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/pci.h>
  21 #include <asm/mach-ath79/irq.h>
  22 #include <asm/mach-ath79/mach-rb750.h>
  23
  24 #include "common.h"
  25 #include "dev-usb.h"
  26 #include "dev-eth.h"
  27 #include "machtypes.h"
  28 #include "pci-ath9k-fixup.h"
  29 #include "pci.h"
  30
  31 static struct rb750_led_data rb750_leds[] = {
  32         {
  33                 .name           = "rb750:green:act",
  34                 .mask           = RB750_LED_ACT,
  35                 .active_low     = 1,
  36         }, {
  37                 .name           = "rb750:green:port1",
  38                 .mask           = RB750_LED_PORT5,
  39                 .active_low     = 1,
  40         }, {
  41                 .name           = "rb750:green:port2",
  42                 .mask           = RB750_LED_PORT4,
  43                 .active_low     = 1,
  44         }, {
  45                 .name           = "rb750:green:port3",
  46                 .mask           = RB750_LED_PORT3,
  47                 .active_low     = 1,
  48         }, {
  49                 .name           = "rb750:green:port4",
  50                 .mask           = RB750_LED_PORT2,
  51                 .active_low     = 1,
  52         }, {
  53                 .name           = "rb750:green:port5",
  54                 .mask           = RB750_LED_PORT1,
  55                 .active_low     = 1,
  56         }
  57 };
  58
  59 static struct rb750_led_data rb750gr3_leds[] = {
  60         {
  61                 .name           = "rb750:green:act",
  62                 .mask           = RB7XX_LED_ACT,
  63                 .active_low     = 1,
  64         },
  65 };
  66
  67 static struct rb750_led_platform_data rb750_leds_data;
  68 static struct platform_device rb750_leds_device = {
  69         .name   = "leds-rb750",
  70         .dev    = {
  71                 .platform_data = &rb750_leds_data,
  72         }
  73 };
  74
  75 static struct rb7xx_nand_platform_data rb750_nand_data;
  76 static struct platform_device rb750_nand_device = {
  77         .name   = "rb750-nand",
  78         .id     = -1,
  79         .dev    = {
  80                 .platform_data = &rb750_nand_data,
  81         }
  82 };
  83
  84 static void rb750_latch_change(u32 mask_clr, u32 mask_set)
  85 {
  86         static DEFINE_SPINLOCK(lock);
  87         static u32 latch_set = RB750_LED_BITS | RB750_LVC573_LE;
  88         static u32 latch_oe;
  89         static u32 latch_clr;
  90         unsigned long flags;
  91         u32 t;
  92
  93         spin_lock_irqsave(&lock, flags);
  94
  95         if ((mask_clr & BIT(31)) != 0 &&
  96             (latch_set & RB750_LVC573_LE) == 0) {
  97                 goto unlock;
  98         }
  99
 100         latch_set = (latch_set | mask_set) & ~mask_clr;
 101         latch_clr = (latch_clr | mask_clr) & ~mask_set;
 102
 103         if (latch_oe == 0)
 104                 latch_oe = __raw_readl(ath79_gpio_base + AR71XX_GPIO_REG_OE);
 105
 106         if (likely(latch_set & RB750_LVC573_LE)) {
 107                 void __iomem *base = ath79_gpio_base;
 108
 109                 t = __raw_readl(base + AR71XX_GPIO_REG_OE);
 110                 t |= mask_clr | latch_oe | mask_set;
 111
 112                 __raw_writel(t, base + AR71XX_GPIO_REG_OE);
 113                 __raw_writel(latch_clr, base + AR71XX_GPIO_REG_CLEAR);
 114                 __raw_writel(latch_set, base + AR71XX_GPIO_REG_SET);
 115         } else if (mask_clr & RB750_LVC573_LE) {
 116                 void __iomem *base = ath79_gpio_base;
 117
 118                 latch_oe = __raw_readl(base + AR71XX_GPIO_REG_OE);
 119                 __raw_writel(RB750_LVC573_LE, base + AR71XX_GPIO_REG_CLEAR);
 120                 /* flush write */
 121                 __raw_readl(base + AR71XX_GPIO_REG_CLEAR);
 122         }
 123
 124 unlock:
 125         spin_unlock_irqrestore(&lock, flags);
 126 }
 127
 128 static void rb750_nand_enable_pins(void)
 129 {
 130         rb750_latch_change(RB750_LVC573_LE, 0);
 131         ath79_gpio_function_setup(AR724X_GPIO_FUNC_JTAG_DISABLE,
 132                                   AR724X_GPIO_FUNC_SPI_EN);
 133 }
 134
 135 static void rb750_nand_disable_pins(void)
 136 {
