lantiq: Add support for linux 4.4

The following patches were dropped because they are already applied
upstream:
- 0038-MIPS-lantiq-fpi-on-ar9.patch
- 0039-MIPS-lantiq-initialize-usb-on-boot.patch
- 0042-USB-DWC2-big-endian-support.patch
- 0043-gpio-stp-xway-fix-phy-mask.patch

All other patches were simply refreshed, except the following:
- 0001-MIPS-lantiq-add-pcie-driver.patch
  Changes to arch/mips/lantiq/xway/sysctrl.c (these changes disabled
  some PMU gates for the vrx200 / VR9 SoCs) were removed since the
  upstream kernel disables unused PMU gates automatically (since
  95135bfa7ead1becc2879230f72583dde2b71a0c
  "MIPS: Lantiq: Deactivate most of the devices by default").
- 0025-NET-MIPS-lantiq-adds-xrx200-net.patch
  Since OpenWrt commit 55ba20afcc2fe785146316e5be2c2473cb329885 drivers
  should use of_get_mac_address(). of_get_mac_address_mtd is not
  available for drivers anymore since it's called automatically within
  of_get_mac_address().
- 0028-NET-lantiq-various-etop-fixes.patch
  Same changes as in 0025-NET-MIPS-lantiq-adds-xrx200-net.patch

While refreshing the kernel configuration SPI support had to be moved to
config-4.4 because otherwise M25P80 was disabled.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@48307 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 55 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches-4.4/0016-MTD-lantiq-xway-add-missing-write_buf-and-read_buf-t.patch b/target/linux/lantiq/patches-4.4/0016-MTD-lantiq-xway-add-missing-write_buf-and-read_buf-t.patch
new file mode 100644
index 0000000000..072caf6696
--- /dev/null
+++ b/target/linux/lantiq/patches-4.4/0016-MTD-lantiq-xway-add-missing-write_buf-and-read_buf-t.patch
@@ -0,0 +1,55 @@
+From 65df9d63eaee02c25e879b33dd42aceb78e57842 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Sun, 28 Jul 2013 17:59:51 +0200
+Subject: [PATCH 16/36] MTD: lantiq: xway: add missing write_buf and read_buf
+ to nand driver
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/mtd/nand/xway_nand.c |   28 ++++++++++++++++++++++++++++
+ 1 file changed, 28 insertions(+)
+
+--- a/drivers/mtd/nand/xway_nand.c
++++ b/drivers/mtd/nand/xway_nand.c
+@@ -136,6 +136,32 @@ static unsigned char xway_read_byte(stru
+ 	return ret;
+ }
+ 
++static void xway_read_buf(struct mtd_info *mtd, u_char *buf, int len)
++{
++	struct nand_chip *this = mtd->priv;
++	unsigned long nandaddr = (unsigned long) this->IO_ADDR_R;
++	unsigned long flags;
++	int i;
++
++	spin_lock_irqsave(&ebu_lock, flags);
++	for (i = 0; i < len; i++)
++		buf[i] = ltq_r8((void __iomem *)(nandaddr | NAND_READ_DATA));
++	spin_unlock_irqrestore(&ebu_lock, flags);
++}
++
++static void xway_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
++{
++	struct nand_chip *this = mtd->priv;
++	unsigned long nandaddr = (unsigned long) this->IO_ADDR_W;
++	unsigned long flags;
++	int i;
++
++	spin_lock_irqsave(&ebu_lock, flags);
++	for (i = 0; i < len; i++)
++		ltq_w8(buf[i], (void __iomem *)(nandaddr | NAND_WRITE_DATA));
++	spin_unlock_irqrestore(&ebu_lock, flags);
++}
++
+ static int xway_nand_probe(struct platform_device *pdev)
+ {
+ 	struct nand_chip *this = platform_get_drvdata(pdev);
+@@ -177,6 +203,8 @@ static struct platform_nand_data xway_na
+ 		.dev_ready	= xway_dev_ready,
+ 		.select_chip	= xway_select_chip,
+ 		.read_byte	= xway_read_byte,
++		.read_buf	= xway_read_buf,
++		.write_buf	= xway_write_buf,
+ 	}
+ };
+