target/linux/ar71xx/files/arch/mips/ath79/mach-wnr2200.c

   1 /*
   2  *  NETGEAR WNR2200 board support
   3  *
   4  *  Copyright (C) 2013 Aidan Kissane <aidankissane at googlemail.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify it
   7  *  under the terms of the GNU General Public License version 2 as published
   8  *  by the Free Software Foundation.
   9  */
  10
  11 #include <linux/gpio.h>
  12
  13 #include <linux/mtd/mtd.h>
  14 #include <linux/mtd/partitions.h>
  15 #include <linux/kernel.h> /* for max() macro */
  16
  17 #include <asm/mach-ath79/ath79.h>
  18
  19 #include "dev-ap9x-pci.h"
  20 #include "dev-eth.h"
  21 #include "dev-gpio-buttons.h"
  22 #include "dev-leds-gpio.h"
  23 #include "dev-m25p80.h"
  24 #include "dev-usb.h"
  25 #include "machtypes.h"
  26
  27 #define WNR2200_GPIO_LED_LAN2_AMBER     0
  28 #define WNR2200_GPIO_LED_LAN4_AMBER     1
  29 #define WNR2200_GPIO_LED_WPS            5
  30 #define WNR2200_GPIO_LED_WAN_GREEN      7
  31 #define WNR2200_GPIO_LED_USB            8
  32 #define WNR2200_GPIO_LED_LAN3_AMBER     11
  33 #define WNR2200_GPIO_LED_WAN_AMBER      12
  34 #define WNR2200_GPIO_LED_LAN1_GREEN     13
  35 #define WNR2200_GPIO_LED_LAN2_GREEN     14
  36 #define WNR2200_GPIO_LED_LAN3_GREEN     15
  37 #define WNR2200_GPIO_LED_LAN4_GREEN     16
  38 #define WNR2200_GPIO_LED_PWR_AMBER      21
  39 #define WNR2200_GPIO_LED_PWR_GREEN      22
  40 #define WNR2200_GPIO_USB_5V             4
  41 #define WNR2200_GPIO_USB_POWER          24
  42
  43 #define WNR2200_KEYS_POLL_INTERVAL      20 /* msecs */
  44 #define WNR2200_KEYS_DEBOUNCE_INTERVAL  (3 * WNR2200_KEYS_POLL_INTERVAL)
  45
  46 #define WNR2200_MAC0_OFFSET             0
  47 #define WNR2200_MAC1_OFFSET             6
  48 #define WNR2200_PCIE_CALDATA_OFFSET     0x1000
  49 #define WNR2200_WMAC_OFFSET             0x108c  /* wireless MAC is inside ART */
  50
  51 static struct gpio_led wnr2200_leds_gpio[] __initdata = {
  52         {
  53                 .name           = "netgear:amber:lan2",
  54                 .gpio           = WNR2200_GPIO_LED_LAN2_AMBER,
  55                 .active_low     = 1,
  56         }, {
  57                 .name           = "netgear:amber:lan4",
  58                 .gpio           = WNR2200_GPIO_LED_LAN4_AMBER,
  59                 .active_low     = 1,
  60         }, {
  61                 .name           = "netgear:green:wps",
  62                 .gpio           = WNR2200_GPIO_LED_WPS,
  63                 .active_low     = 1,
  64         }, {
  65                 .name           = "netgear:green:wan",
  66                 .gpio           = WNR2200_GPIO_LED_WAN_GREEN,
  67                 .active_low     = 1,
  68         }, {
  69                 .name           = "netgear:green:usb",
  70                 .gpio           = WNR2200_GPIO_LED_USB,
  71                 .active_low     = 1,
  72         }, {
  73                 .name           = "netgear:amber:lan3",
  74                 .gpio           = WNR2200_GPIO_LED_LAN3_AMBER,
  75                 .active_low     = 1,
  76         }, {
  77                 .name           = "netgear:amber:wan",
  78                 .gpio           = WNR2200_GPIO_LED_WAN_AMBER,
  79                 .active_low     = 1,
  80         }, {
  81                 .name           = "netgear:green:lan1",
  82                 .gpio           = WNR2200_GPIO_LED_LAN1_GREEN,
  83                 .active_low     = 1,
  84         }, {
  85                 .name           = "netgear:green:lan2",
  86                 .gpio           = WNR2200_GPIO_LED_LAN2_GREEN,
  87                 .active_low     = 1,
  88         }, {
  89                 .name           = "netgear:green:lan3",
  90                 .gpio           = WNR2200_GPIO_LED_LAN3_GREEN,
  91                 .active_low     = 1,
  92         }, {
  93                 .name           = "netgear:green:lan4",
  94                 .gpio           = WNR2200_GPIO_LED_LAN4_GREEN,
  95                 .active_low     = 1,
  96         }, {
  97                 .name           = "netgear:amber:power",
  98                 .gpio           = WNR2200_GPIO_LED_PWR_AMBER,
  99                 .active_low     = 1,
 100         }, {
 101                 .name           = "netgear:green:power",
 102                 .gpio           = WNR2200_GPIO_LED_PWR_GREEN,
 103                 .active_low     = 1,
 104         }
 105 };
 106
 107 /*
 108  * For WNR2200 ART flash area used for WLAN MAC is usually empty (0xff)
 109  * so ath9k driver uses random MAC instead each time module is loaded.
