@@ -2794,10 +2794,16 @@ int usb_add_hcd(struct usb_hcd *hcd,
struct usb_device *rhdev;
struct usb_hcd *shared_hcd;
- if (!hcd->skip_phy_initialization && usb_hcd_is_primary_hcd(hcd)) {
- hcd->phy_roothub = usb_phy_roothub_alloc(hcd->self.sysdev);
- if (IS_ERR(hcd->phy_roothub))
- return PTR_ERR(hcd->phy_roothub);
+ if (!hcd->skip_phy_initialization) {
+ if (usb_hcd_is_primary_hcd(hcd)) {
+ hcd->phy_roothub = usb_phy_roothub_alloc(hcd->self.sysdev);
+ if (IS_ERR(hcd->phy_roothub))
+ return PTR_ERR(hcd->phy_roothub);
+ } else {
+ hcd->phy_roothub = usb_phy_roothub_alloc_usb3_phy(hcd->self.sysdev);
+ if (IS_ERR(hcd->phy_roothub))
+ return PTR_ERR(hcd->phy_roothub);
+ }
retval = usb_phy_roothub_init(hcd->phy_roothub);
if (retval)
@@ -37,6 +37,7 @@
#include <asm/byteorder.h>
#include "hub.h"
+#include "phy.h"
#include "otg_productlist.h"
#define USB_VENDOR_GENESYS_LOGIC 0x05e3
@@ -632,16 +633,21 @@ static int hub_ext_port_status(struct usb_hub *hub, int port1, int type,
struct usb_device *hdev = hub->hdev;
/*
- * Only roothub will be notified of port state changes,
+ * Only roothub will be notified of connection changes,
* since the USB PHY only cares about changes at the next
* level.
*/
if (is_root_hub(hdev)) {
struct usb_hcd *hcd = bus_to_hcd(hdev->bus);
-
- if (hcd->usb_phy)
- usb_phy_notify_port_status(hcd->usb_phy,
- port1 - 1, *status, *change);
+ bool connect;
+ bool connect_change;
+
+ connect_change = *change & USB_PORT_STAT_C_CONNECTION;
+ connect = *status & USB_PORT_STAT_CONNECTION;
+ if (connect_change && connect)
+ usb_phy_roothub_notify_connect(hcd->phy_roothub, port1 - 1);
+ else if (connect_change)
+ usb_phy_roothub_notify_disconnect(hcd->phy_roothub, port1 - 1);
}
}
@@ -19,6 +19,29 @@ struct usb_phy_roothub {
struct list_head list;
};
+static int usb_phy_roothub_add_phy_by_name(struct device *dev, const char *name,
+ struct list_head *list)
+{
+ struct usb_phy_roothub *roothub_entry;
+ struct phy *phy;
+
+ phy = devm_of_phy_get(dev, dev->of_node, name);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+
+ roothub_entry = devm_kzalloc(dev, sizeof(*roothub_entry), GFP_KERNEL);
+ if (!roothub_entry)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&roothub_entry->list);
+
+ roothub_entry->phy = phy;
+
+ list_add_tail(&roothub_entry->list, list);
+
+ return 0;
+}
+
static int usb_phy_roothub_add_phy(struct device *dev, int index,
struct list_head *list)
{
@@ -65,6 +88,9 @@ struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev)
INIT_LIST_HEAD(&phy_roothub->list);
+ if (!usb_phy_roothub_add_phy_by_name(dev, "usb2-phy", &phy_roothub->list))
+ return phy_roothub;
+
for (i = 0; i < num_phys; i++) {
err = usb_phy_roothub_add_phy(dev, i, &phy_roothub->list);
if (err)
@@ -75,6 +101,32 @@ struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev)
}
EXPORT_SYMBOL_GPL(usb_phy_roothub_alloc);
+struct usb_phy_roothub *usb_phy_roothub_alloc_usb3_phy(struct device *dev)
+{
+ struct usb_phy_roothub *phy_roothub;
+ int num_phys;
+
+ if (!IS_ENABLED(CONFIG_GENERIC_PHY))
+ return NULL;
+
+ num_phys = of_count_phandle_with_args(dev->of_node, "phys",
+ "#phy-cells");
+ if (num_phys <= 0)
+ return NULL;
+
+ phy_roothub = devm_kzalloc(dev, sizeof(*phy_roothub), GFP_KERNEL);
+ if (!phy_roothub)
+ return ERR_PTR(-ENOMEM);
+
+ INIT_LIST_HEAD(&phy_roothub->list);
+
+ if (!usb_phy_roothub_add_phy_by_name(dev, "usb3-phy", &phy_roothub->list))
+ return phy_roothub;
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(usb_phy_roothub_alloc_usb3_phy);
+
int usb_phy_roothub_init(struct usb_phy_roothub *phy_roothub)
{
struct usb_phy_roothub *roothub_entry;
@@ -172,6 +224,48 @@ int usb_phy_roothub_calibrate(struct usb_phy_roothub *phy_roothub)
}
EXPORT_SYMBOL_GPL(usb_phy_roothub_calibrate);
