adder875.c

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/* Analogue & Micro Adder MPC875 board support
 *
 * Author: Scott Wood <[email protected]>
 *
 * Copyright (c) 2007 Freescale Semiconductor, Inc.
 *
 * This program is free software; you can redistribute  it and/or modify
 * it under the terms of the GNU General Public License, version 2, as
 * published by the Free Software Foundation.
 */

#include <linux/init.h>
#include <linux/fs_enet_pd.h>
#include <linux/of_platform.h>

#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/cpm1.h>
#include <asm/fs_pd.h>
#include <asm/udbg.h>
#include <asm/prom.h>

#include "mpc8xx.h"

struct cpm_pin {
    int port, pin, flags;
};

static __initdata struct cpm_pin adder875_pins[] = {
    /* SMC1 */
    {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
    {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */

    /* MII1 */
    {CPM_PORTA, 0, CPM_PIN_INPUT},
    {CPM_PORTA, 1, CPM_PIN_INPUT},
    {CPM_PORTA, 2, CPM_PIN_INPUT},
    {CPM_PORTA, 3, CPM_PIN_INPUT},
    {CPM_PORTA, 4, CPM_PIN_OUTPUT},
    {CPM_PORTA, 10, CPM_PIN_OUTPUT},
    {CPM_PORTA, 11, CPM_PIN_OUTPUT},
    {CPM_PORTB, 19, CPM_PIN_INPUT},
    {CPM_PORTB, 31, CPM_PIN_INPUT},
    {CPM_PORTC, 12, CPM_PIN_INPUT},
    {CPM_PORTC, 13, CPM_PIN_INPUT},
    {CPM_PORTE, 30, CPM_PIN_OUTPUT},
    {CPM_PORTE, 31, CPM_PIN_OUTPUT},

    /* MII2 */
    {CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
    {CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
    {CPM_PORTE, 16, CPM_PIN_OUTPUT},
    {CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
    {CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
    {CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
    {CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
    {CPM_PORTE, 21, CPM_PIN_OUTPUT},
    {CPM_PORTE, 22, CPM_PIN_OUTPUT},
    {CPM_PORTE, 23, CPM_PIN_OUTPUT},
    {CPM_PORTE, 24, CPM_PIN_OUTPUT},
    {CPM_PORTE, 25, CPM_PIN_OUTPUT},
    {CPM_PORTE, 26, CPM_PIN_OUTPUT},
    {CPM_PORTE, 27, CPM_PIN_OUTPUT},
    {CPM_PORTE, 28, CPM_PIN_OUTPUT},
    {CPM_PORTE, 29, CPM_PIN_OUTPUT},
};

static void __init init_ioports(void)
{
    int i;

    for (i = 0; i < ARRAY_SIZE(adder875_pins); i++) {
        const struct cpm_pin *pin = &adder875_pins[i];
        cpm1_set_pin(pin->port, pin->pin, pin->flags);
    }

    cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);

    /* Set FEC1 and FEC2 to MII mode */
    clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
}

static void __init adder875_setup(void)
{
    cpm_reset();
    init_ioports();
}

static int __init adder875_probe(void)
{
    unsigned long root = of_get_flat_dt_root();
    return of_flat_dt_is_compatible(root, "analogue-and-micro,adder875");
}

static __initdata struct of_device_id of_bus_ids[] = {
    { .compatible = "simple-bus", },
    {},
};

static int __init declare_of_platform_devices(void)
{
    of_platform_bus_probe(NULL, of_bus_ids, NULL);
    return 0;
}
machine_device_initcall(adder875, declare_of_platform_devices);

define_machine(adder875) {
    .name = "Adder MPC875",
    .probe = adder875_probe,
    .setup_arch = adder875_setup,
    .init_IRQ = mpc8xx_pics_init,
    .get_irq = mpc8xx_get_irq,
    .restart = mpc8xx_restart,
    .calibrate_decr = generic_calibrate_decr,
    .set_rtc_time = mpc8xx_set_rtc_time,
    .get_rtc_time = mpc8xx_get_rtc_time,
    .progress = udbg_progress,
};