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/*
* MikroTik RouterBOARD 91X support
*
* Copyright (C) 2015 Gabor Juhos <juhosg@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/phy.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/ath9k_platform.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/routerboot.h>
#include <linux/gpio.h>
#include <linux/platform_data/phy-at803x.h>
#include <linux/version.h>
#include <asm/prom.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
#include "dev-gpio-buttons.h"
#include "dev-eth.h"
#include "dev-leds-gpio.h"
#include "dev-m25p80.h"
#include "dev-nfc.h"
#include "dev-usb.h"
#include "dev-spi.h"
#include "machtypes.h"
#include "pci.h"
#include "routerboot.h"
#define RB922_GPIO_LED_USR 12
#define RB922_GPIO_USB_POWER 13
#define RB922_GPIO_FAN_CTRL 14
#define RB922_GPIO_BTN_RESET 20
#define RB922_GPIO_NAND_NCE 23
#define RB922_PHY_ADDR 4
#define RB922_KEYS_POLL_INTERVAL 20 /* msecs */
#define RB922_KEYS_DEBOUNCE_INTERVAL (3 * RB922_KEYS_POLL_INTERVAL)
#define RB_ROUTERBOOT_OFFSET 0x0000
#define RB_ROUTERBOOT_MIN_SIZE 0xb000
#define RB_HARD_CFG_SIZE 0x1000
#define RB_BIOS_OFFSET 0xd000
#define RB_BIOS_SIZE 0x1000
#define RB_SOFT_CFG_OFFSET 0xf000
#define RB_SOFT_CFG_SIZE 0x1000
static struct mtd_partition rb922gs_spi_partitions[] = {
{
.name = "routerboot",
.offset = RB_ROUTERBOOT_OFFSET,
.mask_flags = MTD_WRITEABLE,
}, {
.name = "hard_config",
.size = RB_HARD_CFG_SIZE,
.mask_flags = MTD_WRITEABLE,
}, {
.name = "bios",
.offset = RB_BIOS_OFFSET,
.size = RB_BIOS_SIZE,
.mask_flags = MTD_WRITEABLE,
}, {
.name = "soft_config",
.size = RB_SOFT_CFG_SIZE,
}
};
static struct flash_platform_data rb922gs_spi_flash_data = {
.parts = rb922gs_spi_partitions,
.nr_parts = ARRAY_SIZE(rb922gs_spi_partitions),
};
static struct gpio_led rb922gs_leds[] __initdata = {
{
.name = "rb:green:user",
.gpio = RB922_GPIO_LED_USR,
.active_low = 1,
},
};
static struct gpio_keys_button rb922gs_gpio_keys[] __initdata = {
{
.desc = "Reset button",
.type = EV_KEY,
.code = KEY_RESTART,
.debounce_interval = RB922_KEYS_DEBOUNCE_INTERVAL,
.gpio = RB922_GPIO_BTN_RESET,
.active_low = 1,
},
};
static struct at803x_platform_data rb922gs_at803x_data = {
.disable_smarteee = 1,
};
static struct mdio_board_info rb922gs_mdio0_info[] = {
{
.bus_id = "ag71xx-mdio.0",
.phy_addr = RB922_PHY_ADDR,
.platform_data = &rb922gs_at803x_data,
},
};
static void __init rb922gs_init_partitions(const struct rb_info *info)
{
rb922gs_spi_partitions[0].size = info->hard_cfg_offs;
rb922gs_spi_partitions[1].offset = info->hard_cfg_offs;
rb922gs_spi_partitions[3].offset = info->soft_cfg_offs;
}
static void rb922gs_nand_select_chip(int chip_no)
{
switch (chip_no) {
case 0:
gpio_set_value(RB922_GPIO_NAND_NCE, 0);
break;
default:
gpio_set_value(RB922_GPIO_NAND_NCE, 1);
break;
}
ndelay(500);
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
static struct nand_ecclayout rb922gs_nand_ecclayout = {
.eccbytes = 6,
.eccpos = { 8, 9, 10, 13, 14, 15 },
.oobavail = 9,
.oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
};
#else
static int rb922gs_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *oobregion)
{
switch (section) {
case 0:
oobregion->offset = 8;
oobregion->length = 3;
return 0;
case 1:
oobregion->offset = 13;
oobregion->length = 3;
return 0;
default:
return -ERANGE;
}
}
static int rb922gs_ooblayout_free(struct mtd_info *mtd, int section,
struct mtd_oob_region *oobregion)
{
switch (section) {
case 0:
oobregion->offset = 0;
oobregion->length = 4;
return 0;
case 1:
oobregion->offset = 4;
oobregion->length = 1;
return 0;
case 2:
oobregion->offset = 6;
oobregion->length = 2;
return 0;
case 3:
oobregion->offset = 11;
oobregion->length = 2;
return 0;
default:
return -ERANGE;
}
}
static const struct mtd_ooblayout_ops rb922gs_nand_ecclayout_ops = {
.ecc = rb922gs_ooblayout_ecc,
.free = rb922gs_ooblayout_free,
};
#endif /* < 4.6 */
static int rb922gs_nand_scan_fixup(struct mtd_info *mtd)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
struct nand_chip *chip = mtd->priv;
#else
struct nand_chip *chip = mtd_to_nand(mtd);
#endif /* < 4.6.0 */
if (mtd->writesize == 512) {
/*
* Use the OLD Yaffs-1 OOB layout, otherwise RouterBoot
* will not be able to find the kernel that we load.
