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authorsupriya karanth <supriya.karanth@stericsson.com>2011-12-09 16:32:37 +0530
committerPhilippe Langlais <philippe.langlais@stericsson.com>2012-01-10 09:50:25 +0100
commit330f78a83c1f47055427e10a68733af77b2cbac8 (patch)
treec491e0d0cd07f25a04c326ad6ef0ae6a476adaf3
parentd1c951bf6d73d7daaf74bb8e0f83e02531b0f7f6 (diff)
usb: musb: TXMAXP,TXCSR setting in Host modestable-linux-ux500-3.1
The TXMAXP and TXCSR registers were not set correctly for the BULK OUT endpoints causing issues in Full speed in Host mode. ST-Ericsson Linux next: NA ST-Ericsson ID: 367049 ST-Ericsson FOSS-OUT ID: Trivial Change-Id: If5f3552235d8909adef4777f08d612df432d8709 Signed-off-by: supriya karanth <supriya.karanth@stericsson.com>
-rw-r--r--drivers/usb/musb/musb_host.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index f12b046b0d6..241f6342dc2 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -640,7 +640,17 @@ 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;
@@ -787,6 +797,13 @@ static void musb_ep_program(struct musb *musb, u8 epnum,
/* protocol/endpoint/interval/NAKlimit */
if (epnum) {
musb_writeb(epio, MUSB_TXTYPE, qh->type_reg);
+ /*
+ * Set the TXMAXP register correctly for Bulk OUT
+ * endpoints in host mode
+ */
+ if (can_bulk_split(musb, qh->type))
+ qh->hb_mult = hw_ep->max_packet_sz_tx
+ / packet_sz;
if (musb->double_buffer_not_ok)
musb_writew(epio, MUSB_TXMAXP,
hw_ep->max_packet_sz_tx);