target/linux/ar71xx/files/arch/mips/ath79/mach-rb922.c

   1 /*
   2  *  MikroTik RouterBOARD 92X support
   3  *
   4  *  Copyright (C) 2015 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/version.h>
  12 #include <linux/phy.h>
  13 #include <linux/delay.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/ath9k_platform.h>
  16 #include <linux/mtd/mtd.h>
  17 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
  18 #include <linux/mtd/nand.h>
  19 #else
  20 #include <linux/mtd/rawnand.h>
  21 #endif
  22 #include <linux/mtd/partitions.h>
  23 #include <linux/spi/spi.h>
  24 #include <linux/spi/flash.h>
  25 #include <linux/routerboot.h>
  26 #include <linux/gpio.h>
  27 #include <linux/platform_data/phy-at803x.h>
  28 #include <linux/version.h>
  29
  30 #include <asm/prom.h>
  31 #include <asm/mach-ath79/ath79.h>
  32 #include <asm/mach-ath79/ar71xx_regs.h>
  33
  34 #include "common.h"
  35 #include "dev-gpio-buttons.h"
  36 #include "dev-eth.h"
  37 #include "dev-leds-gpio.h"
  38 #include "dev-m25p80.h"
  39 #include "dev-nfc.h"
  40 #include "dev-usb.h"
  41 #include "dev-spi.h"
  42 #include "machtypes.h"
  43 #include "pci.h"
  44 #include "routerboot.h"
  45
  46 #define RB922_GPIO_LED_USR      12
  47 #define RB922_GPIO_USB_POWER    13
  48 #define RB922_GPIO_FAN_CTRL     14
  49 #define RB922_GPIO_BTN_RESET    20
  50 #define RB922_GPIO_NAND_NCE     23
  51
  52 #define RB92X_FLAG_USB          BIT(0)
  53 #define RB92X_FLAG_USB_POWER    BIT(1)
  54 #define RB92X_FLAG_PCIE         BIT(2)
  55
  56 #define RB922_PHY_ADDR          4
  57
  58 #define RB922_KEYS_POLL_INTERVAL        20      /* msecs */
  59 #define RB922_KEYS_DEBOUNCE_INTERVAL    (3 * RB922_KEYS_POLL_INTERVAL)
  60
  61 #define RB_ROUTERBOOT_OFFSET    0x0000
  62 #define RB_ROUTERBOOT_MIN_SIZE  0xb000
  63 #define RB_HARD_CFG_SIZE        0x1000
  64 #define RB_BIOS_OFFSET          0xd000
  65 #define RB_BIOS_SIZE            0x1000
  66 #define RB_SOFT_CFG_OFFSET      0xf000
  67 #define RB_SOFT_CFG_SIZE        0x1000
  68
  69 struct rb_board_info {
  70         const char *name;
  71         u32 flags;
  72 };
  73
  74 static struct mtd_partition rb922gs_spi_partitions[] = {
  75         {
  76                 .name           = "routerboot",
  77                 .offset         = RB_ROUTERBOOT_OFFSET,
  78                 .mask_flags     = MTD_WRITEABLE,
  79         }, {
  80                 .name           = "hard_config",
  81                 .size           = RB_HARD_CFG_SIZE,
  82                 .mask_flags     = MTD_WRITEABLE,
  83         }, {
  84                 .name           = "bios",
  85                 .offset         = RB_BIOS_OFFSET,
  86                 .size           = RB_BIOS_SIZE,
  87                 .mask_flags     = MTD_WRITEABLE,
  88         }, {
  89                 .name           = "soft_config",
  90                 .size           = RB_SOFT_CFG_SIZE,
  91         }
  92 };
  93
  94 static void __init rb922gs_init_partitions(const struct rb_info *info)
  95 {
  96         rb922gs_spi_partitions[0].size = info->hard_cfg_offs;
  97         rb922gs_spi_partitions[1].offset = info->hard_cfg_offs;
  98         rb922gs_spi_partitions[3].offset = info->soft_cfg_offs;
  99 }
 100
 101 static struct mtd_partition rb922gs_nand_partitions[] = {
 102         {
 103                 .name   = "booter",
 104                 .offset = 0,
 105                 .size   = (256 * 1024),
 106                 .mask_flags = MTD_WRITEABLE,
 107         },
 108         {
 109                 .name   = "kernel",
 110                 .offset = (256 * 1024),
 111                 .size   = (4 * 1024 * 1024) - (256 * 1024),
 112         },
 113         {
 114                 .name   = "ubi",
 115                 .offset = MTDPART_OFS_NXTBLK,
 116                 .size   = MTDPART_SIZ_FULL,
 117         },
 118 };
 119
 120 static struct flash_platform_data rb922gs_spi_flash_data = {
 121         .parts          = rb922gs_spi_partitions,
