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

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Message-Id: <1368619413-24647-2-git-send-email-fabio.baltieri@linaro.org>
Date:	Wed, 15 May 2013 14:03:24 +0200
From:	Fabio Baltieri <fabio.baltieri@...aro.org>
To:	Felipe Balbi <balbi@...com>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Lee Jones <lee.jones@...aro.org>,
	Praveena Nadahally <praveen.nadahally@...ricsson.com>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	Mian Yousaf Kaukab <mian.yousaf.kaukab@...ricsson.com>,
	Fabio Baltieri <fabio.baltieri@...aro.org>
Subject: [PATCH 01/10] usb: musb: enable ux500 host side dma support

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

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

Acked-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@...ricsson.com>
Signed-off-by: Fabio Baltieri <fabio.baltieri@...aro.org>
---
 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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