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| author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2019-02-19 23:29:21 -0800 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-02-22 08:11:18 +0100 |
| commit | 3c5317e9046c86aa0bbba402b2b1fd173fd4774e (patch) | |
| tree | 728d445cb1fa39eaf5a765d2c6c0c328da50e95f /drivers/usb | |
| parent | 956fc9cc056abc878256298e05745fc76732c82c (diff) | |
| download | barebox-3c5317e9046c86aa0bbba402b2b1fd173fd4774e.tar.gz barebox-3c5317e9046c86aa0bbba402b2b1fd173fd4774e.tar.xz | |
usb: xhci-hcd: Make use of lo_hi_readq/writeq()
Make use of lo_hi_readq/writeq() to implement xhci_read/write_64()
helpers, same as it is done in the Linux kernel.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/xhci.h | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index dfbfe579be..84a14dd1fc 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -24,6 +24,8 @@ #ifndef __XHCI_H #define __XHCI_H +#include <io-64-nonatomic-lo-hi.h> + #define NUM_COMMAND_TRBS 8 #define NUM_TRANSFER_TRBS 8 #define NUM_EVENT_SEGM 1 /* only one supported */ @@ -1165,19 +1167,11 @@ struct xhci_erst_entry { */ static inline u64 xhci_read_64(__le64 __iomem *regs) { - __u32 __iomem *ptr = (__u32 __iomem *)regs; - u64 val_lo = readl(ptr); - u64 val_hi = readl(ptr + 1); - return val_lo + (val_hi << 32); + return lo_hi_readq(regs); } static inline void xhci_write_64(const u64 val, __le64 __iomem *regs) { - __u32 __iomem *ptr = (__u32 __iomem *)regs; - u32 val_lo = lower_32_bits(val); - u32 val_hi = upper_32_bits(val); - - writel(val_lo, ptr); - writel(val_hi, ptr + 1); + lo_hi_writeq(val, regs); } /* |