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

   1 /*
   2  *  MikroTik RouterBOARD SXT Lite support
   3  *
   4  *  Copyright (C) 2012 Stijn Tintel <stijn@linux-ipv6.be>
   5  *  Copyright (C) 2012 Gabor Juhos <juhosg@openwrt.org>
   6  *  Copyright (C) 2013 Vyacheslav Adamanov <adamanov@gmail.com>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify it
   9  *  under the terms of the GNU General Public License version 2 as published
  10  *  by the Free Software Foundation.
  11  */
  12
  13 #define pr_fmt(fmt) "sxtlite: " fmt
  14
  15 #include <linux/phy.h>
  16 #include <linux/delay.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/ath9k_platform.h>
  19 #include <linux/mtd/mtd.h>
  20 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
  21 #include <linux/mtd/nand.h>
  22 #else
  23 #include <linux/mtd/rawnand.h>
  24 #endif
  25 #include <linux/mtd/partitions.h>
  26 #include <linux/spi/spi.h>
  27 #include <linux/spi/flash.h>
  28 #include <linux/rle.h>
  29 #include <linux/routerboot.h>
  30 #include <linux/gpio.h>
  31 #include <linux/version.h>
  32
  33 #include <asm/mach-ath79/ath79.h>
  34 #include <asm/mach-ath79/ar71xx_regs.h>
  35 #include "common.h"
  36 #include "dev-ap9x-pci.h"
  37 #include "dev-gpio-buttons.h"
  38 #include "dev-leds-gpio.h"
  39 #include "dev-eth.h"
  40 #include "dev-m25p80.h"
  41 #include "dev-nfc.h"
  42 #include "dev-wmac.h"
  43 #include "dev-usb.h"
  44 #include "machtypes.h"
  45 #include "routerboot.h"
  46 #include <linux/ar8216_platform.h>
  47
  48 #define SXTLITE_GPIO_NAND_NCE  14
  49 #define SXTLITE_GPIO_LED_USER 3
  50 #define SXTLITE_GPIO_LED_1 13
  51 #define SXTLITE_GPIO_LED_2 12
  52 #define SXTLITE_GPIO_LED_3 4
  53 #define SXTLITE_GPIO_LED_4 21
  54 #define SXTLITE_GPIO_LED_5 18
  55 #define SXTLITE_GPIO_LED_POWER 11
  56
  57 #define SXTLITE_GPIO_BUZZER 19
  58
  59 #define SXTLITE_GPIO_BTN_RESET 15
  60
  61 #define SXTLITE_KEYS_POLL_INTERVAL 20
  62 #define SXTLITE_KEYS_DEBOUNCE_INTERVAL (3 * SXTLITE_KEYS_POLL_INTERVAL)
  63
  64 static struct mtd_partition rbsxtlite_nand_partitions[] = {
  65         {
  66                 .name   = "booter",
  67                 .offset = 0,
  68                 .size   = (256 * 1024),
  69                 .mask_flags = MTD_WRITEABLE,
  70         },
  71         {
  72                 .name   = "kernel",
  73                 .offset = (256 * 1024),
  74                 .size   = (4 * 1024 * 1024) - (256 * 1024),
  75         },
  76         {
  77                 .name   = "ubi",
  78                 .offset = MTDPART_OFS_NXTBLK,
  79                 .size   = MTDPART_SIZ_FULL,
  80         },
  81 };
  82
  83 static struct gpio_led rbsxtlite_leds_gpio[] __initdata = {
  84         {
  85                 .name           =       "rb:green:user",
  86                 .gpio           =       SXTLITE_GPIO_LED_USER,
  87                 .active_low     =       1,
  88         },
  89         {
  90                 .name           =       "rb:green:led1",
  91                 .gpio           =       SXTLITE_GPIO_LED_1,
  92                 .active_low     =       1,
  93         },
  94         {
  95                 .name           =       "rb:green:led2",
  96                 .gpio           =       SXTLITE_GPIO_LED_2,
  97                 .active_low     =       1,
  98         },
  99         {
 100                 .name           =       "rb:green:led3",
 101                 .gpio           =       SXTLITE_GPIO_LED_3,
 102                 .active_low     =       1,
 103         },
 104         {
 105                 .name           =       "rb:green:led4",
 106                 .gpio           =       SXTLITE_GPIO_LED_4,
 107                 .active_low     =       1,
 108         },
 109         {
 110                 .name           =       "rb:green:led5",
 111                 .gpio           =       SXTLITE_GPIO_LED_5,
 112                 .active_low     =       1,
 113         },
 114         {
 115                 .name           =       "rb:green:power",
 116                 .gpio           =       SXTLITE_GPIO_LED_POWER,
 117                 .default_state  =       LEDS_GPIO_DEFSTATE_KEEP,
 118         },
 119 };
 120
 121 static struct gpio_keys_button rbsxtlite_gpio_keys[] __initdata = {
 122         {
