OpenWrt – Rev 4

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/*
 * GL.iNet GL-AR750 board support
 *
 * Copyright (C) 2018 Piotr Dymacz <pepe2k@gmail.com>
 *
 * 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/gpio.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/platform_device.h>

#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>

#include "common.h"
#include "dev-ap9x-pci.h"
#include "dev-eth.h"
#include "dev-gpio-buttons.h"
#include "dev-leds-gpio.h"
#include "dev-m25p80.h"
#include "dev-usb.h"
#include "dev-wmac.h"
#include "machtypes.h"

#define GL_AR750_GPIO_LED_POWER         12
#define GL_AR750_GPIO_LED_WLAN2G        14
#define GL_AR750_GPIO_LED_WLAN5G        13

#define GL_AR750_GPIO_BTN_RESET         3
#define GL_AR750_GPIO_BTN_SW1           0

#define GL_AR750_GPIO_I2C_SCL           16
#define GL_AR750_GPIO_I2C_SDA           17

#define GL_AR750_GPIO_USB_POWER         2

#define GL_AR750_KEYS_POLL_INTERVAL     20
#define GL_AR750_KEYS_DEBOUNCE_INTERVAL (3 * GL_AR750_KEYS_POLL_INTERVAL)

#define GL_AR750_MAC0_OFFSET            0
#define GL_AR750_WMAC2G_CALDATA_OFFSET  0x1000
#define GL_AR750_WMAC5G_CALDATA_OFFSET  0x5000

static struct gpio_led gl_ar750_leds_gpio[] __initdata = {
        {
                .name           = "gl-ar750:white:power",
                .gpio           = GL_AR750_GPIO_LED_POWER,
                .default_state  = LEDS_GPIO_DEFSTATE_KEEP,
                .active_low     = 1,
        }, {
                .name           = "gl-ar750:white:wlan2g",
                .gpio           = GL_AR750_GPIO_LED_WLAN2G,
                .active_low     = 1,
        }, {
                .name           = "gl-ar750:white:wlan5g",
                .gpio           = GL_AR750_GPIO_LED_WLAN5G,
                .active_low     = 1,
        },
};

static struct gpio_keys_button gl_ar750_gpio_keys[] __initdata = {
        {
                .desc                   = "reset",
                .type                   = EV_KEY,
                .code                   = KEY_RESTART,
                .debounce_interval      = GL_AR750_KEYS_DEBOUNCE_INTERVAL,
                .gpio                   = GL_AR750_GPIO_BTN_RESET,
                .active_low             = 1,
        }, {
                .desc                   = "sw1",
                .type                   = EV_KEY,
                .code                   = BTN_0,
                .debounce_interval      = GL_AR750_KEYS_DEBOUNCE_INTERVAL,
                .gpio                   = GL_AR750_GPIO_BTN_SW1,
                .active_low             = 1,
        },
};

static struct i2c_gpio_platform_data gl_ar750_i2c_gpio_data = {
        .sda_pin = GL_AR750_GPIO_I2C_SDA,
        .scl_pin = GL_AR750_GPIO_I2C_SCL,
};

static struct platform_device gl_ar750_i2c_gpio = {
        .name   = "i2c-gpio",
        .id     = 0,
        .dev    = {
                .platform_data = &gl_ar750_i2c_gpio_data,
        },
};

static void __init gl_ar750_setup(void)
{
        u8 *art = (u8 *) KSEG1ADDR(0x1f050000);

        ath79_register_m25p80(NULL);

        ath79_setup_ar933x_phy4_switch(false, false);
        ath79_register_mdio(0, 0x0);

        ath79_switch_data.phy4_mii_en = 1;
        ath79_switch_data.phy_poll_mask = 0xfc;

        /* WAN */
        ath79_eth0_data.duplex = DUPLEX_FULL;
        ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
        ath79_eth0_data.phy_mask = BIT(4);
        ath79_eth0_data.speed = SPEED_100;
        ath79_init_mac(ath79_eth0_data.mac_addr, art + GL_AR750_MAC0_OFFSET, 0);
        ath79_register_eth(0);

        /* LAN */
        ath79_eth1_data.duplex = DUPLEX_FULL;
        ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
        ath79_init_mac(ath79_eth1_data.mac_addr, art + GL_AR750_MAC0_OFFSET, 1);
        ath79_register_eth(1);

        /* Disable JTAG (enables GPIO0-3) */
        ath79_gpio_function_enable(AR934X_GPIO_FUNC_JTAG_DISABLE);

        ath79_register_leds_gpio(-1, ARRAY_SIZE(gl_ar750_leds_gpio),
                                 gl_ar750_leds_gpio);

        ath79_register_gpio_keys_polled(-1, GL_AR750_KEYS_POLL_INTERVAL,
                                        ARRAY_SIZE(gl_ar750_gpio_keys),
                                        gl_ar750_gpio_keys);

        gpio_request_one(GL_AR750_GPIO_USB_POWER,
                         GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
                         "USB power");

        platform_device_register(&gl_ar750_i2c_gpio);

        ath79_register_usb();

        ath79_register_wmac(art + GL_AR750_WMAC2G_CALDATA_OFFSET, NULL);

        ap91_pci_init(art + GL_AR750_WMAC5G_CALDATA_OFFSET, NULL);
}

MIPS_MACHINE(ATH79_MACH_GL_AR750, "GL-AR750", "GL.iNet GL-AR750",
             gl_ar750_setup);