Check property of usb hardware to get otg version and if SRP, HNP and ADP are supported. Signed-off-by: Li Jun <jun.li@xxxxxxxxxxxxx> --- drivers/usb/common/common.c | 64 +++++++++++++++++++++++++++++++++++++++++++++ include/linux/usb/of.h | 20 ++++++++++++++ 2 files changed, 84 insertions(+) diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c index b530fd4..7b0594b 100644 --- a/drivers/usb/common/common.c +++ b/drivers/usb/common/common.c @@ -154,6 +154,70 @@ 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 supports 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 supports 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 supports 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); + +/** + * of_usb_otg_rev_number - to get the otg release number the device is + * compliant with. + * @np: Pointer to the given device_node + * + * The function gets OTG and EH supplement release number in binary-coded + * decimal (i.e. 2.0 is 0200H). + */ +int of_usb_otg_rev_number(struct device_node *np) +{ + u32 otg_rev; + + if (!of_property_read_u32(np, "otg-rev", &otg_rev)) + return otg_rev; + + return 0; +} +EXPORT_SYMBOL_GPL(of_usb_otg_rev_number); #endif MODULE_LICENSE("GPL"); diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h index cfe0528..9a3e82a 100644 --- a/include/linux/usb/of.h +++ b/include/linux/usb/of.h @@ -15,6 +15,10 @@ 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); +int of_usb_otg_rev_number(struct device_node *np); #else static inline enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np) { @@ -30,6 +34,22 @@ 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; +} +static inline int of_usb_otg_rev_number(struct device_node *np) +{ + return 0; +} #endif #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_SUPPORT) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html