Li Yang | 833e31e | 2007-10-19 19:38:45 +0800 | [diff] [blame] | 1 | /* |
| 2 | * arch/powerpc/platforms/83xx/mpc837x_mds.c |
| 3 | * |
| 4 | * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. |
| 5 | * |
| 6 | * MPC837x MDS board specific routines |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/pci.h> |
| 15 | #include <linux/of.h> |
| 16 | #include <linux/of_platform.h> |
| 17 | |
| 18 | #include <asm/time.h> |
| 19 | #include <asm/ipic.h> |
| 20 | #include <asm/udbg.h> |
| 21 | #include <asm/prom.h> |
John Rigby | 76fe1ff | 2008-06-26 11:07:57 -0600 | [diff] [blame] | 22 | #include <sysdev/fsl_pci.h> |
Li Yang | 833e31e | 2007-10-19 19:38:45 +0800 | [diff] [blame] | 23 | |
| 24 | #include "mpc83xx.h" |
| 25 | |
Li Yang | e10241d | 2008-01-08 15:18:45 +0800 | [diff] [blame] | 26 | #define BCSR12_USB_SER_MASK 0x8a |
| 27 | #define BCSR12_USB_SER_PIN 0x80 |
| 28 | #define BCSR12_USB_SER_DEVICE 0x02 |
Li Yang | e10241d | 2008-01-08 15:18:45 +0800 | [diff] [blame] | 29 | |
| 30 | static int mpc837xmds_usb_cfg(void) |
| 31 | { |
| 32 | struct device_node *np; |
| 33 | const void *phy_type, *mode; |
| 34 | void __iomem *bcsr_regs = NULL; |
| 35 | u8 bcsr12; |
| 36 | int ret; |
| 37 | |
| 38 | ret = mpc837x_usb_cfg(); |
| 39 | if (ret) |
| 40 | return ret; |
| 41 | /* Map BCSR area */ |
Li Yang | d7f4619 | 2008-03-06 18:42:35 +0800 | [diff] [blame] | 42 | np = of_find_compatible_node(NULL, NULL, "fsl,mpc837xmds-bcsr"); |
Li Yang | e10241d | 2008-01-08 15:18:45 +0800 | [diff] [blame] | 43 | if (np) { |
Li Yang | d7f4619 | 2008-03-06 18:42:35 +0800 | [diff] [blame] | 44 | bcsr_regs = of_iomap(np, 0); |
Li Yang | e10241d | 2008-01-08 15:18:45 +0800 | [diff] [blame] | 45 | of_node_put(np); |
| 46 | } |
| 47 | if (!bcsr_regs) |
| 48 | return -1; |
| 49 | |
| 50 | np = of_find_node_by_name(NULL, "usb"); |
Julia Lawall | fa9fc82 | 2010-08-29 21:47:18 +0200 | [diff] [blame] | 51 | if (!np) { |
| 52 | ret = -ENODEV; |
| 53 | goto out; |
| 54 | } |
Li Yang | e10241d | 2008-01-08 15:18:45 +0800 | [diff] [blame] | 55 | phy_type = of_get_property(np, "phy_type", NULL); |
| 56 | if (phy_type && !strcmp(phy_type, "ulpi")) { |
| 57 | clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN); |
| 58 | } else if (phy_type && !strcmp(phy_type, "serial")) { |
| 59 | mode = of_get_property(np, "dr_mode", NULL); |
| 60 | bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK; |
| 61 | bcsr12 |= BCSR12_USB_SER_PIN; |
| 62 | if (mode && !strcmp(mode, "peripheral")) |
| 63 | bcsr12 |= BCSR12_USB_SER_DEVICE; |
| 64 | out_8(bcsr_regs + 12, bcsr12); |
| 65 | } else { |
| 66 | printk(KERN_ERR "USB DR: unsupported PHY\n"); |
| 67 | } |
| 68 | |
| 69 | of_node_put(np); |
Julia Lawall | fa9fc82 | 2010-08-29 21:47:18 +0200 | [diff] [blame] | 70 | out: |
Li Yang | e10241d | 2008-01-08 15:18:45 +0800 | [diff] [blame] | 71 | iounmap(bcsr_regs); |
Julia Lawall | fa9fc82 | 2010-08-29 21:47:18 +0200 | [diff] [blame] | 72 | return ret; |
Li Yang | e10241d | 2008-01-08 15:18:45 +0800 | [diff] [blame] | 73 | } |
| 74 | |
Li Yang | 833e31e | 2007-10-19 19:38:45 +0800 | [diff] [blame] | 75 | /* ************************************************************************ |
| 76 | * |
| 77 | * Setup the architecture |
| 78 | * |
| 79 | */ |
| 80 | static void __init mpc837x_mds_setup_arch(void) |
| 81 | { |
Li Yang | 833e31e | 2007-10-19 19:38:45 +0800 | [diff] [blame] | 82 | if (ppc_md.progress) |
| 83 | ppc_md.progress("mpc837x_mds_setup_arch()", 0); |
| 84 | |
Dmitry Eremin-Solenikov | bede480 | 2011-11-17 18:48:48 +0400 | [diff] [blame^] | 85 | mpc83xx_setup_pci(); |
Li Yang | e10241d | 2008-01-08 15:18:45 +0800 | [diff] [blame] | 86 | mpc837xmds_usb_cfg(); |
Li Yang | 833e31e | 2007-10-19 19:38:45 +0800 | [diff] [blame] | 87 | } |
| 88 | |
Dmitry Eremin-Solenikov | 7669d58 | 2011-11-17 18:48:47 +0400 | [diff] [blame] | 89 | machine_device_initcall(mpc837x_mds, mpc83xx_declare_of_platform_devices); |
Li Yang | 833e31e | 2007-10-19 19:38:45 +0800 | [diff] [blame] | 90 | |
Li Yang | 833e31e | 2007-10-19 19:38:45 +0800 | [diff] [blame] | 91 | /* |
| 92 | * Called very early, MMU is off, device-tree isn't unflattened |
| 93 | */ |
| 94 | static int __init mpc837x_mds_probe(void) |
| 95 | { |
| 96 | unsigned long root = of_get_flat_dt_root(); |
| 97 | |
| 98 | return of_flat_dt_is_compatible(root, "fsl,mpc837xmds"); |
| 99 | } |
| 100 | |
| 101 | define_machine(mpc837x_mds) { |
| 102 | .name = "MPC837x MDS", |
| 103 | .probe = mpc837x_mds_probe, |
| 104 | .setup_arch = mpc837x_mds_setup_arch, |
Dmitry Eremin-Solenikov | d4fb5eb | 2011-07-22 23:55:42 +0400 | [diff] [blame] | 105 | .init_IRQ = mpc83xx_ipic_init_IRQ, |
Li Yang | 833e31e | 2007-10-19 19:38:45 +0800 | [diff] [blame] | 106 | .get_irq = ipic_get_irq, |
| 107 | .restart = mpc83xx_restart, |
| 108 | .time_init = mpc83xx_time_init, |
| 109 | .calibrate_decr = generic_calibrate_decr, |
| 110 | .progress = udbg_progress, |
| 111 | }; |