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openwrtv4/target/linux/ar71xx/files/arch/mips/ath79/mach-fritz4020.c
David Bauer b6a4c67468 ar71xx: add support for Fritz!Box 4020 
This commit adds support for the AVM Fritz!Box 4020 WiFi-router.

SoC:   Qualcomm Atheros QCA9561 (Dragonfly) 750MHz
RAM:   Winbond W971GG6KB-25
FLASH: Macronix MX25L12835F
WiFi:  QCA9561 b/g/n 3x3 450Mbit/s
USB:   1x USB 2.0
IN:    WPS button, WiFi button
OUT:   Power LED green, Internet LED green, WLAN LED green,
       LAN LED green, INFO LED green, INFO LED red
UART:  Header Next to Black metal shield
       Pinout is 3.3V - RX - TX - GND (Square Pad is 3.3V)
       The Serial setting is 115200-8-N-1.

Tested and working:
 - Ethernet (LAN + WAN)
 - WiFi (correct MAC)
 - Installation via EVA bootloader
 - OpenWRT sysupgrade
 - Buttons
 - LEDs

Not working:
 - USB port

Installation via EVA:
In the first seconds after Power is connected, the bootloader will
listen for FTP connections on 169.254.157.1 (Might also be 192.168.178.1). Firmware can be uploaded
like following:

  ftp> quote USER adam2
  ftp> quote PASS adam2
  ftp> binary
  ftp> debug
  ftp> passive
  ftp> quote MEDIA FLSH
  ftp> put openwrt-sysupgrade.bin mtd1

Note that this procedure might take up to two minutes. After transfer is
complete you need to powercycle the device to boot OpenWRT.

