diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.18/0040-USB-DWC2-enable-usb-power-gpio.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.18/0040-USB-DWC2-enable-usb-power-gpio.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.18/0040-USB-DWC2-enable-usb-power-gpio.patch b/target/linux/lantiq/patches-3.18/0040-USB-DWC2-enable-usb-power-gpio.patch new file mode 100644 index 0000000000..4e51d3ee5e --- /dev/null +++ b/target/linux/lantiq/patches-3.18/0040-USB-DWC2-enable-usb-power-gpio.patch @@ -0,0 +1,35 @@ +--- a/drivers/usb/dwc2/platform.c 2015-02-06 16:53:48.000000000 +0200 ++++ b/drivers/usb/dwc2/platform.c 2015-02-09 19:22:41.974089626 +0200 +@@ -40,6 +40,7 @@ + #include <linux/device.h> + #include <linux/dma-mapping.h> + #include <linux/of_device.h> ++#include <linux/of_gpio.h> + #include <linux/platform_device.h> + + #include <linux/usb/of.h> +@@ -154,6 +155,7 @@ + struct resource *res; + int retval; + int irq; ++ int gpio_count; + + if (usb_disabled()) + return -ENODEV; +@@ -173,6 +175,16 @@ + 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; |