+int usb_phy_roothub_notify_connect(struct usb_phy_roothub *phy_roothub, int port)
+{
+ struct usb_phy_roothub *roothub_entry;
+ struct list_head *head;
+ int err;
+
+ if (!phy_roothub)
+ return 0;
+
+ head = &phy_roothub->list;
+
+ list_for_each_entry(roothub_entry, head, list) {
+ err = phy_notify_connect(roothub_entry->phy, port);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(usb_phy_roothub_notify_connect);
+
+int usb_phy_roothub_notify_disconnect(struct usb_phy_roothub *phy_roothub, int port)
+{
+ struct usb_phy_roothub *roothub_entry;
+ struct list_head *head;
+ int err;
+
+ if (!phy_roothub)
+ return 0;
+
+ head = &phy_roothub->list;
+
+ list_for_each_entry(roothub_entry, head, list) {
+ err = phy_notify_disconnect(roothub_entry->phy, port);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(usb_phy_roothub_notify_disconnect);
+
int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub)
{
struct usb_phy_roothub *roothub_entry;
@@ -12,6 +12,7 @@ struct device;
struct usb_phy_roothub;
struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev);
+struct usb_phy_roothub *usb_phy_roothub_alloc_usb3_phy(struct device *dev);
int usb_phy_roothub_init(struct usb_phy_roothub *phy_roothub);
int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub);
@@ -19,6 +20,8 @@ int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub);
int usb_phy_roothub_set_mode(struct usb_phy_roothub *phy_roothub,
enum phy_mode mode);
int usb_phy_roothub_calibrate(struct usb_phy_roothub *phy_roothub);
+int usb_phy_roothub_notify_connect(struct usb_phy_roothub *phy_roothub, int port);
+int usb_phy_roothub_notify_disconnect(struct usb_phy_roothub *phy_roothub, int port);
int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub);
void usb_phy_roothub_power_off(struct usb_phy_roothub *phy_roothub);
@@ -144,10 +144,6 @@ struct usb_phy {
*/
int (*set_wakeup)(struct usb_phy *x, bool enabled);
- /* notify phy port status change */
- int (*notify_port_status)(struct usb_phy *x, int port,
- u16 portstatus, u16 portchange);
-
/* notify phy connect status change */
int (*notify_connect)(struct usb_phy *x,
enum usb_device_speed speed);
@@ -320,15 +316,6 @@ usb_phy_set_wakeup(struct usb_phy *x, bool enabled)
return 0;
}
-static inline int
-usb_phy_notify_port_status(struct usb_phy *x, int port, u16 portstatus, u16 portchange)
-{
- if (x && x->notify_port_status)
- return x->notify_port_status(x, port, portstatus, portchange);
- else
- return 0;
-}
-
static inline int
usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed)
{
Recently added Realtek PHY driver depends on new port status Notification mechanism built on the deprecated USB PHY implementation. It's broken by design. Therefore, USB port status notifications on legacy USB PHYs should be removed. New mechanism for connect and disconnect USB devices using to replace it on generic phy. Additionally, the generic phy only specifies primary_hcd in the original design. Added specific "usb2-phy" on primary_hcd and "usb3-phy" on shared_hcd. In Realtek SoC, the parameter of usb phy is designed to can dynamic tuning base on device connect and disconnect. Therefore, add a notify callback of generic phy driver when usb device connection change. Check if portstatus is USB_PORT_STAT_CONNECTION and portchange is USB_PORT_STAT_C_CONNECTION. 1. The device is connected, notify phy driver to calibrates the phy parameters. 2. The device disconnects, also notify driver to calibrates the phy parameters. Signed-off-by: Stanley Chang <stanley_chang@realtek.com> --- drivers/usb/core/hcd.c | 14 ++++-- drivers/usb/core/hub.c | 16 ++++--- drivers/usb/core/phy.c | 94 +++++++++++++++++++++++++++++++++++++++++ drivers/usb/core/phy.h | 3 ++ include/linux/usb/phy.h | 13 ------ 5 files changed, 118 insertions(+), 22 deletions(-)