target/linux/mpc85xx/files/arch/powerpc/platforms/85xx/tl_wdr4900_v1.c

   1 /*
   2  * TL-WDR4900 v1 board setup
   3  *
   4  * Copyright (c) 2013 Gabor Juhos <juhosg@openwrt.org>
   5  *
   6  * Based on:
   7  *   p1010rdb.c:
   8  *      P1010RDB Board Setup
   9  *      Copyright 2011 Freescale Semiconductor Inc.
  10  *
  11  * This program is free software; you can redistribute  it and/or modify it
  12  * under  the terms of  the GNU General  Public License as published by the
  13  * Free Software Foundation;  either version 2 of the  License, or (at your
  14  * option) any later version.
  15  */
  16
  17 #include <linux/stddef.h>
  18 #include <linux/kernel.h>
  19 #include <linux/pci.h>
  20 #include <linux/delay.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/of_platform.h>
  23 #include <linux/ath9k_platform.h>
  24 #include <linux/leds.h>
  25
  26 #include <asm/time.h>
  27 #include <asm/machdep.h>
  28 #include <asm/pci-bridge.h>
  29 #include <mm/mmu_decl.h>
  30 #include <asm/prom.h>
  31 #include <asm/udbg.h>
  32 #include <asm/mpic.h>
  33
  34 #include <sysdev/fsl_soc.h>
  35 #include <sysdev/fsl_pci.h>
  36
  37 #include "mpc85xx.h"
  38
  39 void __init tl_wdr4900_v1_pic_init(void)
  40 {
  41         struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
  42           MPIC_SINGLE_DEST_CPU,
  43           0, 256, " OpenPIC  ");
  44
  45         BUG_ON(mpic == NULL);
  46
  47         mpic_init(mpic);
  48 }
  49
  50 #ifdef CONFIG_PCI
  51 static struct gpio_led tl_wdr4900_v1_wmac_leds_gpio[] = {
  52         {
  53                 .name           = "tp-link:blue:wps",
  54                 .gpio           = 1,
  55                 .active_low     = 1,
  56         },
  57 };
  58
  59 static struct ath9k_platform_data tl_wdr4900_v1_wmac0_data = {
  60         .led_pin = 0,
  61         .eeprom_name = "pci_wmac0.eeprom",
  62         .leds = tl_wdr4900_v1_wmac_leds_gpio,
  63         .num_leds = ARRAY_SIZE(tl_wdr4900_v1_wmac_leds_gpio),
  64 };
  65
  66 static struct ath9k_platform_data tl_wdr4900_v1_wmac1_data = {
  67         .led_pin = 0,
  68         .eeprom_name = "pci_wmac1.eeprom",
  69 };
  70
  71 static void tl_wdr4900_v1_pci_wmac_fixup(struct pci_dev *dev)
  72 {
  73         if (!machine_is(tl_wdr4900_v1))
  74                 return;
  75
  76         if (dev->bus->number == 1 &&
  77             PCI_SLOT(dev->devfn) == 0) {
  78                 dev->dev.platform_data = &tl_wdr4900_v1_wmac0_data;
  79                 return;
  80         }
  81
  82         if (dev->bus->number == 3 &&
  83             PCI_SLOT(dev->devfn) == 0 &&
  84             dev->device == 0xabcd) {
  85                 dev->dev.platform_data = &tl_wdr4900_v1_wmac1_data;
  86
  87                 /*
  88                  * The PCI header of the AR9381 chip is not programmed
  89                  * correctly by the bootloader and the device uses wrong
  90                  * data due to that. Replace the broken values with the
  91                  * correct ones.
  92                  */
  93                 dev->device = 0x30;
  94                 dev->class = 0x028000;
  95
  96                 pr_info("pci %s: AR9381 fixup applied\n", pci_name(dev));
  97         }
  98 }
  99
 100 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID,
 101                         tl_wdr4900_v1_pci_wmac_fixup);
 102 #endif /* CONFIG_PCI */
 103
 104 /*
 105  * Setup the architecture
 106  */
 107 static void __init tl_wdr4900_v1_setup_arch(void)
 108 {
 109         if (ppc_md.progress)
 110                 ppc_md.progress("tl_wdr4900_v1_setup_arch()", 0);
 111
 112         fsl_pci_assign_primary();
 113
 114         printk(KERN_INFO "TL-WDR4900 v1 board from TP-Link\n");
 115 }
 116
 117 machine_arch_initcall(tl_wdr4900_v1, mpc85xx_common_publish_devices);
 118 machine_arch_initcall(tl_wdr4900_v1, swiotlb_setup_bus_notifier);
 119
 120 /*
 121  * Called very early, device-tree isn't unflattened
 122  */
 123 static int __init tl_wdr4900_v1_probe(void)
 124 {
 125         unsigned long root = of_get_flat_dt_root();
 126
 127         if (of_flat_dt_is_compatible(root, "tp-link,TL-WDR4900v1"))
 128                 return 1;
 129
 130         return 0;
 131 }
 132
 133 define_machine(tl_wdr4900_v1) {
 134         .name                   = "Freescale P1014",
 135         .probe                  = tl_wdr4900_v1_probe,
 136         .setup_arch             = tl_wdr4900_v1_setup_arch,
 137         .init_IRQ               = tl_wdr4900_v1_pic_init,
 138 #ifdef CONFIG_PCI
 139         .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
 140 #endif
 141         .get_irq                = mpic_get_irq,
 142         .restart                = fsl_rstcr_restart,
 143         .calibrate_decr         = generic_calibrate_decr,
 144         .progress               = udbg_progress,
 145 };