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 #include <linux/mtd/nand.h>
  21 #include <linux/mtd/partitions.h>
  22 #include <linux/spi/spi.h>
  23 #include <linux/spi/flash.h>
  24 #include <linux/rle.h>
  25 #include <linux/routerboot.h>
  26 #include <linux/gpio.h>
  27 #include <linux/version.h>
  28
  29 #include <asm/mach-ath79/ath79.h>
  30 #include <asm/mach-ath79/ar71xx_regs.h>
  31 #include "common.h"
  32 #include "dev-ap9x-pci.h"
  33 #include "dev-gpio-buttons.h"
  34 #include "dev-leds-gpio.h"
  35 #include "dev-eth.h"
  36 #include "dev-m25p80.h"
  37 #include "dev-nfc.h"
  38 #include "dev-wmac.h"
  39 #include "dev-usb.h"
  40 #include "machtypes.h"
  41 #include "routerboot.h"
  42 #include <linux/ar8216_platform.h>
  43
  44 #define SXTLITE_GPIO_NAND_NCE  14
  45 #define SXTLITE_GPIO_LED_USER 3
  46 #define SXTLITE_GPIO_LED_1 13
  47 #define SXTLITE_GPIO_LED_2 12
  48 #define SXTLITE_GPIO_LED_3 4
  49 #define SXTLITE_GPIO_LED_4 21
  50 #define SXTLITE_GPIO_LED_5 18
  51 #define SXTLITE_GPIO_LED_POWER 11
  52
  53 #define SXTLITE_GPIO_BUZZER 19
  54
  55 #define SXTLITE_GPIO_BTN_RESET 15
  56
  57 #define SXTLITE_KEYS_POLL_INTERVAL 20
  58 #define SXTLITE_KEYS_DEBOUNCE_INTERVAL (3 * SXTLITE_KEYS_POLL_INTERVAL)
  59
  60 static struct mtd_partition rbsxtlite_nand_partitions[] = {
  61         {
  62                 .name   = "booter",
  63                 .offset = 0,
  64                 .size   = (256 * 1024),
  65                 .mask_flags = MTD_WRITEABLE,
  66         },
  67         {
  68                 .name   = "kernel",
  69                 .offset = (256 * 1024),
  70                 .size   = (4 * 1024 * 1024) - (256 * 1024),
  71         },
  72         {
  73                 .name   = "ubi",
  74                 .offset = MTDPART_OFS_NXTBLK,
  75                 .size   = MTDPART_SIZ_FULL,
  76         },
  77 };
  78
  79 static struct gpio_led rbsxtlite_leds_gpio[] __initdata = {
  80         {
  81                 .name           =       "rb:green:user",
  82                 .gpio           =       SXTLITE_GPIO_LED_USER,
  83                 .active_low     =       1,
  84         },
  85         {
  86                 .name           =       "rb:green:led1",
  87                 .gpio           =       SXTLITE_GPIO_LED_1,
  88                 .active_low     =       1,
  89         },
  90         {
  91                 .name           =       "rb:green:led2",
  92                 .gpio           =       SXTLITE_GPIO_LED_2,
  93                 .active_low     =       1,
  94         },
  95         {
  96                 .name           =       "rb:green:led3",
  97                 .gpio           =       SXTLITE_GPIO_LED_3,
  98                 .active_low     =       1,
  99         },
 100         {
 101                 .name           =       "rb:green:led4",
 102                 .gpio           =       SXTLITE_GPIO_LED_4,
 103                 .active_low     =       1,
 104         },
 105         {
 106                 .name           =       "rb:green:led5",
 107                 .gpio           =       SXTLITE_GPIO_LED_5,
 108                 .active_low     =       1,
 109         },
 110         {
 111                 .name           =       "rb:green:power",
 112                 .gpio           =       SXTLITE_GPIO_LED_POWER,
 113                 .default_state  =       LEDS_GPIO_DEFSTATE_KEEP,
 114         },
 115 };
 116
 117 static struct gpio_keys_button rbsxtlite_gpio_keys[] __initdata = {
 118         {
 119                 .desc           =       "Reset button",
 120                 .type           =       EV_KEY,
 121                 .code           =       KEY_RESTART,
 122                 .debounce_interval      =       SXTLITE_KEYS_DEBOUNCE_INTERVAL,
 123                 .gpio           =       SXTLITE_GPIO_BTN_RESET,
 124                 .active_low     =       0,
 125         },
 126 };
 127
 128 static int __init rbsxtlite_rbinfo_init(void)
 129 {
 130         const struct rb_info *info;
 131
 132         info = rb_init_info((void *)(KSEG1ADDR(AR71XX_SPI_BASE)), 0x10000);
 133         if (!info)
 134                 return -EINVAL;
 135         return 0;
 136
 137 }
 138
 139 void __init rbsxtlite_wlan_init(void)
 140 {
 141         char *art_buf;
 142         u8 wlan_mac[ETH_ALEN];
 143
 144         art_buf = rb_get_wlan_data();
 145         if (art_buf == NULL)
 146                 return;
 147
 148         ath79_init_mac(wlan_mac, ath79_mac_base, 1);
 149         ath79_register_wmac(art_buf + 0x1000, wlan_mac);
 150
 151         kfree(art_buf);
 152 }
 153
 154 static void rbsxtlite_nand_select_chip(int chip_no)
 155 {
 156         switch (chip_no) {
 157         case 0:
 158                 gpio_set_value(SXTLITE_GPIO_NAND_NCE, 0);
