diff options
| author | Sakethram Bommisetti <sakethram.bommisetti@stericsson.com> | 2011-01-25 16:10:30 +0530 |
|---|---|---|
| committer | Henrik Öhman <henrik.ohman@stericsson.com> | 2011-03-07 10:16:27 +0100 |
| commit | 29372ff1386b6d316a37b0a41a382a8c161f160f (patch) | |
| tree | f5ffc6a7ec115ae2f7deac5c91867b571e24e864 /include | |
| parent | 2bc9de64f8c94fe8fcf5aa4d3fe61a99efa533b6 (diff) | |
USB: gadget: OTG supplement revision 2.0 updates
Introduce otg_version field in usb_gadget struct.UDC can advertise
OTG spec version compatibility by setting otg_version field
appropriately. Gadget drivers fill the bcdOTG field in OTG
descriptor based on UDC's OTG version.
Add sysfs file for host_request and UDC returns the same when
HNP polling request arrives from the host.
Signed-off-by: Pavankumar Kondeti <pkondeti@...>
Change-Id: Ic5ea40369159c10e524a13a2d9b1722fb3ee6921
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/13421
Reviewed-by: Praveena NADAHALLY <praveen.nadahally@stericsson.com>
Tested-by: Praveena NADAHALLY <praveen.nadahally@stericsson.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/usb/gadget.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index d3ef42d7d2f..cffc247c5ba 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -443,6 +443,8 @@ struct usb_gadget_ops { * operation. If it does, the gadget driver must also support both. * @is_otg: True if the USB device port uses a Mini-AB jack, so that the * gadget driver must provide a USB OTG descriptor. + * @otg_version: UDC OTG version based on which gadget driver fills the + * bcdOTG field in a USB OTG descriptor. * @is_a_peripheral: False unless is_otg, the "A" end of a USB cable * is in the Mini-AB jack, and HNP has been used to switch roles * so that the "A" device currently acts as A-Peripheral, not A-Host. @@ -452,6 +454,7 @@ struct usb_gadget_ops { * only supports HNP on a different root port. * @b_hnp_enable: OTG device feature flag, indicating that the A-Host * enabled HNP support. + * @host_request: A Flag, indicating that user wishes to take the host role. * @name: Identifies the controller hardware type. Used in diagnostics * and sometimes configuration. * @dev: Driver model state for this abstract device. @@ -482,10 +485,14 @@ struct usb_gadget { enum usb_device_speed speed; unsigned is_dualspeed:1; unsigned is_otg:1; + u16 otg_version; +#define UDC_OTG1 0x0000 +#define UDC_OTG2 0x0001 unsigned is_a_peripheral:1; unsigned b_hnp_enable:1; unsigned a_hnp_support:1; unsigned a_alt_hnp_support:1; + unsigned host_request:1; const char *name; struct device dev; }; @@ -537,6 +544,20 @@ static inline int gadget_is_otg(struct usb_gadget *g) } /** + * gadget_is_otg2 - return true if UDC is compliant to OTG 2.0 + * @g: controller that might have a Mini-AB/Micro-AB connector + * + */ +static inline int gadget_is_otg2(struct usb_gadget *g) +{ +#ifdef CONFIG_USB_OTG + return g->otg_version && UDC_OTG2; +#else + return 0; +#endif +} + +/** * usb_gadget_frame_number - returns the current frame number * @gadget: controller that reports the frame number * |