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

   1 /*
   2  *  MikroTik RouterBOARD 91X 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 RB922_PHY_ADDR          4
  53
  54 #define RB922_KEYS_POLL_INTERVAL        20      /* msecs */
  55 #define RB922_KEYS_DEBOUNCE_INTERVAL    (3 * RB922_KEYS_POLL_INTERVAL)
  56
  57 #define RB_ROUTERBOOT_OFFSET    0x0000
  58 #define RB_ROUTERBOOT_MIN_SIZE  0xb000
  59 #define RB_HARD_CFG_SIZE        0x1000
  60 #define RB_BIOS_OFFSET          0xd000
  61 #define RB_BIOS_SIZE            0x1000
  62 #define RB_SOFT_CFG_OFFSET      0xf000
  63 #define RB_SOFT_CFG_SIZE        0x1000
  64
  65 static struct mtd_partition rb922gs_spi_partitions[] = {
  66         {
  67                 .name           = "routerboot",
  68                 .offset         = RB_ROUTERBOOT_OFFSET,
  69                 .mask_flags     = MTD_WRITEABLE,
  70         }, {
  71                 .name           = "hard_config",
  72                 .size           = RB_HARD_CFG_SIZE,
  73                 .mask_flags     = MTD_WRITEABLE,
  74         }, {
  75                 .name           = "bios",
  76                 .offset         = RB_BIOS_OFFSET,
  77                 .size           = RB_BIOS_SIZE,
  78                 .mask_flags     = MTD_WRITEABLE,
  79         }, {
  80                 .name           = "soft_config",
  81                 .size           = RB_SOFT_CFG_SIZE,
  82         }
  83 };
  84
  85 static struct flash_platform_data rb922gs_spi_flash_data = {
  86         .parts          = rb922gs_spi_partitions,
  87         .nr_parts       = ARRAY_SIZE(rb922gs_spi_partitions),
  88 };
  89
  90 static struct gpio_led rb922gs_leds[] __initdata = {
  91         {
  92                 .name           = "rb:green:user",
  93                 .gpio           = RB922_GPIO_LED_USR,
  94                 .active_low     = 1,
  95         },
  96 };
  97
  98 static struct gpio_keys_button rb922gs_gpio_keys[] __initdata = {
  99         {
 100                 .desc           = "Reset button",
 101                 .type           = EV_KEY,
 102                 .code           = KEY_RESTART,
 103                 .debounce_interval = RB922_KEYS_DEBOUNCE_INTERVAL,
 104                 .gpio           = RB922_GPIO_BTN_RESET,
 105                 .active_low     = 1,
 106         },
 107 };
 108
 109 static struct at803x_platform_data rb922gs_at803x_data = {
 110         .disable_smarteee = 1,
 111 };
 112
 113 static struct mdio_board_info rb922gs_mdio0_info[] = {
 114         {
 115                 .bus_id = "ag71xx-mdio.0",
 116                 .mdio_addr = RB922_PHY_ADDR,
 117                 .platform_data = &rb922gs_at803x_data,
 118         },
 119 };
 120
 121 static void __init rb922gs_init_partitions(const struct rb_info *info)
 122 {
 123         rb922gs_spi_partitions[0].size = info->hard_cfg_offs;
 124         rb922gs_spi_partitions[1].offset = info->hard_cfg_offs;
 125         rb922gs_spi_partitions[3].offset = info->soft_cfg_offs;
 126 }
 127
 128 static void rb922gs_nand_select_chip(int chip_no)
 129 {
 130         switch (chip_no) {
 131         case 0:
 132                 gpio_set_value(RB922_GPIO_NAND_NCE, 0);
 133                 break;
 134         default:
 135                 gpio_set_value(RB922_GPIO_NAND_NCE, 1);
 136                 break;
 137         }
 138         ndelay(500);
 139 }
 140
 141 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 142 static struct nand_ecclayout rb922gs_nand_ecclayout = {
 143         .eccbytes       = 6,
 144         .eccpos         = { 8, 9, 10, 13, 14, 15 },
 145         .oobavail       = 9,
 146         .oobfree        = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
 147 };
 148
 149 #else
 150
 151 static int rb922gs_ooblayout_ecc(struct mtd_info *mtd, int section,
 152                                  struct mtd_oob_region *oobregion)
 153 {
 154         switch (section) {
 155         case 0:
 156                 oobregion->offset = 8;
 157                 oobregion->length = 3;
 158                 return 0;
 159         case 1:
 160                 oobregion->offset = 13;
 161                 oobregion->length = 3;
 162                 return 0;
 163         default:
 164                 return -ERANGE;
 165         }
 166 }
 167
 168 static int rb922gs_ooblayout_free(struct mtd_info *mtd, int section,
 169                                   struct mtd_oob_region *oobregion)
 170 {
 171         switch (section) {
 172         case 0:
 173                 oobregion->offset = 0;
 174                 oobregion->length = 4;
 175                 return 0;
 176         case 1:
 177                 oobregion->offset = 4;
 178                 oobregion->length = 1;
 179                 return 0;
 180         case 2:
 181                 oobregion->offset = 6;
 182                 oobregion->length = 2;
 183                 return 0;
 184         case 3:
 185                 oobregion->offset = 11;
 186                 oobregion->length = 2;
 187                 return 0;
 188         default:
 189                 return -ERANGE;
 190         }
 191 }
 192
 193 static const struct mtd_ooblayout_ops rb922gs_nand_ecclayout_ops = {
 194         .ecc = rb922gs_ooblayout_ecc,
 195         .free = rb922gs_ooblayout_free,
 196 };
 197 #endif /* < 4.6 */
 198
 199 static int rb922gs_nand_scan_fixup(struct mtd_info *mtd)
 200 {
 201 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 202         struct nand_chip *chip = mtd->priv;
 203 #else
 204         struct nand_chip *chip = mtd_to_nand(mtd);
 205 #endif /* < 4.6.0 */
 206
 207         if (mtd->writesize == 512) {
 208                 /*
 209                  * Use the OLD Yaffs-1 OOB layout, otherwise RouterBoot
 210                  * will not be able to find the kernel that we load.
