diff options
| author | supriya karanth <supriya.karanth@stericsson.com> | 2012-12-06 11:16:23 +0530 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-01-10 14:16:47 +0200 |
| commit | f27862819350d2c1a679b690b5b3559e632e81eb (patch) | |
| tree | ce6449f55b5238d486dc2b004df646cdfa13318e /drivers/usb/musb/musb_host.c | |
| parent | bb3a2ef2eb8cfaea335dcb3426350df7f3d48069 (diff) | |
usb: musb: set AUTOSET for full speed bulk DMA transfer in host mode
The "mult" factor is not updated properly for the can_bulk_split()
case.
The AUTOSET bit in the TXCSR is not being set if the "mult"
factor is greater than 1 for the High Bandwidth ISO case.
But the "mult" factor is also greater than 1 in case of Full speed
bulk transfers with the packet splitting in TXMAXP register
enabled with can_bulk_split().
Without the AUTOSET the DMA transfers will not progress in mode1
[ balbi@ti.com : fix braces placement ]
Signed-off-by: supriya karanth <supriya.karanth@stericsson.com>
Signed-off-by: Praveena NADAHALLY <praveen.nadahally@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/musb/musb_host.c')
| -rw-r--r-- | drivers/usb/musb/musb_host.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index e9f0fd9ddd2d..cf3705fd78c8 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -634,7 +634,17 @@ static bool musb_tx_dma_program(struct dma_controller *dma, mode = 1; csr |= MUSB_TXCSR_DMAMODE | MUSB_TXCSR_DMAENAB; /* autoset shouldn't be set in high bandwidth */ - if (qh->hb_mult == 1) + /* + * Enable Autoset according to table + * below + * bulk_split hb_mult Autoset_Enable + * 0 1 Yes(Normal) + * 0 >1 No(High BW ISO) + * 1 1 Yes(HS bulk) + * 1 >1 Yes(FS bulk) + */ + if (qh->hb_mult == 1 || (qh->hb_mult > 1 && + can_bulk_split(hw_ep->musb, qh->type))) csr |= MUSB_TXCSR_AUTOSET; } else { mode = 0; @@ -791,17 +801,19 @@ static void musb_ep_program(struct musb *musb, u8 epnum, /* protocol/endpoint/interval/NAKlimit */ if (epnum) { musb_writeb(epio, MUSB_TXTYPE, qh->type_reg); - if (musb->double_buffer_not_ok) + if (musb->double_buffer_not_ok) { musb_writew(epio, MUSB_TXMAXP, hw_ep->max_packet_sz_tx); - else if (can_bulk_split(musb, qh->type)) + } else if (can_bulk_split(musb, qh->type)) { + qh->hb_mult = hw_ep->max_packet_sz_tx + / packet_sz; musb_writew(epio, MUSB_TXMAXP, packet_sz - | ((hw_ep->max_packet_sz_tx / - packet_sz) - 1) << 11); - else + | ((qh->hb_mult) - 1) << 11); + } else { musb_writew(epio, MUSB_TXMAXP, qh->maxpacket | ((qh->hb_mult - 1) << 11)); + } musb_writeb(epio, MUSB_TXINTERVAL, qh->intv_reg); } else { musb_writeb(epio, MUSB_NAKLIMIT0, qh->intv_reg); |