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/version.h>
  16 #include <linux/phy.h>
  17 #include <linux/delay.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/ath9k_platform.h>
  20 #include <linux/mtd/mtd.h>
  21 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
  22 #include <linux/mtd/nand.h>
  23 #else
  24 #include <linux/mtd/rawnand.h>
  25 #endif
  26 #include <linux/mtd/partitions.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/spi/flash.h>
  29 #include <linux/rle.h>
  30 #include <linux/routerboot.h>
  31 #include <linux/gpio.h>
  32 #include <linux/version.h>
  33
  34 #include <asm/mach-ath79/ath79.h>
  35 #include <asm/mach-ath79/ar71xx_regs.h>
  36 #include "common.h"
  37 #include "dev-ap9x-pci.h"
  38 #include "dev-gpio-buttons.h"
  39 #include "dev-leds-gpio.h"
  40 #include "dev-eth.h"
  41 #include "dev-m25p80.h"
  42 #include "dev-nfc.h"
  43 #include "dev-wmac.h"
  44 #include "dev-usb.h"
  45 #include "machtypes.h"
  46 #include "routerboot.h"
  47 #include <linux/ar8216_platform.h>
  48
  49 #define SXTLITE_GPIO_NAND_NCE  14
  50 #define SXTLITE_GPIO_LED_USER 3
  51 #define SXTLITE_GPIO_LED_1 13
  52 #define SXTLITE_GPIO_LED_2 12
  53 #define SXTLITE_GPIO_LED_3 4
  54 #define SXTLITE_GPIO_LED_4 21
  55 #define SXTLITE_GPIO_LED_5 18
  56 #define SXTLITE_GPIO_LED_POWER 11
  57
  58 #define SXTLITE_GPIO_BUZZER 19
  59
  60 #define SXTLITE_GPIO_BTN_RESET 15
  61
  62 #define SXTLITE_KEYS_POLL_INTERVAL 20
  63 #define SXTLITE_KEYS_DEBOUNCE_INTERVAL (3 * SXTLITE_KEYS_POLL_INTERVAL)
  64
  65 static struct mtd_partition rbsxtlite_nand_partitions[] = {
  66         {
  67                 .name   = "booter",
  68                 .offset = 0,
  69                 .size   = (256 * 1024),
  70                 .mask_flags = MTD_WRITEABLE,
  71         },
  72         {
  73                 .name   = "kernel",
  74                 .offset = (256 * 1024),
  75                 .size   = (4 * 1024 * 1024) - (256 * 1024),
  76         },
  77         {
  78                 .name   = "ubi",
  79                 .offset = MTDPART_OFS_NXTBLK,
  80                 .size   = MTDPART_SIZ_FULL,
  81         },
  82 };
  83
  84 static struct gpio_led rbsxtlite_leds_gpio[] __initdata = {
  85         {
  86                 .name           =       "rb:green:user",
  87                 .gpio           =       SXTLITE_GPIO_LED_USER,
  88                 .active_low     =       1,
  89         },
  90         {
  91                 .name           =       "rb:green:led1",
  92                 .gpio           =       SXTLITE_GPIO_LED_1,
  93                 .active_low     =       1,
  94         },
  95         {
  96                 .name           =       "rb:green:led2",
  97                 .gpio           =       SXTLITE_GPIO_LED_2,
  98                 .active_low     =       1,
  99         },
 100         {
 101                 .name           =       "rb:green:led3",
 102                 .gpio           =       SXTLITE_GPIO_LED_3,
 103                 .active_low     =       1,
 104         },
 105         {
 106                 .name           =       "rb:green:led4",
 107                 .gpio           =       SXTLITE_GPIO_LED_4,
 108                 .active_low     =       1,
 109         },
 110         {
 111                 .name           =       "rb:green:led5",
 112                 .gpio           =       SXTLITE_GPIO_LED_5,
 113                 .active_low     =       1,
 114         },
 115         {
 116                 .name           =       "rb:green:power",
 117                 .gpio           =       SXTLITE_GPIO_LED_POWER,
 118                 .default_state  =       LEDS_GPIO_DEFSTATE_ON,
 119         },
 120 };
 121
 122 static struct gpio_keys_button rbsxtlite_gpio_keys[] __initdata = {
 123         {
 124                 .desc           =       "Reset button",
 125                 .type           =       EV_KEY,
 126                 .code           =       KEY_RESTART,
 127                 .debounce_interval      =       SXTLITE_KEYS_DEBOUNCE_INTERVAL,
 128                 .gpio           =       SXTLITE_GPIO_BTN_RESET,
 129                 .active_low     =       0,
 130         },
 131 };
 132
 133 static int __init rbsxtlite_rbinfo_init(void)
 134 {
 135         const struct rb_info *info;
 136
 137         info = rb_init_info((void *)(KSEG1ADDR(AR71XX_SPI_BASE)), 0x10000);
 138         if (!info)
 139                 return -EINVAL;
 140         return 0;
 141
 142 }
 143
 144 void __init rbsxtlite_wlan_init(void)
 145 {
 146         char *art_buf;
 147         u8 wlan_mac[ETH_ALEN];
 148
 149         art_buf = rb_get_wlan_data();
 150         if (art_buf == NULL)
 151                 return;
 152
 153         ath79_init_mac(wlan_mac, ath79_mac_base, 1);
 154         ath79_register_wmac(art_buf + 0x1000, wlan_mac);
 155
 156         kfree(art_buf);
 157 }
 158
 159 static void rbsxtlite_nand_select_chip(int chip_no)