 137         ath79_gpio_function_setup(AR724X_GPIO_FUNC_SPI_EN,
 138                                   AR724X_GPIO_FUNC_JTAG_DISABLE);
 139         rb750_latch_change(0, RB750_LVC573_LE);
 140 }
 141
 142 static void __init rb750_setup(void)
 143 {
 144         ath79_gpio_function_disable(AR724X_GPIO_FUNC_ETH_SWITCH_LED0_EN |
 145                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED1_EN |
 146                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED2_EN |
 147                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED3_EN |
 148                                      AR724X_GPIO_FUNC_ETH_SWITCH_LED4_EN);
 149
 150         ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
 151         ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 1);
 152
 153         ath79_register_mdio(0, 0x0);
 154
 155         /* LAN ports */
 156         ath79_register_eth(1);
 157
 158         /* WAN port */
 159         ath79_register_eth(0);
 160
 161         rb750_leds_data.num_leds = ARRAY_SIZE(rb750_leds);
 162         rb750_leds_data.leds = rb750_leds;
 163         rb750_leds_data.latch_change = rb750_latch_change;
 164         platform_device_register(&rb750_leds_device);
 165
 166         rb750_nand_data.nce_line = RB750_NAND_NCE;
 167         rb750_nand_data.enable_pins = rb750_nand_enable_pins;
 168         rb750_nand_data.disable_pins = rb750_nand_disable_pins;
 169         rb750_nand_data.latch_change = rb750_latch_change;
 170         platform_device_register(&rb750_nand_device);
 171 }
 172
 173 MIPS_MACHINE(ATH79_MACH_RB_750, "750i", "MikroTik RouterBOARD 750",
 174              rb750_setup);
 175
 176 static struct ar8327_pad_cfg rb750gr3_ar8327_pad0_cfg = {
 177         .mode = AR8327_PAD_MAC_RGMII,
 178         .txclk_delay_en = true,
 179         .rxclk_delay_en = true,
 180         .txclk_delay_sel = AR8327_CLK_DELAY_SEL1,
 181         .rxclk_delay_sel = AR8327_CLK_DELAY_SEL2,
 182 };
 183
 184 static struct ar8327_platform_data rb750gr3_ar8327_data = {
 185         .pad0_cfg = &rb750gr3_ar8327_pad0_cfg,
 186         .cpuport_cfg = {
 187                 .force_link = 1,
 188                 .speed = AR8327_PORT_SPEED_100,
 189                 .duplex = 1,
 190                 .txpause = 1,
 191                 .rxpause = 1,
 192         }
 193 };
 194
 195 static struct mdio_board_info rb750g3_mdio_info[] = {
 196         {
 197                 .bus_id = "ag71xx-mdio.0",
 198                 .phy_addr = 0,
 199                 .platform_data = &rb750gr3_ar8327_data,
 200         },
 201 };
 202
 203 static void rb750gr3_nand_enable_pins(void)
 204 {
 205         ath79_gpio_function_setup(AR724X_GPIO_FUNC_JTAG_DISABLE,
 206                                   AR724X_GPIO_FUNC_SPI_EN |
 207                                   AR724X_GPIO_FUNC_SPI_CS_EN2);
 208 }
 209
 210 static void rb750gr3_nand_disable_pins(void)
 211 {
 212         ath79_gpio_function_setup(AR724X_GPIO_FUNC_SPI_EN |
 213                                   AR724X_GPIO_FUNC_SPI_CS_EN2,
 214                                   AR724X_GPIO_FUNC_JTAG_DISABLE);
 215 }
 216
 217 static void rb750gr3_latch_change(u32 mask_clr, u32 mask_set)
 218 {
 219         static DEFINE_SPINLOCK(lock);
 220         static u32 latch_set = RB7XX_LED_ACT;
 221         static u32 latch_clr;
 222         void __iomem *base = ath79_gpio_base;
 223         unsigned long flags;
 224         u32 t;
 225
 226         spin_lock_irqsave(&lock, flags);
 227
 228         latch_set = (latch_set | mask_set) & ~mask_clr;
 229         latch_clr = (latch_clr | mask_clr) & ~mask_set;
 230
 231         mask_set = latch_set & (RB7XX_USB_POWERON | RB7XX_MONITOR);
 232         mask_clr = latch_clr & (RB7XX_USB_POWERON | RB7XX_MONITOR);
 233
 234         if ((latch_set ^ RB7XX_LED_ACT) & RB7XX_LED_ACT) {
 235                 /* enable 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                 mask_clr |= RB7XX_LED_ACT;
 241         } else {
 242                 /* disable output mode */
 243                 t = __raw_readl(base + AR71XX_GPIO_REG_OE);
 244                 t &= ~RB7XX_LED_ACT;
 245                 __raw_writel(t, base + AR71XX_GPIO_REG_OE);
 246         }
 247
