target/linux/ramips/files-3.7/arch/mips/ralink/rt3883/mach-omni-emb-hpm.c

   1 /*
   2  *  Omnima EMB HPM board support
   3  *
   4  *  Copyright (C) 2012 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/init.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/ethtool.h>
  14 #include <linux/gpio.h>
  15 #include <linux/rt2x00_platform.h>
  16 #include <linux/spi/spi.h>
  17
  18 #include <asm/mach-ralink/machine.h>
  19 #include <asm/mach-ralink/dev-gpio-buttons.h>
  20 #include <asm/mach-ralink/dev-gpio-leds.h>
  21 #include <asm/mach-ralink/rt3883.h>
  22 #include <asm/mach-ralink/rt3883_regs.h>
  23 #include <asm/mach-ralink/ramips_eth_platform.h>
  24
  25 #include "devices.h"
  26
  27 #define OMNI_EMB_HPM_GPIO_LED_POWER             7
  28 #define OMNI_EMB_HPM_GPIO_LED_ETH_GREEN         20
  29 #define OMNI_EMB_HPM_GPIO_LED_ETH_RED           18
  30 #define OMNI_EMB_HPM_GPIO_LED_STATUS            21
  31 #define OMNI_EMB_HPM_GPIO_LED_WIFI_GREEN        17
  32 #define OMNI_EMB_HPM_GPIO_LED_WIFI_RED          19
  33
  34 #define OMNI_EMB_HPM_GPIO_BUTTON_RESET          14
  35
  36 #define OMNI_EMB_HPM_GPIO_USB0_ENABLE           2
  37 #define OMNI_EMB_HPM_GPIO_USB1_ENABLE           1
  38 #define OMNI_EMB_HPM_GPIO_USB0_OC               12
  39 #define OMNI_EMB_HPM_GPIO_USB1_OC               13
  40
  41 #define OMNI_EMB_HPM_KEYS_POLL_INTERVAL 20
  42 #define OMNI_EMB_HPM_KEYS_DEBOUNCE_INTERVAL (3 * OMNI_EMB_HPM_KEYS_POLL_INTERVAL)
  43
  44 static struct gpio_led omni_emb_hpm_leds_gpio[] __initdata = {
  45         {
  46                 .name           = "emb:orange:power",
  47                 .gpio           = OMNI_EMB_HPM_GPIO_LED_POWER,
  48                 .active_low     = 1,
  49         },
  50         {
  51                 .name           = "emb:green:status",
  52                 .gpio           = OMNI_EMB_HPM_GPIO_LED_STATUS,
  53         },
  54         {
  55                 .name           = "emb:green:eth",
  56                 .gpio           = OMNI_EMB_HPM_GPIO_LED_ETH_GREEN,
  57                 .active_low     = 1,
  58         },
  59         {
  60                 .name           = "emb:red:eth",
  61                 .gpio           = OMNI_EMB_HPM_GPIO_LED_ETH_RED,
  62                 .active_low     = 1,
  63         },
  64         {
  65                 .name           = "emb:green:wifi",
  66                 .gpio           = OMNI_EMB_HPM_GPIO_LED_WIFI_GREEN,
  67                 .active_low     = 1,
  68         },
  69         {
  70                 .name           = "emb:red:wifi",
  71                 .gpio           = OMNI_EMB_HPM_GPIO_LED_WIFI_RED,
  72                 .active_low     = 1,
  73         },
  74 };
  75
  76 static struct gpio_keys_button omni_emb_hpm_gpio_buttons[] __initdata = {
  77         {
  78                 .desc           = "reset",
  79                 .type           = EV_KEY,
  80                 .code           = KEY_RESTART,
  81                 .debounce_interval = OMNI_EMB_HPM_KEYS_DEBOUNCE_INTERVAL,
  82                 .gpio           = OMNI_EMB_HPM_GPIO_BUTTON_RESET,
  83                 .active_low     = 1,
  84         },
  85 };
  86
  87 static struct spi_board_info omni_emb_hpm_spi_info[] = {
  88         {
  89                 .bus_num        = 0,
  90                 .chip_select    = 0,
  91                 .max_speed_hz   = 25000000,
  92                 .modalias       = "m25p80",
  93         }
  94 };
  95
  96
  97 static void __init omni_emb_hpm_gpio_request(unsigned int gpio,
  98                                              unsigned long flags,
  99                                              const char *label,
 100                                              bool free)
 101 {
 102         int err;
 103
 104         err = gpio_request_one(gpio, flags, label);
 105         if (err) {
 106                 pr_err("EMB_HPM: can't setup GPIO%u (%s), err=%d\n",
 107                         gpio, label, err);
 108                 return;
 109         }
 110
 111         if (free)
 112                 gpio_free(gpio);
 113 }
 114
 115 static void __init omni_emb_hpm_gpio_init(void)
 116 {
 117         rt3883_gpio_init(RT3883_GPIO_MODE_I2C |
 118                          RT3883_GPIO_MODE_UART0(RT3883_GPIO_MODE_GPIO) |
 119                          RT3883_GPIO_MODE_JTAG);
 120
 121         omni_emb_hpm_gpio_request(OMNI_EMB_HPM_GPIO_USB0_ENABLE,
 122                                   GPIOF_OUT_INIT_HIGH,
 123                                   "USB0 power", true);
 124         omni_emb_hpm_gpio_request(OMNI_EMB_HPM_GPIO_USB1_ENABLE,
 125                                   GPIOF_OUT_INIT_HIGH,
 126                                   "USB1 power", true);
 127         omni_emb_hpm_gpio_request(OMNI_EMB_HPM_GPIO_USB0_OC,
 128                                   GPIOF_IN, "USB0 OC", false);
 129         omni_emb_hpm_gpio_request(OMNI_EMB_HPM_GPIO_USB1_OC,
 130                                   GPIOF_IN, "USB1 OC", false);
 131 }
 132
 133 static void __init omni_emb_hpm_init(void)
 134 {
 135         omni_emb_hpm_gpio_init();
 136
 137         ramips_register_gpio_leds(-1, ARRAY_SIZE(omni_emb_hpm_leds_gpio),
 138                                   omni_emb_hpm_leds_gpio);
 139
 140         ramips_register_gpio_buttons(-1, OMNI_EMB_HPM_KEYS_POLL_INTERVAL,
 141                                      ARRAY_SIZE(omni_emb_hpm_gpio_buttons),
 142                                      omni_emb_hpm_gpio_buttons);
 143
 144         rt3883_register_spi(omni_emb_hpm_spi_info,
 145                             ARRAY_SIZE(omni_emb_hpm_spi_info));
 146
 147         rt3883_register_wlan();
 148
 149         rt3883_eth_data.phy_mask = BIT(4);
 150         rt3883_register_ethernet();
 151
 152         rt3883_register_wdt(false);
 153         rt3883_register_usbhost();
 154 }
 155
 156 MIPS_MACHINE(RAMIPS_MACH_OMNI_EMB_HPM, "OMNI-EMB-HPM", "Omnima EMB HPM",
 157              omni_emb_hpm_init);