redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

MLK-23595-1 usb: cdns3: gadget: calculate TDL per TD

Browse source 
TDL is for TD length, so we need to calculate this value per
TD, but not for TRB, and the TDL is only needed for the first
TRB in TD.

Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
This commit is contained in:
Peter Chen 2020-03-16 17:20:11 +08:00
parent a9972cff81
commit d2e892c29d
No known key found for this signature in database
GPG key ID: 4859298150D671BB
1 changed files with 13 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
drivers/usb/cdns3/gadget.c
View file

@ -613,6 +613,7 @@ int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
u32 control;
int pcs;
struct scatterlist *s = NULL;
u8 td_size;
if (priv_ep->type == USB_ENDPOINT_XFER_ISOC)
num_trb = priv_ep->interval;
@ -671,9 +672,18 @@ int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
if (request->num_mapped_sgs)
s = request->sg;
if (priv_dev->dev_ver == DEV_VER_V2) {
td_size = DIV_ROUND_UP(request->length,
priv_ep->endpoint.maxpacket);
if (priv_dev->gadget.speed == USB_SPEED_SUPER)
trb->length = TRB_TDL_SS_SIZE(td_size);
else
control |= TRB_TDL_HS_SIZE(td_size);
}
do {
u32 length;
u8 td_size = 0;
/* fill TRB */
control |= TRB_TYPE(TRB_NORMAL);
@ -684,16 +694,7 @@ int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
else
length = sg_dma_len(s);
if (priv_dev->dev_ver == DEV_VER_V2)
td_size = DIV_ROUND_UP(length,
priv_ep->endpoint.maxpacket);
trb->length = TRB_BURST_LEN(16) | TRB_LEN(length);
if (priv_dev->gadget.speed == USB_SPEED_SUPER)
trb->length |= TRB_TDL_SS_SIZE(td_size);
else
control |= TRB_TDL_HS_SIZE(td_size);
trb->length |= TRB_BURST_LEN(16) | TRB_LEN(length);
pcs = priv_ep->pcs ? TRB_CYCLE : 0;
/*
@ -720,6 +721,7 @@ int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
priv_req->end_trb = priv_ep->enqueue;
cdns3_ep_inc_enq(priv_ep);
trb = priv_ep->trb_pool + priv_ep->enqueue;
trb->length = 0;
} while (sg_iter < num_trb);
trb = priv_req->trb;