LXR linux/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 */
  28static struct regulator_consumer_supply dummy_supplies[] = {
  29        REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
  30        REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
  31};
  32
  33static 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
  48static 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
  55static 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
  65static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };
  66
  67static struct heartbeat_data heartbeat_data = {
  68        .bit_pos        = heartbeat_bit_pos,
  69        .nr_bits        = ARRAY_SIZE(heartbeat_bit_pos),
  70};
  71
  72static struct resource heartbeat_resource = {
  73        .start  = PORT_PCDR,
  74        .end    = PORT_PCDR,
  75        .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
  76};
  77
  78static 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
  88static struct platform_device *polaris_devices[] __initdata = {
  89        &smsc911x_device,
  90        &heartbeat_device,
  91};
  92
  93static 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}
 115arch_initcall(polaris_initialise);
 116
 117static 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
 123static unsigned long ipr_offsets[] = {
 124        INTC_IPRC
 125};
 126
 127static 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
 138static 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
 152static struct sh_machine_vector mv_polaris __initmv = {
 153        .mv_name                = "Polaris",
 154        .mv_init_irq            = init_polaris_irq,
 155};
 156