mq200fb
 209 };
 210
 211
 212
 213 static int __init simpad_init(void)
 214 {
 215         int ret;
 216
 217         pm_power_off = simpad_power_off;
 218
 219         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 220         if(ret)
 221                 printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");
 222
 223         return 0;
 224 }
 225
 226 arch_initcall(simpad_init);
 227
 228
 229 MACHINE_START(SIMPAD, "Simpad")
 230         /* Maintainer: Holger Freyther */
 231         .phys_io        = 0x80000000,
 232         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 233         .boot_params    = 0xc0000100,
 234         .map_io         = simpad_map_io,
 235         .init_irq       = sa1100_init_irq,
 236         .timer          = &sa1100_timer,
 237 MACHINE_END