ar71xx: merge files-3.2 to files
[openwrt/svn-archive/archive.git] / target / linux / ar71xx / files / arch / mips / ath79 / mach-rb750.c
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);