ar71xx: add support for ALFA Network AP121F

ALFA Network AP121F is a pocket-size router dedicated for VPN/TOR users.
Device is based on Atheros AR9331 WiSoC and is running a custom version
(updated from OpenWrt CC to LEDE 17.01 release) of NetAidKit firmware.

Specification:

- 400/400/200 MHz (CPU/DDR/AHB)
- 64 MB of RAM (DDR1)
- 16 MB of FLASH (SPI NOR)
- 1x 10/100 Mbps Ethernet
- 1T1R 2.4 GHz
- 1x microSD (optional, on separate PCB)
- 3x LED, 1x button, 1x switch
- UART header on PCB

Flash instruction (under U-Boot web recovery mode):

1. Configure PC with static IP 192.168.1.2/24.
2. Connect PC with RJ45 port, press the reset button, power up device,
   wait for first blink of all LEDs (indicates network setup), then keep
   button for 3 following blinks and release it.
3. Open 192.168.1.1 address in your browser and upload sysupgrade image.

Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

target/linux/ar71xx/base-files/etc/board.d/01_leds

@@ -49,6 +49,10 @@ antrouter-r1)
 	ucidef_set_led_wlan "wlan" "WLAN" "$board:green:wlan" "phy0tpt"
 	ucidef_set_led_default "btc" "BTC" "$board:green:btc" "0"
 	;;
+ap121f)
+	ucidef_set_led_netdev "lan" "LAN" "$board:green:lan" "eth0"
+	ucidef_set_led_wlan "wlan" "WLAN" "$board:green:wlan" "phy0tpt"
+	;;
 arduino-yun)
 	ucidef_set_led_wlan "wlan" "WLAN" "arduino:blue:wlan" "phy0tpt"
 	ucidef_set_led_usbdev "usb" "USB" "arduino:white:usb" "1-1.1"

target/linux/ar71xx/base-files/etc/board.d/02_network

@@ -61,6 +61,7 @@ ar71xx_setup_interfaces()
 	antminer-s1|\
 	antminer-s3|\
 	antrouter-r1|\
+	ap121f|\
 	aw-nr580|\
 	bullet-m|\
 	c-55|\

target/linux/ar71xx/base-files/etc/diag.sh

@@ -29,6 +29,9 @@ get_status_led() {
 	xd3200)
 		status_led="$board:green:system"
 		;;
+	ap121f)
+		status_led="$board:green:vpn"
+		;;
 	ap132|\
 	db120|\
 	dr344|\

target/linux/ar71xx/base-files/lib/ar71xx.sh

@@ -433,6 +433,9 @@ ar71xx_board_detect() {
 	*AP121-MINI)
 		name="ap121-mini"
 		;;
+	*"AP121F")
+		name="ap121f"
+		;;
 	*"AP132 reference board")
 		name="ap132"
 		;;

target/linux/ar71xx/base-files/lib/upgrade/platform.sh

@@ -203,6 +203,7 @@ platform_check_image() {
 	airgatewaypro|\
 	airgateway|\
 	airrouter|\
+	ap121f|\
 	ap132|\
 	ap90q|\
 	bullet-m|\

target/linux/ar71xx/config-4.4

@@ -42,6 +42,7 @@ CONFIG_ATH79_MACH_ANTMINER_S1=y
 CONFIG_ATH79_MACH_ANTMINER_S3=y
 CONFIG_ATH79_MACH_ANTROUTER_R1=y
 CONFIG_ATH79_MACH_AP121=y
+CONFIG_ATH79_MACH_AP121F=y
 CONFIG_ATH79_MACH_AP132=y
 CONFIG_ATH79_MACH_AP136=y
 CONFIG_ATH79_MACH_AP143=y

target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt

@@ -16,6 +16,16 @@ config ATH79_MACH_ALFA_AP120C
 	select ATH79_DEV_M25P80
 	select ATH79_DEV_WMAC
 
+config ATH79_MACH_AP121F
+	bool "ALFA Network AP121F support"
+	select SOC_AR933X
+	select ATH79_DEV_ETH
+	select ATH79_DEV_GPIO_BUTTONS
+	select ATH79_DEV_LEDS_GPIO
+	select ATH79_DEV_M25P80
+	select ATH79_DEV_USB
+	select ATH79_DEV_WMAC
+
 config ATH79_MACH_ALFA_AP96
 	bool "ALFA Network AP96 board support"
 	select SOC_AR71XX

target/linux/ar71xx/files/arch/mips/ath79/Makefile

@@ -48,6 +48,7 @@ obj-$(CONFIG_ATH79_MACH_ANTMINER_S1)		+= mach-antminer-s1.o
 obj-$(CONFIG_ATH79_MACH_ANTMINER_S3)		+= mach-antminer-s3.o
 obj-$(CONFIG_ATH79_MACH_ANTROUTER_R1)		+= mach-antrouter-r1.o
 obj-$(CONFIG_ATH79_MACH_AP121)			+= mach-ap121.o
+obj-$(CONFIG_ATH79_MACH_AP121F)			+= mach-ap121f.o
 obj-$(CONFIG_ATH79_MACH_AP132)			+= mach-ap132.o
 obj-$(CONFIG_ATH79_MACH_AP136)			+= mach-ap136.o
 obj-$(CONFIG_ATH79_MACH_AP143)			+= mach-ap143.o

