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path: root/drivers/usb/chipidea/udc.c
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Diffstat (limited to 'drivers/usb/chipidea/udc.c')
-rw-r--r--drivers/usb/chipidea/udc.c23
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 69d20fbb38a2..80de2f88ed2c 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -393,6 +393,14 @@ static int add_td_to_list(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq,
node->ptr->token = cpu_to_le32(length << __ffs(TD_TOTAL_BYTES));
node->ptr->token &= cpu_to_le32(TD_TOTAL_BYTES);
node->ptr->token |= cpu_to_le32(TD_STATUS_ACTIVE);
+ if (hwep->type == USB_ENDPOINT_XFER_ISOC && hwep->dir == TX) {
+ u32 mul = hwreq->req.length / hwep->ep.maxpacket;
+
+ if (hwreq->req.length == 0
+ || hwreq->req.length % hwep->ep.maxpacket)
+ mul++;
+ node->ptr->token |= mul << __ffs(TD_MULTO);
+ }
temp = (u32) (hwreq->req.dma + hwreq->req.actual);
if (length) {
@@ -515,10 +523,11 @@ static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
hwep->qh.ptr->td.token &=
cpu_to_le32(~(TD_STATUS_HALTED|TD_STATUS_ACTIVE));
- if (hwep->type == USB_ENDPOINT_XFER_ISOC) {
+ if (hwep->type == USB_ENDPOINT_XFER_ISOC && hwep->dir == RX) {
u32 mul = hwreq->req.length / hwep->ep.maxpacket;
- if (hwreq->req.length % hwep->ep.maxpacket)
+ if (hwreq->req.length == 0
+ || hwreq->req.length % hwep->ep.maxpacket)
mul++;
hwep->qh.ptr->cap |= mul << __ffs(QH_MULT);
}
@@ -1173,6 +1182,12 @@ static int ep_enable(struct usb_ep *ep,
if (hwep->num)
cap |= QH_ZLT;
cap |= (hwep->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT;
+ /*
+ * For ISO-TX, we set mult at QH as the largest value, and use
+ * MultO at TD as real mult value.
+ */
+ if (hwep->type == USB_ENDPOINT_XFER_ISOC && hwep->dir == TX)
+ cap |= 3 << __ffs(QH_MULT);
hwep->qh.ptr->cap = cpu_to_le32(cap);
@@ -1566,7 +1581,7 @@ static int init_eps(struct ci_hdrc *ci)
* eps, maxP is set by epautoconfig() called
* by gadget layer
*/
- hwep->ep.maxpacket = (unsigned short)~0;
+ usb_ep_set_maxpacket_limit(&hwep->ep, (unsigned short)~0);
INIT_LIST_HEAD(&hwep->qh.queue);
hwep->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL,
@@ -1586,7 +1601,7 @@ static int init_eps(struct ci_hdrc *ci)
else
ci->ep0in = hwep;
- hwep->ep.maxpacket = CTRL_PAYLOAD_MAX;
+ usb_ep_set_maxpacket_limit(&hwep->ep, CTRL_PAYLOAD_MAX);
continue;
}
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