ar71xx: Add kernel 4.9 support

This add support for kernel 4.9 to the ar71xx target.
It was compile tested with the generic, NAND and mikrotik subtarget.
Multiple members of the community tested it on their boards and did not
report any major problem so far.

Especially the NAND part received some changes to adapt to the new
kernel APIs. The serial driver hack used for the Arduino Yun was not
ported because the kernel changed there a lot.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 149 insertions, 0 deletions

diff --git a/target/linux/ar71xx/patches-4.9/603-MIPS-ath79-ap121-fixes.patch b/target/linux/ar71xx/patches-4.9/603-MIPS-ath79-ap121-fixes.patch
new file mode 100644
index 0000000000..773a858ae1
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.9/603-MIPS-ath79-ap121-fixes.patch
@@ -0,0 +1,149 @@
+--- a/arch/mips/ath79/mach-ap121.c
++++ b/arch/mips/ath79/mach-ap121.c
+@@ -1,19 +1,21 @@
+ /*
+  *  Atheros AP121 board support
+  *
+- *  Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
++ *  Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
+  *
+  *  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 "machtypes.h"
++#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"
+ 
+ #define AP121_GPIO_LED_WLAN		0
+ #define AP121_GPIO_LED_USB		1
+@@ -24,7 +26,14 @@
+ #define AP121_KEYS_POLL_INTERVAL	20	/* msecs */
+ #define AP121_KEYS_DEBOUNCE_INTERVAL	(3 * AP121_KEYS_POLL_INTERVAL)
+ 
+-#define AP121_CAL_DATA_ADDR	0x1fff1000
++#define AP121_MAC0_OFFSET		0x0000
++#define AP121_MAC1_OFFSET		0x0006
++#define AP121_CALDATA_OFFSET		0x1000
++#define AP121_WMAC_MAC_OFFSET		0x1002
++
++#define AP121_MINI_GPIO_LED_WLAN	0
++#define AP121_MINI_GPIO_BTN_JUMPSTART	12
++#define AP121_MINI_GPIO_BTN_RESET	11
+ 
+ static struct gpio_led ap121_leds_gpio[] __initdata = {
+ 	{
+@@ -58,35 +67,78 @@ static struct gpio_keys_button ap121_gpi
+ 	}
+ };
+ 
+-static struct spi_board_info ap121_spi_info[] = {
++static struct gpio_led ap121_mini_leds_gpio[] __initdata = {
+ 	{
+-		.bus_num	= 0,
+-		.chip_select	= 0,
+-		.max_speed_hz	= 25000000,
+-		.modalias	= "mx25l1606e",
+-	}
++		.name		= "ap121:green:wlan",
++		.gpio		= AP121_MINI_GPIO_LED_WLAN,
++		.active_low	= 0,
++	},
+ };
+ 
+-static struct ath79_spi_platform_data ap121_spi_data = {
+-	.bus_num	= 0,
+-	.num_chipselect = 1,
++static struct gpio_keys_button ap121_mini_gpio_keys[] __initdata = {
++	{
++		.desc		= "jumpstart button",
++		.type		= EV_KEY,
++		.code		= KEY_WPS_BUTTON,
++		.debounce_interval = AP121_KEYS_DEBOUNCE_INTERVAL,
++		.gpio		= AP121_MINI_GPIO_BTN_JUMPSTART,
++		.active_low	= 1,
++	},
++	{
++		.desc		= "reset button",
++		.type		= EV_KEY,
++		.code		= KEY_RESTART,
++		.debounce_interval = AP121_KEYS_DEBOUNCE_INTERVAL,
++		.gpio		= AP121_MINI_GPIO_BTN_RESET,
++		.active_low	= 1,
++	}
+ };
+ 
++static void __init ap121_common_setup(void)
++{
++	u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
++
++	ath79_register_m25p80(NULL);
++	ath79_register_wmac(art + AP121_CALDATA_OFFSET,
++			    art + AP121_WMAC_MAC_OFFSET);
++
++	ath79_init_mac(ath79_eth0_data.mac_addr, art + AP121_MAC0_OFFSET, 0);
++	ath79_init_mac(ath79_eth1_data.mac_addr, art + AP121_MAC1_OFFSET, 0);
++
++	ath79_register_mdio(0, 0x0);
++
++	/* LAN ports */
++	ath79_register_eth(1);
++
++	/* WAN port */
++	ath79_register_eth(0);
++}
++
+ static void __init ap121_setup(void)
+ {
+-	u8 *cal_data = (u8 *) KSEG1ADDR(AP121_CAL_DATA_ADDR);
++	ap121_common_setup();
+ 
+ 	ath79_register_leds_gpio(-1, ARRAY_SIZE(ap121_leds_gpio),
+ 				 ap121_leds_gpio);
+ 	ath79_register_gpio_keys_polled(-1, AP121_KEYS_POLL_INTERVAL,
+ 					ARRAY_SIZE(ap121_gpio_keys),
+ 					ap121_gpio_keys);
+-
+-	ath79_register_spi(&ap121_spi_data, ap121_spi_info,
+-			   ARRAY_SIZE(ap121_spi_info));
+ 	ath79_register_usb();
+-	ath79_register_wmac(cal_data, NULL);
+ }
+ 
+ MIPS_MACHINE(ATH79_MACH_AP121, "AP121", "Atheros AP121 reference board",
+ 	     ap121_setup);
++
++static void __init ap121_mini_setup(void)
++{
++	ap121_common_setup();
++
++	ath79_register_leds_gpio(-1, ARRAY_SIZE(ap121_mini_leds_gpio),
++				 ap121_mini_leds_gpio);
++	ath79_register_gpio_keys_polled(-1, AP121_KEYS_POLL_INTERVAL,
++					ARRAY_SIZE(ap121_mini_gpio_keys),
++					ap121_mini_gpio_keys);
++}
++
++MIPS_MACHINE(ATH79_MACH_AP121_MINI, "AP121-MINI", "Atheros AP121-MINI",
++	     ap121_mini_setup);
+--- a/arch/mips/ath79/Kconfig
++++ b/arch/mips/ath79/Kconfig
+@@ -5,9 +5,10 @@ menu "Atheros AR71XX/AR724X/AR913X machi
+ config ATH79_MACH_AP121
+ 	bool "Atheros AP121 reference board"
+ 	select SOC_AR933X
++	select ATH79_DEV_ETH
+ 	select ATH79_DEV_GPIO_BUTTONS
+ 	select ATH79_DEV_LEDS_GPIO
+-	select ATH79_DEV_SPI
++	select ATH79_DEV_M25P80
+ 	select ATH79_DEV_USB
+ 	select ATH79_DEV_WMAC
+ 	help