target/linux/ar71xx/files/arch/mips/ath79/mach-rb750.c

   1 /*
   2  *  MikroTik RouterBOARD 750/750GL 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 #include <linux/phy.h>
  14 #include <linux/ar8216_platform.h>
  15
  16 #include <asm/mach-ath79/ar71xx_regs.h>
  17 #include <asm/mach-ath79/ath79.h>
  18 #include <asm/mach-ath79/mach-rb750.h>
  19
  20 #include "common.h"
  21 #include "dev-eth.h"
  22 #include "machtypes.h"
  23
  24 static struct rb750_led_data rb750_leds[] = {
  25         {
  26                 .name           = "rb750:green:act",
  27                 .mask           = RB750_LED_ACT,
  28                 .active_low     = 1,
  29         }, {
  30                 .name           = "rb750:green:port1",
  31                 .mask           = RB750_LED_PORT5,
  32                 .active_low     = 1,
  33         }, {
  34                 .name           = "rb750:green:port2",
  35                 .mask           = RB750_LED_PORT4,
  36                 .active_low     = 1,
  37         }, {
  38                 .name           = "rb750:green:port3",
  39                 .mask           = RB750_LED_PORT3,
  40                 .active_low     = 1,
  41         }, {
  42                 .name           = "rb750:green:port4",
  43                 .mask           = RB750_LED_PORT2,
  44                 .active_low     = 1,
  45         }, {
  46                 .name           = "rb750:green:port5",
  47                 .mask           = RB750_LED_PORT1,
  48                 .active_low     = 1,
  49         }
  50 };
  51
  52 static struct rb750_led_data rb750gr3_leds[] = {
  53         {
  54                 .name           = "rb750:green:act",
  55                 .mask           = RB7XX_LED_ACT,
  56                 .active_low     = 1,
  57         },
  58 };
  59
  60 static struct rb750_led_platform_data rb750_leds_data;
  61 static struct platform_device rb750_leds_device = {
  62         .name   = "leds-rb750",
  63         .dev    = {
  64                 .platform_data = &rb750_leds_data,
  65         }
  66 };
  67
  68 static struct rb7xx_nand_platform_data rb750_nand_data;
  69 static struct platform_device rb750_nand_device = {
  70         .name   = "rb750-nand",
  71         .id     = -1,
  72         .dev    = {
  73                 .platform_data = &rb750_nand_data,
  74         }
  75 };
  76
  77 static void rb750_latch_change(u32 mask_clr, u32 mask_set)
  78 {
  79         static DEFINE_SPINLOCK(lock);
  80         static u32 latch_set = RB750_LED_BITS | RB750_LVC573_LE;
  81         static u32 latch_oe;
  82         static u32 latch_clr;
  83         unsigned long flags;
  84         u32 t;
  85
  86         spin_lock_irqsave(&lock, flags);
  87
  88         if ((mask_clr & BIT(31)) != 0 &&
  89             (latch_set & RB750_LVC573_LE) == 0) {
  90                 goto unlock;
  91         }
  92
  93         latch_set = (latch_set | mask_set) & ~mask_clr;
  94         latch_clr = (latch_clr | mask_clr) & ~mask_set;
  95
  96         if (latch_oe == 0)
  97                 latch_oe = __raw_readl(ath79_gpio_base + AR71XX_GPIO_REG_OE);
  98
  99         if (likely(latch_set & RB750_LVC573_LE)) {
 100                 void __iomem *base = ath79_gpio_base;
 101
 102                 t = __raw_readl(base + AR71XX_GPIO_REG_OE);
 103                 t |= mask_clr | latch_oe | mask_set;
 104
 105                 __raw_writel(t, base + AR71XX_GPIO_REG_OE);
 106                 __raw_writel(latch_clr, base + AR71XX_GPIO_REG_CLEAR);
 107                 __raw_writel(latch_set, base + AR71XX_GPIO_REG_SET);
 108         } else if (mask_clr & RB750_LVC573_LE) {
 109                 void __iomem *base = ath79_gpio_base;
 110
 111                 latch_oe = __raw_readl(base + AR71XX_GPIO_REG_OE);
 112                 __raw_writel(RB750_LVC573_LE, base + AR71XX_GPIO_REG_CLEAR);
 113                 /* flush write */
 114                 __raw_readl(base + AR71XX_GPIO_REG_CLEAR);
 115         }
 116
 117 unlock:
 118         spin_unlock_irqrestore(&lock, flags);
 119 }
 120
 121 static void rb750_nand_enable_pins(void)
 122 {
 123         rb750_latch_change(RB750_LVC573_LE, 0);
 124         ath79_gpio_function_setup(AR724X_GPIO_FUNC_JTAG_DISABLE,
 125                                   AR724X_GPIO_FUNC_SPI_EN);
 126 }
 127
 128 static void rb750_nand_disable_pins(void)
 129 {
 130         ath79_gpio_function_setup(AR724X_GPIO_FUNC_SPI_EN,
 131                                   AR724X_GPIO_FUNC_JTAG_DISABLE);
 132         rb750_latch_change(0, RB750_LVC573_LE);
 133 }
 134
 135 static void __init rb750_setup(void)
 136 {
 137         ath79_gpio_function_disable(AR724X_GPIO_FUNC_ETH_SWITCH_LED0_EN |
 138                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED1_EN |
 139                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED2_EN |
 140                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED3_EN |
 141                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED4_EN);
 142