 122         .nr_parts       = ARRAY_SIZE(rb922gs_spi_partitions),
 123 };
 124
 125 static struct gpio_led rb922gs_leds[] __initdata = {
 126         {
 127                 .name           = "rb:green:user",
 128                 .gpio           = RB922_GPIO_LED_USR,
 129                 .active_low     = 1,
 130         },
 131 };
 132
 133 static struct gpio_keys_button rb922gs_gpio_keys[] __initdata = {
 134         {
 135                 .desc           = "Reset button",
 136                 .type           = EV_KEY,
 137                 .code           = KEY_RESTART,
 138                 .debounce_interval = RB922_KEYS_DEBOUNCE_INTERVAL,
 139                 .gpio           = RB922_GPIO_BTN_RESET,
 140                 .active_low     = 1,
 141         },
 142 };
 143
 144 static struct at803x_platform_data rb922gs_at803x_data = {
 145         .disable_smarteee = 1,
 146 };
 147
 148 static struct mdio_board_info rb922gs_mdio0_info[] = {
 149         {
 150                 .bus_id = "ag71xx-mdio.0",
 151                 .mdio_addr = RB922_PHY_ADDR,
 152                 .platform_data = &rb922gs_at803x_data,
 153         },
 154 };
 155
 156
 157
 158 static void rb922gs_nand_select_chip(int chip_no)
 159 {
 160         switch (chip_no) {
 161         case 0:
 162                 gpio_set_value(RB922_GPIO_NAND_NCE, 0);
 163                 break;
 164         default:
 165                 gpio_set_value(RB922_GPIO_NAND_NCE, 1);
 166                 break;
 167         }
 168         ndelay(500);
 169 }
 170
 171 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 172 static struct nand_ecclayout rb922gs_nand_ecclayout = {
 173         .eccbytes       = 6,
 174         .eccpos         = { 8, 9, 10, 13, 14, 15 },
 175         .oobavail       = 9,
 176         .oobfree        = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
 177 };
 178
 179 #else
 180
 181 static int rb922gs_ooblayout_ecc(struct mtd_info *mtd, int section,
 182                                  struct mtd_oob_region *oobregion)
 183 {
 184         switch (section) {
 185         case 0:
 186                 oobregion->offset = 8;
 187                 oobregion->length = 3;
 188                 return 0;
 189         case 1:
 190                 oobregion->offset = 13;
 191                 oobregion->length = 3;
 192                 return 0;
 193         default:
 194                 return -ERANGE;
 195         }
 196 }
 197
 198 static int rb922gs_ooblayout_free(struct mtd_info *mtd, int section,
 199                                   struct mtd_oob_region *oobregion)
 200 {
 201         switch (section) {
 202         case 0:
 203                 oobregion->offset = 0;
 204                 oobregion->length = 4;
 205                 return 0;
 206         case 1:
 207                 oobregion->offset = 4;
 208                 oobregion->length = 1;
 209                 return 0;
 210         case 2:
 211                 oobregion->offset = 6;
 212                 oobregion->length = 2;
 213                 return 0;
 214         case 3:
 215                 oobregion->offset = 11;
 216                 oobregion->length = 2;
 217                 return 0;
 218         default:
 219                 return -ERANGE;
 220         }
 221 }
 222
 223 static const struct mtd_ooblayout_ops rb922gs_nand_ecclayout_ops = {
 224         .ecc = rb922gs_ooblayout_ecc,
 225         .free = rb922gs_ooblayout_free,
 226 };
 227 #endif /* < 4.6 */
 228
 229 static int rb922gs_nand_scan_fixup(struct mtd_info *mtd)
 230 {
 231 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 232         struct nand_chip *chip = mtd->priv;
 233 #else
 234         struct nand_chip *chip = mtd_to_nand(mtd);
 235 #endif /* < 4.6.0 */
 236
 237         if (mtd->writesize == 512) {
 238                 /*
 239                  * Use the OLD Yaffs-1 OOB layout, otherwise RouterBoot
 240                  * will not be able to find the kernel that we load.