 159                 break;
 160         default:
 161                 gpio_set_value(SXTLITE_GPIO_NAND_NCE, 1);
 162                 break;
 163         }
 164         ndelay(500);
 165 }
 166
 167 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 168 static struct nand_ecclayout rbsxtlite_nand_ecclayout = {
 169         .eccbytes       = 6,
 170         .eccpos  = { 8, 9, 10, 13, 14, 15 },
 171         .oobavail       = 9,
 172         .oobfree        = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
 173 };
 174
 175 #else
 176
 177 static int rbsxtlite_ooblayout_ecc(struct mtd_info *mtd, int section,
 178                                    struct mtd_oob_region *oobregion)
 179 {
 180         switch (section) {
 181         case 0:
 182                 oobregion->offset = 8;
 183                 oobregion->length = 3;
 184                 return 0;
 185         case 1:
 186                 oobregion->offset = 13;
 187                 oobregion->length = 3;
 188                 return 0;
 189         default:
 190                 return -ERANGE;
 191         }
 192 }
 193
 194 static int rbsxtlite_ooblayout_free(struct mtd_info *mtd, int section,
 195                                     struct mtd_oob_region *oobregion)
 196 {
 197         switch (section) {
 198         case 0:
 199                 oobregion->offset = 0;
 200                 oobregion->length = 4;
 201                 return 0;
 202         case 1:
 203                 oobregion->offset = 4;
 204                 oobregion->length = 1;
 205                 return 0;
 206         case 2:
 207                 oobregion->offset = 6;
 208                 oobregion->length = 2;
 209                 return 0;
 210         case 3:
 211                 oobregion->offset = 11;
 212                 oobregion->length = 2;
 213                 return 0;
 214         default:
 215                 return -ERANGE;
 216         }
 217 }
 218
 219 static const struct mtd_ooblayout_ops rbsxtlite_nand_ecclayout_ops = {
 220         .ecc = rbsxtlite_ooblayout_ecc,
 221         .free = rbsxtlite_ooblayout_free,
 222 };
 223 #endif /* < 4.6 */
 224
 225 static int rbsxtlite_nand_scan_fixup(struct mtd_info *mtd)
 226 {
 227 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 228         struct nand_chip *chip = mtd->priv;
 229 #endif
 230
 231         if (mtd->writesize == 512) {
 232                 /*
 233                 * Use the OLD Yaffs-1 OOB layout, otherwise RouterBoot
 234                 * will not be able to find the kernel that we load.
 235                 */
 236 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 237                 chip->ecc.layout = &rbsxtlite_nand_ecclayout;
 238 #else
 239                 mtd_set_ooblayout(mtd, &rbsxtlite_nand_ecclayout_ops);
 240 #endif
 241         }
 242
 243         return 0;
 244 }
 245
 246 void __init rbsxtlite_gpio_init(void)
 247 {
 248         gpio_request_one(SXTLITE_GPIO_NAND_NCE, GPIOF_OUT_INIT_HIGH, "NAND nCE");
 249 }
 250
 251 void __init rbsxtlite_nand_init(void)
 252 {
 253         ath79_nfc_set_scan_fixup(rbsxtlite_nand_scan_fixup);
 254         ath79_nfc_set_parts(rbsxtlite_nand_partitions,
 255                            ARRAY_SIZE(rbsxtlite_nand_partitions));
 256         ath79_nfc_set_select_chip(rbsxtlite_nand_select_chip);
 257         ath79_nfc_set_swap_dma(true);
 258         ath79_register_nfc();
 259 }
 260
 261
 262 static void __init rbsxtlite_setup(void)
 263 {
 264         if(rbsxtlite_rbinfo_init())
 265                 return;
 266         rbsxtlite_nand_init();
 267         rbsxtlite_wlan_init();
 268
 269         ath79_register_leds_gpio(-1, ARRAY_SIZE(rbsxtlite_leds_gpio),
 270                                  rbsxtlite_leds_gpio);
 271         ath79_register_gpio_keys_polled(-1, SXTLITE_KEYS_POLL_INTERVAL,
 272                                         ARRAY_SIZE(rbsxtlite_gpio_keys),
 273                                         rbsxtlite_gpio_keys);
 274
 275         ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_SW_ONLY_MODE);
 276
 277         ath79_register_mdio(1, 0x0);
 278
 279         /* GMAC0 is left unused */
 280
 281         /* GMAC1 is connected to MAC0 on the internal switch */
 282         /* The ethernet port connects to PHY P0, which connects to MAC1
 283            on the internal switch */
 284         ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 0);
 285         ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
 286         ath79_register_eth(1);
 287
 288
 289 }
 290
 291
 292 MIPS_MACHINE(ATH79_MACH_RB_SXTLITE2ND, "sxt2n", "MikroTik RouterBOARD SXT Lite2",
 293             rbsxtlite_setup);
 294
 295 MIPS_MACHINE(ATH79_MACH_RB_SXTLITE5ND, "sxt5n", "MikroTik RouterBOARD SXT Lite5",
 296             rbsxtlite_setup);
 297