OpenWrt – Rev 4
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/*
* TP-Link TL-WR942N(RU) v1 board support
*
* Copyright (C) 2017 Sergey Studzinski <serguzhg@gmail.com>
* Thanks to Henryk Heisig <hyniu@o2.pl>
*
* 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/platform_device.h>
#include <linux/ath9k_platform.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/spi/spi_gpio.h>
#include <linux/spi/74x164.h>
#include "common.h"
#include "dev-m25p80.h"
#include "machtypes.h"
#include "dev-eth.h"
#include "dev-gpio-buttons.h"
#include "dev-leds-gpio.h"
#include "dev-spi.h"
#include "dev-usb.h"
#include "dev-wmac.h"
#include "nvram.h"
#define TL_WR942N_V1_KEYS_POLL_INTERVAL 20
#define TL_WR942N_V1_KEYS_DEBOUNCE_INTERVAL \
(3 * TL_WR942N_V1_KEYS_POLL_INTERVAL)
#define TL_WR942N_V1_GPIO_BTN_RESET 1
#define TL_WR942N_V1_GPIO_BTN_RFKILL 2
#define TL_WR942N_V1_GPIO_UART_TX 4
#define TL_WR942N_V1_GPIO_UART_RX 5
#define TL_WR942N_V1_GPIO_LED_USB2 14
#define TL_WR942N_V1_GPIO_LED_USB1 15
#define TL_WR942N_V1_GPIO_SHIFT_OE 16
#define TL_WR942N_V1_GPIO_SHIFT_SER 17
#define TL_WR942N_V1_GPIO_SHIFT_SRCLK 18
#define TL_WR942N_V1_GPIO_SHIFT_SRCLR 19
#define TL_WR942N_V1_GPIO_SHIFT_RCLK 20
#define TL_WR942N_V1_GPIO_LED_WPS 21
#define TL_WR942N_V1_GPIO_LED_STATUS 22
#define TL_WR942N_V1_74HC_GPIO_BASE 32
#define TL_WR942N_V1_74HC_GPIO_LED_LAN4 (TL_WR942N_V1_74HC_GPIO_BASE + 0)
#define TL_WR942N_V1_74HC_GPIO_LED_LAN3 (TL_WR942N_V1_74HC_GPIO_BASE + 1)
#define TL_WR942N_V1_74HC_GPIO_LED_LAN2 (TL_WR942N_V1_74HC_GPIO_BASE + 2)
#define TL_WR942N_V1_74HC_GPIO_LED_LAN1 (TL_WR942N_V1_74HC_GPIO_BASE + 3)
#define TL_WR942N_V1_74HC_GPIO_LED_WAN_GREEN (TL_WR942N_V1_74HC_GPIO_BASE + 4)
#define TL_WR942N_V1_74HC_GPIO_LED_WAN_AMBER (TL_WR942N_V1_74HC_GPIO_BASE + 5)
#define TL_WR942N_V1_74HC_GPIO_LED_WLAN (TL_WR942N_V1_74HC_GPIO_BASE + 6)
#define TL_WR942N_V1_74HC_GPIO_HUB_RESET (TL_WR942N_V1_74HC_GPIO_BASE + 7) /* from u-boot sources */
#define TL_WR942N_V1_SSR_BIT_0 0
#define TL_WR942N_V1_SSR_BIT_1 1
#define TL_WR942N_V1_SSR_BIT_2 2
#define TL_WR942N_V1_SSR_BIT_3 3
#define TL_WR942N_V1_SSR_BIT_4 4
#define TL_WR942N_V1_SSR_BIT_5 5
#define TL_WR942N_V1_SSR_BIT_6 6
#define TL_WR942N_V1_SSR_BIT_7 7
#define TL_WR942N_V1_WMAC_CALDATA_OFFSET 0x1000
#define TL_WR942N_V1_DEFAULT_MAC_ADDR 0x1fe40008
#define TL_WR942N_V1_DEFAULT_MAC_SIZE 0x200
#define GPIO_IN_ENABLE0_UART_SIN_LSB 8
#define GPIO_IN_ENABLE0_UART_SIN_MASK 0x0000ff00
static struct gpio_led tl_wr942n_v1_leds_gpio[] __initdata = {
{
.name = "tl-wr942n-v1:green:status",
