[PATCH 01/10] usb: musb: enable ux500 host side dma support

From: Fabio Baltieri
Date: Wed May 15 2013 - 08:04:05 EST


From: Mian Yousaf Kaukab <mian.yousaf.kaukab@xxxxxxxxxxxxxx>

Host side dma support for ux500 is enabled by piggybacking on Inventra
dma support.

Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@xxxxxxxxxxxxxx>
Signed-off-by: Fabio Baltieri <fabio.baltieri@xxxxxxxxxx>
---
drivers/usb/musb/musb_host.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 8914dec..1a6b5a9 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -625,7 +625,7 @@ static bool musb_tx_dma_program(struct dma_controller *dma,
u16 csr;
u8 mode;

-#ifdef CONFIG_USB_INVENTRA_DMA
+#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA)
if (length > channel->max_len)
length = channel->max_len;

@@ -1659,7 +1659,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)

/* FIXME this is _way_ too much in-line logic for Mentor DMA */

-#ifndef CONFIG_USB_INVENTRA_DMA
+#if !defined(CONFIG_USB_INVENTRA_DMA) && !defined(CONFIG_USB_UX500_DMA)
if (rx_csr & MUSB_RXCSR_H_REQPKT) {
/* REVISIT this happened for a while on some short reads...
* the cleanup still needs investigation... looks bad...
@@ -1691,7 +1691,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
| MUSB_RXCSR_RXPKTRDY);
musb_writew(hw_ep->regs, MUSB_RXCSR, val);

-#ifdef CONFIG_USB_INVENTRA_DMA
+#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA)
if (usb_pipeisoc(pipe)) {
struct usb_iso_packet_descriptor *d;

@@ -1747,7 +1747,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
}

/* we are expecting IN packets */
-#ifdef CONFIG_USB_INVENTRA_DMA
+#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA)
if (dma) {
struct dma_controller *c;
u16 rx_count;
--
1.8.2

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