 211                  */
 212 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 213                 chip->ecc.layout = &rb922gs_nand_ecclayout;
 214 #else
 215                 mtd_set_ooblayout(mtd, &rb922gs_nand_ecclayout_ops);
 216 #endif
 217         }
 218
 219         chip->options = NAND_NO_SUBPAGE_WRITE;
 220
 221         return 0;
 222 }
 223
 224 static struct mtd_partition rb922gs_nand_partitions[] = {
 225         {
 226                 .name   = "booter",
 227                 .offset = 0,
 228                 .size   = (256 * 1024),
 229                 .mask_flags = MTD_WRITEABLE,
 230         },
 231         {
 232                 .name   = "kernel",
 233                 .offset = (256 * 1024),
 234                 .size   = (4 * 1024 * 1024) - (256 * 1024),
 235         },
 236         {
 237                 .name   = "ubi",
 238                 .offset = MTDPART_OFS_NXTBLK,
 239                 .size   = MTDPART_SIZ_FULL,
 240         },
 241 };
 242
 243 static void __init rb922gs_nand_init(void)
 244 {
 245         gpio_request_one(RB922_GPIO_NAND_NCE, GPIOF_OUT_INIT_HIGH, "NAND nCE");
 246
 247         ath79_nfc_set_scan_fixup(rb922gs_nand_scan_fixup);
 248         ath79_nfc_set_parts(rb922gs_nand_partitions,
 249                             ARRAY_SIZE(rb922gs_nand_partitions));
 250         ath79_nfc_set_select_chip(rb922gs_nand_select_chip);
 251         ath79_nfc_set_swap_dma(true);
 252         ath79_register_nfc();
 253 }
 254
 255 static void __init rb922gs_setup(void)
 256 {
 257         const struct rb_info *info;
 258         char buf[64];
 259
 260         info = rb_init_info((void *) KSEG1ADDR(0x1f000000), 0x10000);
 261         if (!info)
 262                 return;
 263
 264         scnprintf(buf, sizeof(buf), "MikroTik RouterBOARD %s",
 265                   (info->board_name) ? info->board_name : "");
 266         mips_set_machine_name(buf);
 267
 268         rb922gs_init_partitions(info);
 269         ath79_register_m25p80(&rb922gs_spi_flash_data);
 270
 271         rb922gs_nand_init();
 272
 273         ath79_setup_qca955x_eth_cfg(QCA955X_ETH_CFG_RGMII_EN);
 274
 275         ath79_register_mdio(0, 0x0);
 276
 277         mdiobus_register_board_info(rb922gs_mdio0_info,
 278                                     ARRAY_SIZE(rb922gs_mdio0_info));
 279
 280         ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
 281         ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
 282         ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 283         ath79_eth0_data.phy_mask = BIT(RB922_PHY_ADDR);
 284         if (strcmp(info->board_name, "921GS-5HPacD r2") == 0) {
 285                 ath79_eth0_pll_data.pll_10 = 0xa0001313;
 286                 ath79_eth0_pll_data.pll_100 = 0xa0000101;
 287                 ath79_eth0_pll_data.pll_1000 = 0x8f000000;
 288         }
 289         else {
 290                 ath79_eth0_pll_data.pll_10 = 0x81001313;
 291                 ath79_eth0_pll_data.pll_100 = 0x81000101;
 292                 ath79_eth0_pll_data.pll_1000 = 0x8f000000;
 293         }
 294
 295         ath79_register_eth(0);
 296
 297         ath79_register_pci();
 298         ath79_register_leds_gpio(-1, ARRAY_SIZE(rb922gs_leds), rb922gs_leds);
 299         ath79_register_gpio_keys_polled(-1, RB922_KEYS_POLL_INTERVAL,
 300                                         ARRAY_SIZE(rb922gs_gpio_keys),
 301                                         rb922gs_gpio_keys);
 302
 303         /* NOTE:
 304          * This only supports the RB911G-5HPacD board for now. For other boards
 305          * more devices must be registered based on the hardware options which
 306          * can be found in the hardware configuration of RouterBOOT.
 307          */
 308 }
 309
 310 MIPS_MACHINE_NONAME(ATH79_MACH_RB_922GS, "922gs", rb922gs_setup);