target/linux/ar71xx/files/arch/mips/ath79/mach-tl-wr942n-v1.c

   1 /*
   2  *  TP-Link TL-WR942N(RU) v1 board support
   3  *
   4  *  Copyright (C) 2017 Sergey Studzinski <serguzhg@gmail.com>
   5  *  Thanks to Henryk Heisig <hyniu@o2.pl>
   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/platform_device.h>
  13 #include <linux/ath9k_platform.h>
  14 #include <asm/mach-ath79/ar71xx_regs.h>
  15 #include <linux/gpio.h>
  16 #include <linux/init.h>
  17 #include <linux/spi/spi_gpio.h>
  18 #include <linux/spi/74x164.h>
  19
  20 #include "common.h"
  21 #include "dev-m25p80.h"
  22 #include "machtypes.h"
  23 #include "dev-eth.h"
  24 #include "dev-gpio-buttons.h"
  25 #include "dev-leds-gpio.h"
  26 #include "dev-spi.h"
  27 #include "dev-usb.h"
  28 #include "dev-wmac.h"
  29 #include "nvram.h"
  30
  31 #define TL_WR942N_V1_KEYS_POLL_INTERVAL         20
  32 #define TL_WR942N_V1_KEYS_DEBOUNCE_INTERVAL     \
  33                                         (3 * TL_WR942N_V1_KEYS_POLL_INTERVAL)
  34
  35 #define TL_WR942N_V1_GPIO_BTN_RESET             1
  36 #define TL_WR942N_V1_GPIO_BTN_RFKILL            2
  37
  38 #define TL_WR942N_V1_GPIO_UART_TX               4
  39 #define TL_WR942N_V1_GPIO_UART_RX               5
  40
  41 #define TL_WR942N_V1_GPIO_LED_USB2              14
  42 #define TL_WR942N_V1_GPIO_LED_USB1              15
  43
  44 #define TL_WR942N_V1_GPIO_SHIFT_OE              16
  45 #define TL_WR942N_V1_GPIO_SHIFT_SER             17
  46 #define TL_WR942N_V1_GPIO_SHIFT_SRCLK           18
  47 #define TL_WR942N_V1_GPIO_SHIFT_SRCLR           19
  48 #define TL_WR942N_V1_GPIO_SHIFT_RCLK            20
  49 #define TL_WR942N_V1_GPIO_LED_WPS               21
  50 #define TL_WR942N_V1_GPIO_LED_STATUS            22
  51
  52 #define TL_WR942N_V1_74HC_GPIO_BASE             32
  53 #define TL_WR942N_V1_74HC_GPIO_LED_LAN4         (TL_WR942N_V1_74HC_GPIO_BASE + 0)
  54 #define TL_WR942N_V1_74HC_GPIO_LED_LAN3         (TL_WR942N_V1_74HC_GPIO_BASE + 1)
  55 #define TL_WR942N_V1_74HC_GPIO_LED_LAN2         (TL_WR942N_V1_74HC_GPIO_BASE + 2)
  56 #define TL_WR942N_V1_74HC_GPIO_LED_LAN1         (TL_WR942N_V1_74HC_GPIO_BASE + 3)
  57 #define TL_WR942N_V1_74HC_GPIO_LED_WAN_GREEN    (TL_WR942N_V1_74HC_GPIO_BASE + 4)
  58 #define TL_WR942N_V1_74HC_GPIO_LED_WAN_AMBER    (TL_WR942N_V1_74HC_GPIO_BASE + 5)
  59 #define TL_WR942N_V1_74HC_GPIO_LED_WLAN         (TL_WR942N_V1_74HC_GPIO_BASE + 6)
  60 #define TL_WR942N_V1_74HC_GPIO_HUB_RESET        (TL_WR942N_V1_74HC_GPIO_BASE + 7) /* from u-boot sources */
  61
  62 #define TL_WR942N_V1_SSR_BIT_0                  0
  63 #define TL_WR942N_V1_SSR_BIT_1                  1
  64 #define TL_WR942N_V1_SSR_BIT_2                  2
  65 #define TL_WR942N_V1_SSR_BIT_3                  3
  66 #define TL_WR942N_V1_SSR_BIT_4                  4
  67 #define TL_WR942N_V1_SSR_BIT_5                  5
  68 #define TL_WR942N_V1_SSR_BIT_6                  6
  69 #define TL_WR942N_V1_SSR_BIT_7                  7
  70
  71 #define TL_WR942N_V1_WMAC_CALDATA_OFFSET        0x1000
  72 #define TL_WR942N_V1_DEFAULT_MAC_ADDR           0x1fe40008
  73 #define TL_WR942N_V1_DEFAULT_MAC_SIZE           0x200
  74
  75 #define GPIO_IN_ENABLE0_UART_SIN_LSB            8
  76 #define GPIO_IN_ENABLE0_UART_SIN_MASK           0x0000ff00
  77
  78 static struct gpio_led tl_wr942n_v1_leds_gpio[] __initdata = {
  79         {
  80                 .name           = "tl-wr942n-v1:green:status",
  81                 .gpio           = TL_WR942N_V1_GPIO_LED_STATUS,
  82                 .active_low     = 1,
  83         }, {
  84                 .name           = "tl-wr942n-v1:green:wlan",
  85                 .gpio           = TL_WR942N_V1_74HC_GPIO_LED_WLAN,
  86                 .active_low     = 1,
  87         }, {
  88                 .name           = "tl-wr942n-v1:green:lan1",
  89                 .gpio           = TL_WR942N_V1_74HC_GPIO_LED_LAN1,
  90                 .active_low     = 1,
  91         }, {
  92                 .name           = "tl-wr942n-v1:green:lan2",
