Logo Search packages:      
Sourcecode: linux version File versions

mpc837x_mds.c

/*
 * arch/powerpc/platforms/83xx/mpc837x_mds.c
 *
 * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
 *
 * MPC837x MDS board specific routines
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation;  either version 2 of the License, or (at your
 * option) any later version.
 */

#include <linux/pci.h>
#include <linux/of.h>
#include <linux/of_platform.h>

#include <asm/time.h>
#include <asm/ipic.h>
#include <asm/udbg.h>
#include <asm/prom.h>
#include <sysdev/fsl_pci.h>

#include "mpc83xx.h"

#define BCSR12_USB_SER_MASK   0x8a
#define BCSR12_USB_SER_PIN    0x80
#define BCSR12_USB_SER_DEVICE 0x02
extern int mpc837x_usb_cfg(void);

static int mpc837xmds_usb_cfg(void)
{
      struct device_node *np;
      const void *phy_type, *mode;
      void __iomem *bcsr_regs = NULL;
      u8 bcsr12;
      int ret;

      ret = mpc837x_usb_cfg();
      if (ret)
            return ret;
      /* Map BCSR area */
      np = of_find_compatible_node(NULL, NULL, "fsl,mpc837xmds-bcsr");
      if (np) {
            bcsr_regs = of_iomap(np, 0);
            of_node_put(np);
      }
      if (!bcsr_regs)
            return -1;

      np = of_find_node_by_name(NULL, "usb");
      if (!np)
            return -ENODEV;
      phy_type = of_get_property(np, "phy_type", NULL);
      if (phy_type && !strcmp(phy_type, "ulpi")) {
            clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN);
      } else if (phy_type && !strcmp(phy_type, "serial")) {
            mode = of_get_property(np, "dr_mode", NULL);
            bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK;
            bcsr12 |= BCSR12_USB_SER_PIN;
            if (mode && !strcmp(mode, "peripheral"))
                  bcsr12 |= BCSR12_USB_SER_DEVICE;
            out_8(bcsr_regs + 12, bcsr12);
      } else {
            printk(KERN_ERR "USB DR: unsupported PHY\n");
      }

      of_node_put(np);
      iounmap(bcsr_regs);
      return 0;
}

/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc837x_mds_setup_arch(void)
{
#ifdef CONFIG_PCI
      struct device_node *np;
#endif

      if (ppc_md.progress)
            ppc_md.progress("mpc837x_mds_setup_arch()", 0);

#ifdef CONFIG_PCI
      for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") {
            if (!of_device_is_available(np)) {
                  pr_warning("%s: disabled by the firmware.\n",
                           np->full_name);
                  continue;
            }
            mpc83xx_add_bridge(np);
      }
#endif
      mpc837xmds_usb_cfg();
}

static struct of_device_id mpc837x_ids[] = {
      { .type = "soc", },
      { .compatible = "soc", },
      { .compatible = "simple-bus", },
      {},
};

static int __init mpc837x_declare_of_platform_devices(void)
{
      /* Publish of_device */
      of_platform_bus_probe(NULL, mpc837x_ids, NULL);

      return 0;
}
machine_device_initcall(mpc837x_mds, mpc837x_declare_of_platform_devices);

static void __init mpc837x_mds_init_IRQ(void)
{
      struct device_node *np;

      np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
      if (!np)
            return;

      ipic_init(np, 0);

      /* Initialize the default interrupt mapping priorities,
       * in case the boot rom changed something on us.
       */
      ipic_set_default_priority();
}

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */
static int __init mpc837x_mds_probe(void)
{
        unsigned long root = of_get_flat_dt_root();

        return of_flat_dt_is_compatible(root, "fsl,mpc837xmds");
}

define_machine(mpc837x_mds) {
      .name             = "MPC837x MDS",
      .probe                  = mpc837x_mds_probe,
      .setup_arch       = mpc837x_mds_setup_arch,
      .init_IRQ         = mpc837x_mds_init_IRQ,
      .get_irq          = ipic_get_irq,
      .restart          = mpc83xx_restart,
      .time_init        = mpc83xx_time_init,
      .calibrate_decr         = generic_calibrate_decr,
      .progress         = udbg_progress,
};

Generated by  Doxygen 1.6.0   Back to index