diff options
| author | Lukasz Majewski <l.majewski@samsung.com> | 2012-05-02 17:47:02 +0200 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2012-05-20 08:32:33 +0200 |
| commit | 7010f5b94fa3c8e5daf95d4fab002eddbfa4e9b2 (patch) | |
| tree | 1cbd81400486cd032a225a6471b5c3035d54e339 /include/usb | |
| parent | f3b05ca5335cf37658d28fa1f9c76758482aa6f6 (diff) | |
usb:gadget:composite USB composite gadget support
USB Composite gadget implementation for u-boot. It builds on top
of USB UDC drivers.
This commit is based on following files from Linux Kernel v2.6.36:
./include/linux/usb/composite.h
./drivers/usb/gadget/composite.c
SHA1: d187abb9a83e6c6b6e9f2ca17962bdeafb4bc903
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Vasut <marex@denx.de>
Diffstat (limited to 'include/usb')
| -rw-r--r-- | include/usb/lin_gadget_compat.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/usb/lin_gadget_compat.h b/include/usb/lin_gadget_compat.h index 8287b9de9f..5bdcb8d797 100644 --- a/include/usb/lin_gadget_compat.h +++ b/include/usb/lin_gadget_compat.h @@ -44,6 +44,25 @@ #define ENOTSUPP 524 /* Operation is not supported */ +#define BITS_PER_BYTE 8 +#define BITS_TO_LONGS(nr) \ + DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) +#define DECLARE_BITMAP(name, bits) \ + unsigned long name[BITS_TO_LONGS(bits)] + +#define small_const_nbits(nbits) \ + (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) + +static inline void bitmap_zero(unsigned long *dst, int nbits) +{ + if (small_const_nbits(nbits)) + *dst = 0UL; + else { + int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); + memset(dst, 0, len); + } +} + #define dma_cache_maint(addr, size, mode) cache_flush() void cache_flush(void); |