*/
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,6,0)
chip->ecc.layout = &rb922gs_nand_ecclayout;
#else
mtd_set_ooblayout(mtd, &rb922gs_nand_ecclayout_ops);
#endif
}
chip->options = NAND_NO_SUBPAGE_WRITE;
return 0;
}
static struct mtd_partition rb922gs_nand_partitions[] = {
{
.name = "booter",
.offset = 0,
.size = (256 * 1024),
.mask_flags = MTD_WRITEABLE,
},
{
.name = "kernel",
.offset = (256 * 1024),
.size = (4 * 1024 * 1024) - (256 * 1024),
},
{
.name = "ubi",
.offset = MTDPART_OFS_NXTBLK,
.size = MTDPART_SIZ_FULL,
},
};
static void __init rb922gs_nand_init(void)
{
gpio_request_one(RB922_GPIO_NAND_NCE, GPIOF_OUT_INIT_HIGH, "NAND nCE");
ath79_nfc_set_scan_fixup(rb922gs_nand_scan_fixup);
ath79_nfc_set_parts(rb922gs_nand_partitions,
ARRAY_SIZE(rb922gs_nand_partitions));
ath79_nfc_set_select_chip(rb922gs_nand_select_chip);
ath79_nfc_set_swap_dma(true);
ath79_register_nfc();
}
static void __init rb922gs_setup(void)
{
const struct rb_info *info;
char buf[64];
info = rb_init_info((void *) KSEG1ADDR(0x1f000000), 0x10000);
if (!info)
return;
scnprintf(buf, sizeof(buf), "MikroTik RouterBOARD %s",
(info->board_name) ? info->board_name : "");
mips_set_machine_name(buf);
rb922gs_init_partitions(info);
ath79_register_m25p80(&rb922gs_spi_flash_data);
rb922gs_nand_init();
ath79_setup_qca955x_eth_cfg(QCA955X_ETH_CFG_RGMII_EN);
ath79_register_mdio(0, 0x0);
mdiobus_register_board_info(rb922gs_mdio0_info,
ARRAY_SIZE(rb922gs_mdio0_info));
ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
ath79_eth0_data.phy_mask = BIT(RB922_PHY_ADDR);
if (strcmp(info->board_name, "921GS-5HPacD r2") == 0) {
ath79_eth0_pll_data.pll_10 = 0xa0001313;
ath79_eth0_pll_data.pll_100 = 0xa0000101;
ath79_eth0_pll_data.pll_1000 = 0x8f000000;
}
else {
ath79_eth0_pll_data.pll_10 = 0x81001313;
ath79_eth0_pll_data.pll_100 = 0x81000101;
ath79_eth0_pll_data.pll_1000 = 0x8f000000;
}
ath79_register_eth(0);
ath79_register_pci();
ath79_register_leds_gpio(-1, ARRAY_SIZE(rb922gs_leds), rb922gs_leds);
ath79_register_gpio_keys_polled(-1, RB922_KEYS_POLL_INTERVAL,
ARRAY_SIZE(rb922gs_gpio_keys),
rb922gs_gpio_keys);
/* NOTE:
* This only supports the RB911G-5HPacD board for now. For other boards
* more devices must be registered based on the hardware options which
* can be found in the hardware configuration of RouterBOOT.
*/
}
MIPS_MACHINE_NONAME(ATH79_MACH_RB_922GS, "922gs", rb922gs_setup);
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