[RFC 7/9] usb: ehci: add big-endian registers support

[Sascha Hauer]

On Fri, Aug 28, 2015 at 01:24:08AM +0300, Antony Pavlov wrote:
> +
> +#ifdef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
> +#define ehci_big_endian_mmio(e)		((e)->big_endian_mmio)
> +#else
> +#define ehci_big_endian_mmio(e)		0
> +#endif
> +
> +static inline void ehci_writel(const struct ehci_priv *ehci,
> +				__u32 __iomem *regs, const unsigned int val)
>  {
> -	writel(val, regs);
> +	if (IS_ENABLED(CONFIG_USB_EHCI_BIG_ENDIAN_MMIO)) {
> +		ehci_big_endian_mmio(ehci) ?
> +			iowrite32be(val, regs) :
> +			writel(val, regs);
> +	} else
> +		writel(val, regs);
>  }

	if (ehci_big_endian_mmio(ehci))
		iowrite32be(val, regs);
	else
		writel(val, regs);

is enough.

Sascha

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