diff options
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/hcd.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 2c56252b9ff8..b84fb141e122 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -42,6 +42,7 @@ #include <linux/pm_runtime.h> #include <linux/types.h> +#include <linux/phy/phy.h> #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/usb/phy.h> @@ -2647,6 +2648,29 @@ int usb_add_hcd(struct usb_hcd *hcd, } } + if (IS_ENABLED(CONFIG_GENERIC_PHY)) { + struct phy *phy = phy_get(hcd->self.controller, "usb"); + + if (IS_ERR(phy)) { + retval = PTR_ERR(phy); + if (retval == -EPROBE_DEFER) + goto err_phy; + } else { + retval = phy_init(phy); + if (retval) { + phy_put(phy); + goto err_phy; + } + retval = phy_power_on(phy); + if (retval) { + phy_exit(phy); + phy_put(phy); + goto err_phy; + } + hcd->phy = phy; + } + } + dev_info(hcd->self.controller, "%s\n", hcd->product_desc); /* Keep old behaviour if authorized_default is not in [0, 1]. */ @@ -2662,7 +2686,7 @@ int usb_add_hcd(struct usb_hcd *hcd, */ if ((retval = hcd_buffer_create(hcd)) != 0) { dev_dbg(hcd->self.controller, "pool alloc failed\n"); - goto err_remove_phy; + goto err_create_buf; } if ((retval = usb_register_bus(&hcd->self)) < 0) @@ -2789,7 +2813,14 @@ err_allocate_root_hub: usb_deregister_bus(&hcd->self); err_register_bus: hcd_buffer_destroy(hcd); -err_remove_phy: +err_create_buf: + if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->phy) { + phy_power_off(hcd->phy); + phy_exit(hcd->phy); + phy_put(hcd->phy); + hcd->phy = NULL; + } +err_phy: if (hcd->remove_phy && hcd->usb_phy) { usb_phy_shutdown(hcd->usb_phy); usb_put_phy(hcd->usb_phy); @@ -2866,6 +2897,13 @@ void usb_remove_hcd(struct usb_hcd *hcd) usb_deregister_bus(&hcd->self); hcd_buffer_destroy(hcd); + + if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->phy) { + phy_power_off(hcd->phy); + phy_exit(hcd->phy); + phy_put(hcd->phy); + hcd->phy = NULL; + } if (hcd->remove_phy && hcd->usb_phy) { usb_phy_shutdown(hcd->usb_phy); usb_put_phy(hcd->usb_phy); |
