4 * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published
9 * by the Free Software Foundation.
13 #include "dev-gpio-buttons.h"
14 #include "dev-leds-gpio.h"
15 #include "dev-m25p80.h"
19 #include "machtypes.h"
20 #include <asm/mach-ath79/ar71xx_regs.h>
21 #include <asm/mach-ath79/ath79.h>
24 #include "linux/gpio.h"
26 // Uncomment to have reset on gpio18 instead of gipo7
29 #define DS_GPIO_LED_WLAN 0
30 #define DS_GPIO_LED_USB 1
33 #define DS_GPIO_AVR_RESET 18
35 // Maintained to have the console in the previous version of DS2 working
36 #define DS_GPIO_AVR_RESET_DS2 7
38 #define DS_GPIO_OE2 22
39 #define DS_GPIO_UART_ENA 23
40 #define DS_GPIO_CONF_BTN 20
42 #define DS_KEYS_POLL_INTERVAL 20 /* msecs */
43 #define DS_KEYS_DEBOUNCE_INTERVAL (3 * DS_KEYS_POLL_INTERVAL)
45 #define DS_MAC0_OFFSET 0x0000
46 #define DS_MAC1_OFFSET 0x0006
47 #define DS_CALDATA_OFFSET 0x1000
48 #define DS_WMAC_MAC_OFFSET 0x1002
51 static struct gpio_led ds_leds_gpio[] __initdata = {
53 .name = "arduino:white:usb",
54 .gpio = DS_GPIO_LED_USB,
58 .name = "arduino:blue:wlan",
59 .gpio = DS_GPIO_LED_WLAN,
64 static void __init ds_common_setup(void)
68 u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
69 ath79_register_m25p80(NULL);
71 if (ar93xx_wmac_read_mac_address(mac)) {
72 ath79_register_wmac(NULL, NULL);
74 ath79_register_wmac(art + DS_CALDATA_OFFSET,
75 art + DS_WMAC_MAC_OFFSET);
76 memcpy(mac, art + DS_WMAC_MAC_OFFSET, sizeof(mac));
80 ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);
83 ath79_init_mac(ath79_eth1_data.mac_addr, mac, 0);
84 ath79_register_mdio(0, 0x0);
87 ath79_register_eth(1);
90 ath79_register_eth(0);
93 static void __init ds_setup(void)
99 ath79_register_leds_gpio(-1, ARRAY_SIZE(ds_leds_gpio),
101 ath79_register_usb();
103 //Disable the Function for some pins to have GPIO functionality active
104 // GPIO6-7-8 and GPIO11
105 ath79_gpio_function_setup(AR933X_GPIO_FUNC_JTAG_DISABLE | AR933X_GPIO_FUNC_I2S_MCK_EN, 0);
107 ath79_gpio_function2_setup(AR933X_GPIO_FUNC2_JUMPSTART_DISABLE, 0);
109 printk("Setting DogStick2 GPIO\n");
111 t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
112 t |= AR933X_BOOTSTRAP_MDIO_GPIO_EN;
113 ath79_reset_wr(AR933X_RESET_REG_BOOTSTRAP, t);
115 // Put the avr reset to high
116 if (gpio_request_one(DS_GPIO_AVR_RESET_DS2,
117 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-1") != 0)
118 printk("Error setting GPIO OE\n");
119 gpio_unexport(DS_GPIO_AVR_RESET_DS2);
120 gpio_free(DS_GPIO_AVR_RESET_DS2);
122 // enable OE of level shifter
123 if (gpio_request_one(DS_GPIO_OE,
124 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-1") != 0)
125 printk("Error setting GPIO OE\n");
127 if (gpio_request_one(DS_GPIO_UART_ENA,
128 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "UART-ENA") != 0)
129 printk("Error setting GPIO Uart Enable\n");
131 // enable OE of level shifter
132 if (gpio_request_one(DS_GPIO_OE2,
133 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-2") != 0)
134 printk("Error setting GPIO OE2\n");
137 MIPS_MACHINE(ATH79_MACH_ARDUINO_YUN, "Yun", "Arduino Yun", ds_setup);