1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -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 @@ static int dwc2_driver_probe(struct plat
struct resource *res;
int retval;
int irq;
+ int gpio_count;
if (usb_disabled())
return -ENODEV;
@@ -173,6 +175,16 @@ 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;
|
