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