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-rw-r--r--include/linux/usb/phy.h139
1 files changed, 93 insertions, 46 deletions
diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
index 44036808bf0f..0fa9885a1038 100644
--- a/include/linux/usb/phy.h
+++ b/include/linux/usb/phy.h
@@ -1,5 +1,6 @@
-/* USB OTG (On The Go) defines */
+/* SPDX-License-Identifier: GPL-2.0 */
/*
+ * USB PHY defines
*
* These APIs may be used between USB controllers. USB device drivers
* (for either host or peripheral roles) don't use these calls; they
@@ -9,8 +10,10 @@
#ifndef __LINUX_USB_PHY_H
#define __LINUX_USB_PHY_H
+#include <linux/extcon.h>
#include <linux/notifier.h>
#include <linux/usb.h>
+#include <uapi/linux/usb/charger.h>
enum usb_phy_interface {
USBPHY_INTERFACE_MODE_UNKNOWN,
@@ -63,7 +66,7 @@ enum usb_otg_state {
struct usb_phy;
struct usb_otg;
-/* for transceivers connected thru an ULPI interface, the user must
+/* for phys connected thru an ULPI interface, the user must
* provide access ops
*/
struct usb_phy_io_ops {
@@ -71,13 +74,23 @@ struct usb_phy_io_ops {
int (*write)(struct usb_phy *x, u32 val, u32 reg);
};
+struct usb_charger_current {
+ unsigned int sdp_min;
+ unsigned int sdp_max;
+ unsigned int dcp_min;
+ unsigned int dcp_max;
+ unsigned int cdp_min;
+ unsigned int cdp_max;
+ unsigned int aca_min;
+ unsigned int aca_max;
+};
+
struct usb_phy {
struct device *dev;
const char *label;
unsigned int flags;
enum usb_phy_type type;
- enum usb_otg_state state;
enum usb_phy_events last_event;
struct usb_otg *otg;
@@ -86,6 +99,19 @@ struct usb_phy {
struct usb_phy_io_ops *io_ops;
void __iomem *io_priv;
+ /* to support extcon device */
+ struct extcon_dev *edev;
+ struct extcon_dev *id_edev;
+ struct notifier_block vbus_nb;
+ struct notifier_block id_nb;
+ struct notifier_block type_nb;
+
+ /* Support USB charger */
+ enum usb_charger_type chg_type;
+ enum usb_charger_state chg_state;
+ struct usb_charger_current chg_cur;
+ struct work_struct chg_work;
+
/* for notification of usb_phy_events */
struct atomic_notifier_head notifier;
@@ -93,10 +119,10 @@ struct usb_phy {
u16 port_status;
u16 port_change;
- /* to support controllers that have multiple transceivers */
+ /* to support controllers that have multiple phys */
struct list_head head;
- /* initialize/shutdown the OTG controller */
+ /* initialize/shutdown the phy */
int (*init)(struct usb_phy *x);
void (*shutdown)(struct usb_phy *x);
@@ -107,31 +133,28 @@ struct usb_phy {
int (*set_power)(struct usb_phy *x,
unsigned mA);
- /* for non-OTG B devices: set transceiver into suspend mode */
+ /* Set phy into suspend mode */
int (*set_suspend)(struct usb_phy *x,
int suspend);
+ /*
+ * Set wakeup enable for PHY, in that case, the PHY can be
+ * woken up from suspend status due to external events,
+ * like vbus change, dp/dm change and id.
+ */
+ int (*set_wakeup)(struct usb_phy *x, bool enabled);
+
/* notify phy connect status change */
int (*notify_connect)(struct usb_phy *x,
enum usb_device_speed speed);
int (*notify_disconnect)(struct usb_phy *x,
enum usb_device_speed speed);
-};
-/**
- * struct usb_phy_bind - represent the binding for the phy
- * @dev_name: the device name of the device that will bind to the phy
- * @phy_dev_name: the device name of the phy
- * @index: used if a single controller uses multiple phys
- * @phy: reference to the phy
- * @list: to maintain a linked list of the binding information
- */
-struct usb_phy_bind {
- const char *dev_name;
- const char *phy_dev_name;
- u8 index;
- struct usb_phy *phy;
- struct list_head list;
+ /*
+ * Charger detection method can be implemented if you need to
+ * manually detect the charger type.
