kernel/arch/sh/boards/board-polaris.c

   1 /*
   2  * June 2006 Steve Glendinning <steve.glendinning@shawell.net>
   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/regulator/fixed.h>
  13 #include <linux/regulator/machine.h>
  14 #include <linux/smsc911x.h>
  15 #include <linux/io.h>
  16 #include <asm/irq.h>
  17 #include <asm/machvec.h>
  18 #include <asm/heartbeat.h>
  19 #include <cpu/gpio.h>
  20 #include <mach-se/mach/se.h>
  21
  22 #define BCR2            (0xFFFFFF62)
  23 #define WCR2            (0xFFFFFF66)
  24 #define AREA5_WAIT_CTRL (0x1C00)
  25 #define WAIT_STATES_10  (0x7)
  26
  27 /* Dummy supplies, where voltage doesn't matter */
  28 static struct regulator_consumer_supply dummy_supplies[] = {
  29         REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
  30         REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
  31 };
  32
  33 static struct resource smsc911x_resources[] = {
  34         [0] = {
  35                 .name           = "smsc911x-memory",
  36                 .start          = PA_EXT5,
  37                 .end            = PA_EXT5 + 0x1fff,
  38                 .flags          = IORESOURCE_MEM,
  39         },
  40         [1] = {
  41                 .name           = "smsc911x-irq",
  42                 .start          = IRQ0_IRQ,
  43                 .end            = IRQ0_IRQ,
  44                 .flags          = IORESOURCE_IRQ,
  45         },
  46 };
  47
  48 static struct smsc911x_platform_config smsc911x_config = {
  49         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  50         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  51         .flags          = SMSC911X_USE_32BIT,
  52         .phy_interface  = PHY_INTERFACE_MODE_MII,
  53 };
  54
  55 static struct platform_device smsc911x_device = {
  56         .name           = "smsc911x",
  57         .id             = 0,
  58         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  59         .resource       = smsc911x_resources,
  60         .dev = {
  61                 .platform_data = &smsc911x_config,
  62         },
  63 };
  64
  65 static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };
  66
  67 static struct heartbeat_data heartbeat_data = {
  68         .bit_pos        = heartbeat_bit_pos,
  69         .nr_bits        = ARRAY_SIZE(heartbeat_bit_pos),
  70 };
  71
  72 static struct resource heartbeat_resource = {
  73         .start  = PORT_PCDR,
  74         .end    = PORT_PCDR,
  75         .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
  76 };
  77
  78 static struct platform_device heartbeat_device = {
  79         .name           = "heartbeat",
  80         .id             = -1,
  81         .dev    = {
  82                 .platform_data  = &heartbeat_data,
  83         },
  84         .num_resources  = 1,
  85         .resource       = &heartbeat_resource,
  86 };
  87
  88 static struct platform_device *polaris_devices[] __initdata = {
  89         &smsc911x_device,
  90         &heartbeat_device,
  91 };
  92
  93 static int __init polaris_initialise(void)
  94 {
  95         u16 wcr, bcr_mask;
  96
  97         printk(KERN_INFO "Configuring Polaris external bus\n");
  98
  99         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 100
 101         /* Configure area 5 with 2 wait states */
 102         wcr = __raw_readw(WCR2);
 103         wcr &= (~AREA5_WAIT_CTRL);
 104         wcr |= (WAIT_STATES_10 << 10);
 105         __raw_writew(wcr, WCR2);
 106
 107         /* Configure area 5 for 32-bit access */
 108         bcr_mask = __raw_readw(BCR2);
 109         bcr_mask |= 1 << 10;
 110         __raw_writew(bcr_mask, BCR2);
 111
 112         return platform_add_devices(polaris_devices,
 113                                     ARRAY_SIZE(polaris_devices));
 114 }
 115 arch_initcall(polaris_initialise);
 116
 117 static struct ipr_data ipr_irq_table[] = {
 118         /* External IRQs */
 119         { IRQ0_IRQ, 0,  0,  1, },       /* IRQ0 */
 120         { IRQ1_IRQ, 0,  4,  1, },       /* IRQ1 */
 121 };
 122
 123 static unsigned long ipr_offsets[] = {
 124         INTC_IPRC
 125 };
 126
 127 static struct ipr_desc ipr_irq_desc = {
 128         .ipr_offsets    = ipr_offsets,
 129         .nr_offsets     = ARRAY_SIZE(ipr_offsets),
 130
 131         .ipr_data       = ipr_irq_table,
 132         .nr_irqs        = ARRAY_SIZE(ipr_irq_table),
 133         .chip = {
 134                 .name   = "sh7709-ext",
 135         },
 136 };
 137
 138 static void __init init_polaris_irq(void)
 139 {
 140         /* Disable all interrupts */
 141         __raw_writew(0, BCR_ILCRA);
 142         __raw_writew(0, BCR_ILCRB);
 143         __raw_writew(0, BCR_ILCRC);
 144         __raw_writew(0, BCR_ILCRD);
 145         __raw_writew(0, BCR_ILCRE);
 146         __raw_writew(0, BCR_ILCRF);
 147         __raw_writew(0, BCR_ILCRG);
 148
 149         register_ipr_controller(&ipr_irq_desc);
 150 }
 151
 152 static struct sh_machine_vector mv_polaris __initmv = {
 153         .mv_name                = "Polaris",
 154         .mv_init_irq            = init_polaris_irq,
 155 };