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>

SVN-Revision: 48307

1 files changed, 35 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches-4.4/0040-USB-DWC2-enable-usb-power-gpio.patch b/target/linux/lantiq/patches-4.4/0040-USB-DWC2-enable-usb-power-gpio.patch
new file mode 100644
index 0000000000..5f26784621
--- /dev/null
+++ b/target/linux/lantiq/patches-4.4/0040-USB-DWC2-enable-usb-power-gpio.patch
@@ -0,0 +1,35 @@
+--- a/drivers/usb/dwc2/platform.c
++++ b/drivers/usb/dwc2/platform.c
+@@ -42,6 +42,7 @@
+ #include <linux/dma-mapping.h>
+ #include <linux/of_device.h>
+ #include <linux/mutex.h>
++#include <linux/of_gpio.h>
+ #include <linux/platform_device.h>
+ #include <linux/phy/phy.h>
+ #include <linux/platform_data/s3c-hsotg.h>
+@@ -336,6 +337,7 @@ static int dwc2_driver_probe(struct plat
+ 	struct resource *res;
+ 	int retval;
+ 	int irq;
++	int gpio_count;
+ 
+ 	match = of_match_device(dwc2_of_match_table, &dev->dev);
+ 	if (match && match->data) {
+@@ -352,6 +354,16 @@ static int dwc2_driver_probe(struct plat
+ 		defparams.dma_desc_enable = 0;
+ 	}
+ 
++	gpio_count = of_gpio_count(dev->dev.of_node);
++	while (gpio_count > 0) {
++		enum of_gpio_flags flags;
++		int gpio = of_get_gpio_flags(dev->dev.of_node, --gpio_count, &flags);
++		if (gpio_request(gpio, "usb"))
++			continue;
++		dev_info(&dev->dev, "requested GPIO %d\n", gpio);
++		gpio_direction_output(gpio, (flags & OF_GPIO_ACTIVE_LOW) ? (0) : (1));
++	}
++
+ 	hsotg = devm_kzalloc(&dev->dev, sizeof(*hsotg), GFP_KERNEL);
+ 	if (!hsotg)
+ 		return -ENOMEM;