From mboxrd@z Thu Jan 1 00:00:00 1970 From: Li Jun Subject: [PATCH v3 06/22] usb: common: add API to get usb otg features from device tree Date: Tue, 16 Jun 2015 14:51:56 +0800 Message-ID: <1434437532-23678-7-git-send-email-jun.li@freescale.com> References: <1434437532-23678-1-git-send-email-jun.li@freescale.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1434437532-23678-1-git-send-email-jun.li-KZfg59tc24xl57MIdRCFDg@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, balbi-l0cyMroinI0@public.gmane.org, peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, macpaul-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, rogerq-l0cyMroinI0@public.gmane.org, Li Jun List-Id: devicetree@vger.kernel.org Check property of usb hardware to get otg version and if SRP, HNP and ADP are supported. Signed-off-by: Li Jun --- 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..b882e95 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_disabled - to get if otg srp is disabled for the device + * @np: Pointer to the given device_node + * + * The function gets if SRP is disabled on the otg port + */ +bool of_usb_otg_srp_disabled(struct device_node *np) +{ + if (of_find_property(np, "srp-disable", NULL)) + return true; + + return false; +} +EXPORT_SYMBOL_GPL(of_usb_otg_srp_disabled); + +/** + * of_usb_otg_hnp_disabled - to get if otg hnp is disabled for the device + * @np: Pointer to the given device_node + * + * The function gets if HNP is disabled on the otg port + */ +bool of_usb_otg_hnp_disabled(struct device_node *np) +{ + if (of_find_property(np, "hnp-disable", NULL)) + return true; + + return false; +} +EXPORT_SYMBOL_GPL(of_usb_otg_hnp_disabled); + +/** + * of_usb_otg_adp_disabled - to get if otg adp is disabled for the device + * @np: Pointer to the given device_node + * + * The function gets if ADP is disabled on the otg port + */ +bool of_usb_otg_adp_disabled(struct device_node *np) +{ + if (of_find_property(np, "adp-disable", NULL)) + return true; + + return false; +} +EXPORT_SYMBOL_GPL(of_usb_otg_adp_disabled); + +/** + * of_usb_get_otg_rev - 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_get_otg_rev(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_get_otg_rev); #endif MODULE_LICENSE("GPL"); diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h index cfe0528..5b395bf 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_disabled(struct device_node *np); +bool of_usb_otg_hnp_disabled(struct device_node *np); +bool of_usb_otg_adp_disabled(struct device_node *np); +int of_usb_get_otg_rev(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_disabled(struct device_node *np) +{ + return false; +} +static inline bool of_usb_otg_hnp_disabled(struct device_node *np) +{ + return false; +} +static inline bool of_usb_otg_adp_disabled(struct device_node *np) +{ + return false; +} +static inline int of_usb_get_otg_rev(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 linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html