+ */
+ enum usb_charger_type (*charger_detect)(struct usb_phy *x);
};
/* for board-specific init logic */
@@ -142,7 +165,7 @@ extern void usb_remove_phy(struct usb_phy *);
/* helpers for direct access thru low-level io interface */
static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
{
- if (x->io_ops && x->io_ops->read)
+ if (x && x->io_ops && x->io_ops->read)
return x->io_ops->read(x, reg);
return -EINVAL;
@@ -150,7 +173,7 @@ static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
static inline int usb_phy_io_write(struct usb_phy *x, u32 val, u32 reg)
{
- if (x->io_ops && x->io_ops->write)
+ if (x && x->io_ops && x->io_ops->write)
return x->io_ops->write(x, val, reg);
return -EINVAL;
@@ -159,7 +182,7 @@ static inline int usb_phy_io_write(struct usb_phy *x, u32 val, u32 reg)
static inline int
usb_phy_init(struct usb_phy *x)
{
- if (x->init)
+ if (x && x->init)
return x->init(x);
return 0;
@@ -168,14 +191,14 @@ usb_phy_init(struct usb_phy *x)
static inline void
usb_phy_shutdown(struct usb_phy *x)
{
- if (x->shutdown)
+ if (x && x->shutdown)
x->shutdown(x);
}
static inline int
usb_phy_vbus_on(struct usb_phy *x)
{
- if (!x->set_vbus)
+ if (!x || !x->set_vbus)
return 0;
return x->set_vbus(x, true);
@@ -184,7 +207,7 @@ usb_phy_vbus_on(struct usb_phy *x)
static inline int
usb_phy_vbus_off(struct usb_phy *x)
{
- if (!x->set_vbus)
+ if (!x || !x->set_vbus)
return 0;
return x->set_vbus(x, false);
@@ -195,14 +218,18 @@ usb_phy_vbus_off(struct usb_phy *x)
extern struct usb_phy *usb_get_phy(enum usb_phy_type type);
extern struct usb_phy *devm_usb_get_phy(struct device *dev,
enum usb_phy_type type);
-extern struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index);
-extern struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index);
extern struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
const char *phandle, u8 index);
+extern struct usb_phy *devm_usb_get_phy_by_node(struct device *dev,
+ struct device_node *node, struct notifier_block *nb);
extern void usb_put_phy(struct usb_phy *);
-extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x);
-extern int usb_bind_phy(const char *dev_name, u8 index,
- const char *phy_dev_name);
+extern void usb_phy_set_event(struct usb_phy *x, unsigned long event);
+extern void usb_phy_set_charger_current(struct usb_phy *usb_phy,
+ unsigned int mA);
+extern void usb_phy_get_charger_current(struct usb_phy *usb_phy,
+ unsigned int *min, unsigned int *max);
+extern void usb_phy_set_charger_state(struct usb_phy *usb_phy,
+ enum usb_charger_state state);
#else
static inline struct usb_phy *usb_get_phy(enum usb_phy_type type)
{
@@ -215,41 +242,52 @@ static inline struct usb_phy *devm_usb_get_phy(struct device *dev,
return ERR_PTR(-ENXIO);
}
-static inline struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index)
+static inline struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
+ const char *phandle, u8 index)
{
return ERR_PTR(-ENXIO);
}
-static inline struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index)
+static inline struct usb_phy *devm_usb_get_phy_by_node(struct device *dev,
+ struct device_node *node, struct notifier_block *nb)
{
return ERR_PTR(-ENXIO);
}
-static inline struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
- const char *phandle, u8 index)
+static inline void usb_put_phy(struct usb_phy *x)
{
- return ERR_PTR(-ENXIO);
}
-static inline void usb_put_phy(struct usb_phy *x)
+static inline void usb_phy_set_event(struct usb_phy *x, unsigned long event)
+{
+}
+
+static inline void usb_phy_set_charger_current(struct usb_phy *usb_phy,
+ unsigned int mA)
{
}
-static inline void devm_usb_put_phy(struct device *dev, struct usb_phy *x)
+static inline void usb_phy_get_charger_current(struct usb_phy *usb_phy,
+ unsigned int *min,
+ unsigned int *max)
{
}
-static inline int usb_bind_phy(const char *dev_name, u8 index,
- const char *phy_dev_name)
+static inline void usb_phy_set_charger_state(struct usb_phy *usb_phy,
+ enum usb_charger_state state)
{
- return -EOPNOTSUPP;
}
#endif
static inline int
usb_phy_set_power(struct usb_phy *x, unsigned mA)
{
- if (x && x->set_power)
+ if (!x)
+ return 0;
+
+ usb_phy_set_charger_current(x, mA);
+
+ if (x->set_power)
return x->set_power(x, mA);
return 0;
}
@@ -258,16 +296,25 @@ usb_phy_set_power(struct usb_phy *x, unsigned mA)
static inline int
usb_phy_set_suspend(struct usb_phy *x, int suspend)
{
- if (x->set_suspend != NULL)
+ if (x && x->set_suspend != NULL)
return x->set_suspend(x, suspend);
else
return 0;
}
static inline int
+usb_phy_set_wakeup(struct usb_phy *x, bool enabled)
+{
+ if (x && x->set_wakeup)
+ return x->set_wakeup(x, enabled);
+ else
+ return 0;
+}
+
+static inline int
usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed)
{
- if (x->notify_connect)
+ if (x && x->notify_connect)
return x->notify_connect(x, speed);
else
return 0;
@@ -276,7 +323,7 @@ usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed)
static inline int
usb_phy_notify_disconnect(struct usb_phy *x, enum usb_device_speed speed)
{
- if (x->notify_disconnect)
+ if (x && x->notify_disconnect)
return x->notify_disconnect(x, speed);
else
return 0;
generated by cgit (git 2.34.1) at 2025-12-21 21:11:29 +0000