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| author | Robert Baldyga <r.baldyga@samsung.com> | 2015-07-28 07:19:58 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-07-30 11:43:35 -0500 |
| commit | ffd9a0fcbbed300b55f84e8397e96c2edd06cbdf (patch) | |
| tree | f8e8623702da78572be2302366ebd1c1bb09b73c /include/linux/usb | |
| parent | c0bd5456a470223e331a9e9e93b4a7425ecfaabb (diff) | |
| download | linux-ffd9a0fcbbed300b55f84e8397e96c2edd06cbdf.tar.gz linux-ffd9a0fcbbed300b55f84e8397e96c2edd06cbdf.tar.bz2 linux-ffd9a0fcbbed300b55f84e8397e96c2edd06cbdf.zip | |
usb: gadget: add 'quirk_altset_not_supp' to usb_gadget
Due to some UDC controllers may not support altsettings, usb gadget layer
needs to provide a generic way to inform gadget functions about non-standard
hardware limitations.
This patch adds 'quirk_altset_not_supp' field to struct usb_gadget and helper
function gadget_is_altset_supported(). It also sets 'quirk_altset_not_supp'
to 1 in pxa25x_udc and pxa27x_udc drivers, which have such limitation.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/gadget.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index cea0511a1bc9..31be84b7e645 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -572,6 +572,7 @@ struct usb_gadget { unsigned a_hnp_support:1; unsigned a_alt_hnp_support:1; unsigned quirk_ep_out_aligned_size:1; + unsigned quirk_altset_not_supp:1; unsigned is_selfpowered:1; unsigned deactivated:1; unsigned connected:1; @@ -610,6 +611,16 @@ usb_ep_align_maybe(struct usb_gadget *g, struct usb_ep *ep, size_t len) } /** + * gadget_is_altset_supported - return true iff the hardware supports + * altsettings + * @g: controller to check for quirk + */ +static inline int gadget_is_altset_supported(struct usb_gadget *g) +{ + return !g->quirk_altset_not_supp; +} + +/** * gadget_is_dualspeed - return true iff the hardware handles high speed * @g: controller that might support both high and full speeds */ |