target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb750.c

   1 /*
   2  *  MikroTik RouterBOARD 750 support
   3  *
   4  *  Copyright (C) 2010 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/platform_device.h>
  12 #include <asm/mach-ar71xx/ar71xx.h>
  13 #include <asm/mach-ar71xx/mach-rb750.h>
  14
  15 #include "machtype.h"
  16 #include "devices.h"
  17 #include "dev-ap91-eth.h"
  18
  19 static struct rb750_led_data rb750_leds[] = {
  20         {
  21                 .name           = "rb750:green:act",
  22                 .mask           = RB750_LED_ACT,
  23                 .active_low     = 1,
  24         }, {
  25                 .name           = "rb750:green:port1",
  26                 .mask           = RB750_LED_PORT5,
  27                 .active_low     = 1,
  28         }, {
  29                 .name           = "rb750:green:port2",
  30                 .mask           = RB750_LED_PORT4,
  31                 .active_low     = 1,
  32         }, {
  33                 .name           = "rb750:green:port3",
  34                 .mask           = RB750_LED_PORT3,
  35                 .active_low     = 1,
  36         }, {
  37                 .name           = "rb750:green:port4",
  38                 .mask           = RB750_LED_PORT2,
  39                 .active_low     = 1,
  40         }, {
  41                 .name           = "rb750:green:port5",
  42                 .mask           = RB750_LED_PORT1,
  43                 .active_low     = 1,
  44         }
  45 };
  46
  47 static struct rb750_led_platform_data rb750_leds_data = {
  48         .num_leds       = ARRAY_SIZE(rb750_leds),
  49         .leds           = rb750_leds,
  50 };
  51
  52 static struct platform_device rb750_leds_device = {
  53         .name   = "leds-rb750",
  54         .dev    = {
  55                 .platform_data = &rb750_leds_data,
  56         }
  57 };
  58
  59 static const char *rb750_port_names[AP91_ETH_NUM_PORT_NAMES] __initdata = {
  60         "port5",
  61         "port4",
  62         "port3",
  63         "port2",
  64 };
  65
  66 static struct platform_device rb750_nand_device = {
  67         .name   = "rb750-nand",
  68         .id     = -1,
  69 };
  70
  71 int rb750_latch_change(u32 mask_clr, u32 mask_set)
  72 {
  73         static DEFINE_SPINLOCK(lock);
  74         static u32 latch_set = RB750_LED_BITS | RB750_LVC573_LE;
  75         static u32 latch_oe;
  76         static u32 latch_clr;
  77         unsigned long flags;
  78         u32 t;
  79         int ret = 0;
  80
  81         spin_lock_irqsave(&lock, flags);
  82
  83         if ((mask_clr & BIT(31)) != 0 &&
  84             (latch_set & RB750_LVC573_LE) == 0) {
  85                 goto unlock;
  86         }
  87
  88         latch_set = (latch_set | mask_set) & ~mask_clr;
  89         latch_clr = (latch_clr | mask_clr) & ~mask_set;
  90
  91         if (latch_oe == 0)
  92                 latch_oe = __raw_readl(ar71xx_gpio_base + GPIO_REG_OE);
  93
  94         if (likely(latch_set & RB750_LVC573_LE)) {
  95                 void __iomem *base = ar71xx_gpio_base;
  96
  97                 t = __raw_readl(base + GPIO_REG_OE);
  98                 t |= mask_clr | latch_oe | mask_set;
  99
 100                 __raw_writel(t, base + GPIO_REG_OE);
 101                 __raw_writel(latch_clr, base + GPIO_REG_CLEAR);
 102                 __raw_writel(latch_set, base + GPIO_REG_SET);
 103         } else if (mask_clr & RB750_LVC573_LE) {
 104                 void __iomem *base = ar71xx_gpio_base;
 105
 106                 latch_oe = __raw_readl(base + GPIO_REG_OE);
 107                 __raw_writel(RB750_LVC573_LE, base + GPIO_REG_CLEAR);
 108                 /* flush write */
 109                 __raw_readl(base + GPIO_REG_CLEAR);
 110         }
 111
 112         ret = 1;
 113
 114  unlock:
 115         spin_unlock_irqrestore(&lock, flags);
 116         return ret;
 117 }
 118 EXPORT_SYMBOL_GPL(rb750_latch_change);
 119
 120 static void __init rb750_setup(void)
 121 {
 122         ar71xx_gpio_function_disable(AR724X_GPIO_FUNC_ETH_SWITCH_LED0_EN |
 123                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED1_EN |
 124                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED2_EN |
 125                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED3_EN |
 126                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED4_EN);
 127
 128         ar71xx_init_mac(ar71xx_eth0_data.mac_addr, ar71xx_mac_base, 0);
 129         ar71xx_init_mac(ar71xx_eth1_data.mac_addr, ar71xx_mac_base, 1);
 130         ap91_eth_init(rb750_port_names);
 131
 132         platform_device_register(&rb750_leds_device);
 133         platform_device_register(&rb750_nand_device);
 134 }
 135
 136 MIPS_MACHINE(AR71XX_MACH_RB_750, "750i", "MikroTik RouterBOARD 750",
 137              rb750_setup);