tqm8xx_setup.c

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/*
 * Platform setup for the MPC8xx based boards from TQM.
 *
 * Heiko Schocher <[email protected]>
 * Copyright 2010 DENX Software Engineering GmbH
 *
 * based on:
 * Vitaly Bordug <[email protected]>
 *
 * Copyright 2005 MontaVista Software Inc.
 *
 * Heavily modified by Scott Wood <[email protected]>
 * Copyright 2007 Freescale Semiconductor, Inc.
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2. This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 */

#include <linux/init.h>
#include <linux/param.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/delay.h>

#include <linux/fs_enet_pd.h>
#include <linux/fs_uart_pd.h>
#include <linux/fsl_devices.h>
#include <linux/mii.h>
#include <linux/of_platform.h>

#include <asm/delay.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/page.h>
#include <asm/processor.h>
#include <asm/time.h>
#include <asm/mpc8xx.h>
#include <asm/8xx_immap.h>
#include <asm/cpm1.h>
#include <asm/fs_pd.h>
#include <asm/udbg.h>

#include "mpc8xx.h"

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

static struct __initdata cpm_pin tqm8xx_pins[] = {
    /* SMC1 */
    {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
    {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */

    /* SCC1 */
    {CPM_PORTA, 5, CPM_PIN_INPUT}, /* CLK1 */
    {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
    {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
    {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
    {CPM_PORTC, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
    {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
    {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
};

static struct __initdata cpm_pin tqm8xx_fec_pins[] = {
    /* MII */
    {CPM_PORTD, 3, CPM_PIN_OUTPUT},
    {CPM_PORTD, 4, CPM_PIN_OUTPUT},
    {CPM_PORTD, 5, CPM_PIN_OUTPUT},
    {CPM_PORTD, 6, CPM_PIN_OUTPUT},
    {CPM_PORTD, 7, CPM_PIN_OUTPUT},
    {CPM_PORTD, 8, CPM_PIN_OUTPUT},
    {CPM_PORTD, 9, CPM_PIN_OUTPUT},
    {CPM_PORTD, 10, CPM_PIN_OUTPUT},
    {CPM_PORTD, 11, CPM_PIN_OUTPUT},
    {CPM_PORTD, 12, CPM_PIN_OUTPUT},
    {CPM_PORTD, 13, CPM_PIN_OUTPUT},
    {CPM_PORTD, 14, CPM_PIN_OUTPUT},
    {CPM_PORTD, 15, CPM_PIN_OUTPUT},
};

static void __init init_pins(int n, struct cpm_pin *pin)
{
    int i;

    for (i = 0; i < n; i++) {
        cpm1_set_pin(pin->port, pin->pin, pin->flags);
        pin++;
    }
}

static void __init init_ioports(void)
{
    struct device_node *dnode;
    struct property *prop;
    int len;

    init_pins(ARRAY_SIZE(tqm8xx_pins), &tqm8xx_pins[0]);

    cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);

    dnode = of_find_node_by_name(NULL, "aliases");
    if (dnode == NULL)
        return;
    prop = of_find_property(dnode, "ethernet1", &len);
    if (prop == NULL)
        return;

    /* init FEC pins */
    init_pins(ARRAY_SIZE(tqm8xx_fec_pins), &tqm8xx_fec_pins[0]);
}

static void __init tqm8xx_setup_arch(void)
{
    cpm_reset();
    init_ioports();
}

static int __init tqm8xx_probe(void)
{
    unsigned long node = of_get_flat_dt_root();

    return of_flat_dt_is_compatible(node, "tqc,tqm8xx");
}

static struct of_device_id __initdata of_bus_ids[] = {
    { .name = "soc", },
    { .name = "cpm", },
    { .name = "localbus", },
    { .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(tqm8xx, declare_of_platform_devices);

define_machine(tqm8xx) {
    .name           = "TQM8xx",
    .probe          = tqm8xx_probe,
    .setup_arch     = tqm8xx_setup_arch,
    .init_IRQ       = mpc8xx_pics_init,
    .get_irq        = mpc8xx_get_irq,
    .restart        = mpc8xx_restart,
    .calibrate_decr     = mpc8xx_calibrate_decr,
    .set_rtc_time       = mpc8xx_set_rtc_time,
    .get_rtc_time       = mpc8xx_get_rtc_time,
    .progress       = udbg_progress,
};