diff options
| author | Amit Virdi <amit.virdi@st.com> | 2014-08-22 14:36:36 +0530 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-08-27 14:13:18 -0500 |
| commit | ef11982dd7a657512c362242508bb4021e0d67b6 (patch) | |
| tree | c8f164cdbca20bb1543c381793a058d77a4e64d2 /drivers/usb/gadget/function/g_zero.h | |
| parent | c572a217d1b81209ae5a4fe09a96db758f86f10b (diff) | |
usb: gadget: zero: Add support for interrupt EP
Interrupt endpoints behave quite similar to the bulk endpoints with the
difference that the endpoints expect data sending/reception request at
particular intervals till the whole data has not been transmitted.
The interrupt EP support is added to gadget zero. A new alternate setting (=2)
has been added. It has 2 interrupt endpoints. The default parameters are set as:
bInterval: 1 ms for FS and 8 uFrames (implying 1 ms) for HS/SS
wMaxPacketSize: 64 bytes for FS and 1024 bytes for HS/SS
However, the same can be overridden through the module parameter interface.
The code is tested for HS and SS on a platform having DWC3 controller.
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/function/g_zero.h')
| -rw-r--r-- | drivers/usb/gadget/function/g_zero.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/usb/gadget/function/g_zero.h b/drivers/usb/gadget/function/g_zero.h index 15f180904f8a..2ce28b9d97cc 100644 --- a/drivers/usb/gadget/function/g_zero.h +++ b/drivers/usb/gadget/function/g_zero.h @@ -10,6 +10,8 @@ #define GZERO_QLEN 32 #define GZERO_ISOC_INTERVAL 4 #define GZERO_ISOC_MAXPACKET 1024 +#define GZERO_INT_INTERVAL 1 /* Default interrupt interval = 1 ms */ +#define GZERO_INT_MAXPACKET 1024 struct usb_zero_options { unsigned pattern; @@ -17,6 +19,10 @@ struct usb_zero_options { unsigned isoc_maxpacket; unsigned isoc_mult; unsigned isoc_maxburst; + unsigned int_interval; /* In ms */ + unsigned int_maxpacket; + unsigned int_mult; + unsigned int_maxburst; unsigned bulk_buflen; unsigned qlen; }; @@ -28,6 +34,10 @@ struct f_ss_opts { unsigned isoc_maxpacket; unsigned isoc_mult; unsigned isoc_maxburst; + unsigned int_interval; /* In ms */ + unsigned int_maxpacket; + unsigned int_mult; + unsigned int_maxburst; unsigned bulk_buflen; /* @@ -62,6 +72,7 @@ int lb_modinit(void); void free_ep_req(struct usb_ep *ep, struct usb_request *req); void disable_endpoints(struct usb_composite_dev *cdev, struct usb_ep *in, struct usb_ep *out, - struct usb_ep *iso_in, struct usb_ep *iso_out); + struct usb_ep *iso_in, struct usb_ep *iso_out, + struct usb_ep *int_in, struct usb_ep *int_out); #endif /* __G_ZERO_H */ |