target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-n750.c

   1 /*
   2  *  WD My Net N750 board support
   3  *
   4  *  Copyright (C) 2013 Felix Kaechele <felix@fetzig.org>
   5  *  Copyright (C) 2013 Gabor Juhos <juhosg@openwrt.org>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify it
   8  *  under the terms of the GNU General Public License version 2 as published
   9  *  by the Free Software Foundation.
  10  */
  11
  12 #include <linux/pci.h>
  13 #include <linux/phy.h>
  14 #include <linux/gpio.h>
  15 #include <linux/delay.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/ath9k_platform.h>
  18 #include <linux/ar8216_platform.h>
  19
  20 #include <asm/mach-ath79/ar71xx_regs.h>
  21
  22 #include "common.h"
  23 #include "dev-ap9x-pci.h"
  24 #include "dev-eth.h"
  25 #include "dev-gpio-buttons.h"
  26 #include "dev-leds-gpio.h"
  27 #include "dev-m25p80.h"
  28 #include "dev-spi.h"
  29 #include "dev-usb.h"
  30 #include "dev-wmac.h"
  31 #include "machtypes.h"
  32 #include "nvram.h"
  33
  34
  35 /*
  36  * Taken from GPL bootloader source:
  37  *   board/ar7240/db12x/alpha_gpio.c
  38  */
  39 #define MYNET_N750_GPIO_LED_WIFI        11
  40 #define MYNET_N750_GPIO_LED_INTERNET    12
  41 #define MYNET_N750_GPIO_LED_WPS         13
  42 #define MYNET_N750_GPIO_LED_POWER       14
  43
  44 #define MYNET_N750_GPIO_BTN_RESET       17
  45 #define MYNET_N750_GPIO_BTN_WPS         19
  46
  47 #define MYNET_N750_GPIO_EXTERNAL_LNA0   15
  48 #define MYNET_N750_GPIO_EXTERNAL_LNA1   18
  49
  50 #define MYNET_N750_KEYS_POLL_INTERVAL   20      /* msecs */
  51 #define MYNET_N750_KEYS_DEBOUNCE_INTERVAL (3 * MYNET_N750_KEYS_POLL_INTERVAL)
  52
  53 #define MYNET_N750_WMAC_CALDATA_OFFSET  0x1000
  54 #define MYNET_N750_PCIE_CALDATA_OFFSET  0x5000
  55
  56 #define MYNET_N750_NVRAM_ADDR           0x1f058010
  57 #define MYNET_N750_NVRAM_SIZE           0x7ff0
  58
  59 static struct gpio_led mynet_n750_leds_gpio[] __initdata = {
  60         {
  61                 .name           = "wd:blue:power",
  62                 .gpio           = MYNET_N750_GPIO_LED_POWER,
  63                 .active_low     = 0,
  64         },
  65         {
  66                 .name           = "wd:blue:wps",
  67                 .gpio           = MYNET_N750_GPIO_LED_WPS,
  68                 .active_low     = 0,
  69         },
  70         {
  71                 .name           = "wd:blue:wireless",
  72                 .gpio           = MYNET_N750_GPIO_LED_WIFI,
  73                 .active_low     = 0,
  74         },
  75         {
  76                 .name           = "wd:blue:internet",
  77                 .gpio           = MYNET_N750_GPIO_LED_INTERNET,
  78                 .active_low     = 0,
  79         },
  80 };
  81
  82 static struct gpio_keys_button mynet_n750_gpio_keys[] __initdata = {
  83         {
  84                 .desc           = "Reset button",
  85                 .type           = EV_KEY,
  86                 .code           = KEY_RESTART,
  87                 .debounce_interval = MYNET_N750_KEYS_DEBOUNCE_INTERVAL,
  88                 .gpio           = MYNET_N750_GPIO_BTN_RESET,
  89                 .active_low     = 1,
  90         },
  91         {
  92                 .desc           = "WPS button",
  93                 .type           = EV_KEY,
  94                 .code           = KEY_WPS_BUTTON,
  95                 .debounce_interval = MYNET_N750_KEYS_DEBOUNCE_INTERVAL,
  96                 .gpio           = MYNET_N750_GPIO_BTN_WPS,
  97                 .active_low     = 1,
  98         },
  99 };
 100
 101 static struct ar8327_pad_cfg mynet_n750_ar8327_pad0_cfg = {
 102         .mode = AR8327_PAD_MAC_RGMII,
 103         .txclk_delay_en = true,
 104         .rxclk_delay_en = true,
 105         .txclk_delay_sel = AR8327_CLK_DELAY_SEL1,
 106         .rxclk_delay_sel = AR8327_CLK_DELAY_SEL2,
 107 };
 108
 109 static struct ar8327_led_cfg mynet_n750_ar8327_led_cfg = {
 110         .led_ctrl0 = 0xc737c737,
 111         .led_ctrl1 = 0x00000000,
 112         .led_ctrl2 = 0x00000000,
