ar71xx: add Arduino Yun

[openwrt/openwrt.git] / target / linux / ar71xx / files / arch / mips / ath79 / mach-arduino-yun.c

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-arduino-yun.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-arduino-yun.c
new file mode 100644 (file)
index 0000000..fbe1f99
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-arduino-yun.c
@@ -0,0 +1,137 @@
+/*
+ *  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 "common.h"
+#include "gpio.h"
+#include "linux/gpio.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 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_usb();
+
+       //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);