 143         ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
 144         ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 1);
 145
 146         ath79_register_mdio(0, 0x0);
 147
 148         /* LAN ports */
 149         ath79_register_eth(1);
 150
 151         /* WAN port */
 152         ath79_register_eth(0);
 153
 154         rb750_leds_data.num_leds = ARRAY_SIZE(rb750_leds);
 155         rb750_leds_data.leds = rb750_leds;
 156         rb750_leds_data.latch_change = rb750_latch_change;
 157         platform_device_register(&rb750_leds_device);
 158
 159         rb750_nand_data.nce_line = RB750_NAND_NCE;
 160         rb750_nand_data.enable_pins = rb750_nand_enable_pins;
 161         rb750_nand_data.disable_pins = rb750_nand_disable_pins;
 162         rb750_nand_data.latch_change = rb750_latch_change;
 163         platform_device_register(&rb750_nand_device);
 164 }
 165
 166 MIPS_MACHINE(ATH79_MACH_RB_750, "750i", "MikroTik RouterBOARD 750",
 167              rb750_setup);
 168
 169 static struct ar8327_pad_cfg rb750gr3_ar8327_pad0_cfg = {
 170         .mode = AR8327_PAD_MAC_RGMII,
 171         .txclk_delay_en = true,
 172         .rxclk_delay_en = true,
 173         .txclk_delay_sel = AR8327_CLK_DELAY_SEL1,
 174         .rxclk_delay_sel = AR8327_CLK_DELAY_SEL2,
 175 };
 176
 177 static struct ar8327_platform_data rb750gr3_ar8327_data = {
 178         .pad0_cfg = &rb750gr3_ar8327_pad0_cfg,
 179         .cpuport_cfg = {
 180                 .force_link = 1,
 181                 .speed = AR8327_PORT_SPEED_100,
 182                 .duplex = 1,
 183                 .txpause = 1,
 184                 .rxpause = 1,
 185         }
 186 };
 187
 188 static struct mdio_board_info rb750g3_mdio_info[] = {
 189         {
 190                 .bus_id = "ag71xx-mdio.0",
 191                 .phy_addr = 0,
 192                 .platform_data = &rb750gr3_ar8327_data,
 193         },
 194 };
 195
 196 static void rb750gr3_nand_enable_pins(void)
 197 {
 198         ath79_gpio_function_setup(AR724X_GPIO_FUNC_JTAG_DISABLE,
 199                                   AR724X_GPIO_FUNC_SPI_EN |
 200                                   AR724X_GPIO_FUNC_SPI_CS_EN2);
 201 }
 202
 203 static void rb750gr3_nand_disable_pins(void)
 204 {
 205         ath79_gpio_function_setup(AR724X_GPIO_FUNC_SPI_EN |
 206                                   AR724X_GPIO_FUNC_SPI_CS_EN2,
 207                                   AR724X_GPIO_FUNC_JTAG_DISABLE);
 208 }
 209
 210 static void rb750gr3_latch_change(u32 mask_clr, u32 mask_set)
 211 {
 212         static DEFINE_SPINLOCK(lock);
 213         static u32 latch_set = RB7XX_LED_ACT;
 214         static u32 latch_clr;
 215         void __iomem *base = ath79_gpio_base;
 216         unsigned long flags;
 217         u32 t;
 218
 219         spin_lock_irqsave(&lock, flags);
 220
 221         latch_set = (latch_set | mask_set) & ~mask_clr;
 222         latch_clr = (latch_clr | mask_clr) & ~mask_set;
 223
 224         mask_set = latch_set & (RB7XX_USB_POWERON | RB7XX_MONITOR);
 225         mask_clr = latch_clr & (RB7XX_USB_POWERON | RB7XX_MONITOR);
 226
 227         if ((latch_set ^ RB7XX_LED_ACT) & RB7XX_LED_ACT) {
 228                 /* enable output mode */
 229                 t = __raw_readl(base + AR71XX_GPIO_REG_OE);
 230                 t |= RB7XX_LED_ACT;
 231                 __raw_writel(t, base + AR71XX_GPIO_REG_OE);
 232
 233                 mask_clr |= RB7XX_LED_ACT;
 234         } else {
 235                 /* disable output mode */
 236                 t = __raw_readl(base + AR71XX_GPIO_REG_OE);
 237                 t &= ~RB7XX_LED_ACT;
 238                 __raw_writel(t, base + AR71XX_GPIO_REG_OE);
 239         }
 240
 241         __raw_writel(mask_set, base + AR71XX_GPIO_REG_SET);
 242         __raw_writel(mask_clr, base + AR71XX_GPIO_REG_CLEAR);
 243
 244         spin_unlock_irqrestore(&lock, flags);
 245 }
 246
 247 static void __init rb750gr3_setup(void)
 248 {
 249         ath79_register_mdio(0, 0x0);
 250         mdiobus_register_board_info(rb750g3_mdio_info,
 251                                     ARRAY_SIZE(rb750g3_mdio_info));
 252
 253         ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
 254         ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 255         ath79_eth0_data.phy_mask = BIT(0);
 256
 257         ath79_register_eth(0);
 258
 259         rb750_leds_data.num_leds = ARRAY_SIZE(rb750gr3_leds);
 260         rb750_leds_data.leds = rb750gr3_leds;
 261         rb750_leds_data.latch_change = rb750gr3_latch_change;
 262         platform_device_register(&rb750_leds_device);
 263
 264         rb750_nand_data.nce_line = RB7XX_NAND_NCE;
 265         rb750_nand_data.enable_pins = rb750gr3_nand_enable_pins;
 266         rb750_nand_data.disable_pins = rb750gr3_nand_disable_pins;
 267         rb750_nand_data.latch_change = rb750gr3_latch_change;
 268         platform_device_register(&rb750_nand_device);
 269 }
 270
 271 MIPS_MACHINE(ATH79_MACH_RB_750G_R3, "750Gr3", "MikroTik RouterBOARD 750GL",
 272              rb750gr3_setup);