 113         .led_ctrl3 = 0x0030c300,
 114         .open_drain = false,
 115 };
 116
 117 static struct ar8327_platform_data mynet_n750_ar8327_data = {
 118         .pad0_cfg = &mynet_n750_ar8327_pad0_cfg,
 119         .port0_cfg = {
 120                 .force_link = 1,
 121                 .speed = AR8327_PORT_SPEED_1000,
 122                 .duplex = 1,
 123                 .txpause = 1,
 124                 .rxpause = 1,
 125         },
 126         .led_cfg = &mynet_n750_ar8327_led_cfg,
 127 };
 128
 129 static struct mdio_board_info mynet_n750_mdio0_info[] = {
 130         {
 131                 .bus_id = "ag71xx-mdio.0",
 132                 .phy_addr = 0,
 133                 .platform_data = &mynet_n750_ar8327_data,
 134         },
 135 };
 136
 137 static void mynet_n750_get_mac(const char *name, char *mac)
 138 {
 139         u8 *nvram = (u8 *) KSEG1ADDR(MYNET_N750_NVRAM_ADDR);
 140         int err;
 141
 142         err = ath79_nvram_parse_mac_addr(nvram, MYNET_N750_NVRAM_SIZE,
 143                                          name, mac);
 144         if (err)
 145                 pr_err("no MAC address found for %s\n", name);
 146 }
 147
 148 /*
 149  * The bootloader on this board powers down all PHYs on the switch
 150  * before booting the kernel. We bring all PHYs back up so that they are
 151  * discoverable by the mdio bus scan and the switch is detected
 152  * correctly.
 153  */
 154 static void mynet_n750_mdio_fixup(struct mii_bus *bus)
 155 {
 156         int i;
 157
 158         for (i = 0; i < 5; i++)
 159                 bus->write(bus, i, MII_BMCR,
 160                            (BMCR_RESET | BMCR_ANENABLE | BMCR_SPEED1000));
 161
 162         mdelay(1000);
 163 }
 164
 165 static void __init mynet_n750_setup(void)
 166 {
 167         u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
 168         u8 tmpmac[ETH_ALEN];
 169
 170         ath79_register_m25p80(NULL);
 171         ath79_register_leds_gpio(-1, ARRAY_SIZE(mynet_n750_leds_gpio),
 172                                  mynet_n750_leds_gpio);
 173         ath79_register_gpio_keys_polled(-1, MYNET_N750_KEYS_POLL_INTERVAL,
 174                                         ARRAY_SIZE(mynet_n750_gpio_keys),
 175                                         mynet_n750_gpio_keys);
 176         /*
 177          * Control signal for external LNAs 0 and 1
 178          * Taken from GPL bootloader source:
 179          *   board/ar7240/db12x/alpha_gpio.c
 180          */
 181         gpio_request_one(MYNET_N750_GPIO_EXTERNAL_LNA0,
 182                          GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
 183                          "External LNA0");
 184         gpio_request_one(MYNET_N750_GPIO_EXTERNAL_LNA1,
 185                          GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
 186                          "External LNA1");
 187
 188         mynet_n750_get_mac("wlan24mac=", tmpmac);
 189         ath79_register_wmac(art + MYNET_N750_WMAC_CALDATA_OFFSET, tmpmac);
 190
 191         mynet_n750_get_mac("wlan5mac=", tmpmac);
 192         ap91_pci_init(art + MYNET_N750_PCIE_CALDATA_OFFSET, tmpmac);
 193
 194         ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_RGMII_GMAC0);
 195
 196         mdiobus_register_board_info(mynet_n750_mdio0_info,
 197                                     ARRAY_SIZE(mynet_n750_mdio0_info));
 198
 199         ath79_mdio0_data.reset = mynet_n750_mdio_fixup;
 200         ath79_register_mdio(0, 0x0);
 201
 202         mynet_n750_get_mac("lanmac=", ath79_eth0_data.mac_addr);
 203
 204         /* GMAC0 is connected to an AR8327N switch */
 205         ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 206         ath79_eth0_data.phy_mask = BIT(0);
 207         ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
 208         ath79_eth0_pll_data.pll_1000 = 0x06000000;
 209         ath79_register_eth(0);
 210
 211         ath79_register_usb();
 212 }
 213
 214 MIPS_MACHINE(ATH79_MACH_MYNET_N750, "MYNET-N750", "WD My Net N750",
 215              mynet_n750_setup);