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         .regsize        = 8,
  63 };
  64
  65 static struct resource heartbeat_resources[] = {
  66         [0] = {
  67                 .start  = PORT_PCDR,
  68                 .end    = PORT_PCDR,
  69                 .flags  = IORESOURCE_MEM,
  70         },
  71 };
  72
  73 static struct platform_device heartbeat_device = {
  74         .name           = "heartbeat",
  75         .id             = -1,
  76         .dev    = {
  77                 .platform_data  = &heartbeat_data,
  78         },
  79         .num_resources  = ARRAY_SIZE(heartbeat_resources),
  80         .resource       = heartbeat_resources,
  81 };
  82
  83 static struct platform_device *polaris_devices[] __initdata = {
  84         &smsc911x_device,
  85         &heartbeat_device,
  86 };
  87
  88 static int __init polaris_initialise(void)
  89 {
  90         u16 wcr, bcr_mask;
  91
  92         printk(KERN_INFO "Configuring Polaris external bus\n");
  93
  94         /* Configure area 5 with 2 wait states */
  95         wcr = ctrl_inw(WCR2);
  96         wcr &= (~AREA5_WAIT_CTRL);
  97         wcr |= (WAIT_STATES_10 << 10);
  98         ctrl_outw(wcr, WCR2);
  99
 100         /* Configure area 5 for 32-bit access */
 101         bcr_mask = ctrl_inw(BCR2);
 102         bcr_mask |= 1 << 10;
 103         ctrl_outw(bcr_mask, BCR2);
 104
 105         return platform_add_devices(polaris_devices,
 106                                     ARRAY_SIZE(polaris_devices));
 107 }
 108 arch_initcall(polaris_initialise);
 109
 110 static struct ipr_data ipr_irq_table[] = {
 111         /* External IRQs */
 112         { IRQ0_IRQ, 0,  0,  1, },       /* IRQ0 */
 113         { IRQ1_IRQ, 0,  4,  1, },       /* IRQ1 */
 114 };
 115
 116 static unsigned long ipr_offsets[] = {
 117         INTC_IPRC
 118 };
 119
 120 static struct ipr_desc ipr_irq_desc = {
 121         .ipr_offsets    = ipr_offsets,
 122         .nr_offsets     = ARRAY_SIZE(ipr_offsets),
 123
 124         .ipr_data       = ipr_irq_table,
 125         .nr_irqs        = ARRAY_SIZE(ipr_irq_table),
 126         .chip = {
 127                 .name   = "sh7709-ext",
 128         },
 129 };
 130
 131 static void __init init_polaris_irq(void)
 132 {
 133         /* Disable all interrupts */
 134         ctrl_outw(0, BCR_ILCRA);
 135         ctrl_outw(0, BCR_ILCRB);
 136         ctrl_outw(0, BCR_ILCRC);
 137         ctrl_outw(0, BCR_ILCRD);
 138         ctrl_outw(0, BCR_ILCRE);
 139         ctrl_outw(0, BCR_ILCRF);
 140         ctrl_outw(0, BCR_ILCRG);
 141
 142         register_ipr_controller(&ipr_irq_desc);
 143 }
 144
 145 static struct sh_machine_vector mv_polaris __initmv = {
 146         .mv_name                = "Polaris",
 147         .mv_nr_irqs             = 61,
 148         .mv_init_irq            = init_polaris_irq,
 149 };