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authorArnd Bergmann <arnd@arndb.de>2016-01-28 17:17:04 +0100
committerFelipe Balbi <balbi@kernel.org>2016-03-04 15:14:29 +0200
commit65bc0fba4ed6e2ea7d89539985feb576ae2f84b9 (patch)
treef4caaf1f5f2db5b99a1d085ce70d31e4e9eeeac9 /include
parenta77af20e9e67caf79bd961c3d12938051b2c560e (diff)
usb: gadget: pxa25x_udc: use readl/writel for mmio
This converts the pxa25x udc driver to use readl/writel as normal driver should do, rather than dereferencing __iomem pointers themselves. Based on the earlier preparation work, we can now also pass the register start in the device pointer so we no longer need the global variable. The unclear part here is for IXP4xx, which supports both big-endian and little-endian configurations. So far, the driver has done no byteswap in either case. I suspect that is wrong and it would actually need to swap in one or the other case, but I don't know which. It's also possible that there is some magic setting in the chip that makes the endianess of the MMIO register match the CPU, and in that case, the code actually does the right thing for all configurations, both before and after this patch. Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Felipe Balbi <balbi@kernel.org>
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