Signed-off-by: David Bauer <mail@david-bauer.net>
2018-05-07 10:42:26 +02:00

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/*
* AVM FRITZ!Box 4020 board support
*
* Copyright (C) 2018 David Bauer <mail@david-bauer.net>
*
* 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/init.h>
#include <linux/ath9k_platform.h>
#include <linux/etherdevice.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/platform_data/mdio-gpio.h>
#include <linux/spi/spi_gpio.h>
#include <linux/spi/74x164.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
#include "dev-eth.h"
#include "dev-gpio-buttons.h"
#include "dev-leds-gpio.h"
#include "dev-m25p80.h"
#include "dev-spi.h"
#include "dev-usb.h"
#include "dev-wmac.h"
#include "machtypes.h"
#define FRITZ4020_GPIO_SHIFT_SER 19 /* DS, Data Serial Input */
#define FRITZ4020_GPIO_SHIFT_SRCLK 20 /* SHCP, Shift Reg Clock Input */
#define FRITZ4020_SSR_BIT_0 0
#define FRITZ4020_SSR_BIT_1 1
#define FRITZ4020_SSR_BIT_2 2
#define FRITZ4020_SSR_BIT_3 3
#define FRITZ4020_SSR_BIT_4 4
#define FRITZ4020_SSR_BIT_5 5
#define FRITZ4020_SSR_BIT_6 6
#define FRITZ4020_SSR_BIT_7 7
#define FRITZ4020_74HC_GPIO_BASE 32
#define FRITZ4020_74HC_GPIO_LED_LAN (FRITZ4020_74HC_GPIO_BASE + 0)
#define FRITZ4020_74HC_GPIO_LED_INFO_RED (FRITZ4020_74HC_GPIO_BASE + 1)
#define FRITZ4020_74HC_GPIO_LED_POWER (FRITZ4020_74HC_GPIO_BASE + 2)
#define FRITZ4020_74HC_GPIO_LED_WLAN (FRITZ4020_74HC_GPIO_BASE + 3)
#define FRITZ4020_74HC_GPIO_LED_WAN (FRITZ4020_74HC_GPIO_BASE + 4)
#define FRITZ4020_74HC_GPIO_USB_RST (FRITZ4020_74HC_GPIO_BASE + 5)
#define FRITZ4020_74HC_GPIO_LED_INFO (FRITZ4020_74HC_GPIO_BASE + 6)
#define FRITZ4020_GPIO_BTN_WPS 2
#define FRITZ4020_GPIO_BTN_WLAN 21
#define FRITZ4020_KEYS_POLL_INTERVAL 20 /* msecs */
#define FRITZ4020_KEYS_DEBOUNCE_INTERVAL (3 * FRITZ4020_KEYS_POLL_INTERVAL)
#define FRTIZ4020_OFFSET_URLADER_WIFI_MAC_REVERSE 0x1979
static struct spi_gpio_platform_data fritz4020_spi_data = {
.sck = FRITZ4020_GPIO_SHIFT_SRCLK,
.miso = SPI_GPIO_NO_MISO,
.mosi = FRITZ4020_GPIO_SHIFT_SER,
.num_chipselect = 1,
};
static u8 fritz4020_ssr_initdata[] = {
BIT(FRITZ4020_SSR_BIT_7) |
BIT(FRITZ4020_SSR_BIT_6) |
BIT(FRITZ4020_SSR_BIT_5) |
BIT(FRITZ4020_SSR_BIT_4) |
BIT(FRITZ4020_SSR_BIT_3) |
BIT(FRITZ4020_SSR_BIT_2) |
BIT(FRITZ4020_SSR_BIT_1)
};
static struct gen_74x164_chip_platform_data fritz4020_ssr_data = {
.base = FRITZ4020_74HC_GPIO_BASE,
.num_registers = ARRAY_SIZE(fritz4020_ssr_initdata),
.init_data = fritz4020_ssr_initdata,
};
static struct platform_device fritz4020_spi_device = {
.name = "spi_gpio",
.id = 1,
.dev = {
.platform_data = &fritz4020_spi_data,
},
};
static struct spi_board_info fritz4020_spi_info[] = {
{
.bus_num = 1,
.chip_select = 0,
.max_speed_hz = 10000000,
.modalias = "74x164",
.platform_data = &fritz4020_ssr_data,
.controller_data = (void *) 0x0,
},
};
static struct mtd_partition fritz4020_flash_partitions[] = {
{
.name = "urlader",
.offset = 0,
.size = 0x0020000,
.mask_flags = MTD_WRITEABLE,
}, {
.name = "firmware",
.offset = 0x0020000,
.size = 0x0EE0000,
}, {
.name = "tffs (1)",
.offset = 0x0f00000,
.size = 0x0080000,
.mask_flags = MTD_WRITEABLE,
}, {
.name = "tffs (2)",
.offset = 0x0f80000,
.size = 0x0080000,
.mask_flags = MTD_WRITEABLE,
}
};
static struct flash_platform_data fritz4020_flash_data = {
.parts = fritz4020_flash_partitions,
.nr_parts = ARRAY_SIZE(fritz4020_flash_partitions),
};
static struct gpio_led fritz4020_leds_gpio[] __initdata = {
{
.name = "fritz4020:green:lan",
.gpio = FRITZ4020_74HC_GPIO_LED_LAN,
.active_low = 1,
}, {
.name = "fritz4020:green:info",
.gpio = FRITZ4020_74HC_GPIO_LED_INFO,
.active_low = 1,
}, {
.name = "fritz4020:red:info",
.gpio = FRITZ4020_74HC_GPIO_LED_INFO_RED,
.active_low = 1,
}, {
.name = "fritz4020:green:power",
.gpio = FRITZ4020_74HC_GPIO_LED_POWER,
.active_low = 1,
}, {
.name = "fritz4020:green:wlan",
.gpio = FRITZ4020_74HC_GPIO_LED_WLAN,
.active_low = 1,
}, {
.name = "fritz4020:green:wan",
.gpio = FRITZ4020_74HC_GPIO_LED_WAN,
.active_low = 1,
},
};
static struct gpio_keys_button fritz4020_gpio_keys[] __initdata = {
{
.desc = "RFKILL button",
.type = EV_KEY,
.code = KEY_RFKILL,
.debounce_interval = FRITZ4020_KEYS_DEBOUNCE_INTERVAL,
.gpio = FRITZ4020_GPIO_BTN_WLAN,
.active_low = 0,
},
{
.desc = "WPS button",
.type = EV_KEY,
.code = KEY_WPS_BUTTON,
.debounce_interval = FRITZ4020_KEYS_DEBOUNCE_INTERVAL,
.gpio = FRITZ4020_GPIO_BTN_WPS,
.active_low = 0,
},
};
static void __init fritz4020_setup(void) {
u8 *urlader = (u8 *) KSEG1ADDR(0x1f000000);
u8 wifi_mac[ETH_ALEN];
ath79_register_m25p80(&fritz4020_flash_data);
/* Initialize ethernet */
ath79_extract_mac_reverse(urlader + FRTIZ4020_OFFSET_URLADER_WIFI_MAC_REVERSE, wifi_mac);
ath79_setup_qca956x_eth_cfg(QCA956X_ETH_CFG_SW_PHY_SWAP |
QCA956X_ETH_CFG_SW_PHY_ADDR_SWAP);
ath79_register_mdio(0, 0x0);
ath79_register_mdio(1, 0x0);
ath79_init_mac(ath79_eth0_data.mac_addr, wifi_mac, -1);
ath79_init_mac(ath79_eth1_data.mac_addr, wifi_mac, -2);
/* WAN port */
ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
ath79_eth0_data.speed = SPEED_100;
ath79_eth0_data.duplex = DUPLEX_FULL;
ath79_eth0_data.phy_mask = BIT(0);
ath79_register_eth(0);
/* LAN ports */
ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
ath79_eth1_data.speed = SPEED_1000;
ath79_eth1_data.duplex = DUPLEX_FULL;
ath79_switch_data.phy_poll_mask |= BIT(0);
ath79_switch_data.phy4_mii_en = 1;
ath79_register_eth(1);
/* Initialize 2.4GHz WiFi */
ath79_register_wmac_simple();
/* Activate USB Power */
gpio_request_one(FRITZ4020_74HC_GPIO_USB_RST,
GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
"USB power");
/* Initialize USB port */
ath79_register_usb();
/* Register LED shift-register */
spi_register_board_info(fritz4020_spi_info,
ARRAY_SIZE(fritz4020_spi_info));
platform_device_register(&fritz4020_spi_device);
/* Register GPIO buttons */
ath79_register_gpio_keys_polled(-1, FRITZ4020_KEYS_POLL_INTERVAL,
ARRAY_SIZE(fritz4020_gpio_keys),
fritz4020_gpio_keys);
/* Register LEDs */
ath79_register_leds_gpio(-1, ARRAY_SIZE(fritz4020_leds_gpio),
fritz4020_leds_gpio);
}
MIPS_MACHINE(ATH79_MACH_FRITZ4020, "FRITZ4020",
"AVM FRITZ!Box 4020", fritz4020_setup);
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