From: Ming Lei <tom.leiming@xxxxxxxxx>
This has been tested OK on beagle B5 board.
Signed-off-by: Ming Lei <tom.leiming@xxxxxxxxx>
---
V1: This version fixes some csr configuration errors, which is pointed by
Sergei.
---
drivers/usb/musb/musb_gadget.c | 49 ++++++++++++++++++++++++++++++---------
drivers/usb/musb/musb_gadget.h | 2 +
2 files changed, 39 insertions(+), 12 deletions(-)
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index de0ca90..550b397 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -337,13 +337,15 @@ static void txstate(struct musb *musb, struct musb_request *req)
csr |= (MUSB_TXCSR_DMAENAB |
MUSB_TXCSR_MODE);
/* against programming guide */
- } else
- csr |= (MUSB_TXCSR_AUTOSET
- | MUSB_TXCSR_DMAENAB
+ } else {
+ csr |= (MUSB_TXCSR_DMAENAB
| MUSB_TXCSR_DMAMODE
| MUSB_TXCSR_MODE);
-
+ if (!musb_ep->hb_mult)
+ csr |= MUSB_TXCSR_AUTOSET;
+ }
csr &= ~MUSB_TXCSR_P_UNDERRUN;
+
musb_writew(epio, MUSB_TXCSR, csr);
}
}
@@ -656,7 +658,8 @@ static void rxstate(struct musb *musb, struct musb_request *req)
csr |= MUSB_RXCSR_DMAENAB;
#ifdef USE_MODE1
- csr |= MUSB_RXCSR_AUTOCLEAR;
+ if (!musb_ep->hb_mult)
+ csr |= MUSB_RXCSR_AUTOCLEAR;
/* csr |= MUSB_RXCSR_DMAMODE; */
/* this special sequence (enabling and then
@@ -886,9 +889,25 @@ static int musb_gadget_enable(struct usb_ep *ep,
/* REVISIT this rules out high bandwidth periodic transfers */
tmp = le16_to_cpu(desc->wMaxPacketSize);
- if (tmp & ~0x07ff)
- goto fail;
- musb_ep->packet_sz = tmp;
+ if (tmp & ~0x07ff) {
+ int ok;
+
+ if (usb_endpoint_dir_in(desc))
+ ok = musb->hb_iso_tx;
+ else
+ ok = musb->hb_iso_rx;
+
+ if (!ok) {
+ DBG(4, "%s: not support ISO high bandwidth\n", __func__);
+ goto fail;
+ }
+ musb_ep->hb_mult = (tmp >> 11) & 3;
+ } else {
+ musb_ep->hb_mult = 0;
+ }
+
+ musb_ep->packet_sz = tmp & 0x7ff;
+ tmp = musb_ep->packet_sz * (musb_ep->hb_mult + 1);
/* enable the interrupts for the endpoint, set the endpoint
* packet size (or fail), set the mode, clear the fifo
@@ -901,8 +920,11 @@ static int musb_gadget_enable(struct usb_ep *ep,
musb_ep->is_in = 1;
if (!musb_ep->is_in)
goto fail;
- if (tmp > hw_ep->max_packet_sz_tx)
+
+ if (tmp > hw_ep->max_packet_sz_tx) {
+ DBG(4, "%s: packet size beyond hw fifo size\n", __func__);
goto fail;
+ }
int_txe |= (1 << epnum);
musb_writew(mbase, MUSB_INTRTXE, int_txe);
@@ -917,7 +939,7 @@ static int musb_gadget_enable(struct usb_ep *ep,
if (musb->hwvers < MUSB_HWVERS_2000)
musb_writew(regs, MUSB_TXMAXP, hw_ep->max_packet_sz_tx);
else
- musb_writew(regs, MUSB_TXMAXP, tmp);
+ musb_writew(regs, MUSB_TXMAXP, musb_ep->packet_sz | (musb_ep->hb_mult << 11));
csr = MUSB_TXCSR_MODE | MUSB_TXCSR_CLRDATATOG;
if (musb_readw(regs, MUSB_TXCSR)
@@ -938,8 +960,11 @@ static int musb_gadget_enable(struct usb_ep *ep,
musb_ep->is_in = 0;
if (musb_ep->is_in)
goto fail;
- if (tmp > hw_ep->max_packet_sz_rx)
+
+ if (tmp > hw_ep->max_packet_sz_rx) {
+ DBG(4, "%s: packet size beyond hw fifo size\n", __func__);
goto fail;
+ }
int_rxe |= (1 << epnum);
musb_writew(mbase, MUSB_INTRRXE, int_rxe);
@@ -953,7 +978,7 @@ static int musb_gadget_enable(struct usb_ep *ep,
if (musb->hwvers < MUSB_HWVERS_2000)
musb_writew(regs, MUSB_RXMAXP, hw_ep->max_packet_sz_rx);
else
- musb_writew(regs, MUSB_RXMAXP, tmp);
+ musb_writew(regs, MUSB_RXMAXP, musb_ep->packet_sz | (musb_ep->hb_mult << 11));
/* force shared fifo to OUT-only mode */
if (hw_ep->is_shared_fifo) {
diff --git a/drivers/usb/musb/musb_gadget.h b/drivers/usb/musb/musb_gadget.h
index c8b1403..23a2bd5 100644
--- a/drivers/usb/musb/musb_gadget.h
+++ b/drivers/usb/musb/musb_gadget.h
@@ -79,6 +79,8 @@ struct musb_ep {
/* true if lock must be dropped but req_list may not be advanced */
u8 busy;
+
+ u8 hb_mult;
};
static inline struct musb_ep *to_musb_ep(struct usb_ep *ep)
--
1.6.2.5
--
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