You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.6 KiB
62 lines
1.6 KiB
Subject: [PATCH] bcma-hcd: add support for controlling bus power through GPIO
|
|
|
|
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
|
|
---
|
|
--- a/drivers/usb/host/bcma-hcd.c
|
|
+++ b/drivers/usb/host/bcma-hcd.c
|
|
@@ -23,6 +23,8 @@
|
|
#include <linux/platform_device.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
+#include <linux/of.h>
|
|
+#include <linux/of_gpio.h>
|
|
#include <linux/usb/ehci_pdriver.h>
|
|
#include <linux/usb/ohci_pdriver.h>
|
|
|
|
@@ -205,7 +207,38 @@ static void bcma_hcd_init_chip_arm(struc
|
|
iounmap(dmu);
|
|
}
|
|
|
|
+static void bcma_hci_platform_power_gpio(struct platform_device *dev, bool val)
|
|
+{
|
|
+ int gpio;
|
|
+
|
|
+ gpio = of_get_named_gpio(dev->dev.of_node, "vcc-gpio", 0);
|
|
+ if (!gpio_is_valid(gpio))
|
|
+ return;
|
|
+
|
|
+ if (val) {
|
|
+ gpio_request(gpio, "bcma-hcd-gpio");
|
|
+ gpio_set_value(gpio, 1);
|
|
+ } else {
|
|
+ gpio_set_value(gpio, 0);
|
|
+ gpio_free(gpio);
|
|
+ }
|
|
+}
|
|
+
|
|
+static int bcma_hci_platform_power_on(struct platform_device *dev)
|
|
+{
|
|
+ bcma_hci_platform_power_gpio(dev, true);
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void bcma_hci_platform_power_off(struct platform_device *dev)
|
|
+{
|
|
+ bcma_hci_platform_power_gpio(dev, false);
|
|
+}
|
|
+
|
|
static const struct usb_ehci_pdata ehci_pdata = {
|
|
+ .power_on = bcma_hci_platform_power_on,
|
|
+ .power_suspend = bcma_hci_platform_power_off,
|
|
+ .power_off = bcma_hci_platform_power_off,
|
|
};
|
|
|
|
static const struct usb_ohci_pdata ohci_pdata = {
|
|
@@ -233,6 +266,7 @@ static struct platform_device *bcma_hcd_
|
|
|
|
hci_dev->dev.parent = &dev->dev;
|
|
hci_dev->dev.dma_mask = &hci_dev->dev.coherent_dma_mask;
|
|
+ hci_dev->dev.of_node = dev->dev.of_node;
|
|
|
|
ret = platform_device_add_resources(hci_dev, hci_res,
|
|
ARRAY_SIZE(hci_res));
|
|
|