 160 {
 161         switch (chip_no) {
 162         case 0:
 163                 gpio_set_value(SXTLITE_GPIO_NAND_NCE, 0);
 164                 break;
 165         default:
 166                 gpio_set_value(SXTLITE_GPIO_NAND_NCE, 1);
 167                 break;
 168         }
 169         ndelay(500);
 170 }
 171
 172 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 173 static struct nand_ecclayout rbsxtlite_nand_ecclayout = {
 174         .eccbytes       = 6,
 175         .eccpos  = { 8, 9, 10, 13, 14, 15 },
 176         .oobavail       = 9,
 177         .oobfree        = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
 178 };
 179
 180 #else
 181
 182 static int rbsxtlite_ooblayout_ecc(struct mtd_info *mtd, int section,
 183                                    struct mtd_oob_region *oobregion)
 184 {
 185         switch (section) {
 186         case 0:
 187                 oobregion->offset = 8;
 188                 oobregion->length = 3;
 189                 return 0;
 190         case 1:
 191                 oobregion->offset = 13;
 192                 oobregion->length = 3;
 193                 return 0;
 194         default:
 195                 return -ERANGE;
 196         }
 197 }
 198
 199 static int rbsxtlite_ooblayout_free(struct mtd_info *mtd, int section,
 200                                     struct mtd_oob_region *oobregion)
 201 {
 202         switch (section) {
 203         case 0:
 204                 oobregion->offset = 0;
 205                 oobregion->length = 4;
 206                 return 0;
 207         case 1:
 208                 oobregion->offset = 4;
 209                 oobregion->length = 1;
 210                 return 0;
 211         case 2:
 212                 oobregion->offset = 6;
 213                 oobregion->length = 2;
 214                 return 0;
 215         case 3:
 216                 oobregion->offset = 11;
 217                 oobregion->length = 2;
 218                 return 0;
 219         default:
 220                 return -ERANGE;
 221         }
 222 }
 223
 224 static const struct mtd_ooblayout_ops rbsxtlite_nand_ecclayout_ops = {
 225         .ecc = rbsxtlite_ooblayout_ecc,
 226         .free = rbsxtlite_ooblayout_free,
 227 };
 228 #endif /* < 4.6 */
 229
 230 static int rbsxtlite_nand_scan_fixup(struct mtd_info *mtd)
 231 {
 232 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 233         struct nand_chip *chip = mtd->priv;
 234 #endif
 235
 236         if (mtd->writesize == 512) {
 237                 /*
 238                 * Use the OLD Yaffs-1 OOB layout, otherwise RouterBoot
 239                 * will not be able to find the kernel that we load.
 240                 */
 241 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
 242                 chip->ecc.layout = &rbsxtlite_nand_ecclayout;
 243 #else
 244                 mtd_set_ooblayout(mtd, &rbsxtlite_nand_ecclayout_ops);
 245 #endif
 246         }
 247
 248         return 0;
 249 }
 250
 251 void __init rbsxtlite_gpio_init(void)
 252 {
 253         gpio_request_one(SXTLITE_GPIO_NAND_NCE, GPIOF_OUT_INIT_HIGH, "NAND nCE");
 254 }
 255
 256 void __init rbsxtlite_nand_init(void)
 257 {
 258         ath79_nfc_set_scan_fixup(rbsxtlite_nand_scan_fixup);
 259         ath79_nfc_set_parts(rbsxtlite_nand_partitions,
 260                            ARRAY_SIZE(rbsxtlite_nand_partitions));
 261         ath79_nfc_set_select_chip(rbsxtlite_nand_select_chip);
 262         ath79_nfc_set_swap_dma(true);
 263         ath79_register_nfc();
 264 }
 265
 266
 267 static void __init rbsxtlite_setup(void)
 268 {
 269         if(rbsxtlite_rbinfo_init())
 270                 return;
 271         rbsxtlite_nand_init();
 272         rbsxtlite_wlan_init();
 273
 274         ath79_register_leds_gpio(-1, ARRAY_SIZE(rbsxtlite_leds_gpio),
 275                                  rbsxtlite_leds_gpio);
 276         ath79_register_gpio_keys_polled(-1, SXTLITE_KEYS_POLL_INTERVAL,
 277                                         ARRAY_SIZE(rbsxtlite_gpio_keys),
 278                                         rbsxtlite_gpio_keys);
 279
 280         ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_SW_ONLY_MODE);
 281
 282         ath79_register_mdio(1, 0x0);
 283
 284         /* GMAC0 is left unused */
 285
 286         /* GMAC1 is connected to MAC0 on the internal switch */
 287         /* The ethernet port connects to PHY P0, which connects to MAC1
 288            on the internal switch */
 289         ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 0);
 290         ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
 291         ath79_register_eth(1);
 292
 293
 294 }
 295
 296
 297 MIPS_MACHINE(ATH79_MACH_RB_SXTLITE2ND, "sxt2n", "MikroTik RouterBOARD SXT Lite2",
 298             rbsxtlite_setup);
 299
 300 MIPS_MACHINE(ATH79_MACH_RB_SXTLITE5ND, "sxt5n", "MikroTik RouterBOARD SXT Lite5",
 301             rbsxtlite_setup);
 302