ar71xx: add kernel support for ZyXEL NBG 6716

With this patch OpenWRT supports the following on the ZyXEL NBG 6716:
-WiFi 2G (ath9k)
-WiFi 5G (ath10k)
-NAND flash
-2 Ethernet interfaces
-USB 2.0
-LEDs including switch
-reasonale defaults at first boot

Signed-off-by: André Valentin <avalentin@marcant.net>
Patchwork: http://patchwork.openwrt.org/patch/5101/
[juhosg:
  - rename and refresh kernel patch,
  - fix a few typos,
  - change button key codes,
  - use zyxel prefix in LED names]
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40499 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 285 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-nbg6716.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-nbg6716.c
new file mode 100644
index 0000000000..5b8c3d0109
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-nbg6716.c
@@ -0,0 +1,285 @@
+/*
+ * ZyXEL NBG6716 board support
+ *
+ * Based on the Qualcomm Atheros AP135/AP136 reference board support code
+ * Copyright (c) 2012 Qualcomm Atheros
+ * Copyright (c) 2012-2013 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (c) 2013 Andre Valentin <avalentin@marcant.net>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/ar8216_platform.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/platform/ar934x_nfc.h>
+
+#include <asm/mach-ath79/ar71xx_regs.h>
+
+#include "common.h"
+#include "pci.h"
+#include "dev-ap9x-pci.h"
+#include "dev-gpio-buttons.h"
+#include "dev-eth.h"
+#include "dev-leds-gpio.h"
+#include "dev-nfc.h"
+#include "dev-m25p80.h"
+#include "dev-usb.h"
+#include "dev-wmac.h"
+#include "machtypes.h"
+#include "nvram.h"
+
+#define NBG6716_GPIO_LED_INTERNET	18
+#define NBG6716_GPIO_LED_POWER		15
+#define NBG6716_GPIO_LED_USB0		4
+#define NBG6716_GPIO_LED_USB1		13
+#define NBG6716_GPIO_LED_WIFI2G		19
+#define NBG6716_GPIO_LED_WIFI5G		17
+#define NBG6716_GPIO_LED_WPS		21
+
+#define NBG6716_GPIO_BTN_RESET		23
+#define NBG6716_GPIO_BTN_RFKILL		1
+#define NBG6716_GPIO_BTN_USB0		14
+#define NBG6716_GPIO_BTN_USB1		0
+#define NBG6716_GPIO_BTN_WPS		22
+
+#define NBG6716_KEYS_POLL_INTERVAL	20	/* msecs */
+#define NBG6716_KEYS_DEBOUNCE_INTERVAL	(3 * NBG6716_KEYS_POLL_INTERVAL)
+
+#define NBG6716_MAC0_OFFSET		0
+#define NBG6716_MAC1_OFFSET		6
+#define NBG6716_WMAC_CALDATA_OFFSET	0x1000
+#define NBG6716_PCIE_CALDATA_OFFSET	0x5000
+
+static struct gpio_led nbg6716_leds_gpio[] __initdata = {
+	{
+		.name		= "zyxel:white:internet",
+		.gpio		= NBG6716_GPIO_LED_INTERNET,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zyxel:white:power",
+		.gpio		= NBG6716_GPIO_LED_POWER,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zyxel:white:usb0",
+		.gpio		= NBG6716_GPIO_LED_USB0,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zyxel:white:usb1",
+		.gpio		= NBG6716_GPIO_LED_USB1,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zyxel:white:wifi2g",
+		.gpio		= NBG6716_GPIO_LED_WIFI2G,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zyxel:white:wifi5g",
+		.gpio		= NBG6716_GPIO_LED_WIFI5G,
+		.active_low	= 1,
+	},
+	{
+		.name		= "zyxel:white:wps",
+		.gpio		= NBG6716_GPIO_LED_WPS,
+		.active_low	= 1,
+	}
+};
+
+static struct gpio_keys_button nbg6716_gpio_keys[] __initdata = {
+	{
+		.desc		= "RESET button",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = NBG6716_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= NBG6716_GPIO_BTN_RESET,
+		.active_low	= 1,
+	},
+	{
+		.desc		= "RFKILL button",
+		.type		= EV_KEY,
+		.code		= KEY_RFKILL,
+		.debounce_interval = NBG6716_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= NBG6716_GPIO_BTN_RFKILL,
+		.active_low	= 1,
+	},
+	{
+		.desc		= "USB0 eject button",
+		.type		= EV_KEY,
+		.code		= BTN_0,
+		.debounce_interval = NBG6716_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= NBG6716_GPIO_BTN_USB0,
+		.active_low	= 1,
+	},
+	{
+		.desc		= "USB1 eject button",
+		.type		= EV_KEY,
+		.code		= BTN_1,
+		.debounce_interval = NBG6716_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= NBG6716_GPIO_BTN_USB1,
+		.active_low	= 1,
+	},
+	{
