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