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/pci.h>
  13 #include <linux/ath9k_platform.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/phy.h>
  16 #include <linux/ar8216_platform.h>
  17
  18 #include <asm/mach-ath79/ar71xx_regs.h>
  19 #include <asm/mach-ath79/ath79.h>
  20 #include <asm/mach-ath79/irq.h>
  21 #include <asm/mach-ath79/mach-rb750.h>
  22
  23 #include "common.h"
  24 #include "dev-ap9x-pci.h"
  25 #include "dev-usb.h"
  26 #include "dev-eth.h"
  27 #include "machtypes.h"
  28
  29 static struct rb750_led_data rb750_leds[] = {
  30         {
  31                 .name           = "rb750:green:act",
  32                 .mask           = RB750_LED_ACT,
  33                 .active_low     = 1,
  34         }, {
  35                 .name           = "rb750:green:port1",
  36                 .mask           = RB750_LED_PORT5,
  37                 .active_low     = 1,
  38         }, {
  39                 .name           = "rb750:green:port2",
  40                 .mask           = RB750_LED_PORT4,
  41                 .active_low     = 1,
  42         }, {
  43                 .name           = "rb750:green:port3",
  44                 .mask           = RB750_LED_PORT3,
  45                 .active_low     = 1,
  46         }, {
  47                 .name           = "rb750:green:port4",
  48                 .mask           = RB750_LED_PORT2,
  49                 .active_low     = 1,
  50         }, {
  51                 .name           = "rb750:green:port5",
  52                 .mask           = RB750_LED_PORT1,
  53                 .active_low     = 1,
  54         }
  55 };
  56
  57 static struct rb750_led_data rb750gr3_leds[] = {
  58         {
  59                 .name           = "rb750:green:act",
  60                 .mask           = RB7XX_LED_ACT,
  61                 .active_low     = 1,
  62         },
  63 };
  64
  65 static struct rb750_led_platform_data rb750_leds_data;
  66 static struct platform_device rb750_leds_device = {
  67         .name   = "leds-rb750",
  68         .dev    = {
  69                 .platform_data = &rb750_leds_data,
  70         }
  71 };
  72
  73 static struct rb7xx_nand_platform_data rb750_nand_data;
  74 static struct platform_device rb750_nand_device = {
  75         .name   = "rb750-nand",
  76         .id     = -1,
  77         .dev    = {
  78                 .platform_data = &rb750_nand_data,
  79         }
  80 };
  81
  82 static void rb750_latch_change(u32 mask_clr, u32 mask_set)
  83 {
  84         static DEFINE_SPINLOCK(lock);
  85         static u32 latch_set = RB750_LED_BITS | RB750_LVC573_LE;
  86         static u32 latch_oe;
  87         static u32 latch_clr;
  88         unsigned long flags;
  89         u32 t;
  90
  91         spin_lock_irqsave(&lock, flags);
  92
  93         if ((mask_clr & BIT(31)) != 0 &&
  94             (latch_set & RB750_LVC573_LE) == 0) {
  95                 goto unlock;
  96         }
  97
  98         latch_set = (latch_set | mask_set) & ~mask_clr;
  99         latch_clr = (latch_clr | mask_clr) & ~mask_set;
 100
 101         if (latch_oe == 0)
 102                 latch_oe = __raw_readl(ath79_gpio_base + AR71XX_GPIO_REG_OE);
 103
 104         if (likely(latch_set & RB750_LVC573_LE)) {
 105                 void __iomem *base = ath79_gpio_base;
 106
 107                 t = __raw_readl(base + AR71XX_GPIO_REG_OE);
 108                 t |= mask_clr | latch_oe | mask_set;
 109
 110                 __raw_writel(t, base + AR71XX_GPIO_REG_OE);
 111                 __raw_writel(latch_clr, base + AR71XX_GPIO_REG_CLEAR);
 112                 __raw_writel(latch_set, base + AR71XX_GPIO_REG_SET);
 113         } else if (mask_clr & RB750_LVC573_LE) {
 114                 void __iomem *base = ath79_gpio_base;
 115
 116                 latch_oe = __raw_readl(base + AR71XX_GPIO_REG_OE);
 117                 __raw_writel(RB750_LVC573_LE, base + AR71XX_GPIO_REG_CLEAR);
 118                 /* flush write */
 119                 __raw_readl(base + AR71XX_GPIO_REG_CLEAR);
 120         }
 121
 122 unlock:
 123         spin_unlock_irqrestore(&lock, flags);
 124 }
 125
 126 static void rb750_nand_enable_pins(void)
 127 {
 128         rb750_latch_change(RB750_LVC573_LE, 0);
