board-apsh4a3a.c

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/*
 * ALPHAPROJECT AP-SH4A-3A Support.
 *
 * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
 * Copyright (C) 2008  Yoshihiro Shimoda
 * Copyright (C) 2009  Paul Mundt
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/mtd/physmap.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/smsc911x.h>
#include <linux/irq.h>
#include <linux/clk.h>
#include <asm/machvec.h>
#include <asm/sizes.h>
#include <asm/clock.h>

static struct mtd_partition nor_flash_partitions[] = {
    {
        .name       = "loader",
        .offset     = 0x00000000,
        .size       = 512 * 1024,
    },
    {
        .name       = "bootenv",
        .offset     = MTDPART_OFS_APPEND,
        .size       = 512 * 1024,
    },
    {
        .name       = "kernel",
        .offset     = MTDPART_OFS_APPEND,
        .size       = 4 * 1024 * 1024,
    },
    {
        .name       = "data",
        .offset     = MTDPART_OFS_APPEND,
        .size       = MTDPART_SIZ_FULL,
    },
};

static struct physmap_flash_data nor_flash_data = {
    .width      = 4,
    .parts      = nor_flash_partitions,
    .nr_parts   = ARRAY_SIZE(nor_flash_partitions),
};

static struct resource nor_flash_resources[] = {
    [0] = {
        .start  = 0x00000000,
        .end    = 0x01000000 - 1,
        .flags  = IORESOURCE_MEM,
    }
};

static struct platform_device nor_flash_device = {
    .name       = "physmap-flash",
    .dev        = {
        .platform_data  = &nor_flash_data,
    },
    .num_resources  = ARRAY_SIZE(nor_flash_resources),
    .resource   = nor_flash_resources,
};

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

static struct resource smsc911x_resources[] = {
    [0] = {
        .name       = "smsc911x-memory",
        .start      = 0xA4000000,
        .end        = 0xA4000000 + SZ_256 - 1,
        .flags      = IORESOURCE_MEM,
    },
    [1] = {
        .name       = "smsc911x-irq",
        .start      = evt2irq(0x200),
        .end        = evt2irq(0x200),
        .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_16BIT,
    .phy_interface  = PHY_INTERFACE_MODE_MII,
};

static struct platform_device smsc911x_device = {
    .name       = "smsc911x",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(smsc911x_resources),
    .resource   = smsc911x_resources,
    .dev = {
        .platform_data = &smsc911x_config,
    },
};

static struct platform_device *apsh4a3a_devices[] __initdata = {
    &nor_flash_device,
    &smsc911x_device,
};

static int __init apsh4a3a_devices_setup(void)
{
    regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));

    return platform_add_devices(apsh4a3a_devices,
                    ARRAY_SIZE(apsh4a3a_devices));
}
device_initcall(apsh4a3a_devices_setup);

static int apsh4a3a_clk_init(void)
{
    struct clk *clk;
    int ret;

    clk = clk_get(NULL, "extal");
    if (IS_ERR(clk))
        return PTR_ERR(clk);
    ret = clk_set_rate(clk, 33333000);
    clk_put(clk);

    return ret;
}

/* Initialize the board */
static void __init apsh4a3a_setup(char **cmdline_p)
{
    printk(KERN_INFO "Alpha Project AP-SH4A-3A support:\n");
}

static void __init apsh4a3a_init_irq(void)
{
    plat_irq_setup_pins(IRQ_MODE_IRQ7654);
}

/* Return the board specific boot mode pin configuration */
static int apsh4a3a_mode_pins(void)
{
    int value = 0;

    /* These are the factory default settings of SW1 and SW2.
     * If you change these dip switches then you will need to
     * adjust the values below as well.
     */
    value &= ~MODE_PIN0;  /* Clock Mode 16 */
    value &= ~MODE_PIN1;
    value &= ~MODE_PIN2;
    value &= ~MODE_PIN3;
    value |=  MODE_PIN4;
    value &= ~MODE_PIN5;  /* 16-bit Area0 bus width */
    value |=  MODE_PIN6;  /* Area 0 SRAM interface */
    value |=  MODE_PIN7;
    value |=  MODE_PIN8;  /* Little Endian */
    value |=  MODE_PIN9;  /* Master Mode */
    value |=  MODE_PIN10; /* Crystal resonator */
    value |=  MODE_PIN11; /* Display Unit */
    value |=  MODE_PIN12;
    value &= ~MODE_PIN13; /* 29-bit address mode */
    value |=  MODE_PIN14; /* No PLL step-up */

    return value;
}

/*
 * The Machine Vector
 */
static struct sh_machine_vector mv_apsh4a3a __initmv = {
    .mv_name        = "AP-SH4A-3A",
    .mv_setup       = apsh4a3a_setup,
    .mv_clk_init        = apsh4a3a_clk_init,
    .mv_init_irq        = apsh4a3a_init_irq,
    .mv_mode_pins       = apsh4a3a_mode_pins,
};