| /* |
| * 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 |
| |
| 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) { |
| ret = -ENODEV; |
| goto out; |
| } |
| 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); |
| out: |
| iounmap(bcsr_regs); |
| return ret; |
| } |
| |
| /* ************************************************************************ |
| * |
| * Setup the architecture |
| * |
| */ |
| static void __init mpc837x_mds_setup_arch(void) |
| { |
| mpc83xx_setup_arch(); |
| mpc837xmds_usb_cfg(); |
| } |
| |
| machine_device_initcall(mpc837x_mds, mpc83xx_declare_of_platform_devices); |
| |
| /* |
| * Called very early, MMU is off, device-tree isn't unflattened |
| */ |
| static int __init mpc837x_mds_probe(void) |
| { |
| return of_machine_is_compatible("fsl,mpc837xmds"); |
| } |
| |
| define_machine(mpc837x_mds) { |
| .name = "MPC837x MDS", |
| .probe = mpc837x_mds_probe, |
| .setup_arch = mpc837x_mds_setup_arch, |
| .init_IRQ = mpc83xx_ipic_init_IRQ, |
| .get_irq = ipic_get_irq, |
| .restart = mpc83xx_restart, |
| .time_init = mpc83xx_time_init, |
| .calibrate_decr = generic_calibrate_decr, |
| .progress = udbg_progress, |
| }; |