arch/arm/mach-sa1100/jornada720.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/jornada720.c
   3  */
   4
   5 #include <linux/init.h>
   6 #include <linux/kernel.h>
   7 #include <linux/tty.h>
   8 #include <linux/delay.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/ioport.h>
  11
  12 #include <asm/hardware.h>
  13 #include <asm/hardware/sa1111.h>
  14 #include <asm/irq.h>
  15 #include <asm/mach-types.h>
  16 #include <asm/setup.h>
  17
  18 #include <asm/mach/arch.h>
  19 #include <asm/mach/map.h>
  20 #include <asm/mach/serial_sa1100.h>
  21
  22 #include "generic.h"
  23
  24
  25 #define JORTUCR_VAL     0x20000400
  26
  27 static struct resource sa1111_resources[] = {
  28         [0] = {
  29                 .start          = 0x40000000,
  30                 .end            = 0x40001fff,
  31                 .flags          = IORESOURCE_MEM,
  32         },
  33         [1] = {
  34                 .start          = IRQ_GPIO1,
  35                 .end            = IRQ_GPIO1,
  36                 .flags          = IORESOURCE_IRQ,
  37         },
  38 };
  39
  40 static u64 sa1111_dmamask = 0xffffffffUL;
  41
  42 static struct platform_device sa1111_device = {
  43         .name           = "sa1111",
  44         .id             = 0,
  45         .dev            = {
  46                 .dma_mask = &sa1111_dmamask,
  47                 .coherent_dma_mask = 0xffffffff,
  48         },
  49         .num_resources  = ARRAY_SIZE(sa1111_resources),
  50         .resource       = sa1111_resources,
  51 };
  52
  53 static struct platform_device *devices[] __initdata = {
  54         &sa1111_device,
  55 };
  56
  57 static int __init jornada720_init(void)
  58 {
  59         int ret = -ENODEV;
  60
  61         if (machine_is_jornada720()) {
  62                 GPDR |= GPIO_GPIO20;
  63                 TUCR = JORTUCR_VAL;     /* set the oscillator out to the SA-1101 */
  64
  65                 GPSR = GPIO_GPIO20;
  66                 udelay(1);
  67                 GPCR = GPIO_GPIO20;
  68                 udelay(1);
  69                 GPSR = GPIO_GPIO20;
  70                 udelay(20);
  71
  72                 /* LDD4 is speaker, LDD3 is microphone */
  73                 PPSR &= ~(PPC_LDD3 | PPC_LDD4);
  74                 PPDR |= PPC_LDD3 | PPC_LDD4;
  75
  76                 ret = platform_add_devices(devices, ARRAY_SIZE(devices));
  77         }
  78         return ret;
  79 }
  80
  81 arch_initcall(jornada720_init);
  82
  83 static struct map_desc jornada720_io_desc[] __initdata = {
  84         {       /* Epson registers */
  85                 .virtual        =  0xf0000000,
  86                 .pfn            = __phys_to_pfn(0x48000000),
  87                 .length         = 0x00100000,
  88                 .type           = MT_DEVICE
  89         }, {    /* Epson frame buffer */
  90                 .virtual        =  0xf1000000,
  91                 .pfn            = __phys_to_pfn(0x48200000),
  92                 .length         = 0x00100000,
  93                 .type           = MT_DEVICE
  94         }, {    /* SA-1111 */
  95                 .virtual        =  0xf4000000,
  96                 .pfn            = __phys_to_pfn(0x40000000),
  97                 .length         = 0x00100000,
  98                 .type           = MT_DEVICE
  99         }
 100 };
 101
 102 static void __init jornada720_map_io(void)
 103 {
 104         sa1100_map_io();
 105         iotable_init(jornada720_io_desc, ARRAY_SIZE(jornada720_io_desc));
 106
 107         sa1100_register_uart(0, 3);
 108         sa1100_register_uart(1, 1);
 109 }
 110
 111 MACHINE_START(JORNADA720, "HP Jornada 720")
 112         /* Maintainer: Michael Gernoth <michael@gernoth.net> */
 113         .phys_ram       = 0xc0000000,
 114         .phys_io        = 0x80000000,
 115         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 116         .boot_params    = 0xc0000100,
 117         .map_io         = jornada720_map_io,
 118         .init_irq       = sa1100_init_irq,
 119         .timer          = &sa1100_timer,
 120 MACHINE_END