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 #include <asm/mach-ath79/ar71xx_regs.h> /* needed to disable switch LEDs */
  19 #include "common.h" /* needed to disable switch LEDs */
  20
  21 #include "dev-ap9x-pci.h"
  22 #include "dev-eth.h"
  23 #include "dev-gpio-buttons.h"
  24 #include "dev-leds-gpio.h"
  25 #include "dev-m25p80.h"
  26 #include "dev-usb.h"
  27 #include "machtypes.h"
  28
  29 /* WNR2200 - connected through AR7241 */
  30 #define WNR2200_GPIO_LED_LAN2_AMBER     0
  31 #define WNR2200_GPIO_LED_LAN4_AMBER     1
  32 #define WNR2200_GPIO_LED_LAN1_AMBER     6 /* AR724X_GPIO_FUNC_JTAG_DISABLE */
  33 #define WNR2200_GPIO_LED_WPS_GREEN      7 /* AR724X_GPIO_FUNC_JTAG_DISABLE */
  34 #define WNR2200_GPIO_LED_USB_GREEN      8 /* AR724X_GPIO_FUNC_JTAG_DISABLE */
  35 #define WNR2200_GPIO_LED_LAN3_AMBER     11
  36 #define WNR2200_GPIO_LED_WAN_AMBER      12
  37 #define WNR2200_GPIO_LED_LAN1_GREEN     13 /* AR724X_..._ETH_SWITCH_LED0 */
  38 #define WNR2200_GPIO_LED_LAN2_GREEN     14 /* AR724X_..._ETH_SWITCH_LED1 */
  39 #define WNR2200_GPIO_LED_LAN3_GREEN     15 /* AR724X_..._ETH_SWITCH_LED2 */
  40 #define WNR2200_GPIO_LED_LAN4_GREEN     16 /* AR724X_..._ETH_SWITCH_LED3 */
  41 #define WNR2200_GPIO_LED_WAN_GREEN      17 /* AR724X_..._ETH_SWITCH_LED4 */
  42
  43 /* WNR2200 - connected through AR9287 */
  44 #define WNR2200_GPIO_WMAC_LED_WLAN_BLUE         0
  45 #define WNR2200_GPIO_WMAC_LED_TEST_AMBER        1
  46 #define WNR2200_GPIO_WMAC_LED_POWER_GREEN       2
  47 #define WNR2200_GPIO_WMAC_BTN_RFKILL            3
  48 #define WNR2200_GPIO_WMAC_USB_5V                4
  49 #define WNR2200_GPIO_WMAC_BTN_WPS               5
  50 #define WNR2200_GPIO_WMAC_BTN_RESET             6
  51
  52 #define WNR2200_KEYS_POLL_INTERVAL      20 /* msecs */
  53 #define WNR2200_KEYS_DEBOUNCE_INTERVAL  (3 * WNR2200_KEYS_POLL_INTERVAL)
  54
  55 #define WNR2200_MAC0_OFFSET             0
  56 #define WNR2200_MAC1_OFFSET             6
  57 #define WNR2200_PCIE_CALDATA_OFFSET     0x1000
  58 #define WNR2200_WMAC_OFFSET             0x108c  /* wireless MAC is inside ART */
  59
  60 static struct gpio_led wnr2200_leds_gpio[] __initdata = {
  61         {
  62                 .name           = "netgear:amber:lan1",
  63                 .gpio           = WNR2200_GPIO_LED_LAN1_AMBER,
  64                 .active_low     = 1,
  65         }, {
  66                 .name           = "netgear:amber:lan2",
  67                 .gpio           = WNR2200_GPIO_LED_LAN2_AMBER,
  68                 .active_low     = 1,
  69         }, {
  70                 .name           = "netgear:amber:lan3",
  71                 .gpio           = WNR2200_GPIO_LED_LAN3_AMBER,
  72                 .active_low     = 1,
  73         }, {
  74                 .name           = "netgear:amber:lan4",
  75                 .gpio           = WNR2200_GPIO_LED_LAN4_AMBER,
  76                 .active_low     = 1,
  77         }, {
  78                 .name           = "netgear:amber:wan",
  79                 .gpio           = WNR2200_GPIO_LED_WAN_AMBER,
  80                 .active_low     = 1,
  81         }, {
  82                 .name           = "netgear:green:lan1",
  83                 .gpio           = WNR2200_GPIO_LED_LAN1_GREEN,
  84                 .active_low     = 1,
  85         }, {
  86                 .name           = "netgear:green:lan2",
  87                 .gpio           = WNR2200_GPIO_LED_LAN2_GREEN,
