ar71xx: add support for Zbtlink ZBT-WE1526

Zbtlink ZBT-WE1526 is based on Qualcomm Atheros QCA9531 v2.
Short specification:

- 650/400/200 MHz (CPU/DDR/AHB)
- 5x 10/100 Mbps Ethernet
- 1x USB 2.0
- 128 MB of RAM (DDR2)
- 16 MB of FLASH
- 2T2R 2.4 GHz, up to 22 dBm
- two external, non-detachable antennas
- 8x LED, 1x button
- UART header (pinout: VCC, RX, TX, GND)

Flash instruction:

Use sysupgrade in vendor firmare which is based on OpenWrt.

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

4 files changed, 165 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
index a0ceecb..a6f19da 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
@@ -1552,6 +1552,16 @@ config ATH79_MACH_MYNET_REXT
 	select ATH79_DEV_WMAC
 	select ATH79_NVRAM
 
+config ATH79_MACH_ZBT_WE1526
+	bool "Zbtlink ZBT-WE1526 board support"
+	select SOC_QCA953X
+	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_ZCN_1523H
 	bool "Zcomax ZCN-1523H support"
 	select SOC_AR724X
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Makefile b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
index ff4fe9f2..3222a76 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Makefile
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
@@ -205,6 +205,7 @@ obj-$(CONFIG_ATH79_MACH_WZR_HP_G300NH2)	+= mach-wzr-hp-g300nh2.o
 obj-$(CONFIG_ATH79_MACH_WZR_HP_AG300H)	+= mach-wzr-hp-ag300h.o
 obj-$(CONFIG_ATH79_MACH_WZR_HP_G450H)	+= mach-wzr-hp-g450h.o
 obj-$(CONFIG_ATH79_MACH_WZR_450HP2)	+= mach-wzr-450hp2.o
+obj-$(CONFIG_ATH79_MACH_ZBT_WE1526)	+= mach-zbt-we1526.o
 obj-$(CONFIG_ATH79_MACH_ZCN_1523H)	+= mach-zcn-1523h.o
 obj-$(CONFIG_ATH79_MACH_CARAMBOLA2)	+= mach-carambola2.o
 obj-$(CONFIG_ATH79_MACH_NBG6716)	+= mach-nbg6716.o
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-zbt-we1526.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-zbt-we1526.c
new file mode 100644
index 0000000..42bad11
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-zbt-we1526.c
@@ -0,0 +1,153 @@
+/*
+ * Zbtlink ZBT-WE1526 board support
+ *
+ * Copyright (C) 2016 Piotr Dymacz <pepe2k@gmail.com>
+ *
+ * Based on mach-dr531.c and mach-tl-wr841n-v9.c
+ *
+ * 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 ZBT_WE1526_GPIO_LED_STATUS	13
+#define ZBT_WE1526_GPIO_LED_LAN1	16
+#define ZBT_WE1526_GPIO_LED_LAN2	15
+#define ZBT_WE1526_GPIO_LED_LAN3	14
+#define ZBT_WE1526_GPIO_LED_LAN4	11
+#define ZBT_WE1526_GPIO_LED_WAN		4
+#define ZBT_WE1526_GPIO_LED_WLAN	12
+
+#define ZBT_WE1526_GPIO_BTN_RESET	17
+
+#define ZBT_WE1526_KEYS_POLL_INTERVAL	20	/* msecs */
+#define ZBT_WE1526_KEYS_DEBOUNCE_INTERVAL	\
+	(3 * ZBT_WE1526_KEYS_POLL_INTERVAL)
+
+#define ZBT_WE1526_MAC0_OFFSET		0x0
+#define ZBT_WE1526_MAC1_OFFSET		0x6
+#define ZBT_WE1526_WMAC_CALDATA_OFFSET	0x1000
+
+static struct gpio_led zbt_we1526_leds_gpio[] __initdata = {
+	{
+		.name		= "zbt-we1526:green:status",
+		.gpio		= ZBT_WE1526_GPIO_LED_STATUS,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zbt-we1526:green:lan1",
+		.gpio		= ZBT_WE1526_GPIO_LED_LAN1,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zbt-we1526:green:lan2",
+		.gpio		= ZBT_WE1526_GPIO_LED_LAN2,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zbt-we1526:green:lan3",
