LXR linux/arch/sh/boards/board-polaris.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * June 2006 Steve Glendinning <steve.glendinning@shawell.net>
   4 *
   5 * Polaris-specific resource declaration
   6 *
   7 */
   8
   9#include <linux/init.h>
  10#include <linux/interrupt.h>
  11#include <linux/irq.h>
  12#include <linux/platform_device.h>
  13#include <linux/regulator/fixed.h>
  14#include <linux/regulator/machine.h>
  15#include <linux/smsc911x.h>
  16#include <linux/io.h>
  17#include <asm/irq.h>
  18#include <asm/machvec.h>
  19#include <asm/heartbeat.h>
  20#include <cpu/gpio.h>
  21#include <mach-se/mach/se.h>
  22
  23#define BCR2            (0xFFFFFF62)
  24#define WCR2            (0xFFFFFF66)
  25#define AREA5_WAIT_CTRL (0x1C00)
  26#define WAIT_STATES_10  (0x7)
  27
  28/* Dummy supplies, where voltage doesn't matter */
  29static struct regulator_consumer_supply dummy_supplies[] = {
  30        REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
  31        REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
  32};
  33
  34static struct resource smsc911x_resources[] = {
  35        [0] = {
  36                .name           = "smsc911x-memory",
  37                .start          = PA_EXT5,
  38                .end            = PA_EXT5 + 0x1fff,
  39                .flags          = IORESOURCE_MEM,
  40        },
  41        [1] = {
  42                .name           = "smsc911x-irq",
  43                .start          = IRQ0_IRQ,
  44                .end            = IRQ0_IRQ,
  45                .flags          = IORESOURCE_IRQ,
  46        },
  47};
  48
  49static struct smsc911x_platform_config smsc911x_config = {
  50        .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  51        .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  52        .flags          = SMSC911X_USE_32BIT,
  53        .phy_interface  = PHY_INTERFACE_MODE_MII,
  54};
  55
  56static struct platform_device smsc911x_device = {
  57        .name           = "smsc911x",
  58        .id             = 0,
  59        .num_resources  = ARRAY_SIZE(smsc911x_resources),
  60        .resource       = smsc911x_resources,
  61        .dev = {
  62                .platform_data = &smsc911x_config,
  63        },
  64};
  65
  66static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };
  67
  68static struct heartbeat_data heartbeat_data = {
  69        .bit_pos        = heartbeat_bit_pos,
  70        .nr_bits        = ARRAY_SIZE(heartbeat_bit_pos),
  71};
  72
  73static struct resource heartbeat_resource = {
  74        .start  = PORT_PCDR,
  75        .end    = PORT_PCDR,
  76        .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
  77};
  78
  79static struct platform_device heartbeat_device = {
  80        .name           = "heartbeat",
  81        .id             = -1,
  82        .dev    = {
  83                .platform_data  = &heartbeat_data,
  84        },
  85        .num_resources  = 1,
  86        .resource       = &heartbeat_resource,
  87};
  88
  89static struct platform_device *polaris_devices[] __initdata = {
  90        &smsc911x_device,
  91        &heartbeat_device,
  92};
  93
  94static int __init polaris_initialise(void)
  95{
  96        u16 wcr, bcr_mask;
  97
  98        printk(KERN_INFO "Configuring Polaris external bus\n");
  99
 100        regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 101
 102        /* Configure area 5 with 2 wait states */
 103        wcr = __raw_readw(WCR2);
 104        wcr &= (~AREA5_WAIT_CTRL);
 105        wcr |= (WAIT_STATES_10 << 10);
 106        __raw_writew(wcr, WCR2);
 107
 108        /* Configure area 5 for 32-bit access */
 109        bcr_mask = __raw_readw(BCR2);
 110        bcr_mask |= 1 << 10;
 111        __raw_writew(bcr_mask, BCR2);
 112
 113        return platform_add_devices(polaris_devices,
 114                                    ARRAY_SIZE(polaris_devices));
 115}
 116arch_initcall(polaris_initialise);
 117
 118static struct ipr_data ipr_irq_table[] = {
 119        /* External IRQs */
 120        { IRQ0_IRQ, 0,  0,  1, },       /* IRQ0 */
 121        { IRQ1_IRQ, 0,  4,  1, },       /* IRQ1 */
 122};
 123
 124static unsigned long ipr_offsets[] = {
 125        INTC_IPRC
 126};
 127
 128static struct ipr_desc ipr_irq_desc = {
 129        .ipr_offsets    = ipr_offsets,
 130        .nr_offsets     = ARRAY_SIZE(ipr_offsets),
 131
 132        .ipr_data       = ipr_irq_table,
 133        .nr_irqs        = ARRAY_SIZE(ipr_irq_table),
 134        .chip = {
 135                .name   = "sh7709-ext",
 136        },
 137};
 138
 139static void __init init_polaris_irq(void)
 140{
 141        /* Disable all interrupts */
 142        __raw_writew(0, BCR_ILCRA);
 143        __raw_writew(0, BCR_ILCRB);
 144        __raw_writew(0, BCR_ILCRC);
 145        __raw_writew(0, BCR_ILCRD);
 146        __raw_writew(0, BCR_ILCRE);
 147        __raw_writew(0, BCR_ILCRF);
 148        __raw_writew(0, BCR_ILCRG);
 149
 150        register_ipr_controller(&ipr_irq_desc);
 151}
 152
 153static struct sh_machine_vector mv_polaris __initmv = {
 154        .mv_name                = "Polaris",
 155        .mv_init_irq            = init_polaris_irq,
 156};
 157