  88                 .active_low     = 1,
  89         }, {
  90                 .name           = "netgear:green:lan3",
  91                 .gpio           = WNR2200_GPIO_LED_LAN3_GREEN,
  92                 .active_low     = 1,
  93         }, {
  94                 .name           = "netgear:green:lan4",
  95                 .gpio           = WNR2200_GPIO_LED_LAN4_GREEN,
  96                 .active_low     = 1,
  97         }, {
  98                 .name           = "netgear:green:usb",
  99                 .gpio           = WNR2200_GPIO_LED_USB_GREEN,
 100                 .active_low     = 1,
 101         }, {
 102                 .name           = "netgear:green:wan",
 103                 .gpio           = WNR2200_GPIO_LED_WAN_GREEN,
 104                 .active_low     = 1,
 105         }, {
 106                 .name           = "netgear:green:wps",
 107                 .gpio           = WNR2200_GPIO_LED_WPS_GREEN,
 108                 .active_low     = 1,
 109         }
 110 };
 111
 112 static struct gpio_led wnr2200_wmac_leds_gpio[] = {
 113         {
 114                 .name           = "netgear:amber:test",
 115                 .gpio           = WNR2200_GPIO_WMAC_LED_TEST_AMBER,
 116                 .active_low     = 1,
 117         }, {
 118                 .name           = "netgear:green:power",
 119                 .gpio           = WNR2200_GPIO_WMAC_LED_POWER_GREEN,
 120                 .active_low     = 1,
 121                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
 122         }, {
 123                 .name           = "netgear:blue:wlan",
 124                 .gpio           = WNR2200_GPIO_WMAC_LED_WLAN_BLUE,
 125                 .active_low     = 1,
 126         }
 127 };
 128
 129 static struct gpio_keys_button wnr2200_wmac_keys_gpio[] = {
 130         {
 131                 .desc           = "reset",
 132                 .type           = EV_KEY,
 133                 .code           = KEY_RESTART,
 134                 .debounce_interval = WNR2200_KEYS_DEBOUNCE_INTERVAL,
 135                 .gpio           = WNR2200_GPIO_WMAC_BTN_RESET,
 136                 .active_low     = 1,
 137         }, {
 138                 .desc           = "rfkill",
 139                 .type           = EV_KEY,
 140                 .code           = KEY_RFKILL,
 141                 .debounce_interval = WNR2200_KEYS_DEBOUNCE_INTERVAL,
 142                 .gpio           = WNR2200_GPIO_WMAC_BTN_RFKILL,
 143                 .active_low     = 1,
 144         }, {
 145                 .desc           = "wps",
 146                 .type           = EV_KEY,
 147                 .code           = KEY_WPS_BUTTON,
 148                 .debounce_interval = WNR2200_KEYS_DEBOUNCE_INTERVAL,
 149                 .gpio           = WNR2200_GPIO_WMAC_BTN_WPS,
 150                 .active_low     = 1,
 151         }
 152 };
 153
 154 /*
 155  * For WNR2200 ART flash area used for WLAN MAC is usually empty (0xff)
 156  * so ath9k driver uses random MAC instead each time module is loaded.
 157  * OpenWrt's original fix was to copy eth1 address to WLAN interface.
 158  * New solution does not duplicate hardware addresses and is taken from
 159  * WNR2000v3 code. It assigns permanent WLAN MAC equal to ethN's MAC
 160  * plus 1, so network interfaces get sequential addresses.
 161  * If ART wireless MAC address field has been filled by user, use it.
