| Message ID | 1465564043-27163-13-git-send-email-rogerq@ti.com |
|---|---|
| State | New |
| Headers | show |
+Alan On 10/06/16 16:07, Roger Quadros wrote: > Introduce usb_otg_add/remove_hcd() for use by host > controllers that are part of OTG/dual-role port. > > Non device tree platforms can use the otg_dev argument > to specify the OTG controller device. If otg_dev is NULL > then the device tree node's otg-controller property is used to > get the otg_dev device. > > Signed-off-by: Roger Quadros <rogerq@ti.com> > Acked-by: Peter Chen <peter.chen@nxp.com> > --- > drivers/usb/core/hcd.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++ > include/linux/usb/hcd.h | 4 ++++ > 2 files changed, 59 insertions(+) > > diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c > index ae6c76d..c6f4155 100644 > --- a/drivers/usb/core/hcd.c > +++ b/drivers/usb/core/hcd.c > @@ -46,6 +46,11 @@ > #include <linux/usb.h> > #include <linux/usb/hcd.h> > #include <linux/usb/phy.h> > +#include <linux/usb/otg.h> > +#include <linux/usb/of.h> > + > +#include <linux/of.h> > +#include <linux/of_platform.h> > > #include "usb.h" > > @@ -3025,6 +3030,56 @@ void usb_remove_hcd(struct usb_hcd *hcd) > } > EXPORT_SYMBOL_GPL(usb_remove_hcd); > > +static struct otg_hcd_ops otg_hcd_intf = { > + .add = usb_add_hcd, > + .remove = usb_remove_hcd, > + .usb_bus_start_enum = usb_bus_start_enum, > + .usb_control_msg = usb_control_msg, > + .usb_hub_find_child = usb_hub_find_child, > +}; > + > +/** > + * usb_otg_add_hcd - Register the HCD with OTG core. > + * @hcd: the usb_hcd structure to initialize > + * @irqnum: Interrupt line to allocate > + * @irqflags: Interrupt type flags > + * @otg_dev: OTG controller device managing this HCD > + * > + * Registers the HCD with OTG core. OTG core will call usb_add_hcd() > + * or usb_remove_hcd() as necessary. > + * If otg_dev is NULL then device tree node is checked for OTG > + * controller device via the otg-controller property. > + */ > +int usb_otg_add_hcd(struct usb_hcd *hcd, > + unsigned int irqnum, unsigned long irqflags, > + struct device *otg_dev) > +{ > + struct device *dev = hcd->self.controller; > + > + if (!otg_dev) { > + hcd->otg_dev = of_usb_get_otg(dev->of_node); > + if (!hcd->otg_dev) > + return -ENODEV; > + } else { > + hcd->otg_dev = otg_dev; > + } > + > + return usb_otg_register_hcd(hcd, irqnum, irqflags, &otg_hcd_intf); > +} > +EXPORT_SYMBOL_GPL(usb_otg_add_hcd); > + > +/** > + * usb_otg_remove_hcd - Unregister the HCD with OTG core. > + * @hcd: the usb_hcd structure to remove > + * > + * Unregisters the HCD from the OTG core. > + */ > +void usb_otg_remove_hcd(struct usb_hcd *hcd) > +{ > + usb_otg_unregister_hcd(hcd); > +} > +EXPORT_SYMBOL_GPL(usb_otg_remove_hcd); > + > void > usb_hcd_platform_shutdown(struct platform_device *dev) > { > diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h > index 36bd54f..0c70282 100644 > --- a/include/linux/usb/hcd.h > +++ b/include/linux/usb/hcd.h > @@ -473,6 +473,10 @@ extern int usb_hcd_is_primary_hcd(struct usb_hcd *hcd); > extern int usb_add_hcd(struct usb_hcd *hcd, > unsigned int irqnum, unsigned long irqflags); > extern void usb_remove_hcd(struct usb_hcd *hcd); > +extern int usb_otg_add_hcd(struct usb_hcd *hcd, > + unsigned int irqnum, unsigned long irqflags, > + struct device *otg_dev); > +extern void usb_otg_remove_hcd(struct usb_hcd *hcd); > extern int usb_hcd_find_raw_port_number(struct usb_hcd *hcd, int port1); > > struct platform_device; > -- cheers, -roger
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index ae6c76d..c6f4155 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -46,6 +46,11 @@ #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/usb/phy.h> +#include <linux/usb/otg.h> +#include <linux/usb/of.h> + +#include <linux/of.h> +#include <linux/of_platform.h> #include "usb.h" @@ -3025,6 +3030,56 @@ void usb_remove_hcd(struct usb_hcd *hcd) } EXPORT_SYMBOL_GPL(usb_remove_hcd); +static struct otg_hcd_ops otg_hcd_intf = { + .add = usb_add_hcd, + .remove = usb_remove_hcd, + .usb_bus_start_enum = usb_bus_start_enum, + .usb_control_msg = usb_control_msg, + .usb_hub_find_child = usb_hub_find_child, +}; + +/** + * usb_otg_add_hcd - Register the HCD with OTG core. + * @hcd: the usb_hcd structure to initialize + * @irqnum: Interrupt line to allocate + * @irqflags: Interrupt type flags + * @otg_dev: OTG controller device managing this HCD + * + * Registers the HCD with OTG core. OTG core will call usb_add_hcd() + * or usb_remove_hcd() as necessary. + * If otg_dev is NULL then device tree node is checked for OTG + * controller device via the otg-controller property. + */ +int usb_otg_add_hcd(struct usb_hcd *hcd, + unsigned int irqnum, unsigned long irqflags, + struct device *otg_dev) +{ + struct device *dev = hcd->self.controller; + + if (!otg_dev) { + hcd->otg_dev = of_usb_get_otg(dev->of_node); + if (!hcd->otg_dev) + return -ENODEV; + } else { + hcd->otg_dev = otg_dev; + } + + return usb_otg_register_hcd(hcd, irqnum, irqflags, &otg_hcd_intf); +} +EXPORT_SYMBOL_GPL(usb_otg_add_hcd); + +/** + * usb_otg_remove_hcd - Unregister the HCD with OTG core. + * @hcd: the usb_hcd structure to remove + * + * Unregisters the HCD from the OTG core. + */ +void usb_otg_remove_hcd(struct usb_hcd *hcd) +{ + usb_otg_unregister_hcd(hcd); +} +EXPORT_SYMBOL_GPL(usb_otg_remove_hcd); + void usb_hcd_platform_shutdown(struct platform_device *dev) { diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 36bd54f..0c70282 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -473,6 +473,10 @@ extern int usb_hcd_is_primary_hcd(struct usb_hcd *hcd); extern int usb_add_hcd(struct usb_hcd *hcd, unsigned int irqnum, unsigned long irqflags); extern void usb_remove_hcd(struct usb_hcd *hcd); +extern int usb_otg_add_hcd(struct usb_hcd *hcd, + unsigned int irqnum, unsigned long irqflags, + struct device *otg_dev); +extern void usb_otg_remove_hcd(struct usb_hcd *hcd); extern int usb_hcd_find_raw_port_number(struct usb_hcd *hcd, int port1); struct platform_device;