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authorJohn Crispin <john@openwrt.org>2015-03-11 17:08:08 +0000
committerJohn Crispin <john@openwrt.org>2015-03-11 17:08:08 +0000
commit2ddcf4c46ec9c31a65e6ccc7bef92622a700d420 (patch)
tree5c58fea27f4484b6bd06fd96188dad200b041617
parenta23da431dcb41b02bb59f0d31870d96b9ee40208 (diff)
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lantiq: Configure gpio power output pin when initializing dwc2 usb
Port gpio code from original ltq-hcd driver to dwc2. Signed-off-by: Antti Seppälä <a.seppala@gmail.com> Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com> SVN-Revision: 44673
-rw-r--r--target/linux/lantiq/patches-3.18/0040-USB-DWC2-enable-usb-power-gpio.patch35
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;