 123                 .desc           =       "Reset button",
 124                 .type           =       EV_KEY,
 125                 .code           =       KEY_RESTART,
 126                 .debounce_interval      =       SXTLITE_KEYS_DEBOUNCE_INTERVAL,
 127                 .gpio           =       SXTLITE_GPIO_BTN_RESET,
 128                 .active_low     =       0,
 129         },
 130 };
 131
 132 static int __init rbsxtlite_rbinfo_init(void)
 133 {
 134         const struct rb_info *info;
 135
 136         info = rb_init_info((void *)(KSEG1ADDR(AR71XX_SPI_BASE)), 0x10000);
 137         if (!info)
 138                 return -EINVAL;
 139         return 0;
 140
 141 }
 142
 143 void __init rbsxtlite_wlan_init(void)
 144 {
 145         char *art_buf;
 146         u8 wlan_mac[ETH_ALEN];
 147
 148         art_buf = rb_get_wlan_data();
 149         if (art_buf == NULL)
 150                 return;
 151
 152         ath79_init_mac(wlan_mac, ath79_mac_base, 1);
 153         ath79_register_wmac(art_buf + 0x1000, wlan_mac);
 154
 155         kfree(art_buf);
 156 }
 157
 158 static void rbsxtlite_nand_select_chip(int chip_no)
 159 {
 160         switch (chip_no) {
 161         case 0:
 162                 gpio_set_value(SXTLITE_GPIO_NAND_NCE, 0);
 163                 break;
 164         default:
 165                 gpio_set_value(SXTLITE_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 rbsxtlite_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 rbsxtlite_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 rbsxtlite_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 rbsxtlite_nand_ecclayout_ops = {
 224         .ecc = rbsxtlite_ooblayout_ecc,
 225         .free = rbsxtlite_ooblayout_free,
 226 };
 227 #endif /* < 4.6 */
 228
 229 static int rbsxtlite_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 #endif
 234
 235         if (mtd->writesize == 512) {
 236                 /*
 237                 * Use the OLD Yaffs-1 OOB layout, otherwise RouterBoot
 238                 * will not be able to find the kernel that we load.
 239                 */
 240 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 241                 chip->ecc.layout = &rbsxtlite_nand_ecclayout;
 242 #else
 243                 mtd_set_ooblayout(mtd, &rbsxtlite_nand_ecclayout_ops);
 244 #endif
 245         }
 246
 247         return 0;
 248 }
 249
 250 void __init rbsxtlite_gpio_init(void)
 251 {
 252         gpio_request_one(SXTLITE_GPIO_NAND_NCE, GPIOF_OUT_INIT_HIGH, "NAND nCE");
 253 }
 254
 255 void __init rbsxtlite_nand_init(void)
 256 {
 257         ath79_nfc_set_scan_fixup(rbsxtlite_nand_scan_fixup);
 258         ath79_nfc_set_parts(rbsxtlite_nand_partitions,
 259                            ARRAY_SIZE(rbsxtlite_nand_partitions));
 260         ath79_nfc_set_select_chip(rbsxtlite_nand_select_chip);
 261         ath79_nfc_set_swap_dma(true);
 262         ath79_register_nfc();
 263 }
 264
 265
 266 static void __init rbsxtlite_setup(void)
 267 {
 268         if(rbsxtlite_rbinfo_init())
 269                 return;
 270         rbsxtlite_nand_init();
 271         rbsxtlite_wlan_init();
 272
 273         ath79_register_leds_gpio(-1, ARRAY_SIZE(rbsxtlite_leds_gpio),
 274                                  rbsxtlite_leds_gpio);
 275         ath79_register_gpio_keys_polled(-1, SXTLITE_KEYS_POLL_INTERVAL,
 276                                         ARRAY_SIZE(rbsxtlite_gpio_keys),
 277                                         rbsxtlite_gpio_keys);
 278
 279         ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_SW_ONLY_MODE);
 280
 281         ath79_register_mdio(1, 0x0);
 282
 283         /* GMAC0 is left unused */
 284
 285         /* GMAC1 is connected to MAC0 on the internal switch */
 286         /* The ethernet port connects to PHY P0, which connects to MAC1
 287            on the internal switch */
 288         ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 0);
 289         ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
 290         ath79_register_eth(1);
 291
 292
 293 }
 294
 295
 296 MIPS_MACHINE(ATH79_MACH_RB_SXTLITE2ND, "sxt2n", "MikroTik RouterBOARD SXT Lite2",
 297             rbsxtlite_setup);
 298
 299 MIPS_MACHINE(ATH79_MACH_RB_SXTLITE5ND, "sxt5n", "MikroTik RouterBOARD SXT Lite5",
 300             rbsxtlite_setup);
 301