| 1 | /* |
| 2 | * MikroTik RouterBOARD 750 support |
| 3 | * |
| 4 | * Copyright (C) 2010-2012 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/export.h> |
| 12 | #include <linux/platform_device.h> |
| 13 | |
| 14 | #include <asm/mach-ath79/ar71xx_regs.h> |
| 15 | #include <asm/mach-ath79/ath79.h> |
| 16 | #include <asm/mach-ath79/mach-rb750.h> |
| 17 | |
| 18 | #include "common.h" |
| 19 | #include "dev-eth.h" |
| 20 | #include "machtypes.h" |
| 21 | |
| 22 | static struct rb750_led_data rb750_leds[] = { |
| 23 | { |
| 24 | .name = "rb750:green:act", |
| 25 | .mask = RB750_LED_ACT, |
| 26 | .active_low = 1, |
| 27 | }, { |
| 28 | .name = "rb750:green:port1", |
| 29 | .mask = RB750_LED_PORT5, |
| 30 | .active_low = 1, |
| 31 | }, { |
| 32 | .name = "rb750:green:port2", |
| 33 | .mask = RB750_LED_PORT4, |
| 34 | .active_low = 1, |
| 35 | }, { |
| 36 | .name = "rb750:green:port3", |
| 37 | .mask = RB750_LED_PORT3, |
| 38 | .active_low = 1, |
| 39 | }, { |
| 40 | .name = "rb750:green:port4", |
| 41 | .mask = RB750_LED_PORT2, |
| 42 | .active_low = 1, |
| 43 | }, { |
| 44 | .name = "rb750:green:port5", |
| 45 | .mask = RB750_LED_PORT1, |
| 46 | .active_low = 1, |
| 47 | } |
| 48 | }; |
| 49 | |
| 50 | static struct rb750_led_platform_data rb750_leds_data = { |
| 51 | .num_leds = ARRAY_SIZE(rb750_leds), |
| 52 | .leds = rb750_leds, |
| 53 | }; |
| 54 | |
| 55 | static struct platform_device rb750_leds_device = { |
| 56 | .name = "leds-rb750", |
| 57 | .dev = { |
| 58 | .platform_data = &rb750_leds_data, |
| 59 | } |
| 60 | }; |
| 61 | |
| 62 | static struct platform_device rb750_nand_device = { |
| 63 | .name = "rb750-nand", |
| 64 | .id = -1, |
| 65 | }; |
| 66 | |
| 67 | int rb750_latch_change(u32 mask_clr, u32 mask_set) |
| 68 | { |
| 69 | static DEFINE_SPINLOCK(lock); |
| 70 | static u32 latch_set = RB750_LED_BITS | RB750_LVC573_LE; |
| 71 | static u32 latch_oe; |
| 72 | static u32 latch_clr; |
| 73 | unsigned long flags; |
| 74 | u32 t; |
| 75 | int ret = 0; |
| 76 | |
| 77 | spin_lock_irqsave(&lock, flags); |
| 78 | |
| 79 | if ((mask_clr & BIT(31)) != 0 && |
| 80 | (latch_set & RB750_LVC573_LE) == 0) { |
| 81 | goto unlock; |
| 82 | } |
| 83 | |
| 84 | latch_set = (latch_set | mask_set) & ~mask_clr; |
| 85 | latch_clr = (latch_clr | mask_clr) & ~mask_set; |
| 86 | |
| 87 | if (latch_oe == 0) |
| 88 | latch_oe = __raw_readl(ath79_gpio_base + AR71XX_GPIO_REG_OE); |
| 89 | |
| 90 | if (likely(latch_set & RB750_LVC573_LE)) { |
| 91 | void __iomem *base = ath79_gpio_base; |
| 92 | |
| 93 | t = __raw_readl(base + AR71XX_GPIO_REG_OE); |
| 94 | t |= mask_clr | latch_oe | mask_set; |
| 95 | |
| 96 | __raw_writel(t, base + AR71XX_GPIO_REG_OE); |
| 97 | __raw_writel(latch_clr, base + AR71XX_GPIO_REG_CLEAR); |
| 98 | __raw_writel(latch_set, base + AR71XX_GPIO_REG_SET); |
| 99 | } else if (mask_clr & RB750_LVC573_LE) { |
| 100 | void __iomem *base = ath79_gpio_base; |
| 101 | |
| 102 | latch_oe = __raw_readl(base + AR71XX_GPIO_REG_OE); |
| 103 | __raw_writel(RB750_LVC573_LE, base + AR71XX_GPIO_REG_CLEAR); |
| 104 | /* flush write */ |
| 105 | __raw_readl(base + AR71XX_GPIO_REG_CLEAR); |
| 106 | } |
| 107 | |
| 108 | ret = 1; |
| 109 | |
| 110 | unlock: |
| 111 | spin_unlock_irqrestore(&lock, flags); |
| 112 | return ret; |
| 113 | } |
| 114 | EXPORT_SYMBOL_GPL(rb750_latch_change); |
| 115 | |
| 116 | void rb750_nand_pins_enable(void) |
| 117 | { |
| 118 | ath79_gpio_function_setup(AR724X_GPIO_FUNC_JTAG_DISABLE, |
| 119 | AR724X_GPIO_FUNC_SPI_EN); |
| 120 | } |
| 121 | EXPORT_SYMBOL_GPL(rb750_nand_pins_enable); |
| 122 | |
| 123 | void rb750_nand_pins_disable(void) |
| 124 | { |
| 125 | ath79_gpio_function_setup(AR724X_GPIO_FUNC_SPI_EN, |
| 126 | AR724X_GPIO_FUNC_JTAG_DISABLE); |
| 127 | } |
| 128 | EXPORT_SYMBOL_GPL(rb750_nand_pins_disable); |
| 129 | |
| 130 | static void __init rb750_setup(void) |
| 131 | { |
| 132 | ath79_gpio_function_disable(AR724X_GPIO_FUNC_ETH_SWITCH_LED0_EN | |
| 133 | AR724X_GPIO_FUNC_ETH_SWITCH_LED1_EN | |
| 134 | AR724X_GPIO_FUNC_ETH_SWITCH_LED2_EN | |
| 135 | AR724X_GPIO_FUNC_ETH_SWITCH_LED3_EN | |
| 136 | AR724X_GPIO_FUNC_ETH_SWITCH_LED4_EN); |
| 137 | |
| 138 | ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0); |
| 139 | ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 1); |
| 140 | |
| 141 | ath79_register_mdio(0, 0x0); |
| 142 | |
| 143 | /* LAN ports */ |
| 144 | ath79_register_eth(1); |
| 145 | |
| 146 | /* WAN port */ |
| 147 | ath79_register_eth(0); |
| 148 | |
| 149 | platform_device_register(&rb750_leds_device); |
| 150 | platform_device_register(&rb750_nand_device); |
| 151 | } |
| 152 | |
| 153 | MIPS_MACHINE(ATH79_MACH_RB_750, "750i", "MikroTik RouterBOARD 750", |
| 154 | rb750_setup); |
| 155 | |