 241                  */
 242 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 243                 chip->ecc.layout = &rb922gs_nand_ecclayout;
 244 #else
 245                 mtd_set_ooblayout(mtd, &rb922gs_nand_ecclayout_ops);
 246 #endif
 247         }
 248
 249         chip->options = NAND_NO_SUBPAGE_WRITE;
 250
 251         return 0;
 252 }
 253
 254 static void __init rb922gs_nand_init(void)
 255 {
 256         gpio_request_one(RB922_GPIO_NAND_NCE, GPIOF_OUT_INIT_HIGH, "NAND nCE");
 257
 258         ath79_nfc_set_scan_fixup(rb922gs_nand_scan_fixup);
 259         ath79_nfc_set_parts(rb922gs_nand_partitions,
 260                             ARRAY_SIZE(rb922gs_nand_partitions));
 261         ath79_nfc_set_select_chip(rb922gs_nand_select_chip);
 262         ath79_nfc_set_swap_dma(true);
 263         ath79_register_nfc();
 264 }
 265
 266 #define RB_BOARD_INFO(_name, _flags)    \
 267         {                               \
 268                 .name = (_name),        \
 269                 .flags = (_flags),      \
 270         }
 271
 272 static const struct rb_board_info rb92x_boards[] __initconst = {
 273         RB_BOARD_INFO("921GS-5HPacD r2", RB92X_FLAG_PCIE),
 274         RB_BOARD_INFO("922UAGS-5HPacD", RB92X_FLAG_USB | RB92X_FLAG_USB_POWER | RB92X_FLAG_PCIE),
 275 };
 276
 277 static u32 rb92x_get_flags(const struct rb_info *info)
 278 {
 279         int i;
 280
 281         for (i = 0; i < ARRAY_SIZE(rb92x_boards); i++) {
 282                 const struct rb_board_info *bi;
 283
 284                 bi = &rb92x_boards[i];
 285                 if (strcmp(info->board_name, bi->name) == 0)
 286                         return bi->flags;
 287         }
 288
 289         return 0;
 290 }
 291
 292 static void __init rb922gs_setup(void)
 293 {
 294         const struct rb_info *info;
 295         char buf[64];
 296         u32 flags;
 297
 298         info = rb_init_info((void *) KSEG1ADDR(0x1f000000), 0x10000);
 299         if (!info)
 300                 return;
 301
 302         scnprintf(buf, sizeof(buf), "MikroTik RouterBOARD %s",
 303                   (info->board_name) ? info->board_name : "");
 304         mips_set_machine_name(buf);
 305
 306         rb922gs_init_partitions(info);
 307         ath79_register_m25p80(&rb922gs_spi_flash_data);
 308
 309         rb922gs_nand_init();
 310
 311         ath79_setup_qca955x_eth_cfg(QCA955X_ETH_CFG_RGMII_EN);
 312
 313         ath79_register_mdio(0, 0x0);
 314
 315         mdiobus_register_board_info(rb922gs_mdio0_info,
 316                                     ARRAY_SIZE(rb922gs_mdio0_info));
 317
 318         ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
 319         ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
 320         ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 321         ath79_eth0_data.phy_mask = BIT(RB922_PHY_ADDR);
 322         if (strcmp(info->board_name, "921GS-5HPacD r2") == 0 ||
 323             strcmp(info->board_name, "922UAGS-5HPacD") == 0)
 324         {
 325                 ath79_eth0_pll_data.pll_10 = 0xa0001313;
 326                 ath79_eth0_pll_data.pll_100 = 0xa0000101;
 327                 ath79_eth0_pll_data.pll_1000 = 0x8f000000;
 328         }
 329         else {
 330                 ath79_eth0_pll_data.pll_10 = 0x81001313;
 331                 ath79_eth0_pll_data.pll_100 = 0x81000101;
 332                 ath79_eth0_pll_data.pll_1000 = 0x8f000000;
 333         }
 334
 335         ath79_register_eth(0);
 336
 337         flags = rb92x_get_flags(info);
 338
 339         if (flags & RB92X_FLAG_USB)
 340                 ath79_register_usb();
 341
 342         if (flags & RB92X_FLAG_USB_POWER)
 343                 gpio_request_one(RB922_GPIO_USB_POWER, GPIOF_OUT_INIT_LOW |
 344                         GPIOF_EXPORT_DIR_FIXED, "USB power");
 345
 346         if (flags & RB92X_FLAG_PCIE)
 347                 ath79_register_pci();
 348
 349         ath79_register_leds_gpio(-1, ARRAY_SIZE(rb922gs_leds), rb922gs_leds);
 350         ath79_register_gpio_keys_polled(-1, RB922_KEYS_POLL_INTERVAL,
 351                                         ARRAY_SIZE(rb922gs_gpio_keys),
 352                                         rb922gs_gpio_keys);
 353
 354         /* NOTE:
 355          * This only supports the RB911G-5HPacD board for now. For other boards
 356          * more devices must be registered based on the hardware options which
 357          * can be found in the hardware configuration of RouterBOOT.
 358          */
 359 }
 360
 361 MIPS_MACHINE_NONAME(ATH79_MACH_RB_922GS, "922gs", rb922gs_setup);