.gpio = TL_WR942N_V1_GPIO_LED_STATUS,
.active_low = 1,
}, {
.name = "tl-wr942n-v1:green:wlan",
.gpio = TL_WR942N_V1_74HC_GPIO_LED_WLAN,
.active_low = 1,
}, {
.name = "tl-wr942n-v1:green:lan1",
.gpio = TL_WR942N_V1_74HC_GPIO_LED_LAN1,
.active_low = 1,
}, {
.name = "tl-wr942n-v1:green:lan2",
.gpio = TL_WR942N_V1_74HC_GPIO_LED_LAN2,
.active_low = 1,
}, {
.name = "tl-wr942n-v1:green:lan3",
.gpio = TL_WR942N_V1_74HC_GPIO_LED_LAN3,
.active_low = 1,
}, {
.name = "tl-wr942n-v1:green:lan4",
.gpio = TL_WR942N_V1_74HC_GPIO_LED_LAN4,
.active_low = 1,
}, {
.name = "tl-wr942n-v1:green:wan",
.gpio = TL_WR942N_V1_74HC_GPIO_LED_WAN_GREEN,
.active_low = 1,
}, {
.name = "tl-wr942n-v1:amber:wan",
.gpio = TL_WR942N_V1_74HC_GPIO_LED_WAN_AMBER,
.active_low = 1,
}, {
.name = "tl-wr942n-v1:green:wps",
.gpio = TL_WR942N_V1_GPIO_LED_WPS,
.active_low = 1,
}, {
.name = "tl-wr942n-v1:green:usb1",
.gpio = TL_WR942N_V1_GPIO_LED_USB1,
.active_low = 1,
}, {
.name = "tl-wr942n-v1:green:usb2",
.gpio = TL_WR942N_V1_GPIO_LED_USB2,
.active_low = 1,
},
};
static struct gpio_keys_button tl_wr942n_v1_gpio_keys[] __initdata = {
{
.desc = "Reset button",
.type = EV_KEY,
.code = KEY_RESTART,
.debounce_interval = TL_WR942N_V1_KEYS_DEBOUNCE_INTERVAL,
.gpio = TL_WR942N_V1_GPIO_BTN_RESET,
.active_low = 1,
}, {
.desc = "RFKILL button",
.type = EV_KEY,
.code = KEY_RFKILL,
.debounce_interval = TL_WR942N_V1_KEYS_DEBOUNCE_INTERVAL,
.gpio = TL_WR942N_V1_GPIO_BTN_RFKILL,
.active_low = 1,
},
};
static struct spi_gpio_platform_data tl_wr942n_v1_spi_data = {
.sck = TL_WR942N_V1_GPIO_SHIFT_SRCLK,
.miso = SPI_GPIO_NO_MISO,
.mosi = TL_WR942N_V1_GPIO_SHIFT_SER,
.num_chipselect = 1,
};
static u8 tl_wr942n_v1_ssr_initdata[] = {
BIT(TL_WR942N_V1_SSR_BIT_7) |
BIT(TL_WR942N_V1_SSR_BIT_6) |
BIT(TL_WR942N_V1_SSR_BIT_5) |
BIT(TL_WR942N_V1_SSR_BIT_4) |
BIT(TL_WR942N_V1_SSR_BIT_3) |
BIT(TL_WR942N_V1_SSR_BIT_2) |
BIT(TL_WR942N_V1_SSR_BIT_1) |
BIT(TL_WR942N_V1_SSR_BIT_0)
};
static struct gen_74x164_chip_platform_data tl_wr942n_v1_ssr_data = {
.base = TL_WR942N_V1_74HC_GPIO_BASE,
.num_registers = ARRAY_SIZE(tl_wr942n_v1_ssr_initdata),
.init_data = tl_wr942n_v1_ssr_initdata,
};
static struct platform_device tl_wr942n_v1_spi_device = {
.name = "spi_gpio",
.id = 1,
.dev = {
.platform_data = &tl_wr942n_v1_spi_data,
},
};
static struct spi_board_info tl_wr942n_v1_spi_info[] = {
{
.bus_num = 1,
.chip_select = 0,
.max_speed_hz = 10000000,
.modalias = "74x164",
.platform_data = &tl_wr942n_v1_ssr_data,
.controller_data = (void *) TL_WR942N_V1_GPIO_SHIFT_RCLK,
