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