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