// SPDX-License-Identifier: GPL-2.0
/*
 * June 2006 Steve Glendinning <steve.glendinning@shawell.net>
 *
 * 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,
};