 110  * OpenWrt's original fix was to copy eth1 address to WLAN interface.
 111  * New solution does not duplicate hardware addresses and is taken from
 112  * WNR2000v3 code. It assigns permanent WLAN MAC equal to ethN's MAC
 113  * plus 1, so network interfaces get sequential addresses.
 114  * If ART wireless MAC address field has been filled by user, use it.
 115  */
 116 static void __init wnr2200_get_wmac(u8 *wmac_gen_addr, int mac0_art_offset,
 117                                     int mac1_art_offset, int wmac_art_offset)
 118 {
 119         u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
 120         u8 *eth0_mac_addr = (u8 *) (art + mac0_art_offset);
 121         u8 *eth1_mac_addr = (u8 *) (art + mac1_art_offset);
 122         u8 *wlan_mac_addr = (u8 *) (art + wmac_art_offset);
 123
 124         /* only 0xff if all bits are set - address is invalid, empty area */
 125         if ((wlan_mac_addr[0] & wlan_mac_addr[1] & wlan_mac_addr[2] &
 126              wlan_mac_addr[3] & wlan_mac_addr[4] & wlan_mac_addr[5]) == 0xff) {
 127                 memcpy(wmac_gen_addr, eth0_mac_addr, 5);
 128                 wmac_gen_addr[5] = max(eth0_mac_addr[5], eth1_mac_addr[5]) + 1;
 129
 130                 /* Avoid potential conflict in case max(0xff,0x00)+1==0x00 */
 131                 if (!wmac_gen_addr[5])
 132                         wmac_gen_addr[5] = 1;
 133         } else
 134                 memcpy(wmac_gen_addr, wlan_mac_addr, 6);
 135 }
 136
 137 static void __init wnr2200_setup(void)
 138 {
 139         u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
 140         u8 wlan_mac_addr[6];
 141
 142         ath79_register_mdio(0, 0x0);
 143
 144         ath79_init_mac(ath79_eth0_data.mac_addr, art+WNR2200_MAC0_OFFSET, 0);
 145         ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RMII;
 146         ath79_eth0_data.speed = SPEED_100;
 147         ath79_eth0_data.duplex = DUPLEX_FULL;
 148
 149         ath79_init_mac(ath79_eth1_data.mac_addr, art+WNR2200_MAC1_OFFSET, 0);
 150         ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_RMII;
 151         ath79_eth1_data.phy_mask = 0x10;
 152
 153         ath79_register_eth(0);
 154         ath79_register_eth(1);
 155
 156         ath79_register_m25p80(NULL);
 157
 158         wnr2200_get_wmac(wlan_mac_addr, WNR2200_MAC0_OFFSET,
 159                          WNR2200_MAC1_OFFSET, WNR2200_WMAC_OFFSET);
 160         ap91_pci_init(art + WNR2200_PCIE_CALDATA_OFFSET, wlan_mac_addr);
 161
 162         ath79_register_leds_gpio(-1, ARRAY_SIZE(wnr2200_leds_gpio),
 163                                         wnr2200_leds_gpio);
 164
 165         /* enable power for the USB port */
 166         ap9x_pci_setup_wmac_gpio(0,
 167                 BIT(WNR2200_GPIO_USB_5V),
 168                 BIT(WNR2200_GPIO_USB_5V));
 169
 170         ath79_register_usb();
 171 }
 172
 173 MIPS_MACHINE(ATH79_MACH_WNR2200, "WNR2200", "NETGEAR WNR2200", wnr2200_setup);