target/linux/ar71xx/files/arch/mips/ath79/mach-ap121f.c

@@ -0,0 +1,103 @@
+/*
+ * ALFA Network AP121F board support
+ *
+ * Copyright (C) 2017 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/platform_device.h>
+
+#include <asm/mach-ath79/ath79.h>
+#include <asm/mach-ath79/ar71xx_regs.h>
+
+#include "common.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 AP121F_GPIO_LED_LAN	17
+#define AP121F_GPIO_LED_VPN	27
+#define AP121F_GPIO_LED_WLAN	0
+
+#define AP121F_GPIO_MICROSD_EN	26
+
+#define AP121F_GPIO_BTN_RESET	12
+#define AP121F_GPIO_BTN_SWITCH	21
+
+#define AP121F_KEYS_POLL_INTERVAL	20
+#define AP121F_KEYS_DEBOUNCE_INTERVAL	(3 * AP121F_KEYS_POLL_INTERVAL)
+
+#define AP121F_WMAC_CALDATA_OFFSET	0x1000
+
+static struct gpio_led ap121f_leds_gpio[] __initdata = {
+	{
+		.name		= "ap121f:green:lan",
+		.gpio		= AP121F_GPIO_LED_LAN,
+		.active_low	= 1,
+	}, {
+		.name		= "ap121f:green:vpn",
+		.gpio		= AP121F_GPIO_LED_VPN,
+		.active_low	= 1,
+	}, {
+		.name		= "ap121f:green:wlan",
+		.gpio		= AP121F_GPIO_LED_WLAN,
+		.active_low	= 0,
+	},
+};
+
+static struct gpio_keys_button ap121f_gpio_keys[] __initdata = {
+	{
+		.desc			= "reset",
+		.type			= EV_KEY,
+		.code			= KEY_RESTART,
+		.debounce_interval	= AP121F_KEYS_DEBOUNCE_INTERVAL,
+		.gpio			= AP121F_GPIO_BTN_RESET,
+		.active_low		= 1,
+	}, {
+		.desc			= "switch",
+		.type			= EV_KEY,
+		.code			= BTN_0,
+		.debounce_interval	= AP121F_KEYS_DEBOUNCE_INTERVAL,
+		.gpio			= AP121F_GPIO_BTN_SWITCH,
+		.active_low		= 0,
+	},
+};
+
+static void __init ap121f_setup(void)
+{
+	u8 *art = (u8 *) KSEG1ADDR(0x1f040000);
+
+	ath79_register_m25p80(NULL);
+
+	ath79_setup_ar933x_phy4_switch(false, false);
+
+	/* LAN */
+	ath79_register_mdio(0, 0x0);
+	ath79_init_mac(ath79_eth0_data.mac_addr, art, 0);
+	ath79_register_eth(0);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(ap121f_leds_gpio),
+				 ap121f_leds_gpio);
+
+	ath79_register_gpio_keys_polled(-1, AP121F_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(ap121f_gpio_keys),
+					ap121f_gpio_keys);
+
+	gpio_request_one(AP121F_GPIO_MICROSD_EN,
+			 GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
+			 "microSD enable");
+
+	ath79_register_wmac(art + AP121F_WMAC_CALDATA_OFFSET, NULL);
+
+	ath79_register_usb();
+}
+
+MIPS_MACHINE(ATH79_MACH_AP121F, "AP121F", "ALFA Network AP121F", ap121f_setup);

target/linux/ar71xx/files/arch/mips/ath79/machtypes.h

@@ -30,6 +30,7 @@ enum ath79_mach_type {
 	ATH79_MACH_ANTROUTER_R1,		/* Antrouter R1 */
 	ATH79_MACH_AP121,			/* Atheros AP121 reference board */
 	ATH79_MACH_AP121_MINI,			/* Atheros AP121-MINI reference board */
+	ATH79_MACH_AP121F,			/* ALFA Network AP121F */
 	ATH79_MACH_AP132,			/* Atheros AP132 reference board */
 	ATH79_MACH_AP135_020,			/* Atheros AP135-020 reference board */
 	ATH79_MACH_AP136_010,			/* Atheros AP136-010 reference board */

target/linux/ar71xx/image/generic.mk

@@ -1,3 +1,16 @@
+define Device/ap121f
+  DEVICE_TITLE := ALFA Network AP121F
+  DEVICE_PACKAGES := kmod-usb-core kmod-usb2 kmod-usb-storage -swconfig
+  BOARDNAME := AP121F
+  IMAGE_SIZE := 16064k
+  CONSOLE := ttyATH0,115200
+  MTDPARTS := spi0.0:192k(u-boot)ro,64k(u-boot-env),64k(art)ro,-(firmware)
+  SUPPORTED_DEVICES := ap121f
+  IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(BLOCKSIZE) | \
+	append-rootfs | pad-rootfs | append-metadata | check-size $$$$(IMAGE_SIZE)
+endef
+TARGET_DEVICES += ap121f
+
 define Device/ap90q
   DEVICE_TITLE := YunCore AP90Q
   BOARDNAME = AP90Q

target/linux/ar71xx/mikrotik/config-default

@@ -8,6 +8,7 @@
 # CONFIG_ATH79_MACH_ANTMINER_S3 is not set
 # CONFIG_ATH79_MACH_ANTROUTER_R1 is not set
 # CONFIG_ATH79_MACH_AP121 is not set
+# CONFIG_ATH79_MACH_AP121F is not set
 # CONFIG_ATH79_MACH_AP132 is not set
 # CONFIG_ATH79_MACH_AP136 is not set
 # CONFIG_ATH79_MACH_AP143 is not set

target/linux/ar71xx/nand/config-default

@@ -4,6 +4,7 @@
 # CONFIG_ATH79_MACH_ALL0258N is not set
 # CONFIG_ATH79_MACH_ALL0315N is not set
 # CONFIG_ATH79_MACH_AP121 is not set
+# CONFIG_ATH79_MACH_AP121F is not set
 # CONFIG_ATH79_MACH_AP132 is not set
 # CONFIG_ATH79_MACH_AP136 is not set
 # CONFIG_ATH79_MACH_AP147 is not set