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usb: musb: support ISO high bandwidth for gadget mode 

This patch has been tested OK on beagle B5 board and
use usbtest #15 and #16 as testcase.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Anand Gadiyar <gadiyar@ti.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Ming Lei 2010-09-24 13:44:04 +03:00 committed by Greg Kroah-Hartman
parent 3ee076dea6
commit f11d893de4
2 changed files with 39 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/usb/musb/musb_gadget.c
View File

@ -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);
}
}
@ -643,7 +645,8 @@ static void rxstate(struct musb *musb, struct musb_request *req)
*/
csr |= MUSB_RXCSR_DMAENAB;
csr |= MUSB_RXCSR_AUTOCLEAR;
if (!musb_ep->hb_mult)
csr |= MUSB_RXCSR_AUTOCLEAR;
#ifdef USE_MODE1
/* csr |= MUSB_RXCSR_DMAMODE; */
@ -875,9 +878,25 @@ 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
@ -890,8 +909,11 @@ 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);
@ -906,7 +928,7 @@ 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)
@ -927,8 +949,11 @@ 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);
@ -942,7 +967,7 @@ 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) {

2
drivers/usb/musb/musb_gadget.h
View File

@ -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)