 162  */
 163 static void __init wnr2200_get_wmac(u8 *wmac_gen_addr, int mac0_art_offset,
 164                                     int mac1_art_offset, int wmac_art_offset)
 165 {
 166         u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
 167         u8 *eth0_mac_addr = (u8 *) (art + mac0_art_offset);
 168         u8 *eth1_mac_addr = (u8 *) (art + mac1_art_offset);
 169         u8 *wlan_mac_addr = (u8 *) (art + wmac_art_offset);
 170
 171         /* only 0xff if all bits are set - address is invalid, empty area */
 172         if ((wlan_mac_addr[0] & wlan_mac_addr[1] & wlan_mac_addr[2] &
 173              wlan_mac_addr[3] & wlan_mac_addr[4] & wlan_mac_addr[5]) == 0xff) {
 174                 memcpy(wmac_gen_addr, eth0_mac_addr, 5);
 175                 wmac_gen_addr[5] = max(eth0_mac_addr[5], eth1_mac_addr[5]) + 1;
 176
 177                 /* Avoid potential conflict in case max(0xff,0x00)+1==0x00 */
 178                 if (!wmac_gen_addr[5])
 179                         wmac_gen_addr[5] = 1;
 180         } else
 181                 memcpy(wmac_gen_addr, wlan_mac_addr, 6);
 182 }
 183
 184 static void __init wnr2200_setup(void)
 185 {
 186         u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
 187         u8 wlan_mac_addr[6];
 188
 189         /*
 190          * Disable JTAG to use all AR724X GPIO LEDs. Disable CLKs.
 191          * Allow OS to control all link LEDs.
 192          */
 193         ath79_gpio_function_setup(AR724X_GPIO_FUNC_JTAG_DISABLE |
 194                                   AR724X_GPIO_FUNC_UART_EN,
 195                                   AR724X_GPIO_FUNC_CLK_OBS1_EN |
 196                                   AR724X_GPIO_FUNC_CLK_OBS2_EN |
 197                                   AR724X_GPIO_FUNC_CLK_OBS3_EN |
 198                                   AR724X_GPIO_FUNC_CLK_OBS4_EN |
 199                                   AR724X_GPIO_FUNC_CLK_OBS5_EN |
 200                                   AR724X_GPIO_FUNC_GE0_MII_CLK_EN |
 201                                   AR724X_GPIO_FUNC_ETH_SWITCH_LED0_EN |
 202                                   AR724X_GPIO_FUNC_ETH_SWITCH_LED1_EN |
 203                                   AR724X_GPIO_FUNC_ETH_SWITCH_LED2_EN |
 204                                   AR724X_GPIO_FUNC_ETH_SWITCH_LED3_EN |
 205                                   AR724X_GPIO_FUNC_ETH_SWITCH_LED4_EN);
 206
 207         ath79_register_mdio(0, 0x0);
 208
 209         ath79_init_mac(ath79_eth0_data.mac_addr, art + WNR2200_MAC0_OFFSET, 0);
 210         ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RMII;
 211         ath79_eth0_data.speed = SPEED_100;
 212         ath79_eth0_data.duplex = DUPLEX_FULL;
 213
 214         ath79_init_mac(ath79_eth1_data.mac_addr, art + WNR2200_MAC1_OFFSET, 0);
 215         ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_RMII;
 216         ath79_eth1_data.phy_mask = 0x10;
 217
 218         ath79_register_eth(0);
 219         ath79_register_eth(1);
 220
 221         ath79_register_m25p80(NULL);
 222
 223         wnr2200_get_wmac(wlan_mac_addr, WNR2200_MAC0_OFFSET,
 224                          WNR2200_MAC1_OFFSET, WNR2200_WMAC_OFFSET);
 225         ap91_pci_init(art + WNR2200_PCIE_CALDATA_OFFSET, wlan_mac_addr);
 226
 227         ath79_register_leds_gpio(-1, ARRAY_SIZE(wnr2200_leds_gpio),
 228                                  wnr2200_leds_gpio);
 229
 230         ap9x_pci_setup_wmac_leds(0, wnr2200_wmac_leds_gpio,
 231                                  ARRAY_SIZE(wnr2200_wmac_leds_gpio));
 232
 233         /* All 3 buttons are connected to wireless chip */
 234         ap9x_pci_setup_wmac_btns(0, wnr2200_wmac_keys_gpio,
 235                                  ARRAY_SIZE(wnr2200_wmac_keys_gpio),
 236                                  WNR2200_KEYS_POLL_INTERVAL);
 237
 238         /* enable power for the USB port */
 239         ap9x_pci_setup_wmac_gpio(0, BIT(WNR2200_GPIO_WMAC_USB_5V),
 240                                  BIT(WNR2200_GPIO_WMAC_USB_5V));
 241
 242         ath79_register_usb();
 243 }
 244
 245 MIPS_MACHINE(ATH79_MACH_WNR2200, "WNR2200", "NETGEAR WNR2200", wnr2200_setup);