Hi, On Mon, 8 Jun 2015 23:02:01 +0800 Li Jun <[email protected]> wrote:
> Check property of usb hardware to get otg version and if SRP, HNP and ADP > are supported. > > Signed-off-by: Li Jun <[email protected]> > --- > 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 This is not really about otg controller supporting SRP but whether the DT user wants it enabled or not. IMO this function should be named of_usb_get_otg_srp_enable() > + * @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) how about of_usb_get_otg_rev()? > +{ > + 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 > cheers, -roger -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
