OpenWrt – Rev 3
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/*
* Arduino Yun support
*
* Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de>
*
* 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 "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"
#include <asm/mach-ath79/ar71xx_regs.h>
#include <asm/mach-ath79/ath79.h>
#include <linux/gpio.h>
#include "common.h"
// Uncomment to have reset on gpio18 instead of gipo7
#define DS2_B
#define DS_GPIO_LED_WLAN 0
#define DS_GPIO_LED_USB 1
#define DS_GPIO_OE 21
#define DS_GPIO_AVR_RESET 18
// Maintained to have the console in the previous version of DS2 working
#define DS_GPIO_AVR_RESET_DS2 7
#define DS_GPIO_OE2 22
#define DS_GPIO_UART_ENA 23
#define DS_GPIO_CONF_BTN 20
#define DS_KEYS_POLL_INTERVAL 20 /* msecs */
#define DS_KEYS_DEBOUNCE_INTERVAL (3 * DS_KEYS_POLL_INTERVAL)
#define DS_MAC0_OFFSET 0x0000
#define DS_MAC1_OFFSET 0x0006
#define DS_CALDATA_OFFSET 0x1000
#define DS_WMAC_MAC_OFFSET 0x1002
static struct gpio_led ds_leds_gpio[] __initdata = {
{
.name = "arduino:white:usb",
.gpio = DS_GPIO_LED_USB,
.active_low = 0,
},
{
.name = "arduino:blue:wlan",
.gpio = DS_GPIO_LED_WLAN,
.active_low = 0,
},
};
static struct gpio_keys_button ds_gpio_keys[] __initdata = {
{
.desc = "configuration button",
.type = EV_KEY,
.code = KEY_WPS_BUTTON,
.debounce_interval = DS_KEYS_DEBOUNCE_INTERVAL,
.gpio = DS_GPIO_CONF_BTN,
.active_low = 1,
},
};
static void __init ds_common_setup(void)
{
static u8 mac[6];
u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
ath79_register_m25p80(NULL);
if (ar93xx_wmac_read_mac_address(mac)) {
ath79_register_wmac(NULL, NULL);
} else {
ath79_register_wmac(art + DS_CALDATA_OFFSET,
art + DS_WMAC_MAC_OFFSET);
memcpy(mac, art + DS_WMAC_MAC_OFFSET, sizeof(mac));
}
mac[3] |= 0x08;
ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);
mac[3] &= 0xF7;
ath79_init_mac(ath79_eth1_data.mac_addr, mac, 0);
ath79_register_mdio(0, 0x0);
/* LAN ports */
ath79_register_eth(1);
/* WAN port */
ath79_register_eth(0);
}
static void __init ds_setup(void)
{
u32 t;
ds_common_setup();
ath79_register_leds_gpio(-1, ARRAY_SIZE(ds_leds_gpio),
ds_leds_gpio);
ath79_register_gpio_keys_polled(-1, DS_KEYS_POLL_INTERVAL,
ARRAY_SIZE(ds_gpio_keys),
ds_gpio_keys);
ath79_register_usb();
/* use the swtich_led directly form sysfs */
ath79_gpio_function_disable(AR933X_GPIO_FUNC_ETH_SWITCH_LED0_EN |
AR933X_GPIO_FUNC_ETH_SWITCH_LED1_EN |
AR933X_GPIO_FUNC_ETH_SWITCH_LED2_EN |
AR933X_GPIO_FUNC_ETH_SWITCH_LED3_EN |
AR933X_GPIO_FUNC_ETH_SWITCH_LED4_EN);
//Disable the Function for some pins to have GPIO functionality active
// GPIO6-7-8 and GPIO11
ath79_gpio_function_setup(AR933X_GPIO_FUNC_JTAG_DISABLE | AR933X_GPIO_FUNC_I2S_MCK_EN, 0);
ath79_gpio_function2_setup(AR933X_GPIO_FUNC2_JUMPSTART_DISABLE, 0);
printk("Setting DogStick2 GPIO\n");
t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
t |= AR933X_BOOTSTRAP_MDIO_GPIO_EN;
ath79_reset_wr(AR933X_RESET_REG_BOOTSTRAP, t);
// Put the avr reset to high
if (gpio_request_one(DS_GPIO_AVR_RESET_DS2,
GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-1") != 0)
printk("Error setting GPIO OE\n");
gpio_unexport(DS_GPIO_AVR_RESET_DS2);
gpio_free(DS_GPIO_AVR_RESET_DS2);
// enable OE of level shifter
if (gpio_request_one(DS_GPIO_OE,
GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-1") != 0)
printk("Error setting GPIO OE\n");
if (gpio_request_one(DS_GPIO_UART_ENA,
GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "UART-ENA") != 0)
printk("Error setting GPIO Uart Enable\n");
// enable OE of level shifter
if (gpio_request_one(DS_GPIO_OE2,
GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-2") != 0)
printk("Error setting GPIO OE2\n");
}
MIPS_MACHINE(ATH79_MACH_ARDUINO_YUN, "Yun", "Arduino Yun", ds_setup);