arch/sh/boards/board-polaris.c

   1 /*
   2  * June 2006 steve.glendinning@smsc.com
   3  *
   4  * Polaris-specific resource declaration
   5  *
   6  */
   7
   8 #include <linux/init.h>
   9 #include <linux/interrupt.h>
  10 #include <linux/irq.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/smsc911x.h>
  13 #include <linux/io.h>
  14 #include <asm/irq.h>
  15 #include <asm/machvec.h>
  16 #include <asm/heartbeat.h>
  17 #include <cpu/gpio.h>
  18 #include <mach-se/mach/se.h>
  19
  20 #define BCR2            (0xFFFFFF62)
  21 #define WCR2            (0xFFFFFF66)
  22 #define AREA5_WAIT_CTRL (0x1C00)
  23 #define WAIT_STATES_10  (0x7)
  24
  25 static struct resource smsc911x_resources[] = {
  26         [0] = {
  27                 .name           = "smsc911x-memory",
  28                 .start          = PA_EXT5,
  29                 .end            = PA_EXT5 + 0x1fff,
  30                 .flags          = IORESOURCE_MEM,
  31         },
  32         [1] = {
  33                 .name           = "smsc911x-irq",
  34                 .start          = IRQ0_IRQ,
  35                 .end            = IRQ0_IRQ,
  36                 .flags          = IORESOURCE_IRQ,
  37         },
  38 };
  39
  40 static struct smsc911x_platform_config smsc911x_config = {
  41         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  42         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  43         .flags          = SMSC911X_USE_32BIT,
  44         .phy_interface  = PHY_INTERFACE_MODE_MII,
  45 };
  46
  47 static struct platform_device smsc911x_device = {
  48         .name           = "smsc911x",
  49         .id             = 0,
  50         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  51         .resource       = smsc911x_resources,
  52         .dev = {
  53                 .platform_data = &smsc911x_config,
  54         },
  55 };
  56
  57 static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };
  58
  59 static struct heartbeat_data heartbeat_data = {
  60         .bit_pos        = heartbeat_bit_pos,
  61         .nr_bits        = ARRAY_SIZE(heartbeat_bit_pos),
  62 };
  63
  64 static struct resource heartbeat_resource = {
  65         .start  = PORT_PCDR,
  66         .end    = PORT_PCDR,
  67         .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
  68 };
  69
  70 static struct platform_device heartbeat_device = {
  71         .name           = "heartbeat",
  72         .id             = -1,
  73         .dev    = {
  74                 .platform_data  = &heartbeat_data,
  75         },
  76         .num_resources  = 1,
  77         .resource       = &heartbeat_resource,
  78 };
  79
  80 static struct platform_device *polaris_devices[] __initdata = {
  81         &smsc911x_device,
  82         &heartbeat_device,
  83 };
  84
  85 static int __init polaris_initialise(void)
  86 {
  87         u16 wcr, bcr_mask;
  88
  89         printk(KERN_INFO "Configuring Polaris external bus\n");
  90
  91         /* Configure area 5 with 2 wait states */
  92         wcr = __raw_readw(WCR2);
  93         wcr &= (~AREA5_WAIT_CTRL);
  94         wcr |= (WAIT_STATES_10 << 10);
  95         __raw_writew(wcr, WCR2);
  96
  97         /* Configure area 5 for 32-bit access */
  98         bcr_mask = __raw_readw(BCR2);
  99         bcr_mask |= 1 << 10;
 100         __raw_writew(bcr_mask, BCR2);
 101
 102         return platform_add_devices(polaris_devices,
 103                                     ARRAY_SIZE(polaris_devices));
 104 }
 105 arch_initcall(polaris_initialise);
 106
 107 static struct ipr_data ipr_irq_table[] = {
 108         /* External IRQs */
 109         { IRQ0_IRQ, 0,  0,  1, },       /* IRQ0 */
 110         { IRQ1_IRQ, 0,  4,  1, },       /* IRQ1 */
 111 };
 112
 113 static unsigned long ipr_offsets[] = {
 114         INTC_IPRC
 115 };
 116
 117 static struct ipr_desc ipr_irq_desc = {
 118         .ipr_offsets    = ipr_offsets,
 119         .nr_offsets     = ARRAY_SIZE(ipr_offsets),
 120
 121         .ipr_data       = ipr_irq_table,
 122         .nr_irqs        = ARRAY_SIZE(ipr_irq_table),
 123         .chip = {
 124                 .name   = "sh7709-ext",
 125         },
 126 };
 127
 128 static void __init init_polaris_irq(void)
 129 {
 130         /* Disable all interrupts */
 131         __raw_writew(0, BCR_ILCRA);
 132         __raw_writew(0, BCR_ILCRB);
 133         __raw_writew(0, BCR_ILCRC);
 134         __raw_writew(0, BCR_ILCRD);
 135         __raw_writew(0, BCR_ILCRE);
 136         __raw_writew(0, BCR_ILCRF);
 137         __raw_writew(0, BCR_ILCRG);
 138
 139         register_ipr_controller(&ipr_irq_desc);
 140 }
 141
 142 static struct sh_machine_vector mv_polaris __initmv = {
 143         .mv_name                = "Polaris",
 144         .mv_init_irq            = init_polaris_irq,
 145 };