board-polaris.c

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/*
 * June 2006 Steve Glendinning <[email protected]>
 *
 * Polaris-specific resource declaration
 *
 */

#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/smsc911x.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <asm/machvec.h>
#include <asm/heartbeat.h>
#include <cpu/gpio.h>
#include <mach-se/mach/se.h>

#define BCR2        (0xFFFFFF62)
#define WCR2        (0xFFFFFF66)
#define AREA5_WAIT_CTRL (0x1C00)
#define WAIT_STATES_10  (0x7)

/* Dummy supplies, where voltage doesn't matter */
static struct regulator_consumer_supply dummy_supplies[] = {
    REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
    REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
};

static struct resource smsc911x_resources[] = {
    [0] = {
        .name       = "smsc911x-memory",
        .start      = PA_EXT5,
        .end        = PA_EXT5 + 0x1fff,
        .flags      = IORESOURCE_MEM,
    },
    [1] = {
        .name       = "smsc911x-irq",
        .start      = IRQ0_IRQ,
        .end        = IRQ0_IRQ,
        .flags      = IORESOURCE_IRQ,
    },
};

static struct smsc911x_platform_config smsc911x_config = {
    .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
    .irq_type   = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
    .flags      = SMSC911X_USE_32BIT,
    .phy_interface  = PHY_INTERFACE_MODE_MII,
};

static struct platform_device smsc911x_device = {
    .name       = "smsc911x",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(smsc911x_resources),
    .resource   = smsc911x_resources,
    .dev = {
        .platform_data = &smsc911x_config,
    },
};

static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };

static struct heartbeat_data heartbeat_data = {
    .bit_pos    = heartbeat_bit_pos,
    .nr_bits    = ARRAY_SIZE(heartbeat_bit_pos),
};

static struct resource heartbeat_resource = {
    .start  = PORT_PCDR,
    .end    = PORT_PCDR,
    .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
};

static struct platform_device heartbeat_device = {
    .name       = "heartbeat",
    .id     = -1,
    .dev    = {
        .platform_data  = &heartbeat_data,
    },
    .num_resources  = 1,
    .resource   = &heartbeat_resource,
};

static struct platform_device *polaris_devices[] __initdata = {
    &smsc911x_device,
    &heartbeat_device,
};

static int __init polaris_initialise(void)
{
    u16 wcr, bcr_mask;

    printk(KERN_INFO "Configuring Polaris external bus\n");

    regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));

    /* Configure area 5 with 2 wait states */
    wcr = __raw_readw(WCR2);
    wcr &= (~AREA5_WAIT_CTRL);
    wcr |= (WAIT_STATES_10 << 10);
    __raw_writew(wcr, WCR2);

    /* Configure area 5 for 32-bit access */
    bcr_mask = __raw_readw(BCR2);
    bcr_mask |= 1 << 10;
    __raw_writew(bcr_mask, BCR2);

    return platform_add_devices(polaris_devices,
                    ARRAY_SIZE(polaris_devices));
}
arch_initcall(polaris_initialise);

static struct ipr_data ipr_irq_table[] = {
    /* External IRQs */
    { IRQ0_IRQ, 0,  0,  1, },   /* IRQ0 */
    { IRQ1_IRQ, 0,  4,  1, },   /* IRQ1 */
};

static unsigned long ipr_offsets[] = {
    INTC_IPRC
};

static struct ipr_desc ipr_irq_desc = {
    .ipr_offsets    = ipr_offsets,
    .nr_offsets = ARRAY_SIZE(ipr_offsets),

    .ipr_data   = ipr_irq_table,
    .nr_irqs    = ARRAY_SIZE(ipr_irq_table),
    .chip = {
        .name   = "sh7709-ext",
    },
};

static void __init init_polaris_irq(void)
{
    /* Disable all interrupts */
    __raw_writew(0, BCR_ILCRA);
    __raw_writew(0, BCR_ILCRB);
    __raw_writew(0, BCR_ILCRC);
    __raw_writew(0, BCR_ILCRD);
    __raw_writew(0, BCR_ILCRE);
    __raw_writew(0, BCR_ILCRF);
    __raw_writew(0, BCR_ILCRG);

    register_ipr_controller(&ipr_irq_desc);
}

static struct sh_machine_vector mv_polaris __initmv = {
    .mv_name        = "Polaris",
    .mv_init_irq        = init_polaris_irq,
};