diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-20 14:40:51 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-20 14:40:51 (GMT) |
commit | bc71c2df45e5a861818b5ee173702883df07471a (patch) | |
tree | cd008493efad9dc936d0d2574f26dc6c9c7cb785 /drivers/usb/dwc2/core.h | |
parent | 76d15c8fba655c9b2d60cf01834858f2c44483dc (diff) | |
parent | 33688abb2802ff3a230bd2441f765477b94cc89e (diff) | |
download | linux-bc71c2df45e5a861818b5ee173702883df07471a.tar.xz |
Merge 4.7-rc4 into usb-next
We need the 4.7-rc4 fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc2/core.h')
-rw-r--r-- | drivers/usb/dwc2/core.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 3c58d63..dec0b21 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -64,6 +64,17 @@ DWC2_TRACE_SCHEDULER_VB(pr_fmt("%s: SCH: " fmt), \ dev_name(hsotg->dev), ##__VA_ARGS__) +#ifdef CONFIG_MIPS +/* + * There are some MIPS machines that can run in either big-endian + * or little-endian mode and that use the dwc2 register without + * a byteswap in both ways. + * Unlike other architectures, MIPS apparently does not require a + * barrier before the __raw_writel() to synchronize with DMA but does + * require the barrier after the __raw_writel() to serialize a set of + * writes. This set of operations was added specifically for MIPS and + * should only be used there. + */ static inline u32 dwc2_readl(const void __iomem *addr) { u32 value = __raw_readl(addr); @@ -90,6 +101,22 @@ static inline void dwc2_writel(u32 value, void __iomem *addr) pr_info("INFO:: wrote %08x to %p\n", value, addr); #endif } +#else +/* Normal architectures just use readl/write */ +static inline u32 dwc2_readl(const void __iomem *addr) +{ + return readl(addr); +} + +static inline void dwc2_writel(u32 value, void __iomem *addr) +{ + writel(value, addr); + +#ifdef DWC2_LOG_WRITES + pr_info("info:: wrote %08x to %p\n", value, addr); +#endif +} +#endif /* Maximum number of Endpoints/HostChannels */ #define MAX_EPS_CHANNELS 16 |