usb: gadget: atmel_usba: use endian agnostic IO on ARM

Change from using the __raw IO accesors to the endian agnostic versions
of readl/writel_relaxed when not on AVR32. This fixes issues with running
big endian on ARMv7.

Signed-off-by: Ben Dooks <[email protected]>
--
CC: Nicolas Ferre <[email protected]>
CC: Felipe Balbi <[email protected]>
CC: Greg Kroah-Hartman <[email protected]>
CC: [email protected]
Signed-off-by: Felipe Balbi <[email protected]>

Author: bjdooks-ct

drivers/usb/gadget/udc/atmel_usba_udc.c

@@ -152,7 +152,7 @@ static int regs_dbg_open(struct inode *inode, struct file *file)
 
 	spin_lock_irq(&udc->lock);
 	for (i = 0; i < inode->i_size / 4; i++)
-		data[i] = __raw_readl(udc->regs + i * 4);
+		data[i] = usba_io_readl(udc->regs + i * 4);
 	spin_unlock_irq(&udc->lock);
 
 	file->private_data = data;
@@ -1249,7 +1249,7 @@ static int handle_ep0_setup(struct usba_udc *udc, struct usba_ep *ep,
 		if (crq->wLength != cpu_to_le16(sizeof(status)))
 			goto stall;
 		ep->state = DATA_STAGE_IN;
-		__raw_writew(status, ep->fifo);
+		usba_io_writew(status, ep->fifo);
 		usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
 		break;
 	}

drivers/usb/gadget/udc/atmel_usba_udc.h

@@ -191,18 +191,28 @@
 	 | USBA_BF(name, value))
 
 /* Register access macros */
+#ifdef CONFIG_AVR32
+#define usba_io_readl	__raw_readl
+#define usba_io_writel	__raw_writel
+#define usba_io_writew	__raw_writew
+#else
+#define usba_io_readl	readl_relaxed
+#define usba_io_writel	writel_relaxed
+#define usba_io_writew	writew_relaxed
+#endif
+
 #define usba_readl(udc, reg)					\
-	__raw_readl((udc)->regs + USBA_##reg)
+	usba_io_readl((udc)->regs + USBA_##reg)
 #define usba_writel(udc, reg, value)				\
-	__raw_writel((value), (udc)->regs + USBA_##reg)
+	usba_io_writel((value), (udc)->regs + USBA_##reg)
 #define usba_ep_readl(ep, reg)					\
-	__raw_readl((ep)->ep_regs + USBA_EPT_##reg)
+	usba_io_readl((ep)->ep_regs + USBA_EPT_##reg)
 #define usba_ep_writel(ep, reg, value)				\
-	__raw_writel((value), (ep)->ep_regs + USBA_EPT_##reg)
+	usba_io_writel((value), (ep)->ep_regs + USBA_EPT_##reg)
 #define usba_dma_readl(ep, reg)					\
-	__raw_readl((ep)->dma_regs + USBA_DMA_##reg)
+	usba_io_readl((ep)->dma_regs + USBA_DMA_##reg)
 #define usba_dma_writel(ep, reg, value)				\
-	__raw_writel((value), (ep)->dma_regs + USBA_DMA_##reg)
+	usba_io_writel((value), (ep)->dma_regs + USBA_DMA_##reg)
 
 /* Calculate base address for a given endpoint or DMA controller */
 #define USBA_EPT_BASE(x)	(0x100 + (x) * 0x20)