target/linux/ar71xx/files/arch/mips/ath79/mach-tube2h.c

   1 /*
   2  *  ALFA NETWORK Tube2H board support
   3  *
   4  *  Copyright (C) 2014 Gabor Juhos <juhosg@openwrt.org>
   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 <asm/mach-ath79/ath79.h>
  14 #include <asm/mach-ath79/ar71xx_regs.h>
  15
  16 #include "common.h"
  17 #include "dev-eth.h"
  18 #include "dev-gpio-buttons.h"
  19 #include "dev-leds-gpio.h"
  20 #include "dev-m25p80.h"
  21 #include "dev-wmac.h"
  22 #include "machtypes.h"
  23
  24 #define TUBE2H_GPIO_LED_SIGNAL4         0
  25 #define TUBE2H_GPIO_LED_SIGNAL3         1
  26 #define TUBE2H_GPIO_LED_SIGNAL2         13
  27 #define TUBE2H_GPIO_LED_LAN             17
  28 #define TUBE2H_GPIO_LED_SIGNAL1         27
  29 #define TUBE2H_GPIO_EXT_LNA             28
  30
  31 #define TUBE2H_GPIO_WDT_EN              22
  32 #define TUBE2H_GPIO_WDT_IN              18
  33
  34 #define TUBE2H_GPIO_BTN_RESET           12
  35
  36 #define TUBE2H_KEYS_POLL_INTERVAL       20      /* msecs */
  37 #define TUBE2H_KEYS_DEBOUNCE_INTERVAL   (3 * TUBE2H_KEYS_POLL_INTERVAL)
  38
  39 #define TUBE2H_ART_ADDRESS              0x1fff0000
  40 #define TUBE2H_LAN_MAC_OFFSET           0x06
  41 #define TUBE2H_CALDATA_OFFSET           0x1000
  42
  43 static struct gpio_led tube2h_leds_gpio[] __initdata = {
  44         {
  45                 .name           = "alfa:blue:lan",
  46                 .gpio           = TUBE2H_GPIO_LED_LAN,
  47                 .active_low     = 1,
  48         },
  49         {
  50                 .name           = "alfa:red:signal1",
  51                 .gpio           = TUBE2H_GPIO_LED_SIGNAL1,
  52                 .active_low     = 1,
  53         },
  54         {
  55                 .name           = "alfa:orange:signal2",
  56                 .gpio           = TUBE2H_GPIO_LED_SIGNAL2,
  57                 .active_low     = 0,
  58         },
  59         {
  60                 .name           = "alfa:green:signal3",
  61                 .gpio           = TUBE2H_GPIO_LED_SIGNAL3,
  62                 .active_low     = 0,
  63         },
  64         {
  65                 .name           = "alfa:green:signal4",
  66                 .gpio           = TUBE2H_GPIO_LED_SIGNAL4,
  67                 .active_low     = 0,
  68         },
  69 };
  70
  71 static struct gpio_keys_button tube2h_gpio_keys[] __initdata = {
  72         {
  73                 .desc           = "Reset button",
  74                 .type           = EV_KEY,
  75                 .code           = KEY_RESTART,
  76                 .debounce_interval = TUBE2H_KEYS_DEBOUNCE_INTERVAL,
  77                 .gpio           = TUBE2H_GPIO_BTN_RESET,
  78                 .active_low     = 1,
  79         },
  80 };
  81
  82 static void __init tube2h_setup(void)
  83 {
  84         u8 *art = (u8 *) KSEG1ADDR(TUBE2H_ART_ADDRESS);
  85         u32 t;
  86
  87         ath79_gpio_function_disable(AR933X_GPIO_FUNC_JTAG_DISABLE |
  88                                     AR933X_GPIO_FUNC_ETH_SWITCH_LED0_EN |
  89                                     AR933X_GPIO_FUNC_ETH_SWITCH_LED1_EN |
  90                                     AR933X_GPIO_FUNC_ETH_SWITCH_LED2_EN |
  91                                     AR933X_GPIO_FUNC_ETH_SWITCH_LED3_EN |
  92                                     AR933X_GPIO_FUNC_ETH_SWITCH_LED4_EN);
  93
  94         /* Ensure that GPIO26 and GPIO27 are controllable by software */
  95         t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
  96         t |= AR933X_BOOTSTRAP_MDIO_GPIO_EN;
  97         ath79_reset_wr(AR933X_RESET_REG_BOOTSTRAP, t);
  98
  99         gpio_request_one(TUBE2H_GPIO_EXT_LNA,
 100                         GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
 101                         "external LNA0");
 102
 103         gpio_request_one(TUBE2H_GPIO_WDT_IN,
 104                          GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
 105                          "WDT input");
 106
 107         gpio_request_one(TUBE2H_GPIO_WDT_EN,
 108                          GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
 109                          "WDT enable");
 110
 111         ath79_register_wmac(art + TUBE2H_CALDATA_OFFSET, NULL);
 112
 113         ath79_register_m25p80(NULL);
 114
 115         ath79_register_leds_gpio(-1, ARRAY_SIZE(tube2h_leds_gpio),
 116                                  tube2h_leds_gpio);
 117         ath79_register_gpio_keys_polled(-1, TUBE2H_KEYS_POLL_INTERVAL,
 118                                         ARRAY_SIZE(tube2h_gpio_keys),
 119                                         tube2h_gpio_keys);
 120
 121         ath79_init_mac(ath79_eth0_data.mac_addr,
 122                        art + TUBE2H_LAN_MAC_OFFSET, 0);
 123         ath79_register_mdio(0, 0x0);
 124         ath79_register_eth(0);
 125 }
 126
 127 MIPS_MACHINE(ATH79_MACH_TUBE2H, "TUBE2H", "ALFA NETWORK Tube2H",
 128              tube2h_setup);
 129