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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 <ben.dooks@codethink.co.uk>
--
CC: Nicolas Ferre <nicolas.ferre@atmel.com>
CC: Felipe Balbi <balbi@ti.com>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: linux-usb@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Ben Dooks 2015-03-18 15:53:09 +00:00 committed by Felipe Balbi
parent b48cb02de3
commit a3dd3befd7
2 changed files with 18 additions and 8 deletions
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4
drivers/usb/gadget/udc/atmel_usba_udc.c
View File

@ -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;
}

22
drivers/usb/gadget/udc/atmel_usba_udc.h
View File

@ -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)