d55d542c99dbd35dc7a4bf321812a0613b3ab795
[openwrt/svn-archive/archive.git] / target / linux / ar71xx / files / arch / mips / ath79 / mach-arduino-yun.c
1 /*
2 * Arduino Yun support
3 *
4 * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de>
6 *
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.
10 */
11
12 #include "dev-eth.h"
13 #include "dev-gpio-buttons.h"
14 #include "dev-leds-gpio.h"
15 #include "dev-m25p80.h"
16 #include "dev-spi.h"
17 #include "dev-usb.h"
18 #include "dev-wmac.h"
19 #include "machtypes.h"
20 #include <asm/mach-ath79/ar71xx_regs.h>
21 #include <asm/mach-ath79/ath79.h>
22 #include <linux/gpio.h>
23 #include "common.h"
24
25 // Uncomment to have reset on gpio18 instead of gipo7
26 #define DS2_B
27
28 #define DS_GPIO_LED_WLAN 0
29 #define DS_GPIO_LED_USB 1
30
31 #define DS_GPIO_OE 21
32 #define DS_GPIO_AVR_RESET 18
33
34 // Maintained to have the console in the previous version of DS2 working
35 #define DS_GPIO_AVR_RESET_DS2 7
36
37 #define DS_GPIO_OE2 22
38 #define DS_GPIO_UART_ENA 23
39 #define DS_GPIO_CONF_BTN 20
40
41 #define DS_KEYS_POLL_INTERVAL 20 /* msecs */
42 #define DS_KEYS_DEBOUNCE_INTERVAL (3 * DS_KEYS_POLL_INTERVAL)
43
44 #define DS_MAC0_OFFSET 0x0000
45 #define DS_MAC1_OFFSET 0x0006
46 #define DS_CALDATA_OFFSET 0x1000
47 #define DS_WMAC_MAC_OFFSET 0x1002
48
49
50 static struct gpio_led ds_leds_gpio[] __initdata = {
51 {
52 .name = "arduino:white:usb",
53 .gpio = DS_GPIO_LED_USB,
54 .active_low = 0,
55 },
56 {
57 .name = "arduino:blue:wlan",
58 .gpio = DS_GPIO_LED_WLAN,
59 .active_low = 0,
60 },
61 };
62
63 static void __init ds_common_setup(void)
64 {
65 static u8 mac[6];
66
67 u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
68 ath79_register_m25p80(NULL);
69
70 if (ar93xx_wmac_read_mac_address(mac)) {
71 ath79_register_wmac(NULL, NULL);
72 } else {
73 ath79_register_wmac(art + DS_CALDATA_OFFSET,
74 art + DS_WMAC_MAC_OFFSET);
75 memcpy(mac, art + DS_WMAC_MAC_OFFSET, sizeof(mac));
76 }
77
78 mac[3] |= 0x08;
79 ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);
80
81 mac[3] &= 0xF7;
82 ath79_init_mac(ath79_eth1_data.mac_addr, mac, 0);
83 ath79_register_mdio(0, 0x0);
84
85 /* LAN ports */
86 ath79_register_eth(1);
87
88 /* WAN port */
89 ath79_register_eth(0);
90 }
91
92 static void __init ds_setup(void)
93 {
94 u32 t;
95
96 ds_common_setup();
97
98 ath79_register_leds_gpio(-1, ARRAY_SIZE(ds_leds_gpio),
99 ds_leds_gpio);
100 ath79_register_usb();
101
102 //Disable the Function for some pins to have GPIO functionality active
103 // GPIO6-7-8 and GPIO11
104 ath79_gpio_function_setup(AR933X_GPIO_FUNC_JTAG_DISABLE | AR933X_GPIO_FUNC_I2S_MCK_EN, 0);
105
106 ath79_gpio_function2_setup(AR933X_GPIO_FUNC2_JUMPSTART_DISABLE, 0);
107
108 printk("Setting DogStick2 GPIO\n");
109
110 t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
111 t |= AR933X_BOOTSTRAP_MDIO_GPIO_EN;
112 ath79_reset_wr(AR933X_RESET_REG_BOOTSTRAP, t);
113
114 // Put the avr reset to high
115 if (gpio_request_one(DS_GPIO_AVR_RESET_DS2,
116 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-1") != 0)
117 printk("Error setting GPIO OE\n");
118 gpio_unexport(DS_GPIO_AVR_RESET_DS2);
119 gpio_free(DS_GPIO_AVR_RESET_DS2);
120
121 // enable OE of level shifter
122 if (gpio_request_one(DS_GPIO_OE,
123 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-1") != 0)
124 printk("Error setting GPIO OE\n");
125
126 if (gpio_request_one(DS_GPIO_UART_ENA,
127 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "UART-ENA") != 0)
128 printk("Error setting GPIO Uart Enable\n");
129
130 // enable OE of level shifter
131 if (gpio_request_one(DS_GPIO_OE2,
132 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED, "OE-2") != 0)
133 printk("Error setting GPIO OE2\n");
134 }
135
136 MIPS_MACHINE(ATH79_MACH_ARDUINO_YUN, "Yun", "Arduino Yun", ds_setup);