Check property of usb hardware to get if SRP, HNP and ADP is supported.
Signed-off-by: Li Jun <[email protected]>
---
drivers/usb/common/common.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
include/linux/usb/of.h | 15 +++++++++++++++
2 files changed, 60 insertions(+)
diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c
index b530fd4..9944bee 100644
--- a/drivers/usb/common/common.c
+++ b/drivers/usb/common/common.c
@@ -154,6 +154,51 @@ bool of_usb_host_tpl_support(struct device_node *np)
return false;
}
EXPORT_SYMBOL_GPL(of_usb_host_tpl_support);
+
+/**
+ * of_usb_otg_srp_support - to get if otg srp is supported by the otg
controller
+ * @np: Pointer to the given device_node
+ *
+ * The function gets if the otg port support SRP
+ */
+bool of_usb_otg_srp_support(struct device_node *np)
+{
+ if (of_find_property(np, "srp-support", NULL))
+ return true;
+
+ return false;
+}
+EXPORT_SYMBOL_GPL(of_usb_otg_srp_support);
+
+/**
+ * of_usb_otg_hnp_support - to get if otg hnp is supported by the otg
controller
+ * @np: Pointer to the given device_node
+ *
+ * The function gets if the otg port support HNP
+ */
+bool of_usb_otg_hnp_support(struct device_node *np)
+{
+ if (of_find_property(np, "hnp-support", NULL))
+ return true;
+
+ return false;
+}
+EXPORT_SYMBOL_GPL(of_usb_otg_hnp_support);
+
+/**
+ * of_usb_otg_adp_support - to get if otg adp is supported by the otg
controller
+ * @np: Pointer to the given device_node
+ *
+ * The function gets if the otg port support ADP
+ */
+bool of_usb_otg_adp_support(struct device_node *np)
+{
+ if (of_find_property(np, "adp-support", NULL))
+ return true;
+
+ return false;
+}
+EXPORT_SYMBOL_GPL(of_usb_otg_adp_support);
#endif
MODULE_LICENSE("GPL");
diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h
index cfe0528..22f1ce2 100644
--- a/include/linux/usb/of.h
+++ b/include/linux/usb/of.h
@@ -15,6 +15,9 @@
enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np);
enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np);
bool of_usb_host_tpl_support(struct device_node *np);
+bool of_usb_otg_srp_support(struct device_node *np);
+bool of_usb_otg_hnp_support(struct device_node *np);
+bool of_usb_otg_adp_support(struct device_node *np);
#else
static inline enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np)
{
@@ -30,6 +33,18 @@ static inline bool of_usb_host_tpl_support(struct
device_node *np)
{
return false;
}
+static inline bool of_usb_otg_srp_support(struct device_node *np)
+{
+ return false;
+}
+static inline bool of_usb_otg_hnp_support(struct device_node *np)
+{
+ return false;
+}
+static inline bool of_usb_otg_adp_support(struct device_node *np)
+{
+ return false;
+}
#endif
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_SUPPORT)
--
1.9.1
--
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