  93                 .gpio           = TL_WR942N_V1_74HC_GPIO_LED_LAN2,
  94                 .active_low     = 1,
  95         }, {
  96                 .name           = "tl-wr942n-v1:green:lan3",
  97                 .gpio           = TL_WR942N_V1_74HC_GPIO_LED_LAN3,
  98                 .active_low     = 1,
  99         }, {
 100                 .name           = "tl-wr942n-v1:green:lan4",
 101                 .gpio           = TL_WR942N_V1_74HC_GPIO_LED_LAN4,
 102                 .active_low     = 1,
 103         }, {
 104                 .name           = "tl-wr942n-v1:green:wan",
 105                 .gpio           = TL_WR942N_V1_74HC_GPIO_LED_WAN_GREEN,
 106                 .active_low     = 1,
 107         }, {
 108                 .name           = "tl-wr942n-v1:amber:wan",
 109                 .gpio           = TL_WR942N_V1_74HC_GPIO_LED_WAN_AMBER,
 110                 .active_low     = 1,
 111         }, {
 112                 .name           = "tl-wr942n-v1:green:wps",
 113                 .gpio           = TL_WR942N_V1_GPIO_LED_WPS,
 114                 .active_low     = 1,
 115         }, {
 116                 .name           = "tl-wr942n-v1:green:usb1",
 117                 .gpio           = TL_WR942N_V1_GPIO_LED_USB1,
 118                 .active_low     = 1,
 119         }, {
 120                 .name           = "tl-wr942n-v1:green:usb2",
 121                 .gpio           = TL_WR942N_V1_GPIO_LED_USB2,
 122                 .active_low     = 1,
 123         },
 124 };
 125
 126 static struct gpio_keys_button tl_wr942n_v1_gpio_keys[] __initdata = {
 127         {
 128                 .desc                   = "Reset button",
 129                 .type                   = EV_KEY,
 130                 .code                   = KEY_RESTART,
 131                 .debounce_interval      = TL_WR942N_V1_KEYS_DEBOUNCE_INTERVAL,
 132                 .gpio                   = TL_WR942N_V1_GPIO_BTN_RESET,
 133                 .active_low             = 1,
 134         }, {
 135                 .desc                   = "RFKILL button",
 136                 .type                   = EV_KEY,
 137                 .code                   = KEY_RFKILL,
 138                 .debounce_interval      = TL_WR942N_V1_KEYS_DEBOUNCE_INTERVAL,
 139                 .gpio                   = TL_WR942N_V1_GPIO_BTN_RFKILL,
 140                 .active_low             = 1,
 141         },
 142 };
 143
 144 static struct spi_gpio_platform_data tl_wr942n_v1_spi_data = {
 145         .sck            = TL_WR942N_V1_GPIO_SHIFT_SRCLK,
 146         .miso           = SPI_GPIO_NO_MISO,
 147         .mosi           = TL_WR942N_V1_GPIO_SHIFT_SER,
 148         .num_chipselect = 1,
 149 };
 150
 151 static u8 tl_wr942n_v1_ssr_initdata[] = {
 152         BIT(TL_WR942N_V1_SSR_BIT_7) |
 153         BIT(TL_WR942N_V1_SSR_BIT_6) |
 154         BIT(TL_WR942N_V1_SSR_BIT_5) |
 155         BIT(TL_WR942N_V1_SSR_BIT_4) |
 156         BIT(TL_WR942N_V1_SSR_BIT_3) |
 157         BIT(TL_WR942N_V1_SSR_BIT_2) |
 158         BIT(TL_WR942N_V1_SSR_BIT_1) |
 159         BIT(TL_WR942N_V1_SSR_BIT_0)
 160 };
 161
 162 static struct gen_74x164_chip_platform_data tl_wr942n_v1_ssr_data = {
 163         .base           = TL_WR942N_V1_74HC_GPIO_BASE,
 164         .num_registers  = ARRAY_SIZE(tl_wr942n_v1_ssr_initdata),
 165         .init_data      = tl_wr942n_v1_ssr_initdata,
 166 };
 167
 168 static struct platform_device tl_wr942n_v1_spi_device = {
 169         .name           = "spi_gpio",
 170         .id             = 1,
 171         .dev = {
 172                 .platform_data = &tl_wr942n_v1_spi_data,
 173         },
 174 };
 175
 176 static struct spi_board_info tl_wr942n_v1_spi_info[] = {
 177         {
 178                 .bus_num                = 1,
 179                 .chip_select            = 0,
 180                 .max_speed_hz           = 10000000,
 181                 .modalias               = "74x164",
 182                 .platform_data          = &tl_wr942n_v1_ssr_data,