 248         __raw_writel(mask_set, base + AR71XX_GPIO_REG_SET);
 249         __raw_writel(mask_clr, base + AR71XX_GPIO_REG_CLEAR);
 250
 251         spin_unlock_irqrestore(&lock, flags);
 252 }
 253
 254 static void __init rb750gr3_setup(void)
 255 {
 256         ath79_register_mdio(0, 0x0);
 257         mdiobus_register_board_info(rb750g3_mdio_info,
 258                                     ARRAY_SIZE(rb750g3_mdio_info));
 259
 260         ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
 261         ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 262         ath79_eth0_data.phy_mask = BIT(0);
 263
 264         ath79_register_eth(0);
 265
 266         rb750_leds_data.num_leds = ARRAY_SIZE(rb750gr3_leds);
 267         rb750_leds_data.leds = rb750gr3_leds;
 268         rb750_leds_data.latch_change = rb750gr3_latch_change;
 269         platform_device_register(&rb750_leds_device);
 270
 271         rb750_nand_data.nce_line = RB7XX_NAND_NCE;
 272         rb750_nand_data.enable_pins = rb750gr3_nand_enable_pins;
 273         rb750_nand_data.disable_pins = rb750gr3_nand_disable_pins;
 274         rb750_nand_data.latch_change = rb750gr3_latch_change;
 275         platform_device_register(&rb750_nand_device);
 276 }
 277
 278 MIPS_MACHINE(ATH79_MACH_RB_750G_R3, "750Gr3", "MikroTik RouterBOARD 750GL",
 279              rb750gr3_setup);
 280
 281 static struct ath9k_platform_data rb751_wmac_data = {
 282         .led_pin = -1,
 283 };
 284
 285 static u8 rb751_wmac_mac[6];
 286
 287 static int rb751_pci_plat_dev_init(struct pci_dev *dev)
 288 {
 289         switch (PCI_SLOT(dev->devfn)) {
 290         case 0:
 291                 dev->dev.platform_data = &rb751_wmac_data;
 292                 break;
 293         }
 294
 295         return 0;
 296 }
 297
 298 static int decode_rle(char *output, int len, char *in)
 299 {
 300         char *ptr = output;
 301         char *end = output + len;
 302
 303         if (!output || !in)
 304                 return -EINVAL;
 305
 306         while (*in) {
 307                 if (*in < 0) {
 308                         int i = -*in++;
 309                         while (i-- > 0) {
 310                                 if (ptr >= end)
 311                                         return -EINVAL;
 312                                 *ptr++ = *in++;
 313                         }
 314                 } else if (*in > 0) {
 315                         int i = *in++;
 316                         while (i-- > 0) {
 317                                 if (ptr >= end)
 318                                         return -EINVAL;
 319                                 *ptr++ = *in;
 320                         }
 321                         in++;
 322                 }
 323         }
 324
 325         return ptr - output;
 326 }
 327
 328 #define RB751_HARDCONFIG 0x1f00b000
 329 #define RB751_MAC_ADDRESS_OFFSET 0xE80
 330 #define RB751_CALDATA_OFFSET 0x27C
 331
 332 static void __init rb751_wlan_setup(void)
 333 {
 334         u8 *hardconfig = (u8 *) KSEG1ADDR(RB751_HARDCONFIG);
 335
 336         ath79_pci_set_plat_dev_init(rb751_pci_plat_dev_init);
 337         ath79_register_pci();
 338
 339         rb751_wmac_data.macaddr = memcpy(rb751_wmac_mac,
 340                         hardconfig + RB751_MAC_ADDRESS_OFFSET, 6);
 341
 342         if (decode_rle((char *)rb751_wmac_data.eeprom_data,
 343                         sizeof(rb751_wmac_data.eeprom_data),
 344                         hardconfig + RB751_CALDATA_OFFSET) ==
 345                         sizeof(rb751_wmac_data.eeprom_data)) {
 346                 pr_info("rb7xx: calibration data found\n");
 347                 pci_enable_ath9k_fixup(0, rb751_wmac_data.eeprom_data);
 348         }
 349 }
 350
 351 static void __init rb751_setup(void)
 352 {
 353         rb750_setup();
 354         ath79_register_usb();
 355         rb751_wlan_setup();
 356 }
 357
 358 MIPS_MACHINE(ATH79_MACH_RB_751, "751", "MikroTik RouterBOARD 751",
 359              rb751_setup);
 360
 361 static void __init rb751g_setup(void)
 362 {
 363         rb750gr3_setup();
 364         ath79_register_usb();
 365         rb751_wlan_setup();
 366 }
 367
 368 MIPS_MACHINE(ATH79_MACH_RB_751G, "751g", "MikroTik RouterBOARD 751G",
 369              rb751g_setup);