 129         ath79_gpio_function_setup(AR724X_GPIO_FUNC_JTAG_DISABLE,
 130                                   AR724X_GPIO_FUNC_SPI_EN);
 131 }
 132
 133 static void rb750_nand_disable_pins(void)
 134 {
 135         ath79_gpio_function_setup(AR724X_GPIO_FUNC_SPI_EN,
 136                                   AR724X_GPIO_FUNC_JTAG_DISABLE);
 137         rb750_latch_change(0, RB750_LVC573_LE);
 138 }
 139
 140 static void __init rb750_setup(void)
 141 {
 142         ath79_gpio_function_disable(AR724X_GPIO_FUNC_ETH_SWITCH_LED0_EN |
 143                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED1_EN |
 144                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED2_EN |
 145                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED3_EN |
 146                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED4_EN);
 147
 148         ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
 149         ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 1);
 150
 151         ath79_register_mdio(0, 0x0);
 152
 153         /* LAN ports */
 154         ath79_register_eth(1);
 155
 156         /* WAN port */
 157         ath79_register_eth(0);
 158
 159         rb750_leds_data.num_leds = ARRAY_SIZE(rb750_leds);
 160         rb750_leds_data.leds = rb750_leds;
 161         rb750_leds_data.latch_change = rb750_latch_change;
 162         platform_device_register(&rb750_leds_device);
 163
 164         rb750_nand_data.nce_line = RB750_NAND_NCE;
 165         rb750_nand_data.enable_pins = rb750_nand_enable_pins;
 166         rb750_nand_data.disable_pins = rb750_nand_disable_pins;
 167         rb750_nand_data.latch_change = rb750_latch_change;
 168         platform_device_register(&rb750_nand_device);
 169 }
 170
 171 MIPS_MACHINE(ATH79_MACH_RB_750, "750i", "MikroTik RouterBOARD 750",
 172              rb750_setup);
 173
 174 static struct ar8327_pad_cfg rb750gr3_ar8327_pad0_cfg = {
 175         .mode = AR8327_PAD_MAC_RGMII,
 176         .txclk_delay_en = true,
 177         .rxclk_delay_en = true,
 178         .txclk_delay_sel = AR8327_CLK_DELAY_SEL1,
 179         .rxclk_delay_sel = AR8327_CLK_DELAY_SEL2,
 180 };
 181
 182 static struct ar8327_platform_data rb750gr3_ar8327_data = {
 183         .pad0_cfg = &rb750gr3_ar8327_pad0_cfg,
 184         .cpuport_cfg = {
 185                 .force_link = 1,
 186                 .speed = AR8327_PORT_SPEED_100,
 187                 .duplex = 1,
 188                 .txpause = 1,
 189                 .rxpause = 1,
 190         }
 191 };
 192
 193 static struct mdio_board_info rb750g3_mdio_info[] = {
 194         {
 195                 .bus_id = "ag71xx-mdio.0",
 196                 .phy_addr = 0,
 197                 .platform_data = &rb750gr3_ar8327_data,
 198         },
 199 };
 200
 201 static void rb750gr3_nand_enable_pins(void)
 202 {
 203         ath79_gpio_function_setup(AR724X_GPIO_FUNC_JTAG_DISABLE,
 204                                   AR724X_GPIO_FUNC_SPI_EN |
 205                                   AR724X_GPIO_FUNC_SPI_CS_EN2);
 206 }
 207
 208 static void rb750gr3_nand_disable_pins(void)
 209 {
 210         ath79_gpio_function_setup(AR724X_GPIO_FUNC_SPI_EN |
 211                                   AR724X_GPIO_FUNC_SPI_CS_EN2,
 212                                   AR724X_GPIO_FUNC_JTAG_DISABLE);
 213 }
 214
 215 static void rb750gr3_latch_change(u32 mask_clr, u32 mask_set)
 216 {
 217         static DEFINE_SPINLOCK(lock);
 218         static u32 latch_set = RB7XX_LED_ACT;
 219         static u32 latch_clr;
 220         void __iomem *base = ath79_gpio_base;
 221         unsigned long flags;
 222         u32 t;
 223
 224         spin_lock_irqsave(&lock, flags);
 225
 226         latch_set = (latch_set | mask_set) & ~mask_clr;
 227         latch_clr = (latch_clr | mask_clr) & ~mask_set;
 228
 229         mask_set = latch_set & (RB7XX_USB_POWERON | RB7XX_MONITOR);
 230         mask_clr = latch_clr & (RB7XX_USB_POWERON | RB7XX_MONITOR);
 231
 232         if ((latch_set ^ RB7XX_LED_ACT) & RB7XX_LED_ACT) {
 233                 /* enable output mode */
 234                 t = __raw_readl(base + AR71XX_GPIO_REG_OE);
 235                 t |= RB7XX_LED_ACT;
 236                 __raw_writel(t, base + AR71XX_GPIO_REG_OE);
 237
 238                 mask_clr |= RB7XX_LED_ACT;