+		.desc		= "WPS button",
+		.type		= EV_KEY,
+		.code		= KEY_WPS_BUTTON,
+		.debounce_interval = NBG6716_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= NBG6716_GPIO_BTN_WPS,
+		.active_low	= 1,
+	},
+};
+
+static struct ar8327_pad_cfg nbg6716_ar8327_pad0_cfg;
+static struct ar8327_pad_cfg nbg6716_ar8327_pad6_cfg;
+static struct ar8327_led_cfg nbg6716_ar8327_led_cfg;
+
+static struct ar8327_platform_data nbg6716_ar8327_data = {
+	.pad0_cfg = &nbg6716_ar8327_pad0_cfg,
+	.pad6_cfg = &nbg6716_ar8327_pad6_cfg,
+	.port0_cfg = {
+		.force_link = 1,
+		.speed = AR8327_PORT_SPEED_1000,
+		.duplex = 1,
+		.txpause = 1,
+		.rxpause = 1,
+	},
+	.port6_cfg = {
+		.force_link = 1,
+		.speed = AR8327_PORT_SPEED_1000,
+		.duplex = 1,
+		.txpause = 1,
+		.rxpause = 1,
+	},
+	.led_cfg = &nbg6716_ar8327_led_cfg
+};
+
+static struct mdio_board_info nbg6716_mdio0_info[] = {
+	{
+		.bus_id = "ag71xx-mdio.0",
+		.phy_addr = 0,
+		.platform_data = &nbg6716_ar8327_data,
+	},
+};
+
+static void nbg6716_get_mac(const char *name, char *mac)
+{
+	u8 *nvram = (u8 *) KSEG1ADDR(0x1f040000);
+	int err;
+
+	err = ath79_nvram_parse_mac_addr(nvram, 0x10000,
+					 name, mac);
+	if (err)
+		pr_err("no MAC address found for %s\n", name);
+}
+
+static void __init nbg6716_gmac_setup(void)
+{
+	void __iomem *base;
+	u32 t;
+
+	base = ioremap(QCA955X_GMAC_BASE, QCA955X_GMAC_SIZE);
+
+	t = __raw_readl(base + QCA955X_GMAC_REG_ETH_CFG);
+
+	t &= ~(QCA955X_ETH_CFG_RGMII_EN | QCA955X_ETH_CFG_GE0_SGMII);
+	t |= QCA955X_ETH_CFG_RGMII_EN;
+
+	__raw_writel(t, base + QCA955X_GMAC_REG_ETH_CFG);
+
+	iounmap(base);
+}
+
+static void __init nbg6716_common_setup(void)
+{
+	u8 *art = (u8 *) KSEG1ADDR(0x1f050000);
+	u8 tmpmac[ETH_ALEN];
+
+	ath79_register_m25p80(NULL);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(nbg6716_leds_gpio),
+				 nbg6716_leds_gpio);
+	ath79_register_gpio_keys_polled(-1, NBG6716_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(nbg6716_gpio_keys),
+					nbg6716_gpio_keys);
+
+	ath79_nfc_set_ecc_mode(AR934X_NFC_ECC_HW);
+	ath79_register_nfc();
+
+	ath79_register_usb();
+
+	nbg6716_get_mac("ethaddr=", tmpmac);
+
+	ath79_register_pci();
+
+	ath79_register_wmac(art + NBG6716_WMAC_CALDATA_OFFSET, tmpmac);
+
+	nbg6716_gmac_setup();
+
+	ath79_register_mdio(0, 0x0);
+
+	ath79_init_mac(ath79_eth0_data.mac_addr, tmpmac, 2);
+	ath79_init_mac(ath79_eth1_data.mac_addr, tmpmac, 3);
+
+	mdiobus_register_board_info(nbg6716_mdio0_info,
+				    ARRAY_SIZE(nbg6716_mdio0_info));
+
+	/* GMAC0 is connected to the RMGII interface */
+	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
+	ath79_eth0_data.phy_mask = BIT(0);
+	ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
+
+	ath79_register_eth(0);
+
+	/* GMAC1 is connected to the SGMII interface */
+	ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_SGMII;
+	ath79_eth1_data.speed = SPEED_1000;
+	ath79_eth1_data.duplex = DUPLEX_FULL;
+
+	ath79_register_eth(1);
+}
+
+static void __init nbg6716_010_setup(void)
+{
+	/* GMAC0 of the AR8337 switch is connected to GMAC0 via RGMII */
+	nbg6716_ar8327_pad0_cfg.mode = AR8327_PAD_MAC_RGMII;
+	nbg6716_ar8327_pad0_cfg.txclk_delay_en = true;
+	nbg6716_ar8327_pad0_cfg.rxclk_delay_en = true;
+	nbg6716_ar8327_pad0_cfg.txclk_delay_sel = AR8327_CLK_DELAY_SEL1;
+	nbg6716_ar8327_pad0_cfg.rxclk_delay_sel = AR8327_CLK_DELAY_SEL2;
+
+	/* GMAC6 of the AR8337 switch is connected to GMAC1 via SGMII */
+	nbg6716_ar8327_pad6_cfg.mode = AR8327_PAD_MAC_SGMII;
+	nbg6716_ar8327_pad6_cfg.rxclk_delay_en = true;
+	nbg6716_ar8327_pad6_cfg.rxclk_delay_sel = AR8327_CLK_DELAY_SEL0;
+
+	ath79_eth0_pll_data.pll_1000 = 0xa6000000;
+	ath79_eth1_pll_data.pll_1000 = 0x03000101;
+
+	nbg6716_ar8327_led_cfg.open_drain = 0;
+	nbg6716_ar8327_led_cfg.led_ctrl0 = 0xffb7ffb7;
+	nbg6716_ar8327_led_cfg.led_ctrl1 = 0xffb7ffb7;
+	nbg6716_ar8327_led_cfg.led_ctrl2 = 0xffb7ffb7;
+	nbg6716_ar8327_led_cfg.led_ctrl3 = 0x03ffff00;
+
+	nbg6716_common_setup();
+}
+
+MIPS_MACHINE(ATH79_MACH_NBG6716, "NBG6716",
+	     "Zyxel NBG6716",
+	     nbg6716_010_setup);
+