 183                 .controller_data        = (void *) TL_WR942N_V1_GPIO_SHIFT_RCLK,
 184         },
 185 };
 186
 187 static void tl_wr942n_v1_get_mac(const char *name, char *mac)
 188 {
 189         u8 *nvram = (u8 *) KSEG1ADDR(TL_WR942N_V1_DEFAULT_MAC_ADDR);
 190         int err;
 191
 192         err = ath79_nvram_parse_mac_addr(nvram, TL_WR942N_V1_DEFAULT_MAC_SIZE,
 193                                          name, mac);
 194
 195         if (err)
 196                 pr_err("no MAC address found for %s\n", name);
 197 }
 198
 199 static void __init tl_wr942n_v1_setup(void)
 200 {
 201         u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
 202         u8 tmpmac[ETH_ALEN];
 203         void __iomem *base;
 204         u32 t;
 205
 206         ath79_register_m25p80(NULL);
 207
 208         spi_register_board_info(tl_wr942n_v1_spi_info,
 209                                 ARRAY_SIZE(tl_wr942n_v1_spi_info));
 210         platform_device_register(&tl_wr942n_v1_spi_device);
 211
 212         /* Check inherited UART RX GPIO definition */
 213         base = ioremap(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE);
 214
 215         t = __raw_readl(base + QCA956X_GPIO_REG_IN_ENABLE0);
 216         if (((t & GPIO_IN_ENABLE0_UART_SIN_MASK)
 217              >> GPIO_IN_ENABLE0_UART_SIN_LSB) == TL_WR942N_V1_GPIO_LED_USB1) {
 218                 pr_warn("Active UART detected on USBLED's GPIOs!\n");
 219
 220                 tl_wr942n_v1_leds_gpio[9].gpio = TL_WR942N_V1_GPIO_UART_TX;
 221                 tl_wr942n_v1_leds_gpio[10].gpio = TL_WR942N_V1_GPIO_UART_RX;
 222         }
 223
 224         ath79_register_leds_gpio(-1, ARRAY_SIZE(tl_wr942n_v1_leds_gpio),
 225                                  tl_wr942n_v1_leds_gpio);
 226
 227         ath79_register_gpio_keys_polled(-1, TL_WR942N_V1_KEYS_POLL_INTERVAL,
 228                                         ARRAY_SIZE(tl_wr942n_v1_gpio_keys),
 229                                         tl_wr942n_v1_gpio_keys);
 230
 231         tl_wr942n_v1_get_mac("MAC:", tmpmac);
 232
 233         /* swap PHYs */
 234         ath79_setup_qca956x_eth_cfg(QCA956X_ETH_CFG_SW_PHY_SWAP |
 235                                     QCA956X_ETH_CFG_SW_PHY_ADDR_SWAP);
 236
 237         ath79_register_mdio(0, 0x0);
 238         ath79_register_mdio(1, 0x0);
 239
 240         /* WAN port */
 241         ath79_init_mac(ath79_eth0_data.mac_addr, tmpmac, 1);
 242         ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
 243         ath79_eth0_data.speed = SPEED_100;
 244         ath79_eth0_data.duplex = DUPLEX_FULL;
 245
 246         /* swaped PHYs */
 247         ath79_eth0_data.phy_mask = BIT(0);
 248         ath79_register_eth(0);
 249
 250         /* LAN ports */
 251         ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
 252         ath79_init_mac(ath79_eth1_data.mac_addr, tmpmac, 0);
 253         ath79_eth1_data.speed = SPEED_1000;
 254         ath79_eth1_data.duplex = DUPLEX_FULL;
 255
 256         /* swaped PHYs */
 257         ath79_switch_data.phy_poll_mask |= BIT(0);
 258         ath79_switch_data.phy4_mii_en = 1;
 259         ath79_register_eth(1);
 260
 261         ath79_register_wmac(art + TL_WR942N_V1_WMAC_CALDATA_OFFSET, tmpmac);
 262
 263         ath79_register_usb();
 264
 265         gpio_request_one(TL_WR942N_V1_74HC_GPIO_HUB_RESET,
 266                          GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
 267                          "USB power");
 268
 269         gpio_request_one(TL_WR942N_V1_GPIO_SHIFT_OE,
 270                          GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
 271                          "LED control");
 272
 273         gpio_request_one(TL_WR942N_V1_GPIO_SHIFT_SRCLR,
 274                          GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
 275                          "LED reset");
 276 }
 277
 278 MIPS_MACHINE(ATH79_MACH_TL_WR942N_V1, "TL-WR942N-V1", "TP-LINK TL-WR942N v1",
 279              tl_wr942n_v1_setup);