+		.gpio		= ZBT_WE1526_GPIO_LED_LAN3,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zbt-we1526:green:lan4",
+		.gpio		= ZBT_WE1526_GPIO_LED_LAN4,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zbt-we1526:green:wan",
+		.gpio		= ZBT_WE1526_GPIO_LED_WAN,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zbt-we1526:green:wlan",
+		.gpio		= ZBT_WE1526_GPIO_LED_WLAN,
+		.active_low	= 1,
+	},
+};
+
+static struct gpio_keys_button zbt_we1526_gpio_keys[] __initdata = {
+	{
+		.desc		= "reset",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = ZBT_WE1526_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= ZBT_WE1526_GPIO_BTN_RESET,
+		.active_low	= 1,
+	},
+};
+
+static void __init zbt_we1526_gpio_setup(void)
+{
+	/* For LED on GPIO4 */
+	ath79_gpio_function_disable(AR934X_GPIO_FUNC_CLK_OBS4_EN);
+	ath79_gpio_output_select(ZBT_WE1526_GPIO_LED_WAN, 0);
+
+	ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_STATUS, true);
+	ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_LAN1, true);
+	ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_LAN2, true);
+	ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_LAN3, true);
+	ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_LAN4, true);
+	ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_WAN, true);
+	ath79_gpio_direction_select(ZBT_WE1526_GPIO_LED_WLAN, true);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(zbt_we1526_leds_gpio),
+				 zbt_we1526_leds_gpio);
+
+	ath79_register_gpio_keys_polled(-1, ZBT_WE1526_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(zbt_we1526_gpio_keys),
+					zbt_we1526_gpio_keys);
+}
+
+static void __init zbt_we1526_setup(void)
+{
+	u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
+
+	ath79_register_m25p80(NULL);
+
+	zbt_we1526_gpio_setup();
+
+	ath79_setup_ar933x_phy4_switch(false, false);
+
+	ath79_register_mdio(0, 0x0);
+
+	/* LAN */
+	ath79_eth1_data.duplex = DUPLEX_FULL;
+	ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
+	ath79_switch_data.phy_poll_mask |= BIT(4);
+	ath79_init_mac(ath79_eth1_data.mac_addr,
+		       art + ZBT_WE1526_MAC0_OFFSET, 0);
+	ath79_register_eth(1);
+
+	/* WAN */
+	ath79_switch_data.phy4_mii_en = 1;
+	ath79_eth0_data.duplex = DUPLEX_FULL;
+	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
+	ath79_eth0_data.phy_mask = BIT(4);
+	ath79_eth0_data.speed = SPEED_100;
+	ath79_init_mac(ath79_eth0_data.mac_addr,
+		       art + ZBT_WE1526_MAC1_OFFSET, 0);
+	ath79_register_eth(0);
+
+	ath79_register_wmac(art + ZBT_WE1526_WMAC_CALDATA_OFFSET, NULL);
+
+	ath79_register_usb();
+}
+
+MIPS_MACHINE(ATH79_MACH_ZBT_WE1526, "ZBT-WE1526", "Zbtlink ZBT-WE1526",
+	     zbt_we1526_setup);
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
index 3051a25..a3b8c87 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
@@ -266,6 +266,7 @@ enum ath79_mach_type {
 	ATH79_MACH_WZR_HP_G300NH2,	/* Buffalo WZR-HP-G300NH2 */
 	ATH79_MACH_WZR_HP_G450H,	/* Buffalo WZR-HP-G450H */
 	ATH79_MACH_WZR_450HP2,		/* Buffalo WZR-450HP2 */
+	ATH79_MACH_ZBT_WE1526,		/* Zbtlink ZBT-WE1526 */
 	ATH79_MACH_ZCN_1523H_2,		/* Zcomax ZCN-1523H-2-xx */
 	ATH79_MACH_ZCN_1523H_5,		/* Zcomax ZCN-1523H-5-xx */
 };