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| author | Pavankumar Kondeti <pkondeti@codeaurora.org> | 2011-02-18 15:13:16 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-25 22:33:56 +0300 |
| commit | 0e6ca1998e4c803b0be98f97a1d1e1ea562b8964 (patch) | |
| tree | bd54db0582948c78a8759f7713e6b7b97833e3a0 /drivers/usb/gadget/ci13xxx_udc.h | |
| parent | 91f58ae61913b40da35e119017e70b3420c6f3a0 (diff) | |
| download | linux-0e6ca1998e4c803b0be98f97a1d1e1ea562b8964.tar.xz | |
USB: gadget: Implement hardware queuing in ci13xxx_udc
Chipidea USB controller provides a means (Add dTD TripWire semaphore)
for safely adding a new dTD to an active endpoint's linked list. Make
use of this feature to improve performance. Dynamically allocate and
free dTD for supporting zero length packet termination. Honor
no_interrupt flag set by gadget drivers.
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/ci13xxx_udc.h')
| -rw-r--r-- | drivers/usb/gadget/ci13xxx_udc.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/gadget/ci13xxx_udc.h b/drivers/usb/gadget/ci13xxx_udc.h index a2492b65f98c..3fad3adeacc8 100644 --- a/drivers/usb/gadget/ci13xxx_udc.h +++ b/drivers/usb/gadget/ci13xxx_udc.h @@ -33,6 +33,7 @@ struct ci13xxx_td { /* 0 */ u32 next; #define TD_TERMINATE BIT(0) +#define TD_ADDR_MASK (0xFFFFFFEUL << 5) /* 1 */ u32 token; #define TD_STATUS (0x00FFUL << 0) @@ -74,6 +75,8 @@ struct ci13xxx_req { struct list_head queue; struct ci13xxx_td *ptr; dma_addr_t dma; + struct ci13xxx_td *zptr; + dma_addr_t zdma; }; /* Extension of usb_ep */ @@ -152,6 +155,7 @@ struct ci13xxx { #define USBCMD_RS BIT(0) #define USBCMD_RST BIT(1) #define USBCMD_SUTW BIT(13) +#define USBCMD_ATDTW BIT(14) /* USBSTS & USBINTR */ #define USBi_UI BIT(0) |