diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-3.18/191-bcma_hcd_add_gpio_power_control.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-3.18/191-bcma_hcd_add_gpio_power_control.patch | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-3.18/191-bcma_hcd_add_gpio_power_control.patch b/target/linux/bcm53xx/patches-3.18/191-bcma_hcd_add_gpio_power_control.patch new file mode 100644 index 0000000000..9c45556ec9 --- /dev/null +++ b/target/linux/bcm53xx/patches-3.18/191-bcma_hcd_add_gpio_power_control.patch @@ -0,0 +1,62 @@ +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)); |