 239         } else {
 240                 /* disable output mode */
 241                 t = __raw_readl(base + AR71XX_GPIO_REG_OE);
 242                 t &= ~RB7XX_LED_ACT;
 243                 __raw_writel(t, base + AR71XX_GPIO_REG_OE);
 244         }
 245
 246         __raw_writel(mask_set, base + AR71XX_GPIO_REG_SET);
 247         __raw_writel(mask_clr, base + AR71XX_GPIO_REG_CLEAR);
 248
 249         spin_unlock_irqrestore(&lock, flags);
 250 }
 251
 252 static void __init rb750gr3_setup(void)
 253 {
 254         ath79_register_mdio(0, 0x0);
 255         mdiobus_register_board_info(rb750g3_mdio_info,
 256                                     ARRAY_SIZE(rb750g3_mdio_info));
 257
 258         ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
 259         ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 260         ath79_eth0_data.phy_mask = BIT(0);
 261
 262         ath79_register_eth(0);
 263
 264         rb750_leds_data.num_leds = ARRAY_SIZE(rb750gr3_leds);
 265         rb750_leds_data.leds = rb750gr3_leds;
 266         rb750_leds_data.latch_change = rb750gr3_latch_change;
 267         platform_device_register(&rb750_leds_device);
 268
 269         rb750_nand_data.nce_line = RB7XX_NAND_NCE;
 270         rb750_nand_data.enable_pins = rb750gr3_nand_enable_pins;
 271         rb750_nand_data.disable_pins = rb750gr3_nand_disable_pins;
 272         rb750_nand_data.latch_change = rb750gr3_latch_change;
 273         platform_device_register(&rb750_nand_device);
 274 }
 275
 276 MIPS_MACHINE(ATH79_MACH_RB_750G_R3, "750Gr3", "MikroTik RouterBOARD 750GL",
 277              rb750gr3_setup);
 278
 279 static int decode_rle(char *output, int len, char *in)
 280 {
 281         char *ptr = output;
 282         char *end = output + len;
 283
 284         if (!output || !in)
 285                 return -EINVAL;
 286
 287         while (*in) {
 288                 if (*in < 0) {
 289                         int i = -*in++;
 290                         while (i-- > 0) {
 291                                 if (ptr >= end)
 292                                         return -EINVAL;
 293                                 *ptr++ = *in++;
 294                         }
 295                 } else if (*in > 0) {
 296                         int i = *in++;
 297                         while (i-- > 0) {
 298                                 if (ptr >= end)
 299                                         return -EINVAL;
 300                                 *ptr++ = *in;
 301                         }
 302                         in++;
 303                 }
 304         }
 305
 306         return ptr - output;
 307 }
 308
 309 #define RB751_HARDCONFIG 0x1f00b000
 310 #define RB751_MAC_ADDRESS_OFFSET 0xE80
 311 #define RB751_CALDATA_OFFSET 0x27C
 312
 313 static void __init rb751_wlan_setup(void)
 314 {
 315         u8 *hardconfig = (u8 *) KSEG1ADDR(RB751_HARDCONFIG);
 316         struct ath9k_platform_data *wmac_data;
 317         int dec_size;
 318
 319         wmac_data = ap9x_pci_get_wmac_data(0);
 320         if (!wmac_data) {
 321                 pr_err("rb75x: unable to get address of wlan data\n");
 322                 return;
 323         }
 324
 325         ap9x_pci_setup_wmac_led_pin(0, 9);
 326
 327         dec_size = decode_rle((char *) wmac_data->eeprom_data,
 328                               sizeof(wmac_data->eeprom_data),
 329                               hardconfig + RB751_CALDATA_OFFSET);
 330         if (dec_size != sizeof(wmac_data->eeprom_data)) {
 331                 pr_err("rb75x: unable to decode wlan eeprom data\n");
 332                 return;
 333         }
 334
 335         ap91_pci_init(NULL, hardconfig + RB751_MAC_ADDRESS_OFFSET);
 336 }
 337
 338 static void __init rb751_setup(void)
 339 {
 340         rb750_setup();
 341         ath79_register_usb();
 342         rb751_wlan_setup();
 343 }
 344
 345 MIPS_MACHINE(ATH79_MACH_RB_751, "751", "MikroTik RouterBOARD 751",
 346              rb751_setup);
 347
 348 static void __init rb751g_setup(void)
 349 {
 350         rb750gr3_setup();
 351         ath79_register_usb();
 352         rb751_wlan_setup();
 353 }
 354
 355 MIPS_MACHINE(ATH79_MACH_RB_751G, "751g", "MikroTik RouterBOARD 751G",
 356              rb751g_setup);