diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-03-08 20:21:04 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-03-08 20:21:04 +0000 |
| commit | 988addf82e4c03739375279de73929580a2d4a6a (patch) | |
| tree | 989ae1cd4e264bbad80c65f04480486246e7b9f3 /drivers/usb/musb/musb_gadget.c | |
| parent | 004c1c7096659d352b83047a7593e91d8a30e3c5 (diff) | |
| parent | 25cf84cf377c0aae5dbcf937ea89bc7893db5176 (diff) | |
Merge branch 'origin' into devel-stable
Conflicts:
arch/arm/mach-mx2/devices.c
arch/arm/mach-mx2/devices.h
sound/soc/pxa/pxa-ssp.c
Diffstat (limited to 'drivers/usb/musb/musb_gadget.c')
| -rw-r--r-- | drivers/usb/musb/musb_gadget.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index cbcf14a236e..a9f288cd70e 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -895,7 +895,14 @@ static int musb_gadget_enable(struct usb_ep *ep, /* REVISIT if can_bulk_split(), use by updating "tmp"; * likewise high bandwidth periodic tx */ - musb_writew(regs, MUSB_TXMAXP, tmp); + /* Set TXMAXP with the FIFO size of the endpoint + * to disable double buffering mode. Currently, It seems that double + * buffering has problem if musb RTL revision number < 2.0. + */ + if (musb->hwvers < MUSB_HWVERS_2000) + musb_writew(regs, MUSB_TXMAXP, hw_ep->max_packet_sz_tx); + else + musb_writew(regs, MUSB_TXMAXP, tmp); csr = MUSB_TXCSR_MODE | MUSB_TXCSR_CLRDATATOG; if (musb_readw(regs, MUSB_TXCSR) @@ -925,7 +932,13 @@ static int musb_gadget_enable(struct usb_ep *ep, /* REVISIT if can_bulk_combine() use by updating "tmp" * likewise high bandwidth periodic rx */ - musb_writew(regs, MUSB_RXMAXP, tmp); + /* Set RXMAXP with the FIFO size of the endpoint + * to disable double buffering mode. + */ + if (musb->hwvers < MUSB_HWVERS_2000) + musb_writew(regs, MUSB_RXMAXP, hw_ep->max_packet_sz_rx); + else + musb_writew(regs, MUSB_RXMAXP, tmp); /* force shared fifo to OUT-only mode */ if (hw_ep->is_shared_fifo) { @@ -1697,8 +1710,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver) return -EINVAL; /* driver must be initialized to support peripheral mode */ - if (!musb || !(musb->board_mode == MUSB_OTG - || musb->board_mode != MUSB_OTG)) { + if (!musb) { DBG(1, "%s, no dev??\n", __func__); return -ENODEV; } |