},
};
static void tl_wr942n_v1_get_mac(const char *name, char *mac)
{
u8 *nvram = (u8 *) KSEG1ADDR(TL_WR942N_V1_DEFAULT_MAC_ADDR);
int err;
err = ath79_nvram_parse_mac_addr(nvram, TL_WR942N_V1_DEFAULT_MAC_SIZE,
name, mac);
if (err)
pr_err("no MAC address found for %s\n", name);
}
static void __init tl_wr942n_v1_setup(void)
{
u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
u8 tmpmac[ETH_ALEN];
void __iomem *base;
u32 t;
ath79_register_m25p80(NULL);
spi_register_board_info(tl_wr942n_v1_spi_info,
ARRAY_SIZE(tl_wr942n_v1_spi_info));
platform_device_register(&tl_wr942n_v1_spi_device);
/* Check inherited UART RX GPIO definition */
base = ioremap(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE);
t = __raw_readl(base + QCA956X_GPIO_REG_IN_ENABLE0);
if (((t & GPIO_IN_ENABLE0_UART_SIN_MASK)
>> GPIO_IN_ENABLE0_UART_SIN_LSB) == TL_WR942N_V1_GPIO_LED_USB1) {
pr_warn("Active UART detected on USBLED's GPIOs!\n");
tl_wr942n_v1_leds_gpio[9].gpio = TL_WR942N_V1_GPIO_UART_TX;
tl_wr942n_v1_leds_gpio[10].gpio = TL_WR942N_V1_GPIO_UART_RX;
}
ath79_register_leds_gpio(-1, ARRAY_SIZE(tl_wr942n_v1_leds_gpio),
tl_wr942n_v1_leds_gpio);
ath79_register_gpio_keys_polled(-1, TL_WR942N_V1_KEYS_POLL_INTERVAL,
ARRAY_SIZE(tl_wr942n_v1_gpio_keys),
tl_wr942n_v1_gpio_keys);
tl_wr942n_v1_get_mac("MAC:", tmpmac);
/* swap PHYs */
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);
/* WAN port */
ath79_init_mac(ath79_eth0_data.mac_addr, tmpmac, 1);
ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
ath79_eth0_data.speed = SPEED_100;
ath79_eth0_data.duplex = DUPLEX_FULL;
/* swaped PHYs */
ath79_eth0_data.phy_mask = BIT(0);
ath79_register_eth(0);
/* LAN ports */
ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
ath79_init_mac(ath79_eth1_data.mac_addr, tmpmac, 0);
ath79_eth1_data.speed = SPEED_1000;
ath79_eth1_data.duplex = DUPLEX_FULL;
/* swaped PHYs */
ath79_switch_data.phy_poll_mask |= BIT(0);
ath79_switch_data.phy4_mii_en = 1;
ath79_register_eth(1);
ath79_register_wmac(art + TL_WR942N_V1_WMAC_CALDATA_OFFSET, tmpmac);
ath79_register_usb();
gpio_request_one(TL_WR942N_V1_74HC_GPIO_HUB_RESET,
GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
"USB power");
gpio_request_one(TL_WR942N_V1_GPIO_SHIFT_OE,
GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
"LED control");
gpio_request_one(TL_WR942N_V1_GPIO_SHIFT_SRCLR,
GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
"LED reset");
}
MIPS_MACHINE(ATH79_MACH_TL_WR942N_V1, "TL-WR942N-V1", "TP-LINK TL-WR